JPH02192834A - Transfer press - Google Patents

Abstract

PURPOSE:To make respond to the mass production for formed parts of the same shape and the small quantity production for multiple items by performing the transportations by a transfer bar and by a robot through one press body. CONSTITUTION:In the transportation of works by the transfer bar 7 a moving bolster 2 is carried into the press body 1 and an intermediate member 72 supported on a bar receiving rest 8 is connected to both end members 71, 73 in the press body 1. The transfer bar 7 is actuated, works 6 carried in are transported in sequence to each station of a die to form the works 6. On one hand, when the multi-item small quantity production is performed at the same line, a moving bolster 3 wherein dies 14 to perform the multi-item small quantity production are installed is carried into the press body 1. A robot carrier 15 with the bolster 3 is carried into the press body 1 to transport the work 6 by each robot 17 between the dies and the corresponding work 6 can be transported in spite of change of transporting pitches and transporting postures.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transfer press in which transport by a transfer bar or transport by a robot can be selected.

[Conventional technology]

Conventional transfer presses have a pair of transfer bars that operate two-dimensionally or three-dimensionally, and are configured to sequentially transport workpieces to each processing station by these transfer bars.

[Problem to be solved by the invention]

However, with the transfer bars installed in conventional transfer presses, the work cannot be transferred unless the transfer pitch and transfer posture are constant, so a dedicated transfer mold is required, resulting in problems such as the inability to handle high-mix, low-volume production. there were.

The present invention has been made in order to improve the above-mentioned problems, and aims to provide a transfer press in which conveyance by a transfer bar and conveyance by a mouth pot are made possible by a single press body.

[Means and operations for solving the problems] In order to achieve the above object, the present invention provides at least 22 parts that can be taken in and out of the press body alternately. A moving bolster is provided, one of these moving bolsters is provided with a transfer mold and a central member divided by a transfer bar provided in the press body, and the other moving bolster is provided with a plurality of molds, A robot carrier is provided that is detachably connected to the moving bolster, and at least one robot is provided on the robot carrier, so that the moving bolster provided with the transfer mold and the intermediate member can be moved into the press body. By loading the press, the workpiece can be transported by a transfer bar, and by loading the moving bolster connected to the robot carrier into the press body, the robot can carry out the workpiece unloading and transport between molds. It provides a transfer press.

〔Example〕

An embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes a press body, which has two moving bolsters 2.3 that can be taken in and out alternately. It is possible to enter and exit the press body 1 from the front and rear.

Reference numeral 5 denotes a transfer feeder, which includes a pair of transfer bars 7 that are arranged parallel to each other along the conveyance direction (arrow A) of the workpiece 6.
is operated by a drive mechanism (not shown) in the three-dimensional directions of the feed direction, lift direction, and clamp direction, so that the workpiece 6 can be transported.

Further, the transfer bar 7 can be divided into three parts, into both end members 71 and 73 and an intermediate member 72, and when the intermediate member 72 is carried out, the bar holder provided on the moving bolster 2 is placed on the stand 8. It is supported so that it can be carried out of the press body 1 together with the moving bolster 2, and the fingers ( (not shown) can also be replaced.

On the other hand, on the workpiece loading side of the press body 1, the workpieces 6 separated one by one by the disc picker 10 are loaded onto the press body 1.
A workpiece carry-in device 12 is provided on the carry-out side, and a workpiece carry-out device 13 is provided on the carry-out side to carry the molded workpiece 6 out of the press body 1.

Further, a plurality of molds 14 are installed on the moving bolster 3 at arbitrary pitches, and a robot carrier 15 is connected to the moving bolster 3 via a connecting rod 16.

The robot carrier 15 has wheels 15a at the bottom and can move on the rails 4 together with the moving bolster 3, and a plurality of robots 17 are installed at the top along the conveyance direction of the workpiece 6. ing.

Each of these robots 17 has an arm 17a to which a work holding member 18 such as a vacuum cup that sucks the work 6 is attached to the tip thereof, and these arms 17a transport the work 6 by a movement taught in advance before the start of operation. It looks like this.

Next, to explain the operation, when carrying out normal work transfer using the transfer bar 7, the moving bolster 2 that is waiting behind the press body 1 is carried into the press body 1,
The bar holder connects the intermediate member 72 supported on the table 8 to both end members 7 in the press body 1. ．． 7. Concatenate.

In this state, the transfer bar 7 is operated, and the workpieces 6 carried in one by one by the workpiece carry-in device 12 are sequentially conveyed to each processing station of the transfer mold, and the workpieces 6 are formed, and the formed workpieces are 6 is a workpiece unloading device 131; the workpiece is transported out of the press main body 1.

Note that the workpiece conveyance pitch at this time is a constant pitch.

On the other hand, when performing high-mix low-volume production on the same line, the moving bolster 3 with the mold 14 installed for high-mix low-volume production is carried into the press body 1. Teaching and simulating the transfer operation of the robot 17 are performed outside to confirm the operation.

After that, the robot carrier 15 is carried into the press body 1 together with the moving bolster 3, and each robot 17 transports the workpiece 6 between the molds 14, so that it can cope with changes in the transport pitch and transport posture. The workpiece 6 can now be transported.

Further, since the robot carrier 15 carrying the robots 17 can be separated from the moving bolster 3 by removing the connecting rod 16, each robot 17 can be used on other press lines.

In the above embodiment, the robot 17 is installed on the robot carrier 15 which is detachably connected to the moving bolster 2, but as shown in FIG. The robot may be mounted by horizontally suspending the rod 20, and each robot 17 may be mounted on the rod 20.

〔Effect of the invention〕

As described in detail above, this invention enables the selection of workpiece conveyance by a transfer bar and workpiece conveyance by a robot in one press body, making it possible not only to mass produce the same molded product but also to produce a wide variety of products in small quantities. It is now possible to handle production, and there is no need to make major changes to the line every time the production item changes.

In addition, since the robot carrier carrying the robot can be detached and freely connected to the moving bolster, it can be pulled out from the press body together with the moving bolster.
The robot can be taught and its motion simulated outside the press body, and by separating the robot carrier from the moving bolster, the robot can be used for presses on other lines, making it more economical as there is no need to prepare a robot for each line. It is true.

Furthermore, by installing a rod horizontally between the applied parts of the press body and attaching the robot to the rod, the robot can be easily installed and the moving bolster can be installed without having to move the robot in and out. The mold can be replaced by pulling it out from inside the press body.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the invention, and FIG. 2 is a perspective view showing another embodiment. 1 is a press body, 2 and 3 are moving bolsters, 7 is a transfer bar, 72 is a central member, 14 is a mold, 15 is a robot carrier, and 17 is a robot.

Claims (2)

[Claims] (1) At least two moving bolsters 2 and 3 are provided that can be taken in and out of the press body 1 alternately, and one of these moving bolsters 2 and 3 has a transfer mold and a mold that is provided inside the press body 1. A central member 72 divided from the transfer bar 7 is provided, and the other moving bolster 3 is provided with a plurality of molds 14 and a robot carrier 15 detachably connected to the moving bolster 3. A transfer press including at least one robot 17 on a carrier 15. (2) A transfer press in which each of the robots 17 described above is attached to a robot mounting rod horizontally suspended between the uprights 1a of the press body 1.