Wax injection mold suitable for columnar wax mold

Abstract

The utility model provides a wax injection mould suitable for a columnar wax mould, which comprises a core pulling rod, a forming cavity of the wax injection mould contains a columnar cavity, the volume ratio of the columnar cavity to the forming cavity is more than 80%, the bottom of the columnar cavity is connected with a trumpet-shaped pouring gate cavity, and the trumpet-shaped pouring gate cavity is connected with the core pulling rod. And the bottom of the sprue cavity is connected with a containing groove for containing the core pulling rod, and the containing groove penetrates through the side face of the wax injection mold. And the surface of the prepared wax mold is free of recesses.

Description

TECHNICAL FIELD

[0001] The utility model belongs to investment casting technical field, concretely relates to a wax injection mold suitable for columnar wax mold. BACKGROUND

[0002] The investment casting process of silica sol needs to make a wax mold on a wax injection machine through a mold first, and after the wax mold is made, the wax mold is cooled and placed for more than 24 hours, so that the wax mold is fully cooled and shrunk before the production of a silica sol shell mold. The wax mold made after the wax injection of the conventional wax mold is a solid wax block. After the cooling and shrinking process, the surface depression degree can reach 0.6mm-0.8mm, and the mold repair personnel need to manually fill the wax to flatten it. SUMMARY

[0003] In order to solve the technical problem of obvious depression in the cooling process of the wax mold, the utility model provides a wax injection mold suitable for columnar wax mold, and the surface of the wax mold made is free of depression.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the technical scheme that:

[0005] A wax injection mold suitable for columnar wax mold, comprising a core-pulling rod, the forming cavity of the wax injection mold contains a columnar cavity, and the volume ratio of the columnar cavity to the forming cavity is more than 80%, the bottom of the columnar cavity is connected with a trumpet-shaped sprue cavity, the bottom of the sprue cavity is connected with a containing groove containing the core-pulling rod, and the containing groove penetrates through the side surface of the wax injection mold.

[0006] After the core-pulling rod is put into the wax injection mold, one end of the core-pulling rod is located outside the wax injection mold, and the other end can be close to the end of the columnar cavity.

[0007] Preferably, the end of the core-pulling rod is provided with a pulling cap, and the pulling cap is just located outside the wax injection mold, so as to facilitate the pulling out of the core-pulling rod.

[0008] Preferably, the distance between the two sides of the core-pulling rod and the inner wall of the columnar cavity is 10-15mm, so as to ensure the thin-wall and wax mold forming quality requirements.

[0009] The utility model has the advantages that:

[0010] 1、The wax injection mold is provided with a core-pulling rod, and a thin-wall hollow wax mold is made after the core-pulling rod is pulled out, so that the wax mold is cooled and solidified during the wax injection process, and the depression caused by the high shrinkage rate of the wax part due to the difficulty in heat dissipation and cooling caused by the excessive thickness of the wax mold is avoided.

[0011] 2. The hollow wax mold is not easy to stick the sprue, and a sprue cavity is left in the wax injection mold, so that the wax mold is integrally formed with the sprue. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic view of the wax injection mold suitable for the columnar wax mold.

[0013] Figure 2 It is a structure schematic view of the wax mold.

[0014] In the figure, marks are as follows: 1, the wax injection mold, 2, the core-pulling rod, 3, the pulling cap, 4, the wax mold, 5, the sprue, 11, the columnar cavity, 12, the sprue cavity, 13, the containing groove. DETAILED DESCRIPTION

[0015] In order to more clearly and specifically describe the technical scheme of the utility model, the utility model is further described below through related embodiments. The following embodiments are only used to specifically describe the implementation method of the utility model, and do not limit the protection scope of the utility model.

[0016] Embodiment 1

[0017] As shown in Figure 1 and Figure 2 , a wax injection mold suitable for a columnar wax mold, comprising a core-pulling rod 2, the forming cavity of the wax injection mold 1 contains a columnar cavity 11, and the volume ratio of the columnar cavity 11 to the forming cavity is above 80%, the bottom of the columnar cavity is connected with a horn-shaped sprue cavity 12, the bottom of the sprue cavity 12 is connected with a containing groove 13 containing the core-pulling rod, and the containing groove 13 penetrates through the side surface of the wax injection mold 1.

[0018] Embodiment 2

[0019] Based on the embodiment 1, the embodiment is characterized in that:

[0020] After the core-pulling rod 2 is put into the wax injection mold 1, one end of the core-pulling rod 2 is located outside the wax injection mold 1, and the other end can be close to the end of the columnar cavity 11.

[0021] The end of the core-pulling rod 2 is provided with a pulling cap 3, and the pulling cap 3 is just located outside the wax injection mold 1.

[0022] The distance between the two sides of the core-pulling rod and the inner wall of the columnar cavity is 10 mm.

[0023] Embodiment 3

[0024] Based on the embodiment 1, the embodiment is characterized in that:

[0025] After the core-pulling rod 2 is put into the wax injection mold 1, one end of the core-pulling rod 2 is located outside the wax injection mold 1, and the other end can be close to the end of the columnar cavity 11.

[0026] The end of the core-pulling rod 2 is provided with a pulling cap 3, and the pulling cap 3 is just located outside the wax injection mold 1.

[0027] The distance between the two sides of the core-pulling rod and the inner wall of the columnar cavity is 15mm.

[0028] Example 4

[0029] This example is based on example 1:

[0030] After the core-pulling rod 2 is put into the wax injection mold 1, one end of the core-pulling rod 2 is located outside the wax injection mold 1, and the other end can be close to the end of the columnar cavity 11.

[0031] The end of the core-pulling rod 2 is provided with a pulling cap 3, and the pulling cap 3 is just located outside the wax injection mold 1.

[0032] The distance between the two sides of the core-pulling rod and the inner wall of the columnar cavity is 12mm.

[0033] The above-described examples only express the specific implementation of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A wax injection mold suitable for columnar wax molds, characterized in that: The wax injection mold comprises a core-pulling rod, a columnar cavity in a forming cavity of the wax injection mold, and a volume ratio of the columnar cavity to the forming cavity is more than 80%, a bottom of the columnar cavity is connected to a trumpet-shaped gate cavity, a bottom of the gate cavity is connected to a containing groove containing the core-pulling rod, and the containing groove penetrates through a side surface of the wax injection mold.

2. A wax injection mold suitable for use with a cylindrical wax pattern according to claim 1, wherein: After the core-pulling rod is put into the wax injection mold, one end of the core-pulling rod is located outside the wax injection mold, and the other end can be close to an end of the columnar cavity.

3. A wax injection mold suitable for use with a columnar wax form according to claim 2, wherein: An end of the core-pulling rod is provided with a pulling cap, and the pulling cap is just located outside the wax injection mold.

4. A wax injection mold suitable for use with a columnar wax form according to claim 2, wherein: Distances from both sides of the core-pulling rod to inner walls of the columnar cavity are 10-15 mm.

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