JP7120884B2 - Holding units, lifting devices and conveying devices - Google Patents

Description

TECHNICAL FIELD The present invention relates to a holding unit, a lifting device, and a conveying device, and more particularly to a device that holds an object to be conveyed without using electric power.

2. Description of the Related Art Conventionally, there has been known a conveying apparatus for conveying an object such as a polyethylene using two power sources, electricity and air (pneumatic pressure). In such a conveying apparatus, a pneumatic cylinder is actuated in response to an electric signal from a detector such as a limit switch to convey an object to be conveyed. Here, for example, Japanese Patent Application Laid-Open No. 2002-300003 is listed as a document related to the conventional technology.

JP 2017-149546 A

By the way, the conventional conveying apparatus requires two power sources, and in addition to the pneumatic cylinders, sensors such as limit switches, and a sequencer for controlling the operation of the pneumatic cylinders in accordance with electrical signals from the sensors. of control equipment is required. As a result, there is a problem that the configuration becomes complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a holding unit, a lifting device, and a conveying device that operate without using electric power and have a simple configuration.

The present invention comprises a pair of holders that sandwich and hold an object to be conveyed, and holder guides that support the pair of holders so that each of the pair of holders can move freely in the horizontal direction. , a conveyed object detecting member vertically movable with respect to the holder guide member, a first weight for balancing the conveyed object detecting member, One of the holding bodies is fixed, one end in the longitudinal direction is connected to the transferred object detecting body, and the other end in the longitudinal direction is connected to the first weight. and the other holding body of the pair of holding bodies is fixed to an intermediate portion in the longitudinal direction, and one end in the longitudinal direction is connected to the transported object detection body, and a second rope-like member for a holder, the other longitudinal end of which is connected to the first weight.

ADVANTAGE OF THE INVENTION According to this invention, it is effective in the ability to provide the holding|maintenance unit, lifting apparatus, and conveyance apparatus which operate|move without using electric power, and are simple in a structure.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows schematic structure of the conveying apparatus which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows schematic structure of the conveying apparatus which concerns on embodiment of this invention. (a) is a view in the direction of arrow III in FIG. 2, and (b) and (c) are views corresponding to (a) and showing the operation of the transferred object mounting body. It is a figure which shows the outline|summary of the lifting apparatus of the conveying apparatus which concerns on embodiment of this invention. Figure 5 shows the operation of the lifting device shown in Figure 4; Figure 5 shows the operation of the lifting device shown in Figure 4; Figure 5 shows the operation of the lifting device shown in Figure 4; Figure 5 shows the operation of the lifting device shown in Figure 4; Figure 5 shows the operation of the lifting device shown in Figure 4; It is a figure which shows the outline|summary of the holding|maintenance unit of the conveying apparatus which concerns on embodiment of this invention. FIG. 11 shows the operation of the holding unit shown in FIG. 10; FIG. 11 shows the operation of the holding unit shown in FIG. 10; FIG. 11 is a view corresponding to FIG. 10 and showing a holding unit and a transported object mounting body of the transporting device according to the embodiment of the present invention; FIG. 14 is a view taken along line XIV-XIV in FIG. 13; FIG. 4 is a diagram showing a holding unit of the conveying device according to the embodiment of the present invention and a movement blocking portion that temporarily prevents a pair of holding bodies of the holding unit from approaching each other; It is a figure which shows the installation aspect of the 3rd weight of the lifting apparatus of the conveying apparatus which concerns on embodiment of this invention.

A conveying device (conveying object conveying device) 1 according to the embodiment of the present invention is configured to operate using only pneumatic pressure (air) as a driving source without using electric power as a driving source. As shown in FIGS. 1, 4, 12, 13, and 14, the conveying device 1 lifts a transported object (for example, polyethylene) 3 and moves the lifted transported object 3 horizontally. It is configured to include a lifting device (transferred object lifting device) 5 and a transferred object mounting body (table) 7 .

The lifting device 5 holds and lifts the transferred object 3 using a holding unit (transferred object holding unit; chuck unit) 9 (see FIGS. 4 and 10 for details).

Here, for convenience of explanation, one predetermined horizontal direction is defined as the horizontal direction, and another predetermined horizontal direction that is orthogonal to the horizontal direction is defined as the front-rear direction. The vertical direction is defined as the direction perpendicular to the vertical direction.

As shown in FIGS. 10 and 11, the holding unit 9 includes a pair of holders (transferred object holders; chucks) 11 (11A, 11B), holder guide members 13, and transferred object detectors (transferred object detectors). 15, a first weight 17, a first retainer net-like member 19, and a second retainer net-like member 21. As shown in FIG.

The pair of holders 11 (11A, 11B) are configured to sandwich and hold the transferred object 3, as shown in FIG. 12 and the like.

The holder guide member 13 supports each of the pair of holders 11 (11A, 11B) so that each of the pair of holders 11 (11A, 11B) can move in the horizontal direction (lateral direction). (configured to guide).

That is, one holding body 11A of the pair of holding bodies 11 is horizontally movable with respect to the holding body guide body 13, and the other holding body 11B of the pair of holding bodies 11 is also a holding body. It is horizontally movable with respect to the guide body 13 .

Each of the pair of holders 11 is engaged with and supported by holder guides 13 with a predetermined frictional resistance.

The conveyed object detecting member 15 is vertically movable with respect to the holder guide member 13 . For example, the transported object detection body 15 is engaged with and supported by the holding body guide body 13 with a predetermined frictional resistance. It should be noted that the transported object detection body 15 may be configured to move vertically with respect to the holder guide body 13 in a state in which it is not engaged with the holder guide body 13 .

The first weight 17 is provided to balance (weight balance) with the transported object detector 15 .

One of the pair of holders 11, 11A, is fixed to the intermediate portion in the longitudinal direction of the first holder rope-like member 19, and one end in the longitudinal direction is attached to the conveyed object detection member 15. , and the other end in the longitudinal direction is connected to the first weight 17 .

Tension is applied to the first holder rope member 19 by the weight (mass*weight acceleration) of the transported object detection member 15 and the weight (mass*weight acceleration) of the first weight 17. 1 is in a state of being stretched without loosening. The first retainer rope member 19 includes guide rollers (fixed pulleys) 23 (23A), 25 (25A), and 27 (27A) that are rotatably (rotatably) supported by the retainer guide member 13. Guided by being wrapped around The first retainer rope member 19 moves in the longitudinal direction as the transferred object detector 15 and the first weight 17 move in the vertical direction.

Similarly to the first retainer rope member 19, the second retainer rope member 21 also has the other holder 11B of the pair of holders 11 fixed to the intermediate portion in the longitudinal direction. , one end in the longitudinal direction is connected to the transported object detector 15 , and the other end in the longitudinal direction is connected to the first weight 17 .

Similarly to the first holder rope member 19, tension is also applied to the second holder rope member 21 by the transferred object detector 15 and the first weight 17. 1 is in a state of being stretched without loosening. Similarly to the first retainer rope member 19, the second retainer rope member 21 is also rotatably (rotatably) supported by the holder guide member 13 (first guide roller). It is guided by being wound around rollers 23 (23B), 25 (25B), and 27 (27B) other than the rollers on which the rope member for the holder is wound. The second retainer rope member 21 also moves in this longitudinal direction as the transferred object detector 15 and the first weight 17 move in the vertical direction.

It should be noted that the weight of transferred object detection body 15 and the weight of first weight 17 are equal to each other. Further, at the portion on the conveyed object detection body 15 side, the respective holder rope members 19 and 21 extend in the vertical direction. 21 extends vertically.

10, etc., reference numeral 29 denotes an auxiliary weight, which is detachable from the transported object detection body 15. As shown in FIG. When the weight of the object detection body 15 and the weight of the first weight 17 are different, the weight of the object detection body 15 and the weight of the first weight 17 can be equalized by changing the auxiliary weight 29 to an appropriate weight. weights can be matched with each other.

In the holding unit 9, when no external force other than gravity acts, the weight balance between the object detection body 15 and the first weight 17 is balanced. and the pair of holders 11 are kept stationary with respect to the holder guide member 13 .

It should be noted that although the auxiliary weight 29 has been used for adjustment, even if the weight value of the transported object detector 15 and the weight value of the first weight 17 do not match each other and are slightly different, When no external force other than gravity acts due to the frictional force between the object detecting member 15 and the holder guide member 13, the conveyed object detecting member 15, the first weight 17, and the pair of holders 11 are held together. , the stationary state with respect to the holder guide member 13 is maintained.

Moreover, the holding unit 9 is formed symmetrically with respect to a plane that is perpendicular to the lateral direction (or the front-rear direction) and passes through the center of the holding unit 9 . That is, they are formed symmetrically as shown in FIG. 10 and the like.

In the holding unit 9 , the transported object detector 15 moves upward with respect to the holder guide member 13 and the first weight 17 moves downward, thereby narrowing the distance between the pair of holders 11 . ing.

At this time, the value of the upward movement distance of transferred object detection body 15 with respect to holding body guide body 13 and the value of the downward movement distance of first weight 17 with respect to holding body guide body 13 are different from each other. are equal. Furthermore, the value of the downward movement distance of the first weight 17 and the value of the movement distance of the holding body 11A, one of the pair of holding bodies 11, relative to the holding body guide body 13 are equal to each other. The value of the downward movement distance of the first weight 17 and the value of the movement distance of the other holding body 11B of the pair of holding bodies 11 relative to the holding body guide body 13 are equal to each other. there is

Similarly, in the holding unit 9 , the transported object detector 15 moves downward relative to the holder guide member 13 and the first weight 17 moves upward, thereby increasing the distance between the pair of holders 11 . It is spreading.

The positions of the pair of holders 11 (11A, 11B) in the vertical direction match each other. In addition, the lower ends of the pair of holders 11 are located below the transferred object detector 15 in the vertical direction.

A pair of holders 11 (11A, 11B) are spaced apart, conveyed object detector 15 is positioned at the lower end, and holding unit 9 is positioned above (directly above) conveyed object 3. When the holder guide member 13 is lowered with respect to the transferred object 3 from the state in which the holder unit 9 is held, the holder unit 9 behaves as follows.

First, the transported object detector 15 abuts on the upper end of the transported object 3 (see FIG. 11). When holding body guide body 13 is further lowered in this contact state, holding body guide body 13 is lowered while transported object detection body 15 is stopped with respect to transported object 3. The detection body 15 moves upward with respect to the holder guide body 13 , and the first weight 17 moves downward with respect to the holder guide body 13 . As a result, the distance between the pair of holders 11 (11A, 11B) is narrowed so that the conveyed object 3 is sandwiched and held by the pair of holders 11 (see FIG. 12).

Further, when the holder guide member 13 moves upward in a state in which the conveyed object 3 is sandwiched between the pair of holders 11 (11A and 11B), the pair of holders 11 (11A and 11B) move upward. (11A, 11B), the position of the transported object detector 15, and the position of the first weight 17 do not change, and the transported object 3 is held between the pair of holders 11 (11A, 11B). While maintaining the state, the held object 3 is lifted together with the holding unit 9 (the object 3 is configured to be lifted).

In the above description, the first weight 17 is suspended only by the holder rope members 19 and 21 and supported by the pair of holders 11 and the like. Similarly to the third weight 39 (see FIG. 16), the weight 17 may be engaged with the holder guide member 13 with a predetermined frictional resistance and supported so as to be vertically movable. . A detailed description of FIG. 16 will be given later.

Also, one end portion of the first retainer rope member 19 and one end portion of the second retainer rope member 21 are bundled together and connected to the conveyed object detector 15 . Alternatively, the other end of the first retainer rope member 19 and the other end of the second retainer rope member 21 may be bundled together to form the first holder. It may be connected to the weight 17 .

As shown in FIG. 4 and the like, the lifting device 5 includes a frame 31, a pneumatic cylinder (first pneumatic cylinder) 33, a guide body rope member 35, a second weight 37, a stopper (not shown), and a third and a weight 39.

The frame 31 is installed on the floor surface 41 on the floor surface 41, for example. The holding unit 9 is supported by the frame 31 .

The pneumatic cylinder 33 is provided to vertically move the holder guide 13 (holding unit 9).

A fixed body (for example, a cylinder body) 43 of the pneumatic cylinder 33 is provided integrally with the frame 31 , and a moving body (driving body; for example, a piston rod) 45 of the pneumatic cylinder 33 is moved by air pressure supplied to the pneumatic cylinder 33 . , and move vertically with respect to the cylinder body 43 and the frame 31 . As a matter of course, the stroke of the pneumatic cylinder 33 (piston rod 45) (the value of the moving distance in the vertical direction) is constant.

In addition, the piston rod 45 may be provided integrally with the frame 31 , and the cylinder body 43 may be configured to move vertically with respect to the frame 31 .

One longitudinal end of the guide body rope member 35 is connected to the holder guide body 13 , and a first longitudinal middle part 47 is supported by the piston rod 45 of the pneumatic cylinder 33 . , the holder guide member 13 (holding unit 9) is suspended.

The second weight 37 is provided in the second intermediate portion 49 and generates tension on the guide body net-like member 35 by its own weight so that the guide body net-like member 35 does not become loose. I am letting The second intermediate portion 49 is positioned between one longitudinal end portion of the guide-body rope-like member 35 and the first longitudinal intermediate portion 47 of the guide-body rope-like member 35 .

A stopper (not shown) abuts on the second weight 37 to prevent the second weight 37 from moving above the rising end when the second weight 37 is positioned at the rising end in the vertical direction. It's like The third weight 39 is connected to the other longitudinal end of the guide member rope member 35 .

The lifting device 5 will be explained in more detail.

The guide body rope member 35 is wound around guide rollers 51, 53, 55, 57, 59, and 61, as shown in FIGS. The guide rollers 51 , 53 , 57 , 61 are fixed pulleys and are rotatably provided on the frame 31 . Guide rollers 55 and 59 are movable pulleys.

A second weight 37 is suspended from the movable pulley 55 , and the movable pulley 59 is rotatably (rotatably) supported by the piston rod 45 at the upper end of the piston rod 45 of the pneumatic cylinder 33 . It is designed to move up and down according to the vertical movement of 45 .

The guide body rope member 35 is arranged in the order of guide roller 51 , guide roller 53 , guide roller 55 , guide roller 57 , guide roller 59 , guide roller 61 from the holding unit 9 toward the third weight 39 . is wrapped around.

A pair of holders 11 of the holding unit 9 is configured to hold a plurality of vertically stacked objects 3 one by one, for example, in order from the topmost object (see FIG. 1). 2).

A plurality of transported objects 3 are stacked in the vertical direction, and when the transported objects 3 are held and lifted and transported in order from the one on which the pair of holders 11 exists, the height of the remaining transported objects 3 is becomes progressively lower.

The second weight 37 is moved to the frame by the pneumatic cylinder 33 according to the change in height position when the pair of holders 11 (holding units 9) hold the plurality of vertically stacked objects 3 to be conveyed. By moving up and down with respect to 31, tension is always generated in the guide body rope member 35 regardless of the position of the piston rod 45 of the pneumatic cylinder 33 and the positions of the pair of holders 11. .

The third weight 39 moves the piston rod 45 of the pneumatic cylinder 33 downward in order to raise the pair of holders 11 (holding unit 9), and the second weight 37 is positioned at the upper end. and is configured to ascend when the pair of holders 11 (holding unit 9) is prevented from ascending (see FIG. 9).

More specifically, in the initial state, the piston rod 45 of the pneumatic cylinder 33 is positioned at the lower end, the holding unit 9 is positioned at the upper end, the second weight 37 is positioned at the upper end, and the guide It is assumed that tension is generated in the body rope member 35 and that a plurality of transferred objects 3 are stacked and placed under the pair of holders 11 .

In the initial state, when the piston rod 45 of the pneumatic cylinder 33 starts to rise, the holding unit 9 descends while the second weight 37 remains almost stationary.

When the piston rod 45 of the pneumatic cylinder 33 moves further upward, the holding unit 9 further descends and contacts the uppermost transferred object 3 among the plurality of stacked objects 3 to hold it. The unit 9 is prevented from moving downward, and the uppermost transported object 3 is held by the pair of holders 11 as described above.

The piston rod 45 of the pneumatic cylinder 33 may be stopped while the conveyed object 3 is held by the pair of holders 11, but in the pneumatic cylinder 33, the piston rod 45 moves upward to the full stroke. Therefore, in this state, slackness will occur in the guide member rope member 35 .

Therefore, by moving the second weight 37 downward instead of the holding unit 9, it is configured to prevent the slackness of the guide body rope member 35 from occurring.

As the number of stacked objects 3 decreases, the height at which holding unit 9 abuts against objects 3 naturally decreases. The amount of downward movement of second weight 37 after conveyed object 3 is held by pair of holders 11 is designed to decrease as the height at which holding unit 9 contacts conveyed object 3 becomes lower. It is configured.

When lifting the transported object 3 held by the holding unit 9, the piston rod 45 of the pneumatic cylinder 33 moves to the lower end.

Due to the downward movement of the piston rod 45 of the pneumatic cylinder 33, first, only the second weight 37 rises to the rising end, and then the holding unit 9 and the transferred object 3 rise to the rising end. In a state in which the second weight 37 has finished moving to the upper end and the holding unit 9 and the transferred object 3 have finished moving to the upper end, the piston rod 45 of the pneumatic cylinder 33 is positioned at the lower end. It is configured so that lifting of the transported object 3 is completed.

By the way, even if the descent of the holding unit 9 is stopped before it reaches the transferred object 3 (see FIG. 8), the second weight 37 will move instead of the holding unit 9. By moving downward, it is configured to prevent the occurrence of slack in the guide body rope member 35 .

Further, the third weight 39 does not move and is placed on the floor surface 41 on which the conveying device 1 is installed when the holding unit 9 is moving up and down normally in a normal state.

However, if this ascent is blocked while the holding unit 9 is being raised, the third weight 39 is raised after the second weight 37 is raised (after the second weight 37 is positioned at the raised end). (See FIG. 9).

In order for the holding unit 9, the second weight 37, and the third weight 39 to behave as described above, the weight of the object to be conveyed 3 and the holding unit must be equal to each other, ignoring the weight of the guide member rope member 35 and the like. 9, the weight of the second weight 37, and the weight of the third weight 39, the sum of the weight of the transferred object 3 and the weight of the holding unit 9 is the weight of the second weight 37. , and the weight of the third weight 39 is larger than the sum of the weight of the transferred object 3 and the weight of the holding unit 9 . The reason why the second weight 37 is "half the weight of the second weight 37" is that the second weight 37 is supported by the movable pulley 55 on the guide rope member 35. As shown in FIG.

In the above description, the third weight 39 is supported only by the guide rope member 35. However, as shown in FIG. A configuration in which they are engaged and supported so as to be movable in the vertical direction may be employed.

That is, the third weight 39 is supported by the frame 31 via the third weight support member 52 so as to be movable only in the vertical direction, and is suspended by the guide rope member 35. It may be a configuration. 16(a), the third weight 39 is in contact with the floor surface 41, and in FIG. 16(b), the third weight 39 rises and is separated from the floor surface 41. As shown in FIG.

As shown in FIGS. 1 and 2, the object mounting body 7 of the conveying device 1 is provided on a frame 31 so as to be movable in the front-rear direction. 13 and 14, when the object 3 is lifted by the lifting device 5 and the object 3 is positioned at the upper end, the object mounting body 7 is positioned in the horizontal direction. It is configured to move to one end (rear end) and enter the lower side of the object to be conveyed 3 .

When the transported object 3 enters the lower side, it engages with the pair of holders 11 to release the transported object 3 from the pair of holders 11, place the transported object 3 thereon, and place the transported object 3 thereon. It is configured to move to the other end (front end) in the horizontal direction together with the placed transferred object 3 .

When the transferred object mounting body 7 has moved to the other end (front end) in the horizontal direction, as shown in FIG. In order to facilitate takeout (takeout by a person's bare hands), the transferred object mounting body 7 is configured to be inclined.

More specifically, most of the frame 31 and the lifting device 5 are rod-shaped aluminum frames of a predetermined length having a constant cross-sectional shape (the cross-sectional shape of a plane perpendicular to the longitudinal direction). (commercially available aluminum frame) and parts such as brackets, sliders, and sliders for this aluminum frame.

The transported object mounting body 7 is formed in a substantially rectangular flat plate shape, and as shown in FIG. 54, by means of a second pneumatic cylinder 56 (see FIG. 1). Since the stroke of the pneumatic cylinder 56 is constant like that of the first pneumatic cylinder 33, the transported object mounting body 7 can be stopped only at either the rear end position or the front end position. It has become.

Further, as shown in FIG. 3, the transported object mounting body support 54 is pivoted about a shaft C1 extending in the front-rear direction on the rear side in the horizontal direction, and is rotated by a third pneumatic cylinder 58 (see FIG. 1). , so that it rotates by a predetermined angle of about 30° (see FIGS. 3(b) and 3(c)).

That is, the transported object mounting body support 54 is in a standard posture as shown in FIG. The upper surface of 7 takes an inclined posture (see FIGS. 3(b) and 3(c)) in which the front side in the horizontal direction is positioned downward.

Since the upper surface of the transferred object mounting body 7 is inclined, as shown in FIG. It is designed to slip down (slide down). The transported object 3 that has slipped down comes into contact with, for example, a stopper 60 formed by a part of the frame 31 and stops. A person carries out the stopped transported object 3 from the front side in the lateral direction with bare hands.

As shown in FIG. 13 and the like, the holding member 11A includes a holding member guide member engaging portion 62, a claw portion 63, a guide roller support member 65, and a roller 67. As shown in FIG.

The holding body guide body engagement portion 62 is engaged with the holding body guide body 13 . The claw portion 63 engages (is in direct contact with) the transferred object 3 and is provided integrally with the holding body guide body engaging portion 62 below the holding body guide body engaging portion 62 .

The guide roller support 65 is provided integrally with the claw portion 63 . A cylindrical roller 67 is rotatably (rotated) provided on the guide roller support 65 at the lower end of the guide roller support 65 . A rotation center axis C2 of the roller 67 extends vertically.

The holding member 11B also includes holding member guide member engaging portions 62, claw portions 63, guide roller support members 65, and rollers 67, similarly to the holding member 11A.

When the transferred object mounting body 7 is viewed from above, as shown in FIG. and the tip side portion 71, an inclined portion 73 is provided.

In a state where the holding unit 9 that suspends the object 3 is positioned at the upper end, when the object mounting body 7 moves from the front end position to the rear end position, the pair of rollers 67 move the object. It abuts on both lateral ends of the mounting body 7 .

As shown in FIG. 13, when the pair of rollers 67 are in contact with the rear end portion 69 of the object mounting body 7, as shown in FIG. 14, the pair of rollers 67 are brought into contact with the inclined portion 73, and the pair of rollers 67 are held. The interval (horizontal interval) between the holders 11 (11A, 11B) is gradually widened.

Then, when the transferred object mounting body 7 moves further to the rear side, the pair of rollers 67 come into contact with the tip side portion 71, and the gap (the gap in the lateral direction) between the pair of holding bodies 11 (11A, 11B) becomes It becomes a further spread state, the holding of the conveyed object 3 by the pair of holders 11 is released, and the conveyed object 3 drops a small distance and is placed on the conveyed object mounting member 7 . It's becoming

Here, the movement blocking portion 75 will be described with reference to FIG. 15 . The movement blocking part 75 moves the transported object mounting body 7 to the rear end position in a state in which the holding unit 9 suspending the transported object 3 is positioned at the upper end, thereby moving the pair of holding bodies 11 (11A). , 11B) is further widened and the holding of the conveyed object 3 by the pair of holders 11 is released (state in which the gap between the pair of holders 11 (11A, 11B) is widened). It is

The movement blocking portion 75 includes a pair of blocking bodies 77 (77A, 77B) and a pair of blocking body guide bodies 79 (79A, 79B).

The blocking body guide body 79A is provided integrally with the frame 31 above the holding body guide body engaging portion 62 of the holding body 11A of the holding unit 9 . The blocking body 77A is supported by the blocking body guide body 79A so as to be vertically movable by a predetermined distance. The length of the In the state shown in FIG. 15(a), the blocking body 77A is positioned at the raised end, and in the state shown in FIG. 15(b), the blocking body 77A is positioned at the lowered end.

Like the blocking body 77A, the blocking body 77B is also supported by the frame 31 via the blocking body guide body 79B.

FIG. 15(a) shows a state in which the holding unit 9 holding the transferred object 3 has risen to the upper end. The blocking body 77B abuts against the guide body engaging portion 62 of the holding body 11B of the holding unit 9 and is pushed up.

FIG. 15(b) shows a state in which the distance between the pair of holders 11 (11A, 11B) is widened from the state shown in FIG. 15(a) and the object 3 is released from being held. In this state, the blocking body 77A is dropped by its own weight and is in contact with the holding body guide body 13 and the holding body guide body engaging portion 62 of the holding body 11A of the holding unit 9, and the blocking body 77B is pulled by itself. and comes into contact with the holder guide body 13 and the holder guide body engaging portion 62 of the holder 11B of the holding unit 9 . As a result, the state in which the gap between the pair of holders 11 (11A and 11B) is widened is maintained.

As shown in FIGS. 1, 2, etc., the rear end portion of the transport device 1 is provided with a transported object loading section 81 into which a plurality of stacked transported objects 3 are transported. The plurality of transferred objects 3 carried into the transferred object carrying-in portion 81 rolls on the plurality of rollers 83 and reaches the transferred object lifting portion 85 provided below (right below) the holding unit 9. , for example, to move manually.

The conveying device 1 also includes a first sensor (conveyed object pickup detection sensor) 87 , a second sensor (chuck unit ascending end detecting sensor) 89 , and a third sensor (table advancing end detecting sensor) 91 . , a fourth sensor (table backward end detection sensor) 93, a fifth sensor (chuck close detection sensor) 95, a sixth sensor (chuck open detection sensor) 97, and a seventh sensor (table top A conveyed object detection sensor) 99, an eighth sensor (table lift position detection sensor) 101, and a control section 103 are provided.

As described above, the conveying device 1 uses only compressed air as a drive source. directional control valves, lever type directional control valves, etc.), and the control unit 103 is configured using a plurality of air operated valves (pilot type directional valves that change the air flow path by air pressure, etc.). there is

The conveying device 1 operates the cylinders 33, 56, 58 under the control of the control unit 103 according to the detection results of the first to eighth sensors 87, 89, 91, 93, 95, 97, 99, 101. It operates by driving appropriately.

Here, the operation of the conveying device 1 will be described.

As an initial state, the transported object mounting body 7 is positioned at the forward end (separate from the holding unit 9) with its upper surface extending in the horizontal direction, and does not hold the transported object 3. It is assumed that the holding unit 9 is positioned at the upper end, and a plurality of stacked objects 3 are installed under the holding unit 9 .

In the above-described initial state, the holding unit 9 descends to hold one transported object 3 , and while maintaining this held state, the holding unit 9 rises to the upper end and lifts the one transported object 3 .

Subsequently, the transferred object mounting body 7 moves rearward to the rearward end (below the transferred object 3 held by the holding unit 9). Then, the transferred object mounting body 7 opens the pair of holders 11 to release the holding of the transferred object 3 by the holding unit 9, and places the transferred object 3 thereon.

Subsequently, the transferred object mounting body 7 on which the transferred object 3 is mounted moves forward to the forward end.

Subsequently, when the posture of the transferred object mounting body 7 on which the transferred object 3 is placed is tilted as shown in FIG. 60.

In this state, a person carries out the transported object 3, and when the transported object mounting body 7 is carried out, the posture of the transported object mounting body 7 returns to its original posture (returns to the posture in which the upper surface is expanded in the horizontal direction). The next one to-be-conveyed object 3 is conveyed.

According to the conveying apparatus 1, when the holder guide member 13 descends with respect to the transferred object 3, the transferred object detection member 15 comes into contact with the upper end of the transferred object 3, and in this state, the holder guide member 13 further moves. When descending, the transferred object detector 15 moves upward with respect to the holder guide member 13, the first weight 17 moves downward with respect to the holder guide member 13, the gap between the pair of holders 11 narrows, Since the pair of holders 11 sandwich and hold the transferred object 3, the transferred object 3 can be held without using electric power.

Further, according to the conveying apparatus 1, the pair of holders 11 are configured to operate with the weight balance between the conveyed object detector 15 and the first weight 17, and sensors such as limit switches and the Since there is no control device such as a sequencer for controlling the operation of the pneumatic cylinder by an electric signal from the sensor, the configuration is simple and the cost is suppressed.

In addition, since the conveying apparatus 1 is designed to operate using only air pressure without using electrical signals, it is possible to obtain a power saving effect, and in the event of a failure, there is no knowledge of control equipment such as a sequencer. It can also be handled and maintenance becomes easier.

Further, according to the conveying apparatus 1, the second weight 37 moves up and down according to the change in the height position when holding the plurality of stacked objects 3 by the pair of holders 11. Since it is constructed so as to generate tension in the guide member rope member 35, the objects 3 can be held by the holding unit 9 even if the height position of the plurality of objects 3 to be held changes. can be held securely.

Further, according to the transport device 1, the third weight 39 is configured to rise when the lifting of the pair of holders 11 (holding unit 9) is blocked due to the application of an abnormal load. Therefore, it is possible to respond to the occurrence of an abnormal situation without using an electric signal, prevent an excessive load from being applied to the holding unit 9, and prevent the holding unit 9 from being damaged.

Further, according to the transport device 1, when the transported object 3 is lifted by the lifting device 5 and positioned at the upper end, the transported object mounting body 7 enters the lower side of the transported object 3, The pair of holders 11 are engaged to release the holding of the conveyed object 3 by the pair of holders 11, the conveyed object 3 is placed, and the conveyed object 3 placed on the other side of the horizontal direction is moved. , the person can receive and carry the stacked objects 3 at a fixed height without bending the waist, and the physical burden on the person can be reduced.

Further, according to the transporting apparatus 1, the upper surface of the transported object mounting body 7 is inclined when the transported object mounting body 7 moves to the other end in the horizontal direction. A person can more easily receive and carry the conveyed object 3 at a constant height, and the physical burden on the person can be further reduced.

By the way, in the conveying device 1, the third weight 39 may be omitted. Then, the other longitudinal end of the guide body rope member 35 may be connected to the upper end of the piston rod 45 of the pneumatic cylinder 33 .

That is, a frame 31 for supporting the holding unit 9, a pneumatic cylinder 33 for vertically moving the holder guide member 13, and one end in the longitudinal direction are connected to the holder guide member 13. Since the other end of the direction is connected to the moving body 45 of the pneumatic cylinder 33, the longitudinal direction of the guide body rope member 35 suspending the holding body guide body 13 and the guide body rope member 35 A second weight that is provided in an intermediate portion located between one end and the other end in the longitudinal direction of the guide-body rope-like member 35 to generate tension in the guide-body rope-like member 35 . 37, and the pair of holders 11 of the holding unit 9 are configured to hold a plurality of vertically stacked objects 3, and the second weight 37 is configured to hold the pair of holders 37. When the body 11 holds a plurality of vertically stacked objects 3, the body 11 moves up and down according to changes in the height position, thereby generating tension in the guide body rope member 35. It is good also as the lifting device 5 which is carried out.

1 Conveying Device 3 Conveyed Object (Polytainer)
5 Lifting Device 7 Transferred Object Mounting Body 9 Holding Unit 11, 11A, 11B Pair of Holders 13 Holder Guide 15 Transferred Object Detector 17 First Weight 19 First Rope Member for Holder 21 Second Retaining body rope member of 2 31 Frame 33 Pneumatic cylinder 35 Guide body rope member 37 Second weight 39 Third weight 45 Pneumatic cylinder moving body (piston rod)
47 first intermediate portion 49 second intermediate portion

Claims (4)

a pair of holders that sandwich and hold an object to be conveyed;
a holder guide supporting the pair of holders so that each of the pair of holders is horizontally movable;
a transported object detection body vertically movable with respect to the holding body guide body;
a first weight for balancing with the transported object detection body;
One of the pair of holders is fixed to a longitudinal intermediate portion, one longitudinal end of which is connected to the transferred object detection body, and the other longitudinal end of which is the first carrier. a first retainer rope member connected to the weight of
The other holding body of the pair of holding bodies is fixed to the intermediate portion in the longitudinal direction, one end in the longitudinal direction is connected to the transported object detection body, and the other end in the longitudinal direction is the first a second retainer rope member connected to the weight of
A holding unit comprising: a frame on which the holding unit of claim 1 is supported;
a pneumatic cylinder for vertically moving the holder guide;
A guide rope having one longitudinal end connected to the holder guide and the other longitudinal end connected to the moving body of the pneumatic cylinder to suspend the holder guide. a member;
The guide rope is provided in an intermediate portion positioned between one end in the longitudinal direction of the rope for guide body and the other end in the longitudinal direction of the rope for guide body. a second weight that tensions the shaped member;
has
The pair of holders of the holding unit are configured to hold a plurality of vertically stacked objects,
The second weight moves up and down in accordance with a change in height position when the pair of holders holds the plurality of vertically stacked objects, thereby increasing the length of the rope for the guide body. A hoisting device, characterized in that it is constructed to generate tension in a shaped member. a frame on which the holding unit of claim 1 is supported;
a pneumatic cylinder for vertically moving the holder guide;
A guide rope having one end in the longitudinal direction connected to the holder guide and having a first longitudinal intermediate portion supported by the moving body of the pneumatic cylinder to suspend the holder guide. a shaped member;
provided at a second intermediate portion positioned between one longitudinal end portion of the guide body rope member and a first longitudinal intermediate portion of the guide body rope member, a second weight that applies tension to the rope member for the guide body;
a stopper that prevents the second weight from moving above the rising end when the second weight is positioned at the rising end;
a third weight to which the other end in the longitudinal direction of the rope member for guide body is connected;
has
The pair of holders of the holding unit are configured to hold a plurality of vertically stacked objects,
The second weight moves up and down in accordance with a change in height position when the pair of holders holds the plurality of vertically stacked objects, thereby increasing the length of the rope for the guide body. is configured to generate tension in the shaped member,
The moving body of the pneumatic cylinder moves to raise the pair of holders, the second weight is located at the rising end, and the pair of holders is positioned at the third weight. A lifting device, characterized in that it is arranged to be raised when the body is prevented from being raised. A lifting device according to claim 2 or claim 3;
When the transported object is lifted by the lifting device and the transported object is positioned at the rising end, the transported object moves to one end in the horizontal direction and enters the lower side of the transported object, and the pair of to release the holding of the transported object by the pair of holding bodies, place the transported object, and hold the transported object together with the transported object at the other end in the horizontal direction. a transported object mounting body that moves to
A conveying device comprising:

Images