Forming machine for high-frequency welded pipe unit

Abstract

The forming machine comprises a swing assembly, a guide assembly and an assembling assembly, the swing assembly comprises shaft seats fixed to the top face of the end of a workbench, a first rotating shaft is rotationally connected between the shaft seats, a supporting cylinder is fixed to the middle of the first rotating shaft, and the guide assembly comprises a roller core installed at the top of the supporting cylinder; the guide roller is designed to be the guide assembly capable of rotating along with the supporting cylinder, the old roller cake is automatically disassembled and the new roller cake is automatically assembled in the rotating process, the assembly assembly is arranged above the old roller cake, the assembly assembly is arranged above the old roller cake, the old roller cake is arranged on the roller core in a sleeving mode, and the assembly assembly is arranged above the old roller cake and below the old roller cake. Manual intervention is reduced, and the replacement efficiency of old roller cakes is remarkably improved; the old roller cakes or the new roller cakes are of a multi-layer stacked round cake-shaped structure, are independent of one another and are combined at will, the old roller cakes which are seriously abraded are directly replaced, the qualified old roller cakes can still be combined for continuous use, the production cost is reduced, and the resource utilization rate is increased.

Description

Technical Field

[0001] This invention relates to the field of high-frequency welded pipe unit technology, specifically a forming machine for high-frequency welded pipe units. Background Technology

[0002] High-frequency straight seam welded pipe unit is a key piece of equipment for producing various metal pipes. It is usually composed of multiple process units such as uncoiling, leveling, forming, welding, sizing and cutting connected in sequence. In these units, the steel strip is gradually processed to finally form a round tube, and the longitudinal seam is firmly connected by high-frequency induction welding technology.

[0003] As one of the core components of a high-frequency welding unit, the forming machine undertakes the crucial task of gradually rolling flat steel strips into open tube blanks. During its operation, in order to ensure that the steel strip always enters the subsequent welding station along the predetermined center line, a guide and correction device is usually set at the entrance of the forming machine to correct the deviation of the steel strip in real time, thereby ensuring accurate edge docking of the tube blank and consistent weld position.

[0004] Currently, the most widely used correction device in forming machines is the vertical roller guide device, which guides the steel strip by clamping the two sides of the steel strip with a pair of vertical rollers. However, in actual operation, the roller surface of the vertical roller is in continuous contact with the relatively sharp side of the steel strip. Even if the roller body is made of high-hardness wear-resistant material, there are still problems such as fast wear rate and limited service life, requiring frequent shutdowns for replacement. Replacement requires stopping the entire high-frequency welding unit production line, which seriously affects the continuity of production. In addition, most existing vertical rollers adopt an integrated structure of roller core and roller body. Replacement often requires complete disassembly and assembly, which is not only time-consuming to operate, but also wastes some resources and increases maintenance costs. Summary of the Invention

[0005] The purpose of this invention is to provide a forming machine for high-frequency welded pipe units to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a forming machine for a high-frequency welded pipe unit, comprising a worktable, wherein multiple forming machine arches are sequentially arranged on the top surface of the worktable, and steel strips are slidably arranged between the multiple forming machine arches;

[0007] The swing assembly includes two pairs of shaft seats symmetrically fixed to the top surface of the end of the worktable. A first rotating shaft is rotatably connected between each pair of shaft seats, and a support cylinder is fixedly provided in the middle of the first rotating shaft.

[0008] A guide assembly, the guide assembly including a roller core mounted on top of the support cylinder, the roller core having multiple old roller cakes fitted on it;

[0009] An assembly assembly includes a recycling bin fixedly installed on both sides of the end of the worktable, an assembly rod provided above the recycling bin, and multiple new roller cakes fitted on the assembly rod.

[0010] Preferably, a drive motor is fixedly installed at the end of the worktable, and drive gears are fixedly installed at the output end of the drive motor and at the end of the first rotating shaft near the drive motor. A slide rail frame is fixedly provided at the end of the worktable, and two first racks slide symmetrically in the slide rail frame, and the first racks mesh with two adjacent drive gears. A bearing is installed at the top of the support cylinder.

[0011] Preferably, the bottom end of the roller core is installed inside the bearing, and the top end of the roller core is provided with a mating groove.

[0012] Preferably, a support column is fixed to the top surface of the recycling bin, and an assembly rod is fixed to the top of the support column. A first spring and a push ring are installed on the assembly rod. The push ring is elastically connected to the assembly rod through the first spring, and the push ring abuts against the new roller cake. A pressure plate is fixed to the inner ring of the push ring, and a protruding post is fixedly provided on the other side of the inner ring of the push ring relative to the pressure plate. A top groove is opened on the surface of the assembly rod, and the pressure plate is slidably connected in the top groove. A bottom groove is opened on the surface of the assembly rod relative to the top groove, and the protruding post is slidably connected in the bottom groove.

[0013] Preferably, the end of the assembly rod is provided with a feeding assembly for controlling the release of the new roller cake. The feeding assembly includes a slide plate slidably disposed at the end of the assembly rod. The slide plate has a through hole. A second spring is installed on the back of the slide plate. A stop block is slidably disposed inside the slide plate. A third spring is installed inside the stop block. Two second racks are symmetrically fixed on the stop block.

[0014] Preferably, the assembly rod is equipped with a vibrating roller assembly for driving the roller core to reciprocate and vibrate. The vibrating roller assembly includes a vibrating column rotatably installed inside the assembly rod. A torsion spring is installed at one end of the vibrating column. A zigzag track is formed on the surface of the vibrating column. A protruding column is slidably connected inside the zigzag track. A docking rod is slidably arranged inside the other end of the vibrating column. A fourth spring is sleeved on the docking rod. Shifting strips for controlling when the docking rod slides out are symmetrically arranged on both sides of the docking rod. The shifting strips rotate relative to the docking rod. The end of the second rack is slidably connected to the end face of the shifting strip.

[0015] Preferably, the assembly rod is provided with a release component for controlling when the stop block retracts. The release component includes a gear rod rotatably installed inside the assembly rod. The two ends of the gear rod are meshed with two second racks. A slider is slidably connected to the end of the top groove. The pressure plate abuts against the slider. A third rack is fixed to the bottom surface of the slider. The third rack is meshed with the middle part of the gear rod. Two fifth springs are also symmetrically arranged on the bottom surface of the slider.

[0016] Preferably, the end of the worktable is further provided with an anti-detachment component to prevent the old roller cake from loosening. The anti-detachment component includes a lifting motor fixedly installed at the bottom of the end of the worktable, a lead screw fixedly installed at the output end of the lifting motor, a lifting platform slidably installed at the bottom of the end of the worktable, the lifting platform being threadedly connected to the lead screw, a limit frame fixedly installed on the top surface of the shaft seat, a lifting frame slidably connected inside the limit frame, the bottom end of the lifting frame being fixed to the lifting platform, and a cover fixedly installed at the top of the lifting frame. The cover is sleeved on the top of the roller core and abuts against the old roller cake.

[0017] Preferably, the bearing is provided with an auxiliary component for temporary correction and guidance during the replacement of the old roller cake in the guide assembly. The auxiliary component includes a support base fixed to the side of the limiting frame. A second rotating shaft is rotatably arranged inside the support base. A transmission gear is fixed at one end of the second rotating shaft, and an auxiliary roller is fixed at the other end of the second rotating shaft. A toothed plate is provided on the side of the lifting frame, and the toothed plate is meshed with the transmission gear.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The traditional fixed vertical guide roller is designed as a guide assembly that can rotate with the support cylinder. As needed, the swing assembly drives the guide assembly to rotate 120° forward, 75° backward, and 45° backward, corresponding to the three stages of old roller removal, new roller assembly, and reset, respectively. The entire rotation process automatically completes the removal of old rollers and the assembly of new rollers, greatly reducing manual intervention and significantly improving the replacement efficiency of old rollers. In the new roller assembly stage, the rotation direction of the roller core can also be used to control the sliding of the slide plate, so as to achieve the effect of accurately releasing the new roller after the roller core is aligned with the axis of the assembly rod.

[0020] 2. The old or new roller cake adopts a multi-layer stacked circular structure. Each layer of old or new roller cake is independent and can be combined arbitrarily. Compared with the traditional guide roller using roller core and roller body, the old and new roller cakes can be selectively replaced according to the degree of wear. Qualified old or new roller cakes can still be combined and used, which greatly reduces production costs and improves resource utilization.

[0021] 3. When the roller core drives the slide plate back to the end of the assembly rod, it can also push the docking rod to engage with the docking groove through the cooperation of the second rack and the shifting bar. Then, during the process of the push ring pushing the new roller cake to slide onto the roller core, the cooperation of the convex column and the herringbone track, as well as the torsion spring, drives the shaking column and the docking rod to reciprocate and rotate at a certain angle, realizing the reciprocating rotation of the roller core. Adjusting the angle makes the inner wall groove of the new roller cake aligned with the teeth on the roller core, which significantly reduces the assembly difficulty of the new roller cake sliding onto the roller core and improves the assembly efficiency.

[0022] 4. The lifting motor drives the lifting frame to rise and fall via a screw, realizing the functions of sealing and pressing the core of the roll and releasing the core. At the same time, by driving the toothed plate to rise and fall, it drives the auxiliary roller to swing. Before the swinging component drives the guide component to rotate, it adjusts the posture of the auxiliary roller, so that it replaces the guide component to guide the steel strip into the forming machine frame. This achieves the effect of changing the guide roller without stopping the steel pipe welding and processing production line, effectively solving the efficiency loss problem caused by the need to stop the machine to change the roller in traditional production. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure at the end of the worktable of the present invention;

[0025] Figure 3 This is a disassembled schematic diagram of the swing assembly and guide assembly of the present invention;

[0026] Figure 4 This is a schematic diagram showing the cooperation between the anti-detachment component, auxiliary component, and guide component of the present invention;

[0027] Figure 5 This is a schematic diagram of the state in which the swing component of the present invention drives the guide component to rotate;

[0028] Figure 6 This is a schematic diagram of the guide assembly of the present invention releasing the old roller cake;

[0029] Figure 7 This is a schematic diagram showing the docking state of the guide component and the assembly component of the present invention;

[0030] Figure 8 This is a schematic diagram of the bottom structure of the assembly rod of the present invention;

[0031] Figure 9 This is a schematic diagram of the cross-sectional structure of the assembly rod of the present invention;

[0032] Figure 10 This is a schematic diagram showing the cooperation between the tablet pressing and contacting assembly, the release assembly, and the discharging assembly of the present invention;

[0033] Figure 11 For the present invention Figure 10Enlarged view of point A in the middle;

[0034] Figure 12 This is a schematic diagram showing the state of the assembly rod after releasing the new roller cake according to the present invention;

[0035] Figure 13 This is a schematic diagram of the convex post and the herringbone track of the present invention;

[0036] Figure 14 This is a partial cross-sectional schematic diagram of the shaking column of the present invention;

[0037] Figure 15 For the present invention Figure 14 Enlarged diagram of point B in the middle.

[0038] In the diagram: 10. Workbench; 11. Forming machine archway; 12. Steel belt; 2. Swing assembly; 20. Drive motor; 21. Drive gear; 22. Slide rail frame; 23. First rack; 24. Shaft seat; 25. First rotating shaft; 26. Support cylinder; 27. Bearing; 3. Guide assembly; 30. Roll core; 31. Connecting groove; 32. Old roller cake; 4. Assembly assembly; 40. Recycling box; 41. Support column; 42. Assembly rod; 43. First spring; 44. Push ring; 45. New roller cake; 46. Press plate; 47. Protruding column; 48. Top groove; 49. Bottom groove; 5. Discharge assembly; 50. Slide plate; 51. Through hole 52. Second spring; 53. Stop block; 54. Third spring; 55. Second rack; 6. Shaking roller assembly; 60. Shaking column; 61. Torsion spring; 62. Zigzag track; 63. Connecting rod; 64. Fourth spring; 65. Shifting bar; 7. Release assembly; 70. Gear rod; 71. Slider; 72. Third rack; 73. Fifth spring; 8. Anti-detachment assembly; 80. Lifting motor; 81. Lead screw; 82. Lifting platform; 83. Limit frame; 84. Lifting frame; 85. Cover; 9. Auxiliary assembly; 90. Support base; 91. Toothed plate; 92. Second rotating shaft; 93. Transmission gear; 94. Auxiliary roller. Detailed Implementation

[0039] 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.

[0040] Please see Figure 1-9 The present invention provides a technical solution: a forming machine for a high-frequency welded pipe unit;

[0041] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3, Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 12 and Figure 13 This embodiment describes an implementable structure of a forming machine in a high-frequency welding unit;

[0042] Includes a workbench 10, with multiple molding machine arches 11 arranged sequentially on the top surface of the workbench 10, and steel belts 12 slidingly arranged between the multiple molding machine arches 11;

[0043] The forming machine archway 11 is the main body of the forming machine, which consists of a series of large components according to the needs of the production line, including a frame or archway, forming roller assembly, roller adjustment equipment, and power system. It is used to extrude steel strip into steel pipe blanks, which are then welded into steel pipes by a subsequent high-frequency welding pipe machine.

[0044] The swing assembly 2 includes two pairs of shaft seats 24 symmetrically fixed on the top surface of the end of the worktable 10. A first rotating shaft 25 is rotatably connected between each pair of shaft seats 24. A support cylinder 26 is fixedly installed in the middle of the first rotating shaft 25. A drive motor 20 is fixedly installed at the end of the worktable 10. A drive gear 21 is fixedly installed at the output end of the drive motor 20 and at the end of the first rotating shaft 25 near the drive motor 20. A slide rail frame 22 is fixedly installed at the end of the worktable 10. Two first racks 23 slide symmetrically in the slide rail frame 22. The first racks 23 are meshed with two adjacent drive gears 21. A bearing 27 is installed at the top of the support cylinder 26.

[0045] In this embodiment, the first rotating shaft 25 is powered by the drive motor 20, which drives the support cylinder 26 to rotate, thereby causing the guide assembly 3 to swing towards the side of the steel strip 12. This, in conjunction with the assembly assembly 4, enables the automatic and rapid removal of the old roller cake 32 and replacement of the new roller cake 45, reducing manual intervention and significantly improving the replacement efficiency of the guide assembly 3. The drive gear 21 at the output end of the drive motor 20 is in the middle position, and the drive gears 21 at the ends of the two first rotating shafts 25 are symmetrically positioned on both sides of this drive gear 21. Two first racks are mirror-symmetrically arranged. The first gears 23 are of equal length. One of the first gears 23 meshes with both the middle drive gear 21 and the drive gear 21 on one side, while the other first gear 23 meshes with both the middle drive gear 21 and the drive gear 21 on the other side. The drive motor 20 is controlled by the PLC and drives the first rotating shaft 25 to rotate through the drive gear 21 and the first gear 23. The rotation logic is as follows: with the vertical state of the support cylinder 26 as the origin, it first rotates at a constant speed 120° away from the steel belt 12 and then pauses. For ease of description, this rotation is referred to as forward rotation. Then it returns at the original speed. Again, for ease of description, the reverse rotation of the guide assembly 3 is referred to as reverse rotation. It pauses again when it reaches the 45° position and finally returns to the origin.

[0046] The guide assembly 3 includes a roller core 30 installed on the top of the support cylinder 26. Multiple old roller cakes 32 are fitted on the roller core 30. The bottom end of the roller core 30 is installed in the bearing 27, and the top end of the roller core 30 is provided with a docking groove 31.

[0047] Traditional guide rollers are mostly composed of a roller core 30 and a roller body. When the roller body wears out, the entire roller body and roller core 30 need to be replaced. However, the contact area between the steel strip 12 and the roller body is generally in the middle of the roller body, and the upper and lower sections are basically unworn. Replacing them all would result in a huge waste of resources. Therefore, in this embodiment, the old roller cake 32 and the new roller cake 45 adopt a multi-layer roller cake design. Each layer of old roller cake 32 is independent and can be combined arbitrarily. When the wear is only in the middle old roller cake 32, even if all the old roller cakes 32 are replaced later, the other two old roller cakes 32 can be recycled and reused. Only the old roller cake 32 in the middle that is worn needs to be discarded. This can effectively reduce cost input and improve resource utilization and profit margin in production. The roller core 30 and the old roller cake 32 adopt a matching tooth groove design. After the old roller cake 32 is installed on the roller core 30, the teeth of the groove restrict each other, which can better prevent the old roller cake 32 from rotating, thereby avoiding affecting the guiding function of the guide component 3.

[0048] Assembly component 4 includes a recycling bin 40 fixedly installed on both sides of the end of the workbench 10. An assembly rod 42 is provided above the recycling bin 40. Multiple new roller cakes 45 are fitted on the assembly rod 42. A support column 41 is fixed on the top surface of the recycling bin 40. The assembly rod 42 is fixed to the top of the support column 41. A first spring 43 and a push ring 44 are installed on the assembly rod 42. The push ring 44 is elastically connected to the assembly rod 42 through the first spring 43 and abuts against the new roller cakes 45. A pressure plate 46 is fixed in the inner ring of the push ring 44. A protrusion 47 is fixed in the inner ring of the push ring 44 on the other side of the pressure plate 46. A top groove 48 is opened on the surface of the assembly rod 42. The pressure plate 46 is slidably connected in the top groove 48. A bottom groove 49 is opened on the surface of the assembly rod 42 relative to the top groove 48. The protrusion 47 is slidably connected in the bottom groove 49.

[0049] In this embodiment, after the support cylinder 26 drives the guide assembly 3 to rotate 120°, the roller core 30 tilts downward, and the old roller cake 32 naturally falls into the recycling box 40, completing the recycling. Subsequently, the support cylinder 26 drives the roller core 30 back to 45° and stops. At this time, the roller core 30 is aligned with the axis of the assembly rod 42, and the new roller cake 45, which was pre-installed on the assembly rod 42, automatically slides onto the roller core 30, completing the assembly of the new roller cake 45. This process is completely automatic, reducing manual intervention and interference, and can significantly improve the efficiency of replacing the new roller cake 45 and reduce the replacement time. The assembly rod 42 is provided with a sliding push ring 44 that is pushed by the elastic force of the first spring 43. When the new roller cake 45 is installed on the assembly rod 42, the first spring 43 contracts, the push ring 44 abuts against the new roller cake 45, and the new roller cake 45 slides into the 30. The push ring 44 pushes the new roller cake 45 to move synchronously under the elastic force of the first spring 43, avoiding the new roller cake 45 from sliding and getting stuck, making the assembly smoother.

[0050] The end of the assembly rod 42 is provided with a feeding assembly 5 for controlling the release of the new roller cake 45. The feeding assembly 5 includes a slide plate 50 slidably disposed at the end of the assembly rod 42. A through hole 51 is opened on the slide plate 50. A second spring 52 is installed on the back of the slide plate 50. A stop block 53 is slidably disposed inside the slide plate 50. A third spring 54 is installed inside the stop block 53. Two second racks 55 are symmetrically fixed on the stop block 53.

[0051] The slide plate 50 in the feeding assembly 5 is elastically connected to the end of the assembly rod 42 by the second spring 52. In the initial state, the slide plate 50 pops out from the end of the assembly rod 42, blocking the new roller cake 45 installed on the assembly rod 42 and preventing it from falling off. The slide plate 50 is also equipped with a stop block 53 that can retract into the slide plate 50. One side of the stop block 53 is inclined and the other side is curved. When the guide assembly 3 rotates clockwise to 45°, the top of the roller core 30 abuts against the inclined surface of the stop block 53 and presses the stop block 53 into the slide plate 50, so as not to obstruct the clockwise rotation of the guide assembly 3. When the guide assembly 3 rotates counterclockwise to 45°, the top of the roller core 30 abuts against the curved surface of the stop block 53 and cannot press the stop block 53 into the slide plate 50. The stop block 53 forms an obstruction, so the roller core 30 drives the slide plate 50 back to the end of the assembly rod 42 through the stop block 53. Finally, the release of the new roller cake 45 is completed through cooperation.

[0052] The assembly rod 42 is provided with a release component 7 for controlling when the stop block 53 retracts. The release component 7 includes a gear rod 70 rotatably installed inside the assembly rod 42. The two ends of the gear rod 70 are meshed with two second racks 55. A slider 71 is slidably connected to the end of the top groove 48. The pressure plate 46 abuts against the slider 71. A third rack 72 is fixed to the bottom surface of the slider 71. The third rack 72 is meshed with the middle of the gear rod 70. Two fifth springs 73 are also symmetrically arranged on the bottom surface of the slider 71.

[0053] In this embodiment, the release component 7 serves as an intermediate transmission device. When the slide plate 50 is driven by the roller core 30 and returns to the end of the assembly rod 42, the two second racks 55 on the back of the stop block 53 mesh with the corresponding gear rod 70. The gear rod 70 consists of a round rod and three small gears fixed at equal intervals on the round rod. The third rack 72 meshes with the middle small gear, and the two second racks 55 mesh with the small gears at the ends of the round rod, respectively. As the new roller cake 45 slides down into the roller core 30, the push ring 44 not only pushes the new roller cake 45 to slide, but also drives the pressure plate 46 to slide in the top groove 48. When the pressure plate 46 slides to the end of the top groove 48, the pressure plate 46 just touches the slider 71, causing the slider 71 to sink into the assembly rod 42. The third rack 72 drives the gear rod 70 to rotate, and then the gear rod 70 and the second rack 55 work together to drive the stop block 53 to retract into the slide plate 50, releasing the obstruction to the roller core 30.

[0054] Example 2: Please refer to Figure 13 , Figure 14 and Figure 15Based on Embodiment 1, this embodiment takes into account that the roller core 30 surface and the inner wall of the new roller cake 45 in Embodiment 1 are provided with mutually cooperating grooves and teeth. When the push ring 44 pushes the new roller cake 45 from the assembly rod 42 onto the roller core 30, there may be misalignment of the grooves and teeth, causing the new roller cake 45 to get stuck and difficult to slide smoothly. Therefore, Embodiment 2 solves the problem of misalignment between the mating groove of the inner wall of the roller cake 45 and the teeth on the surface of the roller core 30, which makes it difficult for the roller cake 45 to slide smoothly, through the following structure.

[0055] The assembly rod 42 is equipped with a shaking roller assembly 6 for driving the roller core 30 to reciprocate and shake. The shaking roller assembly 6 includes a shaking column 60 rotatably installed inside the assembly rod 42. A torsion spring 61 is installed at one end of the shaking column 60. A zigzag track 62 is opened on the surface of the shaking column 60. A protruding column 47 is slidably connected inside the zigzag track 62. A docking rod 63 is slidably arranged inside the other end of the shaking column 60. A fourth spring 64 is sleeved on the docking rod 63. Shifting bars 65 are symmetrically arranged on both sides of the docking rod 63 to control when the docking rod 63 slides out. The shifting bars 65 rotate relative to the docking rod 63. The end of the second rack 55 is slidably connected to the end face of the shifting bar 65.

[0056] In this embodiment, rollers that reduce friction are installed at the tails of the two second racks 55 on the back of the stop 53. During the sliding of the slide plate 50 at the end of the assembly rod 42, the rollers at the tails of the second racks 55 also slide on the end face of the shifting strip 65. The second racks 55 move linearly. Under the elastic force of the fourth spring 64 inside the vibrating column 60, the rollers at the tails of the second racks 55 always remain in contact with the end face of the shifting strip 65. That is, to ensure that the end face of the shifting strip 65 abuts against the rollers at the tails of the second racks 55, the docking rod 63 will drive the shifting strip 65 to slide along the axis of the vibrating column 60. When the roller core 30 returns to the end of the assembly rod 42 via the stop 53, the second racks 55 will press against the shifting strip 65, causing the docking rod 63 to slide out of the assembly rod 42, pass through the through hole 51 on the slide plate 50, and finally engage with the docking groove 31 at the top of the roller core 30.

[0057] In addition to its functions of pushing the new roller cake 45 to slide smoothly and driving the pressure plate 46 to abut against the slider 71, the push ring 44 can also drive the protrusion 47 to slide linearly in the bottom groove 49. Based on the linear sliding of the protrusion 47 and its cooperation with the herringbone track 62, the shaking column 60 is driven to rotate. When the shaking column 60 rotates, the torsion spring 61 will store force. With the elastic force of the torsion spring 61, the shaking column 60 can reciprocate within the assembly rod 42 at a certain angle, which in turn drives the roller core 30 to reciprocate on the support cylinder 26 through the docking rod 63. This oscillation makes it easy for the inner wall groove of the new roller cake 45 to align with the teeth on the roller core 30, thus achieving smooth installation.

[0058] The docking rod 63 reciprocates with the shaking column 60, and can also slide along the axis of the shaking column 60. When the docking rod 63 slides, it can drive the shifting bar 65 to move synchronously. When the docking rod 63 reciprocates, the shifting bar 65 remains stationary, ensuring that the second rack 55 and the shifting bar 65 cooperate better.

[0059] Example 3: Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 Based on Embodiment 1, this embodiment takes into account that the swing component 2 needs to rotate during the process of driving the guide component 3 to replace the new roller cake 45 in Embodiment 1. After rotation, the guide component 3 cannot correct and guide the steel strip 12. Therefore, Embodiment 3 solves the problem of not being able to correct and guide the steel strip 12 when replacing the new roller cake 45 through the following structure.

[0060] The end of the workbench 10 is also provided with an anti-detachment component 8 to prevent the old roller cake 32 from loosening. The anti-detachment component 8 includes a lifting motor 80 fixedly installed at the bottom of the end of the workbench 10. A lead screw 81 is fixedly installed at the output end of the lifting motor 80. A lifting platform 82 is slidably installed at the bottom of the end of the workbench 10. The lifting platform 82 is threadedly connected to the lead screw 81. A limit frame 83 is fixedly installed on the top surface of the bearing seat 24. A lifting frame 84 is slidably connected inside the limit frame 83. The bottom end of the lifting frame 84 is fixed on the lifting platform 82. A cover 85 is fixed at the top of the lifting frame 84. The cover 85 is sleeved on the top of the roller core 30 and the cover 85 abuts against the old roller cake 32.

[0061] The bearing seat 24 is provided with an auxiliary component 9 for temporary correction and guidance during the replacement of the old roller cake 32 by the guide assembly 3. The auxiliary component 9 includes a support seat 90 fixed to the side of the limit frame 83. A second rotating shaft 92 is rotatably arranged inside the support seat 90. A transmission gear 93 is fixed at one end of the second rotating shaft 92, and an auxiliary roller 94 is fixed at the other end of the second rotating shaft 92. A toothed plate 91 is provided on the side of the lifting frame 84, and the toothed plate 91 is meshed with the transmission gear 93.

[0062] In this embodiment, an anti-detachment mechanism 8 is provided on the bottom surface of the end of the workbench 10. The lifting platform 82 is driven to rise and fall by the lifting motor 80 and the lead screw 81, thereby driving the lifting frame 84 and the cover 85 to rise and fall. The cover 85 is used to press the old roller cake 32 on the roller core 30 to prevent loosening during the guiding process. When the old roller cake 32 needs to be replaced, the lifting motor 80 lifts the cover 85 in advance through the lifting frame 84, so that the cover 85 is separated from the roller core 30, thus avoiding obstruction of the rotation of the guide assembly 3.

[0063] At the same time, the lifting frame 84 can also drive the auxiliary roller 94 in the auxiliary component 9 to rotate, from the initial tilt to vertical, replacing the guide component 3 to guide the steel strip 12 into the forming machine arch 11, so that the guide roller can be replaced without stopping the steel pipe welding production line, effectively solving the efficiency loss problem caused by the need to stop the machine to replace it in traditional production.

[0064] Working principle: Under normal operating conditions, the guide assembly 3 and the support cylinder 26 stand vertically on both sides of the steel strip 12. The old roller cake 32 abuts against the side of the steel strip 12, and feeds the steel strip 12 into the forming machine frame 11 for forming. The cover 85 is installed on the top of the roller core 30, pressing down on the old roller cake 32 to prevent it from loosening. The auxiliary assembly 9 is positioned as follows: Figure 2 As shown in the diagram, the steel strip 12 moves within the forming machine frame 11, simultaneously driving the old roller cake 32 to rotate. The old roller cake 32 drives the roller core 30 to rotate on the bearing 27. At the same time, the old roller cake 32 mechanically constrains the edge of the steel strip 12, forcibly guiding the steel strip 12 to the center line of the forming machine frame 11. Under the elastic force of the second spring 52, the slide plate 50 slides out from the end of the assembly rod 42, blocking the new roller cake 45 installed on the assembly rod 42.

[0065] When replacing the old roller cake 32, first start the lifting motor 80, which drives the lead screw 81 to rotate, causing the lifting platform 82 to rise. The lifting platform 82 drives the lifting frame 84 to slide upward inside the limit frame 83. The lifting frame 84 drives the cover 85 to rise, separating it from the roller core 30 and the old roller cake 32.

[0066] During the lifting process, the toothed plate 91 on the side of the lifting frame 84 can drive the transmission gear 93 to rotate, thereby driving the auxiliary roller 94 to rotate through the second rotating shaft 92. The auxiliary roller 94 is adjusted from its original inclined state to a vertical state, and the auxiliary roller 94 abuts against the side of the steel belt 12, replacing the function of the guide component 3.

[0067] Subsequently, the drive motor 20 starts, and through the cooperation of the drive gear 21 and the first rack 23, it drives the first rotating shaft 25 to rotate in the bearing seat 24. The first rotating shaft 25 drives the guide assembly 3 to rotate 120° forward through the support cylinder 26. At this time, the top of the roller core 30 tilts downward, and all the old roller cakes 32 that need to be replaced are poured into the recycling box 40.

[0068] When the roller core 30 rotates to 45°, its top end first contacts the stop block 53 on the slide plate 50. However, since the contact surface on the stop block 53 is inclined, under the squeezing force of the roller core 30, the stop block 53 retracts into the slide plate 50, allowing the roller core 30 to pass smoothly. After the roller core 30 passes, the stop block 53 quickly returns to its original position under the elastic force of the third spring 54.

[0069] After all the old roller cakes 32 fall into the recycling bin 40, the swing assembly 2 drives the roller core 30 to rotate 75° until the roller core 30 is aligned with the axis of the assembly rod 42 and the top of the roller core 30 abuts against the end of the assembly rod 42. During this process, the end of the roller core 30 first abuts against the arc surface of the stop block 53. Under the restriction of the stop block 53, the roller core 30 drives the slide plate 50 to reset. When the roller core 30 is aligned with the axis of the assembly rod 42, the slide plate 50 is just reset, and the two second racks 55 on its back simultaneously mesh with the gear rod 70. Moreover, during the reset process of the slide plate 50, the roller at the tail end of the second rack 55 always slides on the end face of the shifting bar 65. When the slide plate 50 is close to the reset endpoint, the roller begins to enter the bend of the shifting bar 65, and then pushes the docking rod 63 out of the shaking column 60 through the shifting bar 65. The end of the docking rod 63 slides out from the end of the assembly rod 42, passes through the through hole 51, and finally engages with the docking groove 31 at the top of the roller core 30.

[0070] After the slide plate 50 is fully reset, the new roller cake 45 loses the obstruction of the slide plate 50 and gradually slides down onto the roller core 30. Under the elastic force of the first spring 43, the push ring 44 on the mounting rod 42 pushes the new roller cake 45 to slide down.

[0071] As the push ring 44 slides along the axis of the assembly rod 42, it simultaneously drives the pressure plate 46 and the protrusion 47 to slide inside the corresponding top groove 48 and bottom groove 49, respectively. The protrusion 47 cooperates with the herringbone track 62, and with the elastic force of the torsion spring 61, the shaking column 60 reciprocates at a certain angle during the linear sliding of the protrusion 47, forming a back-and-forth shaking state. This drives the roller core 30 to shake synchronously through the docking rod 63, accelerating the assembly of the new roller cake 45 and the roller core 30, and improving assembly efficiency and success rate.

[0072] Simultaneously, the pressure plate 46 slides within the top groove 48. When the pressure plate 46 slides to the end of the top groove 48, the new roller cake 45 has been successfully assembled onto the roller core 30. At this point, the pressure plate 46 precisely abuts against the slider 71 at the end of the top groove 48, pressing the slider 71 into the assembly rod 42. This causes the slider 71 to drive the gear rod 70 to rotate via the third rack 72, thereby driving the second rack 55 to slide into the assembly rod 42. This, in turn, causes the stop block 53 to retract into the slide plate 50, removing the obstruction to the roller core 30. The retraction of the stop block 53 compresses the third spring 54.

[0073] Afterwards, the drive motor 20 starts again, driving the guide assembly 3 back to its initial position. Since the second rack 55 has penetrated deep into the assembly rod 42, the slide plate 50 cannot pop out again. Only after the new roller cake 45 is reinstalled on the assembly rod 42 and the push ring 44 is reset, the slider 71, the third rack 72 and the second rack 55 can be reset under the elastic force of the fifth spring 73 and the third spring 54. Then, under the elastic force of the second spring 52, the slide plate 50 pops out from the end of the assembly rod 42 again, blocking the new roller cake 45.

[0074] After the new guide assembly 3 returns to its initial position, it re-engages with the side of the steel strip 12. The lifting motor 80 is restarted, and the lifting platform 82, lifting frame 84, and cover 85 are lowered. The cover 85 presses down on the new roller cake 45 on the roller core 30 again. The lowering of the lifting frame 84 drives the transmission gear 93 to reverse. The transmission gear 93 drives the auxiliary roller 94 to reverse through the second rotating shaft 92, separating it from the steel strip 12 and returning it to the inclined position.

[0075] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forming machine for a high-frequency welded pipe unit, comprising a worktable (10), wherein multiple forming machine arches (11) are sequentially arranged on the top surface of the worktable (10), and steel strips (12) are slidably arranged between the multiple forming machine arches (11), characterized in that: The swing assembly (2) includes two pairs of bearing seats (24) symmetrically fixed on the top surface of the end of the worktable (10). A first rotating shaft (25) is rotatably connected between each pair of bearing seats (24), and a support cylinder (26) is fixedly provided in the middle of the first rotating shaft (25). The guide assembly (3) includes a roller core (30) mounted on the top of the support cylinder (26), on which a plurality of old roller cakes (32) are fitted. Assembly component (4), the assembly component (4) includes a recycling bin (40) fixedly installed on both sides of the end of the workbench (10), an assembly rod (42) is provided above the recycling bin (40), and multiple new roller cakes (45) are fitted on the assembly rod (42).

2. The forming machine for a high-frequency welded pipe unit according to claim 1, characterized in that: A drive motor (20) is fixedly installed at the end of the workbench (10). A drive gear (21) is fixedly installed at the output end of the drive motor (20) and at the end of the first rotating shaft (25) near the drive motor (20). A slide rail frame (22) is fixedly provided at the end of the workbench (10). Two first racks (23) slide symmetrically in the slide rail frame (22), and the first racks (23) mesh with the two adjacent drive gears (21). A bearing (27) is installed at the top of the support cylinder (26).

3. The forming machine for a high-frequency welded pipe unit according to claim 2, characterized in that: The bottom end of the roller core (30) is installed in the bearing (27), and the top end of the roller core (30) is provided with a mating groove (31).

4. The forming machine for a high-frequency welded pipe unit according to claim 1, characterized in that: The top surface of the recycling bin (40) is fixed with a support column (41), and the assembly rod (42) is fixed at the top of the support column (41). A first spring (43) and a push ring (44) are installed on the assembly rod (42). The push ring (44) is elastically connected to the assembly rod (42) through the first spring (43), and the push ring (44) abuts against the new roller cake (45). A pressure plate (46) is fixed in the inner ring of the push ring (44). A protrusion (47) is fixed in the inner ring of the push ring (44) on the other side relative to the pressure plate (46). A top groove (48) is opened on the surface of the assembly rod (42). The pressure plate (46) is slidably connected in the top groove (48). A bottom groove (49) is opened on the surface of the assembly rod (42) relative to the top groove (48). The protrusion (47) is slidably connected in the bottom groove (49).

5. A forming machine for a high-frequency welded pipe unit according to claim 4, characterized in that: The assembly rod (42) is provided with a feeding assembly (5) for controlling the release of the new roller cake (45) at its end. The feeding assembly (5) includes a slide plate (50) slidably disposed at the end of the assembly rod (42). A through hole (51) is provided on the slide plate (50). A second spring (52) is installed on the back of the slide plate (50). A stop block (53) is slidably disposed inside the slide plate (50). A third spring (54) is installed inside the stop block (53). Two second racks (55) are symmetrically fixed on the stop block (53).

6. A forming machine for a high-frequency welded pipe unit according to claim 5, characterized in that: The assembly rod (42) is equipped with a shaking roller assembly (6) for driving the roller core (30) to reciprocate. The shaking roller assembly (6) includes a shaking column (60) rotatably installed inside the assembly rod (42). A torsion spring (61) is installed at one end of the shaking column (60). A zigzag track (62) is opened on the surface of the shaking column (60). The protruding column (47) is slidably connected inside the zigzag track (62). A docking rod (63) is slidably arranged inside the other end of the shaking column (60). A fourth spring (64) is sleeved on the docking rod (63). A shifting bar (65) for controlling when the docking rod (63) slides out is symmetrically arranged on both sides of the docking rod (63). The shifting bar (65) rotates relative to the docking rod (63). The end of the second rack (55) is slidably connected to the end face of the shifting bar (65).

7. A forming machine for a high-frequency welded pipe unit according to claim 5, characterized in that: The assembly rod (42) is provided with a release component (7) for controlling when the stop block (53) retracts. The release component (7) includes a gear rod (70) rotatably installed inside the assembly rod (42). The two ends of the gear rod (70) are meshed with two second racks (55). The top groove (48) is slidably connected to a slider (71). The pressure plate (46) abuts against the slider (71). A third rack (72) is fixed on the bottom surface of the slider (71). The third rack (72) is meshed with the middle part of the gear rod (70). Two fifth springs (73) are also symmetrically arranged on the bottom surface of the slider (71).

8. A forming machine for a high-frequency welded pipe unit according to claim 1, characterized in that: The end of the workbench (10) is also provided with an anti-detachment component (8) for preventing the old roller cake (32) from loosening. The anti-detachment component (8) includes a lifting motor (80) fixedly installed at the bottom of the end of the workbench (10). A lead screw (81) is fixedly installed at the output end of the lifting motor (80). A lifting platform (82) is slidably provided at the bottom of the end of the workbench (10). The lifting platform (82) is threadedly connected to the lead screw (81). A limit frame (83) is fixedly provided on the top surface of the shaft seat (24). A lifting frame (84) is slidably connected inside the limit frame (83). The bottom end of the lifting frame (84) is fixed on the lifting platform (82). A cover (85) is fixed at the top end of the lifting frame (84). The cover (85) is sleeved on the top end of the roller core (30), and the cover (85) abuts against the old roller cake (32).

9. A forming machine for a high-frequency welded pipe unit according to claim 8, characterized in that: The bearing seat (24) is provided with an auxiliary component (9) for temporary correction and guidance during the replacement of the old roller cake (32) of the guide assembly (3). The auxiliary component (9) includes a support seat (90) fixed to the side of the limiting frame (83). A second rotating shaft (92) is rotatably provided inside the support seat (90). A transmission gear (93) is fixed at one end of the second rotating shaft (92), and an auxiliary roller (94) is fixed at the other end of the second rotating shaft (92). A toothed plate (91) is provided on the side of the lifting frame (84), and the toothed plate (91) is meshed with the transmission gear (93).

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