JPH0237466Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a moving device for positioning a workpiece in a plate processing machine or the like.

[Prior art]

For example, in a plate material processing machine such as a turret punch press, a dedicated moving device for feeding the plate material to be processed, that is, a workpiece, is often attached to a positioning device using a clamp or a stopper. This dedicated moving device consists of a rubber pad for pressing and moving the workpiece that presses the workpiece on the workpiece table, which has a large number of freely rotatable bodies such as so-called free bears arranged on a horizontal plane, a vertical cylinder for pressing the pad, and a rubber pad for horizontally moving the pad. Most of them consist of a horizontal cylinder for operation. A spring is interposed in the mounting portion of the rubber pad, and the operations of both cylinders are positively correlated and sequence controlled.

[Problem that the invention attempts to solve]

Although the conventional positioning moving device has a relatively simple structure, it is extremely difficult to combine the separate operations of both the vertical and horizontal cylinder devices to achieve smooth movement relative to the workpiece.
In other words, force distribution, length of operation time, timing of synchronization, etc., subtly influence each operation of both cylinder devices, and these conditions are likely to be disturbed by repeated operations, and adjustment of these conditions requires great skill and is complicated. It's a lot of work.

Therefore, the object of this invention is to provide a workpiece moving device that integrates reciprocating drive means such as a cylinder device into one, making adjustment operations extremely easy.

[Means for solving problems]

In view of the conventional problems mentioned above, the present invention
A loading device is provided above a table that supports a workpiece in a horizontally movable manner, and a shoe supported by the loading device in a horizontally movable manner is provided with a pad at its tip that can freely come into contact with the upper surface of the workpiece. The loading device is provided with a reciprocating actuator that is pivotally supported by a bell crank comprising one arm that is substantially horizontal and the other arm that is substantially vertical, and that reciprocates in the same direction as the direction of movement of the shoe. The reciprocating device and the other arm of the bell crank are connected together.

[Effect]

With the above configuration, in the present invention, when an attempt is made to cause the shoe to reciprocate using the reciprocating device, the bell crank is always operated, and the pad is moved up and down prior to movement of the shoe. Therefore, according to the present invention, the workpiece can be pressed and moved by the pad, and the pad can be released after the workpiece has been moved with an extremely simple structure.

〔Example〕

Next, one embodiment of the present invention will be described based on the drawings. Fig. 1 is a side view of the workpiece moving device of the present invention, Fig. 2 is a sectional view taken along the - arrow in Fig. 1, and Fig. 3 is a modified version of the device shown in Fig. 1 applied to workpiece positioning in a turret punch press. A plan view of the case is shown.

A workpiece 1 is placed on a table 5 of an appropriate plate processing machine, which is equipped with a large number of freely rotatable bodies 3 such as free bears so that it can be easily horizontally moved. A clamp 9 for positioning and clamping one end edge 7 of the workpiece 1 is set at a predetermined position on the table 5. A rubber pad 11 is moved horizontally to press one end edge 7 of the workpiece 1 against this clamp 9.
is provided. The rubber pad 11 is pivotally supported by the tip of one arm 15 of the bell clamp 13 above it, which is oriented in a substantially horizontal direction, so that the pad surface is substantially horizontal. An intermediate portion of the bell crank 13 is pivotally supported on a horizontal shaft 17 via a needle bearing 19. . Therefore, the one arm 15
The distal end of the arm 21 can swing substantially vertically, and the other arm 21 is arranged with its distal end facing substantially vertically, so that it can swing horizontally. The horizontal shaft 17 is attached to a shoe 25 in a linear guide mechanism 23 provided in a direction parallel to the horizontal movement direction of the workpiece 1,
The shoe 25 slides within a guide 27 having a trapezoidal cross-section groove with a liner, a so-called dovetail groove, while maintaining a sliding friction greater than the friction when the bell crank 13 rotates. The other end of the arm 21 of the bell crank 13 is pivotally supported by a horizontal shaft 31 at one end of a connecting rod 29 serving as a driving rod side member. The connecting rod 29 is arranged substantially horizontally, and the other end is suitably connected to a piston rod 35 of an air cylinder 33 as a reciprocating drive means. . In this embodiment, the linear guide mechanism 23 and the air cylinder 33 are attached to a known loading device 37 for the workpiece 1.

The air cylinder 33 is disposed substantially parallel to the horizontal movement direction of the work 1, and its stroke is slightly longer than the distance required for the movement of the work 1. Since the workpiece moving device of this embodiment is configured in this way, when the air cylinder 33 operates and the piston rod 35 starts to protrude to the left in FIG. Rotate counterclockwise. With this operation, the rubber pad 11 at the tip of one arm 15 of the bell crank 13 descends and presses against the upper surface of the workpiece 1, thereby stopping the counterclockwise rotation of the bell crank 13. On the other hand, since the air cylinder 33 continues to operate, the piston rod 35 continues to protrude. Now, since the bell crank 13 is pivotally supported by the shoe 25 of the linear guide mechanism 23 via the horizontal shaft 17, it moves linearly along the guide 27. Therefore, the rubber pad 11 naturally moves horizontally in a straight line to move the workpiece 1.
When the edge 7 of the work 1 comes into contact with the clamp 9, the work 1 stops moving, and the rubber pad 11 slightly slides on the upper surface of the work 1 until the piston rod 35 stops protruding. The above is the operation of the protruding side of the piston rod 35.

Next, when the piston rod 35 begins to move backward due to the reverse operation of the air cylinder 33, the bell crank 13 first
is rotated clockwise while remaining at the most advanced position in the above operation, and the rubber pad 11 is lifted away from the upper surface of the workpiece 1. Next, piston rod 35
As the guide 2 of the linear guide mechanism 23 retreats, the guide 2 of the linear guide mechanism 23
7, the bell crank 13 moves horizontally in the backward direction together with the shoe 25, and the piston rod 3
It returns to the position before the ejecting operation in step 5. With this, the rubber pad 11 also returns to its initial position and assumes a standby position for the next press movement operation of the workpiece 1.

During this time, the rubber pad 11 moves reliably vertically before starting horizontal movement in both the forward and backward directions, and forms an elongated rectangular locus in the reciprocating movement. This is because if the motion of the piston rod 35 allows both the rotation of the bell crank 13 alone and the horizontal movement of the shoe 25 combined with the bell crank 13, the former operation has less frictional resistance and moving mass. This is because the vertical movement of the rubber pad always occurs first. In this way, when positioning movement is performed for reliable operation, positioning accuracy is also significantly improved.

It operates as described above, and since the driving means is only one air cylinder 33, it is complicated and strange compared to the conventional combination of dedicated cylinders for pressing the rubber pad and horizontally moving it. There is no need for second-second adjustment operations. It is sufficient to slightly adjust the strength of the pressing force of the rubber pad 11 pivotally supported on one arm 15 of the bell crank 13. Specifically, this can be done extremely easily and quickly by adjusting the length of the arm 15, that is, adjusting the position of the horizontal shaft 17, or by changing the area of the rubber pad.

This invention is not limited to the one embodiment described above, but can be modified and applied in various ways. For example, as shown in FIG. 3, linear guide mechanisms 23a, 23b, bell cranks 13a, 13b, and rubber pads 11a, 1 are arranged parallel to each other at two locations for one air cylinder 33.
1b are connected to form both rubber pads 11a, 11.
b may be operated at the same time. In this case, even if the workpiece 1 has a large size, it becomes easier to move the workpiece 1 stably. In addition, 39 in FIG. 3 is a turret punch press, and 41 is an unloading device.

Also, depending on the size and weight of the workpiece 1, the workpiece support means on the table 5 may not be supported by rolling elements as described above, but may be supported by a floating support, that is, a floating branch using an air layer, a so-called air table, by ejecting air onto the surface of the moving table. By using it, you can move even more easily.

Furthermore, the reciprocating drive means can easily be mechanical, such as a motor cylinder, a reciprocating drive device using a rotating crank arm, or a system driven by a stretched roller chain, instead of the air cylinder 33. Just choose something. Moreover, various time lag mechanisms can be adopted as a structure in which the pad moves horizontally after pressing the workpiece.

[Effect of idea]

As can be understood from the above description of the embodiments, in short, the present invention provides a loading device 37 above the table 5 that supports the workpiece 1 so as to be horizontally movable. A bell crank comprising one arm 15 having a substantially horizontal shape and having a pad 11 at its tip that can freely come into contact with the upper surface of the workpiece 1 and the other arm 21 having a substantially vertical shape. The loading device 37 is provided with a reciprocating actuating device 33 which is pivotally supported by the reciprocating actuating device 33 and which reciprocates in the same direction as the moving direction of the shoe 25.
It is made by connecting these.

With the above configuration, in the present invention, when an attempt is made to reciprocate the shoe 25 by the reciprocating actuating device 33, the bell crank 13 is always actuated.
Prior to movement of the shoe 25, the pad 11 is moved up and down. Therefore, according to the present invention, the workpiece 1 can be pressed and moved by the pad 11, and the pad 11 can be released after the workpiece 1 has been moved with an extremely simple structure.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of the device of this invention;
2 is a cross-sectional view taken along the - arrow in FIG. 1, and FIG. 3 is a plan view of the apparatus shown in FIG. 1 modified and used for positioning a workpiece in a turret punch press. Explanation of main drawing symbols, 1...Work, 5...
Table, 11...Rubber pad, 13...Bell crank, 17...Horizontal shaft, 23...Linear guide mechanism, 33...Air cylinder (reciprocating drive means).

Claims (1)

[Scope of utility model registration request] A loading device 37 is provided above the table 5 that supports the workpiece 1 in a horizontally movable manner, and a shoe 25 supported by the loading device 37 in a horizontally movable manner has a pad that can freely come into contact with the upper surface of the workpiece 1. 11 at the tip, one arm 15 is approximately horizontal, and the other arm 2 is approximately vertical.
1, and a reciprocating actuator 33 that reciprocates in the same direction as the moving direction of the shoe 25 is connected to the loading device 3.
A workpiece moving device characterized in that the reciprocating device 33 and the other arm 21 of the bell crank 13 are connected to each other.