Precious metal forming device

Abstract

The utility model provides a precious metal forming device. The precious metal forming device comprises a closed cavity, a vacuum mechanism and a drainage rod, a first discharge hole is formed in the bottom end of the closed cavity; the closed cavity is connected with the vacuum mechanism in a sealing manner; one end of the drainage rod is arranged at the first discharge port, and the other end of the drainage rod is arranged on the cutting device. According to the precious metal forming device provided by the utility model, oxygen and other gases which are easy to generate oxidation-reduction reaction in the molten precious metal are removed under the vacuum condition, so that the oxidation reaction is avoided, and the influence on the subsequent processing of products is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of metal forming, in particular to a precious metal forming device. Background Art

[0002] For the production and processing of precious metals, the initial processing using the forming device can quickly form the product, which is convenient for the transportation and storage of precious metals.

[0003] Currently, the molding of precious metals is often carried out by placing liquid precious metals into a discharge box, and then relying on gravity to form the precious metals from the discharge port in an open environment.

[0004] However, in an open environment, liquid precious metals are very likely to undergo oxidation reactions with their own oxygen and oxidizing gases in the air under high temperature conditions, while the material cannot be oxidized. The oxygen content and internal pores of the material will affect the subsequent processing of the product, especially semiconductors. Oxidation reactions are not allowed to affect the firmness, stability, and slippage of chip welding. There must be no bubbles or breakage in the process of drawing the microwire. Utility Model Content

[0005] In view of the above problems, the present utility model is proposed to provide a precious metal forming device that overcomes the above problems or at least partially solves the above problems.

[0006] In order to solve the above problems, the utility model discloses a precious metal forming device, including: a closed cavity, a vacuum mechanism and a drainage rod; a first discharge port is provided at the bottom end of the closed cavity; the closed cavity is sealed and connected to the vacuum mechanism; and a drainage rod is provided at the first discharge port.

[0007] Furthermore, the closed cavity includes a first cylinder, a second cylinder, an upper cavity, a lower cavity and a base; the upper cavity is arranged above the lower cavity, and a sealing component is arranged at the contact portion between the lower cavity and the upper cavity, so that the upper cavity and the lower cavity form a closed chamber during operation; a rotating component is arranged at the side end of the upper cavity, and the rotating component is connected to one end of the first cylinder; the first cylinder and the lower cavity are fixed on the base in sequence; the base is provided with a first discharge port; the upper cavity and / or the lower cavity are sealed and connected to the vacuum mechanism.

[0008] Furthermore, the precious metal forming device also includes a second cylinder; the second cylinder is fixed on the base.

[0009] Furthermore, the precious metal forming device also includes a gasket; the gasket is arranged at the bottom end of the upper cavity.

[0010] Furthermore, the gasket is provided with a slot, and the second cylinder is snap-connected to the gasket.

[0011] Furthermore, the vacuum mechanism includes a vacuum chamber and a vacuum unit; the vacuum chamber is sealed and connected to the closed cavity, and the vacuum chamber is sealed and connected to the vacuum unit; the drainage rod passes through the vacuum chamber.

[0012] Furthermore, the precious metal forming device also includes a heating crucible; the heating crucible is arranged in the lower cavity, and a second discharge port is arranged at the bottom; the second discharge port is arranged at the drainage rod.

[0013] Furthermore, a stirring device is provided inside the upper cavity.

[0014] The utility model has the following advantages:

[0015] A closed chamber is set up. After the closed chamber is formed, a vacuum chamber is further formed through the action of a vacuum mechanism, and then the chamber is pulled and formed by a drainage rod. During the vacuum formation process, air is continuously pumped out to reduce the content of gases in the liquid precious metal that are prone to redox reactions, further avoiding oxidation reactions of the precious metal at high temperatures, thereby reducing purity and affecting appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a precious metal forming device of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a closed cavity of an embodiment of a precious metal forming device of the utility model.

[0018] In the figure: 1. closed cavity; 2. vacuum mechanism; 3. drainage rod; 11. upper cavity; 12. lower cavity; 13. heating crucible; 14. stirring device; 15. first cylinder; 16. second cylinder; 17. base; 21. vacuum cavity; 22. vacuum unit. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Example 1

[0021] Reference Figure 1, showing a schematic structural diagram of a precious metal forming device of the utility model, which may specifically include: a closed cavity 1, a vacuum mechanism 2 and a drainage rod 3; a first discharge port is arranged at the bottom end of the closed cavity 1, and it should be noted that the shape of the first discharge port may be, but is not limited to, a rectangle, and may also be a square, etc. Common precious metals such as gold and silver are often in the shape of long strips, so the more preferred first discharge port is a rectangle, and the shape of the first discharge port may be selected according to actual needs.

[0022] Furthermore, the closed cavity 1 is sealed and connected to the vacuum mechanism 2. It should be noted that the closed cavity 1 is sealed and connected to the vacuum mechanism 2. The device is sealed and can be evacuated, which is convenient for the vacuum mechanism 2 to work. The vacuum mechanism 2 allows the closed cavity 1 to form a vacuum environment, which is convenient for the next step of molding.

[0023] Furthermore, one end of the drain rod 3 is arranged at the first discharge port, and the other end is arranged at the cutting device. When the device does not start working, one end of the drain rod 3 is arranged at the first discharge port, and the other end is arranged on the cutting mechanism. After the device starts working, at this time, the closed cavity 1 is a vacuum cavity. When the liquid metal is to be drained to the cutting mechanism, the drain rod 3 is slowly pulled out, and the liquid metal slowly flows out with the drain rod 3, leaving the vacuum environment, solidifying and forming at room temperature, and then cutting according to actual needs. It should be noted that the melting point of the closed cavity 1 needs to be greater than the melting point of the liquid metal. When the molten material is poured into the closed cavity 1, the closed cavity 1 should not undergo any changes. When the melted material is gold or silver, the melting point of silver is 961.93°C and the melting point of gold is 1063°C. Therefore, the material of the closed cavity 1 can be set to 304 stainless steel or 316 stainless steel, and the melting points are 1400°C and 1100°C respectively. If the melting point of the closed cavity 1 is lower than the melting point of the material, a separate container is required to hold the material, and the melting point of the container also needs to be greater than the melting point of the material.

[0024] The closed cavity 1 is connected with the vacuum mechanism 2 to form a vacuum chamber, and the liquid precious metal is drawn and formed by the movement of the drainage rod 3. In this way, the obtained precious metal contains low content of easily oxidizable gas and has good color.

[0025] Example 2

[0026] Reference Figure 1, showing a schematic structural diagram of a precious metal forming device of the utility model, which may specifically include: a closed cavity 1, a vacuum mechanism 2 and a drainage rod 3; a first discharge port is arranged at the bottom end of the closed cavity 1, and it should be noted that the shape of the first discharge port may be, but is not limited to, a rectangle, and may also be a square, etc. Common precious metals such as gold and silver are often in the shape of long strips, so the more preferred first discharge port is a rectangle, and the shape of the first discharge port may be selected according to actual needs.

[0027] Furthermore, the closed cavity 1 is sealed and connected to the vacuum mechanism 2. It should be noted that the closed cavity 1 is sealed and connected to the vacuum mechanism 2. The device is sealed and can be evacuated, which is convenient for the vacuum mechanism 2 to work. The vacuum mechanism 2 allows the closed cavity 1 to form a vacuum environment, which is convenient for the next step of molding.

[0028] Furthermore, one end of the drain rod 3 is arranged at the first discharge port, and the other end is arranged at the cutting device. When the device does not start working, one end of the drain rod 3 is arranged at the first discharge port, and the other end is arranged on the cutting mechanism. After the device starts working, at this time, the closed cavity 1 is a vacuum cavity. When the liquid metal is to be drained to the cutting mechanism, the drain rod 3 is slowly pulled out, and the liquid metal slowly flows out with the drain rod 3, leaving the vacuum environment, solidifying and forming at room temperature, and then cutting according to actual needs. It should be noted that the melting point of the closed cavity 1 needs to be greater than the melting point of the liquid metal. When the molten material is poured into the closed cavity 1, the closed cavity 1 should not undergo any changes. When the melted material is gold or silver, the melting point of silver is 961.93°C and the melting point of gold is 1063°C. Therefore, the material of the closed cavity 1 can be set to 304 stainless steel or 316 stainless steel, and the melting points are 1400°C and 1100°C respectively. If the melting point of the closed cavity 1 is lower than the melting point of the material, a separate container is required to hold the material, and the melting point of the container also needs to be greater than the melting point of the material.

[0029] The closed cavity 1 is connected with the vacuum mechanism 2 to form a vacuum chamber, and the liquid precious metal is drawn and formed by the movement of the drainage rod 3. In this way, the obtained precious metal contains low content of easily oxidizable gas and has good color.

[0030] Further, combined with Figure 2The closed cavity 1 includes a first cylinder 15, a second cylinder 16, an upper cavity 11, a lower cavity 12 and a base 17; the upper cavity 11 is arranged above the lower cavity 12, and a sealing component is arranged at the contact portion between the lower cavity 11 and the upper cavity 12. When working, the upper cavity 11 and the lower cavity 12 form a closed chamber to provide a closed environment for subsequent vacuum. It should be noted that the sealing component here only plays a sealing role, so that the upper cavity 11 and the lower cavity 12 form a closed chamber when they are closed during work. It is more preferred to use a gasket, which can be arranged at the bottom end of the upper cavity 11 or the top end of the lower cavity 12, or both.

[0031] Furthermore, there is a rotating component at the side end of the upper cavity 11, and the rotating component is connected to one end of the first cylinder 15. The rotating component plays the role of rotating the upper cavity 11. It is more preferred to weld a hinge to the upper cavity 11, and the hinge is embedded in the telescopic shaft of the first cylinder 15, of course including but not limited to this scheme; the first cylinder 15 and the lower cavity 12 are fixed on the base 17 in sequence. It should be noted that the telescopic end of the first cylinder 15 is connected to the rotating component, and the other end is connected to the base 17, so the movement of the first cylinder 15 drives the upper cavity 11 to move.

[0032] The base 17 is provided with a first discharge port; the upper cavity 11 and / or the lower cavity 12 is sealed and connected to the vacuum mechanism 2. It should be noted that the upper cavity 11 or the lower cavity 12 is sealed and connected to the vacuum mechanism 2, or the upper cavity 11 and the lower cavity 12 are respectively sealed and connected to the vacuum mechanism 2. All three situations are possible, and it is more preferred that the lower cavity 12 is sealed and connected to the vacuum mechanism 2.

[0033] Furthermore, the precious metal forming device further includes a second cylinder 16; the second cylinder 16 is fixed on the base 17. It should be noted that the second cylinder 16 can further seal the upper cavity 11 and the lower cavity 12. In the initial state, the upper cavity 11 and the lower cavity 12 are not in contact, and the upper cavity 11 is located above the lower cavity 12. In the working state, the first cylinder 15 drives the upper cavity 11 to move downward, so that the upper cavity 11 and the lower cavity 12 form a closed chamber. With the addition of the second cylinder 16, the upper cavity 11 is subjected to a more uniform force, forming a closed chamber with a better sealing effect. Furthermore, the precious metal forming device also includes a gasket; the gasket is arranged at the bottom end of the upper cavity 11; the gasket is provided with a slot, and the second cylinder 16 is snap-connected with the gasket. It should be noted that, similar to the first cylinder 15, the protruding end of the second cylinder 16 is snap-connected with the gasket during operation, and the other end is fixed to the base 17, and the second cylinder 16 and the gasket include but are not limited to snap connections, which can be detachable connections such as bolt connections. The more preferred snap connection is convenient for pushing the upper cavity 11 to rotate when adding materials so that it is not located above the lower cavity 12, and can further form a closed chamber with the upper cavity 11 and the lower cavity 12 during operation.

[0034] Furthermore, the precious metal forming device also includes a heating crucible 13, which can be heated to melt the added solid precious metal into liquid, and further ignite impurities, and can also be purified. The heating crucible 13 is arranged in the lower cavity 12, and a second discharge port is arranged at the bottom. The second discharge port is provided with the drainage rod 3. It should be noted that the heating crucible 13 is arranged at the center of the bottom of the lower cavity 12. It is preferably a cylindrical crucible, similar to a beaker, whose outer diameter is smaller than the inner diameter of the lower cavity 12, and its height is smaller than the height of the lower cavity 12. At the same time, the melting point of the heating crucible 13 must also be greater than the melting point of the precious metal; a second discharge port is arranged at the bottom of the heating crucible 13, which is the same shape as the first discharge port.

[0035] Furthermore, a stirring device 14 is provided inside the upper cavity 11 to continuously stir the precious metal in the liquid state so as to keep it in this state without solidifying. At the same time, the rod of the stirring device 14 is a retractable rod. It should be noted that its maximum length shall not exceed the sum of the depth of the upper cavity 11 and the depth of the lower cavity 12, and the shortest distance shall not be shorter than the depth of the upper cavity 11. If the heating crucible 13 is provided, the shortest distance shall not be shorter than the longest length minus the height of the crucible.

[0036] Example 3

[0037] Furthermore, the vacuum mechanism 2 includes a vacuum chamber 21 and a vacuum unit 22; the vacuum chamber 21 is sealed and connected to the closed cavity 1, and the vacuum chamber 21 is sealed and connected to the vacuum unit 22; it should be noted that the vacuum chamber 21 is arranged at the bottom of the lower cavity 12 and is sealed and connected to the lower cavity; the drain rod 3 passes through the vacuum chamber 21. In the initial state, one end of the drain rod 3 passes through the second discharge port, the first discharge port and the vacuum chamber 21, and the other end is arranged in the cutting device. It should be noted that the vacuum chamber 21 is also provided with a sealing component at the position where the drain rod 3 passes through.

[0038] The working status is summarized as follows: when the device has not started working, one end of the guide rod 3 passes through the second discharge port, the first discharge port and the vacuum chamber 21, and the other end is located in the cutting device, the upper cavity 11 and the lower cavity 12 have not yet been sealed to form a closed chamber, and the second cylinder 16 is snap-connected with the gasket. The upper cavity 11 is rotated so that the upper cavity 11 is not located above the lower cavity 12, and the material is started to be poured into the heating crucible 13. The upper cavity 11 is then rotated so that the second cylinder 16 is snap-connected with the gasket. Then, the upper cavity 11 moves downward under the action of the first cylinder 15 and the second cylinder 16 to form a closed chamber with the lower cavity 12, and the heating crucible 13 continuously heats the material to melt it, and under the action of the stirring device 14, the material is stirred all the time. After it is fully melted, the vacuum unit 22 works to extract the air in the closed chamber and the vacuum cavity 21. Then, the traction device starts to work and slowly pulls the drain rod 3 downward. The melted material in the heating crucible 13 moves with the movement of the drain rod 3. When the melted material reaches the cutting device, the material is instantly solidified and formed at room temperature, and then the size is cut according to actual needs.

[0039] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0040] The above is a detailed introduction to a precious metal forming device provided by the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A precious metal forming device, characterized in that: include: Sealed cavity, vacuum mechanism and drainage rod; The bottom end of the closed cavity is provided with a first discharge port; The sealed cavity is sealed and connected to the vacuum mechanism; One end of the guide rod is arranged at the first discharge port, and the other end is arranged at the cutting device.

2. The precious metal forming device according to claim 1, characterized in that: The enclosed cavity comprises a first cylinder, a second cylinder, an upper cavity, a lower cavity and a base; The upper cavity is arranged above the lower cavity, and a sealing component is arranged at the contact portion between the lower cavity and the upper cavity, so that the upper cavity and the lower cavity form a closed chamber during operation; A rotating component is provided at the side end of the upper cavity, and the rotating component is connected to one end of the first cylinder; The first cylinder and the lower cavity are fixed on the base in sequence; The base is provided with a first discharge port; The upper cavity and / or the lower cavity is sealedly connected to the vacuum mechanism.

3. The precious metal forming device according to claim 2, characterized in that: The precious metal forming device also includes a second cylinder; the second cylinder is fixed on the base.

4. The precious metal forming device according to claim 3, characterized in that: The precious metal forming device also includes a gasket; The gasket is arranged at the bottom end of the upper cavity.

5. The precious metal forming device according to claim 4, characterized in that: The gasket is provided with a slot, and the second cylinder is buckled and connected with the gasket.

6. The precious metal forming device according to claim 1, characterized in that: The vacuum mechanism comprises a vacuum chamber and a vacuum unit; The vacuum chamber is sealed and connected to the closed cavity, and the vacuum chamber is sealed and connected to the vacuum unit; The drainage rod passes through the vacuum chamber.

7. The precious metal forming device according to claim 2, characterized in that: The noble metal forming device also includes a heating crucible; The heating crucible is arranged in the lower cavity, and a second discharge port is arranged at the bottom end; One end of the guide rod is arranged to pass through the first discharge port and the second discharge port, and the other end is arranged on the cutting device.

8. The precious metal forming device according to claim 2, characterized in that: A stirring device is arranged inside the upper cavity.

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