JP2896434B2 - Printing machine ink fountain device - Google Patents

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 installed an ink discharge nozzle that discharges ink to a fountain roll and a cleaning liquid discharge nozzle that discharges a cleaning liquid toward an ink kneading roll in a printing machine. The invention has invented a printing fountain with an automatic cleaning device that discharges a cleaning liquid from the printer and circulates it throughout the printing press, and automatically cleans the printing press roll in a short time.
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. 4, a plurality of parallel-arranged peripheral surfaces are arranged 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 driving means for simultaneously rotating and driving the ink fountain C in the same direction or keeping it stationary, and the fountain roll 11 at one end of a roll array constituting one side edge of the ink fountain 13
Invented a printing press ink fountain device equipped with a doctor 18 in contact with the peripheral surface of C, and filed a patent application with Japanese Patent Application No. 7-292206.

[0004] The pot roll selection drive means interposes an intermediate gear 16 between adjacent gears 15 attached to the support shaft 14 of each pot roll 11 and interposes an intermediate gear 16 to any one of the pot rolls 11C in the roll array. The motor 17 is connected to the support shaft 14C, and when the motor 17 rotates, the three pot rolls 11A, 11B, 11 constituting the roll array are formed.
C rotates synchronously in the same direction. If the rotation direction is such that the peripheral surface of the fountain roll on the upper surface side of the roll array (11A, 11B, 11C) faces the edge of the ink fountain,
The ink stored in the ink fountain 13 moves to the fountain roll 11C on the side of the edge of the ink fountain 13 and is scraped off by the doctor 18. The doctor 18 controls the motor 17 only when the ink is switched. The driven and rotated vase roll 11C will rub against each other. The doctor 18 is mounted on an arm 40 protruding from a support member 39 which is driven and reciprocated by an air cylinder 38. Since the doctor 18 rubs against the jar roll 11C only at the time of ink switching, the doctor 18 is extremely difficult to use. Hard to wear.

[0005] In FIG. 4, reference numeral 35 denotes a partition member for partitioning the side surface of the ink fountain, and the lower edge thereof has 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
1 and 12 are brought into close contact with the peripheral surface by their own weight, and can be removed from the ink fountain 13 at any time. Reference numeral 37 denotes a tray, which is removably mounted on an arm 40 projecting from a support member 39 supporting the doctor 18. The ink scraped and removed by the doctor 18 and accumulated in the tray 37 is transferred to a required container. Can be replaced.

The fountain roll 12 is provided with a cleaning liquid jet nozzle for jetting a cleaning liquid only when the ink is switched, toward the peripheral surface thereof.
After the 11C rotates and the ink is scraped off by the doctor 18, the washing waste liquid ejected from the washing liquid ejecting nozzle and accumulated in the ink fountain 13 is scraped off by the doctor 18 to the receiving tray 37 in the same manner as the ink. Will be done.

According to Japanese Patent Application No. 7-292206, the jar roll 11C and the doctor 18 rub against each other only when the ink is switched, so that they are hardly worn. The jar roll 11 uses a metal roll, and the doctor 18 also has an edge. Since a hard metal doctor can be used, it is possible to efficiently collect the residual ink and the washing wastewater.

[0008]

Incidentally, mass production of the ink fountain device according to Japanese Patent Application No. 7-292206 was started,
When the assembled ink fountain device was subjected to a practical test, there was no problem at the prototype stage.
The ink accumulated in 3 leaks out from between the partition member 35 on the edge side of the ink fountain 13 and the peripheral surfaces of the rolls 11 and 12, and the crescent-shaped notch 36 of the partition member 35 and the peripheral surface of the rolls 11 and 12. The problem was the adhesion with the adhesive.

Intensive study on this point has revealed that no matter how finely the notch 36 of the partition material and the peripheral surfaces of the rolls 11 and 12 are finished, ink leaks from the gap between them. The cause is a slight displacement that occurs in the process of assembling the ink fountain device by attaching the adjacent rolls and rolls to the frame, that is, even if the adjacent rolls and the peripheral surfaces of the rolls are in close contact (line point contact), 11 ・
Due to the finishing accuracy of the joint between the bearing and the frame of No. 12 and the tightening and tightening of bolts and nuts for tightening and fixing the joint, the positions of the axes of the rolls 11 and 12 are deviated vertically, and Notch 36 of partition material on the peripheral surface
It has been found that even if the peripheral surface of the other roll does not closely adhere to the notch 36 of the partition material even if it adheres finely to the partition roll. In particular, this is because the ink fountain 13
In the case where the fountain roll 12 and the doctor roll 11A are constituted by rolls having different outer diameters, such as the fountain roll 12 and the doctor roll 11A,
It has also been found that it is liable to occur when it is constituted by three or more rolls including B and 11C.

[0010]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to Japanese Patent Application No. 7-29220.
It is an object of the present invention to prevent the ink from leaking out from between the cutout 36 of the partition member and the rolls 11 and 12 even if a mechanical misalignment occurs during the assembly process of the ink fountain device according to Item 6.

[0011]

According to the first aspect of the present invention, a plurality of pots are arranged in parallel with their peripheral surfaces abutting each other.
Roll composed of the rolls 11A, 11B, 11C
Clean the peripheral surface of the pot roll 11A at one end in the array
Butt the roll against the circumference of the roll 12
11A, 11B and 11C and the fountain roll 1
2 to form an ink fountain 13
When rotating the roll 12, all the pots in the roll array
11A, 11B, 11C simultaneously rotate in the same direction
Pot roll selection drive means to drive or keep stationary
And a roll arrangement forming one side edge of the ink fountain 13
Doctor 1 in contact with the peripheral surface of pot roll 11C at one end of the row
8 according to Japanese Patent Application No. 7-292206.
The end of the groove (19) between the rolls is closed with
Partition member constituting the ink fountain (13) Ide (35), b
Formed between each roll, parallel to the axis of the roll
Is the peripheral surface of both left and right rolls constituting the left and right groove walls adjacent sandwiching the groove (19) (20A and 20B, and 20B
20C, 20C and 20D ), having a crescent-shaped concave surface (21) in close contact with the roll, and a side contact surface (23) in close contact with at least the peripheral portion of the side surface (22) of the roll;
And a curved surface (21) depressed in a crescent shape and a side contact surface (2).
3) the peripheral surface of the roll (20) and the side surface of the roll (22)
And bent continuously .

According to a second aspect of the present invention, the peripheral surfaces C and C of the rolls 11 and 12 arranged with their peripheral surfaces in close contact with each other are formed as groove wall surfaces, and the rolls and the rolls are parallel to the axial direction 24 of the rolls. The partition member 35 that forms the ink fountain 13 by closing the end of the groove 19 formed between the peripheral surface 20A of the left and right rolls that forms the left and right groove wall surfaces adjacent to each other with the groove 19 interposed therebetween. 20B ・ 20C ・ 20
Groove partition frame 2 having a crescent-shaped depression 27 corresponding to D
5 with the peripheral surfaces 20A of both rolls adjacent to each other across the groove 19
20b , 20C, and 20D , the recess 27 is fitted and fitted into the groove 19; (b) a groove partition between the side surface 22 of the roll and the outside of the roll in the axial direction of the roll, away from the side surface 22 of the roll. A side frame member 26 is installed so as to face the frame member 25. (c) A groove partition frame member fitted into the groove 19 in the peripheral portion of the side surface of the roll facing the side frame member 26 and the axial direction 24 of the roll. 25, the roll side 22
Without covering the roll peripheral surface C leading to
And the gap between the roll side surface 22 and the groove partition frame 2
The gap between the 5, in the formed mold 29 is closed by the peripheral frame members 28, and forming solidified by injecting partition member material having (d) is flowable.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An ink fountain 13 of the present invention is composed of one vanden roll (12) arranged so that the peripheral surfaces thereof are in close contact with each other.
And three or more rolls including one doctor roll (11A).

The vase roll 1 of the present invention adjacent to the groove 19 therebetween.
You can have me different from the outer diameter of the 1A and the fountain roll 12
No.

The side contact surface 23, to continue pray to the bottom side of the groove 19 more than the center line passing through the axis 24A · 24B · 24C · 24D of the left and right roll adjacent across the groove 19
Good .

[0016] The partition member material, child using the resin composition
You can do it .

As the partition material , a metal composition having a lower thermal melting point than the material forming the rolls 11 and 12 and the formwork 29 can be used .

[0018] The partition member material may be used an inorganic composition having a hydrating reactivity.

As described above, the "partitioning material having fluidity" referred to in the present invention is a liquid composition having fluidity at room temperature containing a solvent or dispersant such as water, an organic solvent or a plasticizer. In addition to the hot-melt composition that is heated and melted and has fluidity, hot-melt resin powder or solder powder that can be injected and then heat-melted and solidified, or a hardener is injected It may be a powdered composition such as a cement powder that can be solidified. Formwork 29
The partition material injected into the partition material may be solidified and then removed, or may be used as the outer surface material of the partition material 35 without removing it. When the mold frame 29 is used as the outer surface material of the partitioning material without demolding, injection molding or blow molding is performed using a synthetic resin composition having a chemical resistance, particularly an organic solvent resistance, such as a polyester resin or a polyolefin resin. It is preferable to form the mold frame 29 integrally with the groove partitioning frame material 25, the side frame material 26, and the peripheral frame material 28 by an ordinary method of plastic molding such as.

As the resin composition to be injected into the mold 29,
An epoxy resin composition, an unsaturated polyester resin composition or an alkyd resin composition containing a curing agent can be molded under no pressure, and it is preferable to use a non-shrinkable resin in the solidification process. The inorganic composition to be poured into the formwork 29 is prepared by mixing hydrated cement or gypsum as a main material, and mixing it with sand or other particulate aggregate, and if necessary, water-dispersible ethylene vinyl acetate resin or the like. The emulsion / latex resin composition described above may be blended.

When the partition material is poured into the formwork 29 in consideration of the slip on the contact surface between the partition member 35 and the rolls 11 and 12, the peripheral surface C and the side surface 22 of the roll serving as the contact surface are formed on the mold surface 29. Form a coating film such as oils and waxes, lubricants and release agents,
Alternatively, a curved surface 21 or a side contact surface 2 is adhered to a partition material.
3 is formed by peeling a film, cloth or other sheet piece to be formed on the peripheral surface C of the roll or the side surface 22 of the roll appearing in the formwork 29 and injecting a partition material. Curved surface 21 of partition member 35 and side contact surface 23
It is good to transfer to. The resin composition or the inorganic composition to be injected into the mold 29 may be blended with fibers or yarns such as glass fibers, carbon fibers, and metal fibers. In particular, a filler having a large specific gravity, such as a metal powder such as barium sulfate, nickel, stainless steel, or lead, is added to the resin composition injected into the mold 29.
It is preferable that a ceramic powder is blended to give a sense of weight to the partition material, so that the partition material 35 is heavily mounted on the rolls 11 and 12.

A partition material can be injected into the mold 29 after a core material such as a wire or a fiber thread is incorporated into the mold, such as a reinforcing bar of a concrete product. Also, formwork 2
A jig necessary to fix the partition member 35 to the ink fountain device main body frame is incorporated in the part 9, and the partition member 35 can be formed integrally with the jig. When using as the outer surface material of the partition member 35 without removing the mold frame 29 after molding,
A jig necessary for fixing the partition member 35 to the main body frame of the ink fountain device is attached to the formwork 29 in advance. In any case these, the partition member material into a gap formed between the incorporating core or jig and the roll peripheral surface C and roll side 22 in the mold 29 is injected, the peripheral surface C and roll of the roll Side 2 of
The crescent-shaped curved surface 21 and the side contact surface 23 of the partition member may be formed so as to capture the shape 2.

As the metal composition to be poured into the mold 29, a metal composition containing solder and other lead, which can be molded by heating and melting is used.

[0024]

The partitioning material 35 according to the present invention can be used for the ink fountain 13 which is assembled with the peripheral surfaces thereof closely contacting each other and supported by the frame.
The peripheral surface 20 and the side surface 22 of a plurality of rolls arranged in
The partitioning material is injected into the mold 29 exposed inside to be molded. For this reason, the ink fountain 13 cannot be assembled by accurately aligning the axis 24 of the roll with the predetermined position, and a displacement g occurs between the predetermined position and the axis 24.
.12 between the side surfaces of adjacent rolls 12 shifted in the width direction
Even if a very small step d occurs in A.22B, the crescent-shaped curved surface 21 of the partition material is on the peripheral surface 20 of the roll, and the side contact surface 23 of the partition material is the side surface 22A of any of the adjacent rolls.
22B will surely adhere perfectly.
As a result, even ink prepared with low viscosity does not leak from the ink fountain.

Therefore, according to the present invention, there is provided an ink fountain 13 composed of rolls 11 and 12 having different outer diameters which are likely to be displaced during the assembling process, and three or more rolls 11A and 11
It is particularly effective for the ink fountain 13 constituted by B, 11C and 12.

Further, in the ink fountain 13 of the present invention, the partition member adheres not only to the peripheral surface 20 of the roll but also to the side surface 22 of the roll, and a corner 30 extending from the peripheral surface 20 to the side surface 22 is formed by the crescent of the partition member. It is covered with a curved surface 21 and a side contact surface 23. The cleaning of the ink fountain 13 is performed by rotating the rolls 11 and 12, and the ink attached to the side surface 22 of the rotating roll moves to the peripheral side (20 and 30) by centrifugal force. Even if the ink easily oozes out from a very small gap formed between the crescent-shaped curved surface 21 of the partition member and the peripheral surface 20 of the roll due to abrasion, the side contact surface 23 of the partition plate and the side surface 22 of the roll can be formed. The ink does not seep into the middle, and the ink does not scatter around the corner 30 of the roll due to centrifugal force.

The side contact surface 23 of the partition member is
Axis 24A, 24B of the left and right roll adjacent across the 9-
It is possible to continue pray to the bottom side of the groove 19 more than the center line passing through the 24C · 24D, pointed groove bottom 3 of the circumferential surface 20A · 20B of adjacent rolls are to line contact point contact
It is also Ru can be effectively prevented the 1 and the leakage of the ink from between the partition member 35.

The peripheral surface of a roll that is exposed inside the mold when forming the partition material and forms a part of the mold 29.
C and the side surface 22 are portions that are finely finished by polishing while rotating the rolls 11 and 12, and the roll core 24 when assembled in the ink fountain 13.
Even if the side surface 22 is displaced from the predetermined position, the peripheral surface 20 and the side surface 22 do not swing in the rotating state of the rolls 11 and 12, so that the partition member 35 of the present invention that can be cast into the formwork 29 is formed. Even if the rolls 11 and 12 are completely adhered to the peripheral surface 20 and the side surface 22 of the roll, the rotation of the rolls 11 and 12 is not hindered by the partition member 35.

Thus, according to the present invention, the practicality of the ink fountain device of a printing press according to Japanese Patent Application No. 7-292206 shown in FIG. 4 was established, and it became possible to mass-produce it.

[Brief description of the drawings]

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

FIG. 2 is a side view of the ink fountain device according to the present invention.

FIG. 3 is an end bottom view of the ink fountain device according to the present invention.

FIG. 4 is a perspective view of an ink fountain device to which the present invention is applied.

[Explanation of symbols]

REFERENCE SIGNS LIST 11 pot roll 12 fountain roll 13 ink pot 14 support shaft 15 gear 16 intermediary gear 17 motor 18 doctor 19 groove C / 20 peripheral surface 21 curved surface 22 side surface 23 side contact surface 24 shaft core 25 groove partition frame material 26 side frame material 27 Depression 28 Peripheral frame material 29 Formwork 30 Corner 31 Groove bottom 35 Partition material 36 Notch 37 Receiving tray 38 Air cylinder 39 Support member 40 Arm

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Nobuyuki Baba 1-Technoroll Co., Ltd., 1914 Ikeda-shi, Izumi-shi, Osaka (56) References JP-A-6-135117 (JP, A) JP-A-57- 120442 (JP, A) JP-A-6-286113 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B41F 31/04 B41F 35/04

Claims (2)

(57) [Claims] 1. (a) It is arranged in parallel with the peripheral surfaces facing each other.
By a plurality of fountain roll 11A · 11B · 11C which
Of the vase roll 11A at one end in the roll array
Abut the peripheral surface to the peripheral surface of the fountain roll 12, and
Peripheral surface of Luo double several vases roll 11A · 11B · 11C and off
The ink fountain 1 surrounded by the peripheral surface of the roll 10
3 constitute a roll arrangement during rotation of the fountain roll 12
All pot rolls 11A, 11B, 11C in a row
Same way and driven to rotate in direction to, or kept stationary, Tsuboro
Provided Lumpur selection drive means, one side of the side edges of Lee Nki pot 13
On the peripheral surface of the pot roll 11C at one end of the roll array to constitute
To a printing press ink fountain device with a doctor 18 in contact
(B) Close the end of the groove (19) between the rolls and
The partitioning material (35 ) that constitutes (13) is the shaft center of the roll.
Parallel to the direction, a groove formed between the rolls and the roll (1
9) The peripheral surfaces (20A and 20B, 20B and 20C, 20)
C and 20D ) Curved surface (2)
1), and, at least to have a side abutment surface in close contact with the peripheral edge (23), a side abutment surface (c) a curved surface recessed crescent (21) of the side surface of the roll (22)
(23) is the peripheral surface (20) of the roll and the side surface (2) of the roll.
2) An ink fountain device for a printing press, wherein the ink fountain device is bent in close contact with (2) . 2. The rolls (11, 12), which are arranged in close contact with each other, have the circumferential surfaces (20A, 20B) as groove wall surfaces, and are disposed between the rolls in parallel with the axial direction (24) of the rolls. The partition member (35) forming the ink fountain (13) by closing the end of the groove (19) formed on the left and right sides forming the left and right groove wall surfaces adjacent to each other with the groove (19) interposed therebetween. Groove frame (2) having a crescent-shaped depression (27) fitted to the peripheral surface (20A / 20B) of the roll of (2)
5) is fitted into the groove (19) by aligning the depression (27) with the peripheral surfaces (20A and 20B) of both rolls adjacent to each other across the groove (19), and (b) in the axial direction of the roll. A side frame member (26) is installed facing the side surface (22) of the roll and the groove partition frame member (25) at a position away from the side surface (22) of the roll toward the outside of the roll, and (c) the side frame. The groove (1) is formed in the peripheral portion of the side surface of the roll facing the material (26) and in the axial direction (24) of the roll.
9) Roll peripheral surface (20C) extending from the recess (27) of the groove partition member (25) fitted into the roll to the side surface (22) of the roll.
Without covering the gap, the gap between the side frame material (26) and the side face (22) of the roll and the gap between the groove partition frame material (25) are closed by the peripheral frame material (28). (D) A method of manufacturing an ink fountain device for a printing press, comprising: (d) injecting and solidifying a fluid partition material into a mold (29) to be formed.