CN216683192U

CN216683192U - Material head first ejection die structure

Info

Publication number: CN216683192U
Application number: CN202123087725.3U
Authority: CN
Inventors: 王建明; 陈春艺
Original assignee: Xiamen Jiansheng Technology Co ltd
Current assignee: Xiamen Jiansheng Technology Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-06-07
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses a stub bar first ejection die structure which comprises a plurality of ejector pins, a movable insert, a return spring, an ejector rod, an ejector pin panel and an ejector pin bottom plate, wherein the ejector pin is arranged on the ejector pin panel; the lower ends of the thimbles are fixedly connected with movable inserts, the movable inserts are movably arranged in insert grooves between the thimble panel and the thimble bottom plate, the reset springs are arranged in spring grooves of the thimble panel, two ends of each reset spring respectively abut against the inner end face of the spring groove of the thimble panel and the movable inserts, the upper parts of the ejector rods movably penetrate through stepped holes of the thimble bottom plate, and the thimble panel and the thimble bottom plate are fixed together. Because the ejector plate is provided with the movable insert, when the mold is opened, the ejector rod of the injection molding machine acts on the movable insert firstly, the ejector pins on the movable insert firstly eject the sprue stub bar, and then the ejector plate drives the ejector pins to eject a product, so that the purpose of ejecting the stub bar firstly is realized.

Description

Material head first ejection die structure

Technical Field

The utility model relates to an injection mold, in particular to a mold structure with a material head firstly ejected out.

Background

The plastic injection mold is a tool for producing plastic products and has wide application. Some products need to be provided with a submarine gate, and during demolding, in order to realize ejection balance, a stub bar needs to be ejected first, so that a special ejection structure needs to be designed.

Disclosure of Invention

The utility model aims to provide a stub bar first ejection die structure capable of ejecting a stub bar first.

In order to achieve the purpose, the technical solution of the utility model is as follows:

the utility model relates to a stub bar first ejection die structure which comprises a plurality of ejector pins, a movable insert, a return spring, an ejector rod, an ejector pin panel and an ejector pin bottom plate; the upper ends of the ejector pins extend into the flow channels respectively, the lower ends of the ejector pins are fixedly connected with movable inserts, the movable inserts are movably mounted in insert grooves between the ejector pin panel and the ejector pin base plate, the reset springs are mounted in the spring grooves of the ejector pin panel, two ends of each reset spring abut against the inner end face of the spring groove of the ejector pin panel and the movable inserts respectively, the upper portions of the ejector rods penetrate through the stepped holes of the ejector pin base plate movably, shoulders at the upper ends of the ejector rods can abut against the stepped faces of the stepped holes of the ejector pin base plate, and the ejector pin panel and the ejector pin base plate are fixed together.

The plurality of thimbles are five thimbles, one of which is located at the center, and the other four thimbles are symmetrically arranged around the thimble at the center.

After the scheme is adopted, the ejector pin mold comprises a plurality of ejector pins, a movable insert, a reset spring, an ejector rod, an ejector pin panel and an ejector pin bottom plate, wherein the movable insert is arranged at an ejector pin plate, when the mold is opened, the ejector pin of the injection molding machine acts on the movable insert firstly, the ejector pins on the movable insert firstly eject the sprue stub bar, and then the ejector pin plate drives the plurality of ejector pins to eject a product, so that the purpose of ejecting the stub bar firstly is realized.

The utility model is further described with reference to the following figures and specific embodiments.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an isometric view of the utility model with the top panel removed;

FIG. 3 is an exploded perspective view of the present invention with the top plate removed;

FIG. 4 is a schematic view of an ejector gate stub bar of the present invention;

fig. 5 is a schematic view of the ejected product of the present invention.

Detailed Description

As shown in fig. 1-3, the utility model relates to a stub bar first-ejection die structure, which comprises five ejector pins 1, a movable insert 2, a return spring 3, an ejector rod 4, an ejector pin panel 5 and an ejector pin bottom plate 6.

The upper ends of the five thimbles 1 respectively extend into the flow channels, the lower ends of the five thimbles 1 are fixedly connected with the movable inserts 2, the movable inserts 2 are movably arranged in insert grooves 51 between the thimble panel 5 and the thimble base plate 6, the reset spring 3 is arranged in a spring groove 52 of the thimble panel 5, two ends of the reset spring 5 respectively abut against the inner end surface of the spring groove 52 of the thimble panel 5 and the movable inserts 2, the upper part of the ejector rod 4 is movably arranged in a stepped hole 61 of the thimble base plate 6 in a penetrating manner, a shoulder 41 at the upper end of the ejector rod 4 can abut against a stepped surface 62 of the stepped hole 61 of the thimble base plate 6, and the thimble panel 5 and the thimble base plate 6 are fixed together to form a top plate.

One thimble 1 in five thimbles 1 is located central authorities, and other four thimbles 1 set up around the thimble 1 symmetry of central authorities, and the top surface of five thimbles 1 is located the bottom surface of runner stub bar 100 cold burden well and subchannel respectively.

The working principle of the utility model is as follows:

as shown in fig. 4 and 5, after the injection molding is completed, the movable mold plate 10 is separated from the fixed mold plate, the ejector rod 4 starts to act on the movable insert 2, the ejector pin 1 on the movable insert 2 ejects the sprue stub 100, the sprue stub 100 firstly releases the product 200, and when the movable insert 2 movably touches the ejector pin panel 5, (the ejector pin panel 5 starts to move to drive the ejector pin of the ejector block to eject the product 200). When the die is closed, the thimble 1 and the movable insert 2 on the movable insert 2 are reset under the action of the reset spring 3. The ejector plate is reset under the action of the reset rod.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the utility model, which is defined by the appended claims and their equivalents and modifications within the scope of the description.

Claims

1. The utility model provides a stub bar is ejecting mould structure earlier which characterized in that: the ejector pin structure comprises a plurality of ejector pins, a movable insert, a return spring, an ejector rod, an ejector pin panel and an ejector pin bottom plate; the upper ends of the ejector pins extend into the flow channels respectively, the lower ends of the ejector pins are fixedly connected with movable inserts, the movable inserts are movably mounted in insert grooves between the ejector pin panel and the ejector pin base plate, the reset springs are mounted in the spring grooves of the ejector pin panel, two ends of each reset spring abut against the inner end face of the spring groove of the ejector pin panel and the movable inserts respectively, the upper portions of the ejector rods penetrate through the stepped holes of the ejector pin base plate movably, shoulders at the upper ends of the ejector rods can abut against the stepped faces of the stepped holes of the ejector pin base plate, and the ejector pin panel and the ejector pin base plate are fixed together.

2. The stub bar ejection-first die structure according to claim 1, wherein: the plurality of thimbles are five thimbles, one of which is located at the center, and the other four thimbles are symmetrically arranged around the thimble at the center.