CN217911220U

CN217911220U - Micro-concave roller for interval coating and coating device with micro-concave roller

Info

Publication number: CN217911220U
Application number: CN202220661248.2U
Authority: CN
Inventors: 龙广; 户清华; 陈鹏
Original assignee: Dongguan Aozhongxin Material Technology Co ltd
Current assignee: Dongguan Aozhongxin Material Technology Co ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-11-29
Anticipated expiration: 2032-03-24

Abstract

The utility model discloses a micro-concave roller for interval coating and a coating device with the same, which comprises a main shaft, wherein the outer surface of the main shaft is provided with a feeding part, and the feeding part comprises a carving part and a smooth part which are arranged at intervals in a staggered way in sequence; the carving portion comprises a plurality of snake-shaped grooves formed by inwards recessing, the snake-shaped grooves extend along the circumferential direction of the main shaft, and the extending direction of the snake-shaped grooves is perpendicular to the central line of the main shaft. The utility model discloses a this structural design mode can make snakelike recess parallel with the direction of motion of coating substrate for the coating liquid only receives the power of upper and lower direction, avoids the coating liquid toward piling up on one side, thereby improves one side thick limit when interval coating operation, and the coating weight of another side is not enough and the uneven sagging phenomenon in edge appears. And the space size of the carving part and the smooth part can be customized according to the specific size of the space adhesive tape, the coated space adhesive film can be subjected to striping to complete the production process of the space adhesive tape, and the structural design is simple and reasonable.

Description

Micro-concave roller for interval coating and coating device with micro-concave roller

Technical Field

The utility model relates to a film coating technical field especially relates to a little concave roller of interval coating usefulness and have its coating unit.

Background

The thick edge (also called fat edge) is always the difficult problem in the industry of coating the film adhesive tape by the oblique line type micro-concave roller, the thickness of the coated film is 3-5 mu m thicker than that of the middle area within the range of 2-5 mm by adopting the oblique line type micro-concave roller, and the thick edge can cause bad effect on the subsequent processing of the film and can not be rolled for the coating of a thin layer with the dry thickness within 10 mu m. In addition, the micro concave roller with the oblique line net type design is adopted, the net hole groove and the micro concave roller form an angle of 45-65 degrees, glue in the net holes rotates along with the micro concave roller and flows along the net hole groove, glue aggregation is formed at the edge, and after the aggregated glue is coated, a phenomenon of sagging (uneven edge) is easily generated at the edge.

Furthermore, on the basis of full-width (more than 1000 mm) micro-concave coating, by changing the engraving width of the mesh holes, interval mesh rollers are manufactured, wherein the engraving areas and the blank areas are distributed at intervals, if the mesh design still adopts oblique line design, the edge of each engraving area can generate thick edges and sagging phenomena, and the thick edges bring great challenges to the later-stage strip winding of the film and are difficult to wind into adhesive tapes with regular end surfaces.

Therefore, there is a need in the art to provide a micro-gravure roll for gap coating that is less prone to edge-thickening and sagging problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome above-mentioned prior art at least one defect, the utility model provides a little concave roller of interval coating usefulness and have its coating unit, this little concave roller of interval coating usefulness and have its coating unit have the characteristics that structural design is simple reasonable and difficult production coating thick limit, sagging phenomenon.

The utility model discloses a solve the technical scheme that its problem adopted and be:

the micro-concave roller for interval coating comprises a main shaft, wherein a feeding part is arranged on the outer surface of the main shaft and comprises a carving part and a smooth part, the carving part and the smooth part are sequentially arranged in a staggered and interval mode, and the positions of two ends of the main shaft are respectively arranged as the smooth part;

the carving portion comprises a plurality of snake-shaped grooves formed by inwards recessing, the snake-shaped grooves extend along the circumferential direction of the main shaft, and the extending direction of the snake-shaped grooves is perpendicular to the central line of the main shaft.

Furthermore, the S-shaped arc grooves are spliced end to end along the circumferential direction of the main shaft to form the snake-shaped groove.

Furthermore, the mesh number h of the serpentine groove is 40-200.

Further, the distance between the carving part and the central line of the main shaft is a, the distance between the smoothing part and the central line of the main shaft is b, and b-a is less than 5 μm.

Further, the micro-concave roller for interval coating also comprises assembling parts, wherein the assembling parts are arranged at two ends of the main shaft and are used for being assembled and connected with an external transmission shaft through bearings.

Based on same design, the utility model also provides a coating device, this coating device includes above arbitrary the little concave roller of interval coating usefulness.

Further, the coating device also comprises a coating groove, wherein the coating groove is internally provided with a coating liquid and is used for placing the micro-concave roller for interval coating.

Further, the coating liquid is an acrylic resin solution, the solid content c of the coating liquid is 20% -30%, and the viscosity d of the coating liquid is 100-400 cps.

Further, the coating device also comprises a scraper which is arranged at the top of the coating groove and is adjacent to the micro-concave roller for interval coating, and is used for scraping off redundant coating liquid at the smooth part and the carving part.

Further, the coating device also comprises a coating substrate, wherein the coating substrate is arranged on the top of the micro-concave roller for interval coating and is in contact with the micro-concave roller for interval coating; the coating base material and the main shaft are arranged in parallel, and the rotation direction of the main shaft is opposite to the movement direction of the coating base material.

To sum up, the utility model provides a little concave roller of interval coating usefulness and coating unit who has it compare in prior art, have following technological effect at least:

1) The utility model provides a little concave roller of interval coating usefulness and coating unit who has it, the sculpture portion of its main shaft adopts snakelike groove design, and snakelike groove extends the setting along the circumferential direction of main shaft, also the central line that its extending direction and main shaft are mutually perpendicular, through this structural design mode, can make snakelike groove parallel with the direction of motion of coating substrate, make the coating liquid only receive the power of upper and lower direction, do not have the effort of left and right directions, avoid the coating liquid to pile up on one side, thereby improve one side thick limit when interval coating operation, the uneven sagging phenomenon in edge appears in the another side coating volume inadequately;

2) The utility model provides a little concave roller of interval coating usefulness, the interval size customization of its sculpture portion and smooth portion can be according to the specific size of interval sticky tape, and the interval glued membrane that the coating came out can accomplish the production process of interval sticky tape through dividing the strip, and structural design is simple reasonable, easy and simple to handle.

Drawings

FIG. 1 is a schematic view of a micro-gravure roll for space coating according to the present invention;

wherein the reference numerals have the following meanings:

1. a main shaft; 2. a feeding part; 3. a carving section; 31. a serpentine groove; 4. a smooth portion; 5. and an assembling part.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, according to the embodiment of the present invention, the micro concave roller for interval coating includes a main shaft 1, the outer surface of the main shaft 1 is provided with a material loading portion 2, the material loading portion 2 includes an engraving portion 3 and a smooth portion 4, the engraving portion 3 and the smooth portion 4 are sequentially arranged at staggered intervals, and both end positions of the main shaft 1 are arranged as the smooth portion 4. Wherein, the loading part 2 of the main shaft 1 is used for contacting with the coating substrate to complete the coating operation, and the loading part 2 is provided with a plurality of engraving parts 3 and a plurality of smoothing parts 4 at intervals according to the required interval coating size.

In the technical solution of this embodiment, the carving portion 3 includes several serpentine grooves 31 formed by inward recessing, the serpentine grooves 31 extend along the circumferential direction of the main shaft 1, and the extending direction of the serpentine grooves is perpendicular to the center line of the main shaft 1. Specifically, the engraving part 3 engraves a plurality of serpentine grooves 31 formed by being recessed inward, and the specific number and depth of the serpentine grooves 31 can be set according to the coating amount requirement. More specifically, the serpentine groove 31 extends along the circumferential direction of the main shaft 1, that is, the extending direction of the serpentine groove 31 is perpendicular to the center line of the main shaft 1. Through the structural design mode, the rotation direction of the snake-shaped groove 31 is parallel to the movement direction of the coating substrate, so that the coating liquid in the groove is only subjected to the force in the vertical direction, the acting force in the left-right direction is avoided, and the accumulation of the coating liquid in the groove along one side is avoided, so that the phenomenon of irregular edge sagging caused by insufficient coating amount on one side and thick edge in the interval coating operation in the prior art is avoided.

As a preferred embodiment, in the technical scheme of the utility model, snakelike recess 31 is followed by a plurality of "S" shape pitch arc recess the concatenation of the circumference direction head and the tail of main shaft 1 forms to form many wave pitch arc lines that extend in succession and arrange.

As an optional implementation manner, in the technical solution of the present invention, the mesh number h of the serpentine groove 31 may be 40 to 200, and the mesh number and the depth of the serpentine groove 31 may be set according to the requirement of the coating amount. More specifically, the present invention is directed to a number of grooves per square centimeter of area.

In a preferred embodiment, in the present invention, the distance between the engraved portion 3 and the center line of the main shaft 1 is a, and the distance between the smooth portion 4 and the center line of the main shaft 1 is b, so that b-a < 5 μm. Specifically, the serpentine groove 31 of the engraved portion 3 is formed by continuous constant laser engraving to make the surface thereof smooth. After the micro-concave roller is subjected to laser engraving, the smooth part 4 and the engraved part 3 of the micro-concave roller are simultaneously polished once by adopting a 9 mu abrasive belt, and the smooth part 4 and the engraved part 3 of the micro-concave roller are polished by adopting a 3 mu abrasive belt. After finishing polishing, detecting the radial height difference (namely the difference between a and b) of the carving part 3 and the smoothing part 4, and controlling the radial height difference within 5 μm, thereby ensuring that the difference between the coating amount within 2mm of two sides of the carving part 3 and the coating amount of the middle area is less than 1 μm, and improving the thick edge problem of interval coating.

As a preferred embodiment, in the technical solution of the present invention, the micro-concave roller for interval coating further includes an assembling portion 5, the assembling portion 5 is disposed at two ends of the main shaft 1, and is used for assembling and connecting with an external transmission shaft through a bearing, so that the main shaft 1 can be driven to rotate by an external driving mechanism (such as a motor) to complete a subsequent interval coating operation.

Based on same design, the utility model also provides a coating device, this coating device includes above embodiment the little concave roller of interval coating usefulness.

In a preferred embodiment, the coating apparatus further includes a coating tank in which the coating liquid is placed, and the coating tank is used for placing the micro-concave roller for space coating. Specifically, the coating liquid in the coating bath can be applied to the loading section 2 of the main shaft 1 by placing the micro-concave roller for space coating of the present invention in the coating bath and driving the micro-concave roller to rotate.

Furthermore, the coating liquid is an acrylic resin solution, the solid content c of the coating liquid is 20-30%, and the viscosity d of the coating liquid is 100-400 cps.

In a preferred embodiment, the coating apparatus further comprises a scraper disposed at the top of the coating tank and adjacent to the micro-concave roller for interval coating for scraping off the excessive coating liquid at the smooth part 4 and the engraved part 3. Specifically, during the rotation of the micro-concave roller, the scraper can scrape off the coating liquid of the smooth part 4, and simultaneously scrape off the excessive coating liquid at the engraved part 3, and the coating liquid in the snake-shaped groove 31 of the engraved part 3 is remained for the coating operation of coating the substrate.

In a preferred embodiment, the coating apparatus further comprises a coating substrate disposed on top of the spaced coating micro-concave roller and in contact with the spaced coating micro-concave roller; the coating base material and the spindle 1 are arranged in parallel, and the rotation direction of the spindle 1 is opposite to the movement direction of the coating base material. In the scheme of this embodiment, the coating substrate contacts with the top of the slightly concave roller for interval coating of the utility model, and the moving direction of the coating substrate is opposite to the rotating direction of the slightly concave roller, and in the process of the relative movement of the two, the coating liquid on the slightly concave roller is transferred to the substrate, thereby forming the interval strip-shaped adhesive tape on the coating substrate.

To sum up, the utility model provides a little concave roller of interval coating usefulness, the sculpture portion 3 of its main shaft 1 adopts snakelike groove 31 design, and snakelike groove 31 extends the setting along main shaft 1's circumferential direction, it is also perpendicular with main shaft 1's central line that snakelike groove 31's extending direction is the same, through this structural design mode, can make snakelike groove 31 parallel with the direction of motion of coating substrate, make the coating liquid only receive the power of upper and lower direction, the effort of direction about not having, avoid the coating liquid toward piling up on one side, thereby show that to improve one side thick limit when separating the coating operation in the prior art, the another side coating weight is not enough and the uneven sagging phenomenon in edge appears. And the spacing size of the carving part 3 and the smooth part 4 of the micro-concave roller can be customized according to the specific size of the spacing adhesive tape, and the coated spacing adhesive film can be separated to complete the production process of the spacing adhesive tape, so that the structural design is simple and reasonable, and the operation is simple and convenient.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. The micro-concave roller for interval coating is characterized by comprising a main shaft, wherein a feeding part is arranged on the outer surface of the main shaft and comprises a carving part and a smooth part, the carving part and the smooth part are sequentially arranged in a staggered and interval manner, and the positions of two ends of the main shaft are respectively arranged as the smooth part;

2. The gravure roll for space coating of claim 1, wherein said serpentine grooves are formed by splicing a plurality of "S" shaped arcuate grooves end to end in the circumferential direction of said spindle.

3. The gravure roll for space coating according to claim 1, wherein the number of the serpentine grooves h is 40 to 200.

4. The gravure roll for space coating according to claim 1, wherein the distance between the engraved portion and the center line of the main shaft is a, and the distance between the smooth portion and the center line of the main shaft is b, and wherein b-a < 5 μm.

5. The gap-coating micro-gravure roll of claim 1 further comprising an assembly portion disposed at both ends of said main shaft for assembly with an external drive shaft through bearings.

6. A coating apparatus comprising the interval coating micro-gravure roll of any one of claims 1 to 5.

7. The coating apparatus according to claim 6, further comprising a coating tank in which the coating liquid is contained, the coating tank being configured to hold the micro-concave roller for space coating.

8. The coating apparatus as claimed in claim 7, wherein the coating liquid is an acrylic resin solution, the coating liquid has a solid content c of 20% to 30%, and the coating liquid has a viscosity d of 100cps to 400cps.

9. The coating apparatus as claimed in claim 7, further comprising a doctor blade disposed at the top of the coating bath and adjacent to the micro-gravure roll for space coating for scraping off excess coating liquid at the smooth portion and the engraved portion.

10. The coating apparatus of claim 7, further comprising a coating substrate disposed on top of and in contact with said spaced-apart coating micro-gravure roll; the coating base material and the main shaft are arranged in parallel, and the rotation direction of the main shaft is opposite to the movement direction of the coating base material.