JPH0631903A - Sheet feed press - Google Patents

Abstract

PURPOSE:To easily perform final fine adjustment of the feeding amount of ink at each sheet-feed press controlled in a group. CONSTITUTION:In sheet-feed presses controlled in a group, an operating board 9 which is freely laid up and down is provided in a paper discharge part 7. An adjusting means 10 for adjusting the feeding amount of ink is set in the operating board 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the control of sheet-fed printing presses under group control.

[0002]

BACKGROUND OF THE INVENTION In sheet-fed printing presses, paper registration,
Good printing can be performed only after the printing pressure, the adjustment of the equipment corresponding to the paper size, and a number of control items such as the dampening water and the ink supply amount are properly controlled. In the past,
JP-B-60-38741 and JP-A-63-230.
As shown in Japanese Laid-Open Patent Publication No. 342, an operation stand is attached to each individual printing press to individually control the above management items. However, in recent years,
In response to the development of computer-controlled branch surgery and the demand for reducing the operator's burden, a so-called group management system has been adopted in which a large number of printing presses are centrally controlled by a single computer.

Such group management of printing presses greatly contributes to the above-mentioned reduction of the burden on the operator and also has a great effect on the reduction of the factory space because the operation stand is not required.

Among the management items of the above-mentioned sheet-fed printing press, the adjustment of the ink supply amount has the greatest print quality and directly affects the print quality.
Since the ink supply amount is set by dividing it into a large number of ink zones, there is a demand for final fine adjustment while comparing it with the trial printing printed by each printing machine.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides an advanced sheet-fed printing machine, the purpose of which is to supply ink to a group-fed sheet-fed printing machine. The final fine adjustment of the amount is to be easily performed in each printing machine.

[0006]

To this end, in the sheet-fed printing press according to the present invention, an operation board (9) which can be tilted up and down is provided in a paper discharge section (7), and the operation board (9) is attached to the operation board (9). An ink supply amount adjusting means (10) is provided.

[0007]

As a result, the operation board (9) is raised when necessary, and the trial prints (8) taken out from the paper discharge section (7) are placed on the operation board (9) for comparison and individual printing is performed. In the machine, the final fine adjustment of the ink supply amount for each ink zone can be easily performed.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a schematic side view showing an embodiment of a sheet-fed printing press according to the present invention, FIG. 2 is a side view in which an essential part is enlarged, FIG. 3 is a plan view, and FIG. 4 is an ink supply amount adjustment. It is the top view which showed the means.

The sheet-fed printing machine shown in FIG. 1 is roughly classified into a sheet feeding section (2) for feeding the sheet (1) in a stream and an ink sent from an inking device (3) to the sheet (1). It is composed of a printing unit (4) for pressurizing and printing, and a paper discharge unit (7) for piling printed paper (5) on a paper stack (6).

The present invention is premised on the fact that a large number of such sheet-fed printing presses are arranged in a printing plant and are centrally controlled by a group management system. In other words, a large number of sheet-fed printing presses are not individually controlled by the operation stand as in the conventional case, but a large number of management items described above are centrally controlled by a single computer.

However, regarding the adjustment of the ink supply amount among a large number of management items, it is not enough to make a general adjustment by a computer for group management, as it is, and the final adjustment is made for each of a large number of divided ink zones. It is necessary to perform fine adjustment in correspondence with the trial printing (8).

Therefore, in the sheet-fed printing press according to the present invention, a so-called high-pile type paper discharge section (7) is provided with an operation board (9) which can be tilted up and down, and the ink supply amount is adjusted on the operation board (9). Means (10) are provided. The high-pile type paper ejecting section (7) has a paper conveying means (1
Since there is a casing (12) for storing 1), one end of a flat plate-shaped operation board (9) is swingably attached thereto by an appropriate shaft or hinge, and a positioning means (13) such as an air cylinder is used. The operation board (9) is supported so as to be tiltable at an arbitrary angle. That is, when not in use, the operation board (9) is tilted vertically downward, and is raised at an angle desired by the operator only when necessary for the adjustment work. In addition, it is natural that the trial printing (8) is taken out from the paper discharge section (7), so that this trial printing (8) is operated on the operation board (9).
It can be spread out and the printed matter can be observed in detail.

The structure itself of the ink supply amount adjusting means (10) is the same as that of the above-mentioned prior art, and the ink blade (14) of the inking device (3) is used for each of a plurality of divided ink zones. As it is designed to adjust the supply, pushbutton (15),
At (16), the ink supply amount is increased or decreased, and the supply amount is displayed (17). In addition, the ink supply amount adjusting means (10), a computer (not shown) for group management, and an inking device (3) having a blade driving means such as a stepping motor are not electrically connected. Needless to say.

[0014]

According to the sheet-fed printing machine of the present invention, the ink for each ink zone can be easily and individually used in each printing machine while comparing with the trial printing (8) taken out in the paper discharge section (7). Since the final fine adjustment of the supply amount can be performed, the printing quality can be further improved and the working efficiency can be remarkably improved, and at the same time, the factory space can be greatly saved.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of a sheet-fed printing press according to the present invention.

FIG. 2 is an enlarged side view of a main part of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a plan view showing an ink supply amount adjusting means.

[Explanation of symbols]

 2 Paper Feeding Section 3 Inking Device 4 Printing Unit 7 Paper Ejection Section 8 Trial Printing 9 Operation Board 10 Ink Supply Amount Adjusting Means 12 Casing 13 Positioning Means 15 Push Buttons 16 Push Buttons

Claims (1)

[Claims] 1. In a sheet-fed printing machine under group management, a tiltable operation board (9) is provided in a paper discharge section (7), and an ink supply amount adjusting means (10) is provided on the operation board (9). It is characterized by the provision of.