CN112549455A

CN112549455A - Double-linkage structure of sliding block in movable die of injection mold

Info

Publication number: CN112549455A
Application number: CN201910908223.0A
Authority: CN
Inventors: 黄园林; 李建清
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2021-03-26

Abstract

The invention relates to a double linkage structure of a sliding block in a movable mould of an injection mould, which comprises a fixed mould, a movable mould frame and a movable mould core, the movable mold core is arranged on the movable mold frame and matched with the fixed mold to form a mold cavity, the movable mold frame is provided with a pull block in a sliding manner, the movable mold core is internally and movably provided with a shoveling machine and a slide block, the shoveling machine comprises a guide part and a connecting part, the guide part is provided with an inclined surface, the guide part is arranged on the connecting part, the connecting part is connected with the pulling block in a sliding way, and is used for driving the shovel machine to move towards the direction far away from the cavity, the guide part is connected with the slide block in a sliding way, and is used for driving the sliding block to slide, the sliding direction of the shovel machine is vertical to the sliding direction of the pulling block, the sliding block and the fixed die are matched to form a back-off cavity, the back-off cavity is communicated with the cavity, and the fixed die is further provided with an inclined guide pillar for driving the pulling block to move. The invention solves the problems of long core-pulling stroke and large ejection distance.

Description

Double-linkage structure of sliding block in movable die of injection mold

Technical Field

The invention belongs to the technical field of injection molds, and relates to a slide block double-linkage structure of an injection mold.

Background

In the design process of an injection mold, a plastic product has an inverted structure, and cannot be normally ejected, so that a sliding block or an inclined top structure is usually required to be added. However, as shown in fig. 1-2, the part 6 can only be ejected obliquely, the product structure cannot be changed, the ejector has long movement stroke, large angle and ejection distance, the straight body surface is not ejected at the assembly position, and the problems of difficult-to-take part of the product package ejector and pulling damage to the assembly surface of the product can be caused when the ejector is used. At this time, a safe and reliable mold structure which can save space and reduce stroke without changing the state of a product is needed, and the problem can be solved by a double linkage structure of a sliding block in a movable mold of an injection mold.

Disclosure of Invention

The invention provides a double-linkage structure of a sliding block in a movable mould of an injection mould, which aims to solve the problem of complicated mould stripping of a plastic product back-off structure and comprises a fixed mould, a movable mould frame and a movable mould core, wherein the movable mould core is arranged on the movable mould frame, the movable mould core is matched with the fixed mould to form a mould cavity, a pulling block is arranged on the movable mould frame in a sliding manner, a shoveling machine and a sliding block are movably arranged in the movable mould core, the shoveling machine comprises a guide part and a connecting part, the guide part is provided with an inclined surface, the guide part is arranged on the connecting part, the connecting part is connected with the pulling block in a sliding manner and used for driving the shoveling machine to move in a direction far away from the mould cavity, the guide part is connected with the sliding block in a sliding manner and used for driving the sliding block to slide, the sliding direction of the shoveling machine is vertical to the sliding direction of, the reverse-buckling type cavity is communicated with the cavity, and the fixed die is further provided with an inclined guide post for driving the pulling block to move.

Preferably, a limiting plate is fixed on the movable die frame, and the bottom of the sliding block is arranged on the limiting plate in a sliding mode.

Furthermore, the side wall of the sliding block is provided with an inclined plane matched with the guide part, a dovetail sliding groove is formed in the inclined plane, a dovetail sliding block is arranged on the guide part of the shovel machine, and the dovetail sliding block is matched with the dovetail sliding groove in a sliding connection mode. By adopting the dovetail groove structure, the stability of movement is ensured, and the sliding block can only slide along the shovel machine guide part.

Preferably, a limiting hole is formed in the middle of the limiting plate, and the connecting part penetrates through the limiting hole to be connected with the pulling block sliding block. The limiting block in the middle of the limiting plate ensures that the shovel only moves up and down, and ensures the stability of movement.

Furthermore, the pulling block is provided with an installation groove in an inclined mode, and the installation groove is matched with the inclined guide pillar for installation.

Preferably, in order to improve the stability of the movement, an installation surface is obliquely arranged at one end, away from the installation groove, of the pulling block, a T-shaped groove is formed in the installation surface, a T-shaped sliding block is obliquely arranged at the bottom of the connecting portion and is arranged in the T-shaped groove in a sliding mode. By adopting the T-shaped groove and T-shaped sliding block structure, the mounting surface is obliquely arranged on one side of the pulling block, so that the shovel machine cannot be separated from the mounting surface in the sliding process.

Has the advantages that: the invention solves the problems of large requirement on part space, long core-pulling stroke and large ejection distance in the prior art, and the technical scheme has compact structure, stable operation, safety and reliability.

Drawings

FIG. 1 is a schematic view of the structure of the present invention during mold assembly;

FIG. 2 is a schematic view of the demolded structure of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a schematic illustration of the shovel assembly of the present invention;

FIG. 5 is a schematic view of a slider structure according to the present invention;

FIG. 6 is a schematic view of the construction of the present shovel;

FIG. 7 is a schematic diagram of a limiting plate according to the present invention;

FIG. 8 is a schematic view of a pull block structure according to the present invention;

FIG. 9 is an assembled cross-sectional view of the pull block, slide block, shovel machine and angle guide post of the present invention;

1. fixing a mold; 2. an inclined guide post; 3. pulling the block; 4. a slider; 5. shoveling; 6. a part; 7. mounting grooves; 8. moving the mold frame; 9. a movable mould core; 10. a dovetail slide block; 11. a limiting plate; 12. a dovetail chute; 13. a T-shaped slider; 14. a T-shaped groove; 15. a limiting hole; 16. a mounting surface; 17. a guide portion; 18. a connecting portion; 19. inverted cavity

Detailed Description

As shown in the figure, the double-linkage structure of the sliding block in the movable die of the injection die comprises a fixed die 1, a movable die frame 8 and a movable die core 9, wherein the movable die core 9 is arranged on the movable die frame 8, the movable die core 9 is matched with the fixed die 1 to form a die cavity, a pull block 3 is arranged on the movable die frame 8 in a sliding manner, a shovel machine 5 and a sliding block 4 are movably arranged in the movable die core 9, the shovel machine 5 comprises a guide part 17 and a connecting part 18, the guide part 17 is provided with an inclined surface, the guide part 17 is arranged on the connecting part 18, the connecting part 18 is connected with the pull block 3 in a sliding manner and is used for driving the shovel machine 5 to move towards the direction far away from the die cavity, the guide part 17 is connected with the sliding block 4 in a sliding manner and is used for driving the sliding block 4 to slide, the sliding direction of the shovel machine 5 is perpendicular to the sliding direction of the pull block 3, and the, the back-off cavity 19 is communicated with the cavity, and the fixed die 1 is also provided with an inclined guide post 2 for driving the pull block 3 to move.

And a limiting plate 11 is fixed on the movable mould frame 8, and the bottom of the sliding block 4 is arranged on the limiting plate 11 in a sliding manner. The slider 4 lateral wall have with guide part 17 matched with inclined plane, be equipped with forked tail spout 12 on the inclined plane, be equipped with forked tail slider 10 on the guide part 17 of shovel machine 5, forked tail slider 10 with forked tail spout 12 cooperation sliding connection.

The middle of the limiting plate 11 is provided with a limiting hole 15, and the connecting part 18 penetrates through the limiting hole 15 to be connected with the sliding block of the pulling block 3. The pull block 3 is provided with an installation groove 7 in an inclined mode, and the installation groove 7 is installed in a matched mode with the inclined guide pillar 2. One end, far away from the mounting groove 7, of the pulling block 3 is obliquely provided with a mounting surface 16, a T-shaped groove 14 is formed in the mounting surface 16, a T-shaped sliding block 13 is obliquely arranged at the bottom of the connecting portion 18, and the T-shaped sliding block 13 is arranged in the T-shaped groove 14 in a sliding mode.

The specific working principle is as follows: when the part 6 needs to be demoulded, the inclined guide post 2 on the fixed die 1 is obliquely arranged in the mounting groove 7, so that the inclined guide post 2 moves upwards to the right and the pull block 3 is driven to move leftwards; the mounting surface 16 is obliquely arranged on the right side of the pulling block 3, in the process that the pulling block 3 moves leftwards, the connecting portion 18 of the shovel machine 5 penetrates through the limiting hole 151 to be connected with the sliding block of the pulling block 3, the shovel machine 5 can only move upwards and downwards, the T-shaped sliding block 13 at the bottom of the connecting portion 18 is arranged in the T-shaped groove 14 in a sliding mode, the T-shaped groove 14 on the mounting surface 16 moves leftwards under the driving of the pulling block 3, the T-shaped sliding block 13 slides in the T-shaped groove 14 and drives the shovel machine 5 to move towards the direction far away from the cavity, when the shovel machine 5 moves downwards, the guide portion 17 of the shovel machine 5 is provided with an obliquely arranged surface, the sliding blocks 4 on the two sides of the shovel machine 5 slide on the limiting plate 11 and approach the shovel machine 5, at the moment, the inverted buckle structure of the part 6.

Claims

1. The utility model provides an injection mold's slider double linkage structure in movable mould which characterized in that: including cover half (1), movable mould frame (8) and movable mould benevolence (9), movable mould benevolence (9) sets up on movable mould frame (8), movable mould benevolence (9) with cover half (1) cooperation forms the die cavity, it draws piece (3) to slide on movable mould frame (8), movable mould benevolence (9) internalization is equipped with shovel machine (5) and slider (4), shovel machine (5) include guide part (17) and connecting portion (18), guide part (17) have the face of slope, guide part (17) set up on connecting portion (18), connecting portion (18) with draw piece (3) sliding connection, and be used for driving shovel machine (5) is to the direction motion of keeping away from the die cavity, guide part (17) with slider (4) sliding connection, and be used for driving the slip of slider (4), shovel machine (5) sliding direction with draw piece (3) sliding direction perpendicular, the sliding block (4) and the fixed die (1) are matched to form a back-off cavity (19), the back-off cavity (19) is communicated with the cavity, and the fixed die (1) is further provided with an inclined guide post (2) for driving the pull block (3) to move.

2. The movable mold inner slide block double-linkage structure of the injection mold according to claim 1, characterized in that: a limiting plate (11) is fixed on the movable die frame (8), and the bottom of the sliding block (4) is arranged on the limiting plate (11) in a sliding mode.

3. The movable mold inner slide block double-linkage structure of the injection mold as claimed in claim 2, wherein: slider (4) lateral wall have with guide part (17) matched with inclined plane, be equipped with forked tail spout (12) on the inclined plane, be equipped with forked tail slider (10) on guide part (17) of shovel machine (5), forked tail slider (10) with forked tail spout (12) cooperation sliding connection.

4. The movable mold inner slide block double-linkage structure of the injection mold as claimed in claim 2, wherein: the middle of the limiting plate (11) is provided with a limiting hole (15), and the connecting part (18) penetrates through the limiting hole (15) to be connected with the sliding block of the pulling block (3).

5. The movable mold inner slide block double-linkage structure of the injection mold according to claim 1, characterized in that: the pull block (3) is obliquely provided with a mounting groove (7), and the mounting groove (7) is matched with the oblique guide pillar (2) for mounting.

6. The movable mold inner slide block double-linkage structure of the injection mold according to claim 5, characterized in that: draw piece (3) to keep away from the one end slope of mounting groove (7) is equipped with installation face (16), be equipped with T type groove (14) on installation face (16), connecting portion (18) bottom slope sets up and is equipped with T type slider (13), T type slider (13) slide to set up in T type groove (14).