Horizontal cut-off knife device for double-station winding and automatic winding and roll changing method
By using a combination of a cutting pressure roller cylinder and a through-beam photoelectric eye in a roll-to-roll printing machine, the neatness and compactness of the newly rolled material after cutting are achieved, solving the problems of complex structure and high cost of traditional devices, simplifying the equipment structure and reducing maintenance costs.
Patent Information
- Application Number
- CN202512005349.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-02-24
AI Technical Summary
Traditional roll-to-roll printing presses with dual-station winding and cutting devices have insufficient uniformity and compactness of the newly wound rolls after cutting, and their complex structure and high cost require the addition of pressure roller devices.
The device adopts a dual-station horizontal cutter for winding, and controls the position of the cutting pressure roller by a cylinder for the cutting pressure roller. It also combines a through-beam photoelectric eye for precise position control, enabling brief contact during cutting and use of the winding pressure roller after cutting. This simplifies the structure and reduces the cost of purchasing, repairing and maintaining the machine.
It achieves uniformity and compactness in the newly rolled-up parts after cutting, simplifies the device structure, and reduces the cost of purchasing and maintaining the machine.
Smart Images
Figure CN121553741A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of printing technology, specifically relating to a horizontal cutting device for dual-station winding, and also to a method for automatic winding and changing rolls using the aforementioned horizontal cutting device for dual-station winding. Background Technology
[0002] In traditional roll-to-roll printing presses, the cutting pressure roller in the dual-station take-up and cutting device briefly contacts the roll during the cutting process. After the cutting action is completed, it separates from the roll and returns to the starting position to wait for the next cut. In order to ensure the neatness and compactness of the new roll after cutting, a pressure roller device is often added to the take-up unit. The pressure roller is pressed onto the new roll by manually activating the pneumatic actuator. This structure is complex and costly. Summary of the Invention
[0003] The first objective of this invention is to provide a horizontal cutting device for dual-station winding, which solves the problems of uniformity and compactness of the new roll after cutting, and eliminates the need for additional pressure roller devices, thus simplifying the structure and reducing the cost of purchasing and maintenance.
[0004] A second objective of this invention is to provide a method for automatic winding and changing of rolls using the aforementioned dual-station horizontal cutter device for winding.
[0005] The first technical solution adopted in this invention is: a horizontal cutting device for dual-station winding, including a roll-to-roll printing machine frame and an L-shaped frame, wherein two sets of symmetrically arranged air shafts are installed on the roll-to-roll printing machine frame; The L-shaped frame is equipped with a cutting device, which includes a cutting blade, a cutting pressure roller, and a position control device.
[0006] The invention is further characterized by: The L-shaped frame also has two moving plates facing each other. The cutting pressure roller is connected to the moving plates through bearings, and the cutting blade is set on the moving plates through a rotating shaft.
[0007] A cutting pressure roller cylinder is also horizontally fixed on the L-shaped frame. The cutting pressure roller cylinder is set on the L-shaped frame through a cylinder tailstock. The working end of the cutting pressure roller cylinder is connected to a cylinder connector, and the cylinder connector is connected to the moving plate through a pin. A pneumatic pressure conversion device is installed on the cutting pressure roller cylinder; The cutting blade is controlled by the cutting blade assembly; The mobile board is driven by a driver component.
[0008] The cutting blade assembly includes a cutting blade cylinder fixedly mounted on a movable plate, with the working end of the cutting blade cylinder being movably connected to the cutting blade.
[0009] The drive assembly includes a geared motor mounted on an L-shaped frame. The working end of the geared motor is connected to a gear. A first precision lead screw that meshes with the gear is also rotatably mounted on the L-shaped frame. The first precision lead screw is arranged parallel to the cutting pressure roller cylinder. An electromagnetic clutch is connected to one end of the first precision lead screw near the frame of the roll material printing machine. The other end of the electromagnetic clutch is connected to a second precision lead screw. The other end of the second precision lead screw is connected to a moving plate.
[0010] The L-shaped frame is also equipped with sensors, which are connected to the geared motor via signal transmission.
[0011] The position control device is a through-beam photoelectric sensor that works in conjunction with the cutting pressure roller. The through-beam photoelectric sensors are symmetrically arranged on two moving plates.
[0012] The second technical solution adopted in this invention is: a dual-station automatic winding and changing method, using a dual-station horizontal cutting device for winding, the specific method of which is as follows: During the cutting process, the pressure of the cutting roller cylinder is adjusted to atmospheric pressure by the air pressure conversion device for cutting. After the cutting is completed, the cutting roller cylinder controls the cutting roller to not separate from the new roll, and at the same time controls the air pressure on the cutting roller cylinder to a small air pressure to ensure that the force of the cutting roller pressing on the new roll always remains at the set value, ensuring the neatness and compactness of the new roll. After cutting, the cutting pressure roller retracts and detaches from the new roll. It is controlled by the position control device to retract to the system-set position L1, but does not return to the starting distance L2. When the cutting pressure roller reaches the set position, the control system controls the reduction motor to stop. At this time, the cutting pressure roller maintains a certain distance L1 from the new roll. As the roll increases in size, the distance between the roll and the cutting pressure roller becomes smaller and smaller. When the roll becomes so large that it blocks the signal of the photoelectric sensor, the system controls the reduction motor to start, and the cutting pressure roller retracts. The above process is repeated to achieve the intermittent winding function.
[0013] The invention is further characterized by: The method for calculating the retraction distance of the cutting pressure roller is as follows: The sensor detects the number of teeth of the rotating gear and feeds back the pulse signal to the equipment PLC to control the start and stop of the geared motor, thereby controlling the distance set when the cutting pressure roller cylinder is used for intermittent winding function; Alternatively, a rotary encoder can be installed on the gear, and the sensor detects the angle of gear rotation to calculate the retraction dimension of the pressure roller.
[0014] The beneficial effects of this invention are: This invention relates to a dual-station horizontal cutter device for winding. The position of the cutting pressure roller is controlled by a cutting pressure roller cylinder, and precise position control is achieved through a through-beam photoelectric eye. This allows the cutting pressure roller to be used as a cutting pressure roller that makes brief contact during cutting, as a winding pressure roller after cutting, and also as an intermittent winding function. This solves the problems of uniformity and compactness of the new roll after cutting, and eliminates the need for additional pressure roller devices, simplifying the structure and reducing the cost of purchasing and maintenance. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a dual-station take-up and cutting device for a traditional roll-to-roll printing press; Figure 2 This is a schematic diagram of the overall structure of the horizontal cutter device for dual-station winding of the present invention; Figure 3 This is a schematic diagram of the cutting position of the horizontal cutter device for dual-station winding of the present invention; Figure 4 This is a schematic diagram of the structure of the cutting roller of the present invention when it is used as a receiving roller; Figure 5 This is an enlarged schematic diagram of the gear and sensor structure in the horizontal cutting device of the present invention; Figure 6 This is a schematic diagram of the horizontal cutting device of the present invention when the cutting pressure roller is used for intermittent winding after cutting; Figure 7 This is a schematic diagram of the structure of the horizontal cutter device for dual-station winding of the present invention when it returns to its original position.
[0016] In the diagram, 1. substrate, 2. cutting blade, 3. geared motor, 4. gear, 5. sensor, 6. cutting blade cylinder, 7. cutting pressure roller cylinder, 8. cutting pressure roller, 9. through-beam photoelectric eye, 10. air shaft, 11. take-up pressure roller, 12. pressure roller cylinder, 13. winding, 14. moving plate, 15. cylinder connector, 16. pin, 17. first precision lead screw, 18. electromagnetic clutch, 19. second precision lead screw, 20. cylinder tailstock, 21. L-shaped frame. Detailed Implementation
[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0018] like Figure 1As shown, in the traditional roll-to-roll printing machine with dual-station take-up and cutter device, the cutting pressure roller briefly contacts the new roll of material during the cutting process. After the cutting blade cuts the substrate 1, the substrate is rewound onto the air shaft 10, and the cutting pressure roller separates from the roll of material and returns to the starting position to wait for the next cut. In order to ensure the neatness and compactness of the new roll of material after cutting, the take-up pressure roller 11 needs to press on the new roll. The pressure is controlled by the air pressure of the pressure roller cylinder 12.
[0019] This invention provides a horizontal cutting device for dual-station winding, such as... Figures 2-4 As shown, it includes a roll-to-roll printing machine frame and an L-shaped frame 21, and two sets of symmetrically arranged air shafts 10 are installed on the roll-to-roll printing machine frame; The L-shaped frame 21 is equipped with a cutting device, which includes a cutting blade 2, a cutting pressure roller 8, and a position control device.
[0020] Furthermore, two movable plates 14 are also provided on the L-shaped frame 21. The cutting pressure roller 8 is connected to the movable plate 14 through a bearing. The cutting blade 2 is mounted on the movable plate 14 through a rotating shaft. The middle part of the cutting blade 2 is rotatably mounted on the movable plate 14.
[0021] Furthermore, a cutting pressure roller cylinder 7 is also fixedly installed on the L-shaped frame and is horizontally set. The cutting pressure roller cylinder 7 is set on the L-shaped frame 21 through the cylinder tail seat 20. The working end of the cutting pressure roller cylinder 7 is connected to the cylinder connector 15, and the cylinder connector 15 is connected to the moving plate 14 through the pin 16. A pressure conversion device is installed on the cutting pressure roller cylinder 7. This invention innovatively installs a pressure conversion device on the cutting pressure roller cylinder 7, adjusting the pressure of the cutting pressure roller cylinder 7 to atmospheric pressure during the cutting process to ensure smooth cutting. After cutting, it controls the cutting pressure roller 8 to prevent it from detaching from the new roll, while simultaneously controlling the air pressure on the cutting pressure roller cylinder 7 to a low pressure. The air pressure is controlled by a precision pressure valve to ensure that the force of the cutting pressure roller 8 pressing on the new roll always remains at the set value, guaranteeing the neatness and compactness of the newly wound roll. The compactness can also be adjusted by the air pressure on the cutting pressure roller cylinder 7. This method eliminates the need for a take-up pressure roller 11, simplifying the structure and reducing machine purchase and maintenance costs.
[0022] The cutting blade 2 controls the cutting through the cutting blade assembly.
[0023] Furthermore, the cutting blade assembly includes a cutting blade cylinder 6 fixedly mounted on a movable plate, with the working end of the cutting blade cylinder 6 movably connected to the cutting blade 2.
[0024] The mobile board is driven by a driver component.
[0025] Furthermore, the drive assembly includes a geared motor 3 mounted on an L-shaped frame 21. The working end of the geared motor 3 is connected to a gear 4. A first precision lead screw 17, which meshes with the gear 4, is also rotatably mounted on the L-shaped frame 21. The first precision lead screw 17 is arranged parallel to the cutting pressure roller cylinder 7. An electromagnetic clutch 18 is connected to one end of the first precision lead screw 17 near the frame of the roll material printing machine. The other end of the electromagnetic clutch 18 is connected to a second precision lead screw 19. The other end of the second precision lead screw 19 is connected to a moving plate 14.
[0026] Furthermore, such as Figure 5 As shown, the L-shaped frame 21 is also equipped with a sensor 5, which is connected to the geared motor 3 via a signal connection. During operation, the sensor 5 detects the number of teeth rotating on the gear 4 and uses pulse signals to feed back to the equipment PLC to control the start and stop of the geared motor 3, thereby controlling the cutting pressure roller cylinder 7 when used for intermittent winding. Figure 6 middle L1 The distance.
[0027] Furthermore, the position control device is a through-beam photoelectric eye 9 that cooperates with the cutting pressure roller 8. The through-beam photoelectric eyes 9 are symmetrically arranged on the two moving plates 14.
[0028] This invention innovatively incorporates a position control device, which can precisely control the position of the cutting pressure roller 8, enabling an intermittent winding method and ensuring the neatness of the winding. The method is as follows: after the cutting action is completed, the cutting pressure roller 8 retracts and disengages from the new roll, but does not return to the starting position; instead, it retracts to a position set by the system, such as... Figure 6 As shown, after the system is set to the position, sensor 5 calculates the retraction distance of the cutting roller 8 by detecting the number of pulse signals reflected from the tooth tip and tooth root during the rotation of gear 4 (another detection method is to install a rotary encoder on gear 4 to detect the rotation angle of the gear, thereby calculating the retraction dimension of the roller). When the set position is reached, the control system controls the cutting roller 8 to stop, at which point the cutting roller maintains a distance from the new roll. As the roll increases in size, the distance between the roll and the cutting roller 8 decreases. When the roll becomes large enough to block the signal of the photoelectric sensor 9 shown in the diagram, the system controls the cutting roller 8 to retract, thus repeating the above process to achieve intermittent winding and ensure winding neatness.
[0029] When not working, such as Figure 7 As shown, under the action of the geared motor 3 and the cutting pressure roller cylinder 7, the cutting device returns to its original position. L2 Place.
[0030] The present invention provides a dual-station automatic winding and changing method, which utilizes the aforementioned dual-station horizontal cutting device for winding. The specific method is as follows: During the cutting process, the pressure of the cutting roller cylinder is adjusted to atmospheric pressure by the air pressure conversion device for cutting. After the cutting is completed, the cutting roller cylinder controls the cutting roller to not separate from the new roll, and at the same time controls the air pressure on the cutting roller cylinder to a small air pressure to ensure that the force of the cutting roller pressing on the new roll always remains at the set value, ensuring the neatness and compactness of the new roll. After cutting, the cutting roller retracts and detaches from the new roll. It is controlled by the position control device to retract to the system-set position L1, but does not return to the starting distance L2. When the cutting roller reaches the set position, the control system controls the reduction motor 3 to stop. At this time, the cutting roller maintains a certain distance L1 from the new roll. As the roll increases in size, the distance between the roll and the cutting roller decreases. When the roll becomes so large that it blocks the signal of the photoelectric eye 9, the system controls the reduction motor 3 to start, and the cutting roller 8 retracts. The above process is repeated to achieve the intermittent winding function.
[0031] The method for calculating the retraction distance of the cutting pressure roller is as follows: Sensor 5 detects the number of teeth rotating in gear 4 and controls the start and stop of geared motor 3 by feeding back pulse signals to the equipment PLC, thereby controlling the distance set when the cutting pressure roller cylinder 7 is used for intermittent winding function; Alternatively, a rotary encoder can be installed on gear 4, and sensor 5 can detect the angle of rotation of gear 4 to calculate the retraction dimension of the pressure roller.
[0032] Example 1 This embodiment provides a horizontal cutting device for dual-station winding, such as... Figures 2-4 As shown, it includes a roll-to-roll printing machine frame and an L-shaped frame 21, and two sets of symmetrically arranged air shafts 10 are installed on the roll-to-roll printing machine frame; The L-shaped frame 21 is equipped with a cutting device, which includes a cutting blade 2, a cutting pressure roller 8, and a position control device.
[0033] Furthermore, two movable plates 14 are also provided on the L-shaped frame 21. The cutting pressure roller 8 is connected to the movable plate 14 through a bearing. The cutting blade 2 is mounted on the movable plate 14 through a rotating shaft. The middle part of the cutting blade 2 is rotatably mounted on the movable plate 14.
[0034] Example 2 This embodiment provides a horizontal cutting device for dual-station winding. In addition to the technical structure of embodiment 1, a cutting pressure roller cylinder 7 is also fixedly installed on the L-shaped frame and horizontally arranged. The cutting pressure roller cylinder 7 is set on the L-shaped frame 21 through the cylinder tail seat 20. The working end of the cutting pressure roller cylinder 7 is connected to the cylinder connector 15, and the cylinder connector 15 is connected to the moving plate 14 through the pin 16.
[0035] A pressure conversion device is installed on the cutting pressure roller cylinder 7. This invention innovatively installs a pressure conversion device on the cutting pressure roller cylinder 7, adjusting the pressure of the cutting pressure roller cylinder 7 to atmospheric pressure during the cutting process to ensure smooth cutting. After cutting, it controls the cutting pressure roller 8 to remain attached to the new roll, while simultaneously controlling the air pressure on the cutting pressure roller cylinder 7 to a low pressure. The air pressure is controlled by a precision pressure valve to ensure that the force of the cutting pressure roller 8 pressing on the new roll always remains at the set value, guaranteeing the neatness and compactness of the newly wound roll. The compactness can also be adjusted by the air pressure on the cutting pressure roller cylinder 7. This method eliminates the need for a take-up pressure roller 11, simplifying the structure and reducing machine purchase and maintenance costs.
[0036] The cutting blade 2 controls the cutting through the cutting blade assembly.
[0037] Furthermore, the cutting blade assembly includes a cutting blade cylinder 6 fixedly mounted on a movable plate, with the working end of the cutting blade cylinder 6 movably connected to the cutting blade 2.
[0038] The mobile board is driven by a driver component.
[0039] Example 3 This embodiment provides a horizontal cutting device for dual-station winding. Based on the structure of embodiment 2, the driving component further includes a geared motor 3 mounted on an L-shaped frame 21. The working end of the geared motor 3 is connected to a gear 4. A first precision lead screw 17 that meshes with the gear 4 is also rotatably mounted on the L-shaped frame 21. The first precision lead screw 17 is arranged parallel to the cutting pressure roller cylinder 7. An electromagnetic clutch 18 is connected to one end of the first precision lead screw 17 near the frame of the roll material printing machine. The other end of the electromagnetic clutch 18 is connected to a second precision lead screw 19. The other end of the second precision lead screw 19 is connected to a moving plate 14.
[0040] Example 4 This embodiment provides a horizontal cutting device for dual-station winding, which, based on the structure of Embodiment 1, further includes, for example... Figure 5 As shown, the L-shaped frame 21 is also equipped with a sensor 5, which is connected to the geared motor 3 via a signal connection. During operation, the sensor 5 detects the number of teeth rotating on the gear 4 and uses pulse signals to feed back to the equipment PLC to control the start and stop of the geared motor 3, thereby controlling the cutting pressure roller cylinder 7 when used for intermittent winding. Figure 6 middle L1 The distance.
[0041] Example 5 This embodiment provides a horizontal cutter device for dual-station winding. Based on the structure of embodiment 1, the position control device is a photoelectric sensor 9 that cooperates with the cutting pressure roller 8. The photoelectric sensor 9 is symmetrically arranged on the two moving plates 14.
[0042] This invention innovatively incorporates a position control device, which can precisely control the position of the cutting pressure roller 8, enabling an intermittent winding method and ensuring the neatness of the winding. The method is as follows: after the cutting action is completed, the cutting pressure roller 8 retracts and disengages from the new roll, but does not return to the starting position; instead, it retracts to a position set by the system, such as... Figure 6 As shown, after the system is set to the position, sensor 5 calculates the retraction distance of the cutting roller 8 by detecting the number of pulse signals reflected from the tooth tip and tooth root during the rotation of gear 4 (another detection method is to install a rotary encoder on gear 4 to detect the rotation angle of the gear, thereby calculating the retraction dimension of the roller). When the set position is reached, the control system controls the cutting roller 8 to stop, at which point the cutting roller maintains a distance from the new roll. As the roll increases in size, the distance between the roll and the cutting roller 8 decreases. When the roll becomes large enough to block the signal of the photoelectric sensor 9 shown in the diagram, the system controls the cutting roller 8 to retract, thus repeating the above process to achieve intermittent winding and ensure winding neatness.
[0043] Example 6 The present invention provides a dual-station automatic winding and changing method, which utilizes the aforementioned dual-station horizontal cutting device for winding. The specific method is as follows: During the cutting process, the pressure of the cutting roller cylinder is adjusted to atmospheric pressure by the air pressure conversion device for cutting. After the cutting is completed, the cutting roller cylinder controls the cutting roller to not separate from the new roll, and at the same time controls the air pressure on the cutting roller cylinder to a small air pressure to ensure that the force of the cutting roller pressing on the new roll 13 always remains at the set value, ensuring the neatness and compactness of the new roll. After cutting, the cutting pressure roller retracts and detaches from the new roll, controlled by a position control device to return to the system-set position. L1 However, it does not return to the starting distance. L2 When the cutting pressure roller reaches the set position, the control system controls the reduction motor 3 to stop, at which point the cutting pressure roller maintains a certain distance from the new roll. L1 As the material roll increases in size, the distance between the material roll and the cutting pressure roller becomes smaller and smaller. When the material roll becomes so large that it blocks the signal of the photoelectric eye 9, the system controls the geared motor 3 to start, and the cutting pressure roller 8 to retreat, repeating the above process to achieve the intermittent winding function.
[0044] The method for calculating the retraction distance of the cutting pressure roller is as follows: Sensor 5 detects the number of teeth rotating in gear 4 and controls the start and stop of geared motor 3 by feeding back pulse signals to the equipment PLC, thereby controlling the distance set when the cutting pressure roller cylinder 7 is used for intermittent winding function; Alternatively, a rotary encoder can be installed on gear 4, and sensor 5 can detect the angle of rotation of gear 4 to calculate the retraction dimension of the pressure roller.
Claims
1. A horizontal cutting device for dual-station winding, characterized in that, It includes a roll-to-roll printing machine frame and an L-shaped frame (21), on which two sets of symmetrically arranged air shafts (10) are installed. The L-shaped frame (21) is equipped with a cutting device, which includes a cutting blade (2), a cutting pressure roller (8), and a position control device.
2. The dual-station horizontal cutting device for winding according to claim 1, characterized in that, The L-shaped frame (21) is also provided with two moving plates (14) facing each other. The cutting roller (8) is connected to the moving plate (14) through a bearing. The cutting blade (2) is set on the moving plate through a rotating shaft.
3. The dual-station horizontal cutting device for winding according to claim 2, characterized in that, A cutting pressure roller cylinder (7) is also horizontally fixedly installed on the L-shaped frame. The cutting pressure roller cylinder (7) is set on the L-shaped frame (21) through a cylinder tailstock (20). The working end of the cutting pressure roller cylinder (7) is connected to a cylinder connector (15). The cylinder connector (15) is connected to the moving plate (14) through a pin (16). The cutting roller cylinder (7) is equipped with a pneumatic pressure conversion device; The cutting blade (2) is controlled to cut by the cutting blade assembly; The mobile board is driven by a drive component.
4. The dual-station horizontal cutting device for winding according to claim 3, characterized in that, The cutting blade assembly includes a cutting blade cylinder (6) fixedly mounted on a movable plate, and the working end of the cutting blade cylinder (6) is movably connected to the cutting blade (2).
5. The dual-station horizontal cutting device for winding according to claim 3, characterized in that, The drive assembly includes a geared motor (3) mounted on an L-shaped frame (21). The working end of the geared motor (3) is connected to a gear (4). The L-shaped frame (21) is also rotatably provided with a first precision lead screw (17) meshing with the gear (4). The first precision lead screw (17) is arranged parallel to the cutting pressure roller cylinder (7). One end of the first precision lead screw (17) near the frame of the roll material printing machine is connected to an electromagnetic clutch (18). The other end of the electromagnetic clutch (18) is connected to a second precision lead screw (19). The other end of the second precision lead screw (19) is connected to a moving plate (14).
6. The dual-station horizontal cutting device for winding according to claim 5, characterized in that, The L-shaped frame (21) is also equipped with a sensor (5), which is connected to the geared motor (3) via signal.
7. The dual-station horizontal cutting device for winding according to claim 3, characterized in that, The position control device is a through-beam photoelectric eye (9) that is configured in conjunction with the cutting pressure roller (8). The through-beam photoelectric eye (9) is symmetrically arranged on two moving plates (14).
8. A dual-station automatic winding and changing method, characterized in that, The dual-station horizontal cutting device for winding, as described in any one of claims 1 to 7, is characterized by the following specific method: During the cutting process, the pressure of the cutting roller cylinder is adjusted to atmospheric pressure by the air pressure conversion device for cutting. After the cutting is completed, the cutting roller cylinder controls the cutting roller to not separate from the new roll, and at the same time controls the air pressure on the cutting roller cylinder to a small air pressure to ensure that the force of the cutting roller pressing on the new roll always remains at the set value, ensuring the neatness and compactness of the new roll. After cutting, the cutting roller retracts and detaches from the new roll. It is controlled by the position control device to retract to the system set position L1, but does not retract to the starting distance L2. When the cutting roller reaches the set position, the control system controls the reduction motor (3) to stop. At this time, the cutting roller maintains a certain distance L1 from the new roll. As the roll increases, the distance between the roll and the cutting roller becomes smaller and smaller. When the roll becomes so large that it blocks the signal of the photoelectric eye (9), the system controls the reduction motor (3) to start, and the cutting roller (8) retracts. The above process is repeated to realize the intermittent winding function.
9. The dual-station automatic winding and changing method according to claim 8, characterized in that, The method for calculating the retraction distance of the cutting pressure roller is as follows: The sensor (5) detects the number of teeth of the gear (4) rotating, and controls the start and stop of the geared motor (3) through pulse signal feedback to the equipment PLC, thereby controlling the distance set when the cutting pressure roller cylinder (7) is used for intermittent winding function; Alternatively, a rotary encoder can be installed on the gear (4), and the sensor (5) can detect the angle of rotation of the gear (4) to calculate the retraction dimension of the pressure roller.