Novel tin spraying device for PCB processing

Abstract

The utility model relates to the technical field of PCB (printed circuit board) processing, in particular to a novel tin spraying device for PCB processing, which comprises a liquid storage tank, four groups of supporting legs are fixedly connected to the bottom of the liquid storage tank, molten tin liquid is filled in the liquid storage tank, and a heating rod capable of heating the tin liquid in the liquid storage tank is fixedly connected in the liquid storage tank. The upper end of the liquid storage tank is fixedly communicated with a liquid conveying pipe, a gear pump is further fixedly installed on the outer wall of the liquid storage tank, a water inlet of the gear pump is fixedly communicated with the interior of the liquid storage tank, a water outlet of the gear pump is fixedly communicated with the liquid conveying pipe, a plurality of liquid leakage holes are formed in the upper end of the liquid storage tank, and a fixing device capable of limiting and fixing a PCB is fixedly installed at the upper end of the liquid storage tank. A collecting device capable of collecting waste gas generated by the tin liquid is further fixedly installed at the upper end of the liquid storage box, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of PCB board processing technology, specifically to a novel PCB board processing tin spraying device. Background Technology

[0002] In the tin plating process of PCB manufacturing, traditional tin plating equipment mainly focuses on the execution of the tin plating process itself, such as the uniformity of molten solder spraying and temperature control. However, with increasing environmental awareness and higher requirements for production efficiency and quality control, traditional equipment has revealed many shortcomings.

[0003] During the production process, a large number of waste PCB boards are generated. If these waste boards are not disposed of properly in a timely manner, they will not only occupy a lot of space, but may also cause environmental pollution due to the metals and other components they contain. At the same time, the method of fixing the PCB board is also crucial during the tin plating operation. Traditional fixing methods are often relatively simple and difficult to adapt to PCB boards of different sizes and shapes. This can easily lead to displacement of the PCB board during the tin plating process, affecting the accuracy and quality of the tin plating, thereby increasing the scrap rate and production costs.

[0004] Chinese patent (authorization announcement number: CN219371427U) discloses a PCB board tin surface improvement processing device, relating to the field of PCB board technology. The device includes a PCB board, an insulator, and conductive terminals. Electrodes are provided on the surface of the conductive terminals. A slot 1 for inserting the conductive terminals and a slot 2 for inserting the PCB board are provided on the surface of the insulator. The PCB board also includes an L-shaped tin-spraying section at its end. This PCB board tin surface improvement processing device, by setting the tin-spraying section to an L-shape, achieves better contact and wrapping of the electrodes on the conductive terminal surface, resulting in better electrofusion connection. Furthermore, when processing the tin surface of the PCB board's tin-spraying section, only the contact surface between the tin-spraying section and the electrodes needs to be processed, reducing production costs. It also avoids the problems of uneven tin surface due to insufficient tin spraying on both sides, affecting conductivity, and waste caused by excessive tin spraying spreading across the PCB board.

[0005] To address this issue, we propose a novel tin-spraying device for PCB board processing. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a novel tin-spraying device for PCB board processing, thus solving the problems mentioned below.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A novel PCB board processing tin spraying device includes a liquid storage tank, and four sets of support legs are fixedly connected to the bottom of the liquid storage tank. The liquid storage tank is filled with molten tin liquid. A heating rod that can heat the tin liquid inside the liquid storage tank is fixedly connected to the inside of the liquid storage tank. A liquid delivery pipe is fixedly connected to the upper end of the liquid storage tank, and a gear pump is fixedly installed on the outer wall of the liquid storage tank.

[0009] Furthermore, the inlet of the gear pump is fixedly connected to the inside of the storage tank, the outlet of the gear pump is fixedly connected to the delivery pipe, several leakage holes are opened at the upper end of the storage tank, a fixing device for limiting and fixing the PCB board is fixedly installed at the upper end of the storage tank, and a collection device for collecting the waste gas generated by the molten solder is also fixedly installed at the upper end of the storage tank.

[0010] As a further aspect of this solution, the fixing device includes a limiting plate, which is fixedly connected to the liquid storage tank via multiple sets of second electric telescopic arms. Two sets of movable plates are slidably connected to the upper end of the limiting plate, and two sets of rotating arms are rotatably connected to the bottom of each set of movable plates via a rotating shaft.

[0011] As a further aspect of this solution, a reset torsion spring is fixedly connected between the rotating arm and the moving plate, an abutment wheel is rotatably connected to the bottom of the rotating arm, a second rack is fixedly connected to one end of each of the two sets of moving plates, and a second gear is rotatably connected to the upper end of the limiting plate, with the second gear meshing with the second rack.

[0012] As a further aspect of this solution, a first gear is rotatably connected to the upper end of the limiting plate, and the first gear and the second gear are fixedly connected to each other. A first electric telescopic arm is fixedly connected to the upper end of the limiting plate, and a first rack is fixedly connected to the output end of the first electric telescopic arm. The first rack and the first gear mesh with each other.

[0013] As a further aspect of this solution, the collecting device includes a connecting frame, which is fixedly connected to the upper end of the limiting plate. An installation box is fixedly connected inside the connecting frame, and a drive motor is fixedly installed at the bottom of the installation box. A fan blade is fixedly connected to the output end of the drive motor.

[0014] As a further aspect of this solution, a collection box is fixedly connected to the upper end of the connecting frame. The collection box and the installation box are fixedly connected through a pipe. Several sliding openings are provided inside the collection box, and a filter screen is slidably connected inside each set of sliding openings. A connecting pipe is fixedly connected to the outer wall of the connecting frame.

[0015] Beneficial effects

[0016] This invention provides a novel tin-spraying device for PCB board processing. Compared with the prior art, it has the following advantages:

[0017] 1. This novel PCB board processing tin spraying device involves placing the PCB board on the upper end of a limiting plate. The first electric telescopic arm is then activated, driving a first rack, which in turn drives a first gear. The first gear drives a second gear, which in turn drives two sets of second racks to move in opposite directions. The second racks then move a moving plate, which in turn drives a rotating arm and abutment wheel to rotate. When the abutment wheel contacts the outer wall of the PCB board, the rotating arm rotates. Because the rotating arm is at a right angle, it provides a corrective and fixing effect on the PCB board during contact.

[0018] 2. This new type of PCB board processing tin spraying device starts by driving a motor to rotate the fan blades, which absorb the generated exhaust gas. The exhaust gas is then filtered by a filter screen inside the collection box. Attached Figure Description

[0019] Figure 1 This is a front view of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the position and structure of the main infusion tube of this utility model;

[0021] Figure 3 This is a schematic diagram of the position structure of the first rack in the main body of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the main collection box of this utility model.

[0023] In the diagram: 1. Storage tank; 2. Support leg; 3. Baffle frame; 4. Connecting frame; 5. Leakage hole; 6. Infusion tube; 8. Moving plate; 9. Limiting plate;

[0024] 10. Abutting wheel; 11. Rotating arm; 12. First electric telescopic arm; 13. First rack; 14. First gear; 15. Slide rod; 16. Second gear; 17. Filter screen; 18. Slide opening; 19. Collection box; 20. Second electric telescopic arm;

[0025] 21. Mounting box; 22. Fan blade; 23. Drive motor; 24. Connecting pipe; 25. Gear pump; 26. Second rack; 101. Fixing device; 201. Collection device. Detailed Implementation

[0026] 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.

[0027] Example 1: Please refer to Figure 1-4 As shown, this utility model provides a technical solution: a novel PCB board processing tin spraying device, including a liquid storage tank 1, with four sets of support legs 2 fixedly connected to the bottom of the liquid storage tank 1, and the support legs 2 are arranged in an array at the bottom of the liquid storage tank 1. The liquid storage tank 1 is filled with molten tin liquid, and a heating rod for heating the tin liquid inside the liquid storage tank 1 is fixedly connected inside the liquid storage tank 1. The heating rod is made of copper, which has good thermal conductivity and corrosion resistance, and is durable. The liquid storage tank 1 is also filled with sponge, which can effectively keep the tin liquid inside the liquid storage tank 1 warm. An infusion pipe 6 is fixedly connected to the upper end of the liquid storage tank 1, and the outer wall of the liquid storage tank 1... A gear pump 25 is also fixedly installed, and the inlet of the gear pump 25 is fixedly connected to the inside of the liquid storage tank 1. The outlet of the gear pump 25 is fixedly connected to the infusion pipe 6. Several leakage holes 5 are opened at the upper end of the liquid storage tank 1, and the several leakage holes 5 are arranged in an array at the upper end of the liquid storage tank 1. A baffle frame 3 is also fixedly connected to the upper end of the liquid storage tank 1. The baffle frame 3 can collect the solder liquid sprayed out by the infusion pipe 6 to prevent the solder liquid from splashing. A fixing device 101 that can limit and fix the PCB board is fixedly installed at the upper end of the liquid storage tank 1. A collection device 201 that can collect the waste generated by the solder liquid is also fixedly installed at the upper end of the liquid storage tank 1, and the collection device 201 is located above the fixing device 101.

[0028] Example 2: Please refer to Figure 2 , 3 As shown, the fixing device 101 includes a limiting plate 9, which is located above the liquid storage tank 1. The limiting plate 9 and the liquid storage tank 1 are fixedly connected by multiple sets of second electric telescopic arms 20. Two sets of movable plates 8 are slidably connected to the upper end of the limiting plate 9, and the two sets of movable plates 8 are symmetrically distributed on the upper end of the limiting plate 9. Specifically, two sets of sliding rods 15 are fixedly connected to the upper end of the limiting plate 9, and the two sets of sliding rods 15 are symmetrically distributed on the upper end of the limiting plate 9. Each set of movable plates 8 is slidably connected to the outer wall of the two sets of sliding rods 15. The outer wall of the sliding rods 15 and the inside of the movable plates 8 are coated with lubricating oil. When the movable plates 8 are on the outside of the sliding rods 15, the lubricating oil is applied to the outer wall of the sliding rods 15. When moving on the wall, the slide bar 15 can limit the movement of the moving plate 8 and also has a guiding function, thereby improving the stability of the moving plate 8 during movement. The lubricating oil can also extend the service life of the slide bar 15. Each set of moving plates 8 has two sets of rotating arms 11 rotatably connected to the bottom of the rotating arm 8 through a rotating shaft. The rotating arms 11 are in a "V" shape. A reset torsion spring is fixedly connected between the rotating arm 11 and the moving plate 8. A stop wheel 10 is rotatably connected to the bottom of the rotating arm 11. A rubber sleeve is fixedly connected to the outer wall of the stop wheel 10. The rubber sleeve can reduce the squeezing force between the stop wheel 10 and the PCB board and prevent excessive squeezing force on the PCB board, which may cause damage.

[0029] Two sets of movable plates 8 are fixedly connected to one end of the opposite side with a second rack 26, and a second gear 16 is rotatably connected to the upper end of the limiting plate 9. The second gear 16 and the second rack 26 mesh with each other. A first gear 14 is also rotatably connected to the upper end of the limiting plate 9, and the first gear 14 and the second gear 16 are fixedly connected to each other. A first electric telescopic arm 12 is fixedly connected to the upper end of the limiting plate 9, and a first rack 13 is fixedly connected to the output end of the first electric telescopic arm 12. The first rack 13 and the first gear 14 mesh with each other.

[0030] Please see Figure 4 As shown, the collection device 201 includes a connecting frame 4, which is fixedly connected to the upper end of the limiting plate 9. An installation box 21 is fixedly connected inside the connecting frame 4, and a drive motor 23 is fixedly installed at the bottom of the installation box 21. A fan blade 22 is fixedly connected to the output end of the drive motor 23, and the fan blade 22 is located inside the installation box 21. A collection box 19 is fixedly connected to the upper end of the connecting frame 4. The collection box 19 and the installation box 21 are fixedly connected through a pipe. Several sliding ports 18 are opened inside the collection box 19, and a filter screen 17 is slidably connected inside each set of sliding ports 18. The filter screen 17 is made of metal, which has good corrosion resistance and high temperature resistance, and is durable. A connecting pipe 24 is fixedly connected to the outer wall of the connecting frame 4, and an external pipe needs to be connected to the connecting pipe 24 to discharge polluted gas.

[0031] Working principle: When in use, the heating rod will continuously heat the molten solder inside the storage tank 1, and the gear pump 25 will continuously draw from the storage tank 1 to the delivery tube 6. The molten solder sprayed out by the delivery tube 6 will flow at the top of the storage tank 1 and then enter the storage tank 1 through the leakage hole 5.

[0032] When it is necessary to fix the PCB board, simply place the PCB board on the upper end of the limiting plate 9. At this time, the first electric telescopic arm 12 is activated. The first electric telescopic arm 12 drives the first rack 13, the first rack 13 drives the first gear 14 to rotate, the first gear 14 drives the second gear 16 to rotate, the second gear 16 drives the two sets of second racks 26 to move in opposite directions, the second racks 26 drive the moving plate 8 to move, and the moving plate 8 will drive the rotating arm 11 and the abutment wheel 10 to rotate. When the abutment wheel 10 abuts against the outer wall of the PCB board, the rotating arm 11 will rotate. Since the rotating arm 11 is at a right angle, it can have a corrective and fixing effect on the PCB board when it abuts against it. At this time, the second electric telescopic arm 20 is activated. The second electric telescopic arm 20 drives the limiting plate 9 to move downward, and the PCB board comes into contact with the molten solder sprayed from the infusion tube 6.

[0033] At this time, the drive motor 23 can be started to drive the fan blades 22 to rotate. The fan blades 22 absorb the generated exhaust gas. After passing through the inside of the collection box 19, the filter screen 17 filters it. When the filter screen 17 is damaged, it can be easily replaced by pulling the filter screen 17 out from the inner wall of the slide 18.

[0034] 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 a process, method, article, or apparatus.

[0035] 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. A novel PCB board processing tin spraying device, comprising a liquid storage tank (1), characterized in that: The bottom of the liquid storage tank (1) is fixedly connected to four sets of support legs (2). The liquid storage tank (1) is filled with melted liquid tin. The liquid storage tank (1) is fixedly connected to a heating rod that can heat the liquid tin inside the liquid storage tank (1). The upper end of the liquid storage tank (1) is fixedly connected to a delivery pipe (6). A gear pump (25) is also fixedly installed on the outer wall of the liquid storage tank (1). The inlet of the gear pump (25) is fixedly connected to the inside of the storage tank (1), the outlet of the gear pump (25) is fixedly connected to the delivery pipe (6), the upper end of the storage tank (1) is provided with several leakage holes (5), the upper end of the storage tank (1) is fixedly installed with a fixing device (101) that can limit and fix the PCB board, and the upper end of the storage tank (1) is also fixedly installed with a collection device (201) that can collect the waste generated by the molten solder.

2. The novel PCB board processing tin spraying device according to claim 1, characterized in that: The fixing device (101) includes a limiting plate (9), which is fixedly connected to the liquid storage tank (1) by multiple sets of second electric telescopic arms (20). Two sets of moving plates (8) are slidably connected to the upper end of the limiting plate (9), and two sets of rotating arms (11) are rotatably connected to the bottom of each set of moving plates (8) through a rotating shaft.

3. The novel PCB board processing tin spraying device according to claim 2, characterized in that: A reset torsion spring is fixedly connected between the rotating arm (11) and the moving plate (8). An abutment wheel (10) is rotatably connected to the bottom of the rotating arm (11). A second rack (26) is fixedly connected to one end of each of the two sets of moving plates (8). A second gear (16) is rotatably connected to the upper end of the limiting plate (9). The second gear (16) meshes with the second rack (26).

4. The novel PCB board processing tin spraying device according to claim 3, characterized in that: The upper end of the limiting plate (9) is also rotatably connected to a first gear (14), and the first gear (14) and the second gear (16) are fixedly connected to each other. The upper end of the limiting plate (9) is fixedly connected to a first electric telescopic arm (12), and the output end of the first electric telescopic arm (12) is fixedly connected to a first rack (13), and the first rack (13) and the first gear (14) mesh with each other.

5. The novel PCB board processing tin spraying device according to claim 1, characterized in that: The collecting device (201) includes a connecting frame (4), which is fixedly connected to the upper end of the limiting plate (9). An installation box (21) is fixedly connected inside the connecting frame (4), and a drive motor (23) is fixedly installed at the bottom of the installation box (21). A fan blade (22) is fixedly connected to the output end of the drive motor (23).

6. The novel PCB board processing tin spraying device according to claim 5, characterized in that: The upper end of the connecting frame (4) is fixedly connected to a collection box (19). The collection box (19) and the mounting box (21) are fixedly connected through a pipe. The collection box (19) has several sliding openings (18) inside, and each set of sliding openings (18) is slidably connected to a filter screen (17). The outer wall of the connecting frame (4) is fixedly connected to a connecting pipe (24).

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