Packaging paper slitting device

By using a tensioning unit and an adjustable cutting system, the problem of existing slitting devices being unable to adapt to different sizes has been solved, enabling flexible slitting and efficient transport of packaging paper and reducing the cost of replacing the device.

CN224255452UActive Publication Date: 2026-05-19SHANGHAI QIANGHAO PACKAGING TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI QIANGHAO PACKAGING TECHNOLOGY CO LTD
Filing Date
2025-06-17
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing slitting equipment can only slit at fixed positions, which cannot adapt to different slitting size requirements, resulting in low work efficiency and increased costs.

Method used

It adopts a tensioning unit and an adjustable cutting system. The position of the ring blade is adjusted by means of lead screw and motor drive. Combined with scale and spring mechanism, it ensures the tension and cutting accuracy of packaging paper. The gearbox and motor synchronously drive the roller to rotate to adapt to the cutting requirements of different sizes.

Benefits of technology

It enables flexible cutting of packaging paper of different sizes on the same device, improves work efficiency, reduces the cost of changing devices, and ensures cutting accuracy and transmission stability.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a packaging paper slitting device which comprises a machine frame, input packaging paper and packaging paper output after slitting are tensioned through a tensioning unit so as to facilitate conveying of the packaging paper, a sliding ring is driven to move on a roller body through cooperation of a lead screw and a connecting lug, then the position of a ring blade is adjusted, and therefore the packaging paper can be conveniently conveyed. Different lead screws are screwed according to needs, the positions of different ring blades are adjusted, packaging paper of different sizes can be slit, a roller body is driven to rotate through a first gear box and a first motor, then the packaging paper is slit, the slit packaging paper is driven to be conveyed through a driving roller set, and the packaging paper is conveyed through a conveying belt. And the screw rod can be conveniently screwed and locked through the driving head and the torsion ring.
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Description

Technical Field

[0001] This utility model relates to the field of slitting device technology, specifically a packaging paper slitting device. Background Technology

[0002] In the production process of packaging paper, the final finished packaging paper is usually cut to adapt to products of different specifications.

[0003] However, existing slitting devices can only slit packaging paper at fixed positions and cannot adapt to different slitting size requirements. To slit different sizes, it is necessary to replace the slitting device with a different specification, which greatly affects work efficiency and increases costs. Therefore, a packaging paper slitting device is needed to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model discloses a packaging paper slitting device. The technical solution adopted is as follows: A frame is included, and tensioning units are provided at both ends of the frame, with the two tensioning units arranged symmetrically. A pad roller is arranged from front to back inside the frame. Each tensioning unit includes a first tensioning roller, a second tensioning roller, and a flattening roller. The first tensioning roller, the second tensioning roller, and the flattening roller are arranged from front to back inside the frame. The second tensioning roller is located below and inside the first tensioning roller, and the flattening roller is located below the second tensioning roller. The tensioning roller is located on the inner side of the tensioning roller, at a height between the first and second tensioning rollers. Tensioning mechanisms are provided at the ends of the first and second tensioning rollers. A cutting roller is positioned above the padding roller. The cutting roller includes a roller body, lead screws, a sliding groove, a first gearbox, and a first motor. The roller body is a hollow cylindrical structure. Several lead screws are evenly distributed circumferentially and rotate within the roller body from front to back. The sliding groove is located on the side of the roller body and corresponds to the lead screws. The first motor is located at the rear of the frame. On the side, the roller body is connected to the output shaft of the first motor via a first gearbox. A drive head is provided at the front end of the roller body, which is connected to a lead screw and fixed by a torsion ring. A cutter is provided on the roller body, comprising a slip ring, a ring blade, and a connecting lug. The slip ring is slidably fitted onto the roller body, the ring blade is fixedly fitted onto the slip ring, and the connecting lug is located inside the slip ring and slides through a groove threaded onto the lead screw. The number of roller bodies is the same as the number of lead screws. A drive mechanism is provided on the right side of the roller body. The roller assembly tensions the input and output packaging paper via a tensioning unit, facilitating its transport. A lead screw, in conjunction with connecting lugs, moves a slip ring on the roller body, adjusting the position of the ring blades. By turning different lead screws as needed, the positions of different ring blades can be adjusted, enabling the cutting of packaging paper of different sizes. The first gearbox and first motor drive the roller body to rotate, thereby cutting the packaging paper. The roller assembly then transports the cut packaging paper. A drive head and torsion ring facilitate the turning and locking of the lead screws.

[0005] As a preferred technical solution of the packaging paper slitting device of this utility model, the driving roller group has two driving rollers, which are connected by a second gear group on the rear side of the frame and driven by a second motor set above them. The second motor and the second gear group drive the two driving rollers to rotate synchronously, thereby clamping and transporting the packaging paper.

[0006] As a preferred technical solution of the packaging paper slitting device of this utility model, the tensioning mechanism includes a push block, a slide column and a spring. The slide column is arranged from top to bottom on the front and rear sides of the frame. The push block is slidably sleeved on the slide column. The ends of the first tensioning roller and the second tensioning roller are respectively connected to the corresponding push blocks. The spring is sleeved on the slide column and abuts against the push block. The push block of the first tensioning roller is abutted upward and the push block of the second tensioning roller is abutted downward. By the spring abutting against the push block, the tensioning roller can always keep the packaging paper taut.

[0007] As a preferred technical solution of the packaging paper slitting device of this utility model, the drive head includes a shaft head, a fixed ring and a linkage groove. The fixed ring is fixedly disposed at the front end of the roller body. The fixed ring has evenly distributed slots around its upper circumference. The shaft head is rotatably disposed at the front end of the roller body and located inside the fixed ring. The shaft head is connected to the lead screw. The linkage groove is opened on the side of the shaft head, which facilitates the turning of the lead screw.

[0008] As a preferred technical solution of the packaging paper slitting device of this utility model, a scale is provided in the frame and the scale is located above the cutter, so that the position of the ring blade can be adjusted accordingly through the scale.

[0009] As a preferred technical solution of the packaging paper slitting device of this utility model, the torsion ring includes a ring body, a linkage block and an insert block. The ring body is slidably sleeved on the shaft head. The linkage block is fixedly disposed on the inner side of the ring body and slidably disposed in the linkage groove. The insert block is disposed at the inner end of the ring body and cooperates with the slot of the fixed ring. The ring body and the shaft head can be linked by the linkage block and the linkage groove. The lead screw can be locked by the insert block entering the slot of the fixed ring.

[0010] The beneficial effects of this utility model are as follows: This utility model uses a tensioning unit to tension the input packaging paper and the output packaging paper after slitting, thereby facilitating its transmission. A lead screw, in conjunction with a connecting ear, drives the slip ring to move on the roller body, thereby adjusting the position of the ring blade. By turning different lead screws as needed, the positions of different ring blades can be adjusted, enabling the slitting of packaging paper of different sizes. A first gearbox and a first motor drive the roller body to rotate, thereby slitting the packaging paper. A drive roller group drives the slitting packaging paper for transmission. A drive head and a torsion ring facilitate the turning and locking of the lead screw. A second motor and a second gear group synchronously drive two drive rollers to rotate, thereby clamping and transmitting the packaging paper. A spring abuts against the push block, ensuring the tensioning roller always keeps the packaging paper taut. A shaft head facilitates the turning of the lead screw, and a scale facilitates the corresponding adjustment of the ring blade position. A linkage block and a linkage groove enable the ring body and shaft head to form a linkage. An insert block enters the slot of the fixed ring, locking the lead screw. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the frame structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the tensioning mechanism of this utility model;

[0014] Figure 4 This is a schematic diagram of the cutter roller structure of this utility model;

[0015] Figure 5 This is an enlarged structural diagram of point A in this utility model;

[0016] Figure 6 This is a schematic diagram of the cutting blade structure of this utility model;

[0017] Figure 7 This is a schematic diagram of the torsion ring structure of this utility model.

[0018] In the diagram: 1-Frame, 101-Padded roller, 102-Scale, 2-Tensioning unit, 21-First tensioning roller, 22-Second tensioning roller, 23-Flat roller, 3-Cut roller, 31-Roller body, 32-Screw, 33-Groove, 34-First gearbox, 35-First motor, 4-Cuter, 41-Slip ring, 42-Ring blade, 43-Connecting ear, 5-Drive roller group, 501-Second gear group, 502-Second motor, 6-Tensioning mechanism, 61-Push block, 62-Sliding column, 63-Spring, 7-Drive head, 71-Shaft head, 72-Fixing ring, 73-Linkage groove, 8-Torsion ring, 81-Ring body, 82-Linkage block, 83-Insertion block. Detailed Implementation

[0019] Example 1

[0020] like Figures 1 to 7As shown, this utility model discloses a packaging paper slitting device. The technical solution adopted includes a frame 1, with tensioning units 2 arranged at both ends of the frame 1, and the two tensioning units 2 are arranged symmetrically. A pad roller 101 is arranged from front to back inside the frame 1. The tensioning unit 2 includes a first tensioning roller 21, a second tensioning roller 22, and a flat roller 23. The first tensioning roller 21, the second tensioning roller 22, and the flat roller 23 are arranged from front to back inside the frame 1. The second tensioning roller 22 is located below the inner side of the first tensioning roller 21, and the flat roller 23 is located inside the second tensioning roller 22, with its height located between the first tensioning roller 21 and the second tensioning roller 22. The ends of the first tensioning roller 21 and the second tensioning roller 22 are... A tensioning mechanism 6 is provided, which includes a push block 61, a slide column 62, and a spring 63. The slide column 62 is arranged from top to bottom on the front and rear sides of the frame 1. The push block 61 is slidably sleeved on the slide column 62. The ends of the first tensioning roller 21 and the second tensioning roller 22 are respectively connected to the corresponding push blocks 61. The spring 63 is sleeved on the slide column 62 and abuts against the push block 61. The push block 61 of the first tensioning roller 21 is abutted upward, and the push block 61 of the second tensioning roller 22 is abutted downward. By the spring 63 abutting against the push block 61, the tensioning roller can always keep the packaging paper taut. A cutting roller 3 is provided above the padding roller 101. The cutting roller 3 includes a roller body 31, a lead screw 32, a slide groove 33, a first gearbox 34, and a second gearbox 35. The machine includes a motor 35, a roller body 31 which is a hollow cylindrical structure, and several lead screws 32 evenly distributed around the circumference and rotating from front to back within the roller body 31. Slide grooves 33 are formed on the side of the roller body 31, corresponding to the lead screws 32. The first motor 35 is located on the rear side of the frame 1. The roller body 31 is connected to the output shaft of the first motor 35 via a first gearbox 34. A drive head 7 is located at the front end of the roller body 31, connected to the lead screws 32, and fixed by a torsion ring 8. The drive head 7 includes a shaft head 71, a fixing ring 72, and a linkage groove 73. The fixing ring 72 is fixedly located at the front end of the roller body 31, and a series of locking grooves are evenly distributed around its upper circumference. The shaft head 71 is rotatably disposed at the front end of the roller body 31 and located inside the fixed ring 72. The shaft head 71 is connected to the lead screw 32. The linkage groove 73 is opened on the side of the shaft head 71, which facilitates the turning of the lead screw 32. The torsion ring 8 includes a ring body 81, a linkage block 82 and an insert block 83. The ring body 81 is slidably sleeved on the shaft head 71. The linkage block 82 is fixedly disposed on the inner side of the ring body 81 and slidably disposed in the linkage groove 73. The insert block 83 is disposed at the inner end of the ring body 81 and cooperates with the slot of the fixed ring 72. The linkage block 82 and the linkage groove 73 enable the ring body 81 and the shaft head 71 to form a linkage. The insert block 83 enters the slot of the fixed ring 72 to lock the lead screw 32.A cutter 4 is provided on the roller body 31. The cutter 4 includes a slip ring 41, a ring blade 42, and a connecting ear 43. The slip ring 41 is slidably sleeved on the roller body 31, the ring blade 42 is fixedly sleeved on the slip ring 41, and the connecting ear 43 is located inside the slip ring 41 and slides through the slide groove 33 and is threaded onto the lead screw 32. The number of roller bodies 31 is the same as the number of lead screws 32. A scale 102 is provided inside the frame 1, and the scale 102 is located above the cutter 4. The position of the ring blade 42 can be easily adjusted by the scale 102. A drive roller group 5 is provided on the right side of the roller body 31. The drive roller group 5 has two drive rollers, which are connected by a second gear group 501 on the rear side of the frame 1 and driven by a second motor 502 located above it. The second motor 502 and the second gear set 501 synchronously drive the two drive rollers to rotate, thereby clamping and conveying the packaging paper. The tensioning unit 2 tensions the input packaging paper and the output packaging paper after slitting, facilitating its transmission. The lead screw 32, in conjunction with the connecting ear 43, drives the slip ring 41 to move on the roller body 31, thereby adjusting the position of the ring blade 42. By turning different lead screws 32 as needed, the positions of different ring blades 42 can be adjusted to slit packaging paper of different sizes. The first gearbox 34 and the first motor 35 drive the roller body 31 to rotate, thereby slitting the packaging paper. The drive roller set 5 drives the slit packaging paper for transmission. The drive head 7 and the torsion ring 8 facilitate the turning and locking of the lead screw 32.

[0021] The working principle of this utility model is as follows: The end of the packaging paper output from the feeding mechanism is wound around the first tension roller 21 on the left, then around the second tension roller 22 on the left, and then enters the space between the ring blade 42 and the pad roller 101 from the top of the flat roller 23 on the left. As needed, the corresponding ring body 81 is grabbed and pulled outward. The linkage block 82 moves in the linkage groove 73, so that the insert block 83 leaves the slot of the fixed ring 72. Then the ring body 81 is turned, and the linkage block 82, together with the linkage groove 73, drives the shaft head 71 to rotate, which in turn drives the lead screw 32 to rotate. The corresponding cutter 4 moves along the roller body 31. With the help of the scale 102, it is adjusted to a suitable position. After all the adjustments are completed, the end of the packaging paper is passed through the drive roller group 5, and finally enters the next processing equipment or winding mechanism after passing through the tensioning unit 2 on the right. Then the first motor 35 and the second motor 502 are started to cut the packaging paper.

[0022] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0025] Components not described in detail in this article are existing technologies.

[0026] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A packaging paper slitting device, characterized in that, The machine includes a frame (1), with tensioning units (2) at both ends of the frame (1), and the two tensioning units (2) are symmetrically arranged. A pad roller (101) is arranged inside the frame (1) from front to back. Each tensioning unit (2) includes a first tensioning roller (21), a second tensioning roller (22), and a flat roller (23). The first tensioning roller (21), the second tensioning roller (22), and the flat roller (23) are arranged inside the frame (1) from front to back. The second tensioning roller (22) is located below and inside the first tensioning roller (21). The flat roller (23) is located inside the second tension roller (22), and its height is located between the first tension roller (21) and the second tension roller (22). Tensioning mechanisms (6) are provided at the ends of the first tension roller (21) and the second tension roller (22). A cutting roller (3) is provided above the pad roller (101). The cutting roller (3) includes a roller body (31), a lead screw (32), a slide groove (33), a first gearbox (34), and a first motor (35). The roller body (31) is a hollow cylindrical structure. The lead screw (32) has several A number of lead screws (32) are evenly distributed in a circle and rotate from front to back inside the roller body (31). The slide groove (33) is opened on the side of the roller body (31) and corresponds to the lead screw (32). The first motor (35) is set on the rear side of the frame (1). The roller body (31) is connected to the output shaft of the first motor (35) through the first gearbox (34). A drive head (7) is set at the front end of the roller body (31). The drive head (7) is connected to the lead screw (32) and is fixed by a torsion ring (8). A cutter (4) is provided on the roller body (31). The cutter (4) includes a slip ring (41), a ring blade (42), and a connecting ear (43). The slip ring (41) is slidably sleeved on the roller body (31). The ring blade (42) is fixedly sleeved on the slip ring (41). The connecting ear (43) is located on the inner side of the slip ring (41) and slides through the groove (33) and is threaded onto the lead screw (32). The number of roller bodies (31) is the same as the number of lead screws (32). A drive roller group (5) is provided on the right side of the roller body (31).

2. The packaging paper slitting device according to claim 1, characterized in that: The drive roller group (5) has two drive rollers, which are connected by a second gear group (501) on the rear side of the frame (1) and driven by a second motor (502) located above it.

3. The packaging paper slitting device according to claim 1, characterized in that: The tensioning mechanism (6) includes a push block (61), a slide column (62), and a spring (63). The slide column (62) is arranged from top to bottom on the front and rear sides of the frame (1). The push block (61) is slidably sleeved on the slide column (62). The ends of the first tensioning roller (21) and the second tensioning roller (22) are respectively connected to the corresponding push blocks (61). The spring (63) is sleeved on the slide column (62) and abuts against the push block (61). The push block (61) of the first tensioning roller (21) is abutted upward, and the push block (61) of the second tensioning roller (22) is abutted downward.

4. The packaging paper slitting device according to claim 1, characterized in that: The drive head (7) includes a shaft head (71), a fixing ring (72), and a linkage groove (73). The fixing ring (72) is fixedly disposed at the front end of the roller body (31). A slot is evenly provided around the upper circumference of the fixing ring (72). The shaft head (71) is rotatably disposed at the front end of the roller body (31) and located inside the fixing ring (72). The shaft head (71) is connected to the lead screw (32). The linkage groove (73) is opened on the side of the shaft head (71).

5. A packaging paper slitting device according to claim 1, characterized in that: A scale (102) is provided inside the frame (1), and the scale (102) is located above the cutter (4).

6. A packaging paper slitting device according to claim 4, characterized in that: The torsion ring (8) includes a ring body (81), a linkage block (82), and a plug (83). The ring body (81) is slidably sleeved on the shaft head (71). The linkage block (82) is fixedly disposed on the inner side of the ring body (81) and slidably disposed in the linkage groove (73). The plug (83) is disposed at the inner end of the ring body (81) and cooperates with the slot of the fixed ring (72).