Welding spot detection device for PCB patch welding

Abstract

The utility model relates to the field of PCB (Printed Circuit Board) welding spot detection, in particular to a welding spot detection device for PCB patch welding, which can simplify the structure, detect the welding spots of the PCB manually, reduce the detection cost, improve the accuracy and effectively solve the problems in the background technology. Comprising a base, the base is in a flat cuboid shape, and a circuit board fixing structure is arranged on the upper surface of the base; a cover body is detachably arranged on the base, the cover body is in a cuboid shape with a lower opening, an observation window is fixedly arranged at the top of the cover body, and a welding spot detection assembly is arranged on the cover body around the observation window; the inner surface of the bottom of the cover body is in friction fit with the outer side face of the boss. The device is easy to operate, convenient to use and suitable for circuit boards of various specifications.

Description

Technical Field

[0001] The utility model relates to the field of PCB board solder joint detection, in particular to a solder joint detection device for PCB board patch welding. Background Technique

[0002] The PCB solder joint is a key part connecting electronic components and the PCB board. The quality of the solder joint directly affects the reliability and stability of the circuit board. A good solder joint can provide a firm connection, ensure smooth signal transmission and current transfer. During the PCB solder joint welding process, problems such as missed soldering and de-soldering may occur, resulting in unqualified circuit board quality. Therefore, it is necessary to detect the solder joints of the circuit board. The Chinese invention patent with the application number 202211613139.4 discloses a mechanical strength detection device for printed circuit board patch solder joints. The detection mechanism includes a power component connected to a lifting component, a reciprocating structure connected to the power component, and a plurality of detection rods rotatably installed on the reciprocating structure. The detection rods are connected to the reciprocating structure through elastic sheets; when the lifting component drives the bearing plate to rise, the end of the detection rod far from its rotation center abuts against the upper surface of the printed circuit board placed on the bearing plate to achieve rapid detection.

[0003] The above detection device can play the role of detecting and fixing the circuit board. However, its fixing and detection mechanisms are relatively complex, the operation is relatively troublesome, it is not conducive to reducing the detection cost, and there is also the problem of inaccurate detection. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a solder joint detection device for PCB board patch welding. The device can simplify the structure, detect the solder joints of the PCB board manually, reduce the detection cost, improve the accuracy, and effectively solve the problems raised in the background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: A solder joint detection device for PCB board patch welding, including a base, the base is in the shape of a flat cuboid, and a circuit board fixing structure is provided on the upper surface of the base;

[0006] A cover body is detachably provided on the base, the cover body is in the shape of a cuboid with an open bottom, an observation window is fixedly provided on the top of the cover body, and a solder joint detection component is provided on the cover body around the observation window.

[0007] As a preferred technical solution, a circle of convex platforms is fixedly provided on the edge of the upper surface of the base, and the inner surface of the bottom of the cover body is in frictional fit with the outer side surface of the convex platform.

[0008] As a preferred technical solution, the circuit board fixing structure includes two groups on the left and right. Each group includes a pushing component arranged outward from the middle position on the upper surface of the base. The pushing component includes a fixed block. Bolts are screwed from the inside to the outside on the fixed block. The outer ends of the bolts are respectively rotationally riveted with top blocks. Rubber top plates are respectively fixed to the outer ends of the top blocks. A clamping groove for cooperating with the circuit board is provided at the bottom of the convex platform on the outer side of the rubber top plate.

[0009] As a preferred technical solution, the observation window includes a first through hole that is circular and embedded in the top plate of the cover body. A first fixing ring is adhesively provided in the first through hole, and a convex lens is fixed in the first fixing ring.

[0010] As a preferred technical solution, the solder joint detection component includes a second through hole that is circular and embedded in the top plate of the cover body. A second fixing ring is adhesively provided in the second through hole. A circular silica gel pad is fixed in the second fixing ring. A circular through hole is provided at the center position of the silica gel pad. A vertical rod is slidably squeezed in the circular through hole. A collar is slidably sleeved on the vertical rod above the circular through hole in a damping manner. A rubber ball is fixed to the top of the vertical rod, and a conical rubber head is provided at the bottom of the vertical rod.

[0011] As a preferred technical solution, first handles are respectively fixed at the center positions on the left and right outer sides of the cover body.

[0012] As a preferred technical solution, a rectangular through hole is embedded in the front side of the cover body. A transparent acrylic plate is embedded at the rectangular through hole. The bottom of the acrylic plate is hinged to the base through a hinge shaft. A first magnetic block is fixed to the top of the acrylic plate. A rectangular groove is embedded in the cover body above the rectangular through hole. A second magnetic block that attracts and cooperates with the first magnetic block is adhesively fixed in the rectangular groove.

[0013] As a preferred technical solution, a second handle is fixed to the outer side of the acrylic plate.

[0014] Compared with the prior art, the present utility model provides a solder joint detection device for PCB board patch welding, and has the following beneficial effects:

[0015] 1. In the present utility model, the pushing component includes a fixed block. Bolts are screwed from the inside to the outside on the fixed block. The outer ends of the bolts are respectively rotationally riveted with top blocks. Rubber top plates are respectively fixed to the outer ends of the top blocks. A clamping groove for cooperating with the circuit board is provided at the bottom of the convex platform on the outer side of the rubber top plate. During use, the circuit board can be placed between the rubber top plate and the clamping groove, and the outer end portion is clamped into the clamping groove. Then, by screwing the bolts outward, the rubber top plate can push and clamp the circuit board, facilitating subsequent detection.

[0016] 2. The utility model includes a first circular through hole embedded in the top plate of the cover body through the observation window, a first fixing ring is bonded in the first through hole, a convex lens is fixed in the first fixing ring, when in use, the cover body is covered, and the staff can observe the electronic components of the circuit board through the convex lens, and the convex lens has a magnifying effect, which is conducive to the staff to observe the electronic components more clearly.

[0017] 3. The utility model fixes a circular silicone pad in the second fixing ring, a circular through hole is provided at the center of the silicone pad, a vertical rod is provided in the circular through hole for contact and sliding, a collar is provided on the vertical rod on the upper side of the circular through hole for damping sliding, a rubber ball is fixed on the top of the vertical rod, and a conical rubber head is provided at the bottom of the vertical rod. When in use, a staff member can hold the rubber ball on the top and swing the vertical rod, so that the rubber head at the bottom moves the electronic component. If the electronic component is loose, it proves that it is desoldering, and the cover can be removed for further inspection. Manual inspection can improve the accuracy of inspection. When not in use, the collar can be slid down to play a limiting role on the upper side of the silicone pad, so that the rubber head is located above the circuit board to avoid squeezing the circuit board.

[0018] 4. The utility model is hinged to the base through a hinge shaft at the bottom of the acrylic plate, a first magnetic block is fixedly provided on the top of the acrylic plate, a rectangular groove is embedded on the cover body on the upper side of the rectangular through hole, and a second magnetic block that attracts and cooperates with the first magnetic block is fixedly provided in the rectangular groove. When in use, the transparent acrylic plate can be used to assist the soldering point detection component in observing the welding condition of the internal circuit board, and the circuit board can also be taken and placed from the side. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model;

[0021] Figure 2 is an enlarged structural schematic diagram of the base;

[0022] Figure 3 It is an enlarged structural schematic diagram of the push assembly;

[0023] Figure 4 It is a schematic diagram of the enlarged structure of the solder joint detection component;

[0024] Figure 5 It is an enlarged structural schematic diagram of the cooperation between the first fixing ring and the silicone pad;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the second embodiment of the utility model.

[0026] Indications in the figure: 1. Base; 11. Boss; 2. Thrust component; 21. Fixed seat; 22. Bolt; 23. Top block; 24. Rubber top plate; 3. Cover; 30. First handle; 31. First fixing hole; 32. Rectangular groove; 33. Second magnet; 34. Rectangular through hole; 4. First fixing ring; 41. Convex lens; 5. Solder joint detection component; 51. Second fixing ring; 52. Silicone pad; 521. Circular through hole; 53. Vertical rod; 54. Collar; 55. Rubber ball; 56. Rubber head; 6. Acrylic plate; 61. Hinge shaft; 62. First magnet; 63. Second handle. Detailed implementation

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0028] As Figures 1 to 5 shown, a solder joint detection device for PCB board patch welding includes a base 1. The base 1 is in the shape of a flat cuboid, and a circuit board fixing structure is provided on the upper surface of the base 1. A cover 3 is detachably provided on the base 1. The cover 3 is in the shape of a cuboid with an open bottom, and an observation window is fixedly provided at the top of the cover 3. A solder joint detection component 5 is provided on the cover 3 around the observation window.

[0029] A circle of bosses 11 is fixedly provided on the edge of the upper surface of the base 1, and the inner surface of the bottom of the cover 3 is in frictional fit with the outer side surface of the boss 11.

[0030] The circuit board fixing structure includes two groups on the left and right. Each group includes a thrust component 2 provided outward at the middle position of the upper surface of the base 1. The thrust component 2 includes a fixed block 21. Bolts 22 are screwed from the inside to the outside on the fixed block 21. The outer ends of the bolts 22 are respectively rotatably riveted with top blocks 23. Rubber top plates 24 are respectively fixed at the outer ends of the top blocks 23. A card slot 12 for cooperating with the circuit board is provided at the bottom of the boss 11 outside the rubber top plate 24.

[0031] The observation window includes a first through hole 31 in the shape of a circle embedded in the top plate of the cover 3. A first fixing ring 4 is adhesively provided in the first through hole 31, and a convex lens 41 is fixed in the first fixing ring 4.

[0032] The solder joint detection component 5 includes a second circular through hole (not separately marked) embedded in the top plate of the cover body 3, a second fixing ring 51 is bonded in the second through hole, a circular silicone pad 52 is fixed in the second fixing ring 51, a circular through hole 521 is provided at the center of the silicone pad 52, a vertical rod 53 (which can vertically damp and slide to adjust the position) is provided in the circular through hole 521 for contact and sliding, a damping sliding sleeve is provided on the vertical rod 53 on the upper side of the circular through hole 521, a rubber ball 55 is fixed on the top of the vertical rod 53, and a conical rubber head 56 (hard, easy to move the electronic components, and at the same time protect the electronic components) is provided at the bottom of the vertical rod 53.

[0033] The first handles 30 are fixedly provided at the center positions of the left and right outer sides of the cover body 3, respectively, to facilitate the taking and placing of the cover body 3.

[0034] When in use, place the circuit board between the rubber top plate 24 and the card slot 12, and insert the outer end of the circuit board into the card slot 12. Then, by screwing the bolt 22 outward, the rubber top plate 24 can be pushed and clamped against the circuit board, which is convenient for subsequent inspection. Cover the cover body 3, and the staff can observe the electronic components of the circuit board through the convex lens 41. The convex lens 41 has a magnifying effect, which is conducive to the staff to observe the electronic components more clearly. The staff can hold the rubber ball 55 on the top and swing the vertical rod 53, so that the rubber head 56 at the bottom moves the electronic components. If the electronic components are loose, it proves that they are desoldering. The cover body 3 can be removed for further inspection. The overall structure is simplified, and manual inspection can improve the accuracy of the inspection. When not in use, the ring 54 can be slid down to play a limiting role on the upper side of the silicone pad 52, so that the rubber head 55 is located above the circuit board to avoid squeezing the circuit board. Example

[0035] like Figure 6 As shown, a rectangular through hole 34 is embedded in the front side of the cover body 3, a transparent acrylic plate 6 is embedded in the rectangular through hole 34, the bottom of the acrylic plate 6 is hinged to the base 1 through a hinge shaft 61, a first magnetic block 62 is fixed on the top of the acrylic plate 6, a rectangular groove 32 is embedded in the cover body 3 on the upper side of the rectangular through hole 34, and a second magnetic block 33 that attracts and cooperates with the first magnetic block 62 is bonded and fixed in the rectangular groove 32.

[0036] A second handle 63 is fixedly provided on the outer side of the acrylic plate 6 .

[0037] When in use, the transparent acrylic plate 6 can assist the solder joint detection component 5 in observing the soldering condition of the internal circuit board, and the circuit board can also be taken in and out from the side.

[0038] The components used in the present invention are all common standard components or components known to those skilled in the art, and their structures and principles are well known to those skilled in the art.

[0039] It should be noted that in this text, the orientation or positional relationships indicated by terms such as "first", "second", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and 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 also includes elements inherent to such process, method, article or device.

[0040] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the conditions for the implementation of the present utility model. Any modification of the structure, change in the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0041] 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 principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A solder joint detection device for PCB board patch welding, characterized in that: It includes a base, which is in the shape of a flat rectangular parallelepiped, and a circuit board fixing structure is provided on the upper surface of the base; A cover body is detachably provided on the base, and the cover body is in the shape of a rectangular parallelepiped with an opening at the bottom. An observation window is fixedly provided on the top of the cover body, and a welding point detection component is provided on the cover body around the observation window.

2. A solder joint detection device for PCB board patch welding according to claim 1, characterized in that: A circle of bosses is fixedly provided on the edge of the upper surface of the base, and the inner surface of the bottom of the cover body is frictionally matched with the outer side surface of the bosses.

3. A solder joint detection device for PCB board patch welding according to claim 1, characterized in that: The circuit board fixing structure includes two groups on the left and right, each group includes a pushing assembly arranged outward from the middle position of the upper surface of the base, the pushing assembly includes a fixing block, bolts are screwed on the fixing block from the inside to the outside, the outer ends of the bolts are respectively rotatably riveted with pushing blocks, the outer ends of the pushing blocks are respectively fixed with rubber top plates, and the bottom of the boss on the outer side of the rubber top plate is provided with a slot that cooperates with the circuit board.

4. A solder joint detection device for PCB board patch welding according to claim 1, characterized in that: The observation window comprises a circular first through hole embedded in the top plate of the cover body, a first fixing ring is bonded in the first through hole, and a convex lens is fixed in the first fixing ring.

5. A solder joint detection device for PCB board patch welding according to claim 1, characterized in that: The welding spot detection component includes a circular second through hole embedded in the top plate of the cover body, a second fixing ring is bonded in the second through hole, a circular silicone pad is fixed in the second fixing ring, a circular through hole is provided at the center of the silicone pad, a vertical rod is provided in the circular through hole for contact and sliding, a damping sliding sleeve is provided on the vertical rod on the upper side of the circular through hole, a rubber ball is fixed on the top of the vertical rod, and a conical rubber head is provided at the bottom of the vertical rod.

6. A solder joint detection device for PCB board patch welding according to claim 1, characterized in that: The first handles are fixedly provided at the center positions of the left and right outer sides of the cover body respectively.

7. A solder joint detection device for PCB board patch welding according to claim 1, characterized in that: A rectangular through hole is embedded in the front side of the cover body, a transparent acrylic plate is embedded in the rectangular through hole, the bottom of the acrylic plate is hinged to the base through a hinge shaft, a first magnetic block is fixed on the top of the acrylic plate, a rectangular groove is embedded on the cover body on the upper side of the rectangular through hole, and a second magnetic block that attracts and cooperates with the first magnetic block is bonded and fixed in the rectangular groove.

8. A solder joint detection device for PCB board patch welding according to claim 7, characterized in that: A second handle is fixedly provided on the outer side of the acrylic plate.

Images