Welding device for hardware machining

Abstract

The invention relates to the technical field of hardware welding devices, in particular to a welding device for hardware machining, which comprises a gun body, a fixing cover is detachably mounted at the front end of the gun body, a wire wheel is rotatably mounted at one end, close to the gun body, of the fixing cover, a welding wire for welding operation is wound on the outer surface of the wire wheel, and a magnetic flux tube is fixedly mounted at the inner end of the gun body. A coil is wound on the outer surface of the magnetic flux pipe, when the coil is powered on, a magnetic field is formed around the magnetic flux pipe, a contact pipe is fixedly installed at the left end of the gun body, a guide pipe is fixedly installed at the inner end of the gun body, a tray is fixedly installed at the inner end of the magnetic flux pipe, and a clamping device facilitating stable movement of a welding wire is arranged below the tray. The welding wire is driven to move under the action of continuous transmission and friction force of the driving belt, so that the continuous supply of the welding wire can ensure that the filling amount of molten metal is enough during welding, and a uniform and stable molten pool can be provided by continuous supply, so that the consistency of the temperature of the molten metal and the welding quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of hardware welding devices, in particular to a welding device for hardware processing. Background Art

[0002] In the field of modern hardware processing, welding is one of the key manufacturing processes and is widely used in the connection and assembly of metal structural parts. Traditional welding equipment usually relies on manual operation or simple robotic arms, which is difficult to meet the complex and diverse hardware processing needs. Since hardware is usually small and delicate, its welding requires high precision and consistency. Traditional equipment often has many shortcomings when dealing with these specific requirements. For example, traditional welding equipment may cause problems such as uneven welding, insufficient weld strength or welding deformation during the welding process, thus affecting the final quality of the product.

[0003] After searching, it was found that the prior art publication number is CN216462665U, which discloses a three-axis automatic welding device for hardware processing, involving the field of hardware welding technology, including a workbench, a groove is opened on the side wall of the workbench, a cylinder is fixedly installed on the side wall of the workbench, the output end of the cylinder is fixedly connected with a telescopic rod through a coupling, one end of the telescopic rod is fixedly connected with a mounting frame, the mounting frame is slidably connected to the groove, a driving motor is fixedly installed on the side wall of the mounting frame, the output end of the driving motor is fixedly connected with a rotating rod through a coupling, the outer surface of the rotating rod is fixedly sleeved with a driving gear, a threaded rod is rotatably connected between the inner walls of the mounting frame, and the outer surface of the threaded rod is fixedly sleeved with a driven gear. This solution solves the problem that most existing welding devices have poor flexibility during welding and can only be moved in one direction, making it difficult to perform three-axis mobile welding processing on them.

[0004] Therefore, based on the above search and combined with the existing technology, when the above scheme is used, when welding hardware, it is necessary to supply the welding wire in time to ensure the uniform replenishment of the molten pool during the welding process. If the molten pool is not sufficiently supplied during the welding process, the filling material of the molten pool is insufficient, resulting in defects such as cracks, pores, and slag inclusions in the weld, which directly affects the strength and quality of the weld. For this reason, we propose a welding device for hardware processing. Summary of the invention

[0005] The object of the present invention is to provide a welding device for hardware 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 welding device for hardware processing, comprising a gun body, a handle for easy holding is fixedly installed on the right end of the gun body, a fixed cover is detachably installed on the front end of the gun body, a wire wheel is rotatably installed on the fixed cover close to one end of the gun body, a welding wire for welding operation is wound on the outer surface of the wire wheel, a magnetic flux tube is fixedly installed on the inner end of the gun body, and a coil is wound on the outer surface of the magnetic flux tube, when the coil is energized, a magnetic field is formed around the magnetic flux tube, a contact tube is fixedly installed on the left end of the gun body, a guide tube is fixedly installed on the inner end of the gun body, and the free end of the welding wire is exposed on the left side of the gun body after passing through the guide tube, the magnetic flux tube and the contact tube respectively, a tray is fixedly installed on the inner end of the magnetic flux tube, a clamping device that helps the welding wire to move stably is arranged under the tray, an output tube is fixedly connected to the inner left end of the magnetic flux tube, and a cut-off device for clamping the welding wire after it is almost consumed is arranged on the inner end of the output tube.

[0007] As a further solution of the present invention, stabilizing wheels are rotatably installed on both ends of the magnetic flux tube, the outer surface of the stabilizing wheel is tensioned by a drive belt, the outer surface of the welding wire is in contact with the outer surface of the drive belt, and a plurality of magnetic blocks are fixedly installed on the inner end of the drive belt, with a certain gap between every two adjacent magnetic blocks. When the coil is energized, a magnetic field is generated, and the magnetic blocks move toward the left one by one under the traction of the magnetic force.

[0008] As a further solution of the present invention, the clamping device includes a movable frame, which is located below the pallet. Rectangular grooves are provided on the left and right sides of the bottom of the pallet. Abutment wheels are rotatably installed on both ends of the movable frame, and the abutment wheels are located above the pallet after passing through the rectangular grooves.

[0009] As a further solution of the present invention, a movable rod is arranged below the movable frame, and one end of the movable rod away from the output tube is rotatably connected to the movable frame. Two eccentric blocks are rotatably installed on the inner bottom end of the magnetic flux tube, and the upper end of the eccentric block contacts the bottom end of the movable rod.

[0010] As a further solution of the present invention, a sliding block is slidably installed at the bottom end of the gun body, a driving rod is fixedly connected to the upper end of the sliding block, a passive gear is fixedly installed at the front end of the eccentric block, a rack is fixedly installed at the bottom end of the driving rod, and the passive gear is meshed with the rack.

[0011] As a further solution of the present invention, the cut-off device includes a stabilizing sleeve, which is fixedly installed on the inner right end of the output pipe, and a passive tube is rotatably installed on the inner end of the stabilizing sleeve away from the output pipe. The passive tube and the stabilizing sleeve are both sleeved on the outer surface of the welding wire, and the outer surface of the passive tube is clamped to the stabilizing sleeve by a torsion spring. A wire hole is opened on the outer surface of the tray, and the wire hole is located below the output pipe.

[0012] As a further solution of the present invention, a stabilizing ring is fixedly installed on the inner end of the stabilizing sleeve away from the passive tube, a plurality of connecting rods are rotatably installed on the inner end of the stabilizing ring, the connecting rods are arranged in a ring shape, contact blocks are rotatably installed on the ends of the connecting rods away from the stabilizing ring, an adjusting disk is rotatably installed on the end of the stabilizing ring close to the passive tube, and a traction line is wound on the outer surface of the passive tube.

[0013] As a further solution of the present invention, a plurality of arc-shaped holes are provided on the outer surface of the adjusting disk, the arc-shaped holes correspond to the connecting rods, and one end of the connecting rod close to the adjusting disk is inserted into the arc-shaped holes. When the adjusting disk rotates, the connecting rods are driven to rotate by the arc-shaped holes.

[0014] As a further solution of the present invention, a through hole is formed at the right end of the movable rod, a trigger pin is inserted into the through hole, the upper end of the trigger pin contacts the bottom end of the movable frame, and the trigger pin is connected to the movable rod via a reset spring;

[0015] A through hole is formed at the right end of the movable rod, a trigger pin is inserted into the through hole, the upper end of the trigger pin contacts the bottom end of the movable frame, and the trigger pin is connected to the movable rod via a reset spring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the present invention is used, the welding wire is driven to move by the continuous transmission of the driving belt and the friction force, so that the continuous supply of welding wire can ensure that the filling amount of molten metal during welding is sufficient, and the continuous supply can provide a uniform and stable molten pool, thereby ensuring the consistency of the temperature of the molten metal and the welding quality;

[0018] 2. When the present invention is used, the coil is energized by the current generated during the welding process, thereby generating an electromagnetic field to drive the magnetic block to move, thereby enabling the continuous movement of the welding wire, which can maintain continuous and stable feeding of the welding wire, and help reduce welding defects caused by unstable feeding of the welding wire during the welding process;

[0019] 3. When the present invention is used, when the welding wire is about to be consumed, the tail end of the welding wire is clamped and cut off in time, thereby reminding the operator to realize that the welding wire is consumed, and quickly prepare for the replacement of the new welding wire, thereby reducing the pause time during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a welding device for hardware processing;

[0021] Figure 2 It is a schematic diagram of the disassembled structure of a welding device for hardware processing;

[0022] Figure 3 It is a schematic diagram of the structure inside the gun body;

[0023] Figure 4 It is a schematic diagram of the structure inside the flux tube;

[0024] Figure 5 is a schematic diagram of the structure of the clamping device;

[0025] Figure 6 is a schematic diagram of the structure of the cut-off device;

[0026] Figure 7 It is a schematic diagram of the structure of the contact block in the stable sleeve;

[0027] Figure 8 This is a disassembled diagram of the cut-off device;

[0028] Fig. 9 It is a structural schematic diagram of the connection relationship between the traction line and the shift block;

[0029] Fig.10 for Fig. 9 Enlarged schematic diagram of point A inside.

[0030] In the figure: 1, gun body; 2, fixed cover; 3, grip; 4, welding wire; 101, wire wheel; 102, guide tube; 103, contact tube;

[0031] 201, flux tube; 202, drive belt; 203, coil; 204, magnetic block; 205, stabilizing wheel; 206, output tube; 207, stabilizing sleeve; 208, passive tube; 209, traction line; 210, adjustment plate; 211, contact block; 212, connecting rod; 213, stabilizing ring; 214, torsion spring; 215, arc hole; 216, positioning ring;

[0032] 301, shift block; 302, sliding block; 303, driving rod; 304, passive gear; 305, eccentric block; 306, movable frame; 307, movable rod; 308, trigger pin; 309, locking block; 310, abutment wheel; 311, tray; 312, return spring; 313, guide block. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1 to 3 A welding device for hardware processing comprises a gun body 1, a grip 3 for easy grasping is fixedly installed on the right end of the gun body 1, a fixed cover 2 is detachably installed on the front end of the gun body 1, a wire wheel 101 is rotatably installed on one end of the fixed cover 2 close to the gun body 1, a welding wire 4 for welding operation is wound on the outer surface of the wire wheel 101, a magnetic flux tube 201 is fixedly installed on the inner end of the gun body 1, and a coil 203 is wound on the outer surface of the magnetic flux tube 201, when the coil 203 is energized, a magnetic field is formed around the magnetic flux tube 201, a contact tube 103 is fixedly installed on the left end of the gun body 1, specifically, a guide tube 102 is fixedly installed on the inner end of the gun body 1, and the free end of the welding wire 4 passes through the guide tube 102, the magnetic flux tube 201 and the contact tube 103 respectively and then is exposed on the left side of the gun body 1;

[0035] More specifically, the contact tube 103 is made of metal, and the inner end is in contact with the outer surface of the welding wire 4. The output end of the coil 203 is electrically connected to the contact tube 103, and the other end is electrically connected to the power supply. The number of turns of the coil 203 determines the strength of the magnetic field. The more turns, the stronger the magnetic field. The left and right ends of the flux tube 201 are rotatably mounted with stabilizing wheels 205. The outer surface of the stabilizing wheel 205 is tensioned by the drive belt 202. The outer surface of the welding wire 4 is in contact with the outer surface of the drive belt 202. The outer surface of the drive belt 202 is fixed. A rubber sleeve is fixedly installed, and when the rubber sleeve contacts the outer surface of the welding wire 4, the effect of increasing friction is achieved, and a plurality of magnetic blocks 204 are fixedly installed on the inner end of the driving belt 202, and there is a certain gap between every two adjacent magnetic blocks 204. When the coil 203 is energized, a magnetic field is generated, and the magnetic blocks 204 move to the left in sequence under the traction of the magnetic force. The magnetic blocks 204 that move in sequence drive the driving belt 202 to rotate, and drive the welding wire 4 to move under the influence of the friction force, so that the welding wire 4 can be continuously replenished during the welding process;

[0036] See also Figure 2 , 3, 4, 5, a tray 311 is fixedly installed at the inner end of the flux tube 201, a clamping device that helps the welding wire 4 to move stably is arranged under the tray 311, an output tube 206 is fixedly connected to the inner left end of the flux tube 201, and a cut-off device that clamps the welding wire 4 when it is almost consumed is arranged at the inner end of the output tube 206;

[0037] The clamping device includes a movable frame 306, which is located below the tray 311. Rectangular grooves are provided on the left and right sides of the bottom end of the tray 311. Abutment wheels 310 are rotatably installed on the left and right ends of the movable frame 306, and the abutment wheels 310 are located above the tray 311 after passing through the rectangular grooves. The outer surface of the abutment wheel 310 contacts the outer surface of the welding wire 4. A rubber sleeve is fixedly installed on the outer surface of the abutment wheel 310 to increase the friction with the outer surface of the welding wire 4. When the movable frame 306 moves upward, it drives the abutment wheel 310 to move upward and pushes the welding wire 4 to make it in close contact with the outer surface of the driving belt 202. Specifically, two guide blocks 313 are fixedly installed on the upper end of the tray 311. The two guide blocks 313 are respectively located on the right sides of the two abutment wheels 310. When the welding wire 4 comes to the top of the tray 311, the guide blocks 313 are used to prevent the free end of the welding wire 4 from contacting the gap between the abutment wheel 310 and the tray 311, thereby making it impossible to complete the wire threading process.

[0038] See also Figure 4 , 5 A movable rod 307 is arranged below the movable frame 306. One end of the movable rod 307 away from the output tube 206 is rotatably connected to the movable frame 306 by a bolt. A cushion block is fixedly installed on the upper end of the movable rod 307. The upper end of the cushion block contacts the bottom end of the movable frame 306. At this time, the movable frame 306 is parallel to the movable rod 307. Two eccentric blocks 305 are rotatably installed on the inner bottom end of the magnetic flux tube 201. The upper end of the eccentric block 305 contacts the bottom end of the movable rod 307. When the core block 305 rotates, it pushes the movable rod 307 to move upward, and a sliding block 302 is slidably installed on the bottom end of the gun body 1, and a driving rod 303 is fixedly connected to the upper end of the sliding block 302. A passive gear 304 is fixedly installed on the front end of the eccentric block 305, and a rack is fixedly installed on the bottom end of the driving rod 303. The passive gear 304 meshes with the rack. When the sliding block 302 is pushed to move, the meshing action of the rack and the passive gear 304 drives the eccentric block 305 to rotate.

[0039] Example 2: Please refer to Figure 6 , 78. A welding device for hardware processing, based on Example 1, the cut-off device includes a stabilizing sleeve 207, the stabilizing sleeve 207 is fixedly installed on the inner right end of the output tube 206, a passive tube 208 is rotatably installed on the inner end of the stabilizing sleeve 207 away from the output tube 206, the passive tube 208 and the stabilizing sleeve 207 are both sleeved on the outer surface of the welding wire 4, the outer surface of the passive tube 208 is clamped with the stabilizing sleeve 207 through a torsion spring 214, when the passive tube 208 rotates, the torsion spring 214 is compressed, and a stabilizing ring 213 is fixedly installed on the inner end of the stabilizing sleeve 207 away from the passive tube 208;

[0040] The inner end of the stabilizing ring 213 is rotatably mounted with a plurality of connecting rods 212, which are arranged in a ring shape. The ends of the connecting rods 212 away from the stabilizing ring 213 are rotatably mounted with contact blocks 211. The end of the stabilizing ring 213 close to the passive tube 208 is rotatably mounted with an adjusting disk 210. The end of the adjusting disk 210 close to the passive tube 208 is fixedly mounted with a plurality of blocks, which are distributed in a ring shape. The outer surface of the passive tube 208 is also fixed with a plurality of blocks. The blocks at the right end of the adjusting disk 210 and the blocks on the outer surface of the passive tube 208 are interlaced and engaged with each other, thereby realizing the passive tube 208. When rotating, the adjusting disk 210 is driven to rotate under the action of the mutual engagement of the clamping blocks. A plurality of arc holes 215 are provided on the outer surface of the adjusting disk 210. The arc holes 215 correspond to the connecting rods 212, and one end of the connecting rods 212 close to the adjusting disk 210 is inserted into the arc holes 215. When the adjusting disk 210 rotates, the connecting rods 212 are driven to rotate under the promotion of the arc holes 215. The rotation of the connecting rods 212 drives the plurality of contact blocks 211 to move in a direction close to each other, thereby clamping the outer surface of the welding wire 4, or moving in a direction away from each other, thereby canceling the clamping of the welding wire 4.

[0041] See also Figure 5 , 9 , 10, a wire hole is provided on the outer surface of the tray 311, and the wire hole is located below the output tube 206. The inner end of the sliding block 302 is rotatably mounted with a shift block 301, and a traction wire 209 is wound around the outer surface of the passive tube 208. Specifically, a steering shaft is rotatably mounted on the outer surface of the driving rod 303, and a positioning ring 216 is fixedly mounted on the right end of the driving rod 303. After the free end of the traction wire 209 passes through the wire hole on the outer surface of the tray 311 and the positioning ring 216, it is immediately changed in direction by the steering shaft and finally fixedly connected with the upper end of the shift block 301. After the shift block 301 is rotated, its upper end is pulled by the traction wire 209 to rotate the passive tube 208;

[0042] A through hole is provided at the right end of the movable rod 307, and a trigger pin 308 is passed through the through hole. The trigger pin 308 is located on the right side of the pad, and the upper end of the trigger pin 308 contacts the bottom end of the movable frame 306, and the trigger pin 308 and the movable rod 307 are connected by a reset spring 312. A locking block 309 is fixedly installed at one end of the driving rod 303 close to the trigger pin 308. The locking block 309 is located below the trigger pin 308, and the traction line 209 is located between the trigger pin 308 and the locking block 309.

[0043] The working principle of the present invention is:

[0044] When in use, the wire reel 101 wound with the welding wire 4 is placed inside the gun body 1, and then the free end of the welding wire 4 is passed through the guide tube 102, the magnetic flux tube 201 and the output tube 206 respectively, and finally extends out from the left side of the contact tube 103, and then the fixed cover 2 is closed, and the shift block 301 is rotated at this time, and the shift block 301 rotates the passive tube 208 by pulling the traction line 209, and the rotation of the passive tube 208 compresses the torsion spring 214 and drives the adjusting disk 210 to rotate. When the adjusting disk 210 rotates, it drives the connecting rod 212 to rotate under the drive of the arc hole 215, and at this time, the contact blocks 211 are away from each other;

[0045] At this time, the sliding block 302 is pushed to drive the driving rod 303 to move, and the driving rod 303 moves to drive the rack to move. At this time, the passive gear 304 starts to rotate under the action of meshing with the rack, and the rotation of the passive gear 304 drives the eccentric block 305 to rotate. When the eccentric block 305 rotates, it squeezes the movable rod 307 to move upward. At the same time, the movable frame 306 also moves upward and pushes the abutment wheel 310 upward. At this time, the abutment wheel 310 contacts the outer surface of the welding wire 4, and then the outer surface of the welding wire 4 contacts the outer surface of the driving belt 202. At this time, the abutment wheel 310, the movable frame 306 and the pad at the upper end of the movable rod 307 are squeezed against each other and are in a horizontal state. The bottom end of the trigger nail 308 presses the traction line 209 above the locking block 309;

[0046] At this time, the welding operation begins. When the welding wire 4 contacts the outer surface of the workpiece, current will pass through. At this time, the coil 203 is energized, and an electromagnetic field is generated around it. Under the influence of the electromagnetic field around the coil 203, the magnetic blocks 204 begin to move to the left one by one, and drive the driving belt 202 to rotate. At this time, under the action of the friction between the driving belt 202 and the outer surface of the welding wire 4, the welding wire 4 moves slowly. Then, when the welding wire 4 is about to be consumed, the tail end of the welding wire 4 comes to the left abutment wheel 310, and the welding wire 4 continues to move so that the tail end is no longer in contact with the abutment wheel 310. 10, there is no object above the abutment wheel 310, at this time, the trigger pin 308 moves upward under the elastic force of the reset spring 312, at this time, the trigger pin 308 no longer presses the traction line 209 above the locking block 309, the torsion spring 214 on the outer surface of the passive tube 208 releases the elastic force and drives the passive tube 208 to reverse, at this time, the connecting rod 212 pushes the contact blocks 211 to gather together under the reaction force of the arc hole 215, clamps the outer surface of the welding wire 4, and the welding wire 4 cannot continue to extend, thereby reminding the operator that the welding wire 4 is now used up.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed in the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding device for hardware processing, comprising a gun body (1), characterized in that: The right end of the gun body (1) is fixedly mounted with a grip (3) for easy grasping, the front end of the gun body (1) is detachably mounted with a fixed cover (2), the end of the fixed cover (2) close to the gun body (1) is rotatably mounted with a wire wheel (101), the outer surface of the wire wheel (101) is wound with a welding wire (4) for welding operation, the inner end of the gun body (1) is fixedly mounted with a magnetic flux tube (201), and the outer surface of the magnetic flux tube (201) is wound with a coil (203), when the coil (203) is energized, a magnetic field is formed around the magnetic flux tube (201), and the left end of the gun body (1) is fixedly mounted with a contact tube (103), a guide tube (102) is fixedly installed at the inner end of the gun body (1), and the free end of the welding wire (4) is exposed on the left side of the gun body (1) after passing through the guide tube (102), the magnetic flux tube (201) and the contact tube (103) respectively, and a tray (311) is fixedly installed at the inner end of the magnetic flux tube (201), and a clamping device that helps the welding wire (4) to move stably is arranged under the tray (311), and the inner left end of the magnetic flux tube (201) is fixedly connected to an output tube (206), and the inner end of the output tube (206) is provided with a cut-off device for clamping the welding wire (4) when it is almost consumed.

2. A welding device for hardware processing according to claim 1, characterized in that: Both left and right ends of the magnetic flux tube (201) are rotatably mounted with stabilizing wheels (205), the outer surface of the stabilizing wheel (205) is tensioned and sleeved by a driving belt (202), the outer surface of the welding wire (4) is in contact with the outer surface of the driving belt (202), a plurality of magnetic blocks (204) are fixedly mounted on the inner end of the driving belt (202), a certain gap is provided between each two adjacent magnetic blocks (204), a magnetic field is generated when the coil (203) is energized, and the magnetic blocks (204) move toward the left side in sequence under the traction of the magnetic force.

3. A welding device for hardware processing according to claim 1, characterized in that: The clamping device comprises a movable frame (306), the movable frame (306) is located below the tray (311), rectangular grooves are provided on the left and right sides of the bottom of the tray (311), and abutment wheels (310) are rotatably mounted on the left and right ends of the movable frame (306), and the abutment wheels (310) are located above the tray (311) after passing through the rectangular grooves.

4. A welding device for hardware processing according to claim 3, characterized in that: A movable rod (307) is arranged below the movable frame (306), and one end of the movable rod (307) away from the output tube (206) is rotatably connected to the movable frame (306). Two eccentric blocks (305) are rotatably mounted on the inner bottom end of the magnetic flux tube (201), and the upper ends of the eccentric blocks (305) are in contact with the bottom end of the movable rod (307).

5. A welding device for hardware processing according to claim 4, characterized in that: A sliding block (302) is slidably mounted on the bottom end of the gun body (1), a driving rod (303) is fixedly connected to the upper end of the sliding block (302), a passive gear (304) is fixedly mounted on the front end of the eccentric block (305), a rack is fixedly mounted on the bottom end of the driving rod (303), and the passive gear (304) is meshed with the rack.

6. A welding device for hardware processing according to claim 1, characterized in that: The cut-off device comprises a stabilizing sleeve (207), wherein the stabilizing sleeve (207) is fixedly mounted on the right inner end of the output tube (206), and a passive tube (208) is rotatably mounted on the inner end of the stabilizing sleeve (207) away from the output tube (206). The passive tube (208) and the stabilizing sleeve (207) are both sleeved on the outer surface of the welding wire (4), and the outer surface of the passive tube (208) is clamped with the stabilizing sleeve (207) via a torsion spring (214). A wire hole is provided on the outer surface of the tray (311), and the wire hole is located below the output tube (206).

7. A welding device for hardware processing according to claim 6, characterized in that: A stabilizing ring (213) is fixedly mounted on one end of the inner side of the stabilizing sleeve (207) away from the passive tube (208); a plurality of connecting rods (212) are rotatably mounted on the inner end of the stabilizing ring (213); the connecting rods (212) are arranged in a ring shape; a contact block (211) is rotatably mounted on one end of the connecting rods (212) away from the stabilizing ring (213); an adjusting disk (210) is rotatably mounted on one end of the stabilizing ring (213) close to the passive tube (208); and a traction line (209) is wound around the outer surface of the passive tube (208).

8. A welding device for hardware processing according to claim 7, characterized in that: The outer surface of the adjusting disk (210) is provided with a plurality of arc-shaped holes (215), the arc-shaped holes (215) correspond to the connecting rod (212), and one end of the connecting rod (212) close to the adjusting disk (210) is inserted into the arc-shaped hole (215), and when the adjusting disk (210) rotates, the connecting rod (212) is driven to rotate by the arc-shaped hole (215).

9. A welding device for hardware processing according to claim 4, characterized in that: A through hole is formed at the right end of the movable rod (307), a trigger pin (308) is inserted into the through hole, the upper end of the trigger pin (308) contacts the bottom end of the movable frame (306), and the trigger pin (308) and the movable rod (307) are connected via a reset spring (312); A through hole is formed at the right end of the movable rod (307), a trigger pin (308) is inserted into the through hole, the upper end of the trigger pin (308) contacts the bottom end of the movable frame (306), and the trigger pin (308) and the movable rod (307) are connected via a reset spring (312).

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