A kind of round cutting device of coated kraft paper

Abstract

The utility model relates to kraft paper cutting device technical field, especially a kind of coated kraft paper round cutting device, including frame, frame top side rotatably arranged unwinding roller, the other side rotatably arranged winding mechanism, frame top fixedly arranged support, it further includes sliding cylinder, frame top slidingly arranged sliding cylinder, embedded setting collecting cylinder in sliding cylinder inner chamber, through slot is opened in the side of sliding cylinder, the length of through slot opening is greater than the outer diameter size of collecting cylinder, support top sets cutting mechanism, lifting plate is set in the inner chamber of cutting mechanism, the part of collecting cylinder outside and through slot edge is set limit mechanism, telescopic mechanism is set between frame top and sliding cylinder, a kind of coated kraft paper round cutting device of the utility model, collecting cylinder uses pull-out type structure, cooperate lifting plate to press down collection, make round paper piece neatly stacked in the inside of collecting cylinder, and, the quick dismounting design of limit mechanism, so that batch finished product can be neatly stacked and taken out once, improve operation convenience.

Description

Technical Field

[0001] This utility model relates to the technical field of kraft paper cutting devices, and in particular to a circular cutting device for coated kraft paper. Background Technology

[0002] A circular cutting device for coated kraft paper is an automated equipment specifically designed for processing environmentally friendly packaging materials. Its core function is to precisely cut coated kraft paper into standard circular shapes. The coating process involves laminating an extremely thin plastic film (such as polyethylene or polypropylene) onto the surface of the kraft paper, which retains the biodegradable and recyclable environmental characteristics of kraft paper while giving it practical properties such as water resistance, oil resistance, and tear resistance, making it an ideal choice for food packaging, industrial cushioning materials, and daily necessities.

[0003] In existing technologies, circular cutting equipment for coated kraft paper typically employs a design scheme of an independent collection box combined with a material drop channel. Specifically, the cut circular paper pieces fall freely under gravity into an independent collection box pre-placed below the equipment. This structure has significant drawbacks: operators must manually and precisely position the vertical alignment between the collection box and the material drop channel. If the placement is off (such as lateral offset or longitudinal misalignment), the paper pieces will scatter outside the collection box, resulting in messy material stacking and warped edges. Especially in batch processing scenarios, these scattered paper pieces need to be manually sorted one by one, which not only increases additional working time but may also cause scratches on the paper surface or peeling of the coating layer due to secondary handling, seriously affecting the quality of the finished product.

[0004] Therefore, to address the problem of inconvenience in neatly stacking and retrieving batches of finished products in batch processing scenarios, a circular cutting device for coated kraft paper can be designed. When using this device, a telescopic mechanism pushes the sliding cylinder horizontally to directly below the lifting cylinder, allowing the bottom surface of the paper strip to naturally adhere to the top surface of the sliding cylinder. Then, the cutting mechanism is activated, using the gap between the blade and the groove wall to complete the circular cutting of the paper strip. Next, the lifting plate is driven to move downwards, pushing the cut circular paper pieces from the top surface of the sliding cylinder into the inner cavity of the collecting cylinder. Finally, all components rise and reset, separating the lifting cylinder from the sliding cylinder. In addition, the rewinding mechanism is activated to achieve automatic paper tape feeding. When the new paper tape covers the surface of the sliding tube, batch continuous operation can be carried out according to the above steps. In the finished product removal stage, after the operation is completed, the telescopic mechanism is activated to drive the sliding tube back to the initial position. Then, the operator pulls out the limiting mechanism and then pulls the collection tube out of the through slot to realize the centralized removal of batch of circular paper pieces. The collection tube adopts a pull-out structure, which, together with the lifting plate pressing down to collect, makes the circular paper pieces neatly stacked inside the collection tube. Furthermore, the quick loading and unloading design of the limiting mechanism allows batch finished products to be neatly stacked and removed at one time, reducing downtime and improving operational convenience. Utility Model Content

[0005] The circular cutting equipment for coated kraft paper usually adopts an independent collection box and a material drop channel design. Operators need to manually and accurately position the vertical correspondence between the collection box and the material drop channel. If the placement is deviated, the paper pieces will scatter outside the collection box, resulting in messy material stacking and edge warping. Therefore, when used in batch operation scenarios, it is inconvenient to neatly stack and remove batches of finished products at one time.

[0006] The technical solution of this utility model is as follows: a circular cutting device for coated kraft paper, including a frame, an unwinding roller rotatably arranged on one side of the top of the frame, a winding mechanism rotatably arranged on the other side, a support fixedly arranged on the top of the frame, and a sliding cylinder slidably arranged on the top of the frame. A collecting cylinder is embedded in the inner cavity of the sliding cylinder. A through groove is opened on one side of the sliding cylinder, and the opening length of the through groove is greater than the outer diameter of the collecting cylinder. A cutting mechanism is arranged on the top of the support, a lifting plate is arranged in the inner cavity of the cutting mechanism, a limiting mechanism is arranged at the outer side of the collecting cylinder and the edge of the through groove, and a telescopic mechanism is arranged between the top of the frame and the sliding cylinder.

[0007] Preferably, when using this coated kraft paper circular cutting device, the drive telescopic mechanism pushes the sliding cylinder horizontally to directly below the lifting cylinder, and then the bottom surface of the paper strip naturally adheres to the top surface of the sliding cylinder. Subsequently, the cutting mechanism is activated, and the circular cutting of the paper strip is completed through the gap between the blade and the groove wall. Then, the lifting plate is driven to move down, pushing the cut circular paper pieces from the top surface of the sliding cylinder into the inner cavity of the collecting cylinder. Then, all components rise and reset, and the lifting cylinder separates from the sliding cylinder. In addition, the winding mechanism is activated to realize automatic feeding of the paper strip. When the new paper strip covers the surface of the sliding cylinder, batch continuous operation can be carried out according to the above steps. In the finished product removal stage, after the operation is completed, the telescopic mechanism is activated to drive the sliding cylinder back to the initial position. Then, the operator pulls out the limiting mechanism and then pulls the collecting cylinder out of the through groove to realize the centralized removal of batch circular paper pieces. The collecting cylinder adopts a pull-out structure, which, together with the lifting plate pressing down to collect, makes the circular paper pieces neatly stacked inside the collecting cylinder. Furthermore, the quick loading and unloading design of the limiting mechanism allows batch finished products to be neatly stacked and removed at one time, reducing downtime and improving operational convenience.

[0008] Preferably, the telescopic mechanism includes an electrically controlled telescopic rod and a connecting seat. The electrically controlled telescopic rod is installed between the top of the frame and the sliding cylinder. The electrically controlled telescopic rod is fixedly connected to the top of the frame. The telescopic end of the electrically controlled telescopic rod is fixedly provided with a connecting seat, and the connecting seat is fixedly connected to the outer wall of the sliding cylinder.

[0009] Preferably, the limiting mechanism includes a limiting component, a limiting rod, and a limiting hole. The limiting component is provided on the outer side of the collecting cylinder and at the edge of the through groove. The limiting rod is fixedly provided on the bottom wall of both ends of the limiting component. The limiting hole is opened at the edge of the through groove to match the two sets of limiting rods.

[0010] Preferably, the cutting mechanism includes an electrically controlled lifting rod, a lifting cylinder, a fixed frame, an annular cutting groove, and an annular serrated cutting blade. The electrically controlled lifting rod is fixedly installed on the top of the support, and the fixed frame is fixedly installed on the top inner side of the support. The telescopic end of the electrically controlled lifting rod slides and penetrates through the inner wall of the fixed frame. The lifting cylinder is fixedly installed on the telescopic end of the electrically controlled lifting rod. An annular serrated cutting blade is fixedly installed on the inner edge of the bottom surface of the lifting cylinder. An annular cutting groove is opened on the inner edge of the top surface of the sliding cylinder. The inner diameter of the annular serrated cutting blade is slightly larger than the minimum diameter of the inner cavity of the annular cutting groove. The inner wall of the annular serrated cutting blade and the inner wall of the inner cavity of the annular cutting groove are fitted with a clearance.

[0011] Preferably, a sliding groove is provided at the top of the bracket, a sliding rod is fixedly installed inside the sliding groove, a sliding block is slidably installed on the side wall of the sliding rod, and the top of the sliding block is fixedly connected to one side of the bottom of the sliding cylinder.

[0012] Preferably, the winding mechanism includes a winding roller, a winding motor, a drive gear, and a driven gear. The winding roller is rotatably mounted on the other side of the top of the frame, and the winding motor is fixedly mounted on the other side of the top of the frame. The winding motor is located below one end of the winding roller, and the drive gear is mounted at the output end of the winding motor. The driven gear is fixedly mounted at one end of the winding roller, and the drive gear and the driven gear mesh for transmission.

[0013] Preferably, an electrically controlled push rod is fixedly installed in the inner cavity of the lifting cylinder, the telescopic end of the electrically controlled push rod is fixedly connected to the top of the lifting plate, a limiting plate is fixedly installed on the top of the frame, the inner wall of the limiting plate is in contact with the outer wall of the sliding cylinder, a handle is fixedly installed on the outer wall of the collecting cylinder, and a controller is fixedly installed on the top outer wall of the frame. The controller is electrically connected to the electrically controlled telescopic rod, the electrically controlled lifting rod, the electrically controlled push rod, and the winding motor.

[0014] The beneficial effects of this utility model are:

[0015] 1. When using this type of coated kraft paper circular cutting device, the drive telescopic mechanism pushes the sliding cylinder to move horizontally to directly below the lifting cylinder, and then the bottom surface of the paper strip naturally adheres to the top surface of the sliding cylinder. Subsequently, the cutting mechanism is activated, and the paper strip is circularly cut by the gap between the blade and the groove wall. Then, the lifting plate is driven to move down, pushing the cut circular paper pieces from the top surface of the sliding cylinder into the inner cavity of the collecting cylinder. Then, all components rise and reset, and the lifting cylinder separates from the sliding cylinder. In addition, the winding mechanism is activated to realize automatic feeding of the paper strip. When the new paper strip covers the surface of the sliding cylinder, batch continuous operation can be carried out according to the above steps. In the finished product removal stage, after the operation is completed, the telescopic mechanism is activated to drive the sliding cylinder back to the initial position. Then, the operator pulls out the limiting mechanism and then pulls the collecting cylinder out of the through groove to realize the centralized removal of batch circular paper pieces. The collecting cylinder adopts a pull-out structure, which, together with the lifting plate pressing down to collect, makes the circular paper pieces neatly stacked inside the collecting cylinder. Furthermore, the quick loading and unloading design of the limiting mechanism allows batch finished products to be neatly stacked and removed at one time, reducing downtime and improving operational convenience.

[0016] 2. High-efficiency batch processing: Through the transmission design of the winding motor and gear set, automatic paper tape feeding and continuous cutting are realized. Multiple batches can be processed after a single positioning, which significantly improves production efficiency.

[0017] 3. Precise Cutting Guarantee: The clearance fit design between the annular serrated cutting blade and the annular cutting groove, combined with the precise displacement control of the electrically controlled lifting rod, ensures smooth and neat cutting edges and reduces burrs. Attached Figure Description

[0018] Figure 1 The diagram shown is a first three-dimensional structural schematic of a circular cutting device for coated kraft paper according to this utility model.

[0019] Figure 2 The diagram shown is a partial three-dimensional structural schematic of a circular cutting device for coated kraft paper according to this utility model.

[0020] Figure 3 The diagram shown is a three-dimensional structural diagram of the disassembled collection cylinder and sliding cylinder of a circular cutting device for coated kraft paper according to this utility model.

[0021] Figure 4 The diagram shown is a three-dimensional structural diagram of the combination of the sliding cylinder and the lifting cylinder of the circular cutting device for coated kraft paper according to this utility model.

[0022] Figure 5 The diagram shown is a plan view of the sliding cylinder and lifting cylinder combination of a circular cutting device for coated kraft paper according to this utility model.

[0023] Figure 6 The diagram shown is a partial three-dimensional structural schematic of the annular cutting groove and the annular serrated cutting blade of the circular cutting device for coated kraft paper according to this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Unwinding roller; 3. Support; 4. Sliding cylinder; 5. Collecting cylinder; 6. Lifting plate; 7. Electrically controlled telescopic rod; 8. Connecting seat; 9. Limiting component; 10. Limiting rod; 11. Limiting hole; 12. Electrically controlled lifting rod; 13. Lifting cylinder; 14. Fixing frame; 15. Annular cutting groove; 16. Annular serrated cutting blade; 17. Sliding groove; 18. Sliding rod; 19. Sliding block; 20. Rewinding roller; 21. Rewinding motor; 22. Driving gear; 23. Driven gear; 24. Electrically controlled push rod; 25. Limiting plate; 26. Handle; 27. Controller. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Please see Figure 1 and Figure 3 This utility model provides an embodiment: a circular cutting device for coated kraft paper, including a frame 1, an unwinding roller 2 rotatably mounted on one side of the top of the frame 1, a winding mechanism rotatably mounted on the other side, a support 3 fixedly mounted on the top of the frame 1, and a sliding cylinder 4 slidably mounted on the top of the frame 1. A collecting cylinder 5 is embedded in the inner cavity of the sliding cylinder 4. A through groove is opened through one side of the sliding cylinder 4, and the opening length of the through groove is greater than the outer diameter of the collecting cylinder 5. A cutting mechanism is mounted on the top of the support 3, a lifting plate 6 is mounted in the inner cavity of the cutting mechanism, a limiting mechanism is mounted on the outer side of the collecting cylinder 5 at the edge of the through groove, and a telescopic mechanism is mounted between the top of the frame 1 and the sliding cylinder 4.

[0027] Please see Figure 2 and Figure 3 The telescopic mechanism includes an electrically controlled telescopic rod 7 and a connecting seat 8. The electrically controlled telescopic rod 7 is set between the top of the frame 1 and the sliding cylinder 4. The electrically controlled telescopic rod 7 is fixedly connected to the top of the frame 1. The connecting seat 8 is fixedly set at the telescopic end of the electrically controlled telescopic rod 7. The connecting seat 8 is fixedly connected to the outer wall of the sliding cylinder 4. When the electrically controlled telescopic rod 7 is activated, the sliding cylinder 4 can be telescopically slid through the connecting seat 8. The limiting mechanism includes a limiting component 9, a limiting rod 10, and a limiting hole 11. The limiting component 9 is set at the outer side of the collecting cylinder 5 and the edge of the through groove. The limiting rod 10 is fixedly set on the bottom wall of both ends of the limiting component 9. The limiting hole 11 is opened at the edge of the through groove to match the two sets of limiting rods 10. When the limiting rods 10 at both ends of the limiting component 9 are inserted into the limiting hole 11, the collecting cylinder 5 can be stably limited.

[0028] Please see Figure 5 and Figure 6 The cutting mechanism includes an electrically controlled lifting rod 12, a lifting cylinder 13, a fixed frame 14, an annular cutting groove 15, and an annular serrated cutting blade 16. The electrically controlled lifting rod 12 is fixedly installed on the top of the support 3, and the fixed frame 14 is fixedly installed on the top inner side of the support 3. The telescopic end of the electrically controlled lifting rod 12 slides and penetrates the inner wall of the fixed frame 14. The telescopic end of the electrically controlled lifting rod 12 is fixedly installed on the lifting cylinder 13. The annular serrated cutting blade 16 is fixedly installed on the inner edge of the bottom surface of the lifting cylinder 13. An annular cutting groove 15 is opened on the inner edge of the top surface of the sliding cylinder 4. The inner diameter of the annular serrated cutting blade 16 is slightly larger than the minimum diameter of the inner cavity of the annular cutting groove 15. The inner wall of the annular serrated cutting blade 16 and the inner wall of the inner cavity of the annular cutting groove 15 are fitted with a clearance fit. The clearance fit design between the annular serrated cutting blade 16 and the annular cutting groove 15, combined with the precise displacement control of the electrically controlled lifting rod 12, ensures that the cutting edge is smooth and neat, reducing burrs.

[0029] Please see Figure 4 and Figure 5A sliding groove 17 is opened at the top of the bracket 3. A sliding rod 18 is fixedly installed inside the sliding groove 17. A sliding block 19 is slidably installed on the side wall of the sliding rod 18. The top of the sliding block 19 is fixedly connected to one side of the bottom of the sliding cylinder 4. The sliding cylinder 4 ensures translational stability through the linear guide rail structure of the sliding rod 18 and the sliding block 19. The winding mechanism includes a winding roller 20, a winding motor 21, a drive gear 22, and a driven gear 23. The winding roller 20 is rotatably installed on the other side of the top of the frame 1. The winding motor 21 is fixedly installed on the other side of the top of the frame 1. The winding motor 21 is located below one end of the winding roller 20. The drive gear 22 is installed at the output end of the winding motor 21. The driven gear 23 is fixedly installed at one end of the winding roller 20. The drive gear 22 and the driven gear 23 mesh and drive each other. When the winding motor 21 is started, it drives the driven gear 23 to rotate through the drive gear 22, thereby driving the winding roller 20 to rotate and realize automatic paper tape feeding. When a new paper tape covers the surface of the sliding cylinder 4, the above cutting-collection cycle is repeated to form continuous batch processing capability.

[0030] Please see Figure 3 and Figure 4 An electrically controlled push rod 24 is fixedly installed in the inner cavity of the lifting cylinder 13. The telescopic end of the electrically controlled push rod 24 is fixedly connected to the top of the lifting plate 6. A limiting plate 25 is fixedly installed on the top of the frame 1. The inner wall of the limiting plate 25 is in contact with the outer wall of the sliding cylinder 4. A handle 26 is fixedly installed on the outer wall of the collecting cylinder 5. A controller 27 is fixedly installed on the top outer wall of the frame 1. The controller 27 is electrically connected to the electrically controlled telescopic rod 7, the electrically controlled lifting rod 12, the electrically controlled push rod 24 and the winding motor 21. The controller 27 coordinates the coordinated work of the electrically controlled telescopic rod 7, the electrically controlled lifting rod 12, the electrically controlled push rod 24 and the winding motor 21 to realize the full automation of the process from positioning, cutting, collecting to unloading, reducing the need for manual intervention.

[0031] When using this coated kraft paper circular cutting device, the device achieves efficient and automated operation through modular collaborative design. The specific working principle is as follows:

[0032] In the initial positioning stage, the controller 27 drives the electric telescopic rod 7 to extend, and pushes the sliding cylinder 4 to move horizontally along the sliding rod 18 to directly below the lifting cylinder 13 through the connecting seat 8. At this time, the sliding block 19 at the bottom of the sliding cylinder 4 slides along the sliding rod 18 in the sliding groove 17 to ensure positioning accuracy. The limiting plate 25 fits against the outer wall of the sliding cylinder 4, so that the fixed cylinder and the sliding cylinder 4 are vertically aligned. At this time, the through groove of the collecting cylinder 5 and the lifting cylinder 13 form a coaxial cutting channel.

[0033] During the feeding and fixing stage, the coated kraft paper roll is placed on the unwinding roller 2. The paper strip is manually pulled through the bracket 3 and fixed to the surface of the take-up roller 20. At this time, the bottom surface of the paper strip naturally adheres to the top surface of the sliding cylinder 4, forming a stable cutting plane.

[0034] During the cutting execution phase, the controller 27 activates the electrically controlled lifting rod 12, whose telescopic end drives the lifting cylinder 13 to descend vertically. The annular serrated cutting blade 16 moves down with the lifting cylinder 13 and embeds into the annular cutting groove 15. The blade and the groove wall cooperate to complete the circular cutting of the paper strip. After the cutting is completed, the controller 27 activates the electrically controlled push rod 24 to push the lifting plate 6 down, pushing the cut circular paper piece from the top surface of the sliding cylinder 4 into the inner cavity of the collecting cylinder 5. After the push rod resets, the lifting plate 6 retracts into the lifting cylinder 13 to avoid interfering with subsequent cutting. Then, the electrically controlled lifting rod 12 rises and resets, and the lifting cylinder 13 separates from the sliding cylinder 4.

[0035] During the batch continuous operation stage, the controller 27 starts the winding motor 21, which drives the driven gear 23 to rotate through the drive gear 22, thereby driving the winding roller 20 to rotate and realize the automatic feeding of the paper tape. When the new paper tape covers the surface of the sliding tube 4, the above cutting-collection cycle is repeated to form continuous batch processing capability.

[0036] During the finished product removal stage, after the operation is completed, the electrically controlled telescopic rod 7 retracts, the sliding cylinder 4 returns to its initial position, and then the staff releases the cooperation between the limiting part 9 and the limiting rod 10 and limiting hole 11 on the edge of the through groove, and pulls the collection cylinder 5 out of the through groove through the handle 26 to realize the centralized removal of batch of circular paper pieces.

[0037] High-efficiency batch processing: Through the transmission design of the winding motor 21 and gear set, automatic paper tape feeding and continuous cutting are realized. Multiple batches can be processed after a single positioning, significantly improving production efficiency.

[0038] Precise cutting guarantee: The gap fit design between the annular serrated cutting blade 16 and the annular cutting groove 15, combined with the precise displacement control of the electrically controlled lifting rod 12, ensures that the cutting edge is smooth and neat, reducing burrs.

[0039] Automated integrated control: The controller 27 coordinates the work of the electrically controlled telescopic rod 7, electrically controlled lifting rod 12, electrically controlled push rod 24 and winding motor 21 to achieve full automation of the process from positioning, cutting, collection to unloading, reducing the need for manual intervention.

[0040] Convenient material handling design: The collection cylinder 5 adopts a pull-out structure, which, together with the lifting plate 6, presses down to collect the paper, so that the round paper pieces are neatly stacked inside the collection cylinder 5. In addition, the quick loading and unloading design of the limiting mechanism allows batches of finished products to be neatly stacked and taken out at one time, reducing downtime and improving the convenience of operation.

[0041] Structural stability optimization: The sliding cylinder 4 ensures translational stability through the linear guide structure of the sliding rod 18 and the sliding block 19, and the fitting design of the limiting plate 25 and the fixed cylinder enhances the axial stability during cutting, ensuring the long-term operating accuracy of the equipment.

[0042] High space utilization: The top of frame 1 integrates three major functional modules: unwinding, cutting, and rewinding. The layout is compact and reasonable, reducing the equipment footprint and adapting to the space requirements of the production line.

[0043] This device, through mechanical structural innovation and integration of electrical control system, achieves full automation, high efficiency and precision in the circular cutting of coated kraft paper, improving production efficiency while ensuring product quality stability.

[0044] Through the above steps, when using this coated kraft paper circular cutting device, the drive telescopic mechanism pushes the sliding cylinder 4 to move horizontally to directly below the lifting cylinder 13, and then the bottom surface of the paper strip naturally adheres to the top surface of the sliding cylinder 4. Subsequently, the cutting mechanism is activated, and the circular cutting of the paper strip is completed through the gap cooperation between the blade and the groove wall. Next, the drive lifting plate 6 moves down, pushing the cut circular paper strip from the top surface of the sliding cylinder 4 into the inner cavity of the collecting cylinder 5. Then, all components rise and reset, and the lifting cylinder 13 separates from the sliding cylinder 4. In addition, the winding mechanism is activated to realize automatic feeding of the paper strip. When the new paper strip covers... When the sliding cylinder 4 is in operation, batch continuous operation can be carried out according to the above steps. During the finished product removal stage, after the operation is completed, the telescopic mechanism is activated to drive the sliding cylinder 4 back to the initial position. Then, the operator pulls out the limiting mechanism and then pulls the collecting cylinder 5 out of the through slot to realize the centralized removal of batch of circular paper pieces. The collecting cylinder 5 adopts a pull-out structure, which, together with the lifting plate 6, presses down to collect the paper pieces, so that the circular paper pieces are neatly stacked inside the collecting cylinder 5. In addition, the quick loading and unloading design of the limiting mechanism allows batch finished products to be neatly stacked and removed at one time, reducing downtime and improving the convenience of operation.

[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention 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 the present invention.

Claims

1. A circular cutting device for coated kraft paper, comprising a frame (1), an unwinding roller (2) rotatably disposed on one side of the top of the frame (1), a winding mechanism rotatably disposed on the other side, and a bracket (3) fixedly disposed on the top of the frame (1), characterized in that: It also includes a sliding cylinder (4), a sliding cylinder (4) is slidably installed on the top of the frame (1), a collection cylinder (5) is embedded in the inner cavity of the sliding cylinder (4), a through groove is opened on one side of the sliding cylinder (4), the opening length of the through groove is greater than the outer diameter of the collection cylinder (5), a cutting mechanism is installed on the top of the bracket (3), a lifting plate (6) is installed in the inner cavity of the cutting mechanism, a limiting mechanism is installed on the outer side of the collection cylinder (5) and the edge of the through groove, and a telescopic mechanism is installed between the top of the frame (1) and the sliding cylinder (4).

2. The circular cutting device for coated kraft paper according to claim 1, characterized in that: The telescopic mechanism includes an electrically controlled telescopic rod (7) and a connecting seat (8). The electrically controlled telescopic rod (7) is set between the top of the frame (1) and the sliding cylinder (4). The electrically controlled telescopic rod (7) is fixedly connected to the top of the frame (1). The telescopic end of the electrically controlled telescopic rod (7) is fixedly set with the connecting seat (8). The connecting seat (8) is fixedly connected to the outer wall of the sliding cylinder (4).

3. The circular cutting device for coated kraft paper according to claim 1, characterized in that: The limiting mechanism includes a limiting component (9), a limiting rod (10), and a limiting hole (11). The limiting component (9) is provided on the outer side of the collecting cylinder (5) and at the edge of the through groove. The limiting rod (10) is fixedly provided on the bottom wall of both ends of the limiting component (9). The limiting hole (11) is opened at the edge of the through groove to match the two sets of limiting rods (10).

4. The circular cutting device for coated kraft paper according to claim 2, characterized in that: The cutting mechanism includes an electrically controlled lifting rod (12), a lifting cylinder (13), a fixed frame (14), an annular cutting groove (15), and an annular serrated cutting blade (16). The electrically controlled lifting rod (12) is fixedly installed on the top of the support (3), and the fixed frame (14) is fixedly installed on the top of the inner side of the support (3). The telescopic end of the electrically controlled lifting rod (12) slides and passes through the inner wall of the fixed frame (14). The telescopic end of the electrically controlled lifting rod (12) is fixedly installed on the lifting cylinder (13). The annular serrated cutting blade (16) is fixedly installed on the inner edge of the bottom surface of the lifting cylinder (13). An annular cutting groove (15) is opened on the inner edge of the top surface of the sliding cylinder (4). The inner diameter of the annular serrated cutting blade (16) is slightly larger than the minimum diameter of the inner cavity of the annular cutting groove (15). The inner wall of the annular serrated cutting blade (16) and the inner wall of the inner cavity of the annular cutting groove (15) are in clearance fit.

5. The circular cutting device for coated kraft paper according to claim 1, characterized in that: The bracket (3) has a sliding groove (17) at the top, a sliding rod (18) is fixedly installed inside the sliding groove (17), a sliding block (19) is slidably installed on the side wall of the sliding rod (18), and the top of the sliding block (19) is fixedly connected to one side of the bottom of the sliding cylinder (4).

6. The circular cutting device for coated kraft paper according to claim 4, characterized in that: The winding mechanism includes a winding roller (20), a winding motor (21), a drive gear (22), and a driven gear (23). The winding roller (20) is rotatably mounted on the other side of the top of the frame (1), and the winding motor (21) is fixedly mounted on the other side of the top of the frame (1). The winding motor (21) is located below one end of the winding roller (20). The drive gear (22) is mounted at the output end of the winding motor (21), and the driven gear (23) is fixedly mounted on one side end of the winding roller (20). The drive gear (22) and the driven gear (23) mesh and drive each other.

7. The circular cutting device for coated kraft paper according to claim 6, characterized in that: An electric control push rod (24) is fixedly installed in the inner cavity of the lifting cylinder (13). The telescopic end of the electric control push rod (24) is fixedly connected to the top of the lifting plate (6). A limit plate (25) is fixedly installed on the top of the frame (1). The inner wall of the limit plate (25) is in contact with the outer wall of the sliding cylinder (4). A handle (26) is fixedly installed on the outer wall of the collecting cylinder (5). A controller (27) is fixedly installed on the top outer wall of the frame (1). The controller (27) is electrically connected to the electric telescopic rod (7), the electric lifting rod (12), the electric push rod (24), and the winding motor (21).

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