JP2748096B2 - Jig changing device for work suction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work suction jig exchanging apparatus provided on a feed bar of an industrial robot for sequentially feeding works to dies arranged in a press machine in accordance with a work transfer pitch. This is a suitable device for attaching and detaching the work suction jig to and from the feed bar with one touch.

[0002]

2. Description of the Related Art Conventionally, an industrial robot for sequentially feeding a work to a plurality of dies of a press machine has a feed bar provided behind a die arranged in the press machine, and a plurality of works corresponding to the dies. The suction jig had its base fixed to the feed bar. Further, since the work to be processed by the press machine is various, and it is necessary to change the work suction jig according to the shape of the work, the base of the work suction jig and the fixing part of the feed bar are not shown in FIG. The structure shown in FIG.

That is, a block 2 fixed to the base of a work suction jig is provided on the front surface of a feed bar 1 shown in FIG.
When the block 2 is pressed and fixed with bolts 4 screwed into the holder 3 from the side, the vacuum air passage 5 provided in the holder 3
And a passage leading to a work suction jig (not shown).

Further, a connector 6 for connecting an electric circuit required for a work suction jig has been manually inserted into a connector receiver 7 provided on the feed bar 1 and fixed. further,
Vacuum air generator 8 and connector receiver 7 connected to passage 5
Terminals 9 for wiring to the feed bar 1 are provided.

[0005]

The apparatus according to the prior art described above is required to be replaced each time the workpiece suction jig is replaced.
Loosen the bolt 4 shown in FIG.
It is necessary to remove the work suction jig block 2 from the holder 3 and then attach the necessary work suction jig in the reverse order. There are drawbacks, such as that it takes a lot of time and effort to perform all the tools.

SUMMARY OF THE INVENTION An object of the present invention is to provide a work suction jig exchanging apparatus which can remove and attach a work suction jig easily and easily with a single touch.

[0007]

In order to achieve the above-mentioned object, a feed bar is provided on the front surface of the feed bar for each work conveyance pitch.
A holder having a vertical groove at the center of the upper surface and a vertical groove with a depth up to the rear surface of the groove in the middle of the front, a connector receiver provided on the front of the holder, and a piston built in the holder. Cylinders that appear and retract in the vertical groove, a passage that faces the piston, connects the side surface of the holder and the vertical groove, and supplies vacuum air from the outside, and the vertical groove of the holder fixed to the base of the work suction jig The convex part of the block, which has a convex part that fits the groove in the upper part, is placed on the front part of the upper surface of the holder, and when the block is fitted in the vertical groove, it faces the connector receiver, and from this state the block is And a block provided with a hole for receiving the tip of the piston and a vacuum passage that is air-tightly connected to the passage to constitute a work suction jig changing device.

[0008]

According to the present invention, when the block of the work suction jig is placed on the holder provided on the feed bar and pushed in, and fitted into the vertical groove of the holder, the connector is connected by the operation. After attaching a plurality of jigs for work suction to the feed bar, compressed air is supplied to fix the block with the piston of the cylinder, and the vacuum passage can be airtightly connected to the vacuum generator.

Conversely, if the compressed air is exhausted and the piston is immersed, the work suction jig can be removed from the feed bar. That is, the work suction jig can be attached to and detached from the feed bar with one touch.

[0010]

1 shows a work suction jig changing apparatus 10 according to the present invention, wherein (a) is a plan view and (b) is a front view.

The work suction jig changing device 10 includes a holder 12 provided on the front surface of the feed bar 11, a connector receiver 13 provided on the front left side of the holder 12 facing forward, and a work suction jig 14. It consists of a block 15 fixed to the base and a connector 16.

The holder 12 has a rectangular shape whose front face is horizontally long.
A left-right groove 17 is provided at the center of the upper surface in the front-rear direction, and a vertical groove 18 is provided at the middle part of the front surface in the left-right direction, so that the bottom of the vertical groove 18 and the rear surface of the groove 17 are aligned. On the left side of the vertical groove 18 of the holder 12, a left-right cylinder 19 is provided at the center of the vertical groove 18 at the center in the vertical direction, and the piston 20 is made to protrude into the vertical groove 18 with compressed air. I try to pull in with a spring.

The tip of the piston 20 has a conical corner. A right and left side of the vertical groove 18 of the holder 12 is provided with a vacuum air passage 21 facing left and right corresponding to the piston 20, and a right end of the passage 21 is connected to a vacuum generator 22 provided on a front surface of the feed bar 11. doing.

The block 15 fixed to the base of the work suction jig 14 has a size adapted to the vertical direction, left and right, and depth of the vertical groove 18. It is protruding. Therefore, the upper surface shape is T-shaped.

The block 15 is connected to the vertical groove 18 and the groove 17.
When the piston 2
A hole 24 is provided to which the leading end of the block 0 fits, and a vacuum passage 25 which is opened on the right side of the block 15 and can be airtightly connected to the passage 21 by a seal member is provided.

Accordingly, when compressed air is supplied to the cylinder 19 to cause the piston 20 to protrude, the piston 20
The block 15 is pressed to the right and fixed, and the vacuum passage 25 is connected to the passage 21 in a gas-tight manner. It is piped from the vacuum passage 25 to the work suction jig 14.

The work suction jig 14 includes a connector receiver 1.
The connector 16 to be connected to 3 is mounted via a bracket 26. The connector 16 is held in a vertically long groove (not shown) of the bracket 26 so as to be able to move up and down, and the block 15 puts the convex portion 23 on the front upper portion of the holder 12 and slides it into the vertical groove 18. , And the connector 16 faces the connector receiver 13.

Accordingly, from this position, the block 15 is moved rearward as indicated by the arrow 32 so that the convex portion 23 slides on the upper surface of the holder 12, and when the convex portion 23 coincides with the groove 17, the connector 16 receives the connector receiving portion. 13 and the projection 2
3 falls into the groove 17 by its own weight, and the connector 16 moves relatively upward along the long groove of the bracket 26, and the attachment of the work suction jig 14 to the feed bar 11 is completed.

The connector receiver 13 is electrically connected to a terminal of the foot bar 11 and the connector 16 is electrically connected to a required portion of a work suction jig 14 by wiring.

FIG. 2 shows a press machine 28 provided with an industrial robot 27 on which the work suction jig changing device 10 is mounted.

The industrial robot 27 is provided at the rear of a die (not shown) in which the feed bars 11 are arranged in a row on the press machine 28, and gives a required conveying motion of the feed bars 11 by the drive unit 27A. The work is supplied to the press machine 28 from the blank feeder 29 by the feed bar 11, and the coil material is supplied from the uncoiler 30 by the coil feeder 31.

FIG. 3 shows a state in which the work suction jig 14 is attached to the front surface of the feed bar 11.

The work suction jig 14 is provided with a required number of suction cups 14A according to the shape of the work to be conveyed.

In FIG. 4, the feed bar 11 is provided with a plurality of workpiece suction / wear jig changing devices 10 at intervals of the dies in the dies row, that is, at intervals of the workpiece conveyance pitch. The reason why the holder 12 is provided in the middle is to replace and attach the work suction jig 14 when the mold interval is slightly changed.

[0025]

As is clear from the above description, according to the present invention, the work suction jig can be attached and detached with one touch to the feed bar of the industrial robot for transferring the work by the press machine, and the holder can be attached to and detached from the cylinder of the holder. Since the supply and discharge of the compressed air can simultaneously fix and release all the work suction jigs by remote control, the work of replacing the work suction jig is facilitated and the work efficiency is improved. In addition, it has a simple structure and can be expected to be superior in price.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, wherein (a) is a plan view,
(B) is a vertical sectional front view of the main part.

FIG. 2 is a diagram showing an industrial robot and the like attached to a press machine for implementing the present invention.

3A and 3B show an example of a work suction jig, wherein FIG. 3A is a plan view and FIG.

FIG. 4 shows an example of a feed bar according to the present invention;
(A) is a plan view, (b) is a side view.

FIG. 5 is a front view of a main part showing a conventional example.

[Explanation of symbols]

Reference numeral 10 denotes a work suction jig changing device, 11 denotes a feed bar, 12 denotes a holder, 13 denotes a connector receiver, 14 denotes a work suction jig, 14A denotes a suction cup, 15 denotes a block, 16
Is a connector, 17 is a groove, 18 is a vertical groove, 19 is a cylinder,
20 is a piston, 21 is a passage, 22 is a vacuum generator, 23
Is a convex portion, 24 is a hole, 25 is a vacuum passage, 26 is a bracket, 27 is an industrial robot, 27A is a drive unit,
8 is a press machine, 29 is a blank feeder, 30 is an uncoiler, 31 is a coil feeder, and 32 is an arrow.

Claims (1)

(57) [Claims] In a work suction jig changing device, a plurality of jigs are provided on a feed bar of an industrial robot for sequentially feeding a work to dies arranged in a press machine in accordance with a work transfer pitch. A holder provided on the front surface, having a vertical groove at the center of the upper surface and a vertical groove having a depth up to the rear surface of the groove at an intermediate portion of the front surface, a connector receiver provided on the front surface of the holder, A cylinder which is provided in a holder and allows a piston to protrude and retract from the vertical groove; a passage which faces the piston of the cylinder and communicates between the side surface of the holder and the vertical groove and through which vacuum air is supplied from the outside; A block which is fixed to the base and is fitted with the vertical groove, and has a convex portion which fits the groove protruding at the top, and is provided movably up and down at the base of the work suction jig; Of the holder A connector which is placed on the front surface, faces the connector receiver when the block is fitted into the vertical groove, moves the block backward, and is connected when the convex portion matches the groove, and the connector A work suction jig changing device, comprising: a hole for receiving the tip of the piston; and a vacuum passage which is air-tightly connected to the passage.