Transverse cutting structure for paper cutter

Abstract

The utility model relates to the technical field of paper cutters, in particular to a transverse cutting structure for a paper cutter. The traction feeding mechanism, the transverse cutting mechanism and the detection mechanism are sequentially installed on the working frame, and the detection mechanism comprises a portal frame installed above the working frame, a camera installed at the upper end of the portal frame and a light source assembly installed below the camera. One side of the light source assembly is provided with a leading-in roller assembly used for leading in paper, the other side of the light source assembly is provided with a leading-out roller assembly used for leading out the paper, the leading-in roller assembly and the leading-out roller assembly are both installed on the working frame, and a first conveying belt is connected between the leading-in roller assembly and the leading-out roller assembly in a linkage mode. A flattening mechanism which enables paper to be tightly attached to the first conveying belt when the paper passes through the position below the light source assembly is arranged at the position, corresponding to the light source assembly, below the first conveying belt. After the prior art is improved, images shot by the camera during detection are clearer and more accurate, detection errors are not prone to occurring, and the cutting precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of paper cutters, in particular to a cross-cutting structure for paper cutters. Background Art

[0002] Paper cutters are traditional products used to handle paper cutting needs in the later stages of printing. They have evolved from mechanical paper cutters to tape-controlled paper cutters, and then to microcomputer-controlled, color-display, full-image operation-guided visual processing, and computer-aided cutting systems with external programming and editing of production data, making production preparation time shorter, cutting more accurate, labor-intensive, and safer to operate.

[0003] For example, a Chinese patent document with the authorization number CN215038103U discloses a paper cutter, including a conveyor belt, a paper feed rack capable of driving a paper roll to rotate is provided on the front side of the conveyor belt, a longitudinal cutting rack is provided between the conveyor belt and the paper feed rack, and the longitudinal cutting rack includes a longitudinal cutting rotating rack, a longitudinal cutting roller rotatably connected to the longitudinal cutting rotating rack, and a longitudinal cutting knife head connected to the top of the longitudinal cutting roller and having an adjustable height; a paper feed driving roller is connected to the top of the conveyor belt; a cross-cutting rack connected to the top of the conveyor belt is provided on the rear side of the paper feed driving roller, and a cross-cutting cylinder is connected to the top surface of the cross-cutting rack. A cutter is connected to the output shaft end of the cylinder; a paper discharge drive roller connected to the top of the conveyor belt is provided on the rear side of the cross-cutting frame, and a cutter slot opened on the conveyor belt is provided below the cutter; a paper pressing cylinder is connected to the front side of the top face of the cross-cutting frame, and the output shaft end of the paper pressing cylinder is horizontally connected to a paper pressing roller frame, on which a paper pressing roller is rotatably connected, a set of photoelectric switches are connected on the upper and lower sides of the cutter slot, and a paper storage box is provided behind the paper discharge drive roller; however, the above-mentioned paper cutter directly enters the paper storage box after paper cutting is completed, and is not capable of directly detecting paper defects and sizes for waste discharge.

[0004] Paper defect detection refers to displaying defects such as wrinkles, spots, holes, dust, streaks, uneven fibers, and different tones on paper by irradiating with light. For example, a Chinese patent document with authorization number CN209182256U discloses a new type of paper defect detection device for a paper cutter, including a bracket, a camera is fixed on the upper surface of the bracket, a direct light source is fixed on the inner side of the bracket close to the bottom of the camera, a reflective light source is fixed on the outer side of the direct light source, a detachable rotating rod is provided on the outer side of the bracket, a paper guide roll is fixed on the inner side wall of the rotating rod, and a paper collecting roll is provided on the side of the bracket away from the paper guide roll; however, when the cut paper is released from the paper guide roll and transmitted to the bottom of the direct light source and the reflective light source for camera shooting and recording, the paper is prone to bend and shape, resulting in an uneven paper surface, which affects the camera shooting effect and easily causes detection errors.

[0005] Therefore, it is necessary to improve the deficiencies in the above prior art. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a cross-cutting structure for a paper cutter in view of the deficiencies of the above-mentioned prior art, so as to solve the problem in the prior art that when the cut paper is released from the paper guide roller and transmitted to the bottom of the direct light source and the reflected light source for the camera to shoot and record, the paper is prone to bend in a fixed shape, resulting in an uneven paper surface, which affects the camera shooting effect and easily causes detection errors.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cross-cutting structure for a paper cutter, comprising a working frame, a traction feeding mechanism, a cross-cutting mechanism and a detection mechanism installed on the working frame in sequence, the detection mechanism comprising a gantry installed above the working frame, a camera installed at the upper end of the gantry and a light source assembly installed below the camera, one side of the light source assembly is provided with an import roller assembly for importing paper, and the other side is provided with an export roller assembly for exporting paper, the import roller assembly and the export roller assembly are both installed on the working frame, a first conveyor belt is linked between the import roller assembly and the export roller assembly, and a flattening mechanism is provided below the first conveyor belt at a position corresponding to the light source assembly so that the paper can be tightly attached to the first conveyor belt when passing below the light source assembly.

[0008] By adopting the above technical scheme, after the paper is sent to the cross-cutting mechanism for cutting by the traction feeding mechanism, it can be directly detected by the detection mechanism for paper defects and size, and the defective paper can be discharged in cooperation with the subsequent waste discharge device, thereby improving the quality of the finished product and reducing the burden of manual picking; when the paper is introduced onto the first conveyor belt through the introduction roller assembly and then transmitted to the bottom of the light source assembly, the paper is made to be tightly attached to the first conveyor belt through the flattening mechanism, and is not prone to shape bending and other unstable phenomena, thereby ensuring that the image of the camera is clearer and more accurate when shooting, and is not prone to detection errors; in addition, it can cooperate with the scale ruler on the paper to detect not only paper defects but also size (that is, whether the cutting is accurate).

[0009] The above technical solution is further configured as follows: the flattening mechanism includes a vent hole provided on the first conveyor belt and an air suction device installed below the first conveyor belt, and the air suction device can generate an airflow from top to bottom at the first conveyor belt.

[0010] By adopting the above technical solution, the suction device sucks air toward the bottom of the first conveyor belt through the vent hole, so that negative pressure is generated between the paper and the first conveyor belt and the paper is closely attached to the first conveyor belt.

[0011] The above technical solution is further configured as follows: the introduction roller assembly includes an introduction transmission roller and an introduction pressure roller located above the introduction transmission roller, the introduction pressure roller is provided with a first auxiliary pressure roller and a second auxiliary pressure roller distributed up and down on the side close to the light source assembly, the introduction pressure roller, the first auxiliary pressure roller and the second auxiliary pressure roller form a triangular structure and are sleeved with a second conveyor belt on the outside, the lower end surface of the second conveyor belt is close to the upper end surface of the first conveyor belt, the first conveyor belt is wrapped around the introduction transmission roller, the export roller assembly includes an export pressure roller and a third conveyor belt wrapped around the export pressure roller, an auxiliary transmission wheel is installed below the introduction transmission roller, and gears are provided on the ends of the introduction transmission roller, the introduction pressure roller and the export pressure roller on the side close to the auxiliary transmission wheel and are transmission-connected with the auxiliary transmission wheel through a transmission belt.

[0012] By adopting the above technical scheme, the first conveyor belt is driven by a power source far away from one end of the inlet roller to drive the inlet roller to rotate, and then drives the inlet roller, the outlet roller and the auxiliary transmission wheel in sequence through the transmission belt; the inlet roller drives the first auxiliary roller and the second auxiliary roller to rotate in sequence through the second conveyor belt; the paper is pulled and introduced onto the first conveyor belt through the cooperation of the first conveyor belt and the second conveyor belt and transmitted to the bottom of the light source assembly for detection.

[0013] The above technical solution is further configured as follows: movable brackets are slidably connected to the inner sides of both ends of the working frame, the import roller assembly, the export roller assembly, the light source assembly and the suction device are all installed on the movable bracket, and a movable cylinder connected to the movable bracket is installed on the working frame below the movable bracket, and a first auxiliary adjusting roller is also installed on the lower end of the movable bracket away from the import drive roller, and a second auxiliary adjusting roller installed on the working frame is provided below the first auxiliary adjusting roller, and the first conveyor belt can be S-shaped and wound between the first auxiliary adjusting roller and the second auxiliary adjusting roller, and a third auxiliary adjusting roller installed on the movable bracket is provided above the first auxiliary adjusting roller, and a fourth auxiliary adjusting roller installed on the working frame is provided above the third auxiliary adjusting roller, and the third conveyor belt can be S-shaped and wound between the third auxiliary adjusting roller and the fourth auxiliary adjusting roller.

[0014] By adopting the above technical scheme, when it is necessary to adjust the cutting mechanism of the paper cutter, the movable cylinder can be used to drive the movable bracket to slide relative to the working frame away from the cutting mechanism, which is convenient for operation; the first auxiliary adjusting roller and the second auxiliary adjusting roller wind the first conveyor belt in an S shape, and the third auxiliary adjusting roller and the fourth auxiliary adjusting roller wind the third conveyor belt in an S shape, so that after the movable bracket moves forward and backward, the total stroke of the conveyor belt remains unchanged and is always in a taut state.

[0015] The above technical solution is further configured as follows: the traction feeding mechanism includes a paper guiding assembly installed on one side of the working frame and a first paper feeding assembly and a second paper feeding assembly installed on the upper end of the working frame, the first paper feeding assembly includes a first power roller and a first paper pressing assembly and a driving motor capable of driving the first power roller, the second paper feeding assembly is located on the side of the first paper feeding assembly away from the paper guiding assembly, the second paper feeding assembly includes a second power roller and a second paper pressing assembly, one end of the first power roller is linked to the second power roller, the first paper pressing assembly includes a paper pressing roller and an adjusting member that is rotatably connected to both ends of the paper pressing roller, the adjusting member is hinged to the working frame at one end near the second paper pressing assembly, and an adjusting mechanism that can control the rotation of the adjusting member is provided at the other end, the second paper pressing assembly includes a rotating pressure rod, a paper pressing member installed on the side of the rotating pressure rod away from the paper pressing roller, and a supporting member that is rotatably connected to both ends of the rotating pressure rod, the supporting member is fixedly connected to the working frame, and a linkage mechanism is provided between the adjusting member and the rotating pressure rod near the end portion, which can enable the rotating pressure rod to rotate in the opposite direction when the adjusting member rotates.

[0016] By adopting the above technical scheme, when traction and conveying paper, the driving motor drives the first power roller to cooperate with the first paper pressing assembly from the paper winding roller through the paper feeding assembly to between the first power roller and the first paper pressing assembly to traction and convey the paper to between the second power roller and the second paper pressing assembly, and the second power roller and the second paper pressing assembly relay the traction and conveying and flatten the curved wrinkles in the paper before outputting it to the nearby paper cutting mechanism, thereby reducing the misalignment error during cutting, thereby improving the cutting accuracy; the adjusting member can be controlled to rotate and drive the paper pressing roller to rise and fall through the adjusting mechanism, that is, to achieve the purpose of adjusting the height of the paper pressing roller, and at the same time, the linkage mechanism can drive the rotating pressure rod to rotate in the opposite direction, and the rotating pressure rod drives the paper pressing member to rise and fall; since the paper pressing roller and the paper pressing member are both located on the opposite side of their respective rotation center axes, when they rotate in opposite directions at a small angle, they either approach each other (i.e., rise synchronously) or move away from each other (i.e., fall synchronously), thereby achieving the effect of being able to adjust the height of the paper pressing roller and the paper pressing member at the same time.

[0017] The above technical solution is further configured as follows: the adjusting mechanism includes an extension portion extending away from the hinged end of the adjusting member and the working frame, an adjusting cylinder arranged above the extension portion, and an adjusting spring arranged below the extension portion; the movable end of the adjusting cylinder can abut against the upper end of the extension portion; a limiting blind hole is provided at the lower end of the extension portion; a limiting guide column installed on the working frame is correspondingly provided below the limiting blind hole; the adjusting spring is sleeved on the limiting guide column and its upper end is higher than the upper end of the limiting guide column in an uncompressed state; both the adjusting spring and the limiting guide column can partially extend into the limiting blind hole; the linkage mechanism includes a first linkage gear installed at the hinged end of the adjusting member and the working frame and a second linkage gear circumferentially fixedly installed at the end of the rotating pressure rod; the first linkage gear and the second linkage gear can mesh with each other.

[0018] By adopting the above technical scheme, when it is necessary to lower the height of the paper pressing roller and the paper pressing member when cutting thinner paper, the movable end of the control adjusting cylinder is controlled to press down the extension part of the adjusting member, thereby causing the lower end of the extension part to squeeze the adjusting spring, and the adjusting member rotates downward at a small angle and drives the height of the paper pressing roller to decrease, while the height of the paper pressing member is also decreased under the action of the linkage mechanism; conversely, when the movable end of the control adjusting cylinder is retracted upward, the extension part of the adjusting member is lifted up under the elastic force of the adjusting spring to increase the height; when the adjusting member rotates, it drives the first linkage gear to rotate, and the first linkage gear drives the second linkage gear to rotate, thereby driving the rotating pressure rod to rotate, and the rotating pressure rod drives the paper pressing member to rotate, thereby achieving simultaneous adjustment of the height of the paper pressing roller and the paper pressing member.

[0019] The above technical solution is further configured as follows: the paper pressing member includes a fastening kit sleeved on the rotating pressure rod, a rotating member hinged to one end of the fastening kit close to the second power roller, and a pressure wheel rotatably installed on the rotating member, a negative pressure spring is provided between the fastening kit and the rotating member above the hinge point, a fastening adjustment member is provided at the upper end of the fastening kit, a limit adjustment member that can abut against the upper end of the rotating member is provided on the side of the fastening kit away from the pressure wheel, a support baffle is provided above the second power roller, a plurality of paper pressing through holes are evenly distributed on the support baffle, a raised ring is provided on the second power roller corresponding to each paper pressing through hole, and the raised ring can partially pass through the paper pressing through hole and extend out of the upper end surface of the support baffle to abut against the pressure wheel.

[0020] By adopting the above technical solution, the position and height of the fastening kit and the pressure wheel can be adjusted through the fastening adjustment part and then fixedly connected to the rotating pressure rod; when the paper is clamped between the pressure wheel and the second power roller, the rotating part can rotate at a small angle and squeeze the negative pressure spring to form a buffer margin; the limit adjustment part can limit the rotating part to prevent the pressure wheel from rotating downward excessively.

[0021] The above technical solution is further configured as follows: a first driving gear is provided at an end of the first power roller away from the driving motor, the first driving gear is connected to a first driven gear through a transmission belt, the first driven gear is rotatably connected to a rotating shaft connecting member passing through both sides of the working frame, a rotating shaft is rotatably connected to the middle part of the rotating shaft connecting member through a bearing, a second driven gear is provided at an end of the rotating shaft connecting member away from the first driven gear, both ends of the rotating shaft are respectively circumferentially fixedly connected to the first driven gear and the second driven gear, a third driven gear is provided at an end of the second power roller close to the second driven gear, and the second driven gear is connected to the third driven gear through a transmission belt.

[0022] By adopting the above technical solution, the driving motor drives the first power roller to rotate, and the first power roller drives the first driven gear, the second driven gear, and the third driven gear in turn, and then drives the second power roller to rotate, thereby realizing that one driving motor drives the first power roller and the second power roller at the same time.

[0023] The above technical solution is further configured as follows: connecting brackets fixedly mounted on the working frame are respectively provided at both ends of the second power roller, a first strip groove is provided on the side of the working frame for fastening the connecting bracket by bolts, a second strip groove is provided on the lower end of the support member for fastening the support member to the connecting bracket by bolts, the through hole in the middle of the rotating shaft connecting member for mounting the rotating shaft is eccentrically arranged, and a tensioning wheel is provided on the side of the working frame for adjusting the tightness of the transmission belt between the first driving gear and the first driven gear.

[0024] By adopting the above technical scheme, the height of the connecting bracket can be adjusted by screwing the bolts at the first strip grooves on both side surfaces of the working frame, so as to adjust the height of the second power roller. Similarly, the height of the support member and the rotating pressure rod can be adjusted through the second strip groove so that the first linkage gear and the second linkage gear can remain engaged; the tightness of the transmission belt between the second driven gear and the third driven gear can be adjusted by rotating the rotating shaft connecting member. Due to the eccentric setting of the rotating shaft through-hole, the height of the rotating shaft can be changed; the tightness of the transmission belt between the first driven gear and the second driven gear is adjusted by a tensioning wheel.

[0025] The beneficial effects achieved by the utility model are as follows: the paper under the light source component is unfolded flat and stable, the image taken by the camera is clearer and more accurate when shooting, and detection errors are not easy to occur, and it can cooperate with the scale ruler on the paper to not only detect paper defects but also detect the size at the same time (that is, whether the cutting is accurate); in the process of paper traction and transportation, by setting a second paper feeding component, the curved wrinkles in the paper are flattened, thereby improving the cutting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the detection mechanism in the embodiment of the utility model;

[0028] Figure 3 yes Figure 2 Partial view at point A in the middle;

[0029] Figure 4 It is a schematic diagram of the related structures of the introduction roller assembly and the outlet roller assembly in the embodiment of the utility model;

[0030] Figure 5 It is a schematic diagram of the relevant structure of the movable bracket in the embodiment of the utility model;

[0031] Figure 6 It is a structural schematic diagram of a light source assembly in an embodiment of the utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the traction feeding mechanism in the embodiment of the utility model. Figure 1 ;

[0033] Figure 8 yes Figure 7 Partial view at point B in the middle;

[0034] Fig. 9 This is a schematic diagram of the structure of the traction feeding mechanism in the embodiment of the utility model. Figure 2 ;

[0035] Fig.10 yes Fig. 9 Partial view at center C;

[0036] Fig.11 yes Fig. 9 Partial view at D in the middle;

[0037] Fig.12 It is an exploded schematic diagram of the relevant structure of the adjustment mechanism of the embodiment of the utility model;

[0038] Fig.13 It is a structural schematic diagram of a paper pressing member in an embodiment of the utility model;

[0039] Fig.14 It is a structural schematic diagram of the cross-cutting mechanism in the embodiment of the utility model;

[0040] Fig.15 It is a structural schematic diagram of the paper guiding assembly in the embodiment of the utility model. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] like Figure 1-7As shown in the figure, a cross-cutting structure for a paper cutter comprises a working frame 1, a traction feeding mechanism 2, a cross-cutting mechanism 3 and a detection mechanism 4 which are sequentially installed on the working frame 1, the detection mechanism 4 comprises a gantry 41 installed above the working frame 1, a camera 42 installed at the upper end of the gantry 41 and a light source assembly 43 installed below the camera 42, one side of the light source assembly 43 is provided with an introduction roller assembly 44 for introducing paper, and the other side is provided with an export roller assembly 45 for exporting paper, the introduction roller assembly 44 and the export roller assembly 45 are both installed on the working frame 1, a first conveyor belt 46 is linkedly connected between the introduction roller assembly 44 and the export roller assembly 45, a flattening mechanism is provided below the first conveyor belt 46 corresponding to the position of the light source assembly 43 so that the paper can be closely attached to the first conveyor belt 46 when passing below the light source assembly 43, the flattening mechanism comprises an air vent 460 arranged on the first conveyor belt 46 and an air suction device 47 installed below the first conveyor belt 46, the air suction device 47 can generate an airflow from top to bottom at the first conveyor belt 46.

[0043] The introduction roller assembly 44 includes an introduction transmission roller 441 and an introduction pressure roller 442 located above the introduction transmission roller 441. The introduction pressure roller 442 is provided with a first auxiliary pressure roller 443 and a second auxiliary pressure roller 444 distributed up and down on the side close to the light source assembly 43. The introduction pressure roller 442, the first auxiliary pressure roller 443 and the second auxiliary pressure roller 444 form a triangular structure and a second conveyor belt 445 is sleeved on the outer side. The lower end surface of the second conveyor belt 445 is close to the upper end surface of the first conveyor belt 46. The first conveyor belt 46 is wound around the introduction transmission roller 441. The export roller assembly 45 includes an export pressure roller 451 and a third conveyor belt 452 wound around the export pressure roller 451. An auxiliary transmission wheel 446 is installed below the introduction transmission roller 441. Gears are set on the ends of the introduction transmission roller 441, the introduction pressure roller 442 and the export pressure roller 451 on the side close to the auxiliary transmission wheel 446 and are transmission-connected to the auxiliary transmission wheel 446 through a transmission belt.

[0044] The inner side surfaces at both ends of the working frame 1 are slidably connected with movable brackets 5, and the introduction roller assembly 44, the export roller assembly 45, the light source assembly 43 and the suction device 47 are all installed on the movable bracket 5. The working frame 1 is provided with a movable cylinder 51 connected to the movable bracket 5 below the movable bracket 5, and the lower end of the movable bracket 5 away from the introduction transmission roller 441 is also provided with a first auxiliary adjustment roller 52, and a second auxiliary adjustment roller 53 installed on the working frame 1 is provided below the first auxiliary adjustment roller 52, and the first conveyor belt 46 can be wound between the first auxiliary adjustment roller 52 and the second auxiliary adjustment roller 53 in an S shape, and a third auxiliary adjustment roller installed on the movable bracket 5 is provided above the first auxiliary adjustment roller 52. Roller 54, a fourth auxiliary adjusting roller 55 installed on the working frame 1 is provided above the third auxiliary adjusting roller 54, and the third conveyor belt 452 can be wound in an S shape between the third auxiliary adjusting roller 54 and the fourth auxiliary adjusting roller 55; when it is necessary to adjust the cross-cutting mechanism 3, the movable support 5 can be driven by the movable cylinder 51 to slide relative to the working frame 1 away from the cross-cutting mechanism 3, which is convenient for operation; the first auxiliary adjusting roller 52 and the second auxiliary adjusting roller 53 wind the first conveyor belt 46 in an S shape, and the third auxiliary adjusting roller 54 and the fourth auxiliary adjusting roller 55 wind the third conveyor belt 452 in an S shape, so that after the movable support 5 moves back and forth, the total stroke of the conveyor belt remains unchanged and is always in a taut state.

[0045] The light source assembly 43 includes two fill light sources 431 . A strip-shaped gap 430 is left between the two fill light sources 431 for the camera 42 to shoot. A plurality of cooling fans 432 are disposed on the upper ends of the fill light sources 431 .

[0046] The traction feeding mechanism 2 includes a paper guiding assembly 21 installed on one side of the working frame 1 and a first paper feeding assembly 22 and a second paper feeding assembly 23 installed on the upper end of the working frame 1. The first paper feeding assembly 22 includes a first power roller 221 and a first paper pressing assembly and a driving motor 222 capable of driving the first power roller 221. The second paper feeding assembly 23 is located on the side of the first paper feeding assembly 22 away from the paper guiding assembly 21. The second paper feeding assembly 23 includes a second power roller 231 and a second paper pressing assembly. One end of the first power roller 221 is linked to the second power roller 231. The first power roller 221 is connected to the second power roller 231. The paper pressing assembly includes a paper pressing roller 223 and an adjusting member 24 rotatably connected to both ends of the paper pressing roller 223. The adjusting member 24 is hinged to the working frame 1 at one end close to the second paper pressing assembly, and an adjusting mechanism 25 capable of controlling the rotation of the adjusting member 24 is provided at the other end. The second paper pressing assembly includes a rotating pressing rod 232, a plurality of paper pressing members 233 installed on the side of the rotating pressing rod 232 away from the paper pressing roller 223, and a supporting member 234 rotatably connected to both ends of the rotating pressing rod 232. The supporting member 234 is fixedly connected to the working frame 1, and the adjusting member 24 is connected to the rotating pressing rod. A linkage mechanism 26 is provided between the ends of the adjusting member 24 and the pressing rod 232, which can rotate in the opposite direction when the adjusting member 24 rotates; the adjusting mechanism 25 includes an extension portion 251 extending away from the hinged end of the adjusting member 24 and the working frame 1, an adjusting cylinder 252 provided above the extending portion 251, and an adjusting spring 253 provided below the extending portion 251, the movable end of the adjusting cylinder 252 can abut against the upper end of the extending portion 251, a limiting blind hole 2510 is provided at the lower end of the extending portion 251, and a corresponding installation spring 253 is provided below the limiting blind hole 2510. A limit guide column 254 is installed on the working frame 1, and the adjusting spring 253 is sleeved on the limit guide column 254 and its upper end is higher than the upper end of the limit guide column 254 in the uncompressed state. The adjusting spring 253 and the limit guide column 254 can both partially extend into the limit blind hole 2510; the linkage mechanism 26 includes a first linkage gear 261 installed at the hinged end of the adjusting member 24 and the working frame 1 and a second linkage gear 262 circumferentially fixedly installed at the end of the rotating pressure rod 232, and the first linkage gear 261 and the second linkage gear 262 can engage with each other.

[0047] The paper pressing member 233 includes a fastening kit 2331 sleeved on the rotating pressure rod 232, a rotating member 2332 hinged to one end of the fastening kit 2331 close to the second power roller 231, and a pressing wheel 2333 rotatably mounted on the rotating member 2332. A negative pressure spring 2334 is provided above the hinge point between the fastening kit 2331 and the rotating member 2332. A fastening adjustment member 2335 is provided at the upper end of the fastening kit 2331. The fastening kit 2331 is far away from the second power roller 231. A limit adjustment member 2336 that can abut against the upper end of the rotating member 2332 is provided on the side away from the pressure wheel 2333; a support baffle 27 is provided above the second power roller 231, and a plurality of paper pressing holes 270 are evenly distributed on the support baffle 27. A protruding ring 2311 is provided on the second power roller 231 corresponding to each paper pressing hole 270. The protruding ring 2311 can partially pass through the paper pressing hole 270 and extend out of the upper end surface of the support baffle 27 to abut against the pressure wheel 2333.

[0048] The first power roller 221 is provided with a first driving gear 224 at one end away from the driving motor 222, and the first driving gear 224 is connected to a first driven gear 225 through a transmission belt, and the first driven gear 225 is rotatably connected to a rotating shaft connecting member 226 that passes through both sides of the working frame 1, and a rotating shaft 2261 is rotatably connected to the middle part of the rotating shaft connecting member 226 through a bearing, and a second driven gear 227 is provided at one end of the rotating shaft connecting member 226 away from the first driven gear 225, and the first driven gear 225 and the second driven gear 227 are fixedly connected at both ends of the rotating shaft 2261 in a circumferential direction, respectively, and a third driven gear 227 is provided at one end of the second power roller 231 close to the second driven gear 227 The second driven gear 228 and the second driven gear 227 are connected to the third driven gear 228 through a transmission belt; both ends of the second power roller 231 are respectively provided with connecting brackets 6 fixedly installed on the working frame 1, and the side of the working frame 1 is provided with a first strip groove 60 for fastening the connecting bracket 6 by bolts, and the lower end of the support member 234 is provided with a second strip groove 2340 for fastening the support member 234 to the connecting bracket 6 by bolts, and the through hole in the middle of the rotating shaft connecting member 226 for installing the rotating shaft 2261 is eccentrically set, and the side of the working frame 1 is provided with a tensioning wheel 229 for adjusting the tightness of the transmission belt between the first driving gear 224 and the first driven gear 225.

[0049] The lower end of the support baffle 27 is fixedly connected to a support beam 28, and both ends of the support beam 28 are fixedly installed on the inner side surfaces of the two ends of the working frame 1. The limiting guide column 254 is fixedly installed on the upper end surface of the support beam 28. The side surfaces at both ends of the support beam 28 are provided with a third strip groove 280 for fastening the support beam 28 to the working frame 1 through bolts.

[0050] The paper feeding assembly 21 includes a first paper feeding roller 211 installed on the side of the working frame 1 and a second paper feeding roller 212 installed on the upper end of the working frame 1 near the first paper feeding assembly 22. A first cross bar 213 installed on the working frame 1 is provided above the second paper feeding roller 212, and a photoelectric sensor 214 is slidably installed on the first cross bar 213. A second cross bar 215 installed on the working frame 1 is provided on the side of the first cross bar 213 close to the cross-cutting mechanism 3. A paper pressing cylinder 216 for pressing the paper when the machine is stopped is installed on the second cross bar 215. A toggle slider 217 that can be moved electrically is also slidably installed on the side of the second cross bar 215 close to the first cross bar 213. One end of the toggle slider 217 is connected to the photoelectric sensor 214 and can drive the photoelectric sensor 214 to slide horizontally along the first cross bar 213.

[0051] The cross-cutting mechanism 3 includes an upper cutting roller 31, a lower cutting roller 32 and a cross-cutting motor 33. The output end of the cross-cutting motor 33 is connected to the upper cutting roller 31 and the lower cutting roller 32 through gear transmission. Cutters are installed on the outer circumference of the upper cutting roller 31 and the lower cutting roller 32.

[0052] In the above embodiment, after the paper is sent to the cross-cutting mechanism 3 for cutting by the traction feeding mechanism 2, it can be directly detected by the detection mechanism 4 for paper defects and size, and the defective paper can be discharged in cooperation with the subsequent waste discharge device, thereby improving the quality of the finished product and reducing the burden of manual picking; when the paper is introduced onto the first conveyor belt 46 through the introduction roller assembly 44 and then transmitted to the bottom of the light source assembly 43, the paper is made to be tightly attached to the first conveyor belt 46 through the flattening mechanism, and it is not easy to cause fixed bending and other unstable phenomena, thereby ensuring that the image of the camera 42 is clearer and more accurate when shooting, and it is not easy to have detection errors; in addition, it can cooperate with the scale ruler on the paper to detect not only paper defects but also size (that is, whether the cutting is accurate); when traction and conveying the paper, from the paper winding roller through the paper guiding assembly 21 to the first power roller 221 and the first paper pressing assembly, the driving motor 222 drives the first power roller 221 to cooperate with the first paper pressing assembly The assembly pulls and conveys the paper to between the second power roller 231 and the second paper pressing assembly, and the second power roller 231 and the second paper pressing assembly relay the pulling and conveying, and flattens the curved wrinkles in the paper before outputting it to the nearby paper cutting mechanism, thereby reducing the misalignment error during cutting, thereby improving the cutting accuracy; the adjustment member 24 can be controlled to rotate through the adjustment mechanism 25 and drive the paper pressing roller 223 to move up and down, that is, to achieve the purpose of adjusting the height of the paper pressing roller 223, and at the same time, the linkage mechanism 26 can drive the rotating pressure rod 232 to rotate in the opposite direction, and the rotating pressure rod 232 drives the paper pressing member 233 to move up and down; since the paper pressing roller 223 and the paper pressing member 233 are both located on the opposite side of their respective rotation center axes, when they rotate in opposite directions at a small angle, they either approach each other (i.e., rise synchronously) or move away from each other (i.e., fall synchronously), thereby achieving the effect of being able to simultaneously adjust the height of the paper pressing roller 223 and the paper pressing member 233.

Claims

1. A cross-cutting structure for a paper cutter, comprising a working frame, a traction feeding mechanism, a cross-cutting mechanism and a detection mechanism sequentially mounted on the working frame, the detection mechanism comprising a gantry mounted above the working frame, a camera mounted on the upper end of the gantry and a light source assembly mounted below the camera, one side of the light source assembly is provided with an introduction roller assembly for introducing paper, and the other side is provided with an export roller assembly for exporting paper, the introduction roller assembly and the export roller assembly are both mounted on the working frame, characterized in that: A first conveyor belt is linked between the inlet roller assembly and the outlet roller assembly, and a flattening mechanism is provided below the first conveyor belt at a position corresponding to the light source assembly, which enables the paper to be in close contact with the first conveyor belt when passing under the light source assembly.

2. A cross-cutting structure for a paper cutter according to claim 1, characterized in that: The flattening mechanism comprises an air vent arranged on the first conveyor belt and an air suction device installed below the first conveyor belt, and the air suction device can generate an airflow from top to bottom at the first conveyor belt.

3. A cross-cutting structure for a paper cutter according to claim 2, characterized in that: The introduction roller assembly includes an introduction transmission roller and an introduction pressure roller located above the introduction transmission roller. The introduction pressure roller is provided with a first auxiliary pressure roller and a second auxiliary pressure roller distributed up and down on the side close to the light source assembly. The introduction pressure roller, the first auxiliary pressure roller and the second auxiliary pressure roller form a triangular structure and are sleeved with a second conveyor belt on the outside. The lower end surface of the second conveyor belt is close to the upper end surface of the first conveyor belt. The first conveyor belt is wound on the introduction transmission roller. The export roller assembly includes an export pressure roller and a third conveyor belt wrapped around the export pressure roller. An auxiliary transmission wheel is installed below the introduction transmission roller. Gears are provided on the ends of the introduction transmission roller, the introduction pressure roller and the export pressure roller close to the auxiliary transmission wheel and are connected to the auxiliary transmission wheel through a transmission belt.

4. A cross-cutting structure for a paper cutter according to claim 3, characterized in that: The inner sides of both ends of the working frame are slidably connected with movable brackets, and the import roller assembly, the export roller assembly, the light source assembly and the suction device are all installed on the movable bracket. The working frame is equipped with a movable cylinder connected to the movable bracket below the movable bracket, and a first auxiliary adjusting roller is also installed at the lower end of the movable bracket away from the import drive roller. A second auxiliary adjusting roller installed on the working frame is provided below the first auxiliary adjusting roller, and the first conveyor belt can be S-shaped and wrapped between the first auxiliary adjusting roller and the second auxiliary adjusting roller. A third auxiliary adjusting roller installed on the movable bracket is provided above the first auxiliary adjusting roller, and a fourth auxiliary adjusting roller installed on the working frame is provided above the third auxiliary adjusting roller. The third conveyor belt can be S-shaped and wrapped between the third auxiliary adjusting roller and the fourth auxiliary adjusting roller.

5. A cross-cutting structure for a paper cutter according to any one of claims 1 to 4, characterized in that: The traction feeding mechanism includes a paper guiding assembly installed on one side of the working frame and a first paper feeding assembly and a second paper feeding assembly installed on the upper end of the working frame, the first paper feeding assembly includes a first power roller and a first paper pressing assembly and a driving motor capable of driving the first power roller, the second paper feeding assembly is located on the side of the first paper feeding assembly away from the paper guiding assembly, the second paper feeding assembly includes a second power roller and a second paper pressing assembly, one end of the first power roller is linked to the second power roller, the first paper pressing assembly includes a paper pressing roller and an adjusting member that is rotatably connected to both ends of the paper pressing roller, the adjusting member is hinged to the working frame at one end near the second paper pressing assembly, and an adjusting mechanism that can control the rotation of the adjusting member is provided at the other end, the second paper pressing assembly includes a rotating pressure rod, a paper pressing member installed on the side of the rotating pressure rod away from the paper pressing roller, and a supporting member that is rotatably connected to both ends of the rotating pressure rod, the supporting member is fixedly connected to the working frame, and a linkage mechanism is provided between the adjusting member and the rotating pressure rod near the end portion, which can enable the rotating pressure rod to rotate in the opposite direction when the adjusting member rotates.

6. A cross-cutting structure for a paper cutter according to claim 5, characterized in that: The adjusting mechanism comprises an extension portion extending away from the hinged end of the adjusting member and the working frame, an adjusting cylinder arranged above the extension portion and an adjusting spring arranged below the extension portion, the movable end of the adjusting cylinder can abut against the upper end of the extension portion, a limiting blind hole is arranged at the lower end of the extension portion, a limiting guide column installed on the working frame is correspondingly arranged below the limiting blind hole, the adjusting spring is sleeved on the limiting guide column and its upper end is higher than the upper end of the limiting guide column in an uncompressed state, and both the adjusting spring and the limiting guide column can partially extend into the limiting blind hole; the linkage mechanism comprises a first linkage gear installed at the hinged end of the adjusting member and the working frame and a second linkage gear circumferentially fixedly installed at the end of the rotating pressure rod, and the first linkage gear and the second linkage gear can mesh with each other.

7. A cross-cutting structure for a paper cutter according to claim 6, characterized in that: The paper pressing member includes a fastening kit sleeved on the rotating pressure rod, a rotating member hinged to one end of the fastening kit close to the second power roller, and a pressure wheel rotatably installed on the rotating member, a negative pressure spring is provided between the fastening kit and the rotating member above the hinge point, a fastening adjustment member is provided at the upper end of the fastening kit, a limit adjustment member that can abut against the upper end of the rotating member is provided on the side of the fastening kit away from the pressure wheel, a support baffle is provided above the second power roller, a plurality of paper pressing through holes are evenly distributed on the support baffle, and a protruding ring is provided on the second power roller corresponding to each paper pressing through hole, and the protruding ring can partially pass through the paper pressing through hole and extend out of the upper end surface of the support baffle to abut against the pressure wheel.

8. The cross-cutting structure for a paper cutter according to claim 7, characterized in that: A first driving gear is provided at the end of the first power roller away from the driving motor, the first driving gear is connected to a first driven gear through a transmission belt, the first driven gear is rotatably connected to a rotating shaft connecting member passing through both sides of the working frame, a middle part of the rotating shaft connecting member passes through a bearing and is rotatably connected to a rotating shaft, a second driven gear is provided at the end of the rotating shaft connecting member away from the first driven gear, both ends of the rotating shaft are respectively circumferentially fixedly connected to the first driven gear and the second driven gear, a third driven gear is provided at the end of the second power roller close to the second driven gear, and the second driven gear is connected to the third driven gear through a transmission belt.

9. A cross-cutting structure for a paper cutter according to claim 8, characterized in that: Both ends of the second power roller are respectively provided with connecting brackets fixedly mounted on the working frame, the side of the working frame is provided with a first strip groove for fastening the connecting bracket by bolts, the lower end of the support member is provided with a second strip groove for fastening the support member to the connecting bracket by bolts, the through hole in the middle of the rotating shaft connecting member for mounting the rotating shaft is eccentrically set, and the side of the working frame is provided with a tensioning wheel for adjusting the tightness of the transmission belt between the first driving gear and the first driven gear.

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