Paper cutting mechanism for calico paper cutter

Abstract

The invention relates to the field of paper cutting equipment, and discloses a paper cutting mechanism for a calico paper cutter, the paper cutting mechanism comprises a first paper cutter, a first conveying table and a second conveying table for conveying paper are arranged on two sides of the first paper cutter, a cutter table and an extrusion block are slidably mounted in the first paper cutter, the cutter table is used for cutting the paper, and the extrusion block is used for extruding the paper. The extrusion block is used for clamping paper, and an anti-inclination device is arranged on the extrusion block; the cutting edge of calico paper is clamped through a limiting part, a lifting transmission part and an extrusion rotating block in the anti-inclination device, the cutter table can conveniently cut the paper, a first grinding transmission part, a grinding mounting part and a second grinding transmission part are arranged at the top of the extrusion rotating block, and after the cutter table cuts the paper, the paper can be conveniently cut. And glue and paper scraps adhered to the side part of the cutter table can be polished and cleaned, so that the problems that the side part of the cutter table deforms when the paper is cut again, and the cut paper has burrs and is not flat are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of paper cutting equipment, and more particularly to a paper cutting mechanism for a printed paper cutting machine. Background Art

[0002] The cutting mechanism of a paper cutter is the core component for precise paper cutting. It mainly consists of a cutting blade, a paper press, a worktable, and a positioning device. The cutting blade is usually made of high-hardness alloy steel and comes in either guillotine or circular blade styles to ensure a smooth cut. The paper press presses the paper before cutting to prevent shifting. The worktable is used to hold the material to be cut and is equipped with a scale or digital positioning system to adjust the cutting size. Some high-end models are also equipped with hydraulic or servo drive systems to enhance cutting force and precision. This structure is coordinated through mechanical or CNC systems and is suitable for paper, cardboard, and film of different thicknesses and materials. It is efficient, stable, and safe, and is widely used in the printing, packaging, and office fields.

[0003] Patent publication number CN110434916B discloses a paper cutting mechanism of a slitting machine, comprising an upper knife roller and a lower knife roller. Both the upper and lower knife rollers are provided with cutting knives. An annular groove is provided on the arcuate surface of the lower knife roller. Paper feed boards are provided at the paper outlet ends of the upper and lower knife rollers. The paper feed boards are provided with paper supporting pieces, which are embedded in the annular grooves to ensure that the paper is smoothly fed out of the paper feed board after being cut, and will not pass between the paper feed board and the lower knife roller due to the influence of static electricity and gravity, so as to carry out subsequent paper processing operations.

[0004] It can be seen from this that although the above-mentioned device can reduce the transportation problems caused by static electricity and gravity during use, during the cutting process, debris accumulates in the gap between the printed paper extrusion block and the blade, causing the blade to tilt, resulting in burrs and unevenness during cutting, which is more troublesome. Summary of the Invention

[0005] The present invention provides a paper cutting mechanism for a calico paper cutting machine, which solves the technical problem in the related art that during the cutting process, debris accumulates in the gap between the calico paper extrusion block and the blade, causing the blade to tilt, resulting in burrs and unevenness during cutting.

[0006] The present invention provides a paper cutting mechanism for a printed paper cutting machine, comprising a first paper cutting machine, wherein a first conveying platform and a second conveying platform for conveying paper are arranged on both sides of the first paper cutting machine, a cutting platform and an extrusion block are slidably installed inside the first paper cutting machine, the cutting platform is used to cut paper, the extrusion block is used to clamp paper, an anti-tilt device is arranged on the extrusion block, and the anti-tilt device is used to grind paper scraps and glue adhered to the cutting platform after cutting; the anti-tilt device comprises a limiting member, a lifting transmission member, an extrusion rotating block, a first grinding transmission member, A grinding mounting part and a second grinding transmission part, a limiting part is slidably installed inside the extrusion block, an extrusion rotating block is rotatably installed at the bottom of the limiting part, lifting transmission parts are symmetrically provided at both ends of the extrusion rotating block, a first grinding transmission part is fixedly installed on the top of the extrusion rotating block, a grinding mounting part is connected to the first grinding transmission part, a second grinding transmission part is provided between the grinding mounting parts, the lifting transmission part rotates to drive the extrusion rotating block to rotate, and the rotation of the extrusion rotating block causes the grinding mounting part to contact the cutting side of the cutting table for grinding.

[0007] As a further optimization scheme of the present invention, the anti-tilt device includes an edge pressing block fixedly installed on the side of the extrusion rotating block, and a clamping member is provided inside the extrusion block. The clamping member is used to squeeze the extrusion rotating block when the limit member descends.

[0008] As a further optimization scheme of the present invention, the limiting member includes a first limiting rod symmetrically arranged and slidably installed inside the extrusion block, a first limiting block is fixedly installed on the top of the first limiting rod, a first spring is arranged on the outside of the first limiting rod, a limiting mounting block is fixedly installed on the bottom of the first limiting rod, and an extrusion rotating block is rotatably installed inside the limiting mounting block.

[0009] As a further optimization scheme of the present invention, the lifting transmission member includes a second rotating block rotatably installed on the side of the extrusion block, a gear is fixedly installed on the end of the second rotating block, a first belt is arranged on the outside of the second rotating block, and a first rotating block is symmetrically arranged on the side of the extrusion rotating block. The outside of the first rotating block is connected to the first belt, and the first belt is made of elastic material and is retractable.

[0010] As a further optimization scheme of the present invention, the first grinding transmission member includes a first grinding mounting block fixedly mounted on the outer wall of the extrusion rotating block and symmetrically arranged, a first U-shaped block is rotatably mounted on the side of the first grinding mounting block, a third rotating block is rotatably mounted inside the first U-shaped block, a first telescopic rod is fixedly mounted on the side of the third rotating block, a second spring is arranged on the outside of the first telescopic rod, a second U-shaped block is fixedly mounted on the end of the first telescopic rod, a first limiting rotating rod is rotatably mounted inside the second U-shaped block, and the first limiting rotating rod is rotatably connected to the grinding mounting member.

[0011] As a further optimization scheme of the present invention, the grinding mounting part includes a connecting round rod rotatably mounted on the outside of the first limiting rotation rod, a symmetrically arranged square connecting block is fixedly mounted on the top of the connecting round rod, a second grinding mounting block is fixedly mounted on the outside of the square connecting block, a grinding ring is fixedly mounted on the outside of the second grinding mounting block, and the outside of the connecting round rod away from the first grinding transmission part is connected to the second grinding transmission part.

[0012] As a further optimization scheme of the present invention, the second grinding transmission member includes a second limiting rotating rod rotatably mounted on the outside of the connecting round rod, a third U-shaped block is rotatably mounted on the outside of the second limiting rotating rod, a third telescopic rod is fixedly mounted on the side of the third U-shaped block, a third spring is provided on the outside of the third telescopic rod, and a second limiting rotating rod and a third U-shaped block are provided at both ends of the third telescopic rod. The grinding mounting member is connected through the second grinding transmission member, and the grinding mounting member is connected to the extrusion rotating block through the first grinding transmission member.

[0013] As a further optimization scheme of the present invention, the clamping part includes a first clamping rod slidably installed inside the extrusion block, a first clamping block is fixedly installed on the top of the first clamping rod, a clamping transmission block is rotatably installed inside the first clamping block, a clamping rotating rod is fixedly installed inside the extrusion block, the clamping transmission block is rotatably installed on the outside of the clamping rotating rod, a clamping telescopic rod is slidably installed inside the clamping transmission block, a second clamping block is fixedly installed on the end of the clamping telescopic rod, a third clamping block is rotatably installed inside the second clamping block, a clamping threaded rod is threadedly installed on the internal thread of the third clamping block, and the clamping threaded rod is threadedly installed inside the first limit block.

[0014] As a further optimization solution of the present invention, a torsion spring is provided at the connection position between the extrusion rotating block and the limit mounting block, so that the bottom of the extrusion rotating block is in a vertical downward direction.

[0015] As a further optimization scheme of the present invention, a first slide groove is provided inside the extrusion block, a plurality of blocks are fixedly installed on the side of the cutting table and slide inside the first slide groove, a first cutter is fixedly installed on the lower part of the cutting table, a first rack is fixedly installed on the top of the first cutter, the first rack is meshed with the gear through a transmission gear, the gear is a ratchet structure, an extrusion protrusion is provided on the top of the extrusion rotating block, and the first clamping rod is located directly above the extrusion protrusion.

[0016] The beneficial effects of the present invention are:

[0017] The paper cutting mechanism for a calico paper cutter described in the present invention clamps the cut edge of the calico paper through a limiting member, a lifting transmission member, and an extruding rotary block inside an anti-tilt device, thereby facilitating the cutting of the paper by the cutting table. A first grinding transmission member, a grinding mounting member, and a second grinding transmission member are provided on the top of the extruding rotary block, so that the cutting table can grind and clean glue and paper scraps adhering to the side of the cutting table after cutting, thereby preventing the side of the cutting table from being deformed during the next cutting, resulting in burrs and unevenness on the paper after cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall appearance of the device of the present invention;

[0019] Figure 2 This is a schematic diagram of the installation of the overall device of the present invention;

[0020] Figure 3 It is a schematic diagram of the internal structure of the overall device of the present invention;

[0021] Figure 4 Schematic diagram of the internal structure of the anti-tilt device of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal structure installation of the anti-tilt device of the present invention;

[0023] Figure 6 It is a schematic diagram of the internal structure of the lifting transmission member of the present invention;

[0024] Figure 7 Schematic diagram of the installation position of the grinding mounting member of the present invention;

[0025] Figure 8 yes Figure 7 Enlarged view of point A in the middle;

[0026] Figure 9 yes Figure 7 Enlarged view of point B in the middle;

[0027] Figure 10 A schematic diagram of the installation position of the clamping member of the present invention;

[0028] Figure 11 yes Figure 10 Enlarged view of point C in the middle.

[0029] In the picture:

[0030] 1. First paper cutter; 11. First conveyor platform; 12. Second conveyor platform; 13. Cutter platform; 131. First chute; 132. First cutter; 133. First rack; 14. Extrusion block;

[0031] 2. Anti-tilt device; 21. Edge pressing block; 22. Limiting member; 221. First limiting block; 222. First limiting rod; 223. First spring; 224. Limiting mounting block; 23. Lifting transmission member; 231. First rotating block; 232. First belt; 233. Second rotating block; 234. Gear; 24. Extrusion rotating block; 241. Extrusion protrusion; 25. First grinding transmission member; 251. First grinding mounting block; 252. First U-shaped block; 253. Third rotating block; 254. First telescopic rod; 255. Second spring; 256. Second U-shaped block; 257. First limit rotating rod; 26. Grinding mounting member; 261. Grinding ring; 262. Second grinding mounting block; 263. Square connecting block; 264. Connecting round rod; 27. Second grinding transmission member; 271. Second limit rotating rod; 272. Third U-shaped block; 273. Third telescopic rod; 274. Third spring; 28. Clamping member; 281. First clamping rod; 282. First clamping block; 283. Clamping transmission block; 284. Clamping rotating rod; 285. Clamping telescopic rod; 286. Second clamping block; 287. Third clamping block; 288. Clamping threaded rod. DETAILED DESCRIPTION

[0032] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0033] like Figures 1 to 5As shown, a paper cutting mechanism for a printed paper cutting machine according to an embodiment of the present invention includes a first paper cutting machine 1. A first conveying platform 11 and a second conveying platform 12 for conveying paper are provided on both sides of the first paper cutting machine 1. A cutting table 13 and an extrusion block 14 are slidably mounted inside the first paper cutting machine 1. The cutting table 13 is used to cut paper, and the extrusion block 14 is used to clamp paper. An anti-tilt device 2 is provided on the extrusion block 14. The anti-tilt device 2 is used to polish paper scraps and glue adhered to the cutting table 13 after cutting.

[0034] like Figures 6 to 11 As shown, the anti-tilt device 2 includes a limit member 22, a lifting transmission member 23, an extrusion rotating block 24, a first grinding transmission member 25, a grinding mounting member 26, and a second grinding transmission member 27. The limit member 22 is slidably installed inside the extrusion block 14, and the extrusion rotating block 24 is rotatably installed at the bottom of the limit member 22. The lifting transmission members 23 are symmetrically provided at both ends of the extrusion rotating block 24. The first grinding transmission member 25 is fixedly installed on the top of the extrusion rotating block 24. The grinding mounting member 26 is connected to the first grinding transmission member 25, and the second grinding transmission member 27 is provided between the grinding mounting members 26. The rotation of the lifting transmission member 23 drives the extrusion rotating block 24 to rotate, and the rotation of the extrusion rotating block 24 causes the grinding mounting member 26 to contact the cutting side of the cutting table 13 for grinding.

[0035] It should be noted that the side of the cutting table 13 descends to cut the paper, but since a small amount of debris will be generated when the paper is cut, and the printed paper will be coated with glue during the production process, the glue after drying will also adhere to the side of the cutting table 13 when cutting, so an anti-tilt device 2 is provided on the extrusion block 14. When it is necessary to cut the paper, the paper is first transported to the bottom of the cutting table 13 and the extrusion block 14 through the first conveying platform 11 and the second conveying platform 12, and the extrusion block 14 is driven down by the hydraulic rod to clamp and limit the paper. At this time, the extrusion block 14 is in contact with the top of the paper, and the extrusion rotating block 24 is not in contact with the top of the paper. Then the hydraulic rod is started to drive the cutting table 13 to descend, thereby cutting the paper, and the side of the cutting table 13 is provided with a block and the cutting table 13 The cutting table 13 is fixedly installed, and then the extrusion limiter 22 is lowered by the cutting table 13. The limiter 22 drives the lifting transmission member 23 and the extrusion rotating block 24 as well as the first grinding transmission member 25 and the grinding mounting member 26 to descend synchronously, thereby extruding and cutting the cutting edge of the paper. When the cutting is completed, the cutting table 13 can be driven to rise. During the rising of the cutting table 13, the lifting transmission member 23 and the grinding mounting member 26 are driven by the motor to rotate, thereby driving the extrusion rotating block 24 to rotate, so that the extrusion rotating block 24 rotates 90 degrees, and the grinding mounting member 26 contacts the side cutting surface of the cutting table 13, thereby cleaning and grinding the debris and glue adhering to the cutting table 13, until the cutting table 13 rises to the top, then the motor drives the extrusion rotating block 24 to rotate, so that the extrusion rotating block 24 rotates to Figure 6 state, the cutting and cleaning of glue and paper scraps on the side of the cutting table 13 are completed, thereby improving the cutting accuracy of the cutting table 13 and reducing the probability of defective products during cutting.

[0036] like Figures 1 to 4 As shown and Figure 10 As shown, the anti-tilt device 2 includes an edge pressing block 21 fixedly installed on the side of the extrusion rotating block 24, and a clamping member 28 is provided inside the extrusion block 14. The clamping member 28 is used to squeeze the extrusion rotating block 24 when the limiting member 22 descends.

[0037] It should be noted that the edge pressing block 21 corresponds to the groove on the extrusion block 14, thereby increasing stability, and the clamping member 28 can squeeze the extrusion protrusion 241 fixedly installed on the top of the extrusion rotating block 24 when lifting, thereby improving the stability of the paper edge clamping.

[0038] like Figure 6As shown, the limiting member 22 includes a first limiting rod 222 symmetrically arranged and slidingly installed inside the extrusion block 14, a first limiting block 221 is fixedly installed on the top of the first limiting rod 222, a first spring 223 is arranged on the outside of the first limiting rod 222, and a limiting mounting block 224 is fixedly installed on the bottom of the first limiting rod 222, and an extrusion rotating block 24 is rotatably installed inside the limiting mounting block 224.

[0039] It should be noted that when the cutting table 13 descends, the block on the side of the cutting table 13 can be driven to squeeze the first limit block 221, thereby causing the limit mounting block 224, the extrusion rotating block 24 and the grinding mounting member 26 to descend, and the top of the extrusion rotating block 24 is provided with an extrusion protrusion 241, so when the first limit block 221 descends, the clamping member 28 can descend to squeeze the extrusion protrusion 241, thereby completing the effect of clamping the edge of the paper before cutting the paper.

[0040] like Figure 6 As shown, the lifting transmission member 23 includes a second rotating block 233 rotatably mounted on the side of the extrusion block 14 and symmetrically arranged. A gear 234 is fixedly mounted on the end of the second rotating block 233. A first belt 232 is arranged on the outside of the second rotating block 233. A first rotating block 231 is symmetrically arranged on the side of the extrusion rotating block 24. The outside of the first rotating block 231 is connected to the first belt 232. The first belt 232 is made of elastic material and is retractable.

[0041] It should be noted that the first belt 232 is made of elastic material. When the limit mounting block 224 drops, the first belt 232 can stretch, so that when the motor drives the gear 234 to rotate, the extrusion rotating block 24 can be driven to rotate. A torsion spring is provided at the connection position between the first rotating block 231 and the extrusion rotating block 24, so that the extrusion rotating block 24 can maintain the same position in a normal state. Figure 6 The first rotating block 231 is provided with a transmission structure inside, so that after the extrusion rotating block 24 rotates 90°, the side of the extrusion rotating block 24 is kept close to the extrusion block 14, and even if the gear 234 continues to rotate, the angle of the extrusion rotating block 24 will not change until the gear 234 stops rotating. Then, the extrusion rotating block 24 is reset under the action of the torsion spring. It is also possible that the gear 234 drives the first rotating block 231 and the extrusion rotating block 24 to rotate in a rotational connection. When the extrusion rotating block 24 rotates 90°, the first belt 232 is slidingly connected to the first rotating block 231, that is, the rotation of the first belt 232 no longer drives the first rotating block 231 to rotate.

[0042] like Figure 9As shown, the first grinding transmission member 25 includes a first grinding mounting block 251 fixedly mounted on the outer wall of the extrusion rotating block 24 and symmetrically arranged, a first U-shaped block 252 is rotatably mounted on the side of the first grinding mounting block 251, a third rotating block 253 is rotatably mounted inside the first U-shaped block 252, a first telescopic rod 254 is fixedly mounted on the side of the third rotating block 253, a second spring 255 is arranged on the outside of the first telescopic rod 254, a second U-shaped block 256 is fixedly mounted on the end of the first telescopic rod 254, a first limiting rotating rod 257 is rotatably mounted inside the second U-shaped block 256, and the first limiting rotating rod 257 is rotatably connected to the grinding mounting member 26.

[0043] It should be noted that when it is necessary to drive the grinding mount 26 to rotate, the motor can be used to drive the first grinding mount block 251 to rotate, thereby driving the grinding mount 26 to rotate, and the first grinding transmission member 25 is provided with a first telescopic rod 254, which can enable multiple grinding mounts 26 to adapt to the side of the cutting table 13. Even if the side of the cutting table 13 is bulged due to adhesion of glue and paper scraps, it will not affect the grinding function and effect of other positions.

[0044] like Figure 8 As shown, the grinding mounting member 26 includes a connecting round rod 264 rotatably mounted on the outside of the first limiting rotation rod 257, and a symmetrically arranged square connecting block 263 is fixedly mounted on the top of the connecting round rod 264, and a second grinding mounting block 262 is fixedly mounted on the outside of the square connecting block 263, and a grinding ring 261 is fixedly mounted on the outside of the second grinding mounting block 262. The outside of the connecting round rod 264 away from the side of the first grinding transmission member 25 is connected to the second grinding transmission member 27.

[0045] It should be noted that when the first grinding mounting block 251 rotates, the first telescopic rod 254 and the second U-shaped block 256 are driven to rotate, so that the first limiting rotation rod 257 drives the square connecting block 263 and the second grinding mounting block 262 and the grinding ring 261 to rotate, and the surface of the grinding ring 261 contacts the side of the cutting table 13, thereby grinding the glue and paper scraps adhered to the side of the cutting table 13.

[0046] like Figure 8As shown, the second grinding transmission member 27 includes a second limiting rotation rod 271 rotatably mounted on the outside of the connecting round rod 264, and a third U-shaped block 272 is rotatably mounted on the outside of the second limiting rotation rod 271. A third telescopic rod 273 is fixedly mounted on the side of the third U-shaped block 272, and a third spring 274 is provided on the outside of the third telescopic rod 273. A second limiting rotation rod 271 and a third U-shaped block 272 are provided at both ends of the third telescopic rod 273. The grinding mounting member 26 is connected through the second grinding transmission member 27, and the grinding mounting member 26 is connected to the extrusion rotating block 24 through the first grinding transmission member 25.

[0047] It should be noted that multiple grinding rings 261 are connected through the second grinding transmission member 27. Therefore, when one of the grinding mounts 26 rotates, it can drive multiple grinding mounts 26 to rotate, thereby grinding the side of the cutting table 13 to prevent glue and paper scraps from adhering to the side of the cutting table 13 and affecting the cutting effect.

[0048] like Figures 10 and 11 As shown, the clamping member 28 includes a first clamping rod 281 slidably installed inside the extrusion block 14, a first clamping block 282 is fixedly installed on the top of the first clamping rod 281, a clamping transmission block 283 is rotatably installed inside the first clamping block 282, a clamping rotating rod 284 is fixedly installed inside the extrusion block 14, the clamping transmission block 283 is rotatably installed on the outside of the clamping rotating rod 284, a clamping telescopic rod 285 is slidably installed inside the clamping transmission block 283, a second clamping block 286 is fixedly installed on the end of the clamping telescopic rod 285, a third clamping block 287 is rotatably installed inside the second clamping block 286, a clamping threaded rod 288 is threadedly installed on the internal thread of the third clamping block 287, and the clamping threaded rod 288 is threadedly installed inside the first limit block 221.

[0049] It should be noted that when the first limit block 221 descends, it can drive the clamping threaded rod 288 to rotate, and the rotation of the clamping threaded rod 288 can make the third clamping block 287 rise. Under the action of the clamping rotating rod 284, the first clamping block 282 and the first clamping rod 281 are driven to descend, so that the bottom of the first clamping rod 281 contacts the extrusion protrusion 241 at the top of the extrusion rotating block 24, thereby squeezing the extrusion protrusion 241, so that the extrusion rotating block 24 has the effect of clamping the edge of the paper.

[0050] like Figure 6 As shown, a torsion spring is provided at the connection position between the extrusion rotating block 24 and the limiting mounting block 224 so that the bottom of the extrusion rotating block 24 is in a vertical downward direction.

[0051] It should be noted that a torsion spring is provided at the connection position between the extrusion rotating block 24 and the limiting mounting block 224, so that the bottom of the extrusion rotating block 24 is in a vertical downward direction, so that when the cutting table 13 descends, the extrusion rotating block 24 can be driven to squeeze and limit the edge of the paper.

[0052] like Figures 1 to 5 ,like Figure 6 and Figure 10 As shown, a first slide groove 131 is provided inside the extrusion block 14, and a plurality of blocks are fixedly installed on the side of the cutting table 13 to slide inside the first slide groove 131. A first cutter 132 is fixedly installed on the lower part of the cutting table 13, and a first rack 133 is fixedly installed on the top of the first cutter 132. The first rack 133 is engaged with the gear 234 through a transmission gear. The gear 234 is a ratchet structure. An extrusion protrusion 241 is provided on the top of the extrusion rotating block 24, and the first clamping rod 281 is located directly above the extrusion protrusion 241.

[0053] It should be noted that the lifting and lowering of the cutter table 13 can drive the first cutter 132 and the first rack 133 to rise and fall, and the lifting and lowering of the first rack 133 can mesh with the gear 234 through the transmission gear, so that the extrusion rotating block 24 can be driven to rotate when the cutter table 13 rises, and the lowering of the cutter table 13 can drive the block installed on the side of the cutter table 13 to squeeze the first limit block 221, so that the first clamping rod 281 squeezes and limits the top of the extrusion protrusion 241, thereby facilitating the clamping of the edge of the paper.

[0054] The above describes the embodiments of this embodiment, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A paper cutting mechanism for a printed paper cutting machine, comprising a first paper cutting machine (1), characterized in that: A first conveying platform (11) and a second conveying platform (12) for conveying paper are provided on both sides of the first paper cutter (1); a cutting platform (13) and an extrusion block (14) are slidably installed inside the first paper cutter (1); the cutting platform (13) is used for cutting paper; the extrusion block (14) is used for supporting paper; an anti-tilting device (2) is provided on the extrusion block (14); the anti-tilting device (2) is used for grinding paper scraps and glue adhered to the cutting platform (13) after cutting; The anti-tilting device (2) comprises a limiter (22), a lifting transmission member (23), an extrusion rotating block (24), a first grinding transmission member (25), a grinding mounting member (26), and a second grinding transmission member (27). The limiter (22) is slidably mounted inside the extrusion block (14). The extrusion rotating block (24) is rotatably mounted at the bottom of the limiter (22). The lifting transmission members (23) are symmetrically arranged at both ends of the extrusion rotating block (24). The top of the extrusion rotating block (24) is fixedly mounted with a first grinding transmission member (25). The first grinding transmission member (25) is connected to the grinding mounting member (26). A second grinding transmission member (27) is arranged between the grinding mounting members (26). The lifting transmission member (23) rotates to drive the extrusion rotating block (24) to rotate. The extrusion rotating block (24) rotates so that the grinding mounting member (26) contacts the cutting side of the cutting table (13) for grinding.

2. The paper cutting mechanism for a printed paper cutting machine according to claim 1, characterized in that: The anti-tilt device (2) comprises an edge pressing block (21) fixedly mounted on the side of the extrusion rotating block (24); a clamping member (28) is provided inside the extrusion block (14); the clamping member (28) is used to squeeze the extrusion rotating block (24) when the limiting member (22) descends.

3. The paper cutting mechanism for a printed paper cutting machine according to claim 2, characterized in that: The limiting member (22) comprises a first limiting rod (222) symmetrically arranged and slidably mounted inside the extrusion block (14); a first limiting block (221) is fixedly mounted on the top of the first limiting rod (222); a first spring (223) is arranged outside the first limiting rod (222); a limiting mounting block (224) is fixedly mounted on the bottom of the first limiting rod (222); and an extrusion rotating block (24) is rotatably mounted inside the limiting mounting block (224).

4. The paper cutting mechanism for a printed paper cutting machine according to claim 3, characterized in that: The lifting transmission member (23) comprises a second rotating block (233) rotatably mounted on the side of the extrusion block (14) and symmetrically arranged thereon; a gear (234) is fixedly mounted on the end of the second rotating block (233); a first belt (232) is arranged on the outside of the second rotating block (233); a first rotating block (231) is symmetrically arranged on the side of the extrusion rotating block (24); the outside of the first rotating block (231) is connected to the first belt (232); and the first belt (232) is made of elastic material and is retractable.

5. The paper cutting mechanism for a printed paper cutting machine according to claim 4, characterized in that: The first grinding transmission member (25) comprises a first grinding mounting block (251) fixedly mounted on the outer wall of the extrusion rotating block (24) and symmetrically arranged; a first U-shaped block (252) is rotatably mounted on the side of the first grinding mounting block (251); a third rotating block (253) is rotatably mounted inside the first U-shaped block (252); a first telescopic rod (254) is fixedly mounted on the side of the third rotating block (253); a second spring (255) is arranged on the outside of the first telescopic rod (254); a second U-shaped block (256) is fixedly mounted on the end of the first telescopic rod (254); a first limiting rotating rod (257) is rotatably mounted inside the second U-shaped block (256); and the first limiting rotating rod (257) is rotatably connected to the grinding mounting member (26).

6. The paper cutting mechanism for a printed paper cutting machine according to claim 5, characterized in that: The grinding mounting member (26) includes a connecting rod (264) rotatably mounted on the outside of the first limiting rotation rod (257); a symmetrically arranged square connecting block (263) is fixedly mounted on the top of the connecting rod (264); a second grinding mounting block (262) is fixedly mounted on the outside of the square connecting block (263); a grinding ring (261) is fixedly mounted on the outside of the second grinding mounting block (262); and the outside of the connecting rod (264) away from the first grinding transmission member (25) is connected to the second grinding transmission member (27).

7. The paper cutting mechanism for a printed paper cutting machine according to claim 6, characterized in that: The second grinding transmission member (27) includes a second limiting rotation rod (271) rotatably mounted on the outside of the connecting round rod (264); a third U-shaped block (272) is rotatably mounted on the outside of the second limiting rotation rod (271); a third telescopic rod (273) is fixedly mounted on the side of the third U-shaped block (272); a third spring (274) is provided on the outside of the third telescopic rod (273); a second limiting rotation rod (271) and a third U-shaped block (272) are provided at both ends of the third telescopic rod (273); the grinding mounting member (26) is connected through the second grinding transmission member (27); and the grinding mounting member (26) is connected to the extrusion rotation block (24) through the first grinding transmission member (25).

8. The paper cutting mechanism for a printed paper cutting machine according to claim 7, characterized in that: The clamping member (28) includes a first clamping rod (281) slidably mounted inside the extrusion block (14), a first clamping block (282) fixedly mounted on the top end of the first clamping rod (281), a clamping transmission block (283) rotatably mounted inside the first clamping block (282), a clamping rotating rod (284) fixedly mounted inside the extrusion block (14), the clamping transmission block (283) rotatably mounted outside the clamping rotating rod (284), a clamping telescopic rod (285) slidably mounted inside the clamping transmission block (283), a second clamping block (286) fixedly mounted on the end of the clamping telescopic rod (285), a third clamping block (287) rotatably mounted inside the second clamping block (286), a clamping threaded rod (288) threadedly mounted inside the third clamping block (287), and the clamping threaded rod (288) threadedly mounted inside the first limit block (221).

9. The paper cutting mechanism for a printed paper cutting machine according to claim 8, characterized in that: A torsion spring is provided at the connection position between the extrusion rotating block (24) and the position-limiting mounting block (224), so that the bottom of the extrusion rotating block (24) is in a vertically downward direction.

10. The paper cutting mechanism for a printed paper cutting machine according to claim 9, characterized in that: A first slide groove (131) is provided inside the extrusion block (14); a plurality of blocks are fixedly installed on the side of the cutting table (13) and slide inside the first slide groove (131); a first cutter (132) is fixedly installed on the lower part of the cutting table (13); a first rack (133) is fixedly installed on the top of the first cutter (132); the first rack (133) is meshed with the gear (234) through a transmission gear; the gear (234) is a ratchet structure; an extrusion protrusion (241) is provided on the top of the extrusion rotating block (24); and the first clamping rod (281) is located directly above the extrusion protrusion (241).

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