A tin melting mechanism in an automatic tinning machine for heating wire processing

Abstract

The present invention belongs to the technical field of heating wire processing welding equipment, and in particular, relates to a tin melting mechanism in an automatic tinning machine for heating wire processing, including a welding table, and active rollers are symmetrically installed on the top of the welding table near the two sides, and a welding assembly is arranged between the two active rollers, and the welding assembly includes a welding frame. The present invention is provided with a cleaning roller. As the motor intermittently drives the missing gear to mesh with the gear ring, the missing gear can drive the gun head to rotate a certain angle by the transmission effect on the gear ring, thereby avoiding the overheating of the gun head due to long-term contact with the welding wire at the same position during a long welding process, and reducing the probability of weld nodules in the subsequent welding process. In addition, in the process of the output shaft driving the gun head to rotate, the cleaning roller can grind and clean the surface of the gun head, thereby ensuring the cleaning of the gun head while ensuring the welding effect of the gun head.

Description

Technical Field

[0001] The invention belongs to the technical field of heating wire processing and welding equipment, and in particular relates to a tin melting mechanism in an automatic tinning machine used for heating wire processing. Background Art

[0002] In the heating wire processing, soldering is mainly used to connect the heating wire with electrodes or other conductive parts. The heating wire is usually made of materials such as nickel-chromium alloy and iron-chromium-aluminum alloy, which have high resistivity and can generate heat. However, in order for the current to be effectively introduced into and out of the heating wire, a soldering machine is required to connect it to a suitable conductive part.

[0003] When the existing tinning machine is in use, the welding wire is automatically fed into the gun head part of the welding gun. However, since the welding gun head part of the existing tinning machine lacks a suitable cleaning device, some solder will remain on the gun head of the welding gun after use. In addition, since the welding wire is always in contact with the gun head of the welding gun from one direction and the gun head of the welding gun is fixed, during long-term use, the part of the gun head of the welding gun that is in contact with the welding wire for a long time is prone to overheating, which may lead to weld nodule defects in subsequent welding.

[0004] Therefore, it is necessary to invent a tin melting mechanism in an automatic tinning machine for heating wire processing to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides a tin melting mechanism in an automatic tinning machine for heating wire processing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tin melting mechanism in an automatic tinning machine for heating wire processing, comprising a welding table, active rollers are symmetrically installed on the top of the welding table near the two sides, a welding assembly is arranged between the two active rollers, and the welding assembly comprises a welding frame, the welding frame is fixedly installed on the top of the welding table, an electric slider is slidably installed on the front side of the welding frame along the vertical direction, a welding gun is installed on the front side of the electric slider, a gun head is rotatably installed on the bottom end of the welding gun, and the bottom end of the gun head is designed as a conical surface, a fixed plate is fixedly sleeved on the welding gun, and a material guide pipe is obliquely installed on one side of the fixed plate, The bottom end of the material guide tube is opposite to the conical surface at the bottom end of the welding gun, and a welding wire is inserted in the material guide tube, a mounting box is provided on the side of the gun head away from the material guide tube, the bottom of the mounting box and the side close to the gun head are both open, and a cleaning assembly is provided in the mounting box, a connecting plate is connected between the mounting box and the fixed plate, a motor is provided on the top of the mounting box, the motor is fixedly inserted through the fixed plate, the bottom end of the motor is transmission-connected with an output shaft, a missing gear is fixedly sleeved on the output shaft, a gear ring is meshed on one side of the missing gear, the gear ring is fixedly sleeved on the gun head, and a transmission assembly is connected between the bottom end of the output shaft and the cleaning assembly.

[0007] Furthermore, the cleaning assembly includes a truncated cone-shaped cleaning roller, and the side surface of the cleaning roller is parallel to the bottom side surface of the gun head, the top of the cleaning roller is fixedly connected to a fixed shaft, the top of the fixed shaft is rotatably connected to a swivel, an annular track is fixedly connected to the inner wall of the bottom of the installation box, the swivel is rotatably installed in the annular track, a screw is inserted through the vertical thread on the top of the swivel, an arc-shaped hole is penetrated at the position of the top of the installation box opposite to the swivel, and the center of the arc-shaped hole coincides with the center of the swivel, the screw is inserted into the arc-shaped hole, the top of the screw is fixedly connected to a pressure block, and the diameter of the pressure block is greater than the width of the arc-shaped hole.

[0008] Furthermore, the transmission assembly includes a transmission shaft, which is transmission-connected to the bottom end of the output shaft, and the transmission shaft rotates vertically and is inserted into the top of the installation box, and the transmission shaft is located at the axis center of the swivel, and the transmission shaft is located at the bottom of the swivel and is fixedly sleeved with a first gear, and a second gear is meshed with one side of the first gear, and the second gear is fixedly sleeved on the fixed shaft.

[0009] Furthermore, a connecting rod is connected between the position of the transmission shaft near the bottom end and the fixed shaft, and two ends of the connecting rod are rotatably sleeved on the transmission shaft and the fixed shaft respectively.

[0010] Furthermore, a plurality of strip grooves are evenly provided on the side of the cleaning roller, the top ends of the strip grooves are connected to the top ends of the cleaning rollers, and the depths of the strip grooves gradually become shallower from top to bottom, a scraper strip is slidably installed in the strip grooves, the thickness of the scraper strip gradually becomes thinner from top to bottom, and the side of the scraper strip away from the axis of the cleaning roller is parallel to the side of the cleaning roller, a supporting spring is fixedly connected between the bottom end of the scraper strip and the bottom groove wall of the strip groove, and in an initial state, the side of the scraper strip away from the axis of the cleaning roller can be flush with the side of the cleaning roller, the top end of the scraper strip is vertically fixedly connected to a pressure rod, and the bottom of the connecting rod near one end of the fixed shaft is fixedly connected to an arc block, the center of the arc block coincides with the axis of the fixed shaft, and the bottom of one end of the arc block is designed as an inclined surface.

[0011] Furthermore, a ball is installed on the top end of the pressure rod, and the ball can contact the inclined surface of the arc block.

[0012] Furthermore, the bottom of the installation box is higher than the bottom end of the gun head, and a curved insulation board is detachably installed on one side of the installation box close to the gun head. The bottom of the insulation board is higher than the conical surface at the bottom end of the gun head, and the gun head is located between the insulation board and the installation box.

[0013] Furthermore, a plurality of guide rollers are installed on the top of the welding platform at positions on both sides of the welding gun, and a heating wire to be welded is connected between the guide rollers and the two active rollers.

[0014] Technical effects and advantages of the present invention:

[0015] 1. The present invention is provided with a cleaning roller. As the motor intermittently drives the missing gear to rotate together, when the teeth on the missing gear mesh with the gear ring, the missing gear can drive the gun head to rotate together by a certain angle through the transmission effect on the gear ring, thereby avoiding the overheating phenomenon caused by the gun head being in contact with the welding wire for a long time at the same position during a long welding process, and reducing the probability of weld nodules in the subsequent welding process. In addition, in the process of the output shaft driving the gun head to rotate, the cleaning roller can grind and clean the surface of the gun head, thereby ensuring the cleaning of the gun head and the welding effect of the gun head at the same time;

[0016] 2. The present invention is provided with a scraper bar. When the cleaning roller cleans the more protruding welding slag on the conical surface of the gun head, as the cleaning roller rotates, when the pressure rod at the top of the scraper bar contacts the inclined surface of the arc block, the arc block can press the pressure rod downward, so that the scraper bar can move downward along the strip groove while slightly extending out of the strip groove, and then the protruding edge of the scraper bar is used to scrape off the more protruding welding slag remaining on the surface of the gun head, and then cooperate with the grinding effect of the cleaning roller on the surface of the gun head to improve the cleaning effect of the surface of the gun head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a three-dimensional schematic diagram of the structures of the welding gun, the gun head, the mounting box, the material guide tube, etc. in the present invention;

[0019] Figure 3 is a three-dimensional cross-sectional view of the installation box of the present invention;

[0020] Figure 4 It is a three-dimensional schematic diagram of the structures of the cleaning roller, the second gear, the connecting rod and the scraping strip in the present invention;

[0021] Figure 5 It is a three-dimensional schematic diagram of the scraper strip, the support spring, the pressure rod and the ball in the present invention.

[0022] In the figure: 1. welding table; 2. active roller; 3. welding frame; 4. electric slider; 5. welding gun; 6. gun head; 7. fixed plate; 8. material guide tube; 9. welding wire; 10. installation box; 11. cleaning assembly; 111. cleaning roller; 112. fixed shaft; 113. swivel; 114. ring track; 115. screw; 116. pressure block; 12. connecting plate; 13. motor; 14. output shaft; 15. missing gear; 16. gear ring; 17. transmission assembly; 171. transmission shaft; 172. first gear; 173. second gear; 18. connecting rod; 19. scraper; 20. support spring; 21. pressure rod; 22. arc block; 23. ball; 24. insulation board; 25. guide roller; 26. heating wire. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0024] The present invention provides Figures 1 to 5A tin melting mechanism in an automatic tinning machine for heating wire processing shown in the figure comprises a welding table 1, active rollers 2 are symmetrically installed on the top of the welding table 1 near the two sides, a welding assembly is arranged between the two active rollers 2, and the welding assembly comprises a welding frame 3, the welding frame 3 is fixedly installed on the top of the welding table 1, an electric slider 4 is slidably installed in the front side of the welding frame 3 along the vertical direction, a welding gun 5 is installed on the front side of the electric slider 4, a gun head 6 is rotatably installed at the bottom end of the welding gun 5, and the bottom end of the gun head 6 is designed as a conical surface, a fixed plate 7 is fixedly sleeved on the welding gun 5, a material guide tube 8 is obliquely installed on one side of the fixed plate 7, the bottom end of the material guide tube 8 is opposite to the conical surface of the bottom end of the welding gun 5, and a welding wire 9 is inserted in the material guide tube 8, and a mounting is arranged on the side of the gun head 6 away from the material guide tube 8 Box 10, the bottom of the installation box 10 and the side close to the gun head 6 are both open designs, and a cleaning component 11 is arranged in the installation box 10, a connecting plate 12 is connected between the installation box 10 and the fixed plate 7, a motor 13 is arranged on the top of the installation box 10, the motor 13 is fixedly inserted into the fixed plate 7, the bottom end of the motor 13 is transmission-connected with an output shaft 14, a missing gear 15 is fixedly sleeved on the output shaft 14, a gear ring 16 is meshed on one side of the missing gear 15, and the gear ring 16 is fixedly sleeved on the gun head 6, a transmission component 17 is connected between the bottom end of the output shaft 14 and the cleaning component 11, a plurality of guide rollers 25 are installed at the top of the welding table 1 at the positions on both sides of the welding gun 5, and a heating wire 26 to be welded is inserted between the guide rollers 25 and the two active rollers 2;

[0025] Before welding, first place the heating wire 26 to be welded as Figure 1 The welding wire 9 is connected to a plurality of guide rollers 25 and two active rollers 2 in a manner, and the welding wire 9 is passed through the guide tube 8. During welding, as the two active rollers 2 rotate, the heating wire 26 can slowly pass through the bottom of the welding gun 5. At this time, as the welding gun 5 is started, the welding wire 9 can be automatically transported to the gun head 6 of the welding gun 5. When the welding wire 9 contacts the gun head 6 of the welding gun 5, the welding wire 9 can be heated and melted by the gun head 6 and drip onto the position to be welded on the heating wire 26, thereby completing the welding operation on the heating wire 26. During the welding time interval of the heating wire 26, In the embodiment, as the motor 13 is started, the motor 13 can drive the toothed ring 16 to rotate through the output shaft 14, and when the teeth on the missing gear 15 are meshed with the toothed ring 16, the missing gear 15 can drive the gun head 6 to rotate by a certain angle through the transmission effect on the toothed ring 16, so that the position where the gun head 6 originally contacts with the welding wire 9 can be turned to other directions, thereby avoiding the overheating of the gun head 6 caused by the long-term contact with the welding wire 9 at the same position during a long welding process, and reducing the probability of weld nodules in the subsequent welding process;

[0026] In addition, when the output shaft 14 drives the gun head 6 to rotate, the cleaning component 11 can grind and clean the surface of the gun head 6 under the drive of the transmission component 17, thereby ensuring the cleaning of the gun head 6 while ensuring the welding effect of the gun head 6.

[0027] like Figures 2 to 4 As shown, the cleaning assembly 11 includes a truncated cone-shaped cleaning roller 111, and the side surface of the cleaning roller 111 is parallel to the bottom side surface of the gun head 6, the top of the cleaning roller 111 is fixedly connected to a fixed shaft 112, the top of the fixed shaft 112 is rotatably connected to a swivel 113, an annular track 114 is fixedly connected to the inner wall of the bottom of the installation box 10, the swivel 113 is rotatably installed in the annular track 114, the top vertical thread of the swivel 113 is penetrated and inserted with a screw 115, an arc hole is penetrated at the position of the top of the installation box 10 facing the swivel 113, and the center of the arc hole coincides with the center of the swivel 113, the screw 115 is penetrated and inserted into the arc hole, the top of the screw 115 is fixedly connected to a pressing block 116, and the diameter of the pressing block 116 is greater than the width of the arc hole;

[0028] The transmission assembly 17 includes a transmission shaft 171, which is transmission-connected to the bottom end of the output shaft 14, and the transmission shaft 171 is vertically rotated and inserted into the top of the installation box 10, and the transmission shaft 171 is located at the axis of the rotating ring 113, and the transmission shaft 171 is located at the bottom of the rotating ring 113. The position of the transmission shaft 171 is fixedly sleeved with a first gear 172, and one side of the first gear 172 is meshed with a second gear 173, and the second gear 173 is fixedly sleeved on the fixed shaft 112;

[0029] By providing the cleaning roller 111, before using the welding gun 5, the screw 115 is first loosened by the pressing block 116, and then the screw 115 is moved to drive the rotating ring 113 to rotate. As the rotating ring 113 moves, the cleaning roller 111 is also driven by the rotating ring 113 to gradually approach the gun head 6 from the side. When the surface of the cleaning roller 111 is close to the surface of the gun head 6, the screw 115 is stopped and the pressing block 116 is tightened to press it together with the top of the installation box 10, thereby locking the rotating ring 113.

[0030] During the intermittent period of welding of the welding gun 5, the motor 13 can also be started intermittently, and as the motor 13 is started, the motor 13 can drive the transmission shaft 171 to rotate through the output shaft 14, and as the output shaft 14 rotates, the missing gear 15 on the output shaft 14 can rotate together with the output shaft 14, and when the teeth on the missing gear 15 are meshed with the gear ring 16, the missing gear 15 can drive the gun head 6 to rotate a certain angle through the transmission effect on the gear ring 16, so that the position where the gun head 6 originally contacts with the welding wire 9 can be turned to other directions, thereby avoiding the overheating phenomenon caused by the gun head 6 being in contact with the welding wire 9 for a long time at the same position during a long welding process, and reducing the probability of weld nodules in the subsequent welding process;

[0031] At the same time, during the rotation of the output shaft 14, the transmission shaft 171 can always keep rotating driven by the output shaft 14. When the gun head 6 rotates a certain angle under the cooperation of the missing gear 15 and the gear ring 16, when the position where the gun head 6 originally contacted the welding wire 9 rotates to a position opposite to the cleaning roller 111, as the transmission shaft 171 rotates, the transmission shaft 171 can drive the fixed shaft 112 and the cleaning roller 111 to rotate through the cooperation of the first gear 172 and the second gear 173. Subsequently, the rotating cleaning roller 111 can rotate along the surface of the gun head 6, thereby grinding off the protruding solder attached to the surface of the gun head 6, thereby ensuring the cleaning of the gun head 6 while ensuring the welding quality.

[0032] like Figure 3 and Figure 4 As shown, a connecting rod 18 is connected between the position of the transmission shaft 171 near the bottom end and the fixed shaft 112, and both ends of the connecting rod 18 are rotatably sleeved on the transmission shaft 171 and the fixed shaft 112 respectively;

[0033] By providing the connecting rod 18 , the existence of the connecting rod 18 can increase the stability of the meshing between the first gear 172 and the second gear 173 , thereby ensuring that the fixed shaft 112 can rotate stably under the transmission action of the transmission shaft 171 .

[0034] like Figures 3 to 5As shown, a plurality of strip grooves are evenly provided on the side of the cleaning roller 111, the top of the strip groove is connected to the top of the cleaning roller 111, and the depth of the strip groove gradually becomes shallower from top to bottom, a scraper strip 19 is slidably installed in the strip groove, the thickness of the scraper strip 19 gradually becomes thinner from top to bottom, and the side of the scraper strip 19 away from the axis of the cleaning roller 111 is parallel to the side of the cleaning roller 111, a support spring 20 is fixedly connected between the bottom end of the scraper strip 19 and the bottom groove wall of the strip groove, and in the initial state, the side of the scraper strip 19 away from the axis of the cleaning roller 111 can be flush with the side of the cleaning roller 111, the top of the scraper strip 19 is vertically fixedly connected with a pressure rod 21, and the bottom of the connecting rod 18 near one end of the fixed shaft 112 is fixedly connected with an arc block 22, the center of the arc block 22 coincides with the axis of the fixed shaft 112, and the bottom of one end of the arc block 22 is designed as an inclined surface;

[0035] By providing the scraper strip 19, when the cleaning roller 111 cleans the more protruding welding slag on the conical surface of the gun head 6, as the cleaning roller 111 rotates, the scraper strip 19 can also move with the cleaning roller 111. When the pressure rod 21 at the top of the scraper strip 19 contacts the inclined surface of the arc block 22, the arc block 22 can press the pressure rod 21 downward, so that the scraper strip 19 can move downward along the strip groove under the pressure of the pressure rod 21 and compress the supporting spring 20. As the scraper strip 19 moves downward, since the strip groove gradually becomes shallower from top to bottom, the scraper strip 19 can slightly extend out of the strip groove and scrape along the conical surface of the gun head 6 of the welding gun 5, so that the protruding edge of the scraper strip 19 can scrape off the more protruding welding slag remaining on the surface of the gun head 6, and then cooperate with the grinding effect of the cleaning roller 111 on the surface of the gun head 6 to improve the cleaning effect on the surface of the gun head 6.

[0036] like Figure 5 As shown, a ball 23 is installed at the top of the pressure rod 21, and the ball 23 can contact the inclined surface of the arc block 22;

[0037] By providing the ball bearing 23 , when the pressure rod 21 is in contact with the arc block 22 , the ball bearing 23 can reduce the friction between the arc block 22 at the top of the pressure rod 21 , so that the pressure rod 21 can move more smoothly against the arc block 22 .

[0038] As shown in the figure, the bottom of the installation box 10 is higher than the bottom end of the gun head 6, and a curved insulation board 24 is detachably installed on one side of the installation box 10 close to the gun head 6. The bottom of the insulation board 24 is higher than the conical surface at the bottom end of the gun head 6, and the gun head 6 is located between the insulation board 24 and the installation box 10;

[0039] By providing the heat preservation plate 24 , during the welding process, when the welding operation is temporarily stopped, the heat preservation plate 24 can improve the heat preservation effect on the gun head 6 , thereby preventing the welding gun 5 from cooling down too quickly.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A tin melting mechanism in an automatic tinning machine for heating wire processing, comprising a soldering table (1), characterized in that: Active rollers (2) are symmetrically mounted near both sides of the top of the welding table (1), a welding assembly is arranged between the two active rollers (2), and the welding assembly comprises a welding frame (3), the welding frame (3) is fixedly mounted on the top of the welding table (1), an electric slider (4) is slidably mounted on the front side of the welding frame (3) in a vertical direction, a welding gun (5) is mounted on the front side of the electric slider (4), a gun head (6) is rotatably mounted on the bottom end of the welding gun (5), and the bottom end of the gun head (6) is designed as a conical surface, a fixed plate (7) is fixedly sleeved on the welding gun (5), a material guide tube (8) is obliquely mounted on one side of the fixed plate (7), the bottom end of the material guide tube (8) is opposite to the conical surface of the bottom end of the welding gun (5), a welding wire (9) is inserted into the material guide tube (8), and the gun head (6) is away from the guide tube. A mounting box (10) is provided on one side of the material tube (8), the bottom of the mounting box (10) and the side close to the gun head (6) are both of an open design, and a cleaning assembly (11) is provided in the mounting box (10), a connecting plate (12) is connected between the mounting box (10) and the fixing plate (7), a motor (13) is provided on the top of the mounting box (10), the motor (13) is fixedly inserted through the fixing plate (7), the bottom end of the motor (13) is transmission-connected to an output shaft (14), a missing gear (15) is fixedly sleeved on the output shaft (14), one side of the missing gear (15) is meshed with a gear ring (16), the gear ring (16) is fixedly sleeved on the gun head (6), and a transmission assembly (17) is connected between the bottom end of the output shaft (14) and the cleaning assembly (11); The cleaning assembly (11) comprises a truncated cone-shaped cleaning roller (111), and the side surface of the cleaning roller (111) is parallel to the bottom side surface of the gun head (6); the top of the cleaning roller (111) is fixedly connected to a fixed shaft (112), and the top of the fixed shaft (112) is rotatably connected to a swivel (113); an annular track (114) is fixedly connected to the inner wall of the bottom of the installation box (10), and the swivel (113) is rotatably installed in the annular track (114); a screw rod (115) is inserted and penetrated through a vertical thread on the top of the swivel (113); an arc-shaped hole is penetrated and opened at a position of the top of the installation box (10) directly opposite to the swivel (113), and the center of the arc-shaped hole coincides with the center of the swivel (113); the screw rod (115) is inserted and penetrated into the arc-shaped hole; the top of the screw rod (115) is fixedly connected to a pressing block (116), and the diameter of the pressing block (116) is greater than the width of the arc-shaped hole; The transmission assembly (17) comprises a transmission shaft (171), the transmission shaft (171) being transmission-connected to the bottom end of the output shaft (14), the transmission shaft (171) being vertically rotatable and inserted into the top of the installation box (10), and the transmission shaft (171) being located at the axis of the rotating ring (113), the transmission shaft (171) being fixedly sleeved with a first gear (172) at a position at the bottom of the rotating ring (113), a second gear (173) being meshed with one side of the first gear (172), and the second gear (173) being fixedly sleeved on the fixed shaft (112).

2. The tin melting mechanism in the automatic tinning machine for heating wire processing according to claim 1 is characterized in that: A connecting rod (18) is connected between the position of the transmission shaft (171) close to the bottom end and the fixed shaft (112), and two ends of the connecting rod (18) are rotatably sleeved on the transmission shaft (171) and the fixed shaft (112), respectively.

3. The tin melting mechanism in the automatic tinning machine for heating wire processing according to claim 2 is characterized in that: A plurality of strip grooves are evenly formed on the side of the cleaning roller (111), the top of each strip groove is connected to the top of the cleaning roller (111), and the depth of each strip groove gradually decreases from top to bottom. A scraper strip (19) is slidably mounted in each strip groove, and the thickness of each scraper strip (19) gradually decreases from top to bottom. The side of each scraper strip (19) away from the axis of the cleaning roller (111) is parallel to the side of the cleaning roller (111), and the bottom end of each scraper strip (19) is fixedly connected to the bottom groove wall of the strip groove. A support spring (20) is provided, and in an initial state, the side of the scraper strip (19) away from the axis of the cleaning roller (111) can be flush with the side of the cleaning roller (111), the top of the scraper strip (19) is vertically fixedly connected to a pressure rod (21), the bottom of the connecting rod (18) close to one end of the fixed shaft (112) is fixedly connected to an arc block (22), the center of the arc block (22) coincides with the axis of the fixed shaft (112), and the bottom of one end of the arc block (22) is designed as an inclined surface.

4. The tin melting mechanism in the automatic tinning machine for heating wire processing according to claim 3 is characterized in that: A ball (23) is installed on the top end of the pressure rod (21), and the ball (23) can contact the inclined surface of the arc block (22).

5. The tin melting mechanism in the automatic tinning machine for heating wire processing according to claim 4 is characterized in that: The bottom of the installation box (10) is higher than the bottom end of the gun head (6); a curved insulation board (24) is detachably mounted on a side of the installation box (10) close to the gun head (6); the bottom of the insulation board (24) is higher than the conical surface at the bottom end of the gun head (6); and the gun head (6) is located between the insulation board (24) and the installation box (10).

6. The tin melting mechanism in the automatic tinning machine for heating wire processing according to claim 1 is characterized in that: A plurality of guide rollers (25) are installed on the top of the welding table (1) at positions on both sides of the welding gun (5), and a heating wire (26) to be welded is connected between the guide rollers (25) and the two active rollers (2).

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