Automatic cutting mechanism for paper towel rewinding

Abstract

The utility model discloses a paper towel rewinding automatic cutting mechanism relates to paper towel production technical field. The cutting mechanism includes: frame, cutting assembly is installed in the inside of frame for cutting paper towel cutting assembly, the cutting assembly includes: fixed frame, and the fixed frame fixed mounting is in the inside of frame, fixed blade, and fixed blade fixed mounting is in the inside of fixed frame. The utility model discloses the collaborative setting of pressing assembly and moving assembly, before cutting action execution, pressing assembly can steady clamping continuous paper towel, after cutting is completed, moving assembly can drive pressing assembly, and the paper head of being clamped is automatically removed cutting area and is positioned to the position of being convenient for subsequent fixed, and this design eliminates the necessity of manual paper leading of operating personnel among complex mechanical structure, and the interval time of roll change is shortened significantly.

Description

Technical Field

[0001] This utility model relates to the field of tissue paper production technology, specifically to an automatic cutting mechanism for tissue paper rewinding. Background Technology

[0002] The tissue paper rewinding machine is a core piece of equipment in the production process of household paper. Its function is to take large raw material paper (such as toilet paper, kitchen paper, etc.), rewind, emboss, and punch through processes such as rewinding, embossing, and punching, and then roll it into a master roll of a specific length and diameter. Finally, it is cut into paper rolls of commercial specifications. During the rewinding process, when the master roll reaches the preset diameter or length, it must be cut from the continuously running paper web and a new roll must be started immediately to achieve uninterrupted continuous production.

[0003] For example, patent publication number "CN213325844U", titled "A Novel Automatic Rewinding Machine", includes a workbench, a support frame fixedly installed at the bottom of the workbench, a unwinding mechanism fixedly connected to one side of the support frame, a slot in the middle of the workbench, and a cutting mechanism fixedly connected to both ends of the workbench on the slotted side. The bottom of the cutting mechanism has a knife groove at the top of the workbench. The above patent uses an infrared ranging sensor to measure the winding diameter of toilet paper. Then, the cutting mechanism cuts the wound toilet paper. After that, the first drive motor drives the winding roller to rotate and rewind the remaining toilet paper. Finally, the unwinding mechanism removes the wound toilet paper from the winding roller, improving the winding efficiency of toilet paper and increasing the production efficiency of enterprises.

[0004] When the above structure cuts continuous paper towels, after the master roll is cut, the operator needs to manually pull the paper web from one side of the cutting mechanism to the other side. This process requires crossing the inside of the cutting mechanism, which has problems such as narrow operating space and obstructed vision. Due to the inconvenience of moving the paper towel end, the roll change interval time is increased. Therefore, an automatic paper towel rewinding and cutting mechanism is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an automatic cutting mechanism for rewinding paper towels, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic cutting mechanism for rewinding tissue paper, the cutting mechanism comprising: frame; A cutting assembly for cutting the paper towel is installed inside the frame; The cutting component includes: The mounting bracket is fixedly installed inside the frame. The fixed blade is fixedly installed inside the fixed frame; A movable component is installed between the fixed frame and the frame. A movable blade, used in conjunction with a fixed blade to achieve cutting, is mounted on the moving end of a movable assembly. The outer wall of the movable blade is slidably connected to the inner wall of the frame. The pressing component, used to press the paper towel, is installed between the movable component and the fixed frame; The pressing assembly includes a first spring damper, which is mounted on the frame. The telescopic end of the first spring damper is fixedly connected to a movable part, and a clamping device is installed inside the movable part. The moving component includes a crank assembly, one end of which is rotatably connected to one side inside the frame, the outer wall of the crank assembly is slidably connected to the inner wall of the moving blade, and the outer wall of the crank assembly is adapted to the bottom end of the moving part.

[0007] Preferably, the clamping device includes a fixed clamping member, one end of which is fixed to one side of the movable member, and a first telescopic member is fixedly connected to the bottom of the movable member, and the telescopic end of the first telescopic member is fixedly connected to the movable clamping member.

[0008] Preferably, the moving component includes a primary motor for controlling the rotation of the crankshaft assembly. The primary motor is fixedly mounted on one side of the frame, and the output end of the primary motor passes through one side of the frame and is fixed to one end of the crankshaft assembly.

[0009] Preferably, the crankshaft assembly includes a first disc, one side of which is fixed to the output end of a first motor, and the other side of the first disc is fixedly connected to a first rod for contacting the bottom of the moving part to apply force to the moving part. One end of the first rod is fixedly connected to a second disc, and the outer wall of the second disc is movably connected to the inner wall of the moving blade.

[0010] Preferably, the bottom end of the movable blade is provided with an arc-shaped hole, and the outer wall of the second disk is movably connected to the inner wall of the movable blade through the arc-shaped hole.

[0011] Preferably, a guide rail is provided at the top of the frame, and the bottom end of the moving part is slidably connected to the top of the frame through the guide rail.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The automatic paper towel rewinding and cutting mechanism, through the coordinated arrangement of the pressing component and the moving component, allows the pressing component to stably clamp the continuous paper towel before the cutting action is performed. After the cutting is completed, the moving component can drive the pressing component to automatically move the clamped paper head out of the cutting area and position it in a position that is easy to fix later. This design eliminates the need for operators to manually guide the paper between complex mechanical structures, and at the same time significantly shortens the roll change interval time.

[0013] Meanwhile, the mechanical structure, which combines crank drive with spring damping, ensures that the movement of the moving blade and the pressing component is coordinated and reliable. The clamping device can hold the paper towel stably before and after cutting, preventing the paper from loosening or shifting. After the transfer is completed, the clamping of the paper towel can be released through the first telescopic component, and the moving component returns to its original position, ensuring the practicality of the pressing component. Attached Figure Description

[0014] Figure 1 This is an isometric drawing of the present invention; Figure 2 This is an isometric drawing of the pressing component of this utility model; Figure 3 This is an isometric drawing of the moving component of this utility model; Figure 4 This is a cross-sectional view of the pressing component of this utility model; Figure 5 This is a cross-sectional view of the cutting component of this utility model.

[0015] In the diagram: 1. Frame; 2. Cutting assembly; 201. Fixing frame; 202. Fixing blade; 203. Moving blade; 3. Moving assembly; 301. Motor No. 1; 302. Disc No. 1; 303. Rod No. 1; 304. Disc No. 2; 4. Pressing assembly; 401. Spring damper No. 1; 402. Moving component; 403. Fixing clamping component; 404. Telescopic component No. 1; 405. Moving clamping component. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 - Figure 5 As shown, this utility model provides a technical solution: an automatic cutting mechanism for rewinding tissue paper, the cutting mechanism comprising: Framework 1; Cutting component 2, used for cutting the paper towel, is installed inside the frame 1; Cutting component 2 includes: Fixture 201 is fixedly installed inside frame 1; The fixed blade 202 is fixedly installed inside the fixed frame 201; Movable component 3 is installed between fixed frame 201 and frame 1; The movable blade 203, which cooperates with the fixed blade 202 to achieve cutting, is installed on the movable end of the movable component 3. The outer wall of the movable blade 203 is slidably connected to the inner wall of the frame 1. Pressing component 4, used for pressing the paper towel, is installed between the moving component 3 and the fixed frame 201; The pressing assembly 4 includes a first spring damper 401, which is mounted on the frame 1. The telescopic end of the first spring damper 401 is fixedly connected to a moving part 402, and a clamping device is installed inside the moving part 402. The moving component 3 includes a crank assembly, one end of which is rotatably connected to one side inside the frame 1, the outer wall of the crank assembly is slidably connected to the inner wall of the moving blade 203, and the outer wall of the crank assembly is adapted to the bottom end of the moving part 402.

[0018] The clamping device includes a fixed clamping member 403, one end of which is fixed to one side of a movable member 402. A first telescopic member 404 is fixedly connected to the bottom inside the movable member 402, and a movable clamping member 405 is fixedly connected to the telescopic end of the first telescopic member 404.

[0019] The moving component 3 includes a primary motor 301 for controlling the rotation of the crankshaft assembly. The primary motor 301 is fixedly mounted on one side of the frame 1, and the output end of the primary motor 301 passes through one side of the frame 1 and is fixed to one end of the crankshaft assembly.

[0020] The crankshaft assembly includes a first disc 302, one side of which is fixed to the output end of a first motor 301. The other side of the first disc 302 is fixedly connected to a first rod 303 for contacting the bottom of the moving part 402 to apply force to the moving part 402. One end of the first rod 303 is fixedly connected to a second disc 304, and the outer wall of the second disc 304 is movably connected to the inner wall of the moving blade 203.

[0021] The bottom end of the movable blade 203 is provided with an arc hole, and the outer wall of the second disk 304 is movably connected to the inner wall of the movable blade 203 through the arc hole.

[0022] A guide rail is provided at the top of the frame 1, and the bottom end of the moving part 402 is slidably connected to the top of the frame 1 through the guide rail.

[0023] A paper towel rewinding device is provided on frame 1. One end of the continuous paper towel is continuously wound with the winding drum on the winding device through a guide device and a cutting device. By controlling the rotation of the winding drum, the paper towel is rewound. When the paper towel on the winding device reaches the preset diameter, the cutting mechanism cuts the continuous paper towel.

[0024] After winding is completed, the continuous paper towel is cut. The telescopic end of the first telescopic component 404 moves. The first telescopic component 404 can adopt a telescopic structure such as an electric, hydraulic, or pneumatic push rod. The moving clamp 405 moves. Through the cooperation between the moving clamp 405 and the fixed clamp 403, the continuous paper towel is clamped. Then, the output end of the first motor 301 rotates, which causes the first disc 302, the first rod 303, and the second disc 304 to rotate. During the rotation of the second disc 304, the moving blade 203 moves by cooperating with the arc hole on the moving blade 203. Through the cooperation between the moving blade 203 and the fixed blade 202, the continuous paper towel is cut. As the first motor 301 continues to rotate, the first rod 303 continues to rotate. At this point, the first rod 303 and the moving part 402 come into contact, causing the moving part 402 and the paper towel restricted on it to move. The first spring damper 401 is pulled, causing the paper towel to pass through the area between the fixed blade 202 and the moving blade 203, and thus move to the other side of the cutting assembly 2. At this point, the paper towel can be further fixed. After fixing one end of the paper towel manually or with an additional device, the telescopic end of the first telescopic part 404 retracts. At the same time, combined with the continuous rotation of the first rod 303 and the pulling force of the first spring damper 401, the moving part 402 returns to its original position. The fixed blade 202 and the moving part 402 are designed to be staggered, so as to avoid the situation where the pressing assembly 4 and the cutting assembly 2 are in contact when the moving part 402 is in motion, which would affect the movement.

[0025] By coordinating the pressing component 4 and the moving component 3, the pressing component 4 can stably clamp the continuous paper towel before the cutting action is performed. After the cutting is completed, the moving component 3 can drive the pressing component 4 to automatically move the clamped paper head out of the cutting area and position it in a position that is easy to fix later. This design eliminates the need for operators to manually guide the paper between complex mechanical structures, and at the same time significantly shortens the roll change interval. The mechanical structure with crank drive and spring damping device makes the movement of the moving blade 203 and the pressing component 4 coordinated and reliable. The clamping device can stably hold the paper towel before and after cutting to avoid the paper web from loosening or shifting. After the transfer is completed, the clamping of the paper towel can be released through the first telescopic component 404, and the moving component 402 returns to its original position, ensuring the practicality of the pressing component 4.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. An automatic cutting mechanism for rewinding paper towels, characterized in that, The cutting mechanism includes: Framework (1); Cutting component (2), a cutting component (2) for cutting paper towels is installed inside the frame (1); The cutting component (2) includes: The fixing bracket (201) is fixedly installed inside the frame (1); The fixed blade (202) is fixedly installed inside the fixing frame (201); The movable component (3) is installed between the fixed frame (201) and the frame (1); The movable blade (203) is used to cooperate with the fixed blade (202) to achieve cutting. The movable blade (203) is installed on the movable end of the movable assembly (3). The outer wall of the movable blade (203) is slidably connected to the inner wall of the frame (1). The pressing component (4), which is used to press the paper towel, is installed between the moving component (3) and the fixed frame (201); The pressing assembly (4) includes a first spring damper (401), which is mounted on the frame (1). The telescopic end of the first spring damper (401) is fixedly connected to a moving part (402), and a clamping device is installed inside the moving part (402). The moving component (3) includes a crank assembly, one end of which is rotatably connected to one side inside the frame (1), the outer wall of the crank assembly is slidably connected to the inner wall of the moving blade (203), and the outer wall of the crank assembly is adapted to the bottom end of the moving part (402).

2. The automatic paper towel rewinding and cutting mechanism according to claim 1, characterized in that: The clamping device includes a fixed clamping member (403), one end of which is fixed to one side of a movable member (402). A first telescopic member (404) is fixedly connected to the bottom of the movable member (402), and a movable clamping member (405) is fixedly connected to the telescopic end of the first telescopic member (404).

3. The automatic paper towel rewinding and cutting mechanism according to claim 1, characterized in that: The moving component (3) includes a first motor (301) for controlling the rotation of the crankshaft assembly. The first motor (301) is fixedly installed on one side of the frame (1). The output end of the first motor (301) passes through one side of the frame (1) and is fixed to one end of the crankshaft assembly.

4. The automatic paper towel rewinding and cutting mechanism according to claim 3, characterized in that: The crankshaft assembly includes a first disc (302), one side of which is fixed to the output end of a first motor (301), and the other side of the first disc (302) is fixedly connected to a first rod (303) for contacting the bottom of the moving part (402) to apply force to the moving part (402). One end of the first rod (303) is fixedly connected to a second disc (304), and the outer wall of the second disc (304) is movably connected to the inner wall of the moving blade (203).

5. The automatic paper towel rewinding and cutting mechanism according to claim 4, characterized in that: The bottom end of the movable blade (203) is provided with an arc hole, and the outer wall of the second disk (304) is movably connected to the inner wall of the movable blade (203) through the arc hole.

6. The automatic paper towel rewinding and cutting mechanism according to claim 1, characterized in that: The top of the frame (1) is provided with a guide rail, and the bottom of the moving part (402) is slidably connected to the top of the frame (1) through the guide rail.

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