Soldering paste stirring device with solder ball protection structure

Abstract

The invention discloses a soldering paste stirring device with a solder ball protection structure, and relates to the technical field of soldering paste preparation.The soldering paste stirring device comprises a base, an adjusting piece is arranged at the upper end of the base, a supporting plate is arranged at the upper end of the adjusting piece, meanwhile, a clamping block is arranged at the upper end of the base and located on one side of the adjusting piece, and a stirring barrel is arranged on the inner wall of the clamping block; a driving part is arranged at the lower end of the supporting plate away from one side of the adjusting part; according to the soldering paste stirring device with the solder ball protection structure, the position of a positioning rod arranged on the outer surface of an adjusting block is adjusted by moving the position of the adjusting block, and due to the fact that the end of the positioning rod is rotationally connected with the outer surface of the adjusting block, when the adjusting block moves upwards, the positioning rod is synchronously driven to expand outwards; and then the adjusting rod is pushed to rotate around the joint of the adjusting rod and the movable ring, so that the arc-shaped plate rotationally mounted on the adjusting rod is tightly attached to the inner wall of the stirring barrel, and soldering paste adhered to the inner wall of the stirring barrel is conveniently cleaned.

Description

Technical Field

[0001] The invention relates to a solder paste preparation technology, and in particular to a solder paste stirring device with a solder ball protection structure. Background Art

[0002] Solder paste, also known as tin paste, is a new type of welding material that came into being with SMT. Its main body is gray and is a paste-like mixture formed by mixing solder powder, flux and other surfactants, thixotropic agents, etc. It is mainly used for welding electronic components such as resistors, capacitors, and ICs on the surface of PCBs in the SMT industry. Solder paste has a certain viscosity at room temperature and can initially stick electronic components to a given position. At the welding temperature, as the solvent and some additives evaporate, the components to be welded are welded to the printed circuit pads to form a permanent connection. When using solder paste in the laboratory, it is often necessary to stir the solder paste so that the various materials in the solder paste are evenly mixed to ensure the welding quality of the components.

[0003] A Chinese invention patent with publication number CN112791636A discloses a solder paste stirring device with a tin ball protection structure. The solder paste stirring device with a tin ball protection structure is provided with a motor. The motor drives the inner shell to rotate through a transmission shaft, so that the device can centrifugally stir the internal solder paste, thereby solving the problem that the existing stirring device needs to stir through a stirring shaft, which easily causes the tin balls inside the solder to be damaged and form tin blocks, causing subsequent printing blockage. The heating wire can generate heat after being energized, so that the solder will not solidify due to too low a temperature, resulting in the inability to stir, thereby improving the functionality of the device. The solder paste stirring device with a tin ball protection structure has a shielding mechanism, and the baffle shields the bottom plate, so that the connecting block and the mounting block inside the slide will not leak out from the bottom plate, thereby improving the stability of the module. The baffle can be rotated down by the rotating shaft to open the slide, so that the connecting block and the mounting block can slide out normally, and the normal splicing of the stirring device will not be affected while providing shielding for the connecting block and the mounting block.

[0004] The solder paste stirring device with a tin ball protection structure is provided with a positioning mechanism, and the card slot fixes the position of the slider through the card block, so that the cover plate will not fall off the stirring box. At the same time, when the stirring box needs to be opened, the adjustment plate is pressed to press the slider through the return spring and the slideway, so that the card block is moved out of the card slot, so that the cover plate can be easily removed. Similarly, the adjustment plate is pressed and installed in the card slot, and then the adjustment plate is released to enable the card block to automatically bounce into the card slot through the elastic force of the return spring, so that the user can disassemble and assemble the cover plate. When the cover plate is installed on the stirring box, it can prevent the internal solder paste from splashing out during centrifugal stirring. After the cover plate is removed, the solder paste can be replenished or discharged, and it is also convenient for the user to clean the stirring box.

[0005] When the existing equipment is in use, the solder paste is viscous during the preparation process and may adhere to the wall of the mixing barrel. The mixing barrel is generally deep in the vertical direction, resulting in more solder paste adhering to the barrel wall during the preparation of the solder paste, and the adhered part cannot be mixed, affecting the quality and placement stability of the solder paste. At the same time, after the stirring is completed, it is inconvenient to clean the stirring shaft inside the mixing barrel, so that after completing the mixing on one side, it takes a long time to clean before the next operation can be carried out, which greatly reduces the mixing efficiency. Therefore, a solder paste stirring device with a solder ball protection structure has been developed. Summary of the invention

[0006] The object of the present invention is to provide a solder paste stirring device with a solder ball protection structure to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: A solder paste stirring device with a solder ball protection structure comprises a base, an adjusting member is arranged at the upper end of the base, a support plate is arranged at the upper end of the adjusting member, a clamping block is arranged at the upper end of the base and located on one side of the adjusting member, a stirring drum is arranged on the inner wall of the clamping block, a driving member is arranged at the lower end of the support plate and away from the adjusting member, a clamping assembly is arranged at the output end of the driving member, and the driving member is connected to the stirring drum through the clamping assembly; The clamping assembly comprises a sleeve connected to the output end of the driving member, an annular groove is provided on the inner wall of the sleeve, a power member is provided in the inner cavity of the sleeve, a rotating plate is provided at the output end of the power member, and a plurality of groups of arc grooves are provided at one end of the rotating plate, and the plurality of groups of arc grooves are evenly distributed at the end of the rotating plate; A slider is slidably mounted on the inner wall of each arc-shaped groove, a limiting rod is arranged at the end of the slider, a positioning plate is rotatably mounted on the end of the rotating plate away from the power member, and a sliding groove corresponding to the limiting rod is opened on the side of the positioning plate close to the rotating plate, the inner wall of the sliding groove is slidably connected to the outer surface of the limiting rod, and the end of the limiting rod away from the rotating plate is slidably connected to the inner wall of the annular groove; A cleaning component is assembled in the inner cavity of the mixing drum, and the upper end of the cleaning component is connected to the lower end of the limiting rod, and the residue on the inner wall of the mixing drum is cleaned by the cleaning component.

[0008] As a further optimization solution of the present invention, the cleaning assembly includes a connecting rod connected to the limiting rod, a first stirring block is arranged at the lower end of the connecting rod, and a second stirring block is arranged at the lower end of the first stirring block.

[0009] As a further optimization solution of the present invention, a movable ring is rotatably mounted on the outer surface of the connecting rod, and a bottom plate is provided at the lower end of the movable ring.

[0010] As a further optimization solution of the present invention, a plurality of groups of adjustment rods are rotatably mounted on the lower end of the movable ring, and the plurality of groups of adjustment rods are evenly distributed on the lower end of the movable ring.

[0011] As a further optimization solution of the present invention, an arc plate is rotatably mounted on one end of each adjusting rod away from the movable ring.

[0012] As a further optimization solution of the present invention, an adjustment block is slidably mounted on the outer surface of the connecting rod and below the movable ring.

[0013] As a further optimization solution of the present invention, a positioning rod corresponding to the adjusting rod is rotatably mounted on the outer surface of the adjusting block, and one end of the positioning rod away from the adjusting block is rotatably connected to the outer surface of the adjusting rod.

[0014] As a further optimization solution of the present invention, an elastic member is sleeved on the outer surface of the connecting rod and located below the adjusting block, one end of the elastic member is connected to the adjusting block, and the other end is connected to the bottom plate.

[0015] As a further optimization solution of the present invention, the cross section of the bottom plate is annular, and the inner wall of the bottom plate is slidably connected to the outer surface of the connecting rod.

[0016] As a further optimization solution of the present invention, a threaded block is provided at the lower end of the base plate, and the inner wall of the threaded block is rotatably connected to the outer surface of the connecting rod.

[0017] Compared with the prior art, the present invention provides a solder paste stirring device with a tin ball protection structure. When the power part is started, it synchronously drives a rotating plate arranged at its output end to rotate. Since an arc groove is provided at one end of the rotating plate, when the rotating plate rotates, it drives a slider slidably installed on the inner wall of the arc groove to move. At the same time, the lower end of the slider is fixedly connected to the outer surface of the limit rod, and the limit rod is limited by the positioning plate, so that the limit rod moves along the set trajectory until the end of the limit rod is in contact with the inner wall of the annular groove and stops. Therefore, when the sleeve rotates, the limit rod is synchronously driven to rotate, so that when the stirring shaft is damaged or the stirring is completed, it can be quickly replaced to ensure the solder paste stirring efficiency.

[0018] The arc plates arranged at the ends of the multiple adjusting rods are stably supported on the inner wall of the mixing drum. At the same time, the multiple arc plates are surrounded in a circular ring shape, and the outer surfaces of the multiple arc plates are sleeved with circular scrapers for scraping off the solder paste adhered to the inner wall of the mixing drum, thereby improving the mixing quality.

[0019] The position of the positioning rod arranged on the outer surface of the adjusting block is adjusted by moving the position of the adjusting block. Since the end of the positioning rod is rotatably connected to the outer surface of the adjusting rod, when the adjusting block moves upward, the positioning rod is simultaneously driven to expand outward, thereby pushing the adjusting rod to rotate around the connection with the movable ring, so that the arc plate rotatably mounted on the adjusting rod is tightly fitted to the inner wall of the mixing drum, which is convenient for cleaning the solder paste adhering to the inner wall of the mixing drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A cross-sectional view of the overall internal structure provided by an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a clamping assembly provided in an embodiment of the present invention; Figure 4 A first cross-sectional view of the internal structure of a clamping assembly provided in an embodiment of the present invention; Figure 5 A second cross-sectional view of the internal structure of the clamping assembly provided in an embodiment of the present invention; Figure 6 A first schematic diagram of the cleaning component structure provided by an embodiment of the present invention; Figure 7A second schematic diagram of the cleaning component structure provided by an embodiment of the present invention; Figure 8 A cross-sectional view of the internal structure of a cleaning component provided in an embodiment of the present invention.

[0022] Description of reference numerals: 1. Base; 2. Clamping assembly; 3. Cleaning assembly; 11. Adjusting member; 12. Support plate; 13. Driving member; 14. Clamping block; 15. Mixing drum; 21. Sleeve; 211. Annular groove; 22. Power member; 23. Rotating plate; 24. Arc groove; 25. Sliding block; 26. Limiting rod; 27. Positioning plate; 28. Slide; 31. Connecting rod; 311. First mixing block; 312. Second mixing block; 32. Movable ring; 33. Adjusting rod; 34. Positioning rod; 35. Arc plate; 36. Adjusting block; 37. Elastic member; 38. Bottom plate; 39. Threaded block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example: See Figure 1-Figure 8A solder paste stirring device with a solder ball protection structure includes a base 1, an adjusting member 11 is arranged at the upper end of the base 1, a support plate 12 is arranged at the upper end of the adjusting member 11, and a clamping block 14 is arranged at the upper end of the base 1 and on one side of the adjusting member 11, a stirring drum 15 is arranged on the inner wall of the clamping block 14, a driving member 13 is arranged at the lower end of the support plate 12 and away from the side of the adjusting member 11, and a clamping component 2 is arranged at the output end of the driving member 13, which is connected to the stirring drum 15 through the clamping component 2.

[0026] In this solution, the adjusting member 11 is a device with telescopic function such as an electric telescopic rod, and is connected to an external control device. The adjusting member 11 can drive the support plate 12 arranged at its output end to move up and down, so that the support plate 12 is always in the best position.

[0027] At the same time, the driving member 13 is a device with power output such as a motor, and is connected to an external control device. The driving member 13 provides power for the entire stirring shaft, so that when the driving member 13 is started, the cleaning component 3 is driven to rotate in cooperation with the clamping component 2, thereby mixing the solder paste inside the stirring drum 15.

[0028] The clamping block 14 is composed of two arc blocks, and the ends of the arc blocks are rotatably connected to the base 1 . At the same time, a torsion spring is provided at the connection between the arc block and the base 1 to limit the arc block, thereby further limiting the mixing drum 15 .

[0029] Furthermore, the clamping assembly 2 includes a sleeve 21 connected to the output end of the driving member 13, an annular groove 211 is provided on the inner wall of the sleeve 21, a power member 22 is provided in the inner cavity of the sleeve 21, a rotating plate 23 is provided at the output end of the power member 22, and a plurality of groups of arc grooves 24 are provided at one end of the rotating plate 23, and the plurality of groups of arc grooves 24 are evenly distributed at the end of the rotating plate 23.

[0030] A slider 25 is slidably mounted on the inner wall of each arc groove 24, and a limiting rod 26 is provided at the end of the slider 25. A positioning plate 27 is rotatably mounted on the end of the rotating plate 23 away from the power member 22. At the same time, a sliding groove 28 corresponding to the limiting rod 26 is opened on the side of the positioning plate 27 close to the rotating plate 23. The inner wall of the sliding groove 28 is slidably connected to the outer surface of the limiting rod 26, and the end of the limiting rod 26 away from the rotating plate 23 is slidably connected to the inner wall of the annular groove 211.

[0031] In this embodiment, since the end of the sleeve 21 is connected to the output end of the driving member 13, when the driving member 13 is started, the sleeve 21 is synchronously driven to rotate. At the same time, the inner wall of the annular groove 211 is provided with a plurality of snap-in holes, and the inner wall of the snap-in holes is slidably connected to the outer surface of the limit rod 26.

[0032] The power piece 22 is a device with power output, such as a motor, and is connected to an external control device, so that when the power piece 22 is started, it synchronously drives the rotating plate 23 arranged at its output end to rotate. Since an arc groove 24 is provided at one end of the rotating plate 23, when the rotating plate 23 rotates, it drives the slider 25 slidably installed on the inner wall of the arc groove 24 to move. At the same time, the lower end of the slider 25 is fixedly connected to the outer surface of the limit rod 26, and the limit rod 26 is limited by the positioning plate 27, so that the limit rod 26 moves along the set trajectory until the end of the limit rod 26 fits with the inner wall of the annular groove 211 and stops, so that when the sleeve 21 rotates, the limit rod 26 is synchronously driven to rotate.

[0033] The control device can select a single-chip microcomputer as the control end. In this embodiment, the single-chip microcomputer is a typical embedded microcontroller (Micro controller unit), which is composed of an arithmetic unit, a controller, a memory, an input and output device, etc., which is equivalent to a microcomputer. Compared with the general-purpose microprocessor used in personal computers, it emphasizes self-supply (no external hardware) and cost saving. Its biggest advantage is that it is small in size and can be placed inside the instrument, but it has a small storage capacity, a simple input and output interface, and low functional consumption.

[0034] Furthermore, the cleaning component 3 is assembled in the inner cavity of the mixing drum 15 , and the upper end of the cleaning component 3 is connected to the lower end of the limiting rod 26 , and the residue on the inner wall of the mixing drum 15 is cleaned by the cleaning component 3 .

[0035] The cleaning assembly 3 includes a connecting rod 31 connected to the limiting rod 26 , a first stirring block 311 is disposed at the lower end of the connecting rod 31 , and a second stirring block 312 is disposed at the lower end of the first stirring block 311 .

[0036] A movable ring 32 is rotatably mounted on the outer surface of the connecting rod 31 , and a bottom plate 38 is disposed at the lower end of the movable ring 32 .

[0037] In this embodiment, the outer surface of the limit rod 26 is slidably connected to the upper end of the connecting rod 31, so that no interference will occur when the limit rod 26 is extended or retracted. At the same time, when the limit rod 26 rotates following the sleeve 21, it can synchronously drive the connecting rod 31 to rotate.

[0038] When the connecting rod 31 rotates, the first stirring block 311 and the second stirring block 312 arranged at the lower end of the connecting rod 31 are driven to rotate synchronously, wherein the cross-section of the first stirring block 311 is annular, and the second stirring block 312 is composed of multiple stirring rods and is evenly distributed on the outer surface of the first stirring block 311, thereby enhancing the mixing efficiency of the solder paste.

[0039] A guide rod is provided at the lower end of the movable ring 32 , and the lower end of the guide rod is connected to the bottom plate 38 , so that the movable ring 32 and the bottom plate 38 are supported by the guide rod to ensure the overall stability of the movable ring 32 and the bottom plate 38 .

[0040] Further, a plurality of adjustment rods 33 are rotatably mounted on the lower end of the movable ring 32, and the plurality of adjustment rods 33 are evenly distributed on the lower end of the movable ring 32. An arc plate 35 is rotatably mounted on one end of each adjustment rod 33 away from the movable ring 32.

[0041] An adjusting block 36 is slidably mounted on the outer surface of the connecting rod 31 and located below the movable ring 32. A positioning rod 34 corresponding to the adjusting rod 33 is rotatably mounted on the outer surface of the adjusting block 36, and one end of the positioning rod 34 away from the adjusting block 36 is rotatably connected to the outer surface of the adjusting rod 33.

[0042] Specifically, the arc plates 35 arranged at the ends of the multiple adjusting rods 33 are stably supported on the inner wall of the mixing drum 15. At the same time, the multiple arc plates 35 are surrounded in a circular ring shape, and the outer surfaces of the multiple arc plates 35 are sleeved with circular scrapers for scraping off the solder paste adhered to the inner wall of the mixing drum 15, thereby improving the mixing quality.

[0043] The position of the positioning rod 34 arranged on the outer surface of the adjusting block 36 is adjusted by moving the position of the adjusting block 36. Since the end of the positioning rod 34 is rotatably connected to the outer surface of the adjusting rod 33, when the adjusting block 36 moves upward, the positioning rod 34 is simultaneously driven to expand outward, thereby pushing the adjusting rod 33 to rotate around the connection with the movable ring 32, so that the arc plate 35 rotatably mounted on the adjusting rod 33 is tightly attached to the inner wall of the mixing drum 15, which is convenient for cleaning the solder paste adhering to the inner wall of the mixing drum 15.

[0044] Furthermore, an elastic member 37 is sleeved on the outer surface of the connecting rod 31 and located below the adjusting block 36 . One end of the elastic member 37 is connected to the adjusting block 36 , and the other end is connected to the bottom plate 38 .

[0045] The bottom plate 38 has a circular cross section, and the inner wall of the bottom plate 38 is slidably connected to the outer surface of the connecting rod 31. A threaded block 39 is provided at the lower end of the bottom plate 38, and the inner wall of the threaded block 39 is rotatably connected to the outer surface of the connecting rod 31.

[0046] Specifically, the elastic member 37 is an elastic member such as a spring, and the adjusting block 36 is supported by the elastic member 37 so that the adjusting block 36 is stably in an extruded state, so that when the solder paste on the inner wall of the mixing drum 15 is cleaned, the arc plate 35 will not be loosened.

[0047] The connecting rod 31 is a threaded rod, and when the connecting rod 31 rotates, it cooperates with the threaded block 39 to move up and down, so that the arc plate 35 cleans the solder paste on the inner wall of the mixing drum 15.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A solder paste stirring device with a solder ball protection structure, characterized in that: The invention comprises a base (1), wherein an adjusting member (11) is arranged at the upper end of the base (1), a supporting plate (12) is arranged at the upper end of the adjusting member (11), a clamping block (14) is arranged at the upper end of the base (1) and located on one side of the adjusting member (11), a mixing drum (15) is arranged on the inner wall of the clamping block (14), a driving member (13) is arranged at the lower end of the supporting plate (12) and away from the adjusting member (11), and a clamping assembly (2) is arranged at the output end of the driving member (13), and is connected to the mixing drum (15) via the clamping assembly (2); The clamping assembly (2) comprises a sleeve (21) connected to the output end of the driving member (13); an annular groove (211) is provided on the inner wall of the sleeve (21); a power member (22) is provided in the inner cavity of the sleeve (21); a rotating plate (23) is provided at the output end of the power member (22); and a plurality of groups of arc grooves (24) are provided at one end of the rotating plate (23); and the plurality of groups of arc grooves (24) are evenly distributed at the end of the rotating plate (23); A slider (25) is slidably mounted on the inner wall of each arc-shaped groove (24), a limiting rod (26) is arranged at the end of the slider (25), a positioning plate (27) is rotatably mounted on the end of the rotating plate (23) away from the power member (22), and a sliding groove (28) corresponding to the limiting rod (26) is provided on the side of the positioning plate (27) close to the rotating plate (23), the inner wall of the sliding groove (28) is slidably connected to the outer surface of the limiting rod (26), and the end of the limiting rod (26) away from the rotating plate (23) is slidably connected to the inner wall of the annular groove (211); A cleaning component (3) is mounted in the inner cavity of the mixing drum (15), and the upper end of the cleaning component (3) is connected to the lower end of the limiting rod (26). The cleaning component (3) is used to clean the residue on the inner wall of the mixing drum (15).

2. The solder paste stirring device with a solder ball protection structure according to claim 1, characterized in that: The cleaning assembly (3) comprises a connecting rod (31) connected to the limiting rod (26), a first stirring block (311) being arranged at the lower end of the connecting rod (31), and a second stirring block (312) being arranged at the lower end of the first stirring block (311).

3. The solder paste stirring device with a solder ball protection structure according to claim 2, characterized in that: A movable ring (32) is rotatably mounted on the outer surface of the connecting rod (31), and a bottom plate (38) is provided at the lower end of the movable ring (32).

4. The solder paste stirring device with a solder ball protection structure according to claim 3, characterized in that: A plurality of groups of adjustment rods (33) are rotatably mounted on the lower end of the movable ring (32), and the plurality of groups of adjustment rods (33) are evenly distributed on the lower end of the movable ring (32).

5. The solder paste stirring device with a solder ball protection structure according to claim 4, characterized in that: An arc-shaped plate (35) is rotatably mounted on one end of each adjusting rod (33) away from the movable ring (32).

6. The solder paste stirring device with a solder ball protection structure according to claim 5, characterized in that: An adjustment block (36) is slidably mounted on the outer surface of the connecting rod (31) and below the movable ring (32).

7. The solder paste stirring device with a solder ball protection structure according to claim 6, characterized in that: A positioning rod (34) corresponding to the adjusting rod (33) is rotatably mounted on the outer surface of the adjusting block (36), and one end of the positioning rod (34) away from the adjusting block (36) is rotatably connected to the outer surface of the adjusting rod (33).

8. The solder paste stirring device with a solder ball protection structure according to claim 7, characterized in that: An elastic member (37) is sleeved on the outer surface of the connecting rod (31) and located below the adjusting block (36); one end of the elastic member (37) is connected to the adjusting block (36), and the other end is connected to the bottom plate (38).

9. The solder paste stirring device with a solder ball protection structure according to claim 8, characterized in that: The bottom plate (38) has a circular ring-shaped cross section, and the inner wall of the bottom plate (38) is slidably connected to the outer surface of the connecting rod (31).

10. The solder paste stirring device with a solder ball protection structure according to claim 9, characterized in that: A threaded block (39) is provided at the lower end of the bottom plate (38), and the inner wall of the threaded block (39) is rotatably connected to the outer surface of the connecting rod (31).

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