CN218928511U

CN218928511U - Ejection mechanism of injection mold with embedded pin shaft inserts

Info

Publication number: CN218928511U
Application number: CN202223162126.8U
Authority: CN
Inventors: 宋宗燎; 王乐华; 刘永峰
Original assignee: Suzhou Jinghuisi Mould Co ltd
Current assignee: Suzhou Jinghuisi Mould Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-04-28
Anticipated expiration: 2032-11-25

Abstract

The utility model relates to the technical field of injection molds, in particular to an ejection mechanism of an injection mold with a pre-buried pin shaft insert, which comprises: the ejection mechanism of injection mold area pre-buried round pin axle inserts includes: the rear mold plate is internally provided with a thimble, a rear mold core and a plastic part product which is not ejected out and is demoulded are reserved on the surface of the rear mold core; the pin shaft guide tube is internally provided with an insert thimble, the end part of the insert thimble is connected with the rear top plate, and the surface of the bottom plate is provided with a pin shaft insert box; the beneficial effects are as follows: according to the utility model, the ejector pin is arranged in the rear template, the ejector device pushes the rear bottom plate to move, so that the ejector pin moves to push the product, meanwhile, the insert ejector pin is pushed by the rear bottom plate to move in the pin shaft guide tube, the pin shaft insert in the pin shaft insert box enters the pin shaft guide tube, the insert ejector pin pushes the pin shaft insert in the pin shaft guide tube into the rear mold core, and the pin shaft insert is placed into the plastic product when the plastic product is injection molded.

Description

Ejection mechanism of injection mold with embedded pin shaft inserts

Technical Field

The utility model relates to the technical field of injection molds, in particular to an ejection mechanism of an injection mold with a pre-buried pin shaft insert.

Background

A mold, a variety of molds and tools for industrially producing the desired product by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping, etc.;

in order to enhance the precision, strength, rigidity, wear resistance and the like of mutual movement or connection between plastic parts, a technology of arranging a metal insert on the plastic parts is widely used, and for an injection mold, a traditional solution method comprises the steps of firstly embedding the metal insert into a reserved position in the mold by a manual placement method, and then performing injection molding into a whole; or firstly injection molding a plastic part, then insert press fitting or assembly and the like;

the former metal inserts are placed in one mold, the injection molding period is long, the production efficiency is low, the requirements of automatic or intelligent production cannot be met, hidden danger exists in safe production, and the mold parts for placing the metal inserts are easy to wear, so that the maintenance cost of the mold is increased; the latter has certain requirements on the structural form of the metal inserts and the assembly, such as that the axial tensile force born by the connecting inserts is small, otherwise, the pull-off of the inserts can occur in the use process, and particularly for the pin shaft inserts with blind hole structures, the mechanical performance and the dimensional position precision are obviously difficult to be qualified in the press-fit or assembly mode after the inserts.

Disclosure of Invention

The utility model aims to provide an ejection mechanism of an injection mold with a pre-buried pin shaft insert, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an ejection mechanism of injection mold area pre-buried round pin axle inserts, its characterized in that: the ejection mechanism of injection mold area pre-buried round pin axle inserts includes:

the rear mold plate is internally provided with a thimble, a rear mold core and a plastic part product which is not ejected out and is demoulded are reserved on the surface of the rear mold core;

the pin shaft guide tube is internally provided with an insert thimble, the end part of the insert thimble is connected with the rear top plate, and the surface of the bottom plate is provided with a pin shaft insert box; a kind of electronic device with high-pressure air-conditioning system

The pin shaft insert is arranged in the pin shaft insert box;

the tip of back bottom plate is provided with back roof, and back roof is connected with the one end of connecting rod, and the other end of connecting rod is connected with the thimble bottom plate.

Preferably, the pin shaft inserts are arranged in the pin shaft insert boxes uniformly, and the pin shaft insert boxes are communicated with the inside of the pin shaft guide tube.

Preferably, pin shaft inserts are uniformly arranged in the pin shaft guide tube, the pin shaft inserts can move in the pin shaft guide tube, and two end faces of the reset spring are respectively connected with the rear template and the thimble plate.

Preferably, the end of the ejector plate is provided with an ejector pin bottom plate, the ejector plate is provided with ejector pins, and the front ends of the ejector pins penetrate through the rear template and are inserted into the rear mold core to form a molding surface.

Preferably, the rear top plate is connected with an ejection cylinder on the injection molding machine, ejection of the ejection cylinder pushes the rear top plate to move, the insert ejector pins are driven to move together, and the connecting rod drives the ejector pin bottom plate, the ejector pin plate and the ejector pins to be synchronous.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the ejector pin is arranged in the rear template, after the ejector pushes the rear bottom plate to move, the ejector pin moves to push the product, meanwhile, the insert ejector pin is pushed by the rear bottom plate to move in the pin shaft guide tube, the pin shaft insert in the pin shaft insert box enters the pin shaft guide tube, the insert ejector pin pushes the pin shaft insert in the pin shaft guide tube into the rear mold core, when a plastic product is injection molded, the pin shaft insert is placed into the plastic product, the ejector pin pushes out the product this time and pushes out the pin shaft insert required by the next group of products into the rear mold core, and the insert ejector pin and the ejector pin are reset under the pulling of the reset spring.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

fig. 2 is a schematic perspective view of the present utility model.

In the figure: the plastic part comprises a plastic part product 1, a pin shaft insert 2, a rear mold core 3, a rear mold plate 4, a pin shaft guide pipe 5, a thimble 6, a reset spring 7, a thimble plate 8, a thimble bottom plate 9, a bottom plate 10, a pin shaft insert box 11, an insert thimble 12, a connecting rod 13, a rear top plate 14 and a rear bottom plate 15.

Detailed Description

In order to make the objects, technical solutions, and advantages of the present utility model more apparent, the embodiments of the present utility model will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present utility model, are intended to be illustrative only and not limiting of the embodiments of the present utility model, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present utility model.

Embodiment one: referring to fig. 1 to 2, the present utility model provides a technical solution: an ejection mechanism of injection mold area pre-buried round pin axle inserts includes: the rear mold plate 4, the inside of the rear mold plate 4 is provided with a thimble 6, the rear mold core 3, and the surface of the rear mold core 3 is provided with a plastic part product 1 before ejection and demolding; the pin shaft guide tube 5, the inside of the pin shaft guide tube 5 is provided with an insert thimble 12, the end part of the insert thimble 12 is connected with a rear top plate 14, and the surface of the bottom plate 10 is provided with a pin shaft insert box 11; a kind of electronic device with high-pressure air-conditioning system

The pin insert 2 is arranged in the pin insert box 11.

Embodiment two:

on the basis of the first embodiment, the ejection mechanism with the embedded pin shaft inserts of the injection mold disclosed in the second embodiment of the utility model has the structure basically the same as that of the first embodiment, and is characterized in that the end part of the rear bottom plate 15 is provided with the rear top plate 14, the rear top plate 14 is connected with one end of the connecting rod 13, the other end of the connecting rod 13 is connected with the pin bottom plate 9, the pin shaft inserts 2 are provided with a plurality of pin shaft inserts 2, the pin shaft inserts 2 are uniformly arranged in the pin shaft insert box 11, the pin shaft insert box 11 is communicated with the interior of the pin shaft guide tube 5, the ejector pin 6 is arranged in the rear template 4, after the ejector pushes the rear bottom plate 15, the ejector pin 6 moves, the ejector pin 6 pushes a product after moving, meanwhile, the insert ejector pin 12 is pushed by the rear bottom plate 15 to move in the pin shaft guide tube 5, and the pin shaft inserts 2 in the pin shaft insert box 11 enter the pin shaft guide tube 5.

Embodiment III:

the ejection mechanism with embedded pin inserts for the injection mold disclosed in the third embodiment of the utility model has the structure basically the same as that in the second embodiment, and is different in that pin inserts 2 are uniformly arranged in pin guide pipes 5, pin inserts 2 can move in pin guide pipes 5, two end surfaces of a return spring 7 are respectively connected with a rear template 4 and a thimble plate 8, the end part of the thimble plate 8 is provided with a thimble bottom plate 9, the thimble plate 8 is provided with a thimble 6, the front end of the thimble 6 penetrates through the rear template 4 and is inserted into a rear mold core 3 to form a molding surface, a rear top plate 14 is connected with an ejection cylinder on the injection molding machine, the ejection of the ejection cylinder pushes the rear top plate 14 to drive an insert thimble 12 to move together, a connecting rod 13 drives the thimble bottom plate 9, the thimble plate 8 and the thimble 6 to be synchronous, when a plastic product 1 is injected, the pin inserts 2 are placed into the plastic product 1, the thimble 6 pushes the pin inserts 2 required by a next group of products into the rear mold core 3, and the thimble 12 and the thimble 6 are reset under the pulling of the return spring 7.

The scheme is specifically as follows: the inside of back template 4 is provided with thimble 6, after the ejector pushes away back bottom plate 15 and moves, make thimble 6 remove, thimble 6 removes back top pushing away the product, simultaneously, insert thimble 12 receives the top of back bottom plate 15 and moves in round pin axle stand pipe 5, round pin axle inserts 2 in the round pin axle inserts box 11 enter into round pin axle stand pipe 5, insert thimble 12 pushes away the round pin axle inserts 2 in the round pin axle stand pipe 5 in back mould benevolence 3, when moulding plastics product 1, the round pin axle inserts 2 just is placed into plastics product 1, thimble 6 pushes away this time the product with next required round pin axle inserts 2 of group of product has been pushed away in back mould benevolence 3, make insert thimble 12 and thimble 6 reset under reset spring 7's pulling.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An ejection mechanism of injection mold area pre-buried round pin axle inserts, its characterized in that: the ejection mechanism of injection mold area pre-buried round pin axle inserts includes:

a rear template (4), wherein a thimble (6) is arranged in the rear template (4), a rear mold core (3) is arranged on the surface of the rear mold core (3), and a plastic part product (1) before ejection and demolding is left;

the pin shaft guide tube (5), the inside of the pin shaft guide tube (5) is provided with an insert thimble (12), the end part of the insert thimble (12) is connected with a rear top plate (14), and the surface of the bottom plate (10) is provided with a pin shaft insert box (11); a kind of electronic device with high-pressure air-conditioning system

The pin shaft insert (2) is arranged in the pin shaft insert box (11);

the end of the rear bottom plate (15) is provided with a rear top plate (14), the rear top plate (14) is connected with one end of the connecting rod (13), and the other end of the connecting rod (13) is connected with the thimble bottom plate (9).

2. The ejection mechanism with embedded pin inserts for injection molds of claim 1, wherein: the pin shaft inserts (2) are provided with a plurality of pin shaft inserts (2), the pin shaft inserts (2) are uniformly arranged in the pin shaft insert box (11), and the pin shaft insert box (11) is communicated with the inside of the pin shaft guide tube (5).

3. The ejection mechanism with embedded pin inserts for injection molds of claim 2, wherein: pin shaft inserts (2) are uniformly arranged in the pin shaft guide pipes (5), the pin shaft inserts (2) can move in the pin shaft guide pipes (5), and two end faces of the reset springs (7) are respectively connected with the rear template (4) and the thimble plates (8).

4. An ejection mechanism for an injection mold with embedded pin inserts as in claim 3, wherein: the end of the ejector plate (8) is provided with an ejector pin bottom plate (9), the ejector plate (8) is provided with an ejector pin (6), and the front end of the ejector pin (6) penetrates through the rear template (4) and is inserted into the rear die core (3) to form a molding surface.

5. The ejection mechanism with embedded pin inserts for injection molds of claim 4, wherein: the rear top plate (14) is connected with an ejection cylinder on the injection molding machine, ejection of the ejection cylinder pushes the rear top plate (14) to move, the insert ejector pins (12) are driven to move together, and the connecting rod (13) drives the ejector pin bottom plate (9), the ejector pin plate (8) and the ejector pins (6) to be synchronous.