JP2936413B1 - Printing machine ink fountain device - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To provide a fountain roll 12 and a pot roll 1 at the time of washing.
The lump of ink, which is peeled off from 1A and flows together with the cleaning liquid, is kneaded well with the cleaning liquid so that the lump of ink does not float on the drain of the cleaning liquid, and does not cause clogging of drain grooves and drain pipes. . SOLUTION: Both ends of a groove formed parallel to the axial direction of the rolls 11A and 12 with the circumferential surfaces of a fountain roll 12 and a pot roll 11A which are arranged side by side with the circumferential surfaces facing each other as groove wall surfaces. The partition material 35
The peripheral surface of the fountain roll 12 rises to the peripheral surface of the fountain roll 12, the peripheral surface of the vase roll 11A, and the back surface of the ink fountain 13 surrounded by the left and right partition members 35, 35. An ink fountain device is constituted by providing a drainage kneading roll 10 in contact with the peripheral surface of the roll 11A so as to be able to move up and down. The lump of ink, which is peeled off from the fountain roll 12 and the pot roll 11A and flows together with the cleaning liquid, is kneaded well with the cleaning liquid between the fountain roll 12 and the drain kneading roll 10, and between the pot roll 11A and the drain kneading roll 10. , Dissolved in the drainage of the washing liquid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink fountain device for a printing press.

[0002]

2. Description of the Related Art In a printing press, a blade is brought into contact with a peripheral surface of a fountain roll to form an ink fountain, and a large amount of ink is supplied thereto. When the ink is switched, the rotation of the printing press is stopped. Remove the ink remaining in the fountain with a spatula, wipe off the ink adhering to the ink fountain, and manually rotate the fountain roll and other rolls, and wash the peripheral surface of the rolls with a rag soaked with a cleaning liquid (solvent). doing. This work is manual and inefficient, there is a danger that the fingertips will bite between the rolls, the ink adhering to the surface of the ink fountain will be lost, and the worker's hands will be so dirty that they cannot be washed off. . Therefore, the present inventor attached a printing liquid to a fountain roll, an ink discharge nozzle for discharging ink, and a cleaning liquid discharge nozzle for discharging a cleaning liquid toward the ink kneading roll. When the ink was switched, the ink discharge nozzle was stopped. The invention has invented a printing machine equipped with an automatic washing device for discharging a cleaning liquid from the printer and circulating the same throughout the printing machine, and automatically washing the printing machine rolls in a short period of time, as disclosed in Japanese Patent Application Nos. 6-143542 and 6-198.
225.

Further, in order to make it difficult for a doctor acting on a roll to scrape and remove residual ink to be worn out, as shown in FIG. Pot roll 11A ・ 11B ・ 11
C, the peripheral surface of the pot roll 11A at one end in the roll array body abuts against the peripheral surface of the fountain roll 12, and the plurality of vat rolls 11A, 11B, 11C are provided.
And the surrounding surface of the fountain roll 12 constitutes an ink fountain 13, and when the fountain roll 12 rotates, all the fountain rolls 11A, 11B, 11
C is provided with a fountain roll selection drive means for rotatingly driving C or keeping it in a stationary state, and is in contact with the peripheral surface of the fountain roll 11C at one end of the roll array constituting one side edge of the ink fountain 13. Invented an ink fountain device for a printing press equipped with a doctor 18 and disclosed in Japanese Patent Application Nos. 9-109369 and 9-254.
362.

A gear 15 is mounted on one end of a support shaft 14 of each pot roll 11, and an intermediate gear 16 meshing between the gears is supported by a frame 27A on one side. The other one side frame 27B facing the frame
The motor 17 is mounted on the motor 17. A gear 32 mounted on the motor 17 meshes with a gear 33 mounted on a support shaft 14 </ b> C of a fountain roll 11 </ b> C constituting one edge of the ink fountain 13. For this reason, when the motor 17 rotates, the three vase rolls 1 constituting the roll array are formed.
1A, 11B, 11C rotate synchronously in the same direction,
The direction of rotation is the roll array (11A / 11B / 11).
If the peripheral surface of the fountain roll on the upper surface side of C) faces the edge of the ink fountain, the ink 34 stored in the ink fountain 13
Moves to the fountain roll 11C on the edge side of the ink fountain 13, and is scraped off by the doctor 18 and discharged.

[0005] In FIG. 3, reference numeral 35 denotes a partition member for partitioning the side surface of the ink fountain, and the lower edge thereof is a crescent-shaped notch 3 in close contact with the peripheral surfaces of the fountain roll 11 and the fountain roll 12.
It is 6. The partition member 35 is placed on the pot roll 11 and the fountain roll 12, and the roll 1
It is in close contact with the peripheral surfaces of 1 and 12. Reference numeral 37 denotes a tray, which is removably mounted on an arm 40 protruding from a support member 39 supporting the doctor 18, and the ink that has been scraped and removed by the doctor 18 and accumulated in the tray 37 is transferred to a required container. Transferred.

A rectangular opening is provided inside the frame 27 for supporting the pot roll 11, and this opening is a rail 29 into which a rectangular bracket 28 is slidably fitted. The support shaft 14 of the pot roll 11 is rotatably supported by the brackets 28. A push screw 30 is attached to one end of the frame 27. When the push screw 30 is tightened, the pot rolls come into tight contact with each other (line point contact). 31
Is a compression coil spring, and when the push screw 30 is loosened, the space between the brackets (28, 28) expands and the space between the pot rolls (11
・ The gap of 11) is created.

FIG. 2 shows the ink fountain device shown in FIG. 3 together with a doctor 22 for scraping ink and cleaning liquid from a fixed rotary roll (printing roll) 20 in an ink transfer path from the ink fountain 13 to the plate cylinder 19. 1 illustrates a printing press. The fan 46 is provided with a doctor 46 which reciprocates only when the ink is switched, and the ink 34 attached to the fan roll 12 is scraped and discharged by the doctor 46 when the ink is switched. . Reference numeral 47 denotes a tray for the scraped ink. Similarly, the doctor 18 on the edge side of the ink fountain 13 also
It is mounted on an arm 40 protruding from a support member 39 which is driven and reciprocated by an air cylinder 38, and comes into contact with the jar roll 11C only at the time of ink switching, and is then rotated by the motor 17 by the jar roll 11C. And rubs against the doctor 18.

The fountain roll 12 is provided with a cleaning liquid jet nozzle 48 for jetting a cleaning liquid only when the ink is switched.
The pot roll 11A ・ 1 is installed facing the periphery.
After the ink is scraped and removed from the doctor 18 by rotation of the 1B and 11C, the washing waste liquid ejected from the washing liquid ejecting nozzle 48 and accumulated in the ink fountain 13 is scraped by the doctor 18 to the receiving tray 37 similarly to the ink. Removed.

A doctor 22 attached to the ink transfer path
Is attached so as to act on the peripheral surface of the moving roll 21 which comes into contact with the printing roll 20 without being directly attached to the printing roll 20 constituting the printing press main body. A friction member is mounted on each support shaft of the printing roll 20 and the moving roll 21. When the moving roll 21 approaches the printing roll 20 to such an extent that it touches the printing roll 20, the friction wheels come into close contact and rub against each other. The rotation of 20 is transmitted to the moving roll 21, and the ink and the cleaning liquid adhering to the peripheral surface of the printing roll 20 move to the peripheral surface of the moving roll 21 and are scraped off by the doctor 22. 43 is a saucer. The moving roll 21 is supported by a support frame 44 of the tray 43. Moving roll 21 and saucer 43
Is supported by a support frame 44 and is reciprocated to the moving roll 21 by an air cylinder. The cleaning liquid spray nozzles 48 are appropriately provided to the ink roll 49 and other printing rolls in addition to the fountain roll 12 so that they can be independently cleaned.

[0010] Japanese Patent Application Nos. 9-109369 and 9-109
According to the prior invention disclosed in US Pat. No. 254,362, the ink 34 remaining in the ink fountain 13 at the time of ink switching is replaced by the fountain roll 1.
1 automatically discharges the remaining ink 3
There is no need for dangerous manual work to remove 4.

[0011]

According to the invention of the prior application, when the ink is switched, the jar roll 11 and the fountain roll 12 are switched.
Are applied to each of the doctors 18 and 46 to remove in advance most of the residual ink adhering to the surfaces of the rolls 11 and 12, and then a cleaning liquid (48) is applied thereto. Doctor 18.
Residual ink which cannot be removed by the step 46 is washed off.
When applying the cleaning liquid, the receiving trays 37 and 47 are replaced with cleaning liquid receiving trays, and the cleaning liquid receiving trays 37 and 47 are replaced.
The waste liquid is collected from 47 through a drain groove or a drain pipe.

The ink is kneaded between the fountain roll 11A and the fountain roll 12, and the fountain roll 11A acts as a doctor to form an ink film of a required thickness on the surface of the fountain roll 12. Therefore, a gap necessary for kneading the ink to make the ink film have a required thickness is provided between the jar roll 11A and the fountain roll 12, and even if they are brought into close contact with each other, the gap is approximately between them. A gap of 0.1 mm is created. Therefore, when the cleaning liquid is applied between the fountain roll 12 and the jar roll 11A from which much of the remaining ink has been removed by the doctors 18 and 46, the cleaning liquid has an extremely low viscosity as compared with the ink. Roll 11A
, The fountain roll 12 and the pot roll 1
The remaining ink fixed to 1A is not kneaded with the cleaning liquid,
The adhered residual ink is peeled off and flows down from between the fountain roll 12 and the pot roll 11A, and floats in the drainage of the cleaning liquid like a lump floating substance.

[0013] The lump of ink that floats the drainage in this way causes clogging of the drainage groove and the drainage pipe, and sometimes prints for cleaning the drainage groove and the drainage pipe. In some cases, the cleaning operation of the rolls must be interrupted. In addition, a plurality of pot rolls 11A, 11B, 1
In the ink fountain device using 1C, these rolls are driven to rotate only at the time of ink switching.
mm, and such a situation does not occur between the pot rolls.

[0014]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to eliminate clogging of a drain groove and a drain pipe caused during cleaning with a cleaning liquid in the above-mentioned prior application.

[0015]

In the ink fountain device according to the present invention, the roll surfaces of a fountain roll 12 and a fountain roll 11A, which are arranged side by side with the circumferential surfaces facing each other, are formed as groove wall surfaces. The peripheral surface of the fountain roll 12, the peripheral surface of the pot roll 11A, and the left and right partition members 35, 35, which can be formed by closing both ends of the groove formed parallel to the axis direction of 12 with the partition members 35, 35. On the back side of the ink fountain 13, the drainage kneading roll 1 which rises and comes into contact with the peripheral surface of the fountain roll 12 and the peripheral surface of the fountain roll 11A.
The first feature is that 0 is provided so as to be able to move up and down.

A second feature of the ink fountain device according to the present invention is that, in addition to the first feature, the peripheral surface of the drainage mixing roll 10 is made of an elastomer.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION As an elastomer constituting the peripheral surface of the drainage kneading roll 10, an elastic polymer material such as nitrile rubber, polyurethane rubber, polyvinyl chloride or the like is used.

In addition to the drainage kneading roll 10, a doctor 46 may be attached to the fountain roll 12 so as to be able to move up and down similarly to the invention of the prior application. When the ink is switched, the doctor 46 acts on the fountain roll 12 prior to the cleaning with the cleaning liquid to remove most of the remaining ink.
The drain kneading roll 10 is replaced with a fountain roll and a pot roll 11
A, and apply a cleaning liquid to those rolls.

The jar roll 11 includes a fountain roll 12
Roll 1 as a doctor to keep the ink film thickness constant
In addition to 1A, similarly to the prior application, another vase roll 11B or vase roll 11C is provided on the vase roll 11A, and the ink fountain 13 can be configured by the plurality of vase rolls 11A, 11B, and 11C. . In that case, FIGS. 2 and 3
As shown in the figure, the doctor 1 is attached to the pot roll 11C on the edge side.
8 and the pot rolls 11A, 11B, 11
The rotation of C only when the ink is switched is the same as in the above-mentioned prior application.

The drainage kneading roll 10 may be driven up and down (reciprocating) toward and away from the fountain roll 12 and the pot roll 11A by an air cylinder or the like, or a manual lever such as a link mechanism, a cam mechanism, or a pulley mechanism may be used. It may be operated (manually) and driven up and down (reciprocating).

[0021]

According to the present invention (claim 1), the gap necessary for kneading the ink during the printing process and making the thickness of the ink film of the fountain roll 12 constant is formed.
Even if the cleaning liquid applied during ink switching or the remaining ink fixed to the fountain roll 12 is peeled and flows out from the gap between the fountain roll 11A and the fountain roll 11A, the lumped floating substance of the cleaning liquid or ink flowing out of the fountain roll 12 12 and the fountain roll 11A is stored between the drainage kneading roll 10 and the cleaning liquid and the lump of the ink are kneaded and finely mixed there, or the lump of the ink is dissolved in the cleaning liquid. Inconvenient, such as the occurrence of clogging of the drain grooves and drain pipes due to the lump of residual ink floating in the drain liquid, making it difficult to collect the drain liquid and having to interrupt the cleaning work Things are avoided.

According to the present invention (Claim 2), since the peripheral surface of the drainage kneading roll 10 is made of an elastomer having elasticity, the drainage kneading roll 10 is connected to the fountain roll 1
2 and the jar roll 11A can be strongly adhered to each other, so that the discharged liquid can be finely and uniformly dispersed and dissolved in the remaining ink.

[Brief description of the drawings]

FIG. 1 is a sectional side view of an ink fountain device according to the present invention.

FIG. 2 is a side view of a printing press using a conventional ink fountain device.

FIG. 3 is a perspective view of a conventional ink fountain device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Drain kneading roll 11 Pot roll 12 Fanten roll 13 Ink pot 14 Support shaft 15 Gear 16 Intermediate gear 17 Motor 18 Doctor 19 Plate cylinder 20 Fixed rotation roll 21 Moving roll 22 Doctor 27 Frame 28 Bracket 29 Rail 30 Push screw 31 Compression coil spring 32 Gear 33 Gear 34 Ink 35 Partition material 36 Notch 37 Receiving tray 38 Air cylinder 39 Supporting member 40 Arm 43 Receiving tray 44 Support frame 46 Doctor 47 Receiving tray 48 Cleaning liquid jet nozzle 49 Ink roll

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-109369 (JP, A) JP-A-60-41239 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B41F 35/04 B41F 31/02 B41F 31/20

Claims (2)

(57) [Claims] 1. A fountain roll (12) and a pot roll (11A), which are arranged in a lateral direction with their peripheral surfaces facing each other, are defined as groove wall surfaces.
The peripheral surface of the fountain roll (12) and the peripheral surface of the pot roll (11A), which can be formed by closing both ends of the groove formed parallel to the axis of A.12) with the partition material (35/35), and the left and right On the back side of the ink fountain (13) surrounded by the partitioning material (35, 35), the drainage kneading roll (1) that rises and comes into contact with the peripheral surface of the fountain roll (12) and the peripheral surface of the fountain roll (11A).
An ink fountain device for a printing press, wherein 0) is provided so as to be able to move up and down. 2. A printing press ink fountain device according to claim 1, wherein the peripheral surface of the drainage mixing roll (10) according to claim 1 is made of an elastomer.