JPS60137530A - Press die - Google Patents

Abstract

PURPOSE:To obtain a press die that does not cause defective operation and performs good piercing work by stopping or starting piercing by energizing a driving cam by an elastic body and taking out and putting a locking member from and in a sliding cam provided with a piercing punch. CONSTITUTION:In a press die that slides a sliding cam 3 provided in a lower die 1 bringing a driving cam 23 provided slidably in an upper die 21 through an elastic body 31 into contact and pierces a work W by a piercing punch 15 attached to the sliding cam 3 and a button die 19, a locking member 13 is provided in an insertion hole 11 between the sliding cam 3 and lower die 1 allowing free taking out and putting in. When this locking member 13 is inserted, the sliding cam 3 that comes near to the work W through the driving cam with descent of the upper die 21 is stopped at a specified position and the elastic body is contracted. On the other hand, by attaching and detaching the locking member 13, the elastic body 31 is extended sufficiently, and the sliding cam 3 is shifted to the position of working of the work W through a driving cam 23.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a press mold, and more particularly to a press mold equipped with a cam m hM for applying a side portion of a workpiece.

[Prior Art] Conventional press molds of this type include, for example, those shown in Figs.
There is something like the one shown in the figure.

A slide cam 105 equipped with a piercing punch 103 on the left side of the lower die 101 is disposed so as to be movable in the left-right direction in FIG.
07 to the right.

On the other hand, the upper die 109, which is movable up and down, is provided with a drive cam 111 which moves the slide cam 105 to the left when the upper die 109 is lowered. Like the slide cam 105, this drive cam 111 is also connected to the backup block 1 by a spring 113.
15.

As shown in FIG. 2, an actuating device 117 is installed in the upper die 109, and a backup key 121 is attached to the tip of the actuator rod 119 of the actuating device 117. The position of the drive force lz 111 is changed depending on the force of the drive force lz 111 by entering between the drive cam 111 and the backup block 115 /υ.

Then, when it is necessary to pierce a workpiece (not shown) (on the left side of the piercing punch 103 in FIG. 1), the actuator row 11-
7 and insert the backup A--121 between the drive cam 111 and the backup block 115. (Refer to Figures 1 and 2) In this state C'' - When the mold 109 is lowered, the dry cutter cam 105 moves to the left in Figure 1 together with the piercing punch 103, and the workpiece (not shown) is pierced. Ru.

I = pierce h11 is required for the work not shown
is in contact with the back up block 115. (Figures 3 and 4) When the upper mold 109 is lowered in this state, the drive cam 1
Even if the drive cam 111 is lowered, the slide cam 1
05 and the slide cam 105 does not move, the workpiece not shown is not pierced.

In this way, in a press die equipped with a conventional cam mechanism, the backup key 121 is attached to the drive cam depending on whether the cam mechanism is required, when the cam mechanism is not required, that is, when piercing is required for the workpiece, or when the cam mechanism is not required. 1
11 and the backup block 115, or by pulling it out.

However, the drive cam 111 is always forced into the backup block 115, and during this time the backup key 121 is inserted/removed against the force, so the mold may wear out due to repeated operations, and dust etc. There is a problem in that if the metal gets mixed into the first edge surface, galling occurs, resulting in malfunction.

[Object of the Invention] The present invention was devised in view of the above-mentioned conventional problems, and an object of the present invention is to provide a press die that can perform good piercing work without causing malfunction.

1 structure of the invention] To achieve this object, the present invention provides a slide cam equipped with a punch for performing piercing on a workpiece on one side so as to be movable forward and backward relative to the workpiece.
・A live cam is installed between the cam and the elastic body on a moving white stone, and the pair of 311s approach each other and the slide cam approaches the workpiece during IC. A locking member for stopping the slide cam at a position where no workpiece is to be machined is freely inserted between one of the molds and the slide cam.

[Actual Application Example] Hereinafter, a first embodiment of the present invention will be described in detail based on FIGS. 5 to 8.

The lower mold 1 is provided with a slide cam 3 that can move forward and backward to engrave the workpiece W in the left-right direction as shown in FIG. This slide cam 3
The slide cam 3 is urged rightward via an auxiliary plate 9 by an elastic body 7 such as a spring loaded in a groove 5 formed in the lower mold 1 below.

A locking member 13 is provided in an insertion groove 11 bored in the lower die 1 on the left side of the groove 5 so as to be freely insertable and removable. That is, when the locking member 13 is inserted into the insertion groove 11, the slide cam 3 comes into contact with the locking member 13 and is stopped from moving. At this time, the piercing punch 15 that will be covered later is the workpiece W.
, and the workpiece W is not pierced.

A piercing bonder 15 is attached to the upper left side of the slide cam 3 through a punch bolter 17 facing leftward. Then, when the locking member 13 is removed and the rake 1-cam 3 moves to the left, the side of the workpiece W is pierced using the piercing punch 15 and the button die 19 attached to the lower mold 1 side. Process. Further, a slope 3a downward to the right is formed on the upper right side of the slide cam 3.

On the other hand, a drive cam 23 is vertically provided on an upper mold 21 which is not paired with the lower mold 1 and is movable up and down.

The drive cam 23 moves using a pair of guide members 25 provided on the upper die 21 as a guide, and is secured by a fixed part 27 attached to the guide member 25 to prevent it from falling. . In addition, a slope 23a that slopes to the right is formed at the lower left side of the drive cam 23, and when the lower die 21 is lowered, the slope 23a moves toward the slide cam 3.
Oblique i? By contacting and sliding against i13a, the slide cam 3 moves to the left.

Further, a bullet 11F body 31 is provided between the right side of the drive cam 23 and a backup portion 29 formed to protrude downward from the upper die 21. This elasticity\31 is
Bullet 1 (has a stronger elastic force than the body 7, and has an elastic force greater than the force necessary for piercing the work W. body 31 is 1
When it is retracted by 1, the drive cam 23 does not move to the right.

Also, the drive cam 23 is RII 1! The L body 31 is in contact with a locking portion 33 formed on the upper mold 21 in a substantially extended shape (see FIG. 8). In this manner, the workpiece W is pierced while the drive cam 23 remains in contact with the locking portion 33.

Further, a pad 37 is attached to the upper die 21 on the left side of the drive cam 23 via an elastic body 35 such as a spring having a downward biasing force.

This pad 37 is connected to the upper die 21 through the wear plate 38.
The workpiece W is fixed by the pad 37 and the lower mold 1, which can be raised and lowered freely.

Next, the action will be explained.

First, when the side portion of the workpiece W is not to be pierced, the locking member 13 is inserted into the insertion groove 11 as shown in FIG. Then, when the upper mold 21 is lowered, the pad 37 comes into contact with the work W placed on the lower mold 1, and the work W is fixed by the biasing force of the elastic body 35. When the upper mold 21 is further lowered in this state, the slope 23a of the drive cam 23, which has been lowered along with this lowering, comes into contact with the slope 3a of the slide cam 3 and slides against each other. Move to the left.

The leftward movement of the slide cam 3 stops when it comes into contact with the locking member 13, and does not move leftward any further.

At this point, the piercing punch 15 has not reached the side of the workpiece W. J, that is, the workpiece W is not pierced. When the upper mold 21 is further lowered from this state, the C drive cam 23 moves to the right with respect to the upper mold 21 while the slope 23a and the slope 3a are in sliding contact and the slide cam 3 is stopped, and the elastic body 31 is moved to the right. Compressed. By compressing this J: sea urchin elastic body 31, the upper mold 21 can be lowered to a predetermined minimum.

In this way, by inserting the locking member 13 into the insertion groove 11, 1. [Even if the mold 21 is lowered by a predetermined number of steps, the side portion of the workpiece W is not lowered by piercing.]

Next, when descending the side of the workpiece W with the piercing, do not insert the locking member 13 into the sea urchin insertion groove 11 as shown in FIG. Then, by lowering the upper mold 21, the pad 37 fixes the workpiece W placed on the lower mold 1. When the upper mold 21 is further lowered in this state, the slope 23a of the drive cam 23 comes into contact with the slope 3a of the slide cam 3 and slides against each other, as in the case when no piercing is performed. Here, since the elastic body 31 has a stronger elastic force than the elastic body 7, the drive cam 2
3 contact the slide cam 3 and slide each other, the drive cam 23 remains in contact with the locking portion 33 and does not move to the right with respect to the upper die 21 and remains stopped, and the slide cam 3 Advance and move towards W.

Along with this movement of the slides I-:'/J1-3, the piercing bonder 15 also moves, and the side portion of the workpiece W is pierced.

FIG. 9 shows a second embodiment of the invention.

J3, the same reference numerals as C are given to the same components as in the first embodiment (
=J to simplify the explanation. According to this, the drive cam 39 is vertically movable relative to a flange portion 41 formed on the upper part of the drive cam 39 or a kite portion 43 formed to protrude downward from the lower die 21. and,
A fixing member 45 attached to the lower end of the guide portion 43 prevents the drive cam 39 from falling. Furthermore, a hole 47 is drilled in the upper part of the drive cam 39,
Between the bottom 49 of this groove 47 and the upper mold 21, there is an elastic body 3 similar to the first embodiment that urges the drive cam 39 downward.
1, an elastic body 31 is provided on the elastic body 7, which has a strong elastic force and has an elastic force greater than the force necessary for piercing the workpiece W.

On the other hand, the locking part '4) which can be freely inserted into the lower mold 1 side
J13 is placed in contact with a backup portion 51 formed to protrude upward from the lower die 1 on the left side of the haze 5.

-1- In the case of the second embodiment described above, as in the case of the first embodiment, the locking member 13 is removed from the lower mold 1 when the workpiece W is required to be machined with the Binonosu 111. , when piercing is not required, attach the locking member 13 to the lower mold 1 with 1Φ
Enter.

FIG. 10 shows a third embodiment of this defense.
Components that are the same as those in the first and second embodiments are given the same reference numerals to simplify the explanation.7 According to this, the slide 1
-) Jmu 51 and drive cam 53 are -'s Boulder 5
A different cam unit 57 is provided on the lower mold 1. The slope 53a of the drive cam 53 is always in contact with the slope 51a of the slide cam 51, and the right side of the drive cam 53 is always in contact with the holder 55, so that the drive cam 53 can freely move up and down with respect to the holder 55.

In the holder 55 on the left side of the slide cam 51,
A locking portion +461 is provided so as to be freely insertable and removable.

Further, on the upper mold 21 above the drive cam 53, an elastic body 59, that is, an elastic body 6, which is substantially the same as in the first and second embodiments is provided.
An elastic body 59- is provided which has an elastic force stronger than 3 and has an elastic force greater than the force necessary for piercing the workpiece W.

C. When it is necessary to pierce the workpiece W, when the upper die 21 is lowered with the locking member 61 removed from the holder 55, the elastic body 59 comes into contact with the drive cam 53, and the drive cam 53 It descends relative to the voltage 55.

As the drive cam 53 descends, the slide cam 51
pierce bonder 15 and others advance toward workpiece W and perform piercing processing on workpiece W 1-1.

On the other hand, when not piercing the workpiece W, with the locking member 61 inserted into the holder 55, lower the upper die 21 in substantially the same manner as when piercing the workpiece described above.
Slide cam 5 via elastic body 59 and drive cam 53
1 moves to the left, but this movement comes into contact with the locking member 61 and stops. Then, even if C1 further lowers the upper die 21, the slide cam 51 does not move, so the bullet 1
By compressing the body 59, the upper mold 21 can be processed by a predetermined amount.

In each of the embodiments described below, the workpiece W is Although this was described above, this is not limited to piercing, but can also be carried out in 1110j processing, etc. Also,
In each of the above embodiments, the slide cam is provided on the lower mold side, but this invention can be applied to the flying cam where the fly cams are provided on the upper mold side.

``Effect of explanation'' - J, Uni J, J, If - 10,000 qQ (J is the person who regulates the forward limit of the slide cam on the advance side to the sliding force) Part 1 The other mold, which is paired with one mold, is equipped with an elastic body that can move the slide cam forward and backward via the drive cam. To respond when piercing etc. is required or not required, it is sufficient to simply insert and remove the locking member.Therefore, the conventional backup block and backup block are always biased and installed. Unlike inserting and removing a backup key between the drive cam and the drive cam, you can perform piercing work without any malfunction.

It should be noted that the present invention is not limited to the above-described embodiments, and may be implemented in other forms than the above-described embodiments.

[Brief explanation of the drawing]

Figures 1 to 4 relate to conventional examples, Figure 1 is a cross-sectional view of the cam mechanism when piercing, Figure 2 is a view in the direction of the ■ arrow in Figure 1, and Figure 3 is when not piercing. FIG. 4 is a cross-sectional view of the cam mechanism in FIG. 3, FIGS. 5 to 10 relate to embodiments of the present invention, and FIG. A sectional view showing the part of the press mold including the cam mechanism, Fig. 6 is the Vl arrow diagram of Fig. 5, and Fig. 7 is the
Figure 8 is a cross-sectional view similar to Figure 5 when piercing, Figure 9 is a cross-sectional view similar to Figure 5 according to the second embodiment, and Figure 10 is a cross-sectional view similar to Figure 5 according to the second embodiment. FIG. 5 is a sectional view substantially similar to FIG. 5 in the third embodiment. (Explanation of symbols representing main parts of drawings) 1... -
1. Type 3.51... Slide cam 13.61...
・ City member 15... Pierce pump (punch) 21... -to type 23.39.53... Drive cam 31.59...
・ Elastic body W... Work curve Wl- Figure 11 Figure 2

Claims (1)

[Claims] A slide cam equipped with a punch for performing piercing, etc. on a workpiece is provided in one mold so as to be movable forward and backward relative to the workpiece, and the one mold is paired with the other mold. is an elastic body [
A drive cam is movably provided between the slide cam and the elastic body to move the slide cam closer to the workpiece when the pair of dies approach each other. On the other hand, a locking member that stops the slide nom at a position where the workpiece will not be machined when approached is removably installed between one J (11 and the fly 1 and the force 11). Featured Press 11゜