Full speed non-stop pay-off device

Abstract

The application discloses a full-speed non-stop unwinding device, and belongs to the field of paper product processing equipment, and particularly relates to a full-speed non-stop unwinding device. The full-speed non-stop unwinding device comprises a paper roll frame mechanism, a paper roll feeding mechanism, a positioning mechanism and a paper roll shaft driving device one arranged on the paper roll frame mechanism and used for rotating the paper roll to unwind the paper; a transfer arm mechanism, a paper roll shaft locking device and a paper roll shaft driving device two arranged on the transfer arm mechanism and used for keeping the same rotating speed as the paper roll shaft driving device one; a paper receiving mechanism, a paper cutting knife device arranged on the paper receiving mechanism; and a paper roll shaft frame mechanism used for guiding and collecting the paper roll after the paper is unwound. The transfer arm mechanism is arranged for a single work station and is used for discharging the paper roll. The paper roll shaft driving device two arranged on the transfer arm mechanism ensures the unwinding rotating speed, so that the unwinding state is maintained when the paper roll is discharged. The original work station can be prepared for feeding and unwinding the next paper roll.

Description

Technical Field

[0001] This invention discloses a paper processing equipment, specifically a full-speed, non-stop unwinding device. Background Technology

[0002] Taking rewinding equipment as an example, the traditional unwinding device works by manually placing the master roll onto the unwinding frame after it is hoisted from the paper machine, and then rewinding it. Once the paper roll is finished winding, the equipment needs to be paused, the forks on the unwinding frame push out the empty paper roll shaft, and then the stored paper roll is hoisted onto the unwinding frame for rewinding, i.e., replacing the master roll with a new one. This intermittent working mode has low production efficiency and high labor intensity for workers.

[0003] Existing non-stop unwinding devices typically have two stations. Once the unwinding is completed at one station, the other station starts. Two sets of corresponding supporting facilities are required, which increases costs. Summary of the Invention

[0004] To solve the above problems, the present invention provides a full-speed, non-stop unwinding device.

[0005] The object of this invention is achieved by the following means: a full-speed, non-stop unwinding device, comprising: Paper roll holder mechanism 1, which is equipped with a paper roll feeding mechanism, a positioning mechanism, and a paper roll shaft drive device 1-6 for rotating the paper roll to unwind it; The transfer arm mechanism 2 is equipped with a paper roll shaft locking device 2-5 and a paper roll shaft drive device 2-6 for maintaining the same speed as the paper roll shaft drive device 1-6. Paper receiving mechanism 3, and paper cutting knife device 3-8 is provided on paper receiving mechanism 3; The paper roll holder mechanism 4 is used to guide and collect the paper roll after it has been unloaded.

[0006] Furthermore, the paper roll holder mechanism 1 includes a frame 1-1 and a paper roll shaft limiting device 1-2 and a shift fork device 1-3 disposed at one end of the frame 1-1; a paper roll shaft positioning device 1-4 and a paper roll shaft clamping device 1-5 disposed at the other end of the frame 1-1; and a paper roll shaft driving device 1-6 disposed on the outside of the frame 1-1.

[0007] Furthermore, the shift fork device 1-3 includes a cylinder 1-3-1, the bottom of which is fixed to the frame 1-1, and the upper end of which is connected to the shift fork 1-3-2 via a pin; the other end of the shift fork 1-3-2 is hinged to the frame 1-1. The paper roll positioning device 1-4 includes a hydraulic cylinder 1-4-1, the bottom of which is fixed to the frame 1-1, and the other end is rotatably connected to the connecting plate 1-4-2. The connecting plate 1-4-2 is rotatably connected to the connecting plate support 1-4-3. 1-4-3 is fixedly connected to the frame 1-1. The other end of the connecting plate 1-4-2 is rotatably connected to the positioning shaft 1-4-4 to form a lever. The positioning shaft 1-4-4 is slidably connected to the fixed seat 1-4-5. The fixed seat 1-4-5 is fixedly installed on the frame 1-1. The paper roll clamping device 1-5 is provided with a hydraulic cylinder seat 1-5-1. The hydraulic cylinder seat 1-5-1 is connected to the bottom of the hydraulic cylinder 1-5-2. The upper end of the hydraulic cylinder 1-5-2 is rotatably connected to the clamping plate 1-5-3. The middle part of the clamping plate 1-5-3 is rotatably connected to the clamping plate support 1-5-4.

[0008] Furthermore, the paper roll drive device 1-6 includes a motor base 1-6-1 with a motor 1-6-2 mounted on top. The motor 1-6-2 is connected to a reducer 1-6-4 via a coupling 1-6-3. A pulley 1-6-5 is mounted on one end of the reducer 1-6-4, and a belt 1-6-6 is mounted on the pulley 1-6-5. The device also includes a transmission bracket 1-6-10, with a fixed seat 1-6-14 on top of the transmission bracket 1-6-10. A brake wheel 1-6-13 is mounted on the fixed seat 1-6-14. The transmission shaft 1-6-7 is connected to the brake wheel. Wheel 1-6-13 is connected by a key. One end of the drive shaft 1-6-7 is equipped with a clutch 1-6-9, and the other end is equipped with another pulley 1-6-5. The two pulleys 1-6-5 are connected by a belt 1-6-6. The brake 1-6-8 is fixed on the transmission bracket 1-6-10. The lower part of the transmission bracket 1-6-10 is equipped with a hydraulic cylinder 1-6-11. The hydraulic cylinder 1-6-11 is connected to the shift fork 1-6-12. The hydraulic cylinder 1-6-11 pushes the shift fork 1-6-12 to separate and engage the drive shaft 1-6-7 with the paper roll shaft.

[0009] Furthermore, the transfer arm mechanism 2 includes a first rotating arm 2-1, a second rotating arm 2-2, a rotating arm connecting shaft 2-3, a rotating arm fixing seat 2-4, a paper roll shaft locking device 2-5, a second paper roll shaft driving device 2-6, a transmission belt 2-7, a hydraulic cylinder 2-8, and a hydraulic cylinder fixing seat 2-9; The bottom of the first rotating arm 2-1 and the second rotating arm 2-2 are connected to the rotating arm connecting shaft 2-3. The rotating arm connecting shaft 2-3 is provided with a hinge seat that is rotatably connected to the front end of the hydraulic cylinder 2-8. The rear end of the hydraulic cylinder 2-8 is rotatably connected to the hydraulic cylinder fixing seat 2-9. The rotating arm connecting shaft 2-3 is hinged to the rotating arm fixing seat 2-4. The upper part of the first rotating arm 2-1 is provided with a paper roll shaft driving device 2-6, which has the same structure as the first paper roll shaft driving device 1-6. The upper outer side of the first rotating arm 2-1 and the second rotating arm 2-2 is provided with a paper roll shaft locking device 2-5, which includes a hydraulic fixing seat 2-5-1, a hydraulic cylinder 2-5-2, and a fixing clamp 2-5-3.

[0010] Furthermore, the paper receiving mechanism 3 includes a frame 3-1, a frame 3-2, a lifting device 3-3, a guide roller 3-4, a guide roller 3-5, a roller frame device 3-6, a paper pressing roller device 3-7, and a paper cutting knife device 3-8. Lifting devices 3-3 are provided at the bottom of frame 1 (3-1) and frame 2 (3-2). Roller frame device 3-6 is provided on the upper part of frame 1 (3-1) and frame 2 (3-2). Guide roller 3-4 is provided at the front end of the inner side of roller frame device 3-6. Drive pulley is provided at the end of guide roller 3-4. Pressing roller device 3-7 is provided in the middle of the inner side of roller frame device 3-6. Pressing roller device 3-7 is mounted on pressing roller fixing arm 3-9. Hydraulic cylinder 3-10 is provided at the lower part of pressing roller fixing arm 3-9. Hydraulic cylinder 3-10 is fixed on the distance beam 3-11. Guide roller 2 (3-5) is provided at the rear end of the inner side of roller frame device 3-6. Paper cutter device 3-8 is provided on guide roller 2 (3-5). Paper cutter device 3-8 rotates around guide roller 3-4. Synchronous pulleys are provided at the ends of guide roller 3-4, pressing roller device 3-7, and guide roller 2 (3-5). They are connected by synchronous belts.

[0011] Furthermore, the paper roll frame mechanism 4 includes a roll frame 4-1, a guide rail 4-2, a buffer cylinder support 4-3, a buffer cylinder 4-4, and a baffle 4-5; The winding frame 4-1 is equipped with a buffer cylinder support 4-3, which is connected to a buffer cylinder 4-4. The other end of the buffer cylinder 4-4 is connected to a baffle 4-5. A downward-sloping guide rail 4-2 is fixed on the top of the winding frame 4-1 to allow the winding drum to slide down naturally and provide buffering.

[0012] An automatic unwinding method for full-speed non-stop operation is applied to the aforementioned full-speed non-stop roll changing device. The operating steps of the full-speed non-stop roll changing device are as follows: Initially, the roll positioning device 1-4 performs an upward movement and reaches the raised position; the roll clamping device 1-5 performs a separating movement and reaches the separated position; after the shift fork device 1-3 pushes the mother roll to the working position, the roll clamping device 1-5 performs a closing movement and reaches the closed position; the hydraulic cylinder 1-6-11 pushes the roll drive device 1-6 to hold one end of the roll head; the roll head begins to rotate; when the roll diameter reaches the pre-connected paper diameter, the transfer arm mechanism 2 starts and rotates to the roll head position; the roll locking device 2-5 on the upper part of the transfer arm mechanism 2 clamps the roll bearing chamber; the roll drive device 2-6 on the transfer arm mechanism 2 operates, and when the speed accelerates to match the current machine speed, the hydraulic cylinder on the roll drive device 2-6 pushes the roll drive device 2-6 to hold the other end of the roll head. At this time, hydraulic cylinder 1-6-11 pushes the paper roll drive device 1-6 to disengage one side of the paper roll head; at the same time, the paper roll positioning device 1-4 performs a falling action and reaches the falling position. The transfer arm mechanism 2 carries the paper roll and begins to move towards the paper receiving structure 3. When the transfer arm mechanism 2 carries the paper roll to the top of the paper receiving mechanism 3, it stops. At this time, a new mother roll is pushed into the paper roll holder. When the diameter of the paper roll on the paper roll has met the conditions for changing the roll, the paper receiving mechanism 3 starts to operate. The lifting device 3-3 drives the roller frame device 3-6 to rise. When the paper pressure roller device 3-7 of the roller frame device 3-6 touches the mother roll, the paper cutter device 3-8 lifts up and cuts the paper. The paper receiving action is completed, and the automatic roll changing ends.

[0013] Furthermore, under high-speed rotation, when the paper roll drive device 1-6 is not disengaged from the paper roll, and the paper roll drive device 2-6 is holding the other side of the paper roll head, the speeds of the paper roll drive device 1-6 and the paper roll drive device 2-6 must be highly consistent. The speed control of the paper roll drive device 1-6 and the paper roll drive device 2-6 is achieved through the following method: When the diameter is less than 1300mm, the transfer arm drive operates, the frequency setpoint is consistent with the unwinding drive, and the torque setpoint is close to 0%. After the actual speed is consistent with the unwinding speed, the paper receiving arm clutch engages, and after reaching the position, it clamps tightly. After clamping for 10 seconds or reaching the limit, the unwinding torque decreases by a ramp, and the transfer arm drive torque increases by a ramp, ensuring that the sum of the torques at the two drive points remains unchanged. After the unwinding torque drops to 0%, the unwinding clutch automatically disengages, the transmission stops.

[0014] Compared with the prior art, the present invention provides a transfer arm mechanism for unwinding at a single workstation. The transfer arm mechanism has a paper roll drive device 2 that ensures the unwinding speed, so that the unwinding state is maintained during unwinding, and the original workstation can prepare to load material and unwind the next paper roll. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a full-speed, non-stop unwinding device; Figure 2 This is a schematic diagram of the structure of the paper roll shaft drive device; Figure 3 This is a schematic diagram of a full-speed, non-stop unwinding device without the paper splicing mechanism. Figure 4 This is a transverse view of the transfer arm mechanism; Figure 5 This is a schematic diagram of a full-speed, non-stop unwinding device without the transfer arm mechanism.

[0016] Among them, the paper roll holder mechanism 1 and the frame 1-1; Paper roll shaft limiting device 1-2, baffle fixing support 1-2-1, baffle 1-2-2; Shift fork device 1-3, cylinder 1-3-1, shift fork 1-3-2; Paper roll shaft positioning device 1-4, hydraulic cylinder 1-4-1, connecting plate 1-4-2, connecting plate support 1-4-3, positioning shaft 1-4-4, fixed seat 1-4-5; Paper roll clamping device 1-5, hydraulic cylinder seat 1-5-1, hydraulic cylinder 1-5-2, clamping plate 1-5-3, clamping plate support 1-5-4; Paper roll shaft drive unit 1-6, motor base 1-6-1, motor 1-6-2, coupling 1-6-3, reducer 1-6-4, pulley 1-6-5, belt 1-6-6, drive shaft 1-6-7, brake 1-6-8, clutch 1-6-9, transmission bracket 1-6-10, hydraulic cylinder 1-6-11, shift fork 1-6-12, brake wheel 1-6-13, fixed base 1-6-14 Guide rollers 1-7, guide roller drive 1-8; 2. Transfer arm mechanism, 2-1 rotating arm one, 2-2 rotating arm two, 2-3 rotating arm connecting shaft, 2-4 rotating arm fixing seat, 2-5 paper roll shaft locking device, 2-5 fixing seat, 2-5 hydraulic cylinder, 2-5 fixing clamp, 2-6 paper roll shaft drive device two, 2-7 transmission belt, 2-8 hydraulic cylinder, 2-9 hydraulic cylinder fixing seat; Paper receiving mechanism 3, frame one 3-1, frame two 3-2, lifting device 3-3, guide roller one 3-4, guide roller two 3-5, roller frame device 3-6, paper pressing roller device 3-7, paper cutting knife device 3-8, pressure roller fixing arm 3-9, hydraulic cylinder 3-10, distance beam 3-11; Paper roll frame mechanism 4, roll frame 4-1, guide rail 4-2, buffer cylinder support 4-3, buffer cylinder 4-4, baffle 4-5. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In this invention, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0019] like Figure 1 As shown, a full-speed, non-stop unwinding device includes: Paper roll holder mechanism 1, which is equipped with a paper roll feeding mechanism, a positioning mechanism, and a paper roll shaft drive device 1-6 for rotating the paper roll to unwind it; The transfer arm mechanism 2 is equipped with a paper roll shaft locking device 2-5 and a paper roll shaft drive device 2-6 for maintaining the same speed as the paper roll shaft drive device 1-6. Paper receiving mechanism 3, and paper cutting knife device 3-8 is provided on paper receiving mechanism 3; The paper roll holder mechanism 4 is used to guide and collect the paper roll after it has been unloaded.

[0020] Furthermore, the paper roll holder mechanism 1 includes a frame 1-1 and a paper roll shaft limiting device 1-2 and a shift fork device 1-3 disposed at one end of the frame 1-1; a paper roll shaft positioning device 1-4 and a paper roll shaft clamping device 1-5 disposed at the other end of the frame 1-1; and a paper roll shaft driving device 1-6 disposed on the outside of the frame 1-1.

[0021] Furthermore, the shift fork device 1-3 includes a cylinder 1-3-1, the bottom of which is fixed to the frame 1-1, and the upper end of which is connected to the shift fork 1-3-2 via a pin; the other end of the shift fork 1-3-2 is hinged to the frame 1-1. The paper roll positioning device 1-4 includes a hydraulic cylinder 1-4-1, the bottom of which is fixed to the frame 1-1, and the other end is rotatably connected to the connecting plate 1-4-2. The connecting plate 1-4-2 is rotatably connected to the connecting plate support 1-4-3. 1-4-3 is fixedly connected to the frame 1-1. The other end of the connecting plate 1-4-2 is rotatably connected to the positioning shaft 1-4-4 to form a lever. The positioning shaft 1-4-4 is slidably connected to the fixed seat 1-4-5. The fixed seat 1-4-5 is fixedly installed on the frame 1-1. The paper roll clamping device 1-5 is provided with a hydraulic cylinder seat 1-5-1. The hydraulic cylinder seat 1-5-1 is connected to the bottom of the hydraulic cylinder 1-5-2. The upper end of the hydraulic cylinder 1-5-2 is rotatably connected to the clamping plate 1-5-3. The middle part of the clamping plate 1-5-3 is rotatably connected to the clamping plate support 1-5-4.

[0022] Furthermore, such as Figure 2 As shown, the paper roll drive device 1-6 includes a motor base 1-6-1 with a motor 1-6-2 mounted on top. The motor 1-6-2 is connected to a reducer 1-6-4 via a coupling 1-6-3. A pulley 1-6-5 is mounted on one end of the reducer 1-6-4, and a belt 1-6-6 is mounted on the pulley 1-6-5. The device also includes a transmission bracket 1-6-10, with a fixed seat 1-6-14 on top of the transmission bracket 1-6-10. A brake wheel 1-6-13 is mounted on the fixed seat 1-6-14. The transmission shaft 1-6-7 connects to the brake wheel. 1-6-13 is connected by a key. One end of the drive shaft 1-6-7 is equipped with a clutch 1-6-9, and the other end is equipped with another pulley 1-6-5. The two pulleys 1-6-5 are connected by a belt 1-6-6. The brake 1-6-8 is fixed on the transmission bracket 1-6-10. The lower part of the transmission bracket 1-6-10 is equipped with a hydraulic cylinder 1-6-11. The hydraulic cylinder 1-6-11 is connected to the shift fork 1-6-12. The hydraulic cylinder 1-6-11 pushes the shift fork 1-6-12 to separate and engage the drive shaft 1-6-7 with the paper roll shaft.

[0023] like Figure 3-4 As shown, the transfer arm mechanism 2 includes a first rotating arm 2-1, a second rotating arm 2-2, a rotating arm connecting shaft 2-3, a rotating arm fixing seat 2-4, a paper roll shaft locking device 2-5, a second paper roll shaft driving device 2-6, a transmission belt 2-7, a hydraulic cylinder 2-8, and a hydraulic cylinder fixing seat 2-9; The bottom of the first rotating arm 2-1 and the second rotating arm 2-2 are connected to the rotating arm connecting shaft 2-3. The rotating arm connecting shaft 2-3 is provided with a hinge seat that is rotatably connected to the front end of the hydraulic cylinder 2-8. The rear end of the hydraulic cylinder 2-8 is rotatably connected to the hydraulic cylinder fixing seat 2-9. The rotating arm connecting shaft 2-3 is hinged to the rotating arm fixing seat 2-4. The upper part of the first rotating arm 2-1 is provided with a paper roll shaft driving device 2-6, which has the same structure as the first paper roll shaft driving device 1-6. The upper outer side of the first rotating arm 2-1 and the second rotating arm 2-2 is provided with a paper roll shaft locking device 2-5, which includes a hydraulic fixing seat 2-5-1, a hydraulic cylinder 2-5-2, and a fixing clamp 2-5-3.

[0024] like Figure 5 As shown, the paper receiving mechanism 3 includes a frame 3-1, a frame 3-2, a lifting device 3-3, a guide roller 3-4, a guide roller 3-5, a roller frame device 3-6, a paper pressing roller device 3-7, and a paper cutting knife device 3-8. Lifting devices 3-3 are provided at the bottom of frame 1 (3-1) and frame 2 (3-2). Roller frame device 3-6 is provided on the upper part of frame 1 (3-1) and frame 2 (3-2). Guide roller 3-4 is provided at the front end of the inner side of roller frame device 3-6. Drive pulley is provided at the end of guide roller 3-4. Pressing roller device 3-7 is provided in the middle of the inner side of roller frame device 3-6. Pressing roller device 3-7 is mounted on pressing roller fixing arm 3-9. Hydraulic cylinder 3-10 is provided at the lower part of pressing roller fixing arm 3-9. Hydraulic cylinder 3-10 is fixed on the distance beam 3-11. Guide roller 2 (3-5) is provided at the rear end of the inner side of roller frame device 3-6. Paper cutter device 3-8 is provided on guide roller 2 (3-5). Paper cutter device 3-8 rotates around guide roller 3-4. Synchronous pulleys are provided at the ends of guide roller 3-4, pressing roller device 3-7, and guide roller 2 (3-5). They are connected by synchronous belts.

[0025] Furthermore, the paper roll frame mechanism 4 includes a roll frame 4-1, a guide rail 4-2, a buffer cylinder support 4-3, a buffer cylinder 4-4, and a baffle 4-5; The winding frame 4-1 is equipped with a buffer cylinder support 4-3, which is connected to a buffer cylinder 4-4. The other end of the buffer cylinder 4-4 is connected to a baffle 4-5. A downward-sloping guide rail 4-2 is fixed on the top of the winding frame 4-1 to allow the winding drum to slide down naturally and provide buffering.

[0026] An automatic unwinding method for full-speed non-stop operation is applied to the aforementioned full-speed non-stop roll changing device. The operating steps of the full-speed non-stop roll changing device are as follows: Initially, the roll positioning device 1-4 performs an upward movement and reaches the raised position; the roll clamping device 1-5 performs a separating movement and reaches the separated position; after the shift fork device 1-3 pushes the mother roll to the working position, the roll clamping device 1-5 performs a closing movement and reaches the closed position; the hydraulic cylinder 1-6-11 pushes the roll drive device 1-6 to hold one end of the roll head; the roll head begins to rotate; when the roll diameter reaches the pre-connected paper diameter, the transfer arm mechanism 2 starts and rotates to the roll head position; the roll locking device 2-5 on the upper part of the transfer arm mechanism 2 clamps the roll bearing chamber; the roll drive device 2-6 on the transfer arm mechanism 2 operates, and when the speed accelerates to match the current machine speed, the hydraulic cylinder on the roll drive device 2-6 pushes the roll drive device 2-6 to hold the other end of the roll head. At this time, hydraulic cylinder 1-6-11 pushes the paper roll drive device 1-6 to disengage one side of the paper roll head; at the same time, the paper roll positioning device 1-4 performs a falling action and reaches the falling position. The transfer arm mechanism 2 carries the paper roll and begins to move towards the paper receiving structure 3. When the transfer arm mechanism 2 carries the paper roll to the top of the paper receiving mechanism 3, it stops. At this time, a new mother roll is pushed into the paper roll holder. When the diameter of the paper roll on the paper roll has met the conditions for changing the roll, the paper receiving mechanism 3 starts to operate. The lifting device 3-3 drives the roller frame device 3-6 to rise. When the paper pressure roller device 3-7 of the roller frame device 3-6 touches the mother roll, the paper cutter device 3-8 lifts up and cuts the paper. The paper receiving action is completed, and the automatic roll changing ends.

[0027] When the paper roll drive device 1-6 is not disengaged from the paper roll, and the paper roll drive device 2-6 is gripping the other side of the paper roll head, the speeds of the two drive devices must be highly synchronized. The speed control of the two drive devices is achieved as follows: When the diameter is less than 1300mm, the transfer arm drive operates with a frequency setpoint consistent with the unwinding drive, and a torque setpoint close to 0%. After the actual speed matches the unwinding speed, the receiving arm clutch engages and grips tightly. Ten seconds after gripping or reaching the limit, the unwinding torque decreases by a ramp, while the transfer arm drive torque increases by a ramp. This ensures that the sum of the torques at both drive points remains constant. When the unwinding torque drops to 0%, the unwinding clutch automatically disengages, and the drive stops.

[0028] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A full-speed, non-stop unwinding device, characterized in that, include: Paper roll holder mechanism (1) is provided with a paper roll feeding mechanism, a positioning mechanism, and a paper roll shaft drive device (1-6) for rotating the paper roll to unwind it. The transfer arm mechanism (2) is provided with a paper roll shaft locking device (2-5) and a paper roll shaft driving device (2-6) for maintaining the same speed as the paper roll shaft driving device (1-6). Paper receiving mechanism (3), and paper cutting knife device (3-8) is provided on the paper receiving mechanism (3). Paper roll frame mechanism (4) is used to guide and collect the paper roll after it has been unloaded; The paper roll holder mechanism (1) includes a frame (1-1) and a paper roll shaft limiting device (1-2) and a shift fork device (1-3) disposed at one end of the frame (1-1); a paper roll shaft positioning device (1-4) and a paper roll shaft clamping device (1-5) disposed at the other end of the frame (1-1); and a paper roll shaft driving device (1-6) disposed on the outside of the frame (1-1). The paper roll drive device (1-6) includes a motor base (1-6-1) with a motor (1-6-2) mounted on top. The motor (1-6-2) is connected to a reducer (1-6-4) via a coupling (1-6-3). A pulley (1-6-5) is mounted on one end of the reducer (1-6-4), and a belt (1-6-6) is mounted on the pulley (1-6-5). The device also includes a transmission bracket (1-6-10), with a fixed seat (1-6-14) on top of the transmission bracket (1-6-10). A brake wheel (1-6-13) is mounted on the fixed seat (1-6-14). The transmission shaft (1-6-7) and the brake wheel (1-6-13) are connected. 13) The drive shaft (1-6-7) is connected by a key. One end of the drive shaft (1-6-7) is equipped with a clutch (1-6-9), and the other end is equipped with another pulley (1-6-5). The two pulleys (1-6-5) are connected by a belt (1-6-6). The brake (1-6-8) is fixed on the drive bracket (1-6-10). The lower part of the drive bracket (1-6-10) is equipped with a third hydraulic cylinder (1-6-11). The third hydraulic cylinder (1-6-11) is connected to the second shift fork (1-6-12). The third hydraulic cylinder (1-6-11) pushes the second shift fork (1-6-12) to realize the separation and engagement of the drive shaft (1-6-7) and the paper roll shaft. The transfer arm mechanism (2) includes a first rotating arm (2-1), a second rotating arm (2-2), a rotating arm connecting shaft (2-3), a rotating arm fixing seat (2-4), a paper roll shaft locking device (2-5), a second paper roll shaft driving device (2-6), a transmission belt (2-7), a fifth hydraulic cylinder (2-8), and a hydraulic cylinder fixing seat (2-9). The bottom of the first rotating arm (2-1) and the second rotating arm (2-2) are connected to the rotating arm connecting shaft (2-3). The rotating arm connecting shaft (2-3) is provided with a hinge seat that is rotatably connected to the front end of the fifth hydraulic cylinder (2-8). The rear end of the fifth hydraulic cylinder (2-8) is rotatably connected to the hydraulic cylinder fixing seat (2-9). The rotating arm connecting shaft (2-3) is hinged to the rotating arm fixing seat (2-4). The upper part of the first rotating arm (2-1) is provided with a paper roll shaft driving device two (2-6). The paper roll shaft driving device two (2-6) has the same structure as the paper roll shaft driving device one (1-6). The upper outer side of the first rotating arm (2-1) and the second rotating arm (2-2) is provided with a paper roll shaft locking device (2-5). The paper roll shaft locking device (2-5) includes a hydraulic fixing seat (2-5-1), a fourth hydraulic cylinder (2-5-2), and a fixing clamp (2-5-3). The first roll drive device (1-6) and the second roll drive device (2-6) achieve full-speed, non-stop roll changing according to the following control logic: When the paper roll diameter is less than 1300mm, the transfer arm drive operates with a frequency setpoint consistent with the unwinding drive frequency setpoint, and its torque setpoint is close to 0%. When the actual speed of the transfer arm drive matches the actual speed of the unwinding drive, the paper receiving arm clutch engages, and the transfer arm clamps in place. Ten seconds after clamping or when the limit is reached, the torque of the unwinding drive decreases by the ramp, and the torque of the transfer arm drive increases by the ramp, while ensuring that the sum of the torques at the two transmission points of the unwinding drive and the transfer arm drive remains unchanged. When the torque of the unwinding drive drops to 0%, the unwinding clutch automatically disengages, the unwinding drive disengages and stops.

2. The full-speed non-stop unwinding device as described in claim 1, characterized in that, The shift fork device (1-3) includes a cylinder (1-3-1), the bottom of which is fixed to the frame (1-1), and the upper end of which is connected to the first shift fork (1-3-2) via a pin. The other end of the first shift fork (1-3-2) is hinged to the frame (1-1). The paper roll positioning device (1-4) includes a first hydraulic cylinder (1-4-1), the bottom of which is fixed to the frame (1-1), and the other end is rotatably connected to the connecting plate (1-4-2). The connecting plate (1-4-2) is rotatably connected to the connecting plate support (1-4-3). 1-4-3) The fixed connection frame (1-1) is fixedly connected. The other end of the connecting plate (1-4-2) is rotatably connected to the positioning shaft (1-4-4) to form a lever. The positioning shaft (1-4-4) is slidably connected to the fixed seat (1-4-5). The fixed seat (1-4-5) is fixedly installed on the frame (1-1). The paper roll clamping device (1-5) is equipped with a hydraulic cylinder seat (1-5-1). The hydraulic cylinder seat (1-5-1) is connected to the bottom of the second hydraulic cylinder (1-5-2). The upper end of the second hydraulic cylinder (1-5-2) is rotatably connected to the clamping plate (1-5-3). The middle part of the clamping plate (1-5-3) is rotatably connected to the clamping plate support (1-5-4).

3. The full-speed, non-stop unwinding device as described in claim 1, characterized in that, The paper receiving mechanism (3) includes a frame one (3-1), a frame two (3-2), a lifting device (3-3), a guide roller one (3-4), a guide roller two (3-5), a roller frame device (3-6), a paper pressing roller device (3-7), and a paper cutting knife device (3-8). Lifting devices (3-3) are provided at the bottom of frame one (3-1) and frame two (3-2). Roller frame devices (3-6) are provided on the upper part of frame one (3-1) and frame two (3-2). A guide roller (3-4) is provided at the front end of the inner side of the roller frame device (3-6). A drive pulley is provided at the end of the guide roller (3-4). A paper pressure roller device (3-7) is provided in the middle of the inner side of the roller frame device (3-6). The paper pressure roller device (3-7) is mounted on the pressure roller fixing arm (3-9). The lower part has a sixth hydraulic cylinder (3-10), which is fixed on the fixed distance beam (3-11); the inner rear end of the roller frame device (3-6) is provided with a second paper guide roller (3-5), and the second paper guide roller (3-5) is provided with a paper cutter device (3-8), which rotates around the first guide roller (3-4); the first guide roller (3-4) and the end of the pressure roller device (3-7) and the second guide roller (3-5) are provided with synchronous pulleys, which are connected to each other by a synchronous belt.

4. The full-speed, non-stop unwinding device as described in claim 1, characterized in that, The paper roll frame mechanism (4) includes a roll frame (4-1), a guide rail (4-2), a buffer cylinder support (4-3), a buffer cylinder (4-4), and a second baffle (4-5). The winding frame (4-1) is provided with a buffer cylinder support (4-3), which is connected to the buffer cylinder (4-4). The other end of the buffer cylinder (4-4) is connected to the second baffle (4-5). The top of the winding frame (4-1) is fixed with a downward-sloping guide rail (4-2) so that the winding roll slides down naturally and a buffer is set.

5. A full-speed, non-stop automatic unwinding method, applied to a full-speed, non-stop rewinding device as described in claims 1-4, characterized in that: The operating steps of a full-speed non-stop roll changing device are as follows: Upon initial roll loading, the roll shaft positioning device (1-4) performs an upward movement and reaches the raised position; the roll shaft clamping device (1-5) performs a separating movement and reaches the separated position; the shift fork device (1-3) pushes the mother roll to the working position; the roll shaft clamping device (1-5) performs a closing movement and reaches the closed position; the third hydraulic cylinder (1-6-11) pushes the first paper shaft drive device (1-6) to hold one end of the roll shaft head; the roll shaft begins to rotate; when the paper roll diameter reaches the pre-connected paper diameter, the transfer arm mechanism (2) starts, rotating to the roll shaft position; the roll shaft locking device (2-5) on the upper part of the transfer arm mechanism (2) clamps the roll shaft bearing chamber; the second roll shaft drive device (2-6) on the transfer arm mechanism (2) runs; when the speed accelerates to match the current machine speed, the hydraulic cylinder on the second roll shaft drive device (2-6) pushes the second roll shaft drive device (2-6) to hold the other end of the roll shaft head. At this time, the third hydraulic cylinder (1-6-11) pushes the paper roll drive device (1-6) to disengage from one side of the paper roll head; at the same time, the paper roll positioning device (1-4) performs the falling action and reaches the falling position. The transfer arm mechanism (2) moves the paper roll towards the paper receiving structure (3). When the transfer arm mechanism (2) moves the paper roll directly above the paper receiving mechanism (3), it stops. At this time, a new mother roll is pushed into the paper roll holder. When the diameter of the paper roll on the paper roll has met the conditions for changing the roll, the paper receiving mechanism (3) starts to operate. The lifting device (3-3) drives the roller frame device (3-6) to rise. When the roller frame device (3-6) and the paper pressing roller device (3-7) touch the mother roll, the paper cutting knife device (3-8) lifts up to cut the paper. The paper receiving action is completed, and the automatic roll changing ends.

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