Mould reversing device for gold and silver ware

Abstract

The utility model discloses a gold and silver ware mold reversing device, which relates to the field of gold processing, and mainly structurally comprises a box body, the box body comprises an upper cavity and a lower cavity, a shaft driving component is fixedly arranged at the bottom of the lower cavity, a vacuum pump set is fixedly arranged on one side of the shaft driving component, and a vacuum pump is fixedly arranged on the other side of the shaft driving component. A telescopic power assembly is fixedly arranged on the upper portion of the lower cavity, a telescopic driving rod is fixedly arranged on the inner wall of the upper cavity, one end of the telescopic driving rod is fixedly connected with a vacuum half cavity, one end of a shaft driving assembly is in shaft connection with a centrifugal reverse mold cavity, and a vacuum pipe is fixedly connected to the upper portion of the vacuum half cavity. The gold gypsum model is subjected to centrifugal treatment in a vacuum state, air in the model is exhausted, the gypsum model is completely filled with gold and silver molten liquid, the reverse mold yield of gold ornaments is increased, and the method is suitable for the conditions that the number of machined ornaments is small and the requirement for the yield is high in a small ornament store.

Description

Technical Field

[0001] The utility model relates to the field of gold processing, in particular to a gold and silverware casting mold device. Background Art

[0002] Lost wax casting technology is the most commonly used processing method in metal processing, especially in the gold and silver jewelry industry. It usually goes through wax modeling, plaster overmolding, lost wax casting, and finishing. For some simple gold jewelry, qualified products can be processed through the above processes.

[0003] For the processing of gold and silver jewelry with complex shapes and high requirements for fine details, the conventional lost wax method will affect the fluidity of the gold and silver solution in the model due to air resistance and uneven heat conduction of the gypsum mold, which will lead to bubbles and defects in the gold and silver molds, seriously affecting the yield rate of gold jewelry. For the above situation, the gypsum model is usually centrifuged by a centrifuge on the basis of the paraffin method to eliminate the air resistance of the gold and silver melt in the complex structure gypsum model and improve the yield rate of the mold of gold and silver jewelry. Generally, due to the constraints of customer sources, funds and technology, the gold and silver jewelry sold by small jewelry stores are not suitable for mass production, but are mainly customized by customers, pursuing the "exclusiveness" of single jewelry. The yield rate of such "exclusive" gold and silver jewelry directly affects the operating costs of jewelry stores. How to improve the yield rate of gold and silver jewelry has become the main problem that small jewelry stores have to face in controlling operating costs.

[0004] Usually, due to the constraints of production costs and other factors, small jewelry stores use gold and silver casting devices with relatively simple structures. In addition, during the centrifugal process, some of the molten gold and silver in the plaster model will spill due to the centrifugal effect. The gold and silver casting devices usually equipped with centrifugal equipment do not have a device to collect the spilled gold and silver molten liquid. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the above shortcomings and provide a gold and silver article mold-turning device to improve the finished product effect and finished product rate in the gold and silver article processing process and reduce economic losses.

[0006] 1. Technical solution

[0007] The purpose of the utility model is to provide a gold and silver article molding device, comprising a box body, the box body comprising an upper cavity and a lower cavity, an axis driving assembly is fixedly arranged at the bottom of the lower cavity, a vacuum pump group is fixedly arranged on one side of the axis driving assembly, a telescopic power assembly is fixedly arranged on the upper part of the lower cavity, a telescopic driving rod is fixedly arranged on the inner wall of the upper cavity, one end of the telescopic driving rod is fixedly connected to a vacuum half cavity, one end of the axis driving assembly is axially connected to a centrifugal molding cavity, and the centrifugal molding cavity is located at the bottom center of the upper cavity.

[0008] Preferably, a guide rail is fixedly arranged on the inner wall of the upper cavity, a guide groove is opened on one side of the guide rail, and the guide rail is symmetrically arranged on the inner wall of the upper cavity.

[0009] Preferably, guide blocks are fixedly arranged on both sides of the bottom of the vacuum half-cavity, and the guide blocks are symmetrically arranged on both sides of the vacuum half-cavity.

[0010] Preferably, one end of the guide block is inserted deep into the guide groove.

[0011] Preferably, a vacuum tube is fixedly connected to the upper portion of the vacuum half-cavity, the other end of the vacuum tube is fixedly connected to a vacuum pump assembly, and a vacuum sealing pad is fixedly provided on the cavity side of the vacuum half-cavity.

[0012] Preferably, the vacuum half-cavity is symmetrically arranged in the upper cavity, the telescopic driving rod is symmetrically arranged in the upper cavity, and the telescopic power assembly is symmetrically arranged in the lower cavity.

[0013] 2. Beneficial effects:

[0014] Compared with the prior art, the utility model provides a gold and silverware casting device, which has the following beneficial effects:

[0015] 1. A gold and silver casting device is based on the original lost wax casting method, and is equipped with a centrifugal component and a vacuum extraction component. Through the centrifugal treatment of the plaster mold, the gold and silver melts are more easily and quickly filled in the plaster mold. The vacuum extraction component can quickly extract the air in the plaster mold to reduce the flow resistance of the gold solution in the plaster mold. The two components work together to significantly improve the yield of gold and silver castings, and are particularly suitable for small jewelry stores that customize small batches.

[0016] 2. A vacuum extraction component - a vacuum semi-cavity - provided in a gold and silver casting device not only provides a vacuum environment for the plaster model, but also serves as a collection component for the gold and silver melt overflowing when the plaster mold is centrifuged, thereby facilitating the collection of the gold and silver melt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the vacuum half-cavity structure of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Box body; 2. Telescopic drive rod; 3. Vacuum pump group; 4. Shaft drive assembly; 5. Telescopic power assembly; 6. Centrifugal mold cavity; 7. Vacuum half cavity; 8. Vacuum tube; 9. Guide rail; 10. Guide block; 11. Vacuum sealing pad; 12. Upper cavity; 13. Lower cavity; 14. Guide groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] See also Figure 1-Figure 3 A gold and silver molding device comprises a box body 1, wherein the box body 1 comprises an upper cavity 12 and a lower cavity 13, an axis driving assembly 4 is fixedly arranged at the bottom of the lower cavity 13, a vacuum pump group 3 is fixedly arranged on one side of the axis driving assembly 4, a telescopic power assembly 5 is fixedly arranged on the upper part of the lower cavity 13, a telescopic driving rod 2 is fixedly arranged on the inner wall of the upper cavity 12, one end of the telescopic driving rod 2 is fixedly connected to a vacuum half cavity 7, one end of the axis driving assembly 4 is axially connected to a centrifugal molding cavity 6, and the centrifugal molding cavity 6 is located at the bottom center of the upper cavity 12.

[0025] A guide rail 9 is fixedly arranged on the inner wall of the upper cavity 12 , a guide groove 14 is opened on one side of the guide rail 9 , and the guide rail 9 is symmetrically arranged on the inner wall of the upper cavity 12 .

[0026] Guide blocks 10 are fixedly arranged on both sides of the bottom of the vacuum half-cavity 7 , and the guide blocks 10 are symmetrically arranged on both sides of the vacuum half-cavity 7 .

[0027] One end of the guide block 10 is inserted into the guide groove 14 .

[0028] A vacuum tube 8 is fixedly connected to the upper portion of the vacuum half-cavity 7 , and the other end of the vacuum tube 8 is fixedly connected to the vacuum pump group 3 . A vacuum sealing pad 11 is fixedly provided on the cavity side of the vacuum half-cavity 7 .

[0029] The vacuum half cavity 7 is symmetrically arranged in the upper cavity 12 , the telescopic driving rod 2 is symmetrically arranged in the upper cavity 12 , and the telescopic power assembly 5 is symmetrically arranged in the lower cavity 13 .

[0030] Embodiment 2:

[0031] On the basis of Example 1, a gold and silver article molding device specifically works as follows: a gypsum mold to be poured with molten gold and silver is placed in a centrifugal molding cavity 6 for fixing, the molten gold and silver is poured into the gypsum mold, a gold and silver article molding device is started, and the telescopic drive rod 2, driven by the telescopic power assembly 5, pushes the two vacuum half-cavities 7 to complete the closing and sealing of the centrifugal molding cavity 6. During this process, the guide block 10 located in the guide groove 14 plays a guiding and positioning role, so that the two vacuum half-cavities 7 can be completely matched, and the two vacuum half-cavities 7 are sealed by a vacuum sealing gasket 11 to prevent external air from entering the two vacuum half-cavities 7.

[0032] At this time, the vacuum pump group 3 starts and quickly extracts the air in the two vacuum half-cavities 7 through the vacuum tube 8. When the vacuum value in the two vacuum half-cavities 7 reaches the preset value, the vacuum pump station stops working and the two vacuum half-cavities 7 remain in a vacuum state.

[0033] The shaft drive assembly 4 starts to operate, and the centrifugal mold cavity 6 rotates rapidly under the drive of the shaft drive assembly 4. Under the action of centrifugal force, the molten gold and silver inside the gypsum mold is completely filled in the cavity inside the gypsum mold.

[0034] The shaft driving assembly 4 stops running, and the two vacuum half-cavities 7 continue to maintain a vacuum state for a period of time, and then the vacuum pump group 3 is started again to slowly release air into the two vacuum half-cavities 7 until the pressure inside and outside the two vacuum half-cavities 7 is the same.

[0035] During this process, the centrifugal force generated by the rapid rotation of the centrifugal molding cavity 6 driven by the shaft drive assembly 4 will cause the molten gold and silver in the plaster mold to overflow. The two vacuum semi-cavities 7 provide a relatively small space for it, preventing the overflowed molten gold and silver from splashing everywhere in the upper cavity 12 of the device, thereby improving the collection efficiency of the overflowed molten gold and silver.

[0036] The telescopic power assembly 5 is started, and the telescopic driving rod 2 is driven by the telescopic power assembly 5 to separate the two vacuum half-cavities 7, and the gypsum mold can be taken out from the centrifugal mold cavity 6.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0038] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A gold and silverware casting device, comprising a box (1), characterized in that: The box body (1) comprises an upper cavity (12) and a lower cavity (13); an axial drive assembly (4) is fixedly arranged at the bottom of the lower cavity (13); a vacuum pump group (3) is fixedly arranged on one side of the axial drive assembly (4); a telescopic power assembly (5) is fixedly arranged on the upper part of the lower cavity (13); a telescopic drive rod (2) is fixedly arranged on the inner wall of the upper cavity (12); one end of the telescopic drive rod (2) is fixedly connected to a vacuum half cavity (7); one end of the axial drive assembly (4) is axially connected to a centrifugal mold cavity (6); and the centrifugal mold cavity (6) is located at the bottom center of the upper cavity (12).

2. A gold and silverware casting device according to claim 1, characterized in that: A guide rail (9) is fixedly arranged on the inner wall of the upper cavity (12), a guide groove (14) is opened on one side of the guide rail (9), and the guide rail (9) is symmetrically arranged on the inner wall of the upper cavity (12).

3. A gold and silverware casting device according to claim 1, characterized in that: Guide blocks (10) are fixedly arranged on both sides of the bottom of the vacuum half-cavity (7), and the guide blocks (10) are symmetrically arranged on both sides of the vacuum half-cavity (7).

4. A gold and silverware casting device according to claim 3, characterized in that: One end of the guide block (10) is inserted deeply into the guide groove (14).

5. The gold and silverware casting device according to claim 1, characterized in that: A vacuum tube (8) is fixedly connected to the upper part of the vacuum half-cavity (7), the other end of the vacuum tube (8) is fixedly connected to the vacuum pump group (3), and a vacuum sealing pad (11) is fixedly arranged on the cavity side of the vacuum half-cavity (7).

6. The gold and silverware casting device according to claim 1, characterized in that: The vacuum half cavity (7) is symmetrically arranged in the upper cavity (12), the telescopic drive rod (2) is symmetrically arranged in the upper cavity (12), and the telescopic power assembly (5) is symmetrically arranged in the lower cavity (13).

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