Welding end parting structure of supercharger turbine profiling die

Abstract

A welding end parting structure of a supercharger turbine profiling mold comprises an upper mold and a lower mold, a wax injection cavity is formed in the upper mold, and a wax injection opening which is vertically formed and injects wax into the wax injection cavity is formed in the bottom wall of the lower mold; the welding end insert comprises a fixed end insert and an embedded insert, and the embedded insert and the fixed end insert are combined to seal the top of the wax injection cavity; and an exhaust groove is formed in the embedded insert and is used for exhausting in the wax injection process of the mold. The wax injection device is compact and reasonable in structure and convenient to operate, gas generated in the wax injection process can be effectively exhausted, and bubbles or cavities are prevented from being formed. And secondly, due to the special design of the exhaust groove, the gas can be exhausted more smoothly and efficiently. Besides, the wax filling port is positioned at the lower end of the wax filling cavity, and the embedded insert is positioned at the upper end of the wax filling cavity, so that the wax liquid is not easy to enter the exhaust groove under the action of gravity, the smoothness of the exhaust groove is ensured, and the quality and the precision of the wax mould are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a welding end parting structure of a turbocharger turbine compression mold. Background Art

[0002] There are two main wax injection methods for existing supercharger turbine wax molding dies: bottom injection and top injection. In the bottom injection method, wax is injected from the bottom of the mold to the top of the mold. Because there is air in the mold cavity, the existing mold structure is prone to holding part of the air in the mold cavity at the top of the mold, that is, the wax mold welding end plate (commonly known as "air holding"), which will cause:

[0003] 1. The pressed wax model has defects at the top welding end or there are many bubbles on the surface of the wax model, which makes the wax model scrapped;

[0004] 2. During the wax pressing process, "vacuum" is easily formed at the welding end of the wax mold. During the mold opening process, the welding end of the wax mold is affected, causing the wax mold at that location to deform. The dimensional fluctuation in the height direction is large and easily exceeds the dimensional tolerance requirements, resulting in the scrapping of the wax mold. This is the technical problem to be solved by this application.

[0005] Therefore, we propose a welding end parting structure of a supercharger turbine compression mold. Utility Model Content

[0006] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a welding end parting structure of a supercharger turbine compression mold, which can effectively remove the gas generated during the wax injection process and prevent the formation of bubbles or cavities.

[0007] The technical solution adopted by the utility model is as follows:

[0008] A welding end parting structure of a supercharger turbine compression mold, comprising:

[0009] An upper mold and a lower mold, wherein a wax injection cavity is arranged in the upper mold, and a wax injection port is arranged vertically on the bottom wall of the lower mold and is used to inject wax into the wax injection cavity;

[0010] The welding end insert comprises a fixed end insert and an embedded insert, wherein the embedded insert is combined with the fixed end insert to seal the top of the wax injection cavity;

[0011] The exhaust groove provided on the embedded insert is used for exhausting the air during the wax pressing process of the mold.

[0012] As a further improvement of the above technical solution:

[0013] The embedded insert comprises a columnar body, an annular groove is provided at the lower end of the column, and an embedding opening is provided at the center of the annular groove.

[0014] The embedding opening forms a concave welding end at the top of the wax mold during the wax mold forming process.

[0015] The top of the column is connected with an end plate, and in a recessed groove arranged on the fixed end insert, a pressure plate presses against the end plate to limit the embedded insert.

[0016] The exhaust groove includes an annular wedge opening arranged at the lower end of the side wall of the column, and at least one vertical groove arranged vertically and connected to the wedge opening.

[0017] An inclined surface docking with the vertical groove is also arranged on the lower end surface of the end plate to further expand the opening area of ​​the exhaust groove.

[0018] A certain gap is arranged between the side wall of the end plate and the fixed end insert, and the gap serves as an outlet of the exhaust groove to discharge the gas directly to the outside of the mold.

[0019] The wax filling port is located at the lower end of the wax injection cavity, and the embedded insert is located at the upper end of the wax injection cavity, ensuring that the wax liquid is not easy to enter the exhaust groove under the action of gravity.

[0020] The beneficial effects of the utility model are as follows:

[0021] The utility model has a compact and reasonable structure and is easy to operate. It can effectively remove the gas generated during the wax injection process and prevent the formation of bubbles or voids. Secondly, due to the special design of the exhaust groove (such as the combination of the wedge mouth, the vertical groove and the inclined surface), the gas can be discharged more smoothly and efficiently. In addition, since the wax filling port is located at the lower end of the wax injection cavity and the embedded insert is located at the upper end of the wax injection cavity, the wax liquid is not easy to enter the exhaust groove under the action of gravity, thereby ensuring that the exhaust groove is unobstructed. Finally, this design also takes into account the stability and safety of the wax mold molding process, ensuring the quality and precision of the wax mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.

[0023] Figure 2 It is a three-dimensional diagram of the embedded insert in the utility model.

[0024] Among them: 100, upper mold; 200, lower mold; 300, wax mold; 400, embedded insert; 500, pressing plate; 600, fixed end insert; 700, wax filling port;

[0025] 401, column; 402, end plate; 403, embedding port; 404, annular groove; 405, exhaust groove. DETAILED DESCRIPTION

[0026] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0027] like Figure 1-Figure 2 As shown, this embodiment discloses a welding end parting structure of a supercharger turbine compression mold, which is used in the field of mold design and manufacturing, especially in the process involving precision casting or wax mold molding. The structure has an upper mold 100 and a lower mold 200 arranged up and down, a wax injection cavity is arranged in the upper mold 100, and a wax injection port 700 is arranged vertically and injected into the wax injection cavity on the bottom wall of the lower mold 200. At the same time, in this embodiment, the biggest highlight is that the welding end insert of the wax mold 300 is designed to be split, including an embedded insert 400 and a fixed end insert 600, and a 0.03mm deep exhaust groove 405 is opened on the embedded insert 400 to exhaust during the mold wax pressing process, eliminate the air holding or vacuum phenomenon generated during the wax pressing process, and avoid the wax mold 300 from being scrapped due to insufficient air holding pressure, many bubbles or large size fluctuations.

[0028] The technical solution adopted by the utility model is as follows:

[0029] First, the embedded insert 400 is designed to be tightly combined with the fixed end insert 600 to form a complete wax injection cavity. This design allows molten wax to be injected into the wax injection cavity through the wax injection port 700 during the wax model manufacturing process, thereby forming the desired wax model 300. The special feature of the embedded insert 400 is that it can not only participate in the molding of the wax model as a part of the mold, but also its specially designed exhaust groove 405 can effectively exhaust the gas generated during the wax injection process, ensuring the integrity and quality of the wax model.

[0030] The main body of the embedded insert 400 is a cylindrical column 401, and a circular groove 404 is formed at the lower end thereof. An embedding opening 403 is formed at the center of the circular groove 404, and the embedding opening will form a concave welding end at the top of the wax model 300 during the wax model forming process. The design of the embedding opening 403 not only provides a precise size and shape for the welding end, but also ensures the connection strength and stability between the welding end and the wax model main body.

[0031] An end plate 402 is designed at the top of the column 401. This end plate 402 plays a key role in the wax model forming process. First, as a part of the embedded insert 400, it participates in the wax model forming process. Secondly, in the sink groove set on the fixed end insert 600, the pressure plate 500 is used to support the end plate 402, thereby limiting the position of the embedded insert 400. This limiting design ensures the stability of the embedded insert 400 during the wax injection process and prevents displacement or deformation caused by the flow of wax liquid.

[0032] However, the real highlight of the embedded insert 400 is the exhaust groove 405 provided on its side wall. The design of this exhaust groove cleverly solves the problem of gas that may be generated during the wax injection process. During the process of wax liquid being injected into the wax injection cavity, the temperature and pressure changes of the wax liquid, as well as the tiny gaps or pores that may exist in the mold material itself, may cause the generation and accumulation of gas. If these gases cannot be discharged in time, bubbles or cavities will be formed inside the wax mold, seriously affecting the quality and precision of the wax mold.

[0033] In order to solve this problem, an exhaust groove 405 is provided on the side wall of the embedded insert 400. This exhaust groove is composed of several parts: first, an annular wedge is provided at the lower end of the side wall of the column 401. This wedge serves as the entrance of the exhaust groove and is connected to the inside of the wax injection cavity. Secondly, at least one vertically arranged vertical groove is also provided on the side wall of the column 401. These vertical grooves are connected with the wedge to form the main channel of the exhaust groove. In addition, an inclined surface connected with the vertical groove is also provided on the lower end face of the end plate 402. This inclined surface not only further expands the opening area of ​​the exhaust groove, but also allows the gas to be discharged more smoothly. Finally, a certain gap is also provided between the side wall of the end plate 402 and the fixed end insert 600. This gap serves as the outlet of the exhaust groove to discharge the gas directly to the outside of the mold.

[0034] This exhaust groove design has several significant advantages: first, it can effectively remove the gas generated during the wax injection process and prevent the formation of bubbles or cavities. Secondly, due to the special design of the exhaust groove (such as the combination of wedges, vertical grooves and inclined surfaces), the gas can be discharged more smoothly and efficiently. In addition, since the wax filling port 700 is located at the lower end of the wax injection cavity and the embedded insert 400 is located at the upper end of the wax injection cavity, the wax liquid is not easy to enter the exhaust groove 405 under the action of gravity, thereby ensuring that the exhaust groove is unobstructed. Finally, this design also takes into account the stability and safety of the wax mold molding process, ensuring the quality and precision of the wax mold.

[0035] After adding parting to the original mold welding end:

[0036] 1. Eliminate the phenomenon of holding air or vacuuming during the wax pressing process, avoiding the scrapping of wax model 300 due to incompleteness or excessive bubbles in the wax model. The scrapping rate of wax model 300 is reduced from 8% to 3%;

[0037] 2. When the welding end has different size requirements or the height of the welding end fluctuates greatly, the mold can adjust the height of the welding end by replacing the embedded insert 400, instead of taking out the entire fixed end insert 600 for repair or even remanufacturing if the size of the welding end is to be adjusted as in the original structural design, which saves mold adjustment time and shortens the product development cycle;

[0038] 3. Several embedded inserts 400 with different heights of the welding ends are manufactured. When the height of the welding end fluctuates, the embedded inserts 400 with corresponding sizes can be replaced to realize the switching of different welding end sizes;

[0039] The exhaust groove design of the embedded insert 400 is an innovative and effective solution, which provides a reliable guarantee for the exhaust of gas during the wax modeling process. Through this design, we can manufacture more complete, accurate and high-quality wax model products to meet various precision casting or wax modeling needs.

[0040] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A welding end parting structure of a supercharger turbine die, characterized in that: include: An upper mold (100) and a lower mold (200), wherein a wax injection cavity is provided in the upper mold (100), and a wax injection port (700) is vertically arranged on the bottom wall of the lower mold (200) and is used to inject wax into the wax injection cavity; The welding end insert comprises a fixed end insert (600) and an embedded insert (400), wherein the embedded insert (400) is combined with the fixed end insert (600) to seal the top of the wax injection cavity; The exhaust groove (405) provided on the embedded insert (400) is used for exhausting air during the wax pressing process of the mold.

2. The welding end parting structure of the supercharger turbine die according to claim 1, characterized in that: The embedded insert (400) comprises a columnar body (401), an annular groove (404) is provided at the lower end of the column (401), and an embedding opening (403) is provided at the center of the annular groove (404).

3. The welding end parting structure of the supercharger turbine die according to claim 2, characterized in that: The embedding opening (403) forms a concave welding end at the top of the wax mold (300) during the wax mold forming process.

4. The welding end parting structure of the supercharger turbine die according to claim 2 or 3, characterized in that: The top of the column (401) is connected to an end plate (402), and in a recessed groove provided on the fixed end insert (600), a pressing plate (500) presses against the end plate (402) to limit the position of the embedded insert (400).

5. The welding end parting structure of the supercharger turbine die according to claim 4, characterized in that: The exhaust groove (405) comprises an annular wedge-shaped opening arranged at the lower end of the side wall of the column (401), and at least one vertical groove arranged vertically and connected to the wedge-shaped opening.

6. The welding end parting structure of the supercharger turbine die according to claim 5, characterized in that: An inclined surface that interfaces with the vertical groove is also provided on the lower end surface of the end plate (402) to further expand the opening area of ​​the exhaust groove (405).

7. The welding end parting structure of the supercharger turbine die according to claim 6, characterized in that: A certain gap is provided between the side wall of the end plate (402) and the fixed end insert (600), and the gap serves as the outlet of the exhaust groove (405) to discharge the gas directly to the outside of the mold.

8. The welding end parting structure of the supercharger turbine die according to claim 1, characterized in that: The wax injection port (700) is located at the lower end of the wax injection cavity, and the embedded insert (400) is located at the upper end of the wax injection cavity, ensuring that the wax liquid is not easy to enter the exhaust groove (405) under the action of gravity.

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