A raw paper slitting machine for paper tube production
By combining a limiting mechanism and a laser rangefinder, the problem of offset during the paper feeding process is solved, achieving precise paper feeding and slitting accuracy, and ensuring the accuracy of rewinding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MEIZHONG PAPER TUBE TECH (SUZHOU) CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-08-04
AI Technical Summary
In the current paper tube production process, the lack of limiters during the raw paper feeding process causes deviation, affecting the slitting accuracy and winding effect.
The system employs a limiting mechanism, including a limiting frame, a rotating shaft, a rotating handle, a fixed shaft, and limiting wheels. The spacing between the limiting frames is adjusted via a screw mechanism, and a torsion spring provides reverse support. Combined with a laser rangefinder sensor, the limiting is precisely controlled to ensure that the paper is conveyed in a taut state.
It achieves precise positioning and conveying of base paper of different widths, avoids offset, and improves slitting accuracy and winding effect.
Smart Images
Figure CN224590355U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of paper tube production technology, specifically to a paper slitting machine for paper tube production. Background Technology
[0002] Paper tubes are hollow cylinders made from paper. Their applications span dozens of industrial fields, including chemical fibers, films, printing, textiles, packaging, and construction, and extend to everyday life scenarios such as medical care, art, and logistics. The raw paper slitting machine is the first process equipment in the paper tube production line. Its main function is to cut wide rolls of paper (such as kraft paper, tea board paper, etc.) into narrow strips according to a set width, providing standard-sized raw materials for subsequent spiral or parallel tube winding.
[0003] In the prior art, the patent with authorization publication number CN215710528U discloses a paper slitting machine for paper tube production. However, it has some problems in actual use, such as the lack of limiters during the paper feeding process, which may cause deviation during the paper feeding process, thus affecting the slitting accuracy of the paper and the winding effect of the paper. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a raw paper slitting machine for paper tube production, which can limit the movement of raw paper of different widths and achieve precise delivery of raw paper while ensuring that the raw paper is in a taut state. This can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a raw paper slitting machine for paper tube production, comprising a raw paper slitting table, a symmetrically distributed support frame fixedly connected to the front end of the upper surface of the raw paper slitting table, a slitting roller provided at the rear end between the two support frames, and slitting blades evenly distributed on the outer surface of the slitting roller, and also including a limiting mechanism. The limiting mechanism includes a limiting frame, a rotating shaft, a rotating handle, a fixed shaft, and limiting wheels. The limiting frames are symmetrically arranged inside between two support frames. The upper end of each limiting frame is rotatably connected to a rotating shaft. The outer surface of each rotating shaft is rotatably connected to a rotating handle near the center of the paper slitting table. The rotating handle is fixedly connected to a fixed shaft on the side surface near the center of the paper slitting table. The outer surface of each fixed shaft is rotatably connected to a limiting wheel.
[0006] Furthermore, the limiting mechanism also includes a torsion spring one, a limiting disc, and a torsion spring two. The torsion spring one is fixedly connected between two rotating handles located on the outer surface of the same rotating shaft. The torsion spring one is movably sleeved on the outer surface of adjacent rotating shafts. The two rotating shafts are fixedly connected to the limiting discs on opposite outer surfaces. The torsion spring two is provided between the limiting disc and the adjacent limiting frame. The torsion spring two is movably sleeved on the outer surface of adjacent rotating shafts to provide driving force for the reset of the limiting wheel.
[0007] Furthermore, the front end of the upper surface of the paper slitting table is fixedly connected to symmetrically distributed fixed seats, and the rear end of the two fixed seats is rotatably connected to a bidirectional screw. The front ends of the two limit frames are threadedly connected to the outer surface of the bidirectional screw. The left end of the bidirectional screw extends to the left side of the left fixed seat. A drive handwheel is fixedly connected to the left end of the bidirectional screw. A guide rod is fixedly connected to the front end of the two fixed seats. The front ends of the two limit frames are slidably connected to the outer surface of the guide rod. Corrugated tubes are provided between the rear ends of the relative inner surfaces of the two limit frames, between the right side surface of the left fixed seat and the left side surface of the left limit frame, and between the left side surface of the right fixed seat and the right side surface of the right limit frame. The corrugated tubes are all sleeved on the outer surface of the bidirectional screw to realize the adjustment of the spacing of the limit frames, thereby realizing the adjustment of the spacing of the limit wheels.
[0008] Furthermore, symmetrically distributed supports are fixedly connected to the rear end of the upper surface of the paper slitting table. A second conveyor roller is rotatably connected to the upper end of each of two horizontally adjacent supports. Support seats are provided at the upper end and middle of the support frame. The two support seats at the rear end are rotatably connected to the corresponding ends of the slitting rollers. A top roller is rotatably connected between the two uppermost support seats. A first conveyor roller is rotatably connected between the two frontmost support seats to realize the conveying of the paper.
[0009] Furthermore, a controller is provided on the left side of the raw paper slitting table. The input terminal of the controller is electrically connected to an external power supply to control various electrical appliances.
[0010] Furthermore, a driven pulley two is fixedly connected to the right end of the top roller, a driven pulley one is fixedly connected to the right end of the slitting roller, a motor is provided at the front end of the lower surface of the paper slitting table, a drive pulley is fixedly connected to the right end of the motor output shaft, the drive pulley, driven pulley one and driven pulley two are connected by a transmission belt, and the input end of the motor is electrically connected to the output end of the controller to provide driving force for paper conveying and cutting.
[0011] Furthermore, a mounting base is fixedly connected to the front end of the upper surface of the raw paper slitting table. Laser range sensors are provided at both ends of the mounting base. Laser reflectors are provided at the lower ends of the inner surfaces of the two limit frames. The laser range sensors are installed in conjunction with the adjacent laser reflectors. The laser range sensors are bidirectionally electrically connected to the controller to accurately control the distance between the two limit frames.
[0012] Compared with the prior art, the beneficial effects of this utility model are: The distance between the two limit frames is adjusted by a screw mechanism, ensuring that the distance between the two limit frames meets the paper slitting requirements. When the paper is conveyed between the four limit wheels, the paper exerts a relative force on the upper limit wheel. Under the reaction force of the torsion spring, the limit wheel provides reverse support for the paper. This ensures that the paper is conveyed in a taut state while achieving accurate paper delivery, preventing the paper from shifting during delivery, which would affect the accuracy of paper slitting and the winding process. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the internal structure of this utility model; Figure 3 This is a cross-sectional view of the limiting mechanism of this utility model; Figure 4 This is a schematic diagram of the rear structure of this utility model.
[0014] In the diagram: 1. Paper slitting table; 2. Support frame; 3. Limiting mechanism; 31. Limiting frame; 32. Rotating shaft; 33. Rotating handle; 34. Fixed shaft; 35. Limiting wheel; 36. Torsion spring I; 37. Limiting disc; 38. Torsion spring II; 4. Fixed seat; 5. Bidirectional screw; 6. Drive handwheel; 7. Guide rod; 8. Corrugated pipe; 9. Laser rangefinder sensor; 10. Laser reflector; 11. Support seat; 12. Top roller; 13. Slitting roller; 14. Slitting knife; 15. Conveyor roller I; 16. Support; 17. Conveyor roller II; 18. Motor; 19. Drive pulley; 20. Driven pulley I; 21. Driven pulley II; 22. Controller. Detailed Implementation
[0015] 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.
[0016] Please see Figure 1-4 This embodiment provides a technical solution: a paper slitting machine for paper tube production, including a paper slitting table 1, a symmetrically distributed support frame 2 fixedly connected to the front end of the upper surface of the paper slitting table 1, a slitting roller 13 arranged at the rear end between the two support frames 2, a uniformly distributed slitting knife 14 arranged on the outer surface of the slitting roller 13, and a controller 22 arranged on the left side of the paper slitting table 1, the input end of the controller 22 being electrically connected to an external power supply.
[0017] According to the specifications, it also includes a limiting mechanism 3; the limiting mechanism 3 includes a limiting frame 31, a rotating shaft 32, a rotating handle 33, a fixed shaft 34, and a limiting wheel 35. The limiting frame 31 is symmetrically arranged inside the two support frames 2. The upper end of each limiting frame 31 is rotatably connected to a rotating shaft 32. The outer surface of the rotating shaft 32 near the center of the paper slitting table 1 is rotatably connected to a rotating handle 33. The side surface of the rotating handle 33 near the center of the paper slitting table 1 is fixedly connected to a fixed shaft 34. The outer surface of the fixed shaft 34 is rotatably connected to a limiting wheel 35. The limiting mechanism 3 also includes a torsion spring 36, a limiting disc 37, and a torsion spring 38. The torsion spring 36 is fixedly connected to the limiting wheel 35 located on the same side. Between the two rotating handles 33 on the outer surface of a rotating shaft 32, a limiting block can be threadedly connected to one end of the rotating shaft 32 near the center of the paper slitting table 1. Simultaneously, clips can be fixedly connected to the pins on both sides of the torsion spring 36, with the clips engaging with the adjacent rotating handles 33 respectively. After the limiting block is rotated out, the rotating handles 33 can slide on the outer surface of the rotating shaft 32. When the rotating handle 33 near the center of the paper slitting table 1 is slid out of the rotating shaft 32, the clips at the pins of the torsion spring 36 are released from engagement. Then, the torsion spring 36 is moved inward along the axial direction of the rotating shaft 32 and removed for replacement, to prevent aging of the torsion spring 36 from affecting the limiting effect on the paper. Torsion springs 36 are movably sleeved on the outer surface of adjacent rotating shafts 32. Both rotating shafts 32 are fixedly connected to limiting discs 37 opposite to their outer surfaces. Torsion springs 38 are provided between the limiting discs 37 and adjacent limiting frames 31. The interior of the limiting disc 37 can be threaded to the end of the rotating shaft 32 furthest from the center of the paper slitting table 1. The pins of the torsion springs 38 furthest from the center of the paper slitting table 1 can be snapped into the end of the adjacent limiting disc 37 closest to the center of the paper slitting table 1 using clips. The end of the torsion springs 38 closest to the center of the paper slitting table 1 can be snapped into the end of the adjacent limiting frame 31 furthest from the center of the paper slitting table 1 using clips. After rotating and removing, the latch at the pin of torsion spring 38 is engaged. Then, torsion spring 38 is moved outward along the axial direction of the rotating shaft 32 and removed. Torsion spring 38 is replaced periodically to prevent aging of torsion spring 38 from affecting the limiting effect of the raw paper. Torsion spring 38 is movably sleeved on the outer surface of the adjacent rotating shaft 32. When the force of the raw paper on the limiting wheel 35 is too large, the rotating shaft 32 can rotate accordingly. The rotation of the rotating shaft 32 drives the adjacent limiting disk 37 to rotate, so that the torsion spring 38 has a torsion force. The elastic force of torsion spring 38 reacts to the limiting disk 37 and is then transmitted to the corresponding rotating shaft 32 to further meet the tension requirements of the raw paper conveying.
[0018] The front end of the upper surface of the paper slitting table 1 is fixedly connected to symmetrically distributed fixed seats 4. The rear end of the two fixed seats 4 is rotatably connected to a bidirectional screw 5. The front ends of the two limit frames 31 are threadedly connected to the outer surface of the bidirectional screw 5. The left end of the bidirectional screw 5 extends to the left side of the left fixed seat 4. The left end of the bidirectional screw 5 is fixedly connected to a drive handwheel 6. The front end of the two fixed seats 4 is fixedly connected to a guide rod 7. The front ends of the two limit frames 31 are slidably connected to the outer surface of the guide rod 7. Corrugated tubes 8 are provided between the rear ends of the inner surfaces of the two limit frames 31, between the right side surface of the left fixed seat 4 and the left side surface of the left limit frame 31, and between the left side surface of the right fixed seat 4 and the right side surface of the right limit frame 31. (During the movement of the limit frame 31, the corrugated tubes 8 extend or contract accordingly to achieve sealing protection of the bidirectional screw 5 and prevent the performance of the bidirectional screw 5 from being affected by the external environment.) The corrugated tubes 8 are all sleeved on the outer surface of the bidirectional screw 5.
[0019] Among them: the rear end of the upper surface of the paper slitting table 1 is fixedly connected with symmetrically distributed supports 16, and the upper ends of two horizontally adjacent supports 16 are rotatably connected with conveyor rollers 17. The upper end and middle of the support frame 2 are provided with support seats 11. The two support seats 11 at the rear end are rotatably connected to the corresponding ends of the slitting rollers 13. The top roller 12 is rotatably connected between the two uppermost support seats 11, and the conveyor roller 15 is rotatably connected between the two frontmost support seats 11.
[0020] Among them: the right end of the top roller 12 is fixedly connected to the driven pulley 21, the right end of the slitting roller 13 is fixedly connected to the driven pulley 20, the front end of the lower surface of the raw paper slitting table 1 is provided with a motor 18, the right end of the output shaft of the motor 18 is fixedly connected to the drive pulley 19, the drive pulley 19, the driven pulley 20 and the driven pulley 21 are connected by a transmission belt, and the input end of the motor 18 is electrically connected to the output end of the controller 22.
[0021] Among them: the front end of the upper surface of the paper slitting table 1 is fixedly connected to the mounting base, and laser rangefinders 9 are set at both ends of the mounting base. Laser reflectors 10 are set at the lower ends of the inner surfaces of the two limit frames 31. The laser rangefinders 9 are installed in conjunction with the adjacent laser reflectors 10. The laser rangefinders 9 are bidirectionally electrically connected to the controller 22.
[0022] The working principle of this utility model is as follows: During operation, the paper slitting table 1, support frame 2, and other mechanisms are first placed stably in the horizontal working area, cooperating with the external winding mechanism and the external paper unwinding mechanism. Then, according to the width of the paper to be slitting, the operator rotates the drive handwheel 6. The rotation of the drive handwheel 6 drives the bidirectional screw 5 to rotate. The rotation of the bidirectional screw 5 causes the two limit frames 31 to move towards the center of the paper slitting table 1 under the guidance of the guide rod 7. Meanwhile, the controller 22 enables the laser rangefinder 9 to operate. The laser probes of the laser rangefinder 9 emit lasers towards the horizontally adjacent laser reflectors 10. Based on the speed of light and the time it takes for the laser reflectors 10 to reflect the lasers back, the controller calculates the distance between the two limit frames 31 and the longitudinal center axis of the paper slitting table 1. The controller then sends the position information of the limit frames 31 to the signal receiving end of the controller 22 in real time. The controller 22 can obtain the spacing information between the two limit frames 31 by processing and integrating the received position information. When the distance between the two limit frames 31 meets the limiting requirements of the raw paper, the drive handwheel 6 stops rotating, and the controller 22 starts the motor 18. The output shaft of the motor 18 rotates, driving the drive pulley 19 to rotate. The drive pulley 19 drives the driven pulley 20 and driven pulley 21 to rotate via the transmission belt. The driven pulley 20 rotates, driving the slitting roller 13 to rotate, which in turn drives the evenly distributed slitting blades 14 to rotate. The driven pulley 21 rotates, driving the top roller 12 to rotate. The rotation of the slitting roller 13 and the top roller 12... The moving mechanism provides driving force for conveying the raw paper, while the external winding mechanism also provides traction force for the movement of the slit raw paper, so that the raw paper moves from front to back. The raw paper passes in sequence through the lower end of the first conveyor roller 15, the upper end of the top roller 12, the lower end of the slitting roller 13, the lower end of the second conveyor roller 17 on the front side, and the upper end of the second conveyor roller 17 on the rear side, and is finally wound up by the external winding mechanism. When the raw paper passes through the slitting roller 13, the slitting blades 14 evenly distributed on the outer surface of the slitting roller 13 exert a downward force on the raw paper, thereby realizing the slitting and cutting of the raw paper. Meanwhile, after the raw paper passes the lower end of the conveyor roller 15, the edges of the raw paper are all located between the four limiting wheels 35 on the same side. During the upward movement of the raw paper, the two upper limiting wheels 35 provide an upward force, causing the upper limiting wheels 35 to rotate in opposite directions around the central axis of the adjacent rotating shaft 32. The upward rotation of the limiting wheels 35 drives the corresponding rotating handles 33 to rotate upward. The two rotating handles 33 located on the outer surface of the same rotating shaft 32 rotate in opposite directions, causing the torsion springs 36 to hold a torsion force. The elastic force of the torsion springs 36 reacts to the rotating handles 33, causing the limiting wheels 35 to exert a downward force on the raw paper. This further maintains the tension of the raw paper during conveying, making it easier for the slitting knife 14 to slit the raw paper, while also achieving limiting during the raw paper conveying process and ensuring the accuracy of the raw paper conveying.
[0023] It is worth noting that the controller 22 disclosed in the above embodiments can be an S7-300, the laser rangefinder 9 can be an LDM301, and the controller 22 controls the operation of the laser rangefinder 9 and the motor 18 using methods commonly used in the prior art.
[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A paper slitting machine for paper tube production, comprising a paper slitting table (1), wherein symmetrically distributed support frames (2) are fixedly connected to the front end of the upper surface of the paper slitting table (1), and a slitting roller (13) is provided at the rear end between the two support frames (2), and uniformly distributed slitting blades (14) are provided on the outer surface of the slitting roller (13), characterized in that: It also includes a limiting mechanism (3); The limiting mechanism (3) includes a limiting frame (31), a rotating shaft (32), a rotating handle (33), a fixed shaft (34), and a limiting wheel (35). The limiting frame (31) is symmetrically arranged inside the two support frames (2). The upper end of the limiting frame (31) is rotatably connected to the rotating shaft (32). The outer surface of the rotating shaft (32) near the center of the paper slitting table (1) is rotatably connected to the rotating handle (33). The side surface of the rotating handle (33) near the center of the paper slitting table (1) is fixedly connected to the fixed shaft (34). The outer surface of the fixed shaft (34) is rotatably connected to the limiting wheel (35).
2. A paper slitting machine for paper tube production according to claim 1, characterized in that: The limiting mechanism (3) further includes a torsion spring (36), a limiting plate (37), and a torsion spring (38). The torsion spring (36) is fixedly connected between two rotating handles (33) located on the outer surface of the same rotating shaft (32). The torsion spring (36) is movably sleeved on the outer surface of the adjacent rotating shaft (32). The two rotating shafts (32) are fixedly connected to the limiting plate (37) on opposite outer surfaces. The torsion spring (38) is provided between the limiting plate (37) and the adjacent limiting frame (31). The torsion spring (38) is movably sleeved on the outer surface of the adjacent rotating shaft (32).
3. A paper slitting machine for paper tube production according to claim 1, characterized in that: The front end of the upper surface of the paper slitting table (1) is fixedly connected to symmetrically distributed fixed seats (4). The rear end of the two fixed seats (4) is rotatably connected to a bidirectional screw (5). The front ends of the two limit frames (31) are threadedly connected to the outer surface of the bidirectional screw (5). The left end of the bidirectional screw (5) extends to the left side of the left fixed seat (4). The left end of the bidirectional screw (5) is fixedly connected to a drive handwheel (6). The front end of the two fixed seats (4) is fixedly connected to a guide rod (7). The front ends of the two limit frames (31) are slidably connected to the outer surface of the guide rod (7). Corrugated tubes (8) are provided between the rear ends of the inner surfaces of the two limit frames (31), between the right side surface of the left fixed seat (4) and the left side surface of the left limit frame (31), and between the left side surface of the right fixed seat (4) and the right side surface of the right limit frame (31). The corrugated tubes (8) are all sleeved on the outer surface of the bidirectional screw (5).
4. A paper slitting machine for paper tube production according to claim 1, characterized in that: The rear end of the upper surface of the paper slitting table (1) is fixedly connected with symmetrically distributed supports (16). The upper ends of two horizontally adjacent supports (16) are rotatably connected with conveyor rollers (17). Support seats (11) are provided at the upper end and middle of the support frame (2). The two support seats (11) at the rear end are rotatably connected to the corresponding ends of the slitting rollers (13). The top roller (12) is rotatably connected between the two uppermost support seats (11). The first conveyor roller (15) is rotatably connected between the two frontmost support seats (11).
5. A paper slitting machine for paper tube production according to claim 4, characterized in that: A controller (22) is provided on the left side of the paper slitting table (1), and the input terminal of the controller (22) is electrically connected to an external power supply.
6. A paper slitting machine for paper tube production according to claim 5, characterized in that: The right end of the top roller (12) is fixedly connected to a driven pulley two (21), the right end of the slitting roller (13) is fixedly connected to a driven pulley one (20), a motor (18) is provided at the front end of the lower surface of the paper slitting table (1), a drive pulley (19) is fixedly connected to the right end of the output shaft of the motor (18), the drive pulley (19), the driven pulley one (20) and the driven pulley two (21) are connected by a transmission belt, and the input end of the motor (18) is electrically connected to the output end of the controller (22).
7. A paper slitting machine for paper tube production according to claim 5, characterized in that: The front end of the upper surface of the paper slitting table (1) is fixedly connected to a mounting base. Both ends of the mounting base are equipped with laser rangefinders (9). The lower ends of the inner surfaces of the two limit frames (31) are equipped with laser reflectors (10). The laser rangefinders (9) are installed in conjunction with the adjacent laser reflectors (10). The laser rangefinders (9) are bidirectionally electrically connected to the controller (22).