CN107984704B

CN107984704B - Core-pulling sliding guide mechanism of injection mold

Info

Publication number: CN107984704B
Application number: CN201711397510.7A
Authority: CN
Inventors: 桂和春; 王威; 王金标
Original assignee: Zhejiang Taizhou Meiduo Mould Co Ltd
Current assignee: Zhejiang Taizhou Meiduo Mould Co Ltd
Priority date: 2017-12-20
Filing date: 2017-12-20
Publication date: 2020-02-28
Anticipated expiration: 2037-12-20
Also published as: CN107984704A

Abstract

The invention relates to a core-pulling sliding guide mechanism of an injection mold, which comprises sliding blocks, two core-pulling sliding blocks and a movable mold insert fixed on a movable mold, wherein the top surface of the movable mold insert is isosceles triangle, the bottom surface of the movable mold insert is isosceles trapezoid, insert guide sliding grooves are formed in the inclined surfaces of two sides of the movable mold insert, the core-pulling sliding blocks are similar to triangular prisms, an insert guide sliding block is fixed on one side surface of each core-pulling sliding block, an insert guide sliding plate of which the structure is matched with the insert guide sliding grooves is formed in the insert guide sliding block, a sliding block guide sliding groove is formed in the other side surface of each core-pulling sliding block, two sliding block inclined surfaces are formed on the end surface of each sliding block close to the movable mold insert, the sliding block inclined surfaces are matched with the side surfaces of the sliding block guide. The core pulling mechanism can realize core pulling in different directions, particularly core pulling in the case of mutual cross interference of the core pulling directions.

Description

Core-pulling sliding guide mechanism of injection mold

The invention is a divisional application of invention patent application with the application number of 2017113860866, the application date of 2017, 12 and 20, and the invention and creation name of 'single-slide multi-direction core-pulling mechanism of injection mold'.

Technical Field

The invention relates to the technical field of injection molds, in particular to a core-pulling and sliding-guiding mechanism of an injection mold.

Background

The core-pulling mechanism is one of the most common mechanisms in the injection mold, and is generally designed at the back-off position of the product. The core pulling mechanism commonly used at present is that the oblique guide pillar drives the slider of loosing core and looses core, and when moving the cover half and opening, the slider of loosing core motion is driven to the oblique guide pillar for the core breaks away from the product and is convenient for the product drawing of patterns. However, the conventional core-pulling slider driven by the inclined guide post can only move along one direction, and when the core is pulled longitudinally in a small space range and in multiple directions, especially when the core-pulling directions interfere with each other, the conventional core-pulling scheme for the slider is not applicable any more.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a multidirectional sliding guide mechanism for an injection mold core-pulling mechanism.

The technical scheme adopted by the invention for realizing the aim of the invention is as follows:

the core-pulling slide-guiding mechanism of the injection mould comprises slide blocks, two core-pulling slide blocks and a movable mould insert fixed on a movable mould, the top surface of the movable die insert is in an isosceles triangle shape, the bottom surface of the movable die insert is in an isosceles trapezoid shape, insert guide sliding grooves are formed in the inclined surfaces of the two sides of the movable die insert, the core-pulling slide block is similar to a triangular prism, an insert block guide slide block is fixed on one side surface of the core-pulling slide block, the insert guide slide block is provided with an insert guide slide plate which is matched with the insert guide slide groove in structure, the other side surface of the core-pulling slide block is provided with a slide block guide slide groove, the end surface of the slide block close to the movable die insert is provided with two slide block inclined surfaces which are matched with the side surface of the core-pulling slide block provided with a slide block guide chute, and the two slide block inclined planes are fixedly provided with slide block guide slide blocks, and the slide block guide slide blocks are provided with slide block guide slide plates matched with the slide block guide slide grooves in structure.

In the above technical scheme, the insert guide chute is fixed with an insert trim strip for preventing the insert guide slide plate from falling off, and the outer end part of the groove wall of the slide block guide chute is provided with a step for preventing the slide block guide slide plate from falling off.

Compared with the prior art, the core pulling mechanism can realize core pulling in different directions, particularly core pulling when the core pulling directions are mutually crossed and interfered, and meets the requirement of multi-angle core pulling that a plurality of core pulling mechanisms cannot be arranged when the core pulling directions are crossed and interfered by space limitation.

Drawings

FIG. 1 is a schematic perspective exploded view of the present invention;

FIG. 2 is a schematic view of a slider and a core-pulling slider in FIG. 1;

FIG. 3 is a schematic view of the slider structure of FIG. 2;

FIG. 4 is a schematic view of the mating structure of the movable die insert and the core back slide block in FIG. 1.

Detailed Description

The invention is further described with reference to the following drawings and detailed description. As shown in fig. 1-4, the core-pulling and sliding-guiding mechanism of the injection mold comprises a movable mold 1, a sliding block 2 and a fixed mold, wherein an inclined guide pillar through hole 21 is formed in the sliding block 2, an inclined guide pillar 8 is fixed on the fixed mold, the inclined guide pillar 8 penetrates through the inclined guide pillar through hole 21, two core-pulling sliding blocks 3 are arranged on the movable mold 1 in a sliding manner, and the sliding block 2 and the core-pulling sliding blocks 3 are provided with multi-direction sliding-guiding mechanisms.

Wherein the multi-direction guide sliding mechanism comprises a movable die insert 4 fixed on the movable die 1, the top surface of the movable die insert 4 is in an isosceles triangle shape, the bottom surface of the movable die insert 4 is in an isosceles trapezoid shape, insert guide sliding grooves 41 are respectively arranged on the inclined surfaces of two sides of the movable die insert 4, the core-pulling sliding block 3 is in a similar triangular prism shape, an insert guide sliding block 5 is fixed on one side surface of the core-pulling sliding block 3, an insert guide sliding plate 51 which is structurally matched with the insert guide sliding grooves 41 is arranged on the insert guide sliding, the other side surface of the core-pulling slide block 3 is provided with a slide block guide chute 31, the end surface of the slide block 2 close to the movable die insert 4 is provided with two slide block inclined surfaces 22, the slide block inclined plane 22 is matched with the side surface of the core-pulling slide block 3 provided with a slide block guide chute 31, the two slide block inclined planes 22 are fixedly provided with slide block guide slide blocks 6, and the slide block guide slide blocks 6 are provided with slide block guide slide plates 61 which are matched with the slide block guide slide grooves 31 in structure.

In the mold opening process, the slide blocks 2 slide towards the outer side of the mold under the action of the inclined guide posts 8, and simultaneously drive the two core-pulling slide blocks 3 to slide along the inclined planes (core-pulling direction) on the two sides of the movable mold insert 4, and in the process, the slide block guide sliding grooves 31 of the core-pulling slide blocks 3 also slide along the slide block guide slide blocks 6 fixed on the slide blocks 2, so that core pulling in different directions is realized.

In the above technical scheme, wear-resisting plates 7 are arranged between the inclined planes on the two sides of the movable die insert 4 and the core-pulling slide block 3. The inclined planes on the two sides of the movable die insert 4 and the gap between the two core-pulling slide blocks 3 are filled through the wear-resisting plates 7, and the gaps between the two parts can be filled through replacing the wear-resisting plates 7 with different thicknesses, so that the design precision requirement of the die is reduced, the rejection rate of the die is also reduced, and the design and manufacturing cost is greatly reduced.

In the above technical solution, the insert guiding chute 41 is fixed with an insert pressing strip 42 for preventing the insert guiding slide plate 51 from falling off, and the outer end of the chute wall of the slide guiding chute 31 is provided with a step 32 for preventing the slide guiding slide plate 61 from falling off.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concept of the present invention should fall within the scope of the present invention.

Claims

1. The core-pulling guide sliding mechanism of the injection mold is characterized by comprising a sliding block (2), two core-pulling sliding blocks (3) and a movable mold insert (4) fixed on a movable mold (1), wherein the top surface of the movable mold insert (4) is in an isosceles triangle shape, the bottom surface of the movable mold insert (4) is in an isosceles trapezoid shape, insert guide sliding grooves (41) are formed in the inclined surfaces of two sides of the movable mold insert (4), the core-pulling sliding blocks (3) are similar to triangular prism bodies, an insert guide sliding block (5) is fixed on one side surface of each core-pulling sliding block (3), an insert guide sliding plate (51) matched with the insert guide sliding grooves (41) in structure is formed in the insert guide sliding block (5), a sliding block guide sliding groove (31) is formed in the other side surface of the core-pulling sliding block (3), two sliding block inclined surfaces (22) are formed in the end surface of the sliding block (2) close to the movable mold insert (4), and the, all fixed mounting has slider guide slide (6) on two slider inclined planes (22), system on slider guide slide (6) structure with slider guide chute (31) complex slider guide slide (61), the both sides inclined plane of movable mould insert (4) with be provided with antifriction plate (7) between slider of loosing core (3).

2. The core-pulling slide-guiding mechanism of an injection mold according to claim 1, characterized in that the insert guide chute (41) is fixed with an insert trim strip (42) for preventing the insert guide slide (51) from falling off, and the outer end of the groove wall of the slide guide chute (31) is provided with a step (32) for preventing the slide guide slide (61) from falling off.