CN115401168A

CN115401168A - Stepped cold wax core structure for manufacturing casting wax mold core

Info

Publication number: CN115401168A
Application number: CN202211041455.9A
Authority: CN
Inventors: 李晏涛
Original assignee: Guizhou Anji Aviation Precision Casting Co Ltd
Current assignee: Guizhou Anji Aviation Precision Casting Co Ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-11-29

Abstract

The invention discloses a stepped cold wax core structure for manufacturing a casting wax mold core, which comprises the following components: form a continuous step type cold wax core structure integral. When the wax mould is demoulded with the mould, the wax mould is supported by a continuous step type cold wax core structure, the continuous thicker and thinner part of the wax mould can not be stressed unstably and cracked, and the problem that the wax core is easy to be stressed unstably and cracked at the continuous thicker and thinner part in the wax mould in a wax core contact mode is solved.

Description

Stepped cold wax core structure for manufacturing casting wax mold core

Technical Field

The invention relates to a stepped cold wax core structure for manufacturing a casting wax mold core, belonging to the technical field of casting wax molds.

Background

When a core of a casting wax mold is manufactured, the wax mold is sometimes continuously thicker and thinner, and the thickness difference of the thicker and thinner wax mold wall is 1:8, because the wall thickness difference is large, the wax mold of the casting is easy to be cooled and shrunk unevenly, the local shrinkage of the casting is caused at the joint of the thickness and the thickness, and the dimensional precision of the casting is influenced.

In a cold wax core for preventing wax from shrinking and sinking with Chinese patent publication No. CN217252622U, the technology adopted is disclosed as follows: placing a cold wax core with a proper specification into a thick and large part of a mold, wherein an external edge corner contacts the mold, wax liquid enters a gap between the mold and the cold wax core to form a wax part during wax injection, the universal cold wax core is completely wrapped by the wax liquid at the moment, and the edge corner part of the universal cold wax core is also melted by the heat of the wax liquid to form a whole; although the cold wax cores can form a support to prevent shrinkage and depression when the wax piece is cooled and molded, for the thick and thin continuous part of the wax mold, the first cold wax core, the second cold wax core and the third cold wax core can only exist in a contact mode but not continuously, and after the filled wax material is cooled, the problem that the wax piece is easy to break due to unstable stress at the thick and thin continuous part during demolding is solved.

Disclosure of Invention

In order to solve the technical problem, the invention provides a stepped cold wax core structure for manufacturing a casting wax mold core.

The invention is realized by the following technical scheme.

The invention provides a stepped cold wax core structure for manufacturing a casting wax mold core, which comprises the following components:

form a continuous step type cold wax core structure integral.

Cascaded cold wax core structure is including being a plurality of and interval distribution main part wax cores, and carries out fixed connection with a plurality of interval distribution's main part wax cores and constitutes the holistic supporter of a continuous cascaded cold wax core structure.

The middle part of the main wax core is provided with a through hole, and the support body is fixed on the through hole of the main wax core in an interference penetrating manner to form fixed connection.

The support body is multisection, and every section of support body and main part wax core welded fastening are connected.

The outer part of the main body wax core is integrally and fixedly connected with a point contact ball.

The punctiform contact balls are positioned on the same side of the main body wax core and are a plurality of up-down spaced balls.

The point contact ball is diagonally positioned on the main body wax core.

Further comprising: and the wax mold wraps the main body wax core and the support body.

The wax pattern is divided into a thick portion wrapping the exterior of the main body wax core and a thinner portion wrapping the support body.

The invention has the beneficial effects that: when the wax mould is demoulded from the mould, the wax mould is supported by a continuous step type cold wax core structure, the continuous thicker and thinner part of the wax mould can not be stressed unstably and cracked, and the problem that the wax core is easy to be stressed unstably and cracked at the continuous thicker and thinner part in the wax mould in a wax core contact mode is solved.

Drawings

FIG. 1 is a schematic view of a stepped cold wax core configuration of the present invention;

FIG. 2 is a schematic view of a stepped cold wax core configuration and wax pattern forming package according to the present invention;

in the figure: 1-step type cold wax core structure; 11-a bulk wax core; 12-a support; 13-point contact balls; 2-wax pattern; 21-thick major part; 22-thinner portion.

Detailed Description

The technical solutions of the present invention are further described below, but the scope of the claims is not limited thereto.

As shown in fig. 1-2.

The application discloses a cascaded cold wax core structure for making foundry goods wax matrix core includes:

the main body wax core 11 supports the thick most part 21 of the wax mould 2, and the main body wax core 11 is distributed at intervals to support the thick most parts 21; a point-shaped contact ball 13 is fixedly connected outside the main body wax core 11. A plurality of point-like contact balls 13 are positioned on the same side of the main body wax core 11 and are spaced up and down; the point contact balls 13 are diagonally located on the main body wax core 11.

The support body 12 is used for supporting the thin part 22 of the wax mould 2, and the support body 12 is used for fixedly connecting a plurality of main wax cores 11 which are distributed at intervals to form a continuous stepped cold wax core structure 1. The middle part of the main body wax core 11 is provided with a through hole, and the support body 12 is fixed on the through hole of the main body wax core 11 in an interference penetrating manner to form fixed connection. The support body 12 is in a plurality of sections, and each section of the support body 12 is fixedly connected with the main body wax core 11 in a welding mode.

Because a plurality of interval distribution's main part wax core 11 carries out fixed connection through supporter 12 and constitutes a continuous cascaded cold wax core structure 1 wholly, place the mould in inject the wax material solidification back, main part wax core 11 is located the thick major part 21 of wax matrix 2, supporter 12 is located the thinner part 22 of wax matrix 2, when wax matrix 2 and mould drawing of patterns, under wax matrix 2 obtained the continuous cascaded cold wax core structure 1 and supported, the continuous thicker thinner department of wax matrix 2 can not take place the atress unstability and the fracture appears, the easy atress unstability of taking place in the continuous thicker thinner department of wax core contact form in the wax matrix has been solved and the cracked problem appears. Due to the existence of the main body wax core 11 and the support body 12, when the wax material is cooled and shrunk, the wax material of the thick part 21 and the thin part 22 are continuous and the wax material of the thin part 22 is effectively supported, so that the wax mould 2 is ensured not to shrink.

When the wax material is cooled, the punctiform contact balls 13 of the main wax core 11 are wrapped on the punctiform contact balls 13, so that the punctiform contact balls 13 extend into the wax mold 2, and the surface quality of the wax mold 2 and the mold during demolding is ensured.

The utility model provides a cascaded cold wax core structure for making foundry goods wax matrix core still includes:

the wax pattern 2 is formed by wrapping a main body wax core 11 and a support body 12, and the wax pattern 2 is divided into a thick part 21 wrapping the main body wax core 11 and the outer part of the point contact ball 13 and a thin part 22 wrapping the support body 12.

Claims

1. A stepped cold wax core structure for making a casting wax pattern core, comprising:

form a continuous step type cold wax core structure (1) as a whole.

2. The stepped cold wax core structure for making a casting wax pattern core of claim 1, wherein: cascaded cold wax core structure (1) is including being a plurality of and interval distribution main part wax core (11), and carries out fixed connection with a plurality of interval distribution's main part wax core (11) and constitutes the holistic supporter (12) of a continuous cascaded cold wax core structure (1).

3. The stepped cold wax core structure for making a wax pattern core for castings according to claim 2, wherein: the middle part of the main body wax core (11) is provided with a through hole, and the support body (12) is fixed on the through hole of the main body wax core (11) in an interference penetrating manner to form fixed connection.

4. The stepped cold wax core structure for making a casting wax pattern core of claim 2, wherein: the support body (12) is in a plurality of sections, and each section of the support body (12) is fixedly connected with the main body wax core (11) in a welding mode.

5. The stepped cold wax core structure for making a casting wax pattern core of claim 2, wherein: the outer part of the main body wax core (11) is fixedly connected with a point-shaped contact ball (13).

6. The stepped cold wax core structure for making a casting wax pattern core of claim 5, wherein: the point contact balls (13) are positioned on the same side of the main body wax core (11) and are vertically spaced.

7. The stepped cold wax core structure for making a casting wax pattern core of claim 6, wherein: the point contact ball (13) is diagonally positioned on the main body wax core (11).

8. The stepped cold wax core structure for making a casting wax pattern core according to claim 2 or 5, wherein: further comprising: a wax mould (2) wrapping the main body wax core (11) and the support body (12).

9. The stepped cold wax core structure for making a wax pattern core for castings according to claim 8, wherein: the wax mould (2) is divided into a thick large part (21) wrapping the outside of the main body wax core (11) and the point contact ball (13); and a thinner portion (22) wrapping the support body (12).