CN111674149A

CN111674149A - Coating molding equipment

Info

Publication number: CN111674149A
Application number: CN202010656302.XA
Authority: CN
Inventors: 王冰; 罗万里; 曾晓杰; 贺志磐
Original assignee: Holotek Technology Co ltd; Zhongshan Youlu Zhide Digital Technology Co ltd
Current assignee: Holotek Technology Co ltd; Zhongshan Youlu Zhide Digital Technology Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2020-09-18

Abstract

The invention discloses coating and die pressing equipment which comprises an unreeling unit, a coating unit, a UV die pressing unit and a reeling unit, wherein the coating unit comprises a coating press roller, a coating back pressure roller, a coating anilox roller and a closed double-scraper device, the coating back pressure roller is abutted against the lower side of the coating press roller, the coating anilox roller is positioned on the upper side of the coating press roller and coats UV coating on the front surface of a film, and the closed double-scraper device is abutted against the side surface of the coating anilox roller and forms a closed space for supplying the UV coating. Coating the film through closed two scraper device cooperation coating reticulation roller for the front that scribbles UV coating on the film is up, thereby will unreel the unit, the coating unit, UV mould pressing unit and rolling unit set up to the mode of arranging along the straight line in proper order, and it is great to avoid traditional film mode of walking to lead to coating moulding equipment's high dimension, influences production operation, and the film distance of walking shorter moreover can reduce the deformation volume of film, ensures product quality's stability.

Description

Coating molding equipment

Technical Field

The invention relates to coating and molding equipment.

Background

The current molding press is to attach a metal nickel plate with a holographic image as a molding plate on the molding plate roller, pass the film on the molding plate after being coated by a gravure anilox roller, so as to imprint the holographic image on the film on the molding plate, and then cure the coating by a drying device, so as to prepare the film with the holographic image for packaging.

The conventional die press uses a conventional single blade gravure anilox roll for coating, and since the single blade gravure anilox roll needs to be partially immersed in a coating pan loaded with a coating material, that is, the lower surface of the film is coated with the coating material during coating, the coated film needs to be rolled up to turn the surface coated with the coating material over, and then the film is rolled down to a die press unit by a drying device, and the rolling mode can refer to patent application No. 20182176554.3 entitled UV die press. The whole height of the mould pressing equipment is high, the production operation is inconvenient, the path of the film is long, the film is easy to stretch and deform, the size of the holographic pattern is inaccurate, the single scraper mode is a non-closed structure, the coating is easily influenced by air, illumination and other external factors, and the coating is easily splashed under the high-speed condition.

In addition, the coated film generates a large amount of heat during the curing process, which further causes the film to stretch, thereby affecting the quality of the printed product.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a coating and molding device with small height dimension and short film running path, the deformation amount of a film processed by the coating and molding device is small, and the quality stability of coating and molding is ensured.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a coating and molding apparatus comprising: the coating unit comprises a coating press roll, a coating back pressure roll, a coating anilox roll and a closed double scraper device, the coating back pressure roll abuts against the lower side of the coating press roll, the coating anilox roll is located on the upper side of the coating press roll and coats UV coating on the front surface of the film, and the closed double scraper device abuts against the side surface of the coating anilox roll and forms a closed space for supplying the UV coating. The coating molding equipment of above structure utilizes closed two scraper device cooperations coating reticulation roller to coat the film, make the front that scribbles UV coating on the film up, thereby to unreel the unit, the coating unit, UV molding unit and rolling unit set up to the mode of arranging along the straight line order, it is great to avoid traditional high dimension that leads to coating molding equipment to walk the membrane mode, influence production operation, and the short deformation volume that walks the membrane distance and can reduce the film, ensure product quality's stability.

In some embodiments of the present invention, the UV molding unit includes a molding back-pressure roller, a molding pressure roller and a molding pressure roller, the molding pressure roller is located at a lower side of the molding pressure roller and is used for a film to pass between the molding pressure roller and the molding pressure roller, the molding back-pressure roller abuts against the molding pressure roller to press a front side of the film against a lower side of the molding pressure roller, one side of the molding pressure roller is provided with a first UV curing light source which irradiates towards a back side of the film, the film coated with the UV paint forms a desired image after passing through the molding pressure roller, and the pattern is cured by irradiating the back side of the film with the first UV curing light source during molding.

In order to avoid overheating of the molding plate roller, a first cooling water channel flowing through the molding plate roller is arranged on the molding plate roller.

Preferably, in order to further increase the film cooling rate and avoid the increase of film deformation caused by overheating, a first cooling roller for transporting and cooling the film is arranged behind the molding plate roller.

In order to ensure that the UV coating on the film can be completely cured to ensure the stability of the pattern, a second UV curing light source is arranged between the mould pressing plate roller and the unreeling unit and is positioned behind the first UV curing light source, and the second UV curing light source irradiates towards the front side of the film.

In some embodiments of the invention, a plurality of transmission rollers are arranged between the mold pressing roller and the unreeling unit, the second UV curing light source faces one of the transmission rollers, the front surface of the film transmitted by the transmission roller corresponding to the second UV curing light source faces outwards, and the transmission roller corresponding to the second UV curing light source is provided with a second cooling water channel flowing through the transmission roller, so that the transmission roller corresponding to the second UV curing light source is prevented from being overheated to soften the film.

Further preferably, a second cooling roller for transporting and cooling the film is further provided behind the transport roller corresponding to the second UV curing light source in order to further increase the rate of cooling the film.

In order to detect whether the length of the embossed pattern is acceptable, the coating and embossing apparatus further includes a tag tracking electric eye provided at one side of the UV embossing unit.

Wherein, closed two scraper devices include with the rectangular board of coating reticulation roller looks adaptation, upper end, lower extreme, left end, the right-hand member of the lateral surface of rectangular board correspond respectively and are provided with scraper, lower scraper, left seal block, right seal block, the blade edge of going up the scraper all inclines outwards and faces each other with the blade edge of lower scraper, go up the blade edge of scraper and the blade edge of lower scraper all with the side surface of coating reticulation roller is tangent, seted up into ink inlet and ink outlet on the rectangular board, enclose jointly between the outer terminal surface of rectangular board, last scraper, lower scraper, left seal block, right seal block and the coating reticulation roller closed space, closed space is used for holding UV coating and can avoid UV coating to expose in the air, furthest has ensured the stability of the temperature and the viscosity of UV coating.

Preferably, the upper scraper is detachably mounted on the upper side edge of the long strip plate through a first pressing strip, and the lower scraper is detachably mounted on the lower side edge of the long strip plate through a second pressing strip, so that the upper scraper and the lower scraper can be replaced conveniently.

Preferably, the ink inlet is formed in the middle of the inner end face of the long strip plate and communicated with the closed space, two ends of the inner end face of the long strip plate are respectively provided with the ink outlet, and the two ink outlets are connected with an external ink suction pump through pipelines, so that rapid circulation of the UV paint is facilitated.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic block diagram of one embodiment of the present invention;

FIG. 2 is a schematic structural view of the enclosed double doctor apparatus of FIG. 1;

FIG. 3 is an exploded schematic view of FIG. 2;

FIG. 4 is a schematic view of another perspective of FIG. 3;

fig. 5 is a schematic internal structure of a closed double blade unit in combination with a coating anilox roll.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

Referring to fig. 1, 2 and 5, a coating molding apparatus includes: the film coating device comprises an unwinding unit 1, a coating unit 20, a UV mould pressing unit 30 and a winding unit 4 which are sequentially arranged along a straight line, wherein the coating unit 20 comprises a coating pressing roller 21, a coating back pressure roller 22, a coating anilox roller 23 and a closed double-scraper device 24, the coating back pressure roller 22 abuts against the lower side of the coating pressing roller 21, the coating anilox roller 23 is positioned on the upper side of the coating pressing roller 21 and coats UV coating on the front surface of the film 100, and the closed double-scraper device 24 abuts against the side surface of the coating anilox roller 23 and forms a closed space for supplying the UV coating. The coating molding equipment of above structure utilizes closed two scraper device 24 cooperation coating reticulation roller 23 to coat film 100, make the front that scribbles UV coating on the film 100 up, thereby to unreel unit 1, coating unit 20, UV molding unit 30 and rolling unit 4 set up to the mode of arranging along the straight line order, it is great to avoid traditional film mode of walking to lead to the height size of coating molding equipment, influence production operation, and the film distance of walking for short can reduce the deformation volume of film 100, ensure product quality's stability.

Referring to fig. 1, in some embodiments of the present invention, the UV molding unit 30 includes a molding back-pressure roller 31, a molding pressure roller 32, and a molding plate roller 33, the molding pressure roller 32 is located at a lower side of the molding plate roller 33, and the film 100 passes between the molding pressure roller 32 and the molding plate roller 33, the molding back-pressure roller 31 abuts against the molding pressure roller 32 to press a front side of the film 100 against a lower side of the molding plate roller 33, one side of the molding plate roller 33 is provided with a first UV curing light source 5 that irradiates towards a back side of the film 100, the film 100 coated with the UV paint forms a desired image after passing through the molding plate roller 33, and the pattern is cured by irradiating the back side of the film 100 with the first UV curing light source 5 while molding, and compared with other curing methods, the UV light has characteristics of strong penetration and high curing efficiency.

In order to avoid overheating of the embossing roller 33, the embossing roller 33 is provided with a first cooling water channel flowing through the inside thereof.

Referring to fig. 1, it is further preferable that a first cooling roller 6 for transporting and cooling the film 100 is disposed behind the embossing plate roller 33 in order to further increase the cooling rate of the film 100 and avoid the increase of the deformation of the film 100 due to overheating.

Referring to fig. 1, in order to ensure that the UV paint on the film 100 can be completely cured to ensure the stability of the pattern, a second UV curing light source 7 is further disposed between the embossing plate roller 33 and the unwinding unit 1 and behind the first UV curing light source 5, and the second UV curing light source 7 irradiates towards the front side of the film 100.

In some embodiments of the present invention, a plurality of conveying rollers 8 are disposed between the embossing roller 33 and the unwinding unit 1, the second UV curing light source 7 faces one of the conveying rollers 8, the front surface of the film 100 conveyed by the conveying roller 8 corresponding to the second UV curing light source 7 faces outward, and the conveying roller 8 corresponding to the second UV curing light source 7 is provided with a second cooling water channel flowing through the inside thereof, so as to prevent the conveying roller 8 corresponding to the second UV curing light source 7 from being overheated to soften the film 100.

Further preferably, in order to further increase the cooling rate of the film 100, a second cooling roller 62 for transporting and cooling the film 100 is further provided behind the transport roller 8 corresponding to the second UV curing light source 7.

Referring to fig. 1, the coating and embossing apparatus further includes a tag eye 9 provided at one side of the UV embossing unit 30 in order to check whether the length of the embossed pattern is acceptable.

Referring to fig. 2 to 4, wherein the closed double blade unit 24 comprises a strip 241 adapted to the coating anilox roll 23, the upper end, the lower end, the left end and the right end of the outer side surface of the strip plate 241 are respectively and correspondingly provided with an upper scraper 242, a lower scraper 243, a left sealing block 244 and a right sealing block 245, the blade of the upper blade 242 and the blade of the lower blade 243 are both inclined outward and face each other, the blade of the upper blade 242 and the blade of the lower blade 243 are both tangent to the side surface of the coating anilox roller 23, the long strip plate 241 is provided with an ink inlet 2411 and an ink outlet 2412, the outer end surface of the long strip plate 241, the upper scraper 242, the lower scraper 243, the left sealing block 244, the right sealing block 245 and the coating anilox roller 23 jointly enclose the closed space, the closed space is used for containing the UV coating and can prevent the UV coating from being exposed in the air, so that the stability of the temperature and the viscosity of the UV coating is guaranteed to the maximum extent.

Preferably, the upper blade 242 is detachably mounted on the upper side of the strip 241 by a first bead 246, and the lower blade 243 is detachably mounted on the lower side of the strip 241 by a second bead 247, so as to facilitate replacement of the upper blade 242 and the lower blade 243.

Referring to fig. 4, preferably, the ink inlet 2411 is opened at the middle of the inner end surface of the long strip plate 241 and is communicated with the closed space, two ends of the inner end surface of the long strip plate 241 are respectively provided with the ink outlet 2412, and both the ink outlets 2412 are connected with an external ink suction pump through a pipeline, so as to facilitate rapid circulation of the UV paint.

The above examples are merely preferred embodiments of the present invention, and other embodiments of the present invention are possible, such as a reasonable combination of the technical solutions described in the examples. Those skilled in the art can make equivalent changes or substitutions without departing from the spirit of the present invention, and such equivalent changes or substitutions are included in the scope set forth in the claims of the present application.

Claims

1. A coating and molding apparatus, comprising:

the coating unit (20) comprises a coating pressing roller (21), a coating back-pressure roller (22), a coating anilox roller (23) and a closed double-scraper device (24), wherein the coating back-pressure roller (22) abuts against the lower side of the coating pressing roller (21), the coating anilox roller (23) is located on the upper side of the coating pressing roller (21) and coats UV coating on the front face of the thin film (100), and the closed double-scraper device (24) abuts against the side surface of the coating anilox roller (23) and forms a closed space for supplying the UV coating.

2. The coating embossing apparatus of claim 1 wherein the at least one coating embossing device is a single-sided tape

UV mould pressing unit (30) are including mould pressing back pressure roller (31), mould pressing compression roller (32) and mould pressing version roller (33), mould pressing compression roller (32) are located the downside of mould pressing version roller (33) and supply film (100) from mould pressing compression roller (32) with pass through between mould pressing version roller (33), mould pressing back pressure roller (31) support and lean on in order to be in the positive top pressure of film (100) on mould pressing compression roller (32) the downside of mould pressing version roller (33), one side of mould pressing version roller (33) is equipped with first UV solidification light source (5) towards the back irradiation of film (100).

3. The coating press apparatus of claim 2, wherein:

and a first cooling water channel flowing through the inside of the mould pressing plate roller (33) is arranged on the mould pressing plate roller.

4. The coating press according to claim 2 or 3, wherein:

and a first cooling roller (6) for transporting and cooling the film (100) is arranged behind the mould pressing plate roller (33).

5. The coating press apparatus of claim 2, wherein:

and a second UV curing light source (7) positioned behind the first UV curing light source (5) is further arranged between the mould pressing plate roller (33) and the unreeling unit (1), and the second UV curing light source (7) irradiates towards the front side of the film (100).

6. The coating press apparatus of claim 5, wherein:

the film laminating machine is characterized in that a plurality of transmission rollers (8) are arranged between the mould pressing roller (33) and the unreeling unit (1), the second UV curing light source (7) faces one of the transmission rollers (8), the front face of a film (100) conveyed by the transmission roller (8) corresponding to the second UV curing light source (7) faces outwards, and a second cooling water channel flowing through the second UV curing light source (7) is arranged on the transmission roller (8) corresponding to the second UV curing light source (7).

7. The coating press apparatus of claim 1, wherein:

the coating and molding equipment further comprises a tag tracking electric eye (9) arranged on one side of the UV molding unit (30).

8. The coating press apparatus of claim 1, wherein:

the closed double blade device (24) comprises a strip (241) adapted to the coating screen roller (23), the upper end, the lower end, the left end and the right end of the outer side surface of the long slat (241) are respectively and correspondingly provided with an upper scraper (242), a lower scraper (243), a left sealing block (244) and a right sealing block (245), the blade of the upper scraper (242) and the blade of the lower scraper (243) are inclined outwards and face each other, the blade of the upper blade (242) and the blade of the lower blade (243) are both tangent to the lateral surface of the coating anilox roller (23), the long slat (241) is provided with an ink inlet (2411) and an ink outlet (2412), the outer end face of the long strip plate (241), the upper scraper (242), the lower scraper (243), the left sealing block (244), the right sealing block (245) and the coating anilox roller (23) jointly enclose the closed space.

9. The coating press apparatus of claim 8, wherein:

the upper scraper (242) is detachably mounted on the upper side edge of the long strip plate (241) through a first batten (246), and the lower scraper (243) is detachably mounted on the lower side edge of the long strip plate (241) through a second batten (247).

10. The coating press apparatus of claim 8, wherein:

the ink inlet (2411) is formed in the middle of the inner end face of the long strip plate (241) and communicated with the closed space, the two ends of the inner end face of the long strip plate (241) are respectively provided with the ink outlet (2412), and the two ink outlets (2412) are connected with an external ink suction pump through pipelines.