A circuit board welding positioning tool

Abstract

The present invention relates to the technical field of circuit boards, and specifically to a circuit board welding positioning tool, comprising: a base; a placement table, the placement table is fixedly connected and arranged on the outer side of the top end of the base, and is used to support the circuit board; a pressure component, the pressure component is connected to the base; a positioning mechanism, the positioning mechanism is connected to the base and to the placement table; wherein the positioning mechanism comprises: a control component, a limit component, a clamping component and a transmission component, the control component is arranged on the inner side of the base, the control component is connected to the limit component symmetrically arranged on the outer side of the placement table, the clamping component is also symmetrically arranged on the outer side of the limit component, and the clamping component is connected to the control component through the transmission component, and by setting the positioning mechanism and cooperating with the pressure component, the circuit board can be automatically positioned and fixed, thereby ensuring the stability of the circuit board during processing, reducing the number of manual operations, and ensuring work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of circuit boards, in particular to a circuit board welding positioning tool. Background Art

[0002] Circuit board, also known as printed circuit board, is an indispensable basic component in the electronics industry. The emergence of circuit board has played a revolutionary role in the development of modern electronic equipment. It makes the circuit miniaturized and intuitive, and plays an important role in the mass production of fixed circuits and the optimization of electrical appliance layout. When circuit boards are produced and processed, welding is usually required to fix the electronic components on the circuit boards.

[0003] After the circuit board is placed on the carrier board, it needs to be positioned manually. During the positioning process, multiple manual operations are required, the work efficiency is low, and the positioning accuracy is poor. Therefore, in view of the above situation, it is urgent to develop a circuit board welding positioning tool to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The purpose of the present invention is to provide a circuit board welding positioning tool to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A circuit board welding positioning tool comprises: a base; a placement table, the placement table is fixedly connected and arranged on the outer side of the top end of the base, and is used to support the circuit board; a pressure component, the pressure component is connected to the base, and is used to cooperate with the placement table to achieve longitudinal limitation of the circuit board; a positioning mechanism, the positioning mechanism is connected to the base and to the placement table, and is used to cooperate with the pressure component to achieve lateral limitation of the circuit board; wherein, the positioning mechanism comprises: a control component, a limiting component, a clamping component and a transmission component, the control component is arranged on the inner side of the base, the control component is connected to the limiting component symmetrically arranged on the outer side of the placement table, and is used to drive the limiting component to achieve lateral limitation of the circuit board located on the placement table, and the clamping component is also symmetrically arranged on the outer side of the limiting component, and the clamping component is connected to the control component through the transmission component, and is used to cooperate with the control component to achieve positioning of the circuit board located on the placement table.

[0007] As a further solution of the present invention: the control component includes: a lifting plate, a second telescopic part, a connecting box, a connecting chamber, a piston tube, a control rod and a second piston part. The lifting plate is arranged on the inner side of the base, and a second telescopic part is fixedly connected between the top end of the lifting plate and the base. A connecting box fixedly connected to the base is also arranged on the outer side of the top end of the lifting plate. Connecting chambers are symmetrically arranged on the inner side of the connecting box. The connecting chambers on both sides are connected to the limit assembly. A piston tube connected to the connecting chamber is also fixedly connected on the box wall at the bottom end of the connecting box. A second piston part is slidably connected to the inner side of the piston tube. A control rod is slidably connected to the inner side of the second piston part. The control rod is fixedly connected to the lifting plate and is connected to the second piston part through a spring. It is used to cooperate with the lifting and lowering of the lifting plate to realize the flow of air inside the connecting chamber and complete the driving of the limit assembly.

[0008] As a further solution of the present invention: the limiting assembly includes: a pressure-conducting tube, a movable plate, a connecting frame, a limiting plate, a roller and a second piston ring. The pressure-conducting tube is fixedly connected to the connecting box and is connected to the connecting cavity on the same side. A movable plate is sleeved on the outer side of the other end of the pressure-conducting tube, a connecting groove is arranged on the inner side of the movable plate, a second piston ring slidably connected to the connecting groove is fixedly connected to the outer wall of the pressure-conducting tube, the movable plate is slidably connected to the placing table, and a limiting plate is arranged on the outer side of the top end, a connecting frame is fixedly connected between the limiting plate and the movable plate, and a plurality of rollers are rotatably connected on the inner side of the limiting plate for cooperating with the movement of the movable plate to realize lateral limiting of the circuit board.

[0009] As a further solution of the present invention: the clamping assembly includes: a support frame, a skateboard, a piston groove and a splint, the support frame is fixedly connected to the grass at both ends of the base, the skateboard is slidably connected to the support frame, the outer sides of the opposite ends of the skateboards on both sides are fixedly connected with splints, and the inner side of the skateboard is provided with a piston groove connected to the transmission assembly, which is used to cooperate with the air delivered by the transmission assembly to realize the movement of the splint and complete the positioning of the circuit board.

[0010] As a further solution of the present invention: the transmission assembly includes: a transmission box, a control tube, an adjusting tube, a first piston member, a slide groove, a connecting rod and a synchronous plate. The transmission box is arranged on the outer side of the top of the lifting plate and is fixedly connected to the base. A plurality of control tubes are fixedly connected and arranged on the box wall of the transmission box close to the connecting box. A synchronous plate is arranged on the outer side of the control tube. The synchronous plate is slidably connected to the slide groove arranged on the inner wall of the base. A first piston member corresponding to the control tube is fixedly connected and arranged on the synchronous plate. A connecting rod is arranged between the synchronous plate and the lifting plate. One end of the connecting rod is rotatably connected to the lifting plate, and the other end is rotatably connected to the synchronous plate, which is used to cooperate with the lifting of the lifting plate to realize the flow of air inside the transmission box. An adjusting tube is fixedly connected and arranged on the box wall on the other side of the transmission box. The other end of the adjusting tube is arranged on the inner side of the piston groove, and a first piston ring slidably connected to the piston groove is fixedly connected and arranged on the outer wall, which is used to cooperate with the air flowing inside the transmission box to realize the movement of the slide plate.

[0011] As a further solution of the present invention: the pressure assembly includes: a movable frame, a pressure plate, balls and a first telescopic member, the movable frame is slidably connected and arranged on the outside of the base, a pressure plate is arranged between the movable frame and the placement table, the first telescopic member is fixedly connected and arranged between the pressure plate and the movable frame, and a plurality of balls are rollingly connected and arranged on the inner side of the other end of the pressure plate, which are used to cooperate with the extension and retraction of the first telescopic member to achieve longitudinal limitation of the circuit board on the placement table.

[0012] As a further solution of the present invention: an anti-skid pad is fixedly connected to the outer side of the bottom end of the base, and the anti-skid pad is made of rubber material.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] When the device is running, the circuit board is placed on the placement table, and the pressure component longitudinally limits the circuit board on the placement table so that the circuit board can be stably attached to the placement table. The control component first drives the limit component, and the limit component laterally limits the circuit board on the placement table. The control component continues to run, and the control component drives the clamping component through the transmission component. The clamping component cooperates with the limit component to complete the positioning of the circuit board, and the pressure component releases the fixation of the circuit board, and then performs corresponding welding on the circuit board. Compared with the prior art, the circuit board needs to be manually positioned after being placed on the carrier board. During the positioning process, manual operations are required many times, the work efficiency is low, and the positioning accuracy is poor. By setting a positioning mechanism and cooperating with the pressure component, the circuit board can be automatically positioned and fixed, which ensures the stability of the circuit board during processing, reduces the number of manual operations, and ensures work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the circuit board welding positioning tooling.

[0016] Figure 2 This is a schematic diagram of the structure of the limit assembly in the circuit board welding positioning tooling.

[0017] Figure 3 Top view of the fixture for soldering circuit boards.

[0018] Figure 4 This is a schematic diagram of the structure of the synchronization board in the circuit board welding positioning tooling.

[0019] In the figure: 1-base, 2-placing table, 3-circuit board, 4-movable frame, 5-pressing plate, 6-ball, 7-first telescopic member, 8-lifting plate, 9-second telescopic member, 10-control rod, 11-synchronizing plate, 12-connecting rod, 13-slideway, 14-first piston member, 15-transmission box, 16-control pipe, 17-adjusting pipe, 18-support frame, 19-slide plate, 20-piston groove, 21-first piston ring, 22-clamping plate, 23-second piston member, 24-connecting box, 25-connecting chamber, 26-piston tube, 27-pressure pipe, 28-movable plate, 29-connecting frame, 30-limiting plate, 31-roller, 32-second piston ring. DETAILED DESCRIPTION

[0020] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0021] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0022] See also Figure 1 In one embodiment of the present invention, a circuit board welding positioning tool comprises: a base 1; a placement table 2, the placement table 2 is fixedly connected and arranged on the outer side of the top end of the base 1, and is used to support the circuit board 3; a pressure component, the pressure component is connected to the base 1, and is used to cooperate with the placement table 2 to realize the longitudinal limitation of the circuit board 3; a positioning mechanism, the positioning mechanism is connected to the base 1 and to the placement table 2, and is used to cooperate with the pressure component to realize the lateral limitation of the circuit board 3; wherein, the positioning mechanism comprises: a control component, a limiting component, a clamping component and a transmission component, the control component is arranged on the inner side of the base 1, and the control component is connected to the limiting component symmetrically arranged on the outer side of the placement table 2, and is used to drive the limiting component to realize the lateral limitation of the circuit board 3 located on the placement table 2, and the clamping component is also symmetrically arranged on the outer side of the limiting component, and the clamping component is connected to the control component through the transmission component, and is used to cooperate with the control component to realize the positioning of the circuit board 3 located on the placement table 2.

[0023] In this embodiment, when the device is running, the circuit board 3 is placed on the placement table 2, and the pressure component longitudinally limits the circuit board 3 on the placement table 2 so that the circuit board 3 can be stably attached to the placement table 2. The control component first drives the limiting component, and the limiting component laterally limits the circuit board 2 on the placement table 2. The control component continues to operate, and the control component drives the clamping component through the transmission component, and the clamping component cooperates with the limiting component to complete the positioning of the circuit board 3. The pressure component releases the fixation of the circuit board 3, and then performs corresponding welding on the circuit board 3. Compared with the prior art, the present application requires manual positioning of the circuit board after the circuit board is placed on the carrier plate. During the positioning process, manual operations are required for multiple times, resulting in low work efficiency and poor positioning accuracy. By setting a positioning mechanism and cooperating with the pressure component, the circuit board 3 can be automatically positioned and fixed, thereby ensuring the stability of the circuit board 3 during processing, reducing the number of manual operations, and ensuring work efficiency.

[0024] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 , the control component includes: a lifting plate 8, a second telescopic member 9, a connecting box 24, a connecting chamber 25, a piston tube 26, a control rod 10 and a second piston member 23. The lifting plate 8 is arranged on the inner side of the base 1, and a second telescopic member 9 is fixedly connected between the top of the lifting plate 8 and the base 1. A connecting box 24 fixedly connected to the base 1 is also arranged on the outer side of the top of the lifting plate 8. The connecting chamber 25 is symmetrically arranged on the inner side of the connecting box 24. The connecting chambers 25 on both sides are connected to the limit assembly. A piston tube 26 connected to the connecting chamber 25 is also fixedly connected on the box wall at the bottom end of the connecting box 24. The second piston member 23 is slidably connected to the inner side of the piston tube 26. The second piston member 23 is slidably connected to the control rod 10. The control rod 10 is fixedly connected to the lifting plate 8 and is connected to the second piston member 23 through a spring, which is used to cooperate with the lifting and lowering of the lifting plate 8 to realize the flow of air inside the connecting chamber 25, thereby completing the driving of the limit assembly.

[0025] In this embodiment, the second telescopic member 9 is an electric telescopic rod, which is fixedly connected between the lifting plate 8 and the base 1. The second piston member 23 includes a second piston slidably connected to the inner side of the piston tube 26 and a second push rod fixedly connected to the second piston. The other end of the second push rod is slidably connected to the control rod 10. A spring is fixedly connected between the control rod 10 and the second push rod. The second telescopic member 9 drives the lifting plate 8 to lift and lower. The lifting plate 8 cooperates with the control rod 10 to realize the movement of the second piston inside the piston tube 26. The air inside the connecting cavity 25 enters the limiting assembly to complete the driving of the limiting assembly, and the lateral limiting of the circuit board 3 is realized from the front and rear sides. The lifting plate 8 can also complete the driving of the clamping assembly during the movement of the lifting plate 8. The clamping assembly completes the clamping and fixing of the circuit board 3 from the left and right sides, thereby completing the positioning of the circuit board 3. By setting the control assembly, the driving of the limiting assembly and the clamping assembly can be completed in sequence, thereby completing the positioning of the circuit board 3, ensuring the stability of the circuit board 3 during processing, and ensuring the accuracy of welding.

[0026] In one embodiment of the present invention, the limiting assembly includes: a pressure-conducting tube 27, a movable plate 28, a connecting frame 29, a limiting plate 30, a roller 31 and a second piston ring 32. The pressure-conducting tube 27 is fixedly connected to the connecting box 24 and is connected to the connecting cavity 25 on the same side. A movable plate 28 is sleeved on the outer side of the other end of the pressure-conducting tube 27, a connecting groove is provided on the inner side of the movable plate 28, a second piston ring 32 slidably connected to the connecting groove is fixedly connected to the outer wall of the pressure-conducting tube 27, the movable plate 28 is slidably connected to the placement table 2, and a limiting plate 30 is provided on the outer side of the top end, a connecting frame 29 is fixedly connected between the limiting plate 30 and the movable plate 28, and a plurality of rollers 31 are rotatably connected on the inner side of the limiting plate 30 to cooperate with the movement of the movable plate 28 to achieve lateral limiting of the circuit board 3.

[0027] In this embodiment, the limit plate 30 is symmetrically arranged on the outer side of the placement table 2. As the second piston moves, the air inside the connecting chamber 25 enters the inner side of the connecting groove along the pressure pipe 27, and cooperates with the second piston ring 32 to realize the relative movement of the movable plates 28 on both sides. The movable plates 28 cooperate with the connecting frame 29 to drive the limit plate 30 to move synchronously. The roller 31 on the limit plate 30 abuts against the front and rear side walls of the circuit board 3 to realize the preliminary limitation of the circuit board 3.

[0028] In one embodiment of the present invention, please refer to Figure 1 and Figure 3The clamping assembly includes: a support frame 18, a slide plate 19, a piston groove 20 and a clamping plate 22. The support frame 18 is fixedly connected to the wormwood at both ends of the base 1, and a slide plate 19 is slidably connected to the support frame 18. The outer sides of the slide plates 19 at opposite ends are fixedly connected with clamping plates 22. The inner side of the slide plate 19 is provided with a piston groove 20 connected to the transmission assembly, which is used to cooperate with the air delivered by the transmission assembly to realize the movement of the clamping plate 22 to complete the positioning of the circuit board 3.

[0029] In this embodiment, the transmission component can cooperate with the movement of the lifting plate 8 to inject air into the inner side of the piston groove 20, and realize the synchronous movement of the slide plates 19 on both sides. The slide plates 19 on both sides drive the clamping plate 22 to move, and complete the clamping and fixing of the circuit board 3 from the left and right sides, and cooperate with the limit plate 31 to complete the positioning of the circuit board 3. By setting a clamping component, it can cooperate with the limit component to realize the positioning of the circuit board 3, reduce the number of manual operations, and ensure work efficiency.

[0030] In one embodiment of the present invention, please refer to Figure 1 and Figure 4 The transmission assembly includes: a transmission box 15, a control tube 16, an adjustment tube 17, a first piston member 14, a slide groove 13, a connecting rod 12 and a synchronous plate 11. The transmission box 15 is arranged on the outer side of the top of the lifting plate 8 and is fixedly connected to the base 1. A plurality of control tubes 16 are fixedly connected to the box wall of the transmission box 15 near the connecting box 24. A synchronous plate 11 is arranged on the outer side of the control tube 16. The synchronous plate 11 is slidably connected to the slide groove 13 arranged on the inner wall of the base 1. The first piston corresponding to the control tube 16 is fixedly connected to the synchronous plate 11. Part 14, a connecting rod 12 is provided between the synchronous plate 11 and the lifting plate 8, one end of the connecting rod 12 is rotatably connected to the lifting plate 8, and the other end is rotatably connected to the synchronous plate 11, which is used to cooperate with the lifting and lowering of the lifting plate 8 to realize the flow of air inside the transmission box 15, and an adjusting pipe 17 is fixedly connected to the box wall on the other side of the transmission box 15, and the other end of the adjusting pipe 17 is arranged on the inner side of the piston groove 20, and a first piston ring 21 slidably connected to the piston groove 20 is fixedly connected to the outer wall, which is used to cooperate with the air flowing inside the transmission box 15 to realize the movement of the slide plate 19.

[0031] In this embodiment, the first piston member 14 includes a first push rod fixedly connected to the outside of the synchronization plate 11 and a first piston fixedly connected to the first push rod. The outer diameter of the first piston is equal to the inner diameter of the control tube 16. During the process of the lifting plate 8 driving the limit assembly, the lifting plate 8 cooperates with the connecting rod 12 to drive the synchronization plate 11 to move along the slide groove 13. The synchronization plate 11 drives the first piston to enter the inside of the control tube 16, drives the air inside the transmission box 15 to enter the inside of the regulating tube 17, and enters the inside of the piston groove 20, cooperates with the first piston ring 21, and realizes the movement of the slide plate 19. By setting the transmission assembly, it can cooperate with the control assembly to realize the driving of the clamping assembly, and then complete the positioning of the circuit board 3, thereby ensuring the stability of the circuit board 3 during processing.

[0032] In one embodiment of the present invention, the pressure assembly includes: a movable frame 4, a pressure plate 5, a ball bearing 6 and a first telescopic member 7. The movable frame 4 is slidably connected and arranged on the outside of the base 1. A pressure plate 5 is arranged between the movable frame 4 and the placement table 2. A first telescopic member 7 is fixedly connected between the pressure plate 5 and the movable frame 4. A plurality of ball bearings 6 are rollingly connected and arranged on the inner side of the other end of the pressure plate 5, which are used to cooperate with the extension and retraction of the first telescopic member 7 to achieve longitudinal limitation of the circuit board 3 on the placement table 2.

[0033] In this embodiment, the connecting end of the movable frame 4 and the base 1 is arranged on the outside of the bottom end of the pressure-conducting tube 27, and is slidably connected to the outer wall of the base 1. The first telescopic member 7 is an electric telescopic rod. When the circuit board 3 is placed on the placement table 2, the movable frame 4 drives the pressure plate 5 to move to the outside of the top of the placement table 2, and the first telescopic member 7 drives the pressure plate 5 to move downward. The ball 6 on the pressure plate 5 abuts against the circuit board 3, and cooperates with the placement table 2 to realize the longitudinal limitation of the circuit board 3, so that the circuit board 3 can fit tightly with the placement table 2, avoiding the problem of one end tilting during the positioning process, thereby ensuring the effectiveness of the positioning.

[0034] In one embodiment of the present invention, an anti-skid pad is fixedly connected to the outer side of the bottom end of the base 1, and the anti-skid pad is made of rubber material.

[0035] The circuit board welding positioning tool can automatically position and fix the circuit board 3 by setting a positioning mechanism and cooperating with a pressure component, thereby ensuring the stability of the circuit board 3 during processing, reducing the number of manual operations, and ensuring work efficiency.

[0036] The above are only preferred embodiments of the present invention. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A circuit board welding positioning tool, characterized in that: include: Base; A placement table, which is fixedly connected to the outer side of the top of the base and is used to support the circuit board; A pressure component, which is connected to the base and is used to cooperate with the placement table to achieve longitudinal limitation of the circuit board; a positioning mechanism, which is connected to the base and the placement table and is used to cooperate with the pressure component to achieve lateral limitation of the circuit board; wherein the positioning mechanism includes: a control component, a limiting component, a clamping component and a transmission component, wherein the control component is arranged on the inner side of the base, and the control component is connected to the limiting component symmetrically arranged on the outer side of the placement table, and is used to drive the limiting component to achieve lateral limitation of the circuit board placed on the placement table, and the clamping component is also symmetrically arranged on the outer side of the limiting component, and the clamping component is connected to the control component through the transmission component, and is used to cooperate with the control component to achieve positioning of the circuit board placed on the placement table.

2. The circuit board welding positioning tool according to claim 1, characterized in that: The control component includes: a lifting plate, a second telescopic part, a connecting box, a connecting chamber, a piston tube, a control rod and a second piston part. The lifting plate is arranged on the inner side of the base, and a second telescopic part is fixedly connected between the top end of the lifting plate and the base. A connecting box fixedly connected to the base is also arranged on the outer side of the top end of the lifting plate. Connecting chambers are symmetrically arranged on the inner side of the connecting box. The connecting chambers on both sides are connected to the limit assembly. A piston tube connected to the connecting chamber is also fixedly connected on the box wall at the bottom end of the connecting box. A second piston part is slidably connected to the inner side of the piston tube. A control rod is slidably connected to the inner side of the second piston part. The control rod is fixedly connected to the lifting plate and is connected to the second piston part through a spring. It is used to cooperate with the lifting and lowering of the lifting plate to realize the flow of air inside the connecting chamber and complete the driving of the limit assembly.

3. The circuit board welding positioning tool according to claim 2, characterized in that: The limiting assembly includes: a pressure-conducting tube, a movable plate, a connecting frame, a limiting plate, a roller and a second piston ring. The pressure-conducting tube is fixedly connected to the connecting box and is connected to the connecting cavity on the same side. A movable plate is sleeved on the outer side of the other end of the pressure-conducting tube, a connecting groove is arranged on the inner side of the movable plate, a second piston ring slidably connected to the connecting groove is fixedly connected to the outer wall of the pressure-conducting tube, the movable plate is slidably connected to the placing table, and a limiting plate is arranged on the outer side of the top end, a connecting frame is fixedly connected between the limiting plate and the movable plate, and a plurality of rollers are rotatably connected on the inner side of the limiting plate to cooperate with the movement of the movable plate to realize lateral limiting of the circuit board.

4. The circuit board welding positioning tool according to claim 3, characterized in that: The clamping assembly includes: a support frame, a slide plate, a piston groove and a splint. The support frame is fixedly connected to the grass at both ends of the base, and a slide plate is slidably connected to the support frame. The outer sides of the opposite ends of the slide plates on both sides are fixedly connected with splints, and the inner side of the slide plate is provided with a piston groove connected to the transmission assembly, which is used to cooperate with the air delivered by the transmission assembly to realize the movement of the splint and complete the positioning of the circuit board.

5. The circuit board welding positioning tool according to claim 4, characterized in that: The transmission assembly includes: a transmission box, a control pipe, an adjusting pipe, a first piston member, a slide groove, a connecting rod and a synchronous plate. The transmission box is arranged on the outer side of the top of the lifting plate and is fixedly connected to the base. A plurality of control pipes are fixedly connected and arranged on the box wall of the transmission box close to the connecting box. A synchronous plate is arranged on the outer side of the control pipe. The synchronous plate is slidably connected to the slide groove arranged on the inner wall of the base. A first piston member corresponding to the control pipe is fixedly connected and arranged on the synchronous plate. A connecting rod is arranged between the synchronous plate and the lifting plate. One end of the connecting rod is rotatably connected to the lifting plate, and the other end is rotatably connected to the synchronous plate, which is used to cooperate with the lifting of the lifting plate to realize the flow of air inside the transmission box. An adjusting pipe is fixedly connected and arranged on the box wall on the other side of the transmission box. The other end of the adjusting pipe is arranged on the inner side of the piston groove, and a first piston ring slidably connected to the piston groove is fixedly connected and arranged on the outer wall, which is used to cooperate with the air flowing inside the transmission box to realize the movement of the slide plate.

6. The circuit board welding positioning tool according to claim 1, characterized in that: The pressure assembly includes: a movable frame, a pressure plate, a ball and a first telescopic member. The movable frame is slidably connected and arranged on the outside of the base. A pressure plate is arranged between the movable frame and the placement table. The first telescopic member is fixedly connected and arranged between the pressure plate and the movable frame. A plurality of ball bearings are rollingly connected and arranged on the inner side of the other end of the pressure plate, which are used to cooperate with the extension and retraction of the first telescopic member to realize the longitudinal limitation of the circuit board placed on the placement table.

7. The circuit board welding positioning tool according to claim 1, characterized in that: An anti-skid pad is fixedly connected to the outer side of the bottom end of the base, and the anti-skid pad is made of rubber material.

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