Self-adaptive roller carrier equipment for irregular barrel with different diameters in segmented mode

Abstract

The invention provides self-adaptive roller carrier equipment for a segmented different-diameter irregular barrel, and relates to the technical field of auxiliary equipment for circular seam welding of carbon steel and stainless steel barrels in the boiler industry. The self-adaptive roller carrier equipment comprises a machine base, a driving roller set and a driven roller set are symmetrically arranged on the machine base, and driving rollers at the two ends are used for supporting one end of the barrel; driven rollers are arranged at the two ends of the driven roller set and used for supporting the other end of the to-be-welded barrel; the distance between driving rollers at the two ends of the driving roller set can be adjusted so as to be matched with to-be-welded barrels with different barrel diameters, and the distance between driven rollers at the two ends of the driven roller set can be matched with to-be-welded barrels with different barrel diameters. A lifting assembly is arranged between the driven roller set and the machine base and used for adjusting the height of the driven roller set. The lifting assembly is in sliding fit with the machine base and is driven by the axial adjusting assembly, so that the lifting assembly drives the driven roller set to move close to or away from the driving roller set in the axial direction of the barrel to be welded.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary equipment for carbon steel and stainless steel cylinder circumferential seam welding in the boiler industry, and in particular to an adaptive roller frame device for irregular cylinders with segmented different diameters. Background Art

[0002] The welding roller frame is a device that drives the cylindrical or conical weldment to rotate by means of the friction between the weldment and the active roller. It is mainly used on a series of large machines in heavy industry. The welding roller frame is a welding auxiliary equipment, which is often used for welding the inner and outer circumferential seams and inner and outer longitudinal seams of cylindrical workpieces. It is usually composed of a base, an active roller, a driven roller, a bracket, a transmission device, a power device drive, etc. The transmission device drives the active roller, and uses the friction between the active roller and the cylindrical workpiece to drive the workpiece to rotate and achieve displacement, which can realize the horizontal position welding of the inner and outer circumferential seams and the inner and outer longitudinal seams of the workpiece. The matching automatic welding equipment can realize automatic welding, which can greatly improve the quality of the weld, reduce labor intensity, and improve work efficiency. The welding roller frame can also cooperate with manual welding or be used as a device for detecting and assembling cylindrical workpieces. The height of the existing welding roller frame and the spacing between the active roller and the driven roller are fixed, which is usually only suitable for the welding of one type of cylindrical workpiece. It is inconvenient for workpieces of different shapes and sizes, especially for irregular cylinders with different diameters in sections.

[0003] For example, in the Chinese patent literature, the publication number is CN214721947U, the publication date is November 16, 2021, and the name is an invention patent for a cylinder automatic welding device, a frame, a controller and a mechanical arm are installed on the frame, a welding gun is installed on the mechanical arm, and the controller is connected to the mechanical arm and the welding gun respectively. The controller controls the mechanical arm and the welding gun to perform welding operations on the cylinder; a welding positioner, the welding A welding platform and a lifting assembly are installed on the positioner. A roller shaft, a card wheel shaft, a rotating disk and a roller chain are installed on the welding platform. The roller shaft, the rotating disk and the lifting assembly cooperate to adjust the position of the cylinder, and the card wheel shaft and the roller chain cooperate to limit the cylinder.

[0004] The welding positioner in the above-mentioned prior art can only realize the support and displacement of cylinders of the same size, but cannot realize the spatial posture adjustment of irregular cylinders with segmented different diameters, and ensure the uniqueness of the rotation axis of irregular cylinders with segmented different diameters. Summary of the invention

[0005] In order to solve the deficiencies of the above-mentioned prior art, the present invention provides an adaptive roller frame device for irregular cylinders with segmented different diameters, which can realize the spatial posture adjustment of the irregular cylinders with segmented different diameters, ensure the uniqueness of the rotation axis of the irregular cylinders with segmented different diameters, make the welding process smooth, and provide good working conditions for the welding of the cylinder annular seam.

[0006] The present invention is achieved through the following technical solutions: An adaptive roller frame device for irregular cylinders with different diameters in sections, characterized in that it includes a machine base, on which a driving roller group and a driven roller group are symmetrically arranged, and the driving rollers on the driving roller group are driven to rotate by a driving motor; the driving rollers at both ends of the driving roller group are used to support one end of the cylinder to be welded, and driven rollers are arranged at both ends of the driven roller group to support the other end of the cylinder to be welded; the spacing between the driving rollers at both ends of the driving roller group is adjustable to adapt to cylinders to be welded with different diameters, and the spacing between the driven rollers at both ends of the driven roller group is adjustable to adapt to cylinders to be welded with different diameters; a lifting assembly is arranged between the driven roller group and the machine base, and the lifting assembly is used to adjust the height of the driven roller group; the lifting assembly is slidably fitted on the machine base, and is driven by an axial adjustment assembly, so that the lifting assembly drives the driven roller group to move closer to or away from the driving roller group along the axial direction of the cylinder to be welded.

[0007] Furthermore, the spacing between the active rollers at both ends of the active roller group can be adjusted by the cooperation of the servo motor I and the screw nut pair. The ball screw I is rotatably arranged on the active roller group. The servo motor I drives the ball screw I to rotate. A connecting seat I that is threadedly matched with the ball screw I is arranged under the active roller. The ball screw I and the connecting seat I form the screw nut pair. The servo motor I drives the ball screw I to rotate, thereby driving the active rollers at both ends of the active roller group to move closer or farther away.

[0008] Furthermore, the spacing between the driven rollers at both ends of the driven roller group can be adjusted by the cooperation of the servo motor II and the screw nut pair. The ball screw II is rotatably arranged on the driven roller group. The servo motor II drives the ball screw II to rotate. A connecting seat II that cooperates with the thread of the ball screw II is arranged under the driven roller. The ball screw II and the connecting seat II form the screw nut pair. The servo motor II drives the ball screw II to rotate, thereby driving the driven rollers at both ends of the driven roller group to move closer or farther away.

[0009] Furthermore, the driven roller group includes a driven roller bracket, a scissors frame, and a skateboard. Slide rails I are arranged on both sides of the machine base. The two sides of the skateboard are correspondingly assembled in the slide rails I arranged on the machine base. The scissors frame has two arms hinged into an X shape. The top ends of the two arms are slidably connected to the driven roller bracket, and the bottom ends of the two arms are slidably connected to the skateboard.

[0010] Furthermore, the lifting assembly includes an adjusting motor and a turbine screw lift, the upper end of the screw of the turbine screw lift is connected to the driven roller bracket, and the lower end passes through a slide, the input end of one of the turbine screw lifts is connected to the adjusting motor, and the output end is connected to the input end of another turbine screw lift through a coupling and a connecting rod.

[0011] Furthermore, the axial adjustment component includes a servo motor III, a rack III and a gear III, the rack III is mounted on the machine base, the gear III and the servo motor III are mounted on the slide, and the output shaft of the servo motor III is connected to the gear III, driving the gear III to rotate reciprocatingly, and under the meshing action of its rack III, the driven roller group approaches or moves away from the active roller group.

[0012] Furthermore, it also includes a planetary reducer, the output shaft of the driving motor is connected to the input shaft of the planetary reducer, and the output shaft of the planetary reducer is connected to the active roller.

[0013] Furthermore, a synchronization mechanism is provided on one side of the driving roller group, including an external shaft, a synchronous belt, a connecting rod and a synchronous gear. The external shaft is connected to the input shaft of the driving motor, the output shaft of the driving motor is connected to one of the synchronous wheels of the synchronous belt, the other synchronous wheel is connected to the connecting rod, and synchronous gears are installed at both ends of the connecting rod. The synchronous gears at both ends are respectively connected to the input shafts of the corresponding planetary reducers, and the output shaft of the planetary reducer is connected to the driving roller.

[0014] Furthermore, it also includes a conductive brush, which is installed on one side of the driven roller group; the conductive brush is assembled from a copper block, a mounting base and a spring.

[0015] Furthermore, it also includes a stopper wheel assembly and a slide rail II horizontally arranged on the machine base on one side of the active roller assembly. A screw rod is arranged in the slide rail II, and a manual crank is connected to one end of the screw rod. A movable plate is installed under the stopper wheel assembly, and the movable plate is connected to the screw rod through a connecting block. The screw rod is driven to rotate by the manual crank so that the movable plate moves relative to the slide rail II.

[0016] The working principle of the present invention is as follows: The roller opening and closing devices on the active roller frame and the driven roller frame are activated to open and close the active roller and the driven roller to positions suitable for the front and rear ends of the irregular cylinder. The axial drive device on the driven roller frame drives the driven roller frame to move to a suitable position, and the lifting assembly lifts the driven roller frame to a suitable position, thereby ensuring the uniqueness of the rotation axis of the irregular cylinder with segmented different diameters.

[0017] The beneficial effects of the present invention are as follows: 1. In the present invention, the opening and closing between the two active rollers and the opening and closing between the two driven rollers, the left and right movement of the driven roller group, and the lifting and lowering of the driven roller group enable the posture adjustment of the active roller and the driven roller on the three coordinate axes in space, thereby ensuring the uniqueness of the rotation axis of the irregular cylinder with segmented different diameters, and the welding process is smooth, providing good working conditions for the welding of the cylinder annular seam.

[0018] 2. In the present invention, a synchronous mechanism is used to drive the active roller to ensure that the linear speed of the cylinder rolling matches the welding speed of the external welding equipment, which can reduce the slippage of the cylinder workpiece during the rotation process and reduce welding defects.

[0019] 3. In the present invention, a blocking wheel assembly is provided to prevent the cylinder from axial movement and rolling slippage when rolling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Side view; Figure 3 It is a schematic diagram of the structure of the driven roller frame; Figure 4 for Figure 3 Top view; Figure 5 It is a schematic diagram of the active roller frame structure.

[0021] Figure markings: 1-base, 2-driving roller group, 3-driven roller group, 4-driving roller, 5-driven roller, 6-driven roller bracket, 7-scissors frame, 8-slide plate, 9-slide rail I, 10-support arm, 11-adjusting motor, 12-turbine screw lifter, 13-coupling, 14-connecting rod, 15-connecting rod, 16-driving motor, 17-planetary reducer, 18-conductive brush, 19-blocking wheel assembly, 20-manual crank, 21-moving plate, 22-slide rail II, 23-gear III, 24-rack III, 25-servo motor III, 26-ball screw I, 27-connecting seat I, 28-ball screw II, 29-connecting seat II. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings of the present invention specification to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1 like Figure 1As shown, an adaptive roller frame device for irregular cylinders with segmented different diameters comprises a machine base 1, on which a driving roller group 2 and a driven roller group 3 are symmetrically arranged, and a driving motor 16 drives the driving roller 4 on the driving roller group 2 to rotate; the driving rollers 4 at both ends of the driving roller group 2 are used to support one end of the cylinder to be welded, and driven rollers 5 are arranged at both ends of the driven roller group 3 to support the other end of the cylinder to be welded; the spacing between the driving rollers 4 at both ends of the driving roller group 2 is adjustable to adapt to cylinders with different diameters to be welded, and the spacing between the driven rollers 5 at both ends of the driven roller group 3 is adjustable to adapt to cylinders with different diameters to be welded; a lifting assembly is arranged between the driven roller group 3 and the machine base 1, and the lifting assembly is used to adjust the height of the driven roller group 3; the lifting assembly is slidably fitted on the machine base 1, and is driven by the axial adjustment assembly, so that the lifting assembly drives the driven roller group 3 to move closer to or away from the driving roller group 2 along the axial direction of the cylinder to be welded.

[0024] During implementation, the opening and closing of the two active rollers 4 and the opening and closing of the two driven rollers 5, the left and right movement of the driven roller group 3, and the lifting and lowering of the driven roller group 3 enable the posture adjustment of the active roller 4 and the driven roller 5 on the three coordinate axes in space, ensuring the uniqueness of the rotation axis of the irregular cylinder with segmented different diameters, and the welding process is smooth, providing good working conditions for the welding of the cylinder annular seam.

[0025] Example 2 This embodiment further elaborates and supplements the implementation mode of the present invention on the basis of Embodiment 1.

[0026] As an implementation method of this embodiment, Figure 5 As shown, the spacing between the active rollers 4 at both ends of the active roller group 2 can be adjusted by the cooperation of the servo motor I and the screw nut pair. The ball screw I 26 is rotatably arranged on the active roller group 2. The servo motor I drives the ball screw I 26 to rotate. A connecting seat I 27 threadedly matched with the ball screw I 26 is arranged below the active roller 4. The ball screw I 26 and the connecting seat I 27 form the screw nut pair; the servo motor I drives the ball screw I 26 to rotate, thereby driving the active rollers 4 at both ends of the active roller group 4 to move closer or farther away.

[0027] As an example, the distance between the driving rollers 4 at both ends of the driving roller group 2 can be adjusted by the cooperation of the servo motor Ⅰ, the gear Ⅰ and the rack Ⅰ. The rack Ⅰ is mounted on the driving roller group 4. The driving rollers at both ends of the driving roller group 4 are equipped with servo motor Ⅰ and gear Ⅰ. The servo motor Ⅰ is connected to the gear Ⅰ to drive the gear Ⅰ to rotate. Under the meshing action of its rack Ⅰ, the driving rollers 4 at both ends approach or move away from each other.

[0028] As an implementation method of this embodiment, Figure 4As shown, the spacing between the driven rollers 5 at both ends of the driven roller group 3 can be adjusted by the cooperation of the servo motor II and the screw nut pair. The ball screw II 28 is rotatably arranged on the driven roller group 3. The servo motor II drives the ball screw II 28 to rotate. A connecting seat II 29 that is threadably matched with the ball screw II 28 is arranged below the driven roller. The ball screw II 28 and the connecting seat II 29 form the screw nut pair. The servo motor II drives the ball screw II 28 to rotate, thereby driving the driven rollers 3 at both ends of the driven roller group 3 to move closer or farther away.

[0029] As an example, the distance between the driven rollers 5 at both ends of the driven roller group 3 can also be adjusted by the cooperation of the servo motor II, gear I and rack I. The rack I is mounted on the driven roller group 3. The driven rollers 5 at both ends of the driven roller group 3 are equipped with servo motors I and gear I. The servo motor II is connected to the gear I to drive the gear I to rotate. Under the meshing action of its rack I, the driven rollers 5 at both ends approach or move away from each other.

[0030] Example 3 This embodiment further elaborates and supplements the implementation mode of the present invention on the basis of Embodiment 1 or Embodiment 2.

[0031] As an implementation method of this embodiment, Figure 3 As shown, the driven roller group 3 includes a driven roller bracket 6, a scissor frame 7, and a slide plate 8. Slide rails Ⅰ9 are arranged on both sides of the machine base 1. The two sides of the slide plate 8 are correspondingly assembled in the slide rails Ⅰ9 arranged on the machine base 1. The scissor frame 7 has two arms 10 hinged into an X shape. The top ends of the two arms 10 are slidably connected to the driven roller bracket 6, and the bottom ends of the two arms 10 are slidably connected to the slide plate 8.

[0032] As an implementation method of this embodiment, Figure 3 As shown, the lifting assembly includes an adjusting motor 11 and a worm screw lift 12, the upper end of the screw of the worm screw lift 12 is connected to the driven roller bracket 6, and the lower end passes through the slide 8, the input end of one of the worm screw lifts 12 is connected to the adjusting motor 11, and the output end is connected to the input end of the other worm screw lift 12 through a coupling 13 and a connecting rod 14.

[0033] During implementation, the adjusting motor 11 is started to drive one of the turbine screw lifts 12 to rise and fall, and is connected to the other turbine screw lift 12 through the coupling 13 and the connecting rod 14, so that the two turbine screw lifts 12 are raised and lowered synchronously; when the turbine screw lifts 12 at both ends of the slide 8 rise, the top ends of the two hinged support arms 10 approach each other, and the bottom ends also approach each other, thereby realizing the rise of the driven roller bracket 6; when descending, the top ends of the two hinged support arms 10 move away from each other, and the bottom ends also move away from each other, thereby realizing the descent of the driven roller bracket 6.

[0034] As an example, the lifting assembly includes an adjusting motor 11, gear II and rack II, rack II is mounted on the driven roller bracket 6, and the top of the two arms 10 are equipped with an adjusting motor 11 and gear II. The adjusting motor 11 is connected to gear II to drive gear II to rotate. Under the meshing action of its rack II, the tops of the two arms 10 approach or move away. When approaching, the bottom ends of the two arms 10 also approach each other, thereby realizing the rising of the driven roller bracket 6; when moving away, the bottom ends of the two arms 10 also move away from each other, thereby realizing the descending of the driven roller bracket 6.

[0035] As another implementation method of this embodiment, Figure 2 As shown, the axial adjustment assembly includes a servo motor III25, a rack III24 and a gear III23. The rack III24 is mounted on the machine base 1, and the gear III23 and the servo motor III25 are mounted on the slide 8. The output shaft of the servo motor III25 is connected to the gear III23, driving the gear III23 to reciprocate. Under the meshing action of its rack III24, the driven roller group 3 approaches or moves away from the active roller group 2 along the axial direction of the cylinder to be welded.

[0036] As an example, the axial adjustment assembly includes a servo motor III 25 and a nut-screw pair. The screw is rotatably assembled on the machine base 1 along the axial direction of the cylinder to be welded. A connecting seat that cooperates with the screw thread is provided at the bottom of the slide plate 8. The screw and the connecting seat form the screw-nut pair. The servo motor III 25 drives the screw to rotate reciprocatingly, thereby driving the slide plate to move reciprocatingly along the screw, and the driven roller group 3 approaches or moves away from the active roller group 2 along the axial direction of the cylinder to be welded.

[0037] Example 4 This embodiment further elaborates and supplements the implementation manner of the present invention on the basis of Embodiment 1, Embodiment 2 or Embodiment 3.

[0038] As an implementation of this embodiment, a planetary reducer 17 is further included, the output shaft of the driving motor 16 is connected to the input shaft of the planetary reducer 17, and the output shaft of the planetary reducer 17 is connected to the active roller 4. In this embodiment, the driving motor is a servo motor IV.

[0039] As another implementation method of this embodiment, Figure 5As shown, a synchronous mechanism is provided on one side of the active roller group 2, including an external shaft, a synchronous belt, a connecting rod 15 and a synchronous gear. The external shaft is connected to the input shaft of the driving motor 16, the output shaft of the driving motor 16 is connected to one of the synchronous wheels of the synchronous belt, and the other synchronous wheel is connected to the connecting rod 15. Synchronous gears are installed at both ends of the connecting rod 15. The synchronous gears at both ends are respectively connected to the input shafts of the corresponding planetary reducer 17, and the output shaft of the planetary reducer 17 is connected to the active roller 4. The synchronous mechanism is used to drive the active roller 4 to ensure that the linear speed of the cylinder rolling matches the welding speed of the external welding equipment, which can reduce the slippage of the cylinder workpiece during the rotation process and reduce welding defects.

[0040] In this embodiment, the external shaft is an external welding device of the cylinder to be welded, which ensures that the linear speed of the rolling of the cylinder to be welded matches the welding speed of the external welding device.

[0041] During implementation, the drive motor 16 can be connected to a control cabinet that controls the welding equipment. The control cabinet simultaneously controls the welding equipment and the drive motor 16 to ensure that the linear speed of the cylinder rolling matches the welding speed of the external welding equipment, thereby reducing slippage of the cylinder workpiece during rotation and reducing welding defects.

[0042] As another implementation of this embodiment, it also includes a conductive brush 18, which is installed on one side of the driven roller group 3; the conductive brush 18 is assembled from a copper block, a mounting base and a spring.

[0043] As another implementation method of this embodiment, Figure 1 As shown, it also includes a stopper wheel assembly 19 and a slide rail II 22 transversely arranged on the machine base 1 on one side of the active roller assembly 2. A screw rod is arranged in the slide rail II 22, and a manual crank 20 is connected to one end of the screw rod. A moving plate 21 is installed below the stopper wheel assembly 19. The moving plate 21 is connected to the screw rod through a connecting block. The screw rod is driven to rotate by the manual crank 20 so that the moving plate 21 moves relative to the slide rail II 22. In practice, the stopper wheel assembly 19 is used as the axial positioning reference of the workpiece. The position of the stopper wheel assembly 19 is adjusted by the manual crank 20, so that the workpiece has a tendency to move unidirectionally toward the end stopper wheel assembly and is blocked, thereby preventing the workpiece from axial movement.

Claims

1. An adaptive roller stand device for irregular cylinders with segmented different diameters, characterized in that: The invention comprises a machine base (1), on which a driving roller group (2) and a driven roller group (3) are symmetrically arranged, and a driving motor (16) drives a driving roller (4) on the driving roller group (2) to rotate; the driving rollers (4) at both ends of the driving roller group (2) are used to support one end of a cylinder to be welded, and driven rollers (5) are arranged at both ends of the driven roller group (3) to support the other end of the cylinder to be welded; the spacing between the driving rollers (4) at both ends of the driving roller group (2) is adjustable to adapt to different For cylinders to be welded of the same diameter, the spacing between the driven rollers (5) at both ends of the driven roller group (3) is adjustable to accommodate cylinders to be welded of different diameters; a lifting assembly is provided between the driven roller group (3) and the machine base (1), the lifting assembly being used to adjust the height of the driven roller group (3); the lifting assembly is slidably engaged on the machine base (1) and driven by the axial adjustment assembly, so that the lifting assembly drives the driven roller group (3) to move closer to or away from the driving roller group (2) along the axial direction of the cylinder to be welded.

2. The adaptive roller stand device for irregular cylinders with segmented different diameters according to claim 1, characterized in that: The spacing between the active rollers (4) at both ends of the active roller group (2) can be adjusted by the cooperation of a servo motor I and a screw nut pair. A ball screw I (26) is rotatably arranged on the active roller group (2). The servo motor I drives the ball screw I (26) to rotate. A connecting seat I (27) threadedly engaged with the ball screw I (26) is arranged below the active roller (4). The ball screw I (26) and the connecting seat I (27) form the screw nut pair. The servo motor I drives the ball screw I (26) to rotate, thereby driving the active rollers (4) at both ends of the active roller group (4) to move closer or farther away.

3. The adaptive roller stand device for irregular cylinders with segmented different diameters according to claim 1, characterized in that: The spacing between the driven rollers (5) at both ends of the driven roller group (3) can be adjusted by the cooperation of the servo motor II and the screw nut pair. The ball screw II (28) is rotatably arranged on the driven roller group (3). The servo motor II drives the ball screw II (28) to rotate. A connecting seat II (29) threadedly engaged with the ball screw II (28) is arranged below the driven roller (5). The ball screw II (28) and the connecting seat II (29) form the screw nut pair. The servo motor II drives the ball screw II (28) to rotate, thereby driving the driven rollers (5) at both ends of the driven roller group (3) to move closer or farther away.

4. An adaptive roller stand device for irregular cylinders with segmented varying diameters as claimed in any one of claims 1 to 3, characterized in that: The driven roller assembly (3) comprises a driven roller bracket (6), a scissor frame (7), and a slide plate (8). Slide rails I (9) are arranged on both sides of the machine base (1). The two sides of the slide plate (8) are correspondingly mounted in the slide rails I (9) arranged on the machine base (1). The scissor frame (7) has two support arms (10) hinged into an X shape. The top ends of the two support arms (10) are slidably connected to the driven roller bracket (6), and the bottom ends of the two support arms (10) are slidably connected to the slide plate (8).

5. The adaptive roller stand device for irregular cylinders with segmented different diameters as claimed in claim 4, characterized in that: The lifting assembly comprises an adjusting motor (11) and a worm screw lift (12); the upper end of the screw of the worm screw lift (12) is connected to a driven roller bracket (6), and the lower end passes through a slide plate (8); the input end of one worm screw lift (12) is connected to the adjusting motor (11), and the output end is connected to the input end of another worm screw lift (12) via a coupling (13) and a connecting rod (14).

6. The adaptive roller stand device for irregular cylinders with segmented different diameters as claimed in claim 4, characterized in that: The axial adjustment assembly comprises a servo motor III (25), a rack III (24) and a gear III (23); the rack III (24) is mounted on the machine base (1); the gear III (23) and the servo motor III (25) are mounted on the slide plate (8); and the output shaft of the servo motor III (25) is connected to the gear III (23) to drive the gear III (23) to reciprocate, and under the meshing action of the rack III (24), the driven roller group (3) moves closer to or farther from the driving roller group (2).

7. The self-adaptive roller stand device for irregular cylinders with segmented different diameters as claimed in claim 4, characterized in that: It also includes a planetary reducer (17), wherein the output shaft of the drive motor (16) is connected to the input shaft of the planetary reducer (17), and the output shaft of the planetary reducer (17) is connected to the driving roller (4).

8. The self-adaptive roller stand device for irregular cylinders with segmented different diameters as claimed in claim 7, characterized in that: A synchronous mechanism is provided on one side of the driving roller group (2), comprising an external shaft, a synchronous belt, a connecting rod (15) and a synchronous gear. The external shaft is connected to the input shaft of a driving motor (16). The output shaft of the driving motor (16) is connected to one of the synchronous wheels of the synchronous belt. The other synchronous wheel is connected to the connecting rod (15). Synchronous gears are mounted on both ends of the connecting rod (15). The synchronous gears at both ends are respectively connected to the input shafts of corresponding planetary reducers (17). The output shaft of the planetary reducer (17) is connected to the driving roller (4).

9. The adaptive roller stand device for irregular cylinders with segmented different diameters as claimed in claim 4, characterized in that: It also includes a conductive brush (18), which is mounted on one side of the driven roller assembly (3); the conductive brush (18) is assembled from a copper block, a mounting base and a spring.

10. The self-adaptive roller stand device for irregular cylinders with segmented different diameters as claimed in claim 4, characterized in that: The invention also comprises a stopper wheel assembly (19) and a slide rail II (22) disposed transversely on the machine base (1) at one side of the active roller assembly (2). A lead screw is disposed in the slide rail II (22), one end of which is connected to a manual crank (20). A movable plate (21) is arranged below the stopper wheel assembly (19). The movable plate (21) is connected to the lead screw via a connecting block. The lead screw is driven to rotate by the manual crank (20) so that the movable plate (21) moves relative to the slide rail II (22).

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