CN111409236A

CN111409236A - Double-slider combined core-pulling mechanism of injection mold

Info

Publication number: CN111409236A
Application number: CN202010423120.8A
Authority: CN
Inventors: 汪大艮; 曾祥波; 任天遗
Original assignee: Tsun Ngai Precise Tooling Suzhou Co ltd
Current assignee: Tsun Ngai Precise Tooling Suzhou Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-07-14

Abstract

The invention relates to a double-slider combined core-pulling mechanism of an injection mold, which comprises a large oil cylinder, wherein the large oil cylinder is fixed on the side surface of a rear template through a large oil cylinder seat, an oil cylinder telescopic rod is connected with a connector and then inserted into a groove of the large slider seat, a wear-resisting block and a small oil cylinder are fixed in a large slider B, a telescopic rod of the small oil cylinder is connected with one end of a connecting rod, the small slider is installed in the large slider A and the large slider B through a rotating shaft, the other end of the connecting rod is inserted into a sliding groove of the small slider, the large slider seat is fixed with the large slider B, a locking block is inserted into a corresponding groove of the large slider B, the tail part of an inclined guide post is fixed on the front template, and the head part of the inclined guide post penetrates through an inclined guide post hole on. The structure of the invention shortens the injection molding cycle, improves the operation safety, ensures the quality of the plastic product, greatly prolongs the service life of the mold, and meets the automation requirement of injection molding production of customers.

Description

Double-slider combined core-pulling mechanism of injection mold

Technical Field

The invention belongs to the technical field of injection molds, and particularly relates to a double-slider combined core-pulling mechanism of an injection mold.

Background

The slide block core-pulling mechanism, also called a slide core-pulling mechanism, is widely applied to an injection mold, and mainly solves the problems of forming and demolding of structural characteristics perpendicular to the mold opening direction on a plastic part product. However, for the inverted structure with the hook-shaped characteristic, a single sliding block core pulling mechanism cannot be sufficient, especially under the condition that the turning radius of the hook shape is small, the arc-shaped rotary core pulling mechanism is difficult to design due to insufficient space, the traditional solution is to arrange a movable embedded insert, place the embedded insert in a set position of a mold in advance before mold closing, take out the embedded insert along with a plastic part after mold releasing, and then manually unscrew the embedded insert from the plastic part product. The mold structure has the defects of long injection molding period, poor operation safety, unstable quality of the molded part, short service life of the mold and the like, and is difficult to meet the requirements of customers.

Disclosure of Invention

In order to solve the problems, the invention provides a double-slider combined core pulling mechanism of an injection mold, which has the advantages of flexible, stable and reliable action, shortened injection molding period and long service life.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the invention relates to a double-slider combined core-pulling mechanism of an injection mold, which comprises a large oil cylinder, a large oil cylinder seat, a large slider seat, a rear template, a small oil cylinder, a connecting rod, a small slider, a wear-resistant block, a large slider A, an inclined guide post, a large slider B, a front template, a locking block and a connector, wherein the large oil cylinder is fixed on the side surface of the rear template through the large oil cylinder seat, an oil cylinder telescopic rod of the large oil cylinder is connected with the connector and then inserted into a groove of the large slider seat, the wear-resistant block and the small oil cylinder are fixed into the large slider B, the cambered surface of the wear-resistant block is attached to the cylindrical surface of the small slider, the telescopic rod of the small oil cylinder is connected with one end of the connecting rod, the small slider is installed into the large slider A and the large slider B through a rotating shaft, the other end of the connecting rod is inserted into a sliding groove of the small slider to control the small slider, the large sliding block seat is fixed with the large sliding block B, the locking block is inserted into a corresponding groove of the large sliding block B, the tail part of the inclined guide post is fixed on the front template, and the head part of the inclined guide post penetrates through the large sliding block A and the large sliding block B to be matched with an inclined guide post hole on the locking block to lock or release the small sliding block.

The invention is further improved in that: when the mold is opened, the inclined guide post on the front mold plate drives the locking block to move leftwards, the small oil cylinder is started after the small sliding block is separated, the small sliding block is pushed to rotate 36 degrees anticlockwise around the rotating shaft, the previous core pulling of the hook-shaped inverted buckle bottom structure is completed, the core pulling state of the small sliding block is kept, then the large oil cylinder is started, the large sliding block A and the large sliding block B are pulled, the small sliding block is driven to integrally move leftwards for core pulling until the small sliding block is completely separated from the hook-shaped structural characteristic, and the side demolding is completed; before die assembly, the large oil cylinder pushes the large slide block A and the large slide block B in advance and drives the small slide block to integrally move rightwards until the small slide block is in place, then the small oil cylinder is started, the small slide block is pulled to rotate clockwise for 36 degrees around a rotating shaft for resetting, die assembly is started, and the inclined guide post on the front template drives the locking block to move rightwards to lock the small slide block until die assembly is completed.

The invention has the beneficial effects that: the core pulling of the structural feature of the bottom of the hook is completed by using a double-slider combined core pulling mechanism and utilizing the prior rotation of the small slider in the large slider, and then the complete demoulding of the structural feature of the lateral hook is completed by driving the small slider through the large slider; the invention has the advantages of ingenious conception, reasonable structure, flexible, stable and reliable action, effectively realizes the local arc core pulling under the condition of small space, has strong pertinence to the demoulding of the plastic parts with the structural characteristics similar to a 'hook', shortens the injection molding period, improves the operation safety, ensures the quality of the plastic parts, greatly prolongs the service life of the mould, and meets the automatic requirement of injection molding production of customers.

Drawings

FIG. 1 is a schematic view showing a clamped state according to the present invention.

FIG. 2 is a schematic diagram of the mold-open state of the present invention.

Wherein: 1-large oil cylinder; 2-large cylinder base; 3-large slide block seat; 4-back template; 5-a small oil cylinder; 6-connecting rod;

7-small sliding block; 8-wear resistant blocks; 9-big slide block A; 10-an inclined guide post; 11-big slide block B; 12-front template; 13-a locking block; 14-connecting head.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the embodiments of the invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

As shown in the figure 1-2, the invention relates to a double-slider combined core-pulling mechanism of an injection mold, which comprises a large oil cylinder 1, a large oil cylinder seat 2, a large slider seat 3, a rear template 4, a small oil cylinder 5, a connecting rod 6, a small slider 7, a wear-resistant block 8, a large slider A9, an inclined guide pillar 10, a large slider B11, a front template 12, a locking block 13 and a connecting head 14, wherein the large oil cylinder 1 is fixed on the side surface of the rear template 4 through the large oil cylinder seat 2, an oil cylinder telescopic rod of the large oil cylinder 1 is connected with the connecting head 14 and then inserted into a groove of the large slider seat 3, the wear-resistant block 8 and the small oil cylinder 5 are fixed into the large slider B11, an arc surface of the wear-resistant block 8 is attached to a cylindrical surface of the small slider 7, a telescopic rod of the small oil cylinder 5 is connected with one end of the connecting rod 6, and the small slider 7 is installed, In the big sliding block B11, the other end of the connecting rod 6 is inserted into the sliding groove of the small sliding block 7 to control the small sliding block 7 to rotate 36 degrees anticlockwise or clockwise, the big sliding block A9 and the big sliding block B11 are fixed by screws to form a whole, the whole is mounted on the rear template 4 and can move left and right, the big sliding block seat 3 is fixed with the big sliding block B11, the locking block 13 is inserted into the corresponding groove of the big sliding block B11, the tail part of the inclined guide post 10 is fixed on the front template 12, and the head part of the inclined guide post 10 passes through the big sliding block A9 and the big sliding block B11 to be matched with the inclined guide post hole on the locking block 13 to lock or unlock the small sliding.

The core pulling of the bottom structural feature of the hook is completed in advance by utilizing the rotation of the small slide block in the large slide block, the small slide block is driven by the large slide block to complete the complete demoulding of the lateral structural feature, the outer diameter of the cylindrical surface of the small slide block is 84mm, when the mould is opened, the inclined guide post 10 on the front mould plate 12 drives the locking block 13 to move leftwards, after the small slide block 7 is removed, the small oil cylinder 5 is started to push the small slide block 7 to rotate anticlockwise by 36 degrees around a rotating shaft, the core pulling of the bottom structure of the hook-shaped back-off is completed, the core pulling state of the small slide block 7 is kept, then the large oil cylinder 1 is started, the large slide block A9 and the large slide block B11 are pulled, the small slide block 7 is driven to integrally move leftwards to pull; before mold closing, the large oil cylinder 1 firstly pushes the large slide block A9 and the large slide block B11 and drives the small slide block 7 to integrally move rightwards until the small slide block is in place, then the small oil cylinder 7 is started, the small slide block 7 is pulled to rotate clockwise for 36 degrees to reset around a rotating shaft, mold closing is started, and the inclined guide post 10 of the front template 12 drives the locking block 13 to move rightwards to lock the small slide block 7 until mold closing is completed.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides an injection mold's two slider combination formula mechanism of loosing core, includes big hydro-cylinder (1), big hydro-cylinder seat (2), big slider seat (3), back template (4), little hydro-cylinder (5), connecting rod (6), little slider (7), wear-resisting piece (8), big slider A (9), guide pillar (10) to one side, big slider B (11), front bezel (12), latch segment (13) and connector (14), its characterized in that: the large oil cylinder (1) is fixed to the side face of the rear template (4) through the large oil cylinder seat (2), an oil cylinder telescopic rod of the large oil cylinder (1) is connected with the connecting head (14) and then inserted into a groove of the large sliding block seat (3), the wear-resistant block (8) and the small oil cylinder (5) are fixed into the large sliding block B (11), the arc face of the wear-resistant block (8) is attached to the cylindrical face of the small sliding block (7), the telescopic rod of the small oil cylinder (5) is connected with one end of a connecting rod (6), the small sliding block (7) is installed into the large sliding block A (9) and the large sliding block B (11) through a rotating shaft, the other end of the connecting rod (6) is inserted into a sliding groove of the small sliding block (7) to control the small sliding block (7) to rotate anticlockwise or clockwise, the large sliding block A (9) and the large sliding block B (11) are fixed into a whole through screws, the locking mechanism is mounted on a rear template (4) and can move left and right, a large sliding block seat (3) is fixed with a large sliding block B (11), a locking block (13) is inserted into a corresponding groove of the large sliding block B (11), the tail part of an inclined guide post (10) is fixed on a front template (12), and the head part of the inclined guide post (10) penetrates through the large sliding block A (9), the large sliding block B (11) and an inclined guide post hole on the locking block (13) to be matched so as to lock or release a small sliding block (7).

2. The double-slider combined core-pulling mechanism of the injection mold according to claim 1, characterized in that: when the mold is opened, an inclined guide post (10) on a front mold plate (12) drives a locking block (13) to move leftwards, a small oil cylinder (5) is started after a small sliding block (7) is separated, the small sliding block (7) is pushed to rotate anticlockwise around a rotating shaft for 36 degrees, the previous core pulling of a hook-shaped inverted buckle bottom structure is completed, the core pulling state of the small sliding block (7) is kept, then a large oil cylinder (1) is started, a large sliding block A (9) and a large sliding block B (11) are pulled, the small sliding block (7) is driven to integrally move leftwards for core pulling until the small sliding block (7) completely separates from the hook-shaped structural characteristic, and the side demolding is completed; before die assembly, the large oil cylinder (1) pushes the large sliding block A (9) and the large sliding block B (11) in advance and drives the small sliding block (7) to integrally move rightwards until the large sliding block A and the large sliding block B are in place, then the small oil cylinder (7) is started, the small sliding block (7) is pulled to clockwise rotate around the rotating shaft for 36 degrees to reset, die assembly is started, and the inclined guide post (10) on the front template (12) drives the locking block (13) to move rightwards to lock the small sliding block (7) until die assembly is completed.