CN215203944U

CN215203944U - Gravure device capable of printing in positive and negative directions

Info

Publication number: CN215203944U
Application number: CN202120040061.6U
Authority: CN
Inventors: 林正能
Original assignee: Shenzhen Zhengqi Machinery Co ltd
Current assignee: Shenzhen Zhengqi Machinery Co ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-12-17
Anticipated expiration: 2031-01-07

Abstract

The utility model belongs to the technical field of printing equipment, in particular to a gravure device capable of printing positively and negatively, which comprises a gravure mechanism, wherein the gravure mechanism comprises a frame with a supporting function, a plate cylinder component which can rotate and print, a rubber wheel component which can be driven by the plate cylinder component to rotate and further assist the plate cylinder component to print, and a printing ink tank component which can contaminate printing ink on the plate cylinder component; the rubber wheel assembly, the plate cylinder assembly and the ink groove assembly are all arranged on the rack, the plate cylinder assembly is movably connected with the rack in a rotatable mode, and a printing gap for printing products is formed between the plate cylinder assembly and the rubber wheel assembly; the device also comprises a guide mechanism for guiding the products before and after printing, and the guide mechanism corresponds to the front side and the rear side of the printing gap; the gravure printing mechanism also comprises two groups of scraper assemblies used for scraping ink on the plate cylinder assembly. The utility model discloses in, can be so that the assembly line that uses the device can the positive and negative two sides of printed product simultaneously.

Description

Gravure device capable of printing in positive and negative directions

Technical Field

The utility model belongs to the technical field of lithography apparatus, in particular to gravure device that can positive and negative printing.

Background

The intaglio printing is that the whole surface of printing plate is coated with ink, then the ink in blank portion is removed by using special ink-scraping mechanism, so that the ink can be remained in the cell of image-text portion, and under the action of larger pressure the ink can be transferred to the surface of printing material so as to obtain the invented printed matter. Gravure printing belongs to direct printing. The image-text part of the printing plate is concave, the concave degree is different with the depth of the image layer, and the blank part of the printing plate is convex and is on the same plane.

However, the existing gravure printing device can only print in one direction, and when a product is printed, the printed surface of the product in the printing device is not convenient to switch, so that the printing device is not flexible when being matched with other printing devices for printing; and the current gravure printing device need pay attention to its direction when assembling, avoids the dress to lead to on the contrary not normally using, when packing into the assembly line with the gravure printing device, very troublesome.

For example, patent application No. 1 of "CN 201520458426.1" discloses a full version lines gravure printing device, including connecting plate cylinder and the impression cylinder on the mount pad through the connecting axle, the impression cylinder below is equipped with plate cylinder, plate cylinder barrel surface can carve into different full version lines laser engraving intaglio according to the mesh degree of depth of difference, plate cylinder below is equipped with the ink fountain that is equipped with printing ink, plate cylinder one side is equipped with the scraper, and be equipped with the stock between plate cylinder and impression cylinder, the stock is made by the material that the blotting reinforce. In this comparison file 1, just there is above-mentioned prior art's defect, when this comparison file 1 applied to the assembly line, if need switch over the face of being printed of product, need with the product one side printing completion after, with the manual turn-over of product, the product after will turning over again prints through this gravure device, very troublesome.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model discloses a but gravure device of positive and negative printing, the device both can print the front of product on same assembly line, can print the reverse side of product again, can adjust the printing face of product according to the demand to make the assembly line that uses the device can print the positive and negative two sides of product simultaneously.

The utility model discloses a but gravure device of positive and negative printing, the device when installing on the assembly line, all normal use of positive and negative installation, it is more convenient to install.

In order to achieve the above object, the technical solution of the present invention is as follows.

A gravure device capable of printing positively and negatively comprises a gravure mechanism, wherein the gravure mechanism comprises a rack with a supporting function, a plate cylinder assembly capable of rotating and printing, a rubber wheel assembly capable of being driven by the plate cylinder assembly to rotate so as to assist the plate cylinder assembly in printing, and an ink tank assembly for staining ink on the plate cylinder assembly; the plate cylinder assembly and the rubber wheel assembly are rotatably and movably connected with the rack, and a printing gap for printing a product is formed between the plate cylinder assembly and the rubber wheel assembly; the device is characterized by also comprising a guide mechanism for guiding the products before and after printing, wherein the guide mechanism corresponds to the front side and the rear side of the printing gap; the gravure printing mechanism further comprises two groups of scraper assemblies used for scraping printing ink on the plate cylinder assembly, the two groups of scraper assemblies are movably arranged on the rack, and the two groups of scraper assemblies are respectively positioned on two sides of the plate cylinder assembly. In the device, the ink tank component is used for staining the ink on the plate cylinder component, the scraper component is used for scraping the ink on the plate cylinder component uniformly or scraping the unnecessary ink, at the moment, when a product passes through a printing gap, the ink on the plate cylinder component is printed on the rubber wheel component under the extrusion of the rubber wheel component, and the rubber wheel component can rotate under the driving of the plate cylinder component, so that the product is not tightly pressed to be fixed, but is discharged through the relative rotation of the plate cylinder component and the rubber wheel component while a certain pressure is given to the product, and the printing is finished; when the reverse side of the product needs to be printed, the product only needs to enter the printing gap from one side of the printing gap in a state that the reverse side is downward, the product is driven by the forward rotation of the plate cylinder assembly and the reverse side of the product is printed, and when the product comes out from the other side of the printing gap, the product enters a next step procedure through the guiding of the wire guiding mechanism; when the product is required to be printed on the front side, the product is required to enter the printing gap from the other side of the printing gap in a state that the front side faces downwards after being guided by the guide mechanism, the product is driven to be printed on the front side by virtue of the plate cylinder assembly in a reversing manner, and when the product comes out from one side of the printing gap, the product enters a next step process through the guide of the wire guide mechanism. In the device, because the plate cylinder assembly needs to rotate forwards and reversely, when the scraper assembly is arranged, the plate cylinder assembly can be used for well scraping the ink uniformly or scraping the unnecessary ink by the scraper assembly when rotating only in one direction, and the scraper assembly is limited by the angle setting of the scraper when rotating in the other direction, so that the ink scraping process cannot be well completed, the printing effect is poor, and the effect of double-sided printing is well realized; and the setting of above-mentioned two sets of scraper subassemblies for no matter the version section of thick bamboo subassembly is corotation or reversal, and two scraper subassemblies can both be fine scrape even or scrape unnecessary printing ink with printing ink. In conclusion, the device is arranged on the same production line, the front side and the back side of the product can be printed, and the printing side of the product can be adjusted according to requirements, so that the production line using the device can simultaneously print the front side and the back side of the product; and when the device is installed on a production line, the front and the back can be normally used when being installed, and the installation is more convenient.

Furthermore, the guide mechanism comprises a conversion material passing assembly which enables the front face of the product to face downwards and then enters from the rear side of the printing gap, a transition material passing assembly which guides the product after printing through the printing gap, and a guide material passing assembly which guides the product conveyed from the transition material passing assembly out of the device. When the front surface of a product needs to be printed, the front surface of the product faces downwards and then enters the printing from the rear side of the printing gap through the guide of the conversion feeding assembly; the transition feeding assembly can enable printed products to smoothly pass through the guide feeding assembly, so that the printed products are prevented from being blocked by other structures of the device, and the problem of inconvenient transmission is avoided; the material guiding-out component enables the printed product to be smoothly connected with the device of the next process when the printed product is guided out of the device.

Further, the conversion material passing assembly is arranged on the lower side of the gravure printing mechanism, the transition material passing assembly is arranged on the upper side of the gravure printing mechanism, and the derivation material passing assembly is arranged on the rear side of the gravure printing mechanism.

Further, the conversion material passing assembly comprises a first conversion material passing roller which is positioned below the gravure printing mechanism in an inclined mode, and the first conversion material passing roller corresponds to the rear side of the printing gap; the transition material passing assembly comprises a first transition material passing roller, a second transition material passing roller and a third transition material passing roller which are sequentially arranged side by side, the first transition material passing roller and the second transition material passing roller respectively correspond to the front side and the rear side of a printing gap, and the third transition material passing roller corresponds to the position of the derivation material passing assembly.

Further, the material guiding and passing assembly comprises a first material guiding and passing roller and a second material guiding and passing roller, the first material guiding and passing roller is positioned above the second material guiding and passing roller in an inclined mode, and the third material guiding and passing roller is positioned right above the first material guiding and passing roller; the conversion material passing assembly also comprises a second conversion material passing roller, the second conversion material passing roller is positioned at the front side of the first conversion material passing roller, and the second conversion material passing roller and the first conversion material passing roller are arranged side by side; the transition material passing assembly further comprises a fourth transition material passing roller, the fourth transition material passing roller corresponds to the third transition material passing roller in position, and the fourth transition material passing roller is located obliquely below the third transition material passing roller. That is, when the front printing is carried out, the product passes through the second conversion material passing roller to the first derivation material passing roller, and the process that the front of the product faces downwards is completed by the first derivation material passing roller, then the product enters from the rear side of the printing gap, the printing is started, the product comes out from the front side of the printing gap after the printing is completed, and the product passes through the first transition material passing roller, the second transition material passing roller and the fourth transition material passing roller in sequence, and then the product passes through the first derivation material passing roller and the second derivation material passing roller in sequence to guide and derive the device. When reverse side printing is carried out, the back side of a product downwards enters from the front side of a printing gap, and then the product is discharged from the rear side of the printing gap, and then the product is guided to the first derivation material passing roller through the fourth transition material passing roller, the second conversion material passing roller and the third conversion material passing roller after printing is finished, and then the product is guided to be derived through the first derivation material passing roller and the second derivation material passing roller.

Further, the scraper subassembly is including scraper, scraper movable assembly, the scraper activity sets up on scraper movable assembly, scraper movable assembly activity sets up in the frame, the scraper is close to or keeps away from a version section of thick bamboo subassembly under the drive of scraper movable assembly. The scraper is driven by the scraper movable assembly to be close to or far away from the plate cylinder assembly so as to realize the uniform scraping of the ink on the plate cylinder assembly or the scraping of the unnecessary ink.

The scraper component further comprises an ink distributing component, one end of the ink distributing component is connected with the scraper, the ink distributing component is fixedly arranged on the scraper movable component, the ink distributing component and the scraper move back and forth together under the driving of the scraper movable component, and the ink distributing component drives the scraper to move transversely; the ink mixing component comprises a scraper ink mixing motor and an ink mixing connecting rod, the ink mixing motor is fixedly arranged on the scraper movable component, and two ends of the ink mixing connecting rod are respectively connected with an output shaft of the ink mixing motor and the scraper. The ink distributing assembly drives the scraper to move transversely, so that the scraper can scrape ink particles more uniformly when scraping ink. Specifically, the ink distributing motor drives the ink distributing connecting rod to drive the scraper to move left and right, and the scraper can be connected with the scraper movable assembly through a sliding rail.

Further, the scraper moving assembly comprises a knife rest base and a knife rest driving assembly for driving the knife rest base to move back and forth, the knife rest base is movably connected with the rack through a sliding rail and sliding block structure, and the knife rest driving assembly is movably arranged on the rack; the tool rest driving assembly comprises a hand wheel, an adjusting rod and a screw rod, the hand wheel is fixedly arranged at one end of the adjusting rod, the adjusting rod is movably arranged on the rack in a rotatable mode, the adjusting rod is in transmission connection with the screw rod through a bevel gear structure, and the screw rod is movably connected with the tool rest base. The number of the screw rods is two, the two bevel gears are fixedly arranged on the adjusting rod at intervals, the bevel gears are fixedly arranged at the top ends of the two screw rods, and the adjusting rod is in transmission connection with the two screw rods through the two bevel gears. The scraper ink distributing motor is fixedly arranged on the upper side or the lower side of the tool rest base, and when the scraper ink distributing motor is fixed on the lower side, an output shaft of the scraper ink distributing motor penetrates through the tool rest base to be connected with the ink distributing connecting rod. Through rotating the hand wheel, the hand wheel drives the regulation pole, and adjusts the pole and pass through bevel gear structure and drive two lead screws and rotate for the lead screw drives the removal of knife rest base, with the realization control scraper is close to or keeps away from a version section of thick bamboo subassembly.

Furthermore, the plate cylinder assembly comprises a plate cylinder and a plate cylinder motor for driving the plate cylinder to rotate, the plate cylinder is rotatably and movably arranged on the rack, the plate cylinder motor is fixedly arranged on the rack, and the plate cylinder motor is in transmission connection with the plate cylinder; the two ends of the plate cylinder are sleeved with bearings, and the plate cylinder is movably arranged on the rack in a rotating mode through the bearings at the two ends of the plate cylinder; the plate cylinder motor is connected with a speed reducer and drives the plate cylinder to rotate through the speed reducer. Two sets of scraper subassemblies are set up respectively in version section of thick bamboo both sides, and two scrapers all correspond with a version section of thick bamboo. The plate cylinder is movably arranged on the frame in a rotatable mode through bearings at two ends of the plate cylinder, so that the plate cylinder is smooth when rotating.

Further, the rubber wheel assembly comprises a rubber wheel and a rubber wheel driving assembly used for driving the rubber wheel to enable the rubber wheel to be close to the plate cylinder assembly, the rubber wheel is rotatably and movably arranged on the rubber wheel driving assembly, and the rubber wheel driving assembly is movably arranged on the rack; the rubber wheel driving assembly comprises two connecting rods, a rubber wheel roller and a driving piece for driving the rubber wheel roller, two ends of the rubber wheel roller can be rotatably and movably arranged on the rack, one end of each of the two connecting rods is fixedly arranged on the rubber wheel roller, two ends of the rubber wheel are respectively rotatably and movably connected to the two connecting rods, and the rubber wheel roller is fixed with the driving piece; rubber tyer drive assembly is still including the pressure regulating locking wheel, the activity of pressure regulating locking wheel rotatable formula sets up in the frame, the fixed worm that is provided with on the pressure regulating locking wheel, the fixed worm wheel that is provided with on the driving piece, the worm of pressure regulating locking wheel and the worm wheel adaptation on the driving piece, the pressure regulating locking wheel is through control driving piece and then drive rubber tyer roller rotation. The pressure regulating lock wheel is manually controlled to rotate, and then the worm is matched with the worm wheel to drive the driving piece to rotate and further drive the rubber wheel roller to rotate, and when the rubber wheel roller rotates, the two connecting rods are driven to rotate around the rubber wheel roller, and finally the rubber wheel is driven to be close to the plate cylinder; the rubber wheel is a structure matched with the plate cylinder in the existing gravure printing device.

Furthermore, the ink tank assembly comprises an ink transfer roller for staining ink on the plate cylinder assembly and an ink tank for storing the ink; the activity of the rotatable formula of ink transfer roller sets up in the ink groove, just the laminating of ink transfer roller side and version section of thick bamboo subassembly. The side surface of the ink transfer roller is attached to the plate cylinder, and the ink transfer roller is driven by the plate cylinder to rotate together; when the ink transfer roller rotates in the ink groove, the ink in the ink groove can be brought to the plate cylinder.

The beneficial effects of the utility model reside in that, compared with the prior art, in the utility model, be infected with printing ink to the version section of thick bamboo subassembly by the ink fountain subassembly, scrape even or strike off the printing ink that does not need on the version section of thick bamboo subassembly through the scraper subassembly, when the product passes through the printing clearance at this moment, under the extrusion of rubber tyer subassembly, printing ink on the version section of thick bamboo subassembly is printed on the rubber tyer subassembly, and because the rubber tyer subassembly can rotate under the drive of the version section of thick bamboo subassembly, so can not tightly push down and make it motionless not the product, but discharge the product through the relative rotation of version section of thick bamboo subassembly and rubber tyer subassembly when giving the product certain pressure, in order to accomplish the printing; when the reverse side of the product needs to be printed, the product only needs to enter the printing gap from one side of the printing gap in a state that the reverse side is downward, the product is driven by the forward rotation of the plate cylinder assembly and the reverse side of the product is printed, and when the product comes out from the other side of the printing gap, the product enters a next step procedure through the guiding of the wire guiding mechanism; when the product is required to be printed on the front side, the product is required to enter the printing gap from the other side of the printing gap in a state that the front side faces downwards after being guided by the guide mechanism, the product is driven to be printed on the front side by virtue of the plate cylinder assembly in a reversing manner, and when the product comes out from one side of the printing gap, the product enters a next step process through the guide of the wire guide mechanism. In the device, because the plate cylinder assembly needs to rotate forwards and reversely, when the scraper assembly is arranged, the plate cylinder assembly can be used for well scraping the ink uniformly or scraping the unnecessary ink by the scraper assembly when rotating only in one direction, and the scraper assembly is limited by the angle setting of the scraper when rotating in the other direction, so that the ink scraping process cannot be well completed, the printing effect is poor, and the effect of double-sided printing is well realized; and the setting of above-mentioned two sets of scraper subassemblies for no matter the version section of thick bamboo subassembly is corotation or reversal, and two scraper subassemblies can both be fine scrape even or scrape unnecessary printing ink with printing ink. In conclusion, the device is arranged on the same production line, the front side and the back side of the product can be printed, and the printing side of the product can be adjusted according to requirements, so that the production line using the device can simultaneously print the front side and the back side of the product; and when the device is installed on a production line, the front and the back can be normally used when being installed, and the installation is more convenient.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of a first viewing angle of the gravure printing mechanism of the present invention.

Fig. 3 is a schematic structural view of a second viewing angle of the gravure printing mechanism of the present invention.

Fig. 4 is a schematic structural diagram of the product a of the present invention when printing on the front side.

Fig. 5 is a schematic structural diagram of a product a according to the present invention when reverse printing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A gravure printing device capable of printing positively and negatively comprises a gravure printing mechanism, wherein the gravure printing mechanism comprises a frame 1 with a supporting function, a plate cylinder component 2 capable of rotating and printing, a rubber wheel component 3 capable of being driven by the plate cylinder component 2 to rotate, and an ink tank component 4 for staining ink on the plate cylinder component 2; the plate cylinder assembly 2 is rotatably and movably connected with the rack 1, and a printing gap 5 for printing a product is formed between the plate cylinder assembly 2 and the rubber wheel assembly 3; the device is characterized by also comprising a guide mechanism 7 for guiding products before and after printing, wherein the guide mechanism 7 corresponds to the front side and the rear side of the printing gap 5; the gravure printing mechanism further comprises two groups of scraper assemblies 6 used for scraping printing ink on the plate cylinder assembly 2, the scraper assemblies 6 are movably arranged on the rack 1, and the scraper assemblies 6 are located on two sides of the plate cylinder assembly 2 respectively.

Further, the guide mechanism 7 includes a transition feeding assembly 71 for feeding the product from the rear side of the printing gap 5 with the front side facing downward, a transition feeding assembly 72 for guiding the product printed through the printing gap 5, and a discharge feeding assembly 73 for guiding the product fed from the transition feeding assembly 72 out of the apparatus.

Further, the conversion material passing assembly 71 is arranged at the lower side of the gravure printing mechanism, the transition material passing assembly 72 is arranged at the upper side of the gravure printing mechanism, and the derivation material passing assembly 73 is arranged at the rear side of the gravure printing mechanism.

Further, the converting material assembly 71 comprises a first converting material roller 711 positioned obliquely below the gravure printing mechanism, and the first converting material roller 711 corresponds to the rear side of the printing gap 5; the transitional feeding assembly 72 comprises a first transitional feeding roller 721, a second transitional feeding roller 722 and a third transitional feeding roller 723 which are sequentially arranged side by side, wherein the first transitional feeding roller 721 and the second transitional feeding roller 722 respectively correspond to the front side and the rear side of the printing gap 5, and the third transitional feeding roller 723 corresponds to the position of the leading-out feeding assembly 73.

Further, the leading-out material passing assembly 73 comprises a first leading-out material passing roller 731 and a second leading-out material passing roller 732, the first leading-out material passing roller 731 is positioned obliquely above the second leading-out material passing roller 732, and the third transitional material passing roller 733 is positioned right above the first leading-out material passing roller 731; the converting and feeding assembly 71 further comprises a second converting and feeding roller 712, wherein the second converting and feeding roller 712 is positioned at the front side of the first converting and feeding roller 711, and the two rollers are arranged side by side; the transitional feeding assembly 72 further comprises a fourth transitional feeding roller 724, the fourth transitional feeding roller 724 corresponds to the third transitional feeding roller 723 in position, and the fourth transitional feeding roller 724 is located obliquely below the third transitional feeding roller 723. As shown in fig. 1, 3 and 4, the transition material passing assembly and the lead-out material passing assembly can be arranged on a supporting plate or a supporting frame, and the supporting mode is the prior art; the conversion material passing assembly is not shown to be specifically arranged on what structure, and can be arranged on a supporting plate or a supporting frame, and is also the prior art.

Further, scraper subassembly 6 is including scraper 61, scraper movable assembly, scraper 61 activity sets up on scraper movable assembly, scraper movable assembly activity sets up in frame 1, scraper 61 is close to or keeps away from version section of thick bamboo subassembly 2 under scraper movable assembly's the drive.

Further, the scraper component 6 further comprises an ink distributing component 62, one end of the ink distributing component 62 is connected with the scraper 61, the ink distributing component 62 is fixedly arranged on the scraper movable component, the ink distributing component 62 and the scraper 61 move back and forth together under the driving of the scraper movable component, and the ink distributing component drives the scraper to move transversely; the ink distributing component 62 comprises a scraper ink distributing motor 621 and an ink distributing connecting rod 622, the ink distributing motor 621 is fixedly arranged on the scraper movable component, and two ends of the ink distributing connecting rod 622 are respectively connected with an output shaft of the ink distributing motor 621 and the scraper 61.

Further, the scraper moving assembly comprises a knife rest base 63 and a knife rest driving assembly for driving the knife rest base 63 to move back and forth, the knife rest base 63 is movably connected with the rack 1 through a slide rail and slide block structure, and the knife rest driving assembly is movably arranged on the rack 1; the tool rest driving assembly comprises a hand wheel 64, an adjusting rod 65 and a screw rod 66, the hand wheel 64 is fixedly arranged at one end of the adjusting rod 65, the adjusting rod 65 is rotatably and movably arranged on the rack 1, the adjusting rod 65 is in transmission connection with the screw rod 66 through a bevel gear structure, and the screw rod 66 is movably connected with the tool rest base 63.

Further, the plate cylinder assembly 2 comprises a plate cylinder 21 and a plate cylinder motor 22 for driving the plate cylinder 21 to rotate, the plate cylinder 21 is movably arranged on the frame 1 in a rotatable manner, the plate cylinder motor 22 is fixedly arranged on the frame 1, and the plate cylinder motor 22 is in transmission connection with the plate cylinder 21; the two ends of the plate cylinder 21 are sleeved with bearings 23, and the plate cylinder 21 is rotatably and movably arranged on the rack 1 through the bearings 23 at the two ends; the plate cylinder motor 22 is connected with a speed reducer 24, and the plate cylinder motor 22 drives the plate cylinder 21 to rotate through the speed reducer 24.

Further, the rubber wheel assembly 3 comprises a rubber wheel 31 and a rubber wheel driving assembly for driving the rubber wheel to enable the rubber wheel to be close to the plate cylinder 21, the rubber wheel 31 is rotatably and movably arranged on the rubber wheel driving assembly, and the rubber wheel driving assembly is movably arranged on the frame 1; the rubber wheel driving assembly comprises two connecting rods 32, a rubber wheel roller 33 and a driving piece 34 for driving the rubber wheel roller 33, wherein both ends of the rubber wheel roller 33 can be rotatably and movably arranged on the frame 1, one end of each of the two connecting rods 32 is fixedly arranged on the rubber wheel roller 33, both ends of the rubber wheel 31 are respectively rotatably and movably connected to the two connecting rods 32, and the rubber wheel roller 33 is fixed with the driving piece 34; rubber tyer drive assembly is still including pressure regulating locking wheel 35, the activity of pressure regulating locking wheel 35 rotatable formula sets up in frame 1, fixed worm 351 that is provided with on the pressure regulating locking wheel 35, the fixed worm wheel 341 that is provided with on the driving piece 34, the worm 351 of pressure regulating locking wheel 35 and the worm wheel 341 adaptation on the driving piece 34, pressure regulating locking wheel 35 is through control driving piece 34 and then drive rubber tyer roller 33 rotates.

Further, the ink tank assembly 4 includes an ink transfer roller (not shown, prior art) for applying ink to the plate cylinder 21, an ink tank 41 for storing ink; the activity of 41 rotatable formulas of distributor roller sets up in ink groove 41, just the distributor roller side is laminated with a version section of thick bamboo 21.

The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the design of the present invention within the technical scope of the present invention.

Claims

1. A gravure device capable of printing positively and negatively comprises a gravure mechanism, wherein the gravure mechanism comprises a rack with a supporting function, a plate cylinder assembly capable of rotating and printing, a rubber wheel assembly capable of being driven by the plate cylinder assembly to rotate so as to assist the plate cylinder assembly in printing, and an ink tank assembly for staining ink on the plate cylinder assembly; the plate cylinder assembly and the rubber wheel assembly are rotatably and movably connected with the rack, and a printing gap for printing a product is formed between the plate cylinder assembly and the rubber wheel assembly; the device is characterized by also comprising a guide mechanism for guiding the products before and after printing, wherein the guide mechanism corresponds to the front side and the rear side of the printing gap; the gravure printing mechanism further comprises two groups of scraper assemblies used for scraping printing ink on the plate cylinder assembly, the two groups of scraper assemblies are movably arranged on the rack, and the two groups of scraper assemblies are respectively positioned on two sides of the plate cylinder assembly.

2. The gravure printing apparatus for positive and negative printing according to claim 1, wherein the guide mechanism includes a transfer unit for feeding the product from a rear side of the printing gap after the product is printed with the front side facing downward, a transition unit for guiding the product after printing through the printing gap, and a discharge unit for discharging the product fed from the transition unit out of the apparatus.

3. The gravure printing device for positive and negative printing according to claim 2, wherein the converting material member is disposed at a lower side of the gravure printing mechanism, the transferring material member is disposed at an upper side of the gravure printing mechanism, and the discharging material member is disposed at a rear side of the gravure printing mechanism.

4. The gravure printing apparatus for positive and negative printing according to claim 3, wherein the converting feed unit includes a first converting feed cylinder located obliquely below the gravure printing mechanism, the first converting feed cylinder corresponding to a rear side of the printing gap; the transition material passing assembly comprises a first transition material passing roller, a second transition material passing roller and a third transition material passing roller which are sequentially arranged side by side, the first transition material passing roller and the second transition material passing roller respectively correspond to the front side and the rear side of a printing gap, and the third transition material passing roller corresponds to the position of the derivation material passing assembly.

5. The gravure printing device capable of positive and negative printing according to claim 4, wherein the discharging and passing assembly comprises a first discharging and passing roller and a second discharging and passing roller, the first discharging and passing roller is positioned obliquely above the second discharging and passing roller, and the third transitional passing roller is positioned directly above the first discharging and passing roller; the conversion material passing assembly also comprises a second conversion material passing roller, the second conversion material passing roller is positioned at the front side of the first conversion material passing roller, and the second conversion material passing roller and the first conversion material passing roller are arranged side by side; the transition material passing assembly further comprises a fourth transition material passing roller, the fourth transition material passing roller corresponds to the third transition material passing roller in position, and the fourth transition material passing roller is located obliquely below the third transition material passing roller.

6. The gravure printing device for positive and negative printing according to claim 1, wherein the scraper assembly comprises a scraper and a scraper moving assembly, the scraper is disposed on the scraper moving assembly, the scraper moving assembly is movably disposed on the frame, and the scraper is driven by the scraper moving assembly to approach or be away from the plate cylinder assembly.

7. The gravure printing device capable of forward and reverse printing according to claim 6, wherein the scraper assembly further comprises an ink distributing assembly, one end of the ink distributing assembly is connected with the scraper, the ink distributing assembly is fixedly arranged on the scraper movable assembly, the ink distributing assembly and the scraper move forward and backward together under the driving of the scraper movable assembly, and the ink distributing assembly drives the scraper to move in a transverse direction; the ink mixing component comprises a scraper ink mixing motor and an ink mixing connecting rod, the ink mixing motor is fixedly arranged on the scraper movable component, and two ends of the ink mixing connecting rod are respectively connected with an output shaft of the ink mixing motor and the scraper.

8. The gravure printing device capable of forward and reverse printing according to claim 6, wherein the scraper moving assembly comprises a tool rest base and a tool rest driving assembly for driving the tool rest base to move forward and backward, the tool rest base is movably connected with the frame through a sliding rail and sliding block structure, and the tool rest driving assembly is movably arranged on the frame; the tool rest driving assembly comprises a hand wheel, an adjusting rod and a screw rod, the hand wheel is fixedly arranged at one end of the adjusting rod, the adjusting rod is movably arranged on the rack in a rotatable mode, the adjusting rod is in transmission connection with the screw rod through a bevel gear structure, and the screw rod is movably connected with the tool rest base.

9. The gravure printing device for positive and negative printing according to claim 1, wherein the plate cylinder assembly includes a plate cylinder and a plate cylinder motor for driving the plate cylinder to rotate, the plate cylinder is rotatably and movably disposed on the frame, the plate cylinder motor is fixedly disposed on the frame, and the plate cylinder motor is in transmission connection with the plate cylinder; the two ends of the plate cylinder are sleeved with bearings, and the plate cylinder is movably arranged on the rack in a rotating mode through the bearings at the two ends of the plate cylinder; the plate cylinder motor is connected with a speed reducer and drives the plate cylinder to rotate through the speed reducer.

10. The gravure printing device for positive and negative printing according to claim 1, wherein the rubber wheel assembly includes a rubber wheel and a rubber wheel driving assembly for driving the rubber wheel so that the rubber wheel is adjacent to the cylinder assembly, the rubber wheel is rotatably and movably disposed on the rubber wheel driving assembly, and the rubber wheel driving assembly is movably disposed on the frame; the rubber wheel driving assembly comprises two connecting rods, a rubber wheel roller and a driving piece for driving the rubber wheel roller, two ends of the rubber wheel roller can be rotatably and movably arranged on the rack, one end of each of the two connecting rods is fixedly arranged on the rubber wheel roller, two ends of the rubber wheel are respectively rotatably and movably connected to the two connecting rods, and the rubber wheel roller is fixed with the driving piece; rubber tyer drive assembly is still including the pressure regulating locking wheel, the activity of pressure regulating locking wheel rotatable formula sets up in the frame, the fixed worm that is provided with on the pressure regulating locking wheel, the fixed worm wheel that is provided with on the driving piece, the worm of pressure regulating locking wheel and the worm wheel adaptation on the driving piece, the pressure regulating locking wheel is through control driving piece and then drive rubber tyer roller rotation.