Paper cutter and paper cutting method thereof

Abstract

The present invention relates to the technical field of printing and packaging machinery, and in particular to a paper cutter and a paper cutting method thereof; by the structure of fixedly connecting a pushing plate to the first conveyor belt, replacing the original structure of pushing the paper on the paper cutting platform through a paper pushing block, since the first conveyor belt and the pushing plate move synchronously, on the one hand, there is no sliding friction between the lowermost paper and the first conveyor belt, on the other hand, there will be no gap between the pushing plate and the first conveyor belt, and there is no problem of missed feeding of the lowermost paper. Thirdly, the front extension part of the inserting plate is omitted, avoiding the rear end of the lower paper from warping, thereby ensuring the consistency of the cutting size of the paper; by setting a moving plate, the moving plate plays a role of paper blocking and sorting on the one hand, making one end of the paper in the X direction contact the moving plate and flattening. When cutting the paper, the moving plate presses the paper tightly through the lower end, and also plays a role of pressing and limiting the paper during cutting, thereby further ensuring the flatness of paper cutting.

Description

Technical Field

[0001] The present invention relates to the technical field of printing and packaging machinery, and particularly relates to a paper cutter and a paper cutting method thereof. Background Art

[0002] The existing paper cutter includes a paper cutting platform and a paper pushing frame that is arranged to move back and forth on the platform surface of the rear half of the paper cutting platform. A paper pushing block is fixedly installed at the front end of the paper pushing frame, and grid teeth are provided on the paper pushing surface of the paper pushing block. Since there is a gap between the bottom surface of the paper pushing block and the platform surface of the paper cutting platform, paper jamming is likely to occur during the paper pushing process, that is, the paper enters the bottom of the paper pushing block, resulting in the paper cutter being unable to complete the normal paper pushing work, thereby affecting the paper cutting work. In addition, to improve the paper cutting speed, a relatively fast paper pushing speed is required. However, if the paper pushing speed is fast, it is easy to occur that the paper pushing block has stopped the paper pushing work, while the paper still moves forward due to inertia, so that the paper cutting accuracy cannot be guaranteed, and thus it cannot meet the high-speed paper cutting requirements, and it is difficult to further improve the production speed of the paper cutter.

[0003] To solve the above problems, Chinese Patent with the authorization announcement number CN105965584B discloses a paper cutter, which includes a paper cutting platform and a paper pushing frame that is arranged to move back and forth on the platform surface of the rear half of the paper cutting platform. A paper pushing block is fixedly installed at the front end of the paper pushing frame, and grid teeth are provided on the paper pushing surface of the paper pushing block. A plurality of narrow strip-shaped shallow grooves in the front-back direction are transversely arranged on the platform surface of the rear half of the paper cutting platform, and the narrow strip-shaped shallow grooves correspond to the grid teeth. An insertion plate extending downward is provided at the bottom of the grid teeth and is inserted into the narrow strip-shaped shallow grooves. An activity plate is installed on the top of the paper pushing frame, and the activity plate is arranged to move in the front-back direction and is pushed by a longitudinal cylinder. A pressure paper plate is provided in front of the paper pushing block, and the pressure paper plate is arranged to move in the up-down direction and is pushed by a vertical cylinder. The vertical cylinder is fixedly installed at the front end of the activity plate. It can solve the technical problems of paper jamming and the inertia forward movement of the paper stack during the paper pushing process, ensure the paper cutting accuracy, and better meet the high-speed paper cutting requirements of the paper cutter, and improve the production speed of the paper cutter.

[0004] In the above patent solution, there are the following problems: 1. The paper cutting platform is fixed. During the paper pushing process, the bottom paper rubs against the paper cutting platform, and there will be sliding friction between the bottom paper and the paper cutting platform, resulting in distortion and damage, affecting the normal feeding of the paper. 2. The top surface height of the front extension part of the insertion plate is higher than the platform surface of the paper cutting platform. During the paper pushing process, the paper located below needs to be lifted and positioned on the front extension part. Although this structure can avoid the missed feeding of the paper below, the paper below will affect the flatness of the front end of the paper due to the rear end being lifted, resulting in the problem that the cutting size of the paper below is inconsistent with the cutting size of the paper above.

[0005] Therefore, how to improve the structure of the paper cutter and the paper cutting method, so as to ensure the production speed of the paper cutter and avoid paper jam, further improve the paper cutting accuracy, ensure the size consistency of the whole stack of paper, and avoid the distortion and damage of the paper at the bottom due to friction, has become a technical problem that needs to be solved urgently. Summary of the invention

[0006] The technical problem to be solved by the present invention is: how to improve the structure of a paper cutter and a paper cutting method, so as to ensure the production speed of the paper cutter and avoid paper jam, further improve the paper cutting accuracy, ensure the size consistency of the whole stack of paper, and avoid the distortion and damage of the paper at the bottom due to friction.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A paper cutter comprises a first conveyor belt, a transfer platform and a second conveyor belt arranged in sequence along an X direction, wherein the upper surfaces of the first conveyor belt, the transfer platform and the second conveyor belt are located in the same horizontal plane;

[0009] The paper cutter further comprises a push plate, the lower end of which is fixedly connected to the first conveyor belt, and the X-direction side of the push plate is perpendicular to the upper surface of the first conveyor belt;

[0010] The paper cutter further comprises a arranging and pressing mechanism, which comprises a moving plate and a first driving mechanism, wherein the moving plate is rectangular in shape; a plurality of contact sensors are distributed along the Z direction on the side of the moving plate away from the X direction, a pressure sensor is provided at the lower end of the moving plate, the moving plate is located above the first conveyor belt near the end, the moving plate is perpendicular to the upper surface of the first conveyor belt, the first driving mechanism is connected to the moving plate, and the first driving mechanism is used to drive the moving plate to move along the Z direction;

[0011] The paper cutter also includes a cutting mechanism, and the cutting mechanism is located above the transfer platform.

[0012] In the above embodiment, it should be noted that the X-up direction on both sides of the push plate is respectively connected to a connecting plate in the shape of a right-angled isosceles right-angled triangle plate, one right-angled side of the connecting plate is connected to the stripping plate, and the other right-angled side is connected to the belt surface of the first conveyor belt. This structure can play a role in reinforcing the push plate on the first conveyor belt and a lateral limiting role for the paper.

[0013] Furthermore, in the above-mentioned paper cutter structure, the cutting mechanism includes a support frame, a screw guide mechanism, a first motor, a slide seat, a circular cutter and a second motor;

[0014] The support frame is located above the transfer platform, the screw guide mechanism is connected to the support frame, the screw guide mechanism is arranged along the Y direction, the first motor is connected to the screw of the screw guide mechanism in a transmission manner, the slide is movably connected to the screw guide mechanism, the circular cutter is rotatably connected to the slide, the axial direction of the circular cutter is the X direction, the second motor is connected to the slide, and the second motor is connected to the circular cutter in a transmission manner.

[0015] Furthermore, the above-mentioned paper cutter structure also includes a second driving mechanism, and the second driving mechanism is used to drive the support frame to move along the Z direction.

[0016] Furthermore, in the above-mentioned paper cutter structure, the transfer platform is provided with a groove arranged along the Y direction for avoiding the circular cutter.

[0017] Furthermore, in the above-mentioned paper cutter structure, the X-direction and the position away from the X-direction of the slide seat are respectively connected to connecting seats, and more than two pressure rollers are rotatably connected to the connecting seats, and the circumferential surface of the pressure roller is provided with an elastic material layer.

[0018] Further, in the above-mentioned paper cutter structure, the first driving mechanism includes a first support, a first bracket, a first guide rod, a first cylinder and a first sliding connection part;

[0019] The two first supports are symmetrically connected to the frames on both sides of the first conveyor belt, the two first guide rods are arranged along the Z direction, the lower end of the first guide rod is connected to the first support, the two sides of the first bracket are respectively connected to the upper end of the first guide rod, the cylinder body of the first cylinder is vertically fixed downward to the first bracket, the first sliding connection part is respectively provided with a first guide sleeve that slides with the first guide rod, the first sliding connection part is connected to the lower end of the piston rod of the first cylinder, and the movable plate is connected to the lower part of the first sliding connection part.

[0020] Further, in the above-mentioned paper cutter structure, the second driving mechanism includes a second support, a second bracket, a second guide rod, a second cylinder and a second sliding connection part;

[0021] The two second supports are symmetrically connected to the frames on both sides of the second conveyor belt, the two second guide rods are arranged along the Z direction, the lower end of the second guide rod is connected to the second support, the two sides of the second bracket are respectively connected to the upper end of the second guide rod, the cylinder body of the second cylinder is vertically fixed downward to the second bracket, the second sliding connection part is respectively provided with a second guide sleeve that slides with the second guide rod, the second sliding connection part is connected to the lower end of the piston rod of the second cylinder, and the connecting seat is connected to the second sliding connection part.

[0022] Furthermore, in the above-mentioned paper cutter structure, the paper cutter further comprises a third cylinder, a cylinder body of the third cylinder is connected to the frame along the X direction, and the cylinder body of the third cylinder is connected to the push plate.

[0023] Furthermore, in the above-mentioned paper cutter structure, a plurality of planers are distributed in a circular array on the X direction and the side away from the X direction of the circular cutter.

[0024] The present invention also protects a paper cutting method of the above-mentioned paper cutting machine, comprising the following steps:

[0025] Step 1: neatly stack the stack of paper to be cut on the first conveyor belt, and control the first driving mechanism to drive the movable plate to move downward, so that the distance between the lower end of the movable plate and the upper surface of the first conveyor belt is 0.1-0.2 mm;

[0026] Step 2: Control the first conveyor belt to rotate at a first speed, drive the push plate to move in the X direction, thereby pushing the paper to move in the X direction. When the X-side end of the paper approaches the side of the movable plate that is away from the X direction, control the first conveyor belt to decelerate to the second speed and rotate in the same direction. When the X-side ends of all the paper contact the contact sensor on the movable plate, control the first conveyor belt to stop rotating, control the first driving mechanism to drive the movable plate to move upward, and move the lower end of the movable plate to the top of the paper.

[0027] Step 3: Control the first conveyor belt to rotate at the third speed as the starting speed, gradually slow down, drive the push plate to move in the X direction, and thus push the paper to move in the X direction. The third speed is faster than the second speed and less than the first speed. When the cutting position of the paper moves to the transfer platform, control the first conveyor belt to stop rotating.

[0028] Step 4: Control the first driving mechanism to drive the movable plate to move downward, so that the lower end of the movable plate is pressed against the upper surface of the uppermost paper, and when the pressure value received by the pressure sensor reaches a preset threshold, control the first driving mechanism to stop;

[0029] Step 5: Control the first motor to drive the slide to one end of the screw guide mechanism in advance, and control the second drive mechanism to adjust the height of the support frame in advance. When the paper cutting position moves to the transfer platform, control the second motor to drive the circular cutter to rotate, and control the first motor to rotate to move the slide to the other end of the screw guide mechanism. During the movement, the pressure roller is pressed against the upper surface of the paper, and the circular cutter completely cuts the paper.

[0030] Step 6: When the circular cutter is completely separated from the paper, the first driving mechanism is controlled to drive the movable plate to separate from the paper, and the first conveyor belt and the second conveyor belt are controlled to rotate synchronously at a first speed, so that the cut paper is sent out from the end of the second conveyor belt;

[0031] Step 7: After the first conveyor belt separates from the paper, control the first conveyor belt to rotate in the reverse direction so that the pusher plate returns to the position before Step 1.

[0032] The beneficial effects of the present invention are as follows: In the paper cutting machine structure involved in the present invention, the structure of fixedly connecting the pusher plate to the first conveyor belt is used to replace the original structure of pushing the paper on the paper cutting platform through the paper pusher block. Since the first conveyor belt and the pusher plate move synchronously, firstly, there is no sliding friction between the lowermost paper and the first conveyor belt; secondly, there is no gap between the pusher plate and the first conveyor belt, and there is no problem of the lowermost paper being missed during feeding; thirdly, the front extension part of the insertion plate is omitted, avoiding the rear end of the lower paper from warping, thereby ensuring the consistency of the cutting size of the paper. By setting the moving plate, on the one hand, the moving plate plays a role in blocking and sorting the paper, making one end of the paper in the X direction contact the moving plate and flattening it, avoiding the problem of inconsistent paper feeding caused by the inertial effect of the paper during high-speed feeding in the early stage. When cutting the paper, the moving plate presses the paper tightly through the lower end, and also plays a role in pressing and limiting the paper during cutting, thereby further ensuring the flatness of the paper cutting.

[0033] In the paper cutting method, through the multi-stage design of the feeding speed, that is, the first speed is used for fast feeding during the initial paper feeding. When the X-direction section of the paper is about to contact the moving plate, it decelerates to the second speed for slow movement, so that the paper is sorted into a neat stack by the moving plate at a slow speed, and then the paper is sent to the cutting point at a slower third speed. The above three-stage paper feeding method ensures the paper feeding efficiency on the one hand and the flatness and size consistency of the paper cutting on the other hand. Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of a paper cutting machine according to a specific embodiment of the present invention;

[0035] Figure 2 is a schematic structural diagram of a paper cutting machine according to a specific embodiment of the present invention;

[0036] Figure 3 is Figure 2 an enlarged view of part A of

[0037] Label Description:

[0038] 1. First conveyor belt;

[0039] 2. Transfer platform; 21. Groove;

[0040] 3. Second conveyor belt;

[0041] 4. Pusher plate; 41. Connecting plate;

[0042] 5. Arrangement and pressing mechanism; 51. Moving plate; 52. First driving mechanism; 521. First support; 522. First bracket; 523. First guide rod; 524. First cylinder; 525. First sliding connection part;

[0043] 6. Cutting mechanism; 61. Support frame; 62. Screw guide mechanism; 63. First motor; 64. Sliding seat; 641. Connecting seat; 642. Pressing roller; 65. Circular cutter; 651. Planer; 66. Second motor; 67. Second driving mechanism; 671. Second support; 672. Second bracket; 673. Second guide rod; 674. Second cylinder; 675. Second sliding connection part;

[0044] 5. The third cylinder. DETAILED DESCRIPTION

[0045] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0046] Please refer to Figures 1 to 3 , a specific embodiment of the present invention relates to a paper cutter, comprising a first conveyor belt 1, a transfer platform 2 and a second conveyor belt 3 arranged in sequence along the X direction, wherein the upper surfaces of the first conveyor belt 1, the transfer platform 2 and the second conveyor belt 3 are located in the same horizontal plane;

[0047] The paper cutter further comprises a push plate 4, the lower end of which is fixedly connected to the first conveyor belt 1, and the X-direction side of the push plate 4 is perpendicular to the upper surface of the first conveyor belt 1;

[0048] The paper cutter further comprises a arranging and pressing mechanism 5, which comprises a moving plate 51 and a first driving mechanism 52. The moving plate 51 is rectangular in shape. A plurality of contact sensors are distributed along the Z direction on the side of the moving plate 51 that is away from the X direction. A pressure sensor is provided at the lower end of the moving plate 51. The moving plate 51 is located above the first conveyor belt 1 near the end. The moving plate 51 is perpendicular to the upper surface of the first conveyor belt 1. The first driving mechanism 52 is connected to the moving plate 51. The first driving mechanism 52 is used to drive the moving plate 51 to move along the Z direction.

[0049] The paper cutter further comprises a cutting mechanism 6 , and the cutting mechanism 6 is located above the transfer platform 2 .

[0050] In the above embodiment, it should be noted that the X-upward direction on both sides of the push plate 4 is respectively connected to a connecting plate 41 in the shape of a right-angled isosceles right-angled triangle plate, one right-angled side of the connecting plate 41 is connected to the stripping plate, and the other right-angled side is connected to the belt surface of the first conveyor belt 1. This structure can play a role in reinforcing the push plate 4 on the first conveyor belt 1 and a lateral limiting role for the paper.

[0051] By means of the structure in which the pusher plate 4 is fixedly connected to the first conveyor belt 1, replacing the original structure of pushing the paper on the paper cutting platform by the paper pusher block. Since the first conveyor belt 1 and the pusher plate 4 move synchronously, first, there is no sliding friction between the lowermost paper and the first conveyor belt 1; second, there is no gap between the pusher plate 4 and the first conveyor belt 1, and there is no problem of the lowermost paper being missed in feeding; third, the front extension part of the insertion plate is omitted, avoiding the rear end of the lower paper from warping, thereby ensuring the consistency of the cutting size of the paper. By setting the moving plate 51, the moving plate 51 plays a role in blocking and sorting the paper, making one end of the paper in the X direction contact the moving plate 51 and flattening, avoiding the problem that the paper transportation is inconsistent due to the inertial effect of the paper during high-speed transportation in the early stage. When cutting the paper, the moving plate 51 presses the paper tightly through the lower end, and also plays a role in pressing and limiting the paper during cutting, thereby further ensuring the flatness of the paper cutting.

[0052] As an optional implementation manner, the cutting mechanism 6 includes a support frame 61, a lead screw guide mechanism 62, a first motor 63, a sliding seat 64, a circular cutter 65 and a second motor 66;

[0053] The support frame 61 is located above the transfer platform 2. The lead screw guide mechanism 62 is connected to the support frame 61. The lead screw guide mechanism 62 is arranged along the Y direction. The first motor 63 is in transmission connection with the lead screw of the lead screw guide mechanism 62. The sliding seat 64 is movably connected to the lead screw guide mechanism 62. The circular cutter 65 is rotatably connected to the sliding seat 64. The axial direction of the circular cutter 65 is the X direction. The second motor 66 is connected to the sliding seat 64, and the second motor 66 is in transmission connection with the circular cutter 65.

[0054] In the above implementation manner, by designing the paper cutting method in which the circular cutter 65 moves along the Y direction to replace the traditional guillotine paper cutting, the flatness of the paper cutting can be further improved. Since the paper cutting method by the high-speed rotation of the circular cutter 65 is more labor-saving and energy-saving than the guillotine knife.

[0055] As an optional implementation manner, it further includes a second driving mechanism 67, and the second driving mechanism 67 is used to drive the support frame 61 to move along the Z direction.

[0056] In the above implementation manner, the second driving mechanism 67 is used to flexibly adjust the height of the cutting mechanism according to the thickness of the paper.

[0057] As an optional implementation manner, the transfer platform 2 is provided with a groove 21 arranged along the Y direction for avoiding the circular cutter 65.

[0058] In the above embodiments, the groove 21 is provided to facilitate the circular cutter 65 to completely cut the paper, preventing the circular cutter 65 from contacting the transfer platform 2 when moving.

[0059] As an alternative embodiment, connection seats 641 are respectively connected to the X-direction and the direction away from the X-direction of the sliding seat 64. Two or more pressure roller wheels 642 are rotatably connected to the connection seats 641, and an elastic material layer is provided on the circumferential surface of the pressure roller wheels 642.

[0060] In the above embodiments, the function of the pressure roller wheels 642 is that when the circular cutter 65 moves along the Y-direction, the pressure roller wheels 642 can press against both sides of the paper cutting position, preventing the paper on both sides from shifting during cutting, thereby further ensuring the flatness of paper cutting.

[0061] As an alternative embodiment, the first driving mechanism 52 includes a first support 521, a first bracket 522, a first guide rod 523, a first cylinder 524, and a first sliding connection part 525;

[0062] The two first supports 521 are symmetrically connected to the frames on both sides of the first conveyor belt 1. The two first guide rods 523 are arranged along the Z-direction. The lower ends of the first guide rods 523 are connected to the first supports 521. The two sides of the first bracket 522 are respectively connected to the upper ends of the first guide rods 523. The cylinder body of the first cylinder 524 is vertically fixed downward on the first bracket 522. The two sides of the first sliding connection part 525 are respectively provided with first guide sleeves that are slidably matched with the first guide rods 523. The first sliding connection part 525 is connected to the lower end of the piston rod of the first cylinder 524, and the moving plate 51 is connected to the lower part of the first sliding connection part 525.

[0063] As an alternative embodiment, the second driving mechanism 67 includes a second support 671, a second bracket 672, a second guide rod 673, a second cylinder 674, and a second sliding connection part 675;

[0064] The two second supports 671 are symmetrically connected to the frames on both sides of the second conveyor belt 3. The two second guide rods 673 are arranged along the Z-direction. The lower ends of the second guide rods 673 are connected to the second supports 671. The two sides of the second bracket 672 are respectively connected to the upper ends of the second guide rods 673. The cylinder body of the second cylinder 674 is vertically fixed downward on the second bracket 672. The two sides of the second sliding connection part 675 are respectively provided with second guide sleeves that are slidably matched with the second guide rods 673. The second sliding connection part 675 is connected to the lower end of the piston rod of the second cylinder 674, and the connection seat 641 is connected to the second sliding connection part 675.

[0065] As an optional implementation, the paper cutter further comprises a third cylinder 5 , a cylinder body of the third cylinder 5 is connected to the frame along the X direction, and the cylinder body of the third cylinder 5 is connected to the push plate 4 .

[0066] In the above embodiment, the third cylinder 5 plays an auxiliary role in pushing the push plate 4. In actual application, if the driving motor driving the first conveyor belt 1 is a unidirectional motor, when it is necessary to control the push plate 4 to return, the third cylinder 5 can be used to drive the push plate 4 to return.

[0067] As an optional implementation, a plurality of planers 651 are distributed in a circular array on the X-direction and the side away from the X-direction of the circular cutter 65 .

[0068] In the above embodiment, when the circular cutter 65 cuts the paper, the planers 651 on both sides can plane the burrs on the cut surface of the paper flat.

[0069] In this embodiment, the paper cutting method of the above-mentioned paper cutting machine includes the following steps:

[0070] Step 1: neatly stack the stack of paper to be cut on the first conveyor belt 1, and control the first driving mechanism 52 to drive the movable plate 51 to move downward, so that the distance between the lower end of the movable plate 51 and the upper surface of the first conveyor belt 1 is 0.1-0.2 mm;

[0071] Step 2: Control the first conveyor belt 1 to rotate at a first speed, drive the push plate 4 to move in the X direction, thereby pushing the paper to move in the X direction. When the X-side end of the paper approaches the side of the movable plate 51 that is away from the X direction, control the first conveyor belt 1 to decelerate to the second speed and rotate in the same direction. When the X-side ends of all the paper contact the contact sensor on the movable plate 51, control the first conveyor belt 1 to stop rotating, and control the first driving mechanism 52 to drive the movable plate 51 to move upward, so that the lower end of the movable plate 51 moves to the top of the paper.

[0072] Step 3: Control the first conveyor belt 1 to rotate at a third speed as the starting speed, gradually slow down, drive the push plate 4 to move in the X direction, and thus push the paper to move in the X direction. The third speed is faster than the second speed and less than the first speed. When the cutting position of the paper moves to the transfer platform 2, control the first conveyor belt 1 to stop rotating.

[0073] Step 4: Control the first driving mechanism 52 to drive the movable plate 51 to move downward, so that the lower end of the movable plate 51 is pressed against the upper surface of the uppermost paper, and when the pressure value received by the pressure sensor reaches a preset threshold, control the first driving mechanism 52 to stop;

[0074] Step 5: Pre-control the first motor 63 to drive the slide 64 to move to one end of the screw guide mechanism 62, and pre-control the second drive mechanism 67 to adjust the height of the support frame 61. When the cutting position of the paper moves to the transfer platform 2, control the second motor 66 to drive the circular cutter 65 to rotate, and control the first motor 63 to rotate, so that the slide 64 moves to the other end of the screw guide mechanism 62. During the movement, the pressure roller 642 presses against the upper surface of the paper, and the circular cutter 65 completely cuts the paper;

[0075] Step 6: After the circular cutter 65 completely disengages from the paper, control the first drive mechanism 52 to drive the moving plate 51 to disengage from the paper, and control the first conveyor belt 1 and the second conveyor belt 3 to rotate synchronously at the first speed, so that the cut paper is sent out from the end of the second conveyor belt 3;

[0076] Step 7: After the first conveyor belt 1 disengages from the paper, control the first conveyor belt 1 to rotate in the reverse direction to return the pusher plate 4 to the position before Step 1.

[0077] In the above embodiments, a PLC is further included. The paper cutting machine further includes drive motors respectively for driving the first conveyor belt 1 and the second conveyor belt 3. The PLC is electrically connected to the drive motors, the first cylinder 524, the second cylinder 674, the third cylinder 5, the first motor 63, the second motor 66, the contact sensor, and the pressure sensor; the corresponding control program is set by the PLC to realize the automation of paper cutting and conveying.

[0078] In the above paper cutting method, through the multi-stage design of the feeding speed, that is, the first speed is used for fast feeding during the initial paper feeding. When the X-direction segment of the paper is about to contact the moving plate 51, it decelerates to the second speed for slow movement, so that the moving plate 51 arranges the paper into a neat stack at a slow speed, and then the paper is sent to the cutting position at a slower third speed. The above three-stage paper feeding method ensures the paper feeding efficiency on the one hand and the flatness and size consistency of the paper cutting on the other hand.

[0079] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the related technical field, is equally included in the patent protection scope of the present invention.

Claims

1. A paper cutting method of a paper cutting machine, characterized in that, Based on the paper cutter, the paper cutter comprises a first conveyor belt, a transfer platform and a second conveyor belt arranged in sequence along the X direction, and the upper surfaces of the first conveyor belt, the transfer platform and the second conveyor belt are located in the same horizontal plane; The paper cutter further comprises a push plate, the lower end of which is fixedly connected to the first conveyor belt, and the X-direction side of the push plate is perpendicular to the upper surface of the first conveyor belt; The paper cutter further comprises a arranging and pressing mechanism, which comprises a moving plate and a first driving mechanism, wherein the moving plate is rectangular in shape; a plurality of contact sensors are distributed along the Z direction on the side of the moving plate away from the X direction, a pressure sensor is provided at the lower end of the moving plate, the moving plate is located above the first conveyor belt near the end, the moving plate is perpendicular to the upper surface of the first conveyor belt, the first driving mechanism is connected to the moving plate, and the first driving mechanism is used to drive the moving plate to move along the Z direction; The paper cutter also includes a cutting mechanism, and the cutting mechanism is located above the transfer platform; The paper cutting method comprises the following steps: Step 1: neatly stack the stack of paper to be cut on the first conveyor belt, and control the first driving mechanism to drive the movable plate to move downward, so that the distance between the lower end of the movable plate and the upper surface of the first conveyor belt is 0.1-0.2 mm; Step 2: Control the first conveyor belt to rotate at a first speed, drive the push plate to move in the X direction, thereby pushing the paper to move in the X direction. When the X-side end of the paper approaches the side of the movable plate that is away from the X direction, control the first conveyor belt to decelerate to the second speed and rotate in the same direction. When the X-side ends of all the paper trigger the contact sensor on the movable plate, control the first conveyor belt to stop rotating, control the first driving mechanism to drive the movable plate to move upward, and move the lower end of the movable plate to the top of the paper. Step 3: Control the first conveyor belt to rotate at the third speed as the starting speed, gradually slow down, drive the push plate to move in the X direction, and thus push the paper to move in the X direction. The third speed is faster than the second speed and less than the first speed. When the cutting position of the paper moves to the transfer platform, control the first conveyor belt to stop rotating. Step 4: Control the first driving mechanism to drive the movable plate to move downward, so that the lower end of the movable plate is pressed against the upper surface of the uppermost paper, and when the pressure value received by the pressure sensor reaches a preset threshold, control the first driving mechanism to stop; Step 5: Control the first motor to drive the slide to one end of the screw guide mechanism in advance, and control the second drive mechanism to adjust the height of the support frame in advance. When the paper cutting position moves to the transfer platform, control the second motor to drive the circular cutter to rotate, and control the first motor to rotate to move the slide to the other end of the screw guide mechanism. During the movement, the pressure roller is pressed against the upper surface of the paper, and the circular cutter completely cuts the paper. Step 6: When the circular cutter is completely separated from the paper, the first driving mechanism is controlled to drive the movable plate to separate from the paper, and the first conveyor belt and the second conveyor belt are controlled to rotate synchronously at a first speed, so that the cut paper is sent out from the end of the second conveyor belt; Step 7: After the first conveyor belt is separated from the paper, the first conveyor belt is controlled to rotate in the opposite direction so that the push plate returns to the position before step 1.

2. The paper cutting method of the paper cutting machine according to claim 1, characterized in that, The cutting mechanism comprises a support frame, a screw guide mechanism, a first motor, a slide seat, a circular cutter and a second motor; The support frame is located above the transfer platform, the screw guide mechanism is connected to the support frame, the screw guide mechanism is arranged along the Y direction, the first motor is connected to the screw of the screw guide mechanism in a transmission manner, the slide is movably connected to the screw guide mechanism, the circular cutter is rotatably connected to the slide, the axial direction of the circular cutter is the X direction, the second motor is connected to the slide, and the second motor is connected to the circular cutter in a transmission manner.

3. The paper cutting method of the paper cutting machine according to claim 2, characterized in that, It also includes a second driving mechanism, which is used to drive the support frame to move along the Z direction.

4. The paper cutting method of the paper cutter according to claim 3, characterized in that, The transfer platform is provided with a groove arranged along the Y direction for avoiding the circular cutter.

5. The paper cutting method of the paper cutting machine according to claim 2, characterized in that, The X-direction and the position away from the X-direction of the slide seat are respectively connected with connecting seats, and more than two pressing rollers are rotatably connected to the connecting seats. The circumferential surface of the pressing roller is provided with an elastic material layer.

6. The paper cutting method of the paper cutter according to claim 1, characterized in that The first driving mechanism includes a first support, a first bracket, a first guide rod, a first cylinder and a first sliding connection part; The two first supports are symmetrically connected to the frames on both sides of the first conveyor belt, the two first guide rods are arranged along the Z direction, the lower end of the first guide rod is connected to the first support, the two sides of the first bracket are respectively connected to the upper end of the first guide rod, the cylinder body of the first cylinder is vertically fixed downward to the first bracket, the first sliding connection part is respectively provided with a first guide sleeve that slides with the first guide rod, the first sliding connection part is connected to the lower end of the piston rod of the first cylinder, and the movable plate is connected to the lower part of the first sliding connection part.

7. The paper cutting method of the paper cutter according to claim 5, characterized in that, The second driving mechanism includes a second support, a second bracket, a second guide rod, a second cylinder and a second sliding connection part; The two second supports are symmetrically connected to the frames on both sides of the second conveyor belt, the two second guide rods are arranged along the Z direction, the lower end of the second guide rod is connected to the second support, the two sides of the second bracket are respectively connected to the upper end of the second guide rod, the cylinder body of the second cylinder is vertically fixed downward to the second bracket, the second sliding connection part is respectively provided with a second guide sleeve that slides with the second guide rod, the second sliding connection part is connected to the lower end of the piston rod of the second cylinder, and the connecting seat is connected to the second sliding connection part.

8. The paper cutting method of the paper cutting machine according to claim 1, characterized in that, The paper cutter further comprises a third cylinder, a cylinder body of the third cylinder is connected to the frame along the X direction, and the cylinder body of the third cylinder is connected to the push plate.

9. The paper cutting method of the paper cutting machine according to claim 2, characterized in that, A plurality of planers are distributed in a circular array on the X direction and the side away from the X direction of the circular cutter.

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