JP4154637B2 - Picture monitoring device in rotary printing press - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention monitors the pattern on the paper by measuring whether the registration and density of the pattern printed on the paper traveling on the rotary printing press are the same as those of a pre-printed sample. The present invention relates to a pattern monitoring device.
[0002]
[Prior art]
This kind of pattern monitoring device measures a pattern on a running paper with a measuring camera, converts the pattern information into a digital signal or the like, loads it into a controller, and corresponds to the pattern stored in advance by the controller. Comparing with the reference information and sending a signal based on the result from the controller to the control unit of each part for adjusting the design of the printing machine so that the registration and density of the printed pattern matches the reference information To do.
[0003]
In this case, the reference information stored in advance in the controller is obtained by accurately measuring a reference print sample with a measurement camera and converting the image information into a digital signal or the like.
[0004]
By the way, in the conventional picture monitoring device, a reference picture measurement camera that measures a printed sample that is a reference picture and a running picture measurement camera that measures a running picture are provided separately.
[0005]
That is, a single sheet-like print sample is accurately pasted on a print sample measurement panel provided outside the machine, and this is a reference picture measurement camera provided outside the machine facing the print sample measurement panel. Reference information of the pattern corresponding to each position in the running direction and the width direction is measured. On the other hand, the running picture measurement camera is provided at a predetermined position in the machine facing the running paper.
[0006]
[Problems to be solved by the invention]
As described above, it is necessary to use two measurement cameras, the reference pattern measurement camera and the running pattern measurement camera, and the cost is high, and the reference pattern measurement camera and the print sample measurement panel are installed outside the apparatus. There was a problem that the space had to be provided outside the machine, and the installation space became large.
[0007]
The present invention has been considered in view of the above, and it is possible to measure both the pattern of the printed sample and the pattern on the running paper with a single measuring camera provided in the rotary printing press, thereby reducing the cost and installation space. It is an object of the present invention to provide a pattern monitoring device in a rotary printing press that can reduce the size of the image.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the image monitoring apparatus for a rotary printing press according to claim 1 according to the present invention measures a pattern printed on a traveling sheet with a measuring camera facing the pattern, and the measurement information. In a pattern monitoring apparatus in a rotary printing press that monitors a pattern printed on a sheet by comparing and calculating the pattern information of a printed sample that has been measured in advance, the measurement camera is placed at the traveling position of the sheet facing the sheet. A roller device for guiding traveling and a printing sample pasting member are provided, and the printing sample pasting member is movable upward or laterally with respect to the traveling position of the paper facing the measuring camera. and so as not to interfere with the roller device, a measuring camera, measured selectively with the pattern of the paper running through the roller device, both printed swatches adhered to the surface of the printing swatches paste member It has a configuration in which to function.
According to a second aspect of the present invention, there is provided the image monitoring apparatus for a rotary printing press, wherein the image printed on the traveling paper is measured with a measuring camera facing the image, and the measurement information is measured in advance. In a pattern monitoring device in a rotary printing machine that compares and calculates the pattern information of a sample and monitors the pattern printed on the sheet, the traveling camera guides the traveling sheet to the traveling position of the sheet facing the measurement camera. A measuring surface setting roller device is provided in which the traveling surface of the paper can be moved between a measurement position and a retreat position by the measuring camera, and a print sample is provided either above or on the side of the measuring surface setting roller device. A printing sample attaching device having a printing sample attaching member capable of attaching the sample, and the sample attaching member of the sample installing device is attached to the sheet by the measuring surface setting roller device. And the measurement position in the state of the row face retracted position, has a configuration which is movable over a position outside of the measuring position.
According to a third aspect of the present invention, there is provided the pattern monitoring device for a rotary printing press according to any one of the first or second aspect, wherein the direction of travel of the paper at the travel position of the paper facing the measuring camera is the pattern monitoring device for the rotary printing press according to any one of the first or second aspect. The pattern monitoring device for a rotary printing press according to claim 4, wherein the printing sample pasting member is movable upward at a predetermined speed. The structure is supported so as to be movable.
[0009]
[Operation]
Both the print sample and the pattern on the paper are selectively measured by one measuring camera that measures the pattern on the paper printed by the rotary printing press. The measurement of the printed sample can be performed at any time even while the paper is running.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a processing device of a rotary printing machine that is disposed downstream of the printing unit of the rotary printing machine in the paper traveling direction, 2 is a punch hole processing unit thereof, and 3 is a perforation such as a horizontal perforation. The processing unit 4 is a folding unit, and the paper 5 on which a pattern is printed by a printing unit (not shown) is subjected to a marginal punch hole processed on one side or both sides in the width direction by the punching unit 2. Then, the horizontal perforation or the vertical perforation is processed, folded at the folding unit 4 along the horizontal perforation, and conveyed downstream by the conveying device 6. Between the perforation processing unit 3 and the folding unit 4, there is provided a pattern measuring device A for measuring a pattern printed on the paper 5 traveling on the processing device 1.
[0011]
A first embodiment (flat panel pasting type) of the pattern measuring apparatus A will be described below with reference to FIGS. A top guide roller 7 is provided between the perforation processing unit 3 and the folding unit 4 and at a position higher than these, and a top guide roller 7 for projecting the traveling path of the paper 5 upward is provided below the top guide roller 7. An upstream lower guide roller 8 for guiding the sheet 5 from the perforation processing section 3 to the top guide roller 7; and a downstream lower guide roller 9 for guiding the sheet 5 from the top guide roller 7 to the folding section 4. Is provided.
[0012]
A measuring surface setting roller device 10 is provided between the upstream and downstream lower guide rollers 8 and 9 and the top guide roller 7 so as to be movable in a substantially horizontal direction across the upstream and downstream sides of the printing press. The measuring surface setting roller device 10 includes two guide rollers 11 a and 11 b positioned above and below, a bracket 12 that supports both guide rollers 11 a and 11 b, and a cylinder 13 that moves the bracket 12. Yes. The bracket 12 is slidably supported by a guide rod 14 provided on the machine body side. The two guide rollers 11a and 11b are positioned inside the sheet 5 wound around the top guide roller 7, and when the bracket 12 moves (advances) to the upstream side of the machine, the guide rollers 11a and 11b The guide rollers 11a and 11b come into contact with the back surface of the paper 5 on the downstream side of the top guide roller 7 when they are in contact with the back surface upstream of the top guide roller 7 and moved (retracted) downstream. .
[0013]
The stroke of the bracket 12 is guided by the guide rollers 11a and 11b when the surface of the sheet 5 guided by the two guide rollers 11a and 11b reaches the measurement position a when the bracket 12 moves forward. It extends over the range ab so that the surface of the paper is in the retracted position b. At this time, the paper at the measurement position a travels upward from the lower guide roller 8 on the upstream side to the top guide roller 7. This stroke is set so that the paper span of the paper 5 wound around the lower guide rollers 8 and 9 and the top guide roller 7 is the same when the paper 5 is at the position a and when it is at the position b. is there. When the guide rollers 11a and 11b are in the retreat position b, the paper 5 is directly wound around the top guide roller 7 from the lower guide roller 8 on the upstream side and travels behind the measurement position a.
[0014]
A measurement camera 15 is provided at a position facing the measurement position a. The measurement camera 15 is supported by a support base 16 so as to be movable in the perspective direction with respect to the measurement position a, and the support base 16 is supported so as to be movable in the width direction of the paper 5. A feed screw 17 is supported on the support 16 and screwed to the measurement camera 15 side. The feed screw 17 is rotated by a driving device 18 such as a servo motor. Reference numeral 17a denotes a feed screw screwed to the support base 16, and the measurement camera 15 is moved in the lateral direction by rotating the feed screw 17a by a driving device 18a such as a servo motor. A light 19 irradiates light onto the measurement surface at the measurement position a.
[0015]
A flat panel type printing sample setting device 20 is provided above the measuring surface setting roller device 10. This printing sample setting device 20 includes guide rods 22 and 22 provided on a mast 21 erected on the machine body side, and a panel 23 provided by the guide rods 22 and 22 so as to be movable in the vertical direction. ing.
[0016]
The panel 23 moves in the vertical direction at a position where the front surface thereof coincides with the measurement position a. As a moving means of the panel 23, a feed screw 25 rotated by a driving device 24 such as a servo motor provided on the back surface of the panel 23 is screwed to a nut member 21a provided on the mast 21 side. The panel 23 is moved in the vertical direction over a predetermined stroke by rotating the feed screw 25 by the driving device 24.
[0017]
The operation of the first embodiment will be described below. In order to measure the printed sample, the measuring surface setting roller device 10 is first retracted to the retracted position b. Then, after the printing sample B is pasted on the surface of the panel 23 positioned on the upper side, the panel 23 is moved downward. At this time, since the sheet 5 is traveling behind the measurement position a, the panel 23 does not interfere with the sheet 5. In this state, the panel 23 is moved upward at a predetermined speed, and the pattern of the print sample B attached to the panel 23 is scanned and measured by the measuring camera 15 during this time, and the information is captured and stored in a controller (not shown). Keep it.
[0018]
With the panel 23 moved upward, the measurement surface setting roller device 10 is advanced to the measurement position a. As a result, the traveling paper 5 passes through the measurement position a, and the pattern on the traveling paper 5 is measured by the measurement camera 15. Then, the controller compares the measurement result with the printed sample information and monitors whether the pattern and density of the pattern printed on the paper 5 match the pattern of the printed sample B.
[0019]
At this time, when the paper 5 has a single width, the measurement camera 15 can be fixed and measured at a position indicated by a solid line in FIG. taking measurement.
[0020]
A known camera is used as the measurement camera 15, and there are a strobe method and a method of reading in synchronization with a signal in the line direction.
[0021]
Next, a second embodiment (endless belt attaching type) of the pattern measuring device A will be described with reference to FIGS. A measuring surface setting roller device 10 a is provided between the perforation processing unit 3 and the folding unit 4. The measuring surface setting roller device 10a has substantially the same configuration as that of the first embodiment described above, and guide rollers 11a and 11b positioned above and below are supported by the bracket 12, and the bracket 12 is The cylinder 13 is moved in the front-rear direction. When the bracket 12 moves forward, the paper 5 wound around the upper and lower guide rollers 11a and 11b is positioned at the measurement position a, and when it moves backward, it does not interfere with an endless belt type print sample setting device 20a described later. It has come to recede until. At this time, the paper 5 is wound around the upper guide roller 11a of the measuring surface setting roller device 10a, and the paper span at this time is when the measuring surface setting roller device 10a reciprocates to the front and rear stroke ends. It has not changed.
[0022]
A measurement camera 15 is opposed to the surface of the paper 5 at the measurement position a. An endless belt type printing sample setting device 20a is provided in front of the measuring surface setting roller device 10a. The print sample setting device 20a is configured as shown in FIG. 5, and the endless belt 30 is wound around guide rollers 32a and 32b supported by a frame 31 so as to move in the vertical direction. The frame 31 is supported by guide rods 33, 33 provided on the machine body side so that the endless belt 30 can move over a position on the front side of the measuring surface setting roller device 10a and a position where the endless belt 30 is disengaged laterally from the machine body. It has become. The front side surface of the endless belt 30 is made to coincide with the position of the measurement position a described above. The endless belt 30 is driven by a drive device 34 such as a servo motor.
[0023]
The operation of the second embodiment will be described below. In order to measure the printed sample, the printed sample B is attached to the front side surface of the endless belt 30 of the printed sample setting device 20a located on the side of the machine body. Thereafter, the measuring surface setting roller device 10a is retracted, and the printing sample setting device 20a is moved to the machine body side. In this state, the print sample B attached to the front side of the endless belt 30 is positioned at the measurement position a, and this is measured by the measurement camera 15. At this time, the endless belt 30 is caused to travel by the drive device 34, the printed sample B is scanned and measured by the measurement camera 15, and the information is captured and stored in a controller (not shown).
[0024]
Next, the printing sample setting device 20a is moved out of the apparatus, and the measurement surface setting roller device 10a is advanced to the measurement position a. As a result, the traveling paper 5 passes through the measurement position a, and the pattern is measured by the measurement camera 15 on the traveling paper 5. Then, the controller compares the measurement result with the printed sample information and monitors whether the pattern and the density of the pattern printed on the paper 5 match the pattern of the printed sample B.
[0025]
Next, a third embodiment (rotary drum pasting type) of the pattern measuring apparatus A will be described with reference to FIGS. Between the perforation processing part 3 and the folding part 4 shown in FIGS. 1 and 4, a top guide roller 40, a lower side than the top guide roller 40, and an upstream side and a downstream side on the upstream side and the downstream side. Lower guide rollers 41 and 42 are provided, and the paper 5 is wound around these guide rollers. The measurement position a is traveled between the lower guide roller 41 on the upstream side and the top guide roller 40. A measurement camera 15 is installed opposite to the paper 5 traveling at the measurement position a.
[0026]
The measurement camera 15 is the same as that in the first embodiment, and is supported by the support base 16 so as to be movable in the perspective direction with respect to the measurement position a. 5 is supported so as to be movable in the width direction.
[0027]
The measurement camera 15 in this embodiment is supported so as to be rotatable in the vertical direction with respect to the airframe, and can be rotated upward by about 20 ° from the horizontal posture facing the measurement surface of the paper 5 at the measurement position a. It has become. Reference numeral 43 denotes a handle that is fixed at both the rotational positions.
[0028]
A rotary drum type print sample installation device 20b is provided above the top guide roller 40. The printing sample setting device 20b is configured as shown in FIGS. 6 and 7, and a rotating drum 44 is rotatably supported by a frame 45, and is rotated by a driving device 46 such as a servo motor. It has become. Two guide rods 47, 47 are provided in parallel on the frame 45 that supports the rotating drum 44, and these guide rods 47, 47 are supported on the machine body side so as to be movable in the width direction thereof. As a result, the rotary drum 44 can move to the inside position of the machine body of the printing press and to the outside in the width direction (front side) of the machine body. A handle 48 is gripped at this time.
[0029]
The rotating drum 44 is disposed at a position facing the outer peripheral surface of the measurement camera 15 in a state where the measurement camera 15 is rotated upward, and at the same position as the distance from the measurement camera 15 to the measurement position a of the paper 5. ing.
[0030]
The operation of the third embodiment will be described below. In order to measure the printed sample, the printed sample B is attached to the rotary drum 44 of the printed sample setting device 20b located on the side of the machine body. Thereafter, the rotary drum 44 is moved toward the machine body with the handle 48. At the same time, the measuring camera 15 is rotated upward so as to face the peripheral surface of the rotating drum 44, and the rotating drum 44 is rotated at a predetermined rotational speed to scan the pattern of the print sample B, and information thereof is not shown. Capture and store in the controller.
[0031]
Next, the measurement camera 15 is rotated downward so as to face the measurement position a side of the paper 5 traveling on the measurement camera 15, and the pattern is measured by the measurement camera 15 on the paper 5 traveling at the position a. The measurement result is compared with the printed sample information by the controller, and the pattern on the paper 5 with respect to the pattern of the printed sample B is monitored.
[0032]
【The invention's effect】
According to the present invention, it is possible to measure both the pattern of the printed sample and the pattern on the running paper with one measuring camera provided in the rotary printing press, and the measuring camera is used for the printed sample and the running paper. The cost can be reduced as compared with a conventional apparatus using two measurement cameras. Moreover, the installation space for the measurement camera is sufficient for one unit, and the installation space for the entire machine can be reduced.
[Brief description of the drawings]
FIG. 1 is a front view showing a first embodiment of the present invention.
FIG. 2 is a perspective view showing an essential part of the first embodiment of the present invention.
FIG. 3 is a plan view showing a first embodiment of the present invention.
FIG. 4 is a front view showing a second embodiment of the present invention.
FIG. 5 is a perspective view showing an essential part of a second embodiment of the present invention.
FIG. 6 is a front view showing a third embodiment of the present invention.
FIG. 7 is a partially broken plan view showing a third embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Processing apparatus, 2 ... Punch hole processing part, 3 ... Perforation processing part, 4 ... Folding part, 5 ... Paper, 6 ... Conveyance apparatus, 7, 40 ... Top guide roller, 8, 9, 41, 42 ... Lower Guide roller, 10, 10a ... measurement surface setting roller device, 11a, 11b, 32a, 32b ... guide roller, 12 ... bracket, 13 ... cylinder, 14, 22, 33, 47 ... guide rod, 15 ... measurement camera, 16 ... support base, 17, 17a, 25 ... feed screw, 18, 18a, 24, 34, 46 ... drive device, 19 ... light, 20, 20a, 20b ... print sample setting device, 21 ... mast, 23 ... panel, 30 ... Endless belt, 31 ... Frame, 44 ... Rotating drum, 48 ... Handle, A ... Picture measuring device, a ... Measuring position, b ... Retracting position.

Claims (4)

The pattern printed on the running paper is measured with the measuring camera facing it, and the measurement information is compared with the pattern information of the printed sample that has been measured in advance, and the pattern printed on the paper is monitored. In the pattern monitoring device in a rotary printing press,
A roller device for guiding the travel of the paper and a print sample pasting member are provided at the travel position of the paper facing the measurement camera,
The printing sample pasting member can be moved either upward or laterally with respect to the travel position of the opposing paper so that the measurement camera does not interfere with the roller device,
A picture monitoring apparatus for a rotary printing press, wherein the measurement camera is capable of selectively measuring both a picture of a paper traveling by a roller device and a printed sample attached to the surface of a printed sample attaching member. The pattern printed on the running paper is measured with the measuring camera facing it, and the measurement information is compared with the pattern information of the printed sample that has been measured in advance, and the pattern printed on the paper is monitored. In the pattern monitoring device in a rotary printing press,
A measuring surface setting roller device is provided that guides the traveling paper to the traveling position of the paper facing the measurement camera, and allows the traveling surface of the paper to move between the measurement position and the retreat position by the measurement camera,
In addition, a printing sample setting device having a printing sample attaching member capable of attaching a printing sample to either one of the upper side or the side of the measuring surface setting roller device is provided,
The sample attaching member of the sample setting device is movable between the measurement position when the paper traveling surface by the measurement surface setting roller device is in the retracted position and a position outside the measurement position.
A pattern monitoring device for a rotary printing press. 3. The printing sample pasting member can be moved upward at a predetermined speed, with the traveling direction of the sheet at the traveling position of the sheet facing the measurement camera being upward. The pattern monitor in the rotary printing machine of description. 4. The pattern monitoring device for a rotary printing press according to claim 1, wherein the measurement camera is supported so as to be movable in the width direction of the paper.

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