Tool changing – With control means energized in response to activator... – Responsive to tool identifying information
Patent
1993-09-14
1995-08-22
Bilinsky, Z. R.
Tool changing
With control means energized in response to activator...
Responsive to tool identifying information
72405, 483 29, B21J 1308, B23Q 3155
Patent
active
054434360
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an automatic cross bar exchanging device for a transfer feeder, and a control system therefor.
BACKGROUND OF THE INVENTION
Conventionally, a transfer feeder employing a vacuum transporting system includes a plurality of cross bars transversely arranged between a pair of transfer feeders which are arranged in parallel with respect to a workplace transporting direction. For each of these cross bars, a work drawing means, such as a vacuum cup, is attached for drawing the workpiece.
The size of the above-mentioned workpiece drawing means is different depending upon the workpiece to be transported. Therefore, in the prior art devices, the cross bar must be removed from a press machine upon changing of the dies to provide cross bars having the proper workpiece drawing means mounted on them. This exchange is done external to the press prior to pressing. Further, the cross bars must be removed in order to exchange the workpiece drawing means.
However, the conventional exchanging operation has been performed manually by a worker and can take a long period of time and thus be inefficient. Furthermore, it is possible to damage the apparatus by interference with the die due to error in mounting or adjustment.
SUMMARY OF THE INVENTION
In view of the above-mentioned circumstances, the present invention has been used to improve the above-mentioned defects. Therefore, it is an object of the present invention to provide an automatic exchanging device for a transfer feeder cross bar, and a control system therefor, which makes it possible to perform automatic exchanging of the cross bar.
In order to accomplish the above-mentioned object, a cross bar automatic exchanging device of a transfer feeder, according to the first aspect of the present invention, comprises: body with cross bars to be used for the next time via a moving bolster, together with a die to be exchanged; and press processes.
Also, in order to accomplish the above-mentioned object, a control system for a cross bar automatic exchanging device, in accordance with the second aspect of the invention, in which cross bars removed from a press body via a moving bolster together with a die to be exchanged are stored in a cross bar storage rack by a cross bar exchanging robot, and subsequently cross bars adapted to a die to be used in the next operation are set on the moving bolster by the cross bar exchanging robot, comprising: indication provided on a plurality of dies and selecting a respective one of the dies to be used in the next operation; the die to be used in the next operation among a plurality of cross bars respectively provided identification indications; exchanging robot for taking out the discriminated cross bars from the cross bar storage rack; of cross bars stored in the cross bar storage rack; and storage rack.
With the cross bar exchanging device according to the present invention, the cross bars removed from the press body via the moving bolster together with the used die are taken out by the cross bar exchanging robot and stored in the cross bar storage rack, and the cross bars to be used in the next operation are taken from the cross bar storage rack and set on the moving bolster. Therefore, the cross bar exchanging operation can be performed automatically.
Since the exchanging of the cross bars can be efficiently performed in a short time, a shortening of the entire exchanging time is possible, as is an improvement of productivity. Also, since an error in mounting or adjustment will never occur, a damaging of the die can be prevented.
Further, with the control system for the cross bar automatic exchanging device, the used die removed from the transfer press via the moving bolster is identified the cross bars removed are carried by the cross bar exchanging robot to be stored in vacant storage positions in the cross bar storage rack, and the cross bars taken out from the cross bar storage rack are set on the cross bar receptacle base by means of the robot. Thus, since the die and the cr
REFERENCES:
patent: 5097695 (1992-03-01), Brzezniak
patent: 5140839 (1992-08-01), Bruns
patent: 5248288 (1993-09-01), Kamiya et al.
patent: 5337594 (1994-08-01), Petterson et al.
Enomae Satoru
Kawakami Hideaki
Bilinsky Z. R.
Kabushiki Kaisha Komatsu Seisakusho
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