JPH0760950A - Ink feeder of corrugated board printing machine - Google Patents

Abstract

PURPOSE:To enable transfer or stop of transfer in the axial direction of an oscillating roll to be selected by a method wherein in an ink feeder of a corrugated board printing machine an electromagnetic clutch is interposed in a rotation transmitting route to a crank device. CONSTITUTION:A shaft 26a is connected to a worm 3 with an electromagnetic clutch 71. By conducting a current to the electromagnetic clutch 71, rotation of a driving plate 71 is transmitted to the worm 3 via a driven plate 72 and a sleeve 73. When conduction of a current is broken, rotation of the driving plate 71 is not transmitted to the driven plate 72 and the sleeve 73, and the worm 3 is not rotated. When ink must be thinned by kneading because of high viscosity of ink, the electromagnetic clutch 71 is thrown in, and oscillating rolls 15, 17 are slid in the axial direction in a reciprocating manner. When low viscous ink is used, the electromagnetic clutch 71 is disengaged, and the sliding of the oscillating rolls 15, 17 in the axial direction is stopped.

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 for a corrugated board printing machine.

[0002]

2. Description of the Related Art Corrugated board printers are classified into a Prislo type which uses high-viscosity ink and a flexo type which uses low-viscosity ink. Ink for Prislo has the drawback that the ink dries slowly, but the printed surface is glossy and the commercial value of the printed matter is high. Flexographic ink has the advantage that the ink dries quickly, but the printed surface is not glossy and the commercial value of the printed matter is low.

2, 3, and 4 show an ink supply device of a Prislo type corrugated board printing machine. The first roll (11) to the eighth roll (1) which are arranged by contacting adjacent rolls with each other (1)
8) Roll row (1), 5th roll (15) and 7th roll
(17) is an oscillating roll that is slidably reciprocated in the axial direction, and the axis of the oscillating roll (15) (17)
A crank device (4) for axially reciprocatingly slidingly driving the oscillating rolls (15) and (17) is connected to (15a) and (17a).

The crank device (4) has an oscillating roll (1
5) Arms (43) and (44) project from both ends of the rotating shaft (41) that is supported orthogonally to the shafts (15a) and (17a) of (17).
(15a) and (17a) are connected by the connecting members (5) and (5). Install the worm gear (31) with the key (42) secured to the rotary shaft (41) into the gear train.
It meshes with a worm (3) provided coaxially with one gear (26) of (2).

Ink is supplied to the roll (21) at the upstream end by an ink supply device (not shown) such as an ink jet type ink supply device, and a gear train (2) is rotationally driven by a drive gear (not shown). Then, the roll rows (1) are simultaneously rotated, the ink is gradually transferred to the rolls on the downstream side, and the oscillating rolls (15)
While rotating, the crank device (4) reciprocally slides in the axial direction by the crank device (4) to transfer the ink to the roller on the downstream side while kneading and spreading the ink with the counterpart roll. As described above, by kneading the ink with the oscillating rolls (15) and (17), the high-viscosity Prislo ink can be evenly attached to the plate cylinder.

[0006]

SUMMARY OF THE INVENTION A glycol-based ink has been developed which has properties of quick drying, which approximates flexo ink, and gloss which is close to that of a Prislo ink. Printing is done with a die-printing machine. The viscosity of glycol ink is
It is as low as that of flexo ink, and it is not necessary to roll the ink by oscillating rolls (15) (17).

However, the Prislo printing machine always includes the oscillating rolls (15) and (17), and although it is not necessary, the oscillating rolls (15) and (17) slide in the axial direction and the power is reduced. Waste is generated, and the oscillating rolls (15) and (17) and the mating rolls in contact with the rolls are worn. If the oscillating rolls (15) and (17) are replaced by rolls that do not slide in the axial direction but can only rotate, printing with Prislo ink cannot be performed.

According to the present invention, when using the Prislo ink, the oscillating rolls (15) and (17) can reciprocally slide in the axial direction while rotating in the same manner as in the prior art to knead and spread the glycol-based ink. The purpose of the present invention is to clarify an ink supply device of a corrugated board printing machine that can stop the axial slide of the oscillating rolls (15) and (17) when used and can solve the above problems.

[0009]

An ink supply device for a corrugated board printing machine according to the present invention is provided with adjacent rolls in contact with each other, and one or a plurality of rolls are axially reciprocally slidable oscillating rolls (15) (17). ), And the roll train in which the oscillating rolls (15) and (17) slide in the axial direction by the crank device (4) that is operated by the rotation drive system of the rolls
In contrast to (1), the plate cylinder is brought into contact with the rolls on the downstream side of the roll row (1), and the rotation of each roll and the axial reciprocating movement of the oscillating rolls cause the plates to pass through the intermediate rolls from the upstream rolls. In an ink supply device of a corrugated board printing machine for supplying ink to a cylinder, an electromagnetic clutch (71) is interposed in a rotation transmission path to a crank device (4), and axial movement of oscillating rolls (15) (17), You can choose to stop moving.

[0010]

[Action and effect] If the viscosity of the ink used is high, insert the electromagnetic clutch (71) and slide the oscillating rolls (15) (17) back and forth in the axial direction to knead the ink and remove the ink with a low viscosity. When used, the electromagnetic clutch (71) can be disengaged to stop axial sliding of the oscillating rolls (15) (17).

Therefore, even when using an ink having a low viscosity and not required to be kneaded, it is possible to eliminate the waste of axial reciprocating sliding of the oscillating rolls (15) and (17). The axial slide driving force of the oscillating rolls (15) (17) is obtained from a rotary drive system that rotationally drives the rolls,
An electromagnetic clutch (71) is interposed in this rotation transmission system, and when the electromagnetic clutch (71) is turned on and off, the oscillating roll (15)
Since the movement in the axial direction of (17) can be selected, the configuration is simple.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS.
The first roll (1
Roll row consisting of 8 rolls from 1) to 8th roll (18)
Of the (1), the odd numbered rolls are the first roll (11) and the third roll.
The roll (13), the fifth roll (15), and the seventh roll (17) are forcibly rotated by the gear train (2).

The second, which is an even numbered roll of the roll row (1)
The roll (12), the fourth roll (14), the sixth roll (16), and the eighth roll (18) are pressed and urged by the adjoining opponent rolls and are driven to rotate. The fifth roll (15) and the seventh roll (1
7) is an oscillating roll that is slidably reciprocated in the axial direction, and the shaft (1) of the oscillating roll (15) (17) is
A crank device (4) for axially reciprocatingly slidingly driving the oscillating rolls (15) and (17) is connected to 5a and 17a.

The clutch device (4) is orthogonal to the shaft by means of a bracket (32) fixed to the frame (6) between the ends of the shafts (15a) and (17a) as in the conventional example shown in FIG. Then the rotation axis
Bearing (41) and arms (43) (44) at both ends of the shaft, orthogonal to the shaft.
Are protruded in mutually opposite directions, and rollers (45) and (45) are protruded from the tips of the arms (43) and (44).

Each roller (45) and the shaft (15a) (17a) are connected members
Connected by (5). The connecting member (5) is a mounting piece (52) that is rotatably attached to the tip of the shaft (15a) (17a), the shaft (15a) (17a)
Has a guide groove (51) opened orthogonally to, and a guide hole (53) slidably fitted in a guide shaft (61) protruding from the frame (6) in parallel with the shafts (15a) and (17a). Guide groove (51) (51)
The rollers (45) and (45) of the arms (43) and (44) are fitted in the above. The worm gear (31) is locked to the key (42) at the center of the rotating shaft (41).

A fifth gear (25) attached to the shafts (15a) (17a),
A sixth gear (26) located between the seventh gears (27) and meshing with both gears (25) (27) is rotatably arranged on the frame (6). 6th gear (26) and oscillating roll (15) (17) gear
The other two gears (24) and (28) meshing with (25) and (27) have wide tooth widths corresponding to the axial reciprocating slide strokes of the oscillating rolls (15) and (17). . 6th gear (26)
A worm (3) meshing with the worm gear (31) is rotatably fitted on the shaft (26a) with respect to the shaft (26a).

The shaft (26a) and the worm (3) are connected to the electromagnetic clutch (7
1), the electromagnetic clutch (71) is attached to the tip of the shaft (26a), and it fits on the shaft (26a).
The sleeve (73) that can rotate together with (3) is the electromagnetic clutch (71).
Is connected to. An electromagnetic brake (72) is provided corresponding to the electromagnetic clutch (71). When the electromagnetic clutch (71) is energized, the sleeve (73) is magnetically attached to the clutch and rotates,
When the electromagnetic brake (72) is energized, it is magnetically attached to the brake and stops. The electromagnetic clutch (71) and the electromagnetic brake (72) are electrically interlocked so that they are not energized at the same time.

The shaft (26a) and the worm (3) are connected to the electromagnetic clutch (7
Connected by 1). Clutch at the tip of the shaft (26a)
The drive plate (71) of (71) is attached to the shaft (26a) so as to be able to rotate integrally therewith, and the sleeve (73) and the driven plate of the clutch (7) that are integrally rotatable with the worm (3) are mounted on the shaft (26a). (72) is deployed,
When the electromagnetic clutch (71) is energized, the rotation of the drive plate (71) is
When the power is cut off by being transmitted to the worm (3) through the driven plate (72) and the sleeve (73), the rotation of the drive plate (71) is rotated by the driven plate (7).
The worm (3) does not rotate because it is not transmitted to the 2) and the sleeve (73).

However, when the ink to be used has a high viscosity and it is necessary to spread the ink, the electromagnetic clutch (71)
And slide the oscillating rolls (15) (17) back and forth in the axial direction.When using low viscosity ink, turn off the electromagnetic clutch (71) and slide the oscillating rolls (15) (17) in the axial direction. Can be stopped. Therefore, even when using an ink having a low viscosity and not required to be kneaded, it is possible to eliminate the waste of the oscillating rolls (15) and (17) sliding back and forth in the axial direction.

The slide driving force in the axial direction of the oscillating rolls (15) (17) is obtained from a rotary drive system that rotationally drives the rolls, and an electromagnetic clutch (71) is interposed in this rotary transmission system, Since the axial movement of the oscillating rolls (15) and (17) can be selected by turning the clutch (71) on and off, the structure is simple. The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope of the claims.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an ink supply device of the present invention.

FIG. 2 is an explanatory diagram of a roll train and a gear train.

FIG. 3 is a sectional view of a crank device.

FIG. 4 is a front view of a crank device.

[Explanation of symbols]

 (1) Roll train (2) Gear train (4) Crank device (71) Electromagnetic clutch

Claims (1)

[Claims] 1. Adjacent rolls are arranged in contact with each other, and one or a plurality of rolls are oscillating rolls (15) (17) that can slide back and forth in the axial direction, and are operated by input from a rotary drive system of the rolls. With respect to the roll train (1) in which the oscillating rolls (15) (17) are slidably driven in the axial direction by the crank device (4), the plate cylinder is brought into contact with the rolls on the downstream side of the roll train (1), In the ink supply device of the corrugated board printing machine that supplies ink to the plate cylinder from the upstream roll through the oscillating rolls (15) (17) by the rotation of the oscillating roll and the axial reciprocating movement of the oscillating roll, the crank device (4)
An electromagnetic clutch (71) is interposed in the rotation transmission path for
An ink supply device for a corrugated board printing machine that allows you to select axial movement and stop movement of the oscillating rolls (15) (17).