Cooling equipment for PCB (Printed Circuit Board) tin spraying plate

Abstract

The utility model relates to PCB (Printed Circuit Board) tin-spraying plate cooling equipment, which belongs to the technical field of PCB tin-spraying plates and comprises two air inlet boxes, a fan is fixed between opposite sides of the left side wall and the right side wall of an inner cavity of each air inlet box, supporting plates are fixed at the left end and the right end between the opposite sides of the two air inlet boxes, an adjusting mechanism is arranged on the inner bottom wall of the supporting plate at the left end, and the adjusting mechanism is arranged on the inner bottom wall of the supporting plate at the right end. The upper surface of the air inlet box at the upper end and the lower surface of the air inlet box at the lower end are each provided with two air inlet holes, and inner cavities of the air inlet holes are provided with dust filtering mechanisms used for preventing dust from entering the inner cavities of the air inlet boxes. The adjusting mechanism comprises a motor fixed to the inner bottom wall of the left end supporting plate. According to the PCB tin-spraying plate cooling equipment, when the height of the driving rotating roller is adjusted, the height of the driving rotating roller can be adjusted through cooperation of the motor, the threaded rod, the sliding rod, the moving plate and the limiting strip, so that a PCB tin-spraying plate is clamped between the driving rotating roller and the driven rotating roller to do transverse movement, and then the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB spray tin plates, in particular to a cooling device for PCB spray tin plates. Background Technique

[0002] Printed circuit boards can be divided into spray tin plates, gold-immersion plates, silver-immersion plates, OSP plates, etc. from the production and manufacturing process. Among them, the spray tin plate is a common type of PCB board, generally a multi-layer (4 - 46 layers) high-precision PCB board, which is used in various fields and products such as electronic devices, communication products, computers, medical devices, aerospace, etc.

[0003] Through retrieval, it is found that the Chinese patent publication number: CN214960364U discloses a cooling device for PCB lead-free spray tin treatment, including a first air inlet box. The top of the first air inlet box is fixedly connected with a base through bolts. The top of the base is fixedly connected with a support plate through bolts. The top end of the support plate is fixedly connected with a second air inlet box through bolts. Filter nets are embedded on the outer walls of one side of the first air inlet box and the second air inlet box, and inner cavities are opened inside the first air inlet box and the second air inlet box. For this cooling device for PCB lead-free spray tin treatment, by adjusting the distance between the driving roller and the driven roller, and under the resilience of the spring, PCBs with different widths can be clamped, and under the limitation of the annular groove, stable horizontal transportation of the PCB is realized. While ensuring the stability of PCB transportation, the problem of bumps, abrasion, and dropping of the PCB after lead-free spray tin is avoided, and the air above and below can fully blow on the surface of the PCB. However, in this utility model, the staff still needs to rotate the handwheel to make the screw rod rotate, thereby adjusting the distance between the driven roller and the driving roller, which increases the labor intensity of the staff and reduces the practicability. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a cooling device for PCB spray tin plates, which has the advantages of being convenient to adjust the distance between the driven roller and the driving roller, etc., and solves the problem that the staff still needs to rotate the handwheel to make the screw rod rotate, thereby adjusting the distance between the driven roller and the driving roller, which increases the labor intensity of the staff and reduces the practicability.

[0005] To achieve the above object, the utility model provides the following technical solution: A cooling device for PCB spray tin plates includes two air inlet boxes. A fan is fixed between the opposite sides of the left and right inner side walls of the inner cavity of the air inlet box. Both ends of the left and right sides between the opposite sides of the two air inlet boxes are fixedly connected with support plates. An adjusting mechanism is provided on the inner bottom wall of the left support plate. Two air inlet holes are opened on the upper surface of the upper air inlet box and the lower surface of the lower air inlet box. A dust filtering mechanism for preventing dust from entering the inner cavity of the air inlet box is provided in the inner cavity of the air inlet hole;

[0006] The adjusting mechanism includes a motor fixed to the inner bottom wall of the left end support plate. A threaded rod is fixed to the output shaft of the motor. A sliding rod is fixed between the opposite sides of the inner top wall and the inner bottom wall of the right end support plate. A moving plate is provided between the opposite sides of the two support plates. The left and right ends of the moving plate penetrate through the support plates and extend into the inner cavities of the support plates. The moving plate is threadedly connected to the threaded rod and slidably connected to the sliding rod. Limit strips are fixed to the inner walls of the opposite sides of the two support plates.

[0007] Furthermore, a plurality of air outlet holes are formed on the opposite sides of the two air inlet boxes. The plurality of air outlet holes are evenly distributed on the opposite sides of the two air inlet boxes. Support seats are fixed to the left and right ends of the lower surface of the lower air inlet box.

[0008] Furthermore, a plurality of driven rollers are evenly fixed to the upper surface of the lower air inlet box. A plurality of compression springs are fixed to the lower surface of the upper air inlet box. A driving roller is fixed to the lower surface of the compression spring. A motor is fixed to the front surface of the driving roller.

[0009] Furthermore, the upper surface of the threaded rod is rotatably connected to the inner top wall of the left end support plate through a bearing. The left and right ends of the moving plate perform linear up and down movements within the inner cavities of the limit strips.

[0010] Furthermore, the ash filtering mechanism includes a filter screen arranged in the inner cavity of the air inlet hole. Limit grooves are formed on the left and right sides of the filter screen. Two cavities are formed at the left and right ends of the inner top wall of the upper air inlet box and the left and right ends of the inner bottom wall of the lower air inlet box. Telescopic rods are fixed to the opposite sides of the two cavities. Return springs are movably sleeved on the outer surfaces of the telescopic rods. Movable plates are fixed to the opposite sides of the two telescopic rods. Limit blocks are fixed to the opposite sides of the two movable plates.

[0011] Furthermore, the size of the filter screen is adapted to the size of the inner cavity of the air inlet hole. The size of the limit block is adapted to the size of the limit groove.

[0012] Furthermore, the opposite sides of the two limit blocks penetrate through the cavities and extend into the inner cavity of the air inlet hole. The two ends of the return spring are respectively fixedly connected between the cavity and the opposite side of the movable plate.

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0014] 1. When adjusting the height of the active roller of this PCB hot tin spraying board cooling device, through the cooperation of the set motor, threaded rod, sliding rod, moving plate and limiting strip, the height of the active roller can be adjusted, so that the PCB hot tin spraying board is clamped between the active roller and the driven roller and moves horizontally, thereby reducing the labor intensity of the staff.

[0015] 2. This PCB hot tin spraying board cooling device can effectively prevent dust from entering the inner cavity of the air inlet box through the set filter screen, reduce the dust adhering to the surface of the PCB hot tin spraying board, and the set dust filtering mechanism can limit and disassemble the filter screen, so as to facilitate the staff to replace the filter screen regularly, thereby improving the filtering effect of the filter screen. Brief Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the present utility model;

[0017] Figure 2 It is a schematic external structure diagram of the lower air inlet box of the present utility model;

[0018] Figure 3 It is a schematic structural diagram of the adjustment mechanism of the present utility model;

[0019] Figure 4 It is a schematic structural diagram of the dust filtering mechanism of the present utility model.

[0020] In the figure: 1 air inlet box, 2 fan, 3 support plate, 4 adjustment mechanism, 401 motor, 402 threaded rod, 403 sliding rod, 404 moving plate, 405 limiting strip, 5 air inlet hole, 6 dust filtering mechanism, 601 filter screen, 602 limiting groove, 603 cavity, 604 telescopic rod, 605 return spring, 606 movable plate, 607 limiting block. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1-2, the PCB spray tin plate cooling device in this embodiment includes two air inlet boxes 1. A fan 2 is fixed between the opposite sides of the left and right inner side walls of the inner cavity of the air inlet box 1. Support plates 3 are fixed at both the left and right ends between the opposite sides of the two air inlet boxes 1. An adjusting mechanism 4 is provided on the inner bottom wall of the left support plate 3. Two air inlet holes 5 are opened on the upper surface of the upper air inlet box 1 and the lower surface of the lower air inlet box 1 respectively. A dust filtering mechanism 6 for preventing dust from entering the inner cavity of the air inlet box 1 is provided in the inner cavity of the air inlet hole 5.

[0023] Among them, a plurality of air outlet holes are opened on the opposite sides of the two air inlet boxes 1, and the plurality of air outlet holes are evenly distributed on the opposite sides of the two air inlet boxes 1. Support seats are fixed at both the left and right ends of the lower surface of the lower air inlet box 1.

[0024] In this embodiment, a plurality of driven rollers are evenly fixed on the upper surface of the lower air inlet box 1, a plurality of compression springs are fixed on the lower surface of the upper air inlet box 1, a driving roller is fixed on the lower surface of the compression spring, and a motor is fixed on the front surface of the driving roller.

[0025] Please refer to Figure 3 , in order to reduce the labor intensity of the staff, the adjusting mechanism 4 in this embodiment includes a motor 401 fixed on the inner bottom wall of the left support plate 3. A threaded rod 402 is fixed on the output shaft of the motor 401. A slide rod 403 is fixed between the opposite sides of the inner top wall and the inner bottom wall of the right support plate 3. A moving plate 404 is provided between the opposite sides of the two support plates 3. The left and right ends of the moving plate 404 penetrate through the support plate 3 and extend into the inner cavity of the support plate 3. The moving plate 404 is threadedly connected with the threaded rod 402 and is slidably connected with the slide rod 403. Place the PCB spray tin plate on the upper surface of the driven roller, and then start the motor 401. The output shaft of the motor 401 rotates, thereby driving the threaded rod 402 to rotate. The rotation of the threaded rod 402 causes the moving plate 404 threadedly connected to its surface to move downward. Limit strips 405 are fixed on the inner walls of the opposite sides of the two support plates 3.

[0026] Among them, the upper surface of the threaded rod 402 is rotatably connected to the inner top wall of the left support plate 3 through a bearing, and the left and right ends of the moving plate 404 move linearly up and down in the inner cavity of the limit strip 405.

[0027] It can be understood that the movement of the moving plate 404 can cause the driving roller to move downward, thereby fixing the PCB spray tin plate. Then start the motor, so that the driving roller rotates and the PCB spray tin plate can be moved horizontally, and the cooperation with the fan 2 and the air outlet holes can cool the surface of the PCB spray tin plate. The compression spring provided can facilitate the clamping of PCB spray tin plates of different sizes.

[0028] Please refer to Figure 4, in order to reduce dust adhesion on the surface of the PCB spray tin plate, the dust filtering mechanism 6 in this embodiment includes a filter screen 601 arranged in the inner cavity of the air inlet hole 5. By providing the filter screen 601, dust can be effectively prevented from entering the inner cavity of the air inlet box 1. Limiting grooves 602 are opened on both the left and right sides of the filter screen 601. Two cavities 603 are opened at both the left and right ends of the inner top wall of the upper air inlet box 1 and at both the left and right ends of the inner bottom wall of the lower air inlet box 1. Telescopic rods 604 are fixed on the opposite sides of the two cavities 603. A return spring 605 is movably sleeved on the outer surface of the telescopic rod 604. Movable plates 606 are fixed on the opposite sides of the two telescopic rods 604. When the movable plate 606 moves, at this time, the movement of the movable plate 606 can squeeze the telescopic rod 604 and the return spring 605 to make them shorten. Limiting blocks 607 are fixed on the opposite sides of the two movable plates 606. The movement of the movable plate 606 enables the limiting block 607 to enter the inner cavity of the cavity 603, thereby releasing the limit on the filter screen 601 and removing and replacing it.

[0029] Among them, the size of the filter screen 601 is adapted to the size of the inner cavity of the air inlet hole 5, the size of the limiting block 607 is adapted to the size of the limiting groove 602. The opposite sides of the two limiting blocks 607 penetrate through the cavity 603 and extend into the inner cavity of the air inlet hole 5. The two ends of the return spring 605 are fixedly connected between the cavity 603 and the opposite side of the movable plate 606 respectively.

[0030] It should be noted that a dial plate is fixed on the front surface of the movable plate 606. The front surface of the dial plate penetrates through the cavity 603 and extends to the front side of the air inlet box 1. A limiting hole adapted to the size of the dial plate is opened on the front surface of the air inlet box 1.

[0031] The working principle of the above embodiment is as follows:

[0032] (1) When adjusting the height of the driving roller, first place the PCB spray tin plate on the upper surface of the driven roller, and then start the motor 401. The output shaft of the motor 401 rotates, thereby driving the threaded rod 402 to rotate. The rotation of the threaded rod 402 causes the moving plate 404 threadedly connected to its surface to move downward. At this time, the right end of the moving plate 404 moves downward on the outer surface of the sliding rod 403. When the moving plate 404 moves, both ends of it perform up and down linear motion in the inner cavity of the limiting strip 405, which can limit its movement. The movement of the moving plate 404 can make the driving roller move downward, thereby fixing the PCB spray tin plate, and then start the motor to make the driving roller rotate, thereby laterally moving the PCB spray tin plate.

[0033] (2) The dust can be effectively prevented from entering the inner cavity of the intake box 1 through the provided filter screen 601. In order to improve the filtering effect of the filter screen 601, it needs to be replaced regularly. When disassembling the filter screen 601, first move the dial plate so that the two dial plates move in opposite directions. The movement of the two dial plates can drive the movable plate 606 to move. At this time, the movement of the movable plate 606 can squeeze the telescopic rod 604 and the return spring 605 to make them shorten, so that the limit block 607 enters the inner cavity of the cavity 603, thereby releasing the limit on the filter screen 601 and taking it out and replacing it.

[0034] It should be noted that in this article, relational terms such as first and second 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A PCB tin-spraying plate cooling device, comprising two air inlet boxes (1), characterized in that: A fan (2) is fixed between the opposite sides of the left and right side walls of the inner cavity of the air intake box (1), support plates (3) are fixed at both the left and right ends between the opposite sides of the two air intake boxes (1), an adjustment mechanism (4) is provided on the inner bottom wall of the left support plate (3), two air intake holes (5) are provided on the upper surface of the upper air intake box (1) and the lower surface of the lower air intake box (1), and the inner cavity of the air intake hole (5) is provided with a dust filtering mechanism (6) for preventing dust from entering the inner cavity of the air intake box (1); The adjustment mechanism (4) comprises a motor (401) fixed to the inner bottom wall of the left end support plate (3), the output shaft of the motor (401) is fixed with a threaded rod (402), a sliding rod (403) is fixed between the inner top wall and the inner bottom wall of the right end support plate (3) on the opposite side, a movable plate (404) is provided between the opposite sides of the two support plates (3), the left and right ends of the movable plate (404) both penetrate the support plate (3) and extend to the inner cavity of the support plate (3), the movable plate (404) is threadedly connected to the threaded rod (402), the movable plate (404) is slidably connected to the sliding rod (403), and a limiting strip (405) is fixed to the inner walls of the opposite sides of the two support plates (3).

2. The PCB tin-spraying plate cooling device according to claim 1, characterized in that: A plurality of air outlet holes are provided on one side opposite to the two air intake boxes (1), and the plurality of air outlet holes are evenly distributed on one side opposite to the two air intake boxes (1). Support seats are fixed on both left and right ends of the lower surface of the lower air intake box (1).

3. The PCB tin-spraying plate cooling device according to claim 1, characterized in that: A plurality of driven rollers are evenly fixed on the upper surface of the lower air intake box (1), a plurality of compression springs are fixed on the lower surface of the upper air intake box (1), a driving roller is fixed on the lower surface of the compression spring, and a motor is fixed on the front side of the driving roller.

4. The PCB tin-spraying plate cooling device according to claim 1, characterized in that: The upper surface of the threaded rod (402) is rotatably connected to the inner top wall of the left end support plate (3) via a bearing, and the left and right ends of the movable plate (404) both perform up and down linear motion in the inner cavity of the limit strip (405).

5. The PCB tin-spraying plate cooling device according to claim 1, characterized in that: The ash filtering mechanism (6) comprises a filter screen (601) arranged in the inner cavity of the air inlet hole (5), and the filter screen (601) is provided with a limit groove (602) on both sides, and two cavities (603) are provided on both sides of the left and right ends of the inner top wall of the upper air inlet box (1) and the left and right ends of the inner bottom wall of the lower air inlet box (1), and telescopic rods (604) are fixed on opposite sides of the two cavities (603), and the outer surface of the telescopic rod (604) is movably sleeved with a return spring (605), and movable plates (606) are fixed on opposite sides of the two telescopic rods (604), and limit blocks (607) are fixed on opposite sides of the two movable plates (606).

6. The PCB tin-spraying plate cooling device according to claim 5, characterized in that: The size of the filter screen (601) is matched to the size of the inner cavity of the air inlet hole (5), and the size of the limiting block (607) is matched to the size of the limiting groove (602).

7. The PCB tin-spraying board cooling device according to claim 5, characterized in that: The opposite sides of the two limit blocks (607) penetrate the cavity (603) and extend to the inner cavity of the air inlet (5), and the two ends of the return spring (605) are respectively fixedly connected between the opposite sides of the cavity (603) and the movable plate (606).

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