JPH0292425A - Press die set - Google Patents

Abstract

PURPOSE:To work many parts to be worked with a pair of a movable die and a fixed die by working a part to be worked of a plate material every other pitch through one action of the movable die, giving one more action to the movable die while the plate material moves one pitch and working the remaining part to be worked. CONSTITUTION:The part 2 to be worked is worked by one action of the punch 10 and the die 8 set respectively on the movable die 6 and the fixed die 4, on a plate material 1 at every other pitch. A ratchet wheel 19 rotated by a click member 21 at a prescribed angle for every operation of the click member 21 and the movable die 6 is provided. A cam mechanism is driven by the ratchet wheel 19 and an operation moving the plate material 1 by one pitch of a part 2 to be worked and an operation to return the plate material 1 to the original position before it is moved are performed alternately by the rotation of every prescribed angle of the ratchet wheel 19 through this cam mechanism. Thereby, many parts to be worked can be worked by a pair of a movable die and a fixed die.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a press die device for processing a large number of workpieces on a plate material at predetermined pitch intervals.

(Prior Art) As shown in FIG. 4, in a press die for making a large number of holes 2 arranged in a zigzag pattern as a workpiece in a plate material 1 at a predetermined pitch interval P, all the holes 2 are drilled at once. When punching is attempted, the distance between the die holes and the pin-shaped punch becomes very narrow, and as a result, the strength of the mold decreases and there is a risk of breakage.

For this reason, in the past, two press dies were prepared with die holes and bottle-shaped punches corresponding to every other row of holes 2, as shown with diagonal lines in FIG. The holes 2 were punched out every other row, and all the holes 2 were punched out by punching twice.

(Problems to be Solved by the Invention) However, using two press molds to process the product in 20 parts as described above results in high equipment costs and poor productivity.

Therefore, it is conceivable to use only one press die, and after the first punching, move the plate 1 by an amount equivalent to the pitch P of the holes 2 using a moving device to perform the second punching. In order to move it, a dedicated moving device equipped with a driving source is required, which also increases equipment costs.

The present invention was made in order to solve these problems.The purpose of the present invention is to use only one die and punch combination, and to move the plate material by the pitch equivalent to the workpiece. To provide a press type device that does not require a separate dedicated device.

[Structure of the invention] (Means for solving the problem) In order to achieve the above object, the press mold device of the present invention has the following features:
Punches and dies are provided on one and the other of the movable mold and the fixed mold, respectively, to process the workpiece part on the plate every other pitch by one action of the movable mold, and a pawl member is provided on the movable mold side. , a ratchet wheel is provided on the fixed mold side to be rotated by a predetermined angle by a pawl member for each movement of the movable mold,
Driven by this ratchet wheel, the plate material is rotated by the predetermined angle of each of the ratchet wheels to move the plate material into one part of the workpiece part.
A cam mechanism is provided that alternately performs an operation of moving the object by the pitch and an operation of returning it to its original position before movement.

(Function) When the movable die makes one movement, the workpiece is machined every other pitch on the plate material set on the fixed die side.

One movement of the movable mold causes the pawl member to rotate the ratchet wheel by a predetermined angle. Then, the plate material is moved by one pitch of the workpiece by the cam mechanism, and the next movement of the movable die processes the workpiece located between the workpieces previously drilled in the workpiece.

(Example) An example of the present invention will be described below based on the drawings. still,
This embodiment is applied to the case where holes 2 arranged in a zigzag pattern as shown in FIG. 4 are formed at a predetermined pitch interval in a plate material 1 as a workpiece.

First, the mold configuration will be explained with reference to FIG. 1. A fixed mold 4 is provided on the bed 3 of the press, and a movable mold 6 is provided on the ram 5. The fixed mold 4 has a die hole 8a in the holder 7.
The movable mold 6 is configured by providing a die 8 having a
A holder 11 having a pin-shaped punch 10 is provided on a holder base 9, and a stripper plate 12 is provided on the lower surface of the holder 11.

The plate material 1 to be drilled is set on a die 8, and on this die 8, as shown in FIGS. Plates 13 and 14 are provided so as to be slidable in the left and right directions. The pair of positioning plates 13 and 14 are connected by a guide pin 15 so that they move together, and the guide pin 15 is supported by a guide receiving portion 16 provided on the holder 7.

Further, as shown in FIGS. 2 and 3, a shaft 17 is rotatably supported by a bearing 18 in the holder 7 of the fixed mold 4, located on the left side of the die 8. A ratchet wheel 19 is attached to the shaft 17, and the ratchet wheel 19 has a total of eight pawls 19a at angular intervals of 45 degrees on its outer periphery. On the other hand, a square bar 20 is attached to the holder base 9 of the movable mold 6, and a pawl member 21 that engages with the pawl 19a of the ratchet wheel 19 is rotatably supported at the bottom of the square bar 20 by a pin 22. There is. This claw member 21 is a pusher 2 provided on a square bar 20.
It is biased to rotate in the direction of arrow A by the spring force of the compression coil spring 24 received through 3. And the pawl member 21
is - movement (up and down - reciprocating movement) of movable type 6 (ram 5)
The ratchet wheel 19 is rotated by a predetermined angle.
That is, when the movable mold 6 descends, it rotates in the opposite direction of arrow A and passes the pawl 19a without rotating the ratchet wheel 19, and when the movable mold 6 ascends, it engages with the pawl 19a. The ratchet wheel 19 is rotated by 45 degrees in the direction of arrow B. Note that 25 is a reverse rotation prevention stopper that prevents the ratchet wheel 19 from rotating in the opposite direction of arrow B.

Now, the rotation of the ratchet wheel 19 described above is converted by the cam mechanism 26 into reciprocating movement of the positioning plates 13, 14. That is, as shown in FIG. 3, a cam 27 is attached to the shaft 17 and rotates integrally with the ratchet wheel 17. This cam 27 has recesses 27a and projections 27b alternately formed at angular intervals of 45 degrees.

On the other hand, of the pair of positioning plates 13 and 14, a cam follower 28 that slides on the cam 27 is protruded from the outer surface of the left positioning plate 13, and a cam follower 28 that slides into contact with the cam 27 is provided on the outer surface of the left positioning plate 13. A positioning plate 13 is provided between the plate 29 and the plate 29.
．． A compression coil spring 30 is provided that biases the cam follower 28 in the direction of arrow C to press the cam follower 28 against the cam 27. Then, the cam follower 28 is connected to the recess 27 of the cam 27.
When the ratchet wheel 19 rotates 45 degrees in the direction of arrow B from the position a, the cam follower 28 moves to the cam 27.
At this time, the positioning plates 13 and 14 move in the opposite direction of arrow C against the spring force of the compression coil spring 30. Furthermore, the ratchet wheel 19 is 4
When the cam follower 28 is rotated 5 degrees in the direction of arrow B, the cam follower 28 falls from the convex portion 27b of the cam 27 into the concave portion 27g, and as a result, the positioning plate 13.14 is moved in the direction of arrow C by the spring force of the compression coil spring 3o. It will return to its original position. In this case, the height of the convex portion 27b of the cam 27 is set such that the positioning plate 13.14 moves in the direction of arrow C and in the opposite direction of arrow C by an amount corresponding to the pitch P of the holes 2 of the plate material 1. .

Next, the operation of the above configuration will be explained.

It is now assumed that the cam follower 28 is located in the recess 27a of the cam 27, and in this state, the plate 1 is inserted between the pair of positioning plates 13 and 14, and the die 8
set on top. Then, when the movable mold 6 is lowered by the ram 5, the stripper plate 12 presses and fixes the plate material 1 onto the die 8, and in this state, the punch 10 and the die 8
In cooperation with the die holes 8a, holes 2 are punched out in the plate material 1 at every other pitch as shown by diagonal lines in FIG. As the fixed die 4 descends, the pawl member 21 passes through one pawl 19a of the ratchet wheel 19, and when the movable die 6 moves up after punching the hole 2, the pawl member 21 engages with the pawl 19a. 4 and move the ratchet wheel 19 in the direction of arrow B.
Rotate 5 degrees.

This rotation of the ratchet wheel 19 is transmitted to the cam 27 via the shaft 17, so the cam 27 rotates 45 degrees in the direction of arrow B. Then, the cam follower 28 is connected to this cam 2.
7 comes to ride on the convex portion 27b, so the pair of positioning plates 13 and 14 move in the direction opposite to the arrow C by 2 pitches of the holes 2, and move the plate 1 by 2 pitches in the direction opposite to the arrow C. move in the direction. While the plate 1 is held at a position moved by two pitches, the movable die 6 descends again, and in the same manner as described above, the plate 1 is placed at every other pitch, that is, between the rows of previously punched holes 2. The holes 2 are punched out, and all the holes 2 to be made in the plate material 1 are punched out. Thereafter, the movable mold 6 is raised, and at this time, the ratchet wheel 19 is moved 45 degrees in the direction of arrow B by the pawl member 21 in the same manner as described above.
rotated by degrees. Therefore, the cam 27 rotates 45 degrees, and the cam follower 28 moves from the convex portion 27b to the concave portion 27a.
As a result, the positioning plates 13 and 14 are moved in the direction of arrow C by one pitch P of the hole 2 by the spring force of the compression coil spring 30 and returned to their original positions.

Therefore, the plate material 1 that has been punched is placed on the positioning plate 13.1.
4, and the next plate 1 is inserted between the positioning plates 13 and 14.

Although the above embodiment is applied to the case where a large number of holes are made in a plate material, it may also be applied to the case where, for example, a large number of bent parts having a V-shaped cross section are formed at a predetermined pitch interval. Various methods can be considered in addition to punching and bending.

[Effects of the Invention] As explained above, according to the press die apparatus of the present invention, the workpiece is machined every other pitch on the plate by one operation of the movable die, and then the workpiece is machined every other pitch of the workpiece. By moving the movable mold by the same amount and then moving the movable mold further, the remaining parts to be machined can be machined. Using the movement of the movable type that operates to process the processing part, the plate material can be moved by one pitch using the ratchet wheel and cam mechanism, so there is no need for a separate dedicated movement mechanism equipped with a drive source. It is also possible to reduce equipment costs.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal side view, FIG. 2 is a plan view of the fixed mold side, FIG. 3 is a longitudinal side view of the cam mechanism, and FIG. 4 is a processed side view. FIG. In the figure, 1 is a plate material, 2 is a hole (worked part), 4 is a fixed type, and 6
is a movable type, 8 is a die, 10 is a punch, 13.14 is a positioning plate, 17 is a shaft, 19 is a ratchet wheel, 21
The claw member, 26 is a cam mechanism, 27 is a cam, and 28 is a cam follower. Applicant: Toshiba Corporation

Claims (1)

[Claims] 1. In a device that processes a large number of workpieces on a plate material at predetermined pitch intervals, one of the movable and fixed molds is provided, respectively, and one movement of the movable mold causes the workpiece to be machined on the plate material. a punch and a die for processing the part every other pitch; a pawl member provided on the movable mold side;
a ratchet wheel provided on the fixed mold side and rotated by a predetermined angle by the pawl member for each movement of the movable mold; and a ratchet wheel driven by the ratchet wheel to rotate the plate material by the predetermined angle. A press type device comprising a cam mechanism that alternately moves a workpiece part by one pitch and returns it to its original position before movement.