CN209903847U

CN209903847U - Demoulding mechanism with deep undercut for sliding block with middle-out sliding block

Info

Publication number: CN209903847U
Application number: CN201920738651.9U
Authority: CN
Inventors: 刘奇才; 黄春满
Original assignee: Changzhou Huachi Mould Technology Co Ltd
Current assignee: Changzhou Huachi Mould Technology Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-01-07
Anticipated expiration: 2029-05-22

Abstract

The utility model relates to an injection molding machine technical field especially relates to a go out dark back-off demoulding mechanism of slider in slider, it includes the front mould, back mould, slider one and slider two, gu be equipped with oblique guide pillar on the front mould, slider one has been seted up to one side guide pillar through-hole, slider two has been seted up to one side guide pillar through-hole on the slider two, the oblique guide pillar blind hole of back mould has been seted up on the back mould, the oblique guide pillar through-hole of slider one is passed respectively to the guide pillar, two oblique guide pillar through-holes of slider, the lower tip is located back mould oblique guide pillar blind hole, the aperture and the oblique guide pillar of two oblique guide pillar through-holes of slider are to the cooperation, slider one oblique guide pillar through-hole is greater than oblique guide pillar diameter, seted up spacing pinhole in the slider one, be provided with the spacer pin in the spacer pin, spacer pin abdication hole has been seted. The device provided by the utility model prevent that the product from gluing and causing the back-off to draw badly on the slider.

Description

Demoulding mechanism with deep undercut for sliding block with middle-out sliding block

Technical Field

The utility model relates to an injection molding machine technical field especially relates to a go out dark back-off demoulding mechanism of slider in slider.

Background

When an injection molding machine performs injection molding, a plurality of products are provided with shallow undercuts and deeper undercuts, if the products are demolded once, the products can be damaged by pulling, the ideal effect cannot be achieved, and the products need to be demolded twice in a sliding block. The deeper back-off button is taken off firstly, and the shallower back-off module is taken off, so that the product is prevented from being stained on the sliding block and being damaged by pulling easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a deep back-off demoulding mechanism of slider is provided to prevent that the product from gluing and causing the back-off to draw bad slider on the slider.

The utility model discloses a realize through following technical scheme:

a slider deep-undercut demolding mechanism for a slider comprises a front mold, a rear mold, a slider I and a slider II, wherein the front mold and the rear mold are matched with each other to form a product pouring cavity, the slider I is positioned between the front mold and the rear mold, the slider II is positioned inside the slider I, the end part of the slider I is matched with the deep undercut and the shallow undercut of a product, the end part of the slider II is matched with the deep undercut, an inclined guide post is fixedly arranged on the front mold, a slider I inclined guide post through hole is formed on the slider I, a slider II inclined guide post through hole is formed on the slider II, a rear mold inclined guide post blind hole is formed on the rear mold, the inclined guide posts respectively penetrate through a slider I inclined guide post through hole and a slider II inclined guide post through hole, the lower end part of the slider II inclined guide post through hole is positioned in the rear mold inclined guide post blind hole, the diameter of the slider I inclined guide post through hole is matched with the inclined guide post in the inclined, a limiting pin is arranged in the limiting pin hole, a limiting pin abdicating hole is formed in the position, corresponding to the limiting pin, of the second sliding block, and the aperture of the limiting pin abdicating hole is larger than the diameter of the limiting pin.

Furthermore, a wedging block is fixedly installed on the front die, the wedging block is matched with the rear end parts of the first sliding block and the second sliding block, and the lower parts of matching surfaces of the wedging block, the first sliding block and the second sliding block are inclined planes.

Beneficial effects of the utility model

Go out slider deep back-off demoulding mechanism in slider, when the mould was opened, the back mould moves down, under the guide pillar effect to one side, because the aperture of the guide pillar through-hole to one side of slider two and the cooperation of guide pillar to one side, the guide pillar through-hole to one side of slider is greater than the guide pillar diameter to one side, and makes the guide pillar through-hole to one side of slider leave the clearance distance on the guide pillar right side to one side, and slider two moves backward earlier, and slider one does not have backward movement, when slider two moves back to spacer pin department, and the guide pillar to one side just contacts with slider one, and slider one and slider two retreat simultaneously, are retreated until withdrawing the. The demoulding process has the advantages that the demoulding process is carried out twice in one sliding block, the deeper back-off is firstly released, the demoulding process is carried out after the product is shallow, the phenomenon that the back-off is damaged due to the fact that the product is stained on the sliding block is avoided, the structure is simple, the operation is convenient, and the action is reliable.

Drawings

FIG. 1 is a schematic sectional view of the mold clamping state of the present invention;

FIG. 2 is a schematic view of the sectional structure of the mold opening state of the present invention;

in the drawing, the die comprises a front die 1, a product 2, a rear die 3, a rear die 4, a rear die inclined guide post blind hole, a slider II inclined guide post through hole 5, a limiting pin abdicating hole 6, a limiting pin hole 7, a limiting pin hole 8, a slider II, a wedge block 10, a slider I inclined guide post through hole 12 and an inclined guide post 13.

Detailed Description

A slider deep-undercut demoulding mechanism in a slider comprises a front mould 1, a rear mould 3, a slider I11 and a slider II 9, wherein the front mould and the rear mould are mutually matched to form a pouring cavity of a product 2, the slider I is positioned between the front mould and the rear mould, the slider II is positioned inside the slider I, the end part of the slider I is matched with the deep undercut and the shallow undercut of the product, the end part of the slider II is matched with the deep undercut, an inclined guide post 13 is fixedly arranged on the front mould, the inclined guide post and the front mould can be fixedly connected through a bolt, the inclined guide post is convenient to disassemble and assemble, a slider I inclined guide post through hole 12 is arranged on the slider I, a slider II inclined guide post through hole 5 is arranged on the slider II, a rear mould inclined guide post blind hole 4 is arranged on the rear mould, the inclined guide posts respectively pass through the slider I inclined guide post through hole and the slider II inclined guide post through hole, the lower end part of each inclined guide post through hole is positioned in the rear mould blind, the through hole of the first inclined guide post of the sliding block is larger than the diameter of the inclined guide post, a limiting pin hole 7 is formed in the first sliding block, a limiting pin 8 is arranged in the limiting pin hole, a limiting pin abdicating hole 6 is formed in the position, corresponding to the limiting pin, of the second sliding block, and the aperture of the abdicating hole of the limiting pin is larger than the diameter of the limiting pin.

Further, a wedging block 10 is fixedly installed on the front mold, the wedging block and the front mold can be fixedly connected through bolts or welded, the wedging block is matched with the rear end portions of the first sliding block and the second sliding block, the lower portions of matching surfaces of the wedging block, the first sliding block and the second sliding block are inclined planes, and the first sliding block and the second sliding block move along the inclined planes in the mold opening process, so that the mold opening process is more stable and reliable, and the phenomenon that a product is stained on the sliding blocks to cause damage of the back-off buckle is further prevented.

When the die is opened, the rear die moves downwards, under the action of the inclined guide post, the aperture of the inclined guide post through hole of the first sliding block is matched with the inclined guide post in the direction, the inclined guide post through hole of the first sliding block is larger than the diameter of the inclined guide post, the clearance distance is reserved on the right side of the inclined guide post, the second sliding block moves backwards firstly, the first sliding block does not move backwards, when the second sliding block moves back to the limiting pin, the inclined guide post just contacts with the first sliding block, and the first sliding block and the second sliding block move backwards simultaneously until the first sliding block and the second sliding block move backwards. The demoulding process has the advantages that the demoulding process is carried out twice in one sliding block, the deeper back-off is firstly released, the demoulding process is carried out after the product is shallow, the phenomenon that the back-off is damaged due to the fact that the product is stained on the sliding block is avoided, the structure is simple, the operation is convenient, and the action is reliable.

To sum up, the utility model discloses go out the dark back-off demoulding mechanism of slider in the slider that protects, prevent that the product from gluing and causing the back-off to draw bad on the slider, and the structure is fairly simple, convenient operation, action are reliable.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The deep-undercut demoulding mechanism for the slider in the slider is characterized by comprising a front mould, a rear mould, a slider I and a slider II, wherein the front mould and the rear mould are mutually matched to form a pouring cavity of a product, the slider I is positioned between the front mould and the rear mould, the slider II is positioned in the slider I, the end part of the slider I is matched with the deep undercut and the shallow undercut of the product, the end part of the slider II is matched with the deep undercut, an inclined guide post is fixedly arranged on the front mould, a slider I inclined guide post through hole is formed on the slider I, a slider II inclined guide post through hole is formed on the slider II, a rear mould inclined guide post blind hole is formed on the rear mould, the inclined guide posts respectively penetrate through a slider I inclined guide post through hole and a slider II inclined guide post through hole, the lower end part of the slider II inclined guide post through hole is positioned in a rear mould inclined guide post blind hole, the aperture of the slider II inclined guide post through hole, a limiting pin hole is formed in the first sliding block, a limiting pin is arranged in the limiting pin hole, a limiting pin abdicating hole is formed in the position, corresponding to the limiting pin, of the second sliding block, and the aperture of the limiting pin abdicating hole is larger than the diameter of the limiting pin.

2. The deep undercut ejection mechanism for slide block with out slide block of claim 1 wherein the front mold is fixedly mounted with a wedge block, the wedge block is engaged with the rear end of the first slide block and the rear end of the second slide block, and the lower part of the engaging surface of the wedge block with the first slide block and the second slide block is an inclined surface.