A spot detection device for inverter welding

Abstract

The utility model relates to a kind of welding spot detection devices for inverter welding processing, including welding tooling and detection piece, welding tooling fixedly arranged, for embedding the PCB board to be processed, and for welding treatment to the PCB board to be processed;Detection piece is installed below welding tooling, for detecting the back of the PCB board to be processed.The beneficial effects of the utility model are simple structure, reasonable design, and the operator can monitor the PCB back welding point state during welding process, avoid secondary detection, easy to operate, and low detection cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to inverter welding detection technical field, concretely relates to a welding spot detection device for inverter welding processing. BACKGROUND

[0002] Nowadays, electronic products develop rapidly, and its application has involved all walks of life. The welding quality of electronic product workpieces is the basis and key link of product quality, and the problem of single workpiece welding quality often brings serious consequences, even causes the failure of the whole project, and causes great loss to enterprises. Therefore, as an electronic product production enterprise, it should pay attention to the detection of the welding quality of electronic product workpieces, among which, the PCB tin infiltration problem is one of the most serious problems in the welding process of electronic product workpieces.

[0003] When welding large circuit boards of inverter, active unbalance compensation device, flexible DC comprehensive voltage regulating device and some large product cabinets, the existing tin infiltration detection method usually turns over the welding tool after welding, detects the tin infiltration state of the welding spot, turns over the welding tool again after detection, and processes the bad point (usually for the welding tool of the above-mentioned circuit board, the welding spot on the back of the circuit board is also completely exposed when the circuit board is fixed on the welding tool).

[0004] In practical application, it is found that the operation mode has the following problems:

[0005] 1. The welding tool needs to be turned over twice:

[0006] ① The large circuit board of the large product cabinet is too heavy to operate inconveniently;

[0007] ② It takes a long time, and affects the work efficiency;

[0008] ③ There may be bumping during the turning over process, which can easily damage the components and cause product scrap.

[0009] 2. The back welding spot state of the PCB cannot be monitored in real time during welding operation, and it is troublesome to handle the tin leakage and excessive tin leakage. UTILITY MODEL CONTENTS

[0010] The utility model provides a welding spot detection device for inverter welding processing, which aims at solving the problems in the prior art.

[0011] The technical scheme for solving the above technical problems is as follows:

[0012] A solder joint detection device for inverter welding processing includes a welding fixture and a detection component. The welding fixture is fixedly installed for mounting a PCB board to be processed and for performing welding processing on the PCB board to be processed. The detection component is installed below the welding fixture for detecting the back side of the PCB board to be processed.

[0013] The beneficial effects of this utility model are: during use, the PCB board to be processed is embedded in the welding fixture, and then the welding fixture is used to weld the PCB board; during this process, the inspection component is used to inspect the specific condition of the back of the PCB board to ensure the quality of welding.

[0014] This utility model has a simple structure and reasonable design. Operators can monitor the status of solder joints on the back of the PCB board during the soldering process, avoiding secondary inspection. It is easy to operate and has low inspection costs.

[0015] Based on the above technical solution, the present invention can be further improved as follows.

[0016] Furthermore, it also includes a welding fixture frame, wherein the welding fixture is fixedly installed on the top of the welding fixture frame; the inspection piece is fixedly installed on the welding fixture frame, and is located below the welding fixture.

[0017] The advantages of adopting the above-mentioned further solutions are that the structure is simple, the design is reasonable, the welding fixtures and test parts are assembled using welding fixtures, the integration is high, and the use is convenient.

[0018] Furthermore, the welding fixture includes a top support frame, a middle support frame, and multiple columns. The middle support frame is distributed below the top support frame. The multiple columns are evenly spaced along the edges of the top support frame and the middle support frame. The tops of the multiple columns are fixedly connected to the edges of the top support frame, and some of them are fixedly connected to the edges of the middle support frame.

[0019] The welding fixture is fixedly installed on the top support frame. The test piece is distributed at an angle, with its upper end fixedly connected to the top of part of the column and its lower end fixedly connected to the middle support frame.

[0020] The advantages of adopting the above-mentioned further solutions are that the structure is simple, the welding fixture adopts a split design which is more reasonable, and the processing is convenient.

[0021] Furthermore, the top support frame and / or the middle support frame are respectively rectangular frame structures, and there are four columns, which are respectively distributed at the four corners of the top support frame and the middle support frame.

[0022] The beneficial effect of adopting the above-mentioned further solutions is that the top support frame and the middle support frame have reasonable shapes and the whole device is neat and beautiful.

[0023] Furthermore, the cross-section of each of the columns is rectangular.

[0024] The advantages of adopting the above-mentioned further solution are that the structure is simple, the shape of the column is reasonably designed, the shape of the column is compatible with the top support frame and the middle support frame, and the assembly is convenient.

[0025] Furthermore, the testing component includes a reflector, which is tilted and its reflective surface faces the welding fixture.

[0026] The beneficial effect of adopting the above-mentioned further solution is that when using the solder joint detection device, the welding fixture needs to be assembled on the welding fixture frame first, and then the worker places the PCB board to be welded on the welding fixture for fixed positioning; during the welding process, the condition of the back of the PCB board will be reflected on the reflective mirror in real time, and the worker can observe the reflective mirror in time during the welding process to confirm the specific condition of the back of the PCB board, thereby ensuring the welding quality.

[0027] Furthermore, the angle of inclination of the reflector is 120°-150°.

[0028] The advantages of adopting the above-mentioned further solution are that the structure is simple, the angle of the reflector distribution is more reasonable, it is convenient to reflect the specific situation on the back of the PCB board, and the detection is more accurate.

[0029] Furthermore, the testing component also includes an illumination module, which is fixedly mounted on the central support frame.

[0030] The beneficial effect of adopting the above-mentioned further solution is that when using the solder joint detection device, the welding fixture needs to be assembled on the welding fixture frame first, and then the worker places the PCB board to be welded on the welding fixture for fixed positioning; during the welding process, the lighting module is turned on, and the situation on the back of the PCB board is reflected on the reflector in real time. The worker can observe the reflector in time during the welding process to confirm the specific situation on the back of the PCB board, thereby ensuring the welding quality.

[0031] Furthermore, the lighting module is a long strip-shaped lighting lamp, which is horizontally distributed on one side of the lower end of the reflector.

[0032] The advantages of adopting the above-mentioned further solution are that the structure is simple, and the use of a long strip-shaped lighting module is more reasonable. It can increase the brightness of the back of the PCB board, so that the reflector can more clearly reflect the specific situation on the back of the PCB board, and further ensure the soldering quality.

[0033] Furthermore, the welding fixture is provided with a mounting groove for mounting the PCB board to be processed.

[0034] The advantages of adopting the above-mentioned further solutions are that the structure is simple, the mounting groove design on the welding fixture is more reasonable, and it is convenient for PCB board assembly. Attached Figure Description

[0035] Fig. 1 This is a three-dimensional structural diagram of the present invention;

[0036] Fig. 2 This is the front view of the present invention.

[0037] Fig. 3 This is a side view of the present invention;

[0038] Fig. 4 This is a top view of the present invention.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] 1. Reflector; 2. Lighting module; 3. Welding fixture; 4. Welding fixture frame; 5. PCB board. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] Example 1

[0046] like Figs. 1 to 4 As shown, this embodiment provides a solder joint detection device for inverter welding processing, including a welding fixture 3 and a detection component. The welding fixture 3 is fixedly installed for embedding the PCB board 5 to be processed and for welding the PCB board 5 to be processed. The detection component is installed below the welding fixture 3 and is used to detect the back side of the PCB board 5 to be processed.

[0047] During use, the PCB board 5 to be processed is mounted on the welding fixture 3, and then the welding fixture 3 is used to weld the PCB board 5. During this process, the back of the PCB board 5 is inspected using a testing component to ensure the quality of the welding.

[0048] The welding fixture 3 mentioned above uses a welding machine from the existing technology. Its specific structure and principle will not be described in detail here.

[0049] This embodiment has a simple structure and reasonable design. Operators can monitor the status of solder joints on the back of the PCB board during the soldering process, avoiding secondary inspection. It is easy to operate and has low inspection costs.

[0050] Example 2

[0051] Based on Embodiment 1, this embodiment also includes a welding fixture 4, wherein the welding fixture 3 is fixedly installed on the top of the welding fixture 4; and the inspection piece is fixedly installed on the welding fixture 4, which is located below the welding fixture 3.

[0052] The solution has a simple structure and reasonable design. It uses welding fixture 4 to assemble welding fixtures and test parts, has a high degree of integration, and is easy to use.

[0053] Preferably, in this embodiment, the welding fixture 4 is a four-legged frame.

[0054] Example 3

[0055] Based on Embodiment 2, in this embodiment, the welding fixture 4 includes a top support frame, a middle support frame, and multiple columns. The middle support frame is distributed below the top support frame. The multiple columns are evenly spaced along the edges of the top support frame and the middle support frame. The tops of the multiple columns are fixedly connected to the edges of the top support frame, and some of them are fixedly connected to the edges of the middle support frame.

[0056] The welding fixture 3 is fixedly installed on the top support frame. The test piece is distributed at an angle, with its upper end fixedly connected to the top of part of the column and its lower end fixedly connected to the middle support frame.

[0057] The design is simple, and the split design of the welding fixture 4 is reasonable and easy to process.

[0058] Alternatively, the aforementioned top support frame, middle support frame, and multiple columns can also be integrally formed.

[0059] Example 4

[0060] Based on Embodiment 3, in this embodiment, the top support frame and / or the middle support frame are respectively rectangular frame structures, and the number of columns is four, with the four columns respectively distributed at the four corners of the top support frame and the middle support frame.

[0061] The top and middle support frames are reasonably designed, and the whole device is neat and beautiful.

[0062] Example 5

[0063] Based on any one of Embodiments 3 to 4, in this embodiment, the cross-section of each column is rectangular.

[0064] The design is simple, with a reasonable column shape that matches the shapes of the top and middle support frames, making assembly convenient.

[0065] Alternatively, the cross-section of the aforementioned column can also adopt other suitable geometric shapes, such as a circle.

[0066] Example 6

[0067] Based on any one of Embodiments 3 to 5, in this embodiment, the detection component includes a reflector 1, which is tilted and its reflective surface faces the welding fixture 3.

[0068] When using the solder joint detection device, the welding fixture 3 needs to be assembled on the welding fixture frame 4 first. Then, the operator places the PCB board 5 to be welded on the welding fixture 3 for fixed positioning. During the welding process, the condition of the back of the PCB board 5 will be reflected on the reflector surface in real time. The operator can observe the reflector surface 1 in time during the welding process to confirm the specific condition of the back of the PCB board 5, thereby ensuring the welding quality.

[0069] Preferably, in this embodiment, the reflector 1 is a high-precision reflector used to reflect the solder penetration on the back of the PCB board 5.

[0070] Example 7

[0071] Based on Example 6, in this example, the angle of inclination of the reflector 1 is 120°-150°.

[0072] The scheme has a simple structure and the angle of the reflector 1 is relatively reasonable, which makes it easier to reflect the specific situation on the back of the PCB board 5 and make the detection more accurate.

[0073] Preferably, in this embodiment, the angle at which the above-mentioned reflector 1 is tilted is preferably 120°.

[0074] Example 8

[0075] Based on any one of Embodiments 6 to 7, in this embodiment, the detection component further includes an illumination module 2, which is fixedly installed on the central support frame.

[0076] When using the solder joint detection device, the welding fixture 3 needs to be assembled on the welding fixture frame 4 first. Then, the worker places the PCB board 5 to be welded on the welding fixture 3 for fixed positioning. During the welding process, the lighting module 2 is turned on, and the situation on the back of the PCB board 5 is reflected in real time onto the reflector 1. The worker can observe the reflector surface in time during the welding process to confirm the specific situation on the back of the PCB board, thereby ensuring the welding quality.

[0077] Based on the above scheme, the lighting module 2 and the welding fixture 3 can be connected to plugs respectively. When in use, the two plugs can be used to connect to an external power source to supply power to the lighting module 2 and the welding fixture 3 respectively.

[0078] Alternatively, a control panel and battery can be installed on the welding fixture 4. The lighting module 2, welding fixture 3, and battery are connected to the control panel via wiring. In use, the operator operates the control panel to allow the battery to supply power to the lighting module 2 and welding fixture 3.

[0079] In addition, the battery needs to be charged regularly.

[0080] Example 9

[0081] Based on embodiment 8, in this embodiment, the lighting module 2 is a long strip-shaped lighting lamp, and the lighting lamp is horizontally distributed on one side of the lower end of the reflector 1.

[0082] The solution has a simple structure. The use of a long strip-shaped light in the lighting module 2 is reasonable. It can increase the brightness of the back of the PCB board 5, so that the reflector 1 can more clearly reflect the specific situation on the back of the PCB board 5, and further ensure the soldering quality.

[0083] Preferably, in this embodiment, the lighting lamp is an LED lamp.

[0084] Example 10

[0085] Based on the above embodiments, in this embodiment, the welding fixture 3 is provided with an mounting groove for mounting the PCB board 5 to be processed.

[0086] The design is simple, and the mounting slot on the welding fixture 3 is reasonably designed, which facilitates the assembly of the PCB board.

[0087] The working principle of this utility model is as follows:

[0088] When using the solder joint detection device, the welding fixture 3 needs to be assembled on the welding fixture frame 4 first. Then, the worker places the PCB board 5 to be welded on the welding fixture 3 for fixed positioning. During the welding process, the lighting module 2 is turned on, and the situation on the back of the PCB board 5 is reflected in real time onto the reflector 1. The worker can observe the reflector surface in time during the welding process to confirm the specific situation on the back of the PCB board, thereby ensuring the welding quality.

[0089] This utility model provides a solder joint inspection device, which has the following beneficial technical effects:

[0090] (1) Real-time detection: Combined with a high-definition reflector and a uniform light source, the operator can monitor the status of the solder joints on the back of the PCB board during the soldering process, avoiding secondary detection.

[0091] (2) Easy to operate: The device is designed in a user-friendly way, and operators can get started after simple training.

[0092] (3) Cost saving: Compared with expensive automated testing equipment, this device has a simple structure and low cost, making it suitable for small and medium-sized enterprises. It helps enterprises reduce testing costs and increase profits.

[0093] (4) High flexibility: Solder joint detection devices of different sizes can be made according to the PCB board size, which is highly applicable and can meet the needs of different application scenarios.

[0094] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0095] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0096] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A weld spot detection device for inverter welding, characterized in that: It includes a welding fixture (3) and an inspection piece. The welding fixture (3) is fixedly installed for mounting the PCB board (5) to be processed and for welding the PCB board (5) to be processed. The inspection piece is installed below the welding fixture (3) and is used to inspect the back of the PCB board (5) to be processed.

2. The solder joint detection device for inverter welding processing according to claim 1, characterized in that: It also includes a welding fixture (4), the welding fixture (3) is fixedly installed on the top of the welding fixture (4); the test piece is fixedly installed on the welding fixture (4), which is located below the welding fixture (3).

3. The solder joint detection device for inverter welding processing according to claim 2, characterized in that: The welding fixture (4) includes a top support frame, a middle support frame and multiple columns. The middle support frame is distributed below the top support frame. The multiple columns are evenly spaced along the edges of the top support frame and the middle support frame. The tops of the multiple columns are fixedly connected to the edges of the top support frame, and some of them are fixedly connected to the edges of the middle support frame. The welding fixture (3) is fixedly installed on the top support frame. The test piece is distributed at an angle, with its upper end fixedly connected to the top of part of the column and its lower end fixedly connected to the middle support frame.

4. The solder joint detection device for inverter welding processing according to claim 3, characterized in that: The top support frame and / or the middle support frame are each rectangular frame structures, and there are four columns, which are distributed at the four corners of the top support frame and the middle support frame.

5. The solder joint detection device for inverter welding processing according to claim 3, characterized in that: Each of the columns has a rectangular cross-section.

6. The solder joint detection device for inverter welding processing according to claim 3, characterized in that: The testing component includes a reflector (1), which is tilted and has its reflective surface facing the welding fixture (3).

7. The solder joint detection device for inverter welding processing according to claim 6, characterized in that: The angle of inclination of the reflector (1) is 120°-150°.

8. The solder joint detection device for inverter welding processing according to claim 6, characterized in that: The testing component also includes an illumination module (2), which is fixedly installed on the central support frame.

9. The solder joint detection device for inverter welding processing according to claim 8, characterized in that: The lighting module (2) is a long strip of lighting lamp, which is horizontally distributed on one side of the lower end of the reflector (1).

10. The solder joint detection device for inverter welding processing according to any one of claims 1-9, characterized in that: The welding fixture (3) is provided with a mounting groove for mounting the PCB board (5) to be processed.

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