JP4824134B2 - Semi-automatic device for switching work of offset rotary press - Google Patents

Description

  The present invention relates to a semi-automated apparatus for switching work of an offset rotary press. Specifically, each device is automatically operated in order only by an operator pressing a switch.

Conventionally, in an offset rotary press, when switching from the previous job to the next job, the operator has operated each device in order to operate it, which has a problem that it takes time and burdens the operator.
That is, after the previous job is finished, the printing unit is stopped, the blanket is washed on the rubber cylinder, the printing plate is replaced, and the new web roll is replaced from the old web roll. In order to prepare for the next job, various printing presets (for example, setting of the ink fountain key opening, ink fountain roller rotation amount, dampening water supply amount, folding machine setting to values according to the new pattern image) Etc.) in order.

In the above-described prior art, when switching from the previous job to the next job, the operator operates each device in order to operate it, so that it takes time and burdens the operator.
An object of the present invention is to solve the above-mentioned problem by causing each device to automatically operate in order only by an operator pressing a switch three times.
Further, the operator can manually change the paper transport path in the folding machine before the operator's second switch operation, and the operator can visually confirm that there is no plate replacement error and no paper breaks before the operator's third switch operation. By doing so, the purpose is also to be able to do at a low cost.

  A semi-automated apparatus for switching work of an offset rotary press according to the present invention that achieves such an object is a continuous belt-like body in which a belt-like body of a new web roll is pasted on a belt-like body of an old web roll and the belt-like body is continuously supplied Supply means, plate changing means for changing the printing plate supported on the plate cylinder in the printing unit, folding means switching means for switching the folding machine according to the folding specifications for the next printing, In an offset rotary press equipped with an ink supply means capable of reducing the ink amount to the reference ink film thickness distribution and superimposing the ink film thickness distribution corresponding to the next printing on the reference ink film thickness distribution, the previous printing A switch for switching to the next printing is provided, and the ink amount is reduced to the reference ink film thickness distribution by the ink supply means in response to the first signal from the switch by the operator's first switch operation. And the web roll is spliced by the belt continuous supply means, and then the offset rotary press is stopped, and the printing is performed according to the second signal from the switch by the operator's second switch operation. After operating the plate changing means and the folding specification changing means of the folding machine, the printing unit is stopped, and the reference ink film thickness distribution according to the third signal from the switch by the operator's third switch operation The ink supply device is operated so that the ink film thickness distribution corresponding to the next printing is superimposed on the ink.

In the semi-automatic apparatus for switching work of the offset rotary press according to the present invention, when switching from the previous job to the next job, each apparatus automatically operates in turn only by pressing the switch three times. The time can be shortened and the burden on the operator can be reduced.
Furthermore, after a plurality of processes executed by the operator's first switch operation is completed, the operator can manually change the paper transport path in the folding machine before the operator's second switch operation, After multiple processes executed by the operator's second switch operation are completed, before the operator's third switch operation, the operator can visually confirm that there are no plate replacement mistakes and no paper out, contributing to cost reduction. To do.

1 is an overall external view of an offset rotary press according to an embodiment of the present invention. FIG. 6 is an explanatory diagram of a sheet feeding device. It is sectional drawing of a printing unit. It is explanatory drawing of an ink supply apparatus. It is a flowchart which shows the some process A performed by the deceleration washing | cleaning switch ON. It is a flowchart which shows the some process C performed by automatic driving | operation start switch ON. It is a time chart which shows the feed speed of a web. It is explanatory drawing of an ink film thickness. It is a flowchart which shows the some process B performed by plate change and folding specification changeover switch ON. It is explanatory drawing of cam switching. It is explanatory drawing of guide switching.

  The present invention will be described below with reference to the embodiments shown in the drawings.

An offset rotary press according to an embodiment of the present invention is shown in FIG.
The offset rotary press shown in FIG. 1 operates each device continuously so that the switch from the previous job to the next job can be automatically performed by pressing three switches. , A plurality of printing units 200, a dryer 300, a cooling device 400, a web pass device 500, a drag device 600, a folding machine 700, and the like.

As shown in FIG. 2, the paper feeder 100 has two web rolls 101 and 102 wound in a roll shape attached to both ends of a turret arm 104, and the turret arm 104 is pivotally attached to a central shaft 103. When the web (printing paper) 10 is unwound from one web roll 101 and approaches the end, the web from the next web roll 102 is continuously connected and sent to the next printing unit 200.
As shown in FIG. 3, each printing unit 200 has rubber cylinders 201 and 202 and plate cylinders 203 and 204 arranged vertically symmetrically with respect to the web 10 that runs horizontally, and blanket cleaning is performed on each rubber cylinder 201 and 202. While the apparatuses 205 and 206 are provided, the plate cylinders 203 and 204 are provided with automatic plate changers (APCs) 207 and 208, respectively.

The upper automatic plate changer 207 is provided with a guide frame 211 so as to be pivotable about a support shaft 209 and can be moved from a standby position to a plate change position by an actuator 213 as indicated by a broken line in the figure. The frame 211 is provided with a holder 215 for holding an old version or a new version.
Accordingly, after the guide frame 211 is moved to the plate replacement position, the old plate is disengaged from the plate cylinder 203 and the plate cylinder 203 is rotated in the reverse direction, thereby guiding the old plate along the guide frame 211 and an actuator (not shown). The old version can be raised by expanding and contracting.
Thereafter, the new plate is supplied to the plate cylinder 203 along the guide frame 211, and the plate cylinder 203 is rotated forward to mount the new plate on the plate cylinder 203.

Similarly, the lower automatic plate changer 208 is provided with a guide frame 212 so as to be pivotable about the support shaft 210 and can be moved from the standby position to the plate change position by the actuator 214 as indicated by a broken line in the figure. The guide frame 212 is provided with a holder 216 for holding an old version or a new version.
Therefore, after the guide frame 212 is moved to the plate replacement position, the old plate can be lowered along the guide frame 211 by releasing the engagement of the old plate from the plate cylinder 204 and rotating the plate cylinder 204 in the reverse direction.
Thereafter, the new plate is supplied to the plate cylinder 204 along the guide frame 212, and the plate cylinder 204 is rotated forward to mount the new plate on the plate cylinder 204.
Further, an ink supply device 800 as shown in FIG. 4 is provided for the printing plates on the plate cylinders 203 and 204.

The ink supply device 800 supplies ink 802 in the ink fountain 801 to the ink fountain roller 803 by adjusting the opening degree of the ink fountain keys 804-1 to 804-n, and the ink supplied to the ink fountain roller 803 is transferred to the ink transfer roller 805. Is supplied to the printing plate 807 through the ink roller group 806 by the calling operation. In parallel with this ink supply, dampening water 808 is supplied to the printing plate 807 via a water supply roller group 809.
In the ink supply device 800, when the printing plate 807 is replaced from the old plate to the new plate, the opening degree of the ink fountain keys 804-1 to 804-n, the rotation amount of the ink fountain roller 803, and the dampening are set to values according to the pattern of the new plate. Main printing data such as the supply amount of water 808 is preset as will be described later.
The blanket cleaning devices 205 and 206 are devices for removing foreign matters such as ink scum by bringing a brush or cloth into contact with the rubber cylinders 201 and 202.

The dryer 300 is a device that heats and dries the web 10 printed after passing through the printing unit 200.
The cooling device 400 is a device that cools the web 10 after passing through the dryer 300.
The web pass device 500 is a device that changes the direction of the web 10 in order to control the position and tension of the web 10.
The folding machine 700 is a device that cuts and folds the web 10 after drying and cooling.
For example, the former is folded in half in the width direction with the former, cut into a predetermined length with the cutting cylinder, or the folded signature is folded in parallel in the width direction or the length direction with the folding cylinder. In other words, it is a device that folds folded signatures in half in the orthogonal direction with a chopper, and has various structures according to combinations of cutting and folding.

An infeed dancer device 150 is disposed between the paper feeding device 100 and the printing unit 200, and a final unit dancer device 250 is disposed between the printing unit 200 and the dryer 300.
The dancer apparatuses 150 and 250 are apparatuses that take up the slack of the web when the printing unit 200 rotates forward and backward by winding the web between three rolls and moving the center roll up and down.
Although not shown, these devices 200 to 700 are connected by a drive shaft and are driven by a main motor provided in the printing unit 200, and the printing unit 200 and the final unit dancer 250 are connected to each other. It can be disconnected by ON / OFF of a driving clutch provided between them.

  In the offset rotary press having the above-described configuration, when switching jobs, ink film thickness adjustment, web roll replacement, plate replacement, folding specification switching, and the like are performed as follows in accordance with the flowcharts shown in FIGS. A semi-automated device to operate is provided. Moreover, the time chart of the speed of the web at that time is shown in FIG.

(1) Deceleration cleaning switch ON
By turning on the deceleration cleaning switch, a plurality of processes A shown in FIG. 5 are automatically processed in a continuous and parallel manner.
That is, when the previous job is completed, in order to switch the job, the operator first turns on the deceleration cleaning switch at time t1 shown in FIG. 7, thereby starting the deceleration of the web (step S1).
Next, at time t2 in FIG. 7 where the rotational speed of the plate cylinders 203 and 204 becomes S1, the operation of calling the ink transfer roller 805 is stopped, and the supply of ink to the ink roller group 6 is shut off (step S2). .
By continuing printing while decelerating in this state, ink removal is performed, ink on the ink roller group 806 is consumed, and the ink film thickness is gradually reduced.

At the point t3 when the amount of rotation of the plate cylinders 203 and 204 reaches S2, the ink form roller is removed (step S3) and at the same time, the rubber cylinders 201 and 202, which are printing cylinders, and the plate cylinders 203 and 204 are turned off. (Step S4), the ink removal started from the point t2 is finished at the point t3.
In this ink removing, as shown in FIG. 8, the ink film thickness distribution Mb corresponding to the pattern of the old plate formed in the ink roller group 806 is removed at the point t2, and becomes thinner from the upstream to the downstream at the point t3. The minimum ink film thickness distribution Ma ′ required during printing is left.
In FIG. 8, Ma is the minimum ink film thickness required during printing, and Mb is superimposed on the ink film thickness Ma.

Thereafter, at time t4 in FIG. 7, the water supply roller in the water supply roller group 809 is removed (step S5).
Therefore, the ink film thickness distribution on the ink roller group 806 is flattened by the rotation from the point t3, and becomes the minimum ink film thickness Ma required during printing as shown in FIG.
Thus, as a result of the ink film thickness distribution on the ink roller group 806 being the minimum Ma, the printing pattern in the next job is preset as described later without being affected by the printing pattern in the previous job. Then, the ink film thickness distribution corresponding to the printing pattern in the next job is quickly reached.

When the web speed is reduced to 200 rpm, the rubber cylinders 201 and 202 are cleaned by the blanket cleaning devices 205 and 206 at time t5 in FIG. 7 (step S6).
Thereafter, when the blanket cleaning is completed (step S7), the web starts rotating slowly at a time t6 in FIG. 7 at a speed of about 8 rpm (step S8).
On the other hand, simultaneously with the start of the blanket cleaning, the turret arm 104 in the paper feeder 100 is swung (step T1), and then the new web roll 102 is waited at a predetermined paper splicing position (step T2). After starting the dynamic rotation, paper splicing (pasting) from the old web roll 101 to the new web roll 102 is performed (step T3).
As described above, since the time for performing blanket cleaning in the printing unit 200 is utilized to perform the paper splicing operation in the paper feeding device 100, the overall processing time can be shortened.

Subsequently, after the paper splicing is completed, the web starts rotating at a low speed of about 200 rpm at time t7 in FIG. 7 (step S9).
Since the low-speed rotation is faster than the slow rotation, the paper seam can be quickly fed and discharged from the folding machine 700.
Thereafter, the machine (only the printing unit 200) is stopped at time t8 in FIG. 7 (step S10).
Then, the operator manually changes the paper path in the drag 600 device and the folding machine 700, so-called paper path (step S11).
After the paper path is changed, paper feeding is performed and it is confirmed that the paper passes through the cutting cylinder in the folding machine 700 (step S12), and the machine is stopped (step S13).
After the machine stops, the operator checks the paper status (paper breakage, tear).

In addition, between the end of the blanket cleaning (step S7) and the machine stop (step S13), the main printing data preset is started in parallel (step U1).
That is, the main printing data such as the opening degree of the ink fountain keys 804-1 to 804-n, the rotation amount of the ink fountain roller 803, the supply amount of the dampening water 808, and the like are obtained from a computer database (not shown). Read (step U2), the read main printing data is transmitted to the ink supply device 800 (step U3), and the main printing data such as the opening degree is preset in the control device of the ink supply device 800 (step U4).

Since the main printing data preset is performed for each of the upper and lower ink supply devices 800 and for each color, in the case of double-sided multicolor printing, it is necessary to perform the printing data preset eight times in total.
As described above, since the software processing called the main printing data preset is performed in parallel while the hardware processing is performed on the various apparatuses 100 to 700, the overall processing work is shortened.
Note that the actual printing data preset starts after the blanket cleaning (step S7), and is completed until the machine stop (step S13), if it is completed before the automatic plate change described below is completed. It doesn't matter.

(2) Version change / fold specification switch ON
When the operator turns on the plate change / folding specification changeover switch, a plurality of processes B shown in FIG. 5 are automatically processed continuously and in parallel.
As shown in FIG. 9, the plurality of processes B are performed in parallel with automatic plate change and folding specification switching.
That is, when the plate change / folding specification changeover switch is turned on, the rotary press is operated (step V1), and when the folding cylinder of the folding machine 700 reaches a specific position, the driving clutch is turned off (step V2).
The reason why the driving clutch is turned off is that a malfunction occurs in the folding machine 700 due to reverse rotation.

That is, when the web is fed in the reverse direction for automatic plate change in the printing unit 200 as described below, in the folding machine 700 that performs cutting and folding, the signature is dropped from the cylinder and the folding cylinder. .
Next, the final unit dancer 250 is turned on (step V3), and the web fed from the printing unit 200 to the dryer 300 is wound around the up and down rolls so as not to be loosened.
Thereafter, when the plate cylinders 203 and 204 come to a specific position where the plates can be exchanged, the machine (only the printing unit 200) is stopped (step V4).
Then, the plate cylinders 203 and 204 are rotated in the reverse direction, and the old plates are extracted from the plate cylinders 203 and 204 by the automatic plate changers 207 and 208 (step V5).

By reverse rotation of the plate cylinders 203 and 204, the roll of the final unit dancer 250 returns to the original position (step V6), and at the same time, the infeed dancer device 150 is turned on (step V7). Ensure that the web that is fed back to 100 does not sag.
Subsequently, when the extraction of the old version is completed, the machine (only the printing unit 200) is stopped (step V8).
Then, the machine (only the printing unit 200) is rotated forward, and new plates are supplied from the automatic plate changers 207 and 208 to the plate cylinders 203 and 204 and set (step V9).
Further, the final unit dancer 250 is turned on (step V10), the web fed from the printing unit 200 to the dryer 300 is prevented from being loosened, and the roll of the infeed dancer device 150 is returned to the original position (step). V11).

When the setting of the new version on the plate cylinders 203 and 204 is completed, the machine (only the printing unit 200) is stopped (step V12).
On the other hand, after the driving clutch is turned off, the folding machine brake is turned on (step V13), and the folding specifications are switched in parallel.
Here, the folding specification switching consists of folding cylinder / cylinder phase change (step V14) and cam / guide switching (step V15).
Folding cylinder / cylinder phase change means changing the phase of the gripping plate of the gripping cylinder with respect to the needle and knife of the folding cylinder corresponding to parallel 1 diffraction or parallel 2 diffraction. As shown in 63-282053, there is an example of changing by a gear transmission mechanism.
Cam / guide switching is cam switching for switching the phase of the cam mechanism for switching the operation timing of the gripping claws, knives and needles provided on the cutting cylinder, folding cylinder and rod cylinder, and parallel parallel diffraction. It is a general term for guide switching of a guide mechanism for switching between two diffraction and delta folding.

  As shown in FIG. 10, the cam switching includes a cam holder 3 rotatably supported and having protrusions 3 a and 3 b on the outer peripheral surface, and an annular cam 4 attached to the cam holder 3 and having a predetermined outer peripheral surface. A cam follower 15 that relocates on the outer peripheral surface of the cam 4, a link plate 8, a lever 10, an air cylinder 13 and the like that are connected to the protruding portion 3b of the cam holder 3 to rotate the cam holder 3, A first stopper 6 that restricts the rotation of the cam 4 to one side as the cylinder 13 extends, a second stopper 14 that restricts the rotation of the cam 4 to the other side as the air cylinder 13 contracts, And a third stopper 5 for biasing the protruding portion 3a of the cam holder 3 whose rotation to the other side is restricted by the two stoppers 14 in the direction of rotation restricted by the second stopper 14. There are things to be Te (Japanese Patent Application No. 10-301983).

As the guide switching, as shown in FIG. 11, in the parallel folding device of the folding machine in which the first holding cylinder 23 and the second holding cylinder 24 are arranged with their peripheral surfaces in contact with each other, the first holding cylinder 23 and When the belt 21 is hung between the rollers 20a to 20d parallel to this and the predetermined roller 20d is moved so that the belt 21 is folded once in parallel, the belt 21 is changed from the first holding cylinder 23 to the second holding cylinder 24. When the front end of the signature is switched from the first holding cylinder 23 to the guiding position for guiding it to the second holding cylinder 24, conversely, when parallel folding or delta folding, the first holding cylinder 23 and the second holding cylinder 24 are folded in parallel. There is also a switch to a retreat position for retreating from the second holding cylinder 24 (Japanese Patent Application No. 10-266166).
When the plate change and folding specification switching are completed, the driving clutch is turned on (step V16), and the dancer apparatuses 150 and 250 are returned (step V17).
This completes the automatic plate change and folding specification switching.

(3) Automatic operation start switch ON
As described above, after the automatic plate change, folding specification switching, and main printing data preset are completed, the operator checks the paper state and then turns on the automatic operation start switch. A plurality of processes C shown in FIG. 6 are automatically executed continuously and in parallel.
That is, by turning on the automatic operation start switch at time t9 shown in FIG. 7, the machine speed is set to a slow rotation of about 8 rpm, and the standby operation of the dryer 300 is started (step X1). Is started (step Y1).

Folding preset refers to adjusting the position of each control axis in the folding machine 700 corresponding to the next job. Positioning of the former, chopper, etc. according to the paper folding, paper width, quality and thickness. Including doing things.
Although the folding preset is performed in parallel with the standby operation of the dryer 300 as in the present embodiment, it may be performed in parallel with the paper path change described above.
Subsequently, when both the temperature rise completion signal and the folder preset completion signal of the dryer 700 are input (step X2), the web feed speed is increased at time t10 in FIG. 7 (step X3).

Thereafter, when the speed is increased to a certain number of revolutions, the water supply roller 809 is attached and dampening water 808 is supplied (step X4), and the printing cylinders 201 and 202 and the plate cylinders 203 and 204 are attached (step X5). ), The calling operation of the ink transfer roller 805 is started (step X6), and pre-inking is started.
In this pre-inking, the opening degree of the ink fountain keys 804-1 to 804-n and the amount of rotation of the ink fountain roller 803 according to the new printing pattern according to the main printing data preset in the ink supply device 800 corresponding to a new job. The supply amount of the dampening water 808 is adjusted, and the minimum ink film thickness Ma required during printing remaining in the ink roller group 806 (FIG. 8 (a)), depending on the pattern of the new version The ink film thickness distribution Mb is superimposed (FIG. 8B).
When pre-inking is completed, the ink roller group 806 is attached (step X7), and the speed increase is completed when a predetermined printing speed is reached.

As described above, in this embodiment, when switching from the previous job to the next job, the devices 100 to 800 automatically operate in order only by the operator pressing the three switches in order, so that the comprehensive work The time can be shortened and the burden on the operator can be reduced.
In other words, by operating the first decelerating cleaning switch, ink removal, blanket cleaning, web / roll replacement / paper splicing, and printing data presetting can be performed, and blanket cleaning, web / roll replacement.・ Since paper splicing and main printing data presets are executed in parallel, the total work time is reduced.

Further, by operating the second APC and the folding specification changeover switch, the automatic version changer and the folding specification automatic changeover can be performed, and the automatic version changer and the folding specification automatic changeover are executed in parallel. Therefore, the total work time is shortened.
Further, by operating the third automatic operation start switch, the standby operation and folding preset of the dryer 300 can be performed, and the standby operation and folding preset of the dryer 300 are executed in parallel. Overall work time is reduced.

In particular, after the ink reduction, blanket cleaning, and main printing data preset are completed by operating the first deceleration cleaning switch, the operator manually operates the folding machine 700 before operating the second APC and folding specification changeover switch. The paper transport path can be changed, and after the automatic switching between the automatic plate changer and the folding specification automatic switch is completed by operating the second APC and folding specification changeover switch, the third automatic operation start switch is operated. Since the operator can visually confirm that there is no plate replacement mistake and no piece of paper before the operation, the cost can be greatly reduced.
In the above-described embodiment, each switch is operated by providing three switches and pressing them in order. However, only one switch is provided and each device is operated in turn by pressing the switch three times. Needless to say, this may be done.

  The present invention can be widely used industrially as a semi-automated apparatus for switching an offset rotary press.

DESCRIPTION OF SYMBOLS 100 Paper feeder 150 Infeed dancer apparatus 200 Printing unit 207,208 Automatic plate change apparatus 250 Final unit dancer apparatus 300 Dryer 400 Cooling apparatus 500 Web pass apparatus 600 Drag apparatus 700 Folding machine 800 Ink supply apparatus

Claims (1)

A plate that replaces the plate supported on the plate cylinder in the printing unit, and a belt continuous supply means for continuously feeding the belt with the belt of the new web roll and the belt of the old web roll. Exchange means, folding machine fold specification changing means for switching the folding machine state according to the next printing fold specification, and the ink amount can be reduced to the reference ink film thickness distribution, and the reference ink film thickness distribution In an offset rotary press equipped with an ink supply means capable of superimposing an ink film thickness distribution corresponding to the next printing, the offset rotary press includes a switch for switching from the previous printing to the next printing, and the above-mentioned by the first switch operation of the operator In response to a first signal from the switch, the ink supply means reduces the ink amount to a reference ink film thickness distribution, and the web roll roll is spliced by the continuous strip supply means. Thereafter, the offset rotary press is stopped, and the printing plate changing means and the folding specification changing means of the folding machine are operated in accordance with a second signal from the switch by the operator's second switch operation. The printing unit is stopped, and the ink supply is performed so that the ink film thickness distribution corresponding to the next printing is superimposed on the reference ink film thickness distribution in accordance with a third signal from the switch by the operator's third switch operation. A semi-automatic device for switching work of an offset rotary press characterized by operating the device.

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