CN216544899U

CN216544899U - Mechanical compression roller and release film exhaust structure forming equipment

Info

Publication number: CN216544899U
Application number: CN202123141471.9U
Authority: CN
Inventors: 李书锋; 李书瑜; 李书芒
Original assignee: Guangzhou Jinwanzheng Printing Material Co ltd; Jinwanzheng Guangdong New Material Co ltd
Current assignee: Guangzhou Jinwanzheng Printing Material Co ltd; Jinwanzheng Guangdong New Material Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-05-17
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses a mechanical compression roller, which comprises a rotating shaft, a roller, a fixing component and a bearing component, wherein the fixing component is used for fixing the roller on the rotating shaft; the roller comprises an inner cylinder and an outer cylinder, the inner cylinder is fixed on the rotating shaft, and the inner wall of the inner cylinder is provided with a cooling device; one end of the fixing component is welded on the rotating shaft, the other end of the fixing component is welded on the inner wall of the outer barrel, and an embossing structure is arranged on the outer surface of the outer barrel. The utility model also discloses a forming device of the release film exhaust structure. The utility model is used for forming effective air exhaust grooves on the release film by improving the structure of the compression roller, thereby solving the air exhaust problem of the pressure-sensitive adhesive product copied by the release film.

Description

Mechanical compression roller and release film exhaust structure forming equipment

Technical Field

The utility model relates to the field of release film processing machinery, in particular to a mechanical compression roller and manufacturing equipment of a release film with an exhaust structure.

Background

The release paper or release film is formed by coating one side or two sides of an organic silicon release agent on the surface of paper or a polymer film, and is also called as silicone oil paper or film. Release paper or film is generally used for isolating viscous materials, and is widely applied to the fields of packaging, printing, flexible circuit boards, insulating materials, laminating, electronics, adhesive products, die cutting and punching processing and the like. The release paper or film can show stable release force to various organic pressure-sensitive adhesives (such as hot melt adhesive, acrylic adhesive and rubber-based pressure-sensitive adhesive). The adhesive surface of the release paper or film of the traditional pressure-sensitive adhesive tape/label is smooth and flat, when the pressure-sensitive adhesive tape or label is adhered to a target object, if the temperature of the target object changes or the area of a mucous membrane is large, the pressure-sensitive adhesive tape or label is easy to foam and bulge on the surface of the adhered object in the adhering process, so that the use performance and the attractiveness of the adhered object are influenced; the foaming of the pressure sensitive adhesive tape or label is more serious if the object to be adhered is an object which often generates heat, such as a mobile phone, a storage battery, a display, a laptop computer, an automobile cover, an automobile color-changing film, and the like.

In the pressure-sensitive adhesive industry, in order to solve the problems of air exhaust and foaming of a release film, the release film with embossing is adopted in the industry, the film printed with lines is generally used for transferring the film with embossing to the release film at present, the lines formed by film transfer are very thin, and the lines formed on the release film during transfer are not obvious due to the small thickness of the film, or even if the lines are formed, the lines easily disappear along with the lines in the later-stage thermosetting process of the pressure-sensitive adhesive, and the problem of air exhaust of a surface material combined with the release film cannot be well solved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a mechanical press roller, which is used for forming effective air exhaust grooves on a release film through improving the structure of the press roller, so that the air exhaust problem of a pressure-sensitive adhesive product copied by the release film is solved.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a mechanical compression roller comprises a rotating shaft, a roller, a fixing assembly and a bearing assembly, wherein the fixing assembly is used for fixing the roller on the rotating shaft; the roller comprises an inner cylinder and an outer cylinder, the inner cylinder is fixed on the rotating shaft, and the inner wall of the inner cylinder is provided with a cooling device; one end of the fixing component is welded on the rotating shaft, the other end of the fixing component is welded on the inner wall of the outer barrel, and an embossing structure is arranged on the outer surface of the outer barrel.

As a further preferable scheme, the embossing structure provided by the utility model is a plurality of strip-shaped protrusions engraved on the outer surface of the outer cylinder, and the strip-shaped protrusions are mutually staggered to divide the surface of the outer cylinder into a plurality of concave grains.

As a further preferable mode, the height of the projections of the present invention is 2 to 25 μm.

As a further preferable mode, the cross section of the protrusion in the height direction of the present invention is one of a trapezoid, a square, a triangle or a semicircle.

As a further preferable scheme, the cooling device of the present invention includes a plurality of mutually parallel flow channels arranged in the axial direction of the inner wall of the inner cylinder, and the flow channels are arranged equidistantly along the radial direction of the inner cylinder.

The utility model also provides a forming device of the release film exhaust structure, which comprises a rack, a film feeding mechanism, a curing device and a film discharging mechanism which are fixed on the rack, and an exhaust structure imprinting device, wherein the exhaust structure imprinting device comprises the mechanical press roll and a first servo motor for providing power for the mechanical press roll; the exhaust structure stamping device is fixed on the rack, and the curing device is fixed on the rack adjacent to the exhaust structure.

In a further preferred embodiment, the curing device of the present invention is an electron radiation curing device or a UV light curing device.

As a further preferable scheme, the film feeding mechanism comprises a film feeding roller group and a second servo motor for providing power for the film feeding roller group.

As a further preferable scheme, the film discharging mechanism comprises a film discharging roller group and a third servo motor for providing power for the film discharging roller group.

1. The mechanical press roller comprises the imprinting structure, the imprinting structure can form an exhaust structure on a curing coating of the release film in the preparation process of the release film, and the exhaust structure formed in a mechanical contact mode is clear in texture and good in stability.

2. The mechanical compression roller comprises a cooling device, and the cooling device takes away heat when the rotating shaft works to play a cooling role.

3. The mechanical press roller is used in the release film exhaust structure forming equipment, and realizes automatic forming of the release film exhaust structure through the cooperation with other parts.

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

Drawings

FIG. 1 is a schematic structural view of a mechanical press roll according to the present invention;

FIG. 2 is a schematic structural view of an embossed structure according to the present invention;

fig. 3 is a schematic structural view of a release film venting structure forming apparatus according to the present invention.

Wherein, each reference numeral is: 1. a frame; 10. a mechanical press roll; 11. a rotating shaft; 12. a roller; 121. an inner cylinder; 122. an outer cylinder; 13. a fixing assembly; 14. a bearing assembly; 15. embossing the structure; 151. a strip-shaped bulge; 152. grid lines; 2. a film feeding mechanism; 3. a curing device; 4. a film discharging mechanism; 5. exhaust structure impression device.

Detailed Description

The terms and nouns referred to in the present invention are explained as follows:

the utility model relates to an 'impression structure' which is a structure for impressing lines on other materials and is equivalent to an impression mould in the implementation process.

As shown in fig. 1 and 2, the present invention provides a mechanical press roll 10, which includes a rotating shaft 11, a roll 12, a fixing assembly 13 for fixing the roll 12 on the rotating shaft 11, and a bearing assembly 14 disposed between the roll 12 and the rotating shaft 11; the roller 12 comprises an inner cylinder 121 and an outer cylinder 122, the inner cylinder 122 is fixed on the rotating shaft 11, and the inner wall of the inner cylinder 122 is provided with a cooling device; one end of the fixing component 13 is welded on the rotating shaft 11, the other end of the fixing component 13 is welded on the inner wall of the outer cylinder 121, and the outer surface of the outer cylinder 121 is provided with an embossing structure 15. The mechanical press roller is used for forming an exhaust structure on a cured coating of the release film in the preparation process of the release film, wherein the exhaust structure formed by the impression structure in a mechanical contact mode has clear texture; the cooling device can take away heat generated when the rotating shaft works, and the damage to the service life of the rotating shaft and the bearing caused by overheating is prevented.

In the first embodiment of the present invention, preferably, the embossing structure 15 of the present invention is a plurality of strip-shaped protrusions 151 punched on the outer surface of the outer cylinder, and the plurality of strip-shaped protrusions 151 are staggered to divide the outer surface of the outer cylinder into a plurality of concave corrugations 152. Preferably, the recessed corrugations are equally sized corrugations. The shape of the corrugations may be regular or irregular.

In addition, in the second embodiment of the present invention, the embossing structure may also be a plurality of tooth-like protrusions separated from each other and disposed on the surface of the outer cylinder, and the tooth-like protrusions are uniformly distributed on the surface of the outer cylinder.

In both the first and second embodiments, it is further preferable that the height of the protrusions of the present invention is 2 to 25 μm in order to improve the stability and effectiveness of the venting structure on the release film. In practice, the height of the protrusions is also related to the thickness of the cured coating on the release film, and when the protrusions form the venting structure on the cured coating, the maximum allowable height of the protrusions is actually the thickness of the cured coating.

On the basis of the two schemes, as a further preferable scheme, the cross section of the bulge in the height direction is one of trapezoid, square, triangle or semicircle. Wherein the embossing effect is best if the cross-section of the protrusions is trapezoidal or triangular.

The rotating shaft and the bearing of the mechanical press roll can generate a large amount of heat in the working process, and if the heat is not taken out in time, the service life of the rotating shaft and the service life of the bearing can be seriously influenced, so the mechanical press roll is provided with the cooling device. Preferably, the cooling device provided by the utility model comprises a plurality of parallel flow channels arranged in the axial direction of the inner wall of the inner cylinder, and the flow channels are arranged at equal intervals along the radial direction of the inner cylinder, so that the heat dissipation is more uniform. The length of the further flow passage is slightly less than the radial length of the inner cylinder or equal to the radial length of the inner cylinder.

The utility model also provides a forming device of the release film exhaust structure, which comprises a frame 1, a film feeding mechanism 2, a curing device 3, a film discharging mechanism 4 and an exhaust structure imprinting device 5, wherein the film feeding mechanism 2, the curing device 3 and the film discharging mechanism 4 are fixed on the frame 1; the exhaust structure stamping device 5 is fixed on the frame 1, and the curing device 3 is fixed on the frame 1 adjacent to the exhaust structure stamping device 5. The curing device is adjacent to the exhaust structure imprinting device and is used for curing the curing coating of the release film while imprinting.

In a further preferred embodiment, the curing device of the present invention is an electron radiation curing device or a UV light curing device. The electron radiation curing device is actually an Electron Beam (EB) curing device, which uses a high-energy electron beam generated by an electron accelerator as a radiation source to induce liquid oligomers to form a solid product rapidly through cross-linking polymerization. The UV light curing device adopts 200-400nm ultraviolet light as a curing light source.

As a further preferable scheme, the film feeding mechanism comprises a film feeding roller group and a second servo motor for providing power for the film feeding roller group. In order to allow the release film sufficient time to cure and form an effective stable venting structure at the mechanical press roll and curing device, the film feeding roll set typically includes a plurality of rolls, e.g., more than 2, to extend the film feeding time.

As a further preferable scheme, the film discharging mechanism comprises a film discharging roller group and a third servo motor for providing power for the film discharging roller group. In order to further enable the curing coating on the release film to be completely cured, and the exhaust structure is formed, the film outlet roller group can also be provided with a plurality of rollers, the release film after being discharged through the rollers can effectively ensure the stability of the exhaust structure in rolling, and the layers are not adhered to each other after rolling.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A mechanical compression roller comprises a rotating shaft, a roller, a fixing assembly and a bearing assembly, wherein the fixing assembly is used for fixing the roller on the rotating shaft; the roller is characterized by comprising an inner cylinder and an outer cylinder, wherein the inner cylinder is fixed on the rotating shaft, and the inner wall of the inner cylinder is provided with a cooling device; one end of the fixing component is welded on the rotating shaft, the other end of the fixing component is welded on the inner wall of the outer barrel, and an embossing structure is arranged on the outer surface of the outer barrel.

2. The mechanical press roll according to claim 1, wherein the embossing structure is a plurality of raised strips engraved on the outer surface of the outer cylinder, the plurality of raised strips being interlaced to divide the surface of the cylinder into a plurality of recessed corrugations.

3. The mechanical roller of claim 2, wherein the height of the protrusions is 2-25 microns.

4. The mechanical roller of claim 3, wherein the protuberances have one of a trapezoidal, square, triangular, or semi-circular cross-section in the height direction.

5. The mechanical press roll according to claim 3, wherein the cooling means comprises a plurality of parallel flow channels arranged in the axial direction of the inner wall of the inner cylinder, the flow channels being arranged equidistantly in the radial direction of the inner cylinder.

6. A release film exhaust structure forming device comprises a frame, a film feeding mechanism, a curing device and a film discharging mechanism which are fixed on the frame, and is characterized by further comprising an exhaust structure impressing device, wherein the exhaust structure impressing device comprises a mechanical press roller according to any one of claims 1 to 5 and a first servo motor for providing power for the mechanical press roller; the exhaust structure stamping device is fixed on the rack, and the curing device is fixed on the rack adjacent to the exhaust structure.

7. The release film venting structure forming apparatus according to claim 6, wherein the curing device is an electron radiation curing device or a UV light curing device.

8. The release film exhaust structure forming apparatus according to claim 6, wherein the film feeding mechanism comprises a film feeding roller set and a second servo motor for powering the film feeding roller set.

9. The release film exhaust structure forming device according to any one of claims 6 to 8, wherein the film discharging mechanism comprises a film discharging roller set and a third servo motor for providing power for the film discharging roller set.