A forward double-extrusion machine for manufacturing a double-composite aluminum tube welding machine

Abstract

The present invention discloses a double composite aluminum tube welding machine for a forward double extrusion machine, which relates to the technical field of aluminum tube welding. The present invention includes a workbench and two fixed rings. Clamping plates are arranged inside both fixed rings. A moving frame is arranged on the workbench, and a grinding rod is arranged on the workbench. The driving mechanism includes a worm, a first gear is arranged on the worm, a toothed ring is arranged on each fixed ring, the toothed ring meshes with the first gear, a reciprocating spiral groove is formed on the worm, and a lifting mechanism is arranged at the bottom of the grinding rod. The first gear drives the toothed ring and the aluminum tube to rotate rapidly, so as to facilitate the grinding and removal of the oxide film at the end of the aluminum tube. The worm rotates to drive the moving frame to move, so as to clamp the aluminum tube, which is convenient for the grinding and welding of the aluminum tube. The up and down movement of the grinding rod can clean the welded seam after the end of the aluminum tube is ground, preventing the welding slag and flux from corroding the welded seam.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum pipe welding, and specifically relates to a double composite aluminum pipe welding machine manufactured by a forward double extrusion machine.

[0002] Background Art

[0003] The production of composite aluminum pipes mainly uses extrusion machines for extrusion forming. Horizontal aluminum extrusion equipment can be mainly divided into forward extrusion and backward extrusion according to the extrusion method; it can also be divided into two different structures: single-action profile extrusion machines and double-action profile extrusion machines. The forward double extrusion machine is a double-action profile extrusion machine with a forward extrusion method. This extrusion machine has high production efficiency and seamless products, and the products can meet the requirements of most manufacturing fields with low requirements for the performance of profiles.

[0004] Composite aluminum pipes and aluminum alloy pipes have the advantages of high compressive strength, good temperature resistance, safety, non-toxicity, stable dimensions, and small expansion coefficients, and are widely used in the fields of construction, industry, automobiles, etc.

[0005] When aluminum profiles come into contact with air, a dense oxide film is easily formed on the surface. Before welding the ends of composite aluminum pipes, this oxide film needs to be removed, otherwise it is easy to cause false welding or welding failure. The existing composite aluminum pipes usually need to be manually cleaned of the oxide film at the ends before welding. However, if welding cannot be carried out in time after manual cleaning, the oxide film will be generated again, affecting the welding quality and wasting labor. Summary of the Invention

[0006] The purpose of the present invention is to provide a double composite aluminum pipe welding machine manufactured by a forward double extrusion machine to solve the above deficiencies in the prior art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A double composite aluminum pipe welding machine manufactured by a forward double extrusion machine, including a workbench, on which two fixed rings are rotatably arranged. Three clamping plates for clamping aluminum pipes are slidably arranged in each of the two fixed rings. Two moving frames are slidably arranged on the workbench, and a grinding rod for grinding the ends of aluminum pipes is rotatably arranged on the workbench; a driving mechanism, including a worm rotatably arranged on the workbench, two first gears are fixedly arranged on the worm, a toothed ring is fixedly arranged on each of the fixed rings, and each toothed ring is meshed with each first gear in a one-to-one correspondence. Two reciprocating spiral grooves for cooperating with the moving frames are opened on the worm. A lifting mechanism is arranged at the bottom of the grinding rod. When the worm squeezes the clamping plates through the moving frames to clamp the aluminum pipes, it drives the aluminum pipes to rotate to grind the oxide film, and the grinding rod is used to clean the weld seam after welding through the lifting mechanism.

[0008] Preferably, each of the clamping plates includes a first arc plate, an inclined portion, and a second arc plate. Moving rings are fixedly arranged on both of the moving frames. Rolling rings are rotatably arranged in each of the moving rings, and a plurality of ball bearings are movably arranged in each of the rolling rings.

[0009] Preferably, the lifting mechanism includes a worm gear that cooperates with the worm. A friction wheel is slidably arranged on the worm gear, and a friction ring is slidably arranged on one of the toothed rings.

[0010] Preferably, a screw rod is rotatably arranged on the worm gear. The screw rod is threadedly connected to the friction wheel, and a limiting rod is fixedly arranged on the worm gear.

[0011] Preferably, a fixed column is fixedly arranged on the workbench. A lifting sleeve is slidably arranged on the fixed column. The lifting sleeve is slidably arranged in the worm gear. A return pull rod is fixedly arranged at the top of the lifting sleeve. The grinding rod is slidably connected to the return pull rod. A third spring is fixedly arranged between the lifting sleeve and the grinding rod.

[0012] Preferably, an arc-shaped groove and a V-shaped groove that communicate with each other are formed in the lifting sleeve.

[0013] Preferably, a cleaning wipe is fixedly arranged at the top of the grinding rod.

[0014] Preferably, two support frames are slidably arranged on the workbench. Each of the support frames is rotatably connected to each of the fixed rings. A second gear is rotatably arranged on each of the support frames. Each of the second gears is meshed with one of the toothed rings in a one-to-one correspondence. A connecting rod is fixedly arranged on each of the second gears. A friction plate is fixedly arranged at one end of each of the connecting rods away from the second gear.

[0015] Preferably, a first spring is fixedly arranged between each of the moving rings and each of the fixed rings in a one-to-one correspondence. Two limiting mechanisms are arranged on the workbench.

[0016] Preferably, each of the limiting mechanisms includes two fixing plates fixedly arranged on the workbench. A limiting plate is slidably arranged on each of the fixing plates. A first clamping plate and a second clamping plate are fixedly arranged on each of the limiting plates.

[0017] In the above technical solution, the present invention provides a forward double-extrusion machine for manufacturing a double-composite aluminum tube welding machine, which has the following beneficial effects: 1. The oxide film at the end of the aluminum tube can be conveniently ground and removed by driving the toothed ring and the aluminum tube to rotate rapidly through the first gear; 2. The aluminum tube can be clamped by driving the moving frame to move through the rotation of the worm, which is convenient for grinding and welding the aluminum tube; 3. After the end of the aluminum tube is ground, the welded seam can be cleaned by the up-and-down movement of the grinding rod, preventing the welding slag and flux from corroding the welded seam. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the whole provided by the embodiment of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the fixing plate provided by the embodiment of the present invention;

[0021] Figure 3 It is a schematic structural diagram of the worm provided by the embodiment of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the moving frame provided by the embodiment of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the first gear provided by the embodiment of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the lifting sleeve provided by the embodiment of the present invention;

[0025] Figure 7 It is a schematic structural diagram of the grinding rod provided by the embodiment of the present invention;

[0026] Figure 8 provided by the embodiment of the present invention Figure 1 The enlarged view at position A in;

[0027] Figure 9 provided by the embodiment of the present invention Figure 2 The enlarged view at position B in;

[0028] Figure 10 provided by the embodiment of the present invention Figure 3 The enlarged view at position C in;

[0029] Figure 11 It is a schematic structural diagram of the cleaning wipe provided by the embodiment of the present invention.

[0030] Explanation of reference numerals:

[0031] 1. Workbench; 2. Aluminum tube; 3. Servo motor; 4. Welding manipulator; 5. Worm; 10. First gear; 11. Tooth ring; 12. Support frame; 13. Fixed ring; 14. Slide bar; 15. Clamping plate; 151. First arc plate; 152. Tilted part; 153. Second arc plate; 21. Reciprocating spiral groove; 22. Moving frame; 23. Moving ring; 24. Contact ball; 25. Rolling ring; 26. Ball; 27. First spring; 28. Friction ring; 29. Second spring; 31. Second gear; 32. Connecting rod; 33. Friction plate; 41. Worm gear; 42. Friction wheel; 43. Screw; 44. Limit rod; 45. Fixed column; 51. Lifting sleeve; 511. Arc groove; 512. V-shaped groove; 52. Grinding rod; 53. Cleaning wipe; 54. Pull-back rod; 55. Third spring; 61. Fixed plate; 62. Limit plate; 63. First clamping plate; 64. Second clamping plate; 65. Fourth spring. Detailed implementation mode

[0032] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.

[0033] Please refer to Figure 1-11, A forward double extrusion machine for manufacturing a double composite aluminum tube welding machine, including a workbench 1, on which two fixed rings 13 are rotatably arranged. Inside each of the two fixed rings 13, three clamping plates 15 for clamping the aluminum tube 2 are slidably arranged. On the workbench 1, two moving frames 22 are slidably arranged. On the workbench 1, a grinding rod 52 for grinding the end of the aluminum tube 2 is rotatably arranged; a driving mechanism, including a worm 5 rotatably arranged on the workbench 1. Two first gears 10 are fixedly arranged on the worm 5. Tooth rings 11 are fixedly arranged on each of the fixed rings 13. Each tooth ring 11 is meshed with each first gear 10 in a one-to-one correspondence. Two reciprocating spiral grooves 21 cooperating with the moving frames 22 are formed on the worm 5. A lifting mechanism is arranged at the bottom of the grinding rod 52. When the worm 5 squeezes the clamping plates 15 through the moving frames 22 to clamp the aluminum tube 2, it drives the aluminum tube 2 to rotate to grind the oxide film, and the grinding rod 52 is used to clean the weld seam after welding through the lifting mechanism;A slide bar 14 is fixedly arranged on each clamping plate 15. Each slide bar 14 is slidably connected to the corresponding fixed ring 13. A welding manipulator 4 for welding two aluminum tubes 2 is arranged on the workbench 1. The two fixed rings 13 are symmetrically arranged on the workbench 1. Six clamping plates 15 are evenly distributed in the two fixed rings 13. The grinding rod 52 is located in the middle position between the two fixed rings 13. The two moving frames 22 are symmetrically arranged on both sides of the worm 5. A contact ball 24 is fixedly arranged in each moving frame 22. When the worm 5 rotates, the moving frame 22 can reciprocate on the worm 5 through the cooperation between the contact ball 24 and the corresponding reciprocating spiral groove 21 on the worm 5. When the worm 5 rotates, the two first gears 10 rotate accordingly. When the first gear 10 rotates, it drives the corresponding toothed ring 11 to rotate, thereby driving the corresponding fixed ring 13 to rotate. In the initial state, the grinding rod 52 is located between the two fixed rings 13. The aluminum tubes 2 are respectively inserted into the fixed rings 13 from one end of the clamping plate 15 away from the grinding rod 52. The worm 5 is rotated, and the end of the aluminum tube 2 is closely abutted against the grinding rod 52. When the worm 5 rotates, while driving the fixed ring 13 to rotate through the cooperation between the first gear 10 and the toothed ring 11, it also drives the moving frame 22 to move towards the direction close to the fixed ring 13. When the moving frame 22 moves, it squeezes each clamping plate 15 so that the clamping plate 15 clamps and fixes the aluminum tube 2. At this time, the rotation of the fixed ring 13 drives the aluminum tube 2 to rotate through the clamping plate 15, so that the end of the aluminum tube 2 in contact with the grinding rod 52 is ground, thereby cleaning the oxide film at the end of the aluminum tube 2. When the grinding of the aluminum tube 2 is completed, as the worm 5 rotates, the grinding rod 52 gradually moves downward. When the moving frame 22 moves a certain distance, the grinding rod 52 separates from the ends of the two aluminum tubes 2. The moving frame 22 pushes the fixed ring 13 towards the direction close to the grinding rod 52. At this time, the first gear 10 is separated from the corresponding toothed ring 11, and the two aluminum tubes 2 quickly abut against each other. At this time, the two aluminum tubes 2 are slowly rotated by the worm 5, and the welding manipulator 4 is started to weld the abutting part of the two aluminum tubes 2, so that the aluminum tubes 2 can be welded in time. When the welding of the two aluminum tubes 2 is completed, the moving frame 22 moves away from the fixed ring 13. As the worm 5 rotates, the top of the grinding rod 52 moves upward to abut against the weld between the two aluminum tubes 2. As the two aluminum tubes 2 rotate, the top of the grinding rod 52 cleans the welding slag and flux around the weld, preventing the welding slag and flux from corroding the weld and its surface. During the process of the moving frame 22 moving away from the fixed ring 13, the clamping plate 15 loosens the aluminum tube 2. When the moving frame 22 returns to the initial position, the grinding rod 52 rises to the top. At this time, the welded aluminum tube 2 is taken out from between the two fixed rings 13, and all components return to the initial position, thus facilitating the next welding. It should be noted that chamfering is performed on both sides of the teeth on each first gear 10 and toothed ring 11.;

[0034] Specifically, each clamping plate 15 includes a first arc plate 151, an inclined portion 152, and a second arc plate 153. Moving rings 23 are fixedly arranged on both moving frames 22. A rolling ring 25 is rotatably arranged in each moving ring 23, and a plurality of balls 26 are movably arranged in each rolling ring 25. The balls 26 in each rolling ring 25 are evenly arranged. Each inclined portion 152 is arranged at the connection of the corresponding first arc plate 151 and the second arc plate 153. The rolling ring 25 is sleeved on the outer peripheral surface of three clamping plates 15 on the same side. In the initial state, each rolling ring 25 is at the first arc plate 151. At this time, the moving frame 22 is at the end of the corresponding reciprocating spiral groove 21 away from the fixed ring 13. The aluminum tube 2 is inserted into the clamping plate 15. At this time, the clamping plate 15 will not squeeze and clamp the aluminum tube 2. As the worm 5 rotates, the moving frame 22 drives the rolling ring 25 to move towards the direction close to the second arc plate 153. As the moving frame 22 moves, the inclined portion 152 is squeezed by the balls 26 to make the clamping plate 15 move towards the direction close to the aluminum tube 2. When the balls 26 abut against the second arc plate 153, the clamping plate 15 completes the clamping of the aluminum tube 2.

[0035] In another embodiment of the present invention: The lifting mechanism includes a worm gear 41 that cooperates with the worm 5. A friction wheel 42 is slidably arranged on the worm gear 41. A friction ring 28 is slidably arranged on one of the toothed rings 11. When the worm 5 drives the aluminum tube 2 to rotate at a high speed through the first gear 10 and the toothed ring 11, the friction ring 28 rotates at a low speed through the cooperation of the worm gear 41 and the worm 5. When the toothed ring 11 meshes with the corresponding first gear 10, the friction ring 28 and the friction wheel 42 do not contact. When the moving frame 22 pushes the toothed ring 11 to separate from the corresponding first gear 10, the friction wheel 42 abuts against the friction ring 28. At this time, the rotation speed of the friction ring 28 and the aluminum tube 2 is reduced through the friction wheel 42, so as to facilitate the welding manipulator 4 to weld the two aluminum tubes 2.

[0036] Further, a screw 43 is rotatably arranged on the worm gear 41. The screw 43 is threadedly connected to the friction wheel 42. A limiting rod 44 is fixedly arranged on the worm gear 41. A plurality of second springs 29 are fixedly arranged between the friction ring 28 and the corresponding toothed ring 11. The screw 43 and the limiting rod 44 are symmetrically arranged. The height of the worm 5 is fixed. By rotating the screw 43, the height of the friction wheel 42 can be adjusted, so as to change the rotation speed of the friction ring 28 when the friction ring 28 abuts against the friction wheel 42. That is, when the friction wheel 42 is lowered, the friction ring 28 abuts against the upper side of the friction wheel 42. At this time, the rotation speed of the friction ring 28 is reduced. When the friction wheel 42 is raised, the friction ring 28 abuts against the lower side of the friction wheel 42. At this time, the rotation speed of the friction ring 28 abutting against the friction wheel 42 is increased. Thus, the rotation speed of the two aluminum tubes 2 during welding by the welding manipulator 4 is adjusted, and further the thickness of the weld seam is adjusted.

[0037] Further, a fixed post 45 is fixedly arranged on the workbench 1, and a lifting sleeve 51 is slidably arranged on the fixed post 45. The lifting sleeve 51 is slidably arranged in the worm gear 41. A return pull rod 54 is fixedly arranged at the top of the lifting sleeve 51. The grinding rod 52 is slidably connected with the return pull rod 54. A third spring 55 is fixedly arranged between the lifting sleeve 51 and the grinding rod 52. The fixed post 45 is hexagonal. The lifting sleeve 51 can only move up and down and cannot rotate due to the limitation of the fixed post 45. When the worm gear 41 rotates, it drives the lifting sleeve 51 to move up and down. After the two aluminum tubes 2 are polished, the worm gear 41 drives the lifting sleeve 51 to move downward. At this time, the grinding rod 52 is driven to move downward through the return pull rod 54, so that the grinding rod 52 moves away from between the two aluminum tubes 2, and the two aluminum tubes 2 are abutted together. After the two aluminum tubes 2 are welded, the worm gear 41 drives the lifting sleeve 51 to move upward. When the lifting sleeve 51 moves upward, it drives the grinding rod 52 to move upward. At this time, the top of the grinding rod 52 abuts against the weld between the two aluminum tubes 2, and the third spring 55 is compressed. As the aluminum tube 2 rotates, the weld of the aluminum tube 2 is cleaned by the top of the grinding rod 52.

[0038] In another embodiment of the present invention: an arc-shaped groove 511 and a V-shaped groove 512 that communicate with each other are formed on the lifting sleeve 51. An abutting block (not marked in the figure) adapted to the arc-shaped groove 511 and the V-shaped groove 512 is fixedly arranged in the worm gear 41. The V-shaped groove 512 is an inverted V shape. In the initial state, the abutting block is at the end of the arc-shaped groove 511. At this time, the moving frame 22 is at the end of the reciprocating spiral groove 21 away from the fixed ring 13. As the worm 5 rotates, when the moving frame 22 moves to a quarter position of the reciprocating screw 43 groove, the abutting block moves to the other end of the arc-shaped groove 511. At this time, the moving frame 22 has squeezed the clamping plate 15 to complete the clamping and grinding of the aluminum tube 2. When the moving frame 22 moves from a quarter position of the reciprocating spiral groove 21 to the middle position, the abutting block moves through the V-shaped groove 512 and moves back to the initial position again. At this time, the grinding rod 52 completes one lift, that is, the moving frame 22 moves half the distance of the reciprocating spiral groove 21, and the worm gear 41 rotates one circle. When the moving frame 22 moves to the middle position of the reciprocating spiral groove 21, each tooth ring 11 is separated from the corresponding first gear 10. At this time, the friction wheel 42 abuts against the friction ring 28, and the two aluminum tubes 2 are abutted, so that the rotation speeds of the two aluminum tubes 2 are reduced. When the moving frame 22 moves from the middle position of the reciprocating spiral groove 21 to the end close to the fixed ring 13, the welding manipulator 4 welds the two aluminum tubes 2. When the moving frame 22 moves in the direction away from the fixed ring 13, the grinding rod 52 cleans the weld after welding. As the moving frame 22 moves in the initial direction, the clamping plate 15 releases the aluminum tube 2. When the moving frame 22 returns to the initial position, it can pull back the fixed ring 13 to make the tooth ring 11 mesh with the corresponding first gear 10 again.

[0039] Specifically, a cleaning wipe 53 is fixedly arranged at the top of the grinding rod 52; inclined surfaces are arranged on both sides of the cleaning wipe 53 and the grinding rod 52. After the toothed ring 11 is separated from the corresponding first gear 10, as the grinding rod 52 descends, when the ends of the two aluminum tubes 2 come into contact with the inclined surfaces of the cleaning wipe 53 and the grinding rod 52, the two aluminum tubes 2 approach each other and squeeze the cleaning wipe 53 and the grinding rod 52 out from between the two aluminum tubes 2. At this time, the top of the cleaning wipe 53 abuts against the connection between the two aluminum tubes 2, and the third spring 55 is compressed. When the grinding rod 52 descends to the limit, the cleaning wipe 53 still abuts against the two aluminum tubes 2.

[0040] In another embodiment of the present invention: two support frames 12 are slidably arranged on the workbench 1, each support frame 12 is rotatably connected to each fixed ring 13, a second gear 31 is rotatably arranged on each support frame 12, each second gear 31 is meshed with the corresponding toothed ring 11 one by one, a connecting rod 32 is fixedly arranged on each second gear 31, and a friction plate 33 is fixedly arranged at one end of each connecting rod 32 away from the second gear 31; serrated grooves for increasing friction are formed on each friction plate 33. The two fixed rings 13 are supported by the support frames 12. When the two moving frames 22 push the respective moving rings 23 to make the two aluminum tubes 2 abut against each other, the two friction plates 33 also abut against each other. At this time, the friction ring 28 on one of the toothed rings 11 abuts against the friction wheel 42. The friction wheel 42 drives the friction ring 28 to rotate, thereby driving the toothed ring 11 and the aluminum tube 2 to rotate. The rotation of the toothed ring 11 close to the friction ring 28 drives the corresponding second gear 31 to rotate, and further drives the corresponding connecting rod 32 and the friction plate 33 to rotate. Through the friction plate 33, the other connecting rod 32 and the second gear 31 rotate, so that the two toothed rings 11 rotate simultaneously, and further the two abutting aluminum tubes 2 rotate synchronously, which is convenient for welding.

[0041] In another embodiment of the present invention: a first spring 27 is fixedly arranged between each moving ring 23 and each fixed ring 13 in a one-to-one correspondence, and two limiting mechanisms are arranged on the workbench 1; in the initial state, the moving frame 22 is at the end of the reciprocating spiral groove 21 away from the moving frame 22. At this time, the limiting mechanism limits the two fixed rings 13, so that the two toothed rings 11 are meshed with the corresponding first gears 10. As the worm 5 rotates, the moving frame 22 starts to move. At this time, the fixed ring 13 does not move, and the first gear 10 is compressed. As the moving ring 23 moves, the rolling ring 25 clamps the aluminum tube 2 through the clamping plate 15. At this time, the aluminum tube 2 rotates with the rotation of the toothed ring 11. When the moving frame 22 moves to the middle position of the reciprocating spiral groove 21, the limiting mechanism is opened. At this time, the support frame 12 and the fixed ring 13 can move. The first spring 27 separates the toothed ring 11 from the corresponding first gear 10 and pushes the friction ring 28 to abut against the friction wheel 42.

[0042] Specifically, the limiting mechanism includes two fixed plates 61 fixedly arranged on the workbench 1. A limiting plate 62 is slidably arranged on each fixed plate 61, and a first clamping plate 63 and a second clamping plate 64 are fixedly arranged on each limiting plate 62. Two fourth springs 65 are fixedly arranged between each limiting plate 62 and the fixed plate 61. In the initial state, the support frame 12 is limited by the second clamping plate 64, so that the support frame 12 cannot move. As the moving frame 22 moves, when the moving frame 22 abuts against the first clamping plate 63, the limiting plate 62 moves away from the support frame 12. At this time, the second clamping plate 64 is separated from the support frame 12, and at this time the support frame 12 can move, as Figure 9 shown. The side of the second clamping plate 64 away from the support frame 12 is set as an inclined surface, and both sides of the first clamping plate 63 are set as inclined surfaces. When the moving frame 22 pulls the support frame 12 to abut against the second clamping plate 64 through the first spring 27, the second clamping plate 64 moves away from the support frame 12, so that the support frame 12 returns to the initial position. A servo motor 3 is fixedly arranged on the workbench 1, and the output end of the servo motor 3 is fixedly connected to the worm 5, and the worm 5 is driven to rotate by the servo motor.

[0043] Working principle: When welding the aluminum tube 2, insert the aluminum tube 2 into the fixed ring 13 from the middle of the clamping plate 15, and rotate the worm 5. When the worm 5 rotates, it drives the two moving frames 22 to move towards the grinding rod 52. At the same time, through the two first gears 10, each tooth ring 11 is driven to rotate, so that the aluminum tube 2 is closely abutted against the grinding rod 52. As the moving frame 22 moves, the rolling ring 25 squeezes the clamping plate 15 to clamp the aluminum tube 2. At this time, the worm 5 drives the two aluminum tubes 2 to rotate quickly, so that the oxide film at the end of the aluminum tube 2 is ground off by the grinding rod 52. As the moving frame 22 moves, the limiting mechanism is pushed away from the support frame 12 by the moving frame 22. At this time, the fixed ring 13 can move. As the worm 5 rotates, the worm gear 41 is driven to rotate. When the worm gear 41 rotates, it drives the lifting sleeve 51 to move up and down, and then drives the grinding rod 52 to move up and down. As the grinding rod 52 is extruded from between the two aluminum tubes 2, the two aluminum tubes 2 are abutted together, and the friction wheel 42 abuts against the friction ring 28. At this time, the two aluminum tubes 2 are driven to rotate synchronously and slowly through the friction wheel 42 and the friction ring 28, and then the connection part of the two aluminum tubes 2 is welded. After welding, the weld is cleaned by the cleaning wipe 53 at the top of the grinding rod 52. As the worm 5 rotates, the moving frame 22 moves to the initial position, and then each clamping plate 15 relaxes the welded aluminum tube 2, and at the same time pulls the tooth ring 11 to mesh with the corresponding first gear 10 again.

[0044] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A forward double extrusion machine for manufacturing double composite aluminum tube welding machine, comprising a workbench (1), characterized in that: Two fixed rings (13) are rotatably provided on the workbench (1), three clamping plates (15) for clamping the aluminum tube (2) are slidably provided in the two fixed rings (13), two movable frames (22) are slidably provided on the workbench (1), and a grinding rod (52) for grinding the end of the aluminum tube (2) is rotatably provided on the workbench (1); The driving mechanism comprises a worm (5) rotatably arranged on a workbench (1), two first gears (10) being fixedly arranged on the worm (5), and toothed rings (11) being fixedly arranged on each of the fixed rings (13), and each of the toothed rings (11) being meshed with each of the first gears (10) in a one-to-one correspondence, and two reciprocating spiral grooves (21) cooperating with a moving frame (22) being provided on the worm (5), and a lifting mechanism being provided at the bottom of the grinding rod (52), and when the worm (5) clamps the aluminum tube (2) by squeezing the clamping plate (15) through the moving frame (22), the aluminum tube (2) is driven to rotate to grind the oxide film, and the grinding rod (52) is enabled to clean the weld after welding through the lifting mechanism; Each of the clamping plates (15) comprises a first arc plate (151), an inclined portion (152), and a second arc plate (153); a moving ring (23) is fixedly arranged on each of the two moving frames (22); a rolling ring (25) is rotatably arranged in each of the moving rings (23); and a plurality of rolling balls (26) are movably arranged in each of the rolling rings (25); The lifting mechanism comprises a worm wheel (41) matched with the worm (5), a friction wheel (42) being slidably disposed on the worm wheel (41), and a friction ring (28) being slidably disposed on one of the gear rings (11).

2. A double composite aluminum tube welding machine manufactured by a forward double extruder according to claim 1, characterized in that: A screw rod (43) is rotatably provided on the worm wheel (41), the screw rod (43) is threadedly connected to the friction wheel (42), and a limit rod (44) is fixedly provided on the worm wheel (41).

3. A double composite aluminum tube welding machine manufactured by a forward double extruder according to claim 2, characterized in that: A fixed column (45) is fixedly arranged on the workbench (1), a lifting sleeve (51) is slidably arranged on the fixed column (45), the lifting sleeve (51) is slidably arranged in the worm gear (41), a pullback rod (54) is fixedly arranged on the top of the lifting sleeve (51), the grinding rod (52) is slidably connected to the pullback rod (54), and a third spring (55) is fixedly arranged between the lifting sleeve (51) and the grinding rod (52).

4. A double composite aluminum tube welding machine manufactured by a forward double extruder according to claim 3, characterized in that: The lifting sleeve (51) is provided with an arc-shaped groove (511) and a V-shaped groove (512) which are connected to each other.

5. A double composite aluminum tube welding machine manufactured by a forward double extruder according to claim 4, characterized in that: A cleaning wipe (53) is fixedly arranged on the top of the polishing rod (52).

6. A double composite aluminum tube welding machine manufactured by a forward double extruder according to claim 5, characterized in that: Two support frames (12) are slidably arranged on the workbench (1), each of the support frames (12) is rotatably connected to each fixing ring (13), each of the support frames (12) is rotatably arranged with a second gear (31), each of the second gears (31) is meshed with each gear ring (11) in a one-to-one correspondence, each of the second gears (31) is fixedly arranged with a connecting rod (32), and each of the connecting rods (32) is fixedly arranged with a friction plate (33) at one end away from the second gear (31).

7. A double composite aluminum tube welding machine manufactured by a forward double extruder according to claim 6, characterized in that: A first spring (27) is fixedly arranged between each of the movable rings (23) and each of the fixed rings (13) in a one-to-one correspondence, and two limiting mechanisms are arranged on the workbench (1).

8. A double composite aluminum tube welding machine manufactured by a forward double extrusion machine according to claim 7, characterized in that: The limiting mechanism comprises two fixed plates (61) fixedly arranged on the workbench (1), a limiting plate (62) being slidably arranged on each of the fixed plates (61), and a first clamping plate (63) and a second clamping plate (64) being fixedly arranged on each of the limiting plates (62).

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