A gravure printing production line

Abstract

The invention discloses a gravure printing production line, which belongs to the technical field of gravure printing. It integrates functions such as printing, drying, cutting and packing, and can realize automatic printing, thereby reducing the degree of manual participation and saving labor costs. Moreover, the whole process is highly automated and compactly connected, which improves printing efficiency, thereby greatly reducing actual costs and bringing higher market competitiveness to enterprises. In addition, in the printing process, a specially designed double-layer scraper structure is used to realize the recovery of high-quality ink and the discharge of surface solidified ink, thereby fundamentally solving the problem of reduced ink quality. In addition, for the technical problem of insufficient downward pressure on the middle part of the embossing roller, the present application refers to the rotary kiln roller structure, and a roller mechanism is also added above the embossing roller, thereby effectively solving the technical problems of uneven ink thickness and unclear ink on the substrate.

Description

Technical Field

[0001] The invention relates to the technical field of gravure printing, and in particular to a gravure printing production line. Background Art

[0002] Gravure printing is a commonly used printing method at present. The printing process is as follows: first, ink is coated on the surface of the printing plate roller, and then a special scraper is used to remove the ink from the blank part except the gravure, so that the ink only remains in the gravure of the image part, and then under greater pressure, the ink is transferred to the surface of the substrate to obtain a printed product.

[0003] At present, gravure printing technology is relatively mature, but it is basically limited to a single process, that is, direct gravure printing is performed using a gravure printing machine. Subsequent drying and cutting processes require additional processing or the construction of related equipment, which obviously leads to low efficiency. Coupled with labor costs, the actual cost of gravure printing is currently high, which seriously affects the competitiveness of enterprises.

[0004] In addition, another factor that seriously affects printing quality is that after long-term use, the ink caking phenomenon is serious, the ink volume is reduced, and the printing is unclear. The reason is that during the long-term operation of the equipment, the friction force between the plate roller and the impression roller is large, which causes the temperature of the plate roller surface to rise. The ink close to the surface of the plate roller quickly solidifies after contacting the plate roller. The solidified ink is scraped off by the scraper and falls back into the ink cartridge. Over time, the quality of the ink in the ink cartridge is significantly reduced. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a gravure printing production line, which can realize functions such as printing, drying, cutting, and packing, and through special design can significantly improve the ink quality and printing quality, thereby greatly improving production efficiency.

[0006] To achieve the above-mentioned object, the present invention provides a gravure printing production line, comprising a frame, a roll-up frame, and a reel-up frame, wherein the roll-up frame is used to install a printing roll formed by curling a printing material waiting for printing, and the reel-up frame is used to collect the remaining material after width cutting; the frame is respectively equipped with: a first conveying roller group, an ink cartridge, a embossing roller, a printing plate roller, a doctor blade, an electric heating plate, a second conveying roller group, an air blowing plate, a third conveying roller group, and a width cutting mechanism between the roll-up frame and the reel-up frame;

[0007] The ink cartridge is filled with ink for printing; the plate roller is placed above the ink cartridge. When working, the rotating plate roller is partially immersed in the ink in the ink cartridge to fill the ink into the gravure on the plate roller; the impression roller is arranged opposite to the plate roller and is used to press the substrate against the plate roller;

[0008] In order to effectively recover the usable ink and remove the solidified ink at the same time, the scraper blade sought in the present application is specially designed, wherein the scraper blade comprises a main scraper, a connecting block and an auxiliary scraper, wherein the connecting block is clamped between the main scraper and the auxiliary scraper, and the main scraper, the connecting block and the auxiliary scraper are sequentially penetrated and connected to the frame by bolts; when working, the auxiliary scraper approaches the outer wall of the printing plate roller to scrape off the surface ink of the ink layer covering the surface of the printing plate roller and make it flow back into the ink cartridge along the side wall of the auxiliary scraper; as the printing plate roller rotates further, the ink remaining on the surface of the printing plate roller is scraped off by the main scraper arranged close to the surface of the printing plate roller In addition; an ink drain groove is provided on the end face of the connecting block located in the interlayer space between the main scraper and the auxiliary scraper, and the ink scraped off by the main scraper flows along the side wall of the main scraper into the ink drain groove and is discharged through both ends of the ink drain groove; through the above design, on the one hand, the surface ink of the ink layer covering the surface of the printing plate roller has not been affected by the temperature rise in a short period of time, and the ink quality has not changed. This part of the ink will be scraped off and recycled by the auxiliary scraper; on the other hand, the inner layer of ink remaining after scraping is closely attached to the surface of the printing plate roller, and is quickly solidified due to the temperature rise. This part of the ink is scraped off and discharged by the main scraper; this effectively prevents the deteriorated ink from flowing back into the ink cartridge and affecting the ink quality.

[0009] The electric heating plate is equipped with a heating wire, which generates heat when powered on, thereby drying the printed substrate. The dried substrate enters the inner side of the blowing plate, and the blowing plate blows air to the substrate to cool it down. The cooled substrate enters the width cutting mechanism, which cuts the excess width of the substrate, and the remaining material after cutting and the cut substrate pass through the fourth conveying roller group. After passing through the fourth conveying roller group, the remaining material is wound around the winding roller of the winding frame.

[0010] The above structure integrates printing, drying, cutting and collecting, which significantly improves the automation level of the equipment.

[0011] Preferably, the gravure printing production line provided by the present invention, in order to further improve the degree of automation, wherein the cut substrate passes through the fifth conveying roller group and enters above the cutting support plate and is in contact with the top surface of the cutting support plate, and a cutting knife is also installed above the cutting support plate and the substrate, the cutting knife is used to cut the substrate according to a certain length, and the cutting knife is fixed on the cutting telescopic shaft of the cutting cylinder; the cut substrate passes through the sixth conveying roller group and enters the top surface of the receiving plate, and a plurality of conveying rollers are installed under the receiving plate, and the top surface of the conveying rollers is not lower than the top surface of the receiving plate, a mechanical arm is installed next to the receiving plate, and a suction cup is installed on the mechanical arm, and the suction cup can suck the substrate on the receiving plate, and then the mechanical arm transfers the substrate to a preset storage box to complete the packing.

[0012] Preferably, the gravure printing production line provided by the present invention takes into account that the function of the embossing roller is to press the substrate against the printing plate roller, and the pressure points of the embossing roller are only at the two ends. Since the span of the embossing roller is large, the pressure force of the embossing roller in the middle part on the substrate is not as strong as that at the two ends, resulting in thick ink at the two ends of the substrate and thin ink in the middle. When the printed products are stacked and packaged, it is found that the thickness of the outer packaging is significantly thicker than that of the central part after multiple stacking; in addition, the ink at the bottom of the concave mark in the middle area of ​​the printing plate roller is insufficiently stressed for a long time, resulting in long-term accumulation of ink at the bottom, which eventually needs to be manually removed, and the printing quality of the substrate is unstable; for this reason, the present application provides a support roller above the embossing roller. Mechanism, the roller mechanism includes a crossbeam, a sliding unit, a telescopic unit, a bracket and at least two groups of driven rollers; the crossbeam is mounted on the frame, and the crossbeam is arranged along the axial direction of the embossing roller; the sliding unit is slidably connected to the crossbeam; the telescopic unit is fixed to the sliding unit; the two groups of driven rollers are symmetrically arranged at one end of the bracket, and the other end of the bracket is fixedly connected to the telescopic unit; through this structure, if the embossing roller is located between the two ends and the embossing roller has unclear embossing, it is necessary to adjust the sliding unit to move to the corresponding position, and control the telescopic unit to press the driven roller against the surface of the embossing roller, thereby compensating for the defect of insufficient downward pressure in the middle part of the embossing roller.

[0013] Preferably, the gravure printing production line provided by the present invention, wherein the width cutting mechanism includes a lower support box, a dust cover, and at least two cutting wheels, the cutting wheels are installed between the lower support box and the dust cover, and the inner side of the dust cover is connected to one end of the dust suction pipe, the other end of the dust suction pipe is connected to the air inlet of the vacuum pump, the exhaust port of the vacuum pump is connected to the air inlet of the filter, a filter element is installed inside the filter, and the exhaust port of the filter is connected to the inner side of the blowing plate, so that the filtered airflow enters the blowing plate to blow air to the substrate; through this circulation structure, only one vacuum pump is needed to simultaneously achieve vacuum filtration and blowing cooling.

[0014] Preferably, in the gravure printing production line provided by the present invention, the width cutting mechanism further comprises a spline shaft, the spline shaft is provided with splines distributed along the axis, the cutting wheel is mounted on the spline shaft so as to be axially slidable but not circumferentially rotatable relative to the spline shaft, clamping plates are respectively mounted on both end surfaces of the cutting wheel, the bottoms of the two clamping plates are fixed on the slider, the slider is mounted in the slide groove and can slide in the length direction of the slide groove; the slider is also assembled with the screw rod by threaded engagement, and one end of the screw rod is connected to the output shaft of the adjusting motor;

[0015] One end of the two spline shafts is respectively fixedly assembled with the pulleys, the two pulleys are connected by a synchronous belt to form a belt transmission mechanism, and the other end of one of the spline shafts is fixedly connected with the output shaft of the cutting motor.

[0016] Preferably, the gravure printing production line provided by the present invention, wherein a detection groove is provided at the bottom of the slide groove, a conductive plate is installed at the bottom of the detection groove, one end of the conductive plate is conductively connected to the wire, and a sliding arc groove is provided on the side of the conductive plate facing the slider, the sliding arc groove is slidably and conductively connected to the conductive block, the conductive block is fixed to one end of the detection convex block, and the other end of the detection convex block is fixed to the slider;

[0017] The conductive block is conductively connected to the power supply through another wire, so that a loop is formed between the power supply, the conductive block and the conductive plate. A resistor is installed in series on the loop, and a voltmeter is installed in parallel at both ends of the resistor. The voltmeter is used to detect the change in the resistor voltage. The signal end of the voltmeter is communicatively connected to the signal end of the industrial computer, so that the voltage value signal is input into the industrial computer.

[0018] Preferably, in the gravure printing production line provided by the present invention, thrust ball bearings are respectively installed on both sides of the cutting wheel, the shaft rings of the thrust ball bearings are respectively assembled with the spline shafts, and the seat rings are tightly attached to or assembled and fixed with the clamping plates, and there are two clamping plates which are respectively tightly attached to or fixed with the seat rings of the two thrust ball bearings.

[0019] Preferably, the gravure printing assembly line provided by the present invention, wherein the slide groove is arranged in the slide groove block, the slide groove block is fixed in the lower support box, the bottom of the lower support box is assembled and fixed with the width cutting telescopic shaft of the width cutting cylinder, and the width cutting telescopic shaft passes through the width cutting limit plate and is assembled with the width cutting cylinder.

[0020] Preferably, in the gravure printing production line provided by the present invention, chip collecting plates are fixed to both ends of the slider and the two clamping plates, respectively, and the two chip collecting plates, the slider and the two clamping plates respectively form a chip collecting groove with an opening on the top.

[0021] Preferably, in the gravure printing production line provided by the present invention, the chip collecting groove is connected to one end of the chip removal pipe, and the other end of the chip removal pipe is connected to the air inlet of the air exhauster through a hose;

[0022] The dust cover is provided with a plurality of through holes, which are located directly above the spline shaft and the tops of the through holes are connected with the inside of the dust box, and the inside of the dust box is also connected with the dust pipe through the bronchial tube.

[0023] The beneficial effects of the present invention are as follows: the present invention integrates printing, drying, cutting, packing and other functions, can realize automatic printing, thereby reducing manual participation and saving labor costs, and the whole process is highly automated and compactly connected, which improves printing efficiency, thereby greatly reducing actual costs and bringing higher market competitiveness to enterprises; in addition, in the printing process, through the specially designed double-layer scraper structure, the recovery of high-quality ink and the discharge of surface solidified ink are realized, which fundamentally solves the problem of reduced ink quality; in addition, for the technical problem of insufficient downward pressure force in the middle part of the embossing roller, the present application refers to the rotary kiln roller structure, and a roller mechanism is also added above the embossing roller, thereby effectively solving the technical problems of uneven ink thickness and unclear ink on the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the gravure printing production line of the present invention;

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0027] Figure 4 It is a schematic diagram of the assembly position of the ink scraper and the printing plate roller in the gravure printing production line of the present invention when the ink scraper is in working state;

[0028] Figure 5 It is a schematic diagram of the structure of the ink scraper in the gravure printing production line of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the width cutting mechanism of the gravure printing production line of the present invention;

[0030] Figure 7 It is a schematic diagram of the orientation change structure of the width cutting mechanism in the gravure printing production line of the present invention;

[0031] Figure 8 It is a cross-sectional view of the width cutting mechanism in the gravure printing production line of the present invention;

[0032] Fig. 9 It is a cross-sectional view showing the change of the orientation of the width cutting mechanism in the gravure printing production line of the present invention.

[0033] Among them: 1. Frame; 2. Unwinding frame; 3. Winding frame; 4. Printing roll; 5. First conveying roller group; 6. Ink cartridge; 7. Impression roller; 8. Plate roller; 9. Scraper; 10. Electric heating plate; 11. Second conveying roller group; 12. Blowing plate; 13. Third conveying roller group; 14. Cutting mechanism; 15. Main scraper; 16. Connecting block; 17. Secondary scraper; 18. Ink discharge slot; 19. Fourth conveying roller group; 20. Fifth conveying roller group; 21. Cutting support plate; 22. Cutting knife; 23. Cutting cylinder; 24. Sixth conveying roller group; 25. Receiving plate; 26. Conveyor roller; 27. Mechanical arm; 28. Suction cup; 29. ​​Lower support box; 30. Dust cover; 31. Cutting wheel; 3 2. Dust suction pipe; 33. Vacuum pump; 34. Filter; 35. Spline shaft; 36. Thrust ball bearing; 37. Clamp; 38. Slider; 39. Slide; 40. Detection slot; 41. Conductive plate; 42. Sliding arc slot; 43. Conductive block; 44. Detection bump; 45. Screw; 46. Adjustment motor; 47. Pulley; 48. Synchronous belt; 49. Cutting motor; 50. Slide block; 51. Cutting width cylinder; 52. Cutting width telescopic shaft; 53. Chip collecting plate; 54. Chip collecting slot; 55. Chip discharge pipe; 56. Through hole; 57. Dust suction box; 58. Bronchial tube; 59. Substrate; 60. Beam; 61. Sliding unit; 62. Telescopic unit; 63. Bracket; 64. Driven roller. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solution 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;

[0035] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] See also Figures 1 to 9The present embodiment provides a gravure printing production line, including a frame 1, a roll-out frame 2, and a reel-up frame 3. The roll-out frame 2 is used to install a printing roll 4 that is waiting to be printed and is formed by curling the printing material, and the reel-up frame 3 is used to collect the remaining material after being cut; the frame 1 is respectively installed with: a first conveying roller group 5, an ink cartridge 6, a embossing roller 7, a printing plate roller 8, a doctor blade 9, an electric heating plate 10, a second conveying roller group 11, a blowing plate 12, a third conveying roller group 13, and a cutting mechanism 14 between the roll-out frame 2 and the reel-up frame 3;

[0037] The ink cartridge 6 is filled with ink for printing; the plate roller 8 is placed above the ink cartridge 6. When working, the rotating plate roller 8 is partially immersed in the ink in the ink cartridge 6 to fill the ink into the gravure on the plate roller 8; the impression roller 7 is arranged opposite to the plate roller 8 and is used to press the substrate onto the plate roller 8;

[0038] like Figure 4 and Figure 5 As shown, the ink scraper 9 includes a main scraper 15, a connecting block 16 and an auxiliary scraper 17, wherein the connecting block 16 is clamped between the main scraper 15 and the auxiliary scraper 17, and the main scraper 15, the connecting block 16 and the auxiliary scraper 17 are sequentially penetrated and connected to the frame 1 by bolts; when working, the auxiliary scraper 17 is close to the outer wall of the plate roller 8, and is used to scrape off the surface ink of the ink layer covered on the surface of the plate roller 8 and make it flow back to the ink cartridge 6 along the side wall of the auxiliary scraper 17; as the plate roller 8 further rotates, the ink remaining on the surface of the plate roller 8 is scraped off by the main scraper 15 arranged close to the surface of the plate roller 8; an ink discharge groove 18 is provided on the end face of the connecting block 16 located in the interlayer space between the main scraper 15 and the auxiliary scraper 17, and the ink scraped off by the main scraper 15 flows into the ink discharge groove 18 along the side wall of the main scraper 15 and is discharged through both ends of the ink discharge groove 18;

[0039] like Figure 2 As shown, a roller mechanism is arranged above the embossing roller 7, and the roller mechanism includes a crossbeam 60, a sliding unit 61, a telescopic unit 62, a bracket 63 and at least two groups of driven rollers 64; the crossbeam 60 is mounted on the frame 1, and the crossbeam 60 is arranged along the axial direction of the embossing roller 7; the sliding unit 61 is slidably connected to the crossbeam 60; the telescopic unit 62 is fixed to the sliding unit 61; the two groups of driven rollers 64 are symmetrically arranged at one end of the bracket 63, and the other end of the bracket 63 is fixedly connected to the telescopic unit 62.

[0040] The electric heating plate 10 is equipped with a heating wire, which generates heat when powered on, thereby drying the printed substrate. The dried substrate enters the inner side of the blowing plate 12, and the blowing plate 12 blows air to the substrate to cool it down. The cooled substrate enters the width cutting mechanism 14, and the width cutting mechanism 14 cuts the excess width of the substrate, and the remaining material after cutting and the cut substrate pass through the fourth conveying roller group 19. After passing through the fourth conveying roller group 19, the remaining material is wound around the winding roller of the winding frame 3.

[0041] The cut printing material passes through the fifth conveying roller group 20 and enters above the cutting support plate 21 and fits against the top surface of the cutting support plate 21. A cutting knife 22 is also installed above the cutting support plate 21 and the printing material. The cutting knife 22 is used to cut the printing material according to a certain length, and the cutting knife 22 is fixed on the cutting telescopic shaft of the cutting cylinder 23. After the cutting cylinder 23 is inhaled, it can drive the cutting telescopic shaft to move in the axial direction, thereby driving the cutting knife 22 to cut the printing material.

[0042] The cut substrate passes through the sixth conveyor roller group 24 and enters the top surface of the receiving plate 25, and a plurality of conveyor rollers 26 are installed under the receiving plate 25. The top surface of the conveyor rollers 26 is not lower than the top surface of the receiving plate 25, so that the conveyor rollers 26 can continue to convey the cut substrate. A mechanical arm 27 is installed next to the receiving plate 25, and a suction cup 28 is installed on the mechanical arm 27. The suction cup 28 can suck the substrate on the receiving plate 25, and then the substrate is transferred to a preset storage box by the mechanical arm 27 to complete the packing.

[0043] This design automates the entire process from printing to packing, with almost no human involvement, which can greatly reduce labor costs. The machine can run 24 hours a day, which means its output and efficiency are higher, greatly reducing printing costs and increasing corporate profits.

[0044] Preferably, the width cutting mechanism comprises a lower support box 29, a dust cover 30, and at least two cutting wheels 31, wherein the cutting wheels 31 are installed between the lower support box 29 and the dust cover 30, and the inner side of the dust cover 30 is connected to one end of a dust suction pipe 32, and the other end of the dust suction pipe 32 is connected to the air inlet of an air extractor 33, and the exhaust port of the air extractor 33 is connected to the air inlet of a filter 34, and a filter element is installed inside the filter 34 to filter large solid particles in the air flow, and the exhaust port of the filter 34 is connected to the inner side of the blowing plate 12, so that the filtered air flow enters the blowing plate 12 to blow air to the substrate. This realizes the reuse of air flow, thereby reducing energy consumption.

[0045] See also Figure 6 to Figure 9The width cutting mechanism also includes a spline shaft 35, on which splines are arranged along the axis, and the cutting wheel 31 is mounted on the spline shaft 35 so as to be axially slidable but not circumferentially rotatable relative to the spline shaft 35, and thrust ball bearings 36 are respectively mounted on both sides of the cutting wheel 31, and the shaft rings of the thrust ball bearings 36 are respectively assembled with the spline shaft 35, and the seat rings are tightly or fixedly assembled with the clamping plates 37, and the clamping plates 37 have two pieces and are tightly or fixedly assembled with the seat rings of the two thrust ball bearings 36, respectively, and the bottom of the two clamping plates 37 They are all fixed on the slider 38, the slider 38 is installed in the slide groove 39 and can slide in the length direction of the slide groove 39, the slide groove 39 is provided with a detection groove 40 at the bottom, a conductive plate 41 is installed at the bottom of the detection groove 40, one end of the conductive plate 41 is conductively connected to the wire, and a sliding arc groove 42 is provided on the side of the conductive plate 41 facing the slider 38, the sliding arc groove 42 is slidably and conductively connected to the conductive block 43, the conductive block 43 is fixed to one end of the detection protrusion 44, and the other end of the detection protrusion 44 is fixed on the slider 38;

[0046] The conductive block 43 is conductively connected to the power supply through another wire, so that a loop is formed between the power supply, the conductive block 43, and the conductive plate 41. A resistor is installed in series on this loop, and a voltmeter is installed in parallel at both ends of the resistor. The voltmeter is used to detect the change in the resistor voltage. The signal end of the voltmeter is communicatively connected to the signal end of the industrial computer, so that the voltage value signal is input into the industrial computer.

[0047] A structure similar to a sliding rheostat is formed between the conductive block 43 and the conductive plate 41. The longer the distance between the conductive block 43 and the conductive plate 41, the lower the voltage of the resistor. The two are in direct proportion. Therefore, the distance between the conductive block and the conductive plate, that is, the position of the slider 38 in the slide groove 39, can be converted by the voltage of the resistor, thereby calculating the position of the cutting wheel 31 relative to the slide groove 39, so as to facilitate positioning of the cutting wheel 31.

[0048] The slider 38 is also assembled with the screw rod 45 by threaded engagement, and one end of the screw rod 45 is connected to the output shaft of the adjusting motor 46, so that the adjusting motor 46 can drive the screw rod 45 to rotate in a circle, and when the screw rod 45 rotates, it can drive the slider 38 to move in its axial direction, thereby adjusting the position of the cutting wheel 31, that is, adjusting the cutting width position on the substrate.

[0049] One end of the two spline shafts 35 are respectively assembled and fixed to the pulleys 47, and the two pulleys 47 are connected by a synchronous belt 48 to form a belt transmission mechanism. The other end of one of the spline shafts 35 is connected and fixed to the output shaft of the cutting motor 49. The cutting motor 49 can drive the spline shaft 35 to rotate in a circle, thereby driving the cutting wheel 31 to rotate to cut the printed material.

[0050] The slide groove 39 is arranged in the slide groove block 50, and the slide groove block 50 is fixed in the lower support box 29. The bottom of the lower support box 29 is assembled and fixed with the width cutting telescopic shaft 52 of the width cutting cylinder 51. The width cutting telescopic shaft 52 passes through the width cutting limit plate 53 and is assembled with the width cutting cylinder 51. The width cutting cylinder 51 can drive the width cutting telescopic shaft 52 to reciprocate in the axial direction.

[0051] When in use, the screw 45 can be driven to rotate by adjusting the motor 46, so as to adjust the position of the cutting wheel 31, and then the cutting motor 49 is started to drive the cutting wheel 31 to rotate; then the cutting width cylinder 51 is started to push the lower support box 29 upward until the cutting wheel 31 can pass through the substrate, thereby ensuring that the cutting wheel 31 cuts through the substrate, and the chips generated during cutting are sucked into the filter 34 through the dust suction pipe 32 for filtration.

[0052] Preferably, since the conductive plate 41 is in an exposed state, the dust cover 30 and the dust pipe 32 cannot completely suck away the chips, which will cause the chips to fall on the conductive plate 41, thereby affecting the use. In this regard, the applicant has made the following improvements:

[0053] Chip collecting plates 53 are fixed on both ends of the slider 38 and the two clamping plates 37 respectively. The two chip collecting plates 53 and the slider 38 and the two clamping plates 37 respectively form a chip collecting groove 54 with an open top. During cutting, all chips are gathered in the chip collecting groove 54 and will not fall onto the conductive plate 41 or into the slide groove 39.

[0054] Furthermore, the chip collecting groove 54 is connected to one end of the chip discharge pipe 55, and the other end of the chip discharge pipe 55 is connected to the air inlet of the air exhauster 33 through a hose, so that the chips in the chip collecting groove 54 are transported to the filter 34 for filtration. This design can prevent excessive chips from affecting the cutting wheel 31.

[0055] Preferably, the dust cover 30 is provided with a plurality of through holes 56, which are located just above the spline shaft 35 and the top of the through hole 56 is connected to the inside of the dust box 57, and the inside of the dust box 57 is also connected to the dust pipe 32 through the bronchial tube 58. Through the design of the dust box 57, negative pressure is gathered in the through hole 56, which increases the dust collection effect.

[0056] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0057] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A gravure printing production line, comprising a frame, a roll-unwinding frame and a roll-up frame, wherein the roll-unwinding frame is used to install a roll of a printed material that is waiting to be printed and is formed by curling the printed material, and the roll-up frame is used to collect the remaining material after being cut to width; wherein the characteristics are: The frame is respectively installed with: a first conveying roller group, an ink cartridge, an impression roller, a printing plate roller, a doctor blade, an electric heating plate, a second conveying roller group, an air blowing plate, a third conveying roller group, and a width cutting mechanism between the unwinding frame and the rewinding frame; The ink cartridge is filled with ink for printing; the plate roller is placed above the ink cartridge, and when working, the rotating plate roller is partially immersed in the ink in the ink cartridge to fill the ink into the gravure on the plate roller; The pressing roller is arranged opposite to the printing plate roller and is used to press the substrate onto the printing plate roller; The ink scraper comprises a main scraper, a connecting block and an auxiliary scraper, wherein the connecting block is clamped between the main scraper and the auxiliary scraper, and the main scraper, the connecting block and the auxiliary scraper are sequentially penetrated and connected to the frame by bolts; when working, the auxiliary scraper is close to the outer wall of the printing plate roller to scrape off the surface ink of the ink layer covered on the surface of the printing plate roller and make it flow back to the ink cartridge along the side wall of the auxiliary scraper; As the plate roller further rotates, the ink remaining on the surface of the plate roller is scraped off by the main scraper arranged close to the surface of the plate roller; an ink discharge groove is provided on the end surface of the connecting block located in the interlayer space between the main scraper and the auxiliary scraper, and the ink scraped off by the main scraper flows along the side wall of the main scraper into the ink discharge groove and is discharged from both ends of the ink discharge groove; The electric heating plate is equipped with a heating wire, which is energized to generate heat, thereby drying the printed substrate. The dried substrate enters the inner side of the blowing plate, and the blowing plate blows air to the substrate to cool it down. The cooled substrate enters the width cutting mechanism, and the width cutting mechanism cuts the excess width of the substrate. The remaining material after cutting and the cut substrate pass through the fourth conveying roller group. After passing through the fourth conveying roller group, the remaining material is wound with the winding roller of the winding frame. The cut substrate passes through the fifth conveyor roller group and enters the top of the cutting support plate and fits with the top surface of the cutting support plate. A cutting knife is also installed above the cutting support plate and the substrate. The cutting knife is used to cut the substrate according to a certain length, and the cutting knife is fixed on the cutting telescopic shaft of the cutting cylinder; the cut substrate passes through the sixth conveyor roller group and enters the top surface of the receiving plate, and a plurality of conveyor rollers are installed under the receiving plate, and the top surface of the conveyor roller is not lower than the top surface of the receiving plate. A mechanical arm is installed next to the receiving plate, and a suction cup is installed on the mechanical arm. The suction cup can suck the substrate on the receiving plate tightly, and then the mechanical arm transfers the substrate to a preset storage box to complete the boxing; A roller support mechanism is arranged above the embossing roller, and the roller support mechanism includes a crossbeam, a sliding unit, a telescopic unit, a bracket, and at least two groups of driven rollers; the crossbeam is mounted on the frame, and the crossbeam is arranged along the axial direction of the embossing roller; the sliding unit is slidably connected to the crossbeam; the telescopic unit is fixed to the sliding unit; the two groups of driven rollers are symmetrically arranged at one end of the bracket, and the other end of the bracket is fixedly connected to the telescopic unit; The width cutting mechanism comprises a lower support box, a dust cover, and at least two cutting wheels, wherein the cutting wheels are installed between the lower support box and the dust cover, and the inner side of the dust cover is connected to one end of a dust suction pipe, the other end of the dust suction pipe is connected to an air inlet of an air extractor, the exhaust port of the air extractor is connected to an air inlet of a filter, a filter element is installed inside the filter, and the exhaust port of the filter is connected to the inner side of a blowing plate, so that the filtered airflow enters the blowing plate to blow air to the substrate; The width cutting mechanism also includes a spline shaft, on which splines are arranged along the axis, and the cutting wheel is mounted on the spline shaft so as to be axially slidable but not circumferentially rotatable relative to the spline shaft, and clamping plates are respectively mounted on both end surfaces of the cutting wheel, and the bottoms of the two clamping plates are fixed on the slider, which is mounted in the slide groove and can slide in the length direction of the slide groove; the slider is also assembled with the screw rod by threaded engagement, and one end of the screw rod is connected to the output shaft of the adjusting motor; One end of the two spline shafts is respectively fixedly assembled with the pulleys, the two pulleys are connected by a synchronous belt to form a belt transmission mechanism, and the other end of one of the spline shafts is fixedly connected with the output shaft of the cutting motor; A detection groove is provided at the bottom of the slide groove, a conductive plate is installed at the bottom of the detection groove, one end of the conductive plate is conductively connected to the wire, and a sliding arc groove is provided on the side of the conductive plate facing the slider, the sliding arc groove is slidably and conductively connected to the conductive block, the conductive block is fixed to one end of the detection convex block, and the other end of the detection convex block is fixed to the slider; The conductive block is conductively connected to the power source through another wire, so that a loop is formed between the power source, the conductive block and the conductive plate. A resistor is installed in series on the loop, and a voltmeter is installed in parallel at both ends of the resistor. The voltmeter is used to detect the change of the resistor voltage. The signal end of the voltmeter is communicatively connected to the signal end of the industrial computer, so that the voltage value signal is input into the industrial computer; Thrust ball bearings are installed on both sides of the cutting wheel. The shaft rings of the thrust ball bearings are respectively assembled with the spline shafts, and the seat rings are closely attached to or assembled and fixed with the clamping plates. There are two clamping plates, which are closely attached to or fixed with the seat rings of the two thrust ball bearings respectively. The slide slot is arranged in the slide slot block, the slide slot block is fixed in the lower support box, the bottom of the lower support box is assembled and fixed with the width cutting telescopic shaft of the width cutting cylinder, and the width cutting telescopic shaft passes through the width cutting limit plate and is assembled with the width cutting cylinder; Chip collecting plates are fixed on both ends of the slider and the two clamping plates, and the two chip collecting plates, together with the slider and the two clamping plates, respectively, form a chip collecting groove with an opening at the top; The chip collecting groove is connected with one end of the chip removal pipe, and the other end of the chip removal pipe is connected with the air inlet of the vacuum pump through a hose; a plurality of through holes are arranged on the dust collection cover, the through holes are located directly above the spline shaft and the top of the through holes is connected with the inside of the dust collection box, and the inside of the dust collection box is also connected with the dust collection pipe through a bronchial tube.

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