CN211135471U

CN211135471U - Mould core of split type structure

Info

Publication number: CN211135471U
Application number: CN201921774718.0U
Authority: CN
Inventors: 董钢; 戴家斌; 刘小四
Original assignee: Nanjing Jincheng Precision Machinery Co ltd
Current assignee: Nanjing Jincheng Precision Machinery Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-31
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a split type structure's mould core, which comprises a body, the top center department of body is equipped with the shoulder hole, and the bottom center department of body is equipped with the mounting hole that supplies the mounting screw, the shoulder hole communicates with each other with the mounting hole, the first hole section interpolation of shoulder hole is equipped with the mold insert, is equipped with the spring in the second hole section of shoulder hole, the bottom center department of mold insert is equipped with the screw hole, install the screw in the mounting hole, the pole body of screw passes the screw hole threaded connection of spring and mold insert bottom. The matching surface of the insert and the stepped hole of the utility model is designed into a taper structure, and transition fit is adopted, so that the connection precision is ensured; meanwhile, the axial force of the spring can prevent the screw from loosening when the mold core is used, the self-loosening effect is achieved during disassembly, the disassembly is very convenient, and the working efficiency is effectively improved.

Description

Mould core of split type structure

Technical Field

The utility model relates to an injection mold technical field, concretely relates to split type structure's mould core.

Background

In the die-casting production, after the whole core of the movable die and the fixed die of the die is subjected to die-casting production with a certain modulus, the top of the core is easy to crack or even collapse due to long-term extrusion force and aluminum liquid scouring, so that the product quality defect is caused. Because the core is of unitary construction, the replacement core is difficult to repair and must be replaced. The disassembly process for replacing the mold core is complicated and consumes a large amount of work, the structure of the mold core is complex, and the scrapping loss is large.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a split type structure's mould core has solved the core and has disassembled the problem that the process is numerous and diverse, consume consuming time.

The technical scheme is as follows: the utility model relates to a split type structure's mould core, which comprises a body, the top center department of body is equipped with the shoulder hole, and the bottom center department of body is equipped with the mounting hole that supplies the mounting screw, the shoulder hole communicates with each other with the mounting hole, the first hole section interpolation of shoulder hole is equipped with the mold insert, is equipped with the spring in the second hole section of shoulder hole, the bottom center department of mold insert is equipped with the screw hole, install the screw in the mounting hole, the pole body of screw passes the screw hole threaded connection of spring and mold insert bottom.

Further, the lateral wall of mold insert contracts gradually to the bottom and forms the lateral surface that has the tapering, the inside wall of the first hole section in the shoulder hole forms the medial surface that has the tapering, the medial surface tapering phase-match of the lateral surface of mold insert and the first hole section in the shoulder hole. When the dismounting device is used, the matching surfaces of the insert and the stepped hole are of conical structures, the function of self loosening is achieved, and the dismounting is very convenient.

Further, the taper of the outer side surface of the insert is 1.5 degrees.

Furthermore, the bottom of the first hole section in the stepped hole is provided with a positioning block, and the positioning block is matched with a positioning notch at the bottom of the insert. The positioning block is matched with the positioning notch, so that the insert and the stepped hole can be prevented from rotating when being connected and installed.

Further, the screw is an M8 screw.

Has the advantages that: the core design of the utility model greatly reduces the replacement cost, and only needs to replace the damaged part; the matching surfaces of the insert and the stepped hole are designed into a taper structure, and transition matching is adopted, so that the connection precision is ensured; meanwhile, the axial force of the spring can prevent the screw from loosening when the mold core is used, and the mold core plays a role of self-loosening during disassembly, so that the disassembly is very convenient, and the working efficiency is effectively improved; the utility model discloses an improvement has good popularization and using value.

Drawings

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

FIG. 2 is a cross-sectional view of the body;

FIG. 3 is a schematic view of an insert structure;

FIG. 4 is a schematic view of a screw structure;

fig. 5 is a schematic view of the structure of the body.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The invention will be further described with reference to the following figures and examples:

as shown in fig. 1 to 5, the mold core of the split structure of the present invention comprises a body 1, a stepped hole 2 is provided at the top center of the body 1, a mounting hole 3 for mounting a screw is provided at the bottom center of the body 1, the stepped hole 2 is communicated with the mounting hole 3, an insert 4 is inserted into a first hole section of the stepped hole 2, a spring 5 is provided in a second hole section of the stepped hole 2, a threaded hole 6 is provided at the bottom center of the insert 4, a screw 7 is provided in the mounting hole 3, the screw 7 is an M8 screw, and a shank of the screw 7 passes through the spring 5 and is in threaded connection with the threaded hole 6 at the bottom of the insert 4;

the outer side wall of the insert 4 gradually shrinks towards the bottom to form a tapered outer side face, the taper of the outer side face of the insert 4 is 1.5 degrees, the inner side wall of the first hole section in the stepped hole 2 is formed into a tapered inner side face, and the taper of the outer side face of the insert 4 is matched with that of the inner side face of the first hole section in the stepped hole 2, so that the matching faces of the insert 4 and the stepped hole 2 are in a tapered structure during disassembly, the function of self-loosening is achieved, and the disassembly is very convenient;

a positioning block 8 is arranged at the bottom of the first hole section in the stepped hole 2, the positioning block 8 is matched with a positioning notch 9 at the bottom of the insert 4, and the positioning block 8 is matched with the positioning notch 9 to prevent the insert 4 and the stepped hole 2 from rotating during connection and installation;

the working principle is as follows:

the mold core is made into a split structure and is divided into a body 1 and an insert 4, wherein the insert 4 is a part which is easy to damage and is a vulnerable part, and the damaged part needs to be replaced frequently. The body 1 and the insert 4 are in threaded connection by adopting an M8 screw 7 to form a whole core; because the insert 4 is circular, in order to prevent the insert 4 from rotating when being connected and installed with the body 1, a positioning notch 9 is designed at the bottom of the insert 4, and the positioning notch 9 is matched with a positioning block 8 in the stepped hole 2; meanwhile, in order to be convenient to disassemble, the matching surfaces of the body 1 and the insert 4 are designed into a taper structure and are in transition fit; be equipped with spring 5 in the second hole section of shoulder hole 2, when body 1 and mold insert 4 adopted M8 screw 7 threaded connection, middle spring 5 gave body 1 and the certain axial force of mold insert 4 respectively, can prevent during the use that screw 7 is not hard up, because both fitting surfaces of body 1 and mold insert 4 are the toper structure during the dismantlement, play the not hard up effect by oneself, it is very convenient to dismantle, has effectively improved work efficiency. The core design of the utility model greatly reduces the replacement cost, and only needs to replace the damaged part; the improvement has good popularization and application values.

Claims

1. The utility model provides a split type structure's mould core which characterized in that: the novel screw insert is characterized by comprising a body, wherein a stepped hole is formed in the center of the top of the body, a mounting hole for mounting a screw is formed in the center of the bottom of the body, the stepped hole is communicated with the mounting hole, an insert is inserted into a first hole section of the stepped hole, a spring is arranged in a second hole section of the stepped hole, a threaded hole is formed in the center of the bottom of the insert, a screw is mounted in the mounting hole, and a rod body of the screw penetrates through the spring to be in threaded connection with the threaded hole in the bottom of the insert.

2. The mold core of a split structure of claim 1, wherein: the lateral wall of mold insert contracts gradually to the bottom and forms the lateral surface that has the tapering, the inside wall of the first hole section in the shoulder hole forms the medial surface that has the tapering, the medial surface tapering phase-match of the lateral surface of mold insert and the first hole section in the shoulder hole.

3. The mold core of a split structure of claim 2, wherein: the taper of the outer side surface of the insert is 1.5 degrees.

4. The mold core of a split structure of claim 1, wherein: the bottom of the first hole section in the stepped hole is provided with a positioning block, and the positioning block is matched with a positioning notch at the bottom of the insert.

5. The mold core of a split structure of claim 1, wherein: the screw is an M8 screw.