CN219028340U

CN219028340U - Mould with inclined hole core-pulling mechanism

Info

Publication number: CN219028340U
Application number: CN202223105915.8U
Authority: CN
Inventors: 王洪波; 孙文强; 王纪学; 郭峰; 任经; 张念钦; 贺守伟
Original assignee: Qingdao Hi Tech Moulds Co ltd
Current assignee: Qingdao Hi Tech Moulds Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-05-16
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses a die with an inclined hole core-pulling mechanism, which comprises a front die plate, a rear die plate, a straight top and a core-pulling mechanism positioned in the straight top, wherein the core-pulling mechanism comprises a forming insert pin and a fixed block, the forming insert pin is used for forming an inclined hole, an inclined T-shaped chute is arranged on the fixed block, and the forming insert pin is in sliding connection with the T-shaped chute; when the straight top carries the product to be ejected upwards, the forming insert needle moves along the T-shaped chute towards the direction of exiting the inclined hole. The utility model can separate the molding insert pin from the injection molding part during demolding, has simple operation steps and improves the demolding efficiency.

Description

Mould with inclined hole core-pulling mechanism

Technical Field

The utility model relates to the technical field of injection molds, in particular to a mold with an inclined hole core-pulling mechanism.

Background

The injection mold is a common mold for molding plastic parts, and various plastic parts can be molded through the injection mold so as to meet various demands of people. Because of the technological requirements of automobile rear bumpers, the plastic parts are required to be provided with structures such as holes or grooves, the existing demoulding sequence is usually that a front mould and a rear mould are separated firstly, then the hole or groove forming structure is separated from the plastic parts, and the injection molding parts are ejected out of the mould through an ejector mould assembly, so that the operation steps are complicated and the improvement is required.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a die with an inclined hole core pulling mechanism, which is reasonable in design, overcomes the defects in the prior art and has good effect.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the die with the inclined hole core pulling mechanism comprises a front die plate, a rear die plate, a straight top and a core pulling mechanism positioned in the straight top, wherein the core pulling mechanism comprises a forming insert pin and a fixed block, the forming insert pin is used for forming an inclined hole, an inclined T-shaped chute is arranged on the fixed block, and the forming insert pin is in sliding connection with the T-shaped chute; when the straight top carries the product to be ejected upwards, the forming insert needle moves along the T-shaped chute towards the direction of exiting the inclined hole.

Further, the fixing block is fixed on the rear template.

Further, a first through hole and a second through hole which are communicated are formed in the straight top, the forming insert pin is arranged in the first through hole and the second through hole, and the diameter of the second through hole is larger than that of the first through hole.

Further, a spring is arranged in the second through hole and sleeved on the forming insert pin, a protruding portion is arranged on the forming insert pin, and the spring is located on one side, close to the first through hole, of the protruding portion.

Further, a limiting block is arranged in the second through hole, and when the forming insert needle completely withdraws from the inclined hole, the protruding part just contacts with the limiting block.

The utility model has the beneficial technical effects that:

when the product is ejected upwards by the straight ejection, the molding insert moves towards the direction of exiting the inclined hole structure under the constraint action of the T-shaped chute of the fixed block, and the molding insert can be separated from the injection molding part during ejection, so that the inverted buckle is released, the operation steps are simple, and the demolding efficiency is improved.

Drawings

FIG. 1 is a cross-sectional view of a mold with a bevel hole core pulling mechanism according to the present utility model;

FIG. 2 is a schematic view of the configuration of the molding insert and the fixing hole of the present utility model;

FIG. 3 is a schematic view of the structure of the fixing block in the present utility model;

FIG. 4 is a schematic view of the structure of the molding insert of the present utility model;

FIG. 5 is a cross-sectional view of a straight top block according to the present utility model;

1-a rear template; 2-a straight top block; 3-a first through hole; 4-a second through hole; 5-forming the insert pin; 6-fixing blocks; 7-T-shaped sliding grooves; 8-T-shaped blocks; 9-a spring; 10-a protrusion; 11-limiting blocks;

Detailed Description

The following description of the embodiments of the utility model will be given with reference to the accompanying drawings and examples:

the die with the inclined hole core pulling mechanism comprises a front die plate and a rear die plate 1, as shown in fig. 1, and further comprises a straight top and a core pulling mechanism positioned in the straight top, wherein the straight top comprises a straight top block 2 and a straight top rod, through holes are formed in the straight top block 2, each through hole comprises a first through hole 3 and a second through hole 4 which are communicated, and the diameter of each second through hole 4 is larger than that of each second through hole 3;

the core pulling mechanism comprises a molding insert 5 and a fixed block 6, wherein the molding insert 5 is arranged in the first through hole 3 and the second through hole 4, as shown in fig. 2, one end of the molding insert 5 is used for molding an inclined hole, and the other end of the molding insert is in sliding connection with the fixed block 6. The fixed block 6 is fixed on the rear template 1; in this embodiment, as shown in fig. 3, an inclined T-shaped chute 7 is provided on the fixed block 6, and as shown in fig. 4, a T-shaped block 8,T shaped block 8 adapted to the T-shaped chute 7 is provided at the other end of the molding insert 5 and slidably connected to the T-shaped chute 7; when the product is ejected upwards by the straight ejection, the forming insert pin 5 is subjected to the force of the straight ejection upwards, but is limited by the T-shaped chute 7, and cannot vertically upwards, and can only move upwards obliquely along the T-shaped chute 7, and the upward oblique movement direction is opposite to the direction of the product which exits the inclined hole of the product.

As shown in fig. 5, a spring 9 is further arranged in the second through hole 4, the spring 9 is sleeved on the molding insert pin 5, a protruding part 10 is further arranged on the molding insert pin 5, the spring 9 is positioned at one side of the protruding part 10 close to the first through hole 3, and the spring 9 is positioned between the protruding part 10 and the first through hole 3; the spring is used for pushing the forming insert 5 to avoid the phenomenon that the die is bounced under the action of other external force to cause die collision before die closing after ejection.

A limiting block 11 is further arranged in the second through hole 4, the shaping insert 5 completely withdraws from the inclined hole, and the protruding part 10 just contacts with the limiting block 11.

The working process of the die is as follows: after the die is opened, the ejector plate drives the straight ejector to eject upwards, the fixed block 6 is fixed on the rear die plate and moves along the T-shaped chute 7 of the fixed block 6 towards the direction of exiting the inclined hole structure.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, and are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.

Claims

1. The die with the inclined hole core pulling mechanism comprises a front die plate and a rear die plate, and is characterized by further comprising a straight top and a core pulling mechanism positioned in the straight top, wherein the core pulling mechanism comprises a forming insert pin and a fixed block, the forming insert pin is used for forming an inclined hole, an inclined T-shaped chute is arranged on the fixed block, and the forming insert pin is in sliding connection with the T-shaped chute; when the straight top carries the product to be ejected upwards, the forming insert needle moves along the T-shaped chute towards the direction of exiting the inclined hole.

2. The mold with the inclined hole core pulling mechanism according to claim 1, wherein the fixing block is fixed on the rear mold plate.

3. The mold with the inclined hole core pulling mechanism according to claim 1, wherein a first through hole and a second through hole which are communicated are formed in the straight top, the molding insert is arranged in the first through hole and the second through hole, and the diameter of the second through hole is larger than that of the first through hole.

4. A die with a inclined hole core pulling mechanism as defined in claim 3, wherein a spring is arranged in the second through hole, the spring is sleeved on the forming insert pin, a protruding part is arranged on the forming insert pin, and the spring is positioned on one side of the protruding part close to the first through hole.

5. The mold with the inclined hole core pulling mechanism according to claim 4, wherein a limiting block is arranged in the second through hole, and when the forming insert is completely withdrawn from the inclined hole, the protruding part is just contacted with the limiting block.