CN211638273U

CN211638273U - Push ring type ejection structure for die casting die

Info

Publication number: CN211638273U
Application number: CN201922427924.0U
Authority: CN
Inventors: 罗尧文
Original assignee: Foshan Yide Mould Manufacturing Co ltd
Current assignee: Foshan Yide Mould Manufacturing Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-09
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to a mould technical field, in particular to push away ejecting structure of ring formula for die casting die includes: the movable mould comprises a movable mould template, wherein a core structure is arranged at the center of the upper end of the movable mould template, the core structure comprises a lower base, a cylindrical male mould and an ejection mechanism, and the ejection mechanism comprises an ejection ring, an ejector pin mounting plate, a first ejector pin and a second ejector pin. The utility model has the advantages that: the ejection mechanism with the ejection ring is adopted, the contact surface with the product is greatly increased, so that the product and the slag ladle are ejected completely, the direct contact between the ejector pin and the aluminum material is isolated, the temperature of the ejector pin is stably controlled, the phenomena of pulling and clamping of the ejector pin are prevented, the ejection stress is more uniform, the problem that the product is damaged or the ejection force is insufficient during ejection is completely solved, the number of times of production pause is reduced, and the production efficiency is improved.

Description

Push ring type ejection structure for die casting die

Technical Field

The utility model relates to a mould technical field, in particular to push away ejecting structure of ring formula for die casting die.

Background

In the die-casting production, the ejection structure design of the die often directly influences the demolding efficiency of the product and indirectly influences the die-casting production efficiency. The products produced by die casting are various in types, each product has different relative characteristics, different products are dealt with, and the ejection mechanism of the die is five-door.

In the product forming and ejecting process, if the long cylindrical product adopts the mode of up-down mold separation, the ejection is often a very painful problem, because the cross-sectional area of the cylindrical product left for contacting the thimble is often not large, the size of the thimble is limited. The used dome needle is too small, and when the used dome needle faces a heavy product, the supporting force of the thimble is insufficient and the thimble is easy to bend; if the special-shaped flat top is used, the cross sectional area of the top of the flat top is small, the stress of a contact surface is large, the phenomena of concave top and top cracking products are easy to occur, the processing difficulty of the flat ejector pin is large, and the production cost is also indirectly influenced.

SUMMERY OF THE UTILITY MODEL

To the above problem, an object of the utility model is to provide an it is ejecting stable even, do not damage the product, improve ejecting efficiency and be used for die casting die's the ejecting structure of push ring formula.

In order to realize the purpose, the technical scheme of the utility model is that:

a push ring type ejection structure for a die casting mold, comprising: the movable die comprises a movable die plate, wherein a core structure is arranged at the center of the upper end of the movable die plate, the core structure comprises a lower base and a cylindrical male die, a stepped sink is arranged at the center of the lower base, the cylindrical male die is vertically connected to the center of the stepped sink, cushion blocks are connected to two sides of the lower end of the movable die plate through guide pillars, and the lower end of each cushion block is connected with a bottom plate; the ejection mechanism comprises an ejection ring, a thimble mounting plate, a first thimble and a second thimble, the ejection ring is slidably sleeved on the cylindrical male die and is located in the stepped sinking groove, the thimble mounting plate is arranged between the cushion blocks and is located on the upper surface of the bottom plate, the first thimble and the second thimble are uniformly distributed on the thimble mounting plate, the upper end of the first thimble passes through the movable die plate and the lower base is connected with the lower end surface of the ejection ring, the upper end of the second thimble passes through the movable die plate and the cylindrical male die, and the upper end of the second thimble is flush with the upper end of the cylindrical male die.

Further, the core structure is embedded in the center of the movable die plate.

Further, the bottom of the cylindrical male die is connected with the lower base through screws.

Furthermore, a support column is vertically arranged on the bottom plate, and the upper end of the support column penetrates through the thimble mounting plate to be abutted against the lower end face of the movable mould plate.

Further, the thimble mounting panel includes top pin clamp plate and the thimble bottom plate of range upon range of setting from top to bottom, all be equipped with on four angles of thimble clamp plate and slide and wear to establish ejecting release link on the movable mould template.

Furthermore, the diameter of the first thimble is larger than that of the second thimble

The utility model has the advantages that: the ejection mechanism with the ejection ring is adopted, the contact surface with the product is greatly increased, so that the product and the slag ladle are ejected completely, the direct contact between the ejector pin and the aluminum material is isolated, the temperature of the ejector pin is stably controlled, the phenomena of pulling and clamping of the ejector pin are prevented, the ejection stress is more uniform, the problem that the product is damaged or the ejection force is insufficient during ejection is completely solved, the number of times of production pause is reduced, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the ejection state of FIG. 1;

fig. 3 is a schematic structural diagram of the middle ejection mechanism of the present invention.

In the figure, 10-moving die plate; 11-a cushion block; 12-a base plate; 13-a guide post; 14-a support column; 20-core structure; 21-lower base; 211-step sink; 22-cylindrical male die; 30-an ejection mechanism; 31-an ejector ring; 32-a thimble mounting plate; 321-a thimble pressing plate; 322-thimble base plate; 33-a first thimble; 34-a second thimble; and 35-ejecting a reset rod.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, a push ring type ejection structure for a die casting mold includes a movable die plate 10 and an ejection mechanism 30. The movable die plate 10 is made of one of H13, 4Cr5MoV1Si, 3Cr2W8V, 8407 die steel and SKD61, a core structure 20 is arranged at the center of the upper end of the movable die plate 10, and specifically, the core structure 20 is embedded in the center of the movable die plate 10 and used for forming a forming structure of a formed product. The core structure 20 comprises a lower base 21 and a cylindrical male die 22, wherein a stepped sunken groove 211 is formed in the center of the lower base 21, the cylindrical male die 22 is vertically connected to the center of the stepped sunken groove 211, the bottom of the cylindrical male die 22 is connected with the lower base 21 through screws, two sides of the lower end of the movable die plate 10 are connected with cushion blocks 11 through guide pillars 13, the lower end of each cushion block 11 is connected with a bottom plate 12, and the cushion blocks 11 and the bottom plate 12 serve as a supporting base of the whole die.

The ejection mechanism 30 includes an ejection ring 31, an ejector pin mounting plate 32, a first ejector pin 33 and a second ejector pin 34, the ejection ring 31 is slidably sleeved on the cylindrical punch 22 and is located in the stepped sinking groove 211, the ejector pin mounting plate 32 is disposed between the spacers 11 and is located on the upper surface of the base plate 12, the ejector pin mounting plate 32 includes an ejector pin pressing plate 321 and an ejector pin base plate 322 which are stacked up and down, four corners of the ejector pin pressing plate 321 are respectively provided with an ejection reset rod 35 which is slidably disposed on the movable die plate 10, the first ejector pin 33 and the second ejector pin 34 are uniformly distributed on the ejector pin mounting plate 32 at intervals and in an annular shape, and specifically, the lower ends of the first ejector pin 33 and the second ejector pin 34 are disposed in the sinking hole of the ejector pin pressing plate 321 and then are. The upper end of the first thimble 33 passes through the movable die plate 10 and the lower base 21 to be connected with the lower end surface of the ejector ring 31, the upper end of the second thimble 34 passes through the movable die plate 10 and the cylindrical punch 22, and the upper end of the second thimble 34 is flush with the upper end of the cylindrical punch 22. The first ejector pin 33 and the second ejector pin 34 are pushed simultaneously through the ejector pin mounting plate 32, the first ejector pin 33 is responsible for ejecting the ejection ring 31 to enable a product to be demoulded, and the second ejector pin 34 is responsible for directly contacting with the product to eject the product.

In the aspect of selecting the diameter of the ejector pins, the diameter of the first ejector pin 33 is larger than that of the second ejector pin 34, and in order to match the ejection of the ejection ring 31, the first ejector pin 33 selected at the bottom of the ejection ring 31 can also be selected as large as possible, so that the strength of the first ejector pin 33 is large, and the phenomenon that the top of the first ejector pin 33 is bent when the ejection ring 31 is ejected due to insufficient supporting force of the first ejector pin 33 is prevented. And the second thimble 34 directly contacts with the product to eject, so that a thimble with a smaller diameter is adopted, and an overlarge thimble mark is prevented from being left on the product after demoulding.

In addition, the supporting columns 14 are vertically arranged on the bottom plate 12, the upper ends of the supporting columns 14 penetrate through the thimble mounting plates 32 to be abutted against the lower end face of the movable die plate 10, the whole die is supported, the requirement on rigidity of a rear die is improved, and instantaneous deformation of the die caused by machine impact during generation is reduced.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides an ejecting structure of push ring formula for die casting die which characterized in that includes:

the movable die comprises a movable die plate, wherein a core structure is arranged at the center of the upper end of the movable die plate, the core structure comprises a lower base and a cylindrical male die, a stepped sink is arranged at the center of the lower base, the cylindrical male die is vertically connected to the center of the stepped sink, cushion blocks are connected to two sides of the lower end of the movable die plate through guide pillars, and the lower end of each cushion block is connected with a bottom plate;

the ejection mechanism comprises an ejection ring, a thimble mounting plate, a first thimble and a second thimble, the ejection ring is slidably sleeved on the cylindrical male die and is located in the stepped sinking groove, the thimble mounting plate is arranged between the cushion blocks and is located on the upper surface of the bottom plate, the first thimble and the second thimble are uniformly distributed on the thimble mounting plate, the upper end of the first thimble passes through the movable die plate and the lower base is connected with the lower end surface of the ejection ring, the upper end of the second thimble passes through the movable die plate and the cylindrical male die, and the upper end of the second thimble is flush with the upper end of the cylindrical male die.

2. The push-ring type ejection structure for a die-casting mold as claimed in claim 1, wherein the core structure is provided embedded in the center of the movable die plate.

3. The push-ring type ejection structure for the die-casting mold as claimed in claim 1, wherein the cylindrical punch bottom is connected to the lower base by a screw.

4. The push ring type ejection structure for the die-casting mold as claimed in claim 1, wherein a support pillar is vertically provided on the bottom plate, and an upper end of the support pillar passes through the ejector pin mounting plate and abuts against a lower end surface of the movable mold plate.

5. The ejector ring type ejection structure for the die-casting die as claimed in claim 1, wherein the ejector pin mounting plate comprises an ejector pin pressing plate and an ejector pin base plate which are stacked up and down, and four corners of the ejector pin pressing plate are provided with ejection reset rods which are slidably arranged on the movable die plate in a penetrating manner.

6. The push-ring type ejection structure for the die-casting mold as claimed in claim 1, wherein a diameter of the first ejector pin is larger than a diameter of the second ejector pin.