CN218838917U - Gravure printing roller closed scraper device - Google Patents

Abstract

The utility model discloses a closed scraper device of gravure printing roller, including the casing with connect in the scraper subassembly of casing, the casing is connected with the drive roll, the drive roll is located the upper portion of casing. The casing rotates and is connected with the intaglio roller, the drive roll cooperation the intaglio roller drives the substrate and accomplishes printing or coating, intaglio roller part stretch out in the casing, the intaglio roller stretches out the part of casing is the fan-shaped form that the angle is 105, the scraper subassembly with the edge of the extension of intaglio roller is adjacent, the tip butt of scraper subassembly the outer wall of intaglio roller. The area of the gravure printing roller exposed outside the air is reduced to the maximum extent, the volatilization of the organic resin mixture on the gravure printing roller is reduced, the screen hole plugging on the gravure printing roller caused by the residual organic resin is further reduced by matching with a scraper, and the quality of a printed product printed and coated on a base material can be fully improved.

Description

Gravure printing roller closed scraper device

Technical Field

The utility model relates to a coating equipment technical field, in particular to gravure printing roller closed scraper device.

Background

At present, in the process of using a gravure roller to transfer and coat organic resin on a substrate, a small-area closed scraper system is adopted for redundant resin mixture outside a grid hole of the gravure roller, the closed scraper system only seals one sixth area of the surface area of the gravure roller, the other five sixth areas are exposed in the air, the grid hole containing a solvent is exposed in the air, a part of small molecules and volatile solvent in the grid hole can be released into the air to cause pollution and potential safety hazards, a part of solvent and binder resin are retained in the grid hole, the binder resin in the grid hole can slowly thicken and have poor liquidity, the grid hole can be blocked for a long time, and the printing, coating effect and quality of the substrate are not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a closed scraper device of gravure printing roller can reduce the area that gravure printing roller exposed, can fully improve the printing quality of printing, coating on the substrate.

According to the utility model discloses a closed scraper device of gravure printing roller of first aspect embodiment, including the casing with connect in the scraper subassembly of casing, the casing is connected with the drive roll, the drive roll is located the upper portion of casing. The casing rotates and is connected with the intaglio roller, the drive roll cooperation the intaglio roller drives the substrate and accomplishes printing or coating, intaglio roller part stretch out in the casing, the intaglio roller stretches out the part of casing is the fan-shaped form that the angle is 105, the scraper subassembly with the edge of the extension of intaglio roller is adjacent, the tip butt of scraper subassembly the outer wall of intaglio roller.

According to the utility model discloses closed scraper device of gravure printing roller has following beneficial effect at least:

according to some embodiments of the utility model, the scraper subassembly includes first scraper, fixing base and briquetting, first scraper passes through the briquetting slope set up in the fixing base, the tip butt of first scraper in one side outer wall of the portion of stretching out of gravure printing roller, the fixing base is connected with position control bolt, the fixing base passes through position control bolt sliding connection in the casing.

According to some embodiments of the utility model, the briquetting is connected with angle adjusting bolt, the briquetting passes through angle adjusting bolt adjusts the angle of first scraper.

According to some embodiments of the utility model, still include the second scraper, the second scraper connect in the casing, just the second scraper with the fixed mode of first scraper is the same, the second scraper with first scraper position set up relatively in the opposite side of the extension of intaglio printing roller, the tip butt of second scraper in the outer wall of intaglio printing roller.

According to some embodiments of the invention, the shell comprises a baffle plate arranged around the periphery of the gravure printing roll, the baffle plate being a polytetrafluoroethylene product.

According to some embodiments of the utility model, the casing is connected with the water conservancy diversion passageway, the water conservancy diversion passageway is located the below of gravure roll, the water conservancy diversion passageway is connected with collects household utensils.

According to the utility model discloses a some embodiments, it is connected with the back flow to collect household utensils, collect household utensils with connect through the power delivery pump between the back flow, the casing is provided with the backward flow passageway, the backward flow passageway is close to the tip of gravure printing roller one side is provided with the shower nozzle, the back flow connect in the backward flow passageway.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic view of a gravure roll closed type doctor apparatus according to an embodiment of the present invention.

Reference numerals: a housing 100; a baffle 101; a first blade 110; a fixed base 111; a briquette 112; a position adjusting bolt 13; an angle adjusting bolt 114; a second scraper 115; a flow guide passage 120; a return channel 130; a shower head 131; a gravure roll 200; a collection vessel 300; a return pipe 301; a drive roller 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

At present, in the process of using a gravure roller to transfer and coat organic resin on a substrate, a small-area closed scraper system is adopted for redundant resin mixture outside a grid hole of the gravure roller, the closed scraper system only seals one sixth area of the surface area of the gravure roller, the other five sixth areas are exposed in the air, the grid hole containing a solvent is exposed in the air, a part of small molecules and volatile solvent in the grid hole can be released into the air to cause pollution and potential safety hazards, a part of solvent and binder resin are retained in the grid hole, the binder resin in the grid hole can slowly thicken and have poor liquidity, the grid hole can be blocked for a long time, and the printing, coating effect and quality of the substrate are not facilitated.

For this reason, referring to fig. 1, the utility model provides a gravure printing roller closed type scraper device, including casing 100 and the scraper subassembly of connecting in casing 100, casing 100 is connected with drive roll 400, and drive roll 400 is located the upper portion of casing 100. The shell 100 is rotatably connected with the gravure printing roller 200, the driving roller 400 is matched with the gravure printing roller 200 to drive the substrate to finish printing or coating, the gravure printing roller 200 partially extends out of the shell 100, the part of the gravure printing roller 200 extending out of the shell 100 is in a fan shape with an angle of 105 degrees, the scraper component is adjacent to the edge of the extending part of the gravure printing roller 200, and the end part of the scraper component is abutted to the outer wall of the gravure printing roller 200. It can be understood that the sector angle of gravure roller exposed in the air is 105, and the sector angle of gravure roller wrapped up in casing 100 by closed scraper device is 255, the utility model discloses the technique furthest has reduced the area that gravure roller exposes in the air, and scraper cooperation gravure roller 200 scrapes away the unnecessary resin material in gravure roller 200 surface, can prevent that the resin from remaining, can fully improve the printing, the printed matter quality of coating on the substrate, reduces the defective rate to can reduce gravure roller 200's the cleaning frequency and the washing degree of difficulty. Furthermore, the area of the gravure roller exposed in the air is reduced, the volatilization amount of the solvent in the cells of the gravure roller can be reduced, the number of times and the number of subsequent solvent addition are reduced, the extra cost caused by the useless loss of auxiliary materials is reduced to the maximum extent, the environment-friendly effect is achieved, the air pollution is reduced, the concentration of the solvent in the air near the gravure roller 200 is reduced, the probability that the volatile solvent is ignited due to the fact that the rubber compression roller and the material generate electrostatic sparks is reduced, and the potential safety hazard is reduced. It is understood that the casing 100 includes a polytetrafluoroethylene baffle 101 disposed around the periphery of the gravure roll 200, and the baffle 101 is matched with the gravure roll 200 to prevent splashing of the resin material and the solvent, thereby preventing the organic solvent from volatilizing out of the casing 100.

Referring to fig. 1, the doctor assembly includes a first doctor blade 110, a fixing seat 111 and a pressing block 112, the first doctor blade 110 is obliquely disposed on the fixing seat 111 through the pressing block 112, an end portion of the first doctor blade 110 abuts against an outer wall of one side of an extending portion of the gravure roll 200, the fixing seat 111 is connected with a position adjusting bolt 13, and the fixing seat 111 is slidably connected to the housing 100 through the position adjusting bolt 13. The pressing block 112 is connected with an angle adjusting bolt 114, and the pressing block 112 adjusts the angle of the first scraper 110 through the angle adjusting bolt 114. It is understood that the position and the inclination angle of the first blade 110 may be adjusted by the position adjustment bolt 13 and the angle adjustment bolt 114, respectively, according to the size of the diameter of the gravure roll 200 or the desired color of the printing color of the substrate to meet different production requirements. Further, the end of the first doctor blade 110 is pressed against the outer wall of the gravure roll 200 by the position adjustment bolts 13 and the angle adjustment bolts 114 to ensure that the excess organic resin and solvent can be scraped clean.

Further, the doctor assembly further includes a second doctor blade 115, the second doctor blade 115 is connected to the housing 100, the second doctor blade 115 is fixed to the first doctor blade 110 in the same manner, the second doctor blade 115 is disposed opposite to the first doctor blade 110 on the other side of the protruding portion of the gravure roll 200, and an end portion of the second doctor blade 115 abuts against an outer wall of the gravure roll 200. The first and second doctor blades 110 and 115 are symmetrically disposed at both sides of the gravure roll 200 with respect to the axis of the gravure roll 200 and are located at both end edges of the protruding portion of the gravure roll 200 to form a sealed space in cooperation with the housing 100, thereby reducing volatilization of organic resin and solvent. The first scraper 110 and the second scraper 115 cooperate to form a V-shaped structure, the first scraper 110 and the second scraper 115 cooperate with each other to scrape the excess resin solvent mixture on the plate roll into the housing 100, and the protruding part of the gravure roll 200, i.e. the open air and the fluid resin mixture, can transfer the mixture of the solvent, the fluid resin and the like to the base material to complete the printing or coating action.

Referring to fig. 1, a guide passage 120 is connected to a case 100, the guide passage 120 is located below an intaglio printing roller 200, and a collection vessel 300 is connected to the guide passage 120. The collecting vessel 300 is connected with a return pipe 301, the collecting vessel 300 is connected with the return pipe 301 through a power transmission pump, the shell 100 is provided with a return channel 130, the end part of the return channel 130, close to one side of the gravure printing roller 200, is provided with a spray nozzle 131, and the return pipe 301 is connected with the return channel 130. The first scraper 110 and the second scraper 115 scrape the redundant organic resin mixture to drop into the casing 100, the mixture can enter the collecting vessel 300 through the flow guide channel 120 under the action of gravity, enter the return channel 130 through the return pipe 301 under the action of the power delivery pump, and then be sprayed on the surface of the gravure printing pipe again through the spray head 131 on the return channel 130, so that the organic resin mixture can be repeatedly and circularly utilized, the cost caused by meaningless materials is reduced, and the material waste is avoided. Further, the backflow channel 130 and the spray head 131 are both disposed inside the casing 100, and the recycled organic resin mixture is sprayed on the gravure roll 200 inside the casing 100, so that the solvent is prevented from being volatilized and wasted, and additional potential safety hazards are avoided. Alternatively, the return channel 130 may be provided in plurality to uniformly spray on the outer wall of the gravure roll 200, ensuring the effect and quality of printing, coating. Optionally, the spray head 131 is in the form of a duckbill-shaped head to further ensure that the recycled organic resin mixture is sufficiently uniformly adhered to the surface of the gravure roll 200.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (7)

1. The utility model provides a closed scraper device of gravure printing roller which characterized in that includes:

a housing;

a scraper assembly connected to the housing;

the driving roller is connected to the shell and is positioned at the upper part of the shell;

gravure roll, rotate connect in the casing, the drive roll cooperation gravure roll drives the substrate and accomplishes printing or coating, gravure roll part stretch out in the casing, gravure roll stretches out the part of casing is the fan-shaped form that the angle is 105, the scraper subassembly with the edge of the extension of gravure roll is adjacent, the tip butt of scraper subassembly the outer wall of gravure roll.

2. The gravure roll closed scraper device according to claim 1, wherein the scraper assembly includes a first scraper, a fixing seat and a pressing block, the first scraper is obliquely disposed on the fixing seat through the pressing block, an end of the first scraper abuts against an outer wall of one side of the protruding portion of the gravure roll, the fixing seat is connected with a position adjusting bolt, and the fixing seat is slidably connected to the housing through the position adjusting bolt.

3. The gravure roll enclosed doctor apparatus according to claim 2, wherein an angle adjusting bolt is connected to the press block, and the press block adjusts the angle of the first doctor blade by the angle adjusting bolt.

4. The gravure roll closed type scraper device according to claim 3, further comprising a second scraper connected to the housing, wherein the second scraper is fixed in the same manner as the first scraper, the second scraper is disposed opposite to the first scraper on the other side of the protruding portion of the gravure roll, and an end of the second scraper abuts against an outer wall of the gravure roll.

5. The gravure roll enclosed doctor apparatus of claim 1, wherein the housing includes a baffle plate disposed around the periphery of the gravure roll, the baffle plate being a polytetrafluoroethylene article.

6. The gravure roll enclosed doctor apparatus of claim 1, wherein the housing is connected to a flow guide channel, the flow guide channel being located below the gravure roll, the flow guide channel being connected to a collection vessel.

7. The intaglio roller closed type scraper device according to claim 6, wherein the collection vessel is connected with a return pipe, the collection vessel is connected with the return pipe through a power transmission pump, the housing is provided with a return passage, the end part of the return passage close to one side of the intaglio roller is provided with a spray head, and the return pipe is connected with the return passage.

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