KR20130043739A - Waterless offset printing presses capable of printing using silicone rubber layer equipped printing cylinder - Google Patents

Abstract

PURPOSE: A waterless offset printer capable of printing by using a printing cylinder in which a stoving plate with a silicon rubber layer is installed is provided to express little dots clearly one by one without ink smudging, thereby obtaining a printing quality of high concentration and high accuracy. CONSTITUTION: A waterless offset printer capable of printing by using a printing cylinder in which a stoving plate with a silicon rubber layer is installed comprises an offset printer housing unit, an ink supply unit, and a printing device. The offset printing housing unit is formed into a basic structure supporting and protecting an offset printing device(1). The ink supply unit, which is arranged in the upper part of the printing device, is reeled in a printing cylinder(310), thereby supplying ink to the fixed stoving plate. The printing device is interposed between a left frame(120) and a right frame(130), and both sides of the printing device are fixed to the left and right frames. The printing device is rotated by being engaged with a gear receiving power from a motor formed in the lateral lower part of the printing device, thereby printing.

Description

Technical Field [0001] The present invention relates to a waterless offset printing press capable of printing using a printing cylinder equipped with a bottom plate on which a silicone rubber layer is formed,

A silicone rubber layer capable of printing by using a printing cylinder equipped with a soft plate on which a silicone rubber layer is formed without using damping water and by connecting a water cooling device through a rotary joint to control an elevated temperature of the ink roller portion The present invention relates to a non-wet offset printing press capable of printing using a printing cylinder equipped with a formed bottom plate.

Before describing the present invention, an offset printing machine will be described.

Firstly, an offset printing machine is an indirect printing method in which an image of a plate is directly transferred to a rubber blind kit without transferring the image to a paper, and then printed on paper. The indirect printing method is designed by designing a pattern to be printed, outputting it as a film using a separate machine, After transferring the film to a strong base plate and applying the oxidizing agent that reacts rapidly to light, the film is placed on top of it, and then the light is exposed to the light to quickly corrode the exposed surface of the film. And a non-printing surface, which is a blank space outside the printing surface. The ink is transferred to the blanket through a baking operation, in which the unnecessary portion is removed by washing the unnecessary portion with a plate-dedicated developing device, And then printed.

However, in the conventional offset printing press, the amount of water supplied to the plate material to which the photosensitive liquid has been applied beforehand is continuously varied during the printing process in such a manner that the conventional offset printing press is divided into a hydrophilic portion and a lipophilic portion by using a repulsive force of water and oil on a flat surface, The printing quality is not stabilized, the ink spreads in the water and clear printing is not performed, the adjusting machine for supplying water stops, and the damping control is not smoothly performed. If the amount of the damping water is large, the ink flows, It is necessary to check the amount of the damping water through the regular water stick so that the amount of the dampening water can be properly adjusted and maintained.

In addition, when a large amount of organic solvent such as IPA (isopropyl alcohol) is used, fluctuation of supplied water can be minimized, but it is difficult to use because it is a regulated material. Waste liquid generated by mixing water, IPA, Special management by alkaline It is obligatory to collect it as industrial wastes, and there is a need to control the temperature of the ink roller portion which is rising due to operation and friction of the apparatus, the concentration of pH rising due to the operation and friction of the apparatus, There was a problem.

In order to solve the above problems, according to the present invention, printing is performed by using a printing cylinder equipped with a base plate on which a silicone rubber layer is formed without using a dampening device, whereby ink is not smudged, It is possible to reproduce high density and high precision print quality constantly from the beginning to the end of printing and to improve the productivity as compared with the conventional offset printing machine using damping water and to perform soft printing without being influenced by water, It is possible to reduce paper and ink which are wasted by defects to a minimum, and the generated water is used for water-cooled use, and it can be flowed to general sewage, so that it is environmentally friendly, and there is no need to adjust the amount of water or pH concentration, And to provide an offset printing machine capable of improving printing quality.

In order to accomplish the above object, the present invention provides an offset printing press capable of printing using a printing cylinder equipped with a base plate having a silicone rubber layer according to the present invention, as an alternative to a dampening device,

An offset printing housing formed as a basic skeleton for supporting and protecting the offset printing machine,

An ink supply unit which is located at the top of the printing apparatus and serves to supply ink to the platen plate wound on the printing cylinder;

And a printing apparatus configured to be fixed on both sides between the left frame and the right frame and rotated by engaging with the gear by a motor formed at the lower end of the side surface to print the object.

As described above, according to the present invention, printing is performed by using a printing cylinder equipped with a base plate on which a silicone rubber layer is formed without using a dampening device, whereby ink is not smudged and each small point of printing is reproduced clearly High-density and high-precision printing quality can be obtained constantly from the beginning to the end of printing, and 16% productivity can be improved as compared with the conventional offset printing machine using damping water, smooth printing is possible without being influenced by water, By minimizing the printing defects to 2% or less, it is possible to considerably reduce paper and ink wasted by defects, thereby reducing costs and reducing industrial wastes, and the generated water can be used for water-cooled applications, It is eco-friendly with water, and it does not need to adjust the amount of water or the pH concentration. There is a good effect can be environmentally friendly printing can improve printing quality.

FIG. 1 is a perspective view showing the overall components of a moisture-free offset printing machine capable of printing using a printing cylinder equipped with a base plate having a silicone rubber layer according to the present invention,
FIG. 2 is a perspective view showing components of the offset printing machine according to the present invention viewed from the back; FIG.
FIG. 3 is a perspective view showing components of the offset printing machine according to the present invention,
FIG. 4 is a perspective view illustrating components of the offset printer according to the present invention,
5 is a cross-sectional view showing the rotational direction of the ink supply unit and the components of the printing apparatus according to the present invention and the movement process of the printed matter;
6 is a perspective view showing a silicon rubber layer and a wire portion of a base plate according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing the overall components of a water-free offset press that can be printed using a printing cylinder equipped with a small plate formed with a silicon rubber layer according to the present invention, which is an offset printing housing 100 and an ink supply unit. 200, a printing apparatus 300.

First, an offset printing housing 100 according to the present invention will be described.

The offset printing housing 100 is formed as a basic skeleton for supporting and protecting the offset printing machine 1, the lower support frame 110 formed in a rectangular parallelepiped shape that supports the offset printing machine as a whole and is laid in a horizontal direction, and a lower end. The left frame 120 and the right frame 130 which support both of the ink supply unit 200 and the printing apparatus 300 are erected to face each other in a symmetrical shape upright on the left and right sides of the upper end of the support frame 110. Is formed.

The lower support frame 110 is provided with a paper feed roller mounting portion 111 symmetrical on both sides so that a paper feed roller 111-a for supplying an object to be printed on the front surface thereof is formed, and a natural discharge A discharge roller mounting portion 112 is formed which is symmetrical on both sides so that the discharge roller 112-a for assisting the discharge roller 112-a can be mounted.

Here, the feed roller mounting portion 111 is a device for guiding the object to be fed and discharged without being curled or folded without being curled or folded, so that the object 2 can be stretched, And the rubber blanket 320 and the tampon 330 are rotated so as to move the object 2 in the form of a rolled material. A feeding roller 111-a for rotating the feeding roller 111-a in accordance with the speed of the feeding roller 111-a for feeding an object to be fed, And a guide roller 111-b which is formed on both side surfaces of the guide roller 111 and rotates and can change its position according to the width of the object.

The discharge roller mounting portion 112 surrounds the pressure roller 330, which is rotated while the printing material is printed, and is prevented from being sucked to the lower end, and the two columns formed on the back surface of the offset printing device are symmetrical And a discharge roller 112-a for rotating and discharging the object to be printed which passes through the rubber blanket 320 and the tampon 330 is formed.

Since the object 2 to be used here is not directly printed on the plate but is printed on the rubber blanket 320, various kinds of paper can be used, and clear printing is also performed on a paper having many uneven irregularities

The left frame 120 is erected on the upper left side of the lower support frame and formed symmetrically with the right frame 130 to support the ink supply unit 200 and the printing apparatus 300 and rotated on the left side of the ink roller 222. Is connected to the end of the universal joint 121 is configured to stably support the shaft.

The right frame 130 is erected on the upper right side of the lower support frame and is formed symmetrically with the left frame 120 to support the ink supply unit 200 and the printing apparatus 300, and the water cooling apparatus 3 and the ink roller on the right side. The rotary joint 131 connecting the 222 and the motor driving unit 132 for transmitting power to the offset printer through the gear is configured.

Next, the ink supply apparatus 200 according to the present invention will be described.

The ink supply device 200 is disposed on the upper surface of the printing apparatus 300 and is disposed on the front surface of the printing cylinder 310 through the rotation of the three ink rollers, And includes an ink control unit 210, an ink roller unit 220, a rotary joint 230, and a universal joint 240.

The ink regulating unit 210 includes a plurality of cylinders arranged in a line in the horizontal direction at the upper end of the ink roller unit 212 to regulate the amount of ink to be supplied and supply the ink to the ink roller unit Pulling the cylinder increases the amount of ink supplied and controls the way in which the amount of ink supplied decreases as the cylinder is pushed in.

The ink roller unit 220 is formed by contacting the three rollers from the lower end of the ink control unit to the roller in contact with the upper end of the printing cylinder 310, the rollers contacting each other, starting with the ink roller 221 formed on the upper end The ink rotated in the opposite direction and sequentially injected to the ink roller 223 contacting the baking sheet is spread evenly in a predetermined amount so as to be evenly transmitted to the entire baking sheet 321 wound on the surface of the printing apparatus 320.

Here, the ink roller unit 220 comprises a tubular roller in the form of a pipe whose inside is hollow so that the cooling water of the water-cooling unit 3 can be supplied and discharged.

The rotary joint 230 is a water pipe on the right side of the pipe joint formed to supply and discharge from the fixed pipe to various mechanical device rotating parts without leaking any pressure fluid or fluid below atmospheric pressure at high speed or low speed rotation. Combining the apparatus 3 and the three rotary joints 230 having a structure bent at right angles to connect the ink roller unit 220 and the inner tube of the water cooling device 3 with the right frame therebetween. Play a role.

This is because when the gear 231 formed on the rotary joint is rotated through the plurality of gear meshes connected to the driving motor and the power is transmitted, the connected ink roller unit 220 is rotated along with the cooling water supplied from the water- So that the ink can be supplied to the inner tube of the ink roller and can be supplied and drained.

Here, the water-cooling device 3 is a device for supplying and discharging cooling water so that the surface temperature of the ink roller can be cooled by the heat generated by the operation of the device and the frictional heat generated by the rotation of the device. 220 so as to prevent the temperature of the rotating ink roller unit 220 from rising to a predetermined temperature or higher and maintain the temperature of the supplied ink at a constant level, When the temperature of the ink roller unit 220 rises above the set temperature by providing a temperature sensor, the cooling water is circulated in the water-cooling unit 3 to supply and discharge the cooling water to cool the internal heat, ) To stop unnecessary power loss.

In this case, the cooling water must have a proper viscosity so that the heat transfer is good, the fluid can flow smoothly within the operation temperature range of the apparatus, and the temperature is not high due to high specific heat.

In order to allow the ink roller unit 220 to rotate stably, the universal joint 240 is fixed without rotating the left shaft, and the right shaft is connected to the ink roller 222 and rotated so that the left portion of the roller is idle Thereby preventing friction from occurring and supporting the rotation so as to be stably rotated.

Next, the printing apparatus 300 according to the present invention will be described.

The printing apparatus 300 is configured to be fixed on both sides between the left frame 120 and the right frame 130. The printing apparatus 300 is engaged with gears that are transmitted power by a motor formed at the lower end of the right side frame of the right frame, So that the printing is performed. The printing cylinder 310, the rubber blanket 320, and the tampon 330 are formed.

5, the printing cylinder 310 is rotated in the clockwise direction and the rubber blanket 320 is rotated in the counterclockwise direction in the direction in which the moving direction of the printed matter is shifted from left to right, The tampon is rotated in the clockwise direction and the printed material passes between the rubber blanket 320 and the tampon 330 to be printed.

The printing cylinder 310 is positioned between the ink roller 223 formed at the lower end of the ink roller unit 210 and the rubber blanket 320 in contact with the upper and lower ends thereof. And is rotated to serve as a supporter of the sub-plate. The ink is uniformly transferred from the ink roller unit 210 to the ink line of the sub-plate 311 and the ink image is transferred to the rubber blanket 320 ).

The bottom plate 311 is a plate produced by outputting a film for printing. Since the plate is thin and has a thickness of about 0.2 mm as a material of aluminum, it is flexible and easy to pivot, so that it is wound on the surface of the cylindrical printing cylinder 310 It is designed to design a printed pattern, and it is output to a film using a separate machine. Then, the film is transferred to a plate having a strong resistance for printing, a film is placed on the plate, an oxidizing agent that reacts rapidly to light is applied, When light is exposed, the part exposed to light is rapidly corroded. If it is divided into a printing surface to be printed and a non-printing surface which is a blank space other than the printing surface, the unnecessary portion is cleaned by washing the unnecessary portion with a plate- .

In addition, the baking board 311 is made of a silicone rubber layer 311-a that repels the ink and is formed at a place where printing is not required, The image is formed on an image to be printed with ink and burnt with ink, so that the characters and images on the surface of the sheet are the same as the printed matter and the wrong part can be easily found.

The silicone rubber layer 311-a exhibits a property of repelling the ink, thereby preventing the non-linearized portion having no printed image from repelling the ink. Thus, the silicone rubber layer 311-a is formed as a non-linear portion of an offset printing machine It plays the same role as the structure in which ink is repelled by using dampening water.

Here, since the silicone rubber layer 311-a does not require a separate dampening device, it simplifies the apparatus of the offset printing machine, reduces the troublesome operation of controlling the amount of damping water which is fluidically changed, The waste liquid generated by using the solvent is not generated, and the post-treatment is easy.

In addition, since no dampness is used, ink is not smeared, and each small dot of a print is reproduced clearly, so that high-density, high-precision print quality can be obtained constantly from the beginning to the end of printing.

The rubber blanket 320 is formed in a cylindrical shape of a rubber material lying at a position where the rubber blanket 320 abuts between the printing cylinder 310 and the tampon 330. When the printing material is pressed and passed together with the tampon 330, And is conveyed without being slid, so as to be printed without spreading. By receiving the ink image adhered to the bottom plate 311 which is rotated in the counterclockwise direction opposite to the printing cylinder 310 and wound on the surface of the printing cylinder, As a mediator.

Here, the offset printing machine 1 uses a method of indirect printing so that the ink image transferred to the rubber blanket 320 through the baffle plate 311 is inverted from the originally intended printing form when viewed from the naked eye, When the image is transferred, a desired shape image is transferred. If the surface of the rubber blinker (320) is covered with foreign matter or the surface is uneven, a bad print is generated. Therefore, the surface is always cleaned and the surface is rough or uneven It can be printed on rough paper because it uses rubber blanket. It is possible to print a large amount of prints because the pressure is stronger than direct printing. .

The tampon (330) is formed at the lower end of the rubber blinker (320) and is rotated in a clockwise direction opposite to the rubber blinker (320) so as to move and press the object So that it can be stably moved.

Here, the color at the time of printing correction and the color after printing become different from each other depending on whether or not the ink penetrates deeply into the object in a stable manner even if the same film is used.

Hereinafter, a specific operation process of a moisture-free offset printing machine capable of printing using a printing cylinder equipped with a baking board having a silicone rubber layer according to the present invention will be described.

First, after determining the overall layout of the printed matter, such as the plate shape, typeface, size, photograph, and drawing, the film manuscript to be finally printed is prepared, then placed on a printing plate treated with chemicals, After roughing, a silicon rubber layer is adhered to the non-smoothened portion to prepare a sintered plate.

Next, the finished baking sheet is wound around the surface of the printing cylinder and fixed.

Next, the sheet is fed from the sheet feeding device formed on the front surface of the offset printing housing to the sheet feeding device and passes between the two guide rollers, and is pressed between the rubber blanket and the tampon so as to pass therethrough. So that the printed matter is mounted on the offset printing machine.

Next, the ink uniformly dispersed through the three ink rollers formed up to the roller contacting the printing cylinder in the ink injection portion is transferred to the baking board.

In this case, ink is not adhered to the silicon rubber layer in the baffle plate, and ink is buried only in the part of the wire to be printed as a result.

The cooling water is supplied to the inner tube of the ink roller through a rotary joint that operates the water-cooling device by sensing the heat of the ink roller elevated due to operation and friction of the apparatus with the temperature sensor and connecting the water- Adjust the temperature of the roller constantly.

Next, the ink buried in the caulked portion of the baking sheet is conveyed in the opposite shape to the rubber blanket for printing on the printed matter.

Next, the rubber blanket and the punch are rotated, and the fed material passed between them passes through and is printed in a desired shape.

Finally, the defective prints are selected through a supervisory process in which the ink output of the offset printing machine is erroneously mistaken, the color is erroneous, or whether a typo is mistyped.

1: Offset press 2:
100: offset print housing 200: ink supply unit
300: Printing device

Claims (6)

In the offset press,
The offset printing machine (1) is formed of a basic skeleton for supporting and protecting the offset printing machine (1), the offset printing housing (100),
An ink supply unit 200 positioned at an upper end of the printing apparatus 300 and supplying ink to the small plate 311 wound and fixed to the printing cylinder 310, and
It is formed to be fixed to both sides between the left frame 120 and the right frame 130, is rotated in engagement with the gear transmitted by the power formed by the motor formed on the lower side of the printing device 300 for printing the printed matter is included A water-free offset printing machine capable of printing using a printing cylinder equipped with a platelet with a silicon rubber layer, characterized in that the configuration.
The method of claim 1, wherein the offset printing housing 100
The lower support frame 110 is formed so as to support the offset printing machine 1 as a whole and is laid in a horizontal direction, and is erected to face in a symmetrical shape by being upright on the left and right sides of the upper end of the lower support frame 110. Between the ink supply unit 200 and the printing device 300, the left frame 120 and the right frame 130 are formed to form a print cylinder equipped with a silicon rubber layer formed platelet, characterized in that formed Water-free offset press that can be printed using.
The ink supply apparatus 200 of claim 1, wherein the ink supply apparatus 200
An ink regulating unit 210 composed of a plurality of cylinders and regulating an amount of ink to be supplied and supplying the ink to the ink roller unit as needed,
The rollers abutting against the rollers 221 formed on the top rotate in opposite directions, and the ink sequentially injected to the ink rollers 223 abutting on the platen is spread evenly in a predetermined amount to be wound on the surface of the printing apparatus 320. Ink roller unit 220 and evenly transmitted to the entire plate 321,
It consists of three rotary joints 230 having a structure in which the portion coupled with the water cooling device 3 is bent at right angles on the right side, and the inner roller of the ink roller unit 220 and the water cooling device 3 with the right frame therebetween. Rotary joint 230 to be connected,
The left shaft is fixed without being rotated so that the ink roller unit 220 can rotate stably and the right shaft is connected and rotated with the ink roller 222 to prevent the left portion of the roller from idling or friction, And a universal joint (240) for supporting the base plate so as to be rotatable with respect to the base plate.

The method of claim 1, wherein the printing apparatus 300
The sub-plate 311 is mounted on the surface to serve as a support band for the sub-plate, and is rotated to receive ink evenly spread from the ink roller unit 210 to bury the ink image on the wire part of the sub-plate 311. A printing cylinder 310 for transferring the ink image to the rubber blanket 320;
It is formed in the cylindrical shape of the rubber material lying in contact with each other between the printing cylinder 310 and the pressure cylinder 330 is rotated in the counterclockwise direction opposite to the printing plate and wound on the plate 311 wound on the surface of the printing cylinder A rubber blanket 320 serving as an intermediate medium for receiving a stained ink image and printing the printed object,
Silicon is formed on the bottom of the rubber bling (320) is rotated in the clockwise direction opposite to the rubber bling (320) and is composed of a tender 330 to press and move the substrate to be moved therebetween Non-water-based offset press that can print using a printing cylinder equipped with a plated plate with a rubber layer.
The rotary joint 230 of claim 3
It consists of three rotary joints 230 having a structure in which the portion coupled with the water cooling device 3 is bent at right angles on the right side, and the inner roller of the ink roller unit 220 and the water cooling device 3 with the right frame interposed therebetween. A non-water offset printing machine capable of printing using a printing cylinder equipped with a baking plate with a silicon rubber layer, characterized in that the cooling water is supplied to the inner tube of the ink roller unit 220 without leakage.
The sub plate 311 according to claim 4
Silicone rubber layer 311-a formed in a non-active line which does not need printing because it has a property of repelling ink, and ink is formed on an image to be printed with lipophilic property and prevents printing Water-free offset printing machine which can print using a printing cylinder equipped with a baking plate with a silicon rubber layer, characterized in that consisting of a wire portion (311-b) is buried to print.

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