Paper storage and feeding device

Abstract

The present invention discloses a paper storage and feeding device, comprising a paper storage chamber and an unwinding device bolted to the front end of the paper storage chamber, and a paper feeding device bolted to the rear end of the paper storage chamber, the paper storage chamber comprises a frame, a fixed roller, a movable roller frame slideway, and a supporting foot pad for supporting the frame, the unwinding device comprises an unwinding frequency conversion motor, a pressure roller cylinder, a pressure roller beam, an unwinding pressure roller, a pressure roller slideway, and an unwinding power roller, and the paper feeding device comprises a paper feeding servo motor, a paper feeding pressure roller cylinder, a paper feeding pressure roller beam, a pressure plate frame, a paper feeding pressure plate, a paper feeding pressure roller, a paper feeding pressure roller slideway, and a paper feeding power roller. The present invention has the function of enabling large-diameter paper rolls on straight paper packaging equipment, and can achieve smooth paper feeding and stable paper guiding, reduce the labor intensity of workers, save roll changing time, improve work efficiency, reduce paper loss, and save packaging costs.

Description

Technical Field

[0001] The invention relates to the field of aluminum profile paper packaging equipment, and in particular to a paper storage and feeding device. Background Art

[0002] In profile production enterprises, aluminum profile packaging is the last process, which should not be underestimated. Packaging is also very particular. Before packaging, the quality inspection must do a final inspection on each aluminum profile. Only after the inspection is qualified can the packing workers start packaging. Generally, manual packaging is used, but manual packaging has low efficiency, low packaging quality, waste of packaging materials, and increased packaging costs.

[0003] Nowadays, profile manufacturers will purchase straight paper packaging machines, which are not only more efficient, but also have higher packaging quality. At present, aluminum profile paper automatic packaging machines all use small rolls of packaging paper with a diameter of about 300mm, and cannot use large rolls of packaging paper with a diameter of 1200mm. There are two defects in small rolls of packaging paper: one is that the quantity is small. The packaging efficiency of the packaging machine is generally very high, and the use time of small rolls of packaging paper is short, and the paper rolls need to be replaced frequently, which affects the production efficiency; second, the small roll of packaging paper is made by slitting and rewinding large rolls of packaging paper, and the production cost is higher than that of large rolls of packaging paper, so the price is higher than that of large rolls of packaging paper.

[0004] If large rolls of wrapping paper with a diameter of 1200mm are used directly, the packaging efficiency can be improved and the procurement cost of the aluminum profile factory can be reduced. However, during the use of large rolls of wrapping paper with a diameter of 1200mm, the existing equipment cannot stably guide the paper and accurately transmit the paper feeding amount. In addition, the rotational inertia of wrapping paper with a large roll diameter is much greater than that of wrapping paper with a small roll diameter. During the intermittent stop of the equipment, the roll paper is easily caused to roll and fold uncontrollably, which not only wastes raw materials and increases costs, but also affects subsequent packaging work. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a paper storage and feeding device which can stably guide paper and ensure constant tension of paper.

[0006] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0007] A paper storage and feeding device comprises a paper storage chamber and a reeling device bolted to the front end of the paper storage chamber, and a paper feeding device bolted to the rear end of the paper storage chamber, the paper storage chamber comprises a frame, a fixed roller, a movable roller frame slide, and a supporting foot pad for supporting the frame, the front inner wall of the paper storage chamber wall, the chamber top plate, and the rear inner wall are bolted with a plurality of fixed rollers, the movable roller frame slide is bolted to both sides of the frame in the paper storage chamber, the movable roller frame slide is symmetrically welded to both sides of the frame in the paper storage chamber, sensor frames are bolted to both sides of the movable roller frame slide, a sensing device is installed at the upper and lower ends of the sensor frame, a movable roller frame is horizontally placed between the movable roller frame slides, a slider is bolted to the position of the movable roller frame corresponding to the movable roller frame slide, the slider cooperates with the movable roller frame slide to realize the movable roller frame sliding up and down, an array of corresponding movable roller seat groups are bolted to the upper ends of both sides of the movable roller frame, and the movable roller frame rotates through the movable roller seat group The cam is connected to the upper and lower frames by the spring which are ...

[0008] Furthermore, the unwinding device includes an unwinding frequency conversion motor, a pressure roller cylinder, a pressure roller beam, an unwinding pressure roller, a pressure roller slideway, and an unwinding power roller. The unwinding frequency conversion motor is on the front end frame, the pressure roller cylinder is bolted and fixed above the unwinding frequency conversion motor, the pressure roller beam is fixedly connected to the piston column end of the pressure roller cylinder by a nut, the unwinding pressure roller is bolted and fixed to the outer side of the pressure roller beam, the pressure roller slideway is bolted and fixed to the front end column of the frame, pressure roller sliders corresponding to the positions of the pressure roller slideways are welded at both ends of the inner side of the pressure roller beam, the pressure roller slideway is relatively slidably connected to the pressure roller slider to prevent the position of the unwinding pressure roller from changing when the pressure roller beam moves up and down, the unwinding power roller is arranged below the unwinding pressure roller, the unwinding power roller is rotatably connected to the front end of the frame through a roller seat, and the unwinding power roller is connected to the unwinding frequency conversion motor through a synchronous belt to realize power output;

[0009] Furthermore, the paper feeding device includes a paper feeding servo motor, a paper feeding roller cylinder, a paper feeding roller beam, a pressure plate frame, a paper feeding pressure plate, a paper feeding roller, a paper feeding roller slide, and a paper feeding power roller. The paper feeding servo motor is on the rear end frame, the cylinder seat of the paper feeding roller cylinder is bolted and fixed above the paper feeding servo motor, the paper feeding roller beam is connected to the piston column end nut of the paper feeding roller cylinder, the paper feeding roller bolt is fixed on the outer side of the paper feeding roller beam, the pressure plate frame bolt is fixed on the outer side of the paper feeding roller beam, the pressure plate frame extends downward to the back of the paper feeding roller, and the extended end of the pressure plate frame is horizontal A paper feed pressure plate is welded, and the horizontal position of the paper feed pressure plate is lower than that of the paper feed pressure roller. The paper feed pressure roller slideway is bolted and fixed on the outer side of the rear end column of the frame. Roller sliders corresponding to the position of the paper feed pressure roller slideway are welded at both ends of the inner side of the paper feed pressure roller crossbeam. The paper feed pressure roller slideway is relatively slidably connected with the roller slider to prevent the position of the paper feed pressure roller from changing when the paper feed pressure roller crossbeam moves up and down. The paper feed power roller is arranged below the paper feed pressure roller. The paper feed power roller is fixed on the rear end column of the frame through a roller seat bolt. The paper feed power roller is connected to the paper feed servo motor through a synchronous belt to realize power output.

[0010] Further, the torque generating device is preferably a magnetic powder brake;

[0011] Further, the paper roll fixing shaft is preferably an air expansion shaft;

[0012] Furthermore, an observation door is rotatably connected to the outer side of the paper storage chamber, an observation window is provided on the observation door, and an integrated power box including a control power supply and a PLC system unit is bolted to the opposite side of the observation door;

[0013] Furthermore, the torque generating device is controlled by an integrated power box, the sensing device is electrically connected to the PLC system unit of the integrated power box, the unwinding frequency conversion motor is controlled by the PLC system unit of the integrated power box, the paper feeding servo motor is controlled by the PLC system unit of the integrated power box, the winding cylinder is controlled by the PLC system unit of the integrated power box, the pressure roller cylinder is controlled by the PLC system unit of the integrated power box, and the paper feeding pressure roller cylinder is controlled by the PLC system unit of the integrated power box.

[0014] The beneficial effects of the present invention are:

[0015] 1. This device achieves force balance during unwinding and feeding through the gravity of the moving roller frame in the paper storage room and the tension of the paper. The torque generating device installed on the upper roll rocker arm can ensure that the equipment limits the rotational inertia caused by the weight of the paper roll during rotation when unwinding, ensuring that the paper remains flat when passing through the unwinding device, avoiding accidents during work, stabilizing paper feeding, avoiding paper waste, and improving work efficiency.

[0016] 2. The paper feeding pressing plate is horizontally arranged at the extended end of the pressing plate frame, and the horizontal position of the paper feeding pressing plate is lower than the paper feeding pressing roller, so as to ensure that the packaging paper keeps moving horizontally when it passes through the paper storage and feeding device and enters the next process;

[0017] 3. This device can be equipped with large-diameter paper rolls, so packaging workers do not need to change rolls frequently, saving time and labor for changing rolls and improving work efficiency. The unwinding device and paper feeding device are driven by two motors respectively, which are interconnected but not affected by each other. During the unwinding and feeding process, the paper will not be broken or piled up. In addition, packaging companies can directly use large-diameter paper rolls without processing small-diameter rolls, which also reduces most of the loss of small-diameter paper rolls at the beginning and end;

[0018] 4. The upper roll rocker arm is movably connected to the upper roll cylinder piston through a pin shaft near the far end. When changing the roll, the worker only needs to pass the paper roll fixing shaft through the paper roll and then place it on the far end of the upper roll rocker arm. The upper roll rocker arm lifts the paper roll through the upper roll cylinder, which reduces the labor intensity of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the general assembly drawing of the paper storage and cutting device;

[0020] Figure 2 This is the side view of the observation door for the paper storage and cutting device;

[0021] Figure 3 Side view of the integrated power box for the paper storage and cutting device;

[0022] Figure 4 This is the front view of the unwinding device;

[0023] Figure 5 It is a side view of the unwinding device;

[0024] Figure 6 This is the front view of the paper feeding device;

[0025] Figure 7 is a side view of the paper feeding device;

[0026] Figure 8 Place structural diagram for paper rolls;

[0027] The following are marked in the figure: 1, paper storage chamber; 2, unwinding device; 3, paper feeding device; 4, upper roll cylinder; 5, upper roll rocker arm; 6, torque generating device; 7, bearing group; 8, gear group; 9, paper roll fixing shaft; 10, shaft gear; 11, frame; 12, fixed roller; 13, movable roller frame slideway; 14, supporting foot pad; 15, movable roller frame; 151, movable roller seat group; 152, movable roller; 16, synchronous belt; 17, observation door; 18, integrated circuit Source box; 19. Sensor frame; 20. Paper roll; 21. Unwinding frequency conversion motor; 22. Pressure roller cylinder; 23. Pressure roller beam; 24. Unwinding pressure roller; 25. Pressure roller slide; 26. Unwinding power roller; 27. Pressure roller slider; 31. Paper feeding servo motor; 32. Paper feeding pressure roller cylinder; 33. Paper feeding pressure roller beam; 34. Pressure plate frame; 35. Feed finger pressure plate; 36. Paper feeding pressure roller; 37. Paper feeding pressure roller slide; 38. Paper feeding power roller. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0029] The examples are as follows:

[0030] Depend on Figure 1 , Figure 2 , Figure 3 , Figure 8A paper storage and feeding device is shown, comprising a paper storage chamber 1 and a reeling device 2 bolted to the front end of the paper storage chamber 1, and a paper feeding device 3 bolted to the rear end of the paper storage chamber 1, an observation door 17 is movably provided on one side outside the paper storage chamber 1, and an observation window is provided on the observation door 17, and an integrated power supply box 18 including a control power supply and a PLC system unit is fixedly provided on the opposite side of the observation door 17, the paper storage chamber 1 comprises a frame 11, a fixed roller 12, a movable roller frame slide 13, and a support foot pad 14 for supporting the frame 11, and the front inner wall, the chamber top plate, and the rear inner wall of the inner wall of the paper storage chamber 1 are all bolted A plurality of fixed rollers 12 are provided, and the movable roller frame slideway 13 is symmetrically welded on both sides of the frame 11 in the paper storage chamber 1, and a sensor frame 19 is fixedly provided with bolts on both sides of the movable roller frame slideway 13, and a sensing device is provided at the upper and lower ends of the sensor frame 19, and a movable roller frame 15 is horizontally placed between the movable roller frame slideways 13, and a slider is welded on the movable roller frame 15 at a position corresponding to the movable roller frame slideway 13, and the slider cooperates with the movable roller frame slideway 13 to realize the movable roller frame 15 sliding up and down, and an array of movable roller seat groups 151 corresponding to the upper ends of the two sides of the movable roller frame 15 are fixedly provided with bolts, and the movable roller frame 15 is connected to the movable roller seat group 1 51 is rotatably connected to a movable roller 152; a roll-up cylinder 4 is symmetrically provided on the frame 11 below the unwinding device 2 in the vertical direction, and the roll-up cylinder 4 is controlled by a PLC system unit of an integrated power supply box 18. The roll-up cylinder 4 is rotatably connected to the column of the frame 11, and a roll-up rocker arm 5 is symmetrically provided on the frame 11 below the roll-up cylinder 4 in the vertical direction, and the roll-up rocker arm 5 is rotatably connected to the column of the frame 11. A torque generating device 6 is detachably connected to the distal end of the roll-up rocker arm 5 on one side, and the torque generating device 6 is preferably a magnetic powder brake, and the torque generating device 6 is controlled by an integrated power supply box 18. The distal end of the upper winding rocker arm 5 on the other side is keyed to a bearing group 7, and the bearing group 7 is an open U-shaped structure. The power output end of the torque generating device 6 is keyed to a gear group 8, and the gear group 8 is an open U-shaped structure. The upper winding rocker arm 5 is connected to the piston of the upper winding cylinder 4 near the distal end through a pin shaft, and a paper roll fixing shaft 9 is detachably connected between the torque generating device 6 and the bearing group 7. The paper roll fixing shaft 9 takes precedence over the air shaft. The paper roll fixing shaft 9 passes through one end of the paper roll 20 and is placed on the bearing group 7, and a shaft gear 10 is fixed on the other end. The shaft gear 10 is meshed with the gear group 8 and is placed on the gear group 8.

[0031] Depend on Figure 4 , Figure 5The unwinding device 2 shown includes an unwinding variable frequency motor 21, a pressure roller cylinder 22, a pressure roller beam 23, an unwinding pressure roller 24, a pressure roller slide 25, and an unwinding power roller 26. The unwinding variable frequency motor 21 is on the front frame 11, and the unwinding variable frequency motor 21 is controlled by a PLC system unit of an integrated power box 18. The pressure roller cylinder 22 is bolted above the unwinding variable frequency motor 21, and the pressure roller beam 23 is bolted to the piston column end of the pressure roller cylinder 22. The unwinding pressure roller 24 is fixed on the outer side of the pressure roller beam 23, and the pressure roller slide 25 is connected to the piston column end of the pressure roller cylinder 22. The roller slide 25 is bolted to the front end column of the frame 11, and roller sliders 27 corresponding to the position of the roller slide 25 are bolted to the two ends of the inner side of the roller beam 23. The roller slide 25 is relatively slidably connected with the roller slider to prevent the position of the unwinding roller 24 from changing when the roller beam 23 moves up and down. The unwinding power roller 26 is arranged below the unwinding roller 24, and the unwinding power roller 26 is rotatably connected to the front end of the frame 11 through a roller seat. The unwinding power roller 26 is connected to the unwinding frequency conversion motor 21 through a synchronous belt 16 to realize power output.

[0032] Depend on Figure 6 , Figure 7 The paper feeding device 3 shown includes a paper feeding servo motor 31, a paper feeding pressure roller cylinder 32, a paper feeding pressure roller beam 33, a pressure plate frame 34, a paper feeding pressure plate 35, a paper feeding pressure roller 36, a paper feeding pressure roller slide 37, and a paper feeding power roller 38. The paper feeding servo motor 31 is on the rear end frame 11, and the paper feeding servo motor 31 is controlled by the PLC system unit of the integrated power box 18. The cylinder seat of the paper feeding pressure roller cylinder 32 is bolted above the paper feeding servo motor 31, and the paper feeding pressure roller cylinder 32 is controlled by the PLC system unit of the integrated power box 18. The paper feeding pressure roller beam 33 is connected to the piston column end of the paper feeding pressure roller cylinder 32 by bolts, and the paper feeding pressure roller 36 is bolted to the outer side of the paper feeding pressure roller beam 33, and the pressure plate frame 34 is bolted to the paper feeding pressure roller beam 3 On the outer side, after the pressure plate frame 34 extends downward to the paper feeding roller 36, a paper feeding pressure plate 35 is horizontally welded at the extended end of the pressure plate frame 34. The horizontal position of the paper feeding pressure plate 35 is lower than that of the paper feeding roller 36. The paper feeding roller slide 37 is fixedly arranged on the outer side of the rear end column of the frame body 11. The two ends of the inner side of the paper feeding roller beam 33 are welded with roller sliders 27 corresponding to the position of the paper feeding roller slide 37. The paper feeding roller slide 37 is relatively slidably connected with the roller slider to prevent the position of the paper feeding roller 36 from changing when the paper feeding roller beam 33 moves up and down. The paper feeding power roller 38 is arranged below the paper feeding roller 36. The paper feeding power roller 38 is fixed to the rear end column of the frame body 11 through roller seat bolts. The paper feeding power roller 38 is connected to the paper feeding servo motor 31 through a synchronous belt 16 to realize power output.

[0033] Before the straight paper packaging machine works, the worker first passes the paper roll fixing shaft 9 through the paper roll 20 with a large roll diameter, and then controls the upper roll cylinder 4 to extend the cylinder plunger through the PLC system unit of the integrated power box 18 to move the far end of the upper roll rocker arm 5 downward until the worker can place the paper roll fixing shaft 9 on the bearing group 7 and the gear group 8. Then, the PLC system unit of the integrated power box 18 controls the upper roll cylinder 4 to retract the cylinder plunger to move the far end of the upper roll rocker arm 5 upward, and cooperates with the paper roll fixing shaft 9 to lift the paper roll 20. The worker pulls out the paper head of the paper roll counterclockwise to bypass the fixed roller 12 connected to the top of the upper roll rocker arm 5, and controls the pressure roller cylinder 22 fixed to the pressure roller beam 2 through the PLC system unit of the integrated power box 18. 3, then reversely bypass the unwinding power roller 26, then enter the paper storage chamber 1, reversely bypass the fixed roller 12 on the inner side of the front end of the frame 11 again, and in the paper storage chamber 1, the packaging paper alternately bypasses the fixed roller 12 on the top of the frame 11 and the movable roller 152 on the movable roller frame 15 in turn, bypasses the fixed roller 12 on the top of the frame 11 clockwise, bypasses the movable roller 152 on the movable roller frame 15 counterclockwise, and then bypasses the fixed roller 12 on the inner side of the rear end of the frame 11 clockwise, and finally controls the paper feeding pressure roller cylinder 32 of the integrated power box 18 to lift the paper feeding pressure roller 36 fixed on the paper feeding pressure roller beam 33, so that the packaging paper bypasses the paper feeding power roller 38 clockwise and is pulled out from under the paper feeding pressure plate 35;

[0034] When the straight paper packaging machine is working, in the paper feeding state of the paper pulling device, the PLC system unit first controls the paper feeding roller cylinder 32 to lift the paper feeding roller 36 fixed on the paper feeding roller beam 33, and at the same time, the paper feeding servo motor 31 drives the paper feeding power roller 38 to rotate, so as to achieve the purpose of paper feeding. As the paper in the paper storage chamber 1 is guided, the packaging paper pulls up the moving roller 15 through the fixed roller 12 and the moving roller 152 on the moving roller frame 15. When the moving roller frame 15 reaches the sensor height on the upper part of the sensor frame 19, the sensor sends a command through the PLC system unit to control the roller cylinder 22 to contract the cylinder piston to lift the unwinding roller 24 fixed on the roller beam 23. At the same time, the unwinding frequency conversion motor 21 drives the unwinding power roller 26 to rotate, so as to achieve the purpose of unwinding. The worker controls the input current of the torque generating device 6 to control the torque according to the actual situation, so that the paper roll 20 can rotate smoothly to prevent the paper from stacking before entering the paper storage chamber 1.

[0035] During the unwinding process, the movable roller frame starts to slide downward along the movable roller frame slideway 13 due to gravity. When the movable roller frame 15 reaches the sensor height at the bottom of the sensor frame 19, the sensor sends a command through the PLC system unit to control the pressure roller cylinder 22 to extend the cylinder piston to move the unwinding pressure roller 24 fixed on the pressure roller beam 23 downward. At the same time, the unwinding frequency conversion motor 21 and the unwinding power roller 26 stop rotating, and the torque generating device 6 stops working. At this time, the sensor sends a command through the PLC system unit to control the paper feeding pressure roller cylinder 32 to lift the paper feeding pressure roller 36 fixed on the paper feeding pressure roller beam 33. At the same time, the paper feeding servo motor 31 drives the paper feeding power roller 38 to rotate to continue feeding paper. The whole process is a complete unwinding and paper feeding process.

[0036] The invention has the advantages of enabling large-diameter paper rolls on straight paper packaging equipment, and can achieve smooth paper feeding and stable paper guiding, thereby reducing the labor intensity of workers, saving roll changing time, improving work efficiency, reducing paper loss, and saving packaging costs.

Claims

1. A paper storage and feeding device, comprising a paper storage chamber (1), a reeling device (2) fixed at the front end of the paper storage chamber (1), and a paper feeding device (3) fixed at the rear end of the paper storage chamber (1), characterized in that: The paper storage chamber (1) comprises a frame (11), fixed rollers (12), a movable roller frame slideway (13), and a support foot pad (14) for supporting the frame (11). The front inner wall, the chamber top plate, and the rear inner wall of the inner wall of the paper storage chamber (1) are all fixedly provided with a plurality of fixed rollers (12). The movable roller frame slideway (13) is fixedly and symmetrically arranged on both sides of the frame (11) in the paper storage chamber (1). Sensor frames (19) are fixedly arranged on both sides of the movable roller frame slideway (13). The sensor frames (19) are arranged on the upper and lower sides of the sensor frames (19). A sensing device is provided at each end, a movable roller frame (15) is slidably arranged horizontally between the movable roller frame slideways (13), a slider is fixedly arranged at a position on the movable roller frame (15) corresponding to the movable roller frame slideway (13), the slider cooperates with the movable roller frame slideway (13) to realize the movable roller frame (15) sliding up and down, an array of corresponding movable roller seat groups (151) are fixedly arranged at the upper ends of both sides of the movable roller frame (15), and the movable roller frame (15) is rotatably connected to the movable roller (152) through the movable roller seat group (151); A reeling cylinder (4) is symmetrically arranged on the frame (11) below the unwinding device (2) in the vertical direction, and the reeling cylinder (4) is rotatably connected to the frame (11) column; a reeling rocker arm (5) is symmetrically arranged on the frame (11) below the reeling cylinder (4) in the vertical direction, and the reeling rocker arm (5) is rotatably connected to the frame (11) column; a torque generating device (6) is detachably connected to the distal end of the reeling rocker arm (5) on one side, and a bearing group (7) is fixedly arranged on the distal end of the reeling rocker arm (5) on the other side, and the bearing group (7) is in an open U-shape. The invention relates to a structure in which a gear group (8) is fixedly provided at the power output end of the torque generating device (6), the gear group (8) is in an open U-shaped structure, the upper roll rocker arm (5) is movably connected to the piston of the upper roll cylinder (4) near the distal end, a paper roll fixing shaft (9) is detachably connected between the torque generating device (6) and the bearing group (7), the paper roll fixing shaft (9) passes through the paper roll (20), one end of which is placed on the bearing group (7), and the other end of which is fixedly provided with a shaft gear (10), which is meshed with the gear group (8) and placed on the gear group (8); The unwinding device (2) comprises an unwinding variable frequency motor (21), a pressure roller cylinder (22), a pressure roller beam (23), an unwinding pressure roller (24), a pressure roller slideway (25), and an unwinding power roller (26). The pressure roller cylinder (22) is fixedly arranged above the unwinding variable frequency motor (21). The pressure roller beam (23) is fixedly connected to the piston column end of the pressure roller cylinder (22). The unwinding pressure roller (24) is fixedly arranged on the outer side of the pressure roller beam (23). The pressure roller slideway (25) is fixedly arranged on the front end column of the frame (11). 23) A roller slider (27) corresponding to the position of the roller slideway (25) is fixedly provided at both ends of the inner side, the roller slideway (25) and the roller slider are connected in relative sliding relation to prevent the position of the unwinding roller (24) from changing when the roller beam (23) moves up and down, the unwinding power roller (26) is arranged below the unwinding roller (24), the unwinding power roller (26) is fixedly arranged on the front end of the frame (11) through a roller seat, and the unwinding power roller (26) is connected to the unwinding frequency conversion motor (21) through a synchronous belt (16) to realize power output; The paper feeding device (3) comprises a paper feeding servo motor (31), a paper feeding pressure roller cylinder (32), a paper feeding pressure roller beam (33), a pressure plate frame (34), a paper feeding pressure plate (35), a paper feeding pressure roller (36), a paper feeding pressure roller slideway (37), and a paper feeding power roller (38). The cylinder seat of the paper feeding pressure roller cylinder (32) is fixedly arranged above the paper feeding servo motor (31). The paper feeding pressure roller beam (33) is fixedly connected to the piston column end of the paper feeding pressure roller cylinder (32). The paper feeding pressure roller (36) is fixedly arranged on the outer side of the paper feeding pressure roller beam (33). The pressure plate frame (34) is fixedly arranged on the outer side of the paper feeding pressure roller beam (33). After the pressure plate frame (34) extends downward to the paper feeding pressure roller (36), the extended end of the pressure plate frame (34) is horizontally fixedly provided with a paper feeding pressure roller. The paper feeding pressure plate (35) is arranged at a horizontal position lower than the paper feeding pressure roller (36). The paper feeding pressure roller slideway (37) is fixedly arranged on the outer side surface of the rear end column of the frame (11). The inner ends of the paper feeding pressure roller cross beam (33) are fixedly provided with pressure roller sliders (27) corresponding to the position of the paper feeding pressure roller slideway (37). The paper feeding pressure roller slideway (37) is relatively slidably connected with the pressure roller slider to prevent the position of the paper feeding pressure roller (36) from changing when the paper feeding pressure roller cross beam (33) moves up and down. The paper feeding power roller (38) is arranged below the paper feeding pressure roller (36). The paper feeding power roller (38) is fixedly arranged on the rear end column of the frame (11) through a roller seat. The paper feeding power roller (38) is connected to the paper feeding servo motor (31) through a synchronous belt (16) to realize power output.

2. A paper storage and feeding device according to claim 1, characterized in that: An observation door (17) is movably provided on one side outside the paper storage chamber (1), and an observation window is provided on the observation door (17). An integrated power supply box (18) containing a control power supply and a PLC system unit is fixedly provided on the opposite side of the observation door (17).

3. A paper storage and feeding device according to claim 2, characterized in that: The torque generating device (6) is controlled by an integrated power supply box (18), the unwinding variable frequency motor (21) is controlled by a PLC system unit of the integrated power supply box (18), the paper feeding servo motor (31) is controlled by a PLC system unit of the integrated power supply box (18), the winding cylinder (4) is controlled by a PLC system unit of the integrated power supply box (18), the pressure roller cylinder (22) is controlled by a PLC system unit of the integrated power supply box (18), and the paper feeding pressure roller cylinder (32) is controlled by a PLC system unit of the integrated power supply box (18).

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