A tin dipping machine for magnetic rings and wire bars

By designing a tin-dipping machine for magnetic rings and wire bars, and optimizing the translation, lifting, and flipping mechanisms and components, the problems of complex structure and low efficiency of existing tin-dipping machines have been solved, achieving stable jig flipping and efficient tin-dipping processing.

CN224487916UActive Publication Date: 2026-07-14SUZHOU XIEHE AUTOMATION TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU XIEHE AUTOMATION TECH CO LTD
Filing Date
2025-05-28
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing tin-dipping machines are inefficient because they have complex structures and cannot achieve fixture flipping when processing magnetic rings and wire bars.

Method used

A soldering machine with translation, lifting, and flipping mechanisms was designed. The fixture flipping is achieved through the extension arm and the clamp rotation shaft. Combined with the optimized layout of flux dipping, drying, and solder pot components, the structure is simplified and efficiency is improved.

Benefits of technology

It reduces structural complexity, improves work efficiency, and enables stable jig flipping and efficient tin-dip treatment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a kind of for magnetic ring and wire bar's tin dipping machine, including machine table, translation mechanism, lifting mechanism, turnover mechanism, jig clamp, jig body, flux dipping assembly, flux drying assembly, tin dipping tin pot assembly, flux dipping assembly, flux drying assembly and tin dipping tin pot assembly are arranged in the mobile path below of jig body in turn, turnover mechanism includes extension arm, turnover driving part, clamp rotary shaft, jig clamp includes jig limit ring, jig chuck, and jig chuck is connected with clamp rotary shaft. The utility model is through extension arm and the clamp rotary shaft and jig chuck of setting in the end of extension arm, it is convenient to avoid when magnetic ring and wire bar are turned over, the stroke of smaller lifting mechanism can be set, reduce structural complexity, improve work efficiency;Jig chuck is used with jig limit ring cooperation, realize the release of jig body, simple structure, large bearing capacity.
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Description

Technical Field

[0001] This utility model relates to a tinning machine, and more particularly to a tinning machine for magnetic rings and wire rods. Background Technology

[0002] Magnetic rings and rods are widely used as important electronic components. They are primarily composed of coils, and the ends of these coils need to be tinned to connect with other electronic components. Current tinning methods use tinning machines to tin the coil ends. To improve efficiency, existing methods use a robotic arm to hold the fixture during tinning; however, this requires a large-stroke avoidance lifting assembly to prevent the coil from colliding with other equipment during transfer, making the structure more complex. Furthermore, the fixture cannot be flipped to tin the other end. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a tinning machine for magnetic rings and wire bars.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a tin-dipping machine for magnetic rings and wire rods, including a machine base, a translation mechanism disposed on the machine base, a lifting mechanism disposed on the translation mechanism, a flipping mechanism disposed on the lifting mechanism, a jig fixture disposed on the flipping mechanism, a jig body clamped on the jig fixture, a flux-dipping component disposed on the machine base, a flux-drying component disposed on the machine base, and a tin-dipping pot assembly disposed on the machine base. The flux-dipping component, the flux-drying component, and the tin-dipping pot assembly are arranged sequentially below the moving path of the jig body. The flipping mechanism includes two parallel downward extending arms and is equipped with... The fixture includes a flipping drive on the extension arm and a clamping shaft rotatably connected to the end of the extension arm. The clamping shaft is driven by the flipping drive and the axis of the clamping shaft is horizontal. The fixture includes a clamping limiting ring disposed on the opposite side of the end of the extension arm and a fixture chuck rotatably connected to the opposite side of the end of the extension arm. The fixture chuck is connected to the clamping shaft and is located inside the clamping limiting ring. The fixture chuck is cylindrical and has a receiving groove extending to one side of its circumference at its end. The circumference of the clamping limiting ring has an avoidance notch. The receiving groove has a pick-up and put-out position collinear with the avoidance notch and a soldering position offset from the avoidance notch.

[0005] As a further improvement to this design, the flipping drive includes a servo motor mounted on one of the extension arms, a drive shaft with both ends rotatably connected to the extension arm, an active pulley mounted on the drive shaft, a passive pulley mounted on the clamp rotation shaft, and a synchronous belt connecting the active pulley and the passive pulley.

[0006] As a further improvement to this design, the fixture rotation shaft is a hollow shaft, and a clamping cylinder is provided on the fixture rotation shaft. The cylinder rod of the clamping cylinder is provided with a tip that passes through the fixture rotation shaft. The tip of the tip extends into the receiving groove, and the end of the fixture body that extends into the receiving groove is provided with a positioning hole that mates with the tip.

[0007] As a further improvement to this design, the translation mechanism includes a translation frame mounted on the machine base, a translation slide rail horizontally mounted on the translation frame, a translation beam slidably engaged with the translation slide rail, and a translation drive mechanism mounted on the translation frame for driving the translation beam to move along the translation slide rail.

[0008] As a further improvement to this design, the translation drive mechanism includes a drive shaft located at the tail end of the translation frame, a main synchronous pulley located at the end of the drive shaft, a driven synchronous pulley located at the head of the translation frame, a translation drive belt connecting the main synchronous pulley and the driven synchronous pulley on the same side of the translation frame, and a translation motor located on the translation frame and driven by one of the drive shafts.

[0009] As a further improvement to this design, the lifting mechanism includes a lifting motor mounted on the translation beam, a lifting screw rotatably connected to the translation beam, a lifting slide rail mounted on the translation beam, and a lifting seat cooperating with the lifting slide rail. The lifting seat and the lifting screw are engaged by a nut, and the lifting motor is drivenly connected to the lifting screw.

[0010] As a further improvement to this design, the flux dispensing assembly includes a flux frame mounted on the machine base, a flux tank mounted on the flux frame, a flux cover cylinder mounted on the flux frame, and a flux cover plate mounted on the flux cover cylinder. The flux cover plate moves horizontally under the drive of the flux cover cylinder. The flux cover plate has a covering position that completely covers the top opening of the flux tank and a clearance position that is completely offset from the top opening of the flux tank.

[0011] As a further improvement to this design, the flux tank includes an outer tank and an inner tank disposed within the outer tank. A liquid level sensor is provided in the outer tank, and a circulation hole is provided in the inner tank. The circulation hole is connected to the flux circulation system, and the outer tank is provided with a return hole that communicates with the flux circulation system.

[0012] As a further improvement to this design, the flux drying assembly includes a drying rack on the machine base, a drying trough on the top of the drying rack, a uniform air distribution plate and a cleaning mesh plate inside the drying trough, and a hot air gun at the bottom of the drying trough. The cleaning mesh plate and the uniform air distribution plate divide the drying trough into a drying chamber, a sandwich layer, and a hot air chamber from top to bottom. The uniform air distribution plate has through holes distributed on it, and the diameter of the through holes is inversely proportional to the distance from the outlet of the hot air gun.

[0013] As a further improvement to this design, the machine is provided with two tin-immersion pot assemblies, one of which provides high-temperature tin. The tin-immersion pot assembly includes a tin pot body disposed on the machine, a slag trough disposed at one end of the tin pot body, a slag stand disposed on one side of the tin pot body, a slag scraper that slides horizontally along the slag stand, a slag scraping drive unit disposed on the slag stand for driving the slag scraper, and a tin wire supply machine disposed on the machine.

[0014] The beneficial effects of this utility model are: the extension arm and the clamp rotation shaft and jig chuck set at the end of the extension arm facilitate the avoidance of the magnetic ring and wire bar when flipping, the stroke of the lifting mechanism can be set to be smaller, the structural complexity is reduced, and the work efficiency is improved; the jig chuck is used in conjunction with the clamp limit ring to realize the release of the jig body, the structure is simple and the load-bearing capacity is large. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the translation mechanism of this utility model.

[0018] Figure 3 This is a cross-sectional schematic diagram of the flipping mechanism and lifting seat of this utility model.

[0019] Figure 4 This utility model is in Figure 3 Enlarged schematic diagram at point I in the middle.

[0020] Figure 5 This is a three-dimensional structural diagram of the flux drying component and flux dipping component of this utility model.

[0021] Figure 6 This is a schematic cross-sectional view of the flux drying assembly and flux dipping assembly of this utility model.

[0022] Figure 7This is a partial structural diagram of the flux drying component of this utility model.

[0023] Figure 8 This is a three-dimensional structural diagram of the tin-immersion pot assembly of this utility model.

[0024] In the diagram: 1. Machine base; 2. Flux dipping assembly; 20. Flux frame; 21. Flux cover plate; 22. Flux tank; 220. Outer tank; 221. Inner tank; 222. Circulation hole; 223. Return hole; 23. Flux cover cylinder; 24. Liquid level sensor; 3. Flux drying assembly; 30. Drying rack; 31. Hot air gun; 32. Drying tank; 33. Cleaning mesh plate; 34. Air distribution plate; 35. Through hole; 36. Drying chamber; 37. Interlayer; 38. Hot air chamber; 4. Solder pot assembly; 40. Solder pot body; 41. Dross tank; 42. Dross scraper; 43. Scraper drive; 44. Dross stand; 45. Solder wire supply machine; 5. Translation mechanism; 50. Translation frame; 51. Translation slide rail; 5 2. Translation drive mechanism, 520. From synchronous pulley, 521. Translation transmission belt, 522. Translation motor, 523. Drive shaft, 524. Main synchronous pulley, 53. Translation beam, 6. Fixture body, 60. Positioning hole, 7. Tilting mechanism, 70. Tilting drive component, 700. Servo motor, 701. Drive shaft, 702. Drive pulley, 703. Synchronous belt, 704. Driven pulley, 71. Fixture rotating shaft, 72. Extension arm, 73. Clamping cylinder, 74. Center, 8. Lifting mechanism, 80. Lifting motor, 81. Lifting screw, 82. Lifting slide rail, 83. Lifting seat, 9. Fixture clamp, 90. Clearance notch, 91. Fixture limit ring, 92. Fixture chuck, 93. Receiving groove. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0026] Example: A tin-dipping machine for magnetic rings and wire rods includes a machine base 1, a translation mechanism 5 mounted on the machine base 1, a lifting mechanism 8 mounted on the translation mechanism 5, a flipping mechanism 7 mounted on the lifting mechanism 8, a fixture clamp 9 mounted on the flipping mechanism 7, a fixture body 6 clamped on the fixture clamp 9, a flux-dipping assembly 2 mounted on the machine base 1, a flux-drying assembly 3 mounted on the machine base 1, and a tin-dipping pot assembly 4 mounted on the machine base 1. The flux-dipping assembly 2, the flux-drying assembly 3, and the tin-dipping pot assembly 4 are arranged sequentially below the moving path of the fixture body 6. The flipping mechanism 7 includes two parallel downward extending arms 72, a flipping drive 70 mounted on the extending arms 72, and a rotating connecting... A clamping rotating shaft 71 is attached to the end of the extension arm 72. The clamping rotating shaft 71 is driven to connect with the flipping drive 70. The axis of the clamping rotating shaft 71 is horizontal. The fixture 9 includes a fixture limiting ring 91 disposed on the opposite side of the end of the extension arm 72 and a fixture chuck 92 rotatably connected to the opposite side of the end of the extension arm 72. The fixture chuck 92 is connected to the clamping rotating shaft 71. The fixture chuck 92 is located inside the fixture limiting ring 91. The fixture chuck 92 is cylindrical. The end of the fixture chuck 92 is provided with a receiving groove 93 extending to one side of the circumference. The circumference of the fixture limiting ring 91 is provided with an avoidance notch 90. The receiving groove 93 has a pick-up and put-out position collinear with the avoidance notch 90 and a soldering position offset from the avoidance notch 90.

[0027] The aforementioned extension arm 72, along with the clamp rotation shaft 71 and fixture chuck 92 located at the end of the extension arm 72, facilitates the avoidance of the magnetic ring and wire bar during flipping. This allows for a smaller stroke of the lifting mechanism 8, reducing structural complexity and improving work efficiency. The fixture chuck 92 works in conjunction with the clamp limit ring 91 to release the fixture body 6, resulting in a simple structure and high load-bearing capacity.

[0028] The flipping drive component 70 includes a servo motor 700 mounted on one of the extension arms 72, a drive shaft 701 rotatably connected to the extension arms 72 at both ends, a drive pulley 702 mounted on the drive shaft 701, a driven pulley 704 mounted on the clamp rotation shaft 71, and a synchronous belt 703 connecting the drive pulley 702 and the driven pulley 704. The synchronous belt 703 structure makes the transmission more precise, and the structure is simple and lightweight.

[0029] The fixture rotating shaft 71 is a hollow shaft, and a clamping cylinder 73 is provided on the clamping rotating shaft 71. A tip 74, extending through the clamping rotating shaft 71, is provided on the cylinder rod of the clamping cylinder 73. The tip of the tip 74 extends into the receiving groove 93. The end of the fixture body 6 that extends into the receiving groove 93 has a positioning hole 60 that mates with the tip 74. The tip 74 clamps both ends of the fixture body 6, ensuring the stability of the fixture body 6. The engagement of the tip 74 with the conical positioning hole 60 allows for automatic leveling of the fixture body 6, ensuring consistent soldering height for the wire rod and the magnetic ring.

[0030] The translation mechanism 5 includes a translation frame 50 mounted on the machine base 1, a translation slide rail 51 horizontally mounted on the translation frame 50, a translation beam 53 slidably engaged with the translation slide rail 51, and a translation drive mechanism 52 mounted on the translation frame 50 for driving the translation beam 53 to move along the translation slide rail 51. To improve the support force and the stability of the translation mechanism 5, the translation frame 50 can be composed of two parallel portal frames, with both ends of the translation beam 53 engaging with the translation slide rail 51 on the portal frames, so that both ends of the translation beam 53 can receive a balanced upward support force.

[0031] The translation drive mechanism 52 includes a drive shaft 523 located at the tail end of the translation frame 50, a main synchronous pulley 524 located at the end of the drive shaft 523, a driven synchronous pulley 520 located at the head of the translation frame 50, a translation drive belt 521 connecting the main synchronous pulley 524 and the driven synchronous pulley 520 on the same side of the translation frame 50, and a translation motor 522 mounted on the translation frame 50 and driven by one of the drive shafts 523. The use of the drive shaft 523 ensures that both ends of the translation beam 53 are driven, preventing deflection of the translation beam 53. The synchronous belt structure provides precise transmission, a simple structure, and low cost.

[0032] The lifting mechanism 8 includes a lifting motor 80 mounted on the translation beam 53, a lifting screw 81 rotatably connected to the translation beam 53, a lifting slide rail 82 mounted on the translation beam 53, and a lifting seat 83 cooperating with the lifting slide rail 82. The lifting seat 83 and the lifting screw 81 are engaged by a nut, and the lifting motor 80 is driven by the lifting screw 81. The screw mechanism allows for more precise control of the soldering height and can be adjusted according to the required soldering height for different products, thus broadening its applicability.

[0033] The flux dispensing assembly 2 includes a flux frame 20 mounted on the machine base 1, a flux tank 22 mounted on the flux frame 20, a flux cover cylinder 23 mounted on the flux frame 20, and a flux cover plate 21 mounted on the flux cover cylinder 23. The flux cover plate 21 moves horizontally under the drive of the flux cover cylinder 23. The flux cover plate 21 has a covering position that completely covers the top opening of the flux tank 22 and a clearance position that is completely offset from the top opening of the flux tank 22. The flux cover cylinder 23 adopts a rodless cylinder structure, which can reduce the size of the equipment. The flux cover plate 21 can reduce flux evaporation.

[0034] The flux tank 22 includes an outer tank 220 and an inner tank 221 disposed within the outer tank 220. A level sensor 24 is installed in the outer tank 220, and a circulation hole 222 is installed in the inner tank 221. The circulation hole 222 is connected to a flux circulation system. The outer tank 220 has a return hole 223 communicating with the flux circulation system. The outer tank 220 and inner tank 221 prevent the circulating flux from disturbing the level sensor 24, thus ensuring better control of the flux level and facilitating the control of the flux wetting height. The flux circulation system is a commercially available circulation system (not shown in the figure). The flux circulation system ensures uniform flux distribution.

[0035] The flux drying assembly 3 includes a drying rack 30 mounted on the machine base 1, a drying trough 32 mounted on top of the drying rack 30, a uniform air distribution plate 34 and a cleaning mesh plate 33 mounted within the drying trough 32, and a hot air gun 31 mounted at the bottom of the drying trough 32. The cleaning mesh plate 33 and the uniform air distribution plate 34 divide the drying trough 32 into a drying chamber 36, a sandwich layer 37, and a hot air chamber 38 from top to bottom. The uniform air distribution plate 34 has through holes 35 distributed on it, and the diameter of each through hole 35 is inversely proportional to its distance from the outlet of the hot air gun 31. The uniform air distribution plate 34 and the cleaning mesh plate 33 ensure more even drying of the flux on the wire rod or magnetic ring with hot air. The cleaning mesh plate 33 is placed directly inside the drying trough 32 and can collect dripping flux for easy cleaning.

[0036] The machine 1 is equipped with two tin-immersion pot assemblies 4. One of the tin-immersion pot assemblies 4 provides high-temperature tin. The tin-immersion pot assembly 4 includes a tin pot body 40 mounted on the machine 1, a slag tank 41 located at one end of the tin pot body 40, a slag support 44 located on one side of the tin pot body 40, a slag scraper 42 that slides horizontally along the slag support 44, a slag scraping drive 43 mounted on the slag support 44 for driving the slag scraper 42, and a tin wire supply 45 mounted on the machine 1. The slag scraping drive 43 can be a synchronous belt pulley assembly driven by a motor, which has a simple structure and good temperature resistance. The tin-immersion pot assembly also includes a tin liquid detection mechanism that uses a proximity switch to detect the tin liquid level in the tin pot body.

[0037] During operation, the fixture chuck 92 is rotated so that the opening of the receiving groove 93 coincides with the clearance notch 90. Both ends of the fixture body 6 are inserted into the receiving groove 93, and the tip 74 is inserted into the positioning hole 60. The fixture chuck 92 is then rotated so that the receiving groove 93 and the clearance notch 90 are misaligned, with the soldering pins of the wire rod and magnetic ring facing downwards. The translation mechanism 5 drives the translation beam 53 to move. The wire rod and magnetic ring first move to the flux dipping assembly 2 to dip in flux, then move to the flux drying assembly 3 to dry the flux. The wire rod and magnetic ring move to the high-temperature soldering pot assembly 4, where the insulating varnish at the soldering position of the wire rod and magnetic ring is burned off. They then move back to the flux dipping assembly 2 to dip in flux, move to the flux drying assembly 3, and finally move to the ordinary soldering pot assembly 4 for soldering, improving the soldering quality.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tin-dipping machine for magnetic rings and wire rods, characterized in that, The system includes a machine base, a translation mechanism mounted on the machine base, a lifting mechanism mounted on the translation mechanism, a tilting mechanism mounted on the lifting mechanism, a fixture fixture mounted on the tilting mechanism, a fixture body clamped on the fixture fixture, a flux dispensing assembly mounted on the machine base, a flux drying assembly mounted on the machine base, and a solder pot assembly mounted on the machine base. The flux dispensing assembly, flux drying assembly, and solder pot assembly are arranged sequentially below the moving path of the fixture body. The tilting mechanism includes two parallel downward extending arms, a tilting drive component mounted on the extending arms, and a rotatable connection. The fixture has a rotating shaft at the end of the extension arm, which is driven by the flipping drive. The axis of the rotating shaft is horizontal. The fixture includes a fixture limiting ring disposed on the opposite side of the end of the extension arm and a fixture chuck rotatably connected to the opposite side of the end of the extension arm. The fixture chuck is connected to the rotating shaft and is located inside the fixture limiting ring. The fixture chuck is cylindrical and has a receiving groove extending to one side of its circumference at its end. The circumference of the fixture limiting ring has an avoidance notch. The receiving groove has a pick-up and put-out position collinear with the avoidance notch and a soldering position offset from the avoidance notch.

2. The tin-dipping machine for magnetic rings and wire bars according to claim 1, characterized in that, The flipping drive includes a servo motor mounted on one of the extension arms, a drive shaft with both ends rotatably connected to the extension arm, an active pulley mounted on the drive shaft, a passive pulley mounted on the clamp rotation shaft, and a synchronous belt connecting the active pulley and the passive pulley.

3. A tin-dipping machine for magnetic rings and wire bars according to claim 2, characterized in that, The fixture rotating shaft is a hollow shaft, and a clamping cylinder is provided on the fixture rotating shaft. The cylinder rod of the clamping cylinder is provided with a tip that passes through the fixture rotating shaft. The tip of the tip extends into the receiving groove. The end of the fixture body that extends into the receiving groove is provided with a positioning hole that mates with the tip.

4. A tin-dipping machine for magnetic rings and wire bars according to claim 3, characterized in that, The translation mechanism includes a translation frame mounted on the machine base, a translation slide rail horizontally mounted on the translation frame, a translation beam slidably engaged with the translation slide rail, and a translation drive mechanism mounted on the translation frame for driving the translation beam to move along the translation slide rail.

5. A tin-dipping machine for magnetic rings and wire bars according to claim 4, characterized in that, The translation drive mechanism includes a drive shaft located at the tail end of the translation frame, a main synchronous pulley located at the end of the drive shaft, a driven synchronous pulley located at the head of the translation frame, a translation drive belt connecting the main synchronous pulley and the driven synchronous pulley on the same side of the translation frame, and a translation motor located on the translation frame and driven by one of the drive shafts.

6. A tin-dipping machine for magnetic rings and wire bars according to claim 4, characterized in that, The lifting mechanism includes a lifting motor mounted on the translation beam, a lifting screw rotatably connected to the translation beam, a lifting slide rail mounted on the translation beam, and a lifting seat cooperating with the lifting slide rail. The lifting seat and the lifting screw are engaged by a nut, and the lifting motor is drivenly connected to the lifting screw.

7. A tin-dipping machine for magnetic rings and wire bars according to claim 4, characterized in that, The flux dispensing assembly includes a flux frame mounted on the machine base, a flux tank mounted on the flux frame, a flux cover cylinder mounted on the flux frame, and a flux cover plate mounted on the flux cover cylinder. The flux cover plate moves horizontally under the drive of the flux cover cylinder. The flux cover plate has a covering position that completely covers the top opening of the flux tank and a clearance position that is completely offset from the top opening of the flux tank.

8. A tin-dipping machine for magnetic rings and wire bars according to claim 7, characterized in that, The flux tank includes an outer tank and an inner tank disposed within the outer tank. A liquid level sensor is provided in the outer tank, and a circulation hole is provided in the inner tank. The circulation hole is connected to a flux circulation system, and the outer tank is provided with a return hole that communicates with the flux circulation system.

9. A tin-dipping machine for magnetic rings and wire bars according to claim 7, characterized in that, The flux drying assembly includes a drying rack on the machine base, a drying trough on top of the drying rack, a uniform air distribution plate and a cleaning mesh plate inside the drying trough, and a hot air gun at the bottom of the drying trough. The cleaning mesh plate and the uniform air distribution plate divide the drying trough into a drying chamber, a sandwich layer, and a hot air chamber from top to bottom. The uniform air distribution plate has through holes, and the diameter of the through holes is inversely proportional to the distance from the outlet of the hot air gun.

10. A tin-dipping machine for magnetic rings and wire bars according to claim 7, characterized in that, The machine is equipped with two tin-immersion pot assemblies. One of the tin-immersion pot assemblies provides high-temperature tin. The tin-immersion pot assembly includes a tin pot body disposed on the machine, a slag trough disposed at one end of the tin pot body, a slag support disposed on one side of the tin pot body, a slag scraper that slides horizontally along the slag support, a slag scraping drive unit disposed on the slag support for driving the slag scraper, and a tin wire supply machine disposed on the machine.