CN222156487U - Mold delayed ejection structure - Google Patents

Abstract

The utility model discloses a delayed ejection structure of a mold, relates to the technical field of molds, comprises a B plate and a first mold core, a slider is arranged on the first mold core, a right ejector pin and a first left ejector pin are arranged inside the first mold core, the lower part of the right ejector pin is arranged in an upper ejector pin plate, the lower part of the first left ejector pin is connected with a first delayed insert pin, the device is provided with a delayed ejection structure, when starting, the mold is in a mold closing state, at this time, the ejector pin and the slider are closely attached to the molding position of the plastic product, when the plastic fills the mold cavity position and opens the mold after cooling, at this time, the slider will move horizontally, stop moving after reaching a certain position, then the upper and lower ejector pin plates of the mold will move vertically, drive the right ejector pin to start moving upward, due to the reaction force, the first left ejector pin and the first delayed insert pin will remain motionless until the activity gap of the delayed insert pin at the lower ejector pin plate is zero, the first left ejector pin and the first delayed insert pin will follow the upper and lower ejector pin plates to move vertically, and finally eject the plastic product.

Description

Mold delayed ejection structure

Technical Field

The utility model relates to the technical field of dies, in particular to a die delayed ejection structure.

Background

In the power connector industry, with the progress of technology, the requirements of terminal plastic products are higher and higher, and in order to realize the requirements of no thimble mark and no burr at the assembly position of the appearance surface of the product, the requirements of no thimble mark and no burr are required to be realized by conducting and delaying ejection;

the delayed ejection structure of the mold with the common name of CN203236675U is characterized in that when the technology is used, the top of the ejection section of the fine ejector pin is positioned at the deep bone position of the product during mold closing. The distance between the bottom of the delay thimble and the bottom of the limiting cavity is S. The distance between the thimble panel and the movable template is H. The delay thimble supports the fine thimble to prevent the fine bone position of the product from being glued more, when ejecting, the upward movement distance of the thimble panel and the thimble bottom plate is S, the product is ejected by the distance S, and the fine thimble relatively moves downwards, thereby achieving the purpose of protection. The ejector plate continues to move upwards until the product is completely ejected;

The device has some problems that the structure is complex and the use is complex, the ejection effect on the product is poor when the die is ejected, and the product is likely to be ejected or marked by the ejector pin in the ejection process.

We have therefore proposed a delayed ejection structure for a mold in order to solve the problems set forth above.

Disclosure of utility model

The utility model aims to provide a mold delayed ejection structure, which aims to solve the problems that the mold delayed ejection structure in the current market proposed by the background technology has poor delayed ejection effect and poor protection effect during ejection.

In order to achieve the aim, the utility model provides the technical scheme that the die delay ejection structure comprises a B plate and a first die core;

The novel mold core is characterized in that a sliding block is arranged on the first mold core, a right thimble and a first left thimble are arranged in the first mold core, the lower part of the right thimble is arranged in the upper thimble plate, the lower part of the first left thimble is connected with a first delay insert needle, the first delay insert needle is arranged in the lower thimble plate, the bottom of the first delay insert needle is connected with a bottom plate, and a mold core molding surface is arranged on the first mold core.

As the preferable technical scheme of the utility model, the right thimble is positioned under the sliding block, and the right thimble ejects the plastic product out of the first die core and the B plate after the plastic product is molded.

As the preferable technical scheme of the utility model, the right thimble is fixed between the upper thimble plate and the lower thimble plate, and the right thimble moves along with the upper thimble plate and the lower thimble plate.

As the preferable technical scheme of the utility model, the two ends of the right thimble are respectively provided with a first thimble upper end and a thimble lower end, and the lower part of the first left thimble is provided with a left thimble lower end.

As a preferable technical scheme of the utility model, the lower part of the first delay insert is connected with the bottom plate through the lower end of the delay insert, the upper end of the delay insert is arranged above the first delay insert, and a delay insert moving gap is arranged between the upper end of the delay insert and the first left thimble.

As the preferable technical scheme of the utility model, the middle distance of the movable gap of the delay insert pin is consistent with the distance between the upper end of the right ejector pin and the plastic product.

As the preferable technical scheme of the utility model, the first die core is symmetrically arranged about the center of the B plate, a right thimble and a first left thimble are arranged in the first die core, and the shape of the sliding block is L-shaped.

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

1. The device is provided with a delayed ejection structure, when a mold starts to mold a plastic product in an injection molding mode, the mold is in a mold clamping state, at the moment, the ejector pins and the sliding blocks are clung to the molding position of the plastic product, when the plastic fills the cavity of the mold and cools, the mold is opened, at the moment, the sliding blocks horizontally move away from the plastic product and stop moving after reaching a certain position, then the upper ejector pin plate and the lower ejector pin plate of the mold vertically move to drive the right ejector pin 4 to start to move upwards, and due to the reaction force, the first left ejector pin and the first delayed insert pin are kept still until the movable clearance of the delayed insert pin at the position of the lower ejector pin plate 6 is zero, the first left ejector pin and the first delayed insert pin are vertically moved along with the upper ejector pin plate and the lower ejector pin plate, and finally the plastic product is ejected;

2. The device is provided with protective structure, through delaying ejecting subassembly, can prevent that certain positions of injection molding product from being propped by crack and thimble seal in ejecting process, guaranteed yield and outward appearance demand of moulding plastics to reduced gliding processing requirement between ejecting subassembly and the first mould benevolence of shaping, reduced processing cost and the qualification rate of product, and delayed ejecting subassembly and last thimble board between have ejecting clearance, and delayed ejecting subassembly is pressed on last thimble board after certain distance through sliding delay ejecting subassembly.

Drawings

FIG. 1 is a schematic view of the main section structure of the present utility model;

FIG. 2 is a schematic diagram of a delayed ejection structure according to the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 2B according to the present utility model;

FIG. 5 is a schematic view of a three-dimensional structure of a slider according to the present utility model.

In the figure, a plate 1, a plate B, a first die core, a die core forming surface 201, a sliding block 301, a plastic product, a right thimble 4, a thimble 401, an upper thimble end 402, a first thimble lower end, an upper thimble plate 5, a lower thimble plate 6, a bottom plate 7, a bottom plate 8, a first left thimble 801, a left thimble lower end, a first delay needle setting 901, a delay needle setting lower end 902, a delay needle setting movable gap 903 and a delay needle setting upper end.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-5, the utility model provides a mold delay ejection structure, which comprises a plate B1 and a first mold core 2, wherein the first mold core 2 is arranged symmetrically about the center of the plate B1, a right ejector pin 4 and a first left ejector pin 8 are arranged in the first mold core 2, the shape of a sliding block 3 is L-shaped, the first mold core 2 is provided with the sliding block 3, the inside of the first mold core 2 is provided with the right ejector pin 4 and the first left ejector pin 8, the lower part of the right ejector pin 4 is arranged in an upper ejector plate 5, the right ejector pin 4 is fixed between the upper ejector plate 5 and a lower ejector plate 6, the right ejector pin 4 moves along with the upper ejector plate 5 and the lower ejector plate 6, the right ejector pin 4 is positioned under the sliding block 3, the right ejector pin 4 ejects out a plastic product 301 in the first mold core 2 and the plate B1 after the plastic product 301 is molded, the two ends of the right ejector pin 4 are respectively provided with an ejector pin upper end 401 and a first ejector pin lower end 402, the lower part of the first left ejector pin 8 is arranged under the first left ejector pin 8, and the lower part of the first left ejector pin 4 is connected with a first delay ejector pin 9;

Firstly, when a mould starts to injection-mould a plastic product 301, the mould is in a mould closing state, at the moment, the thimble and the sliding block 3 are clung to the forming position of the plastic product 301, when the plastic fills the cavity of the mould and cools, the mould is opened, at the moment, the sliding block 3 moves horizontally and is far away from the plastic product 301, and stops moving after reaching a certain position, then, the upper thimble plate 6 and the lower thimble plate 6 of the mould move vertically to drive the right thimble 4 to start to move upwards, and the first left thimble 8 and the first delay insert 9 keep motionless due to the reaction force;

The lower part of the first delay insert 9 is connected with the bottom plate 7 through the lower end 901 of the delay insert, the upper end 903 of the delay insert is arranged above the first delay insert 9, a delay insert movable gap 902 is arranged between the upper end 903 of the delay insert and the first left thimble 8, the first delay insert 9 is arranged in the lower thimble plate 6, the middle distance of the delay insert movable gap 902 is consistent with the distance between the thimble upper end 401 of the right thimble 4 and the plastic product 301, the bottom of the first delay insert 9 is connected with the bottom plate 7, and the first mold core 2 is provided with a mold core molding surface 201;

Until the delay insert pin movable gap 902 at the lower thimble plate 6 is zero, the first left thimble 8 and the first delay insert pin 9 can move vertically along with the upper thimble plate 6 and finally eject the plastic product 301, and the position of the plastic product 301 corresponding to the upper end 401 of the thimble can not leave a plurality of bad characteristics such as ejection marks or deformation.

When the mold delayed ejection structure is used, firstly, when the mold starts injection molding of a plastic product 301, the mold is in a mold clamping state, at the moment, the ejector pins and the sliding blocks 3 are clung to the molding position of the plastic product 301, when the plastic fills the cavity of the mold and cools, the mold is opened, at the moment, the sliding blocks 3 move horizontally and far away from the plastic product 301, stop moving after reaching a certain position, then, the upper ejector pin plate 6 and the lower ejector pin plate 6 of the mold move vertically to drive the right ejector pin 4 to start moving upwards, due to the reaction force, the first left ejector pin 8 and the first delayed ejector pin 9 keep motionless until the delay pin movable gap 902 at the lower ejector pin plate 6 is zero, the first left ejector pin 8 and the first delayed ejector pin 9 can move vertically along with the upper ejector pin plate 6, finally, the plastic product 301 is ejected at the position of the ejector pin 401, and a plurality of bad characteristics such as ejection marks or deformation are not left at the position of the plastic product 301 corresponding to the ejector pin.

To complete a series of work, and what is not described in detail in this specification is prior art that is well known to those skilled in the art.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. A delayed ejection structure of a die comprises a B plate (1) and a first die core (2);

The method is characterized in that:

The novel mold is characterized in that a sliding block (3) is arranged on the first mold core (2), a right thimble (4) and a first left thimble (8) are arranged inside the first mold core (2), the lower part of the right thimble (4) is arranged in the upper thimble plate (5), the lower part of the first left thimble (8) is connected with a first delay insert needle (9), the first delay insert needle (9) is arranged inside the lower thimble plate (6), the bottom of the first delay insert needle (9) is connected with a bottom plate (7), and a mold core molding surface (201) is arranged on the first mold core (2).

2. The mold delayed ejection structure according to claim 1, wherein the right ejector pin (4) is located right below the slider (3), and the right ejector pin (4) ejects the plastic product (301) from the first mold core (2) and the B plate (1) after the plastic product (301) is molded.

3. The mold delayed ejection structure according to claim 1, wherein the right ejector pin (4) is fixed between an upper ejector pin plate (5) and a lower ejector pin plate (6), and the right ejector pin (4) moves together with the upper ejector pin plate (5) and the lower ejector pin plate (6).

4. The mold delayed ejection structure according to claim 1, wherein two ends of the right ejector pin (4) are respectively provided with an ejector pin upper end (401) and a first ejector pin lower end (402), and a left ejector pin lower end (801) is provided below the first left ejector pin (8).

5. The mold delayed ejection structure according to claim 1, wherein the lower side of the first delayed insert (9) is connected to the bottom plate (7) through a delayed insert lower end (901), a delayed insert upper end (903) is disposed above the first delayed insert (9), and a delayed insert movable gap (902) is disposed between the delayed insert upper end (903) and the first left ejector pin (8).

6. The mold delayed ejection structure of claim 5, wherein a middle distance of the delayed insert clearance (902) is consistent with a distance between an upper end (401) of a right ejector pin (4) and a plastic product (301).

7. The delayed ejection structure of a mold according to claim 1, wherein the first mold core (2) is arranged symmetrically about the center of the B plate (1), a right ejector pin (4) and a first left ejector pin (8) are arranged in the first mold core (2), and the slider (3) is L-shaped.