Power module PCBA assembling and welding tool capable of achieving rapid positioning and collimation

Abstract

The utility model discloses a power module PCBA assembling and welding tool capable of achieving rapid positioning and collimation. The power module PCBA assembling and welding tool comprises a base, a supporting plate and a fixing plate. Two hollow cavities are formed in the middle of the base, the two ends of the narrow side of each cavity are each provided with a platform, and each platform is provided with three vertical through holes; two hollows in one-to-one correspondence with the two cavities of the base are formed in the middle of the supporting plate, the size of the hollows is the same as that of the cavities of the base, and two protrusions are arranged on each of the two opposite sides of the hollows; the middle of the fixing plate is also provided with two hollowed-out structures, each hollowed-out structure is composed of an upper-layer hole with the large hollowed-out area and a lower-layer hole with the small hollowed-out area, the upper-layer holes are larger than the PCBA to be welded in size, and the lower-layer holes are the same as the hollowed-out structures of the supporting plate in size. According to the tool structure, the power module PCBA can be quickly positioned and collimated during assembly and welding, the structure is easy to implement, the cost is low, the application range is wide, and the welding quality and efficiency of the power module PCBA are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power module assembly and welding, and in particular relates to a power module PCBA assembly and welding tool for rapid positioning and alignment. Background Art

[0002] During the assembly and welding process of the power module, a fixture is required to position and fix the PCBA board and the lead pins to ensure that the PCBA board and the lead pin positions do not shift and ensure the stability of welding. When using the bare PCB board as the existing welding fixture, the PCBA and the lead pins to be welded are not accurately positioned and offset, and the lead pins cannot be vertical. The PCBA and the lead pins are in an active state and the operator needs to use his hands to assist in pressing the PCBA to be welded. The PCBA and the lead pins need to be adjusted many times during the welding process, and the welding quality is unstable, which consumes a lot of man-hours and has low work efficiency.

[0003] From the above, it is urgent to design an improved and innovative solution that can solve the above problems. Summary of the invention

[0004] Based on the above description, the utility model provides a power module PCBA assembly welding tool with rapid positioning and alignment to solve the shortcomings of power module PCBA assembly welding, such as difficult positioning and alignment, slow welding speed, and low welding quality.

[0005] The utility model solves the above-mentioned assembly welding problem as follows:

[0006] A power module PCBA assembly welding tool for rapid positioning and alignment, comprising a base, and also comprising a support plate and a fixing plate which are detachably fixed on the top of the base from bottom to top; wherein two hollow cavities are provided in the middle of the base, and a platform is provided at each end of the narrow side of the cavity, and each platform has three vertical through holes;

[0007] The middle part of the support plate is provided with two hollows corresponding to the two cavities of the base, the size of the hollow is the same as the hollow of the base, and there are two protrusions on the two opposite sides of the hollow;

[0008] The middle part of the fixing plate is also provided with two hollow structures, which are composed of an upper hole with a larger hollow area and a lower hole with a smaller hollow area. The upper hole is larger than the PCBA board to be welded, and the size of the lower hole is the same as the hollow of the support plate.

[0009] Furthermore, the upper hole is 0.15 to 0.2 mm larger than the size of the PCBA board to be welded.

[0010] Furthermore, two semicircular holes are symmetrically opened in the middle of the two long sides of the lower hole.

[0011] Furthermore, a plurality of screw holes are respectively provided at the same positions on the fixing plate, the supporting plate and the base, and the screw holes on the fixing plate, the supporting plate and the base at the same vertical position are fixed by screws, thereby fixing the fixing plate and the supporting plate together on the base.

[0012] Furthermore, the number of screw holes on the fixing plate, the supporting plate and the base is 9 respectively.

[0013] Furthermore, the screw is a cross round head screw.

[0014] Furthermore, the base (1) has an outer size of 80×60×20 mm, the support plate (2) has an outer size of 80×60×1 mm, and the fixing plate (3) has an outer size of 80×60×3 mm.

[0015] Compared with the existing PCB bare board tooling, the beneficial effects of the utility model are as follows:

[0016] 1. In the PCBA assembly welding tooling of the power module, a base is used to ensure the verticality of the PCBA pins to be welded and to achieve structural support for the entire tooling. A support plate is used to ensure the horizontal support of the PCBA to be welded. A fixed plate is used to ensure that the PCBA board is immobile and can be accurately positioned under the support of the support plate.

[0017] 2. When using the tooling of the utility model for welding, the PCBA board is placed in the fixed plate 3 and the PCBA is supported horizontally by the protruding support position of the support plate. Then, the welding pins are inserted from the through holes of the PCBA to be welded through the 6 positioning holes on the base to vertically position the pins. The power module PCBA welding tooling sleeve realizes the simple placement and removal of the welded power module PCBA and the welding tooling, reduces the operation error and difficulty, ensures the consistency of product welding, and makes the quality controllable; at the same time, simplifies the welding steps of the power module PCBA pins, thereby improving the production efficiency of the power module PCBA.

[0018] 3. The base, support plate and fixing plate are detachably fixed by 9 round head screws, so that the tooling of the utility model is easy to disassemble and install, and the structure is easy to realize.

[0019] 4. The tooling structure of the utility model is easy to implement, low in cost, durable, and not easy to wear out. It can realize rapid positioning and alignment of PCBA assembly welding of power modules, has a wide range of applications, and greatly improves the quality and efficiency of PCBA welding of power modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the assembly structure of a power module PCBA assembly welding tooling for rapid positioning and alignment provided by an embodiment of the utility model;

[0021] Figure 2 An exploded schematic diagram of a power module PCBA assembly welding tooling for rapid positioning and alignment provided by an embodiment of the utility model;

[0022] The meaning of the symbols in the figure:

[0023] 1—base; 2—support plate; 3-fixing plate; 1-1—cavity; 2-1—hollowing; 2-2—protrusion; 3-1—hollowing structure. DETAILED DESCRIPTION

[0024] To facilitate understanding of the present application, the present application will be described more comprehensively below with reference to the accompanying drawings.

[0025] The utility model provides a power module PCBA assembly welding tool for rapid positioning and alignment, comprising a base 1, a support plate 2 and a fixing plate 3 that can be detachably fixed from bottom to top. Among them, two hollow cavities 1-1 are provided in the middle of the base 1, and a platform is provided at each end of the narrow side of the cavity 1-1, and each platform has three vertical through holes. The base 1 has two functions: one is to serve as a supporting structure for the entire tool, and the other is to serve as a vertical alignment mechanism for the lead pin insertion hole, and the cavity 1-1 is used to place the lead pin.

[0026] The middle of the support plate 2 is provided with two hollows 2-1 corresponding to the two cavities 1-1 of the base 1. The hollows 2-1 are the same size as the cavities 1-1 of the base 1 and there are two protrusions 2-2 on opposite sides of the hollows 2-1. The support plate 2 is placed closely above the base to support the PCBA board with components. The protrusions 2-2 are provided to support the board surface of the PCBA board without components.

[0027] Two hollow structures 3-1 are also provided in the middle of the fixing plate 3. The hollow structure 3-1 consists of an upper hole with a larger hollow area and a lower hole with a smaller hollow area. The upper hole is a lowering hole made to keep the lower hole at the same height as the PCBA board thickness; the size of the lower hole is the same as the hollow 2-1 of the support plate 2, and the upper hole is 0.15 to 0.2 mm larger than the size of the PCBA board to be welded, ensuring that the PCBA will not shake left and right on the fixing plate, and is used to accurately limit the position of the PCBA board. Preferably, two semicircular holes are symmetrically opened in the middle of the two long sides of the lower hole to facilitate the removal and placement of the PCBA.

[0028] A plurality of screw holes are respectively provided at the same positions on the fixing plate 3, the supporting plate 2 and the base 1. The screw holes on the fixing plate 3, the supporting plate 2 and the base 1 at the same vertical position are fixed by screws, so that the fixing plate 3 and the supporting plate 2 are fixed together on the base 1; preferably, the number of the screw holes is 9.

[0029] The operation process of welding PCBA using the fast positioning and alignment power module PCBA assembly welding tool of the utility model is as follows:

[0030] Take the PCBA board of the corresponding model to be welded and place the corresponding side in the support and limiting structure composed of the support plate 2 and the fixed plate 3 to support and position the PCBA board. Then take the corresponding model power module lead pins and insert them into the 6 lead pin holes on the PCBA and pass through the 6 positioning holes of the base 1 to align the lead pins. At this point, the positioning and alignment of the PCBA and the power module lead pins are completed. Then use an electric soldering iron to perform welding. After welding, take it out to complete the operation.

[0031] The utility model has a simple structure and improves the operation efficiency and the stability of welding quality by using the tooling.

[0032] In this utility model, the parts are made of the following materials and specifications are as follows:

[0033] Base 1, material: FR-4 glass fiber board, appearance specification: 80×60×20mm.

[0034] Support plate 2, material: 3240 epoxy board, shape specification: 80×60×1mm.

[0035] Fixed plate 3, material: FR-4 glass fiber board, appearance specification: 80×60×3mm.

[0036] Screw, material: 304 stainless steel cross round head screw, specification: M2.5×8mm.

[0037] When the six pin size structure spacings of the power module PCBA are consistent with the assembly welding size structure spacings of the power module PCBA of the utility model, the welding tool of the utility model can be used to quickly position and align the power module PCBA to be welded.

[0038] All technologies and terms used in the present invention have the same meanings as those commonly understood by technicians in the technical field of the present application. The terms used in the present invention and in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0039] Although the preferred embodiments of the utility model are described, those skilled in the art may make other changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power module PCBA assembly welding tool for rapid positioning and alignment, comprising a base (1), characterized in that: It also includes a support plate (2) and a fixing plate (3) which are detachably fixed on the top of the base (1) in sequence from bottom to top; wherein the base (1) is provided with two hollow cavities (1-1) in the middle, and each of the two ends of the narrow side of the cavity (1-1) is provided with a platform, and each platform has three vertical through holes; The support plate (2) is provided with two hollows (2-1) in the middle thereof, which correspond one to one with the two cavities (1-1) of the base (1); the hollows (2-1) are the same size as the cavities (1-1) of the base (1), and two opposite sides of the hollows (2-1) are provided with two protrusions (2-2); The fixing plate (3) is also provided with two hollow structures (3-1) in the middle, and the hollow structure (3-1) is composed of an upper hole with a larger hollow area and a lower hole with a smaller hollow area. The upper hole is larger than the size of the PCBA board to be welded, and the size of the lower hole is the same as the hollow (2-1) of the support plate (2).

2. The power module PCBA assembly welding tool for rapid positioning and alignment according to claim 1 is characterized in that: The upper hole is 0.15 to 0.2 mm larger than the size of the PCBA board to be welded.

3. The power module PCBA assembly welding tool for rapid positioning and alignment according to claim 1 is characterized in that: Two semicircular holes are symmetrically arranged in the middle of the two long sides of the lower hole.

4. The fast positioning and alignment power module PCBA assembly welding tool as described in any one of claims 1 to 3, characterized in that: A plurality of screw holes are respectively provided at the same positions on the fixing plate (3), the supporting plate (2) and the base (1); the screw holes on the fixing plate (3), the supporting plate (2) and the base (1) at the same vertical position are fixed by screws, thereby fixing the fixing plate (3) and the supporting plate (2) together on the base (1).

5. The power module PCBA assembly welding tool for rapid positioning and alignment according to any one of claims 1 to 3, characterized in that: The number of screw holes on the fixing plate (3), the supporting plate (2) and the base (1) is 9 respectively.

6. The power module PCBA assembly welding tool for rapid positioning and alignment as claimed in claim 4, characterized in that: The screw is a cross round head screw.

7. The power module PCBA assembly welding tool for rapid positioning and alignment according to any one of claims 1 to 3, characterized in that: The base (1) has an external specification of 80×60×20 mm, the support plate (2) has an external specification of 80×60×1 mm, and the fixing plate (3) has an external specification of 80×60×3 mm.

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