A paper cutting device with adjustable cutter position

Abstract

The present invention provides a paper cutting device with an adjustable cutter position, which includes a first unwinding station, a first conveying station, and a first slitting station arranged in sequence along a first direction, and also includes a second unwinding station, a second conveying station, and a second slitting station arranged in sequence along a second direction opposite to the first direction. The first slitting station and the second slitting station are both connected to a common cutting station. A first blanking station is arranged on one side of the cutting station facing the second slitting station, and a second blanking station is arranged on one side of the cutting station facing the first slitting station.

Description

Technical Field

[0001] The present invention relates to the technical field of paper product production, and particularly to a paper cutting device with an adjustable cutter position. Background Art

[0002] A paper cutting device is a common device used in the process of paper product production. Traditional paper cutting devices generally include the following stations, namely, an unwinding station, a conveying station, a slitting station, and a cutting station. The cutting station where the cutter is located is also the last process of performing actions. Adjacent to the cutting station is a blanking station that does not perform actions and is used to collect the cut paper. In order to prevent cutting burrs from occurring in the cutting process, a calibration pressure wheel and a cutting pressure plate must be set in front of the cutter, and then the cutter driven by hydraulic pressure is used for cutting.

[0003] However, all current paper cutting devices operate unidirectionally. For example, they operate along a production line such as an unwinding station, a conveying station, a slitting station, a cutting station, and a blanking station. The disadvantages of this are that if a station fails and needs to be repaired, the entire line will stop, and also that when only the cutting station is used for operation, the automation level is not high and the flexibility of the equipment is poor. It should be noted that in some special usage scenarios, it is possible to only use the cutting station for operation, but the cutter position may need to be adjusted for specific scenarios.

[0004] In view of this, a technical breakthrough of proposing a new two-way paper cutting device with an adjustable cutter position will help to further improve production capacity, including the improvement of potential output and the improvement of function diversity. Summary of the Invention

[0005] The technical problem to be solved by the present invention is how to enable the paper cutting device to operate bidirectionally, and a paper cutting device with an adjustable cutter position is provided.

[0006] The technical solution of the present invention is a paper cutting device with an adjustable cutter position, which includes a first unwinding station, a first conveying station, and a first slitting station arranged in sequence along a first direction, and also includes a second unwinding station, a second conveying station, and a second slitting station arranged in sequence along a second direction opposite to the first direction. The first slitting station and the second slitting station are both connected to a shared cutting station. A first blanking station is provided on one side of the cutting station facing the second slitting station, and a second blanking station is provided on one side of the cutting station facing the first slitting station; A gantry frame is provided at the cutting station. A transverse movement opening pointing to the first direction and the second direction is opened on the frame. A transverse movement arm is arranged in the transverse movement opening. The two ends of the transverse movement arm are respectively connected with a first rotating arm facing the first slitting station and a second rotating arm facing the second slitting station. A first pressing wheel and a second pressing wheel are respectively arranged on the first rotating arm and the second rotating arm. When the transverse movement arm moves horizontally to one side of the pressing wheel in place, the pressing wheel on the other side retracts upward; A suspension rod is provided on the frame and hangs down to the transverse movement arm. The suspension rod is connected with a rotating gear through a bearing. A straight rack for driving the rotating gear is arranged on the transverse movement arm. A lifting plate is arranged inside the frame. A cutter and a pressing plate are arranged below the lifting plate. The cutter includes a first blade and a second blade arranged side by side. The bottoms of the first blade and the second blade are higher than the pressing plate. The first blade and the second blade are slidably connected to the bottom of the lifting plate through a tool holder. A lead screw for driving the tool holder to move horizontally is arranged at the bottom of the lifting plate. Crank shafts are arranged at both ends of the tool holder. One end of the crank shaft is connected to the first blade or the second blade, and the other end extends into a Z-shaped steering groove opened at the bottom of the lifting plate. A driven bevel gear is arranged on the lead screw. An expansion rod extends downward from the rotating gear. The lower end of the expansion rod penetrates through the lifting plate and is connected with a driving bevel gear.

[0007] As an implementation manner, the transverse movement arm includes opposite first arm plate and second arm plate. The first rotating arm and the second rotating arm are rotatably connected between the first arm plate and the second arm plate. The first rotating arm and the second rotating arm are both inclined arms. When the transverse movement arm moves horizontally in place, after the first rotating arm or the second rotating arm contacts the transverse movement opening, it can rotate upward around its rotating connection axis to retract the first pressing wheel or the second pressing wheel upward.

[0008] As an implementation manner, an end plate is arranged on the first rotating arm or the second rotating arm. A wheel seat is elastically connected to the end plate. An electric cylinder for driving the wheel seat to press downward is also arranged on the end plate. The first pressing wheel or the second pressing wheel is arranged on the wheel seat. A pressing wheel motor for driving the first pressing wheel or the second pressing wheel to rotate is also arranged on the wheel seat.

[0009] As an implementation manner, the end plate and the wheel seat are elastically connected by four springs.

[0010] As an implementation manner, a toothed plate is provided on the first arm plate along the opening direction of the transverse movement port, and the straight rack is fixed on the toothed plate.

[0011] As an implementation manner, a bottom plate is further provided in the frame below the first blade, the second blade, and the pressing plate.

[0012] As an implementation manner, two sliding rails are provided at the bottom of the lifting plate. The tool holder is connected to the sliding rails through sliders. The lead screw is fixed through bearing seats provided on both sides of the bottom of the lifting plate. End seats for the crankshaft to rotate and connect are provided at both ends of the tool holder. Tool shafts are provided on both the first blade and the second blade. One end of the crankshaft is connected to the first blade or the second blade through the tool shaft.

[0013] As an implementation manner, the steering groove includes a first straight groove and a second straight groove that are parallel to each other, and also includes an inclined groove connecting the first straight groove and the second straight groove. One end of the crankshaft connecting the tool shaft is always located on the center line between the first straight groove and the second straight groove; wherein, the lead screw drives the tool holder to move transversely to enable the position switching of the other end of the crankshaft in the first straight groove and the second straight groove, and when passing through the inclined groove, the tool shaft is rotated 180 degrees.

[0014] As an implementation manner, the two steering grooves are respectively located on both sides of the lead screw, and the two steering grooves have the same shape.

[0015] As an implementation manner, a gear groove for the driven bevel gear to rotate and make way is further opened at the bottom of the lifting plate.

[0016] The beneficial effects of the present invention compared with the prior art are as follows. This paper cutting device can achieve two-way operation. When switching by moving the transverse moving arm to retract the pressing wheel on one side upward, it determines whether to put into use the line composed of the first unwinding station, the first conveying station, the first slitting station, the cutting station, and the first blanking station or the line composed of the second unwinding station, the second conveying station, the second slitting station, the cutting station, and the second blanking station. When driving the transverse moving arm to move horizontally, when the transverse moving arm moves horizontally relative to the transverse moving port, it is to adjust the positions of the first pressing wheel and the second pressing wheel, so that the pressing wheel to be put into use is lowered and the unused pressing wheel is retracted. Through the horizontal movement of the transverse moving arm, the position of the cutting knife is also adjusted. By adjusting the position of the cutting knife, the cutting knife can be moved from one side of the original pressing plate to the other side of the pressing plate, and a 180-degree flip is synchronously achieved during the movement. Therefore, overall, the above-mentioned switching retains the existing positional relationship of the original pressing wheel, pressing plate, and cutting knife, achieving the purpose of two-way operation. When only using the cutting station for operation, the positions of the first blade and the second blade are adjusted to adapt to the specific situation, improving the flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the paper cutting device with adjustable cutting knife position provided by the embodiment of the present invention;

[0018] Figure 2 First structural diagram of the cutting station provided by the embodiment of the present invention;

[0019] Figure 3 Second structural diagram of the cutting station provided by the embodiment of the present invention;

[0020] Figure 4 Partial enlarged view of the lifting plate and the cutting knife provided by the embodiment of the present invention;

[0021] Figure 5 Partial cross-sectional view of the cutting station provided by the embodiment of the present invention.

[0022] In the figure: 1. First unwinding station; 2. First conveying station; 3. First slitting station; 4. Second unwinding station; 5. Second conveying station; 6. Second slitting station; 7. Cutting station; 8. First blanking station; 9. Second blanking station; 10. Frame; 11. Transverse movement opening; 12. Transverse movement arm; 13. First rotating arm; 14. Second rotating arm; 15. First pressing wheel; 16. Second pressing wheel; 17. Suspension rod; 18. Rotating gear; 19. Straight rack; 20. Lifting plate; 21. Cutting knife; 22. Pressing plate; 23. First blade; 24. Second blade; 25. Tool holder; 26. Lead screw; 27. Crankshaft; 28. Steering groove; 29. Driven bevel gear; 30. Telescopic rod; 31. Driving bevel gear; 32. First arm plate; 33. Second arm plate; 34. End plate; 35. Wheel seat; 36. Electric cylinder; 37. Pressing wheel motor; 38. Spring; 39. Tooth plate; 40. Bottom plate; 41. Slide rail; 42. Slide block; 43. Bearing seat; 44. End seat; 45. Tool shaft; 46. First straight groove; 47. Second straight groove; 48. Inclined groove; 49. Gear groove. Specific embodiments

[0023] The following will clearly and completely describe the above and other embodiments and advantages of the present invention with reference to the accompanying drawings. Obviously, the described embodiments are only partial embodiments of the present invention, rather than all embodiments.

[0024] In one embodiment, as Figures 1-5 shown.

[0025] The paper cutting device with an adjustable cutter position provided by this embodiment includes a first unwinding station 1, a first conveying station 2, and a first slitting station 3 arranged in sequence along a first direction, and also includes a second unwinding station 4, a second conveying station 5, and a second slitting station 6 arranged in sequence along a second direction opposite to the first direction. The first slitting station 3 and the second slitting station 6 are both connected to a shared cutting station 7. A first blanking station 8 is provided on one side of the cutting station 7 facing the second slitting station 6, and a second blanking station 9 is provided on one side of the cutting station 7 facing the first slitting station 3; A gantry frame 10 is provided at the cutting station 7. A transverse movement opening 11 pointing to the first direction and the second direction is formed on the frame 10. A transverse movement arm 12 is arranged in the transverse movement opening 11. The two ends of the transverse movement arm 12 are respectively connected with a first rotating arm 13 facing the first slitting station 3 and a second rotating arm 14 facing the second slitting station 6. A first pressing wheel 15 and a second pressing wheel 16 are respectively arranged on the first rotating arm 13 and the second rotating arm 14. When the transverse movement arm 12 moves horizontally to one side and the pressing wheel is in place, the pressing wheel on the other side retracts upward; A suspension rod 17 is provided on the frame 10 and hangs down to the transverse movement arm 12. The suspension rod 17 is connected with a rotating gear 18 through a bearing. A straight rack 19 for driving the rotating gear 18 is arranged on the transverse movement arm 12. A lifting plate 20 is arranged inside the frame 10. A cutter 21 and a pressing plate 22 are arranged below the lifting plate 20. The cutter 21 includes a first blade 23 and a second blade 24 arranged side by side. The bottoms of the first blade 23 and the second blade 24 are higher than the pressing plate 22. The first blade 23 and the second blade 24 are slidably connected to the bottom of the lifting plate 20 through a tool holder 25. A lead screw 26 for driving the tool holder 25 to move horizontally is arranged at the bottom of the lifting plate 20. Crank shafts 27 are arranged at both ends of the tool holder 25. One end of the crank shaft 27 is connected to the first blade 23 or the second blade 24, and the other end extends into a Z-shaped turning groove 28 formed at the bottom of the lifting plate 20. A driven bevel gear 29 is arranged on the lead screw 26. An expansion rod 30 extends downward from the rotating gear 18. The lower end of the expansion rod 30 penetrates through the lifting plate 20 and is connected with a driving bevel gear 31.

[0026] In this embodiment, the paper cutting device can perform two-way operations. During the switching process by moving the traversing arm 12 horizontally to retract one side of the pressure wheel upward, it is determined whether to put into use the line composed of the first unwinding station 1, the first conveying station 2, the first slitting station 3, the cutting station 7, and the first blanking station 8, or the line composed of the second unwinding station 4, the second conveying station 5, the second slitting station 6, the cutting station 7, and the second blanking station 9. During the switching, it should be particularly noted that due to the requirements of the cutting process, the existing positional relationship among the pressure wheel, the pressure plate 22, and the cutting knife 21 cannot be changed. The pressure wheel, that is, the first pressure wheel 15 or the second pressure wheel 16, is provided for operation when it is lowered and must be arranged in front of the cutting knife. Based on this, in this embodiment, linear drive is achieved through an external hydraulic cylinder or an electric cylinder to drive the traversing arm 12 to traverse. When the traversing arm 12 traverses relative to the traversing port 11, it is to adjust the positions of the first pressure wheel 15 and the second pressure wheel 16, lower the pressure wheel to be put into use, and retract the unused pressure wheel. Specifically, due to the existence of the traversing port 11, when the traversing arm 12 traverses to one side of the pressure wheel in place, the pressure wheel on the other side can be retracted upward under the contact of the rotating arm and the traversing port 11. However, in this embodiment, the position of the cutting knife 21 is also adjusted through the traversing movement of the traversing arm 12. As Figure 2 shown, on one operation line, the cutting knife 21 must be located behind the pressure plate 22, that is, after being tightly pressed and stabilized by the pressure plate 22, the cutting knife 21 performs cutting. By adjusting the position of the cutting knife 21, the cutting knife 21 can be moved from one side of the original pressure plate 22 to the other side of the pressure plate 22, and a 180-degree flip is synchronously achieved during the movement. Therefore, overall, the above switching retains the existing positional relationship among the original pressure wheel, the pressure plate 22, and the cutting knife 21, achieving the purpose of two-way operation. And the specific cooperation relationship is, as Figure 3 shown, through the traversing movement of the traversing arm 12, the straight rack 19 drives the rotating gear 18 to rotate circumferentially. The rotation of the rotating gear 18 causes the telescopic rod 30 fixedly connected to its bottom to rotate. The telescopic rod 30 is fixed on the lifting plate 20 through a bearing. The rotation of the telescopic rod 30 causes the driving bevel gear 31 on it to rotate, and then drives the lead screw 26 to rotate through the driven bevel gear 29 meshing with it. The rotation of the lead screw 26 drives the tool holder 25 to traverse at the bottom of the lifting plate 20. As Figure 4 and Figure 5As shown, since the two ends of the tool holder 25 are provided with a crankshaft 27, the crankshaft 27 is a transmission member with two shaft ends, where two axially misaligned short shafts are connected to each other through an intermediate body. One end of the crankshaft 27 connected to the two ends of the tool holder 25 can rotate, but it always lies on the center line of the Z-shaped turning groove 28. Therefore, during the transverse movement of the tool holder 25, due to the change in the position of the other end of the crankshaft 27 within the Z-shaped turning groove 28, both the first blade 23 and the second blade 24 are flipped by 180 degrees. At the same time, along with the transverse movement, the first blade 23 and the second blade 24 also move from one side of the pressing plate 22 to the other side. Therefore, when only using the cutting station for operation, by adjusting the positions of the first blade 23 and the second blade 24 to adapt to the specific situation, the flexibility of the equipment is improved.

[0027] In one embodiment, as Figure 3 shown.

[0028] For the paper cutting equipment with adjustable cutter position provided in this embodiment, its transverse movement arm 12 includes opposite first arm plate 32 and second arm plate 33. A first rotating arm 13 and a second rotating arm 14 are rotatably connected between the first arm plate 32 and the second arm plate 33. Both the first rotating arm 13 and the second rotating arm 14 are inclined arms. When the transverse movement arm 12 reaches the end of its transverse movement, after the first rotating arm 13 or the second rotating arm 14 contacts the transverse movement opening 11, it can be flipped upward around its rotating connection axis so as to retract the first pressing wheel 15 or the second pressing wheel 16 upward.

[0029] In this embodiment, by providing the opposite first arm plate 32 and second arm plate 33, making their outer sides closely adhere to the inner side wall of the transverse movement opening 11, and between the first arm plate 32 and the second arm plate 33, providing the rotatably connected first rotating arm 13 and second rotating arm 14, and moreover, the first rotating arm 13 and the second rotating arm 14 are inclined arms. Therefore, through the transverse movement of the first arm plate 32 and the second arm plate 33, the transverse movement opening 11 can contact the first rotating arm 13 or the second rotating arm 14 to lift it, and at the same time, the rotating arm put into operation also moves to the working position during the transverse movement.

[0030] In one embodiment, as Figure 3 shown.

[0031] For the paper cutting equipment with adjustable cutter position provided in this embodiment, an end plate 34 is provided on the first rotating arm 13 or the second rotating arm 14. A wheel seat 35 is elastically connected to the end plate 34. An electric cylinder 36 for driving the wheel seat 35 to press downward is also provided on the end plate 34. The first pressing wheel 15 or the second pressing wheel 16 is provided on the wheel seat 35. A pressing wheel motor 37 for driving the first pressing wheel 15 or the second pressing wheel 16 to rotate is also provided on the wheel seat 35.

[0032] In this embodiment, the wheel seat 35 and the first pressing wheel 15 or the second pressing wheel 16 thereon can be pressed down by the drive of the electric cylinder 36, and the first pressing wheel 15 or the second pressing wheel 16 can be rotated by the drive of the pressing wheel motor 37 to assist in conveying the paper backward.

[0033] In one embodiment, as Figure 3 shown.

[0034] For the paper cutting device with adjustable cutter position provided in this embodiment, the end plate 34 and the wheel seat 35 are elastically connected by four springs 38.

[0035] In this embodiment, four springs 38 provide a specific implementation of the elastic connection between the end plate 34 and the wheel seat 35.

[0036] In one embodiment, as Figure 3 shown.

[0037] For the paper cutting device with adjustable cutter position provided in this embodiment, a toothed plate 39 is provided on the first arm plate 32 along the opening direction of the transverse movement port 11, and the straight rack 19 is fixed on the toothed plate 39.

[0038] In this embodiment, the straight rack 19 is fixed by the toothed plate 39. As the first arm plate 32 and the second arm plate 33 move transversely, the toothed plate 39 can move transversely in the same direction, and the length direction of the toothed plate 39 is also consistent with the transverse movement direction.

[0039] In one embodiment, as Figure 3 shown.

[0040] For the paper cutting device with adjustable cutter position provided in this embodiment, a bottom plate 40 is further provided in the frame 10 below the first blade 23, the second blade 24, and the pressing plate 22.

[0041] In this embodiment, the first blade 23, the second blade 24, and the pressing plate 22 all need to be padded by the bottom plate 40 below them to cooperate with their operations during work.

[0042] In one embodiment, as Figures 4-5 shown.

[0043] The paper cutting device with an adjustable cutter position provided in this embodiment has two slide rails 41 provided at the bottom of the lifting plate 20. The tool holder 25 is connected to the slide rails 41 through sliders 42. The lead screw 26 is fixed through bearing seats 43 provided on both sides of the bottom of the lifting plate 20. End seats 44 for the crankshaft 27 to be rotatably connected are provided at both ends of the tool holder 25. Tool shafts 45 are provided on both the first blade 23 and the second blade 24. One end of the crankshaft 27 is connected to the first blade 23 or the second blade 24 through the tool shaft 45. On this basis, the steering groove 28 includes a first straight groove 46 and a second straight groove 47 that are parallel to each other, and also includes an inclined groove 48 connecting the first straight groove 46 and the second straight groove 47. One end of the crankshaft 27 connected to the tool shaft 45 is always located on the center line between the first straight groove 46 and the second straight groove 47; wherein, when the lead screw 26 drives the tool holder 25 to move horizontally, the position of the other end of the crankshaft 27 in the first straight groove 46 and the second straight groove 47 can be switched, and when passing through the inclined groove 48, the tool shaft 45 is rotated by 180 degrees.

[0044] In this embodiment, through the arrangement of the slide rails 41 and the sliders 42, the tool holder 25 and the lifting plate 20 are slidably connected. End seats 44 are provided at both ends of the tool holder 25, and the end seats 44 are used to provide a rotational connection for the crankshaft 27. One end of the crankshaft 27 is coaxially arranged with the tool shaft 45. One end of the crankshaft 27 is always located on the center line between the first straight groove 46 and the second straight groove 47. As described above, during the horizontal movement of the tool holder 25, one end of the crankshaft 27 is always located on the center line between the first straight groove 46 and the second straight groove 47, and only a circumferential rotation around its own axis occurs. The position change of the other end of the crankshaft 27 in the Z-shaped steering groove 28 is from the first straight groove 46 to the second straight groove 47 through the inclined groove 48, or from the second straight groove 47 to the first straight groove 46 through the inclined groove 48. This causes both the first blade 23 and the second blade 24 to be rotated by 180 degrees. As Figure 4 shown, the first blade 23 and the second blade 24 are in close contact, and even can be pressed tightly together because the two steering grooves 28 have the same shape. That is, when the first blade 23 and the second blade 24 are to rotate, since they rotate in the same direction, the state of their close contact is released. At the same time, since the first blade 23 and the second blade 24 can return to their positions synchronously, they are in close contact again after returning. In this way, when the cutter 21 composed of the first blade 23 and the second blade 24 cuts the paper, no connection points that require secondary processing will be left on the paper. Therefore, after the first blade 23 and the second blade 24 come from one side of the pressing plate 22 to the other side, their cutting performance can still be comparable to that of a single blade of a traditional cutter.

[0045] In one embodiment, as Figure 5 shown.

[0046] The paper cutting device with an adjustable cutter position provided in this embodiment further has a gear groove 49 opened at the bottom of the lifting plate 20 for the driven bevel gear 29 to rotate and make way.

[0047] In this embodiment, by providing the gear groove 49, the space occupied by the driven bevel gear 29 at the bottom of the lifting plate 20 can be reduced.

[0048] The specific embodiments described above further elaborate on the object of the invention, the technical solutions, and the beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. In particular, for those skilled in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A paper cutting device with adjustable cutter position, characterized in that, It includes a first unwinding station (1), a first conveying station (2), and a first slitting station (3) arranged in sequence along a first direction, and also includes a second unwinding station (4), a second conveying station (5), and a second slitting station (6) arranged in sequence along a second direction opposite to the first direction. The first slitting station (3) and the second slitting station (6) are both connected to a shared cutting station (7). On one side of the cutting station (7) facing the second slitting station (6), there is a first blanking station (8), and on one side of the cutting station (7) facing the first slitting station (3), there is a second blanking station (9); At the cutting station (7), there is a gantry frame (10). A transverse movement opening (11) pointing to the first direction and the second direction is opened on the frame (10). A transverse movement arm (12) is arranged in the transverse movement opening (11). The two ends of the transverse movement arm (12) are respectively connected with a first rotating arm (13) facing the first slitting station (3) and a second rotating arm (14) facing the second slitting station (6). A first pressing wheel (15) and a second pressing wheel (16) are respectively arranged on the first rotating arm (13) and the second rotating arm (14). When the transverse movement arm (12) moves horizontally to one side of the pressing wheel in place, the pressing wheel on the other side retracts upward; A suspension rod (17) hanging down to the transverse movement arm (12) is arranged on the frame (10). The suspension rod (17) is connected with a rotating gear (18) through a bearing. A straight rack (19) for driving the rotating gear (18) is arranged on the transverse movement arm (12). A lifting plate (20) is arranged inside the frame (10). A cutting knife (21) and a pressing plate (22) are arranged below the lifting plate (20). The cutting knife (21) includes a first blade (23) and a second blade (24) arranged side by side. The bottoms of the first blade (23) and the second blade (24) are higher than the pressing plate (22). The first blade (23) and the second blade (24) are slidably connected to the bottom of the lifting plate (20) through a tool holder (25). A lead screw (26) for driving the tool holder (25) to move horizontally is arranged at the bottom of the lifting plate (20). Crank shafts (27) are arranged at both ends of the tool holder (25). One end of the crank shaft (27) is connected to the first blade (23) or the second blade (24), and the other end extends into a Z-shaped steering groove (28) opened at the bottom of the lifting plate (20). A driven bevel gear (29) is arranged on the lead screw (26). An expansion rod (30) extends downward from the rotating gear (18). The lower end of the expansion rod (30) penetrates through the lifting plate (20) and is connected with a driving bevel gear (31).

2. The paper cutting device with adjustable cutter position according to claim 1, characterized in that, The transverse moving arm (12) includes opposite first and second arm plates (32, 33). Between the first and second arm plates (32, 33), the first and second rotating arms (13, 14) are rotatably connected. Both the first and second rotating arms (13, 14) are inclined arms. When the transverse moving arm (12) reaches the transverse movement position, after the first rotating arm (13) or the second rotating arm (14) contacts the transverse movement opening (11), it can flip upward around its rotation connection axis, thereby retracting the first pressing wheel (15) or the second pressing wheel (16) upward.

3. The paper cutting device with adjustable cutter position according to claim 2, characterized in that, An end plate (34) is provided on the first rotating arm (13) or the second rotating arm (14). A wheel seat (35) is elastically connected to the end plate (34). An electric cylinder (36) for driving the wheel seat (35) to press downward is also provided on the end plate (34). The first pressing wheel (15) or the second pressing wheel (16) is arranged on the wheel seat (35). A pressing wheel motor (37) for driving the first pressing wheel (15) or the second pressing wheel (16) to rotate is also provided on the wheel seat (35).

4. The paper cutting device with adjustable cutter position according to claim 3, characterized in that, The end plate (34) and the wheel seat (35) are elastically connected by four springs (38).

5. The paper cutting device with adjustable cutter position according to claim 2, characterized in that, A toothed plate (39) along the opening direction of the transverse movement opening (11) is provided on the first arm plate (32). The straight toothed rack (19) is fixed on the toothed plate (39).

6. The paper cutting device with adjustable cutter position according to claim 1, characterized in that, A bottom plate (40) is further provided in the frame (10) and located below the first blade (23), the second blade (24), and the pressing plate (22).

7. The paper cutting device with adjustable cutter position according to claim 1, characterized in that, Two slide rails (41) are provided at the bottom of the lifting plate (20). The tool holder (25) is connected to the slide rails (41) through sliders (42). The lead screw (26) is fixed through bearing seats (43) provided on both sides of the bottom of the lifting plate (20). End seats (44) for the crankshaft (27) to rotatably connect are provided at both ends of the tool holder (25). Tool shafts (45) are provided on both the first blade (23) and the second blade (24). One end of the crankshaft (27) is connected to the first blade (23) or the second blade (24) through the tool shaft (45).

8. The paper cutting device with adjustable cutter position according to claim 7, characterized in that, The steering groove (28) includes a first straight groove (46) and a second straight groove (47) that are parallel to each other, and also includes an inclined groove (48) connecting the first straight groove (46) and the second straight groove (47). One end of the crankshaft (27) connected to the tool shaft (45) is always located on the midline between the first straight groove (46) and the second straight groove (47). Among them, when the lead screw (26) drives the tool holder (25) to move transversely, the position of the other end of the crankshaft (27) in the first straight groove (46) and the second straight groove (47) can be switched, and when passing through the inclined groove (48), the tool shaft (45) is flipped by 180 degrees.

9. The paper cutting device with adjustable cutter position according to claim 1, characterized in that, The two steering grooves (28) are respectively located on both sides of the lead screw (26), and the two steering grooves (28) have the same shape.

10. The paper cutting device with adjustable cutter position according to claim 1, characterized in that, A gear groove (49) for the driven bevel gear (29) to rotate and make way is also formed at the bottom of the lifting plate (20).

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