CN206263086U - A Stamping Die to Prevent Scraps from Rebounding - Google Patents

Abstract

The utility model discloses a prevent stamping die of waste material rebound, including terrace die and die, the die cavity inner wall upper portion of die is equipped with bellied card material portion, clearance between terrace die outer wall and the die inner wall is less than card material portion is along the bellied height of the radial direction of die cavity, be equipped with on the terrace die outer wall and let lie in the depressed part of card material portion. The utility model discloses effectively prevent the rebound of blanking waste material, reduced mould cost of maintenance effectively, guaranteed the parts machining quality, and simple structure, it is with low costs.

Description

A Stamping Die to Prevent Scraps from Rebounding

technical field

The utility model belongs to the technical field of stamping, in particular to a stamping die for preventing waste materials from bouncing back.

Background technique

Stamping die is a special process equipment for processing materials (metal or non-metal) into parts (or semi-finished products) in cold stamping processing, called cold stamping die (commonly known as cold stamping die). Stamping is a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature to cause separation or plastic deformation to obtain the required parts.

When stamping, the waste material should be clamped in the cavity of the die, and it will fall from the blanking hole of the mold under the push of the subsequent waste material. The impact of blunt package caused by the wear of the punch edge, or the magnetic adsorption of the unremoved magnetic punch is easy to jump out, which seriously affects the appearance quality of the stamping product, and sometimes even affects the life of the working parts of the mold, thus affecting the precision of the mold. It greatly affects the stamping production efficiency.

There are many shortcomings in the traditional method of preventing waste material from bouncing back. Therefore, people improve it, such as Chinese patent: CN205463861U, which prevents waste material from bouncing back by providing a raised clamping part on the inner wall of the through hole of the groove insert. It solves many shortcomings of the traditional method, but the height of the protrusion of the clamping part is smaller than the gap between the outer wall of the punch and the inner wall of the through hole, so the height of the protrusion is very small, and the blocking effect on the waste is not very ideal, especially When blanking does not close the waste, the jamming effect is even worse.

When punching the waste material at the edge of the strip, sometimes it takes two or more steps to complete it. As shown in Figure 1, the first step is to punch out a part of the waste material (shaded part 1′) , enter the second step to punch out the remaining waste (shaded part 2'), and repair the incision of the first punching. In this blanking situation, the effect of the tool for blanking the first blanking against rebounding of the scrap can be further improved.

Contents of the invention

The purpose of the utility model is to solve the above problems and provide a stamping die with simple structure and low cost, which can effectively prevent the bounce of punching waste, effectively reduce the maintenance cost of the die, ensure the processing quality of the parts.

For this reason, the utility model discloses a stamping die for preventing waste materials from bouncing back, which includes a punch and a die. The gap between the inner walls of the dies is smaller than the raised height of the clamping portion along the radial direction of the cavity, and the outer wall of the male mold is provided with a recessed portion that gives way to the clamping portion.

Further, the outer surface of the holding part is an arc surface.

Furthermore, the depressed portion is a semicircular groove.

Further, it also includes an upper seat plate, an upper backing plate, a fixing plate, a stripping plate, a concave formwork, a lower backing plate and a lower seat plate, the upper backing plate is installed on the lower side of the upper seat plate, and the fixing plate is installed on the upper backing plate The lower side of the plate constitutes the upper mold part, the lower backing plate is set on the lower seat plate, the concave template is set on the lower backing plate to form the lower mold part, the discharge plate is set on the upper seat plate through the discharge spring and is located in the concave On the template, the concave mold is arranged on the concave template, and the convex mold is arranged on the fixed plate.

Furthermore, it also includes a height stop plate, and the height stop plate is arranged on the upper side of the unloading plate.

Further, the upper seat plate, the upper backing plate and the fixing plate are fixed together by bolts.

Further, the concave formwork, the lower backing plate and the lower seat plate are fixed together by bolts.

Further, it also includes a guide sleeve and a guide post, and the upper mold part, the stripper plate and the lower mold part are positioned and connected through the guide sleeve and the guide post.

Further, an outer limit post is provided between the upper mold part and the lower mold part.

Further, the lower seat plate is provided with a lifting guide pin, and the lifting guide pin protrudes from the upper surface of the concave formwork to position and lift the material to be cut.

Beneficial technical effects of the utility model:

The utility model is provided with a protruding clamping part on the inner wall of the cavity of the die, and a recessed part that gives way to the clamping part on the outer wall of the punch, and the gap between the outer wall of the punch and the inner wall of the die It is smaller than the height of the protrusion of the clamping portion along the radial direction of the cavity. When the punch is lifted up, the clamping part can effectively block the waste to prevent the punching waste from bouncing back, effectively reducing the maintenance cost of the mold, ensuring the processing quality of the parts, and the structure is simple and the cost is low.

Description of drawings

Fig. 1 is the schematic diagram of the strip to be blanked;

Fig. 2 is the structural representation of the utility model embodiment;

Fig. 3 is the punch structure schematic diagram of the utility model embodiment;

Fig. 4 is a schematic diagram of the die structure of the embodiment of the present invention.

detailed description

The utility model is further described now in conjunction with accompanying drawing and specific embodiment.

As shown in Fig. 2-4, a stamping die for preventing waste from bouncing back includes an upper seat plate 1, an upper backing plate 2, a fixed plate 3, a discharge plate 5, a punch 11, a die 12, a die plate 6, a lower The backing plate 7 and the lower seat plate 8, the upper backing plate 2 is installed on the lower side of the upper backing plate 1, and the fixed plate 3 is installed on the lower side of the upper backing plate 2 to form the upper mold part together, in order to make the upper seat plate 1, the upper backing The connection between the plate 2 and the fixed plate 3 is more stable. In this specific embodiment, preferably, the upper seat plate 1 , the upper backing plate 2 and the fixed plate 3 are fixed together by bolts. Of course, in other embodiments, the upper seat plate 1 , the upper backing plate 2 and the fixing plate 3 can also be fixed by other existing fixing methods.

The lower backing plate 7 is arranged on the lower backing plate 8, and the concave template 6 is arranged on the lower backing plate 7 to form the lower die part together. Stability, in this specific embodiment, preferably the concave template 6, the lower backing plate 7 and the lower seat plate 8 are fixed together by bolts. Of course, in other embodiments, the concave template 6 , the lower backing plate 7 and the lower seat plate 8 can also be fixed by using other existing fixing methods.

The unloading plate 5 is arranged on the upper seat plate 1 and on the concave plate 6 through the unloading spring 16, and the specific structure can refer to the prior art, which will not be described in detail here.

The die 12 is arranged on the die plate 6, and the upper part of the cavity inner wall of the die 12 is provided with a raised clamping part 121, and the punch 11 is arranged on the fixed plate 3, and the outer wall of the punch 11 and the inner wall of the die 12 are The gap is smaller than the protrusion height of the clamping portion 121 along the radial direction of the cavity, and the outer wall of the punch 11 is provided with a recessed portion 111 that is located in the clamping portion 121 . In this way, the raised height of the clamping part 121 can be made larger. When the punch 11 is lifted up, the clamping part 121 can effectively clamp the waste, prevent the punching waste from bouncing back, and effectively reduce the cost of mold maintenance. , to ensure the processing quality of parts, even when punching unclosed waste, the jamming effect is very good. However, the protruding structure punched out by the recessed portion 111 can be punched out in a subsequent punching process without changing the appearance of the part.

In this specific embodiment, the number of clamping parts 121 is two, which are arranged at intervals with each other. Of course, in other embodiments, the number can be set according to actual needs.

In this specific embodiment, in order to prevent the clamping part 121 from scratching the punch 11, the outer surface of the clamping part 121 is preferably a circular arc surface, such as the clamping part 121 is a hemispherical structure, and the concave part 111 is semicircular. groove. Of course, in other embodiments, the clamping portion 121 may also be in other shapes such as cones and strips, and the recessed portion 111 is in a corresponding shape, which can be easily realized by those skilled in the art and will not be described in detail.

Further, in this specific embodiment, a height stop plate 4 is also included, and the height stop plate 4 is arranged on the upper side of the discharge plate 5 .

Further, in this specific embodiment, a guide sleeve 15 and a guide post 14 are also included, and the upper mold part, the stripper plate 5 and the lower mold part are positioned and connected through the guide sleeve 15 and the guide post 14 .

Further, in this specific embodiment, an outer limit post 9 is provided between the upper mold part and the lower mold part.

Further, in this specific embodiment, the lower seat plate 8 is provided with a lifting guide pin 13, and the lifting guide pin 13 protrudes from the upper surface of the concave template 6 to position and lift the material 10 to be cut. . Reference can be made to the prior art, which will not be described in detail here.

Although the utility model has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that, without departing from the spirit and scope of the utility model defined by the appended claims, changes in form and details may be made. Making various changes to the utility model is within the protection scope of the utility model.

Claims (10)

1. a kind of stamping mold for preventing scrap-bounce, including punch-pin and cavity plate, it is characterised in that：The die cavity inwall of the cavity plate Top is provided with the portion that gets stuck of projection, gap between the punch-pin outer wall and cavity plate inwall less than the portion that gets stuck along die cavity radially The raised height in direction, the punch-pin outer wall is provided with and makes way for the depressed part in the portion of getting stuck.

2. the stamping mold for preventing scrap-bounce according to claim 1, it is characterised in that：The portion outer surface that gets stuck is Arc surface.

3. the stamping mold for preventing scrap-bounce according to claim 2, it is characterised in that：The depressed part is semicircle Groove.

4. the stamping mold for preventing scrap-bounce according to claim 1, it is characterised in that：Also include upper base plate, upper pad Plate, fixed plate, stripper, concave template, lower bolster and lower seat board, the upper padding plate are arranged on upper base plate downside, the fixed plate Part of the upper die is constituted installed in upper padding plate downside, the lower bolster is arranged on lower seat board, and the concave template is arranged on lower bolster Upper composition part of the lower die, the stripper is arranged on upper base plate and on concave template by discharging spring, and the cavity plate sets Put on concave template, the punch-pin is arranged in fixed plate.

5. the stamping mold for preventing scrap-bounce according to claim 4, it is characterised in that：Also include only plate high, it is described Only plate high is arranged on stripper upside.

6. the stamping mold for preventing scrap-bounce according to claim 4, it is characterised in that：The upper base plate, upper padding plate It is bolted on together and fixed plate between.

7. the stamping mold for preventing scrap-bounce according to claim 4, it is characterised in that：The concave template, lower bolster It is bolted on together and lower seat board between.

8. the stamping mold for preventing scrap-bounce according to claim 4, it is characterised in that：Also include guide pin bushing and guide pillar, The part of the upper die, stripper and part of the lower die are positioned by guide pin bushing and guide pillar, connection.

9. the stamping mold for preventing scrap-bounce according to claim 4, it is characterised in that：The part of the upper die and lower mould Outer limited post is provided between part.

10. the stamping mold for preventing scrap-bounce according to claim 4, it is characterised in that：The lower seat board is provided with Lifter guide pin, the lifter guide pin stretches out concave template upper surface to position material to be cut and risen lift.