CN216329704U - Injection compression molding mould - Google Patents

Abstract

The utility model relates to the field of dies, in particular to an injection compression forming die which comprises a first male die movable plate, wherein a second male die movable plate is arranged below the first male die movable plate, a male die fixed plate is arranged below the second male die movable plate, a compression block is arranged on the lower side of the first male die movable plate, a male die core is arranged in the middle of the male die fixed plate, a female die core matched with the male die core is arranged on the upper side of a female die, and an elastic part capable of pushing the male die fixed plate to be close to the female die is arranged between the male die fixed plate and the first male die movable plate. The utility model discloses an injection compression molding mould through setting up the public movable plate of mould, the fixed plate of public mould and elastomeric element of second, has realized the injection compression molding to the product, has reduced the injecting glue point of product, has saved the raw materials, has also avoided product production in-process product bonding line too much simultaneously, has stranded gas scheduling problem, has guaranteed the pleasing to the eye of product.

Description

Injection compression molding mould

Technical Field

The utility model relates to the field of molds, in particular to an injection compression molding mold.

Background

A mobile phone is a common electronic device in daily life. As the demand of users increases, the thickness of the mobile phone is gradually reduced, which requires the thickness of the components of the mobile phone to be reduced accordingly. At present, the thickness of a mobile phone rear cover produced by my department is usually 0.8mm, and if a common injection molding mold is adopted, 7-8 glue inlet points are required to be set for completely filling the mold. However, in the method, due to the fact that the number of glue inlet points is too many, the size of a runner for glue injection in the mold is large, and material waste is serious; moreover, excessive glue feeding points can cause the problems of multiple product bonding lines, air trapping and the like, the bonding lines can affect the structural strength of the product, and the air trapping can cause product burning and affect the appearance of the product. In the actual production process, in order to meet the requirements of customers, a coating and decorating process is added on the surface of a product, a coating is added to cover the appearance defects of the product, and the corresponding cost is increased.

In addition, if a conventional injection compression process is used, a flash edge is generally designed at the edge of the product to reduce the stress of the product during compression. However, the existence of the flash edge increases subsequent processing procedures of the product, and increases the preparation period and preparation cost of the product.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides an injection compression molding die, which realizes the step-by-step injection molding of a product by arranging a first male die movable plate, a second male die movable plate, a male die fixed plate and an elastic part, avoids the existence of flash edges after the product is molded and does not need the subsequent processing procedure of the flash edges; the problem of trapping gas when the product is formed is solved, and the attractiveness of the product when leaving a factory is ensured.

The technical scheme of the utility model is as follows:

the utility model provides an injection compression forming die, includes the movable board of first public mould, the movable board below of first public mould is equipped with the movable board of second public mould, the movable board of second public mould has the rigid board of public mould, the movable board downside of first public mould is equipped with a compression piece, the rigid board intermediate position of public mould is equipped with a public mould benevolence, the master model upside be equipped with public mould benevolence complex cavity, public mould rigid board with be equipped with between the movable board of first public mould and promote public mould rigid board is close to the elastomeric element of master model.

Preferably, the second male die movable plate is provided with a through hole through which the elastic member can pass, the male die fixed plate is provided with a fixing portion corresponding to the through hole, one end of the elastic member is connected to the fixing portion to fix one end of the elastic member, and the other end of the elastic member passes through the through hole and contacts the first male die movable plate.

Preferably, at least two guide posts are arranged on the first male die movable plate, guide sleeves are arranged at positions of the male die fixed plate, the second male die movable plate and the female die corresponding to the guide posts, and the guide posts can penetrate through the guide sleeves to guide the first male die movable plate to move along the axial direction of the guide sleeves.

Preferably, the elastic member is one of a spring or a cylinder.

Preferably, the fixing part is one or two of a blind hole and a boss.

Preferably, the number of the elastic members is at least two.

The utility model achieves the following beneficial effects:

by arranging the first male die movable plate, the male die fixed plate and the elastic part, after the male die core and the female die are closed, the first male die movable plate can also push the compression block to move towards the female die core, so that the injection compression molding of a product is realized, the problem of air trapping of the product during production is solved, and the attractiveness of the appearance of the product is ensured;

through the arrangement of the second male die movable plate, the male die fixed plate and the elastic part, a plurality of glue injection points are not needed during injection molding of a product, the size of a runner in the product die is reduced, raw material waste during preparation of the product is avoided, and the cost of an enterprise is saved;

by adopting injection compression molding, the prepared product has no flash edge, subsequent processing is not needed, and the preparation period of the product is shortened.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is an exploded view from the opposite perspective of fig. 1.

FIG. 3 is a partial view of FIG. 2 showing the male mold core and compression block.

In the figure, 1, a first male die movable plate; 2. a second male mold movable plate; 3. the male die is fixed; 4. an elastic member; 6. a female die; 21. a through hole; 22. a guide post; 31. compressing the block; 32. a fixed part; 33. a guide sleeve; 61. a cavity insert; 62. a male mold core.

Detailed Description

To facilitate an understanding of the present invention by those skilled in the art, specific embodiments thereof are described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, an elastic member 4 is disposed between the male mold stationary plate 3 and the first male mold movable plate 1, and the elastic member 4 can make the male mold core 62 and the female mold core 6 in a close contact state after the mold is closed, so that even when the first male mold movable plate 1 is retracted, the male mold stationary plate 3 is kept stationary, the male mold core 62 and the female mold core 61 are always in a close state, and are not pressed to be opened during glue injection, thereby preventing burrs from being formed on the edge of a product.

In this embodiment, a compression block 31 is disposed on the lower side of the second male mold movable plate 2, a male mold core 62 is disposed on the male mold stationary plate 3 at a position corresponding to the compression block 31, a female mold core 61 matched with the male mold core 62 is disposed on the female mold 6, the compression block 31 can axially move back and forth in a through hole in the male mold core 62, so as to perform compression and glue injection at a later stage, and the male mold core 62, the female mold core 61 and the compression block 31 form a product molding cavity to process a product with a specified shape.

In the present embodiment, in order to guide the moving direction of the first male die movable plate 1 and prevent the moving position of the first male die movable plate 1 from being displaced, one guide post 22 may be provided at each end of the first male die movable plate 1, or one guide post 22 may be provided at each of four corners of the first male die movable plate 1. And a guide sleeve 33 matched with the guide column 22 is arranged at the corresponding position of the male die fixed plate 3 and the female die 6, so that the first male die movable plate 1, the male die fixed plate 3 and the female die 6 can move in parallel, and the same thickness of injection molded products is ensured. Instead of providing two guide posts 22 or four guide posts 22, the number of guide posts 22 and the number of corresponding guide sleeves 33 may be determined according to actual production conditions, and is not limited to the number in the present embodiment.

In the present embodiment, in order to ensure that the elastic member 4 is stably attached between the first male mold movable plate 1 and the male mold stationary plate 3, the second male mold movable plate 2 is provided with a through hole 21 that is positioned to match the elastic member 4, the male mold stationary plate 3 is provided with a fixing portion 32 that is positioned to match the elastic member 4, one end of the elastic member 4 is connected to the fixing portion 32, and the other end thereof passes through the through hole 21 and contacts the first male mold movable plate 1.

In this embodiment, in order to ensure the parallel movement between the second male movable platen 2 and the male stationary platen 3, the elastic members 4 are uniformly distributed around the compression block 31, and the direction of the force applied by the elastic members 4 to the male stationary platen 3 is ensured to be the same as the moving direction of the second male movable platen 2.

In this embodiment, the elastic member 4 may be a spring or an oil cylinder, and is preferably a spring. The elastic components 4 are distributed around the compression block 31, the number of the elastic components can be 8, and two elastic components are symmetrically arranged at each edge of the compression block 31; the number of the compression blocks is 4, the compression blocks are distributed at the edge positions of four corners of each compression block 31, and the effect of the compression blocks is that when the second male die movable plate 2 is retracted, the male die core 62 and the female die core 61 are tightly attached to each other, so that burrs are prevented from being generated during glue injection.

In this embodiment, the fixing portion 32 may be a blind hole or a cylindrical boss, and one end of the elastic component 4 is located in the blind hole or sleeved outside the boss, so as to fix the elastic component 4.

The working principle of the die is as follows: firstly, the movable plate 1 of the first male die applies force to move forwards to push the fixed plate 3 of the male die to move towards the female die 6 until the male die core 62 and the female die core 61 are in close contact with each other to form a product cavity; secondly, the first male die movable plate 1 continues to push the compression block 31 to advance for a certain distance, the thickness of a product cavity in the compression block 1 area is larger than that of a product cavity in the range of the male die core 62 when the compression block stops, the male die fixed plate 3 and the female die 6 are still tightly closed under the action of the elastic component 4, and the injection glue enters the product cavity; thirdly, compression molding is carried out, after injection is finished, the first male mold movable plate 1 pushes the compression block 31 to move again, the compression block 31 moves towards the female mold core 61, and the thickness of a product cavity is reduced to the designated thickness; and fourthly, opening the die, taking out the product, and repeating the steps.

In summary, the utility model achieves the following beneficial effects:

by arranging the first male die movable plate, the male die fixed plate and the elastic part, the first male die movable plate can also push the compression block to move towards the female die core after the male die fixed plate and the female die are closed, so that the injection compression molding of a product is realized, the problem of air trapping of the product during production is solved, and the attractiveness of the appearance of the product is ensured;

through the arrangement of the second male die movable plate, the male die fixed plate and the elastic part, a plurality of glue injection points are not needed during injection molding of a product, the size of a runner in the product die is reduced, raw material waste during preparation of the product is avoided, and the cost of an enterprise is saved;

by adopting injection compression molding, the prepared product has no flash edge, subsequent processing is not needed, and the preparation period of the product is shortened.

The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (6)

1. An injection compression molding die, characterized in that: the novel male die is characterized by comprising a first male die movable plate (1), wherein a second male die movable plate (2) is arranged below the first male die movable plate (1), a male die fixed plate (3) is arranged below the second male die movable plate (2), a compression block (31) is arranged on the lower side of the first male die movable plate (1), a male die core (62) is arranged in the middle of the male die fixed plate (3), a female die core (61) matched with the male die core (62) is arranged on the upper side of a female die (6), and an elastic part (4) capable of pushing the male die fixed plate (3) to be close to the female die (6) is arranged between the male die fixed plate (3) and the first male die movable plate (1).

2. An injection compression molding mold as claimed in claim 1, wherein: the second male die movable plate (2) is provided with a through hole (21) through which the elastic member (4) can pass, the male die fixed plate (3) is provided with a fixing part (32) corresponding to the through hole (21), one end of the elastic member (4) is connected with the fixing part (32) to fix one end of the elastic member (4), and the other end of the elastic member (4) passes through the through hole (21) and is in contact with the first male die movable plate (1).

3. An injection compression molding mold as claimed in claim 1, wherein: the first male die movable plate (1) is provided with at least two guide columns (22), guide sleeves (33) are arranged at the positions, corresponding to the guide columns (22), of the male die fixed plate (3), the second male die movable plate (2) and the female die (6), and the guide columns (22) can penetrate through the guide sleeves (33) so as to guide the first male die movable plate (1) to move along the axial direction of the guide sleeves (33).

4. An injection compression molding apparatus as claimed in claim 2, wherein: the elastic component (4) is one of a spring or an oil cylinder.

5. An injection compression molding apparatus as claimed in claim 2, wherein: the fixing part (32) is one or two of a blind hole or a lug boss.

6. An injection compression molding mold as claimed in claim 1, wherein: the number of the elastic components (4) is at least two.

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