Tin soldering machine and tin soldering method thereof

Abstract

The invention discloses a tin soldering machine, and relates to the technical field of tin soldering processing, the tin soldering machine comprises a clamping roller and a tin soldering module, the clamping roller is located below the tin soldering module, a groove is formed in the clamping roller, two clamping plates are movably installed in the groove, side grooves are formed in the two clamping plates, two ends of a workpiece are located in the side grooves, one end of the clamping roller is connected with a driving part, and the driving part works. The tin soldering module comprises a tin soldering head and an induction plate, the horizontal plane of the bottom end of the induction plate is lower than the horizontal plane of the bottom end of the tin soldering head, the tin soldering head and the induction plate swing independently, the swing amplitude of the induction plate is larger than that of the tin soldering head, two transverse rubber bodies are further installed in the side groove, and the transverse rubber bodies are located on the outer sides of the vertical rubber bodies. Two electromagnets are installed on the side wall of the side groove in a sliding mode, the transverse rubber body is installed at the front ends of the electromagnets, and two sets of main magnets are installed between the two electromagnets and are both electrified.

Description

Technical Field

[0001] The present invention belongs to the technical field of soldering processing, and particularly relates to a soldering machine and a soldering method thereof. Background Art

[0002] Soldering is to use liquid "solder" to wet the base material to achieve the joining effect. This phenomenon is just like water poured on the solid surface. The difference is that the solder will solidify into a joint as the temperature decreases. The soldering machine is a mechanical device equipped with a large-size transparent window, which can observe the entire soldering process and plays a very important role in product R & D and process curve optimization. The temperature control adopts a high-precision intuitive intelligent controller, which can be programmed to control the perfect curve, with accurate temperature control, simple parameter setting and easy operation. It can complete the soldering of single-sided and double-sided PCB boards in all package forms such as CHIP, SOP, PLCC, QFP, BGA, etc., and has extremely high working efficiency.

[0003] For example, a Chinese invention patent application with a publication number of CN115502509A discloses a rotating bracket of a soldering machine, including a bottom plate and a rotating assembly; the upper surface of the bottom plate is connected with a front-back sliding rail through two groups of brackets, a sliding platform that slides in cooperation with the two tracks of the sliding rail is arranged between the two tracks of the sliding rail, a lifting assembly is fixed on the top of the sliding platform, and the front of the lifting assembly is connected to the top of the rotating assembly through a fixed base; both the sliding rail and the lifting assembly are driven by electricity. The present invention solves the problem that the horizontal pins of small transformers cannot be effectively soldered due to angle problems, and there are often too much or too little solder flux during soldering, which affects the safety of the circuit.

[0004] Another example is a Chinese invention patent application with a publication number of CN109079272A, which discloses an automatic soldering device, including a workbench, a gantry is arranged on the workbench, a horizontal sliding rail is arranged at the lower end of the gantry, a sliding block is arranged on the horizontal sliding rail, a lifting rod is arranged at the lower end of the sliding block, a mounting plate is arranged at the lower end of the lifting rod, an electric soldering iron is arranged on the left side of the lower end of the mounting plate, a solder feeding tube is arranged on the right side of the lower end of the mounting plate, an image sensor is arranged at the front end of the mounting plate, a longitudinal sliding rail is arranged on the surface of the workbench, a placement fixture is arranged at the upper end of the longitudinal sliding rail, movable blocks are arranged on both sides of the longitudinal sliding rail, and the longitudinal sliding rail is movably connected to the placement fixture through the movable blocks. A solder feeding box is arranged at the upper end of the gantry, and the solder feeding box is connected to the solder feeding tube through a solder outlet conduit. A solder feeding switch is arranged on the solder feeding box, and a controller is arranged on the right side of the gantry. The controller is electrically connected to the movable block, the sliding block, the image sensor and the solder feeding switch. The present invention has high welding accuracy, fast welding speed, simple structure and convenient use.

[0005] The fixtures in the existing soldering machines use a pipeline-type loading and unloading method, with low efficiency. When the soldering machine is soldering, the solder joints cannot be too saturated, and if the solder points are too large, they are easily short-circuited with the adjacent solder points. Summary of the Invention

[0006] In view of the above problems in the prior art, the purpose of the present invention is to provide a soldering machine and a soldering method thereof, so that the fixture is fully utilized and the open circuit caused by over-large solder joints is avoided.

[0007] The present invention provides the following technical solutions:

[0008] A soldering machine includes pinch rollers and a soldering module. The pinch rollers are located below the soldering module. Grooves are provided on the pinch rollers. Two clamping plates are movably installed in the grooves. Side grooves are provided on the two clamping plates. Both ends of the workpiece are located in the side grooves. One end of the pinch roller is connected with a driving part. When the driving part works, the pinch roller rotates. The soldering module includes a soldering head and an induction plate. The horizontal plane at the bottom end of the induction plate is lower than the horizontal plane at the bottom end of the soldering head. The soldering head and the induction plate swing separately, and the swing amplitude of the induction plate is greater than that of the soldering head.

[0009] As a further technical solution, the soldering module is installed on a beam frame. The beam frame straddles the processing surface. The processing surface is welded to the top end of the base. The inside of the base is a cavity body for accommodating the control components of the soldering machine. Screw grooves are provided at the top end of the processing surface. Inner screws are installed in the screw grooves. One end of the inner screw passes through the processing surface and is connected with a side motor. The side motor is installed at one end of the processing surface. End mounting plates I and II are threadedly connected to the inner screw. The pinch rollers are movably connected to the end mounting plates I and II respectively.

[0010] As a further technical solution, a square block is welded to one end of the pinch roller. Card slots are provided on the four sides of the square block. A square mounting groove is provided inside the end mounting plate II. Four convex blocks are installed on the side wall of the square mounting groove. The four convex blocks respectively correspond to the four card slots. A threaded block body is welded to the other end of the pinch roller. A threaded groove is provided on the end mounting plate I. The threaded block body is located in the threaded groove.

[0011] As a further technical solution, an inner cavity is reserved in the pinch roller. A sliding groove is provided in the groove. The sliding groove communicates with the inner cavity. A main screw is rotatably installed in the inner cavity. A shaft body is installed at one end of the main screw. The shaft body passes through the pinch roller and the square block and is connected with a main motor. A motor hole is also provided on the end mounting plate II. The motor hole communicates with the square mounting groove. The main motor passes through the motor hole and is installed at one end of the end mounting plate II. Two groups of connecting parts are threadedly connected to the main screw. Each group of connecting parts consists of four sliding blocks. The four sliding blocks are circumferentially arranged on the main screw. The top of the sliding block passes through the sliding groove and is connected with the bottom end of the clamping plate.

[0012] As a further technical solution, vertical rubber bodies are installed in the side grooves. Springs are symmetrically installed inside the vertical rubber bodies. The other ends of the springs are connected with the inner walls of the side grooves.

[0013] As a further technical solution, two transverse rubber bodies are also installed in the side groove. The transverse rubber bodies are located outside the vertical rubber bodies. Two electromagnets are slidably installed on the side wall of the side groove. The transverse rubber bodies are installed at the front ends of the electromagnets. Two groups of main magnets are installed between the two electromagnets, and both groups of main magnets are charged.

[0014] As a further technical solution, a top beam is installed on the beam frame, and a push rod cylinder is installed on the top beam. The push rod cylinder is installed at the top end of the beam frame. Two end vertical plates are welded on the top beam. A soldering rod is rotatably connected between the end vertical plates. A mounting seat is installed on the soldering rod, and a soldering head is installed on the mounting seat.

[0015] As a further technical solution, an auxiliary shaft is also rotatably connected between the two end vertical plates. An auxiliary seat body is installed on the auxiliary shaft, and an induction plate is installed on the auxiliary seat body.

[0016] As a further technical solution, a solder feeding module is also installed in the auxiliary seat body. The solder feeding module is located inside the induction plate, and a sensor is also installed on the induction plate.

[0017] A soldering method of a soldering machine includes the following steps

[0018] Step 1: The main motor passes through the motor hole, the convex block fits tightly along the card slot, the pinch roller is kept balanced by an external force, the side motor drives the inner screw to rotate, so that the end mounting plate I moves towards the pinch roller, and the main motor drives the pinch roller to rotate, so that the other end of the pinch roller screws into the thread groove;

[0019] Step 2: Release the external force applied to the pinch roller;

[0020] Step 3: The main screw rotates, and the adjacent sliding blocks at the same horizontal position on the main screw move together with the sliding blocks, and the clamping plate moves along with the sliding blocks;

[0021] Step 4: The main magnets are charged, the electromagnets and the adjacent main magnets are in a state of mutual attraction, the electromagnets slide in the side groove, and drive the transverse rubber bodies to move towards the workpiece together;

[0022] Step 5: Rotate the auxiliary shaft to make the induction plate swing towards the middle. The push rod cylinder pushes down the top beam to make the induction plate move towards the workpiece and contact the workpiece. After the induction plate and the workpiece touch, the sensor works to make the soldering rod rotate, and the soldering head swings towards the middle. When the soldering head swings to the limit position, the distance between the bottom end of the soldering head and the bottom end of the induction plate is exactly the thickness of the solder joint, and the induction plate is located on one side of the solder joint.

[0023] The beneficial effects of the present invention are:

[0024] The workpiece is fixed by using a rotary clamping roller. Four grooves are opened on the clamping roller, and clamping plates are installed in the grooves. Four clamping positions are arranged in the circumferential direction of the clamping roller, and multiple workpieces can be soldered in one clamping, saving the time for loading and unloading the fixture and improving the soldering efficiency.

[0025] The clamping roller is movably connected to the end mounting plate one and the end mounting plate two respectively, facilitating the disassembly of the clamping roller 5.

[0026] A vertical rubber body is installed inside the clamping plate to ensure the end face of the workpiece. When clamping, if there is an error in the clamping stroke, it can prevent the workpiece from being damaged by a hard extrusion force and avoid cracks or fractures. In the side groove, the transverse rubber body is also moved and fixed through the cooperation of an electromagnet and a main magnet to improve the stability of the clamping plate for clamping the workpiece.

[0027] The rotating soldering rod realizes the adjustment of the soldering rod angle to ensure that it is adjusted to the optimal soldering angle. By setting an induction plate with a sensor, the soldering quality is improved, and adjacent solder joints are prevented from being short-circuited due to over-large solder joints. Description of the Drawings

[0028] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0029] Figure 1 is the axonometric structure schematic diagram of the present invention Figure 1 ;

[0030] Figure 2 is the axonometric structure schematic diagram of the present invention Figure 2 ;

[0031] Figure 3 is the front view structure schematic diagram of the present invention;

[0032] Figure 4 is the cross-sectional view structure schematic diagram of the clamping roller of the present invention;

[0033] Figure 5 is the left view structure schematic diagram of the end mounting plate two of the present invention;

[0034] Figure 6 is the right view structure schematic diagram of the end mounting plate one of the present invention;

[0035] Figure 7 is the structure schematic diagram of the installation position of the sliding block and the main screw of the present invention;

[0036] Figure 8 is of the present invention Figure 1 The enlarged structure schematic diagram of part A in;

[0037] Figure 9Schematic diagram of the internal structure of the side groove of the present invention;

[0038] Figure 10 Schematic diagram of the structure of the soldering module of the present invention;

[0039] Figure 11 Schematic diagram of the working state structure of the soldering module of the present invention.

[0040] In the figure, the markings are: 1, base; 2, machining surface; 3, inner screw; 4, screw groove; 5, pinch roller; 6, soldering module; 7, first end mounting plate; 8, side motor; 9, mounting seat; 10, soldering head; 11, soldering rod; 12, end vertical plate; 13, top beam; 14, second end mounting plate; 15, push rod cylinder; 16, beam frame; 17, clamping plate; 18, groove; 19, square mounting groove; 20, convex block; 21, main motor; 22, shaft body; 23, sliding groove; 24, inner cavity; 25, threaded block; 26, card slot; 27, square block; 28, main screw; 29, thread groove; 30, sliding block; 31, vertical rubber body; 32, spring; 33, electromagnet; 34, side groove; 35, transverse rubber body; 36, main magnet; 37, auxiliary shaft; 38, induction plate; 39, solder feeding module; 40, sensor; 42, auxiliary seat body; 41, motor hole. Detailed implementation manner

[0041] As Figure 1 shown, the present invention provides a soldering machine, including a pinch roller 5 and a soldering module 6. The pinch roller 5 is located below the soldering module 6. A groove 18 is provided on the pinch roller 5. Two clamping plates 17 are movably installed in the groove 18. Side grooves 34 are provided on the two clamping plates 17. Both ends of the workpiece are located in the side grooves 34. The soldering module 6 includes a soldering head 10. First, the workpiece is fixed by the two clamping plates 17, and then the soldering head 10 in the soldering module 6 solders the workpiece.

[0042] Embodiment 1

[0043] As Figures 1 - 7As shown, one end of the pinch roller 5 is connected with a driving part. When the driving part works, the pinch roller 5 rotates. Specifically, an inner cavity 24 is reserved in the pinch roller 5. A sliding groove 23 is formed in the groove 18, and the sliding groove 23 communicates with the inner cavity 24. The clamping plate 17 moves along the sliding groove 23. A main screw rod 28 is rotatably installed in the inner cavity 24. One end of the main screw rod 28 is provided with a shaft body 22. The shaft body 22 passes through the pinch roller 5, the square block 27 and is connected with the main motor 21. Through the shaft body 22 as an intermediate body, the torsional force of the main motor 21 acts on the main screw rod 28. A motor hole 41 is also formed in the end mounting plate two 14, and the motor hole 41 communicates with the square mounting groove 19. The main motor 21 passes through the motor hole 41 and is installed at one end of the end mounting plate two 14. The main motor 21 transmits the torsional force to the main screw rod 28 through the shaft body 22, so that the main screw rod 28 rotates in the inner cavity 24. Further, two groups of connecting parts are threadedly connected to the main screw rod 28. Each group of connecting parts consists of four sliding blocks 30, and the four sliding blocks 30 are circumferentially arranged on the main screw rod 28, and there is a gap between adjacent sliding blocks 30. The top of the sliding block 30 passes through the sliding groove 23 and is connected with the bottom end of the clamping plate 17. When the main screw rod 28 rotates, the clamping plate 17 moves together with the sliding block 30. In order to make the clamping plates 17 in the same groove 18 move relatively or away from each other, the thread directions of the adjacent sliding blocks 30 at the same horizontal position on the main screw rod 28 are opposite.

[0044] Furthermore, in order to facilitate the disassembly of the pinch roller 5, the pinch roller 5 is movably connected to the end mounting plate one 7 and the end mounting plate two 14 respectively. A square block 27 is welded to one end of the pinch roller 5, and clamping grooves 26 are arranged on four sides of the square block 27. Square mounting grooves 19 are formed inside the end mounting plate two 14, and four convex blocks 20 are installed on the side walls of the square mounting grooves 19. The four convex blocks 20 respectively correspond to the four clamping grooves 26. During installation, first insert the square block 27 into the square mounting groove 19. A threaded block body 25 is welded to the other end of the pinch roller 5, and a threaded groove 29 is formed in the end mounting plate one 7. The threaded block body 25 is located in the threaded groove 29. After one end of the pinch roller 5 is installed, then threadedly connect the threaded block body 25 at the other end of the pinch roller 5 with the threaded groove 29.

[0045] In order to facilitate the movement of the end mounting plate one 7, a screw rod groove 4 is formed at the top of the processing surface 2. An inner screw rod 3 is installed in the screw rod groove 4. One end of the inner screw rod 3 passes through the processing surface 2 and is connected with the side motor 8. The side motor 8 is installed at one end of the processing surface 2. The end mounting plate one 7 and the end mounting plate two 14 are threadedly connected to the inner screw rod 3. The end mounting plate two 14 is rotatably connected to the inner screw rod 3. The contact surface between the end mounting plate two 14 and the inner screw rod 3 is a smooth surface, and the contact surface between the end mounting plate one 7 and the inner screw rod 3 is a threaded surface.

[0046] During specific operation, the main motor 21 is passed through the motor hole 41. At this time, the convex block 20 fits tightly along the card slot 26 to complete the installation of one end of the pinch roller 5. Then, an external force is used to keep the pinch roller 5 balanced. The side motor 8 drives the inner screw 3 to rotate, causing the end mounting plate one 7 to move towards the pinch roller 5. At the same time, the main motor 21 drives the pinch roller 5 to rotate, causing the other end of the pinch roller 5 to be screwed into the thread groove 29.

[0047] Embodiment Two

[0048] Based on the above Embodiment One, in order to improve the stability of the clamping plate 17 for clamping workpieces, as Figure 9 shown, a vertical rubber body 31 is installed in the side groove 34. Springs 32 are symmetrically installed on the inner side of the vertical rubber body 31, and the other ends of the springs 32 are connected to the inner wall of the side groove 34. When the clamping plate 17 clamps a workpiece, both ends of the workpiece contact the vertical rubber body 31 to ensure the end face of the workpiece. When clamping, if there is an error in the clamping stroke, it can prevent the workpiece from being subjected to a hard extrusion force and thus avoid cracks or fractures.

[0049] Furthermore, two transverse rubber bodies 35 are also installed in the side groove 24 to fix the top and bottom of the workpiece through the relatively moving transverse rubber bodies 35. Specifically, the transverse rubber bodies 35 are located outside the vertical rubber body 31. Two electromagnets 33 are slidably installed on the side wall of the side groove 34. The transverse rubber bodies 35 are installed at the front ends of the electromagnets 33. Two sets of main magnets 36 are installed between the two electromagnets 33. Both sets of main magnets 36 are charged. The principle is that when the main magnets 36 are not charged, the electromagnets 33 and the adjacent main magnets are in a mutually repulsive state. On the contrary, when the main magnets 36 are charged, the electromagnets 33 and the adjacent main magnets are in a mutually attractive state. At this time, since the positions of the main magnets 36 are fixed, the electromagnets 33 slide in the side groove 34 and drive the transverse rubber bodies 35 to move towards the workpiece together.

[0050] Embodiment Three

[0051] Based on the above Embodiment Two, as Figure 8 、 Figure 10 and Figure 11As shown, the soldering module 6 is installed on the beam frame 16. The beam frame 16 straddles the processing surface 2, and the processing surface 2 is welded to the top end of the base 1. The interior of the base 1 is a cavity for accommodating the control components of the soldering machine. Through the control components, the linear movement of the beam frame 16 on the processing surface 2 is realized. A top beam 13 is installed on the beam frame 16, and a push rod cylinder 15 is installed on the top beam 13. The push rod cylinder 15 is installed at the top end of the beam frame 16. Two end vertical plates 12 are welded on the top beam 13. A soldering rod 11 is rotatably connected between the end vertical plates 12. A mounting seat 9 is installed on the soldering rod 11, and the soldering head 11 is installed on the mounting seat 9. By means of the push rod cylinder 15, the top beam 13 moves up and down, which is the Z-direction movement of the soldering head 11. By rotating the soldering rod 11, the angle of the soldering rod 11 is adjusted to ensure that it is adjusted to the best soldering angle.

[0052] In order to improve the soldering quality and avoid the open circuit of adjacent solder joints caused by too large solder joints, the soldering module 6 further includes an induction plate 38. A solder feeding module 39 is also installed in the auxiliary seat body 42. The solder feeding module 39 is located inside the induction plate 38. The horizontal plane at the bottom end of the induction plate 38 is lower than the horizontal plane at the bottom end of the soldering head 10. The soldering head 10 and the induction plate 38 swing independently. The swing amplitude of the induction plate 38 is greater than the swing amplitude of the soldering head 10.

[0053] The swing principle of the induction plate 38 is the same as that of the soldering head 10. An auxiliary shaft 37 is also rotatably connected between the two end vertical plates 12. An auxiliary seat body 42 is installed on the auxiliary shaft 37, and the induction plate 38 is installed on the auxiliary seat body 42.

[0054] Specifically, when soldering a certain point, first rotate the auxiliary shaft 37 to make the induction plate 38 swing towards the middle. Then, the push rod cylinder 15 pushes the top beam 13 downward to make the induction plate 13 move towards the workpiece and contact the workpiece. When the induction plate 13 touches the workpiece, the soldering rod 11 rotates to make the soldering head 10 swing towards the middle. When the soldering head 10 swings to the limit position, at this time, the distance between the bottom end of the soldering head 10 and the bottom end of the induction plate 13 is exactly the thickness of the solder joint. The induction plate 13 is located on one side of the solder joint to accurately control the solder joint and prevent the solder joints from fusing. Further, a sensor 40 is also installed on the induction plate 38 to facilitate better grasping of the contact time point between the induction plate 38 and the workpiece.

[0055] The working principle of the present invention in use is as follows: First, install the pinch roller 5. The main motor 21 passes through the motor hole 41, and the convex block 20 fits tightly along the card slot 26. By applying an external force, the pinch roller 5 is kept in balance. The side motor 8 drives the inner screw 3 to rotate, causing the end mounting plate 1 to move towards the pinch roller 5. The main motor 21 drives the pinch roller 5 to rotate, causing the other end of the pinch roller 5 to screw into the thread groove 29. Finally, release the external force applied to the pinch roller 5 (preferably, a manipulator is used to assist the pinch roller 5 to maintain balance), fix the workpiece through the two clamping plates 17. The main screw 28 rotates, and the adjacent sliding blocks 30 at the same horizontal position on the main screw 28 move together with the clamping plate 17. The main magnet 36 is electrified, and the electromagnet 33 and the adjacent main magnet are in a state of mutual attraction. The electromagnet 33 slides in the side groove 34 and drives the transverse rubber body 35 to move towards the workpiece together to complete the workpiece clamping. The soldering head 10 solders the workpiece. Rotate the auxiliary shaft 37 to make the induction plate 38 swing towards the middle. Then, the push rod cylinder 15 pushes down the top beam 13 to make the induction plate 13 move towards the workpiece and contact the workpiece. When the induction plate 13 touches the workpiece, the sensor 40 works, causing the soldering rod 11 to rotate and the soldering head 10 to swing towards the middle. When the soldering head 10 swings to the limit position, the distance between the bottom end of the soldering head 10 and the bottom end of the induction plate 13 is exactly the thickness of the solder joint, and the induction plate 13 is located on one side of the solder joint.

[0056] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soldering machine, comprising pinch rollers (5) and a soldering module (6), characterized in that, The pinch roller (5) is located below the soldering module (6). A groove (18) is formed in the pinch roller (5). Two clamping plates (17) are movably installed in the groove (18). Side grooves (34) are formed in the two clamping plates (17). Both ends of the workpiece are located in the side grooves (34). One end of the pinch roller (5) is connected to a driving part. When the driving part works, the pinch roller (5) rotates. The soldering module (6) includes a soldering head (10) and an induction plate (38). The horizontal plane at the bottom end of the induction plate (38) is lower than the horizontal plane at the bottom end of the soldering head (10). The soldering head (10) and the induction plate (38) swing separately. The swing amplitude of the induction plate (38) is greater than the swing amplitude of the soldering head (10).

2. The soldering machine according to claim 1, characterized in that, The soldering module (6) is installed on the beam frame (16). The beam frame (16) straddles the processing surface (2). The processing surface (2) is welded to the top end of the base (1). The base (1) is internally provided as a cavity for accommodating the control components of the soldering machine. A screw groove (4) is formed at the top end of the processing surface (2). An internal screw (3) is installed in the screw groove (4). One end of the internal screw (3) passes through the processing surface (2) and is connected to the side motor (8). The side motor (8) is installed at one end of the processing surface (2). An end mounting plate one (7) and an end mounting plate two (14) are threadedly connected to the internal screw (3). The pinch roller (5) is movably connected to the end mounting plate one (7) and the end mounting plate two (14) respectively.

3. The soldering machine according to claim 2, characterized in that, A square block (27) is welded to one end of the pinch roller (5). Card slots (26) are formed on the four sides of the square block (27). A square mounting groove (19) is formed on the inner side of the end mounting plate two (14). Four bumps (20) are installed on the side wall of the square mounting groove (19). The four bumps (20) respectively correspond to the four card slots (26). A threaded block body (25) is welded to the other end of the pinch roller (5). A threaded groove (29) is formed in the end mounting plate one (7). The threaded block body (25) is located in the threaded groove (29).

4. The soldering machine according to claim 3, wherein An inner cavity (24) is reserved in the pinch roller (5). A sliding groove (23) is formed in the groove (18). The sliding groove (23) communicates with the inner cavity (24). A main screw (28) is rotatably installed in the inner cavity (24). A shaft body (22) is installed at one end of the main screw (28). The shaft body (22) passes through the pinch roller (5) and the square block (27) and is connected to the main motor (21). A motor hole (41) is also formed in the end mounting plate two (14). The motor hole (41) communicates with the square mounting groove (19). The main motor (21) passes through the motor hole (41) and is installed at one end of the end mounting plate two (14). Two groups of connecting parts are threadedly connected to the main screw (28). Each group of connecting parts consists of four sliding blocks (30). The four sliding blocks (30) are circumferentially arranged on the main screw (28). The top of the sliding block (30) passes through the sliding groove (23) and is connected to the bottom end of the clamping plate (17).

5. The soldering machine according to claim 1, characterized in that, A vertical rubber body (31) is installed in the side groove (34). Springs (32) are symmetrically installed on the inner side of the vertical rubber body (31). The other ends of the springs (32) are connected to the inner wall of the side groove (34).

6. The soldering machine according to claim 5, wherein, Two transverse rubber bodies (35) are also installed in the side groove (24). The transverse rubber bodies (35) are located outside the vertical rubber body (31). Two electromagnets (33) are slidably installed on the side wall of the side groove (34). The transverse rubber bodies (35) are installed at the front ends of the electromagnets (33). Two groups of main magnets (36) are installed between the two electromagnets (33), and both groups of main magnets (36) are charged.

7. The soldering machine according to claim 2, wherein A top beam (13) is installed on the beam frame (16). A push rod cylinder (15) is installed on the top beam (13). The push rod cylinder (15) is installed at the top end of the beam frame (16). Two end vertical plates (12) are welded on the top beam (13). A soldering rod (11) is rotatably connected between the end vertical plates (12). A mounting seat (9) is installed on the soldering rod (11). A soldering head (11) is installed on the mounting seat (9).

8. The soldering machine according to claim 7, wherein, An auxiliary shaft (37) is also rotatably connected between the two end vertical plates (12). An auxiliary seat body (42) is installed on the auxiliary shaft (37). An induction plate (38) is installed on the auxiliary seat body (42).

9. The soldering machine according to claim 8, characterized in that, A solder feeding module (39) is also installed in the auxiliary seat body (42). The solder feeding module (39) is located inside the induction plate (38). A sensor (40) is also installed on the induction plate (38).

10. A soldering method for a soldering machine as described in any one of claims 1-9, characterized in that, Including the following steps S1. The main motor (21) passes through the motor hole (41), and the convex block (20) fits tightly along the card slot (26). By applying an external force, the pinch roller (5) is kept in balance. The side motor (8) drives the inner screw rod (3) to rotate, so that the end mounting plate one (7) moves towards the pinch roller (5). The main motor (21) drives the pinch roller (5) to rotate, so that the other end of the pinch roller (5) is screwed into the thread groove (29). S2. Release the external force applied to the pinch roller (5). S3. The main screw rod (28) rotates. The adjacent sliding blocks (30) at the same transverse position on the main screw rod (28) move together with the clamping plate (17). S4. The main magnet (36) is charged. The electromagnet (33) and the adjacent main magnet are in a state of mutual attraction. The electromagnet (33) slides in the side groove (34) and drives the transverse rubber body (35) to move towards the workpiece together. S5. Rotate the auxiliary shaft (37) to make the induction plate (38) swing towards the middle. The push rod cylinder (15) pushes down the top beam (13) to make the induction plate (13) move towards the workpiece and contact the workpiece. After the induction plate (13) and the workpiece touch, the sensor (40) works to make the soldering rod (11) rotate, and the soldering head (10) swings towards the middle. When the soldering head (10) swings to the limit position, the distance between the bottom end of the soldering head (10) and the bottom end of the induction plate (13) is exactly the thickness of the solder joint, and the induction plate (13) is located on one side of the solder joint.

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