Precise slitting equipment for ultra-narrow and ultra-thin paper

By adopting a detachable connection structure and intelligent detection and adjustment in the paper slitting equipment, the problems of long cutter roller replacement time and low slitting accuracy have been solved, realizing rapid replacement of cutter rollers and improving slitting accuracy, thereby improving production efficiency and stability.

CN120903318APending Publication Date: 2025-11-07BAIFU (CHANGZHOU) IND AUTOMATION TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510908267.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-02
Publication Date
2025-11-07

AI Technical Summary

Technical Problem

The existing paper slitting equipment has a complex connection structure between the cutter roller and the equipment, which results in a lot of time being spent when replacing the cutter roller, affecting production efficiency. In addition, frequent disassembly and assembly can easily lead to wear and tear on the parts, affecting the slitting accuracy.

Method used

It adopts a detachable connection structure, and the cutting roller can be quickly replaced through limit rods, support springs and fastening bolts. Combined with laser sensors and intelligent error correction modules, it performs real-time detection and adjustment, and uses belt drive and bevel gear set to adjust the winding tension to ensure slitting accuracy.

Benefits of technology

It enables rapid replacement of the cutting roller and improves the slitting accuracy, thereby increasing production efficiency and ensuring the stability and precision of the paper slitting process.

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Abstract

The invention discloses precise slitting equipment for ultra-narrow and ultra-thin paper, and belongs to the technical field of paper processing.The precise slitting equipment comprises a machine body and a first motor, the top of the machine body is fixedly connected with two sets of supporting plates, and an unwinding assembly is arranged between the two sets of supporting plates; the unwinding assembly comprises a first motor fixedly installed on the outer side of one supporting plate, the output end of the first motor is connected with a first rotating shaft, one side of the first rotating shaft is connected with an unwinding roller, the interiors of the two supporting plates are connected with second rotating shafts through bearings, and a cutter roller is arranged between the two second rotating shafts. A connecting block is fixedly connected to the outer portion of the second rotating shaft, a clamping groove is formed in the side, close to the cutter roller, of the connecting block, sliding sleeves are slidably connected to the outer portions of the two sides of the cutter roller, and a limiting groove is formed in the outer portion of the cutter roller.
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Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of paper processing, and particularly relates to a precision slitting device for super-narrow and super-thin paper. BACKGROUND

[0002] A slitting machine is a device for longitudinally slitting wide roll materials, and a device for slitting paper is one type thereof. The main function of the device is to cut wide roll paper materials into narrow roll materials of a certain size in the length direction to prepare for subsequent processing procedures, such as printing paper, bar code labels, and packaging materials.

[0003] The existing paper slitting device has a complex connection structure between a cutter roller and the device. When the cutter roller is replaced, a plurality of tools need to be used, a plurality of parts need to be disassembled for a long time, and the production efficiency is seriously affected. Frequent disassembly and assembly can easily cause part wear, and thus affect the slitting precision. This phenomenon has become a problem to be solved by people in the field. SUMMARY

[0004] The present application aims to provide a precision slitting device for super-narrow and super-thin paper for the existing timber collecting device to solve the problems in the background.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a precision slitting device for super-narrow and super-thin paper, comprising a machine body, two sets of support plates are fixed on the top of the machine body, a winding-off assembly is arranged between the two sets of support plates, the winding-off assembly comprises a first motor fixed to the outer side of the support plate, the output end of the first motor is connected with a first rotating shaft and a winding-off roller, a second rotating shaft is connected to the inner side of the support plate through a bearing, a cutter roller is arranged between the two sets of second rotating shafts, a connecting block with a clamping groove is connected to the outer side of the second rotating shaft, the cutter roller is slidably connected to the connecting block through a limiting rod, a supporting spring and the like, and the cutter roller is detachably connected to the connecting block through a fastening bolt.

[0006] The present application further discloses that a first pulley is sleeved on one set of second rotating shafts, a second pulley is connected to the outer side of the first rotating shaft, and the two pulleys are driven by a first belt body.

[0007] The present application further discloses that a rack and a detection assembly are arranged on the upper side of the machine body and on one side of the support plate; the detection assembly comprises a horizontal sliding rail on the top of the rack, a first sliding block is slidably connected to the horizontal sliding rail, a vertical sliding rail is arranged on one side of the first sliding block, and a second sliding block is slidably connected to the vertical sliding rail; and a laser sensor and an intelligent error correction module are respectively arranged on the two sides of the second sliding block.

[0008] The present application further discloses that a supporting rod and a mounting plate are connected to the bottom of the machine body, and a supporting leg and a mounting frame are arranged at the bottom of the mounting plate.

[0009] The present application further discloses that a feeding frame is slidably connected to the mounting frame, a driving motor is arranged on the side of the feeding frame, and a winding roller is connected to the output end of the motor through a third rotating shaft.

[0010] The first tension assembly is arranged between the mounting frame and the mounting plate, and the second motor is arranged on the side of the supporting rod, and the output end of the second motor is connected with the third belt pulley through a second belt body.

[0011] The fourth belt pulley is connected with the first bevel gear set and the first reciprocating screw rod, the screw rod is sleeved with a first connecting frame, and the first guide plate connected with the screw rod in a threaded manner is slidably connected in the frame.

[0012] The second tension assembly is arranged below the first tension assembly between the mounting frame and the mounting plate, and the fifth belt pulley connected with the output end of the second motor is connected with the sixth belt pulley through a third belt body.

[0013] The sixth belt pulley is connected with the second bevel gear set and the second reciprocating screw rod, the screw rod is sleeved with a second connecting frame, and the second guide plate connected with the screw rod in a threaded manner is slidably connected in the frame.

[0014] The bottom end of the mounting frame is provided with a guide groove, a guide block connected with the bottom of the discharging frame is slidably connected in the guide groove, a slot is arranged on the side of the guide block, and a pin is slidably connected in the slot.

[0015] Compared with the prior art, the present application has the following advantages: the first motor is started to drive the first rotating shaft and the unwinding roller to rotate to realize unwinding, and the cutter roller is rotated to complete paper slitting through belt transmission, the laser sensor is installed on the second sliding block which can move along the transverse and longitudinal sliding rails, the laser sensor performs full-area scanning on the paper, detects the slitting size deviation, and transmits the data to the intelligent error correction module, if it is judged that the blade problem, the first motor is stopped through feedback by loosening the fastening bolt and pulling the sliding sleeve, the cutter roller is quickly replaced, the driving motor is started to drive the third rotating shaft and the winding roller to rotate to wind the slitted paper. The second motor is started to drive the reciprocating screw rod to rotate through the belt and the bevel gear set, so that the first guide plate and the second guide plate alternately extend or shrink to realize stable adjustment of the winding tension. The intelligent error correction module can adjust the rotating speed of the second motor according to the slitting deviation. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. In the drawings: Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the front view of the present application; Figure 3 is a schematic diagram of the cross-sectional structure of the unwinding roller of the present application; Figure 4 is a schematic diagram of the Figure 3 enlarged structure of the area A in the present application Figure 5 is a schematic view of the three-dimensional structure of the tension assembly of the present application; Figure 6 is a schematic view of the top cut structure of the present application; Figure 7 is a schematic view of the Figure 2 enlarged structure of the B area in the present application.

[0017] In the figure: 1, machine body; 2, support plate; 3, unwinding assembly; 301, first motor; 302, first rotating shaft; 303, unwinding roller; 4, second rotating shaft; 5, first pulley; 6, second pulley; 7, first belt body; 8, cutter roller; 9, connecting block; 10, clamping groove; 11, sliding sleeve; 12, limiting groove; 13, limiting rod; 14, limiting block; 15, supporting spring; 16, clamping block; 17, threaded groove; 18, fastening bolt; 19, rack; 20, detection assembly; 2001, transverse sliding rail; 2002, first sliding block; 2003, longitudinal sliding rail; 2004, second sliding block; 2005, laser sensor; 2006, intelligent error correction module; 21, support rod; 22, mounting plate; 23, supporting leg; 24, mounting frame; 25, feeding frame; 26, driving motor; 27, third rotating shaft; 28, winding roller; 29, first tension assembly; 2901, second motor; 2902, third pulley; 2903, second belt body; 2904, fourth pulley; 2905, first bevel gear set; 2906, first reciprocating screw rod; 2907, first connecting frame; 2908, first guide plate; 30, second tension assembly; 3001, second bevel gear set; 3002, second reciprocating screw rod; 3003, second connecting frame; 3004, second guide plate; 31, guide groove; 32, guide block; 33, insertion slot; 34, insertion pin. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be further described in detail below in combination with preferred embodiments and the drawings thereof. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0019] Please refer to Figures 1-7The application provides a technical scheme: a precise slitting equipment for super-narrow and super-thin paper, which comprises a machine body 1, two groups of supporting plates 2 fixedly connected to the top of the machine body 1, a unwinding assembly 3 arranged between the two groups of supporting plates 2, the unwinding assembly 3 being composed of a first motor 301 fixedly installed on one group of first outer sides, a first rotating shaft 302 connected to the output end of the first motor 301 and a unwinding roller 303 connected to one side of the first rotating shaft 302, and a second rotating shaft 4 connected to the inside of each of the two groups of supporting plates 2 through bearings, a first belt pulley 5 sleeved on the outside of one group of the second rotating shafts 4, a second belt pulley 6 fixedly connected to the outside of the first rotating shaft 302, a first belt body 7 sleeved between the first belt pulley 5 and the second belt pulley 6, and a cutter roller 8 arranged between the two groups of second rotating shafts 4. The first motor 301 is driven, and the output end of the first motor 301 can drive the first rotating shaft 302 and the unwinding roller 303 to rotate synchronously, so that the paper unwinding is realized. The first rotating shaft 302 drives the second belt pulley 6 to rotate, the second belt pulley 6 can drive the first belt body 7 and the first belt pulley 5 to rotate synchronously, so that the first belt pulley 5 drives the cutter roller 8 to rotate, thereby realizing the slitting of the paper. The second rotating shaft 4 is fixedly connected with a connecting block 9, a clamping groove 10 is formed in the side of the connecting block 9 close to the cutter roller 8, sliding sleeves 11 are slidably connected to the outside of the cutter roller 8, a limiting groove 12 is formed in the outside of the cutter roller 8, a limiting rod 13 is fixedly connected to the inside of the limiting groove 12, a limiting block 14 fixedly connected to the inner wall of the sliding sleeve 11 is slidably connected to the outside of the limiting rod 13, a supporting spring 15 sleeved on the outer surface of the limiting rod 13 is fixedly connected between the limiting groove 12 and the limiting block 14, a clamping block 16 slidably connected with the clamping groove 10 is fixedly connected to the side of the sliding sleeve 11 close to the connecting block 9, a threaded groove 17 is formed in the side of the clamping block 16, and a fastening bolt 18 is threadedly connected with the threaded groove 17 in the inside of the connecting block 9. When the cutter roller 8 needs to be replaced, the fastening bolt 18 is loosened, the clamping block 16 is separated from the clamping groove 10, the sliding sleeve 11 is pulled, the limiting block 14 moves along the limiting rod 13 and extrudes the supporting spring 15, and the clamping block 16 of the sliding sleeve 11 is separated from the clamping groove 10 of the connecting block 9, so that the cutter roller 8 can be quickly disassembled. When the cutter roller 8 needs to be quickly installed, the cutter roller 8 is aligned with the second rotating shaft 4 by pulling the sliding sleeve 11 again, the clamping block 16 of the sliding sleeve 11 is slidably connected with the clamping groove 10 of the connecting block 9, preliminary positioning is formed, the fastening bolt 18 is connected with the threaded groove 17 of the clamping block 16, and the cutter roller 8 can be quickly installed. A rack 19 is arranged on one side of the support plate 2 above the machine body 1, and a detection assembly 20 is arranged above the rack 19. The detection assembly 20 is composed of a transverse sliding rail 2001, a first sliding block 2002, a longitudinal sliding rail 2003, a second sliding block 2004, a laser sensor 2005, and an intelligent correction module 2006. The first sliding block 2002 is in sliding connection with the transverse sliding rail 2001. The longitudinal sliding rail 2003 is fixedly arranged on the side of the first sliding block 2002 close to the support plate 2. The second sliding block 2004 is in sliding connection with the side of the longitudinal sliding rail 2003 close to the support plate 2. The laser sensor 2005 is fixedly installed on one side of the second sliding block 2004. The intelligent correction module 2006 is arranged on one side of the second sliding block 2004. The laser sensor 2005 is installed on one side of the second sliding block 2004 and can move up and down along the longitudinal sliding rail 2003 and move left and right along the horizontal direction of the first sliding block 2002 along the transverse sliding rail 2001, so as to realize full-area scanning of the width, position, and slitting state of the paper. The laser sensor 2005 detects the size deviation of the paper after slitting in real time, transmits data to the intelligent correction module 2006, analyzes the deviation through an algorithm, judges whether it is a blade problem, and feeds back to the control system to make the first motor 301 stop starting. The bottom of the machine body 1 is fixedly connected with a support rod 21. The bottom of the support rod 21 is fixedly connected with a mounting plate 22. The bottom of the mounting plate 22 is fixedly connected with a support leg 23. The bottom of the mounting plate 22 is fixedly connected with a mounting frame 24. The mounting frame 24 is slidably connected with a discharging frame 25 inside. The discharging frame 25 is fixedly installed with a driving motor 26 on one side. The output end of the driving motor 26 is connected with a third rotating shaft 27. The third rotating shaft 27 is connected with a winding roller 28 through a flange on one side. The driving motor 26 is started. The output end of the driving motor 26 can drive the third rotating shaft 27 and the winding roller 28 to rotate, so as to wind the cut paper. A first tension assembly 29 is arranged between the mounting frame 24 and the mounting plate 22, the first tension assembly 29 comprising a second motor 2901 mounted on one side of one of the support rods 21, the output end of the second motor 2901 driving a rotating shaft connected with a third belt pulley 2902, the third belt pulley 2902 being externally sleeved with a second belt body 2903, the other end of the second belt body 2903 being connected with a fourth belt pulley 2904, one end of the fourth belt pulley 2904 being connected with a first bevel gear set 2905, one side of the first bevel gear set 2905 being fixedly connected with a first reciprocating lead screw 2906, the first reciprocating lead screw 2906 being externally sleeved with a first connecting frame 2907, the inside of the first connecting frame 2907 being slidably connected with a first guide plate 2908, the first guide plate 2908 being threadedly connected with the first reciprocating lead screw 2906, a second tension assembly 30 being arranged below the first tension assembly 29 between the mounting frame 24 and the mounting plate 22, the inside of the fourth belt pulley 2904 being fixedly connected with a second bevel gear set 3001, one side of the second bevel gear set 3001 being fixedly connected with a second reciprocating lead screw 3002, the second reciprocating lead screw 3002 being externally sleeved with a second connecting frame 3003, the inside of the second connecting frame 3003 being slidably connected with a second guide plate 3004, the second guide plate 3004 being threadedly connected with the second reciprocating lead screw 3002; The second motor 2901 is started, the output end of the second motor 2901 driving the third belt pulley 2902 to rotate, the third belt pulley 2902 driving the second belt body 2903 and the fourth belt pulley 2904 to synchronously rotate, the fourth belt pulley 2904 being able to drive the first bevel gear set 2905 and the first reciprocating lead screw 2906 to rotate, the first guide plate 2908 threadedly connected with the first reciprocating lead screw 2906 being able to slide along the first connecting frame 2907, the fourth belt pulley 2904 being able to drive the second reciprocating lead screw 3002 to rotate, the second guide plate 3004 threadedly connected with the second reciprocating lead screw 3002 being able to move along the second connecting frame 3003, and the first guide plate 2908 and the second guide plate 3004 being alternately extended or contracted, when the first guide plate 2908 is contracted, the second guide plate 3004 is extended, when the second guide plate 3004 is contracted, the first guide plate 2908 is extended, ensuring that the tension of the ultra-narrow and ultra-thin paper is uniform and stable during the winding process, and the speed of the second motor 2901 can be adjusted through the intelligent error correction module 2006 to determine whether the paper slitting is deviated due to tension adjustment, so as to avoid the paper being broken due to excessive tension or being wrinkled due to insufficient tension; A guide groove 31 is formed in the bottom end of the inside of the mounting frame 24, a guide block 32 being slidably connected in the inside of the guide groove 31, the guide block 32 being fixedly connected with the bottom of the feeding frame 25, a slot 33 being formed in one side of the guide block 32, a bolt 34 being arranged in the inside of the mounting frame 24 and being slidably connected with the slot 33; When the paper slitting is finished, the winding roller 28 winds the slit paper, the plug 34 is pulled out to separate the plug 34 from the slot 33, and the feeding frame 25 is pulled to make the feeding frame 25 drive the guide block 32 to move along the guide slot 31, so that the feeding frame 25 is separated from the mounting frame 24, thereby ensuring quick replacement of the winding roller 28; Working principle: start the first motor 301, the output end of which drives the first rotating shaft 302 and the unwinding roller 303 to rotate synchronously, realizing paper unwinding; the second pulley 6 on the first rotating shaft 302 drives the first pulley 5 and the cutter roller 8 to rotate through the first belt body 7, and the laser sensor 2005 installed on the second sliding block 2004 can move up and down along the longitudinal slide rail 2003 and move left and right along the horizontal slide rail 2001 with the first sliding block 2002, and can scan the whole area of the paper width, position and slitting condition; when the size deviation after slitting is detected, the laser sensor 2005 transmits data to the intelligent error correction module 2006, which analyzes the data by algorithm; if it is judged that the blade is the problem, it is fed back to the control system to make the first motor 301 stop running; if the deviation is caused by the blade, the fastening bolt 18 is separated from the threaded groove 17, the sleeve 11 is pulled to press the supporting spring 15, the clamping block 16 is separated from the clamping groove 10, a new cutter roller 8 is replaced, the sleeve 11 is loosened after the cutter roller 8 is aligned, the clamping block 16 is slid into the clamping groove 10, and the fastening bolt 18 is tightened and fixed; at the same time, the driving motor 26 is started, the output end of which drives the third rotating shaft 27 and the winding roller 28 to rotate, and the second motor 2901 is started, the output end of which drives the third pulley 2902, the second belt body 2903 and the fourth pulley 2904 to rotate synchronously, thereby driving the first bevel gear set 2905, the second bevel gear set 3001 and the corresponding first reciprocating lead screw 2906, the second reciprocating lead screw 3002 to rotate, the first guide plate 2908 and the second guide plate 3004 connected with the lead screw threads slide along the first connecting frame 2907 and the second connecting frame 3003 respectively, and the two are alternately extended or contracted, ensuring that the tension of the paper during winding is uniform and stable; the intelligent error correction module 2006 can judge the paper slitting deviation caused by tension adjustment and adjust the speed of the second motor 2901 to correct it; after the paper slitting is finished, the winding roller 28 completes winding, the plug 34 is pulled out to separate it from the slot 33 of the guide block 32, the feeding frame 25 is pulled to make the bottom guide block 32 slide along the guide slot 31, the feeding frame 25 is separated from the mounting frame 24, and the winding roller 28 is quickly replaced.

[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0021] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A precision slitting apparatus for ultra-narrow and ultra-thin paper sheets, characterized by, include: The machine body (1) has two sets of support plates (2) fixedly connected to its top, and an unwinding assembly (3) is provided between the two sets of support plates (2). The unwinding assembly (3) includes: The first motor (301) is fixedly installed on the outside of one of the support plates (2). The output end of the first motor (301) is connected to the first rotating shaft (302). One side of the first rotating shaft (302) is connected to the unwinding roller (303). The interior of both sets of support plates (2) is connected to the second rotating shaft (4) through bearings. A cutter roller (8) is provided between the two sets of second rotating shafts (4). A connecting block (9) is fixedly connected to the outside of the second rotating shaft (4). A slot (10) is provided on the side of the connecting block (9) near the cutter roller (8). Sliding sleeves (11) are slidably connected to the outside of both sides of the cutter roller (8). A limiting groove (12) is provided on the outside of the cutter roller (8). A limiting rod (13) is fixedly connected inside the limiting groove (12). A sliding sleeve (11) is slidably connected to the outside of the limiting rod (13). A limiting block (14) is fixedly connected to the inner wall of the sleeve (11). A support spring (15) sleeved on the outer surface of the limiting rod (13) is fixedly connected between the limiting groove (12) and the limiting block (14). A locking block (16) that is slidably connected to the locking groove (10) is fixedly connected to the side of the sliding sleeve (11) near the connecting block (9). A threaded groove (17) is opened on one side of the locking block (16). A fastening bolt (18) that is threadedly connected to the threaded groove (17) passes through the interior of the connecting block (9).

2. A precision slitting apparatus for ultra-narrow and ultra-thin paper sheets as claimed in claim 1, wherein: A first pulley (5) is sleeved on the outside of a set of second rotating shafts (4), and a second pulley (6) is fixedly connected to the outside of the first rotating shaft (302). A first belt body (7) is sleeved between the first pulley (5) and the second pulley (6).

3. The precision slitting apparatus for super-narrow and super-thin paper sheets according to claim 1, characterized in that: A frame (19) is provided above the body (1) on one side of the support plate (2), and a detection component (20) is provided above the frame (19). The detection component (20) includes: A transverse slide rail (2001) is provided on one side of the frame (19). A first sliding block (2002) is slidably connected inside the transverse slide rail (2001). A longitudinal slide rail (2003) is provided on one side of the first sliding block (2002). A second sliding block (2004) is slidably connected inside the longitudinal slide rail (2003). A laser sensor (2005) is fixedly installed on one side of the second sliding block (2004). An intelligent error correction module (2006) is fixedly installed on the other side of the second sliding block (2004).

4. The precision slitting apparatus for super-narrow and super-thin paper sheets according to claim 3, characterized in that: The bottom of the body (1) is fixedly connected to a support rod (21), the bottom of the support rod (21) is fixedly connected to a mounting plate (22), the bottom of the mounting plate (22) is fixedly connected to a support leg (23), and the bottom of the mounting plate (22) is fixedly connected to a mounting frame (24).

5. A precision slitting apparatus for ultra-narrow and ultra-thin paper sheets as claimed in claim 4, wherein: The inside of the mounting frame (24) is slidably connected with a discharging frame (25), one side of the discharging frame (25) is fixedly connected with a driving motor (26), the output end of the driving motor (26) is connected with a third rotating shaft (27), one side of the third rotating shaft (27) is connected with a winding roller (28) through a flange.

6. A precision slitting apparatus for ultra-narrow and ultra-thin paper sheets as claimed in claim 5, wherein: The first tension assembly (29) is arranged between the mounting frame (24) and the mounting plate (22), the first tension assembly (29) comprises a second motor (2901) arranged on one side of one of the support rods (21), the output end of the second motor (2901) is connected with a third pulley (2902) through a rotating shaft, the outside of the third pulley (2902) is sleeved with a second belt body (2903), the other end of the second belt body (2903) is connected with a fourth pulley (2904).

7. A precision slitting apparatus for ultra-narrow and ultra-thin paper sheets as claimed in claim 6, wherein: One end of the fourth pulley (2904) is connected with a first bevel gear set (2905), one side of the first bevel gear set (2905) is fixedly connected with a first reciprocating lead screw (2906), the outside of the first reciprocating lead screw (2906) is sleeved with a first connecting frame (2907), the inside of the first connecting frame (2907) is slidably connected with a first guide plate (2908), the first guide plate (2908) is threadedly connected with the first reciprocating lead screw (2906).

8. A precision slitting apparatus for ultra-narrow and ultra-thin paper sheets according to claim 7, characterized in that: The second tension assembly (30) is arranged below the first tension assembly (29) between the mounting frame (24) and the mounting plate (22), the inside of the fourth pulley (2904) is fixedly connected with a second bevel gear set (3001), one side of the second bevel gear set (3001) is fixedly connected with a second reciprocating lead screw (3002).

9. A precision slitting apparatus for ultra-narrow and ultra-thin paper sheets according to claim 8, characterized in that: The outside of the second reciprocating lead screw (3002) is sleeved with a second connecting frame (3003), the inside of the second connecting frame (3003) is slidably connected with a second guide plate (3004), the second guide plate (3004) is threadedly connected with the second reciprocating lead screw (3002).

10. The apparatus according to claim 9, wherein: The bottom end of the inside of the mounting frame (24) is provided with a guide groove (31), the inside of the guide groove (31) is slidably connected with a guide block (32), the guide block (32) is fixedly connected with the bottom of the discharging frame (25), one side of the guide block (32) is provided with a slot (33), the inside of the mounting frame (24) is penetrated through a bolt (34) which is slidably connected with the slot (33).