JPH1199630A - Oscillation phase controller for oscillation roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oscillation phase controller for performing regulation of the oscillation phase of an oscillation roller incident to the switching work of an ink roller clutch easily and accurately through remote control without requiring any manual operation while suppressing vibration of a printer (rotary press) due to oscillation of the oscillation roller significantly so that it can deal with higher speed operation of the printer. SOLUTION: The oscillation phase controller for an oscillation roller comprises means (proximity sensors 16a, 16b, or the like) for detecting the oscillatory state of oscillation rollers 13a, 13b, and an oscillation phase control means for controlling the mutual oscillation timing of the oscillation rollers 13a, 13b in a plurality of ink roller groups 9a, 9b in conjunction with an on/off means (ink roller clutch) based on the information detected by the oscillating state detection means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of ink roller groups, a drive mechanism for rotating and swinging a swing roller provided in each of the ink roller groups by a rotational driving force of a main shaft,
The present invention relates to an oscillating roller oscillating phase control device which is applied to a printing unit which includes an intermittent means for intermittently driving the oscillating roller by the driving mechanism.

[0002]

2. Description of the Related Art Ink sent from an ink fountain or an ink pump of a printing press is caused by friction between a plurality of rotatably supported rubber rollers and a plurality of oscillating rollers rotating while oscillating in the axial direction. It is kneaded well and is supplied to the plate cylinder in the form of an ink film having a thickness corresponding to the image.

The oscillating roller is driven by a rotational driving force transmitted from a main shaft (rotary driving shaft) of a printing press, specifically, a rotational driving force transmitted from a gear driving a plate cylinder of the printing press. While being driven to rotate in the same direction, it is simultaneously pivoted in the axial direction by a pivoting mechanism, which enhances the ink mixing effect, but causes vibrations in the printing press. Therefore, conventionally, in a printing press having a plurality of oscillating rollers for one color, in order to reduce the vibration by dispersing the movement of the oscillating rollers, the oscillating phases of the respective oscillating rollers are shifted from each other, and simultaneously, I try not to move in the same direction. For example, as shown in FIG. 2, four rocking rollers 11a, 12a, 13 are provided for one plate cylinder 3a.
a and 14a, respectively,
The oscillating rollers 11a, 12a, 13a and 14a have their oscillating phases shifted by about 90 °. That is, when the two oscillating rollers 11a and 13a are both moving toward the drive side with their oscillating phases shifted from each other by about 90 °, the other two oscillating rollers 12a and 14a
In this case, a swing mechanism having a function of moving toward the operation side together with the phase of the swing being shifted by 90 ° from each other is adopted.

On the other hand, as a printing unit of a rotary press for simultaneously printing the front and back surfaces of a roll of paper, FIGS.
As shown in the figure, two sets of plate cylinders 3a and 3b and a blanket cylinder 4
a, 4b are arranged one by one on the upper and lower sides, and a roll-up paper (continuous paper for printing) 1 is passed horizontally between two adjacent blanket cylinders 4a and 4b to simultaneously print the front and back sides. And two sets of plate cylinders 3a, 3 as shown in FIG.
b and blanket cylinders 4a and 4b are arranged one by one on the left and right, and a vertical paper threading type in which the winding paper 1 is passed vertically between two adjacent blanket cylinders 4a and 4b to simultaneously print the front and back sides. is there.

[0005] Conventionally, the most common commercial web offset press is shown in FIG.
Four color printing units 20 are provided on the same floor 40,
The front and back surfaces of the paper roll 1 are sequentially changed by
It was a model of printing four colors on each side by printing each color. As shown in FIG. 8, the offset rotary press for printing multiple pages such as newspapers and books has a plurality of vertical paper threading type printing units 30 arranged side by side on the same floor 40, and each printing unit 30 In general, multi-page printing of one color on the front and back sides is performed through the paper roll 1 for each.

[0006] However, in recent years, with the increase in the number of colors and pages of printed materials, a variety of rotary presses have been required, and a commercial offset rotary press can perform colorful multi-page printing, and can save energy. As a rotary press capable of coping with space requirements, a rotary press having a structure in which two horizontal printing units 2U and 2L are stacked as shown in FIG. 1 has been developed. In a newspaper offset rotary press, which can switch between multi-color printing and multi-page printing, and can cope with space saving, a vertical paper threading type printing unit 30 as shown in FIG. Stacked towers have been developed.

[0007]

However, not only in such multi-stage printing units but also in conventional printing units, the oscillating roller has the following problems. (1) Since the rotary press becomes taller when the printing units are stacked, the lateral vibration of the rotary press becomes large unless the swinging directions of the swinging rollers in the plurality of ink rollers are equally distributed to the left and right. And high speed operation cannot be expected. Therefore, when the ink roller clutch (clutch mechanism for intermittently driving the rotation of the ink roller) is turned on (connected), it is visually checked that the rocking directions of the rocking rollers in the upper and lower ink roller groups do not match. However, since the operation of the ink roller clutch needs to be performed carefully by hand, it requires manual labor and skill. (2) Regarding the oscillating phase of a plurality of oscillating rollers in the same ink roller group of each printing unit, although the mechanism is mechanically shifted from the beginning, there are mounting errors and oscillating relative to the installation surface. There is a difference in the moment due to power. Further, in the related art, it is the actual situation that the "engagement" operation of the ink roller clutch is performed without particularly considering the mutual phases of the oscillating rollers in the ink roller groups on both sides. Therefore, the non-uniform swinging of the swinging rollers caused by these factors is the main factor of the vibration of the printing press. As a measure for further increasing the speed of the rotary press, the phase of the swinging of the ink rollers on both the front and back sides is considered. The need for precise control has arisen.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to adjust the swing phase of a swing roller associated with a switching operation of an ink roller clutch without having to manually adjust the swing phase. The swing phase of the swing roller can be easily and accurately controlled by an operation or the like, and the vibration of the printing press due to the swing of the swing roller can be greatly reduced. An object of the present invention is to provide a swing phase control device for a swing roller capable of coping with a higher speed.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, according to the present invention, a plurality of ink rollers and a oscillating roller disposed in each ink roller are rotated and rotated by a rotational driving force of a main shaft. In a swing roller swing phase control device applied to a printing unit including a drive mechanism for swinging and an intermittent means for intermittently intermittently driving the swing roller by the drive mechanism, the swing phase of the swing roller is controlled. Oscillating state detecting means for detecting the oscillating state, and controlling the oscillating timing of the oscillating rollers in the plurality of ink rollers in cooperation with the intermittent means based on information detected by the oscillating state detecting means. Oscillating phase control means.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIGS. 1 to 4 show the configuration of a rotary press (printing press) provided with a swing phase control device for a swing roller according to the present invention. Upper and lower continuous papers 2U and 2L sent out from a paper unit (not shown) are upper and lower printing units for simultaneously printing the front and back surfaces of the continuous paper 1U and 1L, respectively.
3a and 3b are plate cylinders for front and back printing, 4a and 4b are blanket cylinders for front and back printing, 5U and 5L are upper and lower main motors for driving a rotary press (printing machine), 6
U and 6L are upper and lower main shafts (rotary driving shafts) for transmitting the power applied from the main motors 5U and 5L to respective parts of the rotary press and driving the same, and 7U and 7L are the rotary driving forces of the main shafts 6U and 6L. The upper and lower printing units 2U,
A unit clutch for intermittently switching to 2L, 8a and 8b are ink fountains for front and back printing, and 9a and 9b are ink fountains 8a and 8b for front and back printing to respective plate cylinders 3a and 3b. The ink roller groups 10a, 10b to be supplied are members for intermittently connecting the rotational driving force transmitted by the main shafts 6U, 6L to the ink roller groups 9a, 9b. This is an ink roller clutch for printing.

As shown in FIG. 2, an ink roller group 9 disposed on the front side and the back side of the continuous paper 1U, 1L, respectively.
A drive force is transmitted to gears a and 9b from gears (not shown) for rotating the plate cylinders 3a and 3b, and the gears are rotationally driven in the circumferential direction. Four oscillating rollers 11a, 12a, 13 to be moved
a, 14a and 11b, 12b, 13b, 14b are arranged respectively, and these rocking rollers are in pressure contact with a large number of rotatably supported rubber rollers, respectively. A known mechanism using a cam groove and a lever is adopted as a drive mechanism (oscillation mechanism) for these oscillation rollers, and each of the four oscillation rollers 11a, 12a,
The phases of the swings are mechanically set to be shifted by about 90 ° so that 13a, 14a and 11b, 12b, 13b, 14b do not simultaneously swing in the same direction.

The oscillating phase control device of the oscillating roller according to the present embodiment is applied to the printing unit of the commercial offset rotary press configured as described above. The phase control device detects the oscillating state of the oscillating rollers 13a and 13b on both the front and back sides of the upper and lower printing units 2U and 2L, respectively, and detects the oscillating state by these detecting units. Based on the information, the upper and lower ink roller clutches 10a and 10b and the upper and lower main motors 5U and 5U in the upper and lower printing units 2U and 2L, respectively.
Rocking phase control means for controlling the operation timing of 5L.

As shown in FIG. 3 and FIG. 4, the swing state detecting means connects the cylindrical operation pieces 15a, 15b having a length twice as long as the swing stroke of the swing rollers 13a, 13b to the upper and lower stages. Proximity sensors 16a and 16b which are fixed to shafts 18a and 18b of swing rollers 13a and 13b on the front and back sides of the printing units 2U and 2L, respectively, and detect the end surface positions of these operating pieces 15a and 15b are connected to upper and lower printing units. The printing units 2U and 2L are fixed to the frames 19U and 19L of the printing units 2U and 2L via bearing members 17a and 17b which support the swinging rollers 13a and 13b of the front and back sides of the 2U and 2L in a rotational state while swinging in the axial direction. Things. Note that an encoder of an absolute value detection type is attached to the cam shaft of the swing drive source as the swing state detecting means of the swing rollers 13a and 13b, and this encoder is used as a substitute for the proximity switches 16a and 16b. May be.

On the other hand, although the swing phase control means is not shown, a push button for phase adjustment is provided on the operation panel.
The signal from the push button and the information signal from the swing state detecting means are transmitted to the upper and lower main motors 5U, 5L and the ink roller clutches 10a, 10b on the front and back of the upper and lower printing units 2U, 2L. Is supplied as a control signal to a control circuit for controlling each of the air cylinders operating the. That is, the swing phase control means controls the ink roller clutch 10 based on the information detected by the swing state detection means.
The timing of the swinging of the swinging rollers is controlled in cooperation with the intermittent means comprising a and 10b.

Next, the operation procedure and operation of the rotary press equipped with the phase control device of the present embodiment configured as described above will be described with reference to the flowchart of FIG. First, prior to the start of operation of the rotary press, a printing unit used in accordance with the operation plan of the day, for example, as a simple example, one upper and lower printing unit 2U and one lower printing unit 2L are used for each of front and back one-color printing. In the case of multi-page printing, the units 2U, 2
The L unit clutches 7a and 7b are set to the "ON" state. Next, turn on the push button for phase adjustment on the operation panel.
Then, the air cylinders of the ink roller clutches 10a and 10b on the front and back sides of the upper and lower printing units 2U and 2L are operated, and the ink roller clutches 10a and 10b are in the "on" state.

When the rotary press start button on the operation panel is turned on in this state, the upper and lower main motors 5U and 5L rotate at a slow rotation speed.
The timed contact of the circuit for setting the front and back ink roller clutches 10a, 10b in the "off" (disconnected) state in the upper and lower printing units 2U, 2L in which the U, 7L is "on" is set to ON. The timing for disengaging the ink roller clutches 10a and 10b is provided.

In this state, as shown in FIG. 4, when the front printing swinging roller 13a of the upper printing unit 2U swings toward the driving side by the distance S and the proximity sensor 16a detects this, the upper printing unit 2U The 2U front printing ink roller clutch 10a is disengaged. Then, the back printing swing roller 13b of the lower printing unit 2L swings toward the drive side by the distance S and the proximity sensor 16b detects this, and the back printing ink roller clutch 10b of the lower printing unit 2L is disengaged. . Further, the upper printing unit 2
When the swinging roller 13b for back printing of U U swings toward the operation side by the distance S and the proximity sensor 16b detects this, the ink roller clutch 1 for back printing of the upper printing unit 2U.
0b runs out. Then, when the front printing swing roller 13a of the lower printing unit 2L swings toward the operation side by the distance S and the proximity sensor 16a detects this, the front printing ink roller clutch 10a of the lower printing unit 2L is disengaged. All the ink roller clutches 10a and 10b on both sides of the printing unit to be used are disengaged. Accordingly, the rotation of the main motors 5U and 5L is stopped, and the rotary press is stopped. If at least one of the ink roller clutches 10a, 10b is not in the "disengaged" state, the operation of detecting the "disengaged" timing of the ink roller clutch by the proximity sensors 16a, 16b is performed for all the ink roller clutches 10a, 10b. Is performed continuously until is expired.
Next, all the ink roller clutches 10a and 10b of the printing units 2U and 2L to be used are switched to the "ON" state again, and the phase adjustment is completed. After a while
In this state, when the rotary press start button on the operation panel is turned on again to start the rotary press, printing is started.

Thus, when the swing roller 13a for front printing of the upper printing unit 2U and the swing roller 13b for back printing of the lower printing unit 2L respectively swing toward the drive side, the upper printing unit 2U The swing roller 13b for back printing and the swing roller 13a for front printing of the lower printing unit 2L respectively swing toward the operation side. For this reason, both in the relationship between the printing units 2U and 2L stacked vertically and in the single printing units 2U and 2L, the swinging rollers 13a and 13b on the front and back sides of the printing units 2U and 2L are also used. The moving direction and its position are evenly distributed.

The inertial force generated by the swinging of the plurality of swinging rollers 13a and 13b (the swinging cycle is the same and the oscillation phase is adjustable) acts as a vibrating force on the printing press. Then, by optimizing the oscillating phase, the oscillating roller arrangement position (mainly vertical distribution)
Among them, a plurality of inertial forces are neutralized (canceled) to reduce the vibration of the entire printing press. That is, for example, in the case of a printing machine in which the printing units 2U and 2L are stacked in two stages, all of the four swing rollers 13a and 13b in the upper and lower printing units 2U and 2L are simultaneously in the same direction in the left-right direction. Swinging causes large vibrations. Also,
Swing rollers 13a, 13b in the upper printing unit 2U
Simultaneously swing in the same direction, and the swing rollers 13a and 13b in the lower printing unit 2L simultaneously swing in the opposite direction. Therefore, in the embodiment of the present invention, as described above, the oscillating rollers 13a and 13b in the upper printing unit 2U are oscillated in opposite directions, and the oscillating rollers 13a and 13b in the lower printing unit 2L. And the swing roller 13a of the upper printing unit 2U and the swing roller 13b of the lower printing unit 2L swing in the same direction, and the swing of the upper printing unit 2U. Roller 13b and swing roller 1 of lower printing unit 2L
By swinging 3a in the opposite direction, the inertia force caused by the swing of the swing rollers 13a and 13b is offset to reduce the vibration.

As described above, the swing phase control device for the swing roller according to the present embodiment includes the swing rollers 13a and 13a.
b is detected, and the ink roller clutches 10a, 10a, 10a, 10b, 10c, 10d, 10c, 10d, 10c are moved so that the swinging directions of the swinging rollers 13a, 13b in the opposing ink roller group and their positions are exactly opposite to each other.
Since the operation timing of 10b is controlled, the following effects are obtained. (1) The frequency of switching of the ink roller clutches 10a and 10b tends to increase with the diversification of printed matter. However, when adjusting the rocking phase of the rocking rollers 13a and 13b accompanying this switching work, the ink is visually checked as in the conventional case. There is no need to manually engage and disengage the roller clutch,
Since the swing phase can be accurately adjusted easily and rationally in a short time by remote control, the printing preparation work can be greatly reduced. (2) Upper and lower swing rollers 13 in the case of a tall rotary press in which a plurality of printing units 2U and 2L are stacked.
In addition to equalizing the swinging states of the a and 13b, the swinging states of the swinging rollers on the front and back sides in the printing unit arranged on the same floor can be evenly distributed, so that the vibration of the rotary press caused by the swinging of the swinging roller can be reduced. It is possible to greatly reduce the number of rotations, which is a great effect for further increasing the speed of the rotary press.

Although one embodiment of the present invention has been described, the present invention is not limited to this embodiment, and various modifications and changes can be made based on the technical idea of the present invention. For example, oscillating rollers 11a, 11b, 12a, 12b and 14a, 14b other than the oscillating rollers 13a, 13b.
The swing phase control may be performed for. Further, the swing rollers 13a, 13a in the upper printing unit 2U.
3b, and swing rollers 13a and 13b in the lower printing unit 2L in opposite directions, and swing roller 13a of upper printing unit 2U and lower printing unit 2L. Swing roller 13a
And the swing roller 13b of the upper printing unit 2U and the lower printing unit 2L.
Rocking roller 13b in the direction opposite to this,
It is also possible to configure so as to reduce the vibration by canceling the inertial force due to the swing.

[0023]

As described above, the present invention relates to a swinging state detecting means for detecting the swinging state of a swinging roller, and an intermittent means (each ink roller) based on information detected by the swinging state detecting means. Intermittent means for intermittently intermitting the rotation and oscillation of the oscillation roller in the group) and oscillation phase control means for controlling the timing of oscillation between the oscillation rollers in the plurality of ink roller groups. Therefore, according to the present invention, the oscillating state of the oscillating roller is detected, and the oscillating direction of the oscillating roller and the position of the oscillating roller in the opposing ink roller group are exactly opposite to each other. The operation timing can be controlled. Therefore,
When adjusting the rocking phase of the rocking roller associated with the ink roller clutch switching work (work to set the ink roller clutch to the "on" state), the ink roller clutch switching operation must be manually performed while visually observing as in the past. Since it is not necessary to perform the adjustment, the phase adjustment can be performed rationally and accurately by remote operation easily and in a short time, so that no manual work or skill is required, and the printing preparation work can be greatly reduced. .

Further, according to the present invention, in the case of a tall printing press (rotary press) in which a plurality of printing units are stacked one above the other, the swinging state of the swing rollers in the upper and lower printing units can be accurately determined. In the case of a printing machine in which a plurality of printing units are arranged on the same floor, the swinging state of the swinging rollers on the front and back sides of the printing paper can be accurately and evenly distributed. The vibration of the printing press due to the swinging of the rollers can be greatly reduced, which has a great effect on further increasing the speed of the printing press.

[Brief description of the drawings]

FIG. 1 is an arrangement configuration diagram of a printing unit including a swing phase control device for a swing roller according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an arrangement configuration of an ink roller group in the printing unit.

FIG. 3 shows a configuration of a swing state detecting means provided in the printing unit, wherein (A) shows a swing state detecting means for detecting a swing position of a front printing swing roller. FIG. 7B is an enlarged sectional view showing a swing state detecting means for detecting a swing position of a swing roller for back printing.

FIG. 4 is an arrangement configuration diagram showing a swing state detecting unit and an ink roller clutch in a rotary press in which printing units are vertically stacked.

FIG. 5 is a flowchart illustrating a flow of phase control by the phase control device according to the embodiment.

FIG. 6 is a layout diagram showing a vertical paper threading type rotary press in which a plurality of printing units are vertically stacked.

FIG. 7 is a layout diagram illustrating a horizontal web-type rotary press in which a plurality of printing units are arranged on the same floor.

FIG. 8 is a layout diagram illustrating a vertical web-type rotary press in which a plurality of printing units are arranged on the same floor.

[Explanation of symbols]

 1U, 1L Continuous paper 2U, 2L Printing unit 3a, 3b Plate cylinder 4a, 4b Blanket cylinder 5U, 5L Main motor 6U, 6L Main shaft 7U, 7L Unit clutch 8U, 8L Ink fountain 9U, 9L Ink roller group 10U, 10L 13a, 13b swing roller 15a, 15b working piece 16a, 16b proximity roller

Claims (1)

[Claims] 1. A drive mechanism for rotating and swinging a plurality of ink roller groups, a swing roller disposed in each ink roller group by a rotational driving force of a main shaft, and driving of the swing roller by the drive mechanism A rocking state detecting means for detecting a rocking state of the rocking roller, wherein the rocking state detecting means detects the rocking state of the rocking roller. Oscillating phase control means for controlling the timing of oscillating between the oscillating rollers in the plurality of ink rollers in cooperation with the intermittent means based on the information detected by the means. Roller swing phase control device.