JPS5852925Y2 - Automatic manual switching device in printing presses - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an automatic manual switching device in a printing press.

Conventionally, in printing machines that have an automatic operation section and a manual operation section, switching between automatic and manual operation is performed using a changeover switch.For example, when a printing process is being performed using automatic operation, the process may be switched using manual operation. This method requires the addition of a compensation circuit for an electrical memory circuit in each process, which makes the whole process complicated, and has the disadvantage that it may result in damage to the automatic process drive mechanism.

The purpose of this invention is to provide an automatic manual switching device for a printing press that eliminates the drawbacks of the conventional ones mentioned above, can prevent erroneous operations with a simple configuration, and can switch between single-motion and manual modes with a simple operation. shall be.

This invention will be explained below based on embodiments shown in the drawings.

FIG. 1 shows an automatic operating section 1 and a manual operating section 2 of a printing press equipped with an automatic manual switching device according to this invention.
The manual operation section 2 is composed of a copy number counter 4 set by the printer, a mistake indicator lamp 5, a reset button 6, a print start button 7, and a printing press stop button 8. , a print number counter 10, a manual indicator lamp 11 that lights up when the printing machine is in manual operation, and an operation knob 12 that can perform a desired printing process.

FIG. 2 shows a cover 13 that covers the manual operation section 2 shown in FIG. A protrusion 14 is provided.

The actuating part of the microswitch 15 is located in the rotation range of the cover 13 at a position where it is actuated by the protrusion 14 when the cover 13 covers the manual operation part 2.

FIG. 4 shows a block diagram of the drive system of the printing press. 1 is an automatic operation section, 2 is a manual operation section, and 16 is a process switch. During manual operation, the operation knob is rotated to a certain process. The obtained process signal is sent to the control unit. 17 is a control unit that controls signals for the entire printing press. 18 is an automatic process feed control unit, which is a circuit that automatically advances the rotation of the operating knob during automatic operation. It exchanges signals with the control unit 17 and does not function during manual operation.

19 is a drive unit, 20 is a drive source such as a motor or solenoid,
15 is a microswitch operated by a cover 13 covering the manual operation section.

Next, the operation of the above will be explained.

First, when operating the printing press automatically, set the copy number counter 4 to the desired number using the keyboard 3, and press the start button 7. The drive unit 19 functions according to the signal from the automatic process feed control unit 18, and the necessary load of the drive source 20 (
(solenoid, motor, etc.) is activated, the operation knob 12 is automatically rotated, and the printing machine starts printing the set number of sheets.

When switching to manual operation midway through, use the manual operation section 2.
When the cover 13 that covers the microswitch 15 is opened, the signal from the microswitch 15 to the automatic process feed control section 18 will stop, and the automatic process feed control section 18 will no longer function. The signal being sent also stops, and the state is switched to a state in which the signal is sent from the manual operation section 2 to the control section 17.

Thereafter, when the operating knob 12 of the manual operating section 2 is placed in a desired position, a signal for the process corresponding to that position is sent to the control section 17, and the printing machine starts that process.

By configuring this device as described above, it is possible to prevent damage to the automatic drive mechanism etc. caused by erroneous operation during the automatic printing process, and without using any complicated circuits. It also has excellent effects, such as being able to be manufactured at low cost due to its simple structure.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an automatic operation section and a manual operation section provided in a printing press, and FIG. 2 is a sectional view of the manual operation section shown in FIG. 1, in which the device according to this invention is installed. FIG. 3 is an enlarged view of the operating knob, and FIG. 4 is a diagram showing the drive system of a printing press in which this invention is used. 1... Upper movement operation section, 2... Manual operation section,
13...Cover, 14...Protrusion, 1
5...Micro switch, 16...Process switch, 17...Control unit, 18...
・Automatic process feed control unit, 19... Drive unit, 20
...drive source, (load... solenoid,
motors, etc.).

Claims (1)

[Scope of utility model registration request] In a printing machine having an automatic operation section and a manual operation section,
The manual operation section includes a cover member that can be opened and closed, and a cover member that detects when the cover member closes and covers the manual operation section and issues a signal, and a signal that detects when the cover member opens the manual operation section. and a detection member that detects and stops the signal, and when the detection member issues the signal, the manual operation section becomes inoperable and the automatic operation section becomes operable, and the detection member An automatic/manual switching device for a printing press, characterized in that when the automatic operation unit stops transmitting a signal, the manual operation unit becomes operable and at least an automatic printing process command member of the automatic operation unit becomes inoperable.