An outer lining plate for facilitating the fixing of a lost-wax process casting mold

Abstract

The utility model relates to the field of lost wax method casting mould technique, concretely is a kind of outer lining of lost wax method casting mould convenient to fix peeling, including inner mould, the outer wall of inner mould is provided with three outer moulds, three the outer moulds are mutually adhered by rubber, the outer wall of outer mould is provided with fixing device, the fixing device includes C-shaped ring, the C-shaped ring is arranged in the outer wall of outer mould bottom end, the top of C-shaped ring is fixedly installed with fixed block, the inner wall of fixed block is penetrated and rotatably installed with rotating rod one, the utility model is closed by the mechanical setting of fixed lining, completely replace traditional binding rope, avoid the risk that binding rope is loose or slips under high temperature or vibration, ensure casting mould geometry precision, reduce casting defect, and then replace artificial peeling by "petal blooming type" mechanical opening and closing cooperation with inserting rod, eliminate rubber rebound resistance, single person can complete operation, peeling efficiency is greatly improved, and artificial cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of lost-wax casting mold technology, specifically to an outer liner plate that facilitates the fixing and peeling of lost-wax casting molds. Background Technology

[0002] Lost-wax casting technology is widely used in precision casting, especially in aerospace, medical device, and art manufacturing, for producing metal parts with complex structures and high surface finishes. The core steps of this process include: first, creating a wax model and encasing it in a high-temperature resistant rubber material to form a mold; then, obtaining a cavity by melting the wax model; and finally, pouring molten metal to form the mold. During this process, an outer liner plate serves as a crucial component for fixing the outer mold, ensuring its stability during the dewaxing and pouring stages.

[0003] In existing technologies, the fixation of the outer liner plate mostly relies on traditional binding methods. Specifically, operators need to wrap ropes or straps around the outer liner plate (usually made of rubber to provide elastic support) to tightly secure the outer mold. Because the outer mold is prone to deformation under high temperature or vibration environments, the binding ropes are easily loosened or slipped, causing the outer liner plate to shift. Furthermore, during the demolding stage, two workers are required to work together to peel the rubber outer mold outwards. However, the rubber material of the outer mold has high resilience, generating a strong rebound force during peeling, making the operation laborious and inefficient. Therefore, we propose an outer liner plate that facilitates the fixation of the lost-wax casting mold. Utility Model Content

[0004] The purpose of this invention is to solve the problems of unstable fixing of the binding rope and inconvenient, time-consuming and labor-intensive peeling operation, and to provide an outer liner plate that is easy to fix and peel out the lost wax casting mold.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An outer liner plate for facilitating the fixing of a lost-wax casting mold includes an inner mold. Three outer molds are mounted on the outer wall of the inner mold and are bonded together with rubber. A fixing device is provided on the outer wall of each outer mold. The fixing device includes a C-ring, which is located on the outer wall at the bottom of the outer mold. A fixing block is fixedly mounted on the top of the C-ring. A rotating rod is rotatably mounted through the inner wall of the fixing block. The protruding end of the rotating rod has an upper conical tooth. A fixing liner plate is fixedly mounted on the outer wall of the rotating rod. A rotating ring is rotatably mounted on the inner wall of the C-ring. A second rotating rod is rotatably mounted through the top of the C-ring near the top of the upper conical tooth. The top of the second rotating rod has a lower conical tooth. A toothed block is provided on the outer wall at the bottom of the second rotating rod. Engaging teeth are provided on the rotating ring near the inner wall of the outer mold. A push plate is fixedly mounted on the outer wall of the rotating ring.

[0007] Preferably, there are three fixed liner plates, and the top of the three fixed liner plates and the three outer molds are respectively provided with slot one and slot two. The inner walls of slot one of the three fixed liner plates and slot two of the three outer molds are provided with insert rods, and the number of insert rods is three.

[0008] Preferably, there are three of each of the first and second rotating rods, and the upper conical tooth end of the first rotating rod meshes with the lower conical tooth end of the second rotating rod, and the tooth block meshes with the meshing tooth.

[0009] Preferably, the three fixed liner plates are installed in a one-to-one correspondence with the three outer molds.

[0010] Preferably, the first slot near the fixed liner is a short rod, and the second slot near the outer mold is a long rod.

[0011] By employing the above technical solution, this utility model provides an outer liner plate that facilitates the fixing and peeling of lost-wax casting molds. The beneficial effects are as follows: This utility model, through the mechanical closing mechanism of the fixing liner plate, completely replaces the traditional binding rope, avoiding the risk of the binding rope loosening or slipping under high temperature or vibration, ensuring the geometric accuracy of the casting mold, reducing casting defects, and further eliminating rubber rebound resistance by using a "petal-like" mechanical opening and closing mechanism with a plug instead of manual peeling. This allows for operation by a single person, significantly improving peeling efficiency and reducing labor costs. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0013] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a bottom view of the overall structure of this utility model;

[0015] Figure 3 This is a cross-sectional schematic diagram of the fixing device in Embodiment 1;

[0016] Figure 4 This is an enlarged schematic diagram of point A in this embodiment.

[0017] In the diagram: 1. Inner mold; 11. Outer mold; 2. Fixing device; 21. C-ring; 22. Fixing block; 230. Rotating rod one; 231. Upper conical tooth; 24. Fixing liner; 25. Rotating ring; 260. Rotating rod two; 261. Lower conical tooth; 262. Tooth block; 27. Meshing tooth; 28. Push plate; 29. ​​Insert rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1

[0020] An outer liner plate for easy fixing of lost-wax casting molds, such as Figures 1-4 As shown, the device includes an inner mold 1, and three outer molds 11 are provided on the outer wall of the inner mold 1. The three outer molds 11 are bonded together by rubber. A fixing device 2 is provided on the outer wall of the outer molds 11. The fixing device 2 includes a C-shaped ring 21, which is provided on the outer wall of the bottom end of the outer molds 11. A fixing block 22 is fixedly installed on the top of the C-shaped ring 21. A rotating rod 230 is rotatably installed through the inner wall of the fixing block 22. The protruding end of the rotating rod 230 is an upper conical tooth 23. 1. A fixed liner 24 is fixedly installed on the outer wall of the rotating rod 230. A rotating ring 25 is rotatably installed on the inner wall of the C-shaped ring 21. A rotating rod 260 is rotatably installed near the top of the upper conical tooth 231 of the C-shaped ring 21. The top of the rotating rod 260 is provided with a lower conical tooth 261. A tooth block 262 is provided on the outer wall of the bottom end of the rotating rod 260. A meshing tooth 27 is provided near the inner wall of the outer mold 11 of the rotating ring 25. A push plate 28 is fixedly installed on the outer wall of the rotating ring 25.

[0021] There are three fixed liner plates 24, and the top of the three fixed liner plates 24 and the three outer molds 11 are respectively provided with slot 1 and slot 2. The inner walls of slot 1 of the three fixed liner plates 24 and slot 2 of the three outer molds 11 are provided with insert rods 29, and there are three insert rods 29.

[0022] There are three of each of the rotating rod 1 230 and rotating rod 260. The upper conical tooth 231 end of rotating rod 1 230 meshes with the lower conical tooth 261 end of rotating rod 260, and the tooth block 262 meshes with the meshing tooth 27.

[0023] The three fixed liner plates 24 are installed in a one-to-one correspondence with the three outer molds 11.

[0024] The first slot of the insert rod 29 near the fixed liner plate 24 is a short rod, and the second slot of the insert rod 29 near the outer mold 11 is a long rod.

[0025] This utility model provides an outer liner plate for easy fixing of lost-wax casting molds. In use, a wax model is first made and wrapped with high-temperature resistant rubber material to form a mold. Then, the cavity is obtained by melting the wax model, and finally, molten metal is poured in to form the mold. In existing technologies, fixing the outer mold 11 requires wrapping ropes or straps around the outside of the liner plate to secure it. Because the outer mold is prone to deformation under high-temperature molding or vibration environments, the straps can easily loosen or slip, causing the liner plate to shift. To solve this problem, the outer mold 11 and the inner mold 1 are placed inside the inner wall of the fixing liner plate 24 and the C-shaped ring 21. After the three outer molds 11 correspond to the three fixing liner plates 24 respectively, the push plate 28 is rotated, and the push plate 28... The rotating ring 25 rotates on the inner wall of the C-shaped ring 21. The rotating ring 25 drives the meshing teeth 27 to rotate. The meshing teeth 27 mesh with the tooth block 262 set at the bottom of the rotating rod 260, causing the rotating rod 260 to rotate. The lower conical tooth 261 at the top of the rotating rod 260 meshes with the upper conical tooth 231 on the rotating rod 230. This causes the rotating rod 230 to drive the fixed liner 24 to rotate clockwise. The fixed liner 24 moves inward to fit the outer wall of the outer mold 11 and then stops, thereby fixing the outer mold 11. Through the mechanical closing setting of the fixed liner 24, the traditional binding rope is completely replaced, avoiding the risk of the binding rope loosening or slipping under high temperature or vibration, ensuring the geometric accuracy of the mold, and reducing casting defects.

[0026] After the inner mold 1 is heated and formed, it needs to be peeled off from the outer mold 11. In the existing technology, two or more people are required to peel off the three outer molds 11 together, which is time-consuming and labor-intensive. Therefore, in order to solve this problem, the insert rod 29 is inserted into the inner wall of the slot one of the three fixed liner plates 24 and the slot two of the three outer molds 11 respectively. Then, by reversing the above steps, the fixed liner plates 24 open and close outward. The slot one on the fixed liner plate 24 will drive the insert rod 29 to open and close outward. The insert rod 29 drives the outer mold 11 to separate outward. The opening and closing of the fixed liner plates 24 is similar to the blooming of petals, which opens and closes the inner "flower core", that is, the outer mold 11. By using the "petal blooming" mechanical opening and closing in conjunction with the insert rod 29 to replace manual peeling, the rubber rebound resistance is eliminated, and a single person can complete the operation. The peeling efficiency is greatly improved and the labor cost is reduced.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An outer liner plate for easy fixing of a lost-wax casting mold, comprising an inner mold (1), wherein the outer wall of the inner mold (1) is provided with three outer molds (11), the three outer molds (11) being bonded together by rubber, characterized in that: The outer wall of the outer mold (11) is provided with a fixing device (2), the fixing device (2) includes a C-shaped ring (21), the C-shaped ring (21) is provided on the outer wall of the bottom end of the outer mold (11), a fixing block (22) is fixedly installed on the top of the C-shaped ring (21), a rotating rod (230) is rotatably installed through the inner wall of the fixing block (22), the protruding end of the rotating rod (230) is provided with an upper conical tooth (231), and a fixing liner (2) is fixedly installed on the outer wall of the rotating rod (230). 4) A rotating ring (25) is rotatably installed on the inner wall of the C-shaped ring (21). A rotating rod (260) is rotatably installed through the top of the upper conical tooth (231) of the C-shaped ring (21). The top of the rotating rod (260) is provided with a lower conical tooth (261). A tooth block (262) is provided on the outer wall of the bottom end of the rotating rod (260). A meshing tooth (27) is provided on the inner wall of the rotating ring (25) near the outer mold (11). A push plate (28) is fixedly installed on the outer wall of the rotating ring (25).

2. The outer liner plate for facilitating the fixing of lost-wax casting molds according to claim 1, characterized in that: The number of fixed liner plates (24) is three, and the top of the three fixed liner plates (24) and the three outer molds (11) are respectively provided with slot one and slot two. The inner walls of slot one of the three fixed liner plates (24) and slot two of the three outer molds (11) are provided with insert rods (29), and the number of insert rods (29) is three.

3. The outer liner plate for facilitating the fixing of lost-wax casting molds according to claim 2, characterized in that: There are three of each of the first rotating rod (230) and the second rotating rod (260), and the upper conical tooth (231) end of the first rotating rod (230) meshes with the lower conical tooth (261) end of the second rotating rod (260), and the tooth block (262) meshes with the meshing tooth (27).

4. The outer liner plate for facilitating the fixing of lost-wax casting molds according to claim 3, characterized in that: The three fixed liner plates (24) are installed in a one-to-one correspondence with the three outer molds (11).

5. The outer liner plate for facilitating the fixing of lost-wax casting molds according to claim 4, characterized in that: The insertion rod (29) is configured as a short rod in slot one near the fixed liner (24), and as a long rod in slot two near the outer mold (11).

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