JPH06143542A - Printer - Google Patents

Abstract

PURPOSE:To rationalize printing steps by automatically, safely and rapidly switching inks and cleaning in a printer. CONSTITUTION:Ink is discharged to be supplied from an ink discharge nozzle 23 to be moved laterally of a printer to a fountain roll 11, transferred to be supplied to a mixing roll 12 via an ink fountain roll 13 to be oscillated, and ink can be replaced merely by replacing the nozzle 23. A cleanser discharge nozzle 24 for discharging cleanser while moving laterally of the printer is mounted at any roll (11, 12) of an ink supply unit to circulate the cleanser to be discharged and supplied to the overall ink supply unit, thereby automating safely and rapidly cleaning operation upon replacing of the ink.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink supply device of a printing machine for transferring and supplying ink from a fan roll to a plate cylinder through several rolls.

[0002]

2. Description of the Related Art In a conventional printing machine, a blade is brought into contact with a peripheral surface of a fan roll to form an ink fountain, and a large amount of ink is put therein. Stop, remove the ink remaining in the ink fountain with a spatula, wipe off the ink adhering to the ink fountain, and manually rotate the fan rolls and other rolls, while using a waste cloth that has been thoroughly impregnated with the cleaning liquid (solvent). Cleaning the surface.

[0003]

The work at the time of switching the ink is inefficient because it is a manual work, and in the roll wiping work performed by manual rotation, the fingertip is bitten between the rolls together with the waste cloth. There is a risk that the ink that has been ejected and that is still adhering to the surface of the ink fountain will be lost, and since the ink is frequently changed, the hands of workers cannot be washed off by the adhering ink. The more polluted it will be. In view of this, the present invention is intended to free the worker from the work that is dangerous and dirty by automating the work at the time of ink switching.

[0004]

That is, a printing machine 29 according to the present invention includes a fan ten roll 11 and several rolls 12.
An ink supply device for transferring the ink to the plate cylinder 20 via 13, 14, 15 ... Is reciprocated between the fan roll 10 and the kneading roll 12 by being pivotally supported by the swing arm 21. 11 is provided with a feeding roll 13 for transferring the ink 22 from the kneading roll 12 to the kneading roll 12, and an ink discharge nozzle 23 for discharging the ink 22 to the peripheral surface of the fan ten roll 11 while moving in the width direction of the printing machine. One of the features.

The diameter of the ink discharge nozzle 23 is preferably such that the ink drops from the ink discharge nozzle 23 like a thread having a diameter (thickness) of about 1 mm.

In order to move the ink discharge nozzle 23 in the width direction of the printing machine, a rail 30 supported in the width direction of the printing machine is used.
It may be carried by the slider 31 that reciprocates above (FIGS. 1 and 3), or may be carried by the tip of the arm 32 that swings in the width direction in a narrow width printing machine (FIG. 4). Ink is supplied from the ink tank 33 to the ink discharge nozzle 23, but the ink tank 33 may be installed at a position apart from the slider 31 and the arm 32, and may be supplied with ink via the hose 35 (see FIG. 3). 4), and a slider 31 that can replace the ink tank 33 with a replaceable cartridge.
The ink nozzle 23 may be mounted on the tip of the arm 32 or the arm 32 (FIG. 1).

When the ink discharge nozzle 23 and the ink tank 33 are used as a cartridge in this way, it is convenient for small lot printing with a small printing amount. In that case, a slider 31 is equipped with a turntable and different numbers of ink are filled. Place the individual ink tank cartridge (33) on the turntable, and remotely control the turntable to switch the ink, and the required ink tank cartridge (33)
It is preferable that the ink discharge nozzle 23 of No. 3 is projected to the peripheral surface of the fan ten roll 11.

A blade 37 and a kneading roll 38 for blocking the ink 22 to be discharged and supplied are applied to the peripheral surface of the fan ten roll 11. Although the blade 37 shown in the figure is straight and continuous in the width direction of the printing machine, the fan ten roll 11 is provided by a large number of adjusting screws arranged in the width direction of the printing machine.
By applying a dividing blade that can partially adjust the film thickness of the ink coating film by partially changing the gauge between it and the peripheral surface, and by changing the moving range and moving speed of the ink discharge nozzle 23, It is also possible to supply ink corresponding to the used amount to the portion of the peripheral surface of the fan ten roll 11 corresponding to the printing screen where the used amount of ink is large. The amount of ink delivered from the ink tank 33 to the ink discharge nozzle 23 is controlled by the rotation speed of the delivery screw and the delivery gear.

The second feature of the present invention is that the cleaning liquid discharge nozzle 24 discharges the cleaning liquid to the peripheral surface of the fan ten roll 11.
It is to have. The cleaning liquid discharge nozzles 24 may be mounted in a row in a row on a support rod supported in parallel with the fan ten roll 11, or may be run in the width direction of the printing machine like the ink discharge nozzles 23. When it is moved in the width direction of the printing machine, like the ink discharge nozzle 23, it is carried by the slider 31 that reciprocates on the rail 30, or by the tip of the arm 32 that swings in the width direction. The cleaning liquid tank 34 for supplying the cleaning liquid is
Is installed at a position away from the slider 31 or the arm 32 and supplies the cleaning liquid to the nozzle 24 via the hose 36, or
Alternatively, the nozzle 24 and the tank 34 may be combined into a cartridge.

A third feature of the present invention is that the printing machine moves toward the peripheral surface of the fan ten roll 11 and comes into contact with the blade 2.
5 is provided. The blade 25 is for scraping the cleaning liquid supplied from the cleaning liquid discharge nozzle 24 and flowing on the peripheral surface of the fan ten roll 11, and is driven by the air cylinder 39 or the like so as to move to the fan ten roll 11.

A fourth characteristic of the present invention is that any one of the rolls (11, 12, 14, 15, ...) That transfers the ink from the fan ten roll 11 or the fan ten roll to the plate cylinder while moving in the width direction of the printing machine. ......) is to be provided. The wiping tool (not shown) wipes off the cleaning liquid scraped off by the blade 25 and still adhering to the peripheral surface of the roll, and a thick non-woven fabric or felt is used for it, and the ink discharge nozzle 23 or the cleaning liquid discharge nozzle is used. Similar to 24, it may be mounted on a slider and driven so as to reciprocate in the width direction of the printing machine while stroking the surface of the blade 25.

The fifth feature of the present invention is that the calling roll 1 swings back and forth between the fan roll 10 and the kneading roll 12.
The pivoting shaft 27 of the pivoting arm 21 that pivotally supports 3 is pivotally supported by a support member 28 that moves toward the gap between the fan roll 10 and the kneading roll 12. Similarly to the blade 25, the supporting member 28 that supports the swing shaft 27 may be driven by the air cylinder 39 or the like.

The driving of the support member 28 for supporting the swing shaft 27 of the swing arm 21 is as follows. First, during cleaning, the calling roll 13 is moved and separated from the fan ten roll 11, and the fan ten roll 11 is moved. Secondly, since the cleaning is performed by rotating at a high speed, secondly, the calling roll 13 is in close contact with the fan ten roll 11 and the kneading roll 12, and the cleaning liquid discharged and supplied to the peripheral surface of the fan ten roll 11 is
This is because it is allowed to flow to the kneading roll 12. Therefore, the outer diameter D of the calling roll 13 that swings back and forth between the fan ten roll 11 and the kneading roll 12 may be set larger than the gap (distance) L between the fan ten roll 11 and the kneading roll 12. Further, when the blade 25 for scraping the cleaning liquid is applied to the peripheral surface of the fan ten roll 11, it is not always necessary to drive the support member 28 that supports the swing shaft 27 of the swing arm 21 (FIG. 1). .

Next, an operation procedure of the printing machine according to the present invention will be described. First, during printing, the cleaning liquid discharge nozzle 24 is closed and stopped, the cleaning liquid scraping blade 25 is separated from the peripheral surface of the roll, and the ink 22 reciprocates over the entire width of the peripheral surface of the fan ten roll 11. It is discharged and supplied from the nozzle 23 at any time, and the amount of the discharge is adjusted by the blade 37 or the kneading roll 38 to adjust the film thickness of the ink coating film.
Is transferred and supplied to the plate surface 20 via the form roll 16.

When the ink is replaced after the printing is completed, the ink discharge nozzle 23 is closed and stopped, and instead, the cleaning liquid is discharged from the cleaning liquid discharge nozzle 24 to the peripheral surface of the roll (11) so that all the rolls 11, 12 ... 13, 14, 15, 1
It is transferred and supplied to the peripheral surface of No. 6. At this time, the blade 25
Moves to and comes into contact with the peripheral surface of the roll (11, 15), scrapes off the cleaning liquid that is transferred and supplied and adheres to the peripheral surface of the roll, and discharges it to the tray 26. In this way, the cleaning liquid moves from the cleaning liquid discharge nozzle 24 to the receiving tray 26, the ink adhering to the peripheral surface of the roll is washed off, and finally adheres to the peripheral surface of the roll by a wiping tool such as a nonwoven fabric. The cleaning liquid present is wiped off, the ink discharge nozzle 23 is replaced, and the ink switching work is completed.

As described above, the cleaning is performed by rotating each roll. In that case, it is preferable to rotate the roll at a high speed. In this case, the support member 28 that pivotally supports the swing shaft 27 of the swing arm 21 of the calling roll 13 having the outer diameter D larger than the gap (distance) L between the fan roll 10 and the kneading roll 12 is attached to the air cylinder 39. When driven toward the gap between the fan ten roll 11 and the kneading roll 12, the calling roll 13 comes into close contact with the peripheral surfaces of both the fan ten roll 11 and the kneading roll 12, and as a result, the swing arm 2
It is possible to transfer and supply the cleaning liquid to all rolls without oscillating 1 at a high speed.

In this way, the swing arm 2 is used during cleaning.
No need to rock 1 and all rolls 11/12 / 14.1
Even if 5/16 is rotated at high speed, the undesired vibration due to the swinging motion of the swinging arm 21 does not occur in the entire printing machine 29, so that all the rolls 11/12/14/15/1.
6 can be rotated at high speed to wash the printing machine in a short time. In addition, the air cylinder 39 is used to remove the roll 1 from the gap between the fan roll 10 and the kneading roll 12.
When 3 is driven away, only the fan ten roll 11 can be rotated at high speed for cleaning.

The cleaning liquid discharge nozzle 24 and the blade 25 are
It may be applied to other rolls (12) together with the fan ten roll 11 (Fig. 1). However, if the cleaning liquid discharge nozzle 24 and the blade 25 are applied only to the rolls (12) other than the fan ten roll 11, the fan ten roll 11 cannot be effectively cleaned. The reason is that the fan ten roll 11 is a kneading roll 12.1 that constantly rotates at high speed.
Unlike 4 and form roll 16, it rotates slowly at low speed, and depending on the model, it rotates at low speed intermittently.
This is because the fan ten roll 11 is not cleaned even if the cleaning liquid discharge nozzle 24 and the blade 25 are applied only to the kneading rolls 12 and 14 and the form roll 16 that rotate at high speed.
Therefore, in order to effectively carry out the present invention, the cleaning liquid discharge nozzle 24 and the blade 25 are applied to the fan ten roll 11, and the call roll 13 is separated from the fan ten roll 11 by the air cylinder 39.
It is recommended that only the high speed can be rotated.

[0019]

The printing machine according to the present invention does not have an ink fountain, and the ink is ejected and supplied in small amounts according to the consumption speed during printing. Therefore, at the end of printing, residual ink is left on the blade 37 and the kneading roll 38. Therefore, the remaining ink does not need to be taken out, so that the ink switching time is shortened by that much, and the loss of ink that occurs when the remaining ink is taken out is eliminated. In this way, the ink discharge nozzle 23 has a diameter (thickness) of about 1 mm in order to discharge and supply the ink in a small amount according to the consumption speed during printing to reduce the loss of ink at the end of printing. It is recommended that the ink be dripping in the form of threads.

In the present invention, the ink discharge nozzle 23
The ink can be switched by simply replacing the ink, and the cleaning work of the ink supply device due to the ink switching is reduced by the amount of ink loss at the end of printing, and the cleaning work is performed from the cleaning liquid discharge nozzle 24 to the tray 26. Since the cleaning liquid is automatically circulated to and the subsequent cleaning liquid is automatically wiped off, the fan ten roll 11 can be rotated at a high speed during that time, and the ink switching time is greatly shortened.

From the cleaning liquid discharge nozzle 24,
The cleaning liquid is discharged and supplied in a small amount, so the excess cleaning liquid does not drip like in the case of manually attaching the cleaning liquid to the waste cloth, the amount of cleaning liquid used is small, and drying after cleaning It takes only a short time, and the ink switching time is shortened in this respect as well.

In addition, in the cleaning process accompanying the ink switching, it is not necessary to touch the ink or cleaning liquid with hands or to put hands between the rolls, so that it is possible to free from a dirty and dangerous work.

As described above, according to the present invention, since the ink switching and cleaning of the printing press are automatically and safely and quickly performed,
The printing process is greatly streamlined.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a printing machine according to the present invention.

FIG. 2 is a side view of a main part of the printing machine according to the present invention.

FIG. 3 is a perspective view of an ink supply portion of the printing machine according to the present invention.

FIG. 4 is a perspective view of an ink supply portion of the printing machine according to the present invention.

[Explanation of symbols]

11 Fan Ten Roll 12 Kneading Roll 13 Calling Roll 14 Kneading Roll 15 Kneading Roll 16 Form Roll 20 Plate Cylinder 21 Swinging Arm 22 Ink 23 Ink Discharging Nozzle 24 Cleaning Liquid Discharging Nozzle 25 Blade 26 Saucepan 27 Swinging Shaft 28 Supporting Member 29 Printing Machine 30 Rail 31 Slider 32 Arm 33 Ink tank 34 Cleaning liquid tank 35 Hose 36 Hose 37 Blade 38 Kneading roll 39 Air cylinder

Claims (7)

[Claims] 1. An ink supply device for a printing press, which supplies ink to a plate cylinder 20 from a fan ten roll 11 through several rolls 12, 13, 14, 15 ... A reciprocating roll 13 which is pivotally supported by an arm 21 and reciprocates between the fan ten roll 11 and the kneading roll 12 to transfer the ink 22 from the fan ten roll 11 to the kneading roll 12, and (b) moves in the width direction of the printing machine. A printing machine comprising an ink discharge nozzle 23 that discharges the ink 22 onto the peripheral surface of the fan ten roll 11 while simultaneously. 2. The printing machine according to claim 1, wherein the ink discharge nozzle 23 according to claim 1 is mounted in a cartridge type ink tank 33. 3. The printing machine according to claim 1, wherein:
The printing machine according to claim 1, further comprising a cleaning liquid discharge nozzle 24 that discharges the cleaning liquid to the peripheral surface of the fan ten roll 11. 4. The cleaning liquid discharge nozzle 24 according to claim 3 is mounted on a cartridge-type cleaning liquid tank 34 which runs in the length direction of the fan ten roll 11, and the cleaning liquid discharge nozzle 24 according to claim 3 above. Printing machine. 5. The printing machine according to claim 3 above,
The printing machine according to claim 2, further comprising a blade 25 that moves toward and contacts the peripheral surface of the fan ten roll 11. 6. The printing machine according to claim 3 above,
The printing machine according to claim 3, further comprising a wiper that moves in the width direction of the printing machine and contacts the fan ten roll 11. 7. The printing press according to claim 3 above,
4. The printing according to claim 3, wherein the swing shaft 27 of the swing arm 21 is pivotally supported by a support member 28 that moves in a direction intersecting the gap between the fan roll 10 and the kneading roll 12. Machine.