CN117885435A

CN117885435A - Eight-color intaglio printing press

Info

Publication number: CN117885435A
Application number: CN202410244755.XA
Authority: CN
Inventors: 刘�东
Original assignee: Nanjing Sunchi Color Printing Co ltd
Current assignee: Nanjing Sunchi Color Printing Co ltd
Priority date: 2024-03-05
Filing date: 2024-03-05
Publication date: 2024-04-16

Abstract

The application relates to an eight-color intaglio printing machine, which relates to the technical field of color printing, and comprises: the paper feeding device comprises a box body, a paper feeding unit, a printing unit, a drying unit and a paper collecting unit, wherein the paper feeding unit, the printing unit, the drying unit and the paper collecting unit are arranged in the box body; one end of the piece to be printed is connected with the paper feeding unit, and respectively passes through the printing unit and the drying unit, and the other end of the piece to be printed is connected with the paper collecting unit; the printing unit comprises a printing mechanism, a scraper mechanism, a cleaning mechanism, an ink box and a drying box; the printing mechanism is arranged on the inner side wall of the box body and used for printing a to-be-printed piece; the two ends of the scraper mechanism are arranged on the side wall of the box body and are abutted against the printing roller of the printing mechanism; a plurality of printing grooves are formed in the printing roller; the cleaning mechanism is arranged at one side of the printing mechanism; the ink box is connected with the printing mechanism; the drying cabinet sets up on the inside wall of box, and adjacent printing mechanism sets up. The application can fully stir the ink by utilizing the ink homogenizing component in the ink box, thereby ensuring the quality of the ink and improving the printing effect.

Description

Eight-color intaglio printing press

Technical Field

The application relates to the technical field of color printing, in particular to an eight-color intaglio printing machine.

Background

Intaglio printing presses are efficient, multicolor printing devices specifically designed for high quality pattern and text printing on a variety of materials. A common printing technique used in intaglio printing is characterized by storing ink in the pattern or text portions of the intaglio plate and then transferring the ink by pressure to the printing material, typically paper, plastic or metal. Such printers are widely used in the field of color printing of packaging materials, textiles, paper, and the like.

Early intaglio printing presses were either mono-or bi-colored, relying mainly on manual operation, were inefficient, and print quality was greatly affected by operator skill. Subsequently, in order to improve production efficiency and printing quality, four-color and more-color intaglio printing machines have been developed, and automated control has been introduced, so that the processes of toning, inking, embossing, etc. are more precise and stable. In recent years, with the rapid development of electronic technology and computer control technology, the eight-color intaglio printing press has achieved a higher level of automation and intellectualization.

However, when the existing eight-color intaglio printing machine is used for printing, a certain amount of ink needs to be stored in advance, and the ink stored in the ink box can generate layering or precipitation phenomenon due to long-time placement, so that the quality of the ink printed on paper is reduced, the printing effect is reduced, resources are wasted, and the cost is increased. In addition, there is also a problem of ink sticking to the printing roller of the printer after long-term use, which affects the printing effect, and there is no device for cleaning the grooves of the printing roller.

Disclosure of Invention

The application provides an eight-color intaglio printing machine in order to solve the problem that printing effect is poor due to ink layering or precipitation of the eight-color intaglio printing machine.

The eight-color intaglio printing machine provided by the application adopts the following technical scheme:

An eight-color intaglio printing press comprising: the paper feeding device comprises a box body, a paper feeding unit, a printing unit, a drying unit and a paper collecting unit, wherein the paper feeding unit, the printing unit, the drying unit and the paper collecting unit are arranged in the box body; one end of the piece to be printed is connected with the paper feeding unit, and respectively penetrates through the printing unit and the drying unit, and the other end of the piece to be printed is connected with the paper collecting unit; the printing unit comprises a printing mechanism, a scraper mechanism, a cleaning mechanism, an ink box and a drying box; the printing mechanism is arranged on the inner side wall of the box body and is used for printing a piece to be printed; the two ends of the scraper mechanism are arranged on the side wall of the box body and are abutted against the printing roller of the printing mechanism; a plurality of printing grooves are formed in the printing roller; the cleaning mechanism is arranged on one side of the printing mechanism; the ink box is connected with the printing mechanism; the drying box is arranged on the inner side wall of the box body and is adjacent to the printing mechanism; the ink box is internally provided with an ink homogenizing component, the ink box is provided with a power component, the ink homogenizing component comprises a first ink homogenizing piece and a second ink homogenizing piece, the power component is connected with the first ink homogenizing piece and the second ink homogenizing piece and drives the first ink homogenizing piece and the second ink homogenizing piece to rotate, and the rotation directions of the first ink homogenizing piece and the second ink homogenizing piece are opposite; the first ink homogenizing piece is arranged on the outer side of the second ink homogenizing piece.

Through adopting above-mentioned technical scheme, utilize printing mechanism to print the piece of treating, utilize scraper mechanism to scrape the printing ink on printing mechanism's the printing roller surface to can guarantee that the printing ink in the printing groove is stained with on the paper, improve the reliability of printing. The printing mechanism has the advantages that the cleaning mechanism can be used for cleaning the printing groove on the printing mechanism after a long time, the influence of the bonding and solidification ink in the printing groove on the printing effect is avoided, the printing quality is improved, and in addition, the service life of the machine is prolonged. The ink box is utilized to provide ink for a printing mechanism in real time, the ink uniformly stored in the ink box is utilized to continuously stir the ink stored in the ink box, the occurrence of layering or sedimentation phenomenon of the ink caused by long-time placement is avoided, the printing quality is improved, the resources are saved, and the cost is reduced. The drying oven can be used for drying the printing mechanism after the printing mechanism is cleaned by the cleaning mechanism, so that the humidity in the air is reduced, the influence on the dryness of paper caused by too high humidity is avoided, and the printing quality and effect are improved.

In a specific embodiment, the printing mechanism further comprises a pressure roller and an ink cartridge, the printing roller being rotatably disposed within the housing; the pressure roller is positioned at one side of the printing roller and can be propped against or separated from the printing roller, and the substitute printing piece is positioned between the pressure roller and the printing roller; the ink box is arranged below the printing roller and is connected with the ink box.

Through adopting above-mentioned technical scheme, utilize the pressure roller to press the paper to attach on the printing roller, guarantee that the printing ink in the printing groove can reliably, stable be stained with attach on the paper, improved the reliability of printing.

In a specific embodiment, the power assembly comprises an ink homogenizing driver, a driving wheel, a driven wheel, a connecting belt, a connecting rod and a rotary rack; the driving wheel is connected with the ink homogenizing driver, and the driven wheels are arranged on one side of the driving wheel and are sleeved in the connecting belt; one end of the connecting rod is coaxially connected with the driven wheel, and the other end of the connecting rod is rotationally connected with the end part of the rotary rack; the rotary rack is connected with the first ink homogenizing piece.

Through adopting above-mentioned technical scheme, utilize even black driver drive action wheel to rotate to drive connecting belt and follow the driving wheel and rotate, and then drive the connecting rod and rotate, thereby drive rotatory rack and remove on first even black piece, for the first even black piece rotation of power component drive provides the guarantee, improved even black effect, further improved the printing effect.

In a specific embodiment, the first ink-leveler includes a first rotator, a first agitator bar, and a first agitator plate; the top of the first rotator is provided with a first driving tooth, the bottom of the first rotator is provided with a first conical tooth, a limiting sleeve is sleeved on the outer side of the first driving tooth, and the rotary rack penetrates through the limiting sleeve and is meshed with the first driving tooth; the first conical teeth are connected with the second ink homogenizing piece; one end of the first stirring rod is connected to the first rotator, and the other end of the first stirring rod is connected with the first stirring plate.

Through adopting above-mentioned technical scheme, utilize first circulator and rotatory rack engagement, guaranteed that power component can be stable drive first even black piece of drive and rotate, and then drive first stirring board upset, stirring printing ink in the printing ink case, improved even black effect.

In a specific embodiment, the second ink-leveler includes a second rotator, a second agitator bar, a second agitator plate, and an intermediate rotator; the first rotator and the second rotator are sleeved on the same shaft, the middle rotator penetrates through the shaft, and third conical teeth are arranged at two ends of the middle rotator; the top of the second rotator is provided with second conical teeth; one end of each third conical tooth is meshed with the first conical tooth, and the other end of each third conical tooth is meshed with the second conical tooth; one end of the second stirring rod is connected to the second rotator, and the other end of the second stirring rod is connected with the second stirring plate.

Through adopting above-mentioned technical scheme, utilize the third conical tooth and the first conical tooth meshing of intermediate rotator, and with the meshing of second conical tooth, can guarantee that first even black piece pivoted drives second even black piece rather than reverse rotation, guarantee that first puddler and second puddler stir printing ink in the different orientation of the internal different positions of printing ink case, further improved the degree of consistency of mixed printing ink, improved the printing effect.

In a specific embodiment, the doctor mechanism includes a doctor driver, fixed teeth, moving bevel teeth, threaded rod, moving barrel, and doctor plate; the fixed teeth are arranged adjacent to the printing mechanism, a circle of teeth are arranged on one side surface of the fixed teeth along the circumferential direction, and the movable bevel teeth are meshed with the teeth on the fixed teeth; a threaded rod is sleeved in the movable bevel gear, one end of the threaded rod is connected with the scraper driver, and the other end of the threaded rod is in threaded connection with the movable cylinder; the moving cylinder is connected with the scraper plate.

Through adopting above-mentioned technical scheme, when utilizing this setting can drive the scraper plate and remove in order to adjust the position of scraper plate, can also adjust the angle of scraper plate, can adjust the position of scraper plate when long-time use back scraper plate and printing roller do not paste for the surface laminating of scraper plate and printing roller has avoided appearing the condition of scraper trace or printing ink scratch on the printing roller, has improved the printing quality.

In a specific embodiment, the cleaning mechanism comprises a cleaning cylinder, a cleaner and a moving driver, wherein the cleaner is arranged on the cleaning cylinder and corresponds to the position of the printing groove on the printing roller, and the cleaning cylinder and the scraper mechanism are positioned on the opposite side of the printing roller and are internally provided with cleaning agents; the movable driver is arranged on the side wall of the box body and connected with two ends of the cleaning cylinder, and can drive the cleaning cylinder to move and rotate.

Through adopting above-mentioned technical scheme, utilize the wash bowl can provide the cleaner for the cleaner to through the position that the cleaner set up on the wash bowl and the position correspondence unanimous setting of printing groove on the printing roller, the printing ink dirt in the printing groove of washing that can be accurate avoids the dirt in the printing groove to be difficult to by the washing leading to remaining condition, has improved abluent reliability and efficiency, has improved abluent effect.

In a specific embodiment, the washer comprises a heat generating barrier, a nozzle, a brush, and a booster pump; the spray pipe is arranged on the cleaning cylinder and is communicated with the interior of the cleaning cylinder; the pressure pump is arranged on the cleaning cylinder and is connected with the spray pipe; the heating interlayer is axially arranged in the pipe wall of the spray pipe; the hairbrushes are uniformly arranged on the spray pipe along the circumferential direction.

Through adopting above-mentioned technical scheme, utilize the interlayer axial that generates heat to set up in the pipe wall of spray tube, can heat the spray tube to can heat the cleaner that flows through in the spray tube, improve the ability of cleaner cleaning spot, further improved abluent effect. The brush can be used for wiping stains in the printing groove, so that the cleaning effect is further improved. The pressure of jet pipe injection can be increased by utilizing the booster pump, so that the pressure of cleaning agent injection in the printing tank is increased, and the cleaning effect is further improved.

In a specific embodiment, the drying oven comprises a heating assembly and a venting assembly, wherein the venting assembly is connected with the heating assembly; the heating assembly comprises a plurality of heating pipes and a fan, and the fan is arranged between the heating pipes and the printing roller; the exhaust assembly is provided with an exhaust box and an air suction pump; the exhaust box is arranged at the bottom of the drying box and is communicated with the drying box; a filter screen and an air outlet channel are arranged on one side wall of the air exhaust box, which is close to the box body; the air suction pump is arranged in the air exhaust box, one end of the air suction pump is connected with the drying box through a pipeline, and the pipeline connected with the other end of the air suction pump is arranged adjacent to the air outlet channel.

Through adopting above-mentioned technical scheme, utilize heating element to dry the printing roller after wasing, avoid having the condition of water stain on printing roller and the printing groove after wasing, guaranteed the quality of printing, also reduced the humidity in the air simultaneously, avoid paper to wet, provide the guarantee for the printing of paper. Utilize exhaust subassembly, can filter the discharge to the hot-blast that heating element produced, guarantee the interior temperature constancy of heating element, avoid the high temperature to cause the influence to the apparatus, improve the life of machine.

In a specific embodiment, the printing unit further comprises a recovery mechanism comprising a recovery tank, a first recovery channel, a second recovery channel, and an overflow channel; the recovery box is arranged below the ink box and is fixed on the inner side wall of the box body; the first recovery channel and the overflow channel are arranged between the ink box and the recovery box; the second recycling channel is arranged between the recycling box and the ink box, and a pressure pump is arranged on the second recycling channel.

Through adopting above-mentioned technical scheme, utilize recovery mechanism can retrieve unnecessary printing ink in the ink horn through first recovery passageway and second recovery passageway, provide convenient for wasing the ink horn, also can be with printing ink transmission back in the ink box, avoid printing ink to place for a long time in the ink horn and lead to the condition of precipitation, layering, guaranteed the quality of printing ink. The overflow channel can avoid the excessive overflow of the ink in the ink box. The sewage after cleaning can be discharged through the recovery tank by utilizing the drainage channel.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The ink homogenizing component can be used for overturning and stirring in different directions at different positions in the ink box, so that the ink homogenizing effect is improved, layering or sedimentation phenomenon caused by long-time storage of the ink is avoided, the quality of the ink is ensured, the printing effect is improved, and the waste of resources is avoided;

2. the printing roller for long-time printing and the printing groove on the printing roller can be cleaned by the cleaning mechanism, so that the influence of the adhesive and solidified ink in the printing groove on the next printing is avoided, the printing quality is improved, and the service life of the machine is prolonged;

3. the angle of the scraper plate can be adjusted when the position of the scraper plate is adjusted by utilizing the scraper mechanism, so that redundant ink traces on a piece to be printed caused by a gap between the scraper plate and the printing roller are avoided, and the printing quality is improved.

Drawings

FIG. 1 is an overall schematic of an embodiment of the present application.

FIG. 2 is a schematic illustration of the internal portions of an embodiment of the present application.

Fig. 3 is a partial cross-sectional view of an embodiment of the present application.

Fig. 4 is a schematic view of a doctor mechanism and a portion of a doctor plate in one embodiment of the application.

Fig. 5 is an internal schematic view of an ink tank in one embodiment of the application.

Fig. 6 is a partial enlarged view of a in fig. 3 according to an embodiment of the present application.

Fig. 7 is a cross-sectional view of a drying box in one embodiment of the application.

Reference numerals illustrate: 1. a case; 2. a printing unit; 3. a printing mechanism; 31. a printing roller; 32. a printing tank; 33. a pressure roller; 34. an ink cartridge; 4. a scraper mechanism; 41. a doctor blade driver; 42. a fixed tooth; 43. moving the bevel gear; 44. a threaded rod; 45. a moving cylinder; 46. a doctor plate; 5. a cleaning mechanism; 51. a cleaning cylinder; 52. a movement driver; 53. a washer; 531. a spray pipe; 532. a brush; 533. a pressurizing pump; 534. a heat generating interlayer; 6. an ink tank; 61. a power assembly; 611. a driving wheel; 612. driven wheel; 613. a connecting belt; 614. a connecting rod; 615. rotating the rack; 62. a first ink distributing member; 621. a first rotator; 622. a first drive tooth; 623. a first conical tooth; 624. a first stirring rod; 625. a first stirring plate; 626. a limit sleeve; 63. a second ink distributing member; 631. a second rotator; 632. a second conical tooth; 633. an intermediate rotator; 634. a third conical tooth; 635. a second stirring rod; 636. a second stirring plate; 7. a drying box; 71. a heating assembly; 711. heating pipes; 712. a fan; 72. an exhaust assembly; 721. a blow-out box; 722. an induced draft pump; 723. a filter screen; 724. an air outlet channel; 8. a recovery mechanism; 81. a recovery box; 82. a first recovery channel; 83. a second recovery channel; 84. and an overflow channel.

Detailed Description

The application is described in further detail below with reference to fig. 1-7. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed" and "connected" should be interpreted broadly, and for example, they may be fixedly connected, detachably connected, or integrally connected; either directly or indirectly via an intermediate medium, or in communication with each other or in interaction with each other. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In this specification, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated, such that features defining "first," "second," "third," or the like may explicitly or implicitly include one or more of such features.

An embodiment of the eight-color intaglio printing press according to the present application, as shown in fig. 1 and 2, comprises: the box 1, a paper feeding unit, a printing unit 2, a drying unit and a paper collecting unit which are arranged in the box 1. The piece to be printed is paper, one end of the paper is connected to the paper feeding unit, and the other end of the paper respectively passes through the printing unit 2 and the drying unit and is connected to the paper feeding unit.

As shown in fig. 1,2, 3, the printing unit 2 includes a printing mechanism 3, a doctor mechanism 4, a cleaning mechanism 5, an ink tank 6, a drying oven 7, and a recovery mechanism 8. The printing mechanism 3 includes a printing roller 31, a pressure roller 33, and an ink cartridge 34. Both ends of the printing roller 31 are rotatably disposed on the inner side wall of the case 1, and one end extends and is connected with a motor mounted on the case 1. The surface of the printing roller 31 is uniformly provided with a plurality of printing grooves 32 in the circumferential direction. The pressure roller 33 is disposed above the printing roller 31, both ends of the pressure roller 33 are rotatably connected to the case 1, and an air cylinder is connected to the outside of the case 1, and drives the pressure roller 33 to move vertically so as to be capable of abutting against or separating from the printing roller 31. The sheet to be printed is disposed between the printing roller 31 and the pressure roller 33. The ink cartridges 34 are connected to the case 1 at both ends thereof, are located below the printing roller 31, and are connected to the ink tank 6 by pipes.

The cylinder drives the pressure roller 33 and drives the paper to be printed to move so as to press the paper to be printed on the printing roller 31, the motor drives the printing roller 31 to rotate, the part of the printing roller 31 immersed in the ink box 34 is smeared with ink, and after the printing roller 31 rotates, the ink on the surface is scraped off after passing through the scraper mechanism 4; and then the printing groove 32 with the ink rotates until the printing groove 32 with the ink contacts with the paper, the ink in the printing groove 32 is adhered to the paper, and finally the paper is conveyed to the drying unit and then wound on the paper collecting unit.

As shown in fig. 2, 3, 4, the doctor mechanism 4 includes a doctor driver 41, a fixed tooth 42, a moving bevel tooth 43, a threaded rod 44, a moving cylinder 45, and a doctor plate 46. Two fixed teeth 42 are provided on opposite inner side walls in the ink cartridge 34, respectively, and a ring of teeth inclined outward is provided on opposite side faces in the circumferential direction of the outer ring. A scraper driver 41 is arranged at the center of the fixed teeth 42, the scraper driver 41 is a scraper motor, the scraper motor is connected with a movable conical tooth 43, the movable conical tooth 43 is rotatably arranged on the teeth, and the scraper motor is connected with the fixed teeth 42 through a connecting plate; in other words, the movable bevel gear 43 moves circumferentially on the outer ring of the fixed gear 42 with the center position of the fixed gear 42 as the center of the circle by the driving of the doctor motor. A threaded rod 44 is arranged in the movable conical tooth 43 in a penetrating way, one end of the threaded rod 44 is connected with the scraper motor, the other end of the threaded rod 44 is in threaded connection with a movable cylinder 45, and the movable cylinder 45 is arranged on the scraper plate 46. In addition, a doctor blade box is included to wrap the doctor mechanism 4, and the blade end of the doctor blade plate 46 extends beyond the doctor blade box.

The doctor motor is started, and drives the movable bevel gear 43 to do circular motion on the fixed bevel gear 42, meanwhile, the threaded rod 44 penetrating through the movable bevel gear 43 rotates along with the movable bevel gear 43, and the movable cylinder 45 in threaded connection with the threaded rod 44 moves along with the doctor plate 46, so that the position or angle of the doctor plate 46 can be adjusted, and the doctor plate 46 is tightly attached to the surface of the printing roller 31.

As shown in fig. 2,3 and 5, the ink tank 6 is disposed above the ink cartridge 34, the ink tank 6 is provided with an ink inlet, the bottom is provided with an ink outlet pipe, and the output end of the ink outlet pipe extends into the ink cartridge 34. An ink homogenizing component is arranged in the ink box 6, and a power component 61 is arranged on the ink box 6, wherein the ink homogenizing component comprises a first ink homogenizing piece 62 and a second ink homogenizing piece 63. The power assembly 61 is connected with the first ink homogenizing member 62 and the second ink homogenizing member 63, and drives the first ink homogenizing member 62 and the second ink homogenizing member 63 to rotate, and the first ink homogenizing member 62 and the second ink homogenizing member 63 rotate oppositely, and the first ink homogenizing member 62 is arranged on the outer side of the second ink homogenizing member 63, namely the second ink homogenizing member 63 is surrounded by the first ink homogenizing member 62.

As shown in fig. 6, the power assembly 61 includes an ink-homogenizing driver, a driving pulley 611, a driven pulley 612, a connecting belt 613, a connecting rod 614, and a rotary rack 615. The driving wheel 611 is connected with an ink homogenizing driver, the driven wheel 612 is arranged on one side of the driving wheel 611, and the driving wheel 611 and the driven wheel 612 are sleeved in the connecting belt 613. One end of the connecting rod 614 is coaxially connected with the driven wheel 612, and the other end is rotatably connected with the end of the rotary rack 615.

The first ink distributing member 62 includes a first rotator 621, a first stirring rod 624, and a first stirring plate 625. The top of the first rotator 621 is provided with a first driving tooth 622, the bottom is provided with a first conical tooth 623, a stop collar 626 is rotatably sleeved on the outer side of the first driving tooth 622, and a rotary rack 615 is sleeved in the stop collar 626 and meshed with the first driving tooth 622. One end of the first stirring rod 624 is connected to the first rotator 621, the other end is connected to the first stirring plate 625, and the first stirring rod 624 is in an "L" shape. The middle portion of the first agitating plate 625 is concavely provided inward.

The second ink distributing member 63 includes a second rotator 631, a second stirring rod 635, a second stirring plate 636, and an intermediate rotator 633. The first rotator 621 and the second rotator 631 are sleeved on the same shaft, the intermediate rotator 633 passes through the shaft and is arranged perpendicular to the shaft, and both ends of the intermediate rotator 633 are connected with third conical teeth 634. The top of the second rotator 631 is provided with a second conical tooth 632, and two third conical teeth 634 are respectively meshed with the first conical tooth 623 and the second conical tooth 632, so that the effect that the first ink homogenizing member 62 rotates and drives the second ink homogenizing member 63 to reversely rotate is achieved. One end of the second stirring rod 635 is connected to the second rotator 631, and the other end is connected to the second stirring plate 636, and the second stirring rod 635 is in an "L" shape. The middle portion of the second agitating plate 636 is concavely disposed inward.

The ink homogenizing motor is started, the ink homogenizing motor rotates to drive the driving wheel 611 to rotate and drive the connecting belt 613 and the driven wheel 612 to rotate, so that the connecting rod 614 and the rotary rack 615 connected with the connecting rod 614 are driven to rotate, the rotary rack 615 drives the first driving teeth 622 meshed with the rotary rack 615 to rotate and drive the first stirring plate 625 to rotate in the ink box 6. The conical tooth at the bottom of the first ink homogenizing member 62 rotates to drive the third conical tooth 634 to rotate, further drive the second conical tooth 632 to rotate, drive the second ink homogenizing member 63 and the second stirring rod 635 to rotate, and the second stirring plate 636 rotates in the opposite direction to the first stirring plate 625 in the ink tank 6.

As shown in fig. 2,3, and 6, the cleaning mechanism 5 includes a cleaning drum 51, a cleaner 53, and a movement driver 52. The washer 53 is provided on the washer drum 51 and corresponds to the position of the printing tank 32 on the printing roller 31. The scrubber 53 includes a heat generating barrier 534, a spout 531, a brush 532, and a pressurizing pump 533. The nozzle 531 is provided on the cleaning cylinder 51 and communicates with the inside of the cleaning cylinder 51. The pressurizing pump 533 is provided on the cleaning cylinder 51 and is connected to one end of the nozzle 531. The heat generating barrier 534 is disposed axially within the wall of the spout 531. The brushes 532 are uniformly disposed circumferentially on the outside of the spout 531.

The cleaning cylinder 51 is located on the opposite side of the doctor mechanism 4 from the printing roller 31 and contains cleaning agent therein. One end of the cleaning cylinder 51 is connected with an injection pipe. The moving driver 52 is provided on a side wall of the casing 1 and connected to both ends of the cleaning cylinder 51, and can drive the cleaning cylinder 51 to move and approach the printing roller 31. The movement driver 52 is an air cylinder that drives the cleaning cylinder 51 toward or away from the printing roller 31.

The movement driver 52 is activated and the wash bowl 51 is moved adjacent the drive roller until it abuts the drive roller surface, at which point the spout 531 and brush 532 extend into the print tank 32. The pressurizing pump 533 drives the spray pipe 531 to spray the cleaning agent, the heating interlayer 534 heats the spray pipe 531, the spray pipe 531 sprays the cleaning agent to wash the printing groove 32, and the hairbrush 532 cleans and erases the printing groove 32.

As shown in fig. 2, 3, and 7, the drying oven 7 includes a heating assembly 71 and an air exhausting assembly 72. The exhaust assembly 72 is in communication with the heating assembly 71. The heating assembly 71 includes a plurality of heating pipes 711 and a fan 712, and the fan 712 is disposed between the heating pipes 711 and the printing roller 31. An exhaust box 721 and an air suction pump 722. The blow-out box 721 is provided at the bottom of the drying box 7 and communicates with the drying box 7. A filter screen 723 and an air outlet channel 724 are arranged on one side wall of the exhaust fan 712, which is close to the box body 1. The suction pump 722 is disposed in the exhaust box 721, and one end is connected to the drying box 7 through a pipe, and a pipe outlet to which the other end is connected is disposed adjacent to the air outlet passage 724.

The heating pipe 711 and the fan 712 are turned on, and the fan 712 blows hot air to the printing roller 31 and the periphery of the printing roller 31, so that the cleaned printing mechanism 3 can be dried quickly. The air suction pump 722 is turned on to suck the hot air of the drying oven 7 and discharge the hot air from the air outlet channel 724, so that the temperature in the drying oven 7 is ensured to be constant.

As shown in fig. 2 and 3, the recovery mechanism 8 includes a recovery tank 81, a first recovery passage 82, a second recovery passage 83, and an overflow passage 84. The recovery tank 81 is provided below the ink cartridge 34 and is fixed to the inner side wall of the tank 1. The first recovery passage 82, the overflow passage 84 are each provided between the ink cartridge 34 and the recovery tank 81. The second recovery passage 83 is provided between the recovery tank 81 and the ink tank 6, and a pressure pump is provided on the second recovery passage 83. The bottom of the recovery box 81 is provided with a discharge pipeline with a valve. The first recovery channel 82 and the overflow channel 84 are respectively provided with a filter screen 723, and the first recovery channel 82 is also respectively provided with a valve.

When too much ink is in the ink cartridge 34, beyond the top of the overflow channel 84, ink flows into the recovery tank 81 through the overflow channel 84. The printer is not used for a long time, i.e., the valve on the first recovery channel 82 is opened, and the ink in the ink cartridge 34 is discharged into the recovery tank 81. The pressure pump is turned on and the ink in the recovery tank 81 is returned to the ink tank 6 through the second recovery passage 83.

The implementation principle of the eight-color intaglio printing press of this embodiment is as follows: the operator opens the paper feeding unit, the paper to be printed passes through the printing unit 2 to be printed, then passes through the drying unit to be dried, and finally, the paper is rolled up through the paper collecting unit.

When the paper to be printed passes through the printing unit 2, the air cylinder drives the pressure roller 33 to move downwards and abut against the rotating printing roller 31, and the paper to be printed is abutted against the printing roller 31. The ink tank 6 is opened, and ink in the ink tank 6 flows into the ink cartridge 34 through the pipe until the printing roller 31 is partially immersed in the ink. The doctor mechanism 4 is activated and the doctor plate 46 scrapes off ink from the surface of the printing roller 31, and the scraped ink falls back into the ink cartridge 34. The ink in the printing grooves 32 is adhered to the paper as it rotates past the paper. During which the ink is constantly stirred by the ink-homogenizing mechanism in the ink tank 6.

After the printing machine prints for a long time, the paper feeding unit and the paper collecting unit are removed, the moving driver 52 is started, the cleaning cylinder 51 is driven to approach and abut against the driving roller, the cleaning cylinder 51 rotates, and the driving roller, the driving groove and the ink cartridge 34 are cleaned through the hairbrush 532 and the spray 531. After cleaning, the heating pipe 711 and the fan 712 are started, and the printing mechanism 3 is dried.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. An eight-color intaglio printing press, comprising: the paper feeding device comprises a box body (1), and a paper feeding unit, a printing unit (2), a drying unit and a paper collecting unit which are arranged in the box body (1); one end of the piece to be printed is connected with the paper feeding unit and respectively passes through the printing unit (2) and the drying unit, and the other end of the piece to be printed is connected with the paper collecting unit;

The printing unit (2) comprises a printing mechanism (3), a scraper mechanism (4), a cleaning mechanism (5), an ink box (6) and a drying box (7); the printing mechanism (3) is arranged on the inner side wall of the box body (1) and is used for printing a piece to be printed; the two ends of the scraper mechanism (4) are arranged on the side wall of the box body (1) and are abutted against the printing roller (31) of the printing mechanism (3); a plurality of printing grooves (32) are formed in the printing roller (31); the cleaning mechanism (5) is arranged on one side of the printing mechanism (3); the ink box (6) is connected with the printing mechanism (3); the drying box (7) is arranged on the inner side wall of the box body (1) and is adjacent to the printing mechanism (3);

An ink homogenizing component is arranged in the ink box (6), a power component (61) is arranged on the ink box (6), the ink homogenizing component comprises a first ink homogenizing component (62) and a second ink homogenizing component (63), the power component (61) is connected with the first ink homogenizing component (62) and the second ink homogenizing component (63), the first ink homogenizing component (62) and the second ink homogenizing component (63) are driven to rotate, and the rotation directions of the first ink homogenizing component (62) and the second ink homogenizing component (63) are opposite; the first ink distributing member (62) is arranged outside the second ink distributing member (63).

2. The eight-color intaglio printing press according to claim 1, wherein: the printing mechanism (3) further comprises a pressure roller (33) and an ink box (34), and the printing roller (31) is rotatably arranged in the box body (1); the pressure roller (33) is positioned on one side of the printing roller (31) and can be abutted against or separated from the printing roller (31), and a substitute is positioned between the pressure roller (33) and the printing roller (31); the ink cartridge (34) is disposed below the printing roller (31) and is connected to the ink tank (6).

3. The eight-color intaglio printing press according to claim 1, wherein: the power assembly (61) comprises an ink homogenizing driver, a driving wheel (611), a driven wheel (612), a connecting belt (613), a connecting rod (614) and a rotary rack (615); the driving wheel (611) is connected with the ink homogenizing driver, and the driven wheel (612) is arranged on one side of the driving wheel (611) and is sleeved in the connecting belt (613); one end of the connecting rod (614) is coaxially connected with the driven wheel (612), and the other end of the connecting rod is rotationally connected with the end part of the rotary rack (615); the rotary rack (615) is connected with the first ink homogenizing piece (62).

4. An eight-color intaglio printing press according to claim 3, wherein: the first ink homogenizing element (62) comprises a first rotator (621), a first stirring rod (624) and a first stirring plate (625); the top of the first rotator (621) is provided with a first driving tooth (622), the bottom of the first rotator is provided with a first conical tooth (623), a limit sleeve (626) is sleeved on the outer side of the first driving tooth (622), and the rotary rack (615) passes through the limit sleeve (626) and is meshed with the first driving tooth (622); the first conical teeth (623) are connected with the second ink homogenizing element (63); one end of the first stirring rod (624) is connected to the first rotator (621), and the other end is connected to the first stirring plate (625).

5. The eight-color intaglio printing press according to claim 4, wherein: the second ink homogenizing element (63) comprises a second rotator (631), a second stirring rod (635), a second stirring plate (636) and an intermediate rotator (633); the first rotator (621) and the second rotator (631) are sleeved on the same shaft, the middle rotator (633) penetrates through the shaft, and both ends of the middle rotator are provided with third conical teeth (634); the top of the second rotator (631) is provided with a second conical tooth (632); one end of each of the two third conical teeth (634) is meshed with the first conical teeth (623), and the other end is meshed with the second conical teeth (632); one end of the second stirring rod (635) is connected to the second rotator (631), and the other end is connected to the second stirring plate (636).

6. The eight-color intaglio printing press according to claim 1, wherein: the scraper mechanism (4) comprises a scraper driver (41), fixed teeth (42), movable conical teeth (43), a threaded rod (44), a movable barrel (45) and a scraper plate (46); the fixed teeth (42) are arranged adjacent to the printing mechanism (3), a circle of teeth are arranged on one side surface of the fixed teeth (42) along the circumferential direction, and the movable bevel teeth (43) are meshed with the teeth on the fixed teeth (42); a threaded rod (44) is sleeved in the movable conical tooth (43), one end of the threaded rod (44) is connected with the scraper driver (41), and the other end of the threaded rod is in threaded connection with the movable cylinder (45); the moving cylinder (45) is connected to the scraper plate (46).

7. The eight-color intaglio printing press according to claim 1, wherein: the cleaning mechanism (5) comprises a cleaning cylinder (51), a cleaner (53) and a moving driver (52), wherein the cleaner (53) is arranged on the cleaning cylinder (51) and corresponds to the position of the printing groove (32) on the printing roller (31), the cleaning cylinder (51) and the scraper mechanism (4) are positioned on one side opposite to the printing roller (31), and cleaning agents are arranged in the cleaning cylinder; the movable driver (52) is arranged on the side wall of the box body (1) and connected with two ends of the cleaning cylinder (51) and can drive the cleaning cylinder (51) to move and rotate.

8. The eight-color intaglio printing press according to claim 7, wherein: the cleaner (53) comprises a heating interlayer (534), a spray pipe (531), a hairbrush (532) and a pressurizing pump (533); the spray pipe (531) is arranged on the cleaning cylinder (51) and is communicated with the interior of the cleaning cylinder (51); the pressurizing pump (533) is arranged on the cleaning cylinder (51) and is connected with the spray pipe (531); the heating interlayer (534) is axially arranged in the pipe wall of the spray pipe (531); the hairbrushes (532) are uniformly arranged on the spray pipe (531) along the circumferential direction.

9. The eight-color intaglio printing press according to claim 1, wherein: the drying oven (7) comprises a heating assembly (71) and an air exhaust assembly (72), and the air exhaust assembly (72) is connected with the heating assembly (71); the heating assembly (71) comprises a plurality of heating pipes (711) and a fan (712), wherein the fan (712) is arranged between the heating pipes (711) and the printing roller (31); the exhaust assembly (72) comprises an exhaust box (721) and an air suction pump (722); the exhaust box (721) is arranged at the bottom of the drying box (7) and is communicated with the drying box (7); a filter screen (723) and an air outlet channel (724) are arranged on one side wall of the air exhaust box (721) close to the box body (1); the air suction pump (722) is arranged in the air discharge box (721), one end of the air suction pump is connected with the drying box (7) through a pipeline, and the pipeline connected with the other end of the air suction pump is arranged adjacent to the air outlet channel (724).

10. The eight-color intaglio printing press according to claim 2, wherein: the printing unit (2) further comprises a recovery mechanism (8), wherein the recovery mechanism (8) comprises a recovery box (81), a first recovery channel (82), a second recovery channel (83) and an overflow channel (84); the recovery box (81) is arranged below the ink box (34) and is fixed on the inner side wall of the box body (1); the first recovery channel (82) and the overflow channel (84) are arranged between the ink box (34) and the recovery box (81); the second recovery channel (83) is arranged between the recovery box (81) and the ink box (6), and a pressure pump is arranged on the second recovery channel (83).