JPS63290747A - Cross needle position controller in sheet-fed press - Google Patents

Abstract

PURPOSE:To position a cross needle automatically, by determining a distance from a reference point to the cross needle according to a paper size and determining a fine adjustment dimension according to a printing condition. CONSTITUTION:A processor (CPU) 1 is disposed in the center of memory (MM) 2, an operation panel (OP) 3, and interfaces (I/F) 4, 5, which are connected with a bus 6. A motor (M) 8, an encoder (E) 9, and a sensor 10 are connected to the I/F 4. The CPU 1 executes the command in the MM 2 and performs a control operation while taking the data access to the MM 2, thus driving the M8 according to the output of the OP 3 and, on the other hand, determining the drive condition of the M 8 according to the outputs of the E 9 and the sensor 10. A signal representing the condition is issued to the OP 3 to turn ON a display lamp. A paper size is set by a switch 11, and a finely adjusted dimension is set by a switch 21 according to a relation between the picture pattern of a press plate which was checked by some test printing and a paper. In this manner, a cross needle is automatically positioned to an optimum point on the paper, which realizes the reduction of a required time for cross needle position adjustment and the saving of test printing papers.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for controlling the position of a horizontal needle used for regulating the lateral position of paper fed to a sheet-fed printing press.

[Conventional technology]

In sheet-fed printing machines, positioning tools called horizontal needles are installed on the left and right sides to determine the horizontal position of the paper so that the image on the printing plate is printed on the middle of the paper. The horizontal needle is manually moved according to the printing conditions and its position is set optimally.

[Problem that the invention seeks to solve]

However, the horizontal needle position setting must be adjusted while performing trial printing, which not only takes a long time, but also consumes a large amount of paper for trial printing, making it uneconomical and generally labor-intensive. However, in recent years, advances in plate-making technology, improved plate fixing mechanisms for plate cylinders, and the introduction of automatic register adjustment devices have made other operations and adjustments faster and more automated. However, setting the position of the horizontal needle is a lot of work), and there is a growing demand for automation of this process.

[Means for solving problems]

In order to solve the above-mentioned problem, the present invention is constructed by the following means.

That is, means for individually setting the distance from the reference point of the sheet-fed printing press to the horizontal needle and the fine adjustment dimension based on the distance;
The apparatus is provided with means for calculating the actual distance from the reference point to the horizontal needle according to the distance from the reference point to the horizontal needle and the fine adjustment dimension, and a driving means for moving the horizontal needle in accordance with the actual distance.

[Effect]

Therefore, by setting the distance from the reference point to the horizontal needle according to the paper size and setting the fine adjustment dimension according to the printing situation, the actual distance from the reference point to the horizontal needle can be automatically determined. , the horizontal diagonal moves in accordance with this, and the position of the horizontal needle is set.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

FIG. 1 is a block diagram showing the configuration, centered around a processor (hereinafter referred to as CPU) 1 such as a microprocessor,
ROM (R@ad 0nly M@mory, ) and RAM (Random Access M@m
memory by fC (hereinafter referred to as MM) 2, operation panel (hereinafter referred to as 0P) 3, in-me face (hereinafter referred to as I/
F) 4.5 are placed around the periphery and connected to the bus 6, and the I/F 4 is connected to a motor (hereinafter referred to as M) 8 and an encoder (hereinafter referred to as E) via a driver (hereinafter referred to as DR) 7. )9
, and the sensor 10 is connected to A5, and the CPU 1 is connected to MM.
It executes the instructions in MM2 and performs control operations while accessing the necessary data to MM2, and drives M8 via I/F4 according to the output of O20.
The drive status of M8 is determined according to the outputs of sensor 9 and sensor 10, and signals indicating these statuses are sent to O20 and displayed by its indicator light.

Also, I/F5 is the same as I/F4 (DR7 to sensor 10 are connected, and these are provided correspondingly to the left and right horizontal needles, respectively, while O20 is divided into two. , one page each is provided on the paper feed side and the paper discharge side of the printing machine.

Figure 2 is a front view showing the OP3m on the paper feeding side.It is installed at the end of the printing machine on the side where the paper feeding device is connected, and the size of the paper to be used is set in units of 0.1H. A switch 11 such as a digital switch is provided, and
A switch 12 for specifying each horizontal hand on the left and right side and canceling any designation, and a switch 13 for instructing the start of a control operation are provided. indicator lights 14.15, and
An indicator light 16 is also provided to alert the staff to whether or not there are any obstacles on the moving route of the cross hand before it starts moving.

FIG. 3 is a front view showing the paper ejection side 0P3b provided at the end of the printing machine where printed paper is ejected. A switch 21 similar to the switch 11 to be set, and a switch 22 similar to the switch 13, and an arrow-shaped indicator light 2 indicating the direction set by the switch 21.
3.21.

However, the direction of the fine adjustment dimension is opposite to the moving direction of the horizontal needle itself, and the direction in which the printed image moves on the paper is directly indicated according to the paper position according to the horizontal needle position. This prevents misunderstandings from occurring during operation.

FIG. 4 is a partially cutaway front view showing only one of the left and right horizontal needles. Between the frame 31 of the printing press and the mounting plate 32 facing it, there is a guide rail 33 and a bearing. 34) A rotatably supported feed screw 35 is stretched horizontally, and a horizontal needle unit 36 that slides on the guide rail 33 and screws with the feed screw 35 is supported by these. M8 shaft 3 fixed to mounting plate 32
Since the T and the feed screw 35 are coupled by the universal coupling 38, the horizontal needle unit 36 is driven to move rightward and leftward in the figure in response to forward and reverse rotation of M8. It has become.

Further, E9 such as a rotary encoder is connected to M8, and it sends out a pulse signal indicating the normal rotation and reverse rotation of M8. A sensor 1G using a proximity switch or the like is provided at the original position on the side in order to detect the return of the meter reading unit 36 to the original position.

Figure 5 shows the horizontal needle unit 36&*3 seen from the paper feeder side.
In the figure 6b, set the horizontal center line of the reed and printing press as the reference point 41.
From now on, the paper side edge 4 of the left horizontal stitch unit 36 &
When the distance Ll is determined at 2"!!, the fine adjustment dimension +L or -4 is determined based on this distance, and these are the switch 11 in Fig. 2 and the switch 21 in Fig. 3. Determined according to the settings.

Note that when the horizontal needles 36&, 36b return to the original position corresponding to the sensor 10 in FIG. 4, the distance from the reference point 41 becomes Lmax.

FIG. 6 is a flowchart of the control status performed by the CPU 1 in response to the operations of OP3m and OP3b. If 4101 is Y (YES), this will determine which switch?
When the switch is 12, r? depends on the number of times it is operated. L
i-+Z4R shift) 1 selection" 111 shift, left R
Each specified state of 1 right, right, 1 no selection 2 is selected in sequence with K and iteratively, this ``selection result S is stored in memory 4112, 7MM2 is stored, and the LorR indicator light is turned on in response to this ``S''. Step 113 is performed to turn on the indicator light 14 or 15 in FIG.
Repeat the following.

However, when 2 is selected as S, since no control is performed, both indicator lights 14 and 15 are turned off.

Next, if the result of step 102 is the paper feed side 5TARTJ switch 13 as shown in FIG. 2, the flag "t=1?"
J121 is checked, and in response to Y of this, the indicator light 16 in FIG. After prompting you to check whether there is a
23, the shear lag is reset, and the confirmation "standby for a certain period of time" 124 corresponding to step 122 is performed using a timer configured in the CPU 1, for example, as the time of a mathematical formula, and then the process returns to step 101.

In addition, the determination in step 102 is based on the "discharge side 5" shown in FIG.
For TARTJ switch 22, switch 1 in Figure 2
1, "Paper size setting value P read" 131 reads the paper size, corresponding to step 121, sets the flag "1←1" 132), "corresponds to P, calculation" 13
3, find the distance LH shown in Fig. 5, and then set the "fine adjustment dimension setting value L!" by the switch 21 shown in Fig. 3.
"Read" 134 is performed in the same manner as step 131.

Next, from MM2, “S@Lily” 141 Yoshi,
Read the selected result in step 111, and read out the result selected in step 111.
J142 is used to judge the contents of the message, and this is [S = [, J
If so, “L t, +−Ll + Lz @Lm←
LmaxJ143), the actual distance LL of the left horizontal needle unit) 3Bm to the reference point 41 is determined by calculation, and the similar actual distance Lm of the right horizontal needle unit) 36b is determined by Lma.
x, and when step 142 is l-8=ZJO, [LL+-Lmax * L * +-Lmax J
144, both are in the original position, step 142
When the result of is l'-8=RJ, f-LL +-L
max *Lx+-L*-Lm J 145,
Each actual distance LL as a relationship opposite to step 143.

After determining Ll, send “LL, Ll” via I/F4.5.
151, and then ``send start command to DR'' 152.

Then, a drive signal is sent from DRY in accordance with step 152, M8 rotates forward or reverse, and the horizontal needle unit) 36
1% 36b starts to move to a predetermined position, so based on the corresponding pulse signal from R9 or the detected force from sensor 10, it is judged "Positioning completed? J153", and if this becomes Y, a series of controls is executed. Finish and step 10
Return to 1.

Therefore, in the case of step 143, the horizontal needle unit 3
The actual distance '1aLL based on the 6m reference point 41 is Ll + L
,.

In addition, the similar actual distance of the horizontal needle unit 36b is determined as Lmax, and in the case of step 145, each actual distance is similarly determined. The position is set according to the paper size and printing situation.

That is, the paper size is set by the switch 11 in FIG. 2, and the switch 21 in FIG.
By setting the fine adjustment dimensions, the horizontal needle position is automatically determined so that the image is printed on the optimal location on the paper, making adjustment of the horizontal needle position quick and easy. )
, it is possible to shorten the predetermined time for horizontal needle position adjustment and to save trial printing paper.

In addition, since the direction in which the fine adjustment dimension is set by the switch 21 is the same as the movement direction of the image printed on the paper,
It is possible to reliably correct the position of a pattern printed on a container without causing any operational misunderstandings.

However, for M8, a motor, pulse motor, DC or AC motor, etc. may be used, and the configuration of DR7 may be selected accordingly.For E9, a potentiometer or the like may be used in addition to a rotary encoder. In addition to a proximity switch, a photoelectric switch, a mechanical switch, etc. may be used as the sensor 10. In FIGS. 2 and 3, a numeric keypad or the like is used as the switch 11. It is also possible to use various types of indicators for the Is, 16, 23, and 240s, and various modifications are possible.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, the horizontal needle position is automatically adjusted according to the settings of the paper size and fine adjustment dimensions, thereby shortening the time required for this and saving trial printing paper. However, it is possible to achieve overall labor saving and speeding up of printing operations, and a remarkable printing effect can be obtained in various sheet-fed printing machines.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, FIG. 1 is a block diagram showing the configuration, FIGS. 2 and 3 are front views of the operation panel, and FIG. 4 is a partially cutaway front view showing one horizontal needle. FIG. 5 is a diagram showing left and right horizontal hands, and FIG. 6 is a flowchart of the control situation. 1-...CPU (processor), 2...Fist MM
(memory), 3.3m, 3b 11 e fist e Qp
(operation board), 8@・sha-M (motor), 9.・fist・E(
encoder), 10...sensor, 11 to 13.21
．． 22...Switch, 33.e fist/guide rail,
35...fist feed) screw, 36.36a136b...
... Horizontal needle unit 141 ... Reference point, Ll % L
max e e e *distance 1. , same fine adjustment dimensions. Patent applicant: Komori Printing Machinery Co., Ltd. Agent: Masaki Yamakawa (and 2 others) Figure 1 Figure 2 + 1 Figure 3 h

Claims (1)

[Claims] Means for individually setting a distance from a reference point to a horizontal needle of a sheet-fed printing press and a fine adjustment dimension based on the distance; 1. A horizontal needle position control device for a sheet-fed printing press, comprising means for calculating an actual distance to the needle, and driving means for moving the horizontal needle according to the actual distance.