KR20130104711A - Doctoring apparatus of gravure printing machine - Google Patents

Abstract

PURPOSE: A doctoring device for a gravure printer is provided to obtain a uniform doctoring quality as the position of a doctor unit is controlled by operating each driving unit with a controller. CONSTITUTION: A doctoring device for a gravure printer includes a doctor unit (100), a deformation unit (200), an advance-and-retreat unit (300), a lifting unit (400), and a controller. The doctor unit is arranged along the longitudinal direction of a printing cylinder (10) and includes blades removing ink remaining on a non-drawing portion of the printing cylinder. The deformation unit includes a first driving unit (210) and adjusts the angle of the doctor unit. The advance-and-retreat unit includes a second driving unit (310) and advances and retreats the doctor unit. The lifting unit includes a third driving unit (410) and lifts the doctor unit upwardly and downwardly. The controller stores a preset doctoring position value of the doctor unit according to printing conditions and operates the driving units depending on the stored position value, thereby controlling the position of the doctor unit.

Description

Doctering device of gravure printing machine {DOCTORING APPARATUS OF GRAVURE PRINTING MACHINE}

The present invention relates to a doctoring apparatus of a gravure printing machine, and more particularly, to a doctoring apparatus for improving the doctoring performance and the ease of operation by allowing the position of the doctor blade to be automatically controlled according to printing conditions.

The technology related to the docking device for improving the docking performance and operation convenience is Korean Patent Publication No. 10-1001667 (published Dec. 15, 2010, hereinafter referred to as 'advanced technology') Doctor blade adjusting device ".

The prior art, "two rails are arranged in parallel symmetry while the rail is fixedly installed on both sides of the upper end;

A support frame for sliding the pattern roller and the doctor blade while slidingly coupled to each of the rails on the other side of the bed;

A quick cylinder installed on the bed while coupling the rod to the other side of the support frame to provide forward and backward action;

An offset roller rotatably installed at an intermediate portion of the bed to print a pattern transferred onto a steel sheet while being in surface contact with the pattern roller;

A support frame mounted on one side of the offset roller and slidingly coupled to the rail to mount the washing roller and the doctor blade in contact with the offset roller;

And a support roller supporting the offset roller while being installed to be liftable under the bed.

It is a technology that allows both ends of the doctor blade to move forward and backward simultaneously or individually.

The prior art allows both ends of the doctor blade to be moved forward, backward or individually by the operating unit at the same time, so that the convenience of adjustment work for maintaining the balance of the doctor blade can be significantly improved.

It is difficult to expect a uniform quality by the operator to operate the operating unit manually, there is a problem that a lot of time is required when the position is set by the operator manually reset the position of the doctor blade when the printing conditions change.

Accordingly, an object of the present invention is to provide a doctoring apparatus capable of automatically controlling the position of a blade according to printing conditions.

In order to solve the above problems, the gravure printing apparatus of the present invention,

A doctor unit disposed along a length of the printing cylinder, the doctor unit having a blade to remove ink from the non-flammable portion of the printing cylinder;

A variable unit having a first driving unit to adjust an angle of the doctor unit;

An advance and retreat unit having a second driving unit and operating the retreat unit;

A lifting unit having a third driving unit to move the doctor unit in a lifting operation; And

A controller configured to store a doctoring position value of the doctor unit set according to a printing condition and to control the position of the doctor unit by operating the respective driving units according to the stored position value;

.

The doctoring apparatus of the gravure printing machine according to the present invention,

As the controller controls the position of the doctor unit by operating each driving unit, it is possible to expect a uniform doctoring quality, and the position resetting time according to the change of the printing conditions can be greatly shortened.

1 is a three-dimensional configuration diagram of a doctoring apparatus of a gravure printing machine according to an embodiment of the present invention.
2 is a front configuration diagram of a doctoring apparatus of a gravure printing machine according to an embodiment of the present invention.
Figure 3 is a side configuration diagram of the doctoring apparatus of the gravure printing machine according to an embodiment of the present invention.
Figure 4 is a side configuration diagram of the pressing unit shown in FIG.
5 is a side configuration view showing another embodiment of the doctor unit shown in FIG.

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

As shown in Figure 1 to Figure 4, the gravure printing apparatus of the gravure printing machine according to an embodiment of the present invention is largely the doctor unit 100, the variable unit 200, the retreat unit 300, the lifting unit 400, the controller ( 500) and the pressurizing unit 600.

Looking at each configuration below,

The doctor unit 100 is

Inking and doctoring is performed on the outer circumferential surface of the printing cylinder 10,

As shown in Figure 3,

A chamber (120) having an internal ink container (121) and an ink ejecting unit (122) in communication with the container (121);

A blade (110) mounted on an upper portion of the discharge part (122) of the chamber (120) to remove ink deposited on a non-flammable part (not shown) of the printing cylinder (10); And

It is mounted to the lower portion of the discharge portion 122 of the chamber 120, and comprises a seal plate (130) which is in contact with the printing cylinder 10 when doctoring.

Here, the printing cylinder 10 is used in a gravure printing machine in the field of printed electronics, and a line portion (not shown) is engraved on the outer circumferential surface thereof.

A pipe nipple 123 is mounted to the chamber 120, whereby the chamber 120 is connected to a separate ink supply device to receive ink from the receiving part 121.

The ink supplied to the accommodation part 121 is applied to the outer circumferential surface of the printing cylinder 10 through the discharge part 122.

The blade 110 is in contact with the outer circumferential surface of the printing cylinder 10 when inking by the chamber 120 to remove the ink on the non-radiation portion of the printing cylinder 10.

As a result, the doctor unit 100 performs inking and doctoring on the printing cylinder 10 at the same time.

The blade 110 is mounted on the inner wall of the chamber 120 so that an end thereof protrudes from the chamber 120 by a predetermined length, and at this time, a reinforcement plate is provided on the chamber 120 and the blade 110. 140 is interposed.

The seal plate 130 is in contact with the outer peripheral surface of the printing cylinder 10 during inking and doctoring to prevent the leakage of ink.

The seal plate 130 is mounted on the lower portion of the inner wall of the chamber 120 so that the end portion of the seal plate 130 protrudes from the chamber 120. In this case, the seal plate 130 is also provided in the chamber 120 and the seal plate 130. ) Is interposed.

The seal plate 130 may have the same structure as that of the blade 110.

That is, it is provided with two blades 110, it can be used as the seal plate 130 by mounting one of them below the inner wall of the chamber 120.

On the other hand, as shown, the blade 110 is disposed so as to lie on the opposite side of the rotation direction of the printing cylinder 10 during doctoring.

As a result, the blade 110 is bent along the rotational direction of the printing cylinder 10 during the operation of the pressurizing unit 600 which will be described later, so that even if the blade 110 is pressed with a large force, the doctoring can be made stable. As a result, the print quality may be further improved.

As shown in FIG. 5, the doctor unit 100 may further include an inking roller 150 that is pivotally mounted to the discharge part 122 of the chamber 120.

Herein, the inking roller 150 is disposed in parallel with the printing cylinder 10 so as to be close to the outer circumferential surface of the printing cylinder 10 when inking and reading by the doctor unit 100,

Accordingly, the inking roller 150 stabilizes the flow of ink by turning in a direction corresponding to the rotational direction of the printing cylinder 10 by the flow of ink during the turning operation of the printing cylinder 10, and the ink It is to be able to be more efficiently filled in the wire of the printing cylinder (10).

The variable unit 200 is

As for adjusting the angle of the doctor unit 100,

As shown in Figures 2 and 3,

Two fixed blocks 220 spaced apart from each other;

Rotating shaft 230, the both ends are pivotally fitted to the two fixed block 220, respectively;

A first reduction module 240 coupled to the fixed block 220 and having an output unit 241 connected to the rotation shaft 230; And

It includes a first driving unit 210 connected to the input unit 242 of the first reduction module 240.

Here, the deflection unit 200 is interlocked with the doctor unit 100 by the advancing unit 300 connects the rotary shaft 230 and the chamber 120.

As a result, when the first driving unit 210 is operated to rotate the input unit 242 of the first reduction module 240, the rotation shaft 230 connected to the output unit 241 of the first reduction module 240. ) Is pivoting, and the doctor unit 100 is pivoted together with the rotary shaft 230 by the retreat unit 300 to adjust the angle of the doctor unit 100.

As shown, the first reduction module 240 is a form in which the input unit 242 and the output unit 241 intersect with each other, a known worm reducer is applied. However, the first reduction module 240 is not limited to the worm reducer may be applied to a variety of known speed reducer.

In addition, the first driving unit 210 may use a servo motor to enable precise control by the controller 500.

The advance unit 300 is

As the doctor unit 100 to move forward and backward,

As shown in Figures 2 and 3,

A guide block 320 coupled to the rotation shaft 230 of the variable unit 200;

A slide block 330 coupled to the chamber 120 of the doctor unit 100, having a spiral fastening hole 331, slidably mounted to the guide block 320;

Screw 340 is coupled to the fastening hole 331 of the slide block 330; And

It is coupled to the guide block 320, and comprises a second driving unit 310 to rotate the screw 340.

In this case, the guide block 320 and the slide block 330 are formed with an upper dovetail groove portion 321 and a lower dovetail portion 332, respectively, to move forward and backward. The dovetail structure is coupled to each other to prevent the departure of.

As a result, when the second driving unit 310 is operated to rotate the screw 340, the slide unit 330 is moved on the screw 340 by the fastening hole 331, thereby allowing the doctor unit to move. 100 moves forward and backward.

In addition, the second driver 310 preferably uses a servo motor to enable precise control by the controller 500 similarly to the first driver 210.

The lifting unit 400 is

As it is to operate the doctor unit 100 in the lifting operation,

As shown in Figures 2 and 3,

Two racks 420 respectively coupled to two lower fixing blocks 220;

Two pinions 430 respectively engaged with the two racks 420;

A drive shaft 440 coupled to the two pinions 430;

A second reduction module 450 having an output unit 451 connected to the drive shaft 440; And

It includes a third driving unit 410 connected to the input unit 452 of the second reduction module 450.

As a result, when the third driving unit 410 is operated to rotate the input unit 452 of the second reduction module 450, the drive shaft 440 connected to the output unit 451 of the second reduction module 450. ) And the pinion 430 coupled to the drive shaft 440 are pivoted, whereby the rack unit 420 engaged with the pinion 430 moves up or down, and thus the deflection unit 200 and the The retreat unit 300 and the doctor unit 100 are lifted together.

As shown, the second deceleration module 450 is a form in which the input unit 452 and the output unit 451 intersect with each other like the first deceleration module 240, and a known worm reducer is applied. And, this also is not limited to the worm reducer may be applied to a variety of known reducer.

In addition, the third driving unit 410 preferably uses a servo motor to enable precise control by the controller 500 similarly to the first and second driving units 210 and 310.

The controller 500 is

As connected to each of the driving unit (210, 310, 410),

The doctoring position value of the doctor unit 100 set according to the printing condition is stored, and the driving unit 210, 310, 410 is operated according to the stored position value to control the position of the doctor unit 100. .

In other words, the doctor unit 100, in particular the blade 110 during the doctoring has a variety of positions depending on the printing conditions such as the size and rotational speed of the printing cylinder 10, the viscosity of the ink,

The operator stores the optimal reading position according to each printing condition in the controller 500 and stores the data, respectively, and easily inking and reading the printing cylinder 10 by loading data corresponding to the printing condition during the operation. It becomes possible to carry out.

As a result, the controller 500 operates the driving units 210, 310, and 410 to control the position of the doctor unit 100, so that a uniform doctoring quality can be expected. Positioning time of the doctor unit 100 can be significantly shortened.

The controller 500 may be a known programmable logic controller (PLC). A human machine interface (HMI) such as a touch screen is connected to the controller 500 for its operation.

The pressurizing unit 600 is

The blade 110 of the doctor unit 100 is to be in close contact with the non-radiation portion of the printing cylinder (10).

In other words, the pressurizing unit 600 moves the doctor unit 100 to the printing cylinder in a state in which the blade 110 and the seal plate 130 of the doctor unit 100 are in contact with the printing cylinder 10. 10) the pressure is applied to the blade 110 to provide pressure for doctoring.

And as a structure for transmitting the driving force by the operation of the pressing unit 600 to the doctor unit 100,

As shown in Figures 2 and 4,

The rotary shaft 230 is an outer shaft 231 connected to the output unit 242 of the first reduction module 240 and an outer shaft fitted to the outer shaft 231 and connected to the guide block 320. Shaft 232,

The pressurizing unit 600 is

A first relay member 610 coupled to the inner shaft 231;

A second relay member 620 coupled to the outer shaft 232; And

Body 631 is coupled to the first relay member 610, the rod 632 comprises a cylinder 630 coupled to the second relay member 620.

Herein, the operation of the cylinder 630 is controlled by the controller 500.

In this case, the guide block 320 is pivotally coupled to the inner shaft 231, and is coupled to interlock with the outer shaft 232.

As a result, the pressurizing unit 600 provides a rotational driving force to the outer shaft 232 through the rod 632 and the second relay unit 620 as the cylinder 630 is operated. The driving force is transmitted to the doctor unit 100 through the advancing unit 300 to provide pressure for doctoring the blade 110.

On the other hand, as shown in Figure 2 the lifting unit 400 may be provided with a support member 460.

The support member 460 is disposed above the driving shaft 440, and is disposed in parallel with the driving shaft 440 to support the two racks 420.

In addition, the support member 460 is formed with an internal space portion 461, the space portion 461 is connected to a separate compressor (compressor) and the cylinder 630, to store the compressed air generated by the compressor After the supply to the cylinder 630.

In the above description of the present invention with reference to the accompanying drawings, a description has been made mainly on the "reader of the gravure printing machine" having a specific shape and structure, the present invention can be variously modified and changed by those skilled in the art, such variations and modifications Should be construed as falling within the protection scope of the present invention.

100; Doctor unit
110; blade
120; chamber
121; Receptacle 122; Discharge part 123; nipple
130; Seal Plate
140; Reinforced plate
150; Inking Roller
200; Inclined unit
210; The first driving unit
220; Fixed block
230; Rotating shaft
231; Inner shaft 232; Outer shaft
240; 1st reduction module
241; Output section 242; Input
300; Advance Unit
310; The second driver
320; Guide Block
321; Dovetail Groove
330; Slide block
331; Fasteners 332; Dovetail part
340; Screw
400; Lift unit
410; 3rd driving part
420; Rack
430; Pinion
440; driving axle
450; 2nd reduction module
451; Output section 452; Input
460; Support member
461; Space portion
500; controller
600; Pressure unit
610; First relay member
620; Second relay member
630; cylinder
631; Body 632; road

Claims (7)

A doctor unit (100) disposed along the longitudinal direction of the printing cylinder (10) and having a blade (110) for removing ink from the non-fire line portion of the printing cylinder (10);
An inclination unit 200 having a first driving unit 210 and adjusting an angle of the doctor unit 100;
An advance and retreat unit having a second driving unit 310 and operating the advance and retreat of the doctor unit 100;
A lifting unit 400 having a third driving unit 410 and operating the lifting unit 100 in a lifting operation; And
A doctoring position value of the doctor unit 100 set according to a printing condition is stored, and the respective driving units 210, 310, and 410 are operated according to the stored position value to control the position of the doctor unit 100. Controller 500;
Doctor gravure printing device comprising a.
The method of claim 1,
The variable unit 200 is
Two fixed blocks 220 spaced apart from each other;
Rotating shaft 230, the both ends are pivotally fitted to the two fixed block 220, respectively;
A first reduction module 240 coupled to the fixed block 220 and having an output unit 241 connected to the rotation shaft 230; And
The first driving unit 210 connected to the input unit 242 of the first reduction module 240;
Doctoring apparatus of the gravure printing machine comprising a.
The method of claim 2,
The advance unit 300 is
A guide block 320 coupled to the rotation shaft 230;
A slide block 330 coupled to the chamber 120 of the doctor unit 100, having a spiral fastening hole 331, slidably mounted to the guide block 320;
Screw 340 is coupled to the fastening hole 331 of the slide block 330; And
The second driving part 310 coupled to the guide block 320 and rotating the screw 340;
Doctoring apparatus of the gravure printing machine comprising a.
The method of claim 2,
The lifting unit 400 is
Two racks 420 respectively coupled to two lower fixing blocks 220;
Two pinions 430 respectively engaged with the two racks 420;
A drive shaft 440 coupled to the two pinions 430;
A second reduction module 450 having an output unit 451 connected to the drive shaft 440; And
The third driving part 410 connected to the input part 452 of the second reduction module 450;
Doctoring apparatus of the gravure printing machine comprising a.
The method of claim 3,
The rotary shaft 230 is an outer shaft 231 connected to the output unit 242 of the first reduction module 240 and an outer shaft fitted to the outer shaft 231 and connected to the guide block 320. Shaft 232,
A pressure unit 600 is further provided to closely contact the blade 110 of the doctor unit 100 to the non-fired portion of the printing cylinder 10.
The pressurizing unit 600 is
A first relay member 610 coupled to the inner shaft 231;
A second relay member 620 coupled to the outer shaft 232; And
A cylinder 630 having a body 631 coupled to the first relay member 610 and a rod 632 coupled to the second relay member 620;
Doctoring apparatus of the gravure printing machine comprising a.
The method according to any one of claims 1 to 5,
The doctor unit 100 is
A chamber (120) having an internal ink container (121) and an ink ejecting unit (122) in communication with the container (121);
The blade 110 mounted above the discharge part 122 of the chamber 120; And
A seal plate (130) mounted below the discharge part (122) of the chamber (120) and contacting the printing cylinder (10) during doctoring;
Including but not limited to:
The blade 110 is a doctor apparatus for gravure printing, characterized in that arranged to lie on the side opposite to the rotation direction of the printing cylinder (10) during the doctoring.
The method according to any one of claims 1 to 5,
The doctor unit 100 is
A chamber (120) having an internal ink container (121) and an ink ejecting unit (122) in communication with the container (121);
The blade 110 mounted above the discharge part 122 of the chamber 120;
A seal plate (130) mounted below the discharge part (122) of the chamber (120) and contacting the printing cylinder (10) during doctoring; And
An inking roller 150 that is pivotally mounted to the discharge part 122 of the chamber 120 and disposed in parallel with the printing cylinder 10;
Doctoring apparatus of the gravure printing machine comprising a.

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