JP5548255B2 - Cart carrier - Google Patents

Description

  The present invention relates to a carriage conveying device for placing and conveying a mold or a casting frame in a casting line.

  Conventionally, in a casting line, in order to continuously convey a plurality of casting frames and molds, a plurality of carriages on which the casting frames and molds are placed are arranged in series. However, if the arranged carts collide with each other when carrying the casting frame (mold) and cause an impact, or if a strong inertia force is produced by sudden acceleration at the start of conveyance or sudden deceleration at the conveyance stop, The mold placed on the mold causes problems such as mold drop and core collapse. Therefore, it is necessary to transport the carriage without giving the mold as much impact or strong inertia as possible.

  According to Patent Document 1, which is considered as an apparatus for transporting a group of carts arranged without giving such an impact or strong penetrating force, a plurality of carts each having a cast frame mounted thereon can be moved to a cart transport rail. The traverser is placed at the loading position adjacent to the upstream end position of the carriage transport rail and the unloading position adjacent to the downstream end position, and the carriage positioned at the loading position is pushed from the loading position to the upstream end position. Electric servo-type cushion that abuts the electric servo-type extrusion cylinder and the carriage located at the downstream end position and reduces the speed at which the carriage moves from the downstream end position to the carry-out position (at the same time, the speeds of a plurality of carriages on the transport rail). And providing a cylinder.

  According to Patent Document 2, the carrying-in side engaging body and the carrying-out side engaging body are mounted on a movable body that is reciprocated by a predetermined amount, and the carrying-in side engaging body pushes the casting frame positioned at the carrying-in position in the downstream direction. For this purpose, the movable body is moved forward by a certain amount in a state in which it engages with the casting frame and the carry-out side engaging body engages with the casting frame in order to restrict the downstream movement of the casting frame located at the downstream end. In addition, it is described that a certain amount of the plurality of casting frames positioned between the loading position, the downstream end position, and the both positions is conveyed.

Utility Model Registration No. 2559334 Japanese Patent Publication No. 2004-82146

  However, in Patent Document 1, an expensive electric servo cushion cylinder must be provided in order to reduce the moving speed of a plurality of carts pushed by the electric servo extrusion cylinder during conveyance of the casting frame, and the equipment cost Will increase. Moreover, since a long and slender electric servo type extrusion cylinder and cushion cylinder are installed in series outside the loading position and the unloading position, a large space is required, which may hinder the work path. Also, in the control of the electric servo-type extrusion cylinder and the electric servo-type cushion cylinder, an encoder for detecting the moving distance of the rod moved forward and backward by the inverter motor via the feed screw mechanism, and the excitation voltage applied to the inverter motor Each cylinder requires an inverter that converts the frequency and a control device that associates and controls the encoder and the inverter. It takes time and labor to control and adjust these facilities, and the equipment costs also increase. there were.

  Patent Document 2 is an excellent technique that solves the problems in the case of using an electric servo-type extrusion cylinder and an electric servo-type cushion cylinder, and has a simple and inexpensive configuration. However, in the casting line, it is necessary to ensure a long cooling time after the molten metal is poured into the mold, and there are cases where a large number of conveying rail rows are arranged for that purpose. In this case, there is a problem that it is necessary to provide the same drive device for each of the transport rails arranged in a large number of rows, resulting in an increase in equipment costs.

  The present invention has been made in view of such conventional problems, and the object thereof is to smoothly and quickly convey a cast frame and a mold by a plurality of carts arranged in a conveyance path, and to constitute a simple and inexpensive mechanism. An object of the present invention is to provide a cart transport device that can reduce equipment costs by transporting a cart on a plurality of transport paths with a single drive device.

In order to solve the above-described problem, the structural feature of the invention according to claim 1 is that a plurality of carriages on which a cast frame or a mold is placed are continuously arranged between an upstream end position and a downstream end position. A first transport path that is transported in the direction and a plurality of carriages that are provided in parallel with the first transport path and on which a casting frame or a mold is placed are continuously disposed between the upstream end position and the downstream end position. A second transport path transported in a direction opposite to the predetermined direction; a first unloading position aligned with a downstream end position of the first transport path; and the second transport path in parallel with the first unloading position. Between the second carry-in position aligned with the upstream end position, the second carry-out position aligned with the downstream end position of the second transport path, and the upstream end position of the first transport path in parallel with the second carry-out position To the first carry-in position aligned with each other, the carry-out position from the carry-out position in which the carts are arranged in parallel by reciprocating In carriage conveying apparatus having a traverser for each transport, into position, the first moving member to a predetermined amount reciprocates along the first conveying path provided corresponding to the first transport path, and the second conveyor A second moving body provided corresponding to the path and reciprocating a predetermined amount along the second conveying path, and provided to correspond to the first conveying path and the second conveying path, respectively, and the rotational motion is changed to a linear motion. The motion conversion device for conversion and the motor are rotationally driven by one motor, and the rotation axis is arranged orthogonal to the first transport path and the second transport path, respectively, and a driving force is applied to each motion conversion device. The first and second moving bodies are converted by converting the rotational movement of the driving shaft into a linear movement in the transport direction of the moving body by the movement converting device. , From the upstream side to the downstream side of the first conveying path Is moved in synchronization, the first and second moving body, one driving device for moving in synchronization to the downstream side from the upstream side of the second conveyance path, the first conveyor of the first mobile body eclipse set to the upstream end position side of the road engage the carriage in which the first moving member is positioned at the loading position of the first conveying path when advancing to the downstream side from the upstream side of the first conveying path, First carry-in side engagement means for releasing engagement with the carriage when the first movable body moves backward from the downstream side of the first conveyance path; and the first conveyance of the first movable body. eclipse set at a downstream end position side of the road engaging carriage and downstream end position of the first conveying path when said first moving member is advanced from the upstream side to the downstream side of the first conveyance path, wherein a first carry-out side engagement means for restricting the free movement of the downstream direction of the plurality of carriages, of the second transport path of the second moving body Each of the second moving bodies provided on the flow end position side engages with a carriage positioned at the carry-in position of the second transport path when the second moving body advances from the upstream side to the downstream side of the second transport path, and A second carrying-in engagement means for releasing engagement with the carriage when the two moving bodies retreat from the downstream side to the upstream side of the second conveying path; and the second conveying path of the second moving body. The plurality of carriages that are provided on the downstream end position and engage with a carriage at a downstream end position of the second conveyance path when the second moving body advances from the upstream side to the downstream side of the second conveyance path. Second unloading side engaging means for restricting free movement in the downstream direction .

  The structural feature of the invention according to claim 2 is that, in claim 1, the carriage includes a carriage-side front engaging projection provided at a front part in the carriage transport direction and a rear part in the carriage carriage direction. And a carriage-side rear engagement protrusion provided at a position shifted to one of the directions orthogonal to the conveyance direction with respect to the carriage-side front engagement protrusion, and the movable body includes A carry-in position side moving unit that moves oppositely between the carry-in position and the upstream end position, and a carry-out position side mover that moves oppositely between the carry-out position and the downstream end position of each conveyance path, respectively. And the carry-in side engaging means is engaged with the carriage-side front engagement protrusion of the carriage, which is provided in the carry-in position-side moving portion of the movable body and is positioned at the carry-in position, from the upstream side. A carry-in side engaging projection, and the carry-out side engaging means A downstream side of the carriage-side rear engagement protrusion of the carriage provided at a position shifted to one of the directions orthogonal to the transport direction with respect to the carry-in side engagement protrusion in the installation-side moving portion. It has a carrying-out side engaging projection that engages by further abutting.

According to a third aspect of the present invention, in the first or second aspect of the invention, the motor is an inverter control motor that rotationally drives the drive shaft , and the motion conversion device has a base end portion on the drive shaft. A crank arm that is provided in a relatively non-rotatable manner and rotates around the drive shaft, and is connected to the tip end portion of the crank arm so as to be relatively rotatable at the other end portion, and has one end portion on the moving body that reciprocates in the transport direction. And a link member connected to be relatively rotatable .

  The structural feature of the invention according to claim 4 is that in any one of claims 1 to 3, the distance between the carry-in side engagement means and the carry-out side engagement means is the carry-in side. A predetermined length longer than the distance from the engaged position of the carriage located at the carry-in position where the engaging means engages to the engaged position of the carriage located at the downstream end position where the carry-out side engaging means engages. The drive device is set to be longer by a gap, and the drive unit moves the moving body forward from the upstream side to the downstream side of the corresponding conveyance path together with the carriage located at the downstream end position and the carriage following the carriage. , By stopping the moving body at a temporary stop position before the stop position on the unloading position side of the moving body corresponding to the unloading position of the transport path, the subsequent carriage is stopped at the downstream end position, and then moved. A drive that moves the body to the unloading position side stop position Control means, and at the unloading position, when the movable body moves to the temporary stop position, the carriage unloaded from the downstream end position by the movable body is separated from the subsequent carriage located at the downstream end position. The urging means to be provided is provided.

  According to the first aspect of the present invention, when the movable body corresponding to one of the first conveyance path and the second conveyance path is advanced from the upstream side to the downstream side by the driving device, the upstream side of the movable body is detected. The carry-in side engagement means provided on the end position side engages with the carriage at the carry-in position of the one conveyance path, and the carry-out side engagement means provided on the downstream end position side of the movable body Engage with the carriage at the downstream end position of one of the transport paths so as to restrict free movement in the downstream direction. Therefore, the plurality of carriages arranged in the one conveyance path includes a carriage positioned at the carry-in position of the one conveyance path engaged with the carry-in side engagement means of the moving body corresponding to the one conveyance path. Advancement from the upstream side to the downstream side of the movable body corresponding to the one conveyance path in a state of being sandwiched by the carriage located at the downstream end position of the one conveyance path engaged with the carry-out side engagement means Is transported to the downstream side by a certain amount. In synchronization with the movement of the movable body corresponding to the one conveyance path, the movable body corresponding to the other conveyance path is engaged with the carriage in the other conveyance path of the first conveyance path and the second conveyance path. With the state of being released, the vehicle moves backward from the downstream side to the upstream side in the other conveyance path.

  Then, when the moving body corresponding to the other transport path advances in the state where the carriage is engaged from the upstream side to the downstream side in the other transport path, the one in the one transport path is synchronized. The moving body corresponding to the transport path moves backward from the downstream side to the upstream side in a state where the engagement with the carriage is released.

  As described above, the driving device that moves the moving body corresponding to the first conveying path and the second conveying path forward and backward moves the moving body in a predetermined direction (for example, the direction moving forward from the upstream side to the downstream side in the first conveying path). The movement of the carriage on the first conveyance path is performed by movement, and the conveyance of the carriage on the second conveyance path is performed by the movement of the moving body in the direction opposite to the predetermined direction (for example, the backward direction in the first conveyance path). it can. For this reason, it is possible to efficiently transport a carriage on a plurality of transport paths with minimal operation without waste by a single drive device, without installing a drive device for each transport path as in the prior art. Space saving and cost reduction of equipment can be achieved.

  Further, when the carriages are transported along the first transport path and the second transport path, the plurality of carriages arranged in each transport path move corresponding to the one of the transport paths or the other transport path. Since it is transported in a state of being sandwiched from the upstream side and the downstream side by the body carry-in side engagement means and the carry-out side engagement means, it prevents the shock caused by the collision between the arranged carriages and transports the carriage safely. be able to.

  According to the second aspect of the present invention, the carry-in side engagement protrusion provided in the carry-in position side moving portion of the movable body is the carriage side of the carriage that is located at the carry-in position when the movable body advances from the upstream side to the downstream side. When the movable body is engaged with the front engaging protrusion from the upstream side and retracts from the downstream side to the upstream side, the engagement with the carriage side front engaging protrusion of the carriage is released.

  On the other hand, the unloading-side engagement protrusion provided in the unloading position-side moving portion of the moving body is a bogie-side rear engaging protrusion of the bogie located at the downstream end position when the moving body advances from the upstream side to the downstream side. Since it engages by contact | abutting from the downstream, the free movement to the downstream of the several trolley | bogie arranged in the conveyance path is controlled. The carry-out side engagement protrusion is provided at a position shifted to one of the directions orthogonal to the conveyance direction with respect to the carry-in side engagement protrusion, and the carriage-side front engagement with which the carry-in side engagement protrusion engages. Since it does not engage with the projection, when the moving body moves backward from the downstream side to the upstream side, only the moving body moves upstream without being caught by the front part of the carriage newly transported to the downstream end position. Can do.

  Thus, by providing the carry-in side engagement protrusion and the carry-out side engagement protrusion at positions shifted from each other in the direction orthogonal to the conveyance direction of the carriage, the carry-in side engagement protrusion and the carry-out side engagement protrusion are engaged. In addition, since it is not necessary to provide a mechanism for performing the advancing / retreating operation for releasing the engagement, and it is possible to construct a cart transport apparatus having an extremely simple engagement structure, it is possible to greatly reduce the equipment cost. it can.

According to the third aspect of the present invention, the rotational motion of the crank arm given by the inverter control motor is converted into the linear motion in the transport direction by the motion conversion device to reciprocate the moving body. By setting the crank arm to a substantially horizontal position at the start point and end point of swinging, the speed component in the transfer direction is reduced and the transfer is performed at low speed, and the crank arm passes the dead point (top dead center or bottom dead center). In this case, the speed component in the transport direction becomes large and high-speed transport is achieved. Therefore, it is safe to transport without damaging the placed mold etc. to the base vehicle, it is possible to transport at high speed in the portion that passes through the dead point in the middle of the conveyance, to perform the efficient rapid transport Can do. Inverter-controlled motors generally have a longer acceleration / deceleration time than servomotors, and the stopping accuracy after deceleration varies. However, in a mechanism using a crank arm, as described above, the start point and the deceleration point where acceleration is performed. The speed component in the transport direction with respect to the rotational speed is small at the end point where the operation is performed. Therefore, the accuracy deviation of the rotation angle during acceleration / deceleration has a small value that affects the positional deviation in the transport direction, and the moving body can be driven with sufficient accuracy to withstand use. In addition, the inverter control motor can be easily obtained in a relatively short delivery time even when the motor unit fails, and for example, the stop of the production line for replacing the motor unit can be completed in a short period of time.

  According to the fourth aspect of the present invention, the distance between the carry-in side engagement means and the carry-out side engagement means is the carry-out side from the engaged position of the carriage located at the carry-in position where the carry-in side engagement means engages. It is set longer by a gap of a predetermined length than the distance to the engaged position of the carriage located at the downstream end position where the engaging means engages. Then, a gap is provided between the carriage unloaded from the downstream end position and the subsequent carriage using the gap of the predetermined length.

 Therefore, in the middle of moving the moving body forward, the driving control means first stops the moving body at a temporary stop position before the unloading position side stop position facing the unloading position of the transport path. The carriage unloaded from the downstream end position is applied with an urging force that is separated from the succeeding carriage at the position where the carriage is temporarily stopped, and the movement toward the downstream side is restricted by the unloading-side engaging means, and the carriage is stopped. . Next, by moving the moving body forward again toward the unloading position side stop position, the restriction on the downstream side by the unloading side engaging means with respect to the carriage unloaded from the downstream end position is released, and at the same time, the downstream end position Since the carriage unloaded from the carriage moves following the carry-out side engaging means by urging by the urging means, a gap is formed between the following trolleys, and the carriage is positioned at the carry-out position in a state where this gap is produced. The

  Thus, since the carriage transported to the unloading position is positioned with a gap with respect to the neighboring carriage located on the upstream side (the succeeding carriage newly positioned at the downstream end position), In carrying out from the carrying-out position to the carrying-in position performed in parallel by the traverser, it can be smoothly conveyed without coming into contact with the carriage at the adjacent downstream end position.

BRIEF DESCRIPTION OF THE DRAWINGS The plane schematic diagram which shows 1st Embodiment of the trolley | bogie conveyance apparatus of this invention. The front schematic diagram of a trolley carrier. The top view which expands and shows FIG. 1 partially. The front view which expands and shows FIG. 2 partially. The figure which shows the VV cross section in FIG. The figure which shows the VI-VI cross section in FIG. The figure which shows the VII-VII cross section in FIG. The top view which shows the state which advances a 1st moving body and positions to a 1st carrying-out position. The front view which shows the state which advances a 1st moving body and positions to a 1st carrying-out position. The enlarged view which shows the state which stopped the moving body in front of the position corresponding to a 1st carrying-out position for a 1st moving body. The positioning enlarged view which shows the state which advances the 1st moving body again and positions the trolley | bogie which was in the downstream end position to the 1st carrying-out position. The top view which shows the process of transferring a trolley | bogie to a 2nd carrying-in position with a 2nd traverser. The top view which shows the state which advances a 2nd moving body and positions to a 2nd carrying-out position. The plane schematic diagram which shows 2nd Embodiment of the trolley | bogie conveyance apparatus of this invention. The plane schematic diagram which shows 3rd Embodiment of the trolley | bogie conveyance apparatus of this invention. The figure which shows the state which advances the mobile body in the 1st and 2nd 1st conveyance path, and positions it in a carrying-out position. The figure which shows the state in which the trolley | bogie was carried in to the carrying-in position of the 1st and 2nd 2nd conveyance path by the traverser. The figure which shows the state which advances the moving body in the 1st and 2nd 2nd conveyance path, and positions it in an unloading position. The plane schematic diagram which shows 4th Embodiment of the trolley | bogie conveyance apparatus of this invention. The front view of a trolley carrier. The plane schematic diagram which shows 5th Embodiment of the trolley | bogie conveyance apparatus of this invention. The front view of a trolley carrier. XXIII-XXIII sectional drawing in FIG. XXIV-XXXIV sectional drawing in FIG.

  1st Embodiment which implemented the cart conveyance apparatus concerning this invention to the cart conveyance apparatus which conveys a cast frame and a casting_mold | template in a casting line is described below based on figures. The cart transport apparatus 2 of the present embodiment is provided in parallel with the first transport path 6 for transporting the cart 4 in the left direction in FIG. 1 and the first transport path 6 and transports the cart 4 in the right direction in FIG. Between the second transport path 8 to be moved, the first carry-out position 11 aligned with the downstream end position 10 of the first transport path 6, and the second carry-in position 13 aligned with the upstream end position 12 of the second transport path 8. A traverser 18 provided between a second carry-out position 15 aligned with the downstream end position 14 of the second conveyance path 8 and a first carry-in position 17 aligned with the upstream end position 16 of the first conveyance path 6; A first moving body 20 provided below the path 6 and reciprocating along the conveying direction, a second moving body 22 provided below the second conveying path 8 and reciprocating along the conveying direction, and a first movement Crank arms 24, 26 linked to the body 20 and the second moving body 22, and the crank arm And an inverter control function motor 28 for rotating the 4,26.

  As shown in FIG. 2, a pair of carriage rails 32 mainly constituting the first transport path 6 is provided on the base 30, and a mold or a cast frame (not shown) is placed on the carriage rails 32. A plurality of carriages 4 are arranged in the transport direction. The pair of carriage rails 32 is laid correspondingly to the outside of the upper ends of the pair of I-shaped beams 34 extending in the conveying direction, and the pair of I-shaped beams 34 is supported by a plurality of support columns 36 protruding from the base 30. Thus, the carriage rail 32 is formed in an elevated shape.

  The second conveyance path 8 provided in parallel to the first conveyance path 6 is provided with a pair of carriage rails 32 mainly constituting the second conveyance path 8 in the same manner as the first conveyance path 6 (see FIG. 5). ), A plurality of carriages 4 on which a mold or a cast frame (not shown) is placed are arranged on the carriage rail 32 in the transport direction. The pair of carriage rails 32 is laid corresponding to the upper outer sides of the pair of I-shaped beams 34 extending in the conveying direction as in the first conveying path 6 (see FIG. 5). A carriage rail 32 is formed in an elevated shape supported by a plurality of pillars 36 protruding from the base 30.

  The first carry-in position 17 aligned with the upstream end position 16 of the first transport path 6 and the second carry-out position 15 aligned with the downstream end position 14 of the second transport path 8 are shown in FIGS. And as shown in FIG. 4, the 1st transfer rail 38 which connects the 1st carrying-in position 17 and the 2nd carrying-out position 15 is arrange | positioned. The first carry-in position 17 and the second carry-out position 15 are arranged in parallel, and the first transfer rail 38 extends in a direction perpendicular to the first transport path 6 and the second transport path 8. At the first carry-in position 17 on the first transfer rail 38, a transfer carriage 40 that is placed and moves in a direction perpendicular to the conveying direction is positioned. The transfer carriage 40 is aligned with the carriage rail 32 on the transfer base 44, the transfer wheel 42 that rolls on the first transfer rail 38, the transfer base 44 on which the transfer wheel 42 is rotatably supported. It has the transfer stand rail 46 provided (refer FIG. 4). When the transfer carriage 40 on which the carriage 4 is placed is located at the first carry-in position 17, the transfer carriage rail 46 is aligned with the carriage rail 32, and the carriage 4 placed on the transfer carriage rail 46 becomes the carriage rail of the first transport path 6. A plurality of carriages 4 placed on 32 are arranged with a predetermined gap t (see FIG. 3).

  As shown in FIG. 4, a protruding support portion 48 protrudes from the upper surface of the transfer base 44 on the conveyance path side, and the protruding support portion 48 has one end portion of a rod-like member 50 extending along the transfer table rail 46. It is rotatably connected by a rotation axis perpendicular to the transfer table rail 46. A disc-shaped rotating member 52 having a rotation axis perpendicular to the transfer table rail 46 is rotatably provided at the other end of the rod-shaped member 50, and a coil spring 54 is disposed at the other end of the intermediate portion of the rod-shaped member 50. Is provided. The coil spring 54 is disposed between the lower surface of the rod-shaped member 50 and the upper surface of the transfer base 44 and is configured to urge the other end of the rod-shaped member 50 upward. A stopper 56 is provided at the terminal end of the transfer table rail 46 (the end opposite to the conveyance path), and the carriage 4 is interposed between the stopper 56 and the rotating member 52 provided at the other end of the rod-like member 50. The cart 4 is positioned at the carry-out position 11 by sandwiching a rolling wheel 102 and a bearing portion 100 described later. The protruding support portion 48, the rod-shaped member 50, the coil spring 54 and the rotating member 52 constitute an urging means 57. The first transfer rail 38 and the transfer carriage 40 constitute a first traverser 55 as a traverser (see FIGS. 3 and 4). The stop position when the first moving body 20 transports the carriage 4 from the downstream end position 10 to the first unloading position 11, that is, the unloading position stop position 59 of the first moving body 20 corresponding to the first unloading position 11. Is positioned at the downstream end of the first transport path 6 (see FIG. 11). Further, a temporary stop position 61 of the first moving body 20 is positioned at a predetermined distance upstream from the unloading position side stop position 59 (see FIG. 10).

  As shown in FIG. 4, a separation stopper device 60 is provided at the downstream end position 10 of the first transport path 6. The separation stopper device 60 includes an air cylinder device 62 fixed to the lower side surface of the I-shaped beam 34, one end connected to the piston portion of the air cylinder device 62 that is pivotally supported on the side surface of the I-shaped beam 34, and the other end. And a crank device 64 having a stopper portion 58 that advances and retreats on the carriage rail 32. The stopper part 58 comes into contact with a front end part of a bearing part 100 (described later) on the front side of the carriage 4 positioned at the downstream end position 10 when the stopper part 58 moves forward on the carriage rail 32.

  The first carry-out position 11 aligned with the downstream end position 10 of the first conveyance path 6 and the second carry-in position 13 aligned with the upstream end position 12 of the second conveyance path 8 include the first carry-out position 11 and the second carry-out position 11. A second transfer rail 66 that connects the carry-in position 13 is arranged. The first carry-out position 11 and the second carry-in position 13 are arranged in parallel, and the second transfer rail 66 is perpendicular to the first transfer path 6 and the second transfer path 8 in the same manner as the first transfer rail 38. It extends to. At the first carry-out position 11 on the second transfer rail 66, a transfer carriage 40 that moves in a direction perpendicular to the transport direction is located. The configuration of the transfer carriage 40 is the same as that of the transfer carriage 40 in the first transfer rail 38. The second transfer rail 66 and the transfer carriage 40 constitute a second traverser 68 as a traverser.

  Moving body rails 70 parallel to the carriage rails 32 are respectively laid on the lower inner edges of the pair of I-shaped beams 34 of the first transport path 6 (see FIG. 5), and the moving body rails 70 include the first moving body 20. Rolling wheels 72 are placed (see FIGS. 4 and 5). The first moving body 20 includes a rectangular parallelepiped loading position side moving portion 20a provided on the upstream end position side (right side in FIG. 2) and a rectangular parallelepiped unloading position provided on the downstream end position side (left side in FIG. 2). The side moving part 20b and the connection part 20c which connects the carrying-in position side moving part 20a and the carrying-out position side moving part 20b are provided. The rolling wheels 72 are rotatably supported on the side portions of the carry-in position side moving unit 20a and the carry-out position side moving unit 20b in the front-rear and left-right directions (see FIGS. 4 and 5).

  Further, as shown in FIGS. 2 and 5, a bracket 74 that protrudes downward is provided at the lower portion on the upstream side of the carry-in position side moving unit 20 a, and one end portion of the first link member 76 rotates relative to the bracket 74. It is connected freely. Also, a rectangular carry-in engagement protrusion (carry-in engagement means) 78 protruding upward is provided on the upper portion of the carry-in position side moving portion 20a on the upstream end position side. The carry-in side engagement protrusion 78 is provided at a position shifted from the center of the first moving body 20 in the direction orthogonal to the conveyance direction (downward in FIG. 1 and left side in FIG. 5). It is comprised so that it may engage with the trolley | bogie side front part engaging protrusion 104. A rectangular carry-out engagement protrusion (carry-out engagement means) 80 that protrudes upward is provided on the upper portion of the carry-out position side moving portion 20b on the downstream end position side. The carry-out side engagement protrusion 80 is provided at a position shifted from the center in the direction orthogonal to the conveyance direction to the other side (upward in FIG. 1, right side in FIG. 6). It is configured to engage with the protrusion 106.

Similarly to the first conveyance path 6, the moving body rails 70 are also laid on the lower inner edges of the pair of I-shaped beams 34 of the second conveying path 8, and the rolling wheels 72 of the second moving body 22 are arranged on the moving body rails 70. Is slidably mounted. Similarly to the first moving body 20, the second moving body 22 has a rectangular parallelepiped loading position side moving portion 22a provided on the upstream end position side (left side in FIG. 3 ) and the downstream end position side (right side in FIG. 3 ). And a connecting portion 22c for connecting the carrying-in position side moving portion 22a and the carrying-out position side moving portion 22b. Similar to the first moving body 20, the rolling wheels 72 are pivotally supported on the side portions of the loading position side moving portion 22a and the unloading position side moving portion 22b, respectively in the front, rear, left and right directions. As shown in FIG. 5, a bracket 74 projecting downward is provided at the downstream side lower portion of the carry-out position side moving portion 22b, and one end portions of the second link member 82 are rotatably connected to the bracket 74. ing.

  In the second transport path 8, similarly to the first transport path 6, a rectangular transport-side engagement protrusion (upwardly protruding) is formed on the upper part of the upstream end position side (left side in FIG. 1) of the transport position-side moving unit 22 a. A carry-in side engagement means 84) is provided. The carry-in side engagement projection 84 is provided at a position shifted from the center of the second moving body 22 in the direction orthogonal to the conveyance direction (upward in FIG. 1 and right side in FIG. 6). It is comprised so that it may engage with the trolley | bogie side front part engaging protrusion 104. A rectangular unloading-side engaging projection (unloading-side engaging means) 86 that protrudes upward similarly to the first conveying path 6 is also provided on the upper portion of the unloading position-side moving portion 22b on the downstream end position side. The carry-out side engagement protrusion 86 is provided at a position shifted from the center in the direction orthogonal to the conveyance direction to the other side (downward in FIG. 1, left side in FIG. 5). It is configured to engage with the protrusion 106.

  The crank arms are provided as first crank arms 24 and second crank arms 26 in the first transport path 6 and the second transport path 8, respectively, corresponding to intermediate positions in the longitudinal direction of the moving body rail 70. As shown in FIGS. 1 and 7, a motor 28 with an inverter control function is attached beside the longitudinal intermediate position of the second transport path 8. A fixing base 88 that protrudes outward is formed in the middle of the support 36 in the second transport path 8 (see FIG. 7), and the motor 28 with an inverter control function is fixed to the fixing base 88. The drive shaft 90 of the motor 28 is disposed at right angles to the conveyance direction of the conveyance paths 6 and 8, and a pair of bearings 89 provided on the lower surface of the outer I-shaped beam 34 in the first conveyance path 6 and the second conveyance path 8. It is rotatably supported by. As shown in FIG. 7, the first crank arm 24 and the second crank arm 26 are assembled to the drive shaft 90 at the base end portions so as not to rotate relative to each other. Each of the crank arms 24 and 26 is positioned substantially horizontally at the starting point at which the moving bodies 20 and 22 start moving forward, and passes through the bottom dead center during rotation to end at the end point at which the moving bodies 20 and 22 finish moving forward. Located approximately horizontally on the opposite side. Further, the other ends of the link members 76 and 82 are connected to the distal ends of the crank arms 24 and 26 so as to be relatively rotatable, and the rotational movement of the crank arms 24 and 26 is caused to move in the linear direction of the moving bodies 20 and 22. A slider crank mechanism 27 is configured as a motion conversion device that converts the motion into the following motion (see FIG. 2). Further, the motor 28 with the inverter control function and the drive shaft 90 constitute a drive device. And the 1st crank arm 24 in the 1st conveyance path 6 and the 2nd crank arm 26 in the 2nd conveyance path 8 rotate in the same direction simultaneously. For this reason, the first transport path 6 and the second transport path 8 in which the carriage 4 is transported in directions opposite to each other differ in the positioning of the moving bodies 20 and 22 in the forward / backward directions with respect to the rotation direction of the crank arm. Specifically, in FIG. 2, when the first moving body 20 moves forward by the clockwise rotation of the first crank arm 24 in the first transport path 6, the second crank arm 26 rotates in the second transport path 8. The second moving body 22 moves backward by the rotation of the second crank arm 24, and the second crank arm in the second transport path 8 when the first moving body 20 moves backward by the counterclockwise rotation of the first crank arm 24 in the first transport path 6. The second moving body 22 advances by the counterclockwise rotation of 26.

  In addition, since the front part and the rear part of the carriage 4 are described with reference to the conveyance direction, the part indicated as the carriage-side front engagement protrusion 104 in the first conveyance path 6 is the second conveyance path 8. The carriage side rear engagement protrusion 106 is indicated.

  Further, in the rotation path of the first crank arm 24, a decelerating proximity switch 92 is provided at a position passing through the bottom dead center, a temporary proximity proximity switch 94 is provided at a predetermined position before the end point, and a final end position is provided at the end point position. Proximity switches 96 are provided on each of the forward and backward paths where the first crank arm 24 swings. When the crank arm 24 reaches the position where these switches are arranged, a predetermined rotation control is performed on the motor 28 with an inverter control function. These motor 28 with inverter control function, deceleration proximity switch 92, temporary stop proximity switch 94, and final end proximity switch 96 constitute drive control means. Similarly, the second crank arm 26 is provided with these proximity switches.

  As shown in FIG. 5, the carriage 4 arranged in each of the transport paths 6 and 8 includes a rectangular mounting table 98, a bearing unit 100 projecting front and rear, left and right below the mounting table 98, and left and right pairs A rolling wheel 102 that is rotatably supported by the bearing unit 100 and that rolls on the carriage rail 32 is provided. A carriage-side front engaging protrusion 104 that protrudes downward is provided at the front of the mounting table 98 in the transport direction. The carriage-side front engaging protrusion 104 is one from the center in the direction orthogonal to the conveying direction on the mounting table 98 of the carriage 4 (the first conveying path 6 is downward in FIG. 1, the left side in FIG. 5, the second conveying path). 8 is provided at a position shifted upward in FIG. 1 and to the right in FIG. 6 and engages with carry-in side engagement protrusions 78 and 84 provided on the carry-in position side moving portions 20a and 22a of the moving body. It is configured as follows.

  A carriage-side rear engagement protrusion 106 that protrudes downward is provided at the rear of the mounting table 98 in the transport direction. The rear engagement protrusion 106 on the carriage side is the other of the center of the carriage 98 of the carriage 4 in the direction orthogonal to the conveyance direction (in the first conveyance path, the upper side in FIG. 1, in the right side in FIG. 6, in the second conveyance path). 1 are provided at positions shifted downward in FIG. 1 and to the left (not shown) in FIG. 5, and are provided on the carry-out position side moving portions 20b, 22b of the moving bodies 20, 22. Configured to engage.

  Next, operation | movement of the trolley | bogie conveyance apparatus 2 comprised as mentioned above is demonstrated below based on figures. First, as shown in FIG. 1, in the first transport path 6, the first moving body 20 is held in the retracted state at the first carry-in position 17, and then the first traverser 55 makes the first move from the second carry-out position 15. The carriage 4 is transferred to the carry-in position 17.

Here, the carry-out side engaging protrusion 80 and the carry-in side engaging protrusion 78 of the first moving body 20 are fixed to the first moving body 20, and the length between the two engaging protrusions 78 and 80 is also set. Fixed to a certain level. Before the carriage 4 is carried into the first carry-in position 17, the carriage-side rear engagement protrusion 106 of the carriage 4 located at the downstream end position 10 and the carry-out position-side moving section 20 b of the first moving body 20 Upstream of the first conveyance path 6 from the cart 4 positioned at the downstream end position 10 of the first conveyance path 6 engaged with the provided unloading-side engagement protrusion 80 and engaged with the unloading-side engagement protrusion 80. A plurality of carriages 4 are arranged in the first transport path 6 up to the carriage 4 located at the end position 16. Therefore, when the cart 4 is carried into the first carry-in position 17, if there is no gap between the cart 4 to be carried in and the cart 4 located at the upstream end position 16, they come into contact with each other and smooth carry-in is achieved. I can't do it. In addition, if there is no clearance in the transport direction between the carry-in side engagement projection 78 of the first moving body 20 and the cart-side front engagement projection 104 of the cart 4 to be carried in, the direction from the direction perpendicular to the transport direction is When the carriage 4 is carried in, the corner of the carry-in side engagement projection 78 and the corner of the carriage-side front engagement projection 104 of the carriage 4 to be carried in contact cannot be engaged. Further, if there is no gap between the carriage 4 transported to the first carry-out position 11 and the carriage 4 adjacent thereto (at the downstream end position 10), the carriage 4 at the first carry-out position 11 is moved by the second traverser 68. It is impossible to smoothly move the carriage 4 in the direction perpendicular to the conveying direction by disengaging the carriage-side front engaging protrusion 106 and the carry-out-side engaging protrusion 80. On the other hand, if a large gap is provided between the carriages 4, a plurality of arranged carriages 4 collide with each other during transportation, and the mold placed on the carriage 4 is damaged.

  Therefore, in the present embodiment, as shown in FIG. 3 described in the configuration, in order to smoothly carry the carriage 4 to the first carry-in position 17, the carriage 4 positioned at the first carry-in position 17 and the downstream side thereof. The length between the carry-out side engagement projection 80 and the carry-in side engagement projection 78 is sandwiched between them so that a predetermined gap t is formed between the adjacent cart 4 at the upstream end position 16. The lengths of the plurality of carriages 4 are set in advance.

  And when positioning to the 1st carrying-in position 17, while carrying in the state which provided the clearance gap between the trolley | bogie 4 carried in to the 1st carrying-in position 17 and the trolley | bogie 4 located in the upstream end position 16, trolley | bogie 4 The carriage-side front engaging protrusion 104 and the carry-in side engaging protrusion 78 of the first moving body 20 are also arranged with some clearance therebetween. Then, the movement of the first moving body 20 toward the downstream side causes the carriage-side front engagement protrusion 104 and the carry-in engagement protrusion 78 to engage in the transport direction. Further, as described above, the carriage-side rear engagement protrusion 106 of the carriage 4 at the downstream end position 10 of the first conveyance path 6 has a carry-out side engagement provided in the carry-out position side moving part 20 b of the first moving body 20. The mating protrusion 80 is in contact with and engaged from the downstream side. As a result, the carriage 4 at the downstream end position 10 with which the carry-out side engagement protrusion 80 engages and the carriage 4 at the carry-in position 17 with which the carry-in side engagement protrusion 78 engages, along the conveyance path therebetween. It is set as the state which pinched | interposed the some trolley | bogie 4 arranged.

  Next, the inverter control function motor 28 is driven to rotate the first crank arm 24 clockwise in FIG. 2 (the second crank arm 26 also rotates simultaneously). The rotational motion of the first crank arm 24 is transmitted to the loading position side moving portion 20a of the first moving body 20 via the first link member 76, and the first moving body 20 moves in parallel to the carriage rail 32. Advancing from the upstream direction to the downstream direction along the body rail 70. The rotary motion of the first crank arm 24 is converted into a linear motion in the transport direction by the slider crank mechanism 27 to advance the first moving body 20. Since the first crank arm 24 is in a substantially horizontal position at the position of the swing start point and end point, the speed component in the transport direction is small and the transport is performed at low speed, and the first crank arm 24 is dead center (top dead center or bottom dead center). When passing the point), the speed component in the transport direction is large, resulting in high-speed transport. As a result, the vehicle 4 engaged with the first moving body 20 is not suddenly accelerated or decelerated, so that it is possible to carry out the transfer quickly without breaking the mold placed on the vehicle 4.

  In the present embodiment, when the rotation of the first crank arm 24 has passed the bottom dead center, control is performed to reduce the rotation of the motor 28 by the deceleration proximity switch 92, and at a predetermined position before the end point by the temporary stop proximity switch 94. The first crank arm 24 is stopped. The gap t provided between the cart 4 at the first carry-in position 17 and the cart 4 adjacent thereto first has a plurality of carts 4 arranged according to the acceleration accompanying the started movement of the first moving body 20. Since it is pressed by the carry-in side engagement protrusion 78, it moves downstream, for example, a gap t between the carry-out side engagement protrusion 80 and the carriage-side rear engagement protrusion 106 of the carriage 4 at the downstream end position 10. Produce.

  Next, the first moving body 20 is stopped at the temporary stop position 61 by stopping the first crank arm 24 at a predetermined position before the end point by the temporary stop proximity switch 94. By this stop, as shown in FIG. 10, due to the inertial force toward the downstream side at the time of deceleration, between the carry-out side engagement projection 80 and the carriage-side rear engagement projection 106 of the carriage 4 at the downstream end position 10. The generated gap t moves to the upstream side of the plurality of carts 4 arranged. In this case, as shown in FIG. 10, the rolling wheel 102 in the front portion of the carriage 4 that was at the downstream end position 10 is in the rotating member 52 of the urging means 57 of the transfer carriage 40 that is located at the first carry-out position 11. The rolling wheel 102 is stopped from the top of the head and is urged from the upstream side to the downstream side (leftward in FIG. 10) by the coil spring 54 using the circumferential curved surface of the rotating member 52. .

  Next, the first crank arm 24 is rotated again, and the first moving body 20 is moved to the unloading position side stop position 59 which is a position corresponding to the first unloading position 11 in the first transport path 6. By moving, first, a gap t is generated between the carry-out side engagement protrusion 80 and the carriage-side rear engagement protrusion 106 of the carriage 4 (the carriage 4 carried out from the downstream end position 10) at the downstream end position 10. Let Then, the rolling wheel 102 is urged forward by the coil spring 54 using the circumferential curved surface of the rotating member 52 by the length of the gap and moves to the first carry-out position 11 where the carriage 4 is finally positioned. As a result, as shown in FIGS. 8, 9 and 11, a gap t is generated between the carriage 4 transported to the first carry-out position 11 and the carriage 4 located adjacent to the upstream side thereof. In the present embodiment, the carriage 4 positioned next to the upstream side (the carriage 4 newly located at the downstream end position 10) is brought into contact with the bearing portion 100 of the carriage 4 by the stopper portion 58 of the separation stopper device 60 coming into contact with the downstream side. Therefore, the gap t is more reliably generated. As shown in FIG. 11, the cart 4 biased to the downstream side contacts the stopper 56 at the front end portion of the bearing portion 100 and is positioned at the first carry-out position 11 on the transfer cart 40 of the second traverser 68. Is done.

The positioned carriage 4 is carried into the second carry-in position 13 of the second transfer path 8 from the first carry-out position 11 as shown in FIG. At that time, the second moving body 22 in the second transport path 8 is in a retracted state, and the carry-in side engaging protrusion 84 of the second moving body 22 is located upstream of the carriage-side front engaging protrusion 104 of the carriage 4 ( 12 engage from the left). At the downstream end of the second transport path 8, the carry-out side engagement protrusion 86 engages with the carriage-side rear engagement protrusion 106 of the carriage 4 at the downstream end position 14 from the downstream side. Then, the carriage 4 at the downstream end position 14 with which the carry-out side engagement protrusion 86 engages and the carriage 4 at the carry-in position 13 with which the carry-in side engagement protrusion 84 engages are arranged along the conveyance path therebetween. It is set as the state which clamped the several trolley | bogie 4 made.

  Next, the motor 28 is driven to rotate the second crank arm 22 counterclockwise as shown in FIG. Thus, the second moving body 22 is moved forward, and the plurality of carriages 4 are moved along the second transport path 8 by a certain amount in the right direction in FIG. By this fixed amount of movement, the carriage 4 that was at the downstream end position 14 is transported to the second carry-out position 15 as shown in FIG. The details of the operation in the second transport path 8 are substantially the same as the operation in the first transport path 6, and thus the description thereof is omitted.

  According to the cart transport device 2 configured as described above, when the moving body 20 corresponding to the first transport path 6 is advanced from the upstream side to the downstream side by the drive device 28, the upstream end position side of the mobile body 20 is reached. The carry-in side engagement projection 78 provided on the side engages with the carriage-side front engagement projection 104 of the carriage 4 at the first carry-in position 17, and the carry-out provided on the downstream end position side of the movable body 20. The side engagement projection 80 engages with the carriage side rear engagement projection 106 of the carriage 4 at the downstream end position 10 so as to restrict free movement in the downstream direction. Therefore, the plurality of carriages 4 arranged in the first conveyance path 6 are located at the first carry-in position 17 engaged with the carry-in side engagement protrusion 78 of the moving body 20 corresponding to the first conveyance path 6. And the carriage 4 positioned at the downstream end position 10 engaged with the carry-out side engagement projection 80, and the moving body 20 corresponding to the first transport path 6 advances from the upstream side to the downstream side. A certain amount is conveyed all at once downstream. In synchronization with the movement of the first moving body 20 corresponding to the first conveying path 6, the second moving body 22 corresponding to the second conveying path 8 is disengaged from the carriage 4 in the second conveying path 8. In this state, the second transport path 8 moves backward from the downstream side to the upstream side. The carriage 4 conveyed from the downstream end position 10 of the first conveyance path 6 to the first carry-out position 11 is conveyed by the second traverser 68 to the second carry-in position 13 parallel to the first carry-out position 11. A carriage-side engagement protrusion 84 provided on the upstream end position side of the moving body 22 corresponding to the second transport path 8 is formed on the carriage-side front engagement protrusion 104 of the carriage 4 carried into the second carry-in position 13. The carriage-side rear portion of the carriage 4 that engages and has a carry-out side engagement projection 86 provided on the downstream end position side of the moving body 22 corresponding to the second conveyance path 8 at the downstream end position 14 of the second conveyance path 8. Engage with the engaging protrusion 106 so as to restrict free movement in the downstream direction. Then, when the moving body 22 corresponding to the second transport path 8 is advanced from the upstream side to the downstream side by the driving device 28, the plurality of carriages 4 arranged in the second transport path 8 corresponds to the second transport path 8. The movable body 22 is sandwiched between the carriage 4 located at the second carry-in position engaged with the carry-in side engagement protrusion 84 and the carriage 4 located at the downstream end position 14 engaged with the carry-out side engagement protrusion 86. In this state, a certain amount is conveyed all at once from the upstream side to the downstream side of the second conveyance path 8. In synchronization with the movement of the second moving body 22 in the second conveying path 8, the first moving path 20 corresponding to the first conveying path 6 in the first conveying path 6 is disengaged from the carriage 4 in the first state. Retreat from the downstream side to the upstream side in the transport path 6.

  As described above, when the carriage 4 is transported along the first transport path 6 and the second transport path 8, the loading-side engagement protrusions 78 and 84 and the unloading-side engagement protrusion 80, of the corresponding moving bodies 20 and 22, Therefore, the carriage 4 can be safely conveyed while preventing an impact caused by a collision between the carriages. Further, when the moving device 20 corresponding to the first transport path 6 moves forward from the upstream side to the downstream side by the drive device 28 with the carriage 4 engaged, the second transport is performed simultaneously. In the path 8, the moving body 22 corresponding to the second transport path 8 moves backward from the downstream side to the upstream side in a state where the engagement with the carriage 4 is released. When the movable body 22 corresponding to the second transport path 8 moves forward in the second transport path 8 with the plurality of carriages 4 engaged from the upstream side to the downstream side, the first transport path 6 is simultaneously used. , The moving body 20 corresponding to the first transport path 6 moves backward from the downstream side to the upstream side in a state where the engagement with the carriage 4 is released. Thus, by the drive device 28 that moves the moving bodies 20 and 22 forward and backward, the carriage 4 is transported along the first transport path 6 by the movement of the moving body 20 in a predetermined direction (for example, the forward traveling direction in the first transport path 6). The carriage 4 can be transported along the second transport path 8 by the movement of the moving body 22 in the direction opposite to the predetermined direction (for example, the retreat direction in the first transport path 6). Therefore, it is possible to efficiently transport the carriage 4 in the plurality of transport paths 6 and 8 with the minimum operation without waste by the single drive apparatus 28 without providing the drive apparatus 28 for each transport path as in the prior art. In addition, the space for installing the drive device 28 can be saved and the cost of the equipment can be reduced.

  Further, the carry-in side engagement projection 78 provided on the carry-in position side moving portion 20a of the first moving body 20 is located at the first carry-in position 17 when the first moving body 20 advances from the upstream side to the downstream side. Engage with the trolley-side front engagement protrusion 104 of the trolley 4 from the upstream side, and engage with the trolley-side front engagement protrusion 104 of the trolley 4 when the first moving body 20 moves backward from the downstream side to the upstream side. Is released. On the other hand, the unloading side engagement protrusion 80 provided on the unloading position side moving portion 20b of the first moving body 20 is located at the downstream end position 10 when the first moving body 20 advances from the upstream side to the downstream side. Since it engages by contacting the carriage side rear engagement protrusion 106 of the carriage 4 from the downstream side, the free movement of the plurality of carriages 6 arranged in the first transport path 6 to the downstream side is restricted. The carry-out side engagement protrusion 80 is provided on the first moving body 20 at a position shifted to the other side from the center in the direction orthogonal to the conveyance direction of the carriage 4, and one side from the center in the direction orthogonal to the conveyance direction of the carriage 4. Therefore, when the first moving body 20 moves backward from the downstream side to the upstream side, it is newly transported to the downstream end position 10. Only the first moving body 20 can be moved upstream without being caught by the front portion of the cart 4 and can be engaged with the rear portion of the cart 4 newly transported. In this way, the carry-in side engagement projection 78 is provided at a position shifted to one side from the center in the direction orthogonal to the transport direction of the carriage 4, and the carry-out side engagement projection 80 is shifted to the other side from the center in the direction orthogonal. By providing the carriage conveying device having the extremely simple engagement structure, the carry-in side engagement projection 78 and the carry-out side engagement projection 80 do not require a mechanism for performing forward and backward movement for engagement and disengagement. Since it can be constructed, it is possible to greatly reduce the equipment cost.

  It is to be noted that the carry-in side engagement projection 78 is provided at a position shifted to one side from the center in the direction orthogonal to the conveyance direction, and the carry-out side engagement projection 80 is provided at a position shifted from the center in the direction orthogonal to the conveyance direction to the other. However, the present invention is not limited to this. For example, the carry-in side engagement protrusion and the carry-out side engagement protrusion are provided at positions shifted from each other in the direction orthogonal to the conveyance direction, and the carry-in side engagement protrusion is connected to the carriage side rear portion. Any one that does not engage with the mating protrusion and does not engage the carrying-side engagement protrusion with the carriage-side front engagement protrusion may be used.

Further, the rotary motion of the crank arm 24 given by the inverter control motor 28 is converted into a linear motion in the transport direction by the slider crank mechanism 27 to reciprocate the first moving body 20. By setting the crank arm 24 to a substantially horizontal position at the position of the swing start point and end point, the speed component in the transfer direction is reduced and the transfer is performed at a low speed, and the crank arm 24 is dead center (top dead center or bottom dead center). In the case of passing through, the speed component in the transport direction becomes large and high-speed transport is achieved. Therefore, it is safe to transport without damaging the placed mold like the platform car 4, it is possible to transport at high speed in the portion that passes through the dead point in the middle of the conveyance, perform efficient rapid transport be able to. The inverter control motor 28 generally has a longer acceleration / deceleration time than the servo motor, and the stopping accuracy after deceleration varies. However, in the mechanism using the crank arm 24, the start point of acceleration is performed as described above. The speed component in the transport direction with respect to the rotational speed is small at the end point where deceleration is performed. Therefore, the accuracy deviation of the rotation angle during acceleration / deceleration has a small value that affects the positional deviation in the transport direction, and the moving body can be driven with sufficient accuracy to withstand use. In addition, the inverter control motor can be easily obtained in a relatively short delivery time even when the motor unit fails, and for example, the stop of the production line for replacing the motor unit can be completed in a short period of time.

  In addition, the distance between the carry-in side engagement projection 78 and the carry-out side engagement projection 80 in the first conveyance path 6 is set so that the carriage 4 located at the first carry-in position 17 where the carry-in side engagement projection 78 engages is covered. The distance from the engagement position (cart side front engagement projection 104) to the engaged position (cart side rear engagement projection 106) of the cart 4 located at the downstream end position 10 where the carry-out side engagement projection 80 is engaged. Is set longer than the gap of a predetermined length. Then, a gap t is provided between the carriage 4 carried out from the downstream end position 10 and the subsequent carriage 4 by using the gap of the predetermined length.

  Therefore, in the middle of moving forward the first moving body 20, first, the first moving body 20 is unloaded at the position opposite to the first unloading position 11 of the first conveying path 6 using the control function of the motor 28 with an inverter control function. It stops at the temporary stop position 61 before the side stop position 59 (see FIGS. 10 and 11). The carriage 4 unloaded from the downstream end position 10 is applied with an urging force that separates from the subsequent carriage 4 at the temporarily stopped position, and the movement toward the downstream side is restricted by the unloading side engaging projection 80 and stopped. It will be in the state. Next, when the first moving body 20 is moved forward again toward the unloading position side stop position 59, the downstream restriction by the unloading side engaging projection 80 with respect to the carriage 4 unloaded from the downstream end position 10 is released. At the same time, the carriage 4 carried out from the downstream end position 10 moves following the carry-out side engaging projection 80 by the urging force of the urging means 57, so that a gap t is formed between the following carriage 4. In this state, the gap t is positioned at the first carry-out position 11.

  In this way, the carriage 4 transported to the first carry-out position 11 has a gap t with respect to the carriage located on the adjacent upstream side (the succeeding carriage 4 newly positioned at the downstream end position 10). Since it is provided and positioned, when it is carried out by the second traverser 68 from the first carry-out position to the second carry-in position 13 of the second conveyance path 8 arranged in parallel, it comes into contact with the carriage 4 at the adjacent downstream end position 10. It can be transported smoothly without any problems.

  In this way, the carriage transport device 2 in which the carry-in side engagement protrusion 78 and the carry-out side engagement protrusion 80 of the first mobile body 20 corresponding to the first transport path 6 are fixed to the first mobile body 20. Even so, since a predetermined gap t can be provided between the first carry-in position 17 or the carriage 4 at the positions 16 and 10 adjacent to the first carry-out position 11, the carry-in and carry-out can be performed smoothly and The carriage can be transported quickly.

  Note that the carriage 4 is similarly transported in the second transport path 8.

  Next, a second embodiment in which the cart conveyance device according to the present invention is implemented in a cart conveyance device that conveys a cast frame and a mold in a casting line will be described with reference to the drawings. As shown in FIG. 14, the cart transport apparatus 202 in the present embodiment includes a first second transport path 204 and a second second transport path 206 as a second transport path. The transport path 204 is provided with a first second moving body 205 that moves along the transport path 204, and a second second transport path 206 that moves along the transport path 206 is provided in the second second transport path 206. The second moving body 207 is provided, and the first second moving body 205 and the second second moving body 207 and the first moving body 20 are the motor 28 with an inverter control function, as in the first embodiment. Is reciprocated by a certain amount along the transport paths 6, 204, 206 provided on the basis of the rotation of a crank arm (not shown) driven by the motor.

The first second carry-in position 210 is positioned at a position aligned with the upstream end position 208 of the first second transport path 204, and the position is aligned with the upstream end position 212 of the second second transport path 206. Is located at the second second carry-in position 214. The first carry-in position 11, the first second carry-in position 210, and the second second carry-in position 214 are arranged in parallel, and the first second carry-in position 210 and the second second carry-in position 214 are the first. The carriage 4 is moved from the first carry-out position 11 aligned with the downstream end position 10 of the first transport path 6 by the moving carriage 40 in the second traverser 216 at a position on the second traverser 216. The first second carry-out position 220 is positioned at a position aligned with the downstream end position 218 of the first second transport path 204, and the position is aligned with the downstream end position 222 of the second second transport path 206. Has a second second carry-out position 224. The first carry-in position 17, the first second carry-out position 220, and the second second carry-out position 224 are arranged in parallel, and the first second carry-out position 220 and the second second carry-out position 224 are A position on the first traverser 226, and the carriage 4 conveyed to the first second carry-out position 220 or the second second carry-out position 224 by the moving carriage 40 in the first traverser 226 is connected to the first conveyance path 6. It is configured to be transferred to a first loading position 17 aligned with the upstream end position 16 . Since other configurations are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

  In the cart conveyance device 202 of the present embodiment, the crank arms (not shown) provided respectively are simultaneously rotated by the rotation of the motor 28 with an inverter control function. As described above, the first moving body 20, the first second moving body 205, and the second second moving body 207 simultaneously reciprocate by a certain amount by the rotation of the crank arm. Then, in the transport path in which the carriage 4 is carried into one of the carry-in positions 17, 210, 214, the carriage 4 is engaged with any one of the moving bodies 20, 205, 207 and is transported by a certain amount from the upstream side to the downstream side. Is done. Since other operations are the same as those of the cart conveyance device of the first embodiment, description thereof is omitted.

  As in the present embodiment, also in the cart transport apparatus 202 including one first transport path 6 and two second transport paths 204 and 206, the cart 4 is driven by a single drive device (motor with an inverter control function) 28. Can be transported quickly and safely.

  Next, 3rd Embodiment which implemented the cart conveying apparatus concerning this invention to the cart conveying apparatus which conveys a cast frame and a casting_mold | template in a casting line is described below based on figures. As shown in FIG. 15, the cart conveyance device 302 in this embodiment includes a first first conveyance path 304 and a second first conveyance path 306 as the first conveyance path, and 1 as the second conveyance path. The second transport path 308 and the second transport path 310 are provided. Further, as a traverser, the first first unloading position 312 aligned with the downstream end position 311 of the first first transport path 304 and the first first unaligned position aligned with the upstream end position 313 of the first second transport path 308. The first traverser 316 connecting the second carry-in position 314 and the first second carry-out position 318 aligned with the downstream end position 317 of the first second transport path 308 or the downstream end of the second second transport path 310. The second second unloading position 320 aligned with the position 319 and the first first loading position 322 aligned with the upstream end position 321 of the first first conveying path 304 or the upstream of the second first conveying path 306. The second traverser 324 connecting the second first carry-in position 325 aligned with the end position 323, and the second first carry-out positions 327 and 2 aligned with the downstream end position 326 of the second first carry-out path 306. Second And a third traverser 330 that connects the second loading position 329 of the second aligning the upstream end position 328 of the sending passage 310. The first first transport path 304 is provided with a first first moving body 332 that reciprocates a certain amount along the transport path 304. The first second transport path 308 is provided with a first second moving body 333 that reciprocates a certain amount along the transport path 308. The second first transport path 306 is provided with a second first moving body 334 that reciprocates a predetermined amount along the transport path 306. The second second transport path 310 is provided with a second second moving body 335 that reciprocates a certain amount along the transport path 310. Each conveyance path 304, 306, 308, 310 is provided with a crank arm (not shown) driven by the motor 28 with an inverter control function, and the movable bodies are reciprocated by a certain amount simultaneously by the crank arms. ing. In the second traverser 324, the transfer carriages 40 are connected to each other by a connecting member 336 so as not to move relative to each other, and simultaneously move on the transfer rail. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

Next, operation | movement of the trolley | bogie conveyance apparatus 302 comprised as mentioned above is demonstrated below based on figures. First, as shown in FIG. 15, in the first first transport path 304 and the second first transport path 306, the first first carry-in position 322 and the second first carry-in position 325 are respectively first. The upstream end positions of the first moving body 332 and the second first moving body 334 are held in the retracted state. Subsequently, the cart 4 is transferred from the first second carry-out position 318 to the second first carry-in position 325 by the second traverser 324, and at the same time, the first first carry-in position 322 from the second second carry-out position 320. The carriage 4 is transferred to the vehicle. When positioning at each of the first carry-in positions 322 and 325, the carriage-side front engagement protrusion 104 of each carriage 4 is located at a position facing the downstream side of the carry-in engagement protrusion 78 of each of the first moving bodies 332 and 334. Positioning is performed, and the carriage-side front engaging protrusion 104 and the carry-in side engaging protrusion 78 engage in the transport direction by the downstream movement of the first moving bodies 332 and 334. Carriage side rear engagement protrusions 106 of the carriage 4 at the downstream end positions 311 and 326 of the first conveying paths 304 and 306 are respectively provided with the carry-out side engagement protrusions 80 of the first moving bodies 332 and 334 from the downstream side. Engaged in contact. By the carriage 4 at the downstream end position 311,326 of the carry-out side engaging protrusion 80 is engaged, the carriage 4 at the loading position 322,325 that carry side engaging protrusion 78 is engaged, their carriage 4 A plurality of carts 4 arranged along the transport paths 304 and 306 are sandwiched between the two.

  Next, the motor 28 with an inverter control function is driven, the crank arm (not shown) is rotated in a predetermined direction, the first moving bodies 332 and 334 are moved forward by a predetermined amount, and the second moving bodies 333 and 335 are moved forward. Move back a certain amount. As a result, as shown in FIG. 16, the cart 4 that was at the downstream end position 311 in the first first transport path 304 and the cart 4 that was at the downstream end position 326 in the second first transport path 306 are as shown in FIG. They are transported to the respective unloading positions 312 and 327 and placed on the transfer carriage 40. Since the details of the conveyance are the same as those of the cart conveyance device 2 of the first embodiment, the description thereof is omitted.

Next, as shown in FIG. 17, the first traverser 316 transfers the cart 4 that was in the first first carry-out position 312 to the first second carry-in position 314, and the first second transport. Aligned to the upstream end position 313 of the path 308. Further, the third traverser 330 transfers the carriage 4 that has been in the second first carry-out position 327 to the second second carry-in position 329 and moves it to the upstream end position 328 of the second second conveyance path 310. Aligned. At this time, the cart-side front engagement protrusions 104 of the aligned carts 4 are engaged with the carry-in engagement projections 84 of the retracted second moving bodies 333 and 335. On the downstream side of each second transport path 308, 310, the carriage-side rear engagement protrusion 106 of each carriage 4 placed at the downstream end position 317, 319 is an unloading-side engagement protrusion on each second moving body 333, 335. 86 are respectively engaged. In the second traverser 324, the connected empty transfer carriage 40 is transferred to the second carry-out positions 318 and 320 in the first and second second transfer paths 308 and 310.

Next, the motor 28 with an inverter control function is driven, the crank arm (not shown) is rotated in a predetermined direction, the second moving bodies 333 and 335 are moved forward by a predetermined amount, and the first moving bodies 332 and 334 are moved forward. Retract a certain amount. Accordingly, as shown in FIG. 18, the cart 4 that was at the downstream end position 317 in the first second transport path 308 and the cart 4 that was at the downstream end position 319 in the second second transport path 310 are as shown in FIG. They are transported to the respective second carry-out positions 318 and 320 and placed on the transfer carriage 40. Since the details of the conveyance are the same as those of the cart conveyance device 2 of the first embodiment, the description thereof is omitted.

  As in the present embodiment, two first transport paths 304 and 306 and two second transport paths 308 and 310 are provided, for example, cart transport that requires a long transport path as a cooling area after pouring. Also in the device 302, the carriage 4 can be transported quickly and safely by a single drive device (motor with inverter control function) 28.

  Next, a fourth embodiment in which the cart conveyance device according to the present invention is implemented in a cart conveyance device that conveys a cast frame and a mold in a casting line will be described with reference to the drawings. In the cart transport apparatus 402 in the present embodiment, as shown in FIGS. 19 and 20, the cart 404 includes a cart-side front engaging protrusion 406 that protrudes downward at the front edge and extends in a direction perpendicular to the transport direction. A carriage-side rear engagement protrusion 408 is provided which protrudes downward at the rear edge and extends in a direction perpendicular to the conveying direction. In the first transport path 6 and the second transport path 8, the upstream end position side of the first moving body 20 and the second moving body 22 (in FIG. 19, the first moving body 20 has a right end, and the second moving body 22 has a left side. At the end), a bell crank device 412 is provided as a carry-in side engagement means. The bell crank device 412 is pivotally supported at the upstream end of the first moving body 20 by a rotating shaft in a direction perpendicular to the conveying direction, and bent upward at the tip of one arm protruding rearward (upstream). An engaging collar is formed. The tip of the other arm protruding downward is linked to the piston portion of the air cylinder device 410 so as to be relatively rotatable with each other. In the bell crank device 412, as the piston portion of the air cylinder device 410 advances and retreats, the engagement flange portion moves upward and retreats downward from the engagement position where it engages with the cart side front engagement protrusion 406. It moves forward and backward between the retracted position that is disengaged from the engaged position. Further, on the downstream end position side of the first moving body 20 and the second moving body 22 (in FIG. 19, the left end of the first moving body 20 and the right end of the second moving body 22) are provided as unloading side engaging means. A bell crank device 414 is provided. The bell crank device 414 is pivotally supported at the downstream end of the first moving body 20 by a rotating shaft in a direction perpendicular to the conveying direction, and bent upward at the tip of one arm protruding forward (downstream). An engaging collar is formed. The tip of the other arm projecting downward is linked to the piston portion of the air cylinder device 410 so as to be relatively rotatable. The bell crank device 414 is engaged with the engagement position where the engagement flange portion moves forward and engages with the carriage side rear engagement protrusion 408 by the advance and retreat of the piston portion of the air cylinder device 410. Advances and retracts from the retracted position that deviates from the combined position. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  Next, operation | movement of the trolley | bogie conveyance apparatus 402 comprised as mentioned above is demonstrated below based on figures. In the cart conveyance device 402 of the present embodiment, in the first conveyance path 6, the air cylinder device 410 on the upstream end position side of the first moving body 20 is operated to raise the engagement collar portion of the carry-in bell crank device 412 upward. Advance to the engaged position. As a result, the carrying-side bell crank device 412 of the first moving body 20 is engaged with the carriage-side front engaging projection 406 of the carriage 404 that is carried into the first carrying-in position 17. Simultaneously with these operations, the air cylinder device 410 on the downstream end position side in the first moving body 20 is operated to advance the engagement flange portion of the carry-out side bell crank device 414 to the upper engagement position. As a result, the carry-out side bell crank device 414 of the first moving body 20 is engaged with the carriage-side rear engagement protrusion 408 of the carriage 404 at the downstream end position 10 of the first transport path 6. On the other hand, in the second transport path 8, the engaging collar portion is positioned at the retracted position for both the carry-in side bell crank device 412 and the carry-out side bell crank device 414 of the second moving body 22.

  Next, the motor 28 with an inverter control function is driven, the crank arm (not shown) is rotated in a predetermined direction, the first moving body 20 is moved forward by a certain amount, and the second moving body 22 is moved backward by a certain amount. As a result, the plurality of carriages 404 arranged in the first conveyance path 6 are moved by a certain amount to the downstream side, and the carriage 4 at the downstream end position 10 is conveyed to the first carry-out position 11 to be transferred onto the transfer carriage 40. Placed on. When the second moving body 22 moves backward, both the carry-in bell crank device 412 and the carry-out bell crank device 414 of the second moving body 22 are not engaged with the carriage 404, and only the second moving body 22 is engaged. Moves upstream.

  In the second conveyance path 8, when the carriage 404 carried into the second carry-in position 13 by the second traverser 68 is carried to the upstream end position 12, the engagement of the carry-in side bell crank device 412 of the second moving body 22. The mating portion is engaged with the trolley side front engaging projection 406, and the engaging ridge portion of the carry-out side bell crank device 414 is engaged with the trolley side rear engaging projection 408. The plurality of trolleys 404 are brought into a state in which the second moving body 22 sandwiches them together. Then, by moving the second moving body 22 forward by a certain amount, the arranged group of carts 404 can be safely transported without colliding with each other. At the same time, the first moving body 20 is moved backward. When the first moving body 20 moves backward, both the carry-in bell crank device 412 and the carry-out bell crank device 414 of the first moving body 20 are not engaged with the carriage 404, and only the first moving body 20 is engaged. Moves upstream. Since other operations are the same as those of the cart transport apparatus 2 of the first embodiment, the description thereof is omitted.

  As in the present embodiment, the carry-in side engagement means and the carry-out side engagement means are not the carry-in side engagement protrusions and the carry-out side engagement protrusions fixed to the moving body, and the A bell crank device 412 that advances and retreats to and from the cart 404 may be used.

  Next, a fifth embodiment in which the cart conveyance device according to the present invention is implemented in a cart conveyance device that conveys a cast frame and a mold in a casting line will be described with reference to the drawings. In the cart transport apparatus 502 according to the present embodiment, a cart-side front engaging projection 506 and a cart-side rear engaging projection 508 are provided on the front and rear side surfaces of the cart 504 so as to protrude sideways. In addition, the movable body 510 is integrally provided between the first transport path 6 and the second transport path 8, and the second carry-in path 17 side in the first transport path 6 of the mobile body 510 and the second transport path 8. On the side of the unloading position 15 side (the right end in FIG. 21), a first loading-side bell crank device 512 corresponding to the first conveying path 6 side and a second unloading-side bell crank corresponding to the second conveying path 8 side. A device 514 is provided.

The first carry-in side bell crank device 512 is arranged in a direction perpendicular to the conveyance direction at a bearing portion protruding from the upper surface of the upstream end of the first conveyance path 6 of the moving body 510 so as to face the first conveyance path 6. An engagement flange that is bent upward is formed at the tip of one arm that is pivotally supported by the rotation shaft and protrudes forward (downstream). The tip of the other arm protruding downward is linked to the piston portion of the air cylinder device 520 so as to be relatively rotatable with each other. The bell crank device 512 has an engagement position at which the engagement flange moves forward and engages with the carriage-side front engagement protrusion 506 in the first conveyance path 6 by the advance and retreat of the piston portion of the air cylinder device 520. And retreats downward and moves back and forth between the retracted position where it disengages from the engagement position. The second carry-out side bell crank 514 rotates in a direction perpendicular to the conveyance direction at a bearing portion that is provided on the upper surface of the downstream end of the second conveyance path 8 of the movable body 510 so as to face the second conveyance path 8 side. It is supported by a shaft. The structure is substantially the same as that of the bell crank device 512, and its engaging flange engages with the carriage-side rear engagement protrusion 508 of the carriage 504 located at the downstream end position 14 in the second conveyance path 8. To do.

Further, on the side of the second transportable inlet position 13 side of the first carry-out position 11 side and the second conveying path 8 in the first transport path 6 of the mobile 510 (left end in FIG. 21) is the first conveying path A corresponding first carry-out bell crank device 516 and a second carry-in bell crank device 518 corresponding to the second conveyance path side are provided. The structure of these bell crank devices 516 and 518 is substantially the same as that of the first carry-in side bell crank device 512, and the engaging flange of the first carry-out side bell crank device 516 is located at the downstream end position in the first conveyance path 6. 10 is engaged with a carriage-side rear engagement protrusion 508 of the carriage 504 located at the position 10. The engagement collar portion of the second carry-in side bell crank device 518 engages with the carriage-side front engagement protrusion 506 of the carriage 504 located at the second carry-in position 13 in the second transport path 8 . The first carry-in side bell crank device 512 and the second carry-in side bell crank device 518 constitute carry-in side engagement means, and the first carry-out side bell crank device 516 and the second carry-out side bell crank device 514 engage in the carry-out side. Configure the means. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  Next, operation | movement of the trolley | bogie conveyance apparatus 502 comprised as mentioned above is demonstrated below based on figures. In the cart conveyance device 502 of the present embodiment, a single movable body 510 is reciprocated by a certain amount to convey the cart 504 arranged in the first conveyance path 6 and the cart 504 arranged in the second conveyance path 8. To do. In the 1st conveyance path 6, the 1st carrying-in side bell crank apparatus 512 is advanced to an engagement position by operating the air cylinder apparatus 520 by the side of the upstream end in the mobile body 510. FIG. Accordingly, the first carry-in side bell crank device 512 is engaged with the carriage-side front engaging projection 506 of the carriage 504 carried into the first carry-in position 17. In parallel with these operations, the air cylinder device 520 on the downstream end position side of the moving body 510 is operated to advance the first carry-out side bell crank device 516 to the engagement position. As a result, the first carry-out side bell crank device 516 is engaged with the carriage-side rear engagement protrusion 508 of the carriage 504 at the downstream end position 10 of the first transport path 6. On the other hand, both of the second carry-in side bell crank device 518 and the second carry-out side bell crank device 514 corresponding to the second transport path 8 side are positioned at the retracted position.

  Next, the motor 28 with an inverter control function is driven, and the crank arm (not shown) moves the movable body 510 in the conveying direction (left side in FIG. 21) by a certain amount. In this case, the moving body 510 moves forward in the first transport path 6 and moves backward in the second transport path 8. As a result, the plurality of carriages 504 arranged in the first conveyance path 6 are moved by a certain amount to the downstream side, and the carriage 504 at the downstream end position 10 is conveyed to the first carry-out position 11 to be transferred onto the transfer carriage 40. Placed on. In the second transport path 8, when the moving body 510 moves backward, only the moving body 510 moves upstream without engaging the carriage 504 and moving the carriage 504. Since other operations are the same as those in the first embodiment, the description thereof is omitted.

  Note that, as in the present embodiment, a single movable body driven by a single drive device may be engaged with a carriage arranged in a plurality of conveyance paths corresponding to the movable body and conveyed. The moving body corresponding to the transport path need not be provided for each transport path. As a result, the number of moving bodies corresponding to the conveyance path can be reduced, so that the equipment cost can be reduced.

  Further, the carry-in side engagement means and the carry-out side engagement means provided on the movable body are made into a carry-in side engagement protrusion and a carry-out side engagement protrusion that are fixed to the movable body by shifting the engagement position with respect to the carriage. The invention is not limited to a bell crank device that is operated by a cylinder. For example, a known technique such as one in which an engaging claw slides and protrudes by a cam mechanism in a direction perpendicular to the conveying direction can be used.

  Thus, the specific configuration described in the above-described embodiment is merely an example of the present invention, and the present invention is not limited to such a specific configuration. Various embodiments can be adopted without departing from the scope.

  The cart conveyance device according to the present invention is used in a cart conveyance line provided with plural rows of cart conveyance paths that are conveyed in opposite directions.

  DESCRIPTION OF SYMBOLS 2 ... Carriage transfer apparatus, 4 ... Carriage, 6 ... 1st conveyance path, 8 ... 2nd conveyance path, 10 ... Downstream end position, 11 ... Unloading position (1st unloading position), 12 ... Upstream end position, 13 ... Loading Position (second carry-in position), 14 ... downstream end position, 15 ... carry-out position (second carry-out position), 16 ... upstream end position, 17 ... carry-in position (first carry-in position), 18 ... traverser, 20 ... moving body (First moving body), 20a ... loading position side moving section, 20b ... unloading position side moving section, 22 ... moving body (second moving body), 24 ... crank arm / drive device (first crank arm), 26 ... Crank arm / drive device (second crank arm), 27 ... motion conversion device (slider crank mechanism), 28 ... drive device / inverter control motor / drive control means (motor with inverter control function), 55 ... traverser (first traverser) ), 57 ... with Means 59: Unloading position side stop position 61 ... Temporary stop position 68 ... Traverser (second traverser) 78: Loading side engaging means (loading side engaging projection) 80 ... Unloading side engaging means (unloading side) Engaging projection), 84... Carrying-side engaging means (carrying-side engaging projection), 86... Carrying-out side engaging means (carrying-side engaging projection), 104. Engagement projection, 202 ... cart transport device, 204 ... second transport path (first second transport path), 205 ... moving body (first second mobile body), 206 ... second transport path (second transport path) (Second transport path), 207 ... moving body (second second moving body), 208 ... upstream end position, 210 ... carry-in position (first second carry-in position), 212 ... upstream end position, 214 ... carry-in position (Second second carry-in position), 216 ... traverser (second traverser), 218 ... downstream end position 220 ... Unloading position (first second unloading position), 222 ... Downstream end position, 224 ... Unloading position (second second unloading position), 226 ... Traverser (first traverser), 302 ... Cart carrier device, 304 ... 1st conveyance path (1st 1st conveyance path), 306 ... 1st conveyance path (2nd 1st conveyance path), 308 ... 2nd conveyance path (1st 2nd conveyance path), 310 ... Second transport path (second second transport path), 402 ... bogie transport device, 404 ... bogie, 406 ... bogie side front engaging protrusion, 408 ... bogie side rear engaging protrusion, 502 ... bogie transport device, 504 ... trolley, 506 ... trolley side front engaging protrusion, 508 ... trolley side rear engaging protrusion, 510 ... moving body.

Claims (4)

A plurality of carriages on which a cast frame or a mold is placed are continuously arranged between the upstream end position and the downstream end position and are conveyed in a predetermined direction; and
A plurality of carriages that are provided in parallel with the first conveyance path and on which a cast frame or a mold is placed are continuously arranged between the upstream end position and the downstream end position, and are conveyed in the direction opposite to the predetermined direction. Two transport paths;
Between the first carry-out position aligned with the downstream end position of the first transport path, the second carry-in position aligned with the upstream end position of the second transport path in parallel with the first carry-out position, and the second The carriage is reciprocated between a second carry-out position aligned with the downstream end position of the transport path and a first carry-in position aligned with the second transport position and aligned with the upstream end position of the first transport path. A traverser that respectively conveys the unloading position from the unloading position in parallel to the loading position,
Constant first moving body a certain amount reciprocating first along the first conveying path provided corresponding to the transport path, and along the second conveying path is provided corresponding to the second transport path A second moving body that reciprocates by an amount;
A motion conversion device that is provided corresponding to each of the first transport path and the second transport path and converts a rotational motion into a linear motion;
The motor is rotated by one motor, and the rotation axis is arranged orthogonally to each of the first conveyance path and the second conveyance path, and is connected to each of the motion conversion devices so as to transmit a driving force. One drive shaft is provided, and the motion conversion device converts the rotational motion of the drive shaft into a linear motion in the transport direction of the movable body, thereby allowing the first and second movable bodies to move along the first transport path. One driving device that moves the first and second moving bodies synchronously from the upstream side to the downstream side of the second transport path, and moves the first and second moving bodies synchronously from the upstream side to the downstream side ;
The carry of the first conveying path when said first mobile vignetting set to the upstream end position side of the first conveyance path of the first movable body is advanced to the downstream side from the upstream side of the first conveying path A first carry-in side engagement means that engages with a carriage located at a position and releases the engagement with the carriage when the first moving body moves backward from the downstream side of the first transport path to the upstream side;
The downstream end of the first conveying path when said first eclipse set at a downstream end position side of the first conveyance path of the moving body the first movable body is advanced to the downstream side from the upstream side of the first conveying path A first unloading-side engagement means that engages with a carriage at a position and restricts free movement of the plurality of carriages in the downstream direction;
The loading of the second transport path when the second mobile body moves forward from the upstream side of the second transport path to the downstream side, provided on the upstream end position side of the second transport path of the second mobile body. A second carry-in side engagement means that engages with a carriage located at a position and releases the engagement with the carriage when the second moving body moves backward from the downstream side of the second transport path to the upstream side;
The downstream end position of the second transport path, which is provided on the downstream end position side of the second transport path of the second mobile body and moves forward from the upstream side to the downstream side of the second transport path. A second unloading-side engagement means that engages with the carriage at the bottom and restricts free movement of the plurality of carriages in the downstream direction;
A cart conveying device comprising: 2. The carriage according to claim 1, wherein the carriage has a carriage-side front engagement protrusion provided at a front portion in the conveyance direction of the carriage and a carriage-side front engagement protrusion at a rear portion in the conveyance direction of the carriage. A carriage side rear engagement protrusion provided at a position shifted to one of the directions orthogonal to the transport direction;
The movable body is opposed to a carry-in position-side moving unit that moves oppositely between a carry-in position and an upstream end position of each conveyance path, and between a carry-out position and a downstream end position of each carry path. A moving-out position side moving section that moves,
The carry-in side engaging means engages by bringing in contact with the carriage-side front engaging protrusion of the carriage, which is provided at the carry-in position side moving part of the movable body and is positioned at the carry-in position, from the upstream side. Side engaging projections,
The unloading-side engaging means is provided at a position shifted to one of the directions orthogonal to the conveying direction with respect to the loading-side engaging protrusion in the unloading position-side moving portion of the movable body, and is positioned at the downstream end position. A carriage conveying device characterized in that it has a carry-out side engagement protrusion that engages with the carriage-side rear engagement protrusion of the carriage that comes into contact with it from the downstream side. In Claim 1 or 2, the motor is an inverter control motor that rotationally drives the drive shaft ,
The motion conversion device includes a crank arm that is provided at the base end portion of the drive shaft so as not to rotate relative to the drive shaft, and rotates around the drive shaft .
A link member connected to the tip end of the crank arm at the other end so as to be relatively rotatable, and connected to the movable body reciprocally moving in the transport direction so as to be relatively rotatable at one end.
A cart conveying device comprising: In any one of Claims 1 thru | or 3,
The distance between the carry-in side engagement means and the carry-out side engagement means is determined by the carry-out side engagement means from the engaged position of the carriage located at the carry-in position where the carry-in side engagement means engages. It is set longer than the distance to the engaged position of the carriage located at the downstream end position to match the gap of a predetermined length,
The driving device, along with the carriage positioned at the downstream end position and the carriage following the carriage, moves the movable body out of the conveyance path while advancing from the upstream side to the downstream side of the corresponding conveyance path. Stop the succeeding carriage at the downstream end position by stopping at the temporary stop position before the stop position on the unloading position side of the moving body corresponding to the position, and then move the moving body to the stop position on the unloading position side Drive control means for
The unloading position includes an urging means for separating the carriage unloaded from the downstream end position by the moving body from the subsequent carriage located at the downstream end position when the moving body moves to the temporary stop position. A cart conveying device characterized by being provided.

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