JPS5935308Y2 - Finger attachment device for press work conveyor - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a finger attachment device for a press work conveying device.

In general, a press work transport device transports pushes and sweeps between press machines provided at predetermined intervals.

One of the press work conveyance devices is equipped with feed bars on both sides that move with a predetermined motion, and the feed bars hold the work and have fingers equipped with detection means for detecting the presence or absence of the work at predetermined intervals. Some types are equipped with fingers that can be replaced depending on the size of the workpiece.

Conventionally, with this device, the finger was integrally attached to the feed bar together with the detector, or the finger with the detector attached was fixed to the feed bar with bolts and the detector was connected to the general-purpose terminal box and metal outlet. When replacing the fingers depending on the size of the workpiece, the former requires replacing the entire feed bar, which is extremely troublesome; Although it can be replaced, each time the detector is replaced, the detector and general-purpose terminal box are connected using a metal outlet, so the worker may forget to connect the outlet, or it may come off during work, or there may be a poor connection. There was a drawback to doing so.

Therefore, in view of this, the present invention has a structure in which a finger holder is attached to the feed bar, and the finger into which the workpiece detection rod is fitted is fixed to the finger holder with a lock pin. It is an object of the present invention to provide a finger attachment device for a press workpiece conveying device that eliminates the above-mentioned drawbacks by relating the probe of the detector to the workpiece detection rod through the notch.

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention will be explained about an Example based on drawing.

Feed bars 1 move in the transport direction t of the workpiece 2 by a predetermined motion, and are arranged on both sides of a plurality of molds arranged in parallel in a press machine (not shown).

Reference numeral 3 denotes a finger holder which is disposed at a predetermined interval on the feed bar 1 and into which the rear part of the finger 4 is inserted, and is a holder member having a bottomed hole 6 at the rear part of a fixed cylinder 5 fixed to the feed bar 1. 7 is fitted, and a window-like notch 8 is bored in the rear side thereof.

Reference numeral 9 denotes a circumferential recess 11 in which a cushion bolt 10 axially provided in the bottomed hole 6 is fitted and forms a part of the cam surface.
The cam member is always biased forward by a spring 12 interposed between the holder member 7 and the cam member 9.

Further, the cam member 9 and the cushion bolt 10 are such that the engagement recess 13 of the cam member 9 and the seven flange 14 of the cushion bolt 10 engage with each other, so that even if the finger 4 is pulled out, the cam member 9 and the cushion bolt 10 are not maintained. In this case, the cam member 9 is not released from the finger holder 3.

The finger 4 is fitted into the finger holder 3,
Further, a finger shaft portion 16 having an axial through hole 15 bored therein, a fork-shaped finger base portion 17 fixed to the finger shaft portion 16, and a finger base portion 17 attached to the finger base portion 17 to clamp the workpiece 2. Finger holding part 1
It consists of 8.

Reference numeral 19 denotes a workpiece detection rod for confirming whether or not the workpiece 2 is clamped by the finger 4, and is screwed into a movable shaft 20 that is slidably inserted into the finger shaft portion 16 and the front part of the movable shaft 20; Contact member 2 whose tip is bent downward
Consists of 1.

Reference numeral 22 denotes a plate extending forward from the lower end of the finger shaft portion 16, and supports the abutment member 21 by a guide member 23 provided at the tip thereof.

A stopper 24 is attached to the front part of the movable shaft 20 with a bolt 25, and restricts the backward movement of the workpiece detection rod 19.

A lock pin 26 fixes the finger 4 fitted into the finger holder 3 (fixed cylinder 5), and is engaged with the engagement hole 27 of the finger shaft 16 through the through hole 15 of the fixed cylinder 5.

A bracket 28 supports the lock pin 26, and a spring 30 interposed between the bracket 28 and the 7 flange 29 of the lock pin 26 always urges the lock pin 26 downward.

On the other hand, the lock pin 26 is configured to be engaged with and disengaged from the finger 4 by grasping a grip portion 31 screwed into a portion protruding upward through the bracket 28 and moving the lock pin 26 up and down. .

Reference numeral 32 denotes a limit switch provided corresponding to each finger 4, and the contactor 33 of the limit switch 32 is attached so as to come into contact with the cam surface of the cam member 9 through the notch 8.

Note that 34 is a retaining 7 flange provided at the rear end of the movable shaft 20, and 35 is a general-purpose terminal box attached to the feed bar 1.

Next, to explain how to replace the finger 4 in the above device, first, disengage the finger 4 to be replaced from the lock pin 26 by grasping the grip 31 at the top of the lock bin 26 and pulling it upward. , the finger 4 and the workpiece detection rod 19 are removed integrally from the finger holder 3.

Next, with the lock pin 26 pulled up, a new finger 4 corresponding to the shape of the work 2 and the work detection rod 19 are integrally inserted into the finger holder 3, and then the grip portion 31 of the lock pin 26 is inserted. When released, lock pin 26
The distal end thereof is fitted into the engagement hole 27 and cannot be removed.

In summary, the present invention arranges a feed bar on both sides of a plurality of molds arranged in parallel on a press machine, and a plurality of sets of fingers and workpiece detection rods are arranged in opposition to this feed bar.
This is an improvement of the finger attachment device of the press work transfer device, which holds the workpiece with the fingers as the feed bar moves in three dimensions and sequentially transfers it to the mold for the next process. The fingers can be replaced without involving the electrical connections.

In this invention, as described above, a finger holder is attached to the feed bar, and the finger into which the workpiece detection rod is inserted is removably fixed to the finger holder with a lock pin, so that it can be adjusted according to the size of the workpiece. This has the excellent effect of making it easier to replace the fingers and shortening the replacement time.

[Brief explanation of drawings]

The drawings illustrate the embodiment of the present invention, and FIG. 1 is a sectional plan view of the main part of the finger attachment device, FIG. 2 is a sectional side view of the same, FIG. 3 is a front view of the same, and FIG. The attachment is a partially omitted plan view of the press work conveyance device showing the state. 1... Feed bar 2... Work,
3...Finger holder, 4...Finger 5...Fixed cylinder, 6...Bottomed hole, 7...Holder member, 8... Notch, 9... Cam member, 11... Surrounding recess, 12... Spring, 19... Work detection rod, 26...Lock pin, 32...
...switch, 33...toucher.

Claims (1)

[Scope of utility model registration request] A feed bar is placed on both sides of multiple molds installed in parallel on a press machine, and multiple pairs of fingers and workpiece detection rods are installed on this feedbar in opposition, and the workpiece is held by the fingers as the feedbar moves in three dimensions. In the press work transfer device, the feed bar is provided with a finger holder having a bottomed hole into which the rear part of the finger is inserted, and the rear side of the finger holder is A cam member is inserted into the bottomed hole via a spring, the cam surface is exposed to the notch, and the probe of the detector is brought into contact with the cam surface. The workpiece detection rod is slidably inserted into the through hole formed at the rear of the finger, the finger is inserted into the finger holder, the finger and finger holder are fixed with a lock pin, and the lock pin is released. A finger attachment device for a press work conveyance device, characterized in that the finger and the work detection rod can be integrally removed.