JPH0632036U - Ink roller cleaning device - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to wash the entire ink roller including the doctor roller at once. [Structure] The support center (18) of the ink transfer roller (7) by the swing arm (8) and the rotation center (15) of the ink transfer roller (7) are deviated and the swing arm (8) is The distance between the swing center (11) and the rotation center (15) of the ink transfer roller (7) can be changed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cleaning device for an ink roller in an offset printing machine.

[0002]

[Background of device]

 In an offset printing machine, the ink stored in the ink device consisting of an ink blade and a doctor roller is sent from the doctor roller to the vibrator roller of the ink roller group by an appropriate amount by an ink transfer roller which is oscillated. Then, the ink is repeatedly cleaved and transferred by an ink roller group including a large number of gold rollers and rubber rollers, and is supplied to the plate surface for printing.

By the way, when one printing operation is completed, the next printing operation cannot be started unless not only the doctor roller of the inking device but also the ink roller group is completely washed. There is a demand for such an ink roller cleaning operation to be as simple as possible due to lack of manpower.

[0004]

[Prior art]

 Since the ink roller group consisting of a large number of gold rollers and rubber rollers are in contact with each other, simply spraying the cleaning liquid on the uppermost roller and rotating it causes the cleaning liquid and the ink dirty liquid to flow sequentially between the rollers. Finally, it can be collected in the waste liquid tank and the cleaning operation can be performed easily.

However, since the doctor roller of the inking device is isolated from the ink roller group, it is necessary to manually wipe the doctor roller to perform the ink cleaning work. Such manual cleaning work streamlines the printing work. It was unsuitable.

[0006]

[Problems to be solved by the device]

 The present invention has been made in view of the above problems, and provides an improved ink roller cleaning device, and an object thereof is to enable cleaning of the entire ink roller including the doctor roller at one time.

[0007]

[Means for Solving the Problems]

 To this end, the ink roller cleaning device according to the present invention comprises a support center (18) for the ink transfer roller (7) by means of a swing arm (8) and a rotation center (15) for the ink transfer roller (7). In addition to being offset, the distance between the swing center (11) of the swing arm (8) and the rotation center (15) of the ink transfer roller (7) can be changed.

[0008]

[Action]

 During the cleaning operation, the rotation center (15) of the ink transfer roller (7) deviated from the support center (18) of the swing arm (8) is moved to move the swing center (11) of the swing arm (8). ) And the rotation center (15) of the ink transfer roller (7) can be shortened, the ink transfer roller (7) is in contact with both the doctor roller (1) and the vibrator roller (5), The flow path of the cleaning liquid is formed up to the doctor roller (1), and all the ink rollers including this doctor roller (1) can be collectively cleaned.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of an ink roller cleaning device according to the present invention, showing a state at the time of printing, FIG. 2 also showing a state at the time of cleaning, and FIG. FIG. 4 is a side explanatory view showing the function of the device of the present invention, showing a state at the time of printing, FIG. 4 also shows a state at the time of cleaning, and FIG. It is a schematic diagram showing.

In the printing state shown in FIGS. 1 and 3, the doctor blade (1) made of metal, which is rotated at a speed controllable speed, has the ink blade (3) supported so as to be rotatable around the shaft (2). ) And the like constitute an inking device, and the ink (4) is stored in this inking device. In addition, the metal vibrator roller (5), which is at the forefront of the ink roller group consisting of a large number of gold rollers and rubber rollers shown in FIG. 5, starts splitting and transfer after receiving the ink, and finally the plate. Attach to the plate of the body (6).

The rubber ink transfer roller (7) transfers the ink by oscillating between the doctor roller (1) and the vibrator roller (5). There is no simultaneous contact with the rollers (1), (5). Therefore, as shown in FIGS. 4 and 5, during cleaning, the ink transfer roller (7) is brought into contact with both the doctor roller (1) and the vibrator roller (5) so that the flow path of the cleaning liquid is changed to the doctor roller (1). The purpose of the proposed device is to expand to all ink rollers including.

It is the swing arm (8) that swings the ink transfer roller (7), and the swing arm (8) swings the swing shaft (10) supported on the side wall (9) of the printing press. And, it is rocked timely by a cam mechanism (not shown). The reference numeral (11) indicates the swing center of the swing arm (10).

The roller surface (12) of the ink transfer roller (7) is rotatably supported by the roller shaft (14) via the bearing (13), and the reference numeral (15) indicates the center of rotation. The axis is shown. However, the roller shaft (14) is not directly attached to the swing arm (8), but is provided with a support pin (16) and a bearing (17) having a center at a position eccentric from the rotation center (15). It is attached to the swing arm (8) via the. In other words, the support center (18) which is the center of the support pin (16) and the rotation center (15) of the ink transfer roller (7) are eccentric.

Further, a torsion spring (19) is wound around the outer circumference of the support pin (16), and one end of the torsion spring (19) sandwiches the rotation center (15) with the support center (18). ) To the end of the support pin (16) on the side opposite the roller shaft (14) and the other end is closer to the swing center (11) than the support center (18). They are attached to the pins (20) that are erected in the middle part of each. Therefore, it can be said that the torsion bar (19) imparts a torsional torque toward the swing center (11) to the roller shaft (14) and further to the ink transfer roller (7).

Further, a locking disk (22) having a notch (21) is fixedly attached to the end of the support pin (16) on the side of the swing arm (8), while the swing arm ( On the side of the bracket (23) on the side 8), a locking tool (25) urged by a spring (24) is arranged so as to engage with a notch (21) of the locking disk (22). .

Next, the operation will be described. When the knob of the locking member (25) is pulled against the force of the spring (24) during cleaning, the locking disk (22) engages with the notch (21). Is released, the support pin (16) becomes free, and the support pin (16) and the roller shaft (14) are rotated by the torsion spring (19). At this time, the torsion spring (19) imparts a torsion torque toward the swing center (11) to the roller shaft (14) and further to the ink transfer roller (7), so that the rotation center (15) and the swing center ( 11), the ink transfer roller (7) moves so that the distance from it becomes shorter as shown in FIG. 2, and as a result, the ink transfer roller (7) becomes the doctor roller (1) and the vibrator as shown in FIG. It will contact both rollers (5). Then, as shown in Fig. 5, all ink rollers are connected to each other. Therefore, the cleaning liquid is sprayed in the vicinity of the doctor roller (1) and the ink transfer roller (7) as shown by the arrow, and all ink rollers are removed. Rotate. At this time, the cleaning liquid and the contaminated liquid flow between the ink rollers and are finally collected in the waste liquid tank (26) to complete the cleaning operation. In order to return the cleaning roller arrangement shown in FIG. 2 to the printing roller arrangement shown in FIG. 1, a tool (a simple bar may be used) is inserted into the tool hole (27) at the end of the roller shaft (14). When the roller shaft (14) is rotated in the reverse direction against the force of the torsion spring (19), the locking device (25) urged by the spring (24) is again engaged with the notch (21). Then, the return is completed.

[0017]

[Effect of device]

 According to the ink roller cleaning device of the present invention, all the ink rollers including the doctor roller can be collectively cleaned, so that the cleaning operation can be speeded up and rationalized.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of an ink roller cleaning device according to the present invention, showing a state during printing.

FIG. 2 similarly shows a state at the time of cleaning.

FIG. 3 is a side view illustrating the function of the device of the present invention, showing a state during printing.

FIG. 4 also shows a state at the time of cleaning.

FIG. 5 is a schematic diagram showing a flow path of a cleaning liquid or the like during cleaning.

[Explanation of symbols]

 1 Doctor Roller 5 Vibrator Roller 7 Ink Transfer Roller 8 Swing Arm 10 Swing Shaft 11 Swing Center 14 Roller Shaft 15 Rotation Center 16 Support Pin 18 Support Center 19 Torsion Spring 21 Notch 22 Locking Disc 24 Spring 25 Locking Tool 27 Tool hole

Claims (1)

[Scope of utility model registration request] 1. An ink transfer roller (7) supported by a swing arm (8) is swung between a doctor roller (1) of an inking device and a vibrator roller (5) of an ink roller group to transfer ink. In the device, the supporting center (18) of the ink transfer roller (7) by the swing arm (8) and the rotation center (15) of the ink transfer roller (7) are deviated and the swing arm is A cleaning device for an ink roller, wherein the distance between the swing center (11) of (8) and the rotation center (15) can be set and changed.