JP4641352B2 - Inkwell - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ink fountain for an offset printing press.
[0002]
[Prior art]
As shown in FIG. 4, the ink fountain of a conventional offset printing machine includes a single ink blade 1, an ink discharge roller 2, and a plurality of adjusting screws 3. In the offset printing machine, the ink discharge roller 2, the ink blade 1, These gaps are changed by a plurality of adjusting screws 3 so that the ink film thickness in the printing width direction can be adjusted.
[0003]
In the case of offset printing, a small amount of ink is discharged from the ink fountain by rotation of an ink discharge roller, which is transferred and carried by a roller, which is equalized by a number of repeated rollers, and supplied to the printing plate through an attaching roller.
[0004]
Cleaning the ink fountain as described above stops the printing press and, in some cases, roughly removes the ink in the ink fountain while operating the printing press, and then wipes the ink adhering to the ink fountain with a waste cloth. is doing. Depending on the model, there is a structure in which the bottom plate and the side plate can be removed, and a film that can be washed by attaching the film to a basket and removing the film. However, if the washing is not completed, the next work cannot be started.
[0005]
In addition, the cleaning of the ink fountain is a difficult operation because it must be performed carefully so that the color of the ink to be used next does not mix with the color of the ink used previously.
[0006]
[Problems to be solved by the invention]
An object of the present invention is to provide an ink fountain in which an ink blade can be easily replaced.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 solves the above-mentioned problems of the invention, and is an ink fountain comprising an ink blade, an ink discharge roller, and a plurality of adjusting screws, wherein the plurality of ink blades are arranged around a central axis. Ink blade groups are arranged on each peripheral surface of a polygonal cylinder centering on the central axis, and each of the ink blades is provided with an adjusting screw so that the gap between the ink blade and the ink discharge roller can be adjusted. and which features a Rukoto body supporting each adjustment screw is fixed to the central axis through the connecting portion.
[0008]
In the present invention, each ink blade of the ink blade group is preferably independent of each other, and each ink blade is configured to be remotely operable with an adjusting screw with a motor.
[0009]
The ink fountain according to the present invention removes the ink remaining in the ink fountain, cleans the inner wall of the ink fountain and the ink discharge roller, and then draws out the ink blade group in the axial direction to separate the ink blade from the ink discharge roller. Next, the ink blade group is rotated and moved so that the unused ink blade is opposed to the ink discharge roller, and the time required for cleaning the ink blade, which is particularly dirty, can be shortened so that the next printing operation can be started. can do.
[0010]
In addition, the ink fountain according to the present invention removes the ink remaining in the ink fountain, and then moves the ink blade group in a direction perpendicular to the central axis so as to move the ink blade away from the ink discharge roller. The unused ink blade is opposed to the ink discharge roller by rotating and moving, and the time required for cleaning the particularly dirty ink blade can be shortened so that the next printing operation can be started. .
[0011]
As described above, when the ink fountain of the present invention is used, the ink blade group is rotated and moved after the printing is completed, and the unused ink blade is opposed to the ink discharge roller, and only the time required for cleaning the ink blade particularly severely stained is used. It can be shortened and the next printing operation can be started.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, an example of the present invention will be specifically described.
FIG. 1 shows the ink fountain of the present invention. The ink fountain includes an ink blade group composed of three ink blades 11 a, 11 b, and 11 c and an ink discharge roller 13 disposed on each peripheral surface of a triangular cylinder centering on the central axis 12 around the central axis 12. In the ink fountain according to the present invention, the ink blade group is configured to be movable with respect to the ink discharge roller 13 in the direction of the central axis 12, and the ink in the ink fountain is removed, and the ink discharge roller and the inner wall of the ink fountain. The ink blade group is moved in the direction of the central axis 12 with respect to the ink discharge roller 13 to separate the ink blade of the ink blade group from the ink discharge roller 13, and the ink blade group is rotated and then used. The ink blade can be replaced by moving the ink blade to an angular position corresponding to the ink discharge roller and returning the ink blade to the position facing the ink discharge roller 13 in the direction of the central axis 12 at that position. Alternatively, the ink fountain according to the present invention is configured such that the ink blade group can be moved in a direction perpendicular to the central axis so as to be separated from the ink discharge roller, and the ink blade is perpendicular to the central axis. The ink blade group may be moved so as to be separated from the ink discharge roller and then rotated to allow the unused ink blade to face the ink discharge roller.
[0013]
FIG. 2 shows the ink blade group of the ink fountain shown in FIG. 1 in more detail. Each of the ink blades 11a, 11b, and 11c is provided with adjusting screws 14a, 14b, and 14c so that the gap between the ink blade and the ink discharge roller can be adjusted. The adjusting screw is remotely operated by a motor (not shown). A slit 15 is inserted between the ink blades 11a, 11b, and 11c so that the gap with the ink discharge roller can be adjusted without being affected by other ink blades. Further, the main body 16 that supports each adjusting screw is fixed to the central shaft 12 via a connecting portion 17 .
[0014]
FIG. 3 shows another embodiment of the present invention. Four ink blades 11 a, 11 b, 11 c, 11 d are arranged around each central axis 12 on each week surface of a square cylinder centering on the central axis 12, and the ink blade group is moved in the direction of the central axis 12 to the ink discharge roller 13. The ink blades of the ink blade group are separated from the ink discharge roller 13 and rotated, and the ink blade to be used next is moved to an angular position corresponding to the ink discharge roller. The ink blade can be exchanged by returning it to the position facing the ink discharge roller 13 in the direction. In this case, it can be used properly as an ink blade dedicated to each of four colors of yellow, red, indigo and black. As a result, cleaning can be easily performed and preparation time can be reduced.
[0015]
【The invention's effect】
As described above in detail, the ink fountain according to the present invention is an ink fountain including an ink blade, an ink discharge roller, and a plurality of adjusting screws, and the plurality of ink blades are centered around the central axis. Ink blade groups arranged on each peripheral surface of the polygonal cylinder, and each of the ink blades is provided with an adjusting screw, and is configured so that the gap between the ink blade and the ink discharge roller can be adjusted. body for supporting the adjustment screw is fixed to the central axis through the connecting portion Runode, unused ink blade is rotated moving the ink blade group to face the ink fountain roller after accordance Invite print end to the ink fountain In particular, it can be configured so that the time required for cleaning the ink blade, which is particularly dirty, can be shortened and the next printing operation can be started. The blade cleaning can be off-line setup of reducing the preparation time.
[0016]
Further, by determining the color of the ink to be used for each ink blade and using it as an ink blade dedicated to each color, the cleaning can be completed easily, and the preparation time can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic view of an ink fountain of the present invention.
FIG. 2 is an explanatory diagram of a main part of the ink fountain of the present invention.
FIG. 3 is a schematic view showing another embodiment of the ink fountain of the present invention.
FIG. 4 is a schematic diagram of a conventional ink fountain.
[Explanation of symbols]
11a, 11b, 11c Ink blade 12 Center shaft 13 Ink discharge rollers 14a, 14b, 14c Adjustment screw 15 Slit 16 Body 17 Connecting portion

Claims (4)

An ink fountain comprising an ink blade, an ink discharge roller, and a plurality of adjusting screws, wherein a plurality of ink blades are arranged around each central surface of a polygonal cylinder around the central axis Each of the ink blades is equipped with an adjustment screw so that the gap between the ink blade and the ink discharge roller can be adjusted, and the main body that supports each adjustment screw is fixed to the central axis via a connecting part to have the ink fountain, characterized in Rukoto.   2. The ink fountain according to claim 1, wherein each ink blade is configured to be remotely controlled by an adjusting screw with a motor. 2. The ink blade group according to claim 1, wherein the ink blade group is drawn out in the axial direction of the central axis so that the ink blade is separated from the ink discharge roller, and the ink blade group can be rotated. The ink fountain described. The ink blade group is moved so as to be separated from the ink discharge roller in a direction perpendicular to the central axis, and the ink blade group can be rotated and moved. Item 2. The ink fountain according to Item 1.

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