BGA welding powder production equipment

Abstract

The utility model relates to BGA welding powder production equipment, and belongs to the technical field of microsphere production equipment. Comprising a cut-off pipe, a molten raw material storage tank and a dropping pipette, the upper end of the cut-off pipe is connected with the molten raw material storage tank, the lower end of the cut-off pipe is connected with the dropping pipette, the left end of the cut-off pipe is connected with one end of the first constant-pressure pipe, and the other end of the first constant-pressure pipe is connected with the first forming liquid storage tank; the right end of the cut-off pipe is connected with one end of a second constant-pressure pipe, and the other end of the second constant-pressure pipe is connected with a second forming liquid storage tank; a forming tank is arranged below the cut-off pipe; the molten raw material flowing out of the molten raw material storage tank and the forming liquid flowing out of the first constant-pressure pipe and the second constant-pressure pipe converge at the intersection point of the cut-off pipe to obtain the molten raw material liquid section and the forming liquid section, and the molten raw material liquid section and the forming liquid section flow downwards along the liquid dropping pipe at intervals and finally drop into the forming liquid in the forming tank. And under the action of the forming liquid, spherical metal particles are formed, the structure is simple, and manufacturing is convenient.

Description

Technical Field

[0001] This utility model relates to the field of microsphere production equipment technology, and in particular to a BGA solder powder production equipment. Background Technology

[0002] Ball Grid Array (BGA) packaging is a surface mount technology used on integrated circuits. It's commonly used to permanently mount devices such as microprocessors. BGA packaging provides more pins than other packages like Dual In-line Packages (DIP) or Quad Flat Packages (QP). The entire bottom surface of the device can be used as pins, rather than just the perimeter. Compared to perimeter-limited package types, BGA packaging also has a shorter average conductor length, resulting in better high-speed performance. Therefore, BGA packaging technology is increasingly widely used.

[0003] As a key material used in the BGA packaging process, the demand for BGA solder powder is increasing with the widespread application of BGA packaging technology. BGA solder powder particles need to have a spherical structure, and the more regular the spherical structure, the better the performance. Therefore, it is of great significance to efficiently produce BGA solder powder with a relatively regular spherical structure.

[0004] Therefore, it is necessary to provide a BGA solder powder preparation apparatus to improve the automation level of the BGA solder powder preparation process, increase the production efficiency, and at the same time maintain the BGA solder powder with a relatively regular spherical structure. Utility Model Content

[0005] To solve or partially solve the problems existing in related technologies, this utility model provides a BGA solder powder manufacturing device, aiming to provide a new BGA solder powder production equipment.

[0006] The aforementioned BGA solder powder production equipment includes a cross-shaped cut-off tube, a molten raw material storage tank, a dripping tube, a first constant pressure tube, a second constant pressure tube, a forming tank, a first forming liquid storage tank, and a second forming liquid storage tank.

[0007] The upper end of the cut-off tube is connected to a molten raw material storage tank, the lower end is connected to a dripping tube, the left end is connected to one end of a first constant pressure tube, and the other end of the first constant pressure tube is connected to a first forming liquid storage tank; the right end of the cut-off tube is connected to one end of a second constant pressure tube, and the other end of the second constant pressure tube is connected to a second forming liquid storage tank; a forming tank is provided below the cut-off tube, the forming tank contains forming liquid, and the lower end of the dripping tube is inserted into the forming liquid;

[0008] Wherein, the internal pressure of the first constant pressure tube is equal to the internal pressure of the second constant pressure tube, and the supply pressure of the molten raw material storage tank is less than the internal pressure of the first constant pressure tube or / and the second constant pressure tube.

[0009] In some embodiments, the upper end of the cut-off tube has a diameter of 32G-10G; the lower end of the cut-off tube has the same diameter as the drip tube, which is 32G-10G; and the left end of the cut-off tube has the same diameter as its right end, both being 32G-10G.

[0010] In some embodiments, the supply pressure of the first constant pressure tube and / or the second constant pressure tube is 0.1-0.5 MPa.

[0011] In some embodiments, the supply pressure of the molten raw material storage tank is 0.1-0.5 MPa.

[0012] In some embodiments, the upper ends of the molten raw material storage tank, the first forming liquid storage tank, and the second forming liquid storage tank are respectively connected to a nitrogen cylinder via pipes, and each of the connecting pipes is equipped with a pressure regulating valve.

[0013] The technical solution provided by this utility model can include the following beneficial effects:

[0014] This application obtains a molten raw material section and a forming liquid section by converging the molten raw material flowing out of the molten raw material storage tank and the forming liquid flowing out of the first constant pressure pipe and the second constant pressure pipe at the intersection of the cut-off pipe. The molten raw material liquid section and the forming liquid section flow down along the dripping pipe at intervals and finally drip into the forming liquid in the forming tank. Under the action of the forming liquid, spherical metal particles are formed. The structure is simple and easy to manufacture.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0016] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0017] Figure 1 This is a schematic diagram of the structure of the welding powder production equipment shown in an embodiment of the present utility model;

[0018] Figure 2 This is another structural schematic diagram of the welding powder production equipment shown in this embodiment of the utility model;

[0019] Figure label:

[0020] 1. Cut-off tube; 2. Molten raw material storage tank; 3. Dropping tube; 4. First constant pressure tube; 5. Second constant pressure tube; 6. Forming tank; 7. First forming liquid storage tank; 8. Second forming liquid storage tank; 9. Nitrogen cylinder; 10. Pressure regulating valve. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to the content described.

[0022] Please see Figure 1 This application provides a BGA solder powder production equipment, including a cross-shaped cut-off tube 1, a molten raw material storage tank 2, a dripping tube 3, a first constant pressure tube 4, a second constant pressure tube 5, a forming tank 6, a first forming liquid storage tank 7, and a second forming liquid storage tank 8.

[0023] The upper end of the cut-off tube 1 is connected to the bottom of the molten raw material storage tank 2, the lower end is connected to the dripping tube 3, the left end is connected to one end of the first constant pressure tube 4, and the other end of the first constant pressure tube 4 is connected to the first forming liquid storage tank 7; the right end of the cut-off tube 1 is connected to one end of the second constant pressure tube 5, and the other end of the second constant pressure tube 5 is connected to the second forming liquid storage tank 8; a forming tank 6 is provided below the cut-off tube 1, the forming tank 6 contains forming liquid, and the lower end of the dripping tube 3 is inserted into the forming liquid; wherein, the internal pressure of the first constant pressure tube 4 is equal to the internal pressure of the second constant pressure tube 5, and the supply pressure of the molten raw material storage tank 2 is less than the internal pressure of the first constant pressure tube 4 or / and the second constant pressure tube 5.

[0024] When preparing welding powder, the molten raw material storage tank 2 contains molten raw materials (usually molten iron), and the forming tank 6, the first forming liquid storage tank 7 and the second forming liquid storage tank 8 all contain forming liquid. The forming liquid is made of glycerol, polyalphaolefin base oil (PAO20), white oil (N500), etc.

[0025] The molten raw material flowing from the molten raw material storage tank 2 and the forming liquid flowing from the first constant pressure pipe 4 and the second constant pressure pipe 5 converge at the intersection of the cut-off pipe 1. Since the internal pressure of the dripping pipe 3 is the lowest, the molten raw material and the forming liquid eventually flow downward from the dripping pipe 3. At the intersection of the cut-off pipe 1, the forming liquid supplied by the first constant pressure pipe 4 and the second constant pressure pipe 5 cuts the molten raw material flow supplied by the molten raw material storage tank 2 into individual liquid segments. Subsequently, these liquid segments and the forming liquid flow downward along the dripping pipe 3 at intervals, and finally drip into the forming liquid in the forming tank 6. Under the action of the forming liquid, spherical metal particles, namely BGA solder powder, are formed.

[0026] In this application, the dripping speed of the dripping tube 3 (the production speed of the metal solder powder) is related to the supply pressure of the molten raw material storage tank 2. The higher the supply pressure of the molten raw material storage tank 2, the faster the dripping speed of the dripping tube 3. That is, by adjusting the supply pressure of the molten raw material storage tank 2, the production speed of metal particles can be adjusted, which is convenient and enables rapid production of metal solder powder. The size of the dripping droplets of the dripping tube 3 (the size of the produced metal solder powder particles) is related to the pressure difference between the supply pressure of the molten raw material storage tank 2 and the pressure in the constant pressure tube. The greater the pressure difference between the supply pressure of the molten raw material storage tank 2 and the pressure in the constant pressure tube, the larger the diameter of the prepared metal solder powder particles.

[0027] In this embodiment, the upper diameter of the cut-off tube 1 is 32G-10G; the lower diameter of the cut-off tube 1 is the same as that of the dripping tube 3, which is 32G-10G.

[0028] In this embodiment, the diameter of the left end of the cut-off tube 1 is the same as the diameter of its right end, both being 32G-10G.

[0029] In this embodiment, the supply pressure of the first constant pressure tube 4 and / or the second constant pressure tube 5 is 0.1-0.5 MPa.

[0030] In this embodiment, the supply pressure of the molten raw material storage tank 2 is 0.1-0.5 MPa.

[0031] In some specific implementations, such as Figure 2 As shown, the upper ends of the molten raw material storage tank 2, the first forming liquid storage tank 7, and the second forming liquid storage tank 8 are respectively connected to the nitrogen cylinder 9 via pipes, and each connecting pipe is equipped with a pressure regulating valve 10. Thus, during the preparation of welding powder, nitrogen is introduced into the molten raw material storage tank 2 to increase its supply pressure, thereby accelerating the preparation speed of the welding powder. Simultaneously, by introducing nitrogen into the molten raw material storage tank 2, the first forming liquid storage tank 7, and the second forming liquid storage tank 8, the pressure inside each tank is increased. This ensures that changes in supply pressure caused by the reduction of material within the tank do not affect the overall stability of the device's operation, thus ensuring the smooth preparation of the welding powder. Furthermore, the supply pressure of each storage tank can be adjusted via the pressure regulating valve 10, thereby adjusting the pressure difference between the supply pressure of the molten raw material storage tank 2 and the pressure inside the constant pressure pipe, thereby achieving the purpose of adjusting the particle diameter of the prepared welding powder.

[0032] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A BGA solder powder production apparatus, characterized by: The application relates to a BGA solder powder production device, which comprises a cross-shaped truncated pipe (1), a molten raw material storage tank (2), a drop pipe (3), a first constant-pressure pipe (4), a second constant-pressure pipe (5), a forming tank (6), a first forming liquid storage tank (7) and a second forming liquid storage tank (8). The upper end of the truncated pipe (1) is connected with the molten raw material storage tank (2), the lower end is connected with the drop pipe (3), the left end is connected with one end of the first constant-pressure pipe (4), the other end of the first constant-pressure pipe (4) is connected with the first forming liquid storage tank (7), the right end of the truncated pipe (1) is connected with one end of the second constant-pressure pipe (5), the other end of the second constant-pressure pipe (5) is connected with the second forming liquid storage tank (8), and the forming tank (6) is arranged below the truncated pipe (1) and is filled with forming liquid, and the lower end of the drop pipe (3) is inserted into the forming liquid. The internal pressure of the first constant-pressure pipe (4) is equal to the internal pressure of the second constant-pressure pipe (5), and the supply pressure of the molten raw material storage tank (2) is smaller than the internal pressure of the first constant-pressure pipe (4) and / or the second constant-pressure pipe (5).

2. The BGA solder powder production device according to claim 1, wherein the upper end of the truncated pipe (1) has a pipe diameter of 32G-10G, the lower end of the truncated pipe (1) has the same pipe diameter as the drop pipe (3), and the left end of the truncated pipe (1) has the same pipe diameter as the right end, both being 32G-10G.

3. The BGA solder powder production device according to claim 1, wherein the supply pressure of the first constant-pressure pipe (4) and / or the second constant-pressure pipe (5) is 0.1-0.5 MP.

4. The BGA solder powder production device according to claim 1, wherein the supply pressure of the molten raw material storage tank (2) is 0.1-0.5 MP.

5. The BGA solder powder production device according to claim 1, wherein the upper ends of the molten raw material storage tank (2), the first forming liquid storage tank (7) and the second forming liquid storage tank (8) are respectively connected with a nitrogen cylinder (9) through pipelines, and a pressure regulating valve (10) is arranged on each pipeline. ​ ​ ​ ​

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