CN219171550U

CN219171550U - Injection mold with back position demoulding structure

Info

Publication number: CN219171550U
Application number: CN202222874388.0U
Authority: CN
Inventors: 李凤山; 李棠明; 欧永星
Original assignee: Zhongshan Pacific Master Precision Injection Ltd
Current assignee: Zhongshan Pacific Master Precision Injection Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-06-13
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses an injection mold with a withdrawal demolding structure, which comprises an upper mold component and a lower mold component which is matched with the upper mold component to form a cavity, wherein the upper mold component is provided with the withdrawal demolding structure, the withdrawal demolding structure comprises a withdrawal component which at least partially stretches into the cavity and a driving component which is obliquely pushed and matched with the withdrawal component, a bulge part is arranged on the side wall of the end part of the withdrawal component stretching into the cavity, and the driving component drives the withdrawal component to shrink inwards when moving upwards so as to enable the bulge part to withdraw from a formed workpiece. This injection mold with withdrawal demoulding structure is through pushing away complex withdrawal subassembly and drive assembly to one side, and the time spent that the realization drive assembly moved up is withdrawn the subassembly and is inwards shrunk to make bellying remove and withdraw from the shaping work piece, reduce the drawing of patterns degree of difficulty, avoid the work piece damage.

Description

Injection mold with back position demoulding structure

Technical Field

The utility model relates to an injection mold, in particular to an injection mold with a back-off demolding structure.

Background

If the outer side of the injection molded workpiece is provided with concave holes/grooves, the injection mold for forming the workpiece is provided with corresponding convex points/flanges, and the template provided with the convex points/flanges in the existing injection mold is not movable, so that the demolding difficulty is high and the workpiece is easy to damage.

Disclosure of Invention

In order to solve the technical problems that a template with the convex points/flanges formed in the traditional injection mold is not movable, the demolding difficulty is high and a workpiece is easy to damage, the utility model aims to provide the injection mold with a recession demolding structure.

The utility model is realized by the following technical scheme:

the injection mold with the withdrawal demolding structure comprises an upper mold component and a lower mold component which is matched with the upper mold component to form a cavity, wherein the upper mold component is provided with the withdrawal demolding structure, the withdrawal demolding structure comprises a withdrawal component which at least partially stretches into the cavity and a driving component which is obliquely pushed and matched with the withdrawal component, a protruding part is arranged on the side wall of the end part of the withdrawal component, and the driving component drives the withdrawal component to shrink inwards when moving upwards so that the protruding part is withdrawn from a molded workpiece.

Further, the driving assembly comprises two oblique pushing posts arranged at intervals from left to right, and the withdrawal assembly comprises two withdrawal slide blocks which are positioned between the two oblique pushing posts and are respectively in oblique pushing fit with the two oblique pushing posts, and the two withdrawal slide blocks are driven to approach in opposite directions when the two oblique pushing posts move upwards.

Further, the driving assembly further comprises a guide post which moves synchronously with the two oblique pushing posts, the guide post is arranged between the two withdrawal slide blocks and is in oblique pushing fit with the two withdrawal slide blocks respectively, and the two withdrawal slide blocks slide along inclined planes which are propped against the guide posts and are close to each other when the two oblique pushing posts move upwards.

Further, the two-way sliding block comprises a left sliding block and a right sliding block, the two inclined pushing columns comprise a left pushing column and a right pushing column, the left sliding block is provided with a first inclined plane which is in inclined pushing fit with the left pushing column, and a second inclined plane which is in inclined pushing fit with the guiding column, the first inclined plane and the second inclined plane are parallel to each other, the right sliding block is provided with a third inclined plane which is in inclined pushing fit with the right pushing column, and a fourth inclined plane which is in inclined pushing fit with the guiding column, and the third inclined plane and the fourth inclined plane are parallel to each other.

Further, the two backset sliders are symmetrically arranged about the axis of the guide post.

Further, a first vertical surface is arranged below the second inclined surface of the left sliding block, a second vertical surface is arranged below the fourth inclined surface of the right sliding block, and the first vertical surface and the second vertical surface are propped against each other when the guide post moves upwards to be completely separated from the two return sliding blocks.

Further, the upper die assembly is provided with two assembling seats which are arranged from left to right at intervals and correspondingly accommodate the two withdrawal sliders, and each assembling seat is provided with a sliding groove which extends from left to right to enable the corresponding withdrawal slider to be embedded and moved left and right.

Further, a guiding part is convexly arranged at the bottom of the chute, and a limiting groove which extends leftwards and rightwards and is used for the guiding part to extend into and move is formed in the retraction slide block.

Further, each assembly seat is provided with a limiting hole for inserting the corresponding inclined pushing column at one side of the sliding groove away from the guide column.

Further, the unseating slider is detachably connected to the mount.

Compared with the prior art, the utility model has the following advantages:

this injection mold with withdrawal demoulding structure is through pushing away complex withdrawal subassembly and drive assembly to one side, and the time spent that the realization drive assembly moved up is withdrawn the subassembly and is inwards shrunk to make bellying remove and withdraw from the shaping work piece, reduce the drawing of patterns degree of difficulty, avoid the work piece damage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.

FIG. 1 is a perspective view of an injection mold with a unseating release structure as disclosed in the examples;

FIG. 2 is a cross-sectional view of an injection mold with a unseating release structure as disclosed in the examples;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a partial enlarged view at B in FIG. 3;

FIG. 5 is a perspective view of the unseating slider in the disclosed embodiments;

FIG. 6 is a perspective view of the mounting block of the disclosed embodiment;

FIG. 7 is a perspective view of a thrust post in the disclosed embodiments;

fig. 8 is a perspective view of a guide post in the disclosed embodiment.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: as shown in fig. 1-8, the injection mold with the withdrawal stripping structure comprises an upper mold component 1 and a lower mold component 3 which is matched with the upper mold component 1 to form a cavity 2, the upper mold component 1 is provided with a withdrawal stripping structure 4, the withdrawal stripping structure 4 comprises a withdrawal component 401 which at least partially stretches into the cavity 2 and a driving component 402 which is obliquely pushed and matched with the withdrawal component 401, a protruding part 403 is arranged on the side wall of the end part of the withdrawal component 401 which stretches into the cavity 2, and the driving component 402 drives the withdrawal component 401 to shrink inwards when moving upwards so as to enable the protruding part 403 to withdraw from a formed workpiece. Specifically, the driving assembly 402 includes two diagonal pushing posts 404 disposed at intervals from left to right, and the dislocating assembly 401 includes two dislocating sliders 405 disposed between the two diagonal pushing posts 404 and respectively in diagonal pushing fit with the two diagonal pushing posts 404, and when the two diagonal pushing posts 404 move up, the two dislocating sliders 405 are driven to move inwards to approach each other.

The injection molding and demolding steps of the injection mold with the back-off demolding structure are as follows: firstly, raw materials are injected into the cavity 2, and a workpiece is formed by cooling (corresponding concave holes or grooves are formed in the periphery of the workpiece due to the arrangement of the protruding portions 403), then, the two inclined pushing columns 404 move upwards, and when the two inclined pushing columns 404 move upwards, the left side of the inclined pushing blocks 405 move rightwards, the right side of the inclined pushing blocks 405 move leftwards, so that inward contraction of the inclined pushing components 401 is realized, further, the protruding portions 403 move out of the workpiece, the demoulding difficulty is reduced, and workpiece damage is avoided.

In summary, the injection mold with the recession demolding structure realizes that the recession assembly 401 contracts inwards when the driving assembly 402 moves upwards through the recession assembly 401 and the driving assembly 402 which are in oblique pushing fit, so that the protruding portion 403 moves to withdraw from a workpiece, the demolding difficulty is reduced, and the workpiece is prevented from being damaged.

In one embodiment, in order to improve the stability of the lateral movement of the dislocated slide blocks 405, the driving assembly 402 further includes a guide post 406 that moves synchronously with the two diagonal pushing posts 404, where the guide post 406 is disposed between the two dislocated slide blocks 405 and is in diagonal pushing engagement with the two dislocated slide blocks 405, and the two dislocated slide blocks 405 slide along an inclined plane that abuts against the guide post 406 and approach each other when the two diagonal pushing posts 404 move up.

In one embodiment, to improve the stability of the left-right movement of the dislocated slide 405, the two dislocated slide 405 includes a left slide 4051 and a right slide 4052, the two inclined push posts 404 include a left push post 4041 and a right push post 4042, the left slide 4051 has a first inclined surface 407 that is in inclined push fit with the left push post 4041, and has a second inclined surface 408 that is in inclined push fit with the guide post 406, the first inclined surface 407 and the second inclined surface 408 are parallel to each other, the right slide 4052 has a third inclined surface 409 that is in inclined push fit with the right push post 4042, and has a fourth inclined surface 410 that is in inclined push fit with the guide post 406, and the third inclined surface 409 and the fourth inclined surface 410 are parallel to each other.

In one embodiment, in order to improve the stability of the lateral movement of the backset slider 405, the two backset sliders 405 are symmetrically disposed about the axis of the guide post 406.

In one embodiment, in order to avoid hard contact between the left and right sliders, the left slider 4051 is provided with a first vertical surface 411 below the second inclined surface 408, the right slider 4052 is provided with a second vertical surface 412 below the fourth inclined surface 410, and the first vertical surface 411 and the second vertical surface 412 are abutted when the guide post 406 moves up to be completely separated from the two dislocated sliders 405.

In one embodiment, in order to improve the stability of the horizontal movement and the assembly of the recession slide blocks 405, the upper die assembly 1 has two assembly seats 5 for accommodating the two recession slide blocks 405 correspondingly, which are arranged from left to right at intervals, and each assembly seat 5 is provided with a sliding groove 51 extending from left to right for the corresponding recession slide block 405Q to be embedded and slid.

In one embodiment, in order to avoid the transition movement, a guiding portion 52 is protruding from the bottom of the chute 51, and a limiting groove 413 extending laterally for the guiding portion 52 to extend into and move is provided on the retraction slider 405.

In one embodiment, in order to improve the stability of assembly, each assembly seat 5 is provided with a limiting hole 53 for inserting the corresponding oblique pushing post 404 at a side of the sliding groove 51 away from the guiding post 406.

In one embodiment, the retraction slider 405 is detachably connected to the mounting base 5 for easy maintenance and replacement.

It should be understood that the terms "first," "second," and the like are used herein to describe various information, but such information should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the utility model. Furthermore, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience in describing the present utility model and simplifying the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The foregoing description of one or more embodiments provided in connection with the specific disclosure is not intended to limit the practice of the utility model to such description. Any approximation, or substitution of the technical deduction or substitution made for the technical deduction of the present utility model based on the inventive method, structure, etc. shall be considered as protection of the present utility model.

Claims

1. The injection mold with the withdrawal demolding structure comprises an upper mold component and a lower mold component which is matched with the upper mold component to form a cavity, and is characterized in that the upper mold component is provided with the withdrawal demolding structure, the withdrawal demolding structure comprises a withdrawal component which at least partially stretches into the cavity and a driving component which is obliquely pushed and matched with the withdrawal component, a protruding part is arranged on the side wall of the end part of the withdrawal component, and the driving component drives the withdrawal component to shrink inwards when moving upwards so that the protruding part withdraws from a molded workpiece.

2. The injection mold with the recession demolding structure according to claim 1, wherein the driving assembly comprises two oblique pushing posts arranged at intervals from left to right, and the recession assembly comprises two recession sliding blocks which are positioned between the two oblique pushing posts and are respectively in oblique pushing fit with the two oblique pushing posts, and the two recession sliding blocks are driven to be close to each other when the two oblique pushing posts move upwards.

3. The injection mold with a recession and demolding structure according to claim 2, wherein the driving assembly further comprises a guide post which moves synchronously with the two oblique pushing posts, the guide post is arranged between the two recession sliding blocks and is respectively in oblique pushing fit with the two recession sliding blocks, and the two recession sliding blocks slide along oblique planes which are abutted against the guide posts and are close to each other when the two oblique pushing posts move upwards.

4. The injection mold with a recession demolding structure as claimed in claim 3, wherein the two recession sliders include a left slider and a right slider, the two diagonal pushing posts include a left pushing post and a right pushing post, the left slider has a first inclined surface that is in diagonal pushing fit with the left pushing post, and has a second inclined surface that is in diagonal pushing fit with the guide post, the first inclined surface and the second inclined surface being parallel to each other;

the right sliding block is provided with a third inclined surface which is in inclined pushing fit with the right pushing column and a fourth inclined surface which is in inclined pushing fit with the guide column, and the third inclined surface and the fourth inclined surface are mutually parallel.

5. An injection mold having a recession demolding structure as claimed in claim 3, wherein two of the recession sliders are symmetrically disposed about an axis of the guide post.

6. The injection mold with the unseating and demolding structure according to claim 4, wherein a first vertical surface is arranged below the second inclined surface of the left sliding block, a second vertical surface is arranged below the fourth inclined surface of the right sliding block, and the first vertical surface and the second vertical surface are propped against each other when the guide post moves upwards to be completely separated from the two unseating sliding blocks.

7. The injection mold with the recession demolding structure according to claim 3, wherein the upper mold assembly is provided with two assembling seats which are arranged from left to right at intervals and correspondingly accommodate the two recession sliding blocks, and each assembling seat is provided with a sliding groove which extends from left to right to allow the corresponding recession sliding block to be embedded and moved from left to right.

8. The injection mold with the recession demolding structure according to claim 7, wherein a guiding part is convexly arranged at the bottom of the chute, and a limiting groove which extends leftwards and rightwards for the guiding part to extend into and move is formed in the recession slide block.

9. The injection mold with the recession and demolding structure according to claim 7, wherein each assembly seat is provided with a limiting hole for inserting the corresponding oblique pushing column at one side of the sliding groove away from the guide column.

10. The injection mold with a recession demolding structure as claimed in claim 7, wherein the recession slider is detachably attached to the mounting base.