CN211307202U

CN211307202U - Mould for removing shrinkage marks around parting surface of injection molding product

Info

Publication number: CN211307202U
Application number: CN201921666918.4U
Authority: CN
Inventors: 金应寿; 宋振国; 吕金玲
Original assignee: Changchun Faw Fusheng Swell Auto Parts Co ltd
Current assignee: Changchun Fusheng Anchuang Auto Parts Co.,Ltd.
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-08-21
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a get rid of sink mark mould around injection moulding product die joint, including movable mould board and fixed die plate, the top of movable mould board contacts with the bottom of fixed die plate, and one side that movable mould board and fixed die plate are close to each other is fixedly connected with movable mould abaculus and cover half abaculus respectively, the top fixedly connected with cover half mounting panel of fixed die plate, the bottom fixedly connected with supporting shoe of movable mould board, the bottom fixedly connected with movable mould mounting panel of supporting shoe, the sprue gate has been seted up on cover half mounting panel, fixed die plate and the cover half abaculus, cover half abaculus and movable mould abaculus phase-match, and the top of movable mould abaculus has the gradual change and subtracts the gluey processing position, the mounting groove has been seted up on the top of movable mould abaculus, and fixed mounting. The utility model discloses simple structure, novelty, the difficult deckle edge that appears of product when can guaranteeing the mould life-span saves man-hour, provides quality assurance for follow-up electroplating, the process of spraying paint.

Description

Mould for removing shrinkage marks around parting surface of injection molding product

Technical Field

The utility model belongs to the technical field of injection moulding product processing, concretely relates to get rid of sink mark mould around injection moulding product die joint.

Background

When a common plastic injection molding product is designed, the wall thickness is designed to be uniform in principle. The method aims to eliminate the defects of product surface color difference, bright spots, sink marks, flow marks and the like caused by uneven wall thickness for consistent product appearance quality. In contrast, products with uniform wall thickness often show sink marks around the parting plane. In order to prevent the circumferential sink marks, the injection pressure is generally increased during injection molding. As a result, not only the problems cannot be completely solved, but also the reduction of the service life of the mold due to the fuzz of the product and the expansion of the mold occurs. The sink mark defect of the peripheral ring of the parting surface of the product is enlarged after the subsequent product is electroplated or painted. Another remedy is to sand the vicinity of sink marks on the periphery of the injection-molded product with sand paper to reduce the visibility of the sink marks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a get rid of injection moulding product die joint shrinkage mark mould on every side, the above-mentioned bad problem of product of effective control.

In order to achieve the above object, the utility model provides a following technical scheme: including movable mould board and fixed die plate, the top of movable mould board contacts with the bottom of fixed die plate, and one side that movable mould board and fixed die plate are close to each other is fixedly connected with movable mould insert and cover half insert respectively, the top fixedly connected with cover half mounting panel of fixed die plate, the bottom fixedly connected with supporting shoe of movable mould board, the bottom fixedly connected with movable mould mounting panel of supporting shoe, the sprue gate has been seted up on cover half mounting panel, fixed die plate and the cover half insert, cover half insert and movable mould insert phase-match, and the top of movable mould insert has the gradual change and subtracts gluey processing position.

Preferably, the mounting groove has been seted up on the top of movable mould inserted block, and fixed mounting has servo cylinder on the bottom inner wall of mounting groove, and servo cylinder's the vertical just fixedly connected with push pedal that makes progress of output shaft.

Preferably, the bottom end of the fixed die plate is fixedly connected with a guide sleeve, the top end of the movable die plate is fixedly connected with a guide post, and the top end of the guide post extends into the guide sleeve.

Preferably, the top ends of the guide posts are of a circular truncated cone-shaped structure, and the distance between the top ends of the guide posts is smaller than that between the bottom ends of the guide posts.

Preferably, a thread groove is formed in one side of the movable template, and a hanging ring is installed in the thread groove.

Preferably, the top end of the fixed die mounting plate is fixedly connected with a positioning ring.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the structure is simple and novel. Compared with a mould with an unmodified structure, the design and processing cost is almost unchanged;

2. the yield of products is greatly improved in the injection molding production. The injection pressure is not increased, so that the product is not easy to generate burrs while the service life of the mold is ensured;

3. the working hours are saved. The time and the working procedure of sanding by sand paper for workers are eliminated, so that the workers can work more easily;

4. and quality assurance is provided for subsequent electroplating and paint spraying processes. The element material piece is qualified, so that the quality inspection process before the electroplating or paint spraying process is cancelled. Can be directly put into the next procedure by 100 percent;

the utility model has simple and novel structure, can ensure the service life of the die, simultaneously is not easy to generate rough edges,

saving working hours and providing quality assurance for subsequent electroplating and paint spraying processes.

Drawings

Fig. 1 is a main perspective sectional view of the present invention;

FIG. 2 is a partially enlarged schematic view of the position A before modification of the present invention;

FIG. 3 is the modified A position local magnification diagram of the utility model

Fig. 4 is a schematic diagram of the product defect in the prior art of the present invention.

In the figure: 1. a movable die mounting plate; 2. a support block; 3. moving the template; 4. fixing a template; 5. a fixed die mounting plate; 6. positioning rings; 7. a movable mold insert; 8. fixing the mold insert; 9. a guide sleeve; 10. a guide post; 11. mounting grooves; 12. a servo cylinder; 13. pushing the plate; 14. a hoisting ring; 15. a gradual glue reduction treatment position; 16. producing a product; 17. sink mark; 18. and a pouring gate.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be further adjusted according to concrete condition the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of claiming.

Referring to fig. 1-4, the utility model provides a technical solution of a mold for removing sink marks around a parting surface of an injection molding product: the movable mould plate comprises a movable mould plate 3 and a fixed mould plate 4, wherein the top end of the movable mould plate 3 is contacted with the bottom end of the fixed mould plate 4, one side of the movable mould plate 3, which is close to the fixed mould plate 4, is fixedly connected with a movable mould insert 7 and a fixed mould insert 8 respectively, the top end of the fixed mould plate 4 is fixedly connected with a fixed mould mounting plate 5, the bottom end of the movable mould plate 3 is fixedly connected with a supporting block 2, the bottom end of the supporting block 2 is fixedly connected with a movable mould mounting plate 1, the fixed mould mounting plate 5, the fixed mould plate 4 and the fixed mould insert 8 are provided with a sprue gate 18, molten plastic can be injected into a membrane cavity reserved between the movable mould insert 7 and the fixed mould insert 8 through the sprue gate 18, a product 16 can be formed after the molten plastic is cooled, a sink mark 17 is easily formed on the product 16 in the prior art, the fixed mould insert 8 is matched with the movable mould insert 7, the top end, and (3) performing local gradual glue reducing treatment on the wall thickness of the invisible surface near the parting line (the wall thickness of the maximum glue reducing 1/3). So that the product can be smoothly filled under the normal injection pressure of the plastic material. The problem of the reduction of the service life of the die caused by burrs and expansion of the product under high pressure is solved, wherein the fixed connection is specifically bolt fixed connection.

Wherein, mounting groove 11 has been seted up on the top of movable mould inserted block 7, has servo cylinder 12 through bolt and nut fixed mounting on the bottom inner wall of mounting groove 11, and the vertical upwards just welding of output shaft of servo cylinder 12 has push pedal 13, and after the completion of moulding plastics and cooling, movable mould board 3 is separated the back with fixed die plate 4 downwards, and control servo cylinder 12 extension can be through push pedal 13 with 16 jack-ups of product to can be convenient take off the product 16 that will process the completion, improve production efficiency.

Wherein, the bottom welding of fixed die plate 4 has uide bushing 9, and the top welding of movable mould board 3 has guide post 10, and in the top of guide post 10 extended to uide bushing 9, when fixed die plate 4 was close to when being in the same place with movable mould board 3, guide post 10 inserted can play the effect of location direction in the uide bushing 9 for the position can not produce the skew when fixed die plate 4 and the 3 blocks of movable mould board.

Wherein, the top of guide post 10 is round platform shape structure, and is less than between the bottom of guide post 10 between the top of guide post 10, and the round platform shape structure on guide post 10 top makes guide post 10 can be more light insert in uide bushing 9.

Wherein, the thread groove has been seted up to one side of movable mould board 3, and the thread groove internal thread is installed rings 14, and rings 14 are used for hanging movable mould board 3, because movable mould board 3 is heavier, rings 14's existence conveniently hangs and removes movable mould board 3.

Wherein, the top fixedly connected with position circle 6 of cover half mounting panel 5, position circle 6 are used for the location, and when the cover half mounting panel 5 was installed at the installation station, position circle 6 can with the installation station on the constant head tank phase-match of reserving to reach the effect of location.

The utility model discloses a theory of operation and use flow:

1. the average thickness of the product 16 is measured.

2. The thickness of the edge of the product 16 is measured.

3. The inner side wall of the invisible surface of the product is generally subjected to gradual glue reducing treatment of wall thickness in the range from the parting surface to 1/5 of the height of the side wall. The thinnest part of the parting surface ensures 2/3 product wall thickness.

4. And (4) subtracting the modified product by using the main insert of the die to obtain the optimized die.

Has a shape.

5. The mold can be used for injection molding to produce a qualified injection molding product without sink marks on the periphery of the parting surface.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a get rid of sink mark mould around injection moulding product die joint which characterized in that: including movable mould board and fixed die plate, the top of movable mould board contacts with the bottom of fixed die plate, and one side that movable mould board and fixed die plate are close to each other is fixedly connected with movable mould insert and cover half insert respectively, the top fixedly connected with cover half mounting panel of fixed die plate, the bottom fixedly connected with supporting shoe of movable mould board, the bottom fixedly connected with movable mould mounting panel of supporting shoe, the sprue gate has been seted up on cover half mounting panel, fixed die plate and the cover half insert, cover half insert and movable mould insert phase-match, and the top of movable mould insert has the gradual change and subtracts gluey processing position.

2. The mold for removing the sink marks around the parting surface of the injection molding product as claimed in claim 1, wherein: the mounting groove has been seted up on the top of movable mould inserted block, and fixed mounting has servo cylinder on the bottom inner wall of mounting groove, and servo cylinder's the vertical just fixedly connected with push pedal that makes progress of output shaft.

3. The mold for removing the sink marks around the parting surface of the injection molding product as claimed in claim 1, wherein: the bottom fixedly connected with uide bushing of fixed die plate, the top fixedly connected with guide post of movable mould board, the top of guide post extends to in the uide bushing.

4. The mold for removing sink marks around the parting surface of an injection molding product according to claim 3, wherein: the top ends of the guide posts are of a circular truncated cone-shaped structure, and the space between the top ends of the guide posts is smaller than the space between the bottom ends of the guide posts.

5. The mold for removing the sink marks around the parting surface of the injection molding product as claimed in claim 1, wherein: and a thread groove is formed in one side of the movable template, and a hanging ring is installed in the thread groove.

6. The mold for removing the sink marks around the parting surface of the injection molding product as claimed in claim 1, wherein: and the top end of the fixed die mounting plate is fixedly connected with a positioning ring.