CN210759704U

CN210759704U - Flexographic printing press

Info

Publication number: CN210759704U
Application number: CN201921007218.4U
Authority: CN
Inventors: 曲宗凯; 王坤
Original assignee: Qingdao Xinkaishun Packaging Co ltd
Current assignee: Qingdao Xinkaishun Packaging Co ltd
Priority date: 2019-06-29
Filing date: 2019-06-29
Publication date: 2020-06-16
Anticipated expiration: 2029-06-29

Abstract

The utility model relates to a flexographic printing machine, which comprises a frame, an unwinding roller, a printing device, an ink box, an ink scraper, a dryer, a winding roller and a static removing device; the static electricity removing device comprises a brush frame, a brush, a pushing spring, a threaded rod, a nut and a supporting rod; the brush holder and the support rod are fixed on the frame; the brush comprises a back plate and brush bristles fixed on the back plate; the back plate is connected to the brush holder in a sliding manner and can slide towards or away from the supporting rod; the axis of the threaded rod is parallel to the sliding direction of the brush, one end of the threaded rod is fixed with the back plate, and the other end of the threaded rod penetrates through the brush holder; the nut is connected to one end of the screw penetrating through the brush frame; the pushing spring is arranged between the back plate and the brush holder and is in a compressed state; the holes on the brush frame corresponding to the threaded rods allow the threaded rods to slide along the axis. The utility model discloses after the brush wearing and tearing, can continue to keep the cooperation relation with the backing roll through adjusting messenger's brush, the brush that does not need frequent renewal has prolonged the life of brush.

Description

Flexographic printing press

Technical Field

The utility model relates to a printing machine, in particular to flexographic printing machine.

Background

Flexographic printing is a printing mode of using a flexographic plate and transferring ink through an anilox roller, and currently, the flexographic printing is dominant in packaging printing; the flexible plate printing machine uses fluid ink with strong fluidity, the ink is transferred to the image-text part of the printing plate by the anilox roller and is inked, then printing pressure is exerted by the stamping roller, the ink on the printing plate is transferred to a printing stock, and finally, the printing process is finished after drying.

In the printing process, static electricity on a printing stock is transferred into ink through a printing plate, so that the ink is charged with static electricity, the ink is charged with static electricity when being transferred to the surface of a printing object, and meanwhile, the ink and the printing stock are also charged with static electricity, the static electricity or neutralization discharge or like charges repel, so that normal printing cannot be realized, ink spots or ink whiskers occur, and the printing quality is influenced. For this reason, a conventional flexographic printing machine is generally provided with a static eliminator for eliminating static electricity from a printing material after unwinding the printing material and before passing through the printing unit.

The existing static removing device comprises a supporting roll and a hair brush, wherein the supporting roll and the hair brush are fixedly arranged, and the hair brush on the hair brush is abutted against the supporting roll. When the device is used, the printing stock slides through the support rod by adhering to the support rod, and static electricity on the printing stock is removed through the hairbrush.

The existing static removing device has a problem in the using process, the brush hair on the brush is continuously abraded in the using process and finally cannot touch the surface of a printing stock, and the brush needs to be replaced at this time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexographic printing machine, it can make its cooperation relation that continues to keep and the backing roll through adjusting after the brush wearing and tearing, and then just need not frequently change the brush of new, has prolonged the life of brush.

The above object of the present invention can be achieved by the following technical solutions: a flexographic printing machine comprises a frame, an unwinding roller, a printing device, an ink box, an ink scraper, a dryer, a winding roller and a static eliminating device; the unwinding roller, the ink box, the dryer and the winding roller are arranged on the rack; the printing device comprises an anilox roller, a printing plate roller and a stamping roller, wherein the peripheral surface of the anilox roller is in contact with the peripheral surface of the printing plate roller, and the printing plate roller can be driven to rotate when rotating; the lower part of the anilox roller is immersed in the ink box; the ink scraper comprises a scraping blade, the scraping blade is abutted against the surface of the anilox roller, and the static removing device comprises a brush frame, a brush, a pushing spring, a threaded rod, a nut and a supporting rod; the brush holder and the support rod are fixed on the frame; the brush comprises a back plate and brush bristles fixed on the back plate; the back plate is connected to the brush holder in a sliding manner and can slide towards or away from the supporting rod; the axis of the threaded rod is parallel to the sliding direction of the brush, one end of the threaded rod is fixed with the back plate, and the other end of the threaded rod penetrates through the brush holder; the nut is connected to one end of the screw penetrating through the brush frame; the pushing spring is arranged between the back plate and the brush holder and is in a compressed state; the holes on the brush frame corresponding to the threaded rods allow the threaded rods to slide along the axis.

By adopting the technical scheme, during use, ink is added into the ink box to enable the ink to submerge the lower part of the anilox roller, the printing plate roller, the stamping roller and the winding roller rotate under the driving of the motor, the rolled strip-shaped printing stock is sleeved on the unwinding roller and fixed, the strip-shaped printing stock is printed through the printing device, then drying is completed through the dryer, and finally winding is completed at the winding roller. When the printing stock passes through the printing device, printing is carried out between the printing plate and the stamping roller, the printing plate roller drives the anilox roller to rotate, the anilox roller dips ink in the ink box when rotating, redundant ink is scraped by the ink scraping knife abutted to the surface of the anilox roller, then the ink is transferred to the printing plate by the anilox roller, and the printing plate roller and the stamping roller jointly act to press the ink onto the printing stock.

Passing the substrate through a static eliminating device after unwinding and before passing through a printing device; when the printing stock passes through the static removing device, the printing stock slides by adhering to the support rod and then passes through the hairbrush; the pushing spring is in a compressed state, the brush is pushed to the printing stock, and the brush can be continuously supplied when worn, so that the brush can continuously brush the surface of the printing stock and remove static electricity on the surface of the printing stock; and (4) the printed material with the static removed enters a printing device to finish printing. When the bristles are worn for a long time and cannot touch the surface of a printed object, the adjusting nuts enable the threaded rods to push the brushes towards the printed object until the bristles are extruded on the printed object again under the action of the pushing springs, and therefore the brushes do not need to be frequently replaced, and the service life of the brushes is prolonged.

The utility model discloses further set up to: the brush holder comprises a holder rod and a slide rail; one end of the hack lever is fixedly connected to the frame, and the two slide rails are respectively arranged at the two ends of the hack lever; the sliding rail is vertical to the frame rod, and one end of the sliding rail is fixedly connected with the frame rod; the sliding rails are provided with sliding grooves, and the two ends of the back plate are respectively inserted into the sliding grooves of the two sliding rails and can slide.

Through adopting above-mentioned technical scheme, the sliding fit of brush and brush yoke is comparatively smooth.

The utility model discloses further set up to: the pushing spring is sleeved on the threaded rod.

Through adopting above-mentioned technical scheme, propelling movement spring can more effectual output elastic force.

The utility model discloses further set up to: the ink box is provided with a stirring device for stirring ink.

By adopting the technical scheme, in actual use, sometimes the ink in the ink box is not used for one time, if the ink box is placed for a period of time, the ink has the phenomena of precipitation, layering and the like, so that the printing effect is influenced when the ink box is continuously used next time; set up agitating unit and can stir printing ink earlier before using, guaranteed the homogeneity of printing ink.

The utility model discloses further set up to: the stirring device comprises a stirring rod and a lifting buckle; one end of the stirring rod is positioned in the ink box, and the other end of the stirring rod penetrates through the side wall of the ink box and extends to the outside; the lifting buckle is fixed at one end of the stirring rod extending out of the ink box; the end of the stirring rod in the ink box is also provided with a blade.

By adopting the technical scheme, when the ink in the ink box is uneven due to the phenomena of precipitation, layering and the like, the lifting buckle is grasped to push and pull the stirring rod, so that the blades on the stirring rod stir the ink in the ink box, and the ink is stirred uniformly.

The utility model discloses further set up to: the stirring device also comprises a buckle cover, a baffle plate and a compression spring; one end of the buckle cover is an open end and the other end is a closed end; the buckle cover is sleeved on the stirring rod by a closed end and is fixed at the outer side of the ink box by an open end; the baffle is positioned in the buckle cover and is fixed on the stirring rod; the pressing spring is positioned in the buckle cover and has a tendency of pushing the baffle plate towards the direction approaching the ink box.

By adopting the technical scheme, when the ink box is used, the stirring rod is pulled outwards, and the baffle presses the compression spring to deform the compression spring; the lifting buckle is loosened, and the pressing spring generates thrust on the baffle and the stirring rod for restoring deformation so that the baffle and the stirring rod are restored to the original positions; in the process, the blades on the stirring rod push the ink in the ink box to stir the ink uniformly; compared with the push-and-pull of hands, the utility model saves more labor.

To sum up, the utility model discloses following beneficial effect has:

1. when the printing stock passes through the static removing device, the printing stock slides by adhering to the support rod and then passes through the hairbrush; the pushing spring is in a compressed state, the brush is pushed to the printing stock, and the brush can be continuously supplied when worn, so that the brush can continuously brush the surface of the printing stock and remove static electricity on the surface of the printing stock; the printing stock with the static removed enters a printing device to finish printing;

2. when the bristles are worn for a long time and cannot touch the surface of a printed object, the adjusting nut enables the threaded rod to push the brush towards the direction of the printed object until the bristles are extruded on the printed object again under the action of the pushing spring, so that the brush does not need to be frequently replaced, and the service life of the brush is prolonged;

3. the stirring device is arranged, so that the ink can be stirred when the ink has the phenomena of precipitation, layering and the like, and the printing effect is ensured.

Drawings

FIG. 1 is a schematic view of a flexographic printing press;

FIG. 2 is a schematic view of the configuration of the ink scraper, ink cartridge and anilox roller in cooperation with each other;

FIG. 3 is a cross-sectional view of the stirring rod;

FIG. 4 is a schematic view of another perspective of a flexographic printing press;

fig. 5 is a schematic structural view of the static eliminating apparatus.

In the figure, 1, a frame; 10. a plate frame; 11. a vertical plate; 12. a transverse plate; 2. an unwinding roller; 20. fixing the rod; 21. a rotating drum; 3. a printing device; 30. an anilox roll; 31. printing plate rollers; 310. printing plate; 32. a platen roller; 4. an ink cartridge; 40. a stirring device; 400. a stirring rod; 4000. a blade; 401. buckling a cover; 402. lifting and buckling; 403. a baffle plate; 404. a compression spring; 5. a squeegee; 50. a cross beam; 51. a tool holder; 52. a doctor blade; 53. a bolt; 54. a jacking spring; 6. a dryer; 61. a strut; 7. a wind-up roll; 8. a static electricity removing device; 81. a brush holder; 811. a frame bar; 812. a slide rail; 82. a brush; 820. a back plate; 821. brushing; 83. pushing the spring; 84. a threaded rod; 85. a nut; 86. a support rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Examples

Referring to fig. 1, a flexographic printing machine includes a frame 1, an unwinding roller 2, a printing device 3, an ink cartridge 4, a squeegee 5, a dryer 6, and a winding roller 7; the frame 1 comprises a plate frame 10, a vertical plate 11 and a transverse plate 12, wherein the plate frame 10 and the vertical plate 11 are vertically arranged and parallel to each other, the transverse plate 12 is horizontally arranged, and two sides of the transverse plate are fixedly connected with the plate frame 10 and the vertical plate 11 respectively; the unwinding roller 2 is arranged on the plate frame 10 and comprises a fixed rod 20 and a rotary drum 21, the fixed rod 20 and the transverse plate 12 are positioned on the same surface of the plate frame 10 and are perpendicular to the plate frame 10, one end of the fixed rod is fixedly connected with the plate frame 10, the rotary drum 21 is sleeved on the fixed rod 20, the rotary drum 21 can rotate on the fixed rod 20, and friction force exists between the rotary drum and the fixed rod 20; the printing device 3 comprises an anilox roller 30, a printing plate roller 31 and a stamping roller 32, the three are parallel, two ends of a roller shaft are respectively connected to a plate frame 10 and a vertical plate 11, a motor capable of respectively driving the printing plate roller 31 and the stamping roller 32 to rotate is arranged on the plate frame 10, a printing plate 310 is arranged on the printing plate roller 31, the anilox roller 30 is in contact with the surfaces of the printing plate roller 31 and the stamping roller 32, and the anilox roller 30 can be driven to rotate when the printing plate roller 31 rotates; the ink cartridge 4 is fixedly attached to the upper surface of the cross plate 12 with its opening facing upward, and the lower portion of the anilox roller 30 is immersed in the ink cartridge 4.

Referring to fig. 1 and 2, the ink scraper 5 includes a cross beam 50, a knife rest 51, a doctor blade 52, a bolt 53 and a top feeding spring 54, the cross beam 50 is perpendicular to the plate frame 10, two ends of the cross beam are fixedly connected to the ink box 4, the knife rest 51 is parallel to the cross beam 50, a sliding groove is formed in the ink box 4, two ends of the knife rest 51 extend into the sliding groove and can slide, the doctor blade 52 is fixed on the knife rest 51, a blade is abutted against the surface of the anilox roller 30, threaded holes are formed in the cross beam 50 at intervals along the length direction of the cross beam 50, the bolt 53 is matched with the threaded holes, the small end of the bolt 53 is abutted against the knife rest 51, friction lines are formed in the large end of the bolt 53 at intervals along the circumferential surface, the top feeding spring 54 is sleeved on the bolt 53 and; the dryer 6 is fixedly connected to the top of the plate frame 10, the air outlet is downward, two support rods 61 are respectively arranged below two ends of the dryer 6, one ends of the support rods 61 are fixedly connected to the plate frame 10, and the support rods 61 can support printed materials to enable the printed materials to pass through the air outlet of the dryer 6; the winding roller 7 is vertically connected to the plate frame 10, and the plate frame 10 is connected with a motor capable of driving the winding roller 7 to rotate.

When the device is used, ink is added into the ink box 4 to enable the ink to submerge the lower part of the anilox roller 30, the printing plate roller 31, the stamping roller 32 and the winding roller 7 rotate under the driving of the motor, a coiled strip printing stock is sleeved on the unwinding roller 2 and fixed, the strip printing stock is printed through the printing device 3, then the strip printing stock is lapped on the two support rods 61 and is dried through the dryer 6, finally the winding is finished at the winding roller 7, and the winding roller 7 rotates under the driving of the motor, so that the printing stock is driven to be sequentially unwound, printed and dried; when a printing stock passes through the printing device 3, printing is carried out between the printing plate 310 and the stamping roller 32, the anilox roller 30 is driven to rotate by the printing plate roller 31, ink is dipped in the ink box 4 when the anilox roller 30 rotates, redundant ink is scraped by the ink scraping knife 52 abutted to the surface of the ink box, then the ink is transferred to the printing plate 310 by the anilox roller 30, and the printing plate roller 31 and the stamping roller 32 jointly act to press the ink onto the printing stock.

When the cutting edge of the doctor blade 52 is worn, the bolt 53 is screwed to make the small end of the bolt 53 abutting against the cutter frame 51 push the cutter frame 51 and the doctor blade 52 to move towards the anilox roller 30, and because the bolt 53 is provided with a row, when the cutting edge of the doctor blade 52 is worn, the pressure between the cutting edge at different positions and the anilox roller 30 can be accurately adjusted by screwing the bolts 53 at different positions, so that the anilox roller 30 is uniformly inked, and the worn doctor blade 52 can still be continuously used; in addition, when screwing bolt 53, top send spring 54 to bolt 53 elasticity, as the distance that bolt 53 pushed knife rest 51 and made it slide is bigger, top send spring 54 to bolt 53 power is bigger, and is harder when screwing the bolt cap, makes the people can control better according to the hard condition and screws the degree, and the friction line on the big end of bolt 53 makes the people can adjust bolt 53 more accurately.

When the scheme is used, the ink in the ink box is not used at one time, and if the ink box is placed for a period of time, the ink can have the phenomena of precipitation, layering and the like, so that the printing effect is influenced when the ink box is continuously used next time.

Therefore, referring to fig. 2 and 3, the stirring device 40 is provided on the ink cartridge 4, and the stirring device 40 includes a stirring rod 400, a buckle cover 401, a buckle 402, a baffle 403, and a pressing spring 404; one side of the ink box 4 close to the vertical plate 11 is provided with a small hole, the corresponding position of the vertical plate 11 is also provided with a small hole, one end of the stirring rod 400 penetrates through the two small holes and extends out of the vertical plate 11, the other end of the stirring rod 400 is positioned in the ink box 4, and the part of the stirring rod 400 positioned in the ink box 4 is provided with a blade 4000; the buckle cover 401 is arranged on the small hole of the vertical plate 11, one end of the buckle cover is fixedly connected with the vertical plate 11, the other end of the buckle cover is closed and provided with the small hole, and one end, extending out of the vertical plate 11, of the stirring rod 400 penetrates through the small hole in the closed end of the buckle cover 401 and extends out; the lifting buckle 402 is fixedly connected to one end of the stirring rod 400 extending out of the small hole at the closed end of the buckle cover 401; the baffle 403 is positioned inside the buckle cover 401 and is fixedly connected with the stirring rod 400; the pressing spring 404 is arranged between the baffle 403 and the closed end of the buckle cover 401 along the direction of the stirring rod 400, and the pressing spring 404 is in a compressed state to enable the baffle 403 to be tightly attached to the vertical plate 11.

When the scheme is used, when ink in the ink box is uneven due to precipitation or layering, the stirring rod 400 is pulled towards the outside of the ink box 4, the baffle 403 presses the pressing spring 404 to deform, the lifting buckle 402 is loosened, the pressing spring 404 pushes the baffle 403 and the stirring rod 400 to restore to the original positions in order to restore deformation, and in the process, the blades 4000 on the stirring rod 400 push the ink in the ink box 4 to stir the ink evenly, so that the printing effect is prevented from being influenced due to uneven ink.

In the printing process, static electricity on a printing stock is transferred into ink through a printing plate, so that the ink is charged with static electricity, the ink is charged with static electricity when being transferred to the surface of a printing object, and meanwhile, the ink and the printing stock are also charged with static electricity, the static electricity or neutralization discharge or like charges repel, so that normal printing cannot be realized, ink spots or ink whiskers occur, and the printing quality is influenced.

Therefore, referring to fig. 4 and 5, a static electricity eliminating device 8 is provided, the static electricity eliminating device 8 comprises a brush holder 81, a brush 82, a pushing spring 83, a threaded rod 84, a nut 85 and a support rod 86; the brush holder 81 comprises a frame rod 811 and two sliding rails 812, wherein one end of the frame rod 811 is fixedly connected to the plate frame 10, the two sliding rails 812 are respectively arranged at two ends of the frame rod 811, the sliding rails 812 are perpendicular to the frame rod 811, one end of the sliding rails 812 is fixedly connected with the frame rod 811, and sliding grooves are formed in the sliding rails 812; the brush 82 comprises a back plate 820 and bristles 821, two ends of the back plate 820 are respectively inserted into the sliding grooves of the two sliding rails 812 and can slide, the back plate 820 faces the rack bar 811, and the bristles 821 faces away from the rack bar 811; propelling movement spring 83 sets up between backplate 820 and hack lever 811, its both ends respectively with both fixed connection, the aperture has been seted up on hack lever 811, threaded rod 84 can pass this aperture slip and both ends are stretched out, wherein one end fixed connection is on backplate 820, nut 85 assembles the other end at threaded rod 84, propelling movement spring 83 is in compression state, push brush 82 to the direction that deviates from the hack lever 811, brush 82 drives threaded rod 84 and makes nut 85 hug closely hack lever 811, bracing piece 86 is equipped with to the below of brush hair 821, bracing piece 86 one end fixed connection is on grillage 11, the stock can paste bracing piece 86 before printing device 3 and slide and contact with brush hair 821.

In use, after the substrate is unwound and before passing through the printing device 3, the substrate passes through the static eliminating device 8; when the printing stock passes through the static removing device 8, the printing stock slides by clinging to the support rod 86, then passes through the brush 82, the pushing spring 83 is in a compressed state, the brush 82 is pushed to the printing stock, the brush bristles 821 can continuously brush the surface of the printing stock and remove static electricity on the surface of the printing stock, the printing stock with the static electricity removed enters the printing device 6 to complete printing, is dried by the dryer 2 and is finally wound on the winding roller 7; in addition, when the brush 821 is worn for a long time and cannot touch the surface of the printing material, the adjusting nut 84 enables the threaded rod 84 and the pushing spring 83 to push the brush 82 towards the direction of the printing material until the brush 821 can contact the surface of the printing material.

The embodiment of this embodiment is the utility model discloses preferred embodiment is not according to this restriction the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A flexographic printing machine comprises a frame (1), an unwinding roller (2), a printing device (3), an ink box (4), an ink scraper (5), a dryer (6), a winding roller (7) and a static removing device (8); the uncoiling roller (2), the ink box (4), the dryer (6) and the coiling roller (7) are arranged on the rack (1); the printing device (3) comprises an anilox roller (30), a printing plate roller (31) and a stamping roller (32), wherein the peripheral surface of the anilox roller (30) is in contact with the peripheral surface of the printing plate roller (31), and the printing plate roller (31) can drive the anilox roller (30) to rotate when rotating; the lower part of the anilox roller (30) is immersed in the ink box (4); the ink scraper (5) comprises a scraping blade (52), the scraping blade (52) is abutted with the surface of the anilox roller (30), and the ink scraper is characterized in that: the static electricity removing device (8) comprises a brush frame (81), a brush (82), a pushing spring (83), a threaded rod (84), a nut (85) and a support rod (86); the brush holder (81) and the support rod (86) are fixed on the frame (1); the brush (82) comprises a back plate (820) and bristles (821) fixed on the back plate (820); the backboard (820) is connected to the brush holder (81) in a sliding way and can slide towards or away from the support rod (86); the axis of the threaded rod (84) is parallel to the sliding direction of the brush (82), one end of the threaded rod is fixed with the back plate (820), and the other end of the threaded rod penetrates through the brush holder (81); the nut (85) is connected to one end of the screw penetrating the brush frame (81); the pushing spring (83) is arranged between the back plate (820) and the brush holder (81) and is in a compressed state; the holes of the brush holder (81) corresponding to the threaded rod (84) allow the threaded rod (84) to slide along the axis.

2. The flexographic printing press according to claim 1, wherein: the brush holder (81) comprises a holder rod (811) and a slide rail (812); one end of the frame rod (811) is fixedly connected to the frame (1), and the two sliding rails (812) are respectively arranged at two ends of the frame rod (811); the sliding rail (812) is vertical to the frame rod (811), and one end of the sliding rail is fixedly connected with the frame rod (811); the sliding rails (812) are provided with sliding grooves, and two ends of the backboard (820) are respectively inserted into the sliding grooves of the two sliding rails (812) and can slide.

3. The flexographic printing press according to claim 2, wherein: the pushing spring (83) is sleeved on the threaded rod (84).

4. The flexographic printing press according to claim 1 or 2, characterized in that: the ink cartridge (4) is provided with a stirring device (40) for stirring ink.

5. The flexographic printing press according to claim 4, wherein: the stirring device (40) comprises a stirring rod (400) and a lifting buckle (402); one end of the stirring rod (400) is positioned in the ink box (4) and the other end penetrates through the side wall of the ink box (4) to extend to the outside; the lifting buckle (402) is fixed on one end of the stirring rod (400) extending out of the ink box (4); the end of the stirring rod (400) positioned in the ink box (4) is also provided with a blade (4000).

6. The flexographic printing press according to claim 5, wherein: the stirring device (40) also comprises a buckle cover (401), a baffle plate (403) and a compression spring (404); one end of the buckle cover (401) is an open end and the other end is a closed end; the buckle cover (401) is sleeved on the stirring rod (400) with a closed end and is fixed at the outer side of the ink box (4) with an open end; the baffle (403) is positioned in the buckle cover (401) and is fixed on the stirring rod (400); the hold-down spring (404) is located in the buckle cover (401) and has a tendency to push the baffle (403) towards the ink box (4).