Automatic paper splitting machine capable of automatically adapting to size

Abstract

The invention belongs to the technical field of paper processing, and discloses a size-adaptive automatic paper splitting machine which comprises a splitting machine body, a splitting module and a cutter groove module. The slitting module and the cutter groove module are both arranged on the slitting machine body, and the cutter groove module is located below the slitting module. The slitting module comprises a first rotating cylinder, the first rotating cylinder is rotationally installed in the slitting machine body and can be driven by a motor, a set of first movable sleeves arranged at equal intervals are slidably arranged in the first rotating cylinder in a sleeved mode, and the two sides of the first movable sleeves are connected with circular cutter heads arranged outside the first rotating cylinder in a sleeving mode. Due to the design of the two-way shear fork mechanism, it can be guaranteed that the distance between the circular cutter heads after movement and adjustment is kept consistent in the contraction or extension process of the two-way shear fork mechanism, and therefore the phenomenon that the distance error is large after the circular cutter heads are adjusted can be avoided, meanwhile, the automation degree of the splitting machine is improved, and the splitting efficiency is improved. And therefore, the working efficiency in the moving and adjusting process of the circular cutter head is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of paper processing, and specifically relates to an automatic paper cutting machine with self-adaptive size. Background Technique

[0002] An automatic paper cutting machine is a paper cutting device required during the processing and production of paper. The paper is conveyed through the conveying rollers on the paper cutting machine. When it passes through the cutting module, it can be equally spaced cut by the circular knives on the cutting module according to the processing size, achieving the effect of paper cutting. The circular knife discs on the existing paper cutting machines are basically fixed by means of screw fastening. When different sizes of paper raw materials need to be cut into different sizes of paper, it is necessary to manually loosen the fasteners of the circular knife discs on the paper cutting machine in advance, and then move and adjust the distance between them to keep it equally spaced. However, this adjustment method not only has low work efficiency, but also is extremely prone to large dimensional errors in the distance between the circular knife discs during adjustment, resulting in inconsistent sizes of the cut paper. Moreover, when adjusting the distance between the circular knife discs, it is also necessary to adjust the position of the knife groove. If the installation position of the knife groove deviates and the groove wall abuts against the circular knife body, it will cause significant friction during subsequent operation, generate sparks and ignite the cut paper, leading to accidents.

[0003] Therefore, an automatic paper cutting machine with self-adaptive size is proposed to solve the above problems. Summary of the Invention

[0004] To solve the problems raised in the above background technique, the present invention provides an automatic paper cutting machine with self-adaptive size.

[0005] To achieve the above object, the present invention provides the following technical solution: An automatic paper cutting machine with self-adaptive size, comprising a cutting machine body, a cutting module, and a knife groove module; Both the cutting module and the knife groove module are arranged on the cutting machine body, and the knife groove module is located below the cutting module; The cutting module includes a first rotating cylinder, the first rotating cylinder is rotatably installed in the cutting machine body and can be driven by a motor. A group of equally spaced movable sleeves are slidably sleeved in the first rotating cylinder. Circular knife discs sleeved outside the first rotating cylinder are connected to both sides of the movable sleeve. A rotatable second movable sleeve is movably sleeved in the first movable sleeve. A connecting block is installed in the second movable sleeve. A group of first limiting rods located in the first rotating cylinder are connected to the cutting machine body. Two movable blocks are respectively slidably sleeved on both sides of the outside of the first limiting rod. Two-way scissor mechanisms are respectively hinged on both sides between the two movable blocks. A circular shaft sleeved in the connecting block is provided at the hinge of the two-way scissor mechanism.

[0006] Preferably, a double-threaded lead screw driven by a motor is movably sleeved in the connecting block, and the double-threaded lead screw passes through the connecting block and is threadedly sleeved in the movable block.

[0007] Preferably, the cutter groove module includes a second rotating cylinder, the second rotating cylinder is movably installed in the slitter body and can be driven by a motor, a group of supporting wheels with the same number as the circular cutter discs are slidably sleeved outside the second rotating cylinder, cutter grooves are provided on the supporting wheels and the circular cutter discs are located in the cutter grooves, movable rings are sleeved on both sides in the cutter grooves of the supporting wheels, a group of connecting rods arranged in a surrounding manner are connected to the outer sides of the movable rings, and the other ends of the connecting rods extend into the supporting wheels and are connected with a third movable sleeve.

[0008] Preferably, movable arms II are hinged above and below the inner circle of the third movable sleeve, the other ends of the movable arms II are hinged with hollow squares that can pass through the supporting wheels and extend into the second rotating cylinder, the hollow squares can slide and lift in the second rotating cylinder, arc-shaped pressing blocks that can abut against the inner wall of the second rotating cylinder are connected to the inner sides of the hollow squares, and the surfaces of the inner wall of the second rotating cylinder and the arc-shaped pressing blocks are both rough surfaces.

[0009] Preferably, an elastic member is connected to the outer side of the third movable sleeve, and the other end of the elastic member is connected to the inner wall of the supporting wheel.

[0010] Preferably, a square sleeve is connected to one side inside the second rotating cylinder, a square rod is movably sleeved inside the square sleeve, an electric cylinder is installed on the slitter body, and the output end of the electric cylinder extends into the second rotating cylinder and is rotatably sleeved inside the square rod.

[0011] Preferably, two groups of limiting rods II are respectively arranged on both sides inside the second rotating cylinder, pressing plates that can abut against the arc-shaped pressing blocks are sleeved above and below the limiting rods II, and the outer sides of the pressing plates are rough surfaces.

[0012] Preferably, two groups of movable arms I are respectively hinged above and below the square rod, and the other ends of the movable arms I are hinged with the pressing plates.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, by providing a double - acting scissor mechanism, a movable block and a connecting block, the control end drives the motor to drive the double - threaded lead screw to rotate. Due to the rotation of the double - threaded lead screw, the movable block can move inwards or outwards. Due to the movement of the two double - threaded lead screws, the double - acting scissor mechanism can be driven to contract inwards or extend outwards. Due to the operation of the double - acting scissor mechanism, the movable sleeve two, the movable sleeve one and the circular cutter disk can be driven to move together through the round shaft, and the distance between the circular cutter disks can be automatically adjusted according to the size of the paper, while realizing the self - adaptive adjustment of the paper cutting size. Due to the design of the double - acting scissor mechanism, during the contraction or extension of the double - acting scissor mechanism, the distance after the movement and adjustment of the circular cutter disk can be ensured to be consistent, thereby avoiding the phenomenon of large distance error after the adjustment of the circular cutter disk, improving the automation degree of the cutting machine, and further enhancing the working efficiency during the movement and adjustment of the circular cutter disk.

[0014] In the present invention, by providing a movable ring and an elastic member, before the circular cutter disk moves and adjusts, the movable sleeve one contracts, driving the square rod to move to the right along the square sleeve, driving the pressing plate to move inwards through the movable arm one, releasing the abutment between the pressing plate and the arc - shaped pressing block. At this time, the elastic force of the elastic member can drive the movable sleeve three, the connecting rod and the movable ring to move inwards and clamp on the circular cutter disk. At the same time, the movable sleeve three drives the hollow square block and the arc - shaped pressing block to move towards the inside of the rotating cylinder two through the movable arm two, releasing the fastening effect between the supporting wheel and the rotating cylinder two. When the circular cutter disk moves and adjusts, the movable ring is used to push the supporting wheel to move horizontally on the rotating cylinder two, so that when the circular cutter disk is adjusted, the supporting wheel can also be adjusted in position, ensuring that the circular cutter disk is always located in the cutter groove on the supporting wheel. At the same time, the clamping design of the two movable rings moving inwards can ensure that the supporting wheel can also remain in the center of the cutter groove after the movement and adjustment.

[0015] In the present invention, by providing a movable ring, a pressing plate and a movable arm one, when the movable block completes the position adjustment, the output end of the electric cylinder extends again, driving the square rod to contract into the square sleeve, and driving the pressing plate to move outwards and reset through the movable arm one. At the same time, the pressing plate abuts and pushes the arc - shaped pressing block and the hollow square block to move outwards, driving the movable sleeve three, the connecting rod and the movable ring to move outwards and reset through the movable arm two, so that the elastic member is compressed again, and finally the arc - shaped pressing block tightly abuts against the inner wall of the rotating cylinder two, realizing the fixation after the position adjustment of the supporting wheel. In the prior art, the groove wall of the cutter groove is of a fixed design and there is a gap between the circular cutter disk and the cutter groove to avoid interference fit, and it is easy to have the phenomenon that the groove wall of the cutter groove abuts against the circular cutter disk after movement. This design adopts a movable inner wall. After the position adjustment is completed, the movable ring will disengage from the circular cutter disk, thus avoiding the phenomenon that the groove wall of the cutter groove abuts against the circular cutter disk, and further avoiding the friction and ignition between the circular cutter disk and the groove wall during operation, ensuring the safety of the cutting machine body during operation. Description of the Drawings

[0016] Figure 1 Structural schematic diagram of the present invention; Figure 2 Structural schematic diagram of the cross-section of the present invention; Figure 3 is Figure 2 Partial enlarged structural schematic diagram at position A in; Figure 4 Structural schematic diagram of the first rotating cylinder of the present invention; Figure 5 Cross-sectional structural schematic diagram of the first rotating cylinder of the present invention; Figure 6 Cross-sectional structural schematic diagram of the second rotating cylinder of the present invention; Figure 7 is Figure 6 Partial enlarged structural schematic diagram at position B in; Figure 8 is Figure 6 Partial enlarged structural schematic diagram at position C in; Figure 9 is Figure 6 Partial enlarged structural schematic diagram at position D in; Figure 10 Structural schematic diagram of the double scissor mechanism of the present invention; Figure 11 is Figure 10 Partial enlarged structural schematic diagram at position E in; Figure 12 is Figure 10 Partial enlarged structural schematic diagram at position F in.

[0017] In the figure: 1. Slitter body; 2. Slitting module; 21. First rotating cylinder; 22. First movable sleeve; 23. Circular cutter disc; 24. Second movable sleeve; 25. Connecting block; 26. Double-threaded lead screw; 27. First limiting rod; 28. Movable block; 29. Double scissor mechanism; 210. Circular shaft; 3. Knife groove module; 31. Second rotating cylinder; 32. Electric cylinder; 33. Square rod; 34. Square sleeve; 35. First movable arm; 36. Pressing plate; 37. Second limiting rod; 38. Support wheel; 39. Movable ring; 310. Connecting rod; 311. Third movable sleeve; 312. Elastic member; 313. Second movable arm; 314. Hollow square block; 315. Arc-shaped pressing block. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] AsFigures 1 to 12 As shown in the figure, the present invention provides an automatic paper cutting machine with an adaptive size, which includes a cutting machine body 1, a cutting module 2, and a knife groove module 3; Both the cutting module 2 and the knife groove module 3 are arranged on the cutting machine body 1, and the knife groove module 3 is located below the cutting module 2; The cutting module 2 includes a first rotating cylinder 21, which is rotatably installed in the cutting machine body 1 and can be driven by a motor. A set of equally spaced movable sleeves 22 are slidably sleeved in the first rotating cylinder 21. Two sides of the movable sleeve 22 are connected with circular knife discs 23 sleeved outside the first rotating cylinder 21. A rotatable movable sleeve 24 is movably sleeved in the movable sleeve 22. A connecting block 25 is installed in the movable sleeve 24. A set of first limiting rods 27 located in the first rotating cylinder 21 are connected to the cutting machine body 1. Two movable blocks 28 are respectively slidably sleeved on both sides of the outside of the first limiting rods 27. A double-sided scissor mechanism 29 is hinged on both sides between the two movable blocks 28. A circular shaft 210 sleeved in the connecting block 25 is arranged at the hinge of the double-sided scissor mechanism 29.

[0020] Adopting the above scheme: When the movable blocks 28 move inwards or outwards, due to the movement of the two double-threaded lead screws 26, the double-sided scissor mechanism 29 can be driven to contract inwards or extend outwards. Due to the operation of the double-sided scissor mechanism 29, the movable sleeve 24, the movable sleeve 22, and the circular knife discs 23 can be driven to move together through the circular shaft 210, and the distance between the circular knife discs 23 can be automatically adjusted according to the size of the paper, so as to realize the adaptive adjustment of the paper cutting size.

[0021] As Figure 3 、 Figure 5 、 Figure 6 and Figure 7 shown, a double-threaded lead screw 26 that can be driven by a motor is movably sleeved in the connecting block 25. The double-threaded lead screw 26 passes through the connecting block 25 and is threadedly sleeved in the movable block 28.

[0022] Adopting the above scheme: The operator inputs the size data of the paper into the control terminal on the cutting machine body 1. The control terminal drives the motor to drive the double-threaded lead screw 26 to rotate. Due to the rotation of the double-threaded lead screw 26, the movable blocks 28 can move inwards or outwards under the action of the threads on the double-threaded lead screw 26 and the limiting effect of the first limiting rods 27.

[0023] As Figure 3 、 Figure 6 and Figure 9As shown in the figure, the knife groove module 3 includes a second rotating cylinder 31. The second rotating cylinder 31 is movably installed in the slitter body 1 and can be driven by a motor. A set of support wheels 38 with the same number as the circular knife disks 23 are slidably sleeved outside the second rotating cylinder 31. Knife grooves are provided on the support wheels 38 and the circular knife disks 23 are located in the knife grooves. Movable rings 39 are sleeved on both sides inside the knife grooves of the support wheels 38. A set of connecting rods 310 arranged in a surrounding manner are connected to the outer sides of the movable rings 39. The other ends of the connecting rods 310 extend into the support wheels 38 and are connected to a third movable sleeve 311.

[0024] With the above solution: when the movable rings 39 move inward and clamp on the circular knife disks 23, the clamping design of the two movable rings 39 moving inward can ensure that the support wheels 38 can also remain in the center of the knife grooves after moving and adjusting.

[0025] As Figure 3 、 Figure 6 and Figure 9 shown in the figure, movable arms 313 are hinged to both the upper and lower sides of the inner circle of the third movable sleeve 311. The other ends of the movable arms 313 are hinged to a hollow square block 314 that can pass through the support wheel 38 and extend into the second rotating cylinder 31. The hollow square block 314 can slide and lift in the second rotating cylinder 31. An arc-shaped pressing block 315 that can abut against the inner wall of the second rotating cylinder 31 is connected to the inner side of the hollow square block 314. The surfaces of the inner wall of the second rotating cylinder 31 and the arc-shaped pressing block 315 are both rough surfaces.

[0026] With the above solution: when the third movable sleeve 311 drives the hollow square block 314 and the arc-shaped pressing block 315 to move inward towards the inside of the second rotating cylinder 31 through the movable arms 313, the fastening effect between the support wheel 38 and the second rotating cylinder 31 can be released. Thus, when the circular knife disk 23 moves and adjusts, the support wheel 38 can be pushed to move horizontally on the second rotating cylinder 31 through the movable ring 39, realizing that when the circular knife disk 23 is adjusted, the support wheel 38 can also be adjusted in position together.

[0027] As Figure 3 、 Figure 6 and Figure 9 shown in the figure, an elastic member 312 is connected to the outer side of the third movable sleeve 311. The other end of the elastic member 312 is connected to the inner wall of the support wheel 38.

[0028] With the above solution: when the first movable arm 35 loses abutment, at this time, the elastic force of the elastic member 312 can drive the third movable sleeve 311, the connecting rods 310 and the movable rings 39 to move inward and clamp on the circular knife disks 23.

[0029] As Figure 3 、 Figure 6 and Figure 8As shown in the figure, a square sleeve 34 is connected to one side inside the second rotating cylinder 31. A square rod 33 is movably sleeved inside the square sleeve 34. An electric cylinder 32 is installed on the slitter body 1, and the output end of the electric cylinder 32 extends into the second rotating cylinder 31 and is rotatably sleeved inside the square rod 33.

[0030] With the above solution: when the second rotating cylinder 31 rotates, it will drive the supporting wheel 38, the square sleeve 34 and the square rod 33 to rotate together, so that the square rod 33 can rotate along the output end of the electric cylinder 32. This design can ensure the rotation performance of the square rod 33 and the connectivity of the output end of the electric cylinder 32.

[0031] As Figure 3 、 Figure 6 、 Figure 8 and Figure 9 shown in the figure, two groups of second limiting rods 37 are respectively arranged on both sides inside the second rotating cylinder 31. Pressing plates 36 that can abut against the arc-shaped pressing blocks 315 are sleeved above and below the second limiting rods 37, and the outer sides of the pressing plates 36 are rough surfaces.

[0032] With the above solution: when the pressing plate 36 moves outward and resets, the pressing plate 36 will abut against and push the arc-shaped pressing block 315 and the hollow square block 314 to move outward, and finally make the arc-shaped pressing block 315 tightly abut against the inner wall of the second rotating cylinder 31, so as to realize the fixation after the position adjustment of the supporting wheel 38.

[0033] As Figure 3 、 Figure 6 、 Figure 8 and Figure 9 shown in the figure, two groups of first movable arms 35 are respectively hinged above and below the square rod 33, and the other ends of the first movable arms 35 are hinged to the pressing plate 36.

[0034] With the above solution: when the position adjustment of the movable block 28 is completed, the output end of the electric cylinder 32 extends out again, which can drive the square rod 33 to contract into the square sleeve 34, so that the pressing plate 36 can be driven by the first movable arm 35 to move outward along the second limiting rod 37.

[0035] The working principle and usage process of the present invention: During use, the paper raw material is conveyed through the conveying rollers inside the slitter body 1, and the motor drives the first rotating cylinder 21 and the second rotating cylinder 31 to rotate, so that the first rotating cylinder 21 drives the first movable sleeve 22 to rotate inside the second movable sleeve 24. Due to the rotation of the first movable sleeve 22, the circular cutter disc 23 can be driven to rotate together and cut the paper. The rotation of the second rotating cylinder 31 will drive the supporting wheel 38, the square sleeve 34 and the square rod 33 to rotate together, so that the square rod 33 can rotate along the output end of the electric cylinder 32.

[0036] When it is necessary to slit paper of different sizes, the operator inputs the size data of the paper into the control terminal on the slitter body 1. The control terminal drives the motor to drive the double-threaded lead screw 26 to rotate. Due to the rotation of the double-threaded lead screw 26, the movable block 28 can move inward or outward along the threads on the double-threaded lead screw 26 and under the limiting action of the limiting rod 27. Due to the movement of the two double-threaded lead screws 26, the double-sided scissor mechanism 29 can be driven to contract inward or extend outward. Due to the operation of the double-sided scissor mechanism 29, the movable sleeve 24, the movable sleeve 22, and the circular cutter disc 23 can be driven to move together through the circular shaft 210, and the distance between the circular cutter discs 23 can be automatically adjusted according to the size of the paper, and at the same time, the size of the paper slit can be adjusted adaptively.

[0037] Before the circular cutter disc 23 moves and adjusts, the control terminal will control the contraction of the movable sleeve 22, driving the square rod 33 to move to the right along the square sleeve 34. Due to the movement of the square rod 33, the pressing plate 36 can be driven to move inward along the limiting rod 27 through the movable arm 35, releasing the abutment between the pressing plate 36 and the arc-shaped pressing block 315. At this time, the elastic member 312 in the compressed state, under the action of the restoration of the elastic force, can drive the movable sleeve 311, the connecting rod 310, and the movable ring 39 to move inward and clamp on the circular cutter disc 23. At the same time, the movable sleeve 311 will drive the hollow square block 314 and the arc-shaped pressing block 315 to move inward into the inner side of the rotating cylinder 31 through the movable arm 313, releasing the fastening effect between the supporting wheel 38 and the rotating cylinder 31. When the circular cutter disc 23 moves and adjusts, the supporting wheel 38 will be pushed by the movable ring 39 to move horizontally on the rotating cylinder 31, so that when the circular cutter disc 23 is adjusted, the supporting wheel 38 can be adjusted in position together.

[0038] When the position adjustment of the movable block 28 is completed, the output end of the electric cylinder 32 extends again, driving the square rod 33 to contract into the square sleeve 34, and driving the pressing plate 36 to move outward and reset through the movable arm 35. At the same time, the pressing plate 36 abuts and pushes the arc-shaped pressing block 315 and the hollow square block 314 to move outward, driving the movable sleeve 311, the connecting rod 310, and the movable ring 39 to move outward and reset through the movable arm 313, so that the elastic member 312 is compressed again, and finally the arc-shaped pressing block 315 tightly abuts against the inner wall of the rotating cylinder 31, realizing the fixation after the position adjustment of the supporting wheel 38, and at the same time avoiding the phenomenon that the groove wall of the cutter groove abuts against the circular cutter disc 23.

[0039] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic paper slitting machine with self-adaptive size, characterized in that: It comprises a slitting machine body (1), a slitting module (2) and a knife slot module (3); The slitting module (2) and the knife slot module (3) are both arranged on the slitting machine body (1), and the knife slot module (3) is located below the slitting module (2); The slitting module (2) comprises a rotating drum (21), the rotating drum (21) being rotatably mounted in a slitting machine body (1) and being driven by a motor, a sliding sleeve in the rotating drum (21) being provided with a group of movable sleeves (22) arranged equidistantly, the two sides of the movable sleeve (22) being connected with circular cutter discs (23) sleeved on the outside of the rotating drum (21), a movable sleeve in the movable sleeve (22) being provided with a rotatable movable sleeve (24), a connecting block (25) being installed in the movable sleeve (24), a group of limit rods (27) located in the rotating drum (21) being connected to the slitting machine body (1), two movable blocks (28) being slidingly sleeved on the two sides of the outside of the limit rods (27), two bidirectional scissor-fork mechanisms (29) being hinged on the two sides between the two movable blocks (28), a circular shaft (210) sleeved in the connecting block (25) being provided at the hinged part of the bidirectional scissor-fork mechanism (29).

2. The automatic paper slitting machine with self-adaptive size according to claim 1, characterized in that: A double-threaded screw rod (26) that can be driven by a motor is movably sleeved in the connecting block (25). The double-threaded screw rod (26) passes through the connecting block (25) and is threadably sleeved in the movable block (28).

3. The self-adaptive size automatic paper slitting machine according to claim 1, characterized in that: The knife groove module (3) comprises a second rotating drum (31), the second rotating drum (31) being movably mounted in the slitting machine body (1) and being driven by a motor, the external sliding sleeve of the second rotating drum (31) being provided with a group of supporting wheels (38) having the same number as the circular knife disc (23), the supporting wheel (38) being provided with knife grooves and the circular knife disc (23) being located in the knife grooves, movable rings (39) being sleeved on both sides of the knife grooves of the supporting wheel (38), the outer side of the movable ring (39) being connected to a group of connecting rods (310) arranged in a surrounding manner, the other end of the connecting rod (310) extending into the supporting wheel (38) and being connected to a movable sleeve (311).

4. The self-adaptive size automatic paper slitting machine according to claim 3, characterized in that: The upper and lower parts of the inner ring of the movable sleeve three (311) are both hinged with movable arms two (313); the other end of the movable arm two (313) is hinged with a hollow block (314) that can pass through the support wheel (38) and extend into the rotating drum two (31); the hollow block (314) can slide and rise and fall in the rotating drum two (31); the inner side of the hollow block (314) is connected with an arc-shaped pressing block (315) that can abut against the inner wall of the rotating drum two (31); the surfaces of the inner wall of the rotating drum two (31) and the arc-shaped pressing block (315) are both rough surfaces.

5. The self-adaptive size automatic paper slitting machine according to claim 3, characterized in that: The outer side of the movable sleeve three (311) is connected to an elastic member (312), and the other end of the elastic member (312) is connected to the inner wall of the supporting wheel (38).

6. The self-adaptive size automatic paper slitting machine according to claim 4, characterized in that: A square sleeve (34) is connected to one side of the interior of the second rotating drum (31), and a square rod (33) is movably sleeved inside the square sleeve (34). An electric cylinder (32) is mounted on the slitting machine body (1), and an output end of the electric cylinder (32) extends into the interior of the second rotating drum (31) and is rotatably sleeved in the square rod (33).

7. The self-adaptive size automatic paper slitting machine according to claim 6, characterized in that: Two sets of second limiting rods (37) are respectively provided on both sides of the interior of the second rotating drum (31), and pressure plates (36) capable of abutting against the arc-shaped pressure block (315) are sleeved on the upper and lower parts of the second limiting rods (37), and the outer side of the pressure plate (36) is a rough surface.

8. The self-adaptive size automatic paper slitting machine according to claim 7, characterized in that: Two sets of movable arms (35) are hingedly connected at the upper and lower parts of the square rod (33), respectively, and the other ends of the movable arms (35) are hingedly connected to the pressure plate (36).

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