JP2001113672A - Apparatus and method for controlling temperature of ink - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for controlling a temperature of an ink for improving printing quality and productivity by controlling the temperature of the ink in an ink fountain by a program, thereby alleviating an operator's working load. SOLUTION: In the apparatus for printing a printing sheet with an ink supplied to a plate by supplying the ink stored in an ink fountain 1 through a fountain roller 8 comprising a motor 20 for driving the roller 8, a controller for driving the motor 20 before starting printing, a setter for setting the temperature of the ink in the fountain 11, and a detector 23 for measuring the temperature of the ink in the fountain 11, the controller compares the temperature of the ink in the fountain set by the setter with that of the fountain measured by the detector 23, and drives the motor 20 until the temperature of the ink in the fountain set to the setter becomes equal to that in the fountain measured by the detector 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for controlling the temperature of ink in an ink fountain in an ink device such as a printing press.

[0002]

2. Description of the Related Art An inking device for a printing press is a vase roller which is rotatably supported by left and right frames, a crevice formed on the peripheral surface and both ends of the vase roller, and a cross section formed by a vase key (ink blade). A triangular ink fountain is provided, and the ink stored in the ink fountain flows out of a gap between the peripheral surface of the ink fountain and the tip of the fountain key and adheres to the peripheral surface of the fountain roller.

[0003] A kneading roller parallel to the kneading roller is supported by a shaft, and the ink adhering to the peripheral surface of the kneading roller is supported by an arm and swings between the kneading roller and the kneading roller. After being transferred to a kneading roller by a transfer roller which reciprocates between the rollers, the transfer roller is uniformly fed in each direction during transfer between a plurality of roller groups, and then supplied to a plate surface on a plate cylinder by a setting roller.

In the inking unit, when a printing operation is newly started, it is desirable that the ink temperature in the ink fountain be kept at an appropriate temperature so that a normal printing operation can always be performed. That is, if the temperature of the ink in the ink fountain is inappropriate, the supply of the ink becomes unstable, and the test printing and the final printing cannot be performed normally.

For this reason, conventionally, the air conditioner in the printing room is always operated, or the printing press is warmed up before the start of the printing operation, so that the printing press approaches the state of continuous operation. I have.

As another method, printing is started in a state where the ink is softened in advance by various means.

[0007]

However, even when the printing operation is started by the former method, the ink often does not always satisfy the required temperature conditions, and it is difficult to ensure sufficient printing quality. Was.

In the latter method, the state of the ink may be unstable. Therefore, the operator always checks the result of the test printing, and supplies the ink directly to the roller group with a spatula, or the ink is excessively supplied. In many cases, correction work such as removing ink was performed. These tasks require high skills, which leads to an increase in operator workload. In addition, these operations are not originally required, which hinders productivity and leads to wasteful consumption of printing materials and the like, thereby increasing production costs.

SUMMARY OF THE INVENTION An object of the present invention is to provide an ink temperature control device and a temperature control device capable of reducing the workload of an operator by controlling the temperature of ink in an ink fountain by a program and improving print quality and productivity. It is to provide a method.

[0010]

According to the present invention, there is provided an ink temperature control apparatus for supplying ink stored in an ink fountain to a plate via a fountain roller, and supplying the ink to the plate. In a device for printing the applied ink on printing paper, a first driving unit for driving the apparatus main body, a second driving unit for driving the fountain roller, and driving the second driving unit before starting printing. And a control device.

[0011] The apparatus further includes a setting device for setting the temperature of the ink in the ink fountain, and a measuring device for measuring the temperature of the ink in the ink fountain. The temperature of the ink in the ink fountain measured by the measuring device is compared with the temperature of the ink in the ink fountain, and the temperature of the ink in the ink fountain set in the setting device and the ink temperature in the ink fountain measured by the measuring device. The second driving means is driven until the ink temperatures become equal.

[0012] Further, the invention is characterized in that a support member for supporting the measuring instrument movably between a measuring position and a retracted position is provided.

[0013] Further, the apparatus further comprises a position detector for detecting a position of the measuring device, wherein the control device drives the second driving means when the position detector detects that the measuring device is at the retracted position. Is stopped.

According to the present invention, there is provided a method for controlling the temperature of ink according to the present invention, wherein ink stored in an ink fountain is supplied to a plate via a fountain roller, and the ink supplied to the plate is supplied to printing paper. In the method for controlling the temperature of the ink in the ink fountain in the apparatus for printing on the fountain, the control device drives the second drive means for driving the fountain roller before printing is started.

The temperature of the ink in the ink fountain is set by a setting device, and the temperature of the ink in the ink fountain is measured by a measuring device. The temperature of the ink in the ink fountain measured by the measuring device is compared with the temperature of the ink in the ink fountain measured by the measuring device. The second drive means is driven until the temperatures of the second drive means become equal.

Further, the measuring instrument is supported by a supporting member so as to be movable between a measuring position and a retracted position.

Further, the position of the measuring device is detected by a position detector, and the control device controls the driving of the second driving means when the position detector detects that the measuring device is at the retracted position. It is characterized by stopping.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an ink temperature control apparatus and a temperature control method according to the present invention will be described in detail with reference to the drawings using embodiments.

FIG. 1 is a side view of a printing press showing an embodiment of the present invention, FIG. 2 is a side view of a main part of the inking unit, FIG. 3 is a side view of a pot roller, and FIG. 3, FIG. 5 is a front view of the operation panel, FIG. 6 is a control block diagram, FIG. 7 is a flowchart of ink temperature control, and FIG. 8 is a flowchart of different ink temperature control. .

As shown in FIG. 1, the printing press 1 includes a paper feeding unit 2, a printing unit 3 including four printing units 3a, 3b, 3c, and 3d, and a paper discharging unit 4. A print quality control device (commonly called PQC) 5 is installed at the rear.

As shown in FIG. 2, the inking device 6 of each printing unit 3a, 3b, 3c, 3d
A fountain roller 8 rotatably supported by the fountain roller; a crevice 9 at the peripheral surface and both ends of the fountain roller 8; and an ink fountain 11 formed by a fountain key 10 having a triangular cross section.
The ink W stored in the container 1 flows out from a gap between the peripheral surface of the fountain roller 8 and the tip of the fountain key 10 by rotation of the fountain roller 8 and adheres to the peripheral surface of the fountain roller 8.

In the vicinity of the pot roller 8, a kneading roller 12 parallel to the pot roller 8 is supported by a shaft, and the ink adhering to the peripheral surface of the pot roller 8 is supported by an arm and swings by the pot roller. After being transferred to the kneading roller 12 by the transfer roller 13 reciprocating between the roller 8 and the kneading roller 12, after being uniformly transferred in each direction during the transfer between the many roller groups 15 including the swing roller 14, , Wearing roller 16
At the plate cylinder 17 on the plate cylinder.

As shown in FIGS. 3 and 4, the shaft end of the pot roller 8 is connected to a motor 20 as a second driving means for driving the pot roller 8, and a first drive for driving the apparatus. The feed amount (rotation amount) is variable by being driven separately from means (not shown). In addition, the pot key 10
Is also driven by a motor (not shown), and its opening amount is variable.

Further, a lower end of a holder 22 is fixed to an intermediate portion in the left-right direction of a rotating shaft 21 provided between the left and right frames 7, and the ink fountain 1 is attached to an upper end of the holder 22.
A detector 23, such as a radiation thermometer, for detecting the temperature of the ink W in 1 is attached.

The detector 23 is movable between a measurement position (first position) and a retracted position (second position) by rotation of the rotary shaft 21, and is fixed to one end of the rotary shaft 21. The position is detected by a detector 25 for confirming the position of the detector via the lever 24 thus set. In this embodiment, the detector 25 is attached to the outer surface of the frame 7 so as to engage with the lever 24 and output an electric signal when the detector 23 is at the measurement position (solid line position in the figure). Has become.

On the other hand, a lever 26 having an arc-shaped long hole 26a is fixedly provided at the other end of the rotary shaft 21.
The pivotal position of the lever 26 is restricted to two positions by a stopper pin 27 slidably fitted in a. That is, the detector 23 is selectively positioned and fixed at the measurement position and the retracted position.

As shown in FIG. 5, the panel 30 of the paper discharge section 4 has a fountain ink temperature presetting device 31 for setting and controlling the ink temperature of the ink fountain 11 and a temperature control for the swing roller 14 of the inking device 6 and the like. , A push button 32 for operating a temperature control system (not shown), six push buttons 33 for selecting a printing unit, and six indicator lights 34 for confirming the position of the detector 23 are provided.

Further, the panel 30 has six push buttons 35 for independently controlling the temperature of the ink W in the ink fountain 11.
And various buttons such as a select switch 36 for selecting a temperature control method and a product start button 37.

Further, the fountain ink temperature presetting device 3
1 is O of the device 31 by the ON-OFF switch 31a.
N-OFF operation, temperature setting by three push buttons 31b, end of temperature control by six display keys 31c, display unit 3
Various functions such as setting temperature display by 1d are provided.

As shown in FIG. 6, a controller 40 built in the print quality control device 5 behind the paper discharge unit 4 has:
Floppy disk or magnetic card drive (41)
The print data recorded on a floppy disk or a magnetic card via an interface, an ink temperature signal from an ink temperature measuring device (detector 23), and a switch group (32, 33, 35, 36, 37, 31a, 31
b) and signals from the indicator light group (34, 31c) are input, and based on these signals, the pot roller driving motor (20) and the pot key driving motor (42) are turned by the rotary encoder (43) or the rotary encoder (43). The ink W in the ink fountain 11 is feedback-controlled by a potentiometer (44).
Of the printing press, and the control device (4
5) and a target temperature setting device (4) for the ink W in the ink fountain 11
6) is controlled.

With this configuration, when starting the printing operation, the operator proceeds with the preparatory operation according to the flowchart of the ink temperature control shown in FIG. 7 or FIG.

That is, the printing units 3a to 3d are selected by the printing unit selection push button 33 on the panel 30 provided on the paper output unit 4 of the printing press 1, and the indicator light indicating the position of the detector 23 is provided. After confirming that 34 is lit,
An ON operation is performed with the push button 32 for the temperature control system (see steps P1 to P5 in FIG. 7).

When the push button 32 is turned on, the controller 40 built in the print quality control device 5 automatically starts controlling the temperature of the ink W stored in the ink fountain 11. In this description, the printing unit 3a
The selection of the printing units 3a to 3d may be performed after the ON operation is first performed with the push button 32 for the temperature control system. At this time, the operation of the paper feeding unit 2 is disabled until the temperature control of the ink temperature described later is completed.

The detector 23 installed at the top of each ink device 6 has a measuring position (first position) for detecting the temperature of the ink W stored in the ink fountain 11, and an ink fountain. The lever 24 is selectively positioned at a retreat position (second position) for retracting the detector 23 when cleaning the sensor 11 and the like. When the detector 23 is at the measurement position, the lever 24 fixed to the rotating shaft 21 is used. Is detected by the detector 25 and the panel 3
The indicator light 34 provided above the illuminator 0 lights up. Since the indicator light 34 is lit, the detector 2 is positioned at the measurement position.
The operator can confirm that 3 is present. When the detector 23 is located at the retracted position, the indicator 24 does not light because the detector 25 does not detect the lever 24. Printing unit 3a
If the indicator light 34 is not turned on even if the user selects ~ 3d, the controller does not control the temperature of the ink W stored in the ink fountain 11.

The temperature of the ink W stored in the ink fountain 11 is controlled by a control program (not shown) on condition that the printing units 3a to 3d are selected and the detector 23 is at the measurement position. Done. When the temperature control is started, the pot key 10 and the pot roller 8 are automatically set to preset values (for example, the opening amount of the pot key 10 is set to zero, and the rotation amount of the pot roller 8 is set to 50%). After the presetting, the pot roller 8 is driven by the driving motor 20.
(See step P7 in FIG. 7).

The temperature of the ink W stored in the ink fountain 11 starts to rise due to the continuous operation of the fountain roller 8, and the detector 23 at the measurement position starts measuring the ink temperature together with the start of control. The optimal temperature of the ink W in the ink fountain 11 is preset by a fountain ink temperature presetting device 31 provided on the panel 30.
The value measured by the detector 23 and the automatic collation are used for each printing unit 3.
This is performed every a to 3d (see step P8 in FIG. 7).

When the temperature of the ink reaches a preset temperature, the display key 31c of the fountain ink temperature presetting device 31 is turned on. Then, the operation of the fountain roller 8 is controlled by a program based on the print data. Key 10
In order to prevent the ink from leaking in the state where the preset has been performed, and to maintain the state of the ink whose temperature has been adjusted, the operation is switched to the necessary low-speed operation (see steps P9 to P12 in FIG. 7). Prior to the start of the printing operation, the operator presses the start button 3 of the product switch.
7 is turned on, the feed amount of the pot roller 8 is automatically switched to the set value of the print data which has already been input to the controller 40 built in the print quality control device 5 (step P16 in FIG. 7). reference).

[0038] All selected printing units 3a-
When the temperature of the ink W stored in the ink fountain 11 of 3d reaches a preset value, the selected display key 31c lights up, indicating that the temperature control of the ink W has been completed. indicate. According to this display, when the various preparatory operations that the operator has proceeded in parallel are completed, all the conditions for starting the printing operation are in a state of being prepared (FIG. 7).
Step P15).

When the temperature control of the ink W is completed, the print data recorded on a floppy disk or a magnetic card has been input to the controller 40 of the print quality control device 5 in advance. Data on the opening amount of the fountain key corresponding to the pattern of the printing plate to be used is continuously preset for each of the printing units 3a to 3d (see step P12 in FIG. 7). When the operator confirms that the preset of the opening amount of the pot key has been completed and turns on the start button 37 of the product switch, the rotation amount of the pot roller 8 is automatically switched to the value set in the print data, and the test printing is performed. The work is started (see steps P15 and P16 in FIG. 7). If the print data has not yet been input to the controller 40, the print data can be independently preset while the temperature control of the ink W is being performed or after the temperature control is completed (step in FIG. 7). P13 and Step P14).

In the select switch 36, "interlock"
"Single" or "cut" can be selected (see step P2 in FIG. 7). When “interlock” is selected, the ink W is linked with the ON operation of the push button 32 for the temperature control system.
Temperature control is performed.

On the other hand, when the temperature of the ink W is to be controlled after the ink W is replaced by a color changing operation or the like, the operation of the temperature control system has already been started.
When the user selects “single” in step 6 and selects the printing units 3 a to 3 d that require temperature control with the push button 35 for setting the fountain ink alone, the temperature of the ink W can be controlled independently (see FIG. 8). Steps P2 and P3).

The independent control of the ink temperature can be performed in parallel with other preparatory work, and the printing unit 3a that is not performing the final printing even when performing the final printing operation.
If it is ~ 3d, the temperature of the ink can be controlled independently. However, in this case, the temperature control of the ink W is performed even if the push button 35 for setting the pot ink alone is operated when the detector 23 is at the retracted position, provided that the detector 23 is at the measurement position. It is not possible. In this case, the detector 23
Is changed to the measurement position, temperature control can be performed (see step P6 in FIG. 8). Select switch 3
When "Cut" is selected in step 6, no temperature control of the ink W is performed even when the detector 23 is at the measurement position or when the printing units 3a to 3d are not performing final printing. .

The fountain ink temperature presetting device 31 has a function of presetting the optimum temperature of the ink W and a function of displaying that the temperature control of the ink W has been completed. The operator turns ON the fountain ink temperature presetting device 31 with the ON-OFF switch 31a, and then presses the push button 3
By operating 1b, the optimum temperature of the ink W is set. In this case, when the operator selects the required individual printing units 3a to 3d with the display keys 31c and inputs the set values,
The input value is displayed on the display unit 31d.

In order to confirm the value set in advance or to change the input set value, the necessary printing units 3a to 3d are selected by the display key 31c.
After confirming the numerical value displayed on the display unit 31d, a necessary operation is performed with the push button 31b. When the temperature control of the ink W starts, the temperature measured by the detector 23 is automatically compared with a set value previously input to the fountain ink temperature presetting device 31, and the temperature of the ink W reaches the set value. Then, the display key 31c is turned on to notify the operator that the temperature control of the ink W has been completed (see steps P8 and P9 in FIG. 7).

The end of the temperature control of the ink W is indicated by the display key 31c by the push button 33 for selecting the printing unit.
Or, only the printing units 3a to 3d selected by the push button 35 for setting the pot ink alone. In the printing units 3a to 3d during actual printing, the ink temperature is measured and the measured value is displayed, and the display key 31c indicating that the measured value of the ink temperature is substantially equal to the set value is turned on. The temperature control of the ink W stored in 11 is not performed.

The present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. For example, the position detecting lever 24 and the position regulating lever 26 of the detector 23 are separately configured, but the position regulating lever 26 and the detector 2
It is also possible to form one combination on one side by combining five.

[0047]

As described above, according to the first aspect of the present invention, the ink stored in the ink fountain is supplied to the plate via the fountain roller, and the ink supplied to the plate is printed on the printing paper. The first driving means for driving the apparatus main body, the second driving means for driving the pot roller, and a control device for driving the second driving means before the start of printing. Before starting printing, the air conditioner of the printing room is always operated, or the printing machine is warmed up before starting the printing operation to bring the printing machine closer to the state of continuous operation. , The temperature of the ink stored in the ink fountain can be controlled appropriately, so that printing can be started with the ink softened in advance by various means, and the operator can directly apply the ink to the roller group with a spatula. Supply or oversupply Without performing the correction operation such removing is ink, can initiate proper printing, depending in, to reduce the workload of the operator, thereby improving the print quality and productivity.

According to the second aspect of the present invention, there is provided a setting device for setting the temperature of the ink in the ink fountain, and a measuring device for measuring the temperature of the ink in the ink fountain. The temperature of the ink in the ink fountain set in the setting device is compared with the temperature of the ink in the ink fountain measured by the measuring device, and the temperature of the ink in the ink fountain set in the setting device and the measurement are performed. The second drive means is driven until the temperature of the ink in the ink fountain measured by the ink container becomes equal, so that the second drive means is provided in addition to the same operation and effect as in claim 1. And the temperature of the ink can be accurately controlled.

According to the third aspect of the present invention, a supporting member for supporting the measuring device so as to be movable between a measuring position and a retracted position is provided. In addition to the functions and effects of the above, the measuring instrument does not hinder the cleaning of the ink fountain or the like.

According to a fourth aspect of the present invention, there is provided a position detector for detecting a position of the measuring device, and the control device detects that the measuring device is at the retracted position. Since the driving of the second driving means is sometimes stopped, in addition to the same operation and effect as in the first aspect, it is possible to avoid a malfunction such as continuing to rotate the pot roller forever.

According to a fifth aspect of the present invention, there is provided a method of controlling ink temperature according to the present invention for achieving the above object, wherein the ink stored in an ink fountain is supplied to a plate via a fountain roller. A method for controlling the temperature of ink in an ink fountain in a device for printing ink supplied to a printing plate on printing paper, wherein the control device drives a second driving means for driving a fountain roller before printing is started. Because the air conditioner of the printing room is always operated, or the printing machine is warmed up before the printing operation is started, and the printing machine is not brought close to the continuous operation state. Before the start, the temperature of the ink stored in the ink fountain can be controlled appropriately, so that printing can be started in a state where the ink has been softened in advance by various means, and the operator can directly apply the ink with a spatula. Roller group Proper printing can be started without performing correction work such as removing ink that has been supplied or oversupplied, thereby reducing the workload of the operator and reducing printing quality and productivity. Improvement can be achieved.

According to the invention of claim 6, the temperature of the ink in the ink fountain is set by a setting device, and the temperature of the ink in the ink fountain is measured by a measuring device. The temperature of the ink in the ink fountain set in the setting device is compared with the temperature of the ink in the ink fountain measured by the measuring device, and the temperature of the ink in the ink fountain set in the setting device and the measuring device Since the second driving unit is driven until the measured temperature of the ink in the ink fountain becomes equal, the second driving unit is provided in addition to the same operation and effect as in claim 5. In addition to unnecessary driving, the temperature of the ink can be accurately controlled.

According to the seventh aspect of the present invention, the measuring device is supported by a supporting member so as to be movable between a measuring position and a retracted position. -In addition to the effect, the measuring instrument does not interfere when cleaning ink fountains.

Further, according to the invention of claim 8, the position of the measuring device is detected by a position detector, and the control device detects when the position detector detects that the measuring device is in the retracted position. Since the driving of the second driving unit is stopped, in addition to the same operation and effect as the fifth embodiment,
It is possible to avoid a malfunction such as continuing to rotate the pot roller forever.

[Brief description of the drawings]

FIG. 1 is a side view of a printing press showing an embodiment of the present invention.

FIG. 2 is a side view of a main part of the ink device.

FIG. 3 is a side view of the same around a pot roller.

FIG. 4 is a view taken in the direction of arrow IV in FIG. 3;

FIG. 5 is a front view of the operation panel.

FIG. 6 is a control block diagram.

FIG. 7 is a flowchart of ink temperature control.

FIG. 8 is a flowchart of another ink temperature control.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 printing machine 2 paper feed section 3 printing section 4 paper discharge section 5 print quality control device 6 inking device 7 frame 8 fountain roller 9 cough 10 fountain key 11 ink fountain 12 kneading roller 13 transfer roller 14 swing roller 15 roller group 16 roller 17 Plate surface 20 Motor 21 Rotating shaft 22 Holder 23 Detector 24 Lever 25 Detector 26 Lever 27 Stopper pin 30 Panel 31 Bottle ink temperature presetting device 31a ON-OFF switch 31b Push button 31c Display key 31d Display section 32 Push button 33 Push button 34 Indicator Light 35 Push Button 36 Select Switch 37 Start Button 40 Controller 41 Floppy Disk or Magnetic Card Drive 42 Urn Key Driving Motor 43 Rotary Encoder 44 Potentiometer 45 Printer Control Device 46 Target Temperature Setter

Claims (8)

[Claims] 1. An apparatus for supplying ink stored in an ink fountain to a plate via a fountain roller and printing the ink supplied to the plate on printing paper, a first driving means for driving the apparatus main body. An ink temperature control device, comprising: a second driving device for driving a jar roller; and a control device for driving the second driving device before printing is started. 2. A setting device for setting the temperature of the ink in the ink fountain, and a measuring device for measuring the temperature of the ink in the ink fountain, wherein the control device includes an ink fountain set in the setting device. The ink temperature in the ink fountain measured by the measuring device is compared with the temperature of the ink in the ink fountain, and the temperature of the ink in the ink fountain set in the setting device and the ink temperature in the ink fountain measured by the measuring device are measured. 2. The method according to claim 1, wherein the second driving unit is driven until the temperature of the ink becomes equal.
An ink temperature control device as described in the above. 3. The ink temperature control device according to claim 2, further comprising a support member that supports the measuring device so as to be movable between a measurement position and a retracted position. 4. The apparatus according to claim 1, further comprising a position detector for detecting a position of the measuring device, wherein the control device drives the second driving means when the position detector detects that the measuring device is at the retracted position. 4. The ink temperature control device according to claim 3, wherein the temperature is stopped. 5. A method for controlling the temperature of ink in an ink fountain in an apparatus for supplying ink stored in an ink fountain to a plate via a fountain roller and printing the ink supplied to the plate on printing paper. Before the start of printing by the control device.
A method for controlling the temperature of ink, comprising driving a second driving means for driving a pot roller. 6. A method for setting the temperature of the ink in the ink fountain with a setting device, and measuring the temperature of the ink in the ink fountain with a measuring device. The temperature of the ink in the ink fountain measured by the measuring device is compared with the temperature of the ink in the ink fountain measured by the measuring device. 6. The ink temperature control method according to claim 5, wherein the second driving unit is driven until the temperatures of the inks become equal. 7. The ink temperature control method according to claim 6, wherein the measuring device is supported by a supporting member so as to be movable between a measurement position and a retracted position. 8. The position detecting device detects the position of the measuring device with a position detector, and the control device controls the driving of the second driving means when the position detecting device detects that the measuring device is at the retracted position. 8. The method according to claim 7, wherein the ink temperature is stopped.