Kraft paper wet adhesive tape cutting machine

Abstract

The application relates to the field of paper cutting, in particular to a kraft paper wet adhesive tape cutting machine which comprises a rack, the rack is sequentially provided with a transmission device, a cutting device and a sensing device according to a paper roll cutting process flow, the rack is provided with a containing cavity for placing the paper roll, the transmission device is provided with a paper inlet and a paper outlet, the containing cavity is located at the paper inlet, the cutting device is arranged between the paper inlet and the paper outlet, and the sensing device comprises a first sensing part which is arranged at the paper inlet and emits rays, the rays are directed between the paper roll and the paper inlet and are used for detecting whether paper exists between the paper roll and the paper inlet; when the first sensing part does not detect the paper, the first sensing part triggers the driving transmission device to drive the paper to retreat. The structure can improve the convenience of replacing the paper roll, reduce the equipment maintenance cost, improve the equipment production efficiency and practicality, and avoid the phenomenon that the paper is easily jammed when the paper roll is almost used up.

Description

Technical Field

[0001] This application relates to the field of paper cutting, and in particular to a kraft paper wet tape cutting machine. Background Technology

[0002] In the paper processing industry, the development of paper roll output and cutting equipment has a long history. From the initial purely manual operation to today's automated control, each technological innovation has brought significant changes to the field. With the rapid development of technology, the application of automation technology in industrial production has become increasingly widespread, and paper roll output and cutting machines have also achieved automated operation. This progress is of great significance, making the paper production process more efficient and precise, and greatly improving production efficiency. The function of automatically sensing length and cutting can quickly and accurately obtain the corresponding paper sheets, meeting the different paper size requirements of various industries such as packaging and printing, and powerfully promoting the prosperity and development of these industries. In terms of realizing the paper roll output and cutting functions, electric adhesive tape machines are commonly used on the market. Electric adhesive tape machines include a frame and a transmission device, cutting device, and sensing device set in the frame. The transmission device has a conveyor channel for transporting paper; the paper roll is placed at the inlet of the conveyor channel within the frame; the sensing device is located at the outlet of the conveyor channel; and the cutting device is located between the inlet and outlet of the conveyor channel. Its working principle is as follows: the paper roll is placed at the paper inlet of the transmission device, and the motor drives the roller to rotate, which in turn moves the paper through the conveyor channel. After passing through the cutting device, it reaches the paper outlet. Due to the limited space within the frame, the paper roll is continuously rotated by the tension of the paper to achieve unwinding. Sensors near the paper outlet automatically sense the output length of the paper. When the set length is reached, the cutting device is triggered to cut the paper. When the paper roll is almost empty, the motor is reversed to drive the remaining paper back to the roller for replacement with a new roll. Existing electric adhesive tape machines have significant defects. Paper rolls are divided into cored rolls and coreless rolls. When using cored rolls, the end of the paper is tightly connected to the core. When the roll is almost empty, the remaining paper moves the core and is easily jammed at the paper inlet. This is especially true for kraft paper, which has a smooth surface and is prone to slipping during unwinding, causing paper jams and making it difficult to remove the remaining paper. When using coreless rolls, the end of the paper detaches from the roller and enters the conveyor channel, passing through the roller. This causes some paper to remain between the roller and the cutting device, resulting in paper jams that are difficult to remove. These paper jam problems require manual intervention, which increases equipment maintenance costs and reduces the equipment's production efficiency and usability. Utility Model Content

[0003] To avoid paper jams when the paper roll is almost empty, improve the convenience of paper roll replacement, reduce equipment maintenance costs, and improve equipment production efficiency and practicality, this application provides a kraft paper wet tape cutting machine.

[0004] This application provides a kraft paper wet adhesive tape cutting machine, including a frame. The frame is sequentially arranged with a transmission device, a cutting device, and a sensing device according to the paper roll cutting process. The frame has a receiving cavity for placing the paper roll. The transmission device has a paper inlet and a paper outlet. The receiving cavity is located at the paper inlet. The cutting device is located between the paper inlet and the paper outlet. The sensing device includes a first sensor located at the paper inlet and emitting a ray. The ray is directed between the paper roll and the paper inlet to detect whether paper is present between them. When the first sensor does not detect paper, it triggers the transmission device to retract the paper. By adopting the above technical solution, during the paper roll cutting process, the paper roll is placed in the receiving cavity of the frame, which is located at the paper inlet of the transmission device. The paper enters the transmission device through the paper inlet, then passes through the cutting device, and finally exits from the paper outlet. The first sensor is located at the paper inlet and emits a beam that travels between the paper roll and the inlet. As the paper roll nears empty, the amount of paper between the roll and the inlet gradually decreases with each output. The first sensor continuously detects the presence of paper in this area; when it detects no paper, it means the roll is almost empty. At this point, the first sensor triggers a transmission mechanism, causing the mechanism to retract the paper. This avoids paper jams, as seen in traditional electric adhesive tape dispensers, where remaining paper on the roll cannot detach from the core, causing the core to become stuck at the inlet, or where the end of a coreless roll becomes stuck between the roller and the cutting device. This reduces the need for manual intervention, lowers equipment maintenance costs, and improves the equipment's production efficiency and usability. Preferably, the minimum distance between the beam of the first sensor and the paper inlet is 'a', and the distance between the paper roll axis and the paper inlet is 'A', where a:A ranges from 1 / 5 to 4 / 5. By adopting the above technical solution, the ratio of the minimum distance 'a' between the ray of the first sensor and the paper inlet to the distance 'A' between the paper roll axis and the paper inlet is set to a range of 1 / 5 to 4 / 5. This ensures that the first sensor accurately detects whether there is paper between the paper roll and the paper inlet. If the ratio of 'a' to 'A' is too small, the ray is too close to the paper inlet, and the remaining paper is too little. If the slippery surface of the kraft paper affects the paper ejection effect, it will be difficult to manually pull out the remaining paper. Setting the range of 'a' to 'A' to 1 / 5 to 4 / 5 allows the first sensor to detect the paper status at an appropriate position, triggering the transmission device to drive the paper back in time, thereby effectively reducing paper jams and improving the stability and practicality of the equipment. Preferably, the transmission device includes a transmission component and a guide component. The guide component is provided with a guide channel. The paper inlet is located at the feeding end of the guide channel, and the paper outlet is located at the discharging end of the guide channel. The transmission component is located between the cutting device and the paper inlet, and the transmission component drives the paper conveying in the guide channel.By adopting the above technical solution, the transmission device is equipped with a transmission component and a guide component. The guide component is configured with a guide channel, with the paper inlet located at the feeding end of the guide channel and the paper outlet located at the discharging end. This structure ensures that the paper, after entering through the paper inlet, is conveyed orderly under the guidance of the guide channel, preventing paper deviation or wrinkling during conveying. The transmission component is positioned between the cutting device and the paper inlet. When the paper enters the guide channel, the transmission component can promptly apply driving force to the paper, driving the paper within the guide channel to be smoothly conveyed to the paper outlet. This ensures the smoothness of the paper conveying process, improves the efficiency and accuracy of paper cutting, reduces paper jams, thereby reducing equipment maintenance costs and enhancing the practicality of the equipment. Preferably, the guide component includes a first guide plate and a second guide plate arranged sequentially in the vertical direction. The first guide plate and the second guide plate are arranged opposite to each other and enclose the guide channel. The transmission component is located at the bottom of the second guide plate. By adopting the above technical solution, the first guide plate and the second guide plate are arranged opposite each other in the vertical direction and enclose each other to form a guide channel. This structure provides a clear and stable path for paper transport, avoiding paper deviation or shaking during transport. The transmission component is located at the bottom of the second guide plate, allowing it to directly act on the lower surface of the paper within the guide channel. The friction between the transmission component and the paper drives the paper to be transported smoothly within the guide channel. Because the transmission component is located at the bottom, the weight of the paper and the contact friction of the transmission component are relatively large, further ensuring the stability and smoothness of paper transport. Preferably, the paper inlet is located diagonally above the paper roll, and an extension plate extends downward from the end of the second guide plate near the paper inlet. The extension plate is located between the paper inlet and the paper roll, and the first sensing element is located on the extension plate. By adopting the above technical solution, the paper inlet is located diagonally above the paper roll, making the paper transport path from the paper roll to the paper inlet more in line with mechanical principles. This reduces the resistance caused by bending and twisting of the paper during transport, facilitating smooth entry of the paper into the paper inlet. An extension plate extends downwards from the end of the second guide plate near the paper inlet, positioned between the paper inlet and the paper roll. A first sensor is mounted on this extension plate. Because the extension plate is in a critical position between the paper inlet and the paper roll, the first sensor can more accurately detect the presence of paper between the paper roll and the paper inlet. When the paper roll is nearly empty, the first sensor can promptly detect the paper shortage, triggering the transmission device to drive the paper back. This effectively avoids paper jams caused by paper end issues, reduces the need for manual intervention, lowers equipment maintenance costs, and improves equipment production efficiency and usability. Preferably, the sensing device also includes a second sensor located at the paper outlet to detect whether there is paper at the outlet. When paper is detected being removed from the outlet, the transmission device drives the paper to continue conveying.By adopting the above technical solution, a second sensor is installed at the paper outlet, which can detect in real time whether there is paper at the paper outlet. When it detects that there is paper that has not been removed at the paper outlet, the transmission component will not convey the next sheet of paper, preventing multiple sheets of paper from getting stuck at the paper outlet. In other words, the transmission component will only start and drive the paper to continue conveying after it detects that the paper at the paper outlet has been removed. This improves the accuracy and efficiency of paper cutting, thereby enhancing the automation level and production quality of the entire paper roll cutting process. Preferably, the cutting device includes a cutter head and a drive component. The drive component is located at the bottom of the second guide plate, and the cutter head is located above the first guide plate. The first guide plate and the second guide plate are provided with a cutting gap corresponding to the position of the cutter head. When the paper is conveyed to the paper outlet according to a preset conveying length, the drive component drives the cutter head to pass through the cutting gap and cut the paper. By adopting the above technical solution, the driving component is located at the bottom of the second guide plate, and the cutting head is located above the first guide plate. A cutting gap is provided between the first and second guide plates corresponding to the position of the cutting head. This layout allows the cutting head to smoothly pass through the cutting gap when the driving component drives it. When the paper is conveyed within the guide channel formed by the first and second guide plates, the driving component activates when the paper is output to the paper outlet according to the preset conveying length, driving the cutting head through the cutting gap and precisely acting on the paper to achieve efficient and accurate cutting. This avoids the problem of the cutting head not effectively acting on the paper or inaccurate cutting due to unreasonable layout, improving the quality and efficiency of paper cutting and ensuring the smooth operation of the entire paper roll cutting process. Preferably, the cutting device also includes a pressure roller, which is located above the first guide plate. The first guide plate has a first clearance hole, and the pressure roller passes through the first clearance hole to act on the upper surface of the paper in the guide channel. By adopting the above technical solution, a pressure roller is set in the cutting device. The pressure roller is located above the first guide plate, which has a first clearance hole. When cutting paper, the pressure roller can pass through the first clearance hole and act on the upper surface of the paper in the guide channel. Before cutting, the pressure roller applies pressure to the upper surface of the paper, making the paper more stable during the cutting process and preventing paper displacement or wrinkling. If the paper is unstable during cutting, it is easy to cause uneven cutting and affect the cutting quality. The setting of the pressure roller can effectively solve this problem, improve the accuracy and quality of paper cutting, thereby improving the working efficiency and product quality of the entire paper roll cutting equipment, reducing defective products caused by poor cutting, and reducing production costs. Preferably, the second guide plate is provided with a second clearance hole, and the transmission component passes through the second clearance hole and acts on the lower surface of the paper in the guide channel.By adopting the above technical solution, the transmission component penetrates the second clearance hole and acts on the lower surface of the paper in the guide channel, enabling the transmission component to better drive the paper conveying within the guide channel. This helps prevent paper jams in the guide channel, improving the smoothness of paper conveying and the working efficiency of the equipment. Preferably, the sensing device also includes a controller, which is disposed on the frame and electrically connected to the transmission device and the cutting device, for receiving signals from the first and second sensors. By adopting the above technical solution, the controller is disposed on the frame and electrically connected to the transmission device and the cutting device, and can receive signals from the first and second sensors. The first sensor can detect whether there is paper between the paper roll and the paper inlet; when no paper is detected, it triggers the transmission device to drive the paper back. The second sensor can detect the output length of the paper; when it reaches a preset value, it triggers the cutting device to cut the paper. After receiving these signals, the controller can precisely control the transmission device and the cutting device. In this way, when the first sensor detects a change in the paper's condition, the controller can promptly instruct the transmission device to retract the paper, preventing paper jams. When the second sensor detects that the paper output length meets the standard, the controller can quickly control the cutting device to cut the paper, ensuring accuracy and timeliness. This not only reduces manual intervention and lowers equipment maintenance costs but also improves the equipment's production efficiency and usability, making the entire paper roll cutting process more automated, efficient, and intelligent.

[0005] In summary, this application includes at least one of the following beneficial technical effects:

[0006] 1. The first sensor detects whether there is paper between the paper roll and the paper inlet. If no paper is detected, the transmission device is triggered to drive the paper back, which avoids the core of the cored paper roll getting stuck in the paper inlet and the paper of the coreless paper roll getting stuck between the roll and the cutting device, thus improving practicality.

[0007] 2. A second sensor is installed at the paper output port. The second sensor can detect whether there is paper at the paper output port in real time. When the paper at the paper output port is detected to be removed, the transmission component can drive the paper to continue to be conveyed, so as to avoid multiple sheets of paper blocking the paper output port.

[0008] 3. It is equipped with a first sensor to accurately control the amount of paper remaining before it enters the paper feed slot, making it easy to replace with a new paper roll. Attached Figure Description

[0009] Figure 1 This is an exploded view of a kraft paper wet tape cutting machine according to this application;

[0010] Figure 2 This is an internal structural diagram of a kraft paper wet tape cutting machine according to this application;

[0011] Figure 3This is a side cross-sectional view of a kraft paper wet tape cutting machine according to this application;

[0012] Figure 4 This is an overall structural diagram of a kraft paper wet tape cutting machine according to this application.

[0013] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Transmission device; 3. Cutting device; 4. Sensing device; 5. Paper roll; 11. Cover plate; 12. Side plate; 13. Protective cover; 14. Receiving cavity; 15. Limiting post; 16. Limiting plate; 17. Pressing rod; 21. Transmission component; 22. Guide component; 211. Motor; 212. Belt; 213. Conveyor wheel; 221. First guide plate; 222. Second guide plate; 223. Guide channel; 224. Paper inlet; 225. Paper outlet; 226. Extension plate; 227. Cutting gap; 31. Cutting head; 32. Driving component; 33. Pressure roller component; 311. Fixed blade; 312. Movable blade; 41. First sensing element; 42. Second sensing element; 43. Controller. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0015] This application provides an embodiment of a kraft paper wet tape cutting machine, referring to... Figure 1 and Figure 2 It includes a frame 1, a transmission device 2, a cutting device 3, and a sensing device 4. The transmission device 2, the cutting device 3, and the sensing device 4 are arranged sequentially in the frame 1 according to the paper roll 5 cutting process.

[0016] Reference Figure 2The frame 1 is a cavity structure formed by a cover plate 11 and two side plates 12. The transmission device 2, cutting device 3, and sensing device 4 are all located in the cavity structure. One area of ​​the cavity structure is a receiving cavity 14 for placing paper rolls 5. The cover plate 11 is an arc-shaped split structure, which can be divided into a first arc plate and a second arc plate. The first arc plate is detachable, and after detachment, it forms an opening. The receiving cavity 14 is located directly below the opening. The paper roll 5 is placed into the receiving cavity 14 through the opening. The inner wall of the second arc plate is provided with two limiting posts 15. Two limiting posts 15 are arranged parallel to the axis of the paper roll 5, and abut against the two sides of the bottom of the paper roll 5 to limit the radial movement of the paper roll 5. Two limiting plates 16 are also provided on the inner wall of the second arc-shaped plate. The two limiting plates 16 are arranged opposite each other and perpendicular to the axis of the paper roll 5, and abut against both ends of the paper roll 5 to limit the axial movement of the paper roll 5. A pressing rod 17 is provided inside the receiving cavity 14. The two ends of the pressing rod 17 are rotatably mounted on the two side walls to press against the top of the paper roll 5 to limit its vertical movement. Specifically, the two side plates 12 are also provided with protective covers 13 to protect the side plates 12 and the transmission device 2, cutting device 3, and sensing device 4 within the cavity structure.

[0017] Specifically, the transmission device 2 in this embodiment includes a transmission component 21 and a guide component 22. The transmission component 21 specifically includes a motor 211, a belt 212, and a conveyor wheel 213. A rotating shaft is fixed in the middle of the conveyor wheel 213. The two ends of the rotating shaft are rotatably mounted on the two side plates 12 through bearings. A wheel is fixedly connected to the other end of one of the bearings. The motor 211 is located directly below the wheel and is connected to the inner wall of the frame 1. A belt 212 is sleeved between the output end of the motor 211 and the wheel to enable the motor 211 to drive the wheel to rotate, thereby driving the conveyor wheel 213 to rotate. The conveyor wheel 213 contacts the lower surface of the paper and drives the paper to move in the guide channel 223 through friction. When the motor 211 rotates forward, it drives the conveyor wheel 213 to rotate clockwise so that the paper can be conveyed to the paper outlet 225. When the motor 211 rotates in reverse, it drives the conveyor wheel 213 to rotate counterclockwise so that the paper can be driven back out of the paper inlet 224 to realize the paper ejection action.

[0018] The guide component 22 includes a first guide plate 221 and a second guide plate 222 arranged sequentially in the vertical direction. The first guide plate 221 and the second guide plate 222 are arranged opposite to each other and enclose a guide channel 223. The transmission component 21 is disposed at the bottom of the second guide plate 222. The guide channel 223 is provided with a paper inlet 224 and a paper outlet 225. The paper inlet 224 is located at the feeding end of the guide channel 223, and the paper outlet 225 is located at the discharging end of the guide channel 223. The cover plate 11 is designed to avoid the position of the paper outlet 225. The receiving cavity 14 is located at the paper inlet 224. The cutting device 3 is disposed between the paper inlet 224 and the paper outlet 225. The transmission component 21 is disposed between the cutting device 3 and the paper inlet 224. The transmission component 21 drives the paper conveying in the guide channel 223, thereby achieving the effect of automating the cutting of the paper roll 5 and improving production efficiency.

[0019] Specifically, the second guide plate 222 is provided with a second clearance hole for avoiding the top of the conveyor wheel 213, through which the conveyor wheel 213 passes and can come into contact with the lower surface of the paper. Under the rotation of the conveyor wheel 213, the paper in the guide channel 223 is conveyed.

[0020] Reference Figure 3 Furthermore, the paper inlet 224 is located diagonally above the paper roll 5, and an extension plate 226 extends downward from the end of the second guide plate 222 near the paper inlet 224. The extension plate 226 is located between the paper inlet 224 and the paper roll 5. In this embodiment, the first guide plate 221 and the second guide plate 222 are made of smooth metal plates to reduce friction during paper transport. The guide channel 223 formed by their relative arrangement ensures smooth paper transport. The ends of the first guide plate 221 and the second guide plate 222 near the paper inlet 224 are inclined upwards, and the end of the extension plate 226 away from the paper inlet 224 is inclined downwards. An obtuse angle is formed between the second guide plate 222 and the extension plate 226. This design facilitates the paper to obtain appropriate tension.

[0021] Among them, the second guide plate 222 has an extension plate 226 extending downward from one end near the paper inlet 224, and the extension plate 226 is located between the paper inlet 224 and the paper roll 5.

[0022] Reference Figure 3 and Figure 4Specifically, the sensing device 4 in this embodiment includes a first sensor 41, a second sensor 42, and a controller 43. The first sensor 41 is disposed on the extension plate 226 at the paper inlet 224 and emits rays. The rays are directed between the paper roll 5 and the paper inlet 224 to detect whether there is paper between the paper roll 5 and the paper inlet 224. In this embodiment, the first sensor 41 is an infrared sensor, which has the characteristics of high detection accuracy and fast response speed. In other embodiments, a laser sensor can also be used, which has good directionality and a longer detection distance. The first sensor 41 forms a detection area by emitting rays. When the rays are blocked by paper, it indicates that there is paper between the paper roll 5 and the paper inlet 224. When the rays are not blocked, that is, when the first sensor 41 does not detect paper, the first sensor 41 sends a signal to the controller 43. The controller 43 controls the trigger drive transmission device 2 to drive the paper back. This allows for early processing when the paper is almost used up, avoiding paper jams.

[0023] Specifically, the minimum distance 'a' between the ray of the first sensor 41 and the paper feed port 224 is 'a', and the distance A between the axis of the paper roll 5 and the paper feed port 224 is 'A'. The range of a:A is 1 / 5 to 4 / 5. This ratio range is set to ensure that the first sensor 41 can accurately detect the paper condition between the paper roll 5 and the paper feed port 224. If the value of a:A is too small, the remaining paper allowance before the paper feed port 224 is too small, and if a paper jam occurs, it will be difficult to pull out the paper.

[0024] Specifically, the second sensor 42 is located at the paper output port 225 to detect whether there is paper at the paper output port 225. When the paper is conveyed to the paper output port 225 according to the preset conveying length, if the paper is not removed, the next paper will not be conveyed until the paper is removed, at which point the transmission component 21 will continue to convey the next paper. The second sensor 42 can be an infrared sensor. The second sensor 42 emits rays to the vicinity of the paper output port 225 to form a detection area. When the rays are blocked by paper, it indicates that there is paper at the paper output port 225; otherwise, there is no paper. The second sensor 42 can send a signal to the controller 43, which controls the stop or start of the drive component 32.

[0025] Specifically, in this embodiment, the controller 43 is disposed on the side plate 12 of the frame 1 and located inside the protective cover 13. The controller 43 is provided with a display panel, which is embedded in the surface of the side plate 12 and electrically connected to the controller 43. The controller 43 is electrically connected to both the transmission device 2 and the cutting device 3, and is used to receive signals from the first sensor 41 and the second sensor 42. The controller 43 can be a microcontroller. After receiving the signals from the first sensor 41 and the second sensor 42, it controls the operation of the transmission device 2 and the cutting device 3 according to a preset program. When the first sensor 41 detects that the paper is almost used up, the controller 43 controls the transmission device 2 to retract the paper; when the second sensor 42 detects that there is paper at the paper outlet, the controller 43 controls the transmission device 21 to be in a stopped state; when the second sensor 42 detects that there is no paper at the paper outlet after the cutting action is completed, the controller 43 controls the transmission device 21 to convey the next sheet of paper.

[0026] Specifically, the cutting device 3 in this embodiment includes a cutting head 31, a driving member 32, and a pressure roller 33. The driving member 32 is disposed at the bottom of the second guide plate 222. The cutting head 31 includes a fixed blade 311 disposed on the first guide plate 221 and a movable blade 312 movably disposed above the fixed blade 311. Specifically, the movable blade 312 rotates through a connecting shaft, a connecting rod, and a fixed shaft. The two ends of the fixed shaft are respectively connected to the two side plates 12. One end of the connecting rod is rotatably disposed on the fixed shaft, and the other end of the connecting rod is rotatably connected to the connecting shaft, so that the connecting shaft can rotate around the fixed shaft. The movable blade 312 is mounted on the connecting shaft. One end of the connecting shaft is connected to the output end of the driving member 32. The driving member 32 can drive the connecting shaft to press down until it abuts against the fixed blade 311, so that the movable blade 312 and the fixed blade 311 cut the paper in the guide channel 223. The first guide plate 221 and the second guide plate 222 are both stably installed by connecting to the two side plates 12 at both ends. When the paper is conveyed to the paper outlet 225 according to the preset conveying length, the drive unit 32 drives the cutter head 31 to cut the paper.

[0027] Specifically, in this embodiment, both the first guide plate 221 and the second guide plate 222 are two-segment split structures, such that the first guide plate 221 and the second guide plate 222 are provided with a cutting gap 227 corresponding to the position of the cutter head 31. The cutting gap 227 is the connection point of the two split structures, and the second driving member 32 drives the cutter head 31 to pass through the cutting gap 227 to cut the paper. The first segment's guide channel 223 extends from the paper inlet 224 to the cutting gap 227 and is inclined, while the second segment's guide channel 223 extends from the cutting gap 227 to the paper outlet 225 and is horizontal. The driving member 32 can be a cylinder, and the piston rod of the cylinder is connected to the movable blade 312 via a connecting shaft. The extension and retraction of the cylinder drives the movable blade 312 to move up and down, passing through the cutting gap 227 to cut the paper.

[0028] Specifically, the pressure roller 33 is positioned above the first guide plate 221 and is rotatably connected to the fixed shaft via a connecting shaft and a connecting rod. Specifically, one end of the connecting rod is rotatably connected to the fixed shaft, and the other end is rotatably connected to the connecting shaft. The pattern wheel is rotatably mounted on the connecting shaft. Correspondingly, the first guide plate 221 has a first clearance hole for the pattern wheel, which passes through the first clearance hole and acts on the upper surface of the paper in the guide channel 223. During paper cutting, the pattern wheel presses down on the paper to prevent it from moving during the cutting process, ensuring cutting accuracy. Furthermore, because the pattern wheel is rotatable, it reduces friction on the upper surface of the paper.

[0029] The implementation principle of this embodiment is as follows:

[0030] Transmission device 2 structure: Transmission device 2 includes a transmission component 21 and a guide component 22. The transmission component 21 consists of a motor 211, a belt 212, and a conveyor wheel 213. The motor 211 drives the conveyor wheel 213 to rotate via the belt 212. The guide component 22 consists of a first guide plate 221 and a second guide plate 222 arranged sequentially and opposite to each other in the vertical direction. The two together form a guide channel 223 with a paper inlet 224 and a paper outlet 225. The receiving cavity 14 is located at the paper inlet 224. The cutting device 3 is located between the paper inlet 224 and the paper outlet 225. The transmission component 21 is located between the cutting device 3 and the paper inlet 224.

[0031] Conveying process: Motor 211 rotates forward, driving conveyor wheel 213 to rotate clockwise, conveying the paper to the paper outlet 225; Motor 211 rotates in reverse, driving conveyor wheel 213 to rotate counterclockwise, driving the paper back out of the paper inlet 224, realizing the paper ejection action. The paper inlet 224 is located diagonally above the paper roll 5. The second guide plate 222 extends downward with an extension plate 226 near the paper inlet 224, located between the paper inlet 224 and the paper roll 5. The first and second guide plates 222 are made of smooth metal plates, with the end near the paper inlet 224 inclined upward, and the end of the extension plate 226 away from the paper inlet 224 inclined downward, forming an obtuse angle, which facilitates the paper to obtain appropriate tension and ensures smooth conveying.

[0032] Paper feed port 224 detection: The first sensor 41 of the sensing device 4 is disposed on the extension plate 226 at the paper feed port 224, and emits a beam of light between the paper roll 5 and the paper feed port 224 to detect whether there is paper in this area. When the beam of light is not blocked, that is, when the first sensor 41 does not detect paper, a signal is sent to the controller 43, and the controller 43 controls the transmission device 2 to drive the paper back to avoid paper jam.

[0033] Paper output slot 225 detection: The second sensor 42 is located at the paper output slot 225 to detect whether there is paper at the paper output slot 225. When an infrared sensor is used, it emits rays to form a detection area near the paper output slot 225. If there is paper at the paper output slot 225, the next sheet will not be conveyed. Only when the paper output slot 225 is detected to have been removed will the transmission component 21 drive the next sheet to continue conveying.

[0034] The cutting device 3 includes a cutting head 31, a driving component 32, and a pressure roller 33. The driving component 32 is located at the bottom of the second guide plate 222. The cutting head 31 consists of a fixed blade 311 on the first guide plate 221 and a movable blade 312 movably positioned above it. The first and second guide plates 222 have a cutting gap 227 corresponding to the position of the cutting head 31. The first section of the guide channel 223 extends from the paper inlet 224 to the cutting gap 227 and is inclined, while the second section extends from the cutting gap 227 to the paper outlet 225 and is horizontal. The pressure roller 33 is positioned above the first guide plate 221 and acts on the upper surface of the paper.

[0035] Cutting process: When the paper is conveyed to the paper outlet 225 according to the preset conveying length, the controller 43 controls the drive component 32 to drive the connecting shaft to press down, so that the movable blade 312 abuts against the fixed blade 311 and passes through the cutting gap 227 to cut the paper in the guide channel 223; at the same time, the pattern wheel of the pressure roller component 33 presses down on the paper to prevent the paper from moving during cutting, ensuring cutting accuracy, and the pattern wheel can rotate to reduce the friction on the upper surface of the paper.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A kraft paper wet adhesive tape cutting machine characterized by, The device includes a frame (1), which is provided with a transmission device (2), a cutting device (3) and a sensing device (4) in sequence according to the paper roll cutting process. The frame (1) is provided with a receiving cavity (14) for placing paper rolls (5). The transmission device (2) is provided with a paper inlet (224) and a paper outlet (225). The receiving cavity (14) is located at the paper inlet (224). The cutting device (3) is located between the paper inlet (224) and the paper outlet (225). The sensing device (4) includes a first sensing element (41), which is located at the paper inlet (224) and emits rays. The rays are directed between the paper roll (5) and the paper inlet (224) to detect whether there is paper between the paper roll (5) and the paper inlet (224). When the first sensing element (41) does not detect paper, the first sensing element (41) triggers the transmission device (2) to drive the paper back.

2. The kraft paper wet adhesive tape cutting machine according to claim 1, characterized in that, The minimum distance between the ray of the first sensing element (41) and the paper inlet (224) is a, and the distance between the axis of the paper roll (5) and the paper inlet (224) is A, where a:A ranges from 1 / 5 to 4 / 5.

3. The kraft paper wet adhesive tape cutting machine according to claim 1, characterized in that, The transmission device (2) includes a transmission component (21) and a guide component (22). The guide component (22) is provided with a guide channel (223). The paper inlet (224) is located at the feeding end of the guide channel (223), and the paper outlet (225) is located at the discharging end of the guide channel (223). The transmission component (21) is located between the cutting device (3) and the paper inlet (224). The transmission component (21) drives the paper to be conveyed in the guide channel (223).

4. The kraft paper wet adhesive tape cutting machine according to claim 3, characterized in that, The guide member (22) includes a first guide plate (221) and a second guide plate (222) arranged sequentially in the vertical direction. The first guide plate (221) and the second guide plate (222) are arranged opposite to each other and enclose the guide channel (223). The transmission member (21) is arranged at the bottom of the second guide plate (222).

5. The kraft paper wetting adhesive tape cutting machine according to claim 4, characterized in that, The paper inlet (224) is located diagonally above the paper roll (5). The second guide plate (222) extends downward from one end near the paper inlet (224) and is provided with an extension plate (226). The extension plate (226) is located between the paper inlet (224) and the paper roll (5). The first sensing element (41) is provided on the extension plate (226).

6. The kraft paper wetting adhesive tape cutting machine according to claim 4, characterized in that, The sensing device (4) further includes a second sensing element (42), which is disposed at the paper outlet (225) and is used to detect whether there is paper at the paper outlet (225). When the paper at the paper outlet (225) is detected to be taken away, the transmission element (21) drives the paper to continue to be conveyed.

7. The kraft paper wetting adhesive tape cutting machine according to claim 6, characterized in that, The cutting device (3) includes a cutter head (31) and a drive member (32). The drive member (32) is located at the bottom of the second guide plate (222), and the cutter head (31) is located above the first guide plate (221). The first guide plate (221) and the second guide plate (222) are provided with a cutting gap (227) corresponding to the position of the cutter head (31). When the paper is conveyed to the paper outlet (225) according to the preset conveying length, the drive member (32) drives the cutter head (31) to pass through the cutting gap (227) to cut the paper.

8. The kraft paper wetting adhesive tape cutting machine according to claim 7, characterized in that, The cutting device (3) further includes a pressure roller (33), which is disposed above the first guide plate (221). The first guide plate (221) is provided with a first clearance hole, and the pressure roller (33) passes through the first clearance hole and acts on the upper surface of the paper in the guide channel (223).

9. The kraft paper wetting adhesive tape cutting machine according to claim 4, characterized in that, The second guide plate (222) is provided with a second clearance hole, and the transmission member (21) passes through the second clearance hole and acts on the lower surface of the paper in the guide channel (223).

10. The kraft paper wetting adhesive tape cutting machine according to claim 6, characterized in that, The sensing device (4) further includes a controller (43), which is disposed on the frame (1) and electrically connected to the transmission device (2) and the cutting device (3) for receiving signals from the first sensing element (41) and the second sensing element (42).

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