KR20110129520A - Apparatus for exchanging gravure offset roller automatically - Google Patents

Abstract

PURPOSE: A device for automatically exchanging a gravure offset roller is provided to keep the line width of a printing pattern constant even if the number of printing increases, since a gravure offset roller is automatically replaced every given time interval. CONSTITUTION: A device for automatically exchanging a gravure offset roller comprises a conveyor belt(221), a drying chamber(240), a rotating arm(231), a rod, and a motor. The conveyor belt holds and transfers an offset roller. The drying chamber dries the offset roller which is placed and transferred on the conveyor belt. A first hook groove(231-1) and a second hook groove(231-2) are respectively formed on both ends of the rotating arm. The first hook groove grips the offset roller sack of an offset roller(110) on a gravure printer. The second hook groove grips the offset roller sack of the offset roller transferred through the conveyor belt.

Description

Gravure offset roller automatic changer {Apparatus for exchanging gravure offset roller automatically}

The present invention relates to an automatic gravure offset roller automatic exchange device, and more particularly, after a certain time has elapsed, the gravure offset roller is taken out from the printing machine and dried, and the dry gravure offset roller is automatically inserted into the printing machine again. The gravure offset roller is for an automatic exchange device.

In the case of semiconductor chips, the integration is very high, with the line width of several tens of nanometers, and the performance is also a member of a very high family. On the other hand, the display market is to implement a visible display device, so the density is very low as the pixel size is almost 100 microns or more.

In addition, Printed Electronics products, which are expected to emerge as new market products in the future, such as RFID tags, E-papers, and Solar-Cells, require large area patterning and precision that does not need to be very high. It is a patterning product of tens of microns.

However, in the case of these products, it is required to be patterned on a film, which is a flexible substrate, for mass production.

However, since it is difficult to satisfy these conditions through an exposure process, which is a production method of a conventional semiconductor or display product, a print production method is proposed as an alternative.

In the printing production method, a flexible substrate is supplied by a roll-to-roll web feeder or a batch type feeder, and a screen, gravure, flexo, pad, inkjet, etc. By using various printing equipment of the patterning device by superimposing the conductive material, semiconductive material, insulating material to each characteristic. Of course, each printing process has different characteristics of the ink used, and the resolution and thickness also vary.

Among them, the gravure offset printing technique is suitable for roll-to-roll in micro patterning technique. However, the gravure offset printing technique is a process in which an offset rubber roller (also called a blanket) picks up ink from plate making and transfers it to a substrate.

At this time, the offset rubber roller repeats the absorption and dissipation of the solvent contained in the ink as the printing is repeated. In general, since the amount absorbed is larger than the amount emitted, the properties of the offset rubber rollers continue to change, and the solvent content of the offset rubber rollers gradually increases, resulting in the end of the life of the offset rubber rollers.

By the way, when the content of the solvent increases in the offset rubber roller, it is possible to observe the increase in the printed line width in the final printed shape. It can be seen that as the number of prints increases, the line width continuously increases. In this case, the printing pattern becomes irregular, which is one of the important factors that lowers the reliability of gravure offset printing.

Therefore, in order to prevent this, a long rest period is given in the middle to remove the solvent on the offset rubber roller. In this case, since the productivity is lowered, there is a problem that the advantages of the roll-to-roll printing method are lost.

The present invention provides a gravure offset roller automatic exchange device for automatically replacing the gravure offset roller so that the line width of the print pattern is kept constant even if the number of prints is increased in order to solve the problem according to the prior art raised above. have.

In addition, another object of the present invention is to provide an automatic gravure offset roller changer that maintains reliability while increasing productivity during roll-to-roll printing.

One embodiment of the present invention provides an offset roller exchange apparatus for replacing the offset (off-set) roller at a predetermined time to achieve the above object. The offset roller exchange device includes: a conveyor belt for mounting and transporting an offset roller; A drying chamber for drying the offset roller which is seated on the conveyor belt and transported; Rotating arms each having a first hook groove for holding an offset roller bag of an offset roller mounted on a gravure printing machine and a second hook groove for holding an offset roller bag of an offset roller transferred through the conveyor belt; A rod having one end connected to a piston provided inside the cylinder and the other end connected to the rotating arm so as to operate the rotating arm back and forth; And a motor for rotating the rotating arm by rotating the cylinder to grip the offset roller mounted on the gravure printing machine and the offset roller conveyed through the conveyor belt to change positions after the front and rear operation of the rod.

In this case, the drying chamber may include a drying means for drying the offset roller.

Here, the drying means may be one of a blower, an ultraviolet (UV) lamp, a heater and an infrared lamp.

In this case, the drying chamber may further include a discharge port for discharging the solvent generated when the offset roller is dried.

At this time, the conveyor belt is provided with an offset roller fixing means for fixing the offset roller, the belt driving means for driving the conveyor belt is provided.

Another embodiment of the present invention provides an offset roller replacing apparatus for automatically replacing the offset roller every predetermined time when printing continuously. The offset roller exchange device includes: a conveyor belt for mounting and transporting an offset roller; A drying chamber for drying the offset roller which is seated on the conveyor belt and transported; A first hook groove for holding an offset roller bag of an offset roller mounted on a gravure printing machine among a plurality of roller sets including an offset roller and an offset roller bag for an offset roller conveyed through the conveyor belt. Rotating arms having second hook grooves formed at both ends thereof; A rail spaced apart from the offset roller mounted on the gravure printing machine at a predetermined distance to move the rotary arm in the reciprocating direction; A rod having one end connected to a piston provided inside the cylinder moving in the reciprocating direction with the rotary arm on the rail and the other end connected to the rotary arm to operate the rotary arm back and forth; After rotating the rod, the rotating arm is rotated by rotating the cylinder to grip the offset roller mounted on the gravure printing machine and the offset roller transferred through the conveyor belt. Motor; includes.

At this time, the plurality of roller set is characterized in that the configuration for more than two degrees printing.

According to the present invention, the line width of the print pattern is kept constant even if the number of prints is increased by automatically replacing the gravure offset roller every predetermined time.

Another effect of the present invention is that a drying chamber is provided and the gravure offset roller can be prevented from being deformed by chemicals such as solvent by drying the gravure offset roller in the drying chamber.

In addition, another effect of the present invention is that despite the increase in productivity, the printing pattern remains uniform, so that the reliability of gravure offset printing can be increased.

1 is a conceptual diagram conceptually showing a gravure offset printing configuration according to an embodiment of the present invention.
2 is a conceptual diagram of a gravure offset exchange apparatus for replacing the gravure offset roller according to an embodiment of the present invention.
3 is a perspective view of the offset autochanger of FIG. 2.
4 is a view illustrating a state in which a drying chamber is assembled in the perspective of the offset automatic exchange apparatus of FIG. 2.
5 is a cross-sectional view of the offset autochanger of FIG. 2.
6 is a view showing a state in which the rotary arm 231 is in contact with the gravure offset roller to replace the gravure offset roller according to an embodiment of the present invention.
7 is a perspective view showing a state of FIG. 6.
8 is a cross-sectional view showing the state of FIG.
9 is a perspective view showing a state in which the rotary arm 231 is moved in the front direction to replace the offset roller according to the conceptual diagram according to an embodiment of the present invention.
10 is a cross-sectional view showing the state of FIG.
FIG. 11 is a conceptual view of a gravure offset changer which replaces a plurality of gravure offset rollers while the rotating arm 231 moves on a rail as another embodiment of the present invention.

Hereinafter, a multilayer gravure offset roller according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram conceptually showing a gravure offset printing configuration according to an embodiment of the present invention. Referring to FIG. 1, for gravure offset printing, an ink container 140 containing ink, a gravure roller 100 picking up ink from the ink bottle 140, and a substrate receiving the ink picked up by the gravure roller 100 is received. An offset roller 110 to be transferred to 120, a pressurizing roller 130 to apply pressure to the offset roller 110, and the like.

Referring to the operation, when the gravure roller 100 rotates in the counterclockwise direction, the ink in the ink container 140 is picked up. Of course, an intaglio pattern (not shown) is regularly formed on the surface of the gravure roller 100 for this purpose. That is, when the gravure roller 100 is rotated in the counterclockwise direction while being locked in the ink bottle 140, the intaglio pattern (not shown) picks up the ink locked in the ink bottle 140.

At this time, since the gravure roller 100 continues to rotate, it passes through the doctor blade 150 configured on one side, and the ink picked up by the doctor blade 150 is transferred to the offset roller 110 only in an appropriate amount. Ink picked up by the offset roller 110 is printed on the substrate 120 by a pressure roller 130 that rotates in the opposite direction.

2 is a conceptual diagram of a gravure offset exchange apparatus for replacing the gravure offset roller according to an embodiment of the present invention. Referring to FIG. 2, a gravure roller 100, an offset roller 110, and a pressure roller 130 are mounted in a gravure printing machine (not shown), and an offset for replacing the offset roller 110 at a predetermined time. The roller exchange apparatus is comprised.

The offset roller exchange device dries the rotary arm 231 for holding and rotating the offset roller 110, the conveyor belt 221 for rotating the offset rollers 100a, 110b, 110c, and the like, and the offset roller 110. It is configured to include a drying chamber 240 or the like.

The first hook groove 231-1 and the second hook groove 231-2 are formed at both ends of the rotary arm 231, respectively. The first hook groove 231-1 grips the off-set roller 110 mounted on the gravure printing machine, and the second hook groove 231-2 is seated on the conveyor belt 221 and is transferred to the drying chamber. The offset roller 110 ′ dried at 240 is gripped.

Of course, these first hook grooves 231-1 and second hook grooves 231-2 have the same structure and are opposite in direction to each other.

Accordingly, while the rotating arm 231 rotates in the counterclockwise direction, the first hook groove 231-1 rotates the offset roller 110 mounted on the gravure printing machine, and the second hook groove 231-2 rotates the offset roller. 110 'may be gripped.

The conveyor belt 221 is rotated by the belt rotation drive unit 220, the belt rotation drive unit 220 is configured with a motor (not shown), a gear (not shown) rotated by the motor.

The drying chamber 240 serves to dry the offset rollers 110a, 110b, 110c and the like transferred by the conveyor belt 221. To this end, the drying chamber 240 is provided with drying means 242a and 242b. The drying means 242a, 242b may be made of any one of a blower, an ultraviolet (UV) lamp, a heater, and an infrared lamp.

That is, as shown in FIG. 1, the solvent material is contained in the ink delivered from the ink container 140. Thus, this solvent material is continuously buried on the surface of the offset roller 110, causing mechanical deformation or chemical abnormality of the offset roller 110.

Therefore, it is necessary to remove such solvent material from the offset rollers 110a, 110b, 110c, etc. conveyed by the conveyor belt 221. To this end, the drying means 242a and 242b generate wind to provide wind toward the offset rollers 110a, 110b, 110c, etc., or apply heat to the offset rollers 110a, 110b, 110c, etc. using a heater.

Of course, it is also possible to apply to the offset roller (110a, 110b, 110c, etc.) using an ultraviolet lamp and an infrared lamp.

The drying chamber 240 is additionally provided with an outlet 241. The discharge port 241 generates a solvent vapor in the ink when the offset rollers 110a, 110b, 110c, and the like are dried, and serves to discharge the solvent vapor.

In addition, the offset roller exchange apparatus is provided with a housing 222 surrounding the conveyor belt 221. The housing 222 may be a metal material, an alloy material, a plastic material, or the like.

As illustrated in FIG. 2, the conveyor belt 221 is illustrated in an elliptical shape for easy understanding of the present invention. However, the present invention is not limited thereto and may be configured as a circular conveyor belt.

3 is a perspective view of the offset autochanger of FIG. 2. 3 illustrates a state in which the drying chamber 240 is not provided. Referring to FIG. 3, a cylinder 230 is provided to rotate and / or back and forth the rotary arm 231. That is, one end of the rod 237 is connected to a piston (not shown) provided inside the cylinder 230, and the other end is connected to the rotary arm 231.

Of course, the motor 250 for rotating the entire cylinder 230 is provided. The cylinder 230 includes a rod 237, a guide plate 233 for guiding the rod 237 linearly reciprocating only in a predetermined direction, guide rods 234a and 234b, and a second reduction gear of the motor 250 ( 251 is provided with a first reduction gear 232 and the like to operate.

Accordingly, the rotary arm 231 is rotated by the motor 250 by the motor 250 after the forward and backward operation of the rod 237, so that the offset roller 110 and the conveyor mounted on the gravure printing machine (not shown). The offset rollers 110 'transported through the belt 221 are gripped to exchange positions.

Of course, the gravure printing machine is provided with a gravure roller 100, an offset roller 110 and a pressure roller 130 in which the intaglio pattern 101 is engraved, as described above with reference to FIG. 1.

Here, the offset roller 110 represents an offset roller mounted on a gravure printing machine (not shown) for easy understanding of the present invention, and the offset roller 110 'is mounted on the conveyor belt 221 to dry chamber (FIG. 2). The offset roller dried at 240).

4 is a view illustrating a state in which the drying chamber 240 is assembled in the exchange device perspective view of FIG. 2. Referring to FIG. 4, although the drying chamber 240 is illustrated as being provided at the bottom, the present invention is not limited thereto and may be provided at the right side or the left side.

Now, only the process of replacing the offset roller 110 mounted on the gravure printing machine and the offset roller 110 'transferred through the conveyor belt 221 will be described. 5 shows this.

5 is a cross-sectional view of the exchange device of FIG. 2. Offset rollers (110, 111 'to 110n) are formed with offset roller bags (111, 111' to 111n) at the front end to facilitate the holding of the rotary arm (231), and offset roll insertion at the rear end for easy mounting and detachment. Rods 112, 112 'and 112n are formed.

Of course, in order to fix the offset roller inserting rods 112, 112 'to 112n, offset roller fixing portions 113, 113' to 113n are formed in the gravure printing machine (not shown) and the offset roller replacing apparatus.

In FIG. 5 a conveyor belt shaft 500 is provided for the shaft of the conveyor belt 221.

6 to 10 are views showing a process of replacing the offset roller in order. That is, FIG. 6 is a view showing a state in which the rotary arm 231 is in contact with the gravure offset roller to replace the gravure offset roller according to an embodiment of the present invention.

Referring to FIG. 6, the rotary arm 231 rotates in a counterclockwise direction to hold an offset roller 110 mounted on a gravure printing machine at the upper side thereof, and is transferred through the conveyor belt 221 at the lower side thereof. The offset roller 110 'is gripped.

7 is a diagram illustrating this in perspective view. Referring to FIG. 7, when the cylinder 230 is rotated, the rotary arm 231 connected to the rod 237 of the cylinder 230 rotates counterclockwise to grip the offset rollers 110 ′ and 110. do.

6 to 7 are shown in cross-sectional view as shown in FIG. Referring to FIG. 8, the first hook groove 231-1 of the rotary arm 231 grips the offset roller bag 111 of the offset roller 110 mounted on the gravure printing machine, and the rotary arm The second hook groove 231-2 of 231 grips the offset roller bag 111 ′ of the offset roller 110 ′ transferred through the conveyor belt 221.

In other words, when the motor 250 rotates in the clockwise direction, the rotation arm 231 also rotates by rotating the cylinder 230 counterclockwise by the reduction gears 232 and 251. Thus, the rotary arm 231 naturally grasps the offset rollers 110, 110 ′.

9 is a perspective view showing a state in which the rotary arm 231 is moved in the front direction to replace the offset roller according to the conceptual diagram according to an embodiment of the present invention. That is, in the state of FIG. 8, the rod 237 comes out of the front direction by the cylinder 233.

At this time, the rotation arm 231 is rotated in the counterclockwise direction, so that the positions of the offset roller 110 mounted on the gravure printing machine and the offset roller 110 'transferred through the conveyor belt 221 They are interchangeable.

In other words, the offset roller 110 mounted on the gravure printing machine at the upper side moves to the position of the offset roller 110 'transferred through the conveyor belt 221, and the conveyor belt 221 at the lower side. The offset roller 110 ′ transferred through) moves to the position of the offset roller 110 mounted on the gravure printing machine.

10 is shown in FIG. 10 to make this easier to understand. Referring to FIG. 10, first, the rotation arm 231 moves in a straight line direction as shown by the linear motion indicator arrow 1010, and the moved rotation arm 231 rotates clockwise as in the rotation motion indicator arrow 1020. . Of course, the figure shows a state that rotates in a clockwise direction for easy understanding, it is also possible to rotate in a counterclockwise direction.

10, the position of the offset roller 110 mounted on the gravure printing machine and the offset roller 110 'transported through the conveyor belt 221 is changed by the cylinder 230 The rotary arm 231 moves in the direction opposite to the linear movement indicator arrow 1010.

In this case, the offset roller 110 mounted on the gravure printing machine is inserted into the offset roller fixing part 113 ', and the offset roller 110' transferred through the conveyor belt 221 is the offset roller fixing part 113. Is inserted into the mounting.

Of course, in this case, the rotary arm 231 is rotated clockwise to return the rotary arm 231 to the position shown in FIGS. Accordingly, the offset roller bags 111 and 111 'are separated from the first hook grooves and the second hook grooves 231-1 and 231-2, so that the offset roller 110 and the conveyor belt 221 mounted on the gravure printing machine are removed. Replacement between the offset rollers 110 'transferred through is completed.

Then, since the conveyor belt 221 rotates, the replaced offset roller 110 proceeds to the drying chamber (240 in FIG. 2) and dried.

FIG. 11 is a conceptual view of a gravure offset changer which replaces a plurality of gravure offset rollers while the rotating arm 231 moves on a rail as another embodiment of the present invention.

Referring to FIG. 11, the offset exchange apparatus illustrated in FIG. 11 is similar to the structure of the offset exchange apparatus illustrated in FIGS. 2 to 10. However, FIG. 11 has a difference in that a rail 1130 structure is further provided because a plurality of offset rollers need to be replaced in the case of a printing machine capable of printing more than 2 degrees or a plurality of printings.

That is, FIG. 11 includes a plurality of roller sets 1110, 1111, and 1112 including offset rollers 110, 110-1, and 100-2. In other words, the first roller set 1120 is for printing 1 degree, the second roller set 1111 is for printing 2 degrees, and the third roller set 1112 is for 3 printing.

Of course, the gravure rollers 100, 100-1, 100-2, and offset rollers 110, 110-1, 110 also apply to the first roller set 1110, the second roller set 1111, and the third roller set 1112, respectively. -2) and impression rollers 130, 130-1 and 130-2.

Thus, the rotary arm 231 moves from side to side on the rail 1130 to select the corresponding offset rollers 110, 110-1, 110-2. Of course, a moving means is provided to allow the rotation arm 231 to move in the left and right arrow directions 1210. As this moving means, a conveyor belt or the like can be used.

Although the preferred embodiments of the present invention have been described above, the scope of the present invention is not limited only to such specific embodiments, and those skilled in the art may describe the present invention in the detailed description, claims, and drawings. Changes may be made as appropriate within the scope.

100: gravure roller 101: intaglio pattern
110, 110 ', 110a to 110n: offset roller
111, 111 'to 111n: offset roller bag
112, 112 'to 112n: offset roller inserting rod
113, 113 'to 113n: offset roller fixing part
120: substrate 130: pressure roller
140: ink container 150: doctor blade
220: belt rotation drive unit
221: conveyor belt 222: housing
228 to 228n: offset roller fixing part
230: cylinder 231: rotating arm
231-1: first hook groove 231-2: second hook groove
232: first reduction gear 233: guide plate
234a, 234b: guide rod 240: drying chamber
241: outlet 250: motor
251: second reduction gear
242a, 242b: drying means
500: conveyor belt shaft
1010: linear movement indicator arrow 1020: rotation movement indicator arrow
1110: first roller set 1111: second roller set
1112: third roller set 1130: rail

Claims (9)

A conveyor belt 221 for seating and transporting an offset roller 110 ';
A drying chamber 240 for drying the offset roller 110 ′ which is seated on the conveyor belt 221 and transferred;
A first hook groove 231-1 holding the offset roller bag 111 of an offset roller 110 mounted on a gravure printing machine and an offset roller 110 ′ transferred through the conveyor belt 221. A rotary arm 231 having second hook grooves 231-2 holding the offset roller bag 111 'of each of the two ends thereof;
A rod 237 having one end connected to a piston provided inside the cylinder 230 and the other end connected to the rotating arm 231 to operate the rotating arm 231 back and forth;
After the back and forth operation of the rod 237, the offset roller 110 mounted on the gravure printing machine and the offset roller 110 'transferred through the conveyor belt 221 are gripped to exchange positions with each other. A motor 250 for rotating the rotary arm 231 by rotating 230;
Gravure offset roller automatic exchange device comprising a. The method of claim 1,
The drying chamber 240 includes drying means 242a and 242b for drying the offset roller 110,
And the drying means (242a, 242b) is one of a blower, an ultraviolet (UV) lamp, a heater and an infrared lamp. The method according to claim 1 or 2,
The drying chamber 240 is a gravure offset roller automatic exchange apparatus further comprises a discharge port for discharging the solvent generated during the drying of the offset roller (110) (241). The method according to claim 1 or 2,
The conveyor belt 221 is provided with an offset roller fixing means 113 for fixing the offset roller 110, a gravure offset roller is provided with a belt drive means 220 for driving the conveyor belt 221. Automatic exchange device. A conveyor belt 221 for seating and transporting the offset roller 110 ';
A drying chamber 240 for drying the offset roller 110 ′ which is seated on the conveyor belt 221 and transferred;
Offset roller bag 111 of offset roller 110 mounted on a gravure printing machine among a plurality of roller sets 1110, 1111, and 1112 including offset rollers 110, 110-1, and 100-2. The first hook groove (231-1) for holding the second hook groove (231-2) for holding the offset roller bag 111 'of the offset roller (110') transferred through the conveyor belt 221 is Rotary arms 231 formed at both ends;
A rail (1130) spaced apart from the offset roller (110) mounted on the gravure printing machine at predetermined intervals and moving the rotary arm (231) in the reciprocating direction;
One end is connected to a piston provided inside the cylinder 230 moving in the reciprocating direction with the rotary arm 231 on the rail 1130 so that the rotary arm 231 is moved back and forth, and the other end is rotated. A rod 237 connected to the arm 231;
After the back and forth operation of the rod 237, the offset roller 110 mounted on the gravure printing machine and the offset roller 110 'transferred through the conveyor belt 221 are gripped to exchange positions. A motor (250) for rotating the rotating arm (231) by rotating the cylinder (230);
Gravure offset roller automatic exchange device comprising a. The method of claim 5, wherein
The drying chamber 240 includes drying means 242a and 242b for drying the offset roller 110,
And the drying means (242a, 242b) is one of a blower, an ultraviolet (UV) lamp, a heater and an infrared lamp. The method according to claim 5 or 6,
The drying chamber 240 is a gravure offset roller automatic exchange apparatus further comprises a discharge port for discharging the solvent generated during the drying of the offset roller (110) (241). The method according to claim 5 or 6,
The conveyor belt 221 is provided with an offset roller fixing means 113 for fixing the offset roller 110, a gravure offset roller is provided with a belt drive means 220 for driving the conveyor belt 221. Automatic exchange device. The method according to claim 5 or 6,
The plurality of roller sets (1110, 1111, 1112) is a gravure offset roller automatic exchange device is configured for more than two degrees printing.

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