A pinch roller mechanism for a paper cutting conveyor

Abstract

The utility model discloses a kind of paper cutting conveyor's press wheel mechanism, including rack, the transmission roller for conveying paper is provided in the side of rack, the cutting assembly for cutting paper is provided in the other side of rack, transmission roller and cutting assembly form the conveying area to paper between, still include the roller for firm paper transmission being symmetrically arranged in conveying area, the both ends of two groups of rollers are rotatably connected with rack inner wall;The utility model can effectively reduce paper conveying process and run off, deviation, hang and sag, warp and other adverse phenomena, let paper always keep flat tension conveying state, reduce cutting error from source paper walk position deviation, substantially improve paper cutting and cut flatness, size uniformity and overall finished product processing qualification rate, simultaneously, rack partition layout can also isolate driving component vibration interference, further guarantee paper conveying and cutting operation running stability.

Description

Technical Field

[0001] This utility model relates to the field of paper conveying and cutting technology, and more specifically, to a pressure roller mechanism for a paper cutting conveyor. Background Technology

[0002] In the paper printing and packaging process, the formed paper needs to be continuously conveyed and cut to a fixed length. During the conveying and cutting process, the paper must always remain flat and in close contact with the conveying table. If the paper shifts, curls, or becomes loose, it is very easy to cause deviations in the cutting size and uneven cuts, which seriously affects the finished product qualification rate. Therefore, the pressure stabilization limit and adaptability adjustment capabilities of the paper conveying process are key performance indicators of the cutting and conveying equipment.

[0003] Existing traditional paper cutting and conveying equipment generally uses a fixed pressure roller structure to simply press and limit the paper during conveying. It relies solely on a fixed arrangement of pressure rollers to achieve paper bonding and feeding. The structural mode is simple and can only meet the basic conveying and cutting needs of conventional paper sizes.

[0004] In actual operation, the existing traditional pressure roller structure still has obvious shortcomings: On the one hand, most traditional pressure rollers are fixedly installed, which cannot adjust the synchronous spacing of multiple pressure points according to different paper widths and thicknesses. The range of adaptation is narrow, and manual fine-tuning is required when changing paper specifications, which is cumbersome and the adjustment consistency is poor. On the other hand, traditional pressure rollers are mostly installed by fastening bolts, which is very inconvenient to disassemble and replace. The subsequent maintenance is time-consuming and laborious. Moreover, the overall pressure component cannot be moved and adapted to the requirements of the conveying station. Paper is prone to deviation and arching during conveying, which further increases the cutting error and the production stability is poor. Therefore, we urgently need a pressure roller mechanism for paper cutting conveyor to solve the above problems. Utility Model Content

[0005] One objective of this invention is to provide a new technical solution for the pressure roller mechanism of a paper cutting conveyor. By regularly arranging the conveying and cutting stations on the frame, and using roller side limiters and spiral guide grooves to synchronously adjust the roller spacing, and setting a quick-release flexible buffer pressure roller structure, it is possible to achieve stable and limited conveying of paper of different specifications, reduce the problem of deviation and warping, improve cutting accuracy, and at the same time, it is convenient to disassemble and maintain and has stronger overall adaptability.

[0006] According to a first aspect of the present invention, a pressure roller mechanism for a paper cutting conveyor is provided, comprising a frame, a drive roller for conveying paper is provided on one side of the frame, and a cutting assembly for cutting paper is provided on the other side of the frame, wherein a paper conveying area is formed between the drive roller and the cutting assembly, and further comprising rollers symmetrically arranged in the conveying area for stabilizing paper transmission, both ends of the two sets of rollers being rotatably connected to the inner wall of the frame, and a paper feeder is provided between the two sets of rollers, both sides of the paper feeder being connected to the frame via connecting hooks, and a bracket is provided on the paper feeder, wherein a slider is slidably connected to the bracket via an adjusting member; The adjusting component includes partitions symmetrically installed in the bracket. The two sets of partitions form three sets of placement cavities in the bracket. Rotating rods are rotatably connected in each of the three sets of placement cavities. The three sets of rotating rods are connected to each other by connecting shafts to achieve synchronous rotation. The bottom walls of all three placement cavities are provided with sliding grooves for sliding sliders. The sliders are slidably connected in the sliding grooves. There are at least six sliders in each placement cavity. The rotating rod is symmetrically provided with multiple spiral guide grooves along the axial direction. The spiral guide grooves are divided into left-hand spiral sections and right-hand spiral sections with opposite directions of rotation. The ends of the sliders slide in the corresponding left-hand spiral section or right-hand spiral section. When in the rotation zone, the sliders in the three placement cavities are guided by the left-hand spiral section or right-hand spiral section and move along the sliding groove path, forming a synchronous adjustment zone for multiple sliders. The slider is connected to a roller for pressing paper via a quick-release mechanism, and the frame is connected to a support via a drive mechanism.

[0007] Optionally, the driving component includes guide frames symmetrically mounted on the frame. A hydraulic cylinder is fixedly mounted on the inner wall of the guide frame by a fixing member. A movable plate is slidably connected in the guide groove of the guide frame. The movable plate is connected to the corresponding side of the support. The output end of the hydraulic cylinder is connected to the movable plate. When the hydraulic cylinder drives the movable plate to move, the support moves along the path of the guide groove to form a moving area for the roller.

[0008] Optionally, a drive motor is fixedly connected to the bracket, a first rotating wheel is provided on the bracket, the first rotating wheel is connected to the end of the corresponding rotating rod, a second rotating wheel is fixedly connected to the output end of the drive motor, and the first rotating wheel and the second rotating wheel are connected by belt drive. When the drive motor drives the first rotating wheel and the second rotating wheel to rotate through the belt, the three sets of rotating rods rotate accordingly and form a rotation area.

[0009] Optionally, the quick-release component includes a piston cylinder fixedly installed at the bottom of the slider, a slide rod slidably connected inside the piston cylinder, a rectangular block fixedly installed at the end of the slide rod, a spring sleeved on the piston cylinder, the two ends of the spring respectively abutting against the surfaces of the slider and the rectangular block to form a buffer zone, an insertion hole is opened in the middle of the rectangular block, the inner wall of the insertion hole is provided with a toothed groove for limiting the position, a cap coaxial with the insertion hole is fixedly installed on the rectangular block, and a magnetic ring is fixedly installed inside the cap.

[0010] Optionally, the rectangular block has a threaded groove that communicates with the insertion hole, and a clamping rod is threadedly connected to the threaded groove. The end of the clamping rod is fixedly connected to a toggle ring for turning.

[0011] Optionally, the roller's support bracket is integrally formed with a plug rod that matches the insertion hole. The plug rod is provided with a toothed ring that matches the toothed groove. A magnetic block that matches the magnetic ring is fixedly installed at the end of the plug rod. When the plug rod is inserted into the insertion hole, the toothed ring meshes with the toothed groove, and the magnetic block and the magnetic ring magnetically attract each other to form a fixed area. When in the fixed area, the actuating ring is rotated to move the clamping rod along the threaded groove and clamp it against the plug rod to form a locking area.

[0012] Optionally, the roller is covered with a rubber pad for flexible cushioning.

[0013] Beneficial effects

[0014] 1. This utility model uses a frame-type machine as the overall load-bearing foundation, and divides the transmission rollers and cutting components into separate and orderly paper conveying areas. At the same time, symmetrical rollers are set on both sides of the conveying area for lateral limiting, and together with the paper feed board, a flat paper feeding table is formed. The structural layout standardizes the paper conveying line, and can limit, support and guide the paper in the conveying process. It can effectively reduce the deviation, offset, hanging and drooping, warping and wrinkling of paper during the conveying process, so that the paper always maintains a flat and taut conveying state. It reduces the cutting error caused by the paper positioning deviation from the source, and significantly improves the flatness of the cut, the uniformity of the size and the overall finished product processing qualification rate. At the same time, the partitioned layout of the frame can also isolate the vibration interference of the drive components, further ensuring the operational stability of paper conveying and cutting operations.

[0015] 2. This utility model achieves overall adjustment of the paper pressing station by driving the support frame to move horizontally using a hydraulic cylinder. Then, the drive motor, in conjunction with the rotating wheel, belt, and connecting shaft, drives multiple sets of rotating rods to rotate synchronously. The rotational motion is converted into linear sliding of the slider by the forward and reverse spiral guide grooves on the rotating rods, realizing one-button synchronous adjustment of the spacing between multiple sets of rollers. There is no need for manual fine-tuning of each one. The adjustment is highly consistent, and the operation is simple and efficient. It can quickly adapt to the pressing and conveying needs of paper with different widths and thicknesses. At the same time, the quick-release structure with magnetic engagement and threaded clamping allows for tool-free quick disassembly and assembly of the rollers, making later maintenance and replacement more convenient. Combined with the flexible buffer zone composed of piston cylinder, slide rod and spring, and the design of the roller outer rubber pad, it can not only buffer the instantaneous impact force of paper pressing and avoid rigid hard pressure scratching or damaging the paper, but also increase friction to prevent paper slippage during conveying. The overall structure adaptability, adjustment accuracy, ease of use and paper protection performance are greatly improved.

[0016] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0018] Figure 1 This is a front view schematic diagram of the pressure roller mechanism of a paper cutting conveyor in one embodiment; Figure 2 This is a schematic diagram of the overall structure of the pressure roller mechanism of a paper cutting conveyor in one embodiment; Figure 3 This is a front view schematic diagram of the support structure of the pressure roller mechanism of a paper cutting conveyor in one embodiment; Figure 4 This is a schematic diagram of a first partial cross-sectional structure of the pressure roller mechanism of a paper cutting conveyor in one embodiment; Figure 5 This is a schematic diagram of a second partial cross-sectional structure of the pressure roller mechanism of a paper cutting conveyor in one embodiment; Figure 6 As one embodiment, this is a pressure roller mechanism of a paper cutting conveyor. Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a partial cross-sectional view of the pressure roller mechanism of a paper cutting conveyor in one embodiment.

[0019] The diagram shows the following components: 1. Frame; 2. Drive roller; 3. Cutting assembly; 4. Roller; 5. Paperboard feeder; 6. Support; 7. Slider; 8. Roller; 9. Guide frame; 10. Hydraulic cylinder; 11. Moving plate; 12. Partition; 13. Placement cavity; 14. Rotating rod; 15. Drive motor; 16. First rotating wheel; 17. Second rotating wheel; 18. Sliding groove; 19. Spiral guide groove; 20. Piston cylinder; 21. Sliding rod; 22. Rectangular block; 23. Spring; 24. Insertion hole; 25. Gear groove; 26. Cap; 27. Magnetic ring; 28. Threaded groove; 29. ​​Clamping rod; 30. Actuating ring; 31. Insert rod; 32. Gear ring; 33. Magnetic block; 34. Rubber pad. Detailed Implementation

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0021] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0022] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0023] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0024] like Figure 1-7 As shown, a pressure roller mechanism of a paper cutting conveyor includes a frame 1, a drive roller 2 for conveying paper is provided on one side of the frame 1, and a cutting component 3 for cutting paper is provided on the other side of the frame 1. A paper conveying area is formed between the drive roller 2 and the cutting component 3.

[0025] Here, the frame 1 adopts a frame structure of integral casting or profile welding. Its upper surface is milled to form a reference plane and positioning groove for installing each component. This provides a high-precision and stable installation reference for the drive roller 2, the cutting component 3 and all subsequent supporting parts, preventing the components from shaking during operation due to assembly position deviations, and ensuring the straightness of the paper conveying path.

[0026] Furthermore, the conveying area is a suspended straight section that spans above the frame 1 and is defined by the tangential paper exit point of the drive roller 2 and the paper inlet of the cutting component 3. This spatial layout integrates the paper conveying, holding, and transition functions into an independent area, physically isolating the power input and cutting execution actions, so that the paper maintains stable tension on a straight path without interference from other processes.

[0027] Furthermore, the drive motor of the transmission roller 2 and the drive cylinder of the cutting component 3 are located on opposite sides of the frame 1, realizing the partitioned layout of the heavy-duty drive components and the precision paper feeding area. This layout avoids the direct impact of the vibration of the drive components on the paper feeding and ensures that there are no visual or operational obstructions around the paper feeding area. This facilitates daily operation observation and inspection and maintenance, and also reduces systemic hidden dangers such as paper deviation and cutting misalignment caused by uneven stress on the frame.

[0028] It also includes rollers 4 symmetrically arranged in the conveying area for stabilizing paper transport. Both ends of the two sets of rollers 4 are rotatably connected to the inner wall of the frame 1. A paper feeder 5 is provided between the two sets of rollers 4. Both sides of the paper feeder 5 are connected to the frame 1 through connecting hooks. A bracket 6 is provided on the paper feeder 5.

[0029] Here, the surfaces of both sets of rollers 4 are higher than the upper surface of the paper feed 5, and the distance between the inner sides of the two rollers is equal to or slightly smaller than the standard width of the paper to be conveyed, forming a slightly interference limiting channel. When the paper is conveyed, the rollers 4 rotate synchronously and driven by the friction force of the paper edge due to the high-precision rotational cooperation between their two ends and the inner wall of the frame 1, converting sliding friction into rolling friction. This achieves low-resistance limiting and guiding of the paper side without a power source, effectively preventing the paper from shifting to the left or right, and preventing scratches on the paper edge surface due to speed difference.

[0030] Furthermore, the paper feeder 5 is a rectangular flat plate with a hard anodized or coated surface. Its length spans the entire conveying area, forming a flat and wear-resistant paper support platform. This provides stable support for the paper without any hanging, preventing the paper from drooping, warping, or wrinkling. The connecting hooks on both sides are specifically downward-bent L-shaped hooks. A rectangular hanging slot is correspondingly provided on the frame 1. During installation, the L-shaped hooks are hung into the rectangular hanging slots from top to bottom, and the paper feeder itself is used to achieve self-locking. This structure takes into account both the need for convenient assembly and disassembly and the need for support rigidity.

[0031] The installation method here is not limited to the one described above; it is a direct reference to a conventional technical solution and will not be elaborated further here.

[0032] The frame 1 is connected to the support 6 via a drive component. The drive component includes a guide frame 9 symmetrically mounted on the frame 1. A hydraulic cylinder 10 is fixedly mounted on the inner wall of the guide frame 9 via a fastener. A movable plate 11 is slidably connected in the guide groove of the guide frame 9. The movable plate 11 is connected to the corresponding side of the support 6. The output end of the hydraulic cylinder 10 is connected to the movable plate 11. When the hydraulic cylinder 10 drives the movable plate 11 to move, the support 6 moves along the path of the guide groove to form a moving area for the roller 8.

[0033] Here, two guide frames 9 symmetrically mounted on the frame 1 each have through-type guide grooves on their inner sides. The guide grooves can be any of the conventional limiting groove types, such as ordinary straight grooves, T-shaped grooves, or dovetail grooves. Sliding guide rails matching the cross-sectional shape of the guide grooves are provided on both sides of the moving plate 11. Through the concave-convex interlocking structure of the groove and the guide rail, the moving plate 11 is strictly limited in multiple degrees of freedom, ensuring that when driven, it can only slide in a straight line along a preset path parallel to the paper feeding direction. Structurally, this reduces the possibility of pitching, swaying, and jamming of the moving plate 11 after being subjected to force.

[0034] Furthermore, the cylinder body of the hydraulic cylinder 10 is directly locked to the inner wall of one side of the guide frame 9 by bolt-like fasteners, making its mounting base integrated with the guide structure. Its output end is directly connected to the end of the moving plate 11 through a floating joint. This connection method can compensate for minor installation errors, so that the extension or retraction thrust or pull force generated by the hydraulic cylinder 10 can be directly and losslessly transmitted to the moving plate 11, resulting in a short power transmission link and high efficiency.

[0035] A slider 7 is slidably connected to the bracket 6 via an adjusting component. The adjusting component includes partitions 12 symmetrically installed inside the bracket 6. The two sets of partitions 12 form three sets of placement cavities 13 inside the bracket 6. Rotating rods 14 are rotatably connected to each of the three sets of placement cavities 13. The three sets of rotating rods 14 are connected to each other via connecting shafts to achieve synchronous rotation. A drive motor 15 is fixedly connected to the bracket 6. A first rotating wheel 16 is provided on the bracket 6. The first rotating wheel 16 is connected to the end of the corresponding rotating rod 14. A second rotating wheel 17 is fixedly connected to the output end of the drive motor 15. The first rotating wheel 16 and the second rotating wheel 17 are connected by belt drive. When the drive motor 15 drives the first rotating wheel 16 and the second rotating wheel 17 to rotate via the belt, the three sets of rotating rods 14 rotate accordingly and form a rotation zone.

[0036] Here, the two sets of partitions 12 are reinforcing ribs integrally formed with the bracket 6. They divide the interior of the bracket 6 into three sets of independent placement cavities 13 arranged side by side along the paper feed width direction. Each placement cavity 13 provides an independent accommodating space for the rotating rod 14 with axial limiting. The partition layout is regular, ensuring that the transmission components and slider 7 contained therein do not interfere with each other.

[0037] Furthermore, both ends of the three sets of rotating rods 14 are rotatably supported on the inner wall of the corresponding placement cavity 13 by rolling bearings, so as to achieve smooth and stable rotation assembly. The mating ends of two adjacent rotating rods 14 are connected in series by a spline connecting shaft. This connection method has high rigidity and no transmission gap, which ensures that multiple rotating rods can maintain complete synchronization and speed rotation from the structure, effectively eliminating the problem of asynchronous rotation caused by factors such as elastic deformation.

[0038] The bottom walls of the three placement cavities 13 are all provided with sliding grooves 18 for sliding sliders 7. The sliders 7 are slidably connected in the sliding grooves 18. There are at least six groups of sliders 7 in each placement cavity 13. The rotating rod 14 is symmetrically provided with multiple spiral guide grooves 19 along the axial direction. The spiral guide grooves 19 are divided into left-hand spiral sections and right-hand spiral sections with opposite directions of rotation. The ends of the sliders 7 slide in the corresponding left-hand spiral section or right-hand spiral section respectively. When in the rotation zone, the sliders 7 in the three placement cavities 13 are all guided by the left-hand spiral section or right-hand spiral section and move along the path of the sliding grooves 18, forming a synchronous adjustment zone for the corresponding multiple groups of sliders 7.

[0039] Here, the sliding groove 18 can be a common limiting groove structure such as a straight groove, a T-shaped groove or a dovetail groove. The bottom of the slider 7 is provided with a guide rail part that matches its shape. Through this concave-convex interlocking guide structure, the slider 7 is constrained in the sliding groove 18 with high precision and can only slide in a one-dimensional straight line in a direction parallel to the axis of the rotating rod 14. Structurally, this reduces the risk of the slider deflecting or coming out when subjected to force.

[0040] Furthermore, the number of sliders 7 in a single placement cavity 13 is at least six, evenly distributed at multiple points, which can form a multi-point uniform pressure in the paper width direction. During adjustment, the rotating rod 14 rotates, and the spiral groove walls of the left-hand spiral section and the right-hand spiral section on it generate a thrust on the end of the slider 7 embedded therein. Since the spiral directions of the two parts are opposite, the rotation of the rotating rod will drive the slider groups located on both sides of its center line to be subjected to synchronous axial forces towards the center of the rotating rod or towards both ends of the rotating rod, thereby realizing that the slider groups on both sides converge towards each other or expand away from each other in the sliding groove 18, and complete the synchronous adjustment of the spacing of all sliders at one time.

[0041] A paper-pressing roller 8 is connected to the slider 7 via a quick-release mechanism. The quick-release mechanism includes a piston cylinder 20 fixedly installed at the bottom of the slider 7. A slide rod 21 is slidably connected inside the piston cylinder 20. A rectangular block 22 is fixedly installed at the end of the slide rod 21. A spring 23 is sleeved on the piston cylinder 20. The two ends of the spring 23 abut against the surfaces of the slider 7 and the rectangular block 22 to form a buffer zone. An insertion hole 24 is opened in the middle of the rectangular block 22. A toothed groove 25 for limiting is provided on the inner wall of the insertion hole 24. A cap 26 coaxial with the insertion hole 24 is fixedly installed on the rectangular block 22. A magnetic ring 27 is fixedly installed inside the cap 26.

[0042] Here, the quick-release mechanism uses the piston cylinder 20, which is vertically fixed to the bottom of the slider 7, as the fixed base. The top of the slide rod 21 is provided with a limiting boss. It is slidably fitted in the inner cavity of the piston cylinder 20 and can make small linear extensions and retractions along its axis. However, the limiting boss is blocked by the bottom wall of the piston cylinder to prevent the slide rod from coming out.

[0043] Furthermore, the spring 23 is mounted on the outer assembly of the piston cylinder 20 and the slide rod 21, with its upper and lower ends abutting against the bottom surface of the slider 7 and the top surface of the rectangular block 22, respectively. When the roller 8 comes into contact with the paper and is pressed, the impact force pushes the rectangular block 22 and the slide rod 21 to move upward and compress the spring 23. The elastic deformation of the spring absorbs and slowly releases the rigid impact energy, forming an adaptive buffer to avoid damaging the paper due to excessive instantaneous pressure.

[0044] Furthermore, during the assembly of the roller 8, its insertion rod 31 is first inserted into the insertion hole 24. The magnetic ring 27 inside the cap 26 magnetically attracts the magnetic block 33 at the end of the insertion rod, providing axial quick pre-positioning. At the same time, the toothed ring 32 on the insertion rod engages circumferentially with the toothed groove 25 in the hole. Circumferential positioning and axial pre-fixing can be completed simultaneously without tools, simplifying the assembly operation of the roller 8 into a single insertion action, greatly improving the ease of assembly and disassembly.

[0045] The rectangular block 22 has a threaded groove 28 that communicates with the insertion hole 24. The threaded groove 28 is threadedly connected to a clamping rod 29. The end of the clamping rod 29 is fixedly connected to a toggle ring 30 for actuation. The roller 8 is covered with a rubber pad 34 for flexible cushioning.

[0046] Here, the threaded groove 28 is formed on one side of the rectangular block 22, and its axis is perpendicular to and intersects the axis of the insertion hole 24. This structure allows the end of the clamping rod 29 screwed into the threaded groove 28 to be radially and vertically pressed against the side wall of the roller rod 31 inserted into the insertion hole. The locking force is a positive pressure, the force direction is precise, and it can generate the maximum static friction force to prevent the rod from axially dislodging.

[0047] In this invention, the roller 8 is first assembled. The operator inserts the rod 31 on the support bracket of the roller 8 into the insertion hole 24 of the rectangular block 22 at the bottom of the slider 7. The toothed ring 32 on the rod 31 precisely meshes with the toothed groove 25 on the inner wall of the insertion hole 24 to achieve circumferential positioning. At the same time, the magnetic block 33 at the end of the rod 31 quickly magnetically attaches with the magnetic ring 27 inside the cap 26 to form a preliminary fixation. Then, the operator rotates the actuating ring 30 to drive the threaded connection on the rectangular block 22. The clamping rod 29 in the groove 28 is fed axially until the end of the clamping rod 29 is in close contact with the surface of the insertion rod 31, thus completing the locking and fixing of the roller 8. During this process, the piston cylinder 20 at the bottom of the slider 7, the slide rod 21, and the spring 23 sleeved outside the piston cylinder 20 form a flexible buffer structure. The spring 23 is always in a pre-compressed state, and its two ends are respectively pressed against the bottom of the slider 7 and the surface of the rectangular block 22. When the roller 8 presses the paper, it can offset the instantaneous impact force through its own deformation, thus preventing the paper from being damaged by pressure.

[0048] After the roller 8 is assembled, the overall pressing position is adjusted according to the requirements of the paper cutting station: start the hydraulic cylinder 10 in the guide frame 9 on the frame 1. The output end of the hydraulic cylinder 10 extends and retracts, driving the moving plate 11 connected to it to slide linearly along the guide groove of the guide frame 9. Since the moving plate 11 is fixedly connected to the corresponding side of the bracket 6 on the paper feed 5, it drives the bracket 6 to move synchronously until the roller 8 moves to the optimal pressing position corresponding to the transmission roller 2 and the cutting component 3, so as to achieve precise adaptation of the overall station.

[0049] Then, according to the width specifications of the paper to be processed, the spacing of the multiple sets of rollers 8 is adjusted: the drive motor 15 on the bracket 6 is started, and the output end of the drive motor 15 drives the second rotating wheel 17 to rotate, which drives the first rotating wheel 16 connected to it to rotate synchronously through belt transmission, thereby driving the rotating rod 14 connected to the first rotating wheel 16 to rotate. Since the three sets of rotating rods 14 in the placement cavity 13 are connected to each other through connecting shafts, the three sets of rotating rods 14 rotate synchronously in the same direction; the spiral guide grooves 19 symmetrically opened along the axial direction on the rotating rod 14 are divided into left-hand spiral segments with opposite rotation directions and The right-hand spiral segment has the end of the slider 7 embedded in the corresponding spiral guide groove 19. When the rotating rod 14 rotates, the groove wall of the spiral guide groove 19 generates an axial guiding force on the slider 7, forcing the slider 7 to move linearly along the sliding groove 18 on the bottom wall of the placement cavity 13. The left-hand spiral segment drives the corresponding side slider 7 to move closer to the middle of the rotating rod 14, and the right-hand spiral segment drives the corresponding side slider 7 to move closer to the middle of the rotating rod 14 simultaneously, or to expand synchronously to both ends when rotating in the opposite direction. This ultimately achieves synchronous adjustment of the spacing between all sliders 7 and rollers 8, precisely adapting to the pressing requirements of different paper widths.

[0050] When the equipment is in operation, the drive roller 2 rotates and drives the paper to be conveyed along the paperboard 5 towards the cutting component 3. During the conveying process, the rollers 4 symmetrically arranged in the conveying area provide auxiliary limiting for both sides of the paper. At the same time, the rollers 8 covered with rubber pads 34 are in close contact with the paper surface under their own weight and the pre-pressure of the spring 23. The rubber pads 34 increase the friction between the rollers 8 and the paper, which not only prevents relative slippage during paper conveying, but also prevents the rollers 8 from scratching the paper surface. Through the coordinated pressing of the rollers 4 and 8, problems such as paper deviation, warping, and loosening are effectively suppressed, ensuring that the paper is always conveyed to the cutting component 3 in a flat state. Finally, the cutting component 3 completes the fixed-length precise cutting.

[0051] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A pressure roller mechanism for a paper cutting conveyor, comprising a frame (1), a drive roller (2) for conveying paper is provided on one side of the frame (1), and a cutting assembly (3) for cutting paper is provided on the other side of the frame (1), wherein a paper conveying zone is formed between the drive roller (2) and the cutting assembly (3), characterized in that: It also includes rollers (4) symmetrically arranged in the conveying area for stabilizing paper transport. Both ends of the two sets of rollers (4) are rotatably connected to the inner wall of the frame (1). A paper feeder (5) is provided between the two sets of rollers (4). Both sides of the paper feeder (5) are connected to the frame (1) through connecting hooks. A bracket (6) is provided on the paper feeder (5). A slider (7) is slidably connected to the bracket (6) through an adjusting component. The adjusting component includes partitions (12) symmetrically installed in the bracket (6). The two sets of partitions (12) form three sets of placement cavities (13) in the bracket (6). Rotating rods (14) are rotatably connected in each of the three sets of placement cavities (13). The three sets of rotating rods (14) are connected to each other through connecting shafts to achieve synchronous rotation. The bottom walls of the three sets of placement cavities (13) are provided with sliding grooves (18) for sliding of sliders (7). The sliders (7) are slidably connected in the sliding grooves (18). The number of sliders (7) in a single set of placement cavities (13) is at least six. The rotating rod (14) is symmetrically provided with multiple spiral guide grooves (19) along the axial direction. The spiral guide grooves (19) are divided into left-hand spiral segments and right-hand spiral segments with opposite rotation directions. The ends of the sliders (7) slide in the corresponding left-hand spiral segments or right-hand spiral segments respectively. When in the rotation zone, the sliders (7) in the three sets of placement cavities (13) are guided by the left-hand spiral segments or right-hand spiral segments and move along the path of the sliding grooves (18), forming a synchronous adjustment zone for multiple sets of sliders (7). The slider (7) is connected to a roller (8) for pressing paper via a quick-release mechanism, and the frame (1) is connected to the bracket (6) via a drive mechanism.

2. The pressure roller mechanism of a paper cutting conveyor according to claim 1, characterized in that: The driving component includes a guide frame (9) symmetrically mounted on the frame (1). A hydraulic cylinder (10) is fixedly mounted on the inner wall of the guide frame (9) by a fastener. A movable plate (11) is slidably connected in the guide groove of the guide frame (9). The movable plate (11) is connected to the corresponding side of the bracket (6). The output end of the hydraulic cylinder (10) is connected to the movable plate (11). When the hydraulic cylinder (10) drives the movable plate (11) to move, the bracket (6) moves along the path of the guide groove to form a moving area for the roller (8).

3. The pressure roller mechanism of a paper cutting conveyor according to claim 1, characterized in that: A drive motor (15) is fixedly connected to the bracket (6). A first rotating wheel (16) is provided on the bracket (6). The first rotating wheel (16) is connected to the end of the corresponding rotating rod (14). A second rotating wheel (17) is fixedly connected to the output end of the drive motor (15). The first rotating wheel (16) and the second rotating wheel (17) are connected by belt drive. When the drive motor (15) drives the first rotating wheel (16) and the second rotating wheel (17) to rotate through the belt, the three sets of rotating rods (14) rotate accordingly and form a rotation area.

4. The pressure roller mechanism of a paper cutting conveyor according to claim 3, characterized in that: The quick-release component includes a piston cylinder (20) fixedly installed at the bottom of the slider (7). A slide rod (21) is slidably connected inside the piston cylinder (20). A rectangular block (22) is fixedly installed at the end of the slide rod (21). A spring (23) is sleeved on the piston cylinder (20). The two ends of the spring (23) abut against the surfaces of the slider (7) and the rectangular block (22) respectively to form a buffer zone. A insertion hole (24) is opened in the middle of the rectangular block (22). A toothed groove (25) for limiting is provided on the inner wall of the insertion hole (24). A cap (26) coaxial with the insertion hole (24) is fixedly installed on the rectangular block (22). A magnetic ring (27) is fixedly installed inside the cap (26).

5. The pressure roller mechanism of a paper cutting conveyor according to claim 4, characterized in that: The rectangular block (22) has a threaded groove (28) that communicates with the insertion hole (24). The threaded groove (28) is threadedly connected to a clamping rod (29). The end of the clamping rod (29) is fixedly connected to a toggle ring (30) for toggling.

6. The pressure roller mechanism of a paper cutting conveyor according to claim 5, characterized in that: The roller (8) has an integrally formed insert rod (31) that is compatible with the insertion hole (24) on its support bracket. The insert rod (31) is provided with a toothed ring (32) that matches the toothed groove (25). The end of the insert rod (31) is fixedly installed with a magnetic block (33) that matches the magnetic ring (27). When the insert rod (31) is inserted into the insertion hole (24), the toothed ring (32) meshes with the toothed groove (25), and the magnetic block (33) magnetically attracts the magnetic ring (27) to form a fixed area. When it is in the fixed area, the actuating ring (30) is rotated to make the clamping rod (29) move along the threaded groove (28) and clamp the insert rod (31) to form a locking area.

7. The pressure roller mechanism of a paper cutting conveyor according to claim 6, characterized in that: The roller (8) is covered with a rubber pad (34) for flexible cushioning.

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