JPH0344352Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a finger mounting device used in a transfer press.

<Prior Art> A transfer press is equipped with a transfer feed device for sequentially conveying workpieces to a press location. The transfer feeding device has a feed bar for conveying a workpiece, and a finger attached to the feed bar, and the fingers used correspond to the workpiece.

And, as a conventional finger attachment device,
For example, as in the finger attachment device of a press work transfer device shown in Japanese Utility Model Application Publication No. 55-111639, a feed bar is arranged on both sides of a plurality of molds installed in parallel in a press machine, and a finger and a work detection rod are attached to the feed bar. In a press work conveyance device, a plurality of pairs of the feed bars are arranged in opposition, and as the feed bar moves three-dimensionally, the work is held by the fingers and sequentially conveyed to the mold for the next process. A finger holder is provided with a bottomed hole into which the finger is inserted, a window-like notch is provided on the rear side of the finger holder, a cam member is inserted into the bottomed hole via a spring, and the cam member is inserted into the notch. With the cam surface exposed, the probe of the detector is brought into contact with the cam surface, and the workpiece detection rod is slidably inserted into the through hole formed at the rear of the finger. There is a device that is fitted into a holder, the finger and the finger holder are fixed with a lock pin, and the finger and workpiece detection rod can be removed integrally by releasing the lock pin.

<Problems to be Solved by the Invention> However, in the finger attachment device disclosed in the above-mentioned Utility Model Publication, the finger shaft portion 16 - the number in the drawing contained in the above-mentioned publication. When engaging or disengaging the fixed cylinder 5 with the same below, it is necessary to hold the finger shaft with one hand and continuously pull up the lock pin 26 with the other hand, which makes the work difficult because both hands are occupied. The drawback is that it is difficult.

The present invention has been devised in view of the above-mentioned facts, particularly with the purpose of providing a finger mounting device for a transfer press that allows fingers to be replaced easily and quickly.

<Means for Solving the Problems> In order to achieve the above object, the finger mounting device of the transfer press of the present invention has a mounting hole in the upper surface of the finger which is equipped with a workpiece detection arm in the cup portion attached to the tip, and , a support body into which the finger is inserted is provided on the feed bar side, and a locking member inside thereof that is constantly pressed by a spring and whose one end can be fitted into a mounting hole of the finger, and a ring-shaped upper end of the locking member. The operating member is rotatably attached, and a split groove is formed in the support body through which the ring-shaped operating member enters and exits.

<Operation> When attaching the finger to the finger support mechanism, first pull up the ring-shaped operating member upward against the spring, and then rotate it approximately 90 degrees to attach the upper end of the groove, that is, the finger support mechanism. It is located on the upper surface of the protrusion in the mechanism. As a result, the locking member is moved upward and supported at the detached position, and thus the locking member is held in a state in which one end thereof is retracted from the guide recess in the finger support mechanism, which will be described later.

Next, when the other end of the finger body of the finger is inserted through the guide recess, the stopper of the finger comes into contact with the support body, and the finger is reliably positioned at a predetermined mounting position. As a result, the plug, which is one of the connecting fittings provided on the other end of the finger body, and the receptor, which is the other connecting fitting provided on the feed bar, are automatically connected to each other.

Thereafter, the ring-shaped operating member is rotated and fitted into the groove of the support body. As a result, the locking member is lowered to the locking position by the action of the spring, and the lower end of the locking member is inserted into the attachment hole of the finger body. As a result, the finger is locked and attached to the locking member.

To remove the finger from the finger support mechanism, operate the ring-shaped operating member as described above to pull up the locking member, rotate the operating member to position it at the upper end of the split groove, and then move the finger. , the connection of the connecting fittings is released and the fingers can be removed.

<Example> Fig. 1 shows a part of a transfer press, which is equipped with a fixed lower part (not shown) and a movable upper part (not shown), as is well known. The molds 2a and 2b are fixed, and the movable upper part has a
An upper mold (not shown) corresponding to each of the lower molds 2a and 2b is fixed.

The transfer press is equipped with a transfer feeding device 4 that conveys the workpiece, and the feeding device 4 is equipped with a pair of feed bars 6, 6 disposed on both sides of the lower molds 2a and 2b, and the feed bar. A plurality of fingers (transfer fingers) 8 (in the example of FIG.
). The feed bar 6 is caused to reciprocate in the directions shown by arrows 14 and 16 by a driving force from a driving source (not shown). At this time, when the feed bar 6 is moved in the direction shown by arrow 16, the finger 8 acts on the workpiece and causes it to move in the direction indicated by arrow 14, so that the finger 8 separates from the workpiece, thus causing the workpiece to move only in the direction indicated by arrow 16.

Next, referring to FIGS. 2 and 3, the finger 8 and the finger attachment device to which the finger 8 is attached will be described. The finger 8 has a finger main body 18 and a cup portion 20 attached to the tip thereof to hold a workpiece. The finger main body 18 is composed of a pipe member having a rectangular cross section, and the cup portion 20 has a bottom wall 20a and a side wall 2.
0b and 20c, and when the workpiece 22 is conveyed in the direction shown by the arrow 16 (FIG. 1), the workpiece 22 is placed on the bottom wall 20a as shown in FIG. The workpiece 2 is located inside the tip of the finger body 18.
A detection means 23 such as a micro switch for detecting 2 is fixed, and a detection arm 23a from the detection means 23 penetrates the side wall 20b of the cup part 20, projects into the cup part 20, and extends in the vertical direction. One end of the detection part 23b is movably received in a long hole 24 formed in the bottom wall 20a of the cup part 20, as shown in FIG. Detection means 23
The detection unit 23b detects that the workpiece 22 is located at the cup portion 20.
When it is placed in a predetermined manner, it is moved from the non-operating position shown by the solid line in FIGS. 2 and 3 to the working position shown by the phantom line in FIG. A plug 26 having a connection terminal is further fixed to the other end of the finger main body 18, and the plug 26 and the detection means 2
3 by a wire 28 passing through the body 18 of the finger 8. Furthermore, a circular attachment hole 30 and a stopper 32 are provided on the upper surface of the finger body 18.

The finger 8 described above is detachably attached to the finger support mechanism 34 of the finger attachment device. The finger support mechanism 34 includes a support body 38 fixed to the upper surface of the feed bar 6 by a mounting screw 36, and a locking member 40 mounted in the support body 38 so as to be rotatable and movable up and down. . A rectangular guide recess 4 corresponding to the cross-sectional shape of the finger body 18 is provided on the lower surface of the support body 38.
2 is formed to communicate with the upper recess 50, and the locking member 40 is formed on the upper surface of the upper protrusion 38a.
A split groove 44 is formed which has a circular groove into which the groove is inserted. A flange 4 is provided at one end of the locking member 40.
6 is provided at the other end, protruding from the upper surface of the protrusion 38a through the circular groove of the split groove 44,
A ring-shaped operating member 48 is rotatably mounted. Further, the flange 46 of the locking member 40
A coil spring 5 is provided between the
2 is interposed, and constantly presses the locking member 40 downward in FIG.

A receptor 54 is further provided on the upper surface of the feed bar 6 to which the plug 26 fixed to the finger body 18 is connected. In the illustrated example, the receptor 54 is connected to one end of the cord 60.
is attached to a support member 56 made of a flexible material such as rubber, and the support member 56 is fixed to the feed bar 6 by a mounting screw 58.

Next, the operation of the finger attachment device having the above configuration will be explained.

To attach the finger 8 to the finger support mechanism 34, first move the ring-shaped operating member 48 upward against the coil spring 52, and then rotate it approximately 90 degrees so that the upper end of the split groove 44, that is, the protrusion 38a, is rotated approximately 90 degrees. Place it on the top. In this way, the locking member 4
0 is moved upward and supported at the release position shown by the two-dot chain line in FIG. 3, and thus the locking member 40
One end protruding from the flange 46 of the guide recess 42 is recessed. Next, when the other end of the finger body 18 of the finger 8 is inserted through the guide recess 42, the stopper 32 of the finger 8 comes into contact with the support body 38, and the finger 8 is reliably positioned at a predetermined mounting position. As a result, the plug 26 provided at the other end of the finger body 18 and the receptor 54 provided on the feed bar 6 are automatically connected to each other. Thereafter, the ring-shaped operating member 48 is rotated and fitted into the groove 44 of the support body 38. As a result, the locking member 40 is lowered by the action of the coil spring 52 to the locking position shown by the solid line in FIG. The lower end of the member 40 is inserted into the attachment hole 30 of the finger body 18. As a result, the finger 8 is locked and attached to the locking member 40.

The cup portion 20 of the finger 8 is connected to the workpiece 2
2, the detection arm 23a is pushed by the workpiece 22, which causes the detection means 23
emits a signal and is coupled via said wire 28, plug 26, receptor 54 and cord 60 to, for example, a control device.

To remove the finger 8 from the finger support mechanism 34, operate the ring-shaped operating member 48 to pull up the locking member 40, rotate the operating member 48 to position it at the upper end of the split groove 44, and then remove the finger 8. If you move it to the right in Figure 3, the plug 26
The connection between the finger 8 and the receptor 54 is released, and the finger 8 can be removed.

<Effects of the invention> As described above, the finger mounting device for the transfer press according to the present invention has a mounting hole in the upper surface of the finger that is equipped with a workpiece detection arm in the cup portion attached to the tip, and also has the above-mentioned mounting hole on the feed bar side. The support body is provided with a support body into which the finger is inserted, and a locking member that is constantly pressed by a spring inside the support body and one end of which can be fitted into the attachment hole of the finger, and a ring-shaped operating member is rotated at the upper end of the locking member. In addition to being freely attachable, the support body is formed with a split groove through which the ring-shaped operating member enters and exits, so that when the finger is to be removed from the finger support mechanism, the ring-shaped operating member is pulled and the split groove is inserted at the upper end position of the split groove. By simply rotating the engaging member at right angles to the groove, the engaging member can be held in a state released from engagement with the finger, and when the finger is engaged with the finger support mechanism in this state,
After the finger is correctly fitted into the guide recess of the finger support mechanism, the finger can be easily engaged with the engagement member by simply rotating the ring-shaped operating member along the groove in the opposite direction. Therefore, compared to the device shown in the above-mentioned Japanese Utility Model Publication No. 55-111636, in which the lock pin is grasped with one hand and the lock pin is pulled up, the finger shaft is engaged and released with the other hand. This has the effect that operations such as when the shaft is tightly fitted into the fixed cylinder (when removed), and when adjusting the posture of the finger shaft and aligning it with the lock pin (when inserted) can be easily performed with both hands.

[Brief explanation of drawings]

FIG. 1 is a simplified plan view showing a part of a transfer press equipped with a finger and its mounting device according to the present invention, FIG. 2 is a plan view showing a finger and a finger support mechanism, and FIG. FIG. 2 is a cross-sectional view taken along the - line in FIG. 2; 4...Transfer feed device, 6...Feed bar, 8...Finger, 18...Arm body,
20... Cup portion, 22... Workpiece, 23...
Detection means, 23a...Detection arm, 26...Plug, 34...Finger support mechanism, 38...Support body, 40...Locking member, 48...Ring-shaped operating member, 54...Receptor.

Claims (1)

[Scope of utility model registration request] A mounting hole is drilled on the top surface of the finger with a workpiece detection arm inside the cup attached to the tip, and
The feed bar side is provided with a support body into which the finger is inserted, and a locking member inside thereof that is constantly pressed by a spring and whose one end can be fitted into the mounting hole of the finger, and a ring-shaped operation member is provided at the upper end of the locking member. A finger mounting device for a transfer press, wherein the member is rotatably attached and a split groove is formed in the support body through which the ring-shaped operating member enters and exits.