JPH0524520Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention [Field of industrial application] The invention consists of a first blanket cylinder, a first plate cylinder, a second blanket cylinder that also serves as an impression cylinder, and a second plate cylinder. The present invention relates to a drive device for a control lever in a double-sided printing press comprising:

[Conventional technology]

In the above-mentioned double-sided printing machine, the first blanket cylinder and the second
Because paper is inserted between the rubber cylinder and printing is done on both the front and back sides of the paper at the same time, image adjustment on both the front and back sides is extremely troublesome and difficult. In addition, there is a common problem of complication and difficulty in operations such as humidification, inking, blank cleaning, etc., and switching operations between double-sided printing and single-sided printing.

Therefore, the applicant proposed a printing machine that solved the above-mentioned problems, and it was published in Japanese Patent Application Laid-Open No. 58-208055.

This printing machine can stabilize the paper flow from paper feeding to paper ejection, easily adjust the image for double-sided printing, and easily switch between double-sided and single-sided printing, and the entire process is made easy with a single operating lever. Although it can be said to be sufficiently effective in that it can be operated easily, the operability of the operation lever cannot be said to be sufficient.

In other words, the above-mentioned operation lever device is provided so that each device can be operated in a step-by-step manner to switch to 6 steps and to be held at 5 steps. When there is a plate in , after operating → →, it returns to the previous position and prints, and when the printing is completed, it automatically returns to →→. If there are no plates in the plate feeding device, the control lever is automatically returned to →→ and the machine stops.

However, according to the above-mentioned operation lever device, the operation lever is configured to move forward manually and operate automatically only when returning, so the machine will stop when one stroke of printing is completed, so one stroke Because it is not done continuously, printing productivity is reduced, and
Since manual operation is required for each stroke, there are still problems in terms of operability.

[Problem that the invention attempts to solve]

As a result of studies in view of the above-mentioned conventional problems, the present invention has been developed by arranging two feed pawls of an arm that swings in conjunction with the crank movement of the rubber cylinder in opposition to each other in an operating lever drive device. By connecting the solenoid for forward movement and the solenoid for return movement, and controlling both solenoids arbitrarily, each of the above-mentioned feed pawls can arbitrarily move the ratchet wheel fixed to the operating shaft to which the operating lever is attached in the forward or reverse direction. Moving the operating lever forward and backward, and attaching reed switches corresponding to each position of the operating lever,
By configuring the operating lever to be controllable by controlling each reed switch with a magnet fixed to the operating shaft, the next plate can be placed on both the first and second plate feeding devices. The plate is automatically fed without stopping the machine, and printing productivity can be increased by being able to continue to the next process continuously.
The purpose is to further simplify the operation.

B. Structure of the invention [Means for solving the problem] In other words, the present invention comprises a first blanket cylinder, a first printing cylinder and a second blanket cylinder that are detachably attached to the first blanket cylinder, and 2. A second plate cylinder that is detachable from the two blanket cylinders, a paper feeding and paper ejection device, a first moisture supply and a first
Inking and first blank cleaning equipment, and second
Moisturizing, second inking, and second blank cleaning devices, first plate feeding and first plate discharging devices, second plate feeding and second plate discharging devices, and both first and second image adjustment devices. In the operating lever drive device for a printing press, the operating lever drive device for a printing press is provided to operate all strokes of each of the above devices by rotating an operating lever attached to the operating shaft in multiple stages, the operating shaft has a ratchet wheel. , a set cam provided to enable multi-stage switching and positioning of the operating lever, and an arm equipped with a magnet are respectively fixed, and the ratchet wheel is controlled by two feed pawls capable of forward and reverse rotation, and a crank motion of the rubber cylinder. One of the two feed claws is connected to a forward solenoid and the other to a return solenoid, and each of the above-mentioned feeds is controlled by controlling each of the above-mentioned solenoids. By arbitrarily engaging the pawl with the ratchet wheel and arbitrarily rotating the ratchet wheel in the forward or reverse direction, the operating lever can be moved reciprocally in a predetermined section and back from a predetermined position, and the rotation locus of the arm can be adjusted. Reed switches are provided on the top so that they can be controlled ON and OFF by the magnets, corresponding to each position of the operating lever, and detect whether a plate is attached to the first plate cylinder or the second plate cylinder. Based on this detection, the feed pawl is engaged with the ratchet wheel and rotated forward or backward, and the printing operation is controlled to be repeated when a plate is installed, and when the plate is not installed, the printing machine is controlled to rotate. The above problem was solved by controlling the drive to stop.

〔Example〕

Embodiments of the present invention will be described in detail below based on the drawings.

First, as shown in Figure 1, the double-sided printing machine
A blanket cylinder 1 and a second blanket cylinder 3 which is detachably attached to the first blanket cylinder 1 and which also serves as a first plate cylinder 2 and an impression cylinder.
and a second rubber cylinder that is detachably attached to the second rubber cylinder 3.
Plate cylinder 4, paper feeding device 5, paper discharging device 6, first humidifying device 7, first inking device 8, first blank cleaning 9, second humidifying device 10, and second Blank cleaning device 12, first plate feeding device 13, first plate discharging device 14, second plate feeding device 15, and second plate discharging device 1
6, both first and second image adjustment devices (not shown),
The operating lever driving device 17 shown in FIG. 2 is also included.

In addition, in FIG. 1, 18 is a paper discharge tray, 19, 20
indicate each plate discharge table.

The operating lever drive device 17 of the present invention applied to the above-mentioned printing press is configured as follows.

As shown in FIGS. 2 to 4, the operating shaft 2
1 is rotatably installed between left and right frames 22, and is located on the operator's side of the printing press (hereinafter referred to as the machine), and has an operating lever 23 on the operating shaft 21.
is fixed, and the set cam 24, ratchet wheel 25, and arm 48 are also fixed respectively.

The set cam 24 has a substantially fan shape, and has five engagement recesses 24a, 24b, 24d, and 24e provided at appropriate intervals in the circumferential direction on a circumferential surface centered on the operating shaft 21. , one cam portion 24f
is provided continuously to the engagement recess 24e.

The frame 22 has an engagement roller 26 at one end.
An arm 125 is rotatably mounted on a shaft 27, and the engaging roller 26 of the arm 125 is fixed by a spring 28, which is hooked at the other end and the frame 22, respectively. The above set cam 24
The set cam 24 is elastically biased in the direction of engagement with the engagement recesses 24a... and the cam portion 24f, and by rotating the set cam 24 together with the operating shaft 21, the above-mentioned operation is performed against the spring force. By engaging the engagement roller 26 with each of the engagement recesses 24a, . . . and the cam portion 24f, the operating lever 23 can be switched to the positions shown in FIG.

That is, by sequentially engaging the engagement roller 26 with the engagement recesses 24a, 24b, 24c, 24d, and 24e and the cam portion 24f, the operating lever 23
Position, position, position, in order from the position of
Although it is designed to be switched between positions and held at each position, since the engaging recess 24e and the cam part 24f are connected, the engaging roller 26 is engaged with the single cam part 24f. After that, the operating lever 23 returns to the position from the position by being engaged with the engagement recess 24e.

Further, an intermediate portion of an arm 29 is rotatably fitted loosely into the operating shaft 21, and feed pawls 30 and 31 are respectively pivotally attached to both ends of the arm 29 so as to be removable from the ratchet 25. There is.

Pins 30a and 31a are fixed near the tips of the feed claws 30 and 31, respectively. Further, levers 32 and 33 are pivotally supported on the device frame 36 so as to be swingable by support shafts 34 and 35.
The pins 30a and 31a abut on one end of the feed claw 3, and the swinging of the levers 32 and 33 causes the feed claw 3 to
0 and 31 are controlled to engage and disengage from the ratchet wheel 24.

One end is hooked to each of the levers 32, 33, the other end is hooked to the device frame 36, and the springs 37, 3 are hooked.
8 are tensioned, and the levers 32 are moved counterclockwise in the figure by the springs 37 and 38, respectively.
On the other hand, the levers 33 are each biased clockwise in the figure, and come into contact with stoppers 39 and 40 provided on the device frame 36, and are held in a predetermined position against the spring force. The feed pawls 30, 31 are held in a state where they are removed from the ratchet wheel 25.

The other end of each lever 32, 33 is a link 41,
It is connected to solenoids 43 and 44 via 42.

Here, one solenoid 43 is used for backward movement, and the other solenoid 44 is used for forward movement.

Further, the ratchet wheel 25 has tooth portions 25a and 25b that are oriented in different directions so as to be rotated forward and backward by the respective feed pawls 30 and 31.

Further, since the rubber cylinder shaft 45 makes a crank movement, a pawl drive shaft 46 is provided in order to be linked to this crank movement, and the pawl drive shaft 44 and one end of the arm 29 are pivotally connected by a link 47. When the pawl drive shaft 46 makes a crank movement, the arm 29 is swung via the link 47, and one of the feed pawls 3
By keeping the other feed pawl 31 in engagement with the ratchet wheel 25, the feed pawl 30 rotates the ratchet wheel 25 clockwise in the figure, and by keeping the other feed pawl 31 in engagement with the ratchet wheel 25, The feed pawl 31 rotates the ratchet wheel 25 counterclockwise in the figure.

A solenoid 44 is turned on when the operating lever 23 is turned on. When the solenoid 44 is turned on, the lever 33 is rotated counterclockwise and the feed pawl 31 is released from its restraint, so that the ratchet wheel 25 is turned on. engage with
The ratchet 25 is rotated counterclockwise by the crank movement of the pawl drive shaft 46, and the operating lever 23 is rotated counterclockwise.
is rotated from position to position. In this way, the operating lever 23 can be moved forward by controlling the solenoid 44.

When the operating lever 23 is moved forward in this manner and the solenoid 44 is turned OFF at the position, the feed pawl 31 comes off from the ratchet wheel 25.
Next, when the other solenoid 43 is turned ON, the lever 32 rotates clockwise, so that the feed pawl 30 engages with the ratchet wheel 25, and the crank movement of the pawl drive shaft 46 causes the ratchet wheel 2 to move.
5 is rotated clockwise, thereby rotating the control lever 23 from the position to the position.

In this way, the operating lever 23 is returned to rotation in the order of →→.

Further, a magnet 49 is fixed to the arm 48 fixed to the operating shaft 21, while a magnet 49 is fixed to the arm 48 fixed to the device frame 36.
8, that is, on the rotation locus of 49, there are six reed switches 51, 52, 53, 54, corresponding to each position of the operating lever 23, .
55 and 56 at appropriate intervals radially, and when the operating shaft 21 is rotated by the ratchet wheel 25 as described above, the arm 4
8 rotates with the magnet 49, the magnet 49
When the reed switches 51 to 56 are sequentially brought into contact with and separated from them, the switches 51 to 56 are turned ON and OFF, and the operating lever 23 is controlled at its respective position.

Next, the relationship between the position of the operating lever 23 and the operation of each device will be explained based on FIG. 5.

When the operating lever 23 is in the position shown in FIG. 3, all mechanical operations are stopped. When switched to the above position, the drive motor (not shown) of the machine rotates, and both the first and second humidifying devices 7, 1
0, water duct roller is turned on. At this time,
The ink duct rollers of both the first and second inking devices 8, 11 are stopped because paper feeding is stopped.

When the position is switched to the position shown in FIG. Preparations are made. At this time, the second form roller touches the second plate cylinder 4 in terms of timing, but since it is necessary to switch between double-sided and single-sided printing, the second form roller is operated independently, so during double-sided printing, the switch is operated. The second form roller is brought into contact with the second plate cylinder 4 by. Further, during single-sided printing (second printing), the second form roller is held apart from the second plate cylinder 4.

Next, when switching to the position, the first plate cylinder 2 and the second plate cylinder 4 touch the first blanket cylinder 1 and the second blanket cylinder 3, respectively, and both the first and second inking devices 8, 11 operates, and the ink is transferred from the form roller to the printing plate. When switching to a further position, the paper feeding device 5 operates to feed paper. At this time, when the user releases the operating lever 23, the operating lever 23 immediately returns to its position and printing is performed.

Now, turn the operating lever 23 →→→
The solenoid 44 is controlled to switch to
When turned on, the feed pawl 31 rotates the ratchet wheel 25 and the feed is automatically performed.

When one stroke of printing is completed at the above position, if the plates are placed on both the first and second plate feeding devices 13 and 15, the operating lever 23 is automatically moved back to the beginning, and the plate is ejected and the blanket is removed. Perform cleaning,
Next, when the plate is installed, the operating lever 23 is automatically moved forward in sequence from 1 to 2, and then returned to 2 to immediately start printing the next step.

In other words, when one printing process is completed, both the first and second plate ejecting devices 14 and 16 operate to eject the plate, and then a new plate is installed and the next printing process begins; during this time, the machine is stopped. Since this is not the case, each stroke is performed continuously.

FIGS. 6 and 7 show the control circuits, respectively, and will be explained based on the figures.

57...Digital switch that determines the rotation speed of the wet cycle 58...Digital switch that determines the rotation speed of the inking cycle 59...Digital switch that determines the rotation speed of the image cycle 60...Digital switch that determines the rotation speed of the blanket cleaning Digital switches for determining 51-56... Reed switches for inputting the operating lever position 61... Switches for detecting whether or not a plate is placed on the master table of the first unit 62... Master table of the second unit A switch 63 for detecting whether a plate is placed on the machine is attached to the rubber cylinder shaft 45 of the machine,
A switch that turns on once when the machine rotates once (used to input the number of rotations of the machine) 64...Print end signal for preset counter, etc. 65-72...Input line of microcomputer 73-76...Micro Computer output line 77...Microcomputer with CPU89, RAM88, ROM90 input/output interface circuit 78...Lever feed relay, contact 91 drives solenoid 43 79...Lever return relay, contact 92 drives solenoid 44 Drive 80... Relay that controls plate feeding in the first plate feeding device 81... Relay that controls plate feeding in the second plate feeding device 84... Relay that controls the blanket cleaning device 85... Controls the blanket drying device 85...Relay to control the blanket drying device 86...Relay to stop the machine motor Switch input method For example, when inputting each switch 51 to 56 corresponding to the position of the operating lever, the microcomputer 77 to 73 To the output lines of ~76, output 73...High 74...Low 75...High 76...Low After that, input data from the input lines 65 to 72.

Then, only the Taeder wires whose switches 51 to 56, 61, and 62 connected to the output line set to Low are turned on become Low. That is 5
When only 51 is ON among switches 1 to 56, 61, and 62, input line 65 becomes Low, and 6
Inputs 6 to 72 become High.

Next, the operation of the present device will be explained with reference to Figs.

STEP Any of the operating lever position switches 51 to 56
Check if it is turned on.

If the control lever is stuck in the middle, switch 5
1 to 56 are all OFF and the operating lever position cannot be confirmed, so when turning on the power switch 51
~ Wait until any of 56 turns ON.

STEP In Fig. 9, input switches 51 to 56, and if any is ON (STEP〓〓〓〓〓The position of the operating lever is stored in the lever position register in RAM88 by that switch.〓〓〓STEP〓〓 STEP Lever Check whether the lever has been manually moved according to the contents of the position register.

The STEP lever is in the state where the form roller is touching the plate cylinder, and the plate cylinder is cleaned by rotating the machine in this state.

This cycle is performed for the number of rotations set by the digital switch 57. The number of rotations is input by switch 63.

STEP A cycle for feeding a plate on a master table to a plate cylinder. The first unit is controlled by a relay 80, and the second unit is controlled by a relay 81.

STEP A cycle for applying ink to the plate fed to the plate cylinder. This cycle is performed for the number of revolutions set by the digital switch 58. The number of rotations is input by switch 63.

STEP Turn on the lever feed solenoid 44 to advance the lever.

STEP Similar to STEP, input the lever position into the lever position register.

STEP Wait until the lever is in position.

STEP Turn off the lever feed solenoid 44.

The STEP lever touches the plate cylinder and blanket cylinder, and in this cycle, the ink on the plate cylinder is transferred to the blanket cylinder.
This cycle is performed for the number of revolutions set by the digital switch 59. The number of rotations is input by switch 63.

STEP Turn on the lever feed solenoid 44 and advance the lever to .

STEP Same as STEP STEP Wait for the lever to turn.

STEP Turn off the lever feed solenoid 44. When the lever is in position, paper feeding begins mechanically.
The lever also mechanically returns to its original position.

STEP Print end signal 6 by preset counter etc.
Wait until 4 is turned ON.

STEP Turn on the lever return solenoid 43 to return the lever to the position. Solenoid 43 is controlled by relay 78.

STEP Same as STEP STEP Wait until the lever returns to the position.

STEP Turn off the lever return solenoid 43.

STEP〓〓 This is a cycle for discharging the printing plate on the plate cylinder.

The first plate discharge device is controlled by a relay 82.

The second plate discharge device is controlled by relay 83.

STEP〓〓 Cycle for cleaning blankets.

This cycle is executed by the digital switch 60.
The rotation is performed for the set number of revolutions. The number of revolutions is input by switch 63 and the blanket cleaning device is controlled by relay 84.

STEP〓〓〓〓〓〓〓〓〓〓 Turn on the switch 61 which detects whether or not the plate attached to the first plate feeding device is set.

If the version is set, 1 is stored in continuous register 1.

If the version is not set, 0 is written in the continuous register.
Remember.

STEP〓〓〓〓〓〓〓〓〓〓 The switch 62 which detects whether the plate attached to the second plate feeding device is set is input.

If the version is set, 1 is stored in the continuous register.

If the version is not set, φ is placed in the continuous register.
Remember.

STEP〓〓 Cycle for drying washed blankets.

This cycle is performed for a preset number of revolutions. The rotation speed is controlled by a switch 63 and the blanket drying device is controlled by a relay 85.

STEP〓〓 Performs an AND operation between continuous register 1 and continuous register 2.

At this time, if the plates are set in both the first and second units, the result will be 1; otherwise, it will be 0.

Therefore, if the result is 1, the process returns to step 1 and starts the printing process again. Also, if the result is 0, the process proceeds to the step of stopping the machine.

STEP〓〓 To return the lever to its original position, turn on the lever return solenoid 43.

STEP〓〓 Same as STEP.

STEP〓〓 Wait until the lever is on.

STEP〓〓 Turn off the lever return solenoid 43.

STEP〓〓 Stop the machine. A separate circuit is provided to stop the machine using a relay 86.

The following control lever control procedure will be explained.

(1) Detects the lever position using a switch and stores it in memory.

(2) Manually move the lever to the position. (From now on, the lever will operate automatically.) (3) The plate cylinder will be cleaned, plate fed, and inked while the plate rotates at the set number of revolutions.

(4) To activate the forward ratchet, turn the solenoid 44 ON and OFF every stroke, and then automatically move the lever forward in sequence from the beginning to print the set number of sheets.

(5) In response to the print completion signal for the set number of sheets, the solenoid 43 for activating the return ratchet is turned ON and OFF for each stroke, and the lever is automatically moved back sequentially from the beginning to perform the plate ejection and cleaning process.

(6) Detects whether or not there is a plate waiting in the plate feeding device. If there is a plate, the process goes to step (3) above; if not, turns on the solenoid 43 to actuate the return ratchet. Return the lever to its previous position and the machine will stop.

[Effect of idea]

As explained above, since the operating lever driving device of the printing press according to the present invention is constructed, after the operating lever 23 is manually advanced from the beginning to the end, the solenoid 44 automatically advances the operating lever from the beginning to the end. When one line of printing ends at the position,
The solenoid 43 is activated every stroke by the print end signal.
Turn ON and OFF to automatically move the operating lever 23 back to , execute the plate ejection and cleaning process, and place the plate for the next process on both the first and second plate feeding devices 13 and 15. For example, when this is detected, the process of cleaning the plate cylinder, feeding the plate, and inking begins, turning the solenoid 44 ON and OFF for each process, and automatically moving the operating lever 23 forward in sequence from 1 to 6 to print the set number of sheets. and if there is no plate, solenoid 4
3 is turned ON, the operating lever 23 is automatically returned from to position 1, and the machine is stopped at this point, so the machine is not stopped after each stroke.
Since each process is performed continuously, printing productivity can be greatly improved compared to conventional methods.
In addition, all other strokes of the operating lever 23 are manually operated from start to end, and all other strokes are automatically forwarded and reversed. This has practical effects such as improving operability.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of a double-sided printing press incorporating the operating lever drive device according to the present invention, Fig. 2 is a side view showing an embodiment of the same drive device, and Fig. 3 is the operating lever in the same embodiment. FIG. 4 is a front view of the operating lever switching mechanism in the same embodiment, FIG. 4B is an exploded sectional view of the A-A section shown in FIG. 2, and FIG. 5 is a diagram showing the same implementation. An explanatory diagram showing the relationship between the position of the operating lever and the operation of each device in the example, FIGS. 6 and 7 are control circuit diagrams in the same example, and FIGS. 8 and 9 are diagrams in the same example. It is each operation explanatory diagram. 1...First blanket cylinder, 2...First plate cylinder, 3...Second blanket cylinder, 4...Second plate cylinder, 5...Paper feeder, 6
... Paper discharge device, 7 ... First humidifier, 8 ... First
Inking device, 9...first blank cleaning device, 1
0...Second humidifying device, 11...Second inking device, 12...Second blank cleaning device, 13...First
Plate feeding device, 14...first plate discharging device, 15...second
Plate feeding device, 16...Second plate discharging device, 21...Operation shaft, 24...Set cam, 23...Operation lever,
25... Ratchet foil, 29, 48... Arm, 30, 31... Feed claw, 49... Magnet, 4
3, 44... Solenoid, 51-56... Reed switch.

Claims (1)

[Claims for Utility Model Registration] A first blanket cylinder, a first printing cylinder and a second blanket cylinder that are detachably attached to the first blanket cylinder, and a second blanket cylinder that is detachable and attachable to the second blanket cylinder. a second plate cylinder, paper feeding and paper ejection devices, first humidification, first inking and first blank cleaning devices, second humidification, second inking and second blank cleaning devices, Equipped with a first plate feeding device and a first plate discharging device, a second plate feeding device and a second plate discharging device, and both first and second image adjustment devices, the operating lever attached to the operating shaft is rotated in multiple stages. In the operating lever drive device for a printing press, the operating shaft is provided with a ratchet wheel and the operating lever can be switched and positioned in multiple stages. A set cam and an arm to which a magnet is attached are each fixed, and two feed pawls are pivotally attached to the arm that swings in conjunction with the crank movement of the rubber cylinder, so that the ratchet wheel can be moved forward and reverse. One of the two feed pawls is connected to a forward solenoid, and the other is connected to a return solenoid, and by controlling each solenoid, each of the feed pawls is arbitrarily engaged with a ratchet wheel, and the ratchet wheel is arbitrarily engaged. By rotating forward and reverse, the operating lever is provided to reciprocate in a predetermined section and return from a predetermined position, and a reed switch is provided on the rotation locus of the arm corresponding to each position of the operating lever. are provided so that they can be controlled ON and OFF by the magnets, detect whether or not a plate is attached to the first plate cylinder and the second plate cylinder, and engage the feed pawl with the ratchet wheel based on the detection. 1. A printing press, characterized in that the printing machine is controlled to repeat the printing operation by rotating the printer in the forward direction or in the reverse direction when a plate is attached, and to stop driving the printing press when a plate is not attached. operating lever drive device.