JPH0593630U - Transfer press feed bar lift device - Google Patents

Abstract

(57) [Summary] [Purpose] Retract the feed bar to enable automatic die replacement. [Structure] A plurality of support arms 5 for supporting both ends of a divided feed bar 3 are provided on both sides of a moving bolster 2 which can be freely moved in and out of a press body 1, and the support arms 5 can be moved up and down. Moving bolster 2
The lift motor 11 provided on the upper and lower sides can be vertically moved in synchronism with each other. By retracting the feed bar 3 upward by the support arm 5 at the time of mold replacement, the mold can be moved without being disturbed by the feed bar 3. Automatic exchange is possible.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a feed bar lift device for a transfer press that retracts the feed bar upwards when changing dies.

[0002]

[Prior Art]

 Conventionally, the transfer press is equipped with a transfer feeder for transferring the work. The transfer feeder has a pair of feed bars arranged side by side in the work conveying direction, and conveys the work by driving these feed bars in two-dimensional or three-dimensional directions. .. In the conventional transfer press, when changing the mold, a moving bolster is used to carry a part of the feed bar out of the press together with the mold, and fingers are replaced by external setup.

[0003]

[Problems to be solved by the device]

 However, in recent years, due to the automation of mold replacement, the mold transfer device has been used to automatically replace the mold on the moving bolster, and for this reason, it has been installed on the moving bolster as in the past. If the feed bar was placed on the bar cradle, there was a problem that the feed bar interfered with the automatic die replacement. The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a feed bar lift device of a transfer press that retracts the feed bar to a position where it does not interfere when the mold is replaced.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a plurality of supporting arms for supporting both ends of a divided feed bar on both sides of a moving bolster that can be freely moved in and out of a press body, and is vertically movable. The above-mentioned supporting arms can be vertically moved in synchronization with each other by a lift motor provided in a moving bolster.

[0005]

[Work]

 With the above structure, the feed bar is retracted upward when the die is replaced, so that the feed bar does not get in the way, so that the die can be automatically replaced easily.

[0006]

【Example】

 An embodiment of the present invention will be described in detail with reference to the drawings. In the figure, reference numeral 1 is a main body of a transfer press, which houses a moving bolster 2 which can be freely put in and taken out. Above the moving bolster 2, there are provided a pair of feed bars 3 arranged side by side in the work transfer direction (arrow A). These feed bars 3 are divided into a plurality of pieces in the longitudinal direction, and a bar connector (not shown) during operation. Are connected to each other by.

Reference numeral 4 in the drawing denotes a feed bar lift device of the present invention, which is installed on the front side of the moving bolster 2. The feed bar lift device 4 has vertically long cases 4a on both sides of the moving bolster 2, and guide rails 4b are vertically provided at the moving bolster 2 side openings of these cases 4a. .. The base ends of the pair of support arms 5 are supported by the guide rails 4b. Sprockets 6 and 7 are provided on the upper and lower parts of the case 4a, and a chain 8 is wound around these sprockets 6 and 7. It is attached to the base end.

On the other hand, an interlocking shaft 10 is rotatably supported in the front part of the moving bolster 2 in a direction parallel to the feed bar 3, and the interlocking shaft 10 is endlessly driven by a lift motor 11 mounted on the moving bolster 2. It is designed to be rotated via a chain 12 having a shape. Sprockets 13 are provided at both ends of the interlocking shaft 10. An endless chain 15 is wound between the sprocket 13 and a sprocket 14 coaxial with the sprocket 7, and the lift is provided. By rotating the chain 8 by the motor 11, the left and right support arms 5 can be vertically moved in synchronization with each other. Further, the tip ends of the respective support arms 6 project inward of the press body 1 so that both ends of the feed bar 3 divided by the dividing line 3a can be supported from below. In the figure, 16 is a bar cradle that is provided upright on the rear side of the moving bolster 2 and is the same as the conventional bar cradle, and 17 is a slide.

Next, the operation will be described. While the press main body 1 is in operation, each feed bar 3 is at the solid line position in FIG. 1, and is driven in a three-dimensional direction by a driving mechanism (not shown), so that a work (not shown) is shown. Are conveyed in the work conveying direction A. Next, when automatically changing the mold on the moving bolster 2 by the mold transfer device (both not shown) of the automatic mold changing device, the support arm 5 is set to substantially the same height as the upper surface of the bar pedestal 16. In this state, the feed bars 3 are forcibly unclamped and forcibly lowered, and the feed bars 3 are separated from the dividing line 3a at this position, and a part of the feed bar 3 is supported by the support arm 5 and the bar pedestal 16. Place on. Then, in this state, the chain 8 is rotated by the lift motor 11 to raise each support arm 5 to the imaginary line position in the figure, and the feed bar 3 on the support arm 5 is retracted to a position where it does not interfere with the die change. Let

After that, the die transfer device is used to transfer the die on the moving bolster 2 and the die to be used next to exchange the die. After the replacement of the dies, the feed bar 3 is lowered to the original position together with the support arm 5, and then the feed bar 3 is connected in the reverse operation to the above. The fingers are replaced by the automatic finger replacement device. It is possible to automatically perform in the press main body 1 by using together. In the above, the case of exchanging the mold in the press main body 1 has been described, but the moving bar 2 takes the feed bar 3 out of the press main body 1 together with the mold, and the mold is exchanged by the external setup. In this case as well, by raising the feed bar 3 by the feed bar lift device 4 in the same manner as described above, the feed bar 3 does not get in the way during the die replacement.

[0011]

[Effect of the device]

 As described in detail above, this invention allows the feed bar to be retracted to an unobtrusive position during automatic die replacement, so that automatic die replacement can be performed without any support and the feed bar lift Since the device is installed on the moving bolster, the feed bar can be retracted inside and outside the press body, so it is highly versatile. Also, by retracting the feed bar inside the press body, the mold can be adjusted inside the press body without being disturbed by the feed bar, improving workability and using the automatic finger changer. Replacing the fingers in the press body is economical because it eliminates the need for a spare feed bar.

[Brief description of drawings]

FIG. 1 is a plan view of a transfer press equipped with a feed bar lift device according to an embodiment of the present invention.

FIG. 2 is a front view of a transfer press equipped with a feed bar lift device according to an embodiment of the present invention.

FIG. 3 is a side view of a feed bar lift device according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Press body, 2 ... Moving bolster, 3 ... Feed bar, 5 ... Support arm, 11 ... Lift motor.

Claims (1)

[Scope of utility model registration request] 1. A feed bar 3 which is divided on both sides of a moving bolster 2 which can be freely moved in and out of a press body 1.
A feed bar lift device for a transfer press in which a plurality of support arms 5 for supporting both end sides of the above are provided so as to be vertically movable, and the support arms 5 are vertically movable in synchronization with each other by a lift motor 11 provided in a moving bolster 2.