CN210590304U

CN210590304U - A mistake proofing position injection mold for car injection molding

Info

Publication number: CN210590304U
Application number: CN201921184714.7U
Authority: CN
Inventors: 邢天博; 邢俊东
Original assignee: Suzhou Rongxuan Electrical Appliance Co ltd
Current assignee: Suzhou Rongxuan Electrical Appliance Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-05-22
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses a dislocation prevention injection mold for car injection molding, including cope match-plate pattern, lower bolster. The lower end of the upper template is provided with an upper mold core, and the upper end of the lower template is provided with a lower mold core which is matched with the upper mold core to form a closed cavity. The top of the lower mold core is provided with a lower mold cavity groove used for forming a closed mold cavity, two sides of the lower mold cavity groove are symmetrically provided with lower pressing surfaces pressed with the upper mold core, the bottom of the upper mold core is provided with an upper mold cavity groove matched with the lower mold cavity groove, and two sides of the upper mold cavity groove are symmetrically provided with upper pressing surfaces matched with the lower pressing surfaces. And a limiting assembly for preventing the upper die core from deviating is arranged between the lower pressing surface and the upper pressing surface. The utility model discloses a spacing subassembly has avoided the injection molding quality problem because of last mold core position offset leads to, has improved injection mold's compound die precision.

Description

A mistake proofing position injection mold for car injection molding

Technical Field

The utility model relates to a car injection molding production field especially relates to a dislocation prevention injection mold for car injection molding.

Background

Many automobile parts are plastic parts, and a part of the plastic parts are processed by an injection mold, wherein the injection mold mainly forms a closed cavity by an upper mold core and a lower mold core under normal conditions, then high-temperature liquid plastic is injected into the closed cavity, and the injection molded part with a specific shape is formed after cooling. However, the existing injection mold is lack of an effective limiting device, and an upper mold core is easily affected by external force to generate position deviation during mold closing, so that the shape of a closed cavity is changed, and the quality of a final injection molded injection part is affected.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a dislocation preventing injection mold for automobile injection molding has avoided the injection molding quality problem that leads to because of last mold core position offset, has improved injection mold's compound die precision.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a mistake proofing position injection mold for car injection molding, includes relative cope match-plate pattern, the lower bolster that sets up, wear to be equipped with on the cope match-plate pattern with the positioning guide pillar of lower bolster rigid coupling. The lower end of the upper template is provided with an upper mold core, and the upper end of the lower template is provided with a lower mold core which is matched with the upper mold core to form a closed cavity. The top of the lower mold core is provided with a lower cavity groove for forming a closed cavity, and two sides of the lower cavity groove are symmetrically provided with lower pressing surfaces for pressing the upper mold core. The bottom of the upper mold core is provided with an upper cavity groove matched with the lower cavity groove, and two sides of the upper cavity groove are symmetrically provided with upper press-fit surfaces matched with the lower press-fit surfaces. And a limiting assembly for preventing the upper die core from deviating is arranged between the lower pressing surface and the upper pressing surface. The limiting assembly comprises a limiting groove which is formed downwards along the downward pressing surface, transverse grooves communicated with the limiting groove are symmetrically formed in the side wall of the limiting groove, and positioning beads extending to the inside of the limiting groove are arranged in the transverse grooves. The upper pressing surface is also provided with a limiting convex column matched with the limiting groove, and the side wall of the limiting convex column is provided with a spherical groove matched with the positioning bead.

Furthermore, the bottom of the limiting groove is also provided with a convex block protruding upwards, and the bottom of the limiting convex column is provided with an embedding groove used for embedding the convex block. When the limiting convex column is positioned in the limiting groove, the convex block is embedded in the embedded groove. The embedding degree of the limiting groove and the limiting convex column is further improved through the matching of the convex block and the embedded groove, the transverse movement of the limiting convex column is avoided, and the transverse movement of the upper mold core is further avoided.

Furthermore, the top of the lug is provided with a round platform-shaped structure which is convenient to be embedded into the caulking groove, and the side wall of the lug is sleeved with a first elastic rubber layer. And a second elastic rubber layer for compressing the round table-shaped structure is arranged at the top of the caulking groove. When the die is closed, the lug can be conveniently embedded into the caulking groove through the arrangement of the round platform-shaped structure, and the lug can be tightly compacted in the caulking groove through the first elastic rubber layer to prevent abnormal movement; the round platform-shaped structure can be elastically compressed through the second elastic rubber layer.

Furthermore, the middle part of the upper template is provided with an injection molding main runner which is communicated up and down and extends to the inside of the upper mold core, and the injection molding main runner positioned in the inside of the upper mold core is provided with a plurality of injection molding sub-runners communicated with the closed cavity. The injection speed of the high-temperature liquid is slowed down through the arrangement of the injection molding main runner and the injection molding sub-runner, and further the instantaneous pressure when the high-temperature liquid is injected into the closed cavity is reduced.

Further, the injection molding sub-runners are circumferentially and uniformly distributed on the injection molding main runner, and the radial dimension of the injection molding sub-runners is smaller than that of the injection molding main runner.

Further, the upper die plate and the upper die core are fixed through bolts; the lower template and the lower die core are fixed through bolts. The upper mold core and the lower mold core can be detachably connected through the bolt fixation, and the upper mold core and the lower mold core can be conveniently replaced.

The beneficial effects of the utility model reside in that: the moving range of the upper die plate during die assembly is preliminarily limited through the positioning guide columns, so that the moving range of the upper die core is further limited; the upper cavity groove and the lower cavity groove are limited to form a closed cavity through the pressing of the upper pressing surface and the lower pressing surface; the upper mold core is prevented from shifting due to external force after mold closing through the limiting component, transverse sliding of the upper mold core plate is avoided through the matching of the limiting groove and the limiting convex column, up-and-down sliding of the upper mold core plate is avoided through the matching of the positioning beads and the spherical grooves, and further position stability when the upper mold core and the lower mold core are closed is realized, the quality problem of injection molding parts caused by position shifting of the upper mold core is avoided, and the mold closing precision of the injection mold is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

In the figure:

1-upper template; 2-a lower template; 3-positioning the guide post; 31-guide post positioning seats; 4, mounting a mold core; 41-upper cavity groove; 42-upper press-fit face; 5, lower mold core; 51-lower cavity groove; 52-lower press fit face; 6-a limiting component; 61-a limiting groove; 62-a bump; 621-a truncated cone shaped structure; 63-a positioning bead; 64-limit convex columns; 641-spherical groove; 65-caulking groove; 651-two elastomeric rubber layers; 7-injection molding the main runner; 71-a sealing plug; 72-injection molding runner.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Examples

Referring to the attached drawing 1, the utility model discloses a prevent dislocation injection mold for car injection molding, including relative cope match-plate pattern 1, the lower bolster 2 that sets up, wear to be equipped with on the cope match-plate pattern 1 with the positioning guide pillar 3 of 2 rigid couplings of lower bolster. An upper mold core 4 is installed at the lower end of the upper mold plate 1, and a lower mold core 5 matched with the upper mold core 4 to form a closed cavity is installed at the upper end of the lower mold plate 2. The top of the lower mold core 5 is provided with a lower cavity groove 51 for forming a closed cavity, and two sides of the lower cavity groove 51 are symmetrically provided with lower pressing surfaces 52 for pressing the upper mold core 4. The bottom of the upper mold core 4 is provided with an upper cavity groove 41 matched with the lower cavity groove 51, and two sides of the upper cavity groove 41 are symmetrically provided with upper press-fit surfaces 42 matched with the lower press-fit surfaces 52. And a limiting component 6 for preventing the upper mold core from deviating is arranged between the lower pressing surface 52 and the upper pressing surface 42.

Referring to fig. 2, the limiting component 6 includes a limiting groove 61 formed downward along the lower press-fit surface 52, lateral grooves are symmetrically formed on the side walls of the limiting groove 61 and communicated with the limiting groove, and a protrusion 62 protruding upward is formed at the bottom of the limiting groove. The top of the bump 62 is provided with a truncated cone-shaped structure 621, and the side wall of the truncated cone-shaped structure is sleeved with a first elastic rubber layer.

And a positioning bead 63 extending to the inside of the limiting groove 61 is arranged in the transverse groove. The positioning ball 63 comprises a positioning shell fixedly connected in the transverse groove, a spring is arranged in the positioning shell, one end of the spring is abutted against the inside of the positioning shell, and a ball fixedly connected with the spring is arranged at the other end of the spring. When the spring is in a natural state, one end of the ball is protruded out of the positioning shell and is arranged in the limiting groove.

The limiting component 6 further comprises a limiting convex column 64 which protrudes downwards along the upper press-fit surface 42 and is matched with the limiting groove 61, and a spherical groove 641 matched with the positioning bead 63 is arranged on the side wall of the limiting convex column 64. The bottom of the limiting convex column 64 is provided with an embedding groove 65 for embedding the convex block 62, and the top of the embedding groove 65 is provided with a second elastic rubber layer 651 for compressing the circular truncated cone-shaped structure 621.

When the upper mold core 4 moves downwards along with the upper mold plate 1, the limiting convex column 64 moves downwards to the limiting groove 61, the embedded groove 65 moves downwards until the lug 62 is embedded into the embedded groove 65, the ball of the positioning ball 63 is embedded into the positioning shell under the extrusion of the side wall of the limiting convex column 64, and the spring is compressed; with the continuous downward movement of the upper mold core 4, the second elastic rubber layer 651 abuts against the truncated cone-shaped structure 621 of the bump 62 and is pressed on the truncated cone-shaped structure 621, and the first elastic rubber layer is pressed on the side wall of the caulking groove 65; at this time, the spherical groove 641 moves downward to the notch of the transverse groove along with the limiting convex column 64, and the ball is embedded into the spherical groove 641 under the resilience force of the spring to limit the limiting convex column 64.

And the middle part of the upper template 1 is provided with an injection molding main runner 7 which is communicated up and down and extends to the interior of the upper mold core 4. And one end of the injection molding main runner 7 is provided with an injection molding inlet positioned at the top of the upper template 1, and the other end of the injection molding main runner is provided with an injection molding outlet positioned inside the upper mold core 4. A sealing plug 71 is installed at the injection inlet, and the top of the sealing plug 71 extends out of the injection inlet. And a plurality of injection molding sub-runners 72 communicated with the closed cavity are arranged at the injection molding outlet. The sprue runner 72 that moulds plastics is the circumference equipartition and is in the exit of moulding plastics, just the radial dimension of sprue runner 72 that moulds plastics is less than the radial dimension of the sprue 7 of moulding plastics.

The upper template 1 and the upper die core 4 are fixed through bolts. The lower template 2 and the lower die core 5 are fixed through bolts.

The upper template 1 is provided with a guide hole for penetrating the positioning guide pillar 3, the lower template 2 is provided with a positioning groove matched with the guide hole, and a guide pillar positioning seat 31 extending out of the upper end face of the lower template is fixedly connected in the positioning groove. The guide post positioning seat 31 is internally provided with a mounting groove for fixing the positioning guide post 3, the positioning guide post 3 is vertically placed, one end of the positioning guide post is fixedly connected in the mounting groove, and the other end of the positioning guide post extends upwards and penetrates out of the guide hole.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. An anti-dislocation injection mold for an automobile injection molding part comprises an upper mold plate (1) and a lower mold plate (2) which are oppositely arranged, wherein a positioning guide pillar (3) fixedly connected with the lower mold plate (2) penetrates through the upper mold plate (1); an upper mold core (4) is installed at the lower end of the upper template (1), and a lower mold core (5) matched with the upper mold core (4) to form a closed cavity is installed at the upper end of the lower template (2); the method is characterized in that: the top of the lower mold core (5) is provided with a lower cavity groove (51) for forming a closed cavity, and two sides of the lower cavity groove (51) are symmetrically provided with lower pressing surfaces (52) which are pressed with the upper mold core (4); an upper cavity groove (41) matched with the lower cavity groove (51) is formed in the bottom of the upper mold core (4), and upper press-fit surfaces (42) matched with the lower press-fit surfaces (52) are symmetrically arranged on two sides of the upper cavity groove (41); a limiting component (6) for preventing the upper mold core (4) from deviating is arranged between the lower pressing surface (52) and the upper pressing surface (42); the limiting assembly (6) comprises a limiting groove (61) which is formed downwards along the lower pressing surface (52), the side wall of the limiting groove (61) is symmetrically provided with a transverse groove communicated with the limiting groove, and a positioning bead (63) extending into the limiting groove (61) is arranged in the transverse groove; and the upper pressing surface (42) is also provided with a limiting convex column (64) matched with the limiting groove (61), and the side wall of the limiting convex column (64) is provided with a spherical groove (641) matched with the positioning bead (63).

2. The dislocation-preventing injection mold according to claim 1, characterized in that: the bottom of the limiting groove (61) is also provided with a convex block (62) which protrudes upwards, and the bottom of the limiting convex column (64) is provided with an embedding groove (65) which is used for embedding the convex block (62); when the limiting convex column (64) is positioned in the limiting groove (61), the convex block (62) is embedded in the embedded groove (65).

3. The dislocation-preventing injection mold according to claim 2, characterized in that: the top of the bump (62) is provided with a round platform-shaped structure (621) which is convenient to be embedded into the embedding groove (65), and the side wall of the round platform-shaped structure is sleeved with a first elastic rubber layer; and a second elastic rubber layer (651) used for pressing the truncated cone-shaped structure (621) is arranged at the top of the caulking groove (65).

4. The dislocation-preventing injection mold according to any one of claims 1-3, wherein: the middle part of the upper die plate (1) is provided with an injection molding main runner (7) which is communicated with the upper part and the lower part and extends to the inside of the upper die core (4), and the injection molding main runner (7) in the upper die core (4) is provided with a plurality of injection molding sub-runners (72) communicated with the closed cavity.

5. The dislocation-preventing injection mold according to claim 4, characterized in that: the injection molding sub-runners (72) are circumferentially and uniformly distributed on the injection molding main runner (7), and the radial dimension of the injection molding sub-runners (72) is smaller than that of the injection molding main runner (7).

6. The dislocation-preventing injection mold according to claim 4, characterized in that: the upper template (1) and the upper mold core (4) are fixed through bolts; the lower template (2) and the lower die core (5) are fixed through bolts.