A pressure resistance welding device for winding wire on a slender tube

Abstract

The present invention relates to a pressure resistance welding device for winding wire on an elongated tube. A first welding assembly, a second welding assembly, and a wire clamping and rotating mechanism are all arranged on a welding bracket. A wire feeding mechanism and an auxiliary correction mechanism are movably arranged on both sides of the welding bracket. A plurality of supporting wheel seats with supporting wheel drive assemblies and supporting wheels are arranged on the welding bracket. The chuck and the rotating shaft in the wire clamping and rotating mechanism are driven to rotate synchronously by a rotating motor, and the rotating motor transmits torque through a rotating transmission assembly. The supporting wheel is driven to rotate by the rotating shaft, and the rotating shaft transmits torque through the supporting wheel drive assembly. The first welding assembly is provided with a first electrode that can be opened and closed. The second welding assembly is provided with a centering sleeve and a second electrode that can be opened and closed. The wire feeding mechanism is provided with a pick-up jaw that can be opened and closed. The auxiliary correction mechanism is provided with a correction tooling that can be opened and closed. The present invention can automatically realize the operations of winding wire on the steel tube and welding the steel tube and the wire, and ensure the product quality.

Description

Technical Field

[0001] The present invention relates to the field of welding devices, and more particularly to a pressure resistance welding device for winding wire around a slender tube. Background Art

[0002] With the rapid development of modern industry, the requirements in various fields are becoming more and more refined. Among them, the product of winding spiral stainless steel fine wire on a slender stainless steel tube has been applied in some industrial fields, such as aviation, shipbuilding, nuclear power, etc. The characteristics of this product are that the workpiece is difficult to process, the production cost is high, and it is only used in specific industrial fields, and the development of processing technology is relatively slow. The traditional method usually uses argon arc welding to fix the spiral stainless steel fine wire on the slender stainless steel tube, but this method has obvious defects, such as uneven fixing and forming of the product, great differences in mechanical parameters, poor consistency, etc., which results in low production efficiency and finished product rate of the product, and unstable production. Pressure resistance welding was invented at the end of the 19th century, and its research and development background itself is as a connection and fixation for thin parts and thin parts, and the slender stainless steel tube and the slender stainless steel wire just meet the characteristics of such welding base materials. How to apply this welding method to the welding of the slender stainless steel tube and the slender stainless steel wire is a problem that needs to be considered. Summary of the Invention

[0003] The purpose of the present invention is to provide a pressure resistance welding device for winding wire around a slender tube, which can automatically realize the wire winding of the steel tube and the welding operation of the steel tube and the steel wire, ensure the consistency of the welds at both ends of the steel tube and the welding quality, and at the same time ensure the quality and consistency of the wire winding of the steel wire, ensure the product quality, and greatly improve the production efficiency.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] An elongated tube wire-wound welding pressure resistance welding device, comprising a wire clamping and rotating mechanism, a first welding assembly, a second welding assembly, a wire feeding mechanism, and an auxiliary correction mechanism. The first welding assembly and the second welding assembly are movably arranged on a welding bracket. The wire clamping and rotating mechanism is arranged at the end of the welding bracket close to the first welding assembly. The wire feeding mechanism is movably arranged on one side of the welding bracket, and the auxiliary correction mechanism is movably arranged on the other side of the welding bracket. A plurality of support wheel seats are arranged on the welding bracket, and a support wheel drive assembly and support wheels are arranged on the support wheel seats. The wire clamping and rotating mechanism includes a rotating motor, a rotating drive assembly, a rotating shaft, and a chuck. The chuck and the rotating shaft are driven to rotate synchronously by the rotating motor, and the rotating motor transmits torque through the rotating drive assembly. The support wheels are driven to rotate by the rotating shaft, and the rotating shaft transmits torque through the support wheel drive assembly. The first welding assembly is provided with a first electrode, the second welding assembly is provided with a centering sleeve and a second electrode, the wire feeding mechanism is provided with a picking jaw, and the auxiliary correction mechanism is provided with a correction tooling. The wire is first clamped with the head end of the steel pipe through the correction tooling and welded by the first electrode. Then the head end of the steel pipe is clamped by the picking jaw and sent into the chuck for fixation. And the centering sleeve moves with the second welding assembly and is sleeved on the end of the steel pipe. Then the steel pipe is driven to rotate by the chuck and the support wheels. At the same time, the wire feeding mechanism releases the wire and the wire moves from the head end of the steel pipe to the end of the steel pipe. Then the centering sleeve moves out of the end of the steel pipe with the second welding assembly while the second electrode moves to the end of the steel pipe. Then the wire is clamped with the end of the steel pipe through the correction tooling and welded by the second electrode.

[0006] The rotating drive assembly of the wire clamping and rotating mechanism includes a rotating driving pulley, a rotating transmission belt, and a rotating driven pulley. The rotating driving pulley is coaxially fixed to the chuck and driven to rotate by the rotating motor. The rotating driving pulley is connected to the rotating driven pulley through the rotating transmission belt, and the rotating driven pulley is coaxially fixed to the rotating shaft. The support wheel drive assembly includes a support driving wheel and a support transmission belt. The support driving wheel is arranged on the rotating shaft, and the support driving wheel is connected to the corresponding support wheel through the support transmission belt.

[0007] The first welding assembly includes a first sliding seat, a first driving component, a first steel pipe clamping cylinder, a first electrode clamping cylinder, and a first spring. The first sliding seat is slidably connected to the welding bracket and driven to move by the first driving component. The first steel pipe clamping cylinder, the first electrode clamping cylinder, and the first spring are all arranged on the first sliding seat. The upper end of the first steel pipe clamping cylinder is provided with a clamp jaw that can open and close. One end of the first spring is fixedly arranged on the first sliding seat, and a first electrode is arranged at the other end of the first spring and at the end of the cylinder rod of the first electrode clamping cylinder.

[0008] The first driving assembly includes a first motor, a first driving pulley, a first transmission belt, a first driven pulley, a first lead screw and a first nut. The first motor, the first driven pulley and the first lead screw are all arranged on the welding bracket. The first driving pulley is mounted on the output shaft of the first motor, and the first driving pulley is connected to the first driven pulley through the first transmission belt. The first driven pulley is coaxially and fixedly connected to the first lead screw. The first nut is sleeved on the first lead screw and fixedly connected to the first sliding seat.

[0009] The second welding assembly includes a second sliding seat, a second driving assembly, a second electrode clamping cylinder and a second spring. The second sliding seat is slidably connected to the welding bracket and is driven to move by the second driving assembly. The centering sleeve, the second electrode clamping cylinder and the second spring are all arranged on the second sliding seat. One end of the second spring is fixedly arranged on the second sliding seat. Second electrodes are arranged at the other end of the second spring and the end of the cylinder rod of the second electrode clamping cylinder. The centering sleeve is coaxial with the chuck and is arranged on the side of the second electrode away from the first welding assembly.

[0010] The second driving assembly includes a second motor, a second lead screw and a second nut. The second lead screw is driven to rotate by the second motor. The second nut is sleeved on the second lead screw and fixedly connected to the second sliding seat.

[0011] The steel wire wire feeding mechanism includes a driving sliding seat and a moving driving assembly. The steel wire wire feeding mechanism is arranged on a wire feeding bracket. The driving sliding seat is slidably connected to the wire feeding bracket and is driven to move by the moving driving assembly. A wire feeder is arranged on the driving sliding seat. An installation seat is arranged at the upper end of the driving sliding seat. A pressing wheel cylinder, a second steel pipe clamping cylinder, a cylinder driving device and the output port of the wire feeder are arranged on the installation seat. A pressing wheel is arranged at the end of the cylinder rod of the pressing wheel cylinder, and the pressing wheel is located above the output port of the wire feeder. The second steel pipe clamping cylinder is driven to move by the cylinder driving device, and a pick-up jaw that can open and close is arranged at the lower end of the second steel pipe clamping cylinder.

[0012] The moving driving assembly includes a driving motor, a driving driving pulley, a driving transmission belt, a driving driven pulley, a driving lead screw and a driving nut. The driving motor, the driving driven pulley and the driving lead screw are all arranged on the wire feeding bracket. The driving driving pulley is mounted on the output shaft of the driving motor, and the driving driving pulley is connected to the driving driven pulley through the driving transmission belt. The driving driven pulley is coaxially and fixedly connected to the driving lead screw. The driving nut is sleeved on the driving lead screw and fixedly connected to the driving sliding seat.

[0013] The auxiliary correction mechanism includes an auxiliary slide, an auxiliary drive assembly, a correction clamping cylinder, a clamp, a first extending cylinder and a second extending cylinder, wherein the auxiliary correction mechanism is arranged on a correction bracket, the auxiliary slide is slidingly connected to the correction bracket and is driven to move by the auxiliary drive assembly, the correction clamping cylinder, the clamp, the first extending cylinder and the second extending cylinder are all arranged on the auxiliary slide, and the correction clamping cylinder is provided with an openable and closable correction tooling, the correction clamping cylinder is driven to move by the first extending cylinder, and the clamp is driven to move by the second extending cylinder.

[0014] The auxiliary drive assembly includes an auxiliary drive motor, an auxiliary driving pulley, an auxiliary driving transmission belt, an auxiliary driven pulley, an auxiliary driving screw and an auxiliary driving nut, wherein the auxiliary drive motor, the auxiliary driven pulley and the auxiliary driving screw are all arranged on the correction bracket, the auxiliary driving pulley is installed on the output shaft of the auxiliary drive motor, and the auxiliary driving pulley is connected to the auxiliary driven pulley through an auxiliary driving transmission belt, the auxiliary driven pulley is coaxially fixed to the auxiliary drive screw, and the auxiliary drive nut is sleeved on the auxiliary drive screw and fixedly connected to the auxiliary slide.

[0015] The advantages and positive effects of the present invention are:

[0016] 1. Since the thin stainless steel pipe is long and flexible, while the thin stainless steel wire is elastic, there is a large inconsistency every time the two are matched, and the accuracy cannot be guaranteed, which is not conducive to ensuring the welding quality. Moreover, when the steel pipe and the steel wire are butt-welded, the contact cross-sectional area is small (point contact), which is even more detrimental to the implementation of welding. The present invention uses the auxiliary correction mechanism to correct the distance between the two, which not only brings them closer, but also increases their effective contact area, which is more conducive to the forming of pressure resistance welding and ensures the welding quality.

[0017] 2. The present invention can ensure that the steel pipe is firmly positioned before welding, and the electrodes are all in the form of a combination of cylinders and springs, so that the magnitude of the applied force is always the spring force, thereby ensuring that the forces applied by the two electrodes to the steel pipe and steel wire during welding are consistent, effectively ensuring the consistency of the welding seam and the forming.

[0018] 3. The present invention completes the wire winding operation through the cooperation of a steel pipe clamping and rotating mechanism, a supporting wheel, a wire unwinding mechanism, etc., wherein the chuck and the transmission shaft in the steel pipe clamping and rotating mechanism are driven by the same motor, so that the rotation speed of each supporting wheel can be coordinated with the rotation speed of the chuck, thereby driving the entire steel pipe to rotate at the same rotation speed, and during the winding process, the end of the steel pipe is supported by the centering sleeve in the second welding assembly to ensure coaxiality with the head end of the steel pipe, and at the same time, the wire unwinding mechanism is provided with a pressure wheel to press the steel pipe, thereby fully ensuring the quality of the steel wire winding, and making the quality of the processed products stable and consistent.

[0019] 4. The present invention can monitor the rotation angle of the steel pipe in real time, so as to accurately determine the rotation position of the steel pipe. At the same time, the equipment system of the present invention can automatically control the movement or rotation of each mechanism, so as to cooperate to complete the welding and wire winding operations of the steel pipe, with a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a top view of the present invention,

[0021] Figure 2 is Figure 1 the front view of the steel pipe clamping and rotating mechanism in

[0022] Figure 3 is Figure 1 the top view of the first welding assembly in

[0023] Figure 4 is Figure 3 the front view of the first welding assembly in

[0024] Figure 5 is Figure 3 the left view of the first welding assembly in

[0025] Figure 6 is Figure 1 the front view of the wire feeding mechanism in

[0026] Figure 7 is Figure 6 the right view of the wire feeding mechanism in

[0027] Figure 8 is Figure 1 the top view of the auxiliary correction mechanism in

[0028] Figure 9 is Figure 8 the front view of the auxiliary correction mechanism in

[0029] Figure 10 is Figure 8 the left view of the auxiliary correction mechanism in

[0030] Figure 11 is Figure 1 the top view of the second welding assembly in

[0031] Figure 12 is Figure 11 the front view of the second welding assembly in

[0032] Figure 13 is Figure 11 the left view of the second welding assembly in.

[0033] Among them, 1 is a wire clamping and rotating mechanism, 101 is a rotating motor, 102 is a rotating transmission belt, 103 is a chuck, 104 is a rotating shaft, 105 is a supporting transmission belt, 106 is a supporting wheel, 107 is an angle sensor, 2 is a first welding assembly, 201 is a first sliding seat, 202 is a first motor, 203 is a first transmission belt, 204 is a first end seat, 205 is a first lead screw, 206 is a first slider, 207 is a first steel pipe clamping cylinder, 2071 is a clamping jaw, 208 is a first electrode clamping cylinder, 209 is a first spring, 210 is a first electrode, 3 is a second welding assembly, 301 is a second motor, 302 is a centering sleeve, 303 is a second lead screw, 304 is a second electrode, 305 is a second electrode clamping cylinder, 306 is a second spring, 4 is an auxiliary correction mechanism, 401 is an auxiliary driving motor, 402 is an auxiliary driving transmission belt, 403 is an auxiliary driving lead screw, 404 is an auxiliary sliding seat, 4041 is an auxiliary driving slider, 405 is a clamp, 406 is a correction clamping cylinder, 4061 is a correction tooling, 407 is a second end seat, 5 is a wire feeding mechanism, 501 is a driving motor, 502 is a driving transmission belt, 503 is a driving lead screw, 504 is a driving sliding seat, 5041 is a driving slider, 505 is a pressure wheel, 506 is a pressure wheel cylinder, 507 is a second steel pipe clamping cylinder, 5071 is a picking jaw, 508 is a mounting seat, 509 is a wire feeder, 6 is a correction bracket, 601 is a third slide rail, 7 is a welding bracket, 701 is a supporting wheel seat, 702 is a detection support, 703 is a first slide rail, 8 is a wire feeding bracket, 801 is a second slide rail, 9 is a steel pipe. Detailed implementation mode

[0034] The present invention will be further described in detail below with reference to the accompanying drawings.

[0035] As Figures 1 to 13 shown, the present invention includes a wire clamping and rotating mechanism 1, a first welding assembly 2, a second welding assembly 3, a wire feeding mechanism 5 and an auxiliary correction mechanism 4. Among them, the first welding assembly 2 and the second welding assembly 3 are both movably arranged on a welding bracket 7. The wire clamping and rotating mechanism 1 is arranged at the end of the welding bracket 7 close to the first welding assembly 2. The wire feeding mechanism 5 is movably arranged on one side of the welding bracket 7, and the auxiliary correction mechanism 4 is movably arranged on the other side of the welding bracket 7. As Figures 1 to 2 shown, a plurality of supporting wheel seats 701 are arranged on the welding bracket 7, and each supporting wheel seat 701 is arranged between the first welding assembly 2 and the second welding assembly 3. A supporting wheel transmission assembly and a supporting wheel 106 are arranged on the supporting wheel seat 701. As Figure 2As shown, the wire clamping and rotating mechanism 1 includes a rotating motor 101, a rotating transmission assembly, a rotating shaft 104, and a chuck 103. The chuck 103 and the rotating shaft 104 are driven to rotate synchronously by the rotating motor 101, and the rotating motor 101 transmits torque through the rotating transmission assembly. The support wheel 106 is driven to rotate by the rotating shaft 104, and the rotating shaft 104 transmits torque through the support wheel transmission assembly, as Figures 3 to 5 As shown, the first welding assembly 2 is provided with a first electrode 210 that can open and close, as Figures 11 to 13 As shown, the second welding assembly 3 is provided with a centering sleeve 302 and a second electrode 304 that can open and close, as Figures 6 to 7 As shown, the wire feeding mechanism 5 is provided with a pick-up jaw 5071 that can open and close, as Figures 8 to 10 As shown, the auxiliary correction mechanism 4 is provided with a clamp 405 and a correction tooling 4061 that can open and close.

[0036] During the operation of the present invention, the steel pipe 9 is supported by the support wheels 106 at the upper ends of each support wheel seat 701. Then, the auxiliary correction mechanism 4 and the wire feeding mechanism 5 move to one end of the welding bracket 7 provided with the first welding assembly 2. When the wire released by the wire feeding mechanism 5 is aligned with the head end of the steel pipe 9, the correction tooling 4061 of the auxiliary correction mechanism 4 extends and closes to assist in clamping the wire and the head end of the steel pipe 9. The correction tooling 4061 can increase the contact area between the wire and the head end of the steel pipe 9, and it is a profiling structure that matches the outer shape of the steel pipe 9. Then, the first welding assembly 2 moves to the head end of the steel pipe 9, and the first electrode 210 closes to clamp the wire and the steel pipe 9. The first electrode 210 is energized to realize the welding of the wire end and the head end of the steel pipe 9. After the welding is completed, the correction tooling 4061 releases the steel pipe 9 and retracts. The pick-up jaw 5071 in the wire feeding mechanism 5 clamps the steel pipe 9, and the wire feeding mechanism 5 moves to feed the head end of the steel pipe 9 into the chuck 103 of the wire clamping and rotating mechanism 1 for clamping and fixing. The second welding assembly 3 moves to sleeved the centering sleeve 302 on the other end of the steel pipe 9. Then, the rotation motor 101 in the wire clamping and rotating mechanism 1 starts to drive the chuck 103 and the rotating shaft 104 to rotate simultaneously. At the same time, the wire feeding mechanism 5 moves along the length direction of the welding bracket 7 to release the wire, and the wire is wound around the steel pipe 9 as the steel pipe 9 rotates. The transmission shaft 104 and the chuck 103 are driven by the same motor to rotate synchronously, which can make the rotation speeds of the support wheels 106 match the rotation speed of the chuck 103, so as to drive the whole steel pipe 9 to rotate at the same rotation speed. During the winding process, since the centering sleeve 302 and the center of the chuck 103 are coaxially arranged, the end of the steel pipe 9 is supported by the centering sleeve 302 to ensure the coaxiality with the head end of the steel pipe 9, thereby ensuring the wire winding quality and making the processed products more stable and consistent. When the wire winds to the end of the steel pipe 9, the auxiliary correction mechanism 4 also moves to the end of the steel pipe 9, and the correction tooling 4061 extends and closes again to assist in clamping the wire and the end of the steel pipe 9. Then, the clamp 405 extends to cut the wire. Then, the second welding assembly 3 moves backward to withdraw the centering sleeve 302 from the end of the steel pipe 9 while the second electrode 304 moves to the end of the steel pipe 9, and then the second electrode 304 closes to complete the welding operation of the end of the steel pipe 9 and the wire. The chuck 103 is a well-known technology in the art.

[0037] As Figure 2 shown in the figure, in this embodiment, the rotation transmission assembly of the wire clamping and rotating mechanism 1 includes a rotation driving pulley, a rotation transmission belt 102, and a rotation driven pulley. The rotation driving pulley is coaxially fixed to the chuck 103 and is driven to rotate by the rotation motor 101. The rotation driving pulley is connected to the rotation driven pulley through the rotation transmission belt 102, and the rotation driven pulley is coaxially fixed to the rotating shaft 104.

[0038] As Figure 2As shown, in this embodiment, the support wheel drive assembly includes a support drive wheel and a support belt 105. The support drive wheel is provided on the rotating shaft 104, and the support drive wheel is connected to the corresponding support wheel 106 through the support belt 105.

[0039] As Figure 2 shown, a detection support 702 is provided on the welding bracket 7, and an angle sensor 107 is provided on the detection support 702 for real-time detection of the rotation angle of the steel pipe 9. In this embodiment, an end plug with a notch is provided at the end of the steel pipe 9. The angle sensor 107 can accurately detect the notch angle of the end plug, and thus can accurately determine the welding and fixing position of the steel wire and the end plug. The angle sensor 107 is a well-known technology in the art and is a commercially available product.

[0040] As Figures 3 to 5 shown, the first welding assembly 2 includes a first sliding seat 201, a first drive assembly, a first steel pipe clamping cylinder 207, a first electrode clamping cylinder 208, and a first spring 209. The first sliding seat 201 is slidably connected to the welding bracket 7. A first slide rail 703 is provided on the welding bracket 7. A first slider 206 cooperating with the first slide rail 703 is provided on the lower side of the first sliding seat 201. The first steel pipe clamping cylinder 207, the first electrode clamping cylinder 208, and the first spring 209 are all provided on the first sliding seat 201. As Figure 5 shown, a clamp jaw 2071 that can open and close is provided at the upper end of the first steel pipe clamping cylinder 207. During welding, the clamp jaw 2071 is driven by the first steel pipe clamping cylinder 207 to clamp the head end of the steel pipe 9, so as to firmly fix the steel pipe 9 before welding the steel pipe 9 and the steel wire, ensuring the position of the steel pipe 9. In addition, as Figure 3 and Figure 5 shown, one end of the first spring 209 is fixedly provided on the first sliding seat 201, and an electrode seat A is provided at the other end. The rod end of the first electrode clamping cylinder 208 is provided with an electrode seat B. Two first electrodes 210 are respectively installed on the corresponding electrode seats. During welding, the first electrode clamping cylinder 208 drives the electrode seat B to move, so that the corresponding first electrode 210 cooperates with the other first electrode 210 to clamp the steel pipe 9. The present invention uses the cooperation of a cylinder and a spring for clamping, which can ensure that the clamping force is always the spring force, and further ensure that the acting forces of the two first electrodes 210 on the steel pipe 9 and the steel wire are consistent, effectively ensuring the consistency of the welding seam and the forming.

[0041] As Figures 3 to 5As shown in the figure, in this embodiment, the first driving assembly includes a first motor 202, a first driving pulley, a first transmission belt 203, a first driven pulley, a first lead screw 205 and a first nut. The first motor 202 is arranged on the welding bracket 7. The first driving pulley is installed on the output shaft of the first motor 202. A first end seat 204 is arranged on the welding bracket 7. The first driven pulley is arranged in the first end seat 204. The first driving pulley is connected to the first driven pulley through the first transmission belt 203. The first driven pulley is coaxially and fixedly connected to the first lead screw 205. The first nut is sleeved on the first lead screw 205 and fixedly installed on the first sliding seat 201. The first motor 202 drives the first lead screw 205 to rotate by transmitting torque through the first transmission belt 203. The rotation of the first lead screw 205 drives the first nut to move and drives the first sliding seat 201 to move.

[0042] As Figures 11 to 13 shown, the second welding assembly 3 includes a second sliding seat, a second driving assembly, a second electrode clamping cylinder 305 and a second spring 306. The second sliding seat is slidably connected to the welding bracket 7. A slider cooperating with the first slide rail 703 is arranged on the lower side of the second sliding seat. The centering sleeve 302, the second electrode clamping cylinder 305 and the second spring 306 are all arranged on the second sliding seat. The centering sleeve 302 is arranged on the side of the second sliding seat away from the steel pipe 9. One end of the second spring 306 is fixedly arranged on the second sliding seat, and an electrode seat C is arranged at the other end. The end of the cylinder rod of the second electrode clamping cylinder 305 is provided with an electrode seat D. Two second electrodes 304 are respectively installed on the corresponding electrode seats. During welding, the second electrode clamping cylinder 305 drives the electrode seat D to move, so that the corresponding second electrode 304 cooperates with the other second electrode 304 to clamp the steel pipe 9. The functions of the second electrode clamping cylinder 305 and the second spring 306 are the same as those of the first electrode clamping cylinder 208 and the first spring 209, which can ensure that the clamping force is always the spring force, and further ensure that the acting forces of the two second electrodes 304 on the steel pipe 9 and the steel wire are consistent, effectively ensuring the consistency of the welding seam and the forming.

[0043] As Figures 11 to 13 shown, in this embodiment, the second driving assembly includes a second motor 301, a second lead screw 303 and a second nut. The second lead screw 303 is driven to rotate by the second motor 301. The second nut is sleeved on the second lead screw 303 and fixedly connected to the second sliding seat.

[0044] As Figures 6 to 7 shown, the steel wire feeding mechanism 5 includes a driving sliding seat 504 and a moving driving assembly. Among them, as Figure 1As shown in the figure, the wire feeding mechanism 5 of the steel wire is arranged on a wire feeding bracket 8, and the driving slide block 504 is slidably connected to the wire feeding bracket 8. A second slide rail is provided on the wire feeding bracket 8, and a driving slider 5041 that cooperates with the second slide rail is provided on the lower side of the driving slide block 504. The wire feeding machine 509 is arranged on the driving slide block 504. In addition, a cantilever-shaped mounting seat 508 is provided at the upper end of the driving slide block 504, and a pressing wheel cylinder 506, a second steel pipe clamping cylinder 507, a cylinder driving device, and the output port of the wire feeding machine 509 are provided on the mounting seat 508, as Figure 6 shown, a pressing wheel 505 is provided at the end of the cylinder rod of the pressing wheel cylinder 506, and the pressing wheel 505 is located above the output port of the wire feeding machine 509. When the steel pipe 9 is wound with wire, the pressing wheel 505 is used to press the steel pipe 9 against the support wheel 106. The second steel pipe clamping cylinder 507 is driven by the cylinder driving device to move vertically outwards or retract, and a pick-up jaw 5071 that can open and close is provided at the lower end of the second steel pipe clamping cylinder 507. After the head end of the steel pipe 9 is welded to the steel wire, the second steel pipe clamping cylinder 507 is driven by the cylinder driving device to extend, and the pick-up jaw 5071 is closed to clamp the steel pipe 9. Then, the entire wire feeding mechanism 5 of the steel wire moves to send the head end of the steel pipe 9 into the chuck 103 for clamping and fixing. Then, the pick-up jaw 5071 releases the steel pipe 9 and retracts. When the steel pipe 9 starts to rotate, while the wire feeding mechanism 5 of the steel wire moves along the length direction of the welding bracket 7, the wire feeding machine 509 starts to feed wire to realize the wire winding operation of the steel pipe 9. The moving speed and wire feeding speed of the wire feeding mechanism 5 of the steel wire are controlled by the equipment system to cooperate with the rotation speed of the steel pipe 9 to ensure the wire winding quality. During wire winding, the second steel pipe clamping cylinder 507 is always in the retracted state to avoid affecting the wire winding operation. In this embodiment, the cylinder driving device can adopt a linear output device such as a cylinder or a linear push rod, and the wire feeding machine 509 is a well-known technology in the art and is a commercially available product.

[0045] As Figures 6 to 7 shown, in this embodiment, the moving driving assembly includes a driving motor 501, a driving driving pulley, a driving transmission belt 502, a driving driven pulley, a driving lead screw 503, and a driving nut. Among them, the driving motor 501 is arranged on the wire feeding bracket 8, the driving driving pulley is installed on the output shaft of the driving motor 501, the driving driven pulley is arranged on the wire feeding bracket 8, and the driving driving pulley is connected to the driving driven pulley through the driving transmission belt 502. The driving driven pulley is coaxially fixed to the driving lead screw 503, and the driving nut is sleeved on the driving lead screw 503 and is fixed to the driving slide block 504.

[0046] As Figures 8 to 10 shown, the auxiliary correction mechanism 4 includes an auxiliary slide block 404, an auxiliary driving assembly, a clamp 405, a correction clamping cylinder 406, a first extension cylinder, and a second extension cylinder, asFigure 1 As shown, the auxiliary correction mechanism 4 is provided on a correction bracket 6. A third slide rail 601 is provided on the correction bracket 6. An auxiliary driving slider 4041 is provided on the lower side of the auxiliary slide seat 404 and is engaged with the third slide rail 601. The correction clamping cylinder 406 and the clamp 405 are both provided on the auxiliary slide seat 404. As Figure 10 shown, two correction tooling 4061 are provided on the correction clamping cylinder 406. The steel pipe 9 passes through between the two correction tooling 4061, and the two correction tooling 4061 are driven by the correction clamping cylinder 406 to close and clamp the steel pipe 9 and the steel wire. The correction clamping cylinder 406 is driven by a first extending cylinder to move horizontally outwards or inwards. The clamp 405 is driven by a second extending cylinder to move horizontally outwards or inwards. The correction tooling 4061 and the clamp 405 are both well-known techniques in the art, and the clamp 405 can adopt a pneumatic clamp.

[0047] As Figures 8 to 10 shown, in this embodiment, the auxiliary driving assembly includes an auxiliary driving motor 401, an auxiliary driving pulley, an auxiliary driving belt 402, an auxiliary driven pulley, an auxiliary driving lead screw 403 and an auxiliary driving nut. The auxiliary driving motor 401 is provided on the correction bracket 6. The auxiliary driving pulley is installed on the output shaft of the auxiliary driving motor 401. A second end seat 407 is provided on the correction bracket 6. The auxiliary driven pulley is provided in the second end seat 407, and the auxiliary driving pulley is connected to the auxiliary driven pulley through the auxiliary driving belt 402. The auxiliary driven pulley is coaxially fixed to the auxiliary driving lead screw 403. The auxiliary driving nut is sleeved on the auxiliary driving lead screw 403 and is fixed to the auxiliary slide seat 404.

[0048] Power supply devices are provided on both the first welding assembly 2 and the second welding assembly 3 to supply power to the first electrode 210 and the second electrode 304 to achieve welding. This is a well-known technique in the art.

[0049] The working principle of the present invention is as follows:

[0050] When the present invention is in operation, the steel pipe 9 is supported by each supporting wheel 106, and then the auxiliary straightening mechanism 4 and the wire feeding mechanism 5 both move to one end of the welding bracket 7 where the first welding assembly 2 is provided. After the wire released by the wire feeding mechanism 5 is aligned with the head end of the steel pipe 9 (in this embodiment, the head end of the steel pipe 9 is provided with an end plug with a notch, and the head end of the wire is clamped into the notch), the straightening tooling 4061 of the auxiliary straightening mechanism 4 extends and closes to assist in clamping the wire and the head end of the steel pipe 9. Then, the first welding assembly 2 moves to the head end of the steel pipe 9. First, the first steel pipe clamping cylinder 207 is used to drive the clamping jaws 2071 to fix the head end of the steel pipe 9, and then the first electrode 210 is closed to realize the welding of the end of the wire and the head end of the steel pipe 9. Then, the picking jaws 5071 in the wire feeding mechanism 5 clamp the steel pipe 9 and send the head end of the steel pipe 9 into the chuck 103 of the wire clamping and rotating mechanism 1 for clamping and fixing. The second welding assembly 3 moves forward so that the centering sleeve 302 is sleeved on the other end of the steel pipe 9. Then, the rotating motor 101 in the wire clamping and rotating mechanism 1 is started to drive the chuck 103 and the rotating shaft 104 to rotate simultaneously, thereby realizing the overall synchronous rotation of the steel pipe 9. At the same time, the wire feeding mechanism 5 moves along the length direction of the welding bracket 7 to release the wire. As the steel pipe 9 rotates, the wire is wound around the steel pipe 9. When the wire winds to the end of the steel pipe 9, the auxiliary straightening mechanism 4 also moves to the end of the steel pipe 9 and uses the straightening tooling 4061 to extend and close to assist in clamping the wire and the end of the steel pipe 9, and the clamp 405 extends to cut off the wire. At this time, the wire feeding mechanism 5 can move away from the end of the steel pipe 9. Then, the second welding assembly 3 moves backward to make the centering sleeve 302 withdraw from the end of the steel pipe 9, and at the same time, the second electrode 304 moves to the end of the steel pipe 9. Then, the second electrode 304 is closed to complete the welding operation of the end of the steel pipe 9 and the wire.

Claims

1. An apparatus for pressure resistance welding of wire winding on a slender tube, characterized in that: It includes a wire clamping and rotating mechanism (1), a first welding assembly (2), a second welding assembly (3), a wire feeding mechanism (5) and an auxiliary correction mechanism (4). Among them, the first welding assembly (2) and the second welding assembly (3) are movably arranged on a welding bracket (7). The wire clamping and rotating mechanism (1) is arranged at the end of the welding bracket (7) close to the first welding assembly (2). The wire feeding mechanism (5) is movably arranged on one side of the welding bracket (7). The auxiliary correction mechanism (4) is movably arranged on the other side of the welding bracket (7). A plurality of support wheel seats (701) are arranged on the welding bracket (7), and a support wheel drive assembly and support wheels (106) are arranged on the support wheel seats (701). The wire clamping and rotating mechanism (1) includes a rotating motor (101), a rotating drive assembly, a rotating shaft (104) and a chuck (103). The chuck (103) and the rotating shaft (104) are driven by the rotating motor (101) to rotate synchronously, and the rotating motor (101) transmits torque through the rotating drive assembly. The support wheels (106) are driven to rotate by the rotating shaft (104), and the rotating shaft (104) transmits torque through the support wheel drive assembly. The first welding assembly (2) is provided with a first electrode (210). The second welding assembly (3) is provided with a centering sleeve (302) and a second electrode (304). The wire feeding mechanism (5) is provided with a picking jaw (5071). The auxiliary correction mechanism (4) is provided with a correction tooling (4061). The wire is first clamped with the head end of the steel pipe (9) through the correction tooling (4061) and welded by the first electrode (210). Then the head end of the steel pipe (9) is clamped by the picking jaw (5071) and fed into the chuck (103) for fixation. And the centering sleeve (302) moves with the second welding assembly (3) and is sleeved on the end of the steel pipe (9). Then the steel pipe (9) is driven to rotate by the chuck (103) and the support wheels (106). At the same time, the wire feeding mechanism (5) releases the wire and the wire moves from the head end of the steel pipe (9) to the end of the steel pipe (9). Then the centering sleeve (302) moves out of the end of the steel pipe (9) with the second welding assembly (3) while the second electrode (304) moves to the end of the steel pipe (9). Then the wire is clamped with the end of the steel pipe (9) through the correction tooling (4061) and welded by the second electrode (304).

2. The wire-winding welding pressure resistance welding device for the slender tube according to claim 1, characterized in that: The rotating drive assembly of the wire clamping and rotating mechanism (1) includes a rotating driving pulley, a rotating transmission belt (102) and a rotating driven pulley. Among them, the rotating driving pulley is coaxially and fixedly connected with the chuck (103) and is driven to rotate by the rotating motor (101). The rotating driving pulley is connected with the rotating driven pulley through the rotating transmission belt (102). The rotating driven pulley is coaxially and fixedly connected with the rotating shaft (104). The support wheel drive assembly includes a support driving wheel and a support transmission belt (105). The support driving wheel is arranged on the rotating shaft (104), and the support driving wheel is connected with the corresponding support wheel (106) through the support transmission belt (105).

3. The wire winding and welding pressure resistance welding device for the slender tube according to claim 1, characterized in that: The first welding assembly (2) includes a first slide base (201), a first driving assembly, a first steel pipe clamping cylinder (207), a first electrode clamping cylinder (208), and a first spring (209). The first slide base (201) is slidably connected to the welding bracket (7) and is driven to move by the first driving assembly. The first steel pipe clamping cylinder (207), the first electrode clamping cylinder (208), and the first spring (209) are all arranged on the first slide base (201). The upper end of the first steel pipe clamping cylinder (207) is provided with a clamping jaw (2071) that can open and close. One end of the first spring (209) is fixedly arranged on the first slide base (201), and the other end of the first spring (209) and the end of the cylinder rod of the first electrode clamping cylinder (208) are both provided with a first electrode (210).

4. The elongate tube wire winding welding pressure resistance welding device according to claim 3, characterized in that: The first driving assembly includes a first motor (202), a first driving pulley, a first transmission belt (203), a first driven pulley, a first lead screw (205), and a first nut. The first motor (202), the first driven pulley, and the first lead screw (205) are all arranged on the welding bracket (7). The first driving pulley is installed on the output shaft of the first motor (202), and the first driving pulley is connected to the first driven pulley through the first transmission belt (203). The first driven pulley is coaxially and fixedly connected to the first lead screw (205). The first nut is sleeved on the first lead screw (205) and is fixedly connected to the first slide base (201).

5. The wire winding and welding pressure resistance welding device for the slender tube according to claim 1, wherein: The second welding assembly (3) includes a second slide base, a second driving assembly, a second electrode clamping cylinder (305), and a second spring (306). The second slide base is slidably connected to the welding bracket (7) and is driven to move by the second driving assembly. The centering sleeve (302), the second electrode clamping cylinder (305), and the second spring (306) are all arranged on the second slide base. One end of the second spring (306) is fixedly arranged on the second slide base, and the other end of the second spring (306) and the end of the cylinder rod of the second electrode clamping cylinder (305) are both provided with a second electrode (304). The centering sleeve (302) is coaxial with the chuck (103) and is arranged on the side of the second electrode (304) away from the first welding assembly (2).

6. The elongated tube wire winding welding pressure resistance welding device according to claim 5, characterized in that: The second driving assembly includes a second motor (301), a second lead screw (303), and a second nut. The second lead screw (303) is driven to rotate by the second motor (301). The second nut is sleeved on the second lead screw (303) and is fixedly connected to the second slide base.

7. The wire winding and welding pressure resistance welding device for the slender tube according to claim 1, characterized in that: The wire feeding mechanism (5) includes a driving slide (504) and a moving driving assembly. The wire feeding mechanism (5) is arranged on a wire feeding bracket (8). The driving slide (504) is slidably connected to the wire feeding bracket (8) and is driven to move by the moving driving assembly. A wire feeder (509) is arranged on the driving slide (504). An installation seat (508) is arranged at the upper end of the driving slide (504). A pressing wheel cylinder (506), a second steel pipe clamping cylinder (507), a cylinder driving device and the output port of the wire feeder (509) are arranged on the installation seat (508). A pressing wheel (505) is arranged at the end of the cylinder rod of the pressing wheel cylinder (506), and the pressing wheel (505) is located above the output port of the wire feeder (509). The second steel pipe clamping cylinder (507) is driven to move by the cylinder driving device, and a pick-up jaw (5071) that can open and close is arranged at the lower end of the second steel pipe clamping cylinder (507).

8. The pressure resistance welding device for wire winding welding of the slender tube according to claim 7, characterized in that: The moving driving assembly includes a driving motor (501), a driving driving pulley, a driving transmission belt (502), a driving driven pulley, a driving lead screw (503) and a driving nut. The driving motor (501), the driving driven pulley and the driving lead screw (503) are all arranged on the wire feeding bracket (8). The driving driving pulley is installed on the output shaft of the driving motor (501), and the driving driving pulley is connected to the driving driven pulley through the driving transmission belt (502). The driving driven pulley is coaxially fixed to the driving lead screw (503). The driving nut is sleeved on the driving lead screw (503) and is fixedly connected to the driving slide (504).

9. The wire winding and welding pressure resistance welding device for the slender tube according to claim 1, wherein: The auxiliary correction mechanism (4) includes an auxiliary slide (404), an auxiliary driving assembly, a correction clamping cylinder (406), a clamp (405), a first extending cylinder and a second extending cylinder. The auxiliary correction mechanism (4) is arranged on a correction bracket (6). The auxiliary slide (404) is slidably connected to the correction bracket (6) and is driven to move by the auxiliary driving assembly. The correction clamping cylinder (406), the clamp (405), the first extending cylinder and the second extending cylinder are all arranged on the auxiliary slide (404). A correction tooling (4061) that can open and close is arranged on the correction clamping cylinder (406). The correction clamping cylinder (406) is driven to move by the first extending cylinder. The clamp (405) is driven to move by the second extending cylinder.

10. The wire-winding welding pressure resistance welding device for slender tubes according to claim 9, wherein: The auxiliary drive assembly includes an auxiliary drive motor (401), an auxiliary driving pulley, an auxiliary drive belt (402), an auxiliary driven pulley, an auxiliary drive lead screw (403) and an auxiliary drive nut. Among them, the auxiliary drive motor (401), the auxiliary driven pulley and the auxiliary drive lead screw (403) are all arranged on the correction bracket (6). The auxiliary driving pulley is installed on the output shaft of the auxiliary drive motor (401), and the auxiliary driving pulley is connected to the auxiliary driven pulley through the auxiliary drive belt (402). The auxiliary driven pulley is coaxially and fixedly connected to the auxiliary drive lead screw (403). The auxiliary drive nut is sleeved on the auxiliary drive lead screw (403) and fixedly connected to the auxiliary sliding seat (404).

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