JPS5987157A - Form rotary press - Google Patents

Abstract

PURPOSE:To prevent printed images from being deviated in position by such an arrangement wherein each unit is equipped with an independent drive motor and several units are simultaneously controlled by commands of set speeds. CONSTITUTION:In a form rotary multi-color press 1, a paper supply unit 2 equipped with an unwind roll (a), a print unit 3 equipped with a plate cylinder (b) and an impression cylinder (c), a process unit 4 equipped with a perforation processing roller (d) and a punch roll (e) and a folding unit 5 equipped with an unwind roll (f) and a folding vane (g) are arranged in a row, and the print unit 3 is composed of 4 print units 3a-3d and each of those units 2, 3a-3d, 4 of the press 1 is equipped with a DC drive motor 6-11, respectively, and a speed controller 13 controls speeds by feedback from a pulse tachogenerator 12 directly connected to the DC motor of the processing folding unit 4. Since each unit is equipped with a motor, a main spindle is not required, therefore, printed images can be prevented from being deviated in position in performing multi-color printing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foam rotary printing machine in which an individual drive motor is attached to each unit of the foam rotary printing machine, and several units can be controlled simultaneously and operated in synchronized motion.

Conventional form printing machines have one main shaft mounted horizontally on the side, and the main shaft communicates with each unit via a differential device. Therefore, there are multiple drive systems, and in multi-color machines, if printing misalignment occurs due to twisting of the main shaft, or if the target adjustment point, that is, the dimensions of the horizontal perforation folding machine, needs to be changed, adjustments must be made by changing gears, etc. There is a certain annoyance.

With the recent development of electronic technology, control methods have evolved from Ward Leonard control to thyristor control, from analog control to digital control, and finally computer control. Therefore, by using this control means, an independent drive device can be attached to each unit of a 7-ohm printing press so that they can be controlled simultaneously, and each unit can be rearranged and used for other machines. The purpose is to eliminate the need for replacement and further simplify the power system.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a foam printing machine according to the present invention will be described in detail below with reference to the accompanying drawings.

1 is a 7-ohm rotary multicolor printing machine, which has a paper feed section ko equipped with a drawer roll α, a printing section 3 having a plate cylinder and an impression cylinder C, a perforation roller d, and a bunch punching roll e. Machining part ψ
, a folding section S having a pull-out roll f and a folding blade y is arranged in a line. The printing section 3 has t printing units 3a.
.

3h, 3C, 3d, and each unit of the printing press 1, 3α, 34.3e:, 3d, and t has a DC drive element A, ? , t, ? , 1
It is equipped with a speed controller /3 based on feedback from a pulse tacho generator /ko which is directly connected to the DC motor / / of the unit Hiro in the processing folding section.

In addition, each of the unit units 3α, 3h, 3C, and 3d is a pulse generator/generator directly connected to the DC motors 6 to 10 in the same way.
Hiro, /! ;, /4, /7. /Speed controller with feedback of /9,20,ko/,ko,2.
．． Equipped with 2J, the controller commands the set speed /,? , /9
, Tips: Subtract or add the number of applied pulses to the force to synchronize the speed based on the processing part.

The present invention has the above configuration, in which the base paper is pulled out by the pull-out roll σ, passes between the printing cylinders and the impression cylinders of each printing unit 3α, 3h, 3c, and 3ct, and is printed on. Processing is performed at -i'L1, then pulled at the drawer eye -f, nailed, and folded at 8y, but the printing speed at this time is based on the rotation of the sewing machine processing section, or is it either When the speed is set based on the rotation of the part, the pulse generator is controlled by the controller with this set speed command, and this pulse signal is added and subtracted and sent to the motor to synchronize the motor of each unit. Since the motor is operated separately for each unit, there is no need for a conventional main shaft, and printing deviations do not occur even in multicolor printing.

In addition, since it is independently driven, it is flexible and can be freely rearranged and used for other equipment, and the power system is simplified, making maintenance easy. In addition, conventionally, the gears of the horizontal sewing machine were replaced depending on the folding size, but since it is independent, this becomes troublesome.
It has an i-sign.

[Brief explanation of the drawing]

The drawings show an embodiment of a foam rotary printing press according to the present invention, and FIG. 7 is a side view of the foam rotary printing press;
FIG. 2 is a block diagram of the drive. l ~ Form rotary multicolor printing machine - ~ Paper feed section 3 ~ Printing section
3a, ~3d~Printing unit t~Force] Engineering section S~Folding section 6~l/~DC drive motor /2~Pulse tacho generator /3~Speed controller /l~/Za~Pulse generator 7
9 ~ O ~ Speed controller σ ~ Drawer roll h ~ Plate cylinder C
~Impression cylinder d~Luminous roller e~Punch punch roll 1~Yumide roll y~Folding blade patent applicant Mei Seisakusho Co., Ltd.

Claims (1)

[Claims] The form printing machine consists of a paper feed section, printing section, processing section, and folding section arranged in series.Each unit is equipped with an independent drive motor, and a position detection generator is built into the motor and mechanical drive system. A foam rotary printing press equipped with a speed controller that receives feedback from the machine, and controls several units at the same time using a set speed command to operate them in synchronized synchronization.