KR20100093208A - Apparatus for printing embossed pattern - Google Patents

Abstract

PURPOSE: A print device for printing cubic designs is provided to improve the quality of the cubic designs, increase the durability of a roll, reduce the manufacturing printing costs, and reduce facility costs. CONSTITUTION: A print device for printing cubic designs comprises a printing roll(100), tension rolls(120a,120b,120c), and a cooling unit. The printing roll has a cylindrical shape and the outer surface in which multiple cubic designs(110) are engraved. The tension roll comprises a crawler-type tension band(122) contacted with a part of the outer surface of the printing roll. The tension roll contacts the printing roll and moves the tension band. The cooling unit is installed inside the printing roll.

Description

Printing device for three-dimensional pattern printing {APPARATUS FOR PRINTING EMBOSSED PATTERN}

The present invention relates to a printing apparatus for three-dimensional pattern printing, and more particularly, a three-dimensional improved to easily implement a variety of colors and three-dimensional effect at low cost without embossing to a variety of sheets, flooring, wallpaper, and textiles A printing apparatus for printing a pattern.

In general, a number of printing methods are known for printing techniques, including gravure, decal comania.

For example, the most representative of the printing method is a gravure method, which is, as shown in (a) of Figure 1, it is a rubber roll after the ink is applied to the printing roll 10 designed in a predetermined pattern Refers to a printing method in which the ink deposited on the printing roll 10 is directly transferred to the workpiece 14 passing through a portion engaged with (12).

The gravure method has the advantage of being able to produce a variety of colors, while the disadvantage is that only flat printing and can not produce a three-dimensional effect.

In particular, it is possible to print only on paper, PVC sheets, decor sheets, flooring, wallpaper, etc., and in the case of fibers, it is not possible. In addition, it is difficult to print powdery pigments having large particles, which is about 50 μm. There is a disadvantage that printing is possible only in the following sizes.

Therefore, this printing method can satisfy the needs of consumers who prefer a more advanced product and various choice of products due to the improvement of living standards due to boredom by the simple repeatability of the flat pattern and the boredom of the simple flat color. There was no.

Many efforts have been made to improve this problem, and as a part of this, a sol screen method is used in which a PVC sol is added to a screen roll instead of ink, and then a rubber blade is pushed into a printed pattern hole to print a three-dimensional pattern. Can be.

However, in the case of the sol screen method, the drying temperature is 170 ° C. or higher, much higher than the gravure ink, and the print speed is less than half that of the gravure printing.

As another method for producing a three-dimensional effect, there is a printing method using the embossing roll 20 illustrated in FIG. 1 (b), which is to be treated after forming a desired pattern, pattern, etc. on the embossing roll 20. It is a method of embossing the to-be-processed object 24 by passing water 24 between the embossing roll 20 and the rubber roll 22, and crimping | bonding.

However, in spite of the advantage that the embossing printing method can give a more luxurious feeling by giving a three-dimensional effect, there is a limit that it is monotonous because it cannot implement various colors like gravure printing, and the price is relatively expensive, and most of them are The embossed printing paper of the situation is dependent on imports, so there is a disadvantage that the cost of producing a printed material using such embossed printing paper.

In addition, there is a limit to the pattern that can be engraved on the embossing roll 20, due to the valleys of the embossed pattern surface, the printing ink is not uniformly applied, a phenomenon in which the sharpness of the produced printed material is significantly reduced.

Recently, research has been attempted to develop a technology capable of expressing various colors and obtaining a stereoscopic effect by combining the two methods to obtain only the advantages of the embossing method and the gravure method. If it does not dry, the problem of smearing, of course, can not express the three-dimensional effect, and when the ink is super-cooled, it was difficult to release the printing problem was encountered.

This is related to the relationship between the material of the roll itself and the degree of cooling, as well as the durability of the roll and the workability of the roll.

The present invention has been made in view of the above-mentioned problems in the prior art, and has been created to solve this problem, and by clearly setting the detailed correlation between each other in consideration of thickness and cooling, durability, workability, etc. It is possible to express colors and at the same time achieve a three-dimensional effect, and it is possible to print three-dimensional printing on textile materials that are difficult to print because it is not limited to the material of the printed material, which can satisfy various decorative needs of consumers as well as printing at low cost. The main problem is to provide a printing device for three-dimensional pattern printing to be able to.

The present invention is a means for achieving the above-mentioned problems, the printing roll having a hollow cylindrical shape inside, the outer surface of the plurality of three-dimensional pattern is engraved; A plurality of tension rolls having an endless track type tension band in close contact with a portion of an outer surface of the printing roll, and moving the tension band while being in self-rotation contact with the printing roll; It is provided in the printing roll, and provides a three-dimensional pattern printing apparatus characterized in that it comprises a cooling unit constituting a cooling water flow path by a diaphragm provided radially on the outer surface of the roll shaft.

In this case, the printing roll is formed of a nickel material, the cooling unit is also characterized in that it is installed to be detachable to the printing roll.

In addition, the roll thickness of the printing roll is also characterized by being limited to 0.4-7.5mm.

In addition, when the printing roll is formed of a nickel material, and the diameter of the printing roll is 165-287mm, the roll thickness of the printing roll is determined by dividing the diameter of the printing roll by the constant value 400-50. It also has its features.

In addition, when the printing roll is formed of iron, copper, and the diameter of the printing roll is 165-287mm, the roll thickness of the printing roll is determined by dividing the diameter of the printing roll by a constant value of 100-40 It also has its characteristics.

In this case, the roll thickness of the printing roll is characterized in that it is limited to 0.47-5.74mm when the printing roll is nickel material, 1.64-7.17mm when the iron or copper material.

And, at the top of the printing roll, a brush for removing foreign substances remaining in the three-dimensional pattern, a release agent sprayed to help release the cooled ink, a heater for increasing scraping properties of the ink injected into the three-dimensional pattern further It also has its features.

According to the present invention, the three-dimensional pattern can be printed freely and at the same time various colors can be realized, and the three-dimensional printed pattern can be realized on the fiber regardless of the material of the to-be-printed material, and the structure of the equipment is simple and the equipment cost is low. In addition, the manufacturing cost according to the printing is reduced, the durability of the roll is excellent, and the effect of enabling a higher quality three-dimensional pattern printing can be obtained.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

Figure 2 is an exemplary cross-sectional view of the printing apparatus according to the present invention, Figure 3 is an exemplary view showing a cooling structure of the printing apparatus according to the present invention, Figure 4 is a cross-sectional view showing another example of the printing apparatus according to the present invention, 5 is a sample photograph showing an example of a three-dimensional pattern printed by the printing apparatus of the present invention.

As shown in FIG. 2, the printing apparatus according to the present invention includes a printing roll 100 having a cylindrical shape, ie, a pipe shape, having an empty inside.

Then, the outer surface of the printing roll 100 is formed in the concave shape of the three-dimensional pattern 110, such as various patterns, patterns, patterns, letters, etc. to fit the shape of the three-dimensional pattern to be printed.

In addition, a plurality of tension rolls (120a, 120b, 120c) is installed below the printing roll 100 in close proximity to the printing roll 100, the tension roll (120a, 120b, 120c) in an endless track form The tension band 122 is wound up and installed.

In this case, the tension band 122 is in contact with a portion of the outer circumferential surface of the printing roll 100 and has a constant tension to allow the to-be-printed object 200 to be completely in contact with the outer circumferential surface of the printing roll 100.

That is, the to-be-printed object 200 is configured to move from one side to the other side via the print roll 100 based on the print roll 100, in which case the print object 200 is the print roll. It is moved between the 100 and the tension band 122, wherein the ink in the three-dimensional pattern 110 formed on the printing roll 100 on the printing surface of the to-be-printed object 200 is released while the three-dimensional printed pattern ( And to form 210.

For reference, "ink" used in the present invention is a term selected in the description of the printing field, and means "resin", more preferably "thermoplastic resin", not a general ink including volatile matter.

In addition, it is more preferable that the printed roll 200 is configured so that both ends thereof can be wound and unrolled on a reel of a roll shape, respectively, to increase the convenience of a printing operation.

In addition, a supply nozzle 130 for supplying ink is provided at an upper side of the printing roll 100, and a knife finely spaced apart from an outer surface of the printing roll 100 at an end of the supply nozzle 130. 132 is provided.

In this case, the knife 132 is a kind of scraper, which is more uniform by scraping the remaining ink injected into the three-dimensional pattern 110 of the ink supplied to the surface of the printing roll 100 through the supply nozzle 130. It is to be able to form a precise three-dimensional print pattern (210).

In addition, although not shown, the supply nozzle 130 is connected to the extruder and configured to receive ink for printing.

On the other hand, the inside of the printing roll 100 is provided with a cooling unit 300 as shown in FIG.

The cooling unit 300 includes a plurality of diaphragms 320 radially formed on the roll shaft 310 forming the rotation center of the printing roll 100, and the inside of the printing roll 100 formed by the diaphragms 320. It has a cooling water supply port 332 and the cooling water discharge port 334 for supplying and discharging the cooling water to the cooling water flow path and comprises a sealing plate 330 for sealing the open one side of the printing roll (100).

In this case, the diaphragm 320 is formed to protrude from the outer circumferential surface of the roll shaft 310 to contact the inner circumferential surface of the printing roll 100 to form a cooling water flow path, and zigzag in a radial direction of the printing roll 100. In order to form a cooling water flow path in the form is preferably staggered in the longitudinal direction of the roll shaft (310).

In addition, the sealing plate 330 is preferably fixed in a form that is bolted to the open end of the printing roll 100 under the sealing member (mainly O-ring) not shown to completely seal the open end. .

Accordingly, the cooling unit 300 is configured to be detachably replaceable, the cooling unit 300 when replacing the printing roll 100 in the state provided with the cooling unit 300 for each size of the printing roll 100 ) Can be freely removed and reused to reduce costs.

This is possible when the printing roll 100 according to the present invention is formed of a nickel material, as will be described later, and if the printing roll 100 is made of Fe, since it is rusted inside, it is necessary to insert rust preventive oil or completely fix the type. It can only be configured, and because of the internal foreign matter inevitably due to the processing of the slot corresponding to the diaphragm 320 on the inner circumferential surface of the printing roll 100 made of Fe material is very inconvenient, cumbersome and rapidly increasing the manufacturing cost In the end, the fixed type is the most reasonable, and this fixed type is not limited to the one-piece printing roll 100 and the cooling unit 300 is composed of one set (Set).

On the contrary, in the present invention, when the printing roll 100 is made of nickel material, since the rust does not rust at all and no foreign matter is generated inside, the internal origin of the printing roll 100 can be used as it is, and the detachable type of the cooling unit 300 can be used. It is possible and smooth and good for reuse.

Here, the material of the cooling unit 300 does not need to be specifically limited, but is most preferably formed of SUS (stainless steel), and also with the configuration of the cooling unit 300 and the material of the printing roll 100 and It is necessary to limit the thickness.

This has an inseparable relationship with the formation of the three-dimensional printed pattern 210 (see FIG. 2), and if this is not specified, as described in the related art, the present invention cannot form the three-dimensional printed pattern 210 desired.

To this end, in the present invention, the material and thickness of the printing roll 100 was set as follows through numerous experiments.

At this time, the printing roll 100 is thicker, the more durable, but the cooling efficiency is lowered because the printing speed is low, and has the following relationship with respect to the diameter, the material can be iron, copper, nickel.

However, when the iron and copper as the printing roll 100 material, as described above, the cooling unit 300 can not be detachably configured, it must be configured in one piece, in the case of nickel material, both removable and integral type. It is possible.

In other words, when the roll material is manufactured by nickel electroforming (electro casting, electroplating) method, the thickness can be extracted thinly. Therefore, the roll thickness is determined in consideration of productivity and durability between the roll diameter divided by 400 to 50 (constant). The most suitable thickness was obtained by dividing the roll diameter by 150 (constant) in consideration of the cooling efficiency.

When the printing roll 100 is formed of nickel, as described above, since the electroforming or electroplating method is used, the minimum thickness of the printing roll 100 may be manufactured up to 0.4 mm, and the maximum thickness may be It should not exceed 6mm, which is hardly cooled if it exceeds 6mm. In the case of the printing roll 100 made of nickel, it is possible to manufacture a thickness of at least 0.4mm to a maximum of 6mm.

Therefore, when manufacturing a printing roll 100 having a diameter of 165mm-287mm required in the field to which the present invention belongs, as described below, the range of making the minimum thickness and the maximum thickness is divided by the diameter 400-50 by a constant value. It is possible, the minimum thickness obtainable in accordance with the present invention when processing the printing roll 100 of 165mm-287mm diameter is 0.47mm, the maximum thickness is 5.74mm all the printing rolls that can be made within the above-mentioned diameter range All of what is desired in the present invention will be satisfied.

At this time, the thickness range having the most desirable cooling capacity among them was when the test result, divided by the constant value 150 within the diameter range as described above.

On the other hand, when manufacturing rolls made of iron and copper pipes, turning It is difficult to process the roll thickness below 1.5mm in the processing condition, Since the thickness should not exceed 7.5mm, the roll diameter is divided by 100 to 40, and the above conditions are satisfied when the roll is manufactured. It is preferable to set these values, and these values 100-40 or 80 are all constants, and the reason which limits a numerical value in this way is also the same as the reason in nickel mentioned above.

In this case, the value divided by 80 is most suitable in terms of cooling efficiency.

For example, if the roll diameter is 165 mm (520 mm) nickel material,

165mm / 400 = 0.47mm, 165mm / 150 = 1.1mm, 165mm / 50 = 3.3mm

That is, it is produced in a thickness of 0.47mm ~ 3.3mm, the optimum value of the roll thickness is 1.1mm.

 As another example, if you make a 165 mm diameter roll from an iron pipe,

165mm / 100 = 1.64mm, 165mm / 80 = 2.1mm, 165mm / 40 = 4.1mm

That is, it is produced between 1.64 mm and 4.1 mm, and the optimum value becomes 2.1 mm.

For reference, the roll thickness satisfying the present invention when processing the printing roll 100 by nickel, iron, copper material by the size of the printing roll 100 that is commonly used is as follows.

At this time, the roll circumference (circumference) of the printing roll 100 commonly used is 520 mm (diameter 165 mm), 640 mm (diameter 204 mm), and 900 mm (diameter 287 mm).

[Preferred roll thickness compared to roll diameter for nickel material]

(Roll perimeter: 520mm) 165mm / 400 = 0.47mm, 165mm / 150 = 1.1mm, 165mm / 50 = 3.3mm

(Roll perimeter: 640mm) 204mm / 400 = 0.51mm, 204mm / 150 = 1.36mm, 204mm / 50 = 4.08mm

(Roll perimeter: 900mm) 287mm / 400 = 0.72mm, 287mm / 150 = 1.91mm, 287mm / 50 = 5.74mm

[Preferable Roll Thickness to Roll Diameter for Iron and Copper Materials]

(Roll perimeter: 520mm) 165mm / 100 = 1.64mm, 165mm / 80 = 2.1mm, 165mm / 40 = 4.1mm

(Roll perimeter: 640mm) 204mm / 100 = 2.04mm, 204mm / 80 = 2.55mm, 204mm / 40 = 5.1mm

(Roll perimeter: 900mm) 287mm / 100 = 2.87mm, 287mm / 80 = 3.58mm, 287mm / 40 = 7.17mm

On the other hand, as illustrated in Figure 4, the brush 400 is further installed on the upper portion of the printing roll 100 to remove the fine foreign substances remaining on the three-dimensional pattern 110 reentrant on the surface of the printing roll 100 By washing it will be able to realize a three-dimensional pattern more sharp and excellent quality.

In addition, the release agent 500 may be further sprayed to improve the release property of the ink, and the heater 600 may be further installed to improve the scraping function.

Particularly, in the case of the heater 600, when the release agent 500 is used, the heater 600 is necessarily provided for drying the release agent 500, and further, the residue remaining after being injected into the three-dimensional pattern 110 is maintained by maintaining the fluidity of the ink. It should be installed where possible to ensure that the inks can be scraped off smoothly and removed.

The printing apparatus according to the present invention having such a configuration has the following working relationship.

When the printing roll 100 is driven by the drive source, the printing ink supplied from the extruder is dropped onto the surface of the printing roll 100 through the supply nozzle 130.

At the same time, cooling water is supplied to the cooling unit 300 provided inside the printing roll 100 to flow along the cooling flow path.

In addition, the ink dropped to the surface of the printing roll 100 is injected into the three-dimensional pattern 110 concave on the surface of the printing roll 100, the remaining ink is a knife 132 attached to the lower end of the supply nozzle 130 ) Is scratched and removed.

In addition, as the tension rolls 120a, 120b, and 120c engaged with the printing roll 100 are rotated, the tension band 122 is also rotated. At this time, the to-be-printed object 200 that is wound is tensioned with the printing roll 100. Through the space between the band 122 is entered in a state of being completely in contact with the outer surface of the printing roll 100.

When the printing roll 100 continues to rotate in such a state, the ink injected into the three-dimensional pattern 110 falls to a predetermined temperature while the high temperature at the time of extrusion is cooled by the cooling unit 300, and the state In the state to be pressed along with the to-be-printed object 200 will be completely fixed to the to-be-printed object 200 while moving along the tension band 122.

At this time, the cooling of the ink has a correlation with the thickness according to the material of the printing roll 100, as described above, so that it is accurately managed from the start point of printing to the end point passing completely through the tension band 122 to be printed. Maintaining a temperature that is most suitable for sticking to the 200 and a temperature that is suitable for release.

In this way, a three-dimensional printed pattern 210 as shown in FIG. 2 is formed on the printed surface of the to-be-printed 210 which has completely passed through the tension band 122, which is embossed like the photographic sample attached to FIG. You can complete a three-dimensional pattern that can produce a variety of colors and patterns without having to.

After that, the continuous rotation of the printing roll 100 is made, and each time the above-described process is repeated, a continuous three-dimensional pattern printing operation is performed.

Of course, the brushing operation using the brush 400, the release agent 500, the heating operation through the heater 600 may be performed together as needed to achieve more convenient and easy workability and productivity improvement.

1 is an exemplary conceptual view showing a printing method according to the prior art,

2 is an exemplary cross-sectional view of a printing apparatus according to the present invention;

3 is an exemplary view showing a cooling structure of a printing apparatus according to the present invention;

4 is a cross-sectional view showing another example of a printing apparatus according to the present invention;

Figure 5 is a sample photograph showing an example of a three-dimensional pattern printed by the printing apparatus of the present invention.

♧ description of the symbols for the main parts of the drawing ♧

100 .... printing roll 110 .... three-dimensional pattern

120a, b, c .... tension roll 122 .... tension band

130.Supply nozzle 132.Knife

200 ... prints 210 ... stereo print

300 .... Cooling unit 310 .... Roll shaft

320 .... plate 330 .... sealed

400 .... Brush 500 .... Release

600 ... heater

Claims (7)

A printing roll having a hollow cylindrical shape and a plurality of three-dimensional patterns concave on the outer surface thereof; A plurality of tension rolls having an endless track type tension band in close contact with a portion of an outer surface of the printing roll, and moving the tension band while being in self-rotation contact with the printing roll; And a cooling unit installed inside the printing roll and constituting a cooling water flow path by a diaphragm provided radially on an outer surface of the roll shaft. The method of claim 1, further comprising: The printing roll is formed of a nickel material, the cooling unit is a printing apparatus for a three-dimensional pattern printing, characterized in that installed to be detachable to the printing roll. The method of claim 1, further comprising: The printing device for a three-dimensional pattern printing, characterized in that the roll thickness of the printing roll is limited to 0.4-7.5mm. The method of claim 1, further comprising: When the printing roll is formed of a nickel material, the diameter of the printing roll is 165-287mm, the roll thickness of the printing roll is determined by dividing the diameter of the printing roll by a constant value 400-50 Printing device for three-dimensional pattern printing. The method of claim 1, further comprising: When the printing roll is formed of iron, copper, and the diameter of the printing roll is 165-287mm, the roll thickness of the printing roll is determined by dividing the diameter of the printing roll by a constant value of 100-40. Printing apparatus for three-dimensional pattern printing. The method of claim 1, further comprising: The roll thickness of the printing roll is a printing roll for the three-dimensional pattern printing device, characterized in that it is limited to 0.47-5.74mm in the case of nickel material, 1.64-7.17mm in the case of iron or copper material. The method of claim 1, further comprising: The upper part of the printing roll is provided with a brush for removing foreign substances remaining in the three-dimensional pattern, a release agent sprayed to help release the cooled ink, at least one or more heaters to increase the scraping properties of the ink injected into the three-dimensional pattern is installed. A printing device for three-dimensional pattern printing, characterized in that.

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