Modular design paper splitting machine

Abstract

The application relates to the technical field of paper slitting equipment, and particularly provides a modularly designed paper slitting machine, which comprises a rack, a pay-off roller rotatably arranged on the rack, paper to be slit is wound around the outer periphery of the pay-off roller, a plurality of conveying rollers and a conveying assembly are arranged on the rack, and the conveying assembly can make the slit paper curve upward on both sides when conveying the slit paper. The mode can limit the upward and downward bending of the front end of the paper, avoids downward folding or upward warping of the front end in the conveying process, the curved parts on both sides of the slit paper automatically recover flatness under the action of gravity when the slit paper reaches a preset position, folding and creases are avoided in stacking, the stacking volume is greatly reduced, the stacking flatness and compactness are improved, and the stacking quality of the slit paper is improved.

Description

Technical Field

[0001] This invention relates to the field of paper slitting equipment technology, and in particular to a modularly designed paper slitting machine. Background Technology

[0002] A paper slitting machine is a paper processing device that cuts wide rolls of paper into rolls of varying widths and diameters. It is widely used in the paper processing industry and as pre- and post-press machinery.

[0003] For example, Chinese patent CN209177700U discloses a roll paper slitting machine. The solution includes a frame and an unwinding mechanism, a paper cutting mechanism, a paper feeding mechanism, and a paper collecting mechanism installed sequentially on the frame. The paper cutting mechanism includes several longitudinal cutting rollers rotatably mounted on the frame and two transverse cutting rollers that are vertically opposite each other. The roll of paper passes horizontally through the gap between the two transverse cutting rollers via several paper transfer rollers. The side circumferential surfaces of the longitudinal cutting rollers abut against the horizontal paper. Cutting blades are provided on the side circumferential surfaces of the two transverse cutting rollers along the axial direction of the transverse cutting rollers. When the cutting blades of the two transverse cutting rollers rotate to abut, the blades of the two cutting blades abut against each other and cut the paper. The cut paper is collected and stacked by the paper collecting mechanism.

[0004] However, during the process of feeding the paper to the designated position and stacking it together, the front end of the cut paper is prone to curling, which makes the paper easy to fold when it reaches the designated position, resulting in an increase in the volume of the stack. If the front end of the paper bends upward, the impact is not significant, but if the front end of the paper bends downward, it will cause the front end of the paper to fold, affecting the flatness of the subsequent stacking and resulting in poor overall stacking quality. Summary of the Invention

[0005] Therefore, it is necessary to provide a modular paper slitting machine to address the problem of poor stacking quality caused by bending during the current paper stacking process after slitting.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A modular paper slitting machine includes:

[0008] A frame on which multiple parallel conveyor rollers are rotatably mounted for conveying paper;

[0009] An unwinding roller is rotatably mounted on a frame and parallel to multiple conveying rollers, and the paper is wrapped around the outer periphery of the unwinding roller.

[0010] The slitting assembly includes an upper slitting blade and a lower slitting blade, wherein the upper slitting blade is vertically slidably mounted on the frame;

[0011] A conveying assembly is used to convey the slit paper. The conveying assembly is configured to convey the slit paper to a preset position after it has been slit, with both sides bent upwards.

[0012] Furthermore, the conveying assembly includes a conveying plate and two rotating rollers. The conveying plate is fixedly connected to the upper slitting blade. The ends of the two rotating rollers that are close to each other are rotatably connected to the middle position of the conveying plate, and the ends of the two rotating rollers that are far apart from each other are rotatably connected to both ends of the conveying plate. The horizontal position of the ends of the two rotating rollers that are close to each other is lower than the horizontal position of the ends of the two rotating rollers that are far apart from each other.

[0013] Furthermore, the ends of the two rotating rollers that are close to each other are located on the front side in the paper conveying direction, and the ends of the two rotating rollers that are far apart from each other are located on the rear side in the paper conveying direction.

[0014] Furthermore, the diameter of the end of the two rotating rollers that is close to each other is smaller than the diameter of the end of the two rotating rollers that is far from each other, and there is a smooth curved transition between the large end and the small end of the two rotating rollers.

[0015] Furthermore, the conveyor plate is provided with a drive assembly, which is used to drive two rotating rollers to rotate around their own axis.

[0016] Furthermore, the drive assembly includes a drive motor, a transmission wheel, a first universal joint, and a second universal joint. The drive motor is fixedly mounted on the conveyor plate, and the drive motor shaft is connected to the transmission wheel. The transmission wheel is coaxial with and fixedly connected to one end of the first universal joint. The other end of the first universal joint is coaxial with and fixedly connected to the ends of the rotating rollers that are far apart from each other. One end of the second universal joint is rotatably positioned in the middle of the conveyor plate, and the other end of the second universal joint is coaxial with and fixedly connected to the ends of the rotating rollers that are close to each other.

[0017] Furthermore, a transmission belt is wound around the outer periphery of the transmission wheel and the outer periphery of the drive motor.

[0018] Furthermore, the frame is provided with two flattening rollers, which are arranged one above the other and close to the lower slitting blade. The two flattening rollers roll in contact with the upper and lower surfaces of the paper to be slit.

[0019] Furthermore, the outer periphery of the upper flattening roller is provided with two spiral protrusions. The two spiral protrusions are symmetrical about the middle position of the length of the upper flattening roller. The two spiral protrusions can push the paper to be cut to flatten to both sides.

[0020] Furthermore, a spreading plate is provided on the frame, which is located between the upper spreading roller and the lower slitting blade, and the lower surface of the spreading plate slides in contact with the upper surface of the paper to be slid.

[0021] The beneficial effects of this invention are:

[0022] This invention features a conveying component that allows the slit paper to bend upwards on both sides during transport. This shape restricts the bending of the front end of the paper, preventing it from folding downwards or warping upwards during transport. When the slit paper reaches a preset position, the bent portions on both sides automatically return to flatness under gravity, resulting in no folds or wrinkles during stacking. This significantly reduces the stacking volume, improves the flatness and compactness of the stack, and enhances the stacking quality of the slit paper.

[0023] This invention employs two tilted rotating rollers with different diameters at their ends, connected by a smooth curved surface. This design prevents wrinkles from forming on the slit paper during transport, ensuring the paper exhibits a weaker bending at the front and a stronger bending at the rear. The larger front opening area and stronger buoyancy allow the paper to be transported to a more distant, preset position, reducing the probability of it falling or shifting during transport. Simultaneously, the arc-shaped contact surface between the rotating rollers and the paper reduces friction loss, prevents scratches on the paper surface, and improves the yield rate.

[0024] This invention features two flattening rollers arranged vertically on a frame, with two symmetrical spiral protrusions on the outer periphery of the upper flattening roller. These two spiral protrusions can push the paper to be cut to flatten to both sides, preventing wrinkles from forming on the paper perpendicular to the conveying direction. At the same time, the two flattening rollers arranged vertically can also prevent wrinkles from forming on the paper in the conveying direction, thus improving the flatness of the paper before cutting.

[0025] This invention sets up a flat plate, with the gap between the flat plate and the support aligned with the blade of the lower slitting knife. The conveyor plate is fixedly connected to the upper slitting knife. When the upper slitting knife moves up and down, it synchronously drives the conveyor plate to adjust its height, ensuring that the paper is cut horizontally. This avoids uneven paper cutting edges or jamming during conveying due to height misalignment, further guaranteeing stacking quality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a modular paper slitting machine provided in an embodiment of the present invention;

[0027] Figure 2 This is a side sectional view of a modular paper slitting machine provided in an embodiment of the present invention;

[0028] Figure 3 for Figure 2 A partially enlarged view of part X of the modular paper slitting machine provided in one embodiment;

[0029] Figure 4 This is a partial structural schematic diagram of a modular paper slitting machine provided in an embodiment of the present invention;

[0030] Figure 5 for Figure 4 Left view of a modular paper slitting machine provided in one embodiment;

[0031] Figure 6 for Figure 5 A cross-sectional view along AA of a modular paper slitting machine provided in one embodiment;

[0032] Figure 7 for Figure 6 A partially enlarged view of the Y section of a modular paper slitting machine provided in one embodiment;

[0033] Figure 8 for Figure 5 A cross-sectional view along BB of a modular paper slitting machine provided in one embodiment;

[0034] Figure 9 for Figure 8 A partially enlarged view of the Z part of the modular paper slitting machine provided in one embodiment.

[0035] in:

[0036] 100. Frame; 110. Unwinding roller; 120. Conveyor roller; 130. Upper slitting cutter; 140. Lower slitting cutter; 150. Flattening roller; 151. Spiral protrusion; 160. Flattening plate; 170. Tensioning roller; 180. Tensioning rod; 190. Stacking platform;

[0037] 200. Conveyor plate; 210. Rotating roller; 220. Drive motor; 230. Transmission wheel; 231. Transmission belt; 240. First universal joint; 250. Second universal joint; 260. Rotating sleeve;

[0038] 300. Paper to be cut. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0040] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] The following reference Figures 1-9 This invention describes a modular paper slitting machine.

[0043] A modular paper slitting machine, suitable for paper slitting and stacking, includes a frame 100. A unwinding roller 110 is rotatably mounted on the frame 100, with coils of paper 300 to be slit wrapped around its outer circumference. Multiple parallel conveyor rollers 120 are rotatably mounted on the frame 100, conveying the paper 300 to be slit and positioning it for slitting. A slitting assembly is mounted on the frame 100 to slit the paper 300. The slitting assembly includes an upper slitting blade 130 and a lower slitting blade 140, with the lower slitting blade 140 fixedly mounted on the frame 100. The upper slider 130 is vertically slidably mounted on the frame 100. The upper slider 130 can move up and down to approach or move away from the lower slider 140. The paper 300 to be slit will pass between the upper slider 130 and the lower slider 140. When the length that the paper 300 to be slit has passed reaches the required length, the upper slider 130 quickly moves down to approach the lower slider 140 and then slits the paper 300. The slit paper needs to be transported to a preset position. The preset position refers to the position where the slit paper is transported and stacked, which is usually the stacking platform 190 on one side of the frame 100. As subsequent papers 300 to be slit are continuously slit, the slit paper is gradually stacked on the stacking platform 190.

[0044] In the process of conveying the slit paper to the stacking platform 190, the front end of the slit paper is prone to curling, which makes the paper easy to fold when it arrives at the stacking platform 190, resulting in an increase in the stacked volume. If the front end of the paper bends upward, the impact is not significant, as the upward-bent part can automatically recover its flatness under the action of gravity. However, if the front end of the paper bends downward, it will cause the front end of the paper to fold, affecting the flatness of the subsequent stacking and resulting in poor overall stacking quality.

[0045] Based on this, the present invention provides a conveying component on the frame 100. When conveying the slit paper, the conveying component can convey the paper to the stacking platform 190 with both sides bent upwards. When both sides of the paper are bent upwards, the paper forms an arc-shaped surface. The paper cannot be bent or folded in the conveying direction, so that the front end of the paper will not bend upwards or downwards during the conveying process. This is because the bending of both sides of the paper restricts the vertical bending of the front end. When the paper leaves the conveying component, the upward-bent parts on both sides will return to a flat state under the action of its own gravity. The same applies to the paper that is subsequently conveyed. These papers will not fold when stacked, thereby avoiding the situation where the paper volume is too large when stacked, and improving the quality of paper stacking.

[0046] Specifically, the conveying assembly in this embodiment of the invention includes a conveying plate 200 and two rotating rollers 210, such as... Figure 2 and Figure 3 As shown, the conveyor plate 200 is fixedly connected to the upper slitting blade 130. When the upper slitting blade 130 moves upward, it synchronously drives the conveyor plate 200 to move upward; when the upper slitting blade 130 moves downward, it synchronously drives the conveyor plate 200 to move downward. Two rotating rollers 210 are rotatably mounted on the conveyor plate 200. The ends of the two rotating rollers 210 that are close to each other are rotatably connected to the middle position of the conveyor plate 200, and the ends of the two rotating rollers 210 that are far apart are rotatably connected to both ends of the conveyor plate 200. The horizontal position of the ends of the two rotating rollers 210 that are close to each other is lower than the horizontal position of the ends of the two rotating rollers 210 that are far apart. The two rotating rollers 210 are positioned horizontally away from one end, so that they form a V-shaped groove on the vertical plane. The two rotating rollers 210 can rotate around their own axis (the direction of rotation is the same as the paper feeding direction). When the cut paper falls on the two rotating rollers 210, the lower surface of the paper will contact the two rotating rollers 210 under the action of gravity. At this time, the paper forms a state of being concave in the middle and curved upward on both sides. As the two rotating rollers 210 rotate, the paper is fed in this state. During the feeding process, the front end of the paper will not bend up and down, thus avoiding the paper folding.

[0047] It should be noted that when the upper slitting blade 130 moves downwards and approaches the lower slitting blade 140, the highest horizontal position of the two rotating rollers 210 on the conveyor plate 200 at their far ends is parallel to the highest horizontal position of the lower slitting blade 140. This ensures that the paper is in a horizontal state when being cut, and prevents the cutting position of the paper 300 to be cut from intersecting with the highest positions of the two rotating rollers 210. If they intersect, the paper 300 to be cut will become uneven.

[0048] It should also be noted that in the prior art, paper slitting machines may still cause paper wrinkles during the conveying process after slitting. To avoid paper wrinkles during conveying, this invention tilts the two rotating rollers 210 in the paper conveying direction, so that the ends of the two rotating rollers 210 that are close to each other are located on the front side in the paper conveying direction, while the ends of the two rotating rollers 210 that are far apart are located on the rear side in the paper conveying direction. This makes the two rotating rollers 210 form a V-shaped groove on the horizontal plane, with the opening facing the opposite direction of the paper conveying direction. When the two rotating rollers 210 rotate, they will give the paper a flattening force.

[0049] It is understandable that, since the two rotating rollers 210 form a V-shaped groove on the horizontal plane, when the two rotating rollers 210 rotate, they will give the two sides of the paper a force that moves away from each other. This force can flatten the wrinkles on the paper or prevent the paper from forming wrinkles during the transport process, ensuring that the paper does not form wrinkles when it is transported to the stacking platform 190.

[0050] In a further embodiment, the diameter of the end of the two rotating rollers 210 that is close to each other is set to be smaller than the diameter of the end of the two rotating rollers 210 that is far from each other, and the large end and the small end of the two rotating rollers 210 are connected by a smooth curved surface, so that the outer periphery of the two rotating rollers 210 is an arc-shaped curved surface, so that the linear velocity of the two rotating rollers 210 at different positions on their outer periphery is different when the two rotating rollers 210 rotate at the same speed. This results in a speed difference at different contact positions when the two rotating rollers 210 come into contact with the slit paper, which can smooth out the fine wrinkles on the paper and reduce the friction between the two rotating rollers 210 and the paper while smoothing out the fine wrinkles.

[0051] It should be noted that the inclined arrangement of the two rotating rollers 210 in this embodiment forms a V-shaped groove on the vertical plane with the opening facing upwards, and also forms a V-shaped groove on the horizontal plane, but the opening direction is opposite to the paper conveying direction. During the conveying process of the two rotating rollers 210, the paper forms a state with both sides facing upwards, and the degree of curvature of the front end of the paper gradually becomes less than that of the rear end after passing through the two rotating rollers 210. This is because the cut paper is continuously conveyed. When the front end of the cut paper passes through the two rotating rollers 210, the degree of curvature is greater. As the front end of the cut paper passes over the two rotating rollers 210, the front end of the cut paper is no longer restricted by the two rotating rollers 210, thus reducing the degree of curvature. At this time, the degree of curvature of the rear end of the cut paper is greater than that of the front end. When the paper is conveyed in this state, the lower surface of the front end of the paper has a larger open area, thus receiving greater buoyancy, allowing the paper to be conveyed to a greater distance without folding.

[0052] Specifically, in this embodiment, the conveyor plate 200 is equipped with a drive assembly for driving two rotating rollers 210 to rotate around their own axes. The drive assembly includes a drive motor 220, a transmission wheel 230, a first universal joint 240, and a second universal joint 250. There are two drive motors 220, two transmission wheels 230, two first universal joints 240, and two second universal joints 250. The two drive motors 220 are fixedly mounted on both ends of the conveyor plate 200, and the two transmission wheels 230 are rotatably connected to both ends of the conveyor plate 200. The shafts of the two drive motors 220 are respectively connected to the two transmission wheels 230. When the two drive motors 220 rotate, they can drive the two transmission wheels 230 to rotate synchronously. The two first universal joints 240... One end of each of the two first universal joints 240 is coaxially and fixedly connected to the two transmission wheels 230. The other ends of the two first universal joints 240 are coaxially and fixedly connected to the two rotating rollers 210 at their respective ends that are far apart from each other. One end of each of the two second universal joints 250 is rotatably set at the middle position of the conveyor plate 200, specifically rotatably connected to the middle position of the conveyor plate 200 through a rotating sleeve 260. The other ends of the second universal joints 250 are coaxially and fixedly set at the two rotating rollers 210 at their respective ends that are close to each other. When the two drive motors 220 drive the transmission wheels 230 to rotate, the two first universal joints 240 drive the two rotating rollers 210 to rotate, and the two second universal joints 250 rotate synchronously, thereby enabling the two rotating rollers 210 to rotate around their own axes.

[0053] More specifically, such as Figure 8 and Figure 9 As shown, in this embodiment, a transmission belt 231 is wound around the outer periphery of the transmission wheel 230 to drive the shaft of the drive motor 220. Specifically, the outer periphery of the transmission wheel 230 and the outer periphery of the shaft of the drive motor 220 are both wound with a transmission belt 231. When the drive motor 220 rotates, the transmission belt 231 drives the transmission wheel 230 to rotate, thereby driving the two rotating rollers 210 to rotate around their own axes.

[0054] In a further embodiment, the frame 100 of the present invention is provided with two flattening rollers 150, such as... Figure 2 and Figure 3As shown, two flattening rollers 150 are arranged vertically, close to the lower slitting blade 140, specifically on the left side of the lower slitting blade 140. The paper 300 to be cut is allowed to pass between the two flattening rollers 150. The two flattening rollers 150 roll in contact with the upper and lower surfaces of the paper 300 to be cut, respectively. The two flattening rollers 150 are powered by a power source (not shown in the figure), which drives the two flattening rollers 150 to rotate, thereby conveying the paper 300 to be cut between the lower slitting blade 140 and the upper slitting blade 130. The plane on which the paper 300 to be cut is conveyed by the two flattening rollers 150 is exactly flush with the uppermost blade of the lower slitting blade 140, so that the paper 300 to be cut can be conveyed flat between the upper slitting blade 130 and the lower slitting blade 140, avoiding wrinkles or unevenness of the paper 300 to be cut in the conveying direction.

[0055] Specifically, in this embodiment, the outer periphery of the upper flattening roller 150 is provided with two spiral protrusions 151, such as... Figure 6 As shown, the two spiral protrusions 151 are symmetrical about the middle position of the length of the upper flattening roller 150. The two spiral protrusions 151 have opposite directions of rotation and can apply a stretching force to both sides to the paper 300 to be cut, so that the paper 300 to be cut conveyed by the flattening roller 150 is flattened, avoiding wrinkles or unevenness of the paper 300 to be cut in the direction perpendicular to the conveying direction.

[0056] Specifically, in this embodiment, to ensure that the paper 300 to be cut can be cut more evenly, a spreading plate 160 is also provided on the frame 100, such as... Figure 3 As shown, the spreading plate 160 is located between the upper spreading roller 150 and the lower slitting blade 140. A gap is formed between the spreading plate 160 and the frame 100, which allows the paper 300 to be slit to pass through. The plane of the gap is flush with the plane on which the two spreading rollers 150 transport the paper 300 to be slit, so that the paper 300 to be slit transported by the two spreading rollers 150 can enter the gap between the spreading plate 160 and the frame 100 smoothly, further avoiding wrinkles on the paper 300 to be slit.

[0057] It should be noted that, since the right side of the spreading plate 160 is close to the blade on the lower slitting blade 140 in this embodiment, when the upper slitting blade 130 moves downward to slit the paper, the left side of the paper 300 to be slit will be supported by the spreading plate 160 and the frame 100, thereby making the paper 300 to be slit more evenly and avoiding the situation where the paper deforms due to lack of support during slitting, resulting in uneven paper slit edges.

[0058] In a further embodiment, a damping device (not shown in the figure) is provided at the rotatable connection position between the unwinding roller 110 and the frame 100 in the embodiment of the invention, so that the unwinding roller 110 can only rotate after being pulled by the paper 300 to be cut, thereby avoiding the situation where the paper 300 to be cut becomes loose due to the unwinding roller 110 rotating too fast under the action of inertia.

[0059] It should be noted that the damping can be a damping shaft with multiple friction protrusions on its outer circumference. The unwinding roller 110 is rotatably connected to the outer circumference of the damping shaft. The multiple friction protrusions on the outer circumference of the damping shaft generate friction with the unwinding roller 110, thereby achieving the damping effect. Of course, other damping methods are also possible, which will not be elaborated here.

[0060] Specifically, the frame 100 is also equipped with multiple tension rollers 170, and tension rods 180 are connected to the multiple tension rollers 170, such as... Figure 2 As shown, one end of the tension rod 180 is rotatably connected to the frame 100. A torsion spring (not shown in the figure) is provided at the rotatable connection position between the tension rod 180 and the frame 100. The torsion spring causes the tension rod 180 to have a tendency to swing downward around the rotation center. Multiple tension rollers 170 are rotatably arranged on the tension rod 180. The paper 300 to be cut will pass around the multiple tension rollers 170. Under the action of the torsion spring on the tension rod 180, the multiple tension rollers 170 have a tendency to move downward, thereby tensioning the paper 300 to be cut, improving the flatness of the paper 300 to be cut, and at the same time, facilitating the transport of the paper 300 to be cut.

[0061] The specific working process of a modular paper slitting machine provided by the present invention will be described in conjunction with the above embodiments:

[0062] The paper 300 to be cut, wound on the unwind roller 110, is sequentially passed through multiple conveyor rollers 120, tension rollers 170, and flattening rollers 150, and then through the gap between the flattening plate 160 and the frame 100. The power source (not shown in the figure) is then activated, causing the two flattening rollers 150 to rotate around their own axes. The two flattening rollers 150 pull the paper 300 to be cut, which in turn pulls the unwind roller 110 to rotate, thus initiating a continuous conveying of the paper 300 to be cut. Two drive motors 220 are started. The two drive motors 220 drive two rotating rollers 210 to rotate around their own axes through transmission wheel 230 and two first universal joints 240. The frequency of the reciprocating up and down movement of the upper slitting blade 130 is adjusted so that when the upper slitting blade 130 moves down to the lower slitting blade 140, the length of the paper 300 to be cut is the required length. When the upper slitting blade 130 moves down to contact the paper 300 to be cut, it continues to move down to cut the paper.

[0063] The paper 300 to be cut is flattened to both sides by the two spiral protrusions 151 on the outer periphery of the flattening roller 150 located above, thus preventing wrinkles from forming on the paper 300 perpendicular to the conveying direction. Figure 3 As shown, when the upper slitting blade 130 moves downward, it will drive the conveyor plate 200 to move downward synchronously. At this time, the right side of the paper to be slit will move downward synchronously with the conveyor plate 200 under the action of gravity and become parallel to the left side. At this time, the left side of the paper to be slit is supported by the unfolding plate 160 and the frame 100, so the slit edge of the paper is relatively flat during slitting, which improves the slitting quality of the paper.

[0064] After the paper 300 to be cut is cut by the upper cutting blade 130 and the lower cutting blade 140, the cut paper is conveyed by two rotating rollers 210 that rotate around their own axes, thus moving towards the stacking platform 190. When the rotating rollers 210 convey the cut paper, due to the inclined setting of the two rotating rollers 210, the cut paper forms a state of upward bending on both sides on the two rotating rollers 210, so that the front end of the cut paper will not bend up and down during the conveying process. Furthermore, due to the different diameters at both ends of the two rotating rollers 210 and the effect of the smooth curved surface, the linear velocity of the outer periphery of the two rotating rollers 210 at the middle position and the two sides of the paper is different, so that the cut paper can be subjected to a force towards both sides. Moreover, the difference in linear velocity between different positions on the outer periphery of the rotating rollers 210 can flatten out fine wrinkles, thereby reducing the relative friction between the cut paper and the two rotating rollers 210 during the conveying process and avoiding wear on the lower surface of the cut paper. During transport, the paper that passes over the two rotating rollers 210 is freed from their constraints, resulting in a smaller degree of curvature at the front end compared to the rear end. At this time, the buoyancy force on the front end of the paper is greater than that on the rear end, thereby reducing the degree to which the front end of the paper tilts downwards under the influence of gravity and increasing the transport distance of the paper.

[0065] After the slit paper is conveyed to the stacking platform 190, it stops. Subsequent papers will also be conveyed to the stacking platform 190 and stacked together. Since the slit paper hardly folds, the stacked slit paper takes up less space, which improves the stacking quality of the slit paper.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A modular paper slitting machine, characterized in that, include: A frame on which multiple parallel conveyor rollers are rotatably mounted for conveying paper; An unwinding roller is rotatably mounted on a frame and parallel to multiple conveying rollers, and the paper is wrapped around the outer periphery of the unwinding roller. The slitting assembly includes an upper slitting blade and a lower slitting blade, wherein the upper slitting blade is vertically slidably mounted on the frame; A conveying assembly for conveying the slit paper, the conveying assembly being configured to convey the slit paper to a preset position after the paper to be slit is slit, with both sides bent upwards. The conveying assembly includes a conveying plate and two rotating rollers. The conveying plate is fixedly connected to the upper slitting blade. The two rotating rollers are rotatably connected to the middle position of the conveying plate at their close ends and to the two ends of the conveying plate at their far ends. The horizontal position of the two rotating rollers at their close ends is lower than the horizontal position of the two rotating rollers at their far ends. The two rotating rollers are located at the front side in the paper feeding direction at one end that is close to each other, and at the rear side in the paper feeding direction at the other end that is far apart from each other. The diameter of the end of the two rotating rollers that is close to each other is smaller than the diameter of the end of the two rotating rollers that is far apart from each other, and there is a smooth curved transition between the large end and the small end of the two rotating rollers.

2. The modular paper slitting machine according to claim 1, characterized in that, The conveyor plate is equipped with a drive assembly, which is used to drive two rotating rollers to rotate around their own axis.

3. The modular paper slitting machine according to claim 2, characterized in that, The drive assembly includes a drive motor, a transmission wheel, a first universal joint, and a second universal joint. The drive motor is fixedly mounted on the conveyor plate, and the drive motor shaft is connected to the transmission wheel. The transmission wheel is coaxial with and fixedly connected to one end of the first universal joint. The other end of the first universal joint is coaxial with and fixedly connected to the ends of the rotating rollers that are far apart from each other. One end of the second universal joint is rotatably positioned in the middle of the conveyor plate, and the other end of the second universal joint is coaxial with and fixedly connected to the ends of the rotating rollers that are close to each other.

4. The modular paper slitting machine according to claim 3, characterized in that, A transmission belt is wound around the outer circumference of the transmission wheel and the outer circumference of the drive motor.

5. The modular paper slitting machine according to claim 1, characterized in that, The frame is equipped with two flattening rollers, which are arranged one above the other and close to the lower slitting blade. The two flattening rollers roll in contact with the upper and lower surfaces of the paper to be slitted.

6. The modular paper slitting machine according to claim 5, characterized in that, The upper flattening roller has two spiral protrusions on its outer periphery. The two spiral protrusions are symmetrical about the middle position of the length of the upper flattening roller. The two spiral protrusions can push the paper to be cut to flatten to both sides.

7. The modular paper slitting machine according to claim 5, characterized in that, The frame is equipped with a flat plate, which is located between the upper flattening roller and the lower slitting blade. The lower surface of the flat plate slides in contact with the upper surface of the paper to be slid.

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