CN219112808U - Wax injection mold for investment casting - Google Patents

Abstract

The utility model relates to a wax injection mold for investment casting, which belongs to the technical field of investment casting and comprises a first mold and a second mold, wherein the first mold and the second mold form a cavity, a wax rod hole and a wax injection channel in a closed state, the wax rod hole and the wax injection channel are respectively communicated with the cavity, a first core and a second core are respectively arranged on opposite side walls of the second mold, the first core and the second core slide in the cavity towards the central position of the cavity, driving assemblies for driving the first core and the second core to act are respectively arranged on opposite side walls of the second mold, a cavity is formed by surrounding the first core, the second core, the first mold and the second mold, and a water through hole is respectively formed in the first mold and the second mold. The wax injection mold has the characteristic of guaranteeing the quality of the wax mold on the premise of improving the working efficiency.

Description

Wax injection mold for investment casting

Technical Field

The utility model relates to the technical field of investment casting, in particular to a wax injection mold for investment casting.

Background

Investment casting is also called precision casting or lost wax casting, which is to make an accurate fusible model by fusible materials, coat a plurality of layers of refractory coating on the model, dry and harden the model into an integral model shell, heat the model for shell fusion, bake the model at high temperature to form a refractory model shell, pour liquid metal into the model shell, and cool the model shell to obtain the casting.

Currently, in the investment casting work of a gate valve, each part of the gate valve is usually subjected to investment casting separately, and then each wax mold is welded on a gate rod to form a module, so that the working efficiency is seriously affected in the working process, and the quality problem of castings is easy to occur, so that a mold for integrally manufacturing the wax is needed.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a wax injection mold for investment casting.

The utility model provides a wax injection mold for investment casting, which adopts the following technical scheme:

the utility model provides an annotate wax mould for investment casting, includes first mould and second mould, first mould and second mould form cavity, wax stick hole and annotate wax passageway under closed condition, wax stick hole and annotate wax passageway and be linked together with the cavity respectively, the relative both sides wall of second mould is provided with first core and second core respectively, first core, second core slide in the cavity towards the central point of cavity put, the relative both sides wall of second mould is provided with the drive assembly of drive first core and second core action respectively, first core, second core, first mould and second mould surround into a die cavity, the through-hole has been seted up respectively to first mould and second mould.

Preferably, the openings for sliding the first core and the second core are respectively formed in two opposite side walls of the second mold, the driving assembly comprises a frame and an air cylinder, two groups of driving assemblies are arranged, the two groups of driving assemblies are respectively arranged on two opposite side walls of the second mold, the air cylinder is fixedly arranged on the frame, and the output ends of the two groups of driving assemblies are respectively connected with the first core and the second core.

Preferably, the size of the opening on the opposite sides of the second mould is smaller than the size of the first core and the second core, and the first core and the second core slide in the opening.

Preferably, the side wall of the second mould, which is away from the first mould, is provided with a supporting component, the supporting component comprises a supporting plate and supporting columns, the supporting columns are provided with a plurality of groups, the second mould is provided with column holes for placing the supporting columns, and the column holes are communicated with the cavity.

Preferably, in the state that the support column is arranged in the column hole, one end of the support column, which is far away from the support plate, is in a smooth curved surface with the inner wall of the cavity.

Preferably, the side wall of the second die, which is away from the first die, is provided with a wax stick support in a sliding manner.

Preferably, the wax injection channel is provided with at least two groups, the side walls of the first mould and the second mould are provided with wax injection holes communicated with the wax injection channel, and the first mould and the second mould are provided with buffer grooves communicated with the wax injection holes and the wax injection channel.

Preferably, the buffer groove is circular.

In summary, the utility model has the following beneficial technical effects:

1. the first die, the second die, the first core and the second core surround the forming cavity, the first core and the second core are controlled to move through the air cylinder, errors caused by manual work are reduced, so that the die casting system and the whole wax part are made into wax, the working procedures of repairing the wax and welding the wax are not needed, and the quality problems of castings, such as cold joint, welding seams, wax drops and the like, are avoided.

2. The support column is used for supporting the manufactured wax mould by arranging the support component, and after the wax mould is cooled and molded, the demolding treatment of the wax mould is facilitated by sliding the support column.

Drawings

FIG. 1 is a schematic diagram of an exploded construction of a wax injection mold for investment casting according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a wax injection mold for investment casting;

fig. 3 is a schematic side view of a second mold showing the chamber.

Reference numerals illustrate: 1. a first mold; 2. a second mold; 21. a chamber; 211. a cavity; 22. a wax rod hole; 23. a wax injection channel; 24. a water through hole; 25. an opening; 26. a post hole; 27. a wax stick holder; 28. injecting wax holes; 29. a buffer tank; 3. a first core; 4. a second core; 5. a drive assembly; 51. a frame; 52. a cylinder; 6. a support assembly; 61. a support plate; 62. a support column; 7. and (5) a wax mold.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses a wax injection mold for investment casting. Referring to fig. 1 and 2, the present embodiment takes a gate valve-shaped wax pattern 7 as an example. The utility model provides a wax injection mould 7 utensil for investment casting, including first mould 1 and second mould 2, be provided with cavity 21 between first mould 1 and the second mould 2, wax stick hole 22 and annotate wax passageway 23 and be linked together with cavity 21 respectively, the relative both sides wall of second mould 2 has first core 3 and second core 4 respectively sliding connection, first core 3, second core 4 slide in cavity 21 towards the central point of cavity 21 put, the relative both sides wall of second mould 2 is provided with the drive assembly 5 that drive first core 3 and second core 4 moved respectively, first core 3, second core 4, first mould 1 and second mould 2 enclose into a die cavity 211, the shape of die cavity 211 is consistent with the shape of wax mould 7, the through-hole 24 that runs through oneself has been seted up respectively to the lateral wall of first mould 1 and second mould 2.

Referring to fig. 1 and 2, opposite side walls of the second mold 2 are respectively provided with openings 25 for sliding the first core 3 and the second core 4, and the sizes of the two openings 25 are respectively smaller than those of the first core 3 and the second core 4, namely, the first core 3 and the second core 4 partially slide out of the openings 25, so that the phenomenon that the first core 3 and the second core 4 are separated from the cavity 21 is avoided, and meanwhile, the communication between the cavity 21 and the external environment is reduced; the driving assembly 5 comprises a frame 51 and air cylinders 52, the driving assembly 5 is provided with two groups, the two groups of frames 51 are respectively arranged on two opposite side walls of the second die 2, the air cylinders 52 are fixedly arranged on the side walls of the frames 51, which deviate from the second die 2, output ends of the two groups of air cylinders 52 respectively penetrate through the frames 51 and are respectively connected with the first core 3 and the second core 4, and through the arrangement of the air cylinders 52, the automatic sliding of the first core 3 and the second core 4 is realized, so that on one hand, the operation of staff is facilitated, and on the other hand, the positions of the first core 3 and the second core 4 in the cavity 21 are more stable.

Referring to fig. 2 and 3, a supporting component 6 is arranged on the side wall of the second mold 2, which faces away from the first mold 1, the supporting component 6 comprises a supporting plate 61 and supporting columns 62, a plurality of groups of supporting columns 62 are arranged, column holes 26 for the supporting columns 62 to be placed in are formed in the second mold 2, the column holes 26 are communicated with the cavity 21, the supporting component 6 plays a role in supporting the wax pattern 7 in the cavity 211, and meanwhile, the wax pattern 7 is taken out conveniently; when the support column 62 is located in the column hole 26, one end of the support column 62 away from the support plate 61 forms a smooth curved surface with the inner wall of the cavity 21, so that the surface of the wax pattern 7 is smooth, and the quality of the wax pattern 7 is ensured.

Referring to fig. 2 and 3, a wax stick holder 27 is slidably connected to a side wall of the second mold 2 facing away from the first mold 1, so that the wax stick holder 27 is adjustable according to the length of the wax stick; the wax injection channels 23 are provided with at least two groups, the side walls of the first die 1 and the second die 2 are provided with wax injection holes 28 communicated with the wax injection channels 23, the first die 1 and the second die 2 are provided with buffer grooves 29 communicated with the wax injection holes 28 and the wax injection channels 23, the buffer grooves 29 are circular, and the buffer grooves 29 are favorable for smoothly injecting wax liquid into the cavity 211.

The embodiment of the utility model relates to a wax injection mold for investment casting, which is based on the implementation principle that:

the first mould 1 and the second mould 2 are adjusted to a closed state, the support column 62 is inserted into the column hole 26, the position of the support column 62 is adjusted, one end of the support column 62 away from the support plate 61 is in a smooth state with the inner wall of the cavity 21, when wax liquid needs to be injected into the cavity 21, the cylinder 52 is started, the first core 3 and the second core 4 start sliding, the first mould 1, the second mould 2, the first core 3 and the second core 4 are surrounded to form a cavity 211 which is consistent with the shape of the wax mould 7, a wax rod is placed into the wax rod hole, the length of the wax rod support 27 is adjusted according to the length of the wax rod, and the wax injection equipment is aligned with the wax injection hole 28 to perform wax injection; to annotate wax work and accomplish, let in cold water to the limbers 24 and cool off the work, treat wax matrix 7 shaping, open first mould 1, start cylinder 52 for first core 3 and second core 4 are slided towards the direction that keeps away from each other, promote backup pad 61, under the effect of support column 62, wax matrix 7 takes out from die cavity 211, thereby accomplish the whole system wax of mould gating system and wax matrix 7, need not to repair wax and save the welding wax process, work efficiency has been improved, and avoid the rosin joint, welding seam, wax droplet etc. to influence the quality problem of foundry goods.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a wax injection mould for investment casting, its characterized in that includes first mould (1) and second mould (2), first mould (1) and second mould (2) form cavity (21), wax stick hole (22) and annotate wax passageway (23) under closed condition, wax stick hole (22) and annotate wax passageway (23) and be linked together with cavity (21) respectively, the opposite both sides wall of second mould (2) are provided with first core (3) and second core (4) respectively, first core (3), second core (4) slide in cavity (21) towards the central point of cavity (21), the opposite both sides wall of second mould (2) are provided with drive assembly (5) of the action of drive first core (3) and second core (4) respectively, first core (3), second core (4), first mould (1) and second mould (2) enclose into a die cavity (211), first core (1) and second mould (2) are equipped with water through hole (24) respectively.

2. The wax injection mold for investment casting according to claim 1, wherein openings (25) for sliding the first core (3) and the second core (4) are respectively formed in opposite side walls of the second mold (2), the driving assembly (5) comprises a frame (51) and a cylinder (52), the driving assembly (5) is provided with two groups, the two groups of the frame (51) are respectively arranged on opposite side walls of the second mold (2), the cylinder (52) is fixedly arranged on the frame (51), and output ends of the two groups of the cylinder (52) are respectively connected with the first core (3) and the second core (4).

3. A wax injection mould for investment casting according to claim 2, characterized in that the size of the openings (25) on opposite sides of the second mould (2) is smaller than the size of the first core (3) and the second core (4), the first core (3) and the second core (4) being partly slid at the openings (25).

4. The wax injection mold for investment casting according to claim 1, wherein the side wall of the second mold (2) deviating from the first mold (1) is provided with a supporting component (6), the supporting component (6) comprises a supporting plate (61) and supporting columns (62), the supporting columns (62) are provided with a plurality of groups, the second mold (2) is provided with column holes (26) for placing the supporting columns (62), and the column holes (26) are communicated with the cavity (21).

5. The wax injection mold for investment casting according to claim 4, wherein the end of the support column (62) away from the support plate (61) is smoothly curved with the inner wall of the cavity (21) in a state where the support column (62) is placed in the column hole (26).

6. The wax injection mold for investment casting according to claim 4, wherein the second mold (2) is slidably provided with a wax stick holder (27) facing away from the side wall of the first mold (1).

7. Wax injection mold for investment casting according to claim 1, characterized in that the wax injection channels (23) are provided with at least two groups, the side walls of the first mold (1) and the second mold (2) are provided with wax injection holes (28) communicated with the wax injection channels (23), and the first mold (1) and the second mold (2) are provided with buffer grooves (29) communicated with the wax injection holes (28) and the wax injection channels (23).

8. The wax injection mold for investment casting of claim 7, wherein the buffer slot (29) is circular.

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