JPH0734943B2 - Transfer press work loading / unloading device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a work loading / unloading device for a transfer press, which loads and unloads a work by using divided transfer bars.

[Conventional technology]

Conventionally, a transfer press has a pair of transfer bars that operate two-dimensionally or three-dimensionally, and these transfer bars are used to carry in a work, carry it between processing stations, and carry it out.

However, in the transfer bar provided in the conventional transfer press, the work cannot be carried unless the carrying pitch and the carrying posture are constant.Therefore, a special transfer die is required, and it is not possible to handle high-mix low-volume production. there were.

In order to improve the above problems, there has already been proposed a transfer press in which another transfer means such as a robot is carried into the press body and the work is transferred by this transfer means.

[Problems to be Solved by the Invention]

However, in the case of carrying a work by carrying a carrying means such as a robot into the press body, it is necessary to separately provide a carry-in and carry-out means to carry in and carry out the work, which makes the entire apparatus expensive. was there.

The present invention has been made for the purpose of improving the above-mentioned inconvenience, and an object of the present invention is to provide a work loading / unloading device for a transfer press, which loads and unloads a work by utilizing an existing transfer bar left in the press body. It is what

[Means and Actions for Solving the Problems]

In order to achieve the above object, the present invention is a transfer press that transfers a work by a transfer bar that can be divided into a plurality of end bars and a center bar. Specially, by connecting the movable table installed with a transfer device that transfers the work between the two, and connecting and disconnecting the work with the both-end bars left in the press body, and carrying out the completed work. The present invention provides a work loading / unloading device for a transfer press that can load and unload a work without the need for a new loading / unloading device.

〔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 a moving bolster 2 which can be freely put in and taken out.

Reference numeral 3 denotes a pair of transfer bars arranged side by side in the press body 1 along the conveying direction (arrow A) of a work (not shown), which can be divided into _three bars, both end bars 3 ₁ , 3 ₃ and a central bar 3 _2. as it has been in the central bar 3 ₂ is adapted to be carried out to press body 1 outside is placed on the bar pedestal 4 provided in the mold at the time of replacing the moving bolster 2 with moving bolster 2.

Both end bars 3 ₁ , 3 ₃ of the transfer bar 3 are driven in the feed direction, lift and clamp direction by a feed drive mechanism 5 and a lift and clamp drive mechanism 6 installed on the work loading and unloading sides of the press body 1. It has become so.

On the other hand, a moving table 7 is detachably connected to the moving bolster 2 via a connecting rod 8. On the moving table 7, transfer devices 9 are installed at intervals in the work transfer direction.

The transfer device 9 is composed of, for example, a plurality of robots 9 ₁ and 9 ₂ that operate in synchronization with each other, and has an arm 10 that operates in three-dimensional directions according to the contents taught in advance before the start of operation.

A grip 11 for gripping a workpiece is provided at the tip of each of the arms 10.
Are provided, and the work gripped by the grip 11 is sequentially conveyed to the processing stations W ₁ , W _2, ...

Next, the operation will be described. When operating as a normal transfer press, both end bars 3 ₁ and 3 ₃ and the central bar 3 ₂ are connected to each other, and the feed drive mechanism 5 and the lift and clamp drive mechanism 6 are connected to each other. By being operated in a three-dimensional manner, the work is carried in and carried between the processing stations W ₁ , W _2, ...

Next, using the transfer device 9, each processing station W ₁ , W _2, ...
When performing work transfer between the central bar 3 ₂ unloaded from the press body within 1 together with the moving bolster 2 by dividing the transfer bars 3 across the bar 3 _1, 3 ₃ and the central bar 3 _2,
Next, the moving bolster 2 to which the movable table 7 is connected is carried into the press body 1.

Then, when the work is started in this state, the both end bars 3 ₁ located on the upstream side carry the work into the first processing station W ₁ , and at the first processing station W ₁ , the work completed by the transfer device 9 is transferred. The first robot 9 ₁ of the above conveys to the next processing station W ₂ .

Each processing station in accordance with the following slide (not shown) operates across bar 3 ₁ on the upstream side of the loading of the workpiece, and that each robot 9 ₁ of the transfer device 9, 9 ₂ ... is preliminarily Techingu within each repeated vertical movement W _1, W ₂ ... to conveys the workpiece, finishing the work molding is complete the station W _5, discharge conveyor 12 by both end bars 3 ₃ located downstream
And is further carried out by the carry-out conveyor 12.

〔The invention's effect〕

As described in detail above, the present invention, when carrying a work between the processing stations using a carrying device such as a robot, carries in the work by the both-end bars left in the press body and finishes the forming. Since the work is carried out, it is not necessary to separately install a device for carrying in and carrying out the work, and the facility cost can be reduced.

In addition, since the workpieces are transferred between the processing stations by using a transfer device such as a robot, the transfer pitch may be different and the die height may be higher or lower than the transfer bar that transfers the workpieces between the processing stations. However, it is economical because it can be easily dealt with and does not require an expensive transfer die.

[Brief description of drawings]

FIG. 1 is a plan view, FIG. 2 is a front view, and FIG. 3 is a side view. 1 is a press body, 2 is a moving bolster, 3 is a transfer bar, 3 ₁ and 3 ₃ are both end bars, 3 ₂ is a central bar, 7 is a moving table, 9 is a transfer device, and 9 ₁ and 9 ₂ are robots.

Claims (2)

[Claims] 1. A transfer bolster 2 which is movable in and out of a press body 1 in a transfer press in which a work is conveyed by a transfer bar 3 which can be divided into a plurality of end bars 3 ₁ , 3 ₃ and a central bar 3 _2. , Each processing station
A moving table 7 having a transfer device 9 for transferring a work between W ₁ , W ₂ ... Is detachably connected, and the work is carried in by both end bars 3 ₁ , 3 ₃ left in the press body 1. And a work loading and unloading device for a transfer press, which unloads a work that has been molded. 2. The transfer device 9 comprising a plurality of robots 9 ₁ , 9 ₂
The work loading / unloading device according to claim 1, which is configured by