Positioning and punching equipment for kraft paper production

By setting adjustment components and buffer components in the positioning and cutting equipment for kraft paper production, the inefficiency problem when cutting holes of different sizes is solved, and efficient cutting and protection of kraft paper is achieved.

CN120245121AInactive Publication Date: 2025-07-04SHUN QIANG STATIONERY (ZJGFTZ) CO LTD
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Patent Information

Application Number
CN202510577640.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-07
Publication Date
2025-07-04
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing kraft paper hole cutting equipment needs to replace cutting knife mounting brackets of different lengths when cutting holes of different sizes, resulting in low cutting efficiency.

Method used

A positioning and cutting device for kraft paper production is designed. By setting up an adjustment component, a first connecting component and a second connecting component, the distance between the lower pressing block and the rotating cylinder is changed, and the hard pressing of kraft paper is avoided through the buffer assembly, thereby realizing cutting of holes of different sizes.

Benefits of technology

Improves the practicality and work efficiency of the equipment, while protecting kraft paper to avoid damage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a positioning and punching device for kraft paper production, which comprises a bottom plate, a lifting mechanism arranged at the upper end of the bottom plate, a moving plate arranged at the front end of the lifting mechanism, a rotating cylinder rotatably connected in the moving plate, a power mechanism arranged at the upper end of the moving plate, and an adjusting assembly arranged in the rotating cylinder. A first connecting assembly and a second connecting assembly are arranged on the circumferential surface of the rotating cylinder, a buffering assembly is arranged at the end, away from the rotating cylinder, of the first connecting assembly, and a lower pressing block is arranged at the lower end of the buffering assembly; circular blades are arranged at the ends, away from the rotating cylinder, of the second connecting assemblies. By arranging the adjusting assembly, the first connecting assembly and the second connecting assembly, the distance between the lower pressing block and the rotating cylinder can be changed through the adjusting assembly under the cooperation of the first connecting assembly, and meanwhile the distance between the circular blade and the rotating cylinder can be changed under the cooperation of the second connecting assembly; in this way, holes of different sizes can be conveniently cut, the practicability of the equipment is higher, and meanwhile the working efficiency is improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of kraft paper punching, and particularly relates to a positioning punching device for kraft paper production. Background Art

[0002] Kraft paper usually maintains its natural yellowish-brown color and has very high strength. Kraft paper is widely applicable to various packaging supplies, such as paper bags, kraft paper handbags, color boxes, kraft paper gift boxes, and printed kraft paper. During the production of kraft paper, in order to meet the needs of users, it is necessary to punch holes in the kraft paper, and when punching holes in the kraft paper, a punching device needs to be used for operation.

[0003] At present, when the existing kraft paper punching device is in use, since the position of the cutting knife is not easy to change, when cutting holes of different sizes, it is necessary to replace the cutting knife mounting brackets of different lengths, which affects the cutting efficiency of the holes. Therefore, it is necessary to design a positioning punching device for kraft paper production. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art, and a positioning punching device for kraft paper production is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solution: A positioning punching device for kraft paper production, including a bottom plate, an elevating mechanism is arranged at the upper end of the bottom plate, a moving plate is arranged at the front end of the elevating mechanism, a rotating cylinder is rotatably connected inside the moving plate, a power mechanism is arranged at the upper end of the moving plate, the power mechanism is used to drive the rotating cylinder to rotate, an adjusting component is arranged inside the rotating cylinder, a first connecting component and a second connecting component are arranged on the circumferential surface of the rotating cylinder, a buffer component is arranged at the end of the first connecting component far away from the rotating cylinder, and a pressing block is arranged at the lower end of the buffer component; a circular blade is arranged at the end of the second connecting component far away from the rotating cylinder.

[0006] As a further description of the above technical solution: The elevating mechanism includes a support column, a first lead screw, a slider and a first motor. A support column is fixedly connected to the upper end of the bottom plate. A first lead screw is rotatably connected inside the support column. A slider is threadedly connected to the circumferential surface of the first lead screw. The slider is slidably connected to the support column. The front end of the slider is fixedly connected to the moving plate; a first motor is fixedly connected to the upper end of the support column, and the output end of the first motor is fixedly connected to the first lead screw.

[0007] As a further description of the above technical solution: A reinforcing plate is fixedly connected to the front end of the slider, and the upper end of the reinforcing plate is fixedly connected to the moving plate.

[0008] As a further description of the above technical solution: The power mechanism includes a second motor, a driving wheel, a driven wheel and a belt. The lower end of the moving plate is fixedly connected with a second motor. The output end of the second motor penetrates through the upper end of the moving plate and is rotatably connected with the moving plate. The output end of the second motor is fixedly connected with the driving wheel. The circumferential surface of the rotating cylinder is fixedly connected with the driven wheel. The driven wheel and the driving wheel are connected by a belt.

[0009] As a further description of the above technical solution: The adjusting component includes a second lead screw, a handle, a moving column and a connecting block. The second lead screw is rotatably connected inside the rotating cylinder. The circumferential surface of the second lead screw is threadedly connected with the moving column. The moving column is slidably connected with the rotating cylinder. The upper circumferential surface of the moving column is fixedly connected with a connecting block. The upper end of the second lead screw is fixedly connected with a handle.

[0010] As a further description of the above technical solution: The first connection component includes a first support ring, a rotating ring, a first rotating seat, a second support ring, a moving cylinder, a first moving rod and a first transmission rod. One end of the connecting block away from the moving column is fixedly connected with a first support ring. The surface of the first support ring is slidably connected with a rotating ring. The circumferential surface of the rotating ring is fixedly connected with a first rotating seat. The first transmission rod is rotatably connected inside the first rotating seat. One end of the first transmission rod away from the first rotating seat is rotatably connected with a first moving rod; The circumferential surface of the rotating cylinder is fixedly connected with a second support ring. The surface of the second support ring is slidably connected with a moving cylinder. The moving cylinder is slidably connected with the first moving rod.

[0011] As a further description of the above technical solution: The buffer component includes a fixed plate, a second moving rod, a spring and a connecting plate. One end of the first moving rod away from the rotating cylinder is fixedly connected with a fixed plate. The second moving rod is slidably connected inside the fixed plate. The lower end of the second moving rod is fixedly connected with a connecting plate. The lower end of the connecting plate is fixedly connected with the pressing block; A spring is fixedly connected between the connecting plate and the fixed plate. The second moving rod is located in the middle of the spring.

[0012] As a further description of the above technical solution: The second connection component includes a second rotating seat, a second transmission rod, a fixed cylinder and a moving frame. The lower circumferential surface of the moving column is fixedly connected with a second rotating seat. The second transmission rod is rotatably connected inside the second rotating seat. One end of the second transmission rod away from the second rotating seat is rotatably connected with a moving frame. The moving frame is in an L shape. The lower end of the moving frame is rotatably connected with a circular blade inside; The circumferential surface of the rotating cylinder is fixedly connected with a fixed cylinder. The fixed cylinder is slidably connected with the moving frame.

[0013] As a further description of the above technical solution: A sliding hole is formed on the circumferential surface of the rotating cylinder. Both the connecting block and the second rotating seat are located inside the sliding hole and are slidably connected to the sliding hole.

[0014] The present invention has the following beneficial effects: 1. Compared with the prior art, this positioning and hole-cutting device for kraft paper production can change the distance between the pressing block and the rotating cylinder by setting the adjusting component, the first connecting component and the second connecting component, and by using the adjusting component and then in cooperation with the first connecting component. At the same time, in cooperation with the second connecting component, the distance between the circular blade and the rotating cylinder can be changed, so that it is convenient to cut holes of different sizes, making the device more practical and improving work efficiency at the same time.

[0015] 2. Compared with the prior art, this positioning and hole-cutting device for kraft paper production, by setting the fixed plate, the second moving rod, the spring and the connecting plate, when the lifting mechanism descends, it will drive the pressing block to move downward. After the pressing block contacts the bottom plate, as the lifting mechanism continues to move downward, it will squeeze the connecting plate to move upward, thereby compressing the spring. The compressed spring gives a reaction force to the pressing block, so that the pressing block tightly presses the kraft paper. In this way, during the process of fixing the kraft paper, the pressing block is prevented from hard-pressing the kraft paper, thus protecting the kraft paper and preventing the kraft paper from being damaged. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a first perspective of a positioning and hole-cutting device for kraft paper production proposed by the present invention; Figure 2 It is a schematic structural diagram of a second perspective of a positioning and hole-cutting device for kraft paper production proposed by the present invention; Figure 3 It is a positioning and hole-cutting device for kraft paper production proposed by the present invention Figure 2 Enlarged view of part A; Figure 4 It is a schematic internal structure diagram of a positioning and hole-cutting device for kraft paper production proposed by the present invention; Figure 5 It is a positioning and hole-cutting device for kraft paper production proposed by the present invention Figure 4 Enlarged view of part B; Figure 6 It is a positioning and hole-cutting device for kraft paper production proposed by the present invention Figure 4 Enlarged view of part C.

[0017] Legend Explanation: 1. Base plate; 2. Lifting mechanism; 201. Support column; 202. First lead screw; 203. Slide block; 204. First motor; 3. Reinforcement plate; 4. Moving plate; 5. Power mechanism; 501. Second motor; 502. Driving wheel; 503. Driven wheel; 504. Belt; 6. Rotating cylinder; 7. Adjusting assembly; 701. Second lead screw; 702. Handle; 703. Moving column; 704. Connecting block; 8. First connecting assembly; 801. First support ring; 802. Rotating ring; 803. First rotating seat; 804. Second support ring; 805. Moving cylinder; 806. First moving rod; 807. First transmission rod; 9. Buffer assembly; 901. Fixed plate; 902. Second moving rod; 903. Spring; 904. Connecting plate; 10. Pressing block; 11. Second connecting assembly; 1101. Second rotating seat; 1102. Second transmission rod; 1103. Fixed cylinder; 1104. Moving frame; 12. Circular blade; 13. Slide hole. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Referring to Figures 1-6 , a positioning and hole-cutting device for kraft paper production provided by the present invention includes a base plate 1. A lifting mechanism 2 is arranged at the upper end of the base plate 1. A moving plate 4 is arranged at the front end of the lifting mechanism 2. A rotating cylinder 6 is rotatably connected inside the moving plate 4. A power mechanism 5 is arranged at the upper end of the moving plate 4. The power mechanism 5 is used to drive the rotating cylinder 6 to rotate. An adjusting assembly 7 is arranged inside the rotating cylinder 6. A first connecting assembly 8 and a second connecting assembly 11 are arranged on the circumferential surface of the rotating cylinder 6. One end of the first connecting assembly 8 away from the rotating cylinder 6 is provided with a buffer assembly 9. A pressing block 10 is arranged at the lower end of the buffer assembly 9; one end of the second connecting assembly 11 away from the rotating cylinder 6 is provided with a circular blade 12.

[0020] Specifically, first, the positions of the circular blade 12 and the pressing block 10 are changed according to requirements by using the adjusting component 7. Then, with the cooperation of the first connecting component 8, the distance between the pressing block 10 and the rotating cylinder 6 can be changed. At the same time, with the cooperation of the second connecting component 11, the distance between the circular blade 12 and the rotating cylinder 6 can be changed. This makes it convenient to cut holes of different sizes, improving the practicability of the device and also enhancing the work efficiency. After adjusting the position of the circular blade 12, the lifting mechanism 2 descends, driving the pressing block 10 and the circular blade 12 to move downward. After the pressing block 10 contacts the bottom plate 1, the lifting mechanism 2 continues to descend until the circular blade 12 contacts the kraft paper. When the lifting mechanism 2 descends, with the cooperation of the buffer component 9, the pressing block 10 can be prevented from pressing the kraft paper rigidly, thus protecting the kraft paper and avoiding damage to it. After fixing the kraft paper, the power mechanism 5 works to drive the rotating cylinder 6 to rotate, and then the circular blade 12 can cut holes in the kraft paper.

[0021] The lifting mechanism 2 includes a support column 201, a first lead screw 202, a slider 203, and a first motor 204. The upper end of the bottom plate 1 is fixedly connected with the support column 201. The first lead screw 202 is rotatably connected inside the support column 201. The circumferential surface of the first lead screw 202 is threadedly connected with the slider 203. The slider 203 is slidably connected with the support column 201. The front end of the slider 203 is fixedly connected with the moving plate 4. The upper end of the support column 201 is fixedly connected with the first motor 204. The output end of the first motor 204 is fixedly connected with the first lead screw 202. During operation, the first motor 204 works. At this time, under the action of the first lead screw 202, the slider 203 can be driven to slide inside the support column 201, thereby driving the moving plate 4 to move up and down, which facilitates the operation of cutting holes in the kraft paper.

[0022] The front end of the slider 203 is fixedly connected with a reinforcement plate 3. The upper end of the reinforcement plate 3 is fixedly connected with the moving plate 4. During operation, by setting the reinforcement plate 3, the stability of the connection between the moving plate 4 and the slider 203 can be improved under the action of the reinforcement plate 3.

[0023] The power mechanism 5 includes a second motor 501, a driving wheel 502, a driven wheel 503, and a belt 504. The lower end of the moving plate 4 is fixedly connected with the second motor 501. The output end of the second motor 501 penetrates the upper end of the moving plate 4 and is rotatably connected with the moving plate 4. The output end of the second motor 501 is fixedly connected with the driving wheel 502. The circumferential surface of the rotating cylinder 6 is fixedly connected with the driven wheel 503. The driven wheel 503 and the driving wheel 502 are connected by the belt 504. During operation, the second motor 501 works. At this time, under the cooperation of the driving wheel 502, the driven wheel 503, and the belt 504, the rotating cylinder 6 can be driven to rotate.

[0024] The adjusting assembly 7 includes a second lead screw 701, a handle 702, a moving column 703 and a connecting block 704. The second lead screw 701 is rotatably connected inside the rotating cylinder 6. The circumferential surface of the second lead screw 701 is threadedly connected with the moving column 703. The moving column 703 is slidably connected to the rotating cylinder 6. The upper circumferential surface of the moving column 703 is fixedly connected with the connecting block 704. The upper end of the second lead screw 701 is fixedly connected with the handle 702. During operation, when the handle 702 is rotated, under the action of the second lead screw 701, the moving column 703 can be driven to slide inside the rotating cylinder 6, thereby driving the connecting block 704 to move.

[0025] The first connecting assembly 8 includes a first support ring 801, a rotating ring 802, a first rotating seat 803, a second support ring 804, a moving cylinder 805, a first moving rod 806 and a first transmission rod 807. One end of the connecting block 704 away from the moving column 703 is fixedly connected with the first support ring 801. The rotating ring 802 is slidably connected to the surface of the first support ring 801. The circumferential surface of the rotating ring 802 is fixedly connected with the first rotating seat 803. The first transmission rod 807 is rotatably connected inside the first rotating seat 803. One end of the first transmission rod 807 away from the first rotating seat 803 is rotatably connected with the first moving rod 806; the circumferential surface of the rotating cylinder 6 is fixedly connected with the second support ring 804. The moving cylinder 805 is slidably connected to the surface of the second support ring 804. The moving cylinder 805 is slidably connected to the first moving rod 806. During operation, with the movement of the connecting block 704, under the cooperation of the first support ring 801, the rotating ring 802, the first rotating seat 803 and the first transmission rod 807, the first moving rod 806 can be driven to slide inside the moving cylinder 805, so as to change the distance between the pressing block 10 and the rotating cylinder 6; during the hole-cutting operation, under the cooperation of the first support ring 801, the rotating ring 802 and the second support ring 804, it is convenient for the rotating cylinder 6 to rotate, so that the pressing block 10 can stably press on the kraft paper, effectively avoiding the offset of the kraft paper during the hole-cutting operation and being beneficial to improving the quality of the hole-cutting.

[0026] The buffer assembly 9 includes a fixing plate 901, a second moving rod 902, a spring 903, and a connecting plate 904. One end of the first moving rod 806 away from the rotating cylinder 6 is fixedly connected to the fixing plate 901. The second moving rod 902 is slidably connected inside the fixing plate 901. The lower end of the second moving rod 902 is fixedly connected to the connecting plate 904, and the lower end of the connecting plate 904 is fixedly connected to the pressing block 10. A spring 903 is fixedly connected between the connecting plate 904 and the fixing plate 901, and the second moving rod 902 is located at the middle position of the spring 903. During operation, when the lifting mechanism 2 descends, it will drive the pressing block 10 to move downward. After the pressing block 10 contacts the bottom plate 1, as the lifting mechanism 2 continues to move downward, it will squeeze the connecting plate 904 to move upward, thereby compressing the spring 903. The compressed spring 903 gives a reaction force to the pressing block 10, so that the pressing block 10 tightly presses the kraft paper. In this way, during the process of fixing the kraft paper, the pressing block 10 is prevented from pressing the kraft paper rigidly, thereby protecting the kraft paper and preventing the kraft paper from being damaged.

[0027] The second connecting assembly 11 includes a second rotating seat 1101, a second transmission rod 1102, a fixed cylinder 1103, and a moving frame 1104. The lower circumferential surface of the moving column 703 is fixedly connected to the second rotating seat 1101. The second transmission rod 1102 is rotatably connected inside the second rotating seat 1101. One end of the second transmission rod 1102 away from the second rotating seat 1101 is rotatably connected to the moving frame 1104. The moving frame 1104 is in an L shape, and a round blade 12 is rotatably connected inside the lower end of the moving frame 1104. The circumferential surface of the rotating cylinder 6 is fixedly connected to the fixed cylinder 1103, and the fixed cylinder 1103 is slidably connected to the moving frame 1104. During operation, as the moving column 703 moves, with the cooperation of the second rotating seat 1101 and the second transmission rod 1102, the moving frame 1104 can be driven to slide inside the fixed cylinder 1103, so as to change the distance between the round blade 12 and the rotating cylinder 6. In this way, it is convenient for the round blade 12 to cut holes with different diameters, thereby improving the practicability of the device. During the hole-cutting operation, as the rotating cylinder 6 rotates, with the cooperation of the second rotating seat 1101, the second transmission rod 1102, the fixed cylinder 1103, and the moving frame 1104, the round blade 12 can be driven to rotate. As the round blade 12 rotates, the kraft paper can be cut.

[0028] A sliding hole 13 is formed on the circumferential surface of the rotating cylinder 6. The connecting block 704 and the second rotating seat 1101 are both located inside the sliding hole 13 and are slidably connected to the sliding hole 13. During operation, by providing the sliding hole 13, it is convenient for the connecting block 704 and the second rotating seat 1101 to move under the action of the sliding hole 13.

[0029] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A positioning and hole-cutting device for kraft paper production, comprising a bottom plate (1), characterized in that: A lifting mechanism (2) is provided at the upper end of the bottom plate (1). A moving plate (4) is provided at the front end of the lifting mechanism (2). A rotating cylinder (6) is rotatably connected inside the moving plate (4). A power mechanism (5) is provided at the upper end of the moving plate (4). The power mechanism (5) is used to drive the rotating cylinder (6) to rotate. An adjusting component (7) is provided inside the rotating cylinder (6). A first connecting component (8) and a second connecting component (11) are provided on the circumferential surface of the rotating cylinder (6). One end of the first connecting component (8) far from the rotating cylinder (6) is provided with a buffer component (9). A pressing block (10) is provided at the lower end of the buffer component (9). One end of the second connecting component (11) far from the rotating cylinder (6) is provided with a circular blade (12).

2. The positioning and hole-cutting device for kraft paper production according to claim 1, characterized in that: The lifting mechanism (2) includes a support column (201), a first lead screw (202), a slider (203), and a first motor (204). A support column (201) is fixedly connected to the upper end of the bottom plate (1). A first lead screw (202) is rotatably connected inside the support column (201). A slider (203) is threadedly connected to the circumferential surface of the first lead screw (202). The slider (203) is slidably connected to the support column (201). The front end of the slider (203) is fixedly connected to the moving plate (4). A first motor (204) is fixedly connected to the upper end of the support column (201). The output end of the first motor (204) is fixedly connected to the first lead screw (202).

3. The positioning and hole-cutting device for kraft paper production according to claim 2, wherein: A reinforcing plate (3) is fixedly connected to the front end of the slider (203). The upper end of the reinforcing plate (3) is fixedly connected to the moving plate (4).

4. A positioning and hole-cutting device for kraft paper production according to claim 1, characterized in that: The power mechanism (5) includes a second motor (501), a driving wheel (502), a driven wheel (503), and a belt (504). A second motor (501) is fixedly connected to the lower end of the moving plate (4). The output end of the second motor (501) penetrates through the upper end of the moving plate (4) and is rotatably connected to the moving plate (4). The output end of the second motor (501) is fixedly connected to the driving wheel (502). A driven wheel (503) is fixedly connected to the circumferential surface of the rotating cylinder (6). The driven wheel (503) is connected to the driving wheel (502) through the belt (504).

5. A positioning and hole-cutting device for kraft paper production according to claim 1, characterized in that: The adjusting component (7) includes a second lead screw (701), a handle (702), a moving column (703), and a connecting block (704). A second lead screw (701) is rotatably connected inside the rotating cylinder (6). A moving column (703) is threadedly connected to the circumferential surface of the second lead screw (701). The moving column (703) is slidably connected to the rotating cylinder (6). A connecting block (704) is fixedly connected to the circumferential surface of the upper end of the moving column (703). A handle (702) is fixedly connected to the upper end of the second lead screw (701).

6. The positioning and hole-cutting device for kraft paper production according to claim 5, wherein: The first connection component (8) includes a first support ring (801), a rotating ring (802), a first rotating seat (803), a second support ring (804), a moving cylinder (805), a first moving rod (806) and a first transmission rod (807). One end of the connection block (704) far from the moving column (703) is fixedly connected with a first support ring (801). The surface of the first support ring (801) is slidably connected with a rotating ring (802). The circumferential surface of the rotating ring (802) is fixedly connected with a first rotating seat (803). The first transmission rod (807) is rotatably connected inside the first rotating seat (803). One end of the first transmission rod (807) far from the first rotating seat (803) is rotatably connected with a first moving rod (806). The circumferential surface of the rotating cylinder (6) is fixedly connected with a second support ring (804). The surface of the second support ring (804) is slidably connected with a moving cylinder (805). The moving cylinder (805) and the first moving rod (806) are slidably connected to each other.

7. A positioning and hole-cutting device for kraft paper production according to claim 6, characterized in that: The buffer component (9) includes a fixed plate (901), a second moving rod (902), a spring (903) and a connecting plate (904). One end of the first moving rod (806) far from the rotating cylinder (6) is fixedly connected with a fixed plate (901). The second moving rod (902) is slidably connected inside the fixed plate (901). The lower end of the second moving rod (902) is fixedly connected with a connecting plate (904). The lower end of the connecting plate (904) is fixedly connected with the pressing block (10). A spring (903) is fixedly connected between the connecting plate (904) and the fixed plate (901). The second moving rod (902) is located at the middle position of the spring (903).

8. A positioning and hole-cutting device for kraft paper production according to claim 5, characterized in that: The second connection component (11) includes a second rotating seat (1101), a second transmission rod (1102), a fixed cylinder (1103) and a moving frame (1104). The circumferential surface of the lower end of the moving column (703) is fixedly connected with a second rotating seat (1101). The second transmission rod (1102) is rotatably connected inside the second rotating seat (1101). One end of the second transmission rod (1102) far from the second rotating seat (1101) is rotatably connected with a moving frame (1104). The moving frame (1104) is in an L shape. The lower end of the moving frame (1104) is rotatably connected with a circular blade (12) inside. The circumferential surface of the rotating cylinder (6) is fixedly connected with a fixed cylinder (1103). The fixed cylinder (1103) and the moving frame (1104) are slidably connected to each other.

9. A positioning and hole-cutting device for kraft paper production according to claim 8, characterized in that: A sliding hole (13) is formed on the circumferential surface of the rotating cylinder (6). The connection block (704) and the second rotating seat (1101) are both located inside the sliding hole (13) and are slidably connected with the sliding hole (13).