Scratch-proof tin-spraying hanging clamp for high-thermal-conductivity metal-based power module PCB (printed circuit board)

Abstract

The utility model relates to an anti-scratch tin-spraying material hanging clamp for a high-thermal-conductivity metal-based power supply module PCB (printed circuit board), which belongs to the field of PCB tin spraying and comprises a transverse frame, a material hanging assembly for clamping the PCB in an anti-scratch manner is arranged on the front surface of the transverse frame, and a driving assembly for driving the material hanging assembly to clamp and hang materials is arranged on the upper surface of the transverse frame. According to the anti-scratch tin-spraying material hanging clamp for the high-thermal-conductivity metal-based power supply module PCB, the material hanging assembly realizes stable and safe clamping of the PCB, and a traditional PIN hanging mode is canceled, so that PCB damage and production efficiency reduction caused by a hole hanging problem are avoided, and the product quality is improved. The limiting plate and the fixed clamping plate are matched with the rotating frame and the rotating clamping plate so that the material hanging assembly can adapt to PCBs of different sizes, in addition, due to the design of the pressing plate clamp, clamping is stable, physical damage to the PCBs is further reduced through the use of the insulating sleeve gasket, the clamping requirement is met only through the 5 mm plate edge, and material waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board tin spraying, in particular to an anti-scratch tin spraying material clip for a PCB board of a high thermal conductivity metal-based power module. Background Art

[0002] The tin-spraying process is to add an anti-oxidation layer to the welding surface of the circuit board. The vertical tin-spraying line hangs the high thermal conductivity metal-based power module PCB board that needs tin-spraying on the pin hanging hole for tin-spraying treatment. The high thermal conductivity metal-based power module PCB tin-spraying board needs to drill a 3.175mm hanging hole when drilling, so that the hanging board can be tin-sprayed during tin-spraying.

[0003] As disclosed in the Chinese patent announcement number (CN202127552U), a fixture technology field for PCB finished small board tin spraying operation is disclosed. The reference bar 1 is adjusted to the required position through the reference bar slide rail 2 and locked with the reference bar fixing lock 3. The titanium bar 4 clamps the board to be produced through the titanium bar slide rail 6 and is locked with the titanium bar fixing lock 5. Then, the PCB finished small board tin spraying fixture is fixed on the tin spraying machine through the fixture positioning hole 7. Finally, the vertical tin spraying can be fixed. The inner horizontal edge of the top of the titanium frame is set to a serrated shape, the inner horizontal edge of the reference bar 1 is set to a serrated shape, and the inner edge of the titanium bar 4 is set to a serrated shape. The PCB finished small board tin spraying fixture provided by the utility model will not cause damage to the finished small board, tin accumulation on the edge pad of the board, and strain on the positioning holes in the board and other quality problems.

[0004] However, in the prior art such as the above-mentioned patent, there are still problems such as missing drilling and small holes in the tin-spraying hanging holes of the high thermal conductivity metal-based power module PCB, which will lead to the inability to use the hanging holes normally during tin-spraying. The pressing pieces on the hanging holes also have the risk of scratching the inside of the board. If the hanging holes are too large, the board will be damaged and delaminated into the unit during the tin-spraying and pulling process, and there is a lack of effective process control capabilities. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides an anti-scratch tin-spraying hanging clip for a high thermal conductivity metal-based power module PCB board, which has the advantages of anti-scratch tin-spraying hanging, etc., and solves the problems of drilling leakage and small holes of the tin-spraying hanging holes of the high thermal conductivity metal-based power module PCB in the prior art, which may lead to the inability to use the hanging holes normally during tin-spraying production, and the pressure sheet on the hanging hole also has the risk of scratching the inside of the board. If the hanging hole is too large, it will cause the board to be damaged and delaminated into the unit during the tin-spraying pulling process and be scrapped, and there is no effective process control capability.

[0006] To achieve the above object, the present utility model provides the following technical solution: A scratch-proof tin spraying hanging clip for a high thermal conductivity metal-based power module PCB board, including a horizontal frame, a hanging component for scratch-proof clamping of the PCB board is provided on the front surface of the horizontal frame, and a driving component for driving the hanging component to clamp the hanging material is provided on the upper surface of the horizontal frame;

[0007] The hanging component includes three limiting plates fixedly distributed at intervals on the front surface of the horizontal frame. Two fixed clamping plates are fixed on the front surface of the horizontal frame, and the two fixed clamping plates are respectively located between the opposite sides of adjacent two limiting plates. Connecting holes penetrating from the left side to the right side are opened on the left sides of the three limiting plates. A support rod is fixed on the inner wall of the three connecting holes. Two rotating frames located between the opposite sides of adjacent two limiting plates are rotatably connected to the outer side of the support rod. Rotating clamping plates are fixed on the front surfaces of the two rotating frames. Pressing plate clips are fixed at the bottom ends of the rotating clamping plates and the fixed clamping plates;

[0008] The driving component includes two vertical plates fixed on the upper surface of the horizontal frame. A support plate is horizontally fixed between the opposite sides of the two vertical plates. A cylinder is fixed on the front surface of the support plate. A synchronous push plate is fixed on the back surface of the two rotating clamping plates. A bracket is fixed on the back surface of the synchronous push plate. A connecting rod is rotatably connected between the inner walls on the left and right sides of the bracket through a bearing. The outer side of the output shaft of the cylinder is fixed to the connecting rod.

[0009] Further, insulating sleeve pads are fixed on the opposite sides of the pressing plate clips on the front and rear sides, and the length of the pressing plate clip is greater than the width of the rotating clamping plate.

[0010] Further, a plate edge is clamped between the opposite sides of the pressing plate clips on the front and rear sides, and a PCB board is fixed below the plate edge.

[0011] Further, the length of the fixed clamping plate is equal to the length of the limiting plate, and the length of the rotating clamping plate is greater than the length of the fixed clamping plate.

[0012] Further, a sleeve is fixed on the outer side of the output shaft of the cylinder, and the output shaft of the cylinder is sleeved on the outer side of the connecting rod through the sleeve.

[0013] Further, the width of the rotating clamping plate is equal to the distance between the opposite sides of the two adjacent limiting plates.

[0014] Further, a rotating hole is opened on the outer side of the rotating frame, and the rotating frame is rotatably connected to the outer side of the support rod through the rotating hole.

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0016] 1. The anti-scratch solder spraying hanging clip for the high thermal conductivity metal-based power module PCB board. The hanging component realizes stable and safe clamping of the PCB board, cancels the traditional pin hanging method, thus avoiding damage to the PCB board caused by hanging hole problems and reducing production efficiency. The limiting plate and the fixed clamping plate cooperate with the rotating frame and the rotating clamping plate to enable the hanging component to adapt to PCB boards of different sizes. In addition, the design of the pressing plate clip not only has stable clamping, but also further reduces physical damage to the PCB board through the use of insulating sleeve pads, and only uses a 5-mm board edge to meet the clamping requirements, reducing material waste.

[0017] 2. The anti-scratch solder spraying hanging clip for the high thermal conductivity metal-based power module PCB board. The driving component provides efficient and precise power output through the ingenious cooperation of the cylinder and the connecting rod. The design of the synchronous push plate enables the two rotating clamping plates to act synchronously, ensuring the consistency and uniformity of the clamping of the PCB board. This automated driving method not only reduces the need for manual operation, reduces labor intensity, but also improves the accuracy and repeatability of the clamping action, thereby improving production efficiency and product quality. The driving component realizes precise control of the clamping action during the solder spraying process of the PCB board, providing strong support for improving the level of production automation and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the present utility model;

[0019] Figure 2 It is a schematic diagram of the hanging component of the present utility model;

[0020] Figure 3 It is a side view of the hanging component of the present utility model;

[0021] Figure 4 It is a partial schematic diagram of the hanging component of the present utility model;

[0022] Figure 5 It is a schematic diagram of the driving component of the present utility model;

[0023] Figure 6 It is a side view of the driving component of the present utility model.

[0024] In the figure: 1 cross frame, 2 hanging component, 21 limiting plate, 22 fixed clamping plate, 23 connecting hole, 24 support rod, 25 rotating frame, 26 rotating clamping plate, 27 pressing plate clip, 3 driving component, 31 vertical plate, 32 support plate, 33 cylinder, 34 synchronous push plate, 35 bracket, 36 connecting rod. DETAILED DESCRIPTION OF THE INVENTION

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1 , a scratch-proof tin spraying hanging clip for a high thermal conductivity metal-based power module PCB board in this embodiment, includes a cross frame 1. A hanging component 2 for scratch-proof clamping of the PCB board is provided on the front surface of the cross frame 1, and a driving component 3 for driving the hanging component 2 to clamp and hang materials is provided on the upper surface of the cross frame 1.

[0027] Please refer to Figures 2 to 4 , in order to scratch-proof clamp the PCB board, the hanging component 2 in this embodiment includes three limiting plates 21 fixedly distributed at intervals on the front surface of the cross frame 1. It is necessary to prepare the high thermal conductivity metal-based power module PCB board to be sprayed with tin, install the scratch-proof tin spraying hanging clip at the corresponding position of the tin spraying machine, and ensure that they can correctly position the PCB board by adjusting the limiting plates 21 and the fixed clamping plates 22 on the cross frame 1. Two fixed clamping plates 22 are fixed on the front surface of the cross frame 1, and the two fixed clamping plates 22 are respectively located between the opposite sides of two adjacent limiting plates 21. Connecting holes 23 penetrating from the left side to the right side are opened on the left sides of the three limiting plates 21. A support rod 24 is fixed on the inner wall of the three connecting holes 23. Two rotating frames 25 located between the opposite sides of two adjacent limiting plates 21 are rotatably connected to the outer side of the support rod 24. Rotating clamping plates 26 are fixed on the front surfaces of the two rotating frames 25. Place the PCB board between the fixed clamping plates 22 and the rotating clamping plates 26 of the hanging component 2 to ensure that the board edge is correctly clamped by the pressing plate clamp 27. Pressing plate clamps 27 are fixed at the bottom ends of the rotating clamping plates 26 and the fixed clamping plates 22.

[0028] In this embodiment, insulating sleeve pads are fixed on the opposite sides of the front and rear pressing plate clamps 27, and the length of the pressing plate clamp 27 is greater than the width of the rotating clamping plate 26. The board edge is clamped between the opposite sides of the front and rear pressing plate clamps 27, and a PCB board is fixed below the board edge. The length of the fixed clamping plate 22 is equal to the length of the limiting plate 21, and the length of the rotating clamping plate 26 is greater than the length of the fixed clamping plate 22. The connecting rod 36 pushes the synchronous push plate 34, and then makes the rotating clamping plate 26 move towards the fixed clamping plate 22 to realize the clamping of the PCB board.

[0029] In this embodiment, the width of the rotating clamping plate 26 is equal to the distance between the opposite sides of two adjacent limiting plates 21. A rotating hole is formed on the outer side of the rotating frame 25, and the rotating frame 25 is rotatably connected to the outer side of the support rod 24 through the rotating hole. The design of the pressure plate clamp 27 not only provides stable clamping, but also further reduces physical damage to the PCB board through the use of insulating sleeve pads, improving the safety of operation.

[0030] Please refer to Figures 5 to 6 , in order to drive the hanging component 2 to hold the hanging material, the driving component 3 in this embodiment includes two vertical plates 31 fixed on the upper surface of the cross frame 1. A support plate 32 is horizontally fixed between the opposite sides of the two vertical plates 31. A cylinder 33 is fixed on the front surface of the support plate 32. A synchronous push plate 34 is fixed on the back surface of the two rotating clamping plates 26. A bracket 35 is fixed on the back surface of the synchronous push plate 34. A connecting rod 36 is rotatably connected between the inner walls on the left and right sides of the bracket 35 through bearings. The outer side of the output shaft of the cylinder 33 is fixed to the connecting rod 36. By operating the cylinder 33 in the driving component 3, the connecting rod 36 is pushed to drive the synchronous push plate 34, and then the rotating clamping plate 26 moves towards the fixed clamping plate 22 to clamp the PCB board.

[0031] In this embodiment, a sleeve is fixed on the outer side of the output shaft of the cylinder 33, and the output shaft of the cylinder 33 is sleeved on the outer side of the connecting rod 36 through the sleeve. After the PCB board is firmly clamped, the soldering machine is started for soldering operation. After soldering is completed, the connecting rod 36 is released by operating the cylinder 33, so that the synchronous push plate 34 drives the rotating clamping plate 26 to move away from the fixed clamping plate 22, releasing the PCB board. The soldered PCB board is taken out from the hanging clip and subsequent inspection and processing are carried out.

[0032] The working principle of the above embodiment is as follows:

[0033] First, the high thermal conductivity metal base power module PCB board to be soldered needs to be prepared, and the anti-scratch soldering hanging clip is installed at the corresponding position of the soldering machine. By adjusting the limiting plates 21 and the fixed clamping plate 22 on the cross frame 1, it is ensured that they can correctly position the PCB board. The PCB board is placed between the fixed clamping plate 22 and the rotating clamping plate 26 of the hanging component 2, and it is ensured that the board edge is correctly clamped by the pressure plate clamp 27. By operating the cylinder 33 in the driving component 3, the connecting rod 36 is pushed to drive the synchronous push plate 34, and then the rotating clamping plate 26 moves towards the fixed clamping plate 22 to clamp the PCB board. After the PCB board is firmly clamped, the soldering machine is started for soldering operation. After soldering is completed, the connecting rod 36 is released by operating the cylinder 33, so that the synchronous push plate 34 drives the rotating clamping plate 26 to move away from the fixed clamping plate 22, releasing the PCB board. The soldered PCB board is taken out from the hanging clip and subsequent inspection and processing are carried out.

[0034] It should be noted that in this text, 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 actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0035] The standard parts used in this application document can all be purchased from the market, and can also be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common general knowledge in the art. Therefore, the control method and circuit connection will not be explained in detail in this application document.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model.

Claims

1. A scratch-resistant tin-spraying material clip for a high thermal conductivity metal-based power module PCB board, comprising a horizontal frame (1), characterized in that: The front side of the cross frame (1) is provided with a material hanging component (2) for clamping the PCB board in a scratch-proof manner, and the upper surface of the cross frame (1) is provided with a driving component (3) for driving the material hanging component (2) to clamp the material hanging; The hanging material assembly (2) comprises three limit plates (21) fixed at intervals on the front side of the cross frame (1); two fixed clamping plates (22) are fixed on the front side of the cross frame (1), and the two fixed clamping plates (22) are respectively located between the opposite sides of two adjacent limit plates (21); the left sides of the three limit plates (21) are each provided with a connecting hole (23) extending to the right side; the inner walls of the three connecting holes (23) are fixed with a supporting rod (24); the outer sides of the supporting rod (24) are rotatably connected with two rotating frames (25) located between the opposite sides of two adjacent limit plates (21); the front sides of the two rotating frames (25) are each fixed with a rotating clamping plate (26); the bottom ends of the rotating clamping plate (26) and the fixed clamping plate (22) are each fixed with a pressure plate clamp (27); The driving assembly (3) comprises two vertical plates (31) fixed on the upper surface of the horizontal frame (1), a support plate (32) is horizontally fixed between opposite sides of the two vertical plates (31), a cylinder (33) is fixed on the front side of the support plate (32), a synchronous push plate (34) is fixed on the back side of the two rotating clamping plates (26), a bracket (35) is fixed on the back side of the synchronous push plate (34), and a connecting rod (36) is rotatably connected between the inner walls on the left and right sides of the bracket (35) through a bearing, and the outer side of the output shaft of the cylinder (33) is fixed to the connecting rod (36).

2. The anti-scratch tin-spraying material clip for a high thermal conductivity metal-based power module PCB board according to claim 1, characterized in that: Insulating sleeve pads are fixed to opposite sides of the pressure plate clamps (27) at the front and rear sides, and the length of the pressure plate clamps (27) is greater than the width of the rotating clamp (26).

3. The anti-scratch tin-spraying hanging clip for a high thermal conductivity metal-based power module PCB board according to claim 1, characterized in that: A board edge is clamped between opposite sides of the pressure plate clamps (27) at the front and rear sides, and a PCB board is fixed below the board edge.

4. The anti-scratch tin-spraying hanging clip for a high thermal conductivity metal-based power module PCB board according to claim 1, characterized in that: The length of the fixed clamping plate (22) is equal to the length of the limiting plate (21), and the length of the rotating clamping plate (26) is greater than the length of the fixed clamping plate (22).

5. The anti-scratch tin-spraying material clip for a high thermal conductivity metal-based power module PCB board according to claim 1, characterized in that: A sleeve is fixed on the outer side of the output shaft of the cylinder (33), and the output shaft of the cylinder (33) is sleeved on the outer side of the connecting rod (36) through the sleeve.

6. The anti-scratch tin-spraying material clip for a high thermal conductivity metal-based power module PCB board according to claim 1, characterized in that: The width of the rotating clamping plate (26) is equal to the distance between opposite sides of two connected limiting plates (21).

7. The anti-scratch tin-spraying material clip for a high thermal conductivity metal-based power module PCB board according to claim 1, characterized in that: A rotating hole is provided on the outer side of the rotating frame (25), and the rotating frame (25) is rotatably connected to the outer side of the supporting rod (24) through the rotating hole.

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