JP4672196B2 - Ink supply device for rotary printing press - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ink for a rotary printing press. Supply device About. For example, the present invention relates to a mechanism for automatically controlling setting of a swing roller when cleaning an ink supply device.
[0002]
[Prior art]
An ink supply device of a printing press that supplies ink to the surface of a plate mounted on a plate cylinder includes an ink fountain that stores ink and a group of rollers that uniformly knead in each direction while transferring ink flowing out from the ink fountain. The ink transferred to the end portion of the roller group is supplied to the plate cylinder via the ink forming roller.
[0003]
An ink supply device (hereinafter referred to as an inker) that performs such ink starting operation is mechanically connected to a driving side (this machine) that rotationally drives the plate cylinder, and obtains rotational force from the driving side. A driving system is common.
[0004]
Furthermore, for short-time operation, such as inker maintenance, cleaning, and printing preparation, the inker and the drive side are disconnected by a clutch, and the inker is rotated independently from this machine by a separate drive source (motor) Has been developed (JP-A-63-315244).
[0005]
On the other hand, in order to prevent forgery, when performing rainbow printing, a swinging device for adjusting a swinging state composed of the swinging width and the number of swinging of the swinging roller is incorporated in the inker.
As this swinging device, the ink in the ink fountain is supplied to the swinging roller, and the swinging roller is reciprocated along the axial direction by a hydraulic cylinder so that the ink is stretched in the axial direction of the swinging roller, and the plate cylinder side There is known a hydraulic control system for supplying pressure to the vehicle (see, for example, JP-A-63-264352, JP-A-63-170138, etc.).
[0006]
[Problems to be solved by the invention]
When cleaning the inker described above, the inker and the machine side are mechanically separated, and the roller group and the swing roller are driven and rotated while spraying the cleaning liquid from the cleaning nozzle to the roller group. The cleaning operation was performed with the swinging width and the number of swinging of the swinging roller as usual.
In order to efficiently clean the inker, it is possible to change the setting of the swinging width so that the swinging width of the swing roller is widened. In fact, in practice, cleaning was generally performed without changing the swing width of the swing roller.
[0007]
Therefore, the cleaning of the inker roller group is not always efficient. In normal printing, since the number of times of shaking is constant, it is difficult to change the number of times of shaking during cleaning. The present invention has been made in view of the above prior art, and automatically changes the setting of the swing roller operation when cleaning the roller group of the inker. The It is an object of the present invention to provide an inking device control means. Furthermore, another object of the present invention is to complete the cleaning of the ink unit in a short time.
[0008]
[Means for Solving the Problems]
An ink supply device for a rotary printing press according to claim 1 of the present invention that achieves such an object includes a swing roller that can rotate in the circumferential direction and reciprocate along the axial direction, and a swing width of the swing roller. A swing width adjusting mechanism to be adjusted, and a swing width adjusting means for operating the swing width adjusting mechanism; A swing mechanism that reciprocates the swing roller; and a swing mechanism driving unit that operates the swing mechanism; during printing, the swing roller is rotated by a driving motor on the machine side that drives the printing press; The operation of the swinging width adjusting means is controlled so that the swinging width of the swinging roller becomes a specified value. On the other hand, during the cleaning operation, the swing roller is rotated by the swing mechanism driving means. And a control means for controlling the swing width adjusting means so that the swing roller has a preset swing width during the cleaning operation.
[0009]
An ink supply device for a rotary printing press according to a second aspect of the present invention that achieves the above object includes a swing roller that can rotate in the circumferential direction and reciprocate along the axial direction, and a swing that moves the swing roller back and forth. A mechanism, and a swing mechanism driving means for operating the swing mechanism; The specified value corresponding to the number of rotations of the plate cylinder Based on the number of rotations of the plate cylinder, the operation of the swing mechanism driving means is controlled, and the swing roller is Independent of plate cylinder speed Control means for controlling the swing mechanism driving means so as to have a predetermined number of swings is provided.
[0010]
Claims of the invention that achieve the above objectives 3 An ink supply device for a rotary printing press according to claim 2 The control means includes: During printing, the swinging roller is rotated by a motor on the machine that drives the printing press. The swing roller is controlled to rotate by the swing mechanism driving means.
Claims of the invention that achieve the above objectives 4 An ink supply device for a rotary printing press according to claim 1 or 3 A kneading roller supported in a circumferential direction and immovably supported in the axial direction, the control means, During cleaning work The kneading roller is controlled to rotate by the swing mechanism driving means.
[0011]
Claims of the invention that achieve the above objectives 5 An ink supply device for a rotary printing press according to claim 1 is provided. Or 2 A cleaning device that can rotate in the circumferential direction and is supported so as not to move in the axial direction, and a cleaning device that cleans the kneading roller and the swing roller; and Swing A setting means for setting the width or the number of swings to be increased, a memory for storing a set value of the previous swing width or the number of swings set by the setting means, and reading the set values from the memory at the end of cleaning. And returning to the swing width or the number of swings before cleaning.
[0012]
Claims of the invention that achieve the above objectives 6 An ink supply device for a rotary printing press according to claim 5 The setting means sets the swing width or the number of swings of the swing roller to a maximum.
[0013]
Claims of the invention that achieve the above objectives 7 An ink supply device for a rotary printing press according to claim 2 In Leave , A swing width adjusting mechanism for adjusting the swing width of the swing roller and swing width adjusting means for operating the swing width adjusting mechanism are provided, and the control means has a specified swing width of the swing roller. And controlling the swing width adjusting means so that the swing roller has a preset swing width during the cleaning operation. It is characterized by that.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment in which the present invention is applied to a double-sided multicolor offset printing machine will be described with reference to FIGS.
FIGS. 1A and 1B are an overall schematic configuration diagram of a double-sided multi-color offset printing machine and an enlarged view of a hydraulic cylinder, FIG. 2 is an enlarged view of an inker portion, and FIG. 4 is a plan view seen from the direction of arrow IV in FIG. 3, FIG. 5 is a front view seen from the direction of arrow V in FIG. 4, and FIG. FIG. 7 is a block diagram of the swing width control device, FIG. 8 is a block diagram of the swing frequency control device, FIG. 9 is a flowchart of the swing width control, and FIG. 10 is a swing frequency control device. FIG. 11 is a block diagram of another example of the swing width control device, FIG. 12 is a schematic configuration diagram of the driving force transmission mechanism of the inker, FIG. 13 is an explanatory diagram of the inker cleaning operation, and FIG. It is a flowchart which performs the automatic change of the swing width at the time of work.
[0015]
As shown in FIG. 1A, the paper supply unit 10 is provided with a paper supply table 11.
The paper feed unit 10 is provided with a feeder board 12 that feeds the sheet 1 as a sheet on the paper feed tray 11 to the printing unit 20 one by one.
A swing device 13 is provided at the front end of the feeder board 12 to transfer the sheet 1 to the transfer cylinder 21a of the printing unit 20.
[0016]
The transfer cylinder 21a is in contact with an impression cylinder 22a having a rubber blanket on its outer peripheral surface via transfer cylinders 21b to 21d.
A rubber cylinder 22b is in contact with the pressure cylinder 22a on the downstream side of the transfer cylinder 21d.
On the upstream side of the transfer cylinder 21d of the impression cylinder 22a, a plurality of (four in this embodiment) plate cylinders 23a are in contact with each other at a predetermined interval along the circumferential direction of the impression cylinder 22a. .
A plurality of (four in this embodiment) plate cylinders 23b are in contact with each other at a predetermined interval along the circumferential direction of the rubber cylinder 22b on the upstream side of the pressure cylinder 22a of the rubber cylinder 22b. .
A transfer drum 24 is in contact with the pressure drum 22a downstream of the rubber drum 22b.
[0017]
A paper discharge drum 31 of the paper discharge unit 30 is in contact with the transfer drum 24. A sprocket 32 is coaxially provided on the discharge cylinder 31.
The paper discharge unit 30 is provided with a sprocket 33.
A paper discharge chain 34 is stretched between the sprockets 32 and 33.
The paper discharge chain 34 is provided with a plurality of paper discharge claws (not shown) at predetermined intervals.
The paper discharge unit 30 is provided with paper discharge trays 35a and 35b on which printed sheets 100 are stacked.
[0018]
Further, as shown in FIG. 2, the plate cylinder 23a is provided with inkers 25 for supplying ink.
The inkers 25 include an ink fountain 25a that holds ink, a fountain roller 25b that feeds ink in the ink fountain 25a, a call roller 25c that draws out the ink fed by the fountain roller 25b, and a kneading roller that kneads the drawn ink 25d, a swinging roller 25e that moves the ink back and forth along the axial direction, an application roller 25f that supplies ink to the plate cylinder 23a, and these rollers 25b to 25f. And a driving roller 25g.
The plate cylinder 23b is also provided with inkers 25 similar to those described above.
Further, the inker 25 is provided with a hydraulic cylinder 26 as a frame moving means as shown in FIG.
The hydraulic cylinder 26 moves the inker 25 from a position indicated by a solid line in FIG. 1A to a position indicated by a two-dot chain line.
When the inker 25 moves to the position indicated by the two-dot chain line in FIG. 1A, the inker 25 is separated from the impression cylinder 22a and the plate cylinder 23a, so that the machine side and the inker 25 side are separated as will be described later. It becomes a state.
On the hydraulic cylinder 26, a sensor 27 for detecting the inker frame 20a is supported. This sensor 27 enables the electromagnetic clutch 120 to be turned on when the inker frame 20a is no longer detected, and prevents the electromagnetic clutch 120 from being turned on when a moving frame is detected.
That is, when the inker frame 20a and the main unit frame 20b are close to each other, the clutch 120 cannot be turned on.
[0019]
As shown in FIGS. 3 to 6, a support base 41 is attached in the vicinity of the shaft end of the swing roller 25 e of the inker frame 20 a of the printing unit 20.
The support base 41 is an L-shape in which a bent central portion between the distal end side and the proximal end side is swingably supported by a fulcrum pin 42 so as to be able to swing in a direction away from the swing roller 25e. A pair of swing levers 43 is provided.
These swing levers 43 are integrally connected by a plate 43b through bolts 43a.
[0020]
A slide groove 43c is formed between the tip end side of the swing lever 43 and the bent central portion.
A frame 43d is slidably attached to the slide groove 43c of the swing lever 43, respectively.
These pieces 43d are supported on the end side of the pin 45, respectively.
The pin 45 is connected so that the tip end side of the slide lever 44 and the one end side of the first link plate 46 can rotate.
That is, the tip end side of the slide lever 44 and the one end side of the first link plate 46 are supported by the swing lever 43 via the pin 45 and the top 43d so as to be able to approach and separate from the fulcrum pin 42. .
[0021]
On the other end side of the first link plate 46, the base end side of the swinging plate 48 supported so as to be swingable on the support base 41 via the fulcrum pin 47 between the front end side and the base end side has the pin 49. It is connected so that rotation is possible.
A cam follower 50 is attached to the distal end side of the swing plate 48.
The cam follower 50 is inserted into a grooved wheel 25ea provided on the shaft end side of the swing roller 25e.
Note that the shaft end of the swing roller 25e is slidably supported so that the swing roller 25e can reciprocate along the axial direction.
[0022]
On the other hand, a casing 51 having a built-in swing width adjusting motor 52 with a brake that can rotate forward and reverse is attached to the support base 41.
A gear 53 and a drive gear 54 are coaxially attached to the drive shaft of the motor 52.
The drive gear 54 meshes with a transmission gear 55 that is rotatably supported by the casing 51.
One end of a drive shaft 56 that is rotatably supported by the support base 41 via a bracket 41a is connected to the transmission gear 55 in a coaxial manner.
[0023]
A worm gear 57 is coaxially attached to the drive shaft 56.
The worm gear 57 meshes with a worm wheel 58 rotatably supported by the support base 41.
One end of a transmission shaft 59 that is rotatably supported by the support base 41 is connected to the worm wheel 58 in a coaxial manner.
One end side of the second link plate 60 is connected and fixed to the transmission shaft 59.
The other end side of the second link plate 60 is rotatably connected to the base end side of the slide lever 44 via a pin 61.
[0024]
That is, when the motor 52 is driven, the slide lever 44 swings through the drive gear 54, the transmission gear 55, the drive shaft 56, the worm gear 57, the worm wheel 58, the transmission shaft 59, the second link plate 60, and the pin 61. It slides and moves together with the pin 45 and the frame 43 d along the slide groove 43 c of the lever 43, and the pin 45 serving as the swing center of the first link plate 46 is moved with respect to the fulcrum pin 42 serving as the swing center of the swing lever 43. The distance between the pins 42 and 45 can be adjusted by approaching and separating.
[0025]
A potentiometer 62 is provided inside the casing 51.
A gear 63 is coaxially attached to the input shaft of the potentiometer 62, and the gear 63 meshes with the gear 53.
[0026]
That is, when the motor 52 is driven, the gear 53 rotates, and the potentiometer 62 detects the amount of rotation through the gear 63, that is, the distance between the pins 42 and 45 can be detected. It has become.
[0027]
Further, in the vicinity of the support base 41 of the inker frame 20a, the base end side of the support shaft 64 with the axis centered along the axial direction of the swing roller 25e is supported in a cantilever manner.
A transmission gear 65 is coaxially attached to the support shaft 64 near the inker frame 20a.
A rotating drum 66 is coaxially attached to the distal end side of the support shaft 64.
[0028]
A universal joint 67 is attached to one end surface of the rotating drum 66 so as to be offset with respect to the axial center position of the rotating drum 66.
A base end side of a shaft 68 is connected to the universal joint 67.
The distal end side of the shaft 68 is connected to the proximal end side of the swing lever 43 via a universal joint 69.
Further, as shown in FIG. 12, the transmission gear 65 meshes with the drive gear 71 of the swing mechanism driving motor 70 via the gear train 100.
[0029]
That is, the swing mechanism driving motor 70 is fixedly supported by the inker frame 20 a and the drive gear 71 meshes with the intermediate gear 101, and the intermediate gear 102 coaxial with the intermediate gear 101 meshes with the intermediate gear 103. Further, the intermediate gear 104 coaxially integrated with the intermediate gear 103 and the transmission gear 65 mesh with each other via the intermediate gear 105.
[0030]
That is, when the swing mechanism driving motor 70 is operated to rotate the drive gear 71, the rotary drum 66 rotates via the intermediate gears 101 to 105, the transmission gear 65 and the support shaft 64, and the rotation drum 66 rotates. Accordingly, the universal joint 67 revolves, and the shaft 68 reciprocates along the axial direction along with the revolution of the universal joint 67, thereby supporting the fulcrum via the universal joint 69 and the base end side of the swing lever 43. The tip end side of the swing lever 43 can be swung around the pin 42.
[0031]
Further, as shown in FIG. 12, a gear train 110 and an electromagnetic clutch (tooth clutch) 120 are interposed between the intermediate gear 103 and the kneading roller 25d.
That is, the kneading roller 25d is rotatably supported by the inker frame 20a similarly to the swinging roller 25e, and a transmission gear 111 is attached to one end thereof, and the transmission gear 111 is connected to the electromagnetic clutch 120 via the intermediate gear 112. Is engaged with one of the connecting gears 113.
The electromagnetic clutch 120 has a connection gear 114 coaxial with the connection gear 113 in addition to the connection gear 113, and the connection gear 114 is meshed with the intermediate gear 103.
[0032]
When the electromagnetic clutch 120 is energized, the connecting gear 113 and the connecting gear 114 are electromagnetically attracted and integrated, and when not energized, the connecting gear 113 and the connecting gear 114 can freely rotate.
Accordingly, when the swing mechanism driving motor 70 is operated while the electromagnetic clutch 120 is energized, the rotation is transmitted to the kneading roller 25d via the gear trains 100 and 110.
The electromagnetic clutch 120 is controlled by the control device 150 of the printing press so that the electromagnetic clutch 120 is connected only when the inker 25 is driven alone, and is disconnected during normal printing.
[0033]
Further, as shown in FIG. 12, the other ends of the plurality of swing rollers 25e and the kneading rollers 25d are configured to interlock with each other by a gear train 130 and are connected to the machine side via a clutch 140. (In the figure, some parts are omitted because they are complicated.)
The clutch 140 is always connected except that it is disconnected only during printing with a small number of colors.
Therefore, as shown in the figure, the driving force is transmitted from the driving motor 28 on the machine side to the swing roller 25e and the kneading roller 25d via the clutch 140 and the gear train 130, and the rollers 25e and 25d rotate. Become.
On the other hand, when the inker 25 is separated to the position indicated by the two-dot chain line in FIG. 1 by the hydraulic cylinder 26, as shown in FIG. 12, the inker frame 20a that supports the kneading roller 25d and the swing roller 25e, the impression cylinder 22a, and the plate The machine frame 20b supporting the body 23a is separated, the gear train 130 on the inker 25 side and the clutch 140 on the machine side are disconnected, and the machine side and the inker 25 side can be driven independently. It becomes a state.
[0034]
The hydraulic cylinder 26 for moving the inker 25 is moved to the position indicated by the two-dot chain line in FIG. 1A only when the inker 25 is driven alone. As shown by a solid line in a), the printing roller is controlled by the control device 150 of the printing press so as to be moved to a state in which the form roller 25f is in contact with the plate cylinder 23a.
Further, since the hydraulic cylinder 26 is a connection / disconnection means for connecting / disconnecting the main unit side and the inker 25 side, if such a function can be exhibited, the inker frame 20a is not necessarily moved, but the main unit frame 20b is moved. It is also possible to exhibit the function by making it.
[0035]
Further, as shown in FIG. 7, the amplitude adjusting motor 52 and the potentiometer 62 are respectively connected to an amplitude control device 80 that controls the rotation amount of the motor 52 based on a signal from the potentiometer 62. Yes.
A swing width setting device 81 for inputting a command signal such as a swing width of the swing roller 25e is connected to the swing width control device 80.
A conversion table 82 of a swing set by the swing setter 81 and a value detected by the potentiometer 62 is provided in the swing control device 80.
Accordingly, the swing width set by the swing width setting unit 81 is converted by the conversion table 82, and the swing width adjusting motor 52 is driven so that the value detected by the potentiometer 62 becomes the converted value.
[0036]
Further, the swing width control device 80 stores a swing width DATA memory 83 for storing the swing width of the swing width adjusting motor 52 at the time of cleaning and a swing width of the swing width adjusting motor 52 at the time of printing. A printing width DATA memory 84 at the time of printing is provided.
In the cleaning swing DATA memory 83, the most preferable value, generally the maximum swing width, is stored in advance as the swinging width of the swing roller 25e during cleaning.
As will be described later, this maximum swing width is read from the swing width DATA memory 83 and set in the swing width adjusting motor 52 during cleaning.
In the printing amplitude DATA memory 84 during printing, the amplitude of the amplitude adjusting motor 52 before cleaning, in other words, the amplitude of the amplitude adjusting motor 52 during normal rainbow printing is stored.
The amplitude at the time of the normal rainbow printing is read from the voltage value memory 95 after the completion of the cleaning as will be described later.
[0037]
On the other hand, as shown in FIG. 8, the swing mechanism driving motor 70 and the rotary encoder 72 connected to the swing mechanism driving motor 70 are rotated based on a signal from the rotary encoder 72. Are respectively connected to the number-of-turns control device 90 that controls the number of times.
The swing number control device 90 includes a rotary encoder 73 that detects the rotational speed of the transfer cylinder 21a, that is, the rotational speed of the plate cylinders 23a and 23b, and the number of swings of the swing roller 25e relative to the rotational speed of the plate cylinders 23a and 23b. Are connected to a swing number setting device 91 for inputting a command signal such as.
Therefore, the swing number control device 90 is configured to output the signal from the rotary encoder 72 based on the signal from the rotary encoder 73 so that the swing number of the swing roller 25e becomes the value designated by the swing number setting unit 91. The swing mechanism driving motor 70 is controlled while confirming the above.
In addition, a conversion table 93 for the number of rotations and the voltage value of the swing mechanism driving motor 70 is provided on the plate cylinders 23 a and 23 b detected by the rotary encoder 73.
[0038]
Further, the swing count control device 90 stores an automatic cleaning button 92, a voltage value memory 94 for storing the rotation speed of the swing mechanism driving motor 70 during cleaning, and the rotation speed of the swing mechanism driving motor 70 during printing. A voltage value memory 95 is provided.
When the automatic cleaning button 92 is operated, as shown in FIG. 13, the cleaning liquid is sprayed from the plurality of cleaning liquid ejection nozzles 96 toward the kneading roller 25d, and the kneading roller 25d is cleaned and drained from the swing roller 25e ( The cleaning liquid is recovered by the doctor 97.
The voltage value memory 94 stores the most preferable value as the rotation speed of the swing mechanism driving motor 70 at the time of cleaning, generally the maximum rotation speed.
This maximum rotation speed is read from the voltage value memory 94 and set in the swing mechanism driving motor 70 during cleaning, as will be described later.
The voltage value memory 95 stores the number of rotations of the swing mechanism driving motor 70 before cleaning, that is, the number of rotations of the swing mechanism driving motor 70 during normal printing.
The rotation speed at the time of normal printing is read from the voltage value memory 95 and set in the swing mechanism driving motor 70 at the end of cleaning as will be described later.
[0039]
As shown in FIGS. 7 and 8, the swing width control device 80 and the swing number control device 90 are connected to each other, and the swing width control device 80 is connected to the swing mechanism via the swing number control device 90. After confirming the driving of the driving motor 70, the swing width adjusting motor 52 is driven.
[0040]
In this embodiment, a crank mechanism is constituted by the support shaft 64, the transmission gear 65, the rotating drum 66, the universal joint 67, the shaft 68, the universal joint 69, etc., and the crank mechanism, the support base 41, the fulcrum pin 42, The swinging lever 43, the slide lever 44, the pin 45, the first link plate 46, the fulcrum pin 47, the swinging plate 48, the pin 49, the cam follower 50 and the like constitute a swing mechanism, and the support base 41, the drive gear 54, the transmission gear. 55, a drive shaft 56, a worm gear 57, a worm wheel 58, a transmission shaft 59, a second link plate 60, a pin 61, a slide lever 44 and the like constitute a swing width adjusting mechanism, and gears 53, 63, a potentiometer 62, a swing width control. The device 80, the amplitude setting device 81, etc. constitute the amplitude control means, Tali encoder 72 and 73, swing number control device 90 constitute a swing number control means such as by swinging number setting unit 91.
[0041]
In the double-sided multi-color offset printing machine equipped with such a swing roller 25e swinging device, the sheet 1 is fed from the paper stack 11 of the paper feeding unit 10 to the transfer cylinder 21a through the feeder board 12 and the swing device 13. When delivered, the sheet 1 is delivered to the impression cylinder 22a having a gripping claw device (not shown) of the printing unit 20 via the transfer cylinders 21b to 21d, and passes between the impression cylinder 22a and the rubber cylinder 22b. .
[0042]
At this time, the ink from the inker 25 is supplied to the plates of the plate cylinders 23a and 23b, and the ink corresponding to the pattern on the plate of the plate cylinder 23a is supplied to the blanket on the outer peripheral surface of the impression cylinder 22a. Since the ink corresponding to the pattern on the cylinder 23b is supplied to the blanket on the outer peripheral surface of the rubber cylinder 22b, the pattern on the impression cylinder 22a becomes a sheet as the sheet 1 passes between the cylinders 22a and 22b. 1 is transferred to one side, and the design of the rubber cylinder 22 b is transferred to the other side of the sheet 1.
[0043]
The double-sided multi-color printed sheet 1 is transferred to the paper discharge drum 31 through the transfer drum 24, and is transferred to the paper discharge claw of the paper discharge chain 33, and then conveyed to the paper discharge trays 35a and 35b. Is discharged.
[0044]
In this way, when ink is supplied from the inker 25 to the plate cylinders 23a and 23b, the swing width and the number of swings of the swing roller 25e are adjusted as follows.
[0045]
[Width adjustment]
When the swing width of the swing roller 25e is input to the swing width setting unit 81, the swing width control device 80 firstly, based on the signal from the swing number control device 90, the swing mechanism driving motor 70 as shown in FIG. The presence or absence of the operation is confirmed (Sa1).
When the swing mechanism driving motor 70 is stopped, the process does not proceed to the next step until the swing mechanism driving motor 70 is operated. When the swing mechanism driving motor 70 is operated, the next step is performed. Proceed to
This is because if the swing roller 25e is operated while the various rollers 25a to 25g of the inker 25 are stopped, the roller surface may be damaged by the friction.
[0046]
Next, the swing width control device 80 reads the swing width input from the swing width setting device 81 (Sa2), and determines the swing width of the swing roller 25e (the distance between the pins 42 and 45) and the value of the potentiometer 62. The value of the potentiometer 62 corresponding to the input amplitude is obtained (Sa3) based on the conversion table that defines the correlation of (3), the current value of the potentiometer 62 is read (Sa4), and the read potentiometer 62 It is checked whether the value matches the value obtained in step Sa3 (Sa5). If these values match, the process proceeds to step Sa10 described later (maintenance is maintained), and if these values do not match, the process proceeds to the next step.
[0047]
When the above values do not match, the swing adjustment motor 52 is operated (Sa6), the current value of the potentiometer 62 is read (Sa7), and the value of the read potentiometer 62 and the value obtained in the step Sa3 are obtained. It is confirmed whether or not the values match (Sa8). If these values do not match, the above steps Sa6 to 8 are repeated until the values match, and if the values match, the process proceeds to the next step.
[0048]
If the above values match, the operation of the swing adjustment motor 52 is stopped (Sa9), and whether or not the swing mechanism driving motor 70 is operated is confirmed (Sa10). When the motor 70 is in operation, the process returns to step Sa2, and when the motor 70 is stopped, the control is terminated.
Accordingly, the distance between the pins 42 and 45 via the drive gear 54, the transmission gear 55, the drive shaft 56, the worm gear 57, the worm wheel 58, the transmission shaft 59, the second link plate 60, the pin 61, and the slide lever 44. Is set.
[0049]
[Adjusting the number of swings]
When the number of swings of the swing roller 25e is input from the swing number setting unit 91 (the number of rotations of the plate cylinders 23a and 23b with respect to one reciprocating movement of the swing roller 25e), as shown in FIG. Based on the signal from the rotary encoder 73, the presence or absence of rotation of the transfer cylinder 21a, that is, the presence or absence of the operation of the printing press is confirmed (Sb1).
If the printing press is not operating, it does not proceed to the next step until the printing press is operated, and if the printing press is operating, it proceeds to the next step. This is because if the swing roller 25e is operated while the various rollers 25a to 25g of the inker 25 are stopped, the roller surface may be damaged by the friction.
[0050]
Next, the swing number control device 90 reads the swing number input from the swing number setting unit 91 (Sb2), and the rotational speed of the transfer cylinder 21a from the rotary encoder 73, that is, the rotational speed of the plate cylinders 23a and 23b. (Sb3), and based on a conversion table that defines the correlation between the rotational speed of the plate cylinders 23a and 23b and the voltage value of the swing mechanism driving motor 70, the swing corresponding to the rotational speed of the plate cylinders 23a and 23b. After obtaining the voltage value of the mechanism driving motor 70 (Sb4), the voltage value of the swing mechanism driving motor 70 corresponding to the number of swings is calculated by dividing the voltage value by the input number of swings (Sb5). ), And controls to drive the motor 70 with the voltage value (Sb6).
[0051]
Subsequently, whether or not the printing press is operating is confirmed (Sb7). If the printing press is operating, the process returns to step Sb2, and if the printing press is stopped, the control is terminated. As a result, the pin 45 is centered on the fulcrum pin 42 via the drive gear 71, the transmission gear 65, the support shaft 64, the rotary drum 66, the universal joint 67, the shaft 68, the universal joint 69, and the swing lever 43. The reciprocating movement is always performed at a cycle corresponding to the rotation cycle of the plate 23b, and the swing plate 48 is centered on the pin 49 via the first link plate 46 and the fulcrum pin 47, and the cycle always corresponds to the rotation cycle of the plate cylinders 23a and 23b. The swing roller 25e reciprocates at the number of swings always corresponding to the rotation period of the plate cylinders 23a and 23b through the cam follower 50 inserted into the groove wheel 25ea.
[0052]
For this reason, in such a swing device, (1) the swing amount of the swing roller 25e is adjusted by controlling the rotation amount of the swing width adjusting motor 52, and the rotational speed of the swing mechanism driving motor 70 is controlled. Thus, the number of swings of the swing roller 25e is adjusted, so that the control mechanism of the swing roller 25e can be simplified, and (2) the swing state of the swing roller 25e is controlled by the motors 52 and 70. Therefore, the swing roller 25e can be easily operated with high responsiveness, and the delicate swing of the swing roller 25e can be easily adjusted.
[0053]
Therefore, according to such a swinging device, it is possible to adjust the swinging state of the swinging roller 25e with a simple mechanism with high responsiveness.
[0054]
When an induction motor is applied to the swing adjustment motor 52, it is not necessary to provide a driver for the motor 52 in the swing control device 80 as shown in FIG. 7, but as shown in FIG. In addition, when applied to a swing adjustment motor 52 ′ to which a normal servo motor is applied, a swing control device 80 ′ provided with a driver for the motor 52 ′ may be applied.
[0055]
[Inker independent drive]
The printing machine configured as described above can drive the inker 25 independently by using the swing mechanism driving motor 70 at the time of cleaning work or maintenance.
That is, as shown by a two-dot chain line shown in FIG. 1A, while the inker 25 is separated from the machine, the electromagnetic clutch 120 is energized to swing the swing mechanism driving motor 70 and the kneading roller 25d. Then, the swing roller 25e is mechanically connected to the gear train 110.
[0056]
Thereafter, the swing mechanism driving motor 70 is operated, and the rotation is transmitted to the swing roller 25e via the gear train 100, the shaft 68, the swing plate 48, etc., and reciprocally driven, and at the same time via the gear trains 100 and 110. The rotation is transmitted to the kneading roller 25d and further transmitted to the other kneading rollers 25d and the swinging roller 25e via the gear train 130, thereby driving and rotating the plurality of kneading rollers 25d and the swinging rollers 25e.
[0057]
Thus, the cleaning operation or the maintenance operation in the inker 25 can be performed in a state where the plurality of kneading rollers 25d and the swing roller 25e are driven and rotated, and the inker 25 is separated from the machine. At the same time as the maintenance work for the inker 25, maintenance work such as plate change work for the plate cylinder 23a can be performed on this machine side.
In addition, since the inker 25 is separated from the machine, an operator can enter between the rubber cylinders 22b, and maintenance such as blanket replacement can be performed on the rubber cylinder 22b.
That is, in this embodiment, individual maintenance is possible for the printing unit and the inker 25.
The electromagnetic clutch 120 and the hydraulic cylinder 26 of the inker 25 described above may be controlled to be automatically operated by the control device 150 of the printing press so as to be turned on and off at the same time. It may be controlled so that the electromagnetic clutch 120 is automatically connected when disconnected from the machine.
[0058]
Conversely, during normal printing, that is, in a state where the inker 25 is connected to the printer by the hydraulic cylinder 26, the electromagnetic clutch 120 may be controlled to be automatically disconnected.
Further, instead of the hydraulic cylinder 26 that moves the inker 25, the clutch 140 may be connected to and disconnected from the main unit side and the inker side in conjunction with the electromagnetic clutch 120.
[0059]
As described above, in the printing press according to the present embodiment, in the inker 25 having the swing mechanism driving motor 70, the rotation of the swing mechanism driving motor 70 is connected to and disconnected from the kneading roller 25d and the swing roller 25e. And the clutch 140 for connecting / disconnecting the inker 25 and the machine side is provided, so that the swing roller 25e can be reciprocated in the axial direction by the swing mechanism driving motor 70 during normal printing. At the time of cleaning work or maintenance, the swing roller 25e and the kneading roller 25d can be rotated at the same time as the swing roller 25e is driven to reciprocate.
Therefore, it is not necessary to install a motor for driving the inker alone. As a result, the number of motors installed for each color of the ink unit is reduced, and the cost and the size can be reduced.
[0060]
[Automatic change of swing width and number of swings during cleaning work]
Further, at the time of the cleaning operation, the swing width and the number of swings of the swing roller 25e are automatically changed as follows according to the flowchart shown in FIG. 14 so that the cleaning operation can be performed efficiently. This flowchart includes a flow when the swing width at the time of printing is the maximum.
First, the hydraulic cylinder 26 for moving the inker is operated to be in a separated state, and the electromagnetic clutch 120 is turned on.
Thereafter, when the automatic washing button 92 is pressed (step Sc1), the inker single condition in which the inker 25 can be driven independently, that is, the inker 25 is separated from the main unit, and the swing mechanism driving motor 70 is driven. And the kneading roller 25d and the swing roller 25e are determined to determine whether or not the mechanically connected state is established in the gear train 110 (step Sc2). Further, if the inker single condition is not satisfied, control is performed by the control device 150 of the printing press so as to display an error and stop the cleaning operation (step Sc3).
Next, the voltage value of the swing mechanism driving motor 70 during ink cleaning is read from the voltage value memory 94 (step Sc4), and this voltage value is output to the swing mechanism driving motor 70 (step Sc5).
[0061]
As a result, the swing mechanism driving motor 70 reaches the maximum rotation in the inker, and the rotation is transmitted to the swing roller 25e via the gear train 100 or the like to reciprocate and simultaneously rotate via the gear trains 100 and 110. Is transmitted to the kneading roller 25d and further transmitted to the other kneading roller 25d and the swinging roller 25e via the gear train 130, thereby driving and rotating the plurality of kneading rollers 25d and the swinging roller 25e.
As shown in FIG. 13, the cleaning liquid is sprayed from a plurality of cleaning liquid ejection nozzles 96 to the kneading roller 25d, and the kneading roller 25d is cleaned and the cleaning liquid is discharged from the swing roller 25e by a drain receiver (cleaning doctor) 97. However, the jetting of the cleaning liquid and the recovery of the cleaning liquid are controlled by the control device 150 of the printing press so that the swing mechanism driving motor 70 is started during operation.
Subsequently, the swing width of the swing adjustment motor 52 before cleaning, in other words, the swing width of the swing adjustment motor 52 during normal printing is stored in the swing DATA memory 84 (step Sc6), and the swing during cleaning is performed. A swing width (hereinafter referred to as the maximum swing width) stored in advance as the swing width of the roller 25e is read from the swing DATA memory 83 (step Sc7), and the potentiometer data (rotation of the motor 52) measured by the potentiometer 62 is read out. Amount) is read out (step Sc8).
[0062]
It is determined whether or not the read data is the same as that at the time of cleaning, that is, whether or not the maximum swing width is obtained even during printing (step Sc9). This state is maintained without giving an operation command to step S14, and the process proceeds to step Sc14 described later.
If the swing width during printing is small, an operation command is given to the swing width adjusting motor 52 (step Sc10), the potentiometer data is read from the potentiometer 62 (step Sc11), and compared with the swing width of the potentiometer 62 (step Sc12). ), The operation command is continued to the amplitude adjusting motor 52 until the same value as the amplitude of the potentiometer 62, and when the same value as the amplitude of the potentiometer 62 is reached, the amplitude adjusting motor 52 is stopped (step Sc13). .
When the ink cleaning end button is pressed and the cleaning operation is completed (step Sc14), the amplitude data and the potentiometer data used at the time of printing are read from the amplitude data memory 83 and the potentiometer 62 (steps Sc15 and 16). .
[0063]
It is determined whether or not the read data is the same as that at the time of cleaning, that is, whether or not the maximum swing width is obtained even during printing (step Sc17). Is stopped (step Sc22), and the cleaning operation is terminated.
If the swing width during printing is small, an operation command is given to the swing width adjusting motor 52 (step Sc18), potentiometer data is read from the potentiometer 62 (step Sc19), and compared with the swing width of the potentiometer 62 (step Sc20). ), Until the value becomes the same as the potion data, and when it becomes the same, the swing width adjusting motor 52 is stopped (step Sc21), the swing mechanism driving motor 70 is stopped (step Sc22), and the cleaning operation is finished. .
[0064]
As described above, the flowchart shown in FIG. 14 relates to automatic change of the swing width of the swing roller 25e and the number of swings of the swing roller 25e.
Therefore, the inker 25 is cleaned while the swing roller 25e is driven and rotated at the maximum swing width, and the inker 25 is more efficiently cleaned than when the swing roller 25e is driven with the swing width during normal printing. Will be done.
Further, the inker 25 is efficiently cleaned and the cleaning time can be shortened as compared with the case where the swing roller 25e is driven by the number of times of swing during normal printing. The inker cleaning may be performed at a slightly lower rotational speed than the preset maximum rotational speed.
[0065]
In addition, when the printing is resumed after the completion of the cleaning, the number of times of shaking is returned to the original setting value. Therefore, when the same printed matter as that before the cleaning is printed, the adjustment again is not necessary.
When the ink roller is washed, the swing driving load is reduced, so that no inconvenience occurs even if the number of swings is increased.
As described above, in conjunction with the automatic cleaning button 92, the swing roller 25e is automatically changed so that the swing width and the number of swings are maximized, so that efficient inker cleaning can be performed. Moreover, since the setting is automatically changed to the setting of the swing width and the swing speed before the cleaning after the cleaning is completed, the adjustment again is not necessary.
In this embodiment, the swing width adjusting motor 52 and the swing mechanism driving motor 70 are controlled so that the swing width and the number of swings of the 25 swing rollers are maximized during cleaning. The swing width adjusting motor 52 may be controlled so that only the maximum number of swings is adjusted, or the swing mechanism driving motor 70 may be controlled so that only the swing number of the swing roller 25e is maximized. good.
[0066]
【The invention's effect】
As specifically described above based on the embodiments, in the present invention, the setting of the swinging width and the number of swinging of the swing roller can be automatically changed when the ink supply device is cleaned. Thus, it is possible to efficiently perform a cleaning operation and the like.
Further, after the completion of the cleaning operation or the like, the setting of the swinging width and the number of swings of the swinging roller can be returned to the base, so that there is no need for re-adjustment and there is no trouble in normal printing.
[Brief description of the drawings]
FIG. 1 (a) is an overall schematic configuration diagram of an embodiment when a swinging roller swinging device according to the present invention is applied to a swinging roller of an ink supply device of a double-sided multicolor offset printing machine, FIG. ) Is an enlarged view of a hydraulic cylinder.
FIG. 2 is an enlarged view of extraction of an ink supply device portion.
FIG. 3 is a side sectional view showing a schematic structure of a main part of a swinging device for a swinging roller.
4 is a plan view seen from the direction of arrow IV in FIG. 3. FIG.
5 is a front view seen from the direction of arrow V in FIG. 4. FIG.
6 is a developed cross-sectional view of the main part of FIG. 3. FIG.
FIG. 7 is a block diagram of a swing width control device.
FIG. 8 is a block diagram of a swing number control device.
FIG. 9 is a flowchart of swing width control.
FIG. 10 is a flowchart of the number of times control.
FIG. 11 is a block diagram of another example of the swing width control device.
FIG. 12 is a schematic configuration diagram of a driving force transmission mechanism of an inker.
FIG. 13 is an explanatory diagram of an inker cleaning operation.
FIG. 14 is a flowchart for automatically changing the swing width during a cleaning operation.
[Explanation of symbols]
25e Swing roller
25ea ditch wheel
26 Hydraulic cylinder
27 Sensor
28 Motor
41 Support stand
41a bracket
42 fulcrum pin
43 Swing lever
43a bolt
43b plate
43c Slide groove
43d frame
44 Slide lever
45 pin
46 First link plate
47 fulcrum pin
48 Swing plate
49 pins
50 Cam Follower
51 casing
52, 52 'swing width adjusting motor
53 Gear
54 Drive gear
55 Transmission gear
56 Drive shaft
57 Worm gear
58 Worm wheel
59 Transmission shaft
60 Second link plate
61 axis
62 Potentiometer
63 Gear
64 Support shaft
65 Transmission gear
66 Rotating drum
67 Universal joint
68 shaft
69 Universal joint
70 Motor for driving the swing mechanism
71 Drive gear
72 Rotary encoder
73 Rotary encoder
80, 80 'swing width control device
81 Swing width setting device
82 Swing range-Potentiometer value conversion table
83 Swing width DATA memory during cleaning
84 Swing width DATA memory when printing
90 Swing frequency control device
91 Swing count setting device
92 Button for automatic cleaning
93 Plate Cylinder Rotation Speed-Swing Mechanism Drive Motor Voltage Value Conversion Table
94 Voltage value memory of motor for driving swing mechanism during cleaning
95 Voltage value memory of the motor for driving the swing mechanism during printing
96 Nozzle for cleaning liquid ejection
97 Drain receptacle (cleaning doctor)
100, 110, 130 Gear train
120 electromagnetic clutch
150 Printer control device

Claims (7)

 A swing roller capable of rotating in the circumferential direction and reciprocating along the axial direction, a swing width adjusting mechanism for adjusting the swing width of the swing roller, and a swing width adjusting means for operating the swing width adjusting mechanism; A swing mechanism that reciprocally moves the swing roller; and a swing mechanism driving unit that operates the swing mechanism. During printing, the swing roller is rotated by a driving motor on the machine side that drives the printing press. Is controlled so that the swinging roller is rotated by the swing mechanism driving means during the cleaning operation, and the swinging roller driving means is rotated during the cleaning operation. An ink supply device for a rotary printing press, comprising: a control means for controlling the swing width adjusting means so that the swing roller has a preset swing width. . A swing roller that can rotate in the circumferential direction and can reciprocate along the axial direction, a swing mechanism that reciprocates the swing roller, a swing mechanism driving means that operates the swing mechanism, and the number of swings of the swing roller are , so that a specified value corresponding to the rotational speed of the plate cylinder, on the basis of the rotational speed of the plate cylinder, to control the operation of the swing mechanism drive means, said oscillating roller is a plate cylinder during cleaning operations An ink supply device for a rotary printing press, comprising control means for controlling the swing mechanism driving means so as to have a predetermined number of swings unrelated to the number of rotations . The control means controls to rotate the swing roller by a driving motor on the machine side that drives the printing press during printing, and to rotate the swing roller by the swing mechanism driving means during a cleaning operation. An ink supply device for a rotary printing press according to claim 2.  It comprises a kneading roller that can rotate in the circumferential direction and is supported so as not to move in the axial direction, and the control means controls the kneading roller to be rotated by the swing mechanism driving means during a cleaning operation. An ink supply device for a rotary printing press according to claim 1 or 3.  A kneading roller that can rotate in the circumferential direction and is supported so as to be immovable in the axial direction, and a washing device that cleans the kneading roller and the shaking roller; A setting means for setting, a memory for storing a setting value of a previous swing width or number of times set by the setting means, and reading the set value from the memory at the end of cleaning, The ink supply device for a rotary printing press according to claim 1 or 2, wherein the ink is returned to the number of times of shaking.  The ink supply device for a rotary printing press according to claim 5, wherein the setting means sets the swing width or the number of swings of the swing roller to a maximum. A swing width adjusting mechanism for adjusting the swing width of the swing roller and swing width adjusting means for operating the swing width adjusting mechanism are provided, and the control means has a specified swing width of the swing roller. The operation of the swing width adjusting means is controlled as described above, and the swing width adjusting means is controlled so that the swing roller has a preset swing width during a cleaning operation. Ink supply device for rotary printing press.

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