An electric power cable metal sheath welding device

Abstract

The application belongs to the technical field of welding equipment, and particularly relates to a power cable metal sheath welding device which comprises a base, the surface of the base is fixed with a feeding conveying frame, conveying rollers are symmetrically and horizontally installed in the feeding conveying frame, a feeding motor is fixed to the outer wall of the feeding conveying frame, a driving shaft is fixed to the conveying roller, the output end of the feeding motor is in transmission connection with the end of the driving shaft, a supporting frame is fixedly connected to the top of the base, a lifting cylinder is fixed to the surface of the supporting frame, a welding mechanism is arranged below the output end of the lifting cylinder, and a welding gun is fixed to the output end of the welding mechanism. The device realizes uniform and stable feeding of the cable sheath, replaces manual pushing mode, effectively reduces the labor intensity of the operator, avoids inevitable problems such as uneven speed, unstable force, position deviation and the like in the manual pushing process, and ensures that the cable sheath moves at a uniform speed along a preset track.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, and specifically relates to a welding device for metal sheaths of power cables. Background Technology

[0002] As a key structure protecting the internal conductors of a cable, the welding quality of the cable sheath directly determines the cable's sealing performance, corrosion resistance, and service life. It is widely used in power transmission, communication engineering, industrial equipment, and many other fields. During cable production, repair, and construction, it is often necessary to butt weld the cable sheath to extend, repair, or seal the cable. Therefore, cable sheath welding equipment has become an indispensable core equipment in the cable processing field.

[0003] Currently, existing cable sheath welding equipment still has many technical defects in practical applications. Specific problems are as follows: In terms of welding automation and feed control, the automation level of existing equipment is low. Most still rely on manual pushing of the cable sheath to complete the feeding operation. This not only greatly increases the labor intensity of operators, but also easily leads to problems such as uneven speed, unstable force, and positional deviation during manual pushing, resulting in poor weld continuity and uniformity, and easily producing defects such as inconsistent weld width, uneven height, and incomplete welding. In terms of welding positioning and clamping, existing equipment mostly adopts rigid clamping structures with low positioning accuracy and lacks effective limiting and guiding mechanisms. During the clamping process, problems such as lifting frame deviation and inaccurate clamping plate alignment are easy to occur.

[0004] To address the aforementioned problems, this application proposes a welding device for the metal sheath of power cables. Summary of the Invention

[0005] This invention provides a welding device for the metal sheath of power cables, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding device for metal sheaths of power cables, comprising a base, a feed conveyor frame fixed to the surface of the base, conveyor rollers rotatably mounted at equal intervals along the horizontal direction inside the feed conveyor frame, a feed motor fixed to the outer wall of the feed conveyor frame, a drive shaft fixed inside the conveyor rollers, the output end of the feed motor being drively connected to the end of the drive shaft, a support frame fixed to the top of the base, a lifting cylinder fixed to the surface of the support frame, a welding mechanism disposed below the output end of the lifting cylinder, a welding gun fixed to the output end of the welding mechanism, and the welding... A distance sensor is fixedly connected to the surface of the welding mechanism. Two sets of compensation cylinders are arranged opposite each other on one side of the support frame. Two sets of clamping plates are arranged symmetrically between the output ends of the two sets of compensation cylinders. A control panel is fixedly connected to the side wall of the support frame. A sponge conveyor belt is arranged between the base and the conveying roller. A filter box is arranged above the welding mechanism. A vacuum cleaner is arranged on one side of the filter box. A dust filter and a purification filter are fixedly arranged in sequence from front to back inside the filter box. A pump body is arranged below the vacuum cleaner. A spray head is arranged below the pump body. The spray head is aimed at the weld area of ​​the welding gun.

[0007] Preferably, a fixed frame is fixed between the support frame and the compensation cylinder, a push plate is fixedly connected to the piston rod end of the compensation cylinder, a compression sleeve is fixedly connected to the surface of the push plate, a pressure-bearing sleeve rod is slidably connected inside the compression sleeve, a first spring is fixed between the compression sleeve and the pressure-bearing sleeve rod, a lifting frame is fixedly connected between the pressure-bearing sleeve rod and the clamping plate, a positioning rail is fixed to one side of the fixed frame, and the lifting frame is slidably connected to the positioning rail.

[0008] Preferably, the clamping plate has a plurality of sets of equidistant sliding rods slidably connected inside, the end of each sliding rod is fixed with a contact roller, and a second spring is sleeved on the surface of each sliding rod, with the two ends of the second spring respectively fixed between the contact roller and the clamping plate.

[0009] Preferably, the feed conveyor frame has two sets of driven rollers rotatably connected inside, and the sponge conveyor belt is wound between the two sets of driven rollers. One set of driven rollers is connected to the corresponding drive shaft by a first chain via a sprocket.

[0010] Preferably, a bracket is fixed to one side surface of the feed conveyor frame, and a drive shaft is rotatably connected inside the bracket. A first bevel gear pair is installed between the drive shaft and a corresponding drive shaft. A cam is fixedly connected to the surface of the drive shaft. A fixed seat is fixed to the inner side wall surface of the feed conveyor frame. A push-pull rod is slidably connected inside the fixed seat. One end of the push-pull rod has a semi-circular structure, and the semi-circular end of the push-pull rod abuts against the outer contour of the cam. A third spring is sleeved on the surface of the push-pull rod. The two ends of the third spring are respectively fixed between the fixed seat and the blocking ring on the surface of the push-pull rod. A connecting frame is fixedly connected to the other end of the push-pull rod. A cleaning brush is fixedly connected to the bottom end of the connecting frame. The cleaning brush is in contact with the surface of the sponge conveyor belt.

[0011] Preferably, the inner sidewalls of the feed conveyor are symmetrically fixedly connected with extrusion seats, and the upper and lower sides of the two sets of extrusion seats are symmetrically slidably connected with sliding blocks. The upper and lower squeezing rollers are rotatably connected between the two sets of sliding blocks, and the upper and lower squeezing rollers are in contact with the upper and lower surfaces of the sponge conveyor belt, respectively. A fourth spring is fixedly connected between the sliding block and the extrusion seat.

[0012] Preferably, guide rails are symmetrically fixed on both sides of the inside of the support frame, and a lifting seat is slidably connected between the two sets of guide rails. The piston rod end of the lifting cylinder is fixedly connected to the top of the lifting seat. The welding mechanism is fixedly installed on the surface of the lifting seat. Collection covers are symmetrically arranged on both sides of the welding gun. The collection covers are fixedly installed on the side wall of the welding mechanism. A dust suction pipe is connected between the filter box and the collection cover. The filter box is fixed on the front surface of the lifting seat. The vacuum cleaner is fixed on the back surface of the lifting seat. A connecting air duct is connected between the vacuum cleaner and the filter box.

[0013] Preferably, a cross-shaped bracket is fixed inside the connecting duct, and a rotating shaft is rotatably connected inside the cross-shaped bracket. The rotating shaft is driven by the drive component of the vacuum cleaner. A driven shaft is rotatably connected to one side of the cross-shaped bracket through a bearing seat. A second bevel gear pair is driven between the driven shaft and the rotating shaft. A reciprocating screw is rotatably connected inside the filter box in front of the dust filter. A second chain is connected between the end of the reciprocating screw and the end of the driven shaft through a sprocket. A cleaning brush is threaded onto the surface of the reciprocating screw, and the cleaning brush contacts the surface of the dust filter.

[0014] Preferably, both the first and second bevel gear pairs consist of two sets of meshing bevel gears. One set of bevel gears in the first bevel gear pair is fixedly connected to the drive shaft, and the other set is fixedly connected to the transmission shaft. One set of bevel gears in the second bevel gear pair is fixedly connected to the rotating shaft, and the other set is fixedly connected to the driven shaft. The pump body and the spray head are respectively fixed on the back surface of the lifting seat. A liquid delivery pipe is connected between the output end of the pump body and the spray head, and a liquid inlet pipe is connected between the input end of the pump body and the external cooling box.

[0015] Preferably, a chip collection box is slidably connected to the bottom of the feed conveyor frame on the side facing the cleaning brush, a liquid collection box is slidably connected to the bottom of the feed conveyor frame on the side facing the lower squeezing roller, a dust collection trough is provided on the bottom of the filter box on the side facing the cleaning brush, a dust collection box is slidably connected to the bottom of the filter box on the side facing the dust collection trough, an electric gate is slidably connected to the top opening of the dust collection box, a handle is fixed to the surface of the chip collection box, the liquid collection box and the dust collection box, a wind speed sensor is fixed inside the connecting air duct, and the control panel is electrically connected to the feed motor, the lifting cylinder, the welding mechanism, the compensation cylinder, the vacuum cleaner, the distance sensor, the electric gate, the wind speed sensor and the pump body respectively.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a scientific and reasonable structure and is safe and convenient to use. 1. The welding process is highly automated, with high precision and efficiency, reducing labor intensity and completely replacing the traditional manual pushing method. This not only effectively reduces the labor intensity of operators but also avoids the problems of uneven speed, unstable force, and positional deviation that are unavoidable in manual pushing. It ensures that the cable sheath always moves at a uniform speed along the preset trajectory, thereby ensuring the continuity and uniformity of the weld and reducing defects such as uneven weld width, uneven height, and incomplete welding caused by unstable feeding from the source.

[0017] 2. Precise and stable positioning, adaptable to various specifications, effectively ensuring the accuracy of welding reference. Through the coordinated design of compensation cylinder, fixed frame, lifting frame, clamping plate and positioning rail, the cable sheath is accurately positioned and stably clamped, fundamentally ensuring the reference accuracy of welding operation and ensuring that the weld area is always directly below the welding gun.

[0018] 3. The fume purification effect is significant, the filter screen is self-cleaning, environmentally friendly and reduces maintenance costs. In response to the large amount of fume and spatter generated during the welding process, the device is equipped with a highly efficient fume purification system, which effectively solves the problem of fume pollution and harm to the health of operators in traditional welding operations.

[0019] 4. The weld cooling is efficient and uniform, avoiding welding defects, improving welding quality and service life. The automatic cooling mechanism of the device can achieve rapid and uniform cooling of the weld, significantly improving welding quality and the service life of the cable sheath. It quickly reduces the weld temperature, accelerates the weld cooling rate, promotes uniform weld crystallization, avoids defects such as oxidation, cracking, and deformation of the weld, and ensures the strength and sealing performance of the welded joint.

[0020] 5. The sponge conveyor belt is self-cleaning, ensuring stable equipment operation and extending equipment service life. The splashes swept down fall into the chip collection box for centralized collection, ensuring that the surface of the sponge conveyor belt is always clean, preventing splashes from clogging the sponge pores, ensuring its water absorption performance and operational stability, and extending the service life of the sponge conveyor belt. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the feed conveyor and support frame in this invention; Figure 3 This is a schematic diagram of the structure of the conveyor roller and the sponge conveyor belt in this invention; Figure 4 This is a cross-sectional view of the feed conveyor frame and the sponge conveyor belt in this invention; Figure 5 This is a schematic diagram of the structure of the sponge conveyor belt and the lower squeezing roller in this invention; Figure 6 This is a schematic diagram of the structure of the sponge conveyor belt and cleaning brush in this invention; Figure 7 In this invention Figure 6 Enlarged view of point A; Figure 8 This is a schematic diagram of the structure of the upper and lower water-squeezing rollers in this invention; Figure 9 This is a schematic diagram of the structure of the fixing frame and clamping plate in this invention; Figure 10 This is a schematic diagram of the lifting seat and welding mechanism in this invention; Figure 11 This is a schematic diagram of the filter box and vacuum cleaner in this invention; Figure 12 This is a cross-sectional view of the lifting seat and filter box in this invention; Figure 13 This is a cross-sectional view of the filter box in this invention.

[0022] In the diagram: 1. Base; 2. Feed conveyor frame; 3. Conveyor roller; 4. Feed motor; 5. Support frame; 6. Lifting cylinder; 7. Lifting seat; 8. Guide rail; 9. Welding mechanism; 10. Welding gun; 11. Fixed frame; 12. Compensating cylinder; 13. Push plate; 14. Extrusion sleeve; 15. Pressure sleeve rod; 16. First spring; 17. Lifting frame; 18. Clamping plate; 19. Clearing slide bar; 20. Contact roller; 21. Second spring; 22. Positioning rail; 23. Sponge conveyor belt; 24. Driven roller; 25. Drive shaft; 26. First chain; 27. First bevel gear pair; 28. Bracket; 29. ​​Transmission shaft; 30. Cam; 31. Fixed seat; 32. Push-pull rod; 33. Third spring; 34. 35. Connecting frame; 36. Cleaning brush; 37. Dust collection box; 38. Squeezing seat; 39. Sliding block; 40. Upper squeezing roller; 41. Lower squeezing roller; 42. Fourth spring; 43. Liquid collection box; 44. Collection cover; 45. Suction pipe; 46. Filter box; 47. Vacuum cleaner; 48. Connecting air duct; 49. Rotating shaft; 50. Driven shaft; 51. Second bevel gear pair; 52. Cross bracket; 53. Second chain; 54. Reciprocating screw; 55. Sweeping brush; 56. Dust filter screen; 57. Purification filter screen; 58. Dust collection box; 59. Distance sensor; 60. Pump body; 61. Liquid inlet pipe; 62. Liquid delivery pipe; 63. Spray head; 64. Control panel; 65. Wind speed sensor; 66. Electric gate. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figures 1-13As shown, the present invention provides a technical solution: a welding device for metal sheaths of power cables, comprising a base 1, a feed conveyor frame 2 fixed on the surface of the base 1, conveyor rollers 3 rotatably mounted at equal intervals in the horizontal direction inside the feed conveyor frame 2, a feed motor 4 fixed on the outer wall of the feed conveyor frame 2, a drive shaft 25 fixed inside the conveyor rollers 3, the output end of the feed motor 4 being drively connected to the end of the drive shaft 25, a support frame 5 fixedly connected to the top of the base 1, a lifting cylinder 6 fixed on the surface of the support frame 5, a welding mechanism 9 arranged below the output end of the lifting cylinder 6, a welding gun 10 fixed on the output end of the welding mechanism 9, a distance sensor 58 fixedly connected to the surface of the welding mechanism 9, two sets of compensation cylinders 12 arranged opposite to each other arranged on one side of the support frame 5, and two sets of... The clamping plates 18 are arranged symmetrically. A control panel 63 is fixedly connected to the side wall of the support frame 5. A sponge conveyor belt 23 is set between the base 1 and the conveyor roller 3. A filter box 45 is set above the welding mechanism 9. A vacuum cleaner 46 is set on one side of the filter box 45. Dust filter screen 55 and purification filter screen 56 are fixed in sequence from front to back inside the filter box 45. A pump body 59 is set below the vacuum cleaner 46. A spray head 62 is set below the pump body 59. The spray head 62 is aimed at the weld area of ​​the welding gun 10. Before the welding operation starts, the operator first places the cable sheath to be welded on the conveyor roller 3 inside the feed conveyor frame 2 to ensure that the weld area of ​​the cable sheath is aligned directly below the welding gun 10 to complete the loading operation. Then, control commands are issued through the control panel 63 fixed to the side wall of the support frame 5.

[0025] like Figures 1-9As shown, a fixed frame 11 is fixed between the support frame 5 and the compensation cylinder 12. A push plate 13 is fixedly connected to the end of the piston rod of the compensation cylinder 12. A compression sleeve 14 is fixedly connected to the surface of the push plate 13. A pressure-bearing sleeve 15 is slidably connected inside the compression sleeve 14. A first spring 16 is fixed between the compression sleeve 14 and the pressure-bearing sleeve 15. A lifting frame 17 is fixedly connected between the pressure-bearing sleeve 15 and the clamping plate 18. A positioning rail 22 is fixed to one side of the fixed frame 11. The lifting frame 17 is slidably connected to the positioning rail 22. When the two sets of compensation cylinders 12 arranged opposite to each other are started, since the compensation cylinder 12 is fixedly connected to the support frame 5 through the fixed frame 11, after the compensation cylinder 12 is started, its piston rod will push the push plate 13 fixed at the end towards the cable sheath. When the push plate 13 moves, it will drive the compression sleeve 14 fixed on its surface to move synchronously. The pressure rod 15 slidably connected inside the compression sleeve 14 moves closer to the cable sheath along with the compression sleeve 14. At this time, the first spring 16 fixed between the compression sleeve 14 and the pressure rod 15 is in a natural state and has no elastic deformation. The end of the pressure rod 15 away from the compression sleeve 14 is fixedly connected to the clamping plate 18 through the lifting frame 17. Therefore, the lifting frame 17 will move synchronously with the pressure rod 15. The lifting frame 17 is slidably connected to the positioning rail 22 fixed on one side of the fixed frame 11. The positioning rail 22 plays a limiting and guiding role in the movement direction of the lifting frame 17, preventing the lifting frame 17 from deviating and ensuring that the clamping plate 18 can be accurately aligned with the cable sheath.

[0026] like Figures 1-9 As shown, the clamping plate 18 has several sets of equidistantly arranged clearance slide rods 19 slidably connected through its interior. Each clearance slide rod 19 has a contact roller 20 fixed at its end. A second spring 21 is sleeved on the surface of each clearance slide rod 19, with both ends of the second spring 21 fixed between the contact roller 20 and the clamping plate 18. When the clamping plate 18 approaches the surface of the cable sheath, the contact rollers 20 at the ends of the several sets of equidistantly arranged clearance slide rods 19 slidably connected through the clamping plate 18 first contact the surface of the cable sheath. As the compensation cylinder 12 continues to push, the cable sheath generates a reverse force on the contact rollers 20, forcing them to... The yielding slide rod 19 slides into the clamping plate 18. At this time, the second spring 21 sleeved on the surface of the yielding slide rod 19 is compressed, generating an elastic restoring force. This restoring force acts on the surface of the cable sheath through the abutment roller 20, realizing flexible clamping of the cable sheath. The setting of several sets of abutment rollers 20 can not only avoid excessive clamping force from damaging the surface of the cable sheath, but also adapt to cable sheaths of different specifications, ensuring the stability of clamping. At the same time, two sets of symmetrically arranged clamping plates 18 clamp the cable sheath simultaneously from both sides, ensuring that the weld area of ​​the cable sheath is always in the center position, laying a precise positioning foundation for subsequent welding operations.

[0027] like Figures 1-4As shown, two sets of driven rollers 24 are rotatably connected inside the feed conveyor frame 2. The sponge conveyor belt 23 is wound between the two sets of driven rollers 24. One set of driven rollers 24 is connected to the corresponding drive shaft 25 by a first chain 26 via a sprocket. After the cable sheath is clamped and positioned, the operator starts the feed motor 4 through the control panel 63. The feed motor 4 is fixed on the outer wall of the feed conveyor frame 2, and its output end is connected to the end of the drive shaft 25 fixed inside the conveyor roller 3. Therefore, after the feed motor 4 is started, it will drive the drive shaft 25 to rotate, which in turn drives the conveyor roller 3 fixedly connected to the drive shaft 25 to rotate in the horizontal direction. When the conveyor roller 3 rotates, friction is generated between its surface and the cable sheath. Under the action of friction, the cable sheath to be welded is driven along the conveyor direction. The feed is uniform, and the feed speed can be adjusted via the control panel 63 to adapt to the welding requirements of different specifications of cable sheaths. At the same time, two sets of driven rollers 24 are rotatably connected inside the feed conveyor frame 2. They are connected to a first chain 26 via a sprocket to one of the drive shafts 25. When the drive shaft 25 rotates, it will drive the driven rollers 24 to rotate synchronously via the first chain 26. The sponge conveyor belt 23 is wound between the two sets of driven rollers 24. Therefore, when the driven rollers 24 rotate, they will drive the sponge conveyor belt 23 to rotate synchronously and uniformly between the base 1 and the conveyor roller 3. The rotation direction of the sponge conveyor belt 23 is consistent with the feed direction of the cable sheath, which prepares for the subsequent adsorption of cooling medium and collection of splashes. The sponge conveyor belt 23 is a conveyor belt with a cloth base, and its tear resistance and fatigue resistance are far superior to those of pure sponge.

[0028] like Figures 1-7As shown, a bracket 28 is fixed to one side surface of the feed conveyor 2. A drive shaft 29 is rotatably connected inside the bracket 28. A first bevel gear pair 27 is installed between the drive shaft 29 and the corresponding drive shaft 25. A cam 30 is fixedly connected to the surface of the drive shaft 29. A fixed seat 31 is fixed to the inner side wall surface of the feed conveyor 2. A push-pull rod 32 is slidably connected inside the fixed seat 31. One end of the push-pull rod 32 has a semi-circular structure, and the semi-circular end of the push-pull rod 32 abuts against the outer contour of the cam 30. A third spring 33 is sleeved on the surface of the push-pull rod 32. The two ends of the third spring 33 are respectively fixed between the fixed seat 31 and the blocking ring on the surface of the push-pull rod 32. A connecting frame 34 is fixedly connected to the other end of the push-pull rod 32. A cleaning brush 35 is fixedly connected to the bottom of the 4, and the cleaning brush 35 contacts the surface of the sponge conveyor belt 23. During the welding process, some larger spatter may not be sucked in by the collection cover 43 and will fall onto the surface of the sponge conveyor belt 23. If it is not cleaned in time, it will affect the water absorption performance and operational stability of the sponge conveyor belt 23. Therefore, the device is equipped with a cleaning mechanism for the sponge conveyor belt 23. A bracket 28 is fixedly fixed to one side surface of the feed conveyor frame 2. A drive shaft 29 is rotatably connected inside the bracket 28. The drive shaft 29 and the corresponding drive shaft 25 are connected by a first bevel gear pair 27. When the drive shaft 25 rotates, it will drive the drive shaft 29 to rotate synchronously through the first bevel gear pair 27. A cam 30 is fixedly connected to the surface of the drive shaft 29, so the cam... Wheel 30 rotates together with drive shaft 29. A fixed seat 31 is fixed to the inner wall surface of feed conveyor 2. A push-pull rod 32 is slidably connected inside the fixed seat 31. One end of the push-pull rod 32 has a semi-circular structure and abuts against the outer contour of cam 30. A third spring 33 is sleeved on the surface of the push-pull rod 32. The two ends of the third spring 33 are respectively fixed between the fixed seat 31 and the blocking rings on the surface of the push-pull rod 32. When cam 30 rotates, the protruding part of its outer contour pushes the push-pull rod 32 to slide away from cam 30. At this time, the third spring 33 is compressed, generating an elastic restoring force. When the protruding part of cam 30 rotates away from the push-pull rod 32, the push-pull rod 32, under the action of the elastic restoring force of the third spring 33, moves closer to cam 30. The direction is reset, and this cycle is repeated to realize the reciprocating linear motion of the push-pull rod 32. The other end of the push-pull rod 32 is fixedly connected to the connecting frame 34, and the bottom end of the connecting frame 34 is fixedly connected to the cleaning brush 35. The cleaning brush 35 is in close contact with the surface of the sponge conveyor belt 23. Therefore, when the push-pull rod 32 reciprocates, it will drive the cleaning brush 35 to reciprocate synchronously, thoroughly cleaning the splashes on the surface of the sponge conveyor belt 23. The cleaned-up splashes will fall into the chip collection box 36 slidably connected to the bottom of the feed conveyor frame 2 on the side opposite to the cleaning brush 35, realizing the centralized collection of splashes and preventing splashes from falling into the equipment or working environment, which is convenient for subsequent cleaning. At the same time, it keeps the sponge conveyor belt 23 clean and ensures its water absorption performance and operational stability.

[0029] like Figures 1-8 As shown, symmetrically fixed extrusion seats 37 are fixedly connected to both sides of the inner wall of the feed conveyor frame 2. Sliding blocks 38 are symmetrically slidably connected to the upper and lower sides of the two sets of extrusion seats 37. An upper squeezing roller 39 and a lower squeezing roller 40 are rotatably connected between the two sets of sliding blocks 38. The upper squeezing roller 39 and the lower squeezing roller 40 are in contact with the upper and lower surfaces of the sponge conveyor belt 23, respectively. A fourth spring 41 is fixedly connected between the sliding block 38 and the extrusion seat 37. The cooling medium sprayed on the weld area will drip down the surface of the cable sheath and fall onto the sponge conveyor belt 23 that is running synchronously below, thereby quickly absorbing the dripping cooling medium and preventing the cooling medium from dripping onto the base 1 or other parts, causing equipment damage or affecting the working environment. In order to realize the recycling of the sponge conveyor belt 23, the device is equipped with a squeezing mechanism. Structuring seats 37 are symmetrically fixed to both sides of the inner wall of the feed conveyor frame 2. Sliding blocks 38 are symmetrically slidably connected to the upper and lower sides of the two sets of extrusion seats 37. Sliding blocks 38 are symmetrically slidably connected on both the upper and lower sides. An upper squeezing roller 39 and a lower squeezing roller 40 are rotatably connected between the two sets of sliding blocks 38. The upper squeezing roller 39 and the lower squeezing roller 40 are in close contact with the upper and lower surfaces of the sponge conveyor belt 23, respectively. A fourth spring 41 is fixedly connected between the sliding blocks 38 and the squeezing seat 37. When the sponge conveyor belt 23 moves to the squeezing mechanism, the upper squeezing roller 39 and the lower squeezing roller 40 apply uniform squeezing force to the sponge conveyor belt 23 under the elastic force of the fourth spring 41, squeezing out the cooling medium adsorbed inside the sponge conveyor belt 23. The squeezed-out cooling medium drips into the liquid collection box 42 slidably connected to the bottom of the feed conveyor frame 2 on the side opposite to the lower squeezing roller 40, realizing the recovery of the cooling medium, which can be reused and saves resources. After being squeezed dry, the sponge conveyor belt 23 continues to run, returning to the bottom of the conveyor roller 3, and continues to adsorb the cooling medium, forming a cycle.

[0030] like Figures 1-10As shown, guide rails 8 are symmetrically fixed on both sides of the inside of the support frame 5. A lifting seat 7 is slidably connected between the two sets of guide rails 8. The piston rod end of the lifting cylinder 6 is fixedly connected to the top of the lifting seat 7. The welding mechanism 9 is fixedly installed on the surface of the lifting seat 7. Collection covers 43 are symmetrically arranged on both sides of the welding gun 10. The collection covers 43 are fixedly installed on the side wall of the welding mechanism 9. A suction pipe 44 connects the filter box 45 and the collection cover 43. The filter box 45 is fixed on the front surface of the lifting seat 7. The vacuum cleaner 46 is fixed on the back surface of the lifting seat 7. A connecting air duct 4 connects the vacuum cleaner 46 and the filter box 45. 7. After the cable sheath begins to feed, the operator sets the welding parameters through the control panel 63, and then presses the start button. The control panel 63 issues a command to start the lifting cylinder 6 fixed on the surface of the support frame 5. The piston rod end of the lifting cylinder 6 is fixedly connected to the top of the lifting seat 7, while the lifting seat 7 is slidably connected between the guide rails 8 symmetrically fixed on both sides inside the support frame 5. Therefore, after the lifting cylinder 6 starts, its piston rod will push the lifting seat 7 to move downward at a constant speed along the guide rail 8, causing the welding mechanism 9 fixed on the surface of the lifting seat 7 to move downward synchronously. The welding gun 10 fixed at the output end of the welding mechanism 9 also moves downward accordingly, approaching... In the weld area of ​​the cable sheath, a distance sensor 58 is fixedly connected to the surface of the welding mechanism 9. The detection direction of the distance sensor 58 is aligned with the weld area of ​​the cable sheath, and it detects the distance between the welding gun 10 and the weld in real time. The detected distance data is transmitted to the control panel 63 in real time. When the detected distance reaches the welding distance preset by the control panel 63, the distance sensor 58 sends a signal to the control panel 63. The control panel 63 immediately controls the lifting cylinder 6 to stop moving, and the lifting seat 7 and the welding mechanism 9 remain stationary, ensuring that the distance between the welding gun 10 and the weld is always within the optimal welding range, ensuring the weld... After the welding gun 10 is positioned, the control panel 63 controls the welding mechanism 9 to start. The welding gun 10 generates an electric arc and performs continuous arc welding on the weld area of ​​the cable sheath, which is fed at a constant speed, to achieve seamless connection of the cable sheath. During the welding process, the cable sheath is fed at a constant speed, and the welding gun 10 remains in a fixed position to ensure the continuity and uniformity of the weld. At the same time, the control panel 63 receives the detection data from the distance sensor 58 in real time. If the cable sheath shifts or the position of the welding gun 10 changes slightly during the welding process, the control panel 63 will promptly control the lifting cylinder 6 to make fine adjustments to ensure welding accuracy.

[0031] like Figures 10-13As shown, a cross-shaped bracket 51 is fixed inside the connecting duct 47. A rotating shaft 48 is rotatably connected inside the cross-shaped bracket 51. The rotating shaft 48 is connected to the drive component of the vacuum cleaner 46. A driven shaft 49 is rotatably connected to one side of the cross-shaped bracket 51 through a bearing seat. A second bevel gear pair 50 is connected between the driven shaft 49 and the rotating shaft 48. A reciprocating screw 53 is rotatably connected inside the filter box 45 in front of the dust filter screen 55. A second chain 52 is connected between the end of the reciprocating screw 53 and the end of the driven shaft 49 through a sprocket. A cleaning brush 54 is threaded onto the surface of the reciprocating screw 53. The cleaning brush 54 contacts the surface of the dust filter screen 55. During welding operations, the arc generated by the welding gun 10 produces a large amount of welding fumes and spatter. If not handled in time, it will pollute the environment and affect the welding quality. Therefore, the control panel 63 synchronously starts the vacuum cleaner 4. 6. The vacuum cleaner 46 is fixed to the back surface of the lifting base 7 and is connected to the filter box 45 through the connecting air duct 47. The filter box 45 is fixed to the front surface of the lifting base 7 and is connected to the collection covers 43 symmetrically arranged on both sides of the welding gun 10 through the suction pipe 44. After the vacuum cleaner 46 is started, it will generate negative pressure, which will suck in the fumes and spatter generated during the welding process through the collection cover 43 and transport them to the inside of the filter box 45 through the suction pipe 44. Inside the filter box 45, from front to back, there are dust filter screen 55 and purification filter screen 56. The fumes and spatter first pass through the dust filter screen 55, which intercepts the larger spatter and coarse dust particles. The remaining fine fumes are further filtered by the purification filter screen 56. The purified clean air is drawn out by the vacuum cleaner 46 through the connecting air duct 47, realizing the efficient purification of welding fumes and avoiding environmental pollution.

[0032] To prevent the dust filter 55 from being clogged by flying debris and affecting the dust purification effect, the device is equipped with a self-cleaning filter structure. A cross bracket 51 is fixed inside the connecting air duct 47. The rotating shaft 48 inside the cross bracket 51 is rotatably connected to the drive component of the vacuum cleaner 46. When the vacuum cleaner 46 is started, it will drive the rotating shaft 48 to rotate synchronously. A driven shaft 49 is rotatably connected to one side of the cross bracket 51 through a bearing seat. The rotating shaft 48 and the driven shaft 49 are connected by a second bevel gear pair 50. Therefore, when the rotating shaft 48 rotates, it will drive the driven shaft 49 to rotate through the second bevel gear pair 50.

[0033] Inside the filter box 45, a reciprocating screw 53 is rotatably connected to the front side of the dust filter screen 55. The reciprocating screw 53 and the driven shaft 49 are connected by a second chain 52 via a sprocket. When the driven shaft 49 rotates, it drives the reciprocating screw 53 to rotate synchronously via the second chain 52. A cleaning brush 54 is threadedly connected to the surface of the reciprocating screw 53. The cleaning brush 54 is in close contact with the surface of the dust filter screen 55. When the reciprocating screw 53 rotates, it drives the cleaning brush 54 to move back and forth along the length of the reciprocating screw 53, cleaning the splashes and coarse dust particles intercepted on the surface of the dust filter screen 55. A dust collection trough is opened on the bottom of the filter box 45, facing the cleaning brush 54. The splashes and dust that are cleaned down fall into the dust collection box 57 that is slidably connected to the bottom of the filter box 45 through the dust collection trough, realizing the collection of dust waste, while ensuring the unobstructed flow of the dust filter screen 55, and ensuring the continuous and stable dust purification effect.

[0034] like Figure 7 , Figure 11 and Figure 13 As shown, both the first bevel gear pair 27 and the second bevel gear pair 50 consist of two sets of meshing bevel gears. One set of bevel gears in the first bevel gear pair 27 is fixedly connected to the drive shaft 25, and the other set is fixedly connected to the transmission shaft 29. One set of bevel gears in the second bevel gear pair 50 is fixedly connected to the rotating shaft 48, and the other set is fixedly connected to the driven shaft 49. The pump body 59 and the spray head 62 are respectively fixed to the back surface of the lifting seat 7. A liquid inlet pipe 61 connects the output end of the pump body 59 and the spray head 62, and a liquid inlet pipe 60 connects the input end of the pump body 59 and the external cooling box. During the welding process, the temperature in the weld area is extremely high. If it is cooled naturally, it will lead to coarse and uneven crystallization of the weld. Defects such as unevenness, oxidation, cracking, and deformation affect welding strength and sealing performance. Therefore, the device is equipped with an automatic cooling mechanism. A pump body 59 and a spray head 62 are fixed on the back surface of the lifting seat 7. When the lifting seat 7 moves down, it will drive the pump body 59 and the spray head 62 to move down synchronously, ensuring that the spray head 62 is always aligned with the weld area of ​​the welding gun 10. After the welding operation is started, the control panel 63 starts the pump body 59 synchronously. The input end of the pump body 59 is connected to the external cooling box through the liquid inlet pipe 60, and the output end is connected to the spray head 62 through the liquid delivery pipe 61. After the pump body 59 is started, the cooling medium (such as water-based coolant) in the external cooling box (not shown in the figure) is drawn in through the liquid inlet pipe 60 and delivered to the spray head 62 through the liquid delivery pipe 61. The spray head 62 atomizes the cooling medium and sprays it evenly on the weld area that has just been welded, which quickly reduces the weld temperature, accelerates the weld cooling speed, avoids defects such as deformation and cracks in the weld, and ensures the welding quality.

[0035] like Figure 8 , Figure 12 and Figure 13As shown, a chip collection box 36 is slidably connected to the bottom of the feed conveyor 2 on the side facing the cleaning brush 35, and a liquid collection box 42 is slidably connected to the bottom of the feed conveyor 2 on the side facing the lower squeezing roller 40. A dust collection trough is opened on the bottom of the filter box 45 on the side facing the cleaning brush 54, and a dust collection box 57 is slidably connected to the bottom of the filter box 45 on the side facing the dust collection trough. An electric gate 65 is slidably connected to the top opening of the dust collection box 57. Handles are fixed on the surfaces of the chip collection box 36, the liquid collection box 42, and the dust collection box 57. A wind speed sensor 64 is fixed inside the connecting air duct 47. The control panel 63 is electrically connected to the feed motor 4, the lifting cylinder 6, the welding mechanism 9, the compensation cylinder 12, the vacuum cleaner 46, the distance sensor 58, the electric gate 65, the wind speed sensor 64, and the pump body 59.

[0036] The control panel 63 includes a display screen, operation buttons, a control module, and a storage module. The display screen is a touch-screen LCD. The operation buttons include a start button, a stop button, an emergency stop button, a parameter setting button, and an adjustment button. The control module is a PLC controller, which is electrically connected to the lifting cylinder 6, the welding mechanism 9, the feed motor 4, the distance sensor 58, the pump body 59, and the vacuum cleaner 46. After the cable sheath welding is completed, the operator presses the stop button on the control panel 63. The control panel 63 immediately issues a command to stop the welding mechanism 9, the feed motor 4, the lifting cylinder 6, the vacuum cleaner 46, the pump body 59, and the compensation cylinder 12. The piston rod of the compensation cylinder 12 retracts, causing the push plate 13, the extrusion sleeve 14, the pressure sleeve 15, the lifting frame 17, and the clamping plate 18 to move away from the cable sheath, releasing the clamp on the cable sheath. The second spring 21 is tightened and reset, causing the sliding rod 19 and the roller 20 to return to their initial positions. The piston rod of the lifting cylinder 6 retracts, causing the lifting seat 7, welding mechanism 9, welding gun 10, filter box 45, vacuum cleaner 46, pump body 59 and spray head 62 to move upward along the guide rail 8 and return to their initial positions. Then, the operator takes out the welded cable sheath, checks the welding quality, and collects the welded product. Finally, the operator pulls out the chip collection box 36 and liquid collection box 42 at the bottom of the feed conveyor 2 and the dust collection box 57 at the bottom of the filter box 45 to clean the collected splashes, cooling medium and dust. After cleaning, the chip collection box 36, liquid collection box 42 and dust collection box 57 are reinstalled in their original positions. At the same time, the operating status of each component is checked to ensure that there are no abnormalities. Thus, a complete cable sheath welding operation is completed.

[0037] It is worth noting that the wind speed sensor 64 is used to collect the negative pressure wind speed signal of the airflow in the filter box 45 in real time, so as to realize the online real-time monitoring, intelligent judgment and linkage control of the filter screen blockage status. Under normal dust collection conditions, the dust filter screen 55 and the purification filter screen 56 are unobstructed, the airflow velocity in the connecting duct 47 is stable and the wind speed is maintained within the preset threshold range. When the dust filter screen 55 is blocked by splashes and dust particles, the cross-sectional area of ​​the airflow is reduced and the negative pressure wind speed in the duct drops significantly. The wind speed sensor 64 collects the airflow wind speed data in real time, converts the analog signal into an electrical signal and transmits it to the control panel 63 to accurately identify the degree of filter screen blockage.

[0038] The vacuum cleaner 46 uses a dual-speed vacuum motor. The vacuuming mode is high-speed forward rotation, and the cleaning mode is low-speed reverse rotation. The bevel gear connected to the rotating shaft 48 is a one-way gear. When vacuuming at high speed, the one-way gear rotates without driving the driven shaft 49, and the cleaning mechanism does not move, so as to avoid the cleaning brush 54 interfering with the normal dust adsorption. When the wind speed sensor 64 detects that the wind speed in the air duct is lower than the preset critical threshold, it determines that the filter is blocked and sends a trigger signal to the control panel 63 to control the dual-speed vacuum motor to stop at high speed forward rotation and switch to low-speed reverse rotation. This provides reverse cleaning power for the reciprocating screw 53 and the cleaning brush 54, realizing closed-loop intelligent control from blockage to automatic cleaning.

[0039] The electric gate 65, driven by the control panel 63, is a negative pressure isolation type actuator. It is used to block or guide the negative pressure connection between the filter box 45 and the dust collection box 57, solving the problem of secondary dust re-suction from the dust collection box 57 during cleaning operations. During normal vacuuming operation and when the vacuum cleaner 46 is rotating at high speed, the control panel 63 controls the electric gate 65 to close, completely sealing the top opening of the dust collection box 57. This creates an independent negative pressure adsorption chamber inside the filter box 45, where the negative pressure acts only on the dust filter screen 55 side, efficiently adsorbing welding fumes and splashes while simultaneously blocking the dust collection box. The airflow between the dust collection box 57 and the filter box 45 is connected to prevent the waste and dust collected in the dust collection box 57 from flowing back into the filter box 45 under negative pressure, ensuring the one-way collection effect of smoke and dust purification. When the wind speed sensor 64 triggers the cleaning mode, the vacuum cleaner 46 reverses at low speed and the cleaning brush 54 sweeps the dust filter 55 back and forth. At the same time, the control panel 63 controls the electric gate 65 to open, and guides the splashes and dust particles scraped off by the cleaning brush 54 through the dust falling channel between the filter box 45 and the dust collection box 57. Under the action of gravity and low-speed reverse airflow, the dust falls smoothly into the dust collection box 57 for centralized collection.

[0040] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding device for metal sheath of power cables, comprising a base (1), characterized in that: A feed conveyor frame (2) is fixed to the surface of the base (1). Conveyor rollers (3) are equidistantly mounted inside the feed conveyor frame (2) in a horizontal direction. A feed motor (4) is fixed to the outer wall of the feed conveyor frame (2). A drive shaft (25) is fixed inside the conveyor rollers (3). The output end of the feed motor (4) is connected to the end of the drive shaft (25). A support frame (5) is fixed to the top of the base (1). A lifting cylinder (6) is fixed to the surface of the support frame (5). A welding mechanism (9) is located below the output end of the lifting cylinder (6). A welding gun (10) is fixed to the output end of the welding mechanism (9). A distance sensor (58) is fixed to the surface of the welding mechanism (9). A welding gun (10) is fixed to the output end of the welding mechanism (9). A distance sensor (58) is fixed to the surface of the welding mechanism (9). A distance sensor (58) is located on one side of the support frame (5). There are two sets of compensation cylinders (12) arranged opposite to each other. Two sets of clamping plates (18) are arranged symmetrically between the output ends of the two sets of compensation cylinders (12). A control panel (63) is fixedly connected to the side wall of the support frame (5). A sponge conveyor belt (23) is arranged between the base (1) and the conveying roller (3). A filter box (45) is arranged above the welding mechanism (9). A vacuum cleaner (46) is arranged on one side of the filter box (45). A dust filter screen (55) and a purification filter screen (56) are fixed inside the filter box (45) from front to back. A pump body (59) is arranged below the vacuum cleaner (46). A spray head (62) is arranged below the pump body (59). The spray head (62) is aligned with the weld area of ​​the welding gun (10).

2. The welding device for metal sheath of power cables according to claim 1, characterized in that: A fixed frame (11) is fixed between the support frame (5) and the compensation cylinder (12). A push plate (13) is fixedly connected to the piston rod end of the compensation cylinder (12). A compression sleeve (14) is fixedly connected to the surface of the push plate (13). A pressure-bearing sleeve rod (15) is slidably connected inside the compression sleeve (14). A first spring (16) is fixed between the compression sleeve (14) and the pressure-bearing sleeve rod (15). A lifting frame (17) is fixedly connected between the pressure-bearing sleeve rod (15) and the clamping plate (18). A positioning rail (22) is fixed on one side of the fixed frame (11). The lifting frame (17) is slidably connected to the positioning rail (22).

3. The welding device for metal sheath of power cables according to claim 1, characterized in that: The clamping plate (18) has several sets of equidistant sliding rods (19) that slide through it. The end of each sliding rod (19) is fixed with a contact roller (20). The surface of each sliding rod (19) is fitted with a second spring (21), and the two ends of the second spring (21) are fixed between the contact roller (20) and the clamping plate (18).

4. The welding device for metal sheath of power cables according to claim 1, characterized in that: The feed conveyor frame (2) has two sets of driven rollers (24) rotatably connected inside. The sponge conveyor belt (23) is wound between the two sets of driven rollers (24). One set of driven rollers (24) is connected to the corresponding drive shaft (25) by a first chain (26) through a sprocket.

5. The welding device for metal sheath of power cables according to claim 1, characterized in that: A bracket (28) is fixed to one side surface of the feed conveyor (2). A drive shaft (29) is rotatably connected inside the bracket (28). A first bevel gear pair (27) is installed between the drive shaft (29) and the corresponding drive shaft (25). A cam (30) is fixedly connected to the surface of the drive shaft (29). A fixed seat (31) is fixed to the inner side wall surface of the feed conveyor (2). A push-pull rod (32) is slidably connected inside the fixed seat (31). One end of the push-pull rod (32) is semi-circular. The push-pull rod (32) has a semi-circular end that abuts against the outer contour of the cam (30). A third spring (33) is sleeved on the surface of the push-pull rod (32). The two ends of the third spring (33) are respectively fixed between the fixed seat (31) and the blocking ring on the surface of the push-pull rod (32). A connecting frame (34) is fixedly connected to the other end of the push-pull rod (32). A cleaning brush (35) is fixedly connected to the bottom end of the connecting frame (34). The cleaning brush (35) is in contact with the surface of the sponge conveyor belt (23).

6. The welding device for metal sheath of power cables according to claim 1, characterized in that: The inner sidewalls of the feed conveyor (2) are symmetrically fixedly connected with extrusion seats (37). The upper and lower sides of the two sets of extrusion seats (37) are symmetrically slidably connected with sliding blocks (38). The upper squeezing roller (39) and the lower squeezing roller (40) are rotatably connected between the two sets of sliding blocks (38). The upper squeezing roller (39) and the lower squeezing roller (40) are in contact with the upper and lower surfaces of the sponge conveyor belt (23). A fourth spring (41) is fixedly connected between the sliding block (38) and the extrusion seat (37).

7. The welding device for metal sheath of power cables according to claim 5, characterized in that: The support frame (5) has guide rails (8) fixed symmetrically on both sides inside. A lifting seat (7) is slidably connected between the two sets of guide rails (8). The piston rod end of the lifting cylinder (6) is fixedly connected to the top of the lifting seat (7). The welding mechanism (9) is fixedly installed on the surface of the lifting seat (7). A collection cover (43) is symmetrically arranged on both sides of the welding gun (10). The collection cover (43) is fixedly installed on the side wall of the welding mechanism (9). A suction pipe (44) is connected between the filter box (45) and the collection cover (43). The filter box (45) is fixed on the front surface of the lifting seat (7). The vacuum cleaner (46) is fixed on the back surface of the lifting seat (7). A connecting air pipe (47) is connected between the vacuum cleaner (46) and the filter box (45).

8. The welding device for metal sheath of power cables according to claim 7, characterized in that: A cross bracket (51) is fixed inside the connecting duct (47). A rotating shaft (48) is rotatably connected inside the cross bracket (51). The rotating shaft (48) is connected to the drive component of the vacuum cleaner (46). A driven shaft (49) is rotatably connected to one side of the cross bracket (51) through a bearing seat. A second bevel gear pair (50) is connected between the driven shaft (49) and the rotating shaft (48). A reciprocating screw (53) is rotatably connected inside the filter box (45) in front of the dust filter screen (55). A second chain (52) is connected between the end of the reciprocating screw (53) and the end of the driven shaft (49) through a sprocket. A cleaning brush (54) is threaded onto the surface of the reciprocating screw (53). The cleaning brush (54) is in contact with the surface of the dust filter screen (55).

9. The welding device for metal sheath of power cables according to claim 8, characterized in that: The first bevel gear pair (27) and the second bevel gear pair (50) are both composed of two sets of meshing bevel gears. One set of bevel gears of the first bevel gear pair (27) is fixedly connected to the drive shaft (25), and the other set of bevel gears is fixedly connected to the transmission shaft (29). One set of bevel gears of the second bevel gear pair (50) is fixedly connected to the rotating shaft (48), and the other set of bevel gears is fixedly connected to the driven shaft (49). The pump body (59) and the spray head (62) are respectively fixed on the back surface of the lifting seat (7). A liquid inlet pipe (61) is connected between the output end of the pump body (59) and the spray head (62). A liquid inlet pipe (60) is connected between the input end of the pump body (59) and the external cooling box.

10. The welding device for metal sheath of power cables according to claim 7, characterized in that: A chip collection box (36) is slidably connected to the bottom of the feed conveyor (2) on the side facing the cleaning brush (35), and a liquid collection box (42) is slidably connected to the bottom of the feed conveyor (2) on the side facing the lower squeezing roller (40). A dust collection trough is provided on the bottom of the filter box (45) on the side facing the sweeping brush (54), and a dust collection box (57) is slidably connected to the bottom of the filter box (45) on the side facing the dust collection trough. An electric motor is slidably connected to the top opening of the dust collection box (57). The gate (65), the chip collection box (36), the liquid collection box (42) and the dust collection box (57) are all fixed with handles. The wind speed sensor (64) is fixed inside the connecting air duct (47). The control panel (63) is electrically connected to the feed motor (4), the lifting cylinder (6), the welding mechanism (9), the compensation cylinder (12), the vacuum cleaner (46), the distance sensor (58), the electric gate (65), the wind speed sensor (64) and the pump body (59).

Images