Paper cutting device

Abstract

The utility model provides a paper cutting device which comprises fixing supports, a guiding assembly is installed at the lower end of the front side of each fixing support, each guiding assembly comprises fixing blocks, bolts, a rotating head, a first clamping groove, a curved shaft, a second clamping groove, a clamping block and a curved roller, and the fixing blocks are fixedly installed at the lower ends of the front sides of the left fixing support and the right fixing support through the bolts. Rotating heads are rotatably mounted in the left and right fixing blocks, first clamping grooves penetrating left and right are formed in the inner walls of the rotating heads, a curved shaft is fixedly mounted between the interiors of the left and right rotating heads, second clamping grooves are formed in the tops of the left and right ends of the curved shaft, and clamping blocks are fixedly mounted between the first clamping grooves and the second clamping grooves; and a curved roller is fixedly mounted on the outer surface of the curved shaft. According to the paper cutting and slitting device, the overall efficiency of packaging paper slitting and the follow-up paper taking process can be remarkably improved.

Description

Technical Field

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

[0002] In the industrial production of packaging paper, the slitting device is one of the core processing equipment. Its function is to cut wide-width base paper into multiple rows of narrow-width paper according to preset specifications, and complete the finished product sorting through the winding mechanism.

[0003] Most paper slitting devices on the market often leave the cut and rolled-up sheets tightly clustered together after slitting. This adhesion between the sheets greatly hinders the subsequent paper extraction process. This paper sticking problem severely impacts production efficiency, forcing operators to spend extra time and effort separating the stuck sheets, increasing labor costs. Furthermore, the separation process can easily damage the paper, leading to a higher scrap rate and further increasing production costs. Therefore, the development of a new type of paper cutting and slitting device is urgently needed.

[0004] This invention aims to design a paper cutting and slitting device that uses a pneumatic pressure knife mounted on a fixed bracket to cut paper and guides the paper winding with the aid of a curved shaft. This design can significantly improve the overall efficiency of packaging paper cutting and subsequent paper handling processes, and is expected to fundamentally solve the problems existing in current cutting devices. Utility Model Content

[0005] The present invention aims to solve the technical problems mentioned in the background art and provide a paper cutting and slitting device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a paper cutting and slitting device, comprising: a fixed bracket, a guide assembly installed at the lower front end of the fixed bracket, the guide assembly comprising: a fixed block, a bolt, a rotating head, a first slot, a curved shaft, a second slot, a block, and a curved roller, both the left and right fixed brackets having fixed blocks fixedly installed at their lower front ends by bolts, both fixed blocks having rotating heads rotatably installed inside, the inner wall of the rotating head having a first slot extending through from left to right, a curved shaft being fixedly installed between the two rotating heads, the top of both ends of the curved shaft having a second slot, a block being fixedly installed between the first and second slots, and a curved roller being fixedly installed on the outer surface of the curved shaft.

[0007] A further preferred embodiment: support plates are fixedly installed on the upper side walls of the fixed bracket, and a slitting shaft is rotatably installed between the lower ends of the two support plates via a bearing, with a slitting roller fixedly installed on the outer surface of the slitting shaft.

[0008] A further preferred embodiment: A pneumatic pressure cutting module is installed between the upper rear ends of the two support plates on the left and right sides. The pneumatic pressure cutting module includes a pneumatic pressure cutting blade, and the bottom end of the pneumatic pressure cutting blade is in movable contact with the surface of the slitting roller.

[0009] A further preferred embodiment: A limiting shaft is fixedly installed between the front top ends of the two support plates on the left and right sides to prevent the paper from tilting upwards too high during slitting.

[0010] A further preferred embodiment: the rotating head is a drum-shaped structure that extends through the left and right sides, with a convex center and vertical sides, and the distance between the left and right ends of the curved shaft extending out of the curved rollers is equal to the length of the second slot.

[0011] A further preferred embodiment: the curved shaft is a curved arc-shaped long shaft, and the curved roller is a curved arc-shaped circular roller.

[0012] A further preferred embodiment: the height of the card block is greater than the depth of the first card slot and the second card slot, and the left and right length of the card block is less than the left and right length of the second card slot.

[0013] Beneficial effects:

[0014] 1. By setting up a curved guide structure (curved shaft and curved roller), the winding paper is naturally separated without manual intervention; the curved shaft's arc design causes the paper to bend slightly in a wave shape during winding, reducing the contact area between the papers and preventing sticking; the curved roller's arc surface guides the paper to form a controllable curvature, avoiding the tight adhesion caused by traditional flat winding.

[0015] 2. By setting up a pneumatic pressure cutter in conjunction with a slitting roller, the pneumatic pressure cutter is driven by air pressure, and the pressure is adjustable to adapt to different paper thicknesses, avoiding overload of the cutter or incomplete cutting, ensuring neat cuts and low energy consumption;

[0016] 3. In summary, this paper cutting and slitting device can significantly improve the overall efficiency of packaging paper cutting and subsequent paper handling processes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall front view structure and paper movement direction of this utility model.

[0018] Figure 2 This is a schematic diagram of the overall rear view structure and paper movement direction of this utility model.

[0019] Figure 3 This is a schematic diagram of the guiding component structure of this utility model.

[0020] Figure 4 This is an exploded structural diagram of the guide component of this utility model.

[0021] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0022] Figure 6 This is a schematic diagram of the rotating head structure of this utility model.

[0023] Figure 7 This is a top view of the guide component of this utility model.

[0024] Figure 8 This is a side view of the guide component of this utility model.

[0025] Figure 1-8 In the middle: 1. Fixed bracket; 2. Support plate; 3. Slitting shaft; 4. Slitting roller; 5. Limiting shaft; 6. Pneumatic pressure cutting knife module; 7. Guide assembly; 8. Fixing block; 9. Bolt; 10. Rotating head; 101-First slot; 11. Curved shaft; 1101-Second slot; 12. Locking block; 13. Curved roller; 14. Paper. Detailed Implementation

[0026] The following will refer to the appendix in the embodiments of this utility model. Figures 1-8 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0027] Please see Figure 1-8In this embodiment of the utility model, a paper cutting and slitting device includes: a fixed bracket 1, a guide component 7 installed at the lower front end of the fixed bracket 1, the guide component 7 including: a fixed block 8, a bolt 9, a rotating head 10, a first slot 101, a curved shaft 11, a second slot 1101, a locking block 12, and a curved roller 13. The lower front ends of both left and right fixed brackets 1 are fixedly mounted with fixed blocks 8 by bolts 9. The function of the fixed blocks 8 is to provide a stable mounting base for the rotating head 10, and the bolts 9 ensure a tight connection between the fixed blocks 8 and the fixed bracket 1. This connection method facilitates disassembly and installation when maintenance or adjustment of the device is required. A rotating head 10 is rotatably mounted inside both left and right fixed blocks 8. The rotating head 10 can rotate flexibly within the fixed blocks 8. The inner wall of the rotating head 10 has a first slot 101 that extends through from left to right. The first slot 101 is used to cooperate with the locking block 12 to achieve the installation and positioning of the curved shaft 11. The interiors of the left and right rotating heads 10... A curved shaft 11 is fixedly installed between the two parts. The curved shaft 11 is a curved arc-shaped long shaft that guides the paper 14 to move along a specific arc-shaped path, effectively preventing the paper from sticking together during the winding process. This is one of the key structures for solving the paper sticking problem in the prior art. A second slot 1101 is opened at the top of both the left and right ends of the curved shaft 11. A locking block 12 is fixedly installed between the first slot 101 and the second slot 1101. The locking block 12 is firmly locked between the two slots, realizing a reliable connection between the rotating head 10 and the curved shaft 11. A curved roller 13 is fixedly installed on the outer surface of the curved shaft 11. The curved roller 13 is a curved arc-shaped round roller that directly contacts the paper 14. During the process of the paper 14 being pulled, the curved roller 13 rotates with the movement of the paper 14, further assisting in guiding the paper 14 along the arc-shaped path of the curved shaft 11, reducing the friction between the paper and other parts of the device, and ensuring the smooth transport of the paper 14.

[0028] In this embodiment of the utility model, support plates 2 are fixedly installed on the upper side wall of the fixed bracket 1. The support plates 2 provide a horizontal support platform for the slitting shaft 3 and related components installed later, ensuring the stability of these components during operation. The slitting shaft 3 is rotatably installed between the lower ends of the left and right support plates 2 through bearings. The slitting roller 4 is fixedly installed on the outer surface of the slitting shaft 3. The use of bearings allows the slitting shaft 3 to rotate flexibly, reducing resistance during rotation. The slitting roller 4 is the direct component that realizes the paper 14 slitting function. Under the drive of external power, the slitting roller 4 rotates together with the slitting shaft 3, and works with the pneumatic pressure cutting module 6 to slitting the paper 14, cutting the wide original paper into multiple rows of narrow paper 14 according to the preset specifications.

[0029] In this embodiment of the utility model, a pneumatic pressure cutting module 6 is installed between the upper rear ends of the two support plates 2 on the left and right. The pneumatic pressure cutting module 6 includes a pneumatic pressure cutting blade. The bottom end of the pneumatic pressure cutting blade is in movable contact with the surface of the slitting roller 4. As a key cutting component of the slitting device, the pneumatic pressure cutting blade can quickly press down after receiving a pneumatic signal and cooperate with the surface of the slitting roller 4 to efficiently slit the paper 14 located between the two. The paper 14 passes through the pneumatic pressure cutting blade in the pneumatic pressure cutting module 6 and is slit by contact with the surface of the slitting roller 4. Then, it is guided downward through the curved roller 13 of the guide component 7 to enter the next process. Neither the slitting roller 4 nor the curved roller 13 rotates on its own. Instead, the paper 14 drives the slitting roller 4 and the curved roller 13 to rotate under the pull of external power. This design makes the power consumption of the device more reasonable during the slitting and guiding process of the paper 14, and at the same time, it can better control the slitting and conveying accuracy of the paper 14.

[0030] In this embodiment of the invention, a limiting shaft 5 is fixedly installed between the front top ends of the left and right support plates 2 to prevent the paper 14 from tilting upwards too high during slitting. During the paper slitting process, due to the downward pressure of the pneumatic pressure cutter and the tension of the paper 14 itself, the paper 14 is prone to tilting upwards. The installation of the limiting shaft 5 can effectively limit the height of the paper 14 tilting upwards, ensure the flatness of the paper 14 during the slitting process, improve the slitting quality, and avoid problems such as inaccurate slitting dimensions or damage to the paper 14 caused by tilting.

[0031] In this embodiment of the utility model, the rotating head 10 is a drum-shaped structure that extends through the left and right sides, with a rounded convex middle section and vertical left and right sides. This special shape design makes the rotating head 10 more stable when rotating within the fixed block 8 and less prone to deviation. On the other hand, its rounded convex middle section can better accommodate and protect the internally installed structures such as the card block 12. The distance between the left and right ends of the curved shaft 11 extending out of the curved roller 13 is equal to the length of the second card slot 1101. This size design can ensure that when the curved shaft 11 and the rotating head 10 are connected through the card block 12, the structure of the connection part is compact and stable. At the same time, it also facilitates the flexible rotation of the curved shaft 11 within the rotating head 10 according to the guiding requirements of the paper 14.

[0032] In this embodiment of the invention, the curved shaft 11 is a curved arc-shaped long shaft, and the curved roller 13 is a curved arc-shaped round roller. This unique arc design is specifically designed to solve the problem of paper adhesion. During the paper winding process, the arc-shaped curved shaft 11 and curved roller 13 can guide the paper to move at a certain arc, so that the paper 14 will not stick tightly together, thereby reducing the possibility of paper 14 adhesion. At the same time, this arc structure also helps the paper 14 to better adapt to the internal spatial layout of the device during the conveying process, ensuring the smoothness and stability of the paper 14 conveying.

[0033] In this embodiment of the invention, the height of the locking block 12 is greater than the depth of the first slot 101 and the second slot 1101. This allows the locking block 12 to be securely locked between the two slots, achieving a reliable connection between the rotating head 10 and the curved shaft 11. This prevents the two from loosening or separating during the operation of the device, ensuring the normal operation of the guide assembly 7. The left and right length of the locking block 12 is less than the left and right length of the second slot 1101. This ensures that the curved shaft 11 can rotate flexibly with the rotating head 10 when the rotating head 10 rotates, thereby accurately guiding the paper 14 along its conveying path.

[0034] Working Principle: When using this paper cutting and slitting device, the wide-width raw paper to be cut is first installed in a suitable position so that it can smoothly enter the slitting device. Under the traction of external power, the raw paper is first conveyed forward to the space between the pneumatic pressure cutting knife module 6 and the slitting roller 4. At this time, after receiving the corresponding command, the pneumatic pressure cutting knife in the pneumatic pressure cutting knife module 6 quickly presses down and cooperates with the slitting roller 4 on the slitting shaft 3 to cut the wide-width raw paper into multiple rows of narrow-width paper sheets 14 according to the preset specifications. After being cut, the paper sheets 14 continue to move downward to the guide component 7 under the pull of external power. When the paper sheets 14 come into contact with the curved roller 13, since the curved shaft 11 is a curved arc-shaped long shaft and the curved roller 13 is also an arc-shaped round roller, the paper sheets 14 move forward along the arc-shaped path formed by the curved shaft 11 and the curved roller 13. During this process, the rotating head 10 rotates flexibly within the fixed block 8 according to the guiding requirements of the paper 14. The curved shaft 11 is connected to the rotating head 10 through the locking block 12 and rotates together with it, thereby ensuring that the paper 14 can be stably guided to the next process along an arc-shaped trajectory, avoiding the problem of the paper 14 sticking tightly during the winding process. At the same time, during the slitting process, the limiting shaft 5 always restricts the paper 14, preventing the paper 14 from tilting too high due to various forces during slitting, ensuring the flatness and accuracy of the paper 14 slitting.

Claims

1. A paper cutting and slitting device, comprising: A fixed bracket (1) is characterized in that: a guide assembly (7) is installed at the lower front end of the fixed bracket (1), the guide assembly (7) including: a fixing block (8), a bolt (9), a rotating head (10), a first slot (101), a curved shaft (11), a second slot (1101), a locking block (12), and a curved roller (13). The lower front ends of both the left and right fixed brackets (1) are fixedly installed with fixing blocks (8) by bolts (9). A rotating head (10) is rotatably installed inside each of the two rotating heads (10). A first slot (101) is opened on the inner wall of the rotating head (10) and passes through it from left to right. A curved shaft (11) is fixedly installed between the two rotating heads (10) on the left and right sides. A second slot (1101) is opened on the top of both ends of the curved shaft (11). A locking block (12) is fixedly installed between the first slot (101) and the second slot (1101). A curved roller (13) is fixedly installed on the outer surface of the curved shaft (11).

2. The paper cutting and slitting device according to claim 1, characterized in that: The upper side wall of the fixed bracket (1) is fixedly installed with support plates (2), and the lower ends of the two support plates (2) are rotatably installed with a slitting shaft (3) through a bearing. The outer surface of the slitting shaft (3) is fixedly installed with a slitting roller (4).

3. The paper cutting and slitting device according to claim 2, characterized in that: A pneumatic pressure cutting module (6) is installed between the upper rear ends of the two support plates (2) on the left and right sides. The pneumatic pressure cutting module (6) includes a pneumatic pressure cutting knife, and the bottom end of the pneumatic pressure cutting knife is in movable contact with the surface of the slitting roller (4).

4. The paper cutting and slitting device according to claim 2, characterized in that: A limiting shaft (5) is fixedly installed between the front top ends of the two support plates (2) on the left and right sides to prevent the paper (14) from tilting upwards too high during cutting.

5. The paper cutting and slitting device according to claim 1, characterized in that: The rotating head (10) is a round drum shape with a convex center and vertical sides. The distance between the left and right ends of the curved shaft (11) extending into the curved roller (13) is equal to the length of the second slot (1101).

6. The paper cutting and slitting device according to claim 1, characterized in that: The curved shaft (11) is a curved arc-shaped long shaft, and the curved roller (13) is a curved arc-shaped round roller.

7. The paper cutting and slitting device according to claim 1, characterized in that: The height of the card block (12) is greater than the groove depth of the first card slot (101) and the second card slot (1101), and the left and right length of the card block (12) is less than the left and right length of the second card slot (1101).

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