JPS6235866B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for loading and unloading workpieces into and out of a processing machine such as a portal type multi welding machine.

Conventionally, the third type is used for the trolley-type gate-type multi welding machine used in welding factories for automobile bodies, etc.
A device for loading and unloading workpieces as shown in the figure is used. That is, the multi welding machine 1 is arranged at a processing position A of a workpiece (workpiece) 2, a set position B of the workpiece 2 is on the left side of the processing position A, and a set position B of the workpiece 2 is on the right side. A take-out position C for the workpiece 2 is provided respectively. The multi welding machine 1 is fixed on a base 3, and the carrier 4 reciprocates on this base 3 in the XY direction. 5, 5 is the transport truck 4
6 is the wheel attached to the transport vehicle 4
- Shows the cylinder device for driving in the Y direction.
A fork 4a is integrally attached to the tip of the transport vehicle 4 in the Y direction, and this fork 4a
Attachments 7, 7, 8, and 8 for supporting the workpiece 2 are fixed on the top and the transport vehicle 4, respectively.

In a conventional device having such a configuration,
When the carriage 4 is at the left end position (solid line position) in FIG. 3, the workpiece 2 is set on the attachments 7, 7 at the set position B. When the setting is completed, the cylinder device 6 is activated to move the carrier 4 in the Y direction and stop it at the imaginary line position in the figure. As a result, the workpiece 2 is located at the processing position A, so the multi-welder 1 welds the workpiece 2 on the attachments 7, 7.
After welding, the workpiece 2 is temporarily moved by a transfer device (not shown) installed in parallel to the multi-welder 1.
It is lifted above the transport vehicle 4. In this state, the empty conveyance cart 4 is linked to the cylinder device 6 which operates in reverse to return it to the position shown in the solid line in the figure, and when this return is completed, the aforementioned transfer device is activated to lift it up. The workpiece 2 that was being held is transferred onto the attachments 8, 8 on the fork 4a. A new workpiece 2 is then set on the attachments 7, 7, and when this setting is completed, the carriage 4 is moved again in the Y direction. In this way, the carriage 4 stops at the imaginary line position in the figure, and the workpiece 2 on which welding on the attachments 8, 8 has been completed is taken out at the take-out position C, and is newly set on the attachments 7, 7. The processed workpiece 2 is welded at the processing position A by the multi welding machine 1.

As is clear from the above description, in the conventional apparatus described above, the workpiece 2 that has undergone processing such as welding is transferred from the attachments 7, 7 to the attachments 8, 8 of the transport vehicle 4, and then transported out. Further, this unloading operation cannot be performed until a new workpiece 2 is set on the attachments 7, 7 of the transport vehicle 4. Therefore, even though welding of the workpieces 2 on the attachments 8 and 8 has already been completed, until the setting of the new workpieces 2 on the attachments 7 and 7 is completed,
This causes the problem that the machining efficiency of the workpiece 2 cannot be sufficiently increased because it stops at the machining position A.

An object of the present invention is to provide a workpiece loading and unloading system that allows a workpiece that has been processed by a welding machine to be freely carried out to a take-out position, regardless of whether or not a new workpiece has been set. The goal is to provide equipment.

The workpiece loading/unloading device of the present invention is provided with a loading truck and a loading truck that are each driven by independent drive systems, and the workpiece transported by the loading truck is transported to the processing position. A transfer device for transferring onto a cart is provided separately from the carry-in cart and the carry-out cart. That is, the carry-in carriage reciprocates between the workpiece setting position and the processing position, and the carry-out carriage reciprocates between the processing position and the take-out position. The workpieces transported to the processing position by the carry-in cart are then subjected to processing such as welding on the carry-in cart that has stopped at the processing position, and when this processing is completed, the workpiece is transferred to the transfer device installed at the processing position. It was then lifted temporarily above the loading cart. As a result, the carry-in carriage becomes empty and returns to the set position, and the carry-out carriage, which has been moved from the take-out position, stops below the workpiece lifted by the transfer device. Then, the workpiece supported by the transfer device is transferred to the carry-out cart, and the carry-out cart carrying the workpiece moves to the take-out position. During this time, a new workpiece can be set on the carry-in cart, so according to the apparatus of the present invention, carrying out and taking out the workpiece after processing and setting a new workpiece are carried out independently and in parallel. This makes it possible to significantly improve processing efficiency.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

This embodiment shows a case in which the present invention is applied to a gate-type multi welding machine 9, in which a base 10 is set at a set position B, a processing position A,
It is divided into extraction position C. Gate type multi welding machine 9
is placed on the base 10 corresponding to the processing position A,
It has a transfer device (not shown). A carry-in cart 12 and a carry-out cart 13 are arranged on the base 10, the carry-in cart 12 reciprocates between the set position B and the processing position A, and the carry-out cart 13 moves between the processing position A and the take-out position C. each reciprocate independently. That is, the carry-in cart 12 is driven by the cylinder device 14 mounted on the base 10, and the carry-in cart 13 is driven by the cylinder device 14 mounted on the base 10.
is driven by a cylinder device 15 which is also mounted on the base plate 10. 16, 16 are wheels for smoothly moving the loading cart 14;
Reference numerals 7 and 17 indicate wheels attached to the unloading cart 13 for the same purpose. As shown in the first figure, a sliding body 19 that engages with a guide rail 18 is also attached to the unloading truck 13, and the unloading truck 13 is moved along a predetermined track by the sliding body 19 and the guide rail 18. Can be moved. Note that the carry-in truck 12 also has a similar configuration. And loading cart 1
2, and attachments 20, 20, ..., 2 for holding the workpiece 11 on the carrying cart 13.
1, 21, . . . are respectively attached.

The action will be explained below.

When the carry-in carriage 12 is at the set position B, the workpiece 11 is attached to its attachments 20, 20, and when this attachment is completed, the cylinder device 14 is operated to move the carry-in carriage 12 to the processing position A. When the carry-in cart 12 stops at the processing position A, the gate-type multi welding machine 9 operates to weld the workpiece 11 on the carry-in cart 12. When this welding is completed, a transfer device (not shown) removes the workpiece 11 from the attachments 20 and 20, and
Hold it temporarily in the lifted position. During this period, the carry-in cart 12 returns to the set position B by the reverse operation of the cylinder device 14, and the carry-in cart 13 returns to the set position B.
moves to the machining position A in conjunction with the cylinder device 15. Then, the unloading cart 13 moves to the processing position A.
When the transfer device (not shown) transfers the workpiece 11 to the attachments 21 and 21 of the carriage 13,
A new workpiece 11 is mounted on the carry-in trolley 12 which has stopped at the set position B.

Next, the cylinder device 15 is activated to transport the carry-out cart 13 from the processing position A to the take-out position C, where the processed workpiece 11 is taken out. Then, while the carry-out carriage 13 moves from the processing position A to the take-out position C, the new workpiece 11 set on the carry-in carriage 12 can be transported to the processing position A.

As explained above, according to the loading/unloading device of the present invention, a loading truck and a loading truck driven by independent drive systems are provided, and a transfer truck separate from the loading truck and the loading truck is provided at the processing position. Since the apparatus is provided, it becomes possible to carry out the workpieces after processing and to set and carry in the workpieces before processing, independently and in parallel. Therefore, it is possible to obtain the effect that the series of operation time for carrying in, processing, and carrying out the workpiece is significantly shortened.

Furthermore, the structure is simple and has wide versatility.

In addition, in the above embodiment, a gate-type multi welding machine is arranged at the processing position, but this does not mean that the processing content is limited to welding. Furthermore, although one carry-in/take-out device is shown in the above embodiment, if two such devices are installed in parallel and the workpieces are processed alternately, the work efficiency will be further improved.

[Brief explanation of the drawing]

FIG. 1 is a front view of the apparatus of the present invention, FIG. 2 is a side view of the apparatus of the present invention taken along the line --- in FIG. 1, and FIG. 3 is a side view of the conventional apparatus. 9... Gate type multi welding machine, 10... Base, 11
...Workpiece, 12... Carrying-in trolley, 13... Carrying-out trolley, 14, 15... Cylinder device, 20, 21
...Attachment, A...Processing position, B...Set position, C...Ejecting position.

Claims (1)

[Scope of Claims] 1. A carry-in cart that reciprocates between a set position of a workpiece and a processing position, and a carry-out cart that reciprocates between the processing position and a take-out position of the workpiece, respectively. a transfer device that lifts and holds the workpiece that has been processed at the processing position from the carry-in cart, and when the carry-out cart reaches the processing position, lowers the workpiece onto the carry-out cart and transfers it onto the carry-out cart; is arranged at the processing position separately from the carrying-in cart and the carrying-out cart, and each of the carrying-in cart and the carrying-out cart is provided with a cylinder device separately from each other so that they can be moved independently of each other. Equipment for loading and unloading workpieces. 2. Carrying in the workpiece according to claim 1, in which a gate-type multi welding machine is arranged at the processing position.
Export device. 3. The workpiece loading/unloading device according to claim 1, wherein the reciprocating direction of the loading truck and the reciprocating direction of the loading truck are the same direction.