CN210501199U

CN210501199U - Injection mold is used in processing of thermoplastic elastomer

Info

Publication number: CN210501199U
Application number: CN201921326876.XU
Authority: CN
Inventors: 杨建江; 盛萌; 张洪云
Original assignee: Shaoxing Jucheng New Material Technology Co ltd
Current assignee: Shaoxing Jucheng New Material Technology Co ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-05-12
Anticipated expiration: 2029-08-15

Abstract

The utility model discloses an injection mold is used in processing of thermoplastic elastomer, including cover half, movable mould and first guide arm, the movable mould includes movable mould board and movable mould bedplate, and the cover half includes fixed die plate and cover half bedplate, and the movable mould board includes movable mould body and movable mould fixed plate, and the movable mould body is equipped with the mould groove, and the mould groove encloses there is the bounding wall, fixed die plate and movable mould board phase-match. When the thermoplastic elastomer is injected into the mold groove, the overflowing thermoplastic elastomer enters the coaming, and the overflowing part can be trimmed after being taken out of the injection mold, so that the shape and the quality of the thermoplastic elastomer in the mold groove are not influenced. The thermoplastic elastomer in the die groove is ejected through a first ejector rod penetrating through the movable die base plate, and the overflowed part is ejected through a second ejector rod penetrating through the movable die base plate after entering the anti-overflow groove, so that the thermoplastic elastomer in the anti-overflow groove is prevented from sticking a die. The utility model discloses rational in infrastructure simple, convenient operation.

Description

Injection mold is used in processing of thermoplastic elastomer

Technical Field

The utility model belongs to the injection mold field, concretely relates to injection mold is used in processing of thermoplastic elastomer.

Background

The thermoplastic elastomer is also called as synthetic rubber, namely has the performances of high elasticity, aging resistance, oil resistance and the like of the traditional rubber, has the characteristic of plastic molding at high temperature, and is convenient to process. Since the thermoplastic elastomer has the dual properties and wide characteristics of both rubber and plastics, the thermoplastic elastomer is widely used for manufacturing daily necessities such as rubber shoes, adhesive tapes and the like. Thermoplastic elastomers are processed in a variety of ways, the main two being extrusion and injection moulding.

The thermoplastic elastomer has high viscosity and good fluidity, so that the problems of flash and mold sticking are easily caused in the injection molding process of the thermoplastic elastomer, and the product quality is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection mold is used in processing of thermoplastic elastomer, this injection mold has set up anti-overflow groove, prevents that thermoplastic elastomer from too much and leading to product quality to reduce at the in-process flash of moulding plastics, and is rational in infrastructure simple.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides an injection mold is used in processing of thermoplastic elastomer, includes cover half, movable mould and first guide arm, its characterized in that: the movable mould includes movable mould board and movable mould bedplate, and the cover half includes fixed mould board and cover half bedplate, and the movable mould board includes movable mould body and movable mould fixed plate, and the movable mould body is equipped with the mould groove, and the mould groove encloses there is the bounding wall, fixed mould board and movable mould board phase-match. When the thermoplastic elastomer is injected into the mold groove, the overflowing thermoplastic elastomer enters the coaming, and the overflowing part can be trimmed after being taken out of the injection mold, so that the shape and the quality of the thermoplastic elastomer in the mold groove are not influenced.

Further, the bottom of the mold groove is slidably connected with a first ejector rod, the coaming and the mold groove form an anti-overflow groove, the bottom of the anti-overflow groove is slidably connected with a second ejector rod, and the first ejector rod and the second ejector rod penetrate through the movable mold base plate. The thermoplastic elastomer in the die groove is ejected through a first ejector rod penetrating through the movable die base plate, and the overflowed part is ejected through a second ejector rod penetrating through the movable die base plate after entering the anti-overflow groove, so that the thermoplastic elastomer in the anti-overflow groove is prevented from sticking a die.

Furthermore, the bottom of first ejector pin and second ejector pin even has first push pedal, and first ejector pin and second ejector pin cover are equipped with first spring, and the top of first spring offsets with the bottom of movable mould bedplate, and the bottom of first spring offsets with the top of first push pedal. When the movable mold moves downwards for a certain distance, the first push plate is abutted, the first spring is compressed, the first ejector rod and the second ejector rod stop moving, the movable mold still moves downwards, and the extended first ejector rod and the extended second ejector rod push the thermoplastic elastomer out of the movable mold together.

Furthermore, the bottom of first push pedal is equipped with the second push pedal, and first guide arm runs through cover half, movable mould and second push pedal, and the top of first guide arm is equipped with first spacing ring, and first guide arm is equipped with the second spacing ring with second push pedal junction, and first guide arm cover is equipped with the second spring, and the top of second spring offsets with the bottom of movable mould bedplate, and the bottom of second spring offsets with the top of second push pedal. The arrangement of the first limiting ring prevents the guide rod from being separated from the fixed die when the movable die moves, and the arrangement of the second limiting ring facilitates the compression of the second spring.

Furthermore, the bottom of the first push plate is connected with a second guide rod, and the second guide rod penetrates through the second push plate. When the second push plate is pressed against, the first push plate moves along the second guide rod, and the stability of the first push plate is enhanced.

Further, the first ejector rod is provided with a first protruding ring, the second ejector rod is provided with a second protruding ring, the mold groove is provided with a first groove, the anti-overflow groove is provided with a second groove, the first protruding ring is matched with the first groove, and the second protruding ring is matched with the second groove. The first protruding ring and the second protruding ring respectively play a limiting role for the first ejector rod and the second ejector rod, and when the first spring is loosened, the tops of the first ejector rod and the second ejector rod are respectively attached to the bottom surfaces of the mold groove and the anti-overflow groove.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

the surrounding plates are arranged outside the die groove to form the anti-overflow groove, when the thermoplastic elastomer is injected into the die groove, the overflowing thermoplastic elastomer enters the anti-overflow groove, and the overflowing part can be trimmed after the thermoplastic elastomer is taken out from the injection die, so that the shape and the quality of the thermoplastic elastomer in the die groove are not influenced, and the product quality is ensured. The thermoplastic elastomer in the die groove is ejected through a first ejector rod penetrating through the movable die base plate, and the overflowed part is ejected through a second ejector rod penetrating through the movable die base plate after entering the anti-overflow groove, so that the thermoplastic elastomer in the anti-overflow groove is prevented from sticking a die. The utility model discloses rational in infrastructure simple, convenient operation.

Drawings

The present invention will be further explained with reference to the drawings.

FIG. 1 is a schematic structural view of an injection mold for processing a thermoplastic elastomer;

FIG. 2 is a schematic view of an open injection mold for thermoplastic elastomer processing;

fig. 3 is a schematic structural view of the movable die plate.

Detailed Description

As shown in fig. 1 to 3, the injection mold for processing the thermoplastic elastomer comprises a fixed mold 1, a movable mold 2 and a first guide rod 3, wherein the movable mold 2 comprises a movable mold plate 4 and a movable mold base plate 5, the fixed mold 1 comprises a fixed mold plate 6 and a fixed mold base plate 7, the fixed mold plate 6 and the fixed mold base plate 7 are provided with an injection molding opening 8, the movable mold plate 4 comprises a movable mold body 9 and a movable mold fixing plate 10, the movable mold body 9 is provided with a mold groove 11, a surrounding plate 12 is surrounded on the mold groove 11, and the fixed mold plate 6 is matched with the movable mold plate 4. When the thermoplastic elastomer is injected into the mold groove 11, the overflowing thermoplastic elastomer enters the coaming 12, and the overflowing part can be trimmed after being taken out of the injection mold, so that the shape and the quality of the thermoplastic elastomer in the mold groove 11 are not influenced.

The bottom of the die groove 11 is connected with a first ejector rod 13 in a sliding mode, the coaming 12 and the die groove 11 form an anti-overflow groove 14, the bottom of the anti-overflow groove 14 is connected with a second ejector rod 15 in a sliding mode, and the first ejector rod 13 and the second ejector rod 15 penetrate through the movable die base plate 5. The thermoplastic elastomer in the die groove 11 is ejected out through a first ejector rod 13 penetrating through the movable die base plate 5, and the overflowing part enters the anti-overflow groove 14 and then is ejected out through a second ejector rod 15 penetrating through the movable die base plate 5, so that the thermoplastic elastomer in the anti-overflow groove 14 is prevented from being adhered to a die.

The bottom of the first ejector rod 13 and the bottom of the second ejector rod 15 are connected with a first push plate 16, the first ejector rod 13 and the second ejector rod 15 are sleeved with a first spring 17, the top of the first spring 17 is abutted against the bottom of the movable mold base plate 5, and the bottom of the first spring 17 is abutted against the top of the first push plate 16. When the movable mold 2 moves downwards for a certain distance, the first push plate 16 is abutted, the first spring 17 is compressed, the first ejector rod 13 and the second ejector rod 15 stop moving, the movable mold 2 still moves downwards, and the extended first ejector rod 13 and the extended second ejector rod 15 push the thermoplastic elastomer out of the movable mold 2 together.

The bottom of the first push plate 16 is provided with a second push plate 18, the first guide rod 3 penetrates through the fixed die 1, the movable die 2 and the second push plate 18, the top of the first guide rod 3 is provided with a first limiting ring 19, the joint of the first guide rod 3 and the second push plate 18 is provided with a second limiting ring 20, the first guide rod 3 is sleeved with a second spring 21, the top of the second spring 21 is abutted to the bottom of the movable die base plate 5, and the bottom of the second spring 21 is abutted to the top of the second push plate 18. The first limit ring 19 is provided to prevent the guide bar from being separated from the fixed mold 1 when the movable mold 2 moves, and the second limit ring 20 is provided to facilitate compression of the second spring 21.

The bottom of the first push plate 16 is connected with a second guide rod 22, and the second guide rod 22 penetrates through the second push plate 18. When the second push plate 18 is abutted, the first push plate 16 moves along the second guide rod 22, enhancing the stability of the first push plate 16. The first ejector rod 13 is provided with a first convex ring 23, the second ejector rod 15 is provided with a second convex ring 24, the mold groove 11 is provided with a first groove 25, the anti-overflow groove 14 is provided with a second groove 26, the first convex ring 23 is matched with the first groove 25, and the second convex ring 24 is matched with the second groove 26. The first raised ring 23 and the second raised ring 24 respectively limit the first ejector rod 13 and the second ejector rod 15, and when the first spring 17 is loosened, the tops of the first ejector rod 13 and the second ejector rod 15 are respectively attached to the bottom surfaces of the mold groove 11 and the anti-overflow groove 14.

When the thermoplastic elastomer is injected, the movable mold 2 presses the fixed mold 1, and the thermoplastic elastomer enters the mold groove 11 from the injection port 8. If the thermoplastic elastomer overflows, the overflow portion enters the overflow prevention groove 14. After the thermoplastic elastomer is cooled, the movable mold 2 carries the thermoplastic elastomer to move downwards along the first guide rod 3, the second push plate 18 is stopped when the movable mold moves for a certain position, the first stop plate continuously moves downwards along the second guide rod 22, and the second spring 21 is compressed. When the first baffle is stopped by the second baffle, the movable die plate 4 continues to move downwards, the first ejector rods 13 and the second ejector rods 15 are not moved, the first springs 17 are compressed, and therefore the first ejector rods 13 are ejected from the die grooves 11, the second ejector rods 15 are ejected from the overflow preventing grooves 14, and the cooled thermoplastic elastomer is ejected out of the movable die plate 4. And finally, moving the movable die 2 upwards to press the fixed die 1, restoring the first spring 17 and the second spring 21 to the original positions, and starting the second injection molding.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered by the protection scope of the present invention.

Claims

1. The utility model provides an injection mold is used in processing of thermoplastic elastomer, includes cover half, movable mould and first guide arm, its characterized in that: the movable mould comprises a movable mould plate and a movable mould base plate, the fixed mould comprises a fixed mould plate and a fixed mould base plate, the movable mould plate comprises a movable mould body and a movable mould fixing plate, the movable mould body is provided with a mould groove, a surrounding plate is arranged around the mould groove, and the fixed mould plate is matched with the movable mould plate.

2. The injection mold for processing a thermoplastic elastomer as claimed in claim 1, wherein: the mould groove bottom sliding connection has first ejector pin, the bounding wall with the mould groove constitutes anti-overflow tank, anti-overflow tank bottom sliding connection has the second ejector pin, first ejector pin with the second ejector pin runs through the movable mould bedplate.

3. The injection mold for processing a thermoplastic elastomer as claimed in claim 2, wherein: the bottom of the first ejector rod and the bottom of the second ejector rod are connected with a first push plate, a first spring is sleeved on the first ejector rod and the second ejector rod, the top of the first spring is abutted to the bottom of the movable mold base plate, and the bottom of the first spring is abutted to the top of the first push plate.

4. The injection mold for processing a thermoplastic elastomer as claimed in claim 3, wherein: the bottom of first push pedal is equipped with the second push pedal, first guide arm runs through the cover half the movable mould with the second push pedal, the top of first guide arm is equipped with first spacing ring, first guide arm is equipped with the second spacing ring with second push pedal junction, first guide arm cover is equipped with the second spring, the top of second spring with the bottom of movable mould bedplate offsets, the bottom of second spring with the top of second push pedal offsets.

5. The injection mold for processing a thermoplastic elastomer as claimed in claim 4, wherein: the bottom of the first push plate is connected with a second guide rod, and the second guide rod penetrates through the second push plate.

6. The injection mold for processing a thermoplastic elastomer as claimed in claim 3, wherein: the top of first ejector pin is equipped with first bellying ring, the top of second ejector pin is equipped with the bellying ring of second, the mould groove is equipped with first recess, the anti-overflow groove is equipped with the second recess, first bellying ring with first recess phase-match, the bellying ring of second with second recess phase-match.