Thin paper cutting device and cutting method

Abstract

The present invention relates to a thin paper cutting device and method, comprising a plurality of guide roller mechanisms for sequentially outputting a plurality of paper segments; a first suction mechanism, disposed on the paper output side of the plurality of guide roller mechanisms, for sucking the paper segments outputted from the plurality of guide roller mechanisms; a second suction mechanism, cyclically movable between the paper absorption side and the paper output side of the first suction mechanism; when the second suction mechanism is located on the paper absorption side of the first suction mechanism, the two mechanisms are opposed to each other, and the second suction mechanism is used to suck the paper segments on the first suction mechanism; when the second suction mechanism is located on the paper output side of the first suction mechanism, the two mechanisms are staggered; a motion platform, for driving the second suction mechanism to cyclically move between the paper absorption side and the paper output side of the first suction mechanism; and a cutting mechanism, disposed on the paper output side of the first suction mechanism, for cutting the thin paper. The present invention ensures that the thin paper does not wrinkle during cutting, thereby improving the cutting accuracy of the thin paper.

Description

Technical Field

[0001] The present invention relates to the field of cutting technology, in particular to a thin paper cutting device and a cutting method. Background Art

[0002] Paper is typically produced in the form of rolls, which facilitate transportation and storage, as well as subsequent processing. Before use or binding, paper is typically cut into sheets. To improve paper cutting efficiency, paper cutting equipment is commonly used in the prior art. Conventional paper cutting equipment is typically suitable for cutting paper of a certain thickness. However, when cutting thin paper, due to its thinness, wrinkles easily form, resulting in inaccurate cut dimensions. Providing a thin paper cutting device with improved cutting accuracy is a technical problem that urgently needs to be addressed in this field. Summary of the Invention

[0003] To this end, the present invention provides a thin paper cutting device with improved cutting accuracy.

[0004] To solve the above technical problem, the present invention provides a cutting device for thin paper, wherein the thin paper includes a plurality of paper segments connected in sequence along its length direction, and the cutting device includes:

[0005] A plurality of guide roller mechanisms are used to drive and guide the thin paper to move along a preset path and output a plurality of paper segments of the thin paper in sequence;

[0006] a first adsorption mechanism, provided on a paper output side of the plurality of guide roller mechanisms, the first adsorption mechanism being used to adsorb paper segments output from the plurality of guide roller mechanisms;

[0007] The second adsorption mechanism can be cyclically moved between a first position and a second position. When the second adsorption mechanism is in the first position, the second adsorption mechanism is located on the paper adsorption side of the first adsorption mechanism and can adsorb the paper segment on the first adsorption mechanism. When the second adsorption mechanism is in the second position, the second adsorption mechanism and the adsorbed paper segment are located on the paper output side of the first adsorption mechanism, and the paper segment adjacent to the paper segment on the second adsorption mechanism moves to the first adsorption mechanism.

[0008] A motion platform, used for driving the second adsorption mechanism to cyclically move to the first position and the second position;

[0009] The cutting mechanism is provided at the paper output side of the first adsorption mechanism, and is used for cutting the paper segment located on the first adsorption mechanism and the paper segment located on the second adsorption mechanism at the second position.

[0010] Furthermore, each guide roller mechanism includes a guide roller, and the guide roller is used to tension the thin paper. At least one guide roller mechanism also includes a first driving device, and the first driving device is used to drive at least one guide roller to rotate to drive the thin paper to move.

[0011] Furthermore, the guide roller mechanism closest to the first adsorption mechanism includes the first driving device.

[0012] Furthermore, at least one of the guide roller mechanisms further includes a position detection element and a second drive device, wherein the position detection element is used to detect the position of the side edge of the thin paper, and the second drive device is used to drive at least one of the guide rollers to move axially to correct the deviation of the thin paper.

[0013] Furthermore, the two guide roller mechanisms include the second driving device.

[0014] Furthermore, at least one of the guide roller mechanisms further includes a tension detection element and a third driving device, wherein the tension detection element is used to detect the tension of the thin paper, and the third driving device is used to drive at least one of the guide rollers to move radially to adjust the tension of the thin paper.

[0015] Furthermore, the two guide roller mechanisms include the third driving device.

[0016] Furthermore, the cutting equipment includes a plurality of the second adsorption mechanisms, the moving platform is a turntable, and the plurality of the second adsorption mechanisms are evenly distributed on the turntable along the circumference of the turntable. The turntable drives the second adsorption mechanisms to move circumferentially, and the first adsorption mechanism is arranged on the radial outside of the turntable.

[0017] Furthermore, the cutting mechanism includes a cutting knife and a fourth driving device, wherein the cutting knife is used to cut the thin paper, and the fourth driving device is used to drive the cutting knife to move closer to and away from the thin paper.

[0018] The present invention also provides a method for cutting thin paper, comprising the following steps:

[0019] S1, provide the cutting equipment, and proceed to step S2;

[0020] S2, placing the last paper segment of the tissue paper at a position where it can be adsorbed by the first adsorption mechanism, and proceeding to step S3;

[0021] S3, the first adsorption mechanism starts the adsorption function, adsorbs the last paper segment, and enters step S4;

[0022] S4, placing the second adsorption mechanism in the first position, and proceeding to step S5;

[0023] S5, the first adsorption mechanism turns off the adsorption function, and the second adsorption mechanism turns on the adsorption function to adsorb the last paper segment, and then proceeds to step S6;

[0024] S6. The guide roller mechanism drives the thin paper to move so that the next-end paper segment moves to a position where it can be adsorbed by the first adsorption mechanism. At the same time, the motion platform drives the second adsorption mechanism to move to a second position, and the process proceeds to step S7.

[0025] S7, the first adsorption mechanism starts the adsorption function, and the process proceeds to step S8;

[0026] S8, the cutting mechanism separates the second-end paper segment on the first adsorption mechanism from the last paper segment on the second adsorption mechanism at the second position, and the second-end paper segment becomes the new last paper segment, and the process proceeds to step S9;

[0027] S9. Determine whether the thin paper cutting is completed. If so, the cutting is completed. If not, the motion platform drives the second adsorption mechanism after transferring the paper segment away or another empty second adsorption mechanism to move to the first position, and return to step S5.

[0028] The above technical solution of the present invention has the following advantages over the prior art: in the thin paper cutting device and cutting method described in the present invention, when cutting thin paper, the two paper segments on both sides of the cutting position are respectively adsorbed on the first adsorption mechanism and the second adsorption mechanism, which can ensure that the thin paper is flat on the first adsorption mechanism and the second adsorption mechanism, ensuring that the thin paper will not wrinkle during cutting, thereby improving the cutting accuracy of the thin paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0030] Figure 1 A partial schematic diagram of the tissue paper disclosed in the present invention;

[0031] Figure 2 A top view of the cutting device disclosed in the present invention;

[0032] Figure 3 A three-dimensional diagram of the cutting device disclosed in the present invention from one angle;

[0033] Figure 4 This is a three-dimensional view from another angle of the cutting device disclosed in the present invention.

[0034] Explanation of the reference numerals in the accompanying drawings in the specification: 1. thin paper; 11. paper segment; 2. guide roller mechanism; 21. guide roller; 22. first drive device; 23. position detection element; 24. second drive device; 25. third drive device; 3. first adsorption mechanism; 4. second adsorption mechanism; 5. motion platform; 51. guide rail; 6. cutting mechanism; 61. cutting knife; 62. fourth drive device. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0036] See also Figures 1 to 4 FIG. 1 is an embodiment of a thin paper cutting device provided by the present invention.

[0037] The tissue paper 1 comprises a plurality of paper segments 11 connected in sequence along the length direction thereof.

[0038] Cutting equipment includes:

[0039] A plurality of guide roller mechanisms 2 for driving and guiding the thin paper to move along a preset path and sequentially outputting a plurality of paper segments 11 of the thin paper 1;

[0040] A first adsorption mechanism 3 is provided on the paper output side of the plurality of guide roller mechanisms 2, and is used to adsorb the paper segments 11 output from the plurality of guide roller mechanisms 2;

[0041] The second adsorption mechanism 4 can be cyclically moved to a first position and a second position. When the second adsorption mechanism 4 is in the first position, the second adsorption mechanism 4 is located on the paper adsorption side of the first adsorption mechanism 3 and can adsorb the paper segment 11 on the first adsorption mechanism 3. When the second adsorption mechanism 4 is in the second position, the second adsorption mechanism 4 and the adsorbed paper segment are located on the paper output side of the first adsorption mechanism 3, and the paper segment adjacent to the paper segment on the second adsorption mechanism 4 moves to the first adsorption mechanism 3.

[0042] The motion platform 5 is used to drive the second adsorption mechanism 4 to cyclically move to the first position and the second position;

[0043] The cutting mechanism 6 is provided at the paper output side of the first adsorption mechanism 3 , and is used for cutting the paper segment on the first adsorption mechanism 3 and the paper segment on the second adsorption mechanism 4 located at the second position.

[0044] As described above, the guide roller mechanism 2 is used to guide or support the thin paper 1 along a specific path. The guide roller mechanism 2 operates primarily based on the principle of rolling friction. When the thin paper 1 contacts and moves with the guide roller mechanism 2, the guide roller mechanism 2 rotates freely. The first suction mechanism 3 and the second suction mechanism 4 are used to suction and convey the thin paper 1. When the first suction mechanism 3 suctions the thin paper 1, the thin paper 1 is relatively fixed to the first suction mechanism 3. When the second suction mechanism suctions the thin paper 1, the thin paper 1 is relatively fixed to the second suction mechanism 4. The paper suction side of the first suction mechanism 3 refers to the side of the first suction mechanism 3 that directly contacts and suctions the thin paper 1. The paper discharge side of the first suction mechanism 3 refers to the side of the first suction mechanism 3 that moves the thin paper out of the first suction mechanism 3. The motion platform 5 is used to facilitate the movement of the second suction mechanism 4. The motion platform 5 in this embodiment will be described in detail later. The cutting mechanism 6 is used to cut the thin paper 1. During cutting, the cutting mechanism 6 separates adjacent paper segments 11 along the dividing line between them.

[0045] Specifically in this embodiment, the axis of the guide roller mechanism 2 extends in the vertical direction, and multiple guide roller mechanisms 2 drive the thin paper 1 to move in the horizontal plane. The adsorption surfaces of the first adsorption mechanism 3 and the second adsorption mechanism 4 are both vertical planes, and the moving platform 5 drives the second adsorption mechanism 4 to move in the horizontal plane.

[0046] The following describes a method for cutting thin paper in this embodiment, which includes the following steps:

[0047] A method for cutting thin paper comprises the following steps:

[0048] S1. Provide the above-mentioned cutting equipment and proceed to step S2;

[0049] S2, the end of the paper segment 11 of the thin paper 1 is positioned at the location of the first adsorption mechanism 3, and the process proceeds to step S3;

[0050] S3, the first adsorption mechanism 3 starts the adsorption function, adsorbs the last paper segment 11, and enters step S4;

[0051] S4, placing the second adsorption mechanism 4 in the first position, and proceeding to step S5;

[0052] S5, the first adsorption mechanism 3 turns off the adsorption function, and the second adsorption mechanism 4 turns on the adsorption function to adsorb the last paper segment 11, and then proceeds to step S6;

[0053] S6: The guide roller mechanism 2 drives the thin paper to move so that the next-end paper segment moves to a position where it can be adsorbed by the first adsorption mechanism 3. At the same time, the motion platform 5 drives the second adsorption mechanism 4 to move to the second position, and the process proceeds to step S7.

[0054] S7, the first adsorption mechanism 3 starts the adsorption function, and proceeds to step S8;

[0055] S8, the cutting mechanism 6 cuts the second end paper segment on the first adsorption mechanism 3 and the end paper segment on the second adsorption mechanism 4 at the second position, and then proceeds to step S9;

[0056] S9. Determine whether the thin paper cutting is completed. If so, the cutting is completed. If not, the motion platform 5 drives the second adsorption mechanism 4 after transferring the paper segment away or another empty second adsorption mechanism 4 to move to the first position, and return to step S5.

[0057] In step S4 above, the last segment 11 of the tissue paper 1 is manually pulled to the position of the first suction mechanism 3. In step S9, the segment 11 on the second suction mechanism 4 is moved away and then returned to the first position, or another second suction mechanism 4 is moved to the first position. The segment closest to the outer end of the tissue paper roll is the last segment, and the segment next closest to the outer end of the tissue paper roll is the next-to-last segment. As the tissue paper is cut, the last and next-to-last segments of the tissue paper continuously change.

[0058] Through the above technical solution, when cutting thin paper, the two paper segments on both sides of the cutting position are respectively adsorbed on the first adsorption mechanism 3 and the second adsorption mechanism 4, which can ensure that the thin paper 1 is flat on the first adsorption mechanism 3 and the second adsorption mechanism 4, ensuring that the thin paper 1 will not be wrinkled during cutting, thereby improving the cutting accuracy of the thin paper.

[0059] In this embodiment, each of the guide roller mechanisms 2 includes a guide roller 21, which is used to tension the thin paper. At least one of the guide roller mechanisms 2 also includes a first driving device 22, which is used to drive at least one of the guide rollers 21 to rotate to drive the thin paper to move.

[0060] The guide rollers 21 tension the paper, and friction transmission is generated between them. The first drive device 22 rotates the guide rollers 21, further frictionally driving the paper forward. Some of the guide rollers 21 rotate passively, driven by friction from the paper, to tension and guide the paper. In this embodiment, the first drive device 22 utilizes a servo motor, which offers advantages such as high control precision, fast response, high reliability, flexible control methods, high efficiency, and low noise.

[0061] In this embodiment, the guide roller mechanism 2 closest to the first adsorption mechanism 3 includes the first driving device 22 .

[0062] Since the thin paper 1 is flexible, it is necessary to transport the thin paper 1 by pulling it to move. The guide roller 21 closest to the first adsorption mechanism 3 is closer to the free end of the thin paper 1, which is more conducive to pulling the thin paper 1 forward.

[0063] In this embodiment, at least one of the guide roller mechanisms 2 further includes a position detection element 23 and a second drive device 24. The position detection element 23 is used to detect the position of the side edge of the thin paper 1, and the second drive device 24 is used to drive at least one of the guide rollers 21 to move axially to correct the deviation of the thin paper 1.

[0064] During the conveying process of thin paper 1, detecting and controlling the side edge position of the thin paper 1 is a crucial step. It is essential to ensure that the thin paper 1 maintains the correct position and orientation during conveyance, preventing it from straying or skewing, and thus avoiding deviations and waste during subsequent processing. In this embodiment, the position detection element 23 utilizes an optical sensor to detect the side edge position of the thin paper 1. When the side edge position of the thin paper 1 deviates, the second drive device 24 drives the guide roller 21 axially, thereby adjusting the side edge position of the thin paper 1. In this embodiment, the second drive device 24 utilizes an electric cylinder. An electric cylinder is a modular product that integrates a servo motor and a lead screw. The electric cylinder primarily consists of a motor, lead screw, nut, slider, and guide rail. The motor is connected to the lead screw via a coupling. When the motor is energized, it rotates the lead screw, driving the nut, which is mated to the lead screw, to perform linear motion along the lead screw's axis. The nut, through the connecting components, then drives the slider to perform linear reciprocating motion on the guide rail, thereby achieving linear motion of the load. Therefore, the electric cylinder also possesses the advantages of a servo motor.

[0065] In this embodiment, the two guide roller mechanisms 2 include the second driving device 24 .

[0066] During deflection correction, the second drive device 24 drives the guide roller 21 in axial motion. Friction between the guide roller 21 and the tissue paper causes the tissue paper to move axially along the guide roller 21. In some cases, the guide roller 21 and the tissue paper may slip, resulting in deflection correction failure. Therefore, during deflection correction, the simultaneous axial movement of both guide rollers 21 allows for a section of tissue paper to be corrected simultaneously, preventing deflection correction failures and improving the success rate of deflection correction.

[0067] In this embodiment, at least one of the guide roller mechanisms 2 further includes a tension detection element (not shown in the figure) and a third drive device 25. The tension detection element is used to detect the tension of the thin paper 1, and the third drive device 25 is used to drive at least one of the guide rollers 21 to move radially to adjust the tension of the thin paper 1.

[0068] When the tension on the thin paper 1 is too great, the thin paper 1 is prone to breakage. When the tension on the thin paper 1 is too low, the thin paper 1 and the guide roller 21 may slip. Therefore, the tension on the thin paper 1 needs to be controlled within an appropriate range. The tension detection element is a tension sensor, which is mounted on the guide roller 21. The tension of the thin paper 1 is obtained by sensing the pressure exerted on the thin paper 1. For example, a strain gauge tension sensor uses a strain gauge to sense the deformation of the sensor body caused by the object being measured, converts the force change into an electrical signal, and after amplification and processing by a transmission circuit, outputs an electrical signal proportional to the tension. The third drive device 25 in this embodiment uses, for example, an electric cylinder. The structure of the electric cylinder has been described above and will not be repeated here.

[0069] In this embodiment, the two guide roller mechanisms 2 include the third driving device 25 .

[0070] When adjusting the tension of the tissue paper 1, the third drive device 25 drives the guide roller 21 to move radially. This causes a sudden increase in tension at the point where the tissue paper 1 contacts the radially moving guide roller 21, potentially causing the tissue paper 1 to break. Therefore, by providing simultaneous radial movement of both guide rollers 21, the radial movement amplitude of the guide rollers 21 can be reduced, and the force applied to the tissue paper 1 is more even, making the tissue paper 1 less susceptible to breakage.

[0071] In this embodiment, the cutting equipment includes a plurality of the second adsorption mechanisms 4, the moving platform 5 is a turntable, and the plurality of the second adsorption mechanisms 4 are evenly distributed on the turntable along the circumference of the turntable. The turntable drives the second adsorption mechanisms 4 to move circumferentially, and the first adsorption mechanism 3 is arranged on the radial outside of the turntable.

[0072] Because the second suction mechanism 4 must cycle through the paper suction side and paper delivery side of the first suction mechanism 3, the turntable drives the second suction mechanism 4 to move along a circular trajectory, thereby enabling it to cycle through the paper suction side and paper delivery side of the first suction mechanism 3. The turntable typically has a relatively compact structure, allowing for rotation and manipulation of objects within a limited space. Specifically, the turntable drives the second suction mechanism 4 to rotate about a vertical axis, sequentially passing through the paper suction side and paper delivery side of the first suction mechanism 3.

[0073] When the first second adsorption mechanism 4 reaches the paper output side of the first adsorption mechanism 3 to cut the thin paper, the next second adsorption mechanism 4 reaches the paper adsorption side of the first adsorption mechanism 3 to adsorb the thin paper. By setting multiple second adsorption mechanisms 4, the efficiency of thin paper cutting can be greatly improved.

[0074] Guide rails 51 are provided around the turntable and extend along the axial direction of the turntable. The second adsorption mechanism 4 is connected to the guide rails 51. When the turntable drives the second adsorption mechanism 4 to pass through the paper adsorption side of the first adsorption mechanism 3 and the paper output side of the first adsorption mechanism 3, the second adsorption mechanism 4 will also reach other workstations. At this time, the second adsorption mechanism 4 moves along the guide rails 51 under the drive of the driving device, thereby transferring the thin paper away.

[0075] In this embodiment, the cutting mechanism 6 includes a cutting blade 61 and a fourth driving device 62 . The cutting blade 61 is used to cut the thin paper 1 , and the fourth driving device 62 is used to drive the cutting blade 61 to move closer to and away from the thin paper 1 .

[0076] The cutter 61 has a blade that contacts the thin paper 1 to cut the thin paper 1. The fourth drive device 62 in this embodiment is, for example, an electric cylinder. The structure of the electric cylinder has been described above and will not be repeated here. The fourth drive device 62 in this embodiment drives the cutter 61 along the width of the thin paper 1. Before cutting the thin paper 1, the cutter 61 is positioned above the thin paper 1. During cutting, the cutter 61 moves downward to cut the thin paper 1.

[0077] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A cutting device for thin paper, wherein the thin paper comprises a plurality of paper segments connected in sequence along its length, characterized in that: The cutting equipment includes: A plurality of guide roller mechanisms are used to drive and guide the thin paper to move along a preset path and output a plurality of paper segments of the thin paper in sequence; a first adsorption mechanism, provided on a paper output side of the plurality of guide roller mechanisms, the first adsorption mechanism being used to adsorb paper segments output from the plurality of guide roller mechanisms; A plurality of second adsorption mechanisms are cyclically movable to a first position and a second position. When the second adsorption mechanism is in the first position, the second adsorption mechanism is located on the paper adsorption side of the first adsorption mechanism and can adsorb the paper segment on the first adsorption mechanism. When the second adsorption mechanism is in the second position, the second adsorption mechanism and the adsorbed paper segment are located on the paper output side of the first adsorption mechanism, and the paper segment adjacent to the paper segment on the second adsorption mechanism moves to the first adsorption mechanism. a motion platform, configured to drive the second adsorption mechanism to cyclically move to the first position and the second position, wherein the motion platform is a turntable, the first adsorption mechanism is disposed radially outward of the turntable, the plurality of second adsorption mechanisms are uniformly distributed on the turntable along the circumference of the turntable, and the turntable drives the second adsorption mechanism to circumferentially move; A cutting mechanism is provided on the paper output side of the first adsorption mechanism, the cutting mechanism including a cutting blade and a fourth drive device, the cutting blade being used to cut thin paper, the fourth drive device being used to drive the cutting blade toward and away from the thin paper along the width direction of the thin paper, the cutting mechanism being used to separate the paper segment located on the first adsorption mechanism from the paper segment located on the second adsorption mechanism at the second position.

2. The cutting device according to claim 1, characterized in that Each guide roller mechanism includes a guide roller, and the guide roller is used to tension the thin paper. At least one guide roller mechanism also includes a first driving device, and the first driving device is used to drive at least one guide roller to rotate to drive the thin paper to move.

3. The cutting device according to claim 2, characterized in that The guide roller mechanism closest to the first adsorption mechanism includes the first driving device.

4. The cutting device according to claim 2, characterized in that At least one of the guide roller mechanisms further comprises a position detection element and a second driving device, wherein the position detection element is used to detect the position of the side edge of the thin paper, and the second driving device is used to drive at least one of the guide rollers to move axially to correct the deviation of the thin paper.

5. The cutting device according to claim 4, characterized in that The two guide roller mechanisms include the second driving device.

6. The cutting device according to claim 1, characterized in that At least one of the guide roller mechanisms further comprises a tension detection element and a third driving device, wherein the tension detection element is used to detect the tension of the tissue paper, and the third driving device is used to drive at least one of the guide rollers to move radially to adjust the tension of the tissue paper.

7. The cutting device according to claim 6, characterized in that The two guide roller mechanisms include the third driving device.

8. A method for cutting thin paper, characterized in that: The steps include: S1. Provide the cutting device according to any one of claims 1 to 7, and proceed to step S2; S2, placing the last end of the tissue paper at a position where it can be adsorbed by the first adsorption mechanism, and proceeding to step S3; S3, the first adsorption mechanism starts the adsorption function, adsorbs the last paper segment, and enters step S4; S4, placing the second adsorption mechanism in the first position, and proceeding to step S5; S5, the first adsorption mechanism turns off the adsorption function, and the second adsorption mechanism turns on the adsorption function to adsorb the last paper segment, and then proceeds to step S6; S6. The guide roller mechanism drives the thin paper to move so that the next-end paper segment moves to a position where it can be adsorbed by the first adsorption mechanism. At the same time, the motion platform drives the second adsorption mechanism to move to a second position, and the process proceeds to step S7. S7, the first adsorption mechanism starts the adsorption function, and the process proceeds to step S8; S8, the cutting mechanism separates the second-end paper segment on the first adsorption mechanism from the last paper segment on the second adsorption mechanism at the second position, and the second-end paper segment becomes the new last paper segment, and the process proceeds to step S9; S9. Determine whether the thin paper cutting is completed. If so, the cutting is completed. If not, the motion platform drives the second adsorption mechanism after transferring the paper segment away or another empty second adsorption mechanism to move to the first position, and return to step S5.

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