JPH02100915A - Work moving device - Google Patents

Abstract

PURPOSE:To rapidly execute an operation by forming aligning respective areas for loading, moving and unloading a pallet on a pallet loading surface, moving from the loading area to the unloading area so as to load and unload a vacant pallet in a device for moving a work with pallet between conveyors with different height. CONSTITUTION:The support base 17 of a work moving device 5 is lowered to the height of a second station 2 and a work 16 with a pallet 15 on the station is pulled to a loading area 33. A vacant pallet 15' returned by a hanger from a first station not shown and standing by on a moving area 34 is taken by raising the support base 17. The, the vacant pallet 15' and the work16 with the pallet 15 are respectively moved by one area, the vacant pallet 15' is moved to an unloading area 35 and the work 16 to a moving area 34 and processed respectively. This operation is repeated to rapidly perform the operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is provided between conveyor devices having different heights, and receives a workpiece with a pallet from a lower conveyor device on a pallet mounting surface. The workpiece is lifted up and transferred to the conveyor device on the higher side along with the pallet, and the empty pallet from which the workpiece has been removed is picked up on the pallet loading surface from the conveyor device on the higher side. This relates to transfer equipment.

[Conventional technology]

Traditionally, on vehicle assembly lines, overhead type and floor type conveyors are used as needed, and workpieces are transferred at a relatively low speed by each conveyor while processing and assembly are performed on the workpieces. We aim to improve work efficiency by giving a certain flow to this work.

Since the heights of the overhead type and floor type conveyors are different from each other, it is necessary to transfer the work placed on either the overhead type or floor type conveyor to the other conveyor. As a device that performs this, there is known a cargo transfer device between conhairs disclosed in Japanese Utility Model Application Publication No. 154221/1983.

By the way, on a vehicle assembly line, for example, there is a process of assembling a transmission and a transmission to an engine assembled on the engine assembly line, and in this case, a hanger line is used to transport the transmission to the vehicle assembly line. , a workpiece transfer device for transferring the transmission to the hanger, a conveyor device for supplying the transmission with valent to the workpiece 1>R device, and the like are provided. To ensure accuracy, the transmission is generally assembled on a balent, and the pallet is hung on a hanger and transported to the engine.
After being assembled into the engine, the empty pallet is hung again on the hanger and returned to the workpiece transfer device.

[Problem to be solved by the invention]

However, since the above-mentioned hanger only moves back and forth over a certain distance, the above-mentioned empty balent will be placed again on the workpiece transfer device at the same place where the transmission was placed. Therefore, in order to transfer the subsequent transmission to the above hanger,
The hook of this hanger is detached from the empty pallet, and the empty balent is lowered and carried out. At this lowered position, the transmission with the pallet is pulled from the lower conveyor to the place where the empty pallet was, and then It is necessary to raise the transmission and transfer it to the hanger, and while this series of relatively long steps is completed, the hanger must be on standby on the workpiece transfer device. This resulted in the problem of not being able to speed up the work.

[Means to solve the problem]

In order to solve the above-mentioned problem, the workpiece transfer device according to the present invention is provided between conveyor devices having different heights, and the workpiece with a pallet is transferred from the lower conveyor device to the pallet mounting surface. When the work is received at the top, it goes up and transfers the work E with the pallet to the conveyor device on the high position side, and also transfers the empty balent from which the work has been removed from the conveyor device on the high position side onto the above balent loading surface. In the workpiece transfer device that picks up the pallet r
The aIW surface is formed to a size that allows three pallets to be lined up in a row at the same time, and this pallet mounting surface is sequentially arranged from one end to a loading area for loading workpieces with balents, and a transfer area for transferring workpieces with pallets. The area is divided into three areas: a carry-out area for carrying out empty pallets; The present invention is characterized in that it includes movable means for moving empty pallets to the order page area and from the transfer area to the carry-out area.

[For production]

According to the above configuration, the pallet and the work with 7) are kept waiting in the carry-in area, and the empty pallet is picked up from the high-position conveyor device in the transfer area, and in this state, the pallet is moved in a certain direction by the movable means. The workpiece with pallet can be moved from the loading area to the transfer area, and the empty pallet can be moved from the transfer area to the unloading area, so the conveyor device on the high side can remove the empty pallet in the transfer area. After that, the palletized workpiece can be immediately received at the same transfer area. Therefore, the time during which the high-position side conhair device is on standby on the workpiece transfer device is significantly shortened, and the efficiency of the workpiece transfer operation can be improved.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

As shown in FIG. 3, there is a transmission receiving point (hereinafter referred to as the first station) la on the engine assembly line 1, and a transmission supply conveyor (hereinafter referred to as the second station) 2, which is a low-position conveyor device. In between, there is a hanger line (high-position conveyor device) 3 for transferring a transmission 16 (shown in FIG. 4) supported by a pallet 15.
A pool line 4 for pooling the transmission 16, which is a work, is provided between the hanger line 3 and the first station 1a, and a pool line 4 for pooling the transmission 16, which is a work, is provided between the hanger line 3 and the second station 2. Such workpiece transfer devices 5 are respectively provided, and an empty pallet delivery line 12 for receiving empty pallets 15' (shown in FIG. 1) is provided near the workpiece transfer devices 5. There is.

The hanger line 3 is composed of a rail 6 and a hanger device 7, as shown in FIG. 4(a). This hanger device 7 includes wheels 8, 8 that move on the rail 6,
A hanger 9 formed into a rectangular frame shape so as to surround a transmission 16 supported by a pallet 15, and hanging connecting members 10, 10 for connecting this hanger 9 and the wheels 8, 8, respectively. The vehicle is equipped with a motor 11 that drives the wheels 8 so that it can reciprocate along the rail 6 in the direction A-B. Also,
On both sides of the lower tip of the hanger 9, as shown in FIG.
As shown in the figure, five claws 9a are formed respectively, and these claws 9a are inserted under the pallet 15 to suspend the transmission 16 supported by the pallet 15. There is.

The workpiece transfer device 5, as shown in FIG.
a support stand 17 on which the transmission 16 supported by the transmission 16 is placed; and a lifting means 1 for raising and lowering the support stand 17.
8. The elevating means 18 includes a link mechanism 20 having a pantograph jack configuration,
The link mechanism 20 is expanded and contracted by the forward and backward movement of the cylinder device 19, and the support base 17 is moved up and down while being kept horizontal. At the highest position of the lifting device 18, the height of the pallet mounting surface (formed by rollers 25, which will be described later) on the support stand 17 is somewhat higher than the height of the balent 15 suspended by the hanger 9. At the lowest position, the height matches the height of the pallet 15 waiting at the second station 2. In addition, in order to guide the one end side of the link members 20a, 20a arranged in a dogleg shape, to move horizontally in accordance with the above-mentioned lifting/lowering operation,
In order to restrict this horizontal movement range, a link member 20 is provided on the lower surface of the support stand 17 and the upper surface of the machine stand 21.
Guide members 22 and 22 that engage with one end side of a and 20a are respectively fixedly provided.

The support stand 17 is equipped with a movable means 23 for moving the pallet 15 placed thereon in the C direction, and the movable means 23 is automatically controlled by a control means (not shown). As shown in FIG. 2, the movable means 23 includes rollers 25 . Rollers 26 disposed at both ends of the lower part of the plate 24, five rollers 27 disposed parallel to the above-mentioned rollers 25 below the center of the support plate 24, and driving force. A driving force relay device 28 that relays the
6.27... is the driving force transmission belt 29 passed over,
It is composed of a drive motor 30 that generates a driving force, and a transmission belt 31 that transmits the driving force of the drive motor 30 to the driving force repeater 28.

Each of the above rollers 27 is the roller 25, 25 above it.
The driving force transmission belt 2 is provided with its rotation center on a straight line extending directly below through the center of the gap between the driving force transmission belts 2 and 2.
9 is arranged in a meandering manner, with the hooks being alternately passed between the rollers 25 and 27. And each support trFj,2
The portion located above the roller 27 in No. 4 is cut out to form a total of five cutout portions 24a. Furthermore, the formation pitch of the five notches 24a is matched with the pitch of the five claws 9a formed on both sides of the lower end of the hanger 9, and thereby A claw 9 descending from the L side of the support plate 24
a... can pass through the gap between the rollers 25, 25, and sneak below the rollers 25...

Further, the above-mentioned ballet mounting surface 17a formed by the above-mentioned rollers 25 is formed in a size that allows three pallets 15 to be lined up in a row at the same time, and is divided into three functional areas. , the upstream area on the upstream side with respect to the C direction is a carry-in area 33 in which the pallet 15 is transferred, and the central area in the area where the above-mentioned notches 24a... are formed is a carry-in area 33 in which the pallet 15 is transferred to the hanger 9. The downstream area on the downstream side in the C direction is the unloading area 35 for exposing the pare・y) 15.

So-ζ, both ends of the above pallet mounting surface, O3
between the four-person area 33 and the transfer area 3/1, and
Between the transfer area 34 and the unloading area 35, there is a barre 71-1.
Stone bars 36 for regulating the movement of the ballasts 5 to other areas without permission are disposed so as to be freely retractable from the valent mounting surface 17a, respectively, by drive means (not shown).

In the above configuration, in order to transfer the transmission 16 with the pallet 15 from the second station 2 to the hanger 9, the support stand 17 is lowered by the lifting means 18 and
The transmission 16 with the pallet 15, which is waiting at the station 2, is pulled into the depression area 33. Transmission 16 with pallet 15 is stone bar 36
Its movement is restricted and it is in a waiting state above the infiltration area 33.

Meanwhile, the transmission 1 up to the first station 1a
6 is conveyed, and the hanger 9 that returns with the subsequent empty pallet 15' is stopped in the space above the transfer area 311.

At almost the same time, the support platform 17 is moved up and down by the lifting means 18.
Raise it at At the highest position of the support stand I7, the height of the pallet mounting surface of the support stand 17 is somewhat higher than the height of the pallet 15 suspended by the hanger 9.
The claws 9a... are the notches 24a... and the rollers 25.
・The rollers 25... pass through the gaps between the claws 9a, 25, and pass below these [l-ra 25...], and the empty bullets 15' that were supported by the claws 9a... I will support this on behalf of...

While maintaining the state in which the rollers 25... support the empty bullet 15', the control means operates the drive motor 30 to rotate the rollers 25, the empty bullet 15', and the ballet 15. Attachment 1: The transmission 16 is shifted upstream by the amount of the three regions. Therefore 2. The 1-transmission 16 with the barrel l-15 on the carry-in area b533 moves onto the transfer area 34, and the empty bullet 15' on the transfer area 34 moves onto the carry-out area 35, respectively.

Transmutation 16 with valent 15 is 1 polygon area 3
After moving to the 4th floor, the support platform 17 is lowered. Support stand 1
When 7 descends a little, the claw 9a... [Cola 25.
Transformer S No. 1 with pallet 15 instead of...
6 will be supported. Then, the hanger 9 starts moving to transport the transmission 16 to the first station 1a, while the support base 17 descends and reaches its lowest position on its pallet mounting surface. The height of the pallet 17a is made to match the height of the pallet 15 in the pallet 15-sized transmission 16 waiting at the second station 2.

When the heights of the two match in this way, the control means operates the drive motor 30 to rotate the rollers 25... and move the empty barre C. The empty pallet 15' is sent to the empty pallet carry-out line 12, and the transminsion 16 with the pallet 15 waiting at the second station 2 is pulled into the first storage area 33.

By repeating the above procedure, the transfer of the transminsion 1G with the balent 15 onto the hanger 9 and the exposure of the empty pallet 15' can be performed continuously.

As described above, since the pallet mounting surface 17a of the support stand 17 is divided into three areas and is provided with the movable means 23, the transmission 16 with the pallet 15 can be moved after receiving the empty pallet 15' from the hanger 9. The waiting time for the hanger 9, which is the time until it is delivered, can be significantly shortened.

That is, the transmission 16 with the pallet 15 is placed on standby in the carry-in area 33, and the hanger 9 is placed in the transfer area 34.
The empty pallet 15' is taken over, and in this state, the movable means 23 moves the balent 15 in a certain direction, and the transmission 16 with the pallet 15 moves the empty pallet 15' from the carry-in area 33 to the transfer area 34. Since the hanger 9 can be transferred from the loading area 34 to the unloading area 35, the empty pallet 1 can be moved from the loading area 34 to the unloading area 35.
This is because the transmission 16 with the pallet 15 can be received at the same transfer area 34 immediately after leaving the terminal 5'. In other words, when the area of the valent placement surface of the support stand 17 is only the transfer area, the hanger 9
It takes time for the support stand 17 to descend once and carry out the empty pallet 15', and then to place the transmission 16 with the pallet 15 on and rise again. With two areas, the support base 17
This makes it possible to transfer items without having to lift or lower them.

Further, in this embodiment, the rollers 25... and the rollers 27...
By providing the belt 29 in a meandering manner between the belts 29 and forming the notches 24a, the claws 9a can freely pass in the vertical direction between the rollers 25 and 25 in the transfer area 34. Therefore, the claws 9a do not need to be rotatably provided in order to detach the pallet 15 from the claws 9a, and the structure of the hanger device 7 is simplified.

〔Effect of the invention〕

As described above, the workpiece transfer device according to the present invention is provided between conveyor devices having different heights, and when a workpiece with a pallet is received from the lower conveyor device on the pallet placement surface, the workpiece transfer device rises. The workpiece is then transferred along with the pallet to the high-position conveyor device, and the empty balent from which the workpiece has been removed is picked up from the high-position conveyor device onto the above-mentioned balent placement surface. In the device, the above-mentioned pallet placement surface is formed to a size that allows three balents to be lined up in a row at the same time, and this pallet placement surface is sequentially connected from one end to a carry-in area for carrying in the workpieces with valents, and a loading area for carrying the workpieces with the pallets. It is divided into three areas: a transfer area for transferring and an unloading area for carrying out empty pallets, and the pallet placed on this pallet placement surface is moved in a certain direction to move the palletized workpiece to the above. The structure includes movable means for moving an empty pallet from the carry-in area to the transfer area and from the transfer area to the carry-out area.

This has the effect that the time during which the high-position conveyor device is on standby on the workpiece transfer device can be significantly shortened, and the workpiece transfer operation can be made more efficient.

[Brief Description of the Drawings] Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a front view of the workpiece transfer device, and Figure 2 is a side view of the workpiece transfer device. Figure 3 is an explanatory diagram for explaining the arrangement relationship between the wire transfer device and various lines arranged around it, Figure 4 (a) is a front view of the hanger line,
The figure (b) is a sectional view taken along the line X--X in the figure (a). 1a is the first station (transmission receiving point), 2 is the second station (transmission supply conhair: low position side conhair device) 3 is the hanger line (
(high position side conveyor device), 5 is workpiece 1 multi-loading device, 15
is a barent, 15' is an empty pallet, 16 is a transmission (work), 17 is a support stand, 17a is a pallet mounting surface, 18 is a lifting means, 23 is a movable means, 25, 26,
27 is a roller, 33 is an m-large area, and 34 is a transfer area 35 is an unloading area. Patent applicant Daifuku Co., Ltd. Same as above
Mazda Co., Ltd.

Claims (1)

[Scope of Claims] 1. It is provided between conveyor devices of different heights, and when a workpiece with a pallet is received from a lower conveyor device on the pallet mounting surface, it rises and the workpiece with the pallet is lifted up. While transferring to the conveyor device on the high position side,
In a workpiece transfer device that picks up empty pallets from which workpieces have been removed from the high-position conveyor device on the pallet placement surface, three pallets can be lined up simultaneously on the pallet placement surface. This pallet mounting surface is divided into three areas, starting from one end: a loading area for loading palletized workpieces, a transfer area for transferring palletized workpieces, and an unloading area for empty pallets. divided, and
A movable means is provided for moving the pallet placed on the pallet mounting surface in a certain direction to move the palletized workpiece from the loading area to the transfer area and the empty pallet from the transfer area to the unloading area. A workpiece transfer device characterized by: