KR101823473B1 - Non dampening vibratorroller cooling system for Computerized forms rotary press - Google Patents

Non dampening vibratorroller cooling system for Computerized forms rotary press Download PDF

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Publication number
KR101823473B1
KR101823473B1 KR1020150163911A KR20150163911A KR101823473B1 KR 101823473 B1 KR101823473 B1 KR 101823473B1 KR 1020150163911 A KR1020150163911 A KR 1020150163911A KR 20150163911 A KR20150163911 A KR 20150163911A KR 101823473 B1 KR101823473 B1 KR 101823473B1
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South Korea
Prior art keywords
cooling water
cooling
supply
joint
ink
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KR1020150163911A
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Korean (ko)
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KR20170059678A (en
Inventor
조좌영
김영길
이충훈
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조좌영
김영길
이충훈
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Priority to KR1020150163911A priority Critical patent/KR101823473B1/en
Publication of KR20170059678A publication Critical patent/KR20170059678A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0476—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/15—Devices for moving vibrator-rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • F25B41/003—
    • F25B41/04—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

More particularly, the present invention relates to a vibrator roller cooling apparatus for a non-wet type printing machine of a computerized form rotary machine, in which a cooling induction groove (11a) is provided in a cylindrical cooling section (11) A vibrator roller 10; A joint part (20) provided with a rolling bearing (21); And a cooling water supply unit (30) for supplying cooling water (W), thereby improving the print quality during nonhumidifying printing.

Description

TECHNICAL FIELD [0001] The present invention relates to a non-dampening printing roller cooling apparatus for a non-dampening printing type printing press,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vibrator roller cooling device for non-wetting printing of a computerized foam rotary press, and more particularly to a vibrating roller cooling device for a non- The present invention relates to a vibrator roller cooling device for a wet type printing machine of a computerized form rotary machine which improves the printing quality in non-wetting printing.

In general, printing is roughly divided into offset printing, letterpress printing, and silk printing. The offset printing is also called flat printing, and the types thereof include sheet printing, web printing, and computerized form printing.

The offset printing uses a property of repelling water and oil. When the oil-based ink is applied to the front surface of the plate while making a lipophilic layer on the ink-corrugated ink layer and forming a hydrophilic layer on the non- Is a printing method using the principle that no ink is applied to the surface having a lipophilic property but ink is applied to a lipophilic surface.

However, the above-described damping-type printing method has a problem in that a large amount of water is required for printing and a harmful substance such as an organic solvent is discharged.

In order to solve these problems, a non-wetting printing method has been recently developed. The moisture-free offset printing method is an innovative printing method that does not require a dampening device in the printing process, and is also advantageous in that it can be used in a thermal CTP without any facility investment in existing printing machines .

In addition, the above-mentioned moisture-free printing uses a concave-type special plate material in which silicone rubber is coated on the surface of the non-irradiated portion in place of water repelling with ink. Therefore, unlike the conventional offset method, which is highly volatile due to the balance between ink and water, it is not necessary to adjust the balance during printing because no water is used, and the ink can be printed at a substantially constant density without fluctuation of balance between ink and water. Accordingly, the non-wetting printing method has an advantage in that no waste liquid is generated during the developing and printing process, and therefore, no processing cost is incurred.

In recent years, it has been developed that a non-damping printing machine incorporating a chiller or the like in a printing machine has been developed and temperature control technology has been developed, but a damping ink dedicated to the non-damping printing should be used.

However, when the non-wetting ink used in the non-wetting printing is printed at an excessively low temperature, defects such as poor coating performance, poor gloss and mottling are generated, and when the temperature is too high, the viscoelasticity of the ink is deteriorated, And thus the contamination of the non-forming part called toning has occurred.

Korean Unexamined Patent Publication No. 10-1463292 (Nov. 11, 2014) discloses a non-wet offset printing ink composition using a low VOC content binder and a method for manufacturing the ink composition.

The prior art comprises 10 to 25 parts by weight of pigment for the total ink composition; 20 to 40 parts by weight of a rosin-modified phenolic resin having an average molecular weight of 100,000 to 250,000; 20 to 40 parts by weight of a vegetable ester prepared by trans-esterification of soybean oil with n-octanol; Characterized in that it has a low VOC content of 3% or less, comprising 10 to 40 parts by weight of a drying or semi-drying oil.

Herein, the rosin-modified phenol resin is prepared by adding a phenol compound having a C4 to C12 alkyl group in rosin, para position, paraformaldehyde and a catalyst, and then raising the temperature to 110 to 130 DEG C to obtain a phenol compound and a paraform Reacting an aldehyde; Raising the temperature to 180 to 200 DEG C to react the rosin with the methylol group of the phenolic compound; Adding maleic anhydride to the rosin to amplify the ester reactor; And a step of increasing the molecular weight by esterification reaction by adding a polyhydric alcohol while raising the temperature of the reactor to 250 to 300 DEG C, wherein the moisture-free ink has a high viscoelasticity, a deviation in the printing temperature And a superior rheology with a high critical toning temperature of 34 to 36 ° C, thereby enabling environmentally friendly offset printing.

The non-wetting ink of the prior art has a higher viscoelasticity than the wetting ink, and has a low rate of change of viscoelasticity due to a temperature variation (generally 25 to 30 DEG C).

However, since the thickness of the vibrator roller is small in the case of the above-mentioned type of form printing rotary printing machine, the chiller which is a cooling device for wet-proof printing can not be installed, so that it is not applicable to wet-proof printing .

In the non-wetting printing of the above-mentioned computerized foam rotary press, the ink should be maintained at a low temperature (25 to 30 DEG C) constantly at the time of printing, but due to the heat generated in the vibrating roller which reciprocates right and left to evenly spread the ink, There is a problem that the suitability of the ink supplied from the lowering device is deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the related art as described above, and it is an object of the present invention to provide a cooling device for cooling a heat generated in a vibrator roller so that a moisture- And a vibrator roller cooling device for a moisture-free printing of a computerized form rotary machine capable of stably supplying printing ink.

According to another aspect of the present invention, there is provided a cooling apparatus for supplying cooling water to a plurality of vibrator rollers so that a moisture-free printing method is applied to a computerized foam rotary press, A vibrator roller having a cylindrical cooling part for reciprocating right and left in an axial direction during rotation so as to uniformly disperse the ink for the wet type printing method of the computer form rotary machine so that the cooling water is introduced into the inside and heat is exchanged; A joint part having a rolling bearing at one end thereof to be engaged with the vibrator roller; And a cooling water supply unit coupled to the joint unit and having a supply pump for supplying the cooling water,

The joint portion is provided with a supply passage having a cooling water supply pipe extending through the center so as to allow the cooling water supplied from the cooling water supply portion to flow into the cooling portion and extending inward of the cooling portion, Is provided.

The cooling water supply unit is provided with a control unit for controlling the rotation speed of the supply pump, a check valve for preventing the reverse flow of the cooling water, and a temperature sensor for measuring the temperature of the cooling water flowing into the water return passage.

And the cooling induction groove is formed in the inner periphery of the cooling part so that the heat exchange efficiency with the cooling water increases and the cooling water is circulated and supplied smoothly in a spiral shape.

And the outer periphery of the vibrator roller is provided with a heat insulating material thinly coated to protect the physical properties of the ink.

The vibrator roller cooling device for a wet type printing according to another embodiment of the present invention is a cooling device for supplying cooling water to a plurality of vibrator rollers so that the wet type printing method is applied in a computer form rotary machine, A vibrator roller having a cylindrical cooling part for reciprocating right and left in an axial direction during rotation so as to uniformly disperse the ink for the non-wetting printing method, A second joint portion having a supply joint coupled to the vibrator roller to supply the cooling water and a return joint to which the cooling water is returned at the other end corresponding to the supply joint; And a cooling water supply unit coupled to the joint unit and having a supply pump for supplying the cooling water,

The cooling water supply unit is provided with a control unit for controlling the rotation speed of the supply pump, a check valve for preventing the reverse flow of the cooling water, and a temperature sensor for measuring the temperature of the cooling water flowing into the water return joint.

And the cooling induction groove is formed in the inner periphery of the cooling part so that the heat exchange efficiency with the cooling water increases and the cooling water is circulated and supplied smoothly in a spiral shape.

And the outer periphery of the vibrator roller is provided with a heat insulating material thinly coated to protect the physical properties of the ink.

As described above, the vibrator roller cooling apparatus for moisture-free printing of the computerized form rotary machine according to the present invention has the following effects.

First, since the cooling unit is provided to cool and cool the inside of the vibrator roller, the physical properties of the ink for non-wetting printing are not changed, so that the printing quality of the computer form rolling machine, which requires precise printing quality,

Second, a joint part connected to the cooling part to stably maintain supply and recovery of cooling water, a cooling water supply part formed with a temperature sensor and a supply pump capable of controlling the supply amount of the cooling water according to temperature, The surface temperature of the roll can be stably maintained,

Third, since the cooling section has a plurality of cooling induction grooves for facilitating heat exchange with the cooling water and forming a circulation passage for the cooling water, the temperature of the vibratory roller for moisture-free printing of the computer form rotary machine is easily controlled,

Fourth, since the heat insulating material thinly coated on the outer circumference of the vibrator roller is provided, it is possible to prevent the heat generated by the rotation and the lateral movement from being transmitted to the ink for non-wetting printing, thereby improving the non- .

FIG. 1 is a view showing the characteristics of the ink composition for offset printing of the prior art,
2 is a view showing the operation of the vibrator roller of the rotary machine according to the prior art,
3 is a schematic diagram of a bib-roller cooling apparatus according to an embodiment of the present invention,
FIG. 4 is a schematic view of a bib roller cooling apparatus according to another embodiment of the present invention
5 is a view for explaining the action of a bibiler according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a vibrator roller cooling apparatus for a moisture-free printing of a computerized foam rotary press according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 2 to 4, a vibrator roller cooling apparatus for a moisture-free printing printing method according to an exemplary embodiment of the present invention includes a plurality of vibrator rollers for applying a moisture- (W), wherein the cooling water is reciprocated in the axial direction in the rotation direction so that the ink for the non-wetting printing method of the computer form rotary machine is uniformly dispersed, and the cooling water (W) A vibrator roller 10 provided with a cooling part 11; A joint part (20) having a rolling bearing (21) at one end to be engaged with the vibratory roller (10); And a cooling water supply unit 30 provided with a supply pump 31 coupled to the joint unit 20 to supply the cooling water W,

The joint portion 20 is provided with a supply passage 22 having a cooling water supply pipe 22a extending to the inside of the cooling portion 11 through the center so that the cooling water W supplied from the cooling water supply portion flows into the joint portion 20, , And a water return passage (23) through which the cooling water (W) is returned along the outer periphery of the cooling water supply pipe (22a).

Here, the number of the vibrator rollers 10 configured in accordance with the rotary motors may be variously applied, and generally, about 2 to 4 vibration rollers are generally applied.

The joint part 20 transmits rotational motion and provides a passage through which the cooling water W is supplied and returned. A spring S for absorbing an impact when moving left and right and a gasket G for preventing the cooling water W from penetrating into the rolling bearing 21 are further provided on one side of the joint portion 20.

The cooling water supply unit 30 includes a control unit 32 for controlling the rotation speed of the supply pump 31, a check valve 33 for preventing the reverse flow of the cooling water W, And a temperature sensor 34 for measuring the temperature of the cooling water W flowing into the cooling water W.

That is, the cooling water supply unit 30 does not supply the cooling water W constantly, but adjusts the supply amount of the cooling water W based on the temperature measured by the temperature sensor 34. At this time, the controller 32 uses the PI control method using proportional control and integral control.

In addition, a cooling induction groove 11a is formed in the inner periphery of the cooling portion 11 to increase the heat exchange efficiency with the cooling water W and protrude in a spiral shape so as to smoothly circulate and supply the cooling water W, The temperature of the vibratory roller 10 is quickly brought close to the target value. Here, the cooling guide groove 11a has a helical rotation direction according to the rotation direction of the vibrator roller 10.

On the other hand, in order to prevent the physical properties of the vibrator roller 10 from being changed by the cooling water W, a special paint (not shown) such as epoxy resin is coated on the inner circumference of the cooling part 11 do.

The outer periphery of the vibrator roller 10 is provided with a heat insulating material 12 which is thinly coated to protect the physical properties of the ink, thereby enhancing the quality of printing by protecting the physical properties of the ink sensitive to the temperature as much as possible.

As another embodiment of the present invention, as shown in FIG. 4, a cooling device for supplying cooling water (W) to a plurality of vibrator rollers so as to apply a moisture-free printing method in a computer form rotary machine, A vibrator roller 10 having a cylindrical cooling part 11 for reciprocating right and left in an axial direction during rotation so that ink for printing is uniformly dispersed and cooling water W flowing into the inside for heat exchange; A supply joint 25 coupled with the vibrator roller 10 to supply the cooling water W and a water return joint 26 in which the cooling water W is returned to the other end corresponding to the supply joint 25 A second joint portion 20A; And a cooling water supply unit 30 provided with a supply pump 31 coupled to the joint unit 20 to supply the cooling water W,

The cooling water supply unit 30 is provided with a control unit 32 for controlling the rotation speed of the supply pump 31, a check valve 33 for preventing the reverse flow of the cooling water W, A temperature sensor 34 for measuring the temperature of the cooling water W is provided.

The supply of the cooling water W and the return of the cooling water W are performed by the vibrator roller 10 (see FIG. 1), and the supply joint 25 of the second joint part 20A and the return joint 26 are the same as in the embodiment. Respectively.

A cooling induction groove 11a is formed in the inner periphery of the cooling part 11 so that the heat exchange efficiency with the cooling water W increases and the cooling water W protrudes in a spiral shape to facilitate circulation of the cooling water.

The outer periphery of the vibrator roller 10 is provided with a heat insulating material 12 thinly coated to protect the physical properties of the ink.

The operation of the vibrator roller cooling device for moisture-free printing of the computerized form rotary machine having the above-described configuration according to the present invention is as follows.

As shown in FIG. 5, the vibrator roller cooling apparatus for a wet type printing press of the present invention is provided so that the cooling water W is supplied and returned to the joint unit 20 from one direction at the same time, A cylindrical cooling portion 11 is formed inside the vibrator roller 10 so that physical properties are not changed.

The cooling unit 11 includes a plurality of cooling guide grooves 11a protruding in the axial direction to increase the heat exchange area, thereby increasing the thermal conductivity at the time of heat exchange with the cooling water W.

In addition, the cooling guide groove 11a induces the supply direction of the cooling water W in a state rotated in the direction of the water return passage 23.

On the other hand, the cooling water W is supplied from the cooling water supply unit 30 such that the cooling water W is supplied to the cooling unit 11 so that the temperature of the vibrator roller 10 is maintained at the tonering threshold temperature (the temperature at which the physical properties of the ink are changed) At this time, the appropriate temperature of the cooling water W is supplied to the water of 25 to 30 ° C or less to maintain the physical properties of the ink, thereby improving the print quality of the form foam rotary machine.

The cooling water supply unit 30 uses the temperature sensor 34 to check the temperature of the cooling water W to adjust the supply timing and supply amount of the cooling water W. The check valve 33 is connected to the supply passage 22 To prevent the cooling water (W) supplied thereto from flowing backward.

The heat insulating material 12 coated on the outer periphery of the vibrator roller 10 prevents the heat generated by the reciprocating motion of the vibrator roller 10 and the friction caused by the rotation from being directly and rapidly conducted to the ink Thereby improving the non-wetting print quality of the computer form rotary machine.

In another embodiment, the joint portion 20 is provided separately at both ends of the supply joint 25 and the return joint 26, so that supply and return of the cooling water W become more convenient.

In addition, only the connection relationship between the cooling water supply unit 30 and the joint unit 20 described above is different from each other, and the other basic principles are the same,

Wherein the joint portion 20 comprises a supply passage 22 provided with a cooling water supply pipe 22a and a water return passage 23 through which the cooling water W is returned and the cooling water supply portion 30 is provided with the supply joint 25 And the water return joint 26 are respectively coupled and operated in different directions.

As described above, the vibrator roller cooling device for moisture-free printing of the computerized form rotary machine according to the present invention is provided with the cooling part 11 inside the vibrator roller 10 which reciprocates right and left when the ink is uniformly dispersed, The cooling water W is supplied to the cooling unit 11 so that the temperature of the vibrator roller 10 is kept constant to improve the printing quality of the computer form rotary machine during non-wetting printing.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

Description of the Related Art
10: vibrator roller 11: cooling part
11a: cooling induction groove 12: insulation
20: joint part 21: rolling bearing
22: Supply passage 22a: Cooling water supply pipe
23: water passage 25: supply joint
26: return joint 20A: second joint portion
30: Cooling water supply part 31: Feed pump
32: control unit 33: check valve
34: Temperature sensor
G: Gasket R: Rubber roller S: Spring
W: Cooling water

Claims (7)

A cooling device for supplying cooling water (W) to a plurality of vibrator rollers so as to apply a moisture-free printing method in a computer form rotary machine,
A vibrator roller (11) having a cylindrical cooling part (11) for reciprocating right and left in an axial direction during rotation so as to uniformly distribute the ink for the wet type printing method of the computer form rotary machine, (10); A joint part (20) having a rolling bearing (21) at one end to be engaged with the vibratory roller (10); And a cooling water supply unit 30 provided with a supply pump 31 coupled to the joint unit 20 to supply the cooling water W,
The joint portion 20 is provided with a supply passage 22a having a cooling water supply pipe 22a extending to the inside of the cooling portion 11 through the center so that the cooling water W supplied from the cooling water supply portion 30 flows, A water return passage 23 through which the cooling water W is recirculated along the outer circumference of the cooling water supply pipe 22a and a spring S for absorbing an impact when moving left and right,
The cooling water supply unit 30 is provided with a control unit 32 for controlling the rotation speed of the supply pump 31, a check valve 33 for preventing the reverse flow of the cooling water W, A temperature sensor 34 for measuring the temperature of the cooling water W is provided,
A cooling induction groove 11a is formed in the inner circumference of the cooling portion 11 so that the heat exchange efficiency with the cooling water W increases and the cooling water W is helically circulated smoothly,
Characterized in that the outer periphery of the vibrator roller (10) is provided with a heat insulating material (12) thinly coated to protect the physical properties of the ink. delete delete delete A cooling device for supplying cooling water (W) to a plurality of vibrator rollers so as to apply a moisture-free printing method in a computer form rotary machine,
A vibration roller (not shown) having a cylindrical cooling part 11 for reciprocating right and left in an axial direction during rotation so that the ink for the wet type printing method of the computer form rotary machine is uniformly dispersed, 10); A supply joint 25 coupled with the vibrator roller 10 to supply the cooling water W and a water return joint 26 in which the cooling water W is returned to the other end corresponding to the supply joint 25 A second joint portion 20A; And a cooling water supply unit 30 having a supply pump 31 coupled to the second joint unit 20A to supply the cooling water W,
The cooling water supply unit 30 is provided with a control unit 32 for controlling the rotation speed of the supply pump 31, a check valve 33 for preventing the reverse flow of the cooling water W, A temperature sensor 34 for measuring the temperature of the cooling water W is provided,
A cooling induction groove 11a is formed in the inner circumference of the cooling portion 11 so that the heat exchange efficiency with the cooling water W increases and the cooling water W is helically circulated smoothly,
The outer periphery of the vibrator roller 10 is provided with a heat insulating material 12 thinly coated to protect the physical properties of the ink,
And a pair of springs (S) for absorbing shocks when moving left and right are provided on both sides of the second joint part (20A). delete delete
KR1020150163911A 2015-11-23 2015-11-23 Non dampening vibratorroller cooling system for Computerized forms rotary press KR101823473B1 (en)

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KR1020150163911A KR101823473B1 (en) 2015-11-23 2015-11-23 Non dampening vibratorroller cooling system for Computerized forms rotary press

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200058189A (en) * 2018-11-19 2020-05-27 주식회사 포스코 An apparatus for cooling a roll

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200058189A (en) * 2018-11-19 2020-05-27 주식회사 포스코 An apparatus for cooling a roll
KR102180704B1 (en) 2018-11-19 2020-11-20 주식회사 포스코 An apparatus for cooling a roll

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