Wire feeding head device

Abstract

The utility model discloses a wire feeding head device which comprises a wire feeding head, a wire feeding head anti-wire-drawing module and a control system of a product carrying mechanism. The wire feeding head anti-wire-drawing module comprises a fixed block, a rotating block which can swing by a set angle in the carrying direction of the product carrying mechanism and is installed on the fixed block, a position sensing device used for sensing the rotating action of the rotating block, and an elastic reset device used for providing elastic retaining force for the rotating block so that the rotating block can be located at the welding position. The fixing block is installed on the welding device, the wire feeding head is fixed to the rotating block, and the position sensing device communicates with a control system of the product carrying mechanism to transmit position information of the rotating block. The wire feeding head mechanism is fully protected, loss caused by collision with a machine table is effectively avoided, wire feeding of the wire feeding head is stable, the welding quality is high, the production efficiency is high, the production cost is low, the production cost is low, and the production efficiency is high. And debugging is fast.

Description

Technical Field

[0001] The utility model relates to the technical field of laser wire feeding welding, in particular to a wire feeding head device. Background Art

[0002] Laser wire feeding welding uses a wire feeding mechanism to feed the welding wire to the welding part on the product. The welding wire melts under the action of laser radiation to achieve welding. After welding, the product handling mechanism of the automated equipment removes the welded product from the welding positioning device.

[0003] At present, the wire feeder head of laser welding equipment is fixedly installed on the welding device. The most common method is to fix and install it by means of fixed clamping, which is a hard connection. Once a relatively high-strength welding wire is encountered, during the welding process, the welding wire and the steel plate product are cooled and condensed together, while the handling mechanism of the automated equipment is still normally handling the welded product, the entire wire feeder head mechanism will be pulled down and damaged during the handling process, and the wire feeder gun head will be damaged. In severe cases, the laser head will be pulled down and damaged, causing great economic losses. This situation causes frequent downtime and abnormal welding.

[0004] At present, the mechanism used for fine-tuning the position of the wire feeding head at the end of laser wire feeding welding needs to fine-tune the wire feeding point to the welding position, which basically adopts a clamping or dovetail groove slide. During the precise movement adjustment process, the accuracy is not enough and it needs to be adjusted repeatedly, which wastes a lot of time.

[0005] The existing wire feeder end fixing mechanism is generally realized by a clamping mechanism with a width of 1-2 cm. In order to avoid the steel plate product in automated production, the wire feeder end needs to be cantilevered by about 10 cm. The internal mechanism of the coaxial wire feeder is only a copper tube of about 1 mm, which is welded together. The cantilever is long, the fixing position is limited, and the material strength is not enough. It is very easy to damage the wire feeder mechanism due to collision during the debugging process. In actual use, it will also be affected by frequent sliding contact with the sheet, resulting in the need to check the position and replace the wire feeder after a period of use.

[0006] Moreover, in the current coaxial shielding gas device for laser wire welding, most of the shielding gas pipelines in the industry are installed perpendicularly to the wire feeding head, about 5 cm from the end of the wire feeding head. Affected by the fluid guidance, the shielding gas flow error is relatively large, especially when using a low flow rate (5-30L / min). The shielding gas flow error is even greater. In addition, the shielding gas device is installed vertically sideways, which occupies a large space. In automated production, there is also a risk of collision with the machine. Utility Model Content

[0007] In order to overcome the above-mentioned defects, the utility model provides a wire feeding head device, which can fully protect the wire feeding head, and the wire feeding head has higher strength, higher wire feeding accuracy, and more stable flow of protective gas.

[0008] The utility model adopts the following technical solution to solve the technical problem: a wire feeding head device, including a wire feeding head, a wire feeding head anti-drawing module and a control system of a product handling mechanism, wherein the wire feeding head anti-drawing module includes a fixed block, a rotating block, a position sensing device and an elastic reset device, wherein the fixed block can be fixedly mounted on the welding device, the rotating block can be mounted on the fixed block at a set angle in the handling direction of the product handling mechanism, the wire feeding head for supplying welding wire is fixedly mounted on the rotating block, the elastic reset device can provide the rotating block with an elastic reset force along its swinging direction, and the elastic reset force enables the rotating block to be fixedly mounted on the welding device without external force. In the case of maintaining the set welding position, the position sensing device is fixedly installed on the fixed block. The position sensing device can sense whether the rotating block deviates from the set welding position due to swinging. The position sensing device communicates with the control system of the product conveying mechanism through wired or wireless means. The position sensing device can transmit the acquired position information of the rotating block to the control system of the product conveying mechanism. The control system of the product conveying mechanism can determine whether wire drawing occurs after the product welding is completed based on the position information of the rotating block. When the control system determines that wire drawing occurs after the product welding is completed, it controls the product conveying mechanism to stop the conveying action.

[0009] As a further improvement of the utility model, the fixed block is provided with a first stop wall and a second stop wall, and the two side walls of the rotating block along its swinging direction are respectively stopped between the first stop wall and the second stop wall of the fixed block, an elastic slide is provided in the fixed block, a positioning slider is provided in the elastic slide, the positioning slider can slide a set distance in the elastic slide, and a spring is also installed in the elastic slide, the spring is tightly against the positioning slider so that its end extends out of the elastic slide and tightly against one side wall of the rotating block along its swinging direction, so that the other side wall of the rotating block tightly against the second stop wall of the fixed block.

[0010] As a further improvement of the utility model, one end of the positioning slider is in close contact with a side wall of the rotating block along its swinging direction through a convex spherical surface, and the other end of the positioning slider is provided with a spring slot, and the other end of the spring is inserted into the spring slot and tightly against the bottom surface of the elastic slot.

[0011] As a further improvement of the utility model, an adjusting screw is movably threaded in one end of the elastic slideway facing away from the rotating block, and the stud end of the adjusting screw is tightly against one end of the spring to achieve positioning of one end of the spring and adjustment of the elastic restoring force of the spring.

[0012] As a further improvement of the present invention, the fixed block is an L-shaped block structure with an acute angle formed between the first stop wall and the second stop wall, wherein the second stop wall extends in a horizontal direction, and the first stop wall is provided with a horizontally extending concave structure, the concave structure and the second stop wall together form a U-shaped opening slot, and the U-shaped opening slot is connected to the second stop wall through an arc surface, and the two sides of the fixed block perpendicular to the second stop wall are also removably fixed with a left cover plate and a right cover plate, and a plug-in protrusion is formed on the side wall of the rotating block, the plug-in protrusion is inserted into the U-shaped opening slot, the plug-in protrusion is provided with a horizontally extending axial hole, and a suspension shaft is rotatably inserted in the axial hole, and both ends of the suspension shaft are fixedly connected to the left cover plate and the right cover plate respectively, and the outer side wall of the plug-in protrusion contacts the arc surface of the U-shaped opening slot through a convex arc surface coaxial with the axial hole.

[0013] As a further improvement of the present utility model, the position sensing device is a safety switch, and the safety switch can be triggered after the rotating block rotates to a set angle.

[0014] As a further improvement of the utility model, a wire feeding head fine-tuning mechanism is also provided, wherein the Z direction is the vertical up and down direction, the X direction and the Y direction are two mutually perpendicular directions in the horizontal plane, and the wire feeding head fine-tuning mechanism comprises a fixed mounting seat, an X-direction slide, a Z-direction slide, a Y-direction slide, an X-direction micrometer fine-tuning device, a Z-direction micrometer fine-tuning device, a Y-direction micrometer fine-tuning device, an X-direction clamping and positioning device, a Y-direction clamping device and a Z-direction clamping and positioning device, the fixed mounting seat can be fixedly mounted on the welding device, the X-direction slide can be mounted on the fixed mounting seat so as to slide back and forth in a straight line in the X direction, the Z-direction slide can be mounted on the X-direction slide so as to slide back and forth in a straight line in the Z direction, and the Y-direction slide can be mounted on the X-direction slide so as to slide back and forth in a straight line in the Z direction. The device is installed on the Z-direction slide table which can slide back and forth linearly along the Y-direction. The fixed ends of the X-direction micrometer fine-adjustment device, the Z-direction micrometer fine-adjustment device and the Y-direction micrometer fine-adjustment device are respectively fixedly installed on the fixed mounting seat, the X-direction slide table and the Z-direction slide table. The moving ends of the X-direction micrometer fine-adjustment device, the Z-direction micrometer fine-adjustment device and the Y-direction micrometer fine-adjustment device can respectively drive the X-direction slide table, the Z-direction slide table and the Y-direction slide table to move and thus adjust the position of the wire feeding point in the X-direction, Z-direction and Y-direction directions. The X-direction clamping and positioning device, the Y-direction clamping and positioning device and the Z-direction clamping and positioning device can respectively clamp and fix the X-direction slide table with the fixed mounting seat, the Z-direction slide table with the X-direction slide table, and the Y-direction slide table with the Z-direction slide table.

[0015] As a further improvement of the utility model, the fixed mounting seat, the X-axis slide and the Z-axis slide are respectively fixedly mounted with micro precision ball guide rails extending straightly along the X direction, the Z direction and the Y direction, and the X-axis slide, the Z-axis slide and the Y-axis slide are respectively in contact with the micro precision ball guide rails through four-point grooves.

[0016] As a further improvement of the utility model, a connecting plate and a contoured reinforcement module are also provided, the connecting plate is fixedly mounted on the rotating block of the anti-wire drawing module, the contoured reinforcement module comprises a first contoured reinforcement block, a second contoured reinforcement block and a connecting piece, a first pipe accommodating groove is formed on the inner side of the first contoured reinforcement block, a second pipe accommodating groove is formed on the inner side of the second contoured reinforcement block, the first contoured reinforcement block can be fixedly connected to the second contoured reinforcement block through the connecting piece to form an integrated structure, the first pipe accommodating groove and the second pipe accommodating groove can be spliced ​​to form an accommodating channel matching the end pipe of the wire feeding head, the upper end of the accommodating channel extends in a vertical direction, the lower end of the accommodating channel extends obliquely downward, the upper and lower ends of the accommodating channel are connected by a tangent arc segment, and at least one of the first contoured reinforcement block and the second contoured reinforcement block is fixedly mounted on the connecting plate.

[0017] As a further improvement of the utility model, a wire guide pipe, a water cooling pipe and a shielding gas pipe are coaxially arranged in the pipe at the end of the wire feeding head, and an integrated joint is arranged at the upper end of the pipe at the end of the wire feeding head. One end of the integrated joint is respectively connected with the wire guide pipe, the water cooling pipe and the shielding gas pipe, and the other end of the integrated joint is respectively connected with the wire supply pipe, the water supply pipe and the shielding gas supply pipe by means of a quick-tightening plug with threads.

[0018] As a further improvement of the present invention, the beneficial effects of the present invention are as follows: the present invention sets an anti-wire drawing module so that the wire feeding head can rotate within a set small angle range, and the position sensing device sends a signal to the control system of the automation equipment. When the wire feeding head encounters wire sticking during movement or debugging, the automation equipment can be quickly shut down, which fully protects the wire feeding head mechanism and can effectively avoid losses caused by collision with the machine; the present application also sets a contour reinforcement module on the outer side of the terminal pipe of the wire feeding head. After the terminal pipe of the wire feeding head is reinforced, the wire feeding head has better rigidity, more stable wire feeding, and the welding wire is not easy to deform; the present application also realizes precise adjustment of the position of the wire feeding head through the wire feeding head fine-tuning mechanism, and the wire feeding head position adjustment has higher accuracy and faster speed, saving debugging time; at the same time, the present application also optimizes the coaxial shielding gas mechanism, and the gas output is more stable when the shielding gas is in a low flow state, effectively improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 This is a three-dimensional exploded view of the anti-wire drawing module of the utility model;

[0021] Figure 3 It is a stereoscopic diagram of the positioning slider. DETAILED DESCRIPTION

[0022] Embodiment: A wire feeding head device, including a wire feeding head 1, a wire feeding head anti-drawing module 2 and a control system of a product handling mechanism, wherein the wire feeding head anti-drawing module 2 includes a fixed block 21, a rotating block 22, a position sensing device 23 and an elastic reset device, wherein the fixed block 21 can be fixedly mounted on a welding device, and the rotating block 22 can be mounted on the fixed block 21 at a set angle in the handling direction of the product handling mechanism, and the wire feeding head 1 for supplying welding wire is fixedly mounted on the rotating block 22, and the elastic reset device can provide the rotating block 22 with an elastic reset force along its swinging direction, and the elastic reset force keeps the rotating block 22 in the absence of external force. At the set welding position, the position sensing device 23 is fixedly installed on the fixed block 21. The position sensing device 23 can sense whether the rotating block 22 deviates from the set welding position due to swinging. The position sensing device 23 communicates with the control system of the product conveying mechanism through wired or wireless means. The position sensing device 23 can transmit the acquired position information of the rotating block 22 to the control system of the product conveying mechanism. The control system of the product conveying mechanism can determine whether wire drawing occurs after the product welding is completed based on the position information of the rotating block 22. When the control system determines that wire drawing occurs after the product welding is completed, it controls the product conveying mechanism to stop the conveying action.

[0023] The wire feeding head anti-drawing module 2 allows the wire feeding head 1 to rotate within a set small angle range, and increases the elastic holding force of the rotating block 22 through an elastic reset device, so that under normal circumstances the rotating block 22 remains in the welding position. When the wire feeding head 1 is producing wire and the steel plate product is sticky, the conveying mechanism of the automated equipment is still conveying the steel plate product, driving the wire feeding head 1 to move synchronously with the steel plate product, and then the wire feeding head 1 will cause the rotating block 22 to rotate quickly to a certain angle, triggering the position sensing device 23. The position sensing device 23 transmits a signal to the control system of the automated equipment to perform a shutdown action, thereby protecting the wire feeding device from damage and reducing the risk of collision.

[0024] The fixed block 21 is provided with a first stop wall 211 and a second stop wall 212, and the two side walls of the rotating block 22 along its swinging direction are respectively stopped between the first stop wall 211 and the second stop wall 212 of the fixed block 21, and an elastic slide 213 is provided in the fixed block 21, and a positioning slider 214 is provided in the elastic slide 213. The positioning slider 214 can slide a set distance in the elastic slide 213, and a spring 215 is also installed in the elastic slide 213. The spring 215 presses against the positioning slider 214 so that its end extends out of the elastic slide 213 and presses against one side wall of the rotating block 22 along its swinging direction, so that the other side wall of the rotating block 22 presses against the second stop wall 212 of the fixed block 21.

[0025] The elastic reset device is composed of a spring 215 and a positioning slider 214 inside the elastic slide 213. The spring 215 presses against the positioning slider 214, so that the positioning slider 214 elastically slides in the elastic slide 213. The end of the positioning slider 214 extends out of the elastic slide 213 and presses against one side wall of the rotating block 22, so that the other side wall of the rotating block 22 presses against the second stop wall 212 of the fixed block 21, and the rotating block 22 is in a normal welding position. In addition, the elastic reset device can also be a torsion spring or a spring.

[0026] One end of the positioning slider 214 is in close contact with a side wall of the rotating block 22 along its swinging direction through the convex spherical surface 2141, and the other end of the positioning slider 214 is provided with a spring slot 2142, and the other end of the spring 215 is inserted into the spring slot 2142 and is in close contact with the bottom surface of the elastic slot. The positioning slider 214 is in contact with the rotating block 22 through the convex spherical surface 2141, and the friction force is small. The spring slot 2142 on the spring has a positioning and guiding effect on the spring 215.

[0027] An adjusting screw is movably screwed in one end of the elastic slideway 213 facing away from the rotating block 22, and the stud end of the adjusting screw is pressed against one end of the spring 215 to realize the positioning of one end of the spring 215 and the adjustment of the elastic restoring force of the spring 215. The elastic restoring device controls the elastic force of the spring 215 by adjusting the length of the screw.

[0028] The fixing block 21 is an L-shaped block structure with an acute angle formed between the first stop wall 211 and the second stop wall 212, wherein the second stop wall 212 extends in the horizontal direction, and the first stop wall 211 is provided with a horizontally extending concave structure, which together with the second stop wall 212 forms a U-shaped opening slot 216, and the U-shaped opening slot 216 and the second stop wall 212 are connected by an arc surface 2161, and the two sides of the fixing block 21 perpendicular to the second stop wall 212 can also be disassembled. The left and right cover plates 24 are fixedly installed, and a plug-in protrusion 221 is formed on the side wall of the rotating block 22. The plug-in protrusion 221 is inserted into the U-shaped opening slot 216. The plug-in protrusion 221 is provided with a horizontally extending shaft hole 222, and a suspension shaft 25 is rotatably inserted in the shaft hole 222. The two ends of the suspension shaft 25 are respectively fixedly connected to the left and right cover plates 24, and the outer wall of the plug-in protrusion 221 contacts the arc surface of the U-shaped opening slot 216 through a convex arc surface 223 coaxial with the shaft hole 222. The rotating block 22 can only rotate to a set small angle through the above structure. When it is positioned on the fixed block 21 and in the normal welding position, the rotating block 22 is in close contact with the second stop wall 212 of the fixed block 21 through the horizontal plane, and a stable welding position can be maintained.

[0029] The position sensing device 23 is a safety switch, and the safety switch can be triggered after the rotating block 22 rotates to a set angle. The position sensing device 23 can also be a photoelectric switch or a contact sensor, etc.

[0030] A wire feeding head 1 fine-tuning mechanism is also provided, wherein the Z direction is a vertical up-and-down direction, and the X direction and the Y direction are two mutually perpendicular directions in a horizontal plane. The wire feeding head 1 fine-tuning mechanism comprises a fixed mounting seat 31, an X-direction slide 32, a Z-direction slide 33, a Y-direction slide 34, an X-direction micrometer fine-tuning device, a Z-direction micrometer fine-tuning device, a Y-direction micrometer fine-tuning device, an X-direction clamping and positioning device, a Y-direction clamping and positioning device, wherein the fixed mounting seat 31 can be fixedly mounted on the welding device, the X-direction slide 32 can be mounted on the fixed mounting seat 31 so as to slide back and forth in a straight line in the X direction, the Z-direction slide 33 can be mounted on the X-direction slide 32 so as to slide back and forth in a straight line in the Z direction, and the Y-direction slide 34 can be mounted on the X-direction slide 32 so as to slide back and forth in a straight line in the Y direction. The complex sliding device is installed on the Z-axis slide 33, and the fixed ends of the X-axis micrometer fine-tuning device, the Z-axis micrometer fine-tuning device and the Y-axis micrometer fine-tuning device are respectively fixedly installed on the fixed mounting seat 31, the X-axis slide 32 and the Z-axis slide 33. The moving ends of the X-axis micrometer fine-tuning device, the Z-axis micrometer fine-tuning device and the Y-axis micrometer fine-tuning device can respectively drive the X-axis slide 32, the Z-axis slide 33 and the Y-axis slide 34 to move and thus adjust the position of the wire feeding point in the X direction, the Z direction and the Y direction. The X-axis clamping and positioning device, the Y-axis clamping and positioning device and the Z-axis clamping and positioning device can respectively clamp and fix the X-axis slide 32 with the fixed mounting seat 31, the Z-axis slide 33 with the X-axis slide 32, and the Y-axis slide 34 with the Z-axis slide 33.

[0031] A fine-tuning mechanism for the wire feeding head 1 is set at the end of the laser wire feeding welding. It is necessary to fine-tune the wire feeding point in three dimensions to accurately reach the welding position. A micrometer mechanism is used to fine-tune the distance with high fine-tuning accuracy. A reinforced clamping block is used as a clamping and positioning device to fix the position of the slide. After adjustment, the position of the wire feeding point can also be guaranteed not to change during welding.

[0032] The fixed mounting seat 31, the X-axis slide 32 and the Z-axis slide 33 are respectively fixedly mounted with micro precision ball guide rails 35 extending in a straight line in the X direction, the Z direction and the Y direction. The X-axis slide 32, the Z-axis slide 33 and the Y-axis slide 34 are respectively in contact with the micro precision ball guide rails 35 through four-point grooves. The micro precision ball guide rail 35 slide adopts four-point groove contact, which has good rigidity and high precision.

[0033] A connecting plate 4 and a profiling reinforcement module are also provided, wherein the connecting plate 4 is fixedly mounted on the rotating block 22 of the anti-wire drawing module, and the profiling reinforcement module comprises a first profiling reinforcement block 51, a second profiling reinforcement block 52 and a connecting piece, wherein a first pipe accommodating groove is formed on the inner side of the first profiling reinforcement block 51, and a second pipe accommodating groove is formed on the inner side of the second profiling reinforcement block 52, wherein the first profiling reinforcement block 51 can be fixedly connected to the second profiling reinforcement block 52 through the connecting piece to form an integrated structure, and the first pipe accommodating groove and the second pipe accommodating groove can be spliced ​​to form an accommodating channel matching the pipe at the end of the wire feeding head 1 The upper end of the accommodating channel extends in the vertical direction, and the lower end of the accommodating channel extends obliquely downward. The upper and lower ends of the accommodating channel are connected by a tangent arc segment. At least one of the first profiling reinforcement block 51 and the second profiling reinforcement block 52 is fixedly installed on the connecting plate 4. The end fixing mechanism of the wire feeding head 1 is made of 7 series high-strength aluminum alloy material to make a two-piece first profiling fixing block 21 and a second profiling fixing block 21. The head and tail ends of the two are coaxially covered on the outside of the terminal pipe of the wire feeding head 1 by a screw mechanism. The head of the wire feeding head 1 is only suspended by about 3 cm, which has better rigidity and is not easy to deform.

[0034] The wire guide pipe, water cooling pipe and shielding gas pipe are coaxially arranged in the pipe at the end of the wire feeding head 1. An integrated joint is arranged at the upper end of the pipe at the end of the wire feeding head 1. One end of the integrated joint is respectively connected with the wire guide pipe, water cooling pipe and shielding gas pipe, and the other end of the integrated joint is respectively connected with the wire supply pipe, water supply pipe and shielding gas supply pipe by means of a quick-tightening plug tightened by a thread. The above structure forms a coaxial shielding gas device for laser wire feeding welding. Four joints (two water cooling, one wire guide pipe and one shielding gas pipe) are integrated vertically above the wire feeding head 1. The water pit pipe, wire feeding pipe and shielding gas pipe are installed by means of a quick-tightening plug tightened by a thread. In this way, the shielding gas circuit is not affected by any pipe bending, and the internal pipe of the wire feeding head 1 is shaped by a long distance, so that the final gas outlet uniformity is higher.

Claims

1. A wire feeding head device, characterized in that: The invention comprises a wire feeding head (1), a wire feeding head anti-wire drawing module (2) and a control system of a product handling mechanism, wherein the wire feeding head anti-wire drawing module comprises a fixed block (21), a rotating block (22), a position sensing device (23) and an elastic reset device, wherein the fixed block can be fixedly mounted on a welding device, the rotating block can be mounted on the fixed block and can be swung at a set angle in the handling direction of the product handling mechanism, the wire feeding head for supplying welding wire is fixedly mounted on the rotating block, the elastic reset device can provide the rotating block with an elastic reset force along its swinging direction, the elastic reset force enables the rotating block to remain at a set welding position in the absence of external force, the position sensing device is fixedly mounted on the fixed block, the position sensing device can sense whether the rotating block is separated from the set welding position due to swinging, the position sensing device communicates with the control system of the product handling mechanism via a wired or wireless method, the position sensing device can transmit the acquired position information of the rotating block to the control system of the product handling mechanism, the control system of the product handling mechanism can judge whether wire drawing occurs after the product welding is completed according to the position information of the rotating block, and when the control system judges that wire drawing occurs after the product welding is completed, the product handling mechanism stops the handling action.

2. The wire feeding head device according to claim 1, characterized in that: The fixed block is provided with a first stop wall (211) and a second stop wall (212), and the two side walls of the rotating block along the swinging direction are respectively stopped between the first stop wall and the second stop wall of the fixed block, and an elastic slideway (213) is provided in the fixed block, and a positioning slider (214) is provided in the elastic slideway. The positioning slider can slide a set distance in the elastic slideway, and a spring (215) is also installed in the elastic slideway. The spring is tightly pressed against the positioning slider so that its end extends out of the elastic slideway and is tightly pressed against a side wall of the rotating block along the swinging direction, so that the other side wall of the rotating block is tightly pressed against the second stop wall of the fixed block.

3. The wire feeding head device according to claim 2, characterized in that: One end of the positioning slider is in close contact with a side wall of the rotating block along its swinging direction through a convex spherical surface (2141), and the other end of the positioning slider is provided with a spring slot (2142). The other end of the spring is inserted into the spring slot and tightly abuts against the bottom surface of the elastic slot.

4. The wire feeding head device according to claim 2, characterized in that: An adjusting screw is movably threaded in one end of the elastic slideway facing away from the rotating block, and the stud end of the adjusting screw is tightly against one end of the spring to realize the positioning of one end of the spring and the adjustment of the elastic restoring force of the spring.

5. The wire feeding head device according to claim 2, characterized in that: The fixed block is an L-shaped block structure with an acute angle formed between the first stop wall and the second stop wall, wherein the second stop wall extends in the horizontal direction, and a horizontally extending concave structure is provided on the first stop wall, and the concave structure and the second stop wall together form a U-shaped opening slot (216), and the U-shaped opening slot and the second stop wall are connected by an arc surface (2161), and the two sides of the fixed block perpendicular to the second stop wall are also detachably fixedly installed with a left cover plate and a right cover plate (24), and a plug-in protrusion (221) is formed on the side wall of the rotating block, and the plug-in protrusion is inserted into the U-shaped opening slot, and a horizontally extending shaft hole (222) is provided on the plug-in protrusion, and a suspension shaft (25) is rotatably inserted in the shaft hole, and the two ends of the suspension shaft are fixedly connected to the left cover plate and the right cover plate respectively, and the outer wall of the plug-in protrusion contacts the arc surface of the U-shaped opening slot through a convex arc surface (223) coaxial with the shaft hole.

6. The wire feeding head device according to claim 1, characterized in that: The position sensing device is a safety switch, and the safety switch can be triggered after the rotating block rotates to a set angle.

7. The wire feeding head device according to claim 1, characterized in that: A wire feeding head fine-tuning mechanism is also provided, wherein the Z direction is a vertical up-down direction, and the X direction and the Y direction are two mutually perpendicular directions in a horizontal plane. The wire feeding head fine-tuning mechanism comprises a fixed mounting seat (31), an X-direction slide table (32), a Z-direction slide table (33), a Y-direction slide table (34), an X-direction micrometer fine-tuning device, a Z-direction micrometer fine-tuning device, a Y-direction micrometer fine-tuning device, an X-direction clamping and positioning device, a Y-direction clamping device and a Z-direction clamping and positioning device. The fixed mounting seat can be fixedly mounted on the welding device, the X-direction slide table can be mounted on the fixed mounting seat so as to slide back and forth in a straight line in the X direction, the Z-direction slide table can be mounted on the X-direction slide table so as to slide back and forth in a straight line in the Z direction, and the Y-direction slide table can be mounted on the X-direction slide table so as to slide back and forth in a straight line in the Z direction. The table can be installed on the Z-direction slide table for linear reciprocating sliding along the Y direction. The fixed ends of the X-direction micrometer fine-tuning device, the Z-direction micrometer fine-tuning device and the Y-direction micrometer fine-tuning device are respectively fixedly installed on the fixed mounting seat, the X-direction slide table and the Z-direction slide table. The moving ends of the X-direction micrometer fine-tuning device, the Z-direction micrometer fine-tuning device and the Y-direction micrometer fine-tuning device can respectively drive the X-direction slide table, the Z-direction slide table and the Y-direction slide table to move and thus adjust the position of the wire feeding point in the X-direction, Z-direction and Y-direction directions. The X-direction clamping and positioning device, the Y-direction clamping and positioning device and the Z-direction clamping and positioning device can respectively clamp and fix the X-direction slide table with the fixed mounting seat, the Z-direction slide table with the X-direction slide table, and the Y-direction slide table with the Z-direction slide table.

8. The wire feeding head device according to claim 7, characterized in that: The fixed mounting seat, the X-axis slide and the Z-axis slide are respectively fixedly mounted with micro-precision ball guide rails (35) extending linearly in the X, Z and Y directions; the X-axis slide, the Z-axis slide and the Y-axis slide are respectively in contact with the micro-precision ball guide rails through four-point grooves.

9. The wire feeding head device according to claim 8, characterized in that: A connecting plate (4) and a contoured reinforcement module are also provided, wherein the connecting plate is fixedly mounted on the rotating block of the anti-wire drawing module, and the contoured reinforcement module comprises a first contoured reinforcement block (51), a second contoured reinforcement block (52) and a connecting piece, wherein a first pipe accommodating groove is formed on the inner side of the first contoured reinforcement block, and a second pipe accommodating groove is formed on the inner side of the second contoured reinforcement block, wherein the first contoured reinforcement block can be fixedly connected to the second contoured reinforcement block through the connecting piece to form an integrated structure, and the first pipe accommodating groove and the second pipe accommodating groove can be spliced ​​to form an accommodating channel matching the pipe at the end of the wire feeding head, wherein the upper end of the accommodating channel extends in a vertical direction, and the lower end of the accommodating channel extends obliquely downward, and the upper and lower ends of the accommodating channel are connected by a tangent arc segment, and at least one of the first contoured reinforcement block and the second contoured reinforcement block is fixedly mounted on the connecting plate.

10. The wire feeding head device according to claim 1 or 8, characterized in that: A wire guide pipe, a water cooling pipe and a shielding gas pipe are coaxially arranged in the pipe at the end of the wire feeding head. An integrated joint is arranged at the upper end of the pipe at the end of the wire feeding head. One end of the integrated joint is respectively connected to the wire guide pipe, the water cooling pipe and the shielding gas pipe, and the other end of the integrated joint is respectively connected to the wire supply pipe, the water supply pipe and the shielding gas supply pipe by means of a quick-tightening plug that is threaded.

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