A shaft puller applied to a reel paper machine

Abstract

The utility model relates to mechanical structure and mechanical analysis technical field disclose a kind of puller applied to paper roll paper machine, including a kind of puller applied to paper roll paper machine, including bottom plate, the top of bottom plate is equipped with lifting mechanism, the top of lifting mechanism is fixedly connected with baffle one, the top of lifting mechanism is fixedly connected with baffle two, the outside fixed connection of baffle one has slide rail, the outside sliding connection of slide rail has motor, the drive end fixed connection of motor has threaded rod, the outside of threaded rod is equipped with clamping mechanism, the outside of threaded rod is equipped with puller mechanism, the outside screw connection of threaded rod has blocking block. Through the drive of motor, clamping mechanism can be clamped to different size paper roll, realizes the accurate positioning of puller to paper roll, and the puller mechanism in puller can accurately enter the axis and carry out puller operation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical structure and mechanical analysis technology, and in particular to a shaft puller applied to a paper roll making machine. Background Technology

[0002] In the equipment maintenance system of the papermaking industry, the roller removal operation plays a crucial role in maintaining the stable operation of the production system. When critical rollers in papermaking machinery need to be repaired or replaced, this seemingly simple disassembly process is actually related to the operational efficiency of the entire production line. Traditional disassembly methods that rely on brute force often result in hidden damage to metal parts. These minor defects can gradually amplify during subsequent operation, eventually evolving into fatal factors affecting paper quality. In contrast, a standardized roller removal operation achieves precise separation while protecting the integrity of components through a scientific force transmission mechanism. This process reflects the modern papermaking industry's profound understanding of the entire lifecycle management of equipment.

[0003] In the papermaking industry, the use of roller pullers plays a crucial role in ensuring stable and continuous production. When core components of a paper machine, such as drying cylinders and calendering rolls, wear down due to long-term operation or require upgrades, traditional manual disassembly methods are not only inefficient but can also cause irreversible damage to precision shafts and bearing housings, leading to a chain reaction of equipment precision degradation. Roller pullers achieve controlled axial tension through mechanical or hydraulic means, using precise mechanical distribution to achieve non-destructive separation of interference-fit components. This process protects the high-value surface finish of the rolls and avoids secondary repair costs caused by rough handling.

[0004] In the field of papermaking machinery maintenance, some roll pullers often cause a chain of technical problems in actual operation due to the lack of a specific design for the clamping and positioning of the paper roll. When operators disassemble the drying cylinder or calendering roll, the unrestrained paper roll will undergo irregular displacement due to mechanical vibration. This dynamic interference not only causes the axis of force application of the roll puller to deviate, but may also cause scratches on the mating surfaces of precision bearing seats. In the operation and maintenance scenario of high-speed paper machines, such minor damage will be amplified geometrically through the continuous operation of the production line, eventually manifesting as periodic streaks or uneven basis weight on the paper surface. To address these issues, a roll puller for roll papermaking machines is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a shaft puller for use in a roll paper making machine. It aims to improve the problem that when operators disassemble the drying cylinder or calendering roller, the unrestrained roll paper will undergo irregular displacement due to mechanical vibration. This dynamic interference not only causes the shaft pulling force axis to deviate, but also causes scratches on the mating surfaces of precision bearing seats.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A shaft puller for use in a roll paper making machine includes a base plate, a lifting mechanism mounted on the top of the base plate, a baffle plate 1 fixedly connected to the top of the lifting mechanism, a baffle plate 2 fixedly connected to the top of the lifting mechanism, a slide rail fixedly connected to the outside of the baffle plate 1, a motor slidably connected to the outside of the slide rail, a threaded rod fixedly connected to the drive end of the motor, a clamping mechanism mounted on the outside of the threaded rod, a shaft pulling mechanism mounted on the outside of the threaded rod, a blocking block threadedly connected to the outside of the threaded rod, and casters mounted on the bottom of the base plate. The clamping mechanism includes a housing, a grooved plate is fixedly connected to the housing, and a sliding component is installed on the outside of the grooved plate; As a further description of the above technical solution: The sliding assembly includes a gear, an inner half rack slidably connected to the outside of the gear, an outer half rack slidably connected to the outside of the gear, a bolt two connected to the inner thread of the outer half rack, a nut connected to the outer thread of the bolt two, and a clamping arm connected to the other end of the bolt two. As a further description of the above technical solution: The lifting mechanism includes a fixed block 1, an X-shaped cross arm rotatably connected inside the fixed block 1, a fixed block 2 rotatably connected outside the X-shaped cross arm, a support plate fixedly connected to the top of the fixed block 2, a connecting column 1 fixedly connected to the outside of the X-shaped cross arm, a connecting column 2 fixedly connected to the outside of the X-shaped cross arm, and a hydraulic assembly installed outside the connecting column 1. As a further description of the above technical solution: The hydraulic assembly includes a clamping plate, a fixing column fixedly connected to the outside of the clamping plate, a hydraulic cylinder rotatably connected to the outside of the fixing column, a hydraulic rod slidably connected inside the hydraulic cylinder, a buckle fixedly connected to one end of the hydraulic rod, and a bolt threadedly connected to the inside of the buckle. As a further description of the above technical solution: The shaft pulling mechanism includes a sliding cylinder, a base plate is fixedly connected to the outside of the sliding cylinder, a positioning component is installed on the outside of the sliding cylinder, the positioning component includes an expansion claw, a rotating rod is rotatably connected to the bottom of the expansion claw, and a bolt is slidably connected inside the rotating rod; As a further description of the above technical solution: The gear is internally fixedly connected to the outside of the threaded rod, the bolt is slidably connected to the inside of the groove plate, the outside of the gear is meshed with the outside of the outer half rack, and the outside of the gear is meshed with the outside of the inner half rack. As a further description of the above technical solution: The bottom of the first fixing block is fixedly connected to the top of the base plate, the bottom of the first baffle is installed on the top of the support plate, the bottom of the second baffle is fixedly installed on the top of the support plate, the bottom of the clamp is fixedly connected to the top of the base plate, and the inside of the buckle is slidably connected to the outside of the first connecting post. As a further description of the above technical solution: The internal thread of the sliding cylinder is connected to the outside of the threaded rod, the external thread of the bolt three is connected to the inside of the sliding cylinder, the external thread of the bolt three is connected to the inside of the expansion claw, and the external sliding connection of the expansion claw is to the inside of the base plate.

[0007] This utility model has the following beneficial effects: 1. In this utility model, when the motor is turned on, the gear in the sliding component of the clamping mechanism begins to rotate with the external rotation of the threaded rod. Since the gear is meshed with the inner and outer half racks, the inner and outer half racks will extend or retract due to the rotation of the gear, thereby driving the clamping arm connected to the bolts on the half racks. This achieves precise positioning of the paper roll by the shaft puller, making it easy for the shaft pulling mechanism inside the shaft puller to accurately enter the shaft center for shaft pulling operation.

[0008] 2. In this utility model, the lifting mechanism is driven by a motor, and the hydraulic components in the mechanism start to work. The hydraulic rod in the hydraulic cylinder extends or retracts outward, pushing the connecting column one, thereby deforming the X-shaped cross arm and affecting the height of the lifting mechanism. This enables the shaft puller to adjust its height when facing paper rolls of different heights through the lifting mechanism, thus providing greater adaptability to work requirements. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a shaft puller for use in a roll paper making machine, as proposed in this utility model. Figure 2 This is a schematic diagram of the structure of a motor for a shaft puller used in a roll paper making machine, as proposed in this utility model. Figure 3 This is a schematic diagram of the structure of a gear for a shaft puller used in a roll paper making machine, as proposed in this utility model. Figure 4 for Figure 2 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of point B in the middle; Legend: Base plate; 2. Lifting mechanism; 21. Fixed block one; 22. Hydraulic assembly; 23. X-shaped cross arm; 24. Fixed block two; 25. Support plate; 26. Connecting column one; 27. Connecting column two; 221. Clamping plate; 222. Fixing post; 223. Hydraulic cylinder; 224. Hydraulic rod; 225. Buckle; 226. Bolt 1; 3. Slide rail; 4. Baffle 1; 5. Baffle 2; 6. Motor; 7. Clamping mechanism; 71. Housing; 72. Groove plate; 73. Sliding assembly; 731. Gear; 732. Internal rack; 733. External rack; 734. Two bolts; 735. Nut; 736. Clamping arm; 8. Shaft pulling mechanism; 81. Sliding cylinder; 82. Base plate; 83. Positioning assembly; 831. Expanding claw; 832. Rotating rod; 833. Bolt three; 9. Threaded rod; 10. Stopping block; 11. Caster wheel. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0011] A shaft puller for use in a roll paper making machine, referenced Figure 1 , Figure 3 and Figure 5The system includes a base plate 1, which supports and loads other components. A lifting mechanism 2 is mounted on the top of the base plate 1, providing height adjustment for the shaft puller. A first baffle 4 and a second baffle 5 are fixedly connected to the top of the lifting mechanism 2, used to clamp other components. A slide rail 3 is fixedly connected to the outside of the first baffle 4, providing a sliding track for other components. A motor 6 is slidably connected to the outside of the slide rail 3, providing power to the other components. The motor 6 drives... A threaded rod 9 is fixedly connected to the end, which is used to extend the length of the drive end and form a threaded connection with other components. A clamping mechanism 7 is installed on the outside of the threaded rod 9, which is used to clamp the paper roll and achieve precise positioning. A shaft pulling mechanism 8 is installed on the outside of the threaded rod 9, which is used to pull out the roller shaft inside the paper roll. A blocking block 10 is threadedly connected to the outside of the threaded rod 9, which is used to prevent other components on the drive end of the motor 6 from falling off. A universal wheel 11 is installed at the bottom of the base plate 1, which is used to move the shaft puller. The clamping mechanism 7 includes a housing 71, which provides protection for other components of the clamping mechanism 7. A grooved plate 72 is fixedly connected to the housing 71, providing support for other components and also offering sliding grooves for them. A sliding assembly 73 is mounted on the outside of the grooved plate 72, which drives other components through sliding. The sliding assembly 73 includes a gear 731, which transmits force and energy through meshing. An internal half-rack 73 is slidably connected to the outside of the gear 731. 2. The gear 731 is externally slidably connected to an outer half rack 733. Both the inner half rack 732 and the outer half rack 733 are used to form a meshing connection with the gear 731. When the gear 731 is under force and slides, the outer half rack 733 is internally threaded with a bolt 734. The bolt 734 is used to fix other components. The bolt 734 is externally threaded with a nut 735. The nut 735 is used to limit the movement of the bolt 734. The other end of the bolt 734 is threaded with a clamping arm 736. The clamping arm 736 is used to clamp the paper roll.

[0012] The gear 731 is internally fixedly connected to the outside of the threaded rod 9, and the bolt 734 is slidably connected to the inside of the groove plate 72. The outside of the gear 731 is meshed with the outside of the outer half rack 733, and the outside of the gear 731 is meshed with the outside of the inner half rack 732.

[0013] Specifically, when the motor 6 is turned on, the gear 731 in the sliding assembly 73 of the clamping mechanism 7 begins to rotate with the threaded rod 9. Since the gear 731 is meshed with the inner half rack 732 and the outer half rack 733, the inner half rack 732 and the outer half rack 733 will extend or retract due to the rotation of the gear 731, thereby driving the clamping arm 736 connected to the bolt 734 on the half rack.

[0014] Reference Figure 1 and Figure 2 The lifting mechanism 2 includes a first fixed block 21, which provides support for other components. An X-shaped cross arm 23 is rotatably connected inside the first fixed block 21. The X-shaped cross arm 23 affects the height of the lifting mechanism 2 through deformation. A second fixed block 24 is rotatably connected outside the X-shaped cross arm 23. The second fixed block 24 is used to fix the X-shaped cross arm 23. A support plate 25 is fixedly connected to the top of the second fixed block 24. The support plate 25 is used to fix the position of the second fixed block 24 and provide support for other components. A first connecting column 26 is fixedly connected outside the X-shaped cross arm 23. The first connecting column 26 is used to bear the stress point and make the structure of the lifting mechanism 2 more stable. A second connecting column 27 is fixedly connected outside the X-shaped cross arm 23. The second connecting column 27 makes the structure of the lifting mechanism 2 more stable. A hydraulic component 22 is installed outside the first connecting column 26. The hydraulic component 22 provides force to drive the X-shaped cross arm 23 to deform.

[0015] The hydraulic assembly 22 includes a clamping plate 221, which restricts the position of other components and prevents them from shifting due to other factors. A fixing post 222 is fixedly connected to the outside of the clamping plate 221. The fixing post 222 provides support for other components, allowing them to rotate. A hydraulic cylinder 223 is rotatably connected to the outside of the fixing post 222. The hydraulic cylinder 223 controls and outputs power. A hydraulic rod 224 is slidably connected inside the hydraulic cylinder 223. The hydraulic rod 224 acts as a force transmission hub, transmitting the power output by the hydraulic cylinder 223 to other components. A buckle 225 is fixedly connected to one end of the hydraulic rod 224. The buckle 225 connects the hydraulic rod 224 to a connecting post 26. A bolt 226 is threaded inside the buckle 225 to tightly engage the buckle 225 and prevent it from falling off.

[0016] The bottom of the fixing block 1 21 is fixedly connected to the top of the base plate 1, the bottom of the baffle 1 4 is installed on the top of the support plate 25, the bottom of the baffle 2 5 is fixedly installed on the top of the support plate 25, the bottom of the clamp 221 is fixedly connected to the top of the base plate 1, and the inside of the buckle 225 is slidably connected to the outside of the connecting column 1 26.

[0017] Specifically, driven by the motor 6, the hydraulic component 22 in the lifting mechanism 2 starts to work, and the hydraulic rod 224 in the hydraulic cylinder 223 extends or retracts outward, pushing the connecting column 26, thereby deforming the X-shaped cross arm 23, thus affecting the height of the lifting mechanism 2 and realizing the height adjustment of the shaft puller.

[0018] Reference Figure 2 and Figure 4 The shaft pulling mechanism 8 includes a sliding cylinder 81 and a base plate 82. The sliding cylinder 81 serves as the main body of the shaft pulling mechanism 8, driving other components through sliding and providing support for the connection of other components. The base plate 82 restricts the movement of other components. A positioning component 83 is installed on the outside of the sliding cylinder 81. The positioning component 83 is used to position the force point by engaging the groove inside the roller shaft, and then the roller shaft is pulled out by the movement of the sliding cylinder 81. The positioning component 83 includes an expansion claw 831, which engages the groove inside the roller shaft through a hook-shaped structure. A rotating rod 832 is rotatably connected to the bottom of the expansion claw 831. The rotating rod 832 is used to slide in the sliding cylinder 81 and transmit force to the expansion claw 831 in a rotating form, thereby forming the movement trajectory of the expansion claw 831 expanding outward or contracting inward. A bolt 833 is slidably connected inside the rotating rod 832. The bolt 833 is used to connect the rotating rod 832 to the expansion claw 831 and the sliding cylinder 81.

[0019] The sliding cylinder 81 is internally slidably connected to the outside of the threaded rod 9. The external thread of bolt 3 833 is externally threaded to the inside of the sliding cylinder 81. The external thread of bolt 3 833 is externally threaded to the inside of the expansion claw 831. The outside of the expansion claw 831 is externally slidably connected to the inside of the base plate 82.

[0020] Specifically, the sliding cylinder 81 slides forward due to the rotation of the threaded rod 9. Because the bottom plate 82 restricts the movement of the expansion claw 831, the rotating rod 832 starts to rotate, and the expansion claw 831 retracts inward. When the shaft pulling mechanism 8 enters the roller shaft, the drive end of the motor 6 starts to drive in the opposite direction, causing the sliding cylinder 81 to move backward and the expansion claw 831 to expand outward until the expansion claw 831 catches the groove in the roller shaft. At the same time, the sliding of the sliding cylinder 81 will also drive the roller shaft to be pulled out.

[0021] The implementation principle of this application embodiment is as follows: The operator pushes the shaft puller to the designated working position using the universal wheel 11, and then drives the lifting mechanism 2 via the motor 6, causing the internal hydraulic component 22 to start working. The hydraulic rod 224 in the hydraulic cylinder 223 extends or retracts outward, pushing the connecting column 26, thereby deforming the X-shaped cross arm 23, thus affecting the height of the lifting mechanism 2 and realizing the height adjustment of the shaft puller. Subsequently, the gear 731 in the sliding component 73 of the clamping mechanism 7 begins to rotate externally following the threaded rod 9. Since the gear 731 is meshed with the inner half rack 732 and the outer half rack 733, both the inner half rack 732 and the outer half rack 733 will extend due to the rotation of the gear 731. The contraction or retraction movement drives the clamping arm 736, which is connected to the bolt 734 on the half rack, to clamp the paper roll by extending outward and then retracting inward. This provides precise positioning for the subsequent operation of the shaft pulling mechanism 8. Finally, due to the rotation of the threaded rod 9, the sliding cylinder 81 slides forward. Because the bottom plate 82 restricts the movement of the expansion claw 831, the rotating rod 832 starts to rotate, and the expansion claw 831 retracts inward. When the shaft pulling mechanism 8 enters the roller, the drive end of the motor 6 starts to drive in the opposite direction, causing the sliding cylinder 81 to move backward and the expansion claw 831 to expand outward until the expansion claw 831 catches the groove in the roller. At the same time, the sliding of the sliding cylinder 81 will also drive the roller to be pulled out.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shaft puller for use in a paper roll making machine, comprising a base plate (1), characterized in that: A lifting mechanism (2) is installed on the top of the base plate (1). A baffle (4) is fixedly connected to the top of the lifting mechanism (2). A baffle (5) is fixedly connected to the top of the lifting mechanism (2). A slide rail (3) is fixedly connected to the outside of the baffle (4). A motor (6) is slidably connected to the outside of the slide rail (3). A threaded rod (9) is fixedly connected to the drive end of the motor (6). A clamping mechanism (7) is installed on the outside of the threaded rod (9). A shaft pulling mechanism (8) is installed on the outside of the threaded rod (9). A blocking block (10) is threadedly connected to the outside of the threaded rod (9). A caster wheel (11) is installed at the bottom of the base plate (1). The clamping mechanism (7) includes a housing (71), a grooved plate (72) is fixedly connected to the housing (71), and a sliding component (73) is installed on the outside of the grooved plate (72).

2. The shaft puller for a paper roll making machine according to claim 1, characterized in that: The sliding assembly (73) includes a gear (731), an inner half rack (732) is slidably connected to the outside of the gear (731), an outer half rack (733) is slidably connected to the outside of the gear (731), a bolt (734) is threadedly connected to the inside of the outer half rack (733), a nut (735) is threadedly connected to the outside of the bolt (734), and a clamping arm (736) is threadedly connected to the other end of the bolt (734).

3. The shaft puller for use in a paper roll making machine according to claim 1, characterized in that: The lifting mechanism (2) includes a fixed block one (21), an X-shaped cross arm (23) is rotatably connected inside the fixed block one (21), a fixed block two (24) is rotatably connected outside the X-shaped cross arm (23), a support plate (25) is fixedly connected to the top of the fixed block two (24), a connecting column one (26) is fixedly connected to the outside of the X-shaped cross arm (23), a connecting column two (27) is fixedly connected to the outside of the X-shaped cross arm (23), and a hydraulic component (22) is installed on the outside of the connecting column one (26).

4. A shaft puller for use in a paper roll making machine according to claim 3, characterized in that: The hydraulic assembly (22) includes a clamping plate (221), a fixing column (222) is fixedly connected to the outside of the clamping plate (221), a hydraulic cylinder (223) is rotatably connected to the outside of the fixing column (222), a hydraulic rod (224) is slidably connected inside the hydraulic cylinder (223), a buckle (225) is fixedly connected to one end of the hydraulic rod (224), and a bolt (226) is threadedly connected inside the buckle (225).

5. A shaft puller for use in a paper roll making machine according to claim 1, characterized in that: The shaft pulling mechanism (8) includes a sliding cylinder (81), a base plate (82) is fixedly connected to the outside of the sliding cylinder (81), a positioning component (83) is installed on the outside of the sliding cylinder (81), the positioning component (83) includes an expansion claw (831), a rotating rod (832) is rotatably connected to the bottom of the expansion claw (831), and a bolt (833) is slidably connected inside the rotating rod (832).

6. A shaft puller for use in a paper roll making machine according to claim 2, characterized in that: The gear (731) is internally fixedly connected to the outside of the threaded rod (9), and the bolt (734) is slidably connected to the inside of the groove plate (72). The outside of the gear (731) is meshed with the outside of the outer half rack (733), and the outside of the gear (731) is meshed with the outside of the inner half rack (732).

7. A shaft puller for use in a paper roll making machine according to claim 4, characterized in that: The bottom of the fixing block one (21) is fixedly connected to the top of the base plate (1), the bottom of the baffle one (4) is installed on the top of the support plate (25), the bottom of the baffle two (5) is fixedly installed on the top of the support plate (25), the bottom of the clamp (221) is fixedly connected to the top of the base plate (1), and the inside of the buckle (225) is slidably connected to the outside of the connecting column one (26).

8. A shaft puller for use in a paper roll making machine according to claim 5, characterized in that: The internal thread of the sliding cylinder (81) is connected to the outside of the threaded rod (9), the external thread of the bolt three (833) is connected to the inside of the sliding cylinder (81), the external thread of the bolt three (833) is connected to the inside of the expansion claw (831), and the external sliding connection of the expansion claw (831) is connected to the inside of the base plate (82).

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