JPS6032664A - Automatically positioning method for printing machine, and the similar machine like creaser slotter - Google Patents

Abstract

PURPOSE:To rapidly and accurately adjust a rotary cylinder even if the cylinder is disposed at any position by normally rotating the cylinder until exceeding a base point, then reversely rotating over the base point, and then normally rotating from the position of the base point to the set position of processing. CONSTITUTION:A motor 3 is rotated in a normal direction at a high speed by a start command, and when a sensor 7 detects a basis point detector 6, it is temporarily stopped. It is then rotated reversely until the sensor 7 detects the detector 6, normally rotated at a high speed by the second start command, the number of pulses from a pulse generator 5 are counted from the moment that the detector 6 is detected by the sensor 7, and the motor 3 is rotated at a low speed at the prescribed speed shifting point. When the counted value of the pulses reaches the stopping point before the target point, the energization of the motor 3 is stopped, and the cylinder which is rotating by the inertia is stopped at the target point

Description

[Detailed Description of the Invention] The present invention automatically positions the machining point of a rotary cylinder relative to the incoming workpiece when printing at a preset position on the workpiece and performing ruled line processing on the cutting history. This relates to automatic positioning methods for similar devices such as printing machines and creaser slotters, and involves each rotation of a printer slotter (creaser slotter), which is a composite device that can be freely connected to devices for each process of printing, cutting, and lining corrugated sheets. The present invention relates to an automatic positioning method suitable for automatically positioning a corrugated cardboard sheet fed into a cylinder.

Generally, a printer slotter is a paper feeder, printing unit,
In history, slotter units, etc., established a unique reference point for each rotary cylinder's machining contact point (bottom dead center or top dead center), and each reference point was set sequentially as the machining process progressed over time. Be sure to position the corresponding machining contacts in a timely manner.

It is important to accurately synchronize each reference point. In other words, the units forming each component of the composite device can be separated from each other for work preparation, inspection, etc., and each rotating cylinder can be independently used for printing, mounting a die board, etc. Since it rotates freely, the relative positional relationship of the reference points of each rotating cylinder is in a random state when each unit is reconnected after each setting operation is completed. Therefore, it is impossible to operate the apparatus in this state, and it is necessary to synchronize the series of reference points before operation.

To explain this relationship based on the printer slotter unit shown in Fig. M1, the composite device consisting of the paper feed device 11, first and second printers 2, 3, creaser unit) 4, and slotter unit 5 is , each can be separated freely, and when operating the printer slotter, each unit is combined, but paper feed device fk1
As the corrugated paperboard sheet 8 fed from the
It is necessary to adjust it so that it coincides with the processing contact point 10 ~b4 (bottom dead center in the figure).

However, the conventional adjustment as described above is currently performed by + movement operation before combining the composite devices, and as a result, the adjustment operation is extremely cumbersome, resulting in poor work efficiency (and requires a lot of work time). This poses a problem in achieving full automation, and furthermore, when combining the composite device after yAu, there was a problem that the adjustment position could be misaligned depending on the meshing state of the gears that drive the power to each rotating cylinder. .

So, the main E! In view of the above circumstances, A is a printing method that not only shortens the adjustment time but also allows automatic adjustment to a predetermined target point regardless of the position of the single-turn cylinder before adjustment, and has high adjustment accuracy. The purpose of this invention is to provide a method for automatically positioning machines, creaser slotters, and similar devices.

The present invention aims to achieve the above-mentioned object (in a printing machine, creaser slotter, or other similar device that performs printing, cutting, or scoring on a supplied workpiece, a rotary cylinder that processes the workpiece of the device is used. , rotate the rotary cylinder in the forward direction until it passes the origin, which is the reference point for determining the preset machining position, then rotate the rotary cylinder in the reverse direction until it passes the origin, and then rotate the rotary cylinder to the workpiece. The present invention is characterized by an automatic positioning method for printing machines, creaser slotters, and other similar devices in synchronization with the machining position of the material (by rotating in the forward direction from the origin position to the machining setting position).

DESCRIPTION OF THE PREFERRED EMBODIMENTS An automatic positioning method for similar devices such as printing presses and creaser slotters according to the present invention will be described below with reference to the drawings. first,
A circuit device for carrying out this method will be explained based on the block diagram shown in FIG. 2. In the figure, 1 is a positioning control device consisting of a microcomputer. The positioning control device 1 receives various commands or input signals, which will be described later, and controls the rotational drive of an adjustment motor 3 via a motor drive device 2. The motor 3 is rotated in the normal or reverse direction of a rotary cylinder via a resistor 4 (differential device t), thereby performing positioning adjustment. It has a pulse generator 15 that generates pulses in accordance with the rotation of the motor, that is, the rotation 11 of the rotating cylinder, and the pulses generated from the pulse generator IIL5 are input to the positioning control device 1, and the pulses are input to the positioning control device 1. 1, the amount of rotation of the rotary cylinder is calculated. A protruding origin detecting section 6 is interposed in the register 4, a sensor 7 detects the origin detecting section 6, and a detection signal from the sensor 7 is inputted to the positioning control device 1111. The positioning control device 1 includes a pulse generator 15.
In addition to the pulses from and the detection signals from the sensor 7, commands such as a shift point command, a stop command, a closing completion command, a target point setting, and a start command (11, (21) are now provided. The origin detection section 6 may be provided on the rotating shaft of the (b) rotary cylinder.The circuit configuration shown in FIG.
Positioning control devices lt, ] t are installed in each unit 2 to 5 of the printer slotter shown in the figure.
t can also be used for each of the units 2 to 5.

As shown in Fig. wJ3, the register 4 uses what is called a harmonic drive mechanism (trade name).To explain the unit, the above-mentioned harmonic drive mechanism is attached to the rotating shaft 8a of a rotating cylinder 8 equipped with a machining blade. A power transmission gear 9 is attached to freely rotate, and the power transmission gear 9 is connected to the power transmission gears 9a of the other units 1 to 5.
The power source of the paper feeder 1 can be transmitted to each of the units 2 to 5 in sequence. A circular spline 10 having an internal gear 10a of the register 4 is fixed to the power transmission gear 9. Internal gear 10
An external gear 11a of a cylindrical and elastically deformable flexspline 11 is meshed with a. The number of external gears 11a is slightly smaller than the number of internal gears 10a (and the tooth pitch is the same).
It is fixedly installed.

An elliptical wave generator 13 is rotatably fitted into the flexspline 11 via a bearing 12. Wave generator 130 rotation axis 13
The motor 3 is connected to the motor 3 through a gear #14, and the pulse generator 5 is connected through another set of gears 15. During the adjustment, the motor 3 drives the rotary cylinder 8 through the gear #14, the rotary shaft 381 wave generator 13, and the flexspline 11 to rotate the rotary cylinder 8 in the forward or reverse direction. The rotation speed of the cylinder 8 is reduced in accordance with the difference in the number of teeth between the internal gear 10a and the external gear 11a with respect to the rotation speed of the motor 3.After adjustment, each unit 1 to 5 is connected to transmit power. The power transmission gears 9, 9a... are engaged, and then the printer slot is operated.
As the corrugated paperboard sheet S rotates, the rotary cylinder 8 rotates via the circular spline 10 and the flex spline 11 in a state determined by the adjustment described above, that is, in a state synchronized with the feeding of the corrugated cardboard sheet S.

Next, a method of adjustment using the circuit device shown in FIG. 2 will be explained with reference to the diagram shown in FIG. 4. First, before the units 1 to 5 of the printer slotter shown in FIG. 1 are combined, the positions of the rotary cylinders 7 to 10 are in a random state. Then, the operations shown in bold lines in FIG. 4 are performed until the connection of each unit 1 to 5 is completed. In other words, the first start command (1
1 is received by the positioning control device ft1, and the motor drive device fi
i2, the motor 3'Ik is rotated at high speed in one direction (hereinafter referred to as the normal rotation direction). This rotation is performed until the sensor 7 detects the origin detection section 6 and a detection signal is input to the positioning control device [1]. Upon input of the detection signal, the motor 3 is temporarily stopped. The stopping position of the rotating cylinder 8 is a position slightly beyond the origin. Next, the motor 3 is reversed by the positioning control device fkl for a certain period of time until or after the sensor 7 detects the origin detection section 6.

Then, when the connection of each unit 1 to 5 is completed, the rotating cylinder moves slightly (but the sensor 7
It is located in front. Furthermore, when the positioning device &t1 receives a closing completion command from a microswitch (not shown), etc.,
The second start command (2) is given to the positioning control device [1], and the Tanabata 3 is rotated forward at high speed by the positioning control device 1, and soon this forward rotation causes the sensor 7 to detect the origin detection part 67a'. Then, from the time of this detection, the positioning control device 1 counts the pulses inputted from the pulse generator 5. When the counted value reaches a shift point commanded in advance to the positioning control device l, the positioning control device fi11 rotates the motor 3 at a low speed, and then the counted value of the pulses reaches a point slightly before the preset target point. When the stop point is reached, the positioning control device 1 cuts off the power to the motor 3, and after the cutoff, the motor 3 rotates due to inertia and stops at the target point. The above-mentioned origin means that when the corrugated sheet S is fed into each unit 2 to 5, the leading end of the corrugated sheet S is located at each rotating cylinder 7 to 5.
This coincides with the point touching the plane of lO, as shown in Figure 5. Step 1 Start (1) High-speed running Step 2-'- Passing the position setting sensor N.

Step 3-f Power? E.S. After stopping once, About 10 temples before Sir 7 hoo 77’ 4 f” Return and stop Machine N.

is completely closed Is it 11/-? stepf 5

Claims (2)

[Claims] (1) In a printing machine, creaser slotter, or other similar device that performs printing, cutting, or crease processing on a supplied workpiece, the rotating cylinder that processes the workpiece of the device is set at a preset processing position. The rotary cylinder is rotated in the forward rotation direction until it passes the origin, which should be the reference point for processing, and then the rotary cylinder is rotated in the reverse direction until it passes the origin, and then the rotary cylinder is brought into synchronization with the machining position of the workpiece. An automatic positioning method for printing machines, creaser slotters, and similar devices, which is characterized by normal rotation from an origin position to a set processing position. (2) Each unit of the similar device is rotated in the normal rotation direction of a rotating cylinder from a separated state until the connection is completed, until it passes the origin that should be the reference point when determining the preset processing position, 2. The automatic positioning method for a printing press, creased lock, or similar device according to claim 1, wherein the rotary cylinder is then rotated in a reverse direction until it exceeds the origin.