CN108638456B

CN108638456B - Processing die

Info

Publication number: CN108638456B
Application number: CN201810431923.0A
Authority: CN
Inventors: 单壮壮; 何明志
Original assignee: Ruisheng Precision Manufacturing Technology Changzhou Co ltd
Current assignee: Ruisheng Precision Manufacturing Technology Changzhou Co ltd
Priority date: 2018-05-08
Filing date: 2018-05-08
Publication date: 2021-02-19
Anticipated expiration: 2038-05-08
Also published as: CN108638456A

Abstract

The invention provides a processing die which comprises an upper die, a lower die, a surface needle plate, an ejector rod for ejecting a product to be processed and a secondary ejection plate arranged on one side of the surface needle plate, which is far away from the lower die, wherein a surface needle bottom plate is arranged at the bottom of the surface needle plate, a secondary ejection bottom plate is arranged at the bottom of the secondary ejection plate, the ejector rod comprises a first ejector rod and a second ejector rod, the first ejector rod penetrates through the surface needle plate and abuts against the surface needle bottom plate, the second ejector rod penetrates through the secondary ejection plate and abuts against the secondary ejection bottom plate, the second ejector rod is positioned at a downward warping deformation part of the product to be processed, which needs to be subjected to plane correction, and an adjusting gap is formed between the secondary ejection plate and the surface needle bottom plate before the ejector rod is. Because the downward warping deformation part and the non-deformation part are ejected out in a time interval, a force opposite to the deformation trend is given to the product, and the poor flatness of the product is effectively corrected. The method has the advantages of simple structure, stable operation, good effect, low labor cost and stable mass production.

Description

Processing die

Technical Field

The invention relates to the field of machining, in particular to a machining die for machining an acoustic element.

Background

With the increasing demand of mobile phone products, it is necessary to ensure that the processing mold of the acoustic device used in the mobile phone product meets the requirement of mechanical processing and simultaneously ensures good acoustic performance.

When the acoustic element is injection-molded, inserts are generally injected, for example, a basin frame is injection-molded, a steel sheet is generally injected inside the basin frame, and the injection-molded inserts have uneven injection-molded shrinkage, so that the flatness of the product is poor. In order to correct poor flatness, the prior art generally adopts two schemes of steel sheet anti-warping and tool shaping. Then, the two schemes have low manual efficiency, unstable shaping effect and difficult mass production.

Therefore, there is a need to provide a new processing mold to solve the above problems.

Disclosure of Invention

The invention provides a processing mold for solving the technical problems, which can conveniently and effectively correct the flatness of an injection molding insert.

The specific scheme is that the processing die comprises an upper die with an upper die core, a lower die with a lower die core, a surface needle plate and an ejector rod for ejecting a product to be processed, the upper die core and the lower die core move relatively under the driving of the upper die and the lower die to clamp and position a product to be processed, the processing mould also comprises a secondary ejector plate arranged on one side of the surface needle plate far away from the lower mould, the bottom of the dough needle plate is provided with a dough needle bottom plate, the bottom of the secondary ejection plate is provided with a secondary ejection bottom plate, the ejector rods comprise a first ejector rod which penetrates through the dough needle plate and abuts against the dough needle bottom plate and a second ejector rod which penetrates through the secondary ejection plate and abuts against the secondary ejection bottom plate, the second ejector rod is positioned at a lower warping deformation part of a product to be processed, which needs to be subjected to plane correction, before the ejector rod ejects, an adjusting gap is formed between the secondary ejection plate and the surface needle bottom plate.

Preferably, the processing mold comprises an I-shaped plate and a positioning ring, the I-shaped plate is arranged on one side, far away from the lower mold, of the upper mold, and the positioning ring is arranged on the I-shaped plate.

Preferably, the processing mold further comprises a bottom plate with a supporting function, and a containing groove for containing the secondary ejection bottom plate is formed in the bottom plate.

Preferably, before the ejector rod ejects, the surface of the secondary ejection bottom plate is flush with the surface of the bottom plate.

Preferably, the lower die core is provided with a cavity for accommodating a product to be processed.

The processing die comprises a secondary ejection plate arranged on one side of a surface needle plate far away from a lower die, a surface needle bottom plate is arranged at the bottom of the surface needle plate, a secondary ejection bottom plate is arranged at the bottom of the secondary ejection plate, the ejector rods comprise first ejector rods penetrating through the surface needle plate and abutting against the surface needle bottom plate and second ejector rods penetrating through the secondary ejection plate and abutting against the secondary ejection bottom plate, the second ejector rods are located at downward warping deformation positions of products to be processed, which need to be subjected to plane correction, and an adjusting gap is formed between the secondary ejection plate and the surface needle bottom plate before the ejector rods are ejected. Because the downward warping deformation part and the non-deformation part are ejected out in a time interval, a force opposite to the deformation trend is given to the product, and the poor flatness of the product is effectively corrected. The method has the advantages of simple structure, stable operation, good effect, low labor cost and stable mass production.

Drawings

FIG. 1 is a schematic structural view of a processing mold according to the present invention;

FIG. 2 is a cross-sectional view of the inventive tooling die prior to ejection of the ejector pin;

fig. 3 is a cross-sectional view of the processing mold of the present invention after the ejector pins are ejected.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the present invention provides a processing mold 100 including an upper mold 1, a lower mold 2, an i-shaped plate 3, and a base 4, which are assembled with each other.

The upper die 1 and the lower die 2 can be moved close to or away from each other under the pushing of an external force, one of the upper die 1 and the lower die 2 is a fixed side, and the other is a movable side, specifically, in this embodiment, the upper die 1 is a movable side, the lower die 2 is a fixed side, the upper die 1 is embedded with an upper die core 11, and the lower die 2 is embedded with a lower die core 21. During the machining process, the upper mold 1 moves towards the lower mold 2 under the action of the external driving force, i.e. the upper mold core 11 is driven to move towards the lower mold core 21. Of course, in alternative embodiments, the positions of the lower mold core 21 and the upper mold core 11 may be interchanged, and both the upper mold core may be a fixed side and the lower mold core may be a movable side. The product 8 to be processed is arranged between the upper die 1 and the lower die 2, and specifically, the lower die core 21 is provided with a cavity for accommodating the product to be processed. The upper die core 11 is driven by the upper die 1 to clamp the product 8 to be processed.

A positioning ring 31 is arranged on the I-shaped plate 3, and in the using process, the positioning ring 31 is arranged corresponding to the pouring gate so as to determine the pouring position.

The base 4 comprises mould feet 41 and a base plate 42. The base 4 is arranged on the external surface and plays a role in supporting the whole machining die. Between the mould feet 41 there is provided an accommodation space.

The processing die further comprises a surface needle plate 6 and a secondary ejection plate 7 which are arranged in the base 4, wherein a surface needle bottom plate 61 is arranged at the bottom of the surface needle plate 6, and a secondary ejection bottom plate 71 is arranged at the bottom of the secondary ejection plate 7. In addition, the processing mold further includes a knockout pin 5 that ejects the product to be processed 8.

The ejector pins 5 include first ejector pins 51 that abut on the face needle base plate 61 through the bottom of the face needle plate 6, and second ejector pins 52 that abut on the secondary ejection base plate 71 through the bottom of the secondary ejection plate 7. The second ejector pin 52 is located at the downward warping deformation of the product 8 to be processed, which needs to be subjected to plane correction.

The bottom plate 42 is provided with a receiving groove 401 for receiving the secondary ejection bottom plate 71. Before the ejector rod ejects, the surface of the secondary ejection bottom plate 71 is flush with the surface of the bottom plate 42.

When the ejector rods eject, the secondary ejection bottom plate 71 firstly pushes the second ejector rod 52 to eject the downward warping deformation part of the product for a certain distance, until the secondary ejection plate 7 contacts with the surface needle bottom plate 61. In the process, the downward warping deformation part of the product is ejected out firstly. After the secondary ejection plate 7 contacts the surface needle bottom plate 61, the first ejector pin 51 and the second ejector pin 52 eject the product from the cavity together. Because the downward warping deformation is ejected one part first, the downward warping deformation of the product can be offset, and the effect of plane correction is achieved. Before the ejector rod is ejected, an adjusting gap 9 is formed between the secondary ejection plate 7 and the surface needle bottom plate 61, and the adjusting range of the flatness of the product is controlled by adjusting the width of the gap 9.

Compared with the prior art, the processing mold comprises a secondary ejection plate 7 arranged on one side of the thimble plate 6 far away from the lower mold 2, a thimble bottom plate 61 is arranged at the bottom of the thimble plate 6, a secondary ejection bottom plate 71 is arranged at the bottom of the secondary ejection plate 7, the ejector rod 5 comprises a first ejector rod 51 penetrating through the thimble plate 6 and abutting on the thimble bottom plate 61 and a second ejector rod 52 penetrating through the secondary ejection plate 7 and abutting on the secondary ejection bottom plate 71, the second ejector rod 52 is positioned at a downward warping deformation part of a product to be processed, which needs to be subjected to plane correction, and an adjusting gap 9 is formed between the secondary ejection plate 7 and the thimble bottom plate 61 before the ejector rods are ejected. Because the downward warping deformation part and the non-deformation part are ejected out in a time-sharing mode, a force opposite to the deformation trend is given to the product, the poor flatness of the product is effectively corrected, and the adjustment range of the flatness of the product can be controlled by adjusting the width of the gap 9. The method has the advantages of simple structure, stable operation, good effect, low labor cost and stable mass production.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are illustrative and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A processing die comprises an upper die with an upper die core, a lower die with a lower die core, a surface needle plate and an ejector rod for ejecting a product to be processed, wherein the upper die core and the lower die core move relatively under the driving of the upper die and the lower die to clamp and position the product to be processed; before the ejector rod ejects, an adjusting gap is formed between the secondary ejection plate and the surface needle bottom plate; when the ejector rods eject, the secondary ejection bottom plate firstly pushes the second ejector rod to eject the lower warping deformation part of the product for a certain distance, and the first ejector rod and the second ejector rod eject the product together until the secondary ejection plate is contacted with the dough pin bottom plate.

2. The processing die of claim 1, wherein the processing die comprises an I-shaped plate arranged on one side of the upper die, which is far away from the lower die, and a positioning ring arranged on the I-shaped plate.

3. The processing mold according to claim 1, further comprising a bottom plate for supporting, wherein the bottom plate is provided with a receiving groove for receiving the secondary ejection bottom plate.

4. The working mold as claimed in claim 3, wherein the surface of the secondary ejection bottom plate is flush with the surface of the bottom plate before the ejector pins eject.

5. The processing mold according to claim 1, wherein the lower mold core is provided with a cavity for accommodating a product to be processed.