CN115709320A - Printed board assembly welding tool and using method thereof - Google Patents

Abstract

The invention provides a printed board assembly part welding tool and a using method thereof. A printed board assembly welding tool comprises: the printed board assembly comprises a bottom plate, a plurality of shells for carrying out heat insulation protection on connectors of the printed board assembly and a plurality of supporting mechanisms for supporting printed boards of the printed board assembly, wherein the shells are installed on the bottom plate, and the supporting mechanisms are installed on two sides of the shells. Realize the welding of curved plug connector user equipment, can weld the various outer connectors of printed board that stretch out in batches for the J type connector can use selectivity wave-soldering, wave-soldering equipment welding, and the printed board pad can obtain fully preheating and moist, makes the connector pin can obtain hundred percent tin penetration, solves the connector solder joint tin penetration problem, satisfies the welding quality and the operation requirement of radar product, improves production quality, improves welding efficiency.

Description

A printed circuit board assembly welding tool and its application method

technical field

The invention relates to the technical field of electrical interconnection, in particular to a welding tool for a printed board assembly and a method for using the same.

Background technique

With the development of aerospace technology, the performance and reliability indicators of aerospace products are also continuously improving, which also puts forward stricter requirements for the reliability of printed board assembly products. In addition, in the face of the current severe quality situation, how to eliminate quality hazards at the front end of production has become a top priority. Printed board assemblies are the basic unit of radar products, which makes it particularly important to improve the product quality of electronic components. Therefore, how to more reasonably control the product quality of printed board assemblies and improve product reliability has become the key to current product production.

Printed board assembly is the foundation of aerospace radar products, and the welding quality of the assembly directly affects the performance of the entire radar. At present, the assembly of J-type connectors is the most common assembly device for radar components, and is widely used in aerospace electronic products at all levels. Since the connector belongs to the J-shaped bent plug connector, it protrudes out of the board after installation, so common soldering equipment wave soldering and selective wave soldering cannot be used, and manual soldering can only be used. All cannot satisfy current product production efficiency and production quality on quality.

Contents of the invention

The technical problem to be solved by the present invention is to provide a printed circuit board assembly welding tool and its use method in view of the deficiencies in the prior art.

The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a printed board assembly welding tool, including: a bottom plate, a plurality of housings for thermal insulation protection of A support mechanism for supporting the printed board of the printed board assembly, a plurality of the housings are installed on the bottom plate, and a plurality of the support mechanisms are installed on both sides of the plurality of housings.

The beneficial effect of adopting the technical solution of the present invention is: to realize the welding of the bent plug connector using equipment, to batch weld various connectors protruding from the printed board, so that the J-type connector can use selective wave soldering and wave soldering equipment Soldering, the printed board pads can be fully preheated and wetted, so that the connector pins can be 100% tinned, solve the problem of connector solder joints tinned, meet the welding quality and use requirements of radar products, and improve production Quality, improve welding efficiency.

Further, the supporting mechanism includes: a cylinder and a pressing block for supporting the printed board, the cylinder is installed on the bottom plate, and the pressing block is installed in the cylinder to slide up and down.

The beneficial effect of adopting the above-mentioned further technical solution is: an adjustable pressing block with the function of fixing the printed board, and one end of the pressing block is fixed by a screw on the tooling, so that the pressing block can adjust its height and strength according to the height of the printed board , to ensure that the printed board is fixed.

Further, a spring is provided in the barrel, one end of the spring is connected to the bottom plate, the other end of the spring is connected to the pressing block, the bottom of the pressing block is provided with a first protrusion, and the barrel The top of the body is provided with a second protrusion, and the first protrusion abuts against the second protrusion.

The beneficial effect of adopting the above-mentioned further technical solution is: the adjustable pressure block with the function of fixing the printed board, the pressure block is fixed by a screw on the tooling at one end, and a spring device is added to the screw, so that the pressure block can be adjusted according to the printed circuit board. The height of the board can be adjusted by itself in terms of height and strength to ensure that the printed board is fixed.

Further, the supporting mechanism further includes: a plurality of supporting edges for supporting the printed board, the plurality of supporting edges are adjacent to the plurality of supporting mechanisms, and the plurality of supporting edges protrude from the bottom plate.

The beneficial effect of adopting the above-mentioned further technical solution is: the two sides of the tooling are respectively designed with large-area supporting edges, which can effectively support the printed board assembly and prevent deformation after being overheated.

Further, the top of the bottom plate and the top of the casing are open, and both the bottom plate and the casing are rectangular frame structures.

The beneficial effect of adopting the above-mentioned further technical solution is: to match the structural characteristics of the J-type connector, it is convenient for the shell to wrap the J-type connector, to protect the connector body from heat, and to reduce the deformation of the J-type connector to prevent Liquid tin has been spilled into the connector. Meet the temperature required for normal welding, improve the penetration rate of solder joints, and ensure welding consistency. The welding quantity and structural form of the connector can be flexibly selected to meet the output requirements of the radar components. The design of the rectangular frame not only has the effect of heat insulation, but also can play the role of connector correction, preventing the deformation of the J-type connector after being affected by high temperature.

Further, the printed board assembly includes a printed board and a connector, and the connector is installed on the printed board.

The beneficial effect of adopting the above further technical solution is that the printed board and the connector are assembled into a printed board assembly, which facilitates the installation and welding of the printed board assembly.

Further, both sides of the connector are respectively connected to the printed board by screws, and the bottom plate is provided with multiple pairs of screw support cylinders for supporting the screws, and each pair of the screw support cylinders is located one by one. sides of the housing.

The beneficial effect of adopting the above-mentioned further technical solution is that a fixing device, namely a screw, is designed between the connector and the printed board, which can effectively prevent gaps between the two and poor welding from occurring. According to the characteristics of screw mounting of the connector, a cylindrical device with a round hole that can protect the screw, that is, the screw support cylinder, is designed to prevent liquid tin from flowing into the screw hole and blocking the screw hole. The connector is screwed into the printed board assembly first, and then the connector is soldered. In order to prevent the J-shaped connector screw from being splashed by tin liquid, a cylindrical frame device, that is, a screw support cylinder, is designed for protection.

Further, the connector is a J-shaped connector, and the bottom plate, the housing and the supporting mechanism are all made of synthetic stone material.

The beneficial effects of adopting the above-mentioned further technical solution are: meeting the temperature required for normal welding, increasing the tin penetration rate of solder joints, and ensuring welding consistency. The tooling is made of high-temperature resistant materials. The synthetic stone board has high elastic-plasticity and impact resistance, and has high corrosion resistance, which ensures that the heat on the printed board is evenly distributed and can still be maintained after long-term use. its intrinsic size. It is not easy to deform under the welding temperature, which can ensure the flatness of the printed board, prevent the deformation of the printed board, and ensure the welding quality.

In addition, the present invention also provides a method for using a printed board assembly welding tool, based on any one of the above described a printed board assembly welding tool, a method for using a printed board assembly welding tool includes:

Mount the connector on the printed board to form a printed board assembly;

Pre-baking and dehumidification of printed boards of printed board assemblies;

Install the connector of the printed board assembly in the housing of the printed board assembly welding tool;

Place the printed board of the printed board assembly on the support mechanism of the soldering tooling of the printed board assembly;

Put the welding tooling of the printed board assembly with the printed board assembly into the wave soldering equipment for preheating and welding;

After soldering is complete, remove and save the printed board assembly from the printed board assembly soldering fixture.

The beneficial effect of adopting the technical solution of the present invention is: to realize the welding of the bent plug connector using equipment, to batch weld various connectors protruding from the printed board, so that the J-type connector can use selective wave soldering and wave soldering equipment Soldering, the printed board pads can be fully preheated and wetted, so that the connector pins can be 100% tinned, solve the problem of connector solder joints tinned, meet the welding quality and use requirements of radar products, and improve production Quality, improve welding efficiency.

Advantages of additional aspects of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

FIG. 1 is one of the structural schematic diagrams of a connector provided by an embodiment of the present invention.

FIG. 2 is the second structural schematic diagram of the connector provided by the embodiment of the present invention.

FIG. 3 is the third structural schematic diagram of the connector provided by the embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a printed board assembly provided by an embodiment of the present invention.

Fig. 5 is one of the structural schematic diagrams of the welding tool for printed board assemblies provided by the embodiment of the present invention.

Fig. 6 is the second structural schematic diagram of the soldering tool for printed board assemblies provided by the embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a support mechanism provided by an embodiment of the present invention.

FIG. 8 is one of the schematic flow charts of the method for using the soldering tool of the printed board assembly provided by the embodiment of the present invention.

FIG. 9 is the second schematic flow chart of the method for using the welding tool for printed board assemblies provided by the embodiment of the present invention.

Description of reference numerals: 1. Base plate; 2. Printed board assembly; 3. Connector; 4. Housing; 5. Printed board; 6. Support mechanism; 7. Cylinder body; 8. Press block; 9. Spring; 10, first protrusion; 11, second protrusion; 12, edge; 14, screw; 15, screw support cylinder.

Detailed ways

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

As shown in Figures 1 to 7, the embodiment of the present invention provides a printed board assembly welding tool, including: a bottom plate 1, a plurality of connectors 3 for thermal insulation protection of the printed board assembly 2 The housing 4 and a plurality of supporting mechanisms 6 for supporting the printed board 5 of the printed board assembly 2, the plurality of the housings 4 are installed on the bottom plate 1, and the plurality of the supporting mechanisms 6 are installed on both sides of the multiple casings 4 .

The beneficial effect of adopting the technical solution of the present invention is: to realize the welding of the bent plug connector using equipment, to batch weld various connectors protruding from the printed board, so that the J-type connector can use selective wave soldering and wave soldering equipment Soldering, the printed board pads can be fully preheated and wetted, so that the connector pins can be 100% tinned, solve the problem of connector solder joints tinned, meet the welding quality and use requirements of radar products, and improve production Quality, improve welding efficiency.

As shown in Figures 1 to 7, further, the support mechanism 6 includes: a cylinder 7 and a pressing block 8 for supporting the printed board 5, the cylinder 7 is installed on the bottom plate 1, the The pressing block 8 is installed in the barrel 7 slidingly up and down.

The beneficial effect of adopting the above-mentioned further technical solution is: an adjustable pressing block with the function of fixing the printed board, and one end of the pressing block is fixed by a screw on the tooling, so that the pressing block can adjust its height and strength according to the height of the printed board , to ensure that the printed board is fixed.

As shown in Figures 1 to 7, further, a spring 9 is provided in the barrel 7, one end of the spring 9 is connected to the bottom plate 1, and the other end of the spring 9 is connected to the pressing block 8, so The bottom of the pressure block 8 is provided with a first protrusion 10 , and the top of the barrel 7 is provided with a second protrusion 11 , and the first protrusion 10 abuts against the second protrusion 11 .

The beneficial effect of adopting the above-mentioned further technical solution is: the adjustable pressure block with the function of fixing the printed board, the pressure block is fixed by a screw on the tooling at one end, and a spring device is added to the screw, so that the pressure block can be adjusted according to the printed circuit board. The height of the board can be adjusted by itself in terms of height and strength to ensure that the printed board is fixed.

As shown in FIG. 1 to FIG. 7 , further, the support mechanism 6 further includes: a plurality of flanges 12 for supporting the printed board 5 , the plurality of flanges 12 are adjacent to the plurality of support mechanisms 6 , A plurality of the support edges 12 protrude from the bottom plate 1 .

The beneficial effect of adopting the above-mentioned further technical solution is: the two sides of the tooling are respectively designed with large-area supporting edges, which can effectively support the printed board assembly and prevent deformation after being overheated.

A through hole may be provided in the middle of the bottom plate, and a plurality of the housings 4 and a plurality of the supporting mechanisms 6 are arranged around the through hole. The through holes are used to install screw pads and fix the printed board.

As shown in FIG. 1 to FIG. 7 , further, the top of the bottom plate 1 and the top of the casing 4 are open, and the bottom plate 1 and the casing 4 are both rectangular frame structures.

The beneficial effect of adopting the above-mentioned further technical solution is: to match the structural characteristics of the J-type connector, it is convenient for the shell to wrap the J-type connector, to protect the connector body from heat, and to reduce the deformation of the J-type connector to prevent Liquid tin has been spilled into the connector. Meet the temperature required for normal welding, improve the penetration rate of solder joints, and ensure welding consistency. The welding quantity and structural form of the connector can be flexibly selected to meet the output requirements of the radar components. The design of the rectangular frame not only has the effect of heat insulation, but also can play the role of connector correction, preventing the deformation of the J-type connector after being affected by high temperature.

As shown in FIGS. 1 to 7 , further, the printed board assembly 2 includes a printed board 5 and a connector 3 , and the connector 3 is installed on the printed board 5 .

The beneficial effect of adopting the above further technical solution is that the printed board and the connector are assembled into a printed board assembly, which facilitates the installation and welding of the printed board assembly.

As shown in Figures 1 to 7, further, both sides of the connector 3 are respectively connected to the printed board 5 by screws 14, and multiple pairs of screws for supporting the screws 14 are provided on the bottom plate 1 The supporting cylinders 15 , each pair of the screw supporting cylinders 15 are located on both sides of the housing 4 in one-to-one correspondence.

The beneficial effect of adopting the above-mentioned further technical solution is that a fixing device, namely a screw, is designed between the connector and the printed board, which can effectively prevent gaps between the two and poor welding from occurring. According to the characteristics of screw mounting of the connector, a cylindrical device with a round hole that can protect the screw, that is, the screw support cylinder, is designed to prevent liquid tin from flowing into the screw hole and blocking the screw hole. The connector is screwed into the printed board assembly first, and then the connector is soldered. In order to prevent the J-shaped connector screw from being splashed by tin liquid, a cylindrical frame device, that is, a screw support cylinder, is designed for protection.

As shown in FIGS. 1 to 7 , further, the connector 3 is a J-shaped connector, and the base plate 1 , the housing 4 and the support mechanism 6 are all made of synthetic stone material.

The beneficial effects of adopting the above-mentioned further technical solution are: meeting the temperature required for normal welding, increasing the tin penetration rate of solder joints, and ensuring welding consistency. The tooling is made of high-temperature resistant materials. The synthetic stone board has high elastic-plasticity and impact resistance, and has high corrosion resistance, which ensures that the heat on the printed board is evenly distributed and can still be maintained after long-term use. its intrinsic size. It is not easy to deform under the welding temperature, which can ensure the flatness of the printed board, prevent the deformation of the printed board, and ensure the welding quality.

Solving the problem of wave soldering of connectors is a problem that must be faced to improve the production efficiency of THT (Through hole technology, through-hole technology), reduce production costs, and save manpower and material resources. In order to solve many problems of manual welding of J-type connectors, the invention provides a welding tool for printed board assemblies. Based on the structural design of J-type connectors, various connectors protruding from the board can be welded, and wave soldering can be used. Weld J-type connectors to realize the welding of bent plug connectors with equipment, thereby greatly improving production efficiency and production quality. Get rid of the original solidified production mode, realize the J-type connector can use the equipment welding demand mode; solve the problem of connector solder joint tin penetration. It fully matches the structural characteristics of J-type connectors, meets the actual welding quality and production efficiency of radar components, and combines the structural characteristics of J-type connectors to achieve flexible production requirements, and can flexibly select the welding quantity and structure of the connectors, which is convenient to meet Production requirements for radar components. For J-type connectors, selective wave soldering can be used, and when wave soldering is required, the problem of tin penetration in solder joints of connectors can be solved, and the soldering efficiency and quality of connectors can be improved.

Tooling material selection design method, the soldering temperature of wave soldering can generally reach 260 ° C, at this temperature, some connector bodies are not resistant to high temperatures, and some PCBs (Printed Circuit Board, printed circuit boards) with thinner thickness and larger size , referred to as printed board) may be deformed and bent. The pad size of some through-hole components on the PCB is very small, and the sensitivity to the soldering position is high. Once the PCB is deformed and bent, the soldering effect of these components will be greatly affected, and there may be excessive or insufficient solder, bridge Even, missing welding, virtual welding and other defects. All wave soldering tooling needs to be made of high-temperature-resistant materials, which are not easily deformed at the soldering temperature, which can ensure the flatness of the PCB and further ensure the soldering quality.

Through research and experiments on various materials, the synthetic stone plate material was finally selected. The synthetic stone plate has high elastic-plasticity and impact resistance, and has high corrosion resistance, which can ensure uniform heat distribution on the PCB board, and It can still maintain its inherent size after long-term use. The heat-resistant temperature of synthetic stone is generally 300-350°C, and the heat-resistant temperature can reach 385°C in a short period of time. It has good high-temperature resistance and ensures that it will not fade for a long time. It is often used to make high-temperature-resistant devices.

Tooling model design design method, the design of J-type connector tooling is divided into two categories, one is to classify and summarize the structural size of the connector, and obtain the optimal design size; the other is to use the tooling environment and should have Various functions are designed. J-type connector specifications, J-type connectors are mostly J30J connectors, and the connectors can have up to 100 pins. The connector is divided into two parts, the socket and the plug. The welding of the socket part is especially important. The socket has extremely strict temperature requirements. If the temperature is too high, the hole diameter of the socket will be deformed, causing the socket to fail to connect. Therefore, radar products attach great importance to the welding quality and welding requirements of the connector. In the design of the connector tooling, it is necessary to ensure that the shape of the connector is not affected by temperature and cause deformation, which will affect the subsequent product docking. Connector product characteristics, working temperature range: -65～125°C; jack structure: hyperboloid spring jack; spacing: 2.54mm; termination method: dip soldering, welding, winding; contact diameter: 0.76mm; medium Withstanding voltage: 1500V.

Design of tooling (that is, welding tooling for printed board assembly parts), the material design selection of tooling has heat insulation effect, and can withstand high temperatures above 300 °C. The structural design of the tooling adopts a rectangular frame (shell) design that can perfectly wrap the J-type connector, which can effectively protect the connector body from heat insulation and reduce the deformation of the J-type connector. Using this tooling can effectively prevent tin liquid from splashing into the connector. And a fixing device (screw) is designed between the connector and the printed board, which can effectively prevent gaps between the two and poor welding. According to the characteristics of screw mounting of the connector, a circular hole cylindrical device (ie, screw support cylinder) that can protect the screw is designed, which can prevent liquid tin from flowing into the screw hole and blocking the screw hole.

1) In the structure of the tooling, an adjustable pressure block with the function of fixing the printed board is designed. One end of the pressure block is fixed by a screw (cylinder) on the tooling, and a spring is added to the screw so that the pressure block can be fixed. Adjust the height and strength according to the height of the printed board to ensure that the printed board is fixed.

2) Support edge design: Both sides of the tooling are designed with large-area support edges, which can effectively hold the printed board components and prevent deformation after heavy heating.

3) Rectangular frame: Four rectangular frames (shells) are designed for the tooling, which can weld four printed board components with J-shaped connectors at the same time. The design of the rectangular frame not only plays a heat insulation effect, but also serves as a connector Correction function to prevent deformation of J-type connectors after being affected by high temperature.

4) Connector screw placement area (screw support cylinder): The connector needs to be screwed into the printed board assembly first, and then the connector is welded. In order to prevent the J-type connector screws from being splashed by tin liquid, a cylindrical frame is designed device for protection.

5) The groove depth of the bottom plate is 3mm to 5mm, which is 0.2mm to 0.5mm thicker than the printed board.

6) The screw hole size of the screw support cylinder has a radius of 0.25mm and a depth of 0.5mm.

7) The size of the connector groove in the housing is 8.1mm*95mm.

In the production process of the printed board assembly with the J connector, the welding tooling of the printed board assembly manufactured by the method can meet the welding quality and use requirements of radar products. Compared with the original manual welding method, this method can fully realize the welding requirements of equipment welding J-type connectors and has the following advantages: 1. Based on tooling, the efficiency of connector welding is improved. Compared with manual welding connectors, the operation When using the connector welding tool, this tool can be used for wave soldering or selective wave soldering of a large number of printed board components with connectors, which improves production efficiency and reduces user labor intensity. 2. Based on the improvement of the soldering quality of the connector based on the tooling, for products with batches, the tooling can be used for wave soldering or selective wave soldering of various connectors, and the pads of the printed board can be fully preheated and wetted to make the connection The device pins can be 100% transparent tin, thereby ensuring product quality.

As shown in Figures 8 to 9, in addition, the present invention also provides a method for using a printed board assembly welding tool, based on any one of the above described printed board assembly welding tools, a printed The methods of using welding tooling for board assemblies include:

S1. Install the connector on the printed board to form a printed board assembly;

S2. Pre-baking and dehumidifying the printed board of the printed board assembly;

S3, installing the connector of the printed board assembly in the shell of the welding tool of the printed board assembly;

S4, placing the printed board of the printed board assembly on the supporting mechanism of the welding tool of the printed board assembly;

S5. Put the welding tooling of the printed board assembly with the printed board assembly into the wave soldering equipment for preheating and welding;

S6. After the welding is completed, the printed board assembly is disassembled from the printed board assembly welding tool and stored.

The beneficial effect of adopting the technical solution of the present invention is: to realize the welding of the bent plug connector using equipment, to batch weld various connectors protruding from the printed board, so that the J-type connector can use selective wave soldering and wave soldering equipment Soldering, the printed board pads can be fully preheated and wetted, so that the connector pins can be 100% tinned, solve the problem of connector solder joints tinned, meet the welding quality and use requirements of radar products, and improve production Quality, improve welding efficiency.

As shown in Figures 8 to 9, the method of using the welding tooling for printed board assemblies is based on the method of using the universal tooling for wave soldering of J-type connectors for radar high-density boards, specifically:

The first step: according to the structural characteristics and process characteristics of the connector, the size and structure of the connector are analyzed.

Step 2: Combining the structural diagram of the connector after it is installed into the printed board, carry out tooling structure design on the analyzed connector and the installed connector.

The third step: select the tooling material in combination with the structural characteristics and process characteristics of the connector.

Step 4: Pre-baking and dehumidifying the printed board.

Step 5: The operator combines the design drawings and process documents to form the components to be soldered and insert them into the corresponding apertures.

Step 6: Combine the tooling, after the connector and the printed board are fully assembled, perform structural assembly with the tooling.

Step 7: Put the assembled printed board into the wave soldering equipment for preheating and soldering.

Step 8: After the welding is completed, after the printed board is cooled, disassemble the printed board from the tooling and save it.

As shown in Figure 9, the printed board is preheated and dehumidified, the printed board is assembled with the tooling structure, the THT device is tinned and formed, the THT device is inserted, the printed board is preheated, wave soldering is performed, and the printed board is cooled , Disassemble the tooling.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (9)

1. A printed board assembly welding tool, characterized in that it includes: a bottom plate, a plurality of housings for heat insulation protection of the connectors of the printed board assembly, and a plurality of housings for supporting the printed board assembly A supporting mechanism for supporting printed boards of parts, a plurality of the housings are installed on the bottom plate, and a plurality of the supporting mechanisms are installed on both sides of the plurality of housings. 2. A printed board assembly welding tool according to claim 1, characterized in that, the supporting mechanism comprises: a cylinder and a pressing block for supporting the printed board, the cylinder is installed on the On the bottom plate, the pressing block is installed in the barrel so as to slide up and down. 3. A printed board assembly welding tool according to claim 2, characterized in that a spring is provided in the barrel, one end of the spring is connected to the bottom plate, and the other end of the spring is connected to the The pressing block is connected, the bottom of the pressing block is provided with a first protrusion, the top of the cylinder is provided with a second protrusion, and the first protrusion abuts against the second protrusion. 4. A printed board assembly welding tool according to claim 2, characterized in that, the support mechanism further comprises: a plurality of supporting edges for supporting the printed board, and the plurality of supporting edges are adjacent to multiple There are two supporting mechanisms, and a plurality of supporting edges protrude from the bottom plate. 5 . The soldering tool for printed board assemblies according to claim 1 , wherein the top of the bottom plate and the top of the casing are open, and the bottom plate and the casing are both rectangular frame structures. 6 . 6. A printed board assembly welding tool according to claim 1, wherein the printed board assembly includes a printed board and a connector, and the connector is installed on the printed board . 7. A printed board assembly welding tool according to claim 6, characterized in that, the two sides of the connector are respectively connected to the printed board by screws, and the bottom plate is provided with There are multiple pairs of screw support cylinders for the screws, and each pair of the screw support cylinders is located on both sides of the housing in one-to-one correspondence. 8. A printed circuit board assembly welding tool according to claim 1, wherein the connector is a J-shaped connector, and the base plate, the housing and the supporting mechanism are made of the same material. It is a synthetic slate material. 9. A method for using a printed board assembly welding tool, characterized in that, based on the printed board assembly welding tool described in any one of claims 1 to 8, a printed circuit board assembly welding tool Methods of use include: Mount the connector on the printed board to form a printed board assembly; Pre-baking and dehumidification of printed boards of printed board assemblies; Install the connector of the printed board assembly in the housing of the printed board assembly welding tool; Place the printed board of the printed board assembly on the support mechanism of the soldering tooling of the printed board assembly; Put the welding tooling of the printed board assembly with the printed board assembly into the wave soldering equipment for preheating and welding; After soldering is complete, remove and save the printed board assembly from the printed board assembly soldering fixture.

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