Knife sharpener for a rotary cutting machine

Abstract

The utility model discloses a big gyration paper cutting machine is with knife grinder, including frame, install in the frame on swing subassembly, install paper cutting subassembly on swing subassembly, and install on the knife grinder subassembly of swing subassembly, the knife grinder subassembly includes install on swing subassembly on knife grinder pusher, install on knife grinder pusher on knife grinder transmission part, install on knife grinder transmission part on knife grinder spare, knife grinder transmission part includes install on swing subassembly on knife grinder slide rail, slide on knife grinder slide rail on knife grinder transmission board, install on swing subassembly on push bearing, install in transmission screw rod of push bearing, knife grinder transmission board is engaged and is installed on transmission screw rod, knife grinder spare is installed on knife grinder transmission board, the utility model discloses a big gyration paper cutting machine is with knife grinder, realizes the automation knife grinder, has reduced the manual intervention, has improved work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of paper cutting equipment technology, and in particular to a sharpening device for a large rotary paper cutter. Background Technology

[0002] Large rotary paper cutters are widely used in the paper processing industry to cut paper into the required sizes. During long-term use, the blades of large rotary paper cutters are prone to wear, dulling, and even micro-chipping after cutting paper, cardboard, and other materials. This leads to decreased cutting accuracy and increased cutting resistance, thus requiring regular sharpening and repair of the blades. In existing technologies, the sharpening of large rotary paper cutters largely relies on manual operation: operators need to manually adjust the relative position and angle of the sharpening tool and the blade, and complete the sharpening by manually pushing or rotating the sharpening component. Manual sharpening is slow and requires frequent machine stops for adjustments, affecting the overall working rhythm of the paper cutter, especially in mass production scenarios, which significantly reduces production efficiency. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a sharpening device for a large rotary paper cutter with high sharpening efficiency.

[0004] The present invention adopts the following technical solution:

[0005] A sharpening device for a large rotary paper cutter includes a frame, a swing assembly mounted on the frame, a paper cutting assembly mounted on the swing assembly, and a sharpening assembly mounted on the swing assembly. The sharpening assembly includes a sharpening pusher mounted on the swing assembly, a sharpening transmission component mounted on the sharpening pusher, and a sharpening component mounted on the sharpening transmission component. The sharpening transmission component includes a sharpening slide rail mounted on the swing assembly, a sharpening transmission plate slidably mounted on the sharpening slide rail, a push bearing mounted on the swing assembly, and a transmission screw mounted within the push bearing. The sharpening transmission plate is engaged with the transmission screw. The sharpening component is mounted on the sharpening transmission plate. The sharpening pusher includes a push cylinder mounted on the swing assembly, a push rod mounted on the push cylinder, a transmission wheel sleeved on the transmission screw, a transmission lug mounted on the transmission wheel, and a return spring mounted on the transmission lug and the push cylinder. The push rod abuts against the transmission lug.

[0006] Furthermore, there are two return springs, which are respectively installed on both sides of the push rod.

[0007] Furthermore, the sharpening component includes a first sharpening fixing plate mounted on the sharpening transmission plate, a first sharpening cylinder mounted on the first sharpening fixing plate, a first sharpening part mounted on the first sharpening cylinder, a second sharpening fixing plate mounted on the sharpening transmission plate, a second sharpening cylinder mounted on the second sharpening fixing plate, a second sharpening part mounted on the second sharpening cylinder, and a sharpening angle disposed between the first sharpening part and the second sharpening part; the sharpening angle is disposed in the direction of the paper cutting assembly.

[0008] Furthermore, the first sharpening unit includes a first rotating disk mounted on the first sharpening cylinder and a first sharpening layer mounted on the first rotating disk; the second sharpening unit includes a second rotating disk mounted on the second sharpening cylinder and a second sharpening layer mounted on the second rotating disk; the sharpening angle is disposed between the first sharpening layer and the second sharpening layer.

[0009] Furthermore, the swing assembly includes a swing drive mounted on the frame and a swing arm mounted on the swing drive; the sharpening pusher is mounted on the swing arm.

[0010] Furthermore, the swing drive component includes a swing drive unit mounted on the frame, a first swing bearing, a second swing bearing, and a rotating tube mounted in the first and second swing bearings; one end of the rotating tube is connected to the swing drive unit for transmission, and the other end is fixedly connected to the swing arm.

[0011] Furthermore, the swing drive unit includes a swing drive motor mounted on the frame, a first swing gear mounted on the swing drive motor, a second swing gear mounted on the rotating tube, and a swing belt that drives the first swing gear and the second swing gear.

[0012] Furthermore, the paper cutting assembly includes a paper cutting drive roller rotatably mounted inside the rotating tube, a paper cutting drive component mounted at one end of the paper cutting drive roller, a paper cutting transmission component mounted at the other end of the paper cutting drive roller, and a paper cutting blade mounted on the paper cutting transmission component; the paper cutting blade is disposed on the side close to the blade sharpening assembly.

[0013] Furthermore, the paper cutting drive includes a paper cutting drive cylinder mounted on the frame, a first paper cutting gear mounted on the paper cutting drive cylinder, a second paper cutting gear mounted on one end of the paper cutting transmission roller, and a paper cutting belt that drives the first paper cutting gear and the second paper cutting gear.

[0014] Furthermore, the paper cutting transmission component includes a first transmission gear mounted on the free end of the paper cutting transmission roller, a first transmission bearing mounted on the swing arm, a second transmission bearing, a second transmission gear mounted on the first transmission bearing, a third transmission gear mounted on the second transmission bearing, and a transmission belt mounted on the first transmission gear, the second transmission gear, and the third transmission gear; the second transmission gear is mounted between the first transmission gear and the third transmission gear; and the paper cutter is mounted on one end of the third transmission gear.

[0015] The beneficial effects of this utility model are as follows:

[0016] The grinding device for a large rotary paper cutter disclosed in this utility model achieves automated grinding through a grinding pusher and a grinding transmission component, reducing manual intervention and improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a perspective view of a sharpening device for a large rotary paper cutter according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Exploded view of the sharpening device for a large rotary paper cutter;

[0019] Figure 3 for Figure 1 Exploded view of the sharpening assembly of the sharpening device for a large rotary paper cutter;

[0020] Figure 4 for Figure 1 Exploded view of the oscillating assembly of the sharpening device for a large rotary paper cutter;

[0021] Figure 5 for Figure 1 Exploded view of the paper cutting assembly of the grinding device for a large rotary paper cutter.

[0022] Reference numerals: 10, frame; 20, swing assembly; 30, paper cutting assembly; 40, sharpening assembly; 41, sharpening pusher; 42, sharpening transmission component; 43, sharpening component; 420, sharpening slide rail; 421, sharpening transmission plate; 422, push bearing; 423, transmission screw; 410, push cylinder; 411, push rod; 412, transmission wheel; 413, transmission ear plate; 414, return spring; 430, first sharpening fixing plate; 431, first sharpening cylinder; 432, first sharpening section; 433, second sharpening fixing plate; 434, second sharpening cylinder; 435, second sharpening section; 436, sharpening angle; 437, first rotating disk; 438, first sharpening layer; 439, second rotating disk. Moving disc; 4390, second grinding layer; 21, swing drive component; 22, swing arm; 211, first swing bearing; 212, second swing bearing; 213, rotating tube; 214, swing drive motor; 215, first swing gear; 216, second swing gear; 217, swing belt; 31, paper cutting transmission roller; 32, paper cutting drive component; 33, paper cutting transmission component; 34, paper cutter; 320, paper cutting drive cylinder; 321, first paper cutting gear; 322, second paper cutting gear; 323, paper cutting belt; 330, first transmission gear; 331, first transmission bearing; 332, second transmission bearing; 333, second transmission gear; 334, third transmission gear; 335, transmission belt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Please see Figures 1 to 5 This invention discloses a sharpening device for a large rotary paper cutter according to one embodiment of the present invention. The device includes a frame 10, a swing assembly 20 mounted on the frame 10, a paper cutting assembly 30 mounted on the swing assembly 20, and a sharpening assembly 40 mounted on the swing assembly 20. The sharpening assembly 40 includes a sharpening pusher 41 mounted on the swing assembly 20, a sharpening transmission member 42 mounted on the sharpening pusher 41, and a sharpening member 43 mounted on the sharpening transmission member 42. The sharpening transmission member 42 includes a sharpening slide rail 420 mounted on the swing assembly 20, a sharpening transmission plate 421 slidably mounted on the sharpening slide rail 421, and a sharpening member 43 mounted on the swing assembly 20. The component 20 includes a push bearing 422 and a transmission screw 423 installed in the push bearing 422; a grinding transmission plate 421 is engaged with the transmission screw 423; a grinding component 43 is installed on the grinding transmission plate 421; the grinding push component 41 includes a push cylinder 410 installed on the swing component 20, a push rod 411 installed on the push cylinder 410, a transmission wheel 412 sleeved on the transmission screw 423, a transmission ear plate 413 installed on the transmission wheel 412, and a return spring 414 installed on the transmission ear plate 413 and the push cylinder 410; the push rod 411 is arranged to abut against the transmission ear plate 413.

[0027] The working principle of the sharpening device for the large rotary paper cutter of this utility model is as follows: The push cylinder 410 pushes the transmission ear plate 413 upward through the push rod 411, thereby driving the transmission wheel 412 to rotate and causing the transmission screw 423 to rotate; the sharpening transmission component 42 achieves linear motion through the meshing of the sharpening transmission plate 421 supported by the sharpening slide rail 420 and the transmission screw 423; when the transmission screw 423 rotates, the sharpening transmission plate 421 installed on it will move along the sharpening slide rail 420; finally installed on the sharpening transmission plate 421, it moves with it to sharpen the blade located on the paper cutting assembly 30; by adjusting the position and angle of the sharpening component 43 and the paper cutting assembly 30, precise sharpening of different parts of the blade can be achieved; when the sharpening process is completed, the return spring 414 installed between the transmission ear plate 413 and the push cylinder 410 allows the push cylinder 410 to retract, and the transmission ear plate 413 and its connected components can be smoothly reset, preparing for the next sharpening action.

[0028] Compared to existing technologies, the grinding device for the large rotary paper cutter of this utility model achieves automated grinding through the grinding pusher 41 and the grinding transmission 42, reducing manual intervention and improving work efficiency. After each grinding cycle, the return spring 414, in conjunction with the transmission ear plate 413, can automatically reset, preparing for the next grinding action and further enhancing the degree of automation. The precise cooperation between the grinding slide rail 420 and the grinding transmission plate 421 ensures stable linear movement during the grinding process, thereby improving the grinding accuracy. At the same time, the linkage mechanism between the push cylinder 410 and the transmission screw 423 makes the movement of the grinding component 43 more precise and controllable. By adjusting the position and angle of the grinding component 43 and the paper cutting assembly 30, precise grinding of different parts of the blade can be achieved, adapting to different types and shapes of blades, thus improving the applicability and flexibility of the equipment.

[0029] Please refer to Figure 2 and Figure 3 There are two return springs 414, which are respectively installed on both sides of the push rod 411. Installing return springs 414 on both sides ensures that the force is evenly distributed during the resetting process of the sharpening device, avoiding imbalance caused by a single spring; it helps maintain the stability and accuracy of the sharpening assembly 40; the dual-spring structure increases the reliability of resetting; even if one spring fails, the other spring can still perform the resetting function, preventing equipment failure due to the failure of a single spring; the dual-spring structure can distribute the stress generated during the resetting process, reducing the burden on a single spring and thus extending its service life; at the same time, the balanced force can reduce wear between the components of the sharpening assembly 40, extending the service life of the entire device; the simultaneous action of the two return springs 414 can provide a greater resetting force, accelerating the resetting process of the sharpening assembly 40. This helps to shorten the time of each sharpening cycle and improve production efficiency.

[0030] The sharpening assembly 43 includes a first sharpening fixing plate 430 mounted on the sharpening transmission plate 421, a first sharpening cylinder 431 mounted on the first sharpening fixing plate 430, a first sharpening part 432 mounted on the first sharpening cylinder 431, a second sharpening fixing plate 433 mounted on the sharpening transmission plate 421, a second sharpening cylinder 434 mounted on the second sharpening fixing plate 433, a second sharpening part 435 mounted on the second sharpening cylinder 434, and a sharpening angle 436 between the first sharpening part 432 and the second sharpening part 435; the sharpening angle 436 is set towards the paper cutting assembly 30. The first sharpening part 432 and the second sharpening part 435 are each controlled by an independent cylinder, and their positions and angles can be adjusted separately to achieve a more precise sharpening operation. By precisely controlling the movement of the two grinding sections, it can be ensured that all parts of the blade are ground evenly and accurately. The grinding angle 436 ensures that the two grinding sections form a stable angle during the grinding process, reducing deviations and improving grinding accuracy. The first grinding cylinder 431 and the second grinding cylinder 434 control the first grinding section 432 and the second grinding section 435 respectively, allowing for flexible adjustment of the grinding angle and position according to the shape and wear of the blade, adapting to different types of blades. The grinding angle 436 can be adjusted within a certain range, enabling the grinding device to adapt to blades of different thicknesses and shapes, improving the flexibility and applicability of the equipment. The two grinding sections can perform grinding operations simultaneously, significantly improving grinding efficiency and reducing the time required for a single grinding cycle. By independently controlling the two grinding sections, the grinding position and angle can be adjusted without stopping the machine, reducing downtime caused by blade changes and improving production efficiency.

[0031] The first sharpening unit 432 includes a first rotating disk 437 mounted on a first sharpening cylinder 431 and a first sharpening layer 438 mounted on the first rotating disk 437; the second sharpening unit 435 includes a second rotating disk 439 mounted on a second sharpening cylinder 434 and a second sharpening layer 4390 mounted on the second rotating disk 439; a sharpening angle 436 is disposed between the first sharpening layer 438 and the second sharpening layer 4390; specifically, the first sharpening layer 438 and the second sharpening layer 4390 can be whetstones, and in another embodiment, the first sharpening layer 438 and the second sharpening layer 4390 can also be grinding wheels. The first rotating disk 437 and the second rotating disk 439 can rotate independently, respectively driving the first sharpening layer 438 and the second sharpening layer 4390 to perform sharpening operations. This design ensures more precise movement of each grinding layer, improving grinding accuracy and consistency. The grinding angle 436 ensures a stable angle between the first grinding layer 438 and the second grinding layer 4390 during grinding, reducing deviations and further enhancing grinding precision. Grinding layers can be either whetstones or grinding wheels, providing multiple options. Different grinding materials are suitable for different types of blades and various grinding needs, enhancing the adaptability and flexibility of the grinding device. The first grinding cylinder 431 and the second grinding cylinder 434 control the first grinding section 432 and the second grinding section 435 respectively, allowing for flexible adjustment of the grinding layer's movement and angle according to the specific blade shape and size. Both grinding layers can perform grinding operations simultaneously, significantly improving grinding efficiency and reducing the time required for a single grinding cycle. Independent control of the two grinding layers allows for adjustment of the grinding position and angle without stopping the machine, reducing downtime due to blade changes and improving production efficiency.

[0032] Please refer to Figure 2 and Figure 4 The oscillating assembly 20 includes an oscillating drive 21 mounted on the frame 10 and an oscillating arm 22 mounted on the oscillating drive 21; a sharpening pusher 41 is mounted on the oscillating arm 22. The oscillating arm 22 can oscillate around the axis of the oscillating drive 21, thereby moving the sharpening pusher 41 within a wider range. The sharpening device can handle blades of different lengths and shapes, improving its applicability; the oscillating drive 21 can precisely control the movement of the oscillating arm 22, ensuring that the sharpening pusher 41 moves along a predetermined trajectory during the sharpening process. This precise control helps improve the accuracy and consistency of sharpening; the structure of the oscillating arm 22 can reduce vibration and shaking during the sharpening process, maintaining the stability of the sharpening pusher 41 and further improving sharpening accuracy; the movement of the oscillating arm 22 can achieve multi-angle sharpening, adapting to different types of blades and different sharpening needs. This flexibility makes the sharpening device more versatile; the oscillating drive 21 can adjust the position and angle of the oscillating arm 22 in real time, enabling the sharpening device to dynamically adapt to the wear of the blade and improve the sharpening effect.

[0033] The swing drive component 21 includes a swing drive unit mounted on the frame 10, a first swing bearing 211, a second swing bearing 212, and a rotating tube 213 mounted in the first swing bearing 211 and the second swing bearing 212; one end of the rotating tube 213 is connected to the swing drive unit for transmission, and the other end is fixedly connected to the swing arm 22. The rotating tube 213 is directly connected to the swing drive unit, reducing intermediate transmission links and improving transmission efficiency and accuracy. Direct transmission reduces the number of transmission components, lowers wear and failure rate, and extends the service life of the equipment. The first swing bearing 211 and the second swing bearing 212 support the two ends of the rotating tube 213 respectively, ensuring that the rotating tube 213 remains stable during swinging and reducing vibration and shaking. The double bearing structure makes the rotating tube 213 more evenly stressed, avoiding the skew problem that may occur when supported by a single bearing, and further improving the stability of the equipment. The rotation of the rotating tube 213 can be adjusted at multiple angles, allowing the swing arm 22 to move flexibly in different directions and angles to adapt to different types of blades and different grinding needs. The swing drive unit can adjust the rotation angle of the rotating tube 213 in real time, enabling the grinding device to dynamically adapt to the wear of the blades and improve the grinding effect.

[0034] The oscillating drive unit includes an oscillating drive motor 214 mounted on the frame 10, a first oscillating gear 215 mounted on the oscillating drive motor 214, a second oscillating gear 216 mounted on the rotating tube 213, and an oscillating belt 217 that drives the first oscillating gear 215 and the second oscillating gear 216. The first oscillating gear 215 and the second oscillating gear 216 are driven by the oscillating belt 217, ensuring that the rotation of the rotating tube 213 is more precise and stable. The high precision of gear transmission can improve the accuracy of sharpening; the oscillating drive motor 214 can precisely control the rotation speed and angle of the rotating tube 213, ensuring the stability and consistency of the sharpening process; the oscillating motor directly drives the rotating tube 213 through gears and belts, reducing intermediate transmission links and improving transmission efficiency; compared with other transmission methods (such as chain transmission), gear and belt transmission has less wear, longer service life, and lower maintenance costs; the first oscillating gear 215 and the second oscillating gear 216 are respectively installed on the oscillating drive motor 214 and the rotating tube 213, ensuring stability during transmission and reducing vibration and shaking; gear and belt transmission makes the rotating tube 213 more evenly stressed, avoiding the skew problem caused by single-point stress, and further improving the stability of the equipment.

[0035] Please refer to Figure 2 and Figure 5The paper cutting assembly 30 includes a paper cutting drive roller 31 rotatably mounted inside a rotating tube, a paper cutting drive component 32 mounted at one end of the paper cutting drive roller 31, a paper cutting drive component 33 mounted at the other end of the paper cutting drive roller 31, and a paper cutting blade 34 mounted on the paper cutting drive component 33; the paper cutting blade 34 is disposed on the side close to the grinding assembly 40. The paper-cutting drive roller 31 is rotatably mounted inside the rotating tube, ensuring its smooth operation, reducing vibration and sway, and improving cutting accuracy. The paper-cutting drive component 32 directly drives the paper-cutting drive roller 31, ensuring transmission accuracy and reliability, reducing transmission errors, and further improving cutting accuracy. The structure of the rotating tube allows the paper-cutting drive roller 31 to move at different angles and directions with the swing arm 22, adapting to different shapes and sizes of paper and improving the flexibility of the paper-cutting device. The paper-cutting drive component 32 can adjust the position and angle of the paper-cutting drive roller 31 in real time, enabling the paper-cutting device to dynamically adapt to the thickness and hardness of the paper, improving the cutting effect. The rapid rotation of the paper-cutting drive roller 31 and the flexible movement of the swing arm 22 can quickly position the paper cutter 34 to different positions on the paper, reducing adjustment time and improving cutting efficiency. The continuous rotation of the paper-cutting drive roller 31 enables continuous cutting operations, reducing the number of pauses and adjustments, and further improving production efficiency.

[0036] The paper cutting drive unit 32 includes a paper cutting drive cylinder 320 mounted on the frame 10, a first paper cutting gear 321 mounted on the paper cutting drive cylinder 321, a second paper cutting gear 322 mounted on one end of the paper cutting transmission roller 31, and a paper cutting belt 323 that drives the first paper cutting gear 321 and the second paper cutting gear 322. The paper-cutting drive cylinder 320 directly drives the paper-cutting transmission roller 31 via the paper-cutting belt 323, reducing intermediate transmission links and improving drive accuracy and efficiency. Gear and belt transmission reduce wear on transmission components and extend equipment lifespan. The meshing transmission of the first paper-cutting gear 321 and the second paper-cutting gear 322 ensures transmission stability and reliability, reducing vibration and sway during transmission. The use of the paper-cutting belt 323 buffers vibrations during transmission, further improving transmission stability. The paper-cutting drive cylinder 320 enables rapid and precise drive; by adjusting the cylinder pressure, the rotation speed and force of the paper-cutting transmission roller 31 can be flexibly controlled to adapt to paper of different thicknesses and hardnesses. The cylinder's rapid response characteristics allow the paper-cutting drive component 32 to adjust the position and angle of the paper-cutting transmission roller 31 in real time, ensuring accuracy and consistency in the paper-cutting process.

[0037] The paper cutting transmission component 33 includes a first transmission gear 330 mounted on the free end of the paper cutting transmission roller, a first transmission bearing 331 mounted on the swing arm 22, a second transmission bearing 332 mounted on the first transmission bearing 331, a second transmission gear 334 mounted on the second transmission bearing 332, and a transmission belt 335 mounted on the first transmission gear 330, the second transmission gear 333, and the third transmission gear 334; the second transmission gear 333 is mounted between the first transmission gear 330 and the third transmission gear 334; and the paper cutter 34 is mounted on one end of the third transmission gear 334. The multi-stage transmission structure of the first transmission gear 330, the second transmission gear 333, and the third transmission gear 334 enables a more precise transmission ratio, ensuring smoother and more accurate rotation of the paper-cutting transmission roller 31. Multi-stage transmission disperses errors during transmission, reducing wear and deformation of individual gears and improving the stability and precision of the entire transmission system. The first transmission bearing 331 and the second transmission bearing 332 respectively support the second transmission gear 333 and the third transmission gear 334, ensuring stability during rotation and reducing vibration and sway. The dual-bearing structure ensures more even force distribution on the transmission gears, avoiding the potential skew problem associated with single-bearing support and further enhancing equipment stability. The movement of the swing arm 22 and the multi-stage transmission structure allow the paper-cutting transmission component 33 to move flexibly in different directions and angles, adapting to different types of paper and cutting requirements. Through the connection of the transmission belt 335, the paper-cutting transmission component 33 can adjust the position and angle of the transmission gears in real time, enabling the paper-cutting device to dynamically adapt to the thickness and hardness of the paper, improving the cutting effect.

[0038] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A sharpening device for a large rotary paper cutter, characterized in that, The device includes a frame, a swing assembly mounted on the frame, a paper cutting assembly mounted on the swing assembly, and a sharpening assembly mounted on the swing assembly. The sharpening assembly includes a sharpening pusher mounted on the swing assembly, a sharpening transmission component mounted on the pusher, and a sharpening component mounted on the transmission component. The transmission component includes a sharpening slide rail mounted on the swing assembly, a sharpening transmission plate slidably mounted on the slide rail, a push bearing mounted on the swing assembly, and a transmission screw mounted within the push bearing. The transmission plate is engaged with the transmission screw. The sharpening component is mounted on the transmission plate. The pusher includes a push cylinder mounted on the swing assembly, a push rod mounted on the push cylinder, a transmission wheel sleeved on the transmission screw, a transmission lug mounted on the transmission wheel, and a return spring mounted on the lug and the push cylinder. The push rod abuts against the transmission lug.

2. The sharpening device for a large rotary paper cutter according to claim 1, characterized in that, There are two return springs, which are respectively installed on both sides of the push rod.

3. The sharpening device for a large rotary paper cutter according to claim 1, characterized in that, The sharpening assembly includes a first sharpening fixing plate mounted on the sharpening transmission plate, a first sharpening cylinder mounted on the first sharpening fixing plate, a first sharpening part mounted on the first sharpening cylinder, a second sharpening fixing plate mounted on the sharpening transmission plate, a second sharpening cylinder mounted on the second sharpening fixing plate, a second sharpening part mounted on the second sharpening cylinder, and a sharpening angle disposed between the first sharpening part and the second sharpening part; the sharpening angle is disposed in the direction of the paper cutting assembly.

4. The sharpening device for a large rotary paper cutter according to claim 3, characterized in that, The first sharpening unit includes a first rotating disk mounted on the first sharpening cylinder and a first sharpening layer mounted on the first rotating disk; the second sharpening unit includes a second rotating disk mounted on the second sharpening cylinder and a second sharpening layer mounted on the second rotating disk; the sharpening angle is disposed between the first sharpening layer and the second sharpening layer.

5. The sharpening device for a large rotary paper cutter according to claim 1, characterized in that, The swing assembly includes a swing drive mounted on the frame and a swing arm mounted on the swing drive; the sharpening pusher is mounted on the swing arm.

6. The sharpening device for a large rotary paper cutter according to claim 5, characterized in that, The swing drive includes a swing drive unit mounted on the frame, a first swing bearing, a second swing bearing, and a rotating tube mounted in the first and second swing bearings; one end of the rotating tube is connected to the swing drive unit for transmission, and the other end is fixedly connected to the swing arm.

7. The sharpening device for a large rotary paper cutter according to claim 6, characterized in that, The swing drive unit includes a swing drive motor mounted on the frame, a first swing gear mounted on the swing drive motor, a second swing gear mounted on the rotating tube, and a swing belt that drives the first swing gear and the second swing gear.

8. The sharpening device for a large rotary paper cutter according to claim 6, characterized in that, The paper cutting assembly includes a paper cutting drive roller rotatably mounted inside the rotating tube, a paper cutting drive component mounted at one end of the paper cutting drive roller, a paper cutting transmission component mounted at the other end of the paper cutting drive roller, and a paper cutting blade mounted on the paper cutting transmission component; the paper cutting blade is disposed on the side close to the blade sharpening assembly.

9. The sharpening device for a large rotary paper cutter according to claim 8, characterized in that, The paper cutting drive includes a paper cutting drive cylinder mounted on the frame, a first paper cutting gear mounted on the paper cutting drive cylinder, a second paper cutting gear mounted on one end of the paper cutting transmission roller, and a paper cutting belt mounted on the first paper cutting gear and the second paper cutting gear.

10. The sharpening device for a large rotary paper cutter according to claim 8, characterized in that, The paper cutting transmission component includes a first transmission gear mounted on the free end of the paper cutting transmission roller, a first transmission bearing mounted on the swing arm, a second transmission bearing, a second transmission gear mounted on the first transmission bearing, a third transmission gear mounted on the second transmission bearing, and a transmission belt mounted on the first transmission gear, the second transmission gear, and the third transmission gear; the second transmission gear is mounted between the first transmission gear and the third transmission gear; and the paper cutter is mounted on one end of the third transmission gear.

Images