CN212144124U

CN212144124U - Forced pressing structure of stamping die

Info

Publication number: CN212144124U
Application number: CN202020537571.XU
Authority: CN
Inventors: 庄向南
Original assignee: XIAMEN TEKE TOOLING INDUSTRY CO LTD
Current assignee: XIAMEN TEKE TOOLING INDUSTRY CO LTD
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-12-15
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a strong pressure structure of a punching die, which comprises an upper die base, a lower die base, a blanking male die, a male die fixing plate, a stripper plate and a blanking female die; the upper die base is connected with the lower die base through a guide mechanism, the upper end of a blanking male die is fixed on the upper die base through a male die fixing plate, the lower end of the blanking male die penetrates through a stripper plate in a clearance mode, the stripper plate is connected with the male die fixing plate in a mode capable of moving up and down, and the blanking female die is installed on the lower die base. The stripper is close to towards the blanking die, forms the passageway that the material area passes through between stripper and blanking die, and the bottom surface of stripper is equipped with the material pressing sand grip more than one, and the inboard of this more than one material pressing sand grip and pin is relative. Because the utility model discloses be equipped with in the bottom surface of stripper and press the material sand grip, should press the material sand grip downward bulge to be used for compressing tightly the material and take the pin, the corresponding pressure material volume is matchd to the different positions in feed area, strengthens the pressure material power at weak little position very much emphatically to improve pin upset phenomenon, have the advantage of pressing the material reliably.

Description

Forced pressing structure of stamping die

Technical Field

The utility model relates to a stamping die especially relates to a stamping die forced compression structure.

Background

With the rapid development of the integrated circuit industry, the automation degree of the packaging process is higher and higher, and accordingly, the technical index requirements of the lead frame are also greatly improved, so that the multi-level process requirements are provided for a mold for producing the frame. As shown in fig. 1, the lead frame product 10 has 48 leads, the width of the head of the lead 101 is 0.103, the thickness of the punching material is 0.127 mm, and the maximum inclination of the lead is 2.5 °. The safe ratio of the traditional stamping die to the material pressing width (W) and the material thickness (T)) is as follows: W/T is more than or equal to 1.5, and the coefficient ratio of the product is as follows: 0.103/0.127=0.81, and a significant overrun may cause a pin upset and stress accumulation due to poor swaging during the stamping process, thereby causing a series of poor specifications.

Disclosure of Invention

An object of the utility model is to provide a press die forced compression structure that the material is reliable.

In order to achieve the above object, the technical solution of the present invention is:

the utility model relates to a strong pressure structure of a punching die, which comprises an upper die base, a lower die base, a blanking male die, a male die fixing plate, a stripper plate and a blanking female die; the upper die base is connected with the lower die base through a guide mechanism, the upper die base can move up and down relative to the lower die base, the upper end of a blanking male die is fixed on the upper die base through a male die fixing plate, the lower end of the blanking male die penetrates through a discharging plate in a clearance mode and is matched with a blanking female die, the discharging plate is connected with the male die fixing plate in a manner of moving up and down, and the blanking female die is installed on the lower die base; the stripper is close to towards the blanking die, forms the passageway that the material area passes through between stripper and blanking die, and the bottom surface of stripper is equipped with the material pressing sand grip more than one, and the inboard of this more than one material pressing sand grip and pin is relative.

The two pressing convex strips on the discharging plate are opposite to the inner sides of the pins needing to be punched.

The material pressing protruding strips on the discharging plate are arranged in a strip mode, and the strip material pressing protruding strips are opposite to the inner sides of the pins on one sides of the pins to be punched.

The height of the pressing convex strips on the stripper plate is 0.01-0.015 mm.

After the technical scheme is adopted, because the utility model discloses a press the material height at the pressure face design ladder of mould, promptly, be equipped with more than one in the bottom surface of stripper, should press the material sand grip downward bulge to be used for compressing tightly and take the pin, the feed takes different positions to match corresponding pressure material volume, emphasizes the pressure material power of strengthening weak little position (the left side) very much to improve pin upset phenomenon, have the advantage of pressing the material reliably.

The invention will be further described with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic illustration of a product;

fig. 2 is a schematic view of a first embodiment of the invention;

fig. 3 is a schematic diagram of the pressing of the first embodiment of the present invention;

fig. 4 is a schematic view of a second embodiment of the present invention;

fig. 5 is a schematic diagram of the pressing material according to the second embodiment of the present invention;

fig. 6 is a schematic view of the punching sequence of the present invention.

Detailed Description

As shown in fig. 2, it is the first embodiment of the forced pressing structure of the stamping die of the present invention, which comprises an upper die base 1, a lower die base 2, a blanking male die 3, a male die fixing plate 4, a discharging plate 5 and a blanking female die 6.

The upper die base 1 is connected through guiding mechanism with the die holder 2 and the upper die base 1 can reciprocate relatively die holder 2, and the upper end of blanking terrace die 3 is fixed on the upper die base 1 through punch plate 4, and the lower extreme clearance of blanking terrace die 3 passes stripper 5 and cooperates with blanking die 6, and stripper 5 is connected with punch plate 4 with the mode that can reciprocate, and blanking die 6 is installed on die holder 2. The stripper plate 5 is close to the blanking die 6, a passage through which the material belt 20 passes is formed between the stripper plate 5 and the blanking die 6, a pressing protruding strip 51 is arranged on the bottom surface of the stripper plate 5, and the pressing protruding strip 51 is respectively opposite to the inner sides of the pins 102 on the side of the product 10 where the pins 101 need to be blanked (as shown in fig. 3). The height of the pressing convex strips 51 on the stripper plate 5 is 0.01-0.015 mm.

The utility model discloses a theory of operation:

as shown in fig. 6 and 3, the material strip is punched in a left-right sequence from the middle pin 101. In the first step of blanking S1, the left and right sides of the cavity are connected to the strip, and the blanking is free from problems, and when the second step of blanking S2 is performed, the right material of the cavity is still connected to the strip, and the left material has been narrowed (width 0.103 mm). For dealing with this limit blanking state, the utility model discloses a press the material height at the pressure face design ladder of mould stripper 5, match corresponding pressure material volume for the different positions of product, strengthen the pressure material power on weak little position (the left side) very much.

As shown in fig. 4, the second embodiment of the forced pressing structure of the stamping die of the present invention is basically the same as the first embodiment, except that:

the bottom surface of the stripper plate 5 ' is provided with two pressing ribs 51 ', and the two pressing ribs 51 ' are respectively opposite to the inner sides of the pins 102 ' on the two sides of the pins 101 ' to be punched on the strip product 10 (as shown in fig. 5).

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.

Claims

1. A strong pressing structure of a punching die comprises an upper die base, a lower die base, a blanking male die, a male die fixing plate, a stripper plate and a blanking female die; the upper die base is connected with the lower die base through a guide mechanism, the upper die base can move up and down relative to the lower die base, the upper end of a blanking male die is fixed on the upper die base through a male die fixing plate, the lower end of the blanking male die penetrates through a discharging plate in a clearance mode and is matched with a blanking female die, the discharging plate is connected with the male die fixing plate in a manner of moving up and down, and the blanking female die is installed on the lower die base; the method is characterized in that: the stripper is close to towards the blanking die, forms the passageway that the material area passes through between stripper and blanking die, and the bottom surface of stripper is equipped with the material pressing sand grip more than one, and the inboard of this more than one material pressing sand grip and pin is relative.

2. The press die pressing structure according to claim 1, wherein: the two pressing convex strips on the discharging plate are opposite to the inner sides of the pins needing to be punched.

3. The press die pressing structure according to claim 1, wherein: the material pressing protruding strips on the discharging plate are arranged in a strip mode, and the strip material pressing protruding strips are opposite to the inner sides of the pins on one sides of the pins to be punched.

4. The press die pressing structure according to claim 1, wherein: the height of the pressing convex strips on the stripper plate is 0.01-0.015 mm.