JPH0741985B2 - Transfer device for turntable - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used to transfer an object to be transferred on a carry-in device onto a turntable or to transfer an object to be transferred on a turntable onto an unloader. The present invention relates to a transfer device for a turntable.

2. Description of the Related Art Conventionally, as an apparatus of this type, for example, SAIkai Sho 57-1622
There is provided a device for feeding a work onto a movable work table, which is disclosed in Japanese Unexamined Patent Publication No. 22-90. In this conventional type, a turntable is provided in which a set stand of an internal combustion engine is arranged at predetermined intervals in the circumferential direction, and an arc-shaped guide rail is arranged along the outer circumference of the turntable. The carrying-in carriage and the carrying-out carriage, which are supported and guided by the guide rails via wheels, are integrated by a connecting member. Both trolleys are provided with chain conveyors at the top for transferring pallets. Then, at the position where both carriages are returned by the contraction of the cylinder device, the pallet for supporting the internal combustion engine is moved from the carry-in conveyor to the chain conveyor of the carry-in carriage, and the pallet on the chain conveyor of the carry-out carriage is moved to the carry-out conveyor. ing. Next, while engaging the locking tool on the loading carriage side with the engaged portion provided on the turntable side, moving both carriages integrally with the turntable,
The pallet on the chain conveyor of the carry-in vehicle is moved to the set table, and the pallet on the set table is moved to the chain conveyor of the carry-out vehicle.

Problems to be Solved by the Invention According to the above-described conventional type, since both carriages move integrally, these carriages cannot move for the next work until each work on both carriages is completed. As a result, sufficient work time (cycle time) must be ensured, so the entire work cannot be performed efficiently.

Furthermore, according to the conventional type as described above, since the pallets are transferred by the trolleys by the chain conveyor,
Each set base requires a roller conveyor for continuously transferring pallets to the chain conveyor, a lift device for supporting the received pallets in a fixed position, and the structure and control are complicated.

An object of the present invention is to provide a transfer device for a turntable which can flexibly move both carriages for transferring an object to and from the turntable and can simplify the structure and control on the turntable side. It is in the point of providing.

Means for Solving the Problems In order to achieve the above object, a transfer device for a turntable according to the present invention is reciprocally moved outside a turntable on an arcuate movement path along the outer circumference of the turntable. With a flexible loading and unloading trolley,
A transfer device is provided on each of these carriages, an engagement / disengagement device is provided between the turntable and the two carriages, and a device for loading and unloading an object to be transported is provided outside the movement path of the two carriages. . The transfer device is composed of a fork that can be raised and lowered and can be retracted.

Action According to the configuration of the present invention, the object to be conveyed that has been conveyed to the end of the carry-in device is transferred onto the transfer device of the carry-in carriage. Then, while the engagement / disengagement device between the carry-in carriage and the turntable is engaged and both are integrally moved, the transported object on the transfer device of the carry-in carriage is moved to the turntable side. After that, in a state where the engagement / disengagement device is disengaged, the loading carriage is moved back to face the loading device and is stopped. Further, while the engagement / disengagement device between the carry-out carriage and the turntable is engaged and both are integrally moved, the object to be conveyed on the turntable is transferred onto the transfer device of the carry-out carriage. Then, after releasing the engagement / disengagement device and stopping the unloading carriage by facing the unloading device,
The object to be transported on the transfer device of the unloading carriage is moved to the unloading device.
In such a work, both carriages move integrally with the turntable at the same time, and return movements are performed almost at the same time. At that time, since both carriages can move independently, the work of one carriage is completed. Before the end, the other dolly can move on to other work such as return movement.

When the transfer device is composed of a fork, the to-be-conveyed object can be directly passed to the turntable side support portion by the ascending / descending movement and the retracting / retracting movement of the fork.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a pallet carry-in path on which an internal combustion engine is placed, and a carry-in conveyor 2, a supply device 3 with a turntable arranged outside the end of the carry-in conveyor 2, Positioned at an angle with respect to the carry-in conveyor 2,
Moreover, the supply part of the supply device 3 with the turntable is formed by the connectable loading device 4. Denoted at 5 is an unloading path, which is an unloading device 6 which is substantially parallel to the unloading device 4, a discharge device 7 with a turntable arranged outside the terminal end of the unloading device 6, and a position which is inclined with respect to the unloading device 6. And an unloading conveyor 8 parallel to the loading conveyor 2. The carry-in device 4 and the carry-out device 6 are of a chain conveyor type or the like. Reference numeral 10 is a turntable, and a plurality of internal combustion engine test devices 11 are radially provided on the upper surface thereof. The turntable 10 is supported and guided by an annular rail 13 attached to a base frame 12 via a plurality of wheels 14. Between the carry-in device 4 and the carry-out device 6 and the turntable 10, there are provided a carry-in carriage 20 and a carry-out carriage 60 which are reciprocally movable separately on an arc-shaped moving path 15 along the outer circumference of the turntable 10. The carriages 20 and 60 are provided with the transfer devices 21 and 61 on their upper portions. The moving route 15
Is formed by disposing a pair of left and right arc-shaped floor rails 17 on the base frame 16.

2 to 4, the loading carriage 20 is a floor rail 17
Is supported and guided through a plurality of wheels 22 and guide rollers 23, and the traveling thereof is performed by using a traveling drive device 24 mounted on a specific wheel.
It becomes possible by interlocking with 22. The transfer device 21 is arranged on the upper part of the carry-in carriage 20 via a support frame 25, and a pair of front and rear frames 26 mounted on the upper part of the support frame 25 in the left-right direction, and on both left and right ends of these frames 26. The sprocket 27 attached to each, a pair of left and right guide sprockets 28 attached to both support frames 25, and one drive sprocket 29, a chain 30 stretched between each sprocket 27, 28, 29, and front and rear A common drive shaft 31 to which a drive sprocket 29 is attached, a drive device 33 provided on one support frame 25 and a pair of mounts 32, and a winding transmission device that interlocks and connects the drive device 33 and the drive shaft 31. It consists of 34 and. A pushing device 35 in the left-right direction is provided between the chains 30. The push-out device 35 includes a pair of front and rear guide rails 36 mounted in the left-right direction on the inner side facing each other at the upper portion of the support frame 25, and a movable base 38 supported and guided by the guide rails 36 via rollers 37, The first to move this movable table 38
The cylinder device 39 and the movable base 38 are swingably mounted on the movable base 38 via the front-rear direction pins 40, and maintain a posture in which the chain 30 projects upward from the supporting surface 30a of the chain 30 when moving to the turntable 10 side. It is composed of an anti-back type pushing piece 41 and the like. A stopper device 42 is provided at the end of the frame 26 on the turntable 10 side. That is, brackets 43 extending in the front-rear direction from the outer surface of the frame 26 are continuously provided, and each of the brackets 43 has a plurality of guide rollers 44. A stopper rod 45, which is supported and guided by these guide rollers 44 and is movable in the front-rear direction, is provided, and the stopper rod 45 can be retracted and retracted by the second cylinder device 46. A stopper rod 47 is provided at the tip of both stopper rods 45. 48 indicates an anti-back stopper.

An engaging / disengaging device 50 is provided between the carry-in carriage 20 configured as described above and the turntable 10. That is, a supporting member 51 is attached to the turntable 10 side of the loading carriage 20, and the supporting member 51 supports a plurality of side surface guide rollers 52 and a plurality of upper and lower surface guide rollers 53, respectively. The engaged member 54, which is supported and guided by the rollers 52 and 53 and is capable of freely moving back and forth above the turntable 10, is moved back and forth by a third cylinder device 55 provided between the roller 52 and 53 and the support member 51. An engaging member 56 is erected on the upper surface of the turntable 10 and at a predetermined position with respect to the test apparatus 11.

The carry-out carriage 60 shown in FIG. 5 is substantially the same as the carry-in carriage 20, and the same or substantially the same components are designated by the same reference numerals and the detailed description thereof will be omitted. And the difference is that
The stopper device 42 is provided on the unloading device 6 side, and the pulling-out device 62 is provided in place of the pushing-out device 35.
For example, a hooking piece 63 is provided for maintaining the protruding posture when moving to the side away from the turntable 10.

An internal combustion engine 18, which is an example of a transported object, is handled via a pallet 19. The test apparatus 11 has a free roller type receiving conveyor 65 that can be moved up and down, and has a pallet receiver 66 that protrudes above the conveyor surface when the receiving conveyor 65 descends.

Next, the transfer operation in the above embodiment will be described.

The pallet 19 supporting the internal combustion engine 18 is transferred from the carry-in conveyor 2 to the supply device 3 with a turntable, and after being adjusted in direction, it is transferred to the carry-in device 4 and conveyed to the end. The loading carriage 20 is driven by the drive unit 33.
The vehicle travels to the 60 side and is stopped facing the loading device 4. At this time, in the loading carriage 20, the first cylinder device 39 of the pushing device 35 is contracted so that the movable base 38 and the pushing piece 41 are located closest to the loading device 4 side, and the second cylinder device 46 of the stopper device 42 is extended. As a result, the stopper plate 47 is protruding. In this state, the carry-in device 4 and the transfer device 21 for the carry-in cart 20
The pallets 19 are sent out from the carry-in device 4 and are drawn onto the chain 30 of the transfer device 21 by operating and. This retractable pallet 19 advances while pushing down the pushing piece 41,
It comes in contact with the stopper plate 47 and stops. At this time, palette 19
The anti-back stopper 48 prevents the backward movement. Then, with the drive device 33 free,
The third cylinder device 55 of 50 is extended to cause the engaged member 54 to project above the turntable 10. Then, the engaging member 56 that has moved along with the rotation A of the turntable 10 engages with the engaged member 54, and thereafter, the rotational force of the turntable 10 is carried in from the engaging member 56 via the engaged member 54 and the like. Trolley 20
Therefore, the loading carriage 20 moves integrally with the turntable 10 in a state of facing the test apparatus 11 and the moving path 15 together.
Will move up. When such integral movement is started, first, the second cylinder device 46 of the stopper device 42 is contracted, the stopper plate 47 moves backward, and the front of the pallet 19 is opened. Then, the transfer device 21 is driven to send the pallet 19 onto the receiving conveyor 65 of the test device 11. After the pallet 19 to be sent out has completely passed over the pushing piece 41, the first cylinder device 39 of the pushing device 35.
Is extended, and the pushing piece 41 advancing together with the movable table 38 comes into contact with the pallet 19 to further push the pallet 19 and completely transfer it to the receiving conveyor 65. Then, after the push piece 41 is moved backward together with the movable table 38 onto the loading carriage 20, the engaged member 54 is also moved backward and the loading carriage 20 is disengaged from the turntable 10. This made the loading truck free
20 is returned by the drive device 33 and is stopped facing the carry-in device 4. Before and after this, the stopper plate 47 is moved so as to project. The pallet 19 on the receiving conveyor 65 is supported by the pallet receiver 66 by the descending movement of the receiving conveyor 65,
The internal combustion engine 18 thus positioned is subjected to a desired performance test while it makes almost one revolution with the turntable 10. The empty unloading carriage 60 is moved farthest from the unloading equipment 6 by the drive device 33, and as described above,
When the 20 and turntable 10 are integrated, the loading carriage
The 20 side opposes the test device 11 which is one pitch lower, and is integrally moved by the engagement movement of the engagement / disengagement device 50. During this integral movement, first the hook 63 with the movable table 38 is turned table.
10 is moved upward so that the hooking piece 63 faces the standing surface of the pallet 19. Next, the first cylinder device 39 of the drawer device 62
Is contracted, and the pallet 19 on the receiving conveyor 65 is pulled out onto the chain 30 of the transfer device 61 via the hooking piece 63 that moves back and forth together with the movable table 38. At this time, the transfer device 61 is driven, the drawn pallet 19 is transferred until it comes into contact with the stopper plate 47, and the anti-back stopper 48 blocks the retreat. When this pulling out is completely completed, the engaged member 54 is moved backward to move the turntable 10
Remove the unloading cart 60 from. The removal of the carry-out carriage 60 is carried out separately regardless of the separation on the carry-in carriage 20 side. As a result, the unloading carriage 60 that has become free is adjusted and moved in the forward or reverse direction, and is stopped facing the unloading device 6.
Then, with the stopper plate 47 retracted, the transfer device 61
And the unloading device 6 are operated to move the pallet 19 on the unloading cart 60.
Is transferred onto the carry-out device 6. And the unloading truck 60 that became empty
After the stopper plate 47 is moved so as to project, is moved to the position farthest from the carry-out device 6 as described above. The pallet 19 supporting the tested internal combustion engine 18 and taken out onto the carry-out device 6 is transferred to the carry-out conveyor 8 via the discharge device 7 with a turntable, and conveyed to the next step.

FIG. 6 and FIG. 7 show another embodiment in which a fork that can be raised and lowered and retracted is used as the transfer devices 21 and 61.
That is, a lifting platform 70 is provided between the chains 30, and a pair of left and right pantograph mechanisms 71 for vertically guiding the lifting platform 70 and a lifting drive unit 72 are provided between the lifting platform 70 and the carriages 20 and 60. And are provided. The lifting drive device 72 is used for the trolley 20, 60.
Side-to-side pair of front-rear shafts 74 supported by bearings 73
A pair of front and rear link interlocking mechanisms 75 for synchronously rotating the front and rear direction shafts 74, a pair of links 76 respectively attached to the front and rear direction shafts 74, a roller 77 attached to a free end of these links 76, and one of The cylinder 77 is linked to a lever 78 attached to the front-rear shaft 74, and the roller 77 is in contact with the lower surface of the lifting table 70 from below. The lift 70
A fork 80 that can move in and out in the left-right direction is provided on the top. The fork 80 is supported and guided by a pair of guide rails 81 provided on the support frame 25 side in the front and rear direction through a plurality of rollers 82. Then, the drive device 83 of the fork 80 is moved up and down.
A motor 84 mounted on the 70, a drive gear 85 attached to its output shaft, a pinion 86 meshed with the drive gear 85 and rotatably supported on the lifting platform 70 side, and meshed with the pinion 86 from above. Therefore, it is composed of a rack 87 attached to the lower surface of the fork 80. A load receiving plate 88 is attached on the upper surface of the fork 80 and on the turntable 10 side, and a stopper 89 is provided upright at the end of the frame 26 on the turntable 10 side. Note that the stopper 89 is provided on the turntable 10 side in the case of the carry-in carriage 20, and is provided on the carry-out device 6 side in the case of the carry-out carriage 60. The test apparatus 11 is provided with a pallet receiver 90 that directly receives the pallet 19.

Next, the transfer operation in this another embodiment will be described.

The pallet 19 supporting the internal combustion engine 18 is located at the end of the carry-in device 4, and the carry-in carriage 20 is stopped facing the carry-in device 4 as described above. At this time, in the loading carriage 20, the fork 80 moves back and forth so as to be housed in the lifting platform 70, and the lifting platform 70 descends so that the load receiving plate 88 is located below the transport surface of the chain 30. In this state, the carry-in device 4
The pallet 19 is sent from the
It is carried in while being supported by 30, and comes into contact with the stopper 89 to stop above the load receiving plate 88. Next, the cylinder device 79 is operated to synchronously rotate both front-rear direction shafts 74 via the lever 78 and the link interlocking mechanism 75, and the rollers 77 are moved upward via both links 76. As a result, the lifting platform 70
Rises, and at that time, rises vertically by the pantograph mechanism 71. The lifting platform 70 raises the fork 80 integrally, and the load receiving plate 88 abuts the lower surface of the pallet 19 so that the pallet 19 is
Is lifted from chain 30. Then, the motor 84 is operated,
Fork 80 via drive gear 85, pinion 86, rack 87
Is moved so that the pallet 19 is positioned above the pallet receiver 90 of the test apparatus 11. Then, the fork 80 is lowered together with the lifting platform 70, and the pallet 19 is placed on the pallet receiver 90. After that, the movable table 38 is moved back and forth to complete the loading operation. In the unloading cart 60, the load receiving plate 88 performs a reverse operation, and thus the pallet 19 on the pallet receiving member 90 can be directly received and transferred onto the chain 30.

Effects of the Invention According to the present invention having the above-described configuration, after the loading carriage supports the object to be transported, the loading / unloading equipment between the loading carriage and the turntable is engaged and the both are integrally moved to carry in the goods. Objects to be transferred on the transfer device of the carriage can be transferred to the turntable side. And by detaching the engagement / disengagement device,
The carry-in carriage can be moved back and stopped facing the carry-in device. On the other hand, while the engaging / disengaging device between the unloading carriage and the turntable is engaged and the both are integrally moved, the transported object on the turntable can be moved to the unloading carriage side.
In such an operation, both carriages simultaneously move integrally with the turntable to transfer the transported object. Then, the transfer work ends almost at the same time, but at that time, since both carriages can be individually returned and moved by detaching the engagement / disengagement device, before the work of one carriage is completely completed, the other carriage is It is possible to move to other work (return movement, etc.), and the flexible operation can be performed correspondingly, the cycle time can be improved, and the whole work can be performed efficiently.

Further, in the present invention, since the transfer device is configured by the fork, the combined operation of the ascending / descending movement and the retracting / moving movement of the fork allows the transported object to be directly transferred between the turntable side supporting portion (receiving member). Therefore, the turntable side can simplify the structure and control and can perform the entire work more efficiently without providing a roller conveyor or the like that can freely move up and down.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a front view of a loading carriage portion, FIG. 3 is a plan view thereof, and FIG. 4 is a side view thereof. 5 is a front view of the carry-out carriage portion, FIG. 6 is a front view of the carry-in carriage portion in another embodiment, and FIG. 7 is a plan view of the same. 1 ... carry-in route, 4 ... carry-in device, 5 ... carry-out route, 6
…… Unloading device, 10 …… Turntable, 11 …… Testing device, 15 …… Movement path, 17 …… Floor rail, 18 …… Internal combustion engine (object to be transported), 19 …… Pallet, 20 …… Carrying truck ,twenty one…
… Transfer device, 24 …… Traveling drive device, 30 …… Chien, 30a
…… Supporting surface, 35 …… Extrusion device, 41 …… Pushing piece, 42…
… Stopper device, 47 …… Stopper plate, 50 …… Disengagement device,
54: engaged member, 56: engaging member, 60: unloading carriage,
61 …… Transfer device, 62 …… Drawer device, 63 …… Hooking piece, 65 …… Receiving conveyor, 66 …… Pallet holder, 70
…… Lifting platform, 80 …… Fork, 83 …… Exit drive device, 88
…… Billing plate, 90 …… Pallet holder.

Claims (2)

[Claims] 1. A loading carriage and a unloading carriage, each of which is capable of reciprocating independently on an arc-shaped movement path along the outer circumference of the turntable, are provided on the outside of the turntable, and a transfer device is provided for each of these carriages. An engaging / disengaging device is provided between the turntable and the two carriages, and a device for loading and unloading an object to be transported is provided outside a moving path of the two carriages. Mounting device. 2. The transfer device for a turntable according to claim 1, wherein the transfer device is a fork that is vertically movable and can be retracted and retracted.