CN210132020U

CN210132020U - Piston wax mould

Info

Publication number: CN210132020U
Application number: CN201920722013.8U
Authority: CN
Inventors: 潘开锋; 宦优胜; 于辉
Original assignee: Jiangyin Xin Lian Metal Products Co Ltd
Current assignee: Jiangyin Chengfeng Metal Products Co ltd; Jiangyin Xinlian Metal Products Co ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-03-10
Anticipated expiration: 2029-05-20

Abstract

The utility model discloses a piston wax matrix, including the wax matrix body, the wax matrix body includes a body structure, corresponds top wax matrix, head wax matrix and the skirt section wax matrix of each position of finished product piston, the head wax matrix includes bottom sealing connection's outer wall and inner wall, forms polygonal groove between outer wall and the inner wall, and the inner wall is open-top's appearance chamber structure, is equipped with the packing wax matrix that the melting point is higher than the wax matrix body in the polygonal groove, the shape and the polygonal groove looks adaptation of packing wax matrix. The utility model is used for realize the investment pattern integration casting of piston, reduce manufacturing cost, and can guarantee the accuracy of piston.

Description

Piston wax mould

Technical Field

The utility model relates to a technical field is made to the piston, especially relates to a piston wax matrix that is used for integral type to make the piston.

Background

A piston is a component capable of converting a linear motion into a circular motion through a connecting rod and a crankshaft, and is widely used in a reciprocating engine. Most of the existing piston structures are provided with pin holes on a piston body and then are connected with a connecting rod, namely the small end of a piston rod, through a pin shaft, and the head and the skirt of the piston are forged separately in the manufacturing process, so that the efficiency is low and the cost is high.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a piston wax matrix for realize the investment integration casting of piston, reduce manufacturing cost, and can guarantee the accuracy of piston.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

a piston wax matrix which is characterized in that: the piston skirt part wax mold comprises a wax mold body, wherein the wax mold body comprises an integral structure, a top wax mold, a head wax mold and a skirt part wax mold, the top wax mold, the head wax mold and the skirt part wax mold correspond to all parts of a finished piston, the skirt part wax mold is arranged on one side of the head wax mold, the bottom end of the skirt part wax mold exceeds the end face of the head wax mold, the outer side wall of the skirt part wax mold is lower than the outer side wall of the head wax mold, and a pin; the head wax mold comprises an outer wall and an inner wall which are connected in a sealing mode at the bottom ends, a polygonal groove is formed between the outer wall and the inner wall, the inner wall is of a cavity structure with an opening at the top, and the bottom end of the skirt wax mold is fixedly connected with the top end of the inner wall.

Preferably, a filling wax pattern with a melting point lower than that of the wax pattern body is arranged in the polygonal groove, and the shape of the filling wax pattern is matched with that of the polygonal groove.

Preferably, the filling wax pattern is made of water-soluble wax.

Preferably, the polygonal groove and the cavity are both of a regular polygonal structure concentrically arranged.

Preferably, the top of the filling wax pattern is provided with a convex part higher than the surface.

Preferably, a connecting shaft is arranged at the top end of the skirt wax mold.

The piston wax pattern of the utility model is used for realizing the investment pattern integral casting of the piston, the manufactured piston has a different structure from the traditional piston, namely the piston is the same as the wax pattern, the skirt part of the piston extends out of the piston head, the pin hole is arranged on the skirt part, and the like, the manufacture is more convenient, the normal function of the piston is not influenced, the heat radiation efficiency is improved, and the piston wax pattern can adapt to the large torque requirement of a diesel engine; in addition the utility model discloses a wax matrix is equipped with the filling wax matrix that the fusing point is less than the wax matrix body in polygonal groove, if adopt water-soluble wax matrix, can make the outer wall and the inner wall of head wax matrix indeformable, keep accurate concentricity, can easily detach the wax matrix again through the washing mode, detach with low costs, convenient and practical.

Due to the adoption of the technical scheme, the utility model discloses following technological effect has: the utility model is used for realize the investment pattern integration casting of piston, reduce manufacturing cost, and can guarantee the accuracy of piston.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional view taken in the direction AA of FIG. 2;

fig. 4 is a schematic structural view of the filling wax pattern of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

The piston wax pattern shown in fig. 1 to 4 comprises a wax pattern body, wherein the wax pattern body comprises a top wax pattern 1, a head wax pattern 2 and a skirt wax pattern 3 which are of an integral structure and correspond to various parts of a finished piston, the skirt wax pattern 3 is arranged on one side of the head wax pattern 2, the bottom end of the skirt wax pattern 3 exceeds the end surface of the head wax pattern 2, the outer side wall of the skirt wax pattern 3 is lower than the outer side wall of the head wax pattern 2, and a pin hole 31 is formed in the skirt wax pattern 3; the head wax mold 2 comprises an outer wall 21 and an inner wall 22 which are connected at the bottom end in a sealing mode, a polygonal groove 23 is formed between the outer wall 21 and the inner wall 22, the inner wall 22 is of a cavity structure with an opening at the top, the bottom end of the skirt wax mold 3 is fixedly connected with the top end of the inner wall 22, and the top ends of the two skirt wax molds 3 are provided with connecting shafts 5.

The utility model discloses in, be equipped with the packing wax matrix 4 that the melting point is higher than the wax matrix body in the polygonal groove 23, pack the shape and the polygonal groove 23 looks adaptation of wax matrix 4. When the polygonal groove 23 and the receiving cavity have a concentric regular polygonal structure, the filling wax pattern can maintain the accurate concentricity of the outer wall and the inner wall of the head wax pattern. The filling wax pattern 4 is preferably made of water-soluble wax, and the removal cost is low.

As shown in fig. 4, the top of the filling wax pattern 4 may be provided with a raised surface 41 to facilitate installation of the filling wax pattern into the polygonal recess.

The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.

Claims

1. A piston wax matrix which is characterized in that: the piston skirt wax mold comprises a wax mold body, wherein the wax mold body comprises an integral structure, a top wax mold (1) corresponding to each part of a finished piston, a head wax mold (2) and a skirt wax mold (3), the skirt wax mold (3) is arranged on one side of the head wax mold (2), the bottom end of the skirt wax mold (3) exceeds the end surface of the head wax mold (2), the outer side wall of the skirt wax mold (3) is lower than the outer side wall of the head wax mold (2), and a pin hole (31) is formed in the skirt wax mold (3); the head wax mold (2) comprises an outer wall (21) and an inner wall (22) which are connected at the bottom end in a sealing mode, a polygonal groove (23) is formed between the outer wall (21) and the inner wall (22), the inner wall (22) is of a cavity structure with an open top, and the bottom end of the skirt wax mold (3) is fixedly connected with the top end of the inner wall (22).

2. The piston wax pattern of claim 1, wherein: and a filling wax pattern (4) with a melting point lower than that of the wax pattern body is arranged in the polygonal groove (23), and the shape of the filling wax pattern (4) is matched with that of the polygonal groove (23).

3. The piston wax pattern of claim 2, wherein: the filling wax mold (4) is made of water-soluble wax.

4. The piston wax pattern of claim 2, wherein: the polygonal groove (23) and the accommodating cavity are of concentric regular polygon structures.

5. The piston wax pattern of claim 2, wherein: and the top of the filling wax mould (4) is provided with a convex part (41) higher than the surface.

6. The piston wax pattern of claim 1, wherein: and a connecting shaft (5) is arranged at the top end of the skirt wax mold (3).