JPH0244900Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a workpiece conveying device for conveying a workpiece or a material for forming a workpiece (hereinafter simply referred to as a workpiece, etc.) in a transfer press. This invention relates to an angular displacement device for a work to be displaced.

(Prior Art) For example, when performing multi-step processing using a transfer press, there are cases where a workpiece or the like must be rotated by a predetermined angle during the processing. The conventional method of angular displacement of a workpiece is to attach a cam follower 2 to a finger 1 and install a cam plate 4 on the side of the feed bar 3, as shown in FIG. When setting the cam follower 2
rides on the cam plate 4, causing the finger 1 to rotate around the rotating shaft 5.

(Problem to be solved by the invention) However, the angular displacement device H
It can be used interchangeably with other items depending on the type of item, but
When the cam follower 2 and the finger 1 are in a fixedly connected state, the cam follower 2 is connected to the cam plate not only when setting the angle displacement device H but also when replacing it (especially when replacing it automatically). 4, and there is a risk that the angular displacement device H may be damaged.

Also, normally, the cam plate 4 contacts and supports the cam follower 2 when the cam follower 2 moves in the workpiece conveyance direction, but the finger 1 unclamps the workpiece, etc., and the cam plate 4 stands upright in the workpiece conveyance direction. Since the cam plate 4 is in contact with the cam plate 4 even when escaping in the direction of movement (hereinafter referred to as lateral direction) or retreating along the transport direction of the workpiece, it is not necessary to use a large cam plate 4 with an area at least within the range in which the cam follower 2 operates. However, it is also disadvantageous in terms of cost.

The present invention was developed by focusing on the above-mentioned drawbacks and problems, and allows the angular displacement device to be set without damage when setting it or automatically replacing it, and also reduces the size of the cam plate. An object of the present invention is to provide an angular displacement device for a workpiece of a transfer press.

(Means for Solving the Problems) The present invention for achieving the above object includes a feed bar, a rotary shaft rotatably attached to the fiber, and a rotary shaft provided at one end of the rotary shaft to support a workpiece, etc. a cam follower provided on a side opposite to the finger of the rotating shaft; and a cam plate that operates the cam follower as the feed bar moves and rotates the rotating shaft via the cam follower; A forward path for transporting the feed bar to convey a work, etc., an auxiliary movement for moving the feed bar to support or release the work, and a backward path for retracting the feed bar are carried out cyclically and at least two-dimensionally. In this transfer press, the cam plate is provided only in the range in which the cam follower moves forward and backward, and the cam follower and the rotating shaft are connected via a support rod, and the support rod and the cam follower are connected to each other in the range in which the cam follower moves back and forth. This is an angular displacement device for a workpiece of a transfer press, characterized in that it is articulated so that it does not bend in the direction of movement, but can bend in the direction of auxiliary movement.

(Function) In this invention, when setting, etc.,
Even if the cam follower and the cam plate collide, not only can the cam follower be bent and damaged, but there is no adverse effect on the normal cam action, and the cam plate itself can be made smaller.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of essential parts showing an embodiment of the present invention, and the same members as those shown in FIG. 4 are given the same reference numerals.

This angular displacement device 10 has a bearing 12 attached to a support bracket 11 fixed to a feed bar 3, supports a rotary shaft 5 by this bearing 12, and supports the inner end of the rotary shaft 5 (for holding a workpiece, etc.). A finger 1 is attached to the side end, and a support rod 13 to which a cam follower 2, etc. is attached is attached to the outer end.

The feed bar 3 has a forward path (arrow a shown in FIG. 1) for conveying the work W, etc., and an auxiliary path (shown in FIG. 1) for moving to support or release the work W etc. by the finger 1. The arrows b and d) and the backward path for retracting the feed bar 3 (arrow c shown in FIG. 1) move so as to constitute a closed cycle.

However, the movement path of the feed bar 3 does not necessarily need to be on a horizontal plane as in the illustrated embodiment, as long as it is at least two-dimensional.

As shown in FIG. 2, the finger 1 has a holding member 14 having a substantially U-shaped cross section and holding a workpiece or the like at the tip of the rotating shaft 5.

In addition, this finger 1 has a limit switch.
A SW is installed to electrically detect the state in which a workpiece, etc. is being gripped.

On the other hand, the support rod 13 has the rotating shaft 5 fixed to its base end, and a support block 15 for supporting the cam follower 2 fixed to the other end. A notch 24 is formed in the support block 15 in a direction perpendicular to the workpiece conveyance direction, and the end 2a of the cam follower 2 is inserted into the notch 16, and the support block 15 and the end 2a are pinned together. 17
It is articulated by. In other words, the cam follower 2 and the rotating shaft 5 are connected via the support rod 13, and the support rod 13 and the cam follower 2 are not bent in the forward and backward movement direction but bent in the auxiliary movement direction. It is articulated as much as possible.

Cam plate 18 with which the cam follower 2 is in contact
are provided corresponding only to the range in which the cam follower 2 moves forward and backward.

A positioning rod 19 is fixed to the inner end surface of the support block 15, and the tip of the positioning rod 19 projects so as to rest on the feed bar 3. This allows the horizontal position to be determined as a reference when the finger 1 rotates.

Next, the action will be explained.

First, after the finger 1 clamps the work W, etc., the feed bar 3 is moved in the work transport direction (first
Suppose that the robot moves in the direction of arrow a shown in the figure. With this movement, the cam follower 2 slides along the upper surface of the cam plate 18 without bending, the rotation shaft 5 rotates by a predetermined angle via the support rod 13, and the positioning rod 19
leaves the top of feed bar 3.

Due to this rotation of the rotation shaft 5, the finger 1 also conveys the workpiece W while tilting it at a predetermined angle.

When the work W moves to the next station,
The feed bar 3 moves in the lateral direction (in the direction of arrow b in FIG. 1), and the finger 1 unclamps the work W or the like. At this time, the cam follower 2 is connected to the cam plate 1.
As a result, the positioning rod 19 rotates due to its own weight and rides on the feed bar 3, and the rotation shaft 5 returns to its original state.

Next, the feed bar 1 moves in a direction opposite to the workpiece conveyance direction (in the direction of arrow c in FIG. 1).
In this case, the size of the cam plate 18 is only that required for angularly displacing the finger 1 during transport of the workpiece, and is not provided to cover the entire operating range of the cam follower 2. Therefore, the cam follower 2 which has moved away from the cam plate 18 due to the movement in the direction of the arrow b does not come into contact with the cam plate 18 when moving in the direction of the arrow c and retreats.

After retreating, the feed bar 3 moves laterally inward (in the direction of arrow d in FIG. 1) to clamp the workpiece W, etc.

In the embodiment described above, the feed bar 3 is actuated two-dimensionally, but when the feed bar 3 is actuated three-dimensionally as shown by broken line arrows e, f, and g shown in FIG. If they are connected with a pin so that they can be bent, it is possible to prevent damage during automatic setting, etc., as in the embodiment described above.

(Effect of the invention) As described above, according to the invention, in a transfer press, the cam follower can be used as a finger to bend the workpiece etc. in a direction other than the transport direction without bending it in the transport direction. Because of this connection, the attachment portion between the cam follower and the finger will not be damaged during automatic setting of the angular displacement device, and the angular displacement device can be easily replaced. Furthermore, the cam plate can also be made smaller, which is advantageous in terms of cost.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, Figs. 2 and 3 are arrow views taken along the - line and - line in Fig. 1, and Fig. 4 is a general press angle displacement device. FIG. 1...finger, 2...cam follower, 3...
...Feed bar, 5...Rotating shaft, 13...Support rod, 18...Cam plate, W...Work.

Claims (1)

[Claims for Utility Model Registration] A feed bar 3, a rotary shaft 5 rotatably attached to the feed bar 3, a finger 1 provided at one end of the rotary shaft 5 to support a work W, etc. It has a cam follower 2 provided on the opposite finger side of the shaft 5, and a cam plate 18 that operates the cam follower 2 as the feed bar 3 moves and rotates the rotating shaft 5 via the cam follower 2, A forward path in which the feed bar 3 transports a work W, etc., an auxiliary movement in which the finger 1 moves to support or release the work, and a backward path in which the feed bar 3 is moved backward are cyclical and at least two-dimensional. In the transfer press, the cam plate 18 is provided only in the range in which the cam follower 2 moves forward and backward, and the cam follower 2 and the rotating shaft 5 are connected via the support rod 13.
The angle of the workpiece of a transfer press characterized in that the support rod 13 and the cam follower 2 are jointed so that they are not bent in the forward and backward movement direction but can be bent in the auxiliary movement direction. displacement device.