CN212241987U

CN212241987U - Ejection device of injection mold

Info

Publication number: CN212241987U
Application number: CN202020352333.1U
Authority: CN
Inventors: 郑新刚
Original assignee: Shenzhen Yuyang Precision Mould Co ltd
Current assignee: Shenzhen Yuyang Precision Mould Co ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-12-29
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses an injection mold ejection device, which comprises a front mold and a rear mold, wherein the rear mold is formed by enclosing a rear mold frame and a rear mold frame bottom plate, a pushing mechanism is arranged in the enclosed interior, the rear mold frame is provided with a convex module and a stripper plate towards the contact end surface of the front mold, and the stripper plate is laid on the rear mold frame to ensure that the convex module extends out of the stripper plate; the pushing mechanism comprises a rear die frame, a thimble guide rod fixedly connected with the stripper plate, the other end of the thimble guide rod is connected with a first push plate, a spring is arranged between the first push plate and a bottom plate of the rear die frame, the pushing mechanism also comprises a row-position oil cylinder, a push rod of the row-position oil cylinder penetrates out of the first push plate and is connected with a second push plate, the second push plate is upwards provided with a plurality of thimbles capable of penetrating out of the stripper plate towards the front die, and a support head is arranged on the rod wall of each thimble, so that the thimbles can support the stripper plate after penetrating out of the stripper; the application provides a pair of injection mold ejecting device, when aiming at the drawing of patterns process, adopt two-way application of force, improve drawing of patterns speed and drawing of patterns quality.

Description

Ejection device of injection mold

Technical Field

The application relates to the technical field of injection molds, in particular to an ejection device of an injection mold.

Background

When a product is manufactured by using a mold, a material is injected into a cavity formed by a movable mold and a fixed mold, the product is formed after the material is cooled, and the solidified plastic product is ejected out by opening the mold after the plastic material is cooled and solidified, so that the molded product is obtained. The injection molding processing method has the characteristics of low molding cost, short molding period, simple molding process, easiness in molding of plastic products with complex shapes and the like, so that the injection molding processing method is widely applied to the field of plastic products.

At present, in the aspect of injection mold design, products are released from a buckling position through the ejection of the ejector pins, the ejector pins are in point contact with a workpiece, although the problem of point contact can be solved by increasing the number of the ejector pins, the ejection efficiency is low due to unidirectional thrust application, and plastic products are very easy to damage in the ejection process, so that the ejection quality cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the application provides an injection mold ejection device, which aims to adopt bidirectional force application and improve the demolding speed and the demolding quality in the demolding process.

According to one aspect, an injection mold ejection device is provided, which comprises a front mold and a rear mold, wherein the rear mold is formed by enclosing a rear mold frame and a rear mold frame bottom plate, a pushing mechanism is arranged in the enclosed interior, the rear mold frame is provided with a convex mold block and a stripper plate towards the contact end surface of the front mold, and the stripper plate is laid on the rear mold frame and extends out of the convex mold block; the pushing mechanism comprises a thimble guide rod extending out of the middle part of the rear die carrier and fixedly connected with the stripper plate, the other end of the thimble guide rod is connected with a first push plate, a spring is arranged between the first push plate and the bottom plate of the rear die carrier, the pushing mechanism further comprises row-position oil cylinders arranged on two sides of the spring, push rods of the row-position oil cylinders penetrate out of the first push plate and are connected with a second push plate, the second push plate is upwards provided with a plurality of thimbles capable of penetrating out of the stripper plate towards the front die, and supporting heads are arranged on the rod walls of the thimbles and can support the stripper plate after the thimbles penetrate out of the stripper plate.

Furthermore, the front mold comprises a front mold frame, a front mold frame bottom plate and a pouring component, the pouring component penetrates through the front mold frame bottom plate and extends into the front mold frame, the pouring component is provided with a pouring gate and two vertical runners communicated with the pouring gate, a first heating module is arranged between the two runners along the length direction, and the first heating module is connected with the controller.

Furthermore, the annular is seted up along runner length direction to the inside pouring subassembly that is close of preceding die carrier set up the second heating module in the annular, the second heating module is connected with the controller.

Further, the second heating module is a spiral heating pipe.

Furthermore, the front mould is also provided with a positioning opening, and the rear mould is provided with a guide post matched with the positioning opening.

According to the ejection device of the embodiment, the ejection device firstly pushes out the stripper plate, and then performs bidirectional force application under the action of the traveling oil cylinder and the spring, so that the demolding speed and the demolding quality of the plastic product are improved; simultaneously, this application still designs the pouring subassembly for the vertical runner of twice, sets up first heating module in two runner middle parts, sets up second heating module in two runner both sides for when pouring the stock, can avoid the stock to solidify the shaping, influence follow-up moulding plastics.

Drawings

Fig. 1 is a cross-sectional view of the ejection device in the present application during ejection.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic structural view of the pouring assembly.

Fig. 4 is a schematic diagram of the structure of the ready-to-inject solution.

Reference numerals shown in the drawings: 100. a front mold; 101. a front mold frame; 102. pouring the assembly; 103. a pouring gate; 104. a flow channel; 105. a first heating module; 106. a ring groove; 107. a second heating module; 108. a cavity; 109. positioning the opening; 110. a front mold frame base plate; 200. a rear mold; 201. a rear mould frame; 202. a rear mould base plate; 203. a male module; 204. a pushing mechanism; 205. a stripper plate; 206. a guide post; 207. a thimble guide rod; 208. a first push plate; 209. a spring; 210. a thimble; 211. a second push plate; 212. a slide oil cylinder; 213. supporting a head; 300. and (3) plastic products.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

The embodiment provides an injection mold ejection device, as shown in fig. 1-4, which comprises a front mold 100 and a rear mold 200, wherein the front mold 100 is composed of a front mold frame 101, a pouring assembly 102 and a front mold frame bottom plate 110, the rear mold 200 is enclosed by a rear mold frame 201 and a rear mold frame bottom plate 202, and an ejection mechanism 204 is arranged in the enclosed interior; the rear mold frame 201 is provided with a convex mold block 203 and a stripper plate 205 towards the contact end surface of the front mold 100, and the stripper plate 205 is laid on the rear mold frame 201, so that the convex mold block 203 extends out of the stripper plate 205.

The pushing mechanism 204 comprises a thimble guide rod 207 which extends out of the rear mould frame 201 and is fixedly connected with the middle part of the discharging plate 205, the other end of the thimble guide rod 207 is connected with a first push plate 208, a spring 209 is arranged between the first push plate 208 and the rear mould frame bottom plate 202, and the structure is designed as a lower force application point for the plastic product 300;

the pushing mechanism 204 further comprises row-position oil cylinders 212 arranged on two sides of the spring 209, push rods of the row-position oil cylinders 212 penetrate through the first push plate 208 and are connected with the second push plate 211, the second push plate 211 is upwards provided with a plurality of ejector pins 210 capable of penetrating out of the discharging plate 205 towards the front mold 100, rod walls of the ejector pins 210 are provided with supporting heads 213, so that after the ejector pins 210 penetrate out of the discharging plate 205, the supporting heads 213 can support the discharging plate 205, and the structure is designed as an upper force application point for the plastic product 300.

The specific working process is as follows: after the material is cooled to a solidified product, the front mold 100 is opened, then the slide oil cylinder 212 is started, the push rod pushes the second push plate 211 to move upwards, and the plastic product 300 is adhered to the discharge plate 205, so when the ejector pin 210 pushes upwards, the discharge plate 205 and the ejector pin guide rod 207 move upwards synchronously, when the spring 209 is changed from a compression state to a stretching state, a downward pulling force is provided for the discharge plate 205, and the ejector pin 210 pushes the plastic product 300 to provide an upward pushing force, and along with the continuous increase of the pushing force and the pulling force, the plastic product 300 is slowly separated from the discharge plate 205, therefore, the situation that the plastic product 300 is pushed upwards through the point contact of the downward pulling force of the surface contact and the ejector pin 210 can be known, the plastic product 300 can be separated quickly, the damage to the plastic product in the demolding process can be effectively avoided, and the.

In the above embodiments, in order to prevent the solidification of the blank solution during the injection process, the present application designs two sets of heating modules, wherein: the first heating module 105 is arranged in the pouring component 102, vertical runners 104 communicated with the pouring gate 103 are arranged on two sides of the first heating module 105, and the first heating module 105 and the runners 104 are parallel and are arranged along the length direction when viewed from the section of the drawing;

wherein: the second heating module 107 is disposed in a ring groove 106 formed in the front mold frame 101, and the ring groove 106 is located on both sides of the runner of the pouring module 102 and is also disposed along the longitudinal direction of the runner 104.

Under the action of the first heating module 105 and the second heating module 107, the heating effect can be effectively improved, and solidification in the flow passage 104 is avoided, meanwhile, it should be noted that both the first heating module 105 and the second heating module 107 are connected with a controller (not shown), and the heating effect of the second heating module 107 is optimal by adopting a spiral heating pipe.

Preferably, the front mold 100 is further provided with a positioning opening 109, and the rear mold 200 is provided with a guide post 206 engaged with the positioning opening 109.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims

1. An injection mold ejection device comprises a front mold and a rear mold, and is characterized in that the rear mold is formed by enclosing a rear mold frame and a rear mold frame bottom plate, a pushing mechanism is arranged in the enclosed interior, the rear mold frame is provided with a convex module and a stripper plate towards the contact end surface of the front mold, and the stripper plate is laid on the rear mold frame and extends out of the convex module; the pushing mechanism comprises a thimble guide rod extending out of the middle part of the rear die carrier and fixedly connected with the stripper plate, the other end of the thimble guide rod is connected with a first push plate, a spring is arranged between the first push plate and the bottom plate of the rear die carrier, the pushing mechanism further comprises row-position oil cylinders arranged on two sides of the spring, push rods of the row-position oil cylinders penetrate out of the first push plate and are connected with a second push plate, the second push plate is upwards provided with a plurality of thimbles capable of penetrating out of the stripper plate towards the front die, and supporting heads are arranged on the rod walls of the thimbles and can support the stripper plate after the thimbles penetrate out of the stripper plate.

2. The injection mold ejection device of claim 1, wherein the front mold comprises a front mold frame, a front mold frame bottom plate, and a pouring assembly extending into the front mold frame through the front mold frame bottom plate and having a pouring gate and two vertical runners communicating with the pouring gate, wherein a first heating module is disposed between the two runners along the length direction, and the first heating module is connected to the controller.

3. The injection mold ejection device of claim 2, wherein a ring groove is formed inside the front mold frame close to the pouring component along the length direction of the runner, a second heating module is arranged in the ring groove, and the second heating module is connected with the controller.

4. An injection mold ejection apparatus as in claim 3, wherein the second heating module is a spiral heating tube.

5. An injection mold ejection device as in any one of claims 1-4, wherein the front mold further comprises a positioning opening, and the rear mold comprises a guide post engaged with the positioning opening.