JP5129025B2 - Sheet material monitoring device for sheet material discharging device - Google Patents

Description

  The present invention relates to a sheet-like material monitoring device for a sheet-like material discharge device in a folding machine or the like attached to a rotary offset printing press.

  The web offset press is equipped with a folding machine that cuts the web that has been dried and cooled by the drying / cooling unit after printing at a predetermined length, or folds the web in the width direction or length direction. (See Patent Document 1).

  For folding by this folding machine, a former fold in which the web before cutting is half-folded in the width direction by a former, and a signature after cutting is half-folded in the length direction between the folding cylinder and the first holding cylinder. A parallel one-fold pattern, a parallel two-fold pattern in which a signature that has been subjected to a parallel one-fold pattern is further half-folded (four-folded) in the length direction between the first and second holding cylinders; Parallel to a delta fold in which a signature folded in the length direction between the first holding cylinder and the first holding cylinder is half-folded (rolled) in the length direction between the first holding cylinder and the second holding cylinder. There is chopper folding in which a signature folded once or parallel twice or delta-folded is half-folded by a chopper in a direction parallel to the conveying direction of the signature. These folding methods are selected according to the specifications of the signature and used alone, or some of them are combined.

  By the way, the signature that has been chopper-folded by the above-described folding machine is transported by being sandwiched by a plurality of pairs of transport belts that are spaced apart in the direction orthogonal to the transport direction, until the impeller of the paper discharge device. Is done.

  However, the upstream former and chopper are folded in a direction parallel to the conveyance direction of the signature, and one side of the direction parallel to the conveyance direction is thick and the opposite side is thin, so the conveyance belt and the slipping condition are different. It may not be discharged to the impeller straight, but may be discharged to the impeller in a bent (tilted) state.

JP 2000-95431 A

  Therefore, conventionally, an operator visually checks the signature discharged from the impeller to the paper discharge conveyor to check whether it is bent and discharged, and if it is bent, the folding roller that supports the conveyor belt Narrow the gap between only one end on the delayed side of the two ends to reduce the slip between the signature on the side and the conveyor belt, or widen only the one end on the faster side Measures such as increasing the slip between the signature on the side and the conveyor belt were taken.

  However, as described above, since the operator visually confirms and confirms the signatures discharged to the paper discharge conveyor, the operator is burdened and until the operator confirms after the above-described bending occurs. There was a problem that all the signatures between the sheets became waste paper and a lot of waste paper was generated.

  Accordingly, an object of the present invention is to solve the above-mentioned problem by enabling an operator to monitor the behavior of the leading end in the transport direction at both ends parallel to the transport direction of the sheet-like material discharged to the impeller on time. It is in.

In order to achieve the above object, a sheet-like material monitoring device for a sheet-like material conveyance device according to the present invention is provided.
A pair of rotatable rollers, and
A plurality of pairs of conveyor belts supported by a pair of rollers, provided at intervals in a direction orthogonal to the conveyance direction of the sheet-like material, and conveyed while sandwiching the sheet-like material;
A plurality of blades provided at intervals, each holding a sheet-like material discharged from the pair of conveyor belts between the blades, and an impeller supported rotatably;
In a sheet-like material discharge device comprising:
Provided with an imaging means for photographing the front end in the transport direction of both ends parallel to the transport direction of the sheet-like material discharged from the pair of transport belts to the impeller from a direction perpendicular to the axis of the impeller,
The imaging means picks up an image once for each discharge of the sheet-like material and picks up an image at a rotation phase of the sheet-like material discharge device different from the previous image pickup every time the image pickup is performed.
It is characterized by that.

Also,
The imaging range of the imaging means is such that the leading end of the sheet-like material in the conveying direction is released from the holding of the pair of conveying belts, and of the pair of blades of the impeller that the sheet-like material is discharged between them, It includes a range in which the front end of the sheet-like material in the conveyance direction is not hidden by the blades.

Also,
Each time the image pickup means picks up an image, it picks up an image at a slower rotation phase of the sheet-like object discharging device than at the time of previous image pickup.

Also,
The display device displays images picked up by the image pickup means in time series.

Also,
The display is provided on an operation stand operated by an operator.

  According to the present invention having the above-described configuration, the operator can monitor on-time the behavior of the leading end in the transport direction at both ends parallel to the transport direction of the sheet-like material discharged to the impeller from the image captured by the imaging unit. Therefore, it is possible to quickly deal with the subsequent response, reduce the burden on the operator, and reduce the occurrence of waste paper.

  The imaging range of the imaging means is such that the front end in the conveyance direction of the sheet-like material is released from the holding of the pair of conveyance belts, and the pair of blades of the impeller from which the sheet-like material is discharged is downstream in the rotation direction. By including the range in which the leading edge of the sheet-like material in the conveying direction is not hidden by the blades of the sheet-like material, the leading edge of the sheet-like material in the conveying direction is not obstructed by the blades on the downstream side in the rotation direction, and the behavior of the sheet-like material can be accurately monitored. it can.

  In addition, the imaging means captures an image once for each discharge of the sheet-like material, so that one sheet-like object is imaged many times (so-called continuous shooting) under the high-speed rotation of the sheet-like material discharge device. Unlikely, the image is easily recognized.

  In addition, every time the imaging unit takes an image, the behavior of the sheet-like object can be grasped as a whole by taking an image at a slower rotational phase of the sheet-like object discharging device than the previous imaging.

  In addition, each time the imaging unit captures an image, it can recognize the behavior along the flow of the sheet-like material by imaging at a slower rotation phase of the sheet-like material discharging device than the previous imaging. Easy for operators to understand.

  Further, by displaying the images picked up by the image pickup means in order in time series on the display, the behavior of the sheet-like material can be displayed by so-called frame advance, which is easy for the operator to understand.

  Further, since the display is provided on the operation stand operated by the operator, the operator can easily monitor.

  Hereinafter, a sheet-like material monitoring apparatus for a sheet-like material discharge device according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a rear view of a paper discharge device for, for example, A4 paper discharge of a folding machine showing an embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a plan view of the same, and FIG. 4B is an explanatory view of the support mechanism of the camera, FIG. 5B is an explanatory view of the camera support mechanism, FIG. 5B is an explanatory view of the arrow B of FIG. 5A, FIG. Is a schematic rear view of the folding machine, FIG. 8A is an explanatory diagram of an image showing a good behavior of a signature, FIG. 8B is an explanatory diagram of an image showing an abnormal behavior of the signature, and FIGS. 9A and 9B are diagrams of the control device Block diagrams, FIGS. 10A to 10D are operation flow diagrams of the control device, and FIGS. 11A to 11C are operation flow diagrams of the control device.

  As shown in FIGS. 6 and 7, after printing, the web Wa that has been cooled and dried and led to the paper input portion of the folding machine is sent to each pair of the upper nip roller 10 → the horizontal sewing drum 11 → the lower nip roller 12. The web Wa is then cut to a predetermined size and conveyed to a parallel folding device 13 for folding paper.

  The parallel folding device 13 includes a cutting cylinder 14, a folding cylinder 15, a first holding cylinder 16, and a second holding cylinder 17 that rotate in a direction indicated by an arrow in the drawing.

  The web Wa fed between the cutting cylinder 14 and the folding cylinder 15 is cut into a predetermined size by a cutting blade (not shown) of the cutting cylinder 14 and is held by a needle (not shown) of the folding cylinder 15 to be folded. 15 is wound around the lower peripheral surface.

  The signature (sheet-like material) held by the needle is then held in a holding plate (not shown) of the first holding cylinder 16 in half-fold or ３-folded in cooperation with a knife (not shown) of the folding cylinder 15. However, the signature Wb (see FIGS. 8A and 8B: sheet-like material) is attached to the upper peripheral surface. A predetermined number of knives (not shown) are also provided at positions where the peripheral surface of the first holding cylinder 16 is equally divided.

  The above-mentioned second holding cylinder 17 is in contact with the downstream side of the first holding cylinder 16, and the upstream conveying belt 18 </ b> A and the downstream conveying belt that are paired vertically are arranged downstream of the second holding cylinder 17. 18B is provided, and the chopper folding device 19 is provided near the front portion of the downstream side conveyance belt 18B.

  A plurality of the upstream conveyance belt 18A and the downstream conveyance belt 18B are provided at intervals in a direction orthogonal to the conveyance direction of the signature Wb, and are conveyed with the signature Wb interposed therebetween. The chopper folding device 19 includes a chopper blade 19a that folds a signature Wb stopped by a not-shown pad in a direction parallel to the conveyance direction of the signature Wb.

  Immediately below the chopper folding device 19 is a paper discharge for A4 paper discharge, for example, provided with an impeller 21 and a conveyor 22 via a pair of left and right folding rollers 29 and a pair of left and right conveyance belts 20. A device (sheet-like material discharge device) 23 is provided, and on the downstream side of the chopper folding device 19, an impeller 25 and a conveyor 26 are provided via a conveying belt 24 paired in the front and rear, for example for A3 paper discharge. A paper discharge device 27 is provided. The conveyor belt 20 and the conveyor belt 24 have the same configuration as the upstream conveyor belt 18A and the downstream conveyor belt 18B described above. The impeller 21 and the impeller 25 each have a plurality of blades 21a and 25a provided at intervals, and a signature Wb discharged from the transport belt 20 and the transport belt 24 between the blades 21a and 25a. Is to hold.

  A predetermined number of gripping claws and gripping plates (not shown) are provided at positions where the peripheral surface of the second gripping cylinder 17 is equally divided.

  The first holding cylinder 16 is provided with a cam mechanism (not shown). By this cam mechanism, the rotation phase (position) of the opening of the holding plate of the first holding cylinder 16 is switched in two stages. In addition, it is possible to change to parallel 1-fold, parallel 2-fold and delta folding.

  At this time, also in the folding cylinder 15, the positional relationship between a needle and a knife (not shown) can be adjusted by a double cylinder structure in accordance with the folding specifications. In the second holding cylinder 17 as well, the holding claw and the holding plate are controlled to be switched in three stages by a cam mechanism (not shown) according to the folding specifications.

  That is, at the time of parallel two-folding and delta folding, the signature is further folded by the knife of the first holding cylinder 16 and the holding plate of the second holding cylinder 17, and the holding plate of the first holding cylinder 16 is folded at the time of folding. It opens.

  In the paper discharge device 23 for A4 paper discharge, the conveyance direction front ends of both ends parallel to the conveyance direction of the signature Wb discharged from the conveyance belt 20 to the impeller 21 are connected to the shaft of the impeller 21. A camera (imaging means) 30 that captures an image from an orthogonal direction is provided together with a pair of LED illuminators 31 described later.

  That is, as shown in FIGS. 1 to 3, brackets 34a and 34b are fixedly attached to both front and rear portions of a stay 33 which is installed between the front and rear frames 32a and 32b of the paper discharge device 23. A hanger 35 formed in a square frame shape in a side view is installed between the brackets 34a and 34b using a pipe or a rod-like member. In the illustrated example, both end portions of the upper horizontal shaft portion 35a of the hanger 35 are pivotally supported by brackets 34a and 34b, respectively.

  The camera 30 described above is supported on the hanger 35 in pairs with a pair of front and rear LED illuminators 31 that illuminate the imaging range E, respectively.

  As shown in FIGS. 5A and 5B, the hanger 35 is provided with a split-clamping holder 36 and an L-shaped bracket 37 whose pin part is split-clamped, as shown in FIGS. 5A and 5B. The camera 30 is supported.

  Accordingly, it is possible to finely adjust the photographing position of the camera 30 in the front-rear direction by moving in the axial direction on the upper horizontal shaft portion 35a of the clamping holder 36, and the vertical photographing angle of the camera 30 by rotating around the axis. Can be finely adjusted. Further, the vertical movement of the camera 30 can be finely adjusted by moving the pin portion of the L-shaped bracket 37 in the axial direction, and the shooting angle of the camera 30 can be finely adjusted by rotating the pin portion. Become.

  As the camera 30, for example, a small black-and-white camera with an electronic shutter that realizes high resolution and high-speed reading is used.

  Each of the LED illuminators 31 is supported by a vertical shaft 40 supported by a pair of upper and lower second split fastening holders 39 via a pair of upper and lower first split fastening holders 38 as shown in FIGS. 4A and 4B. At the same time, the pair of upper and lower second split fastening holders 39 are split into the upper horizontal shaft portion 35a and the lower horizontal shaft portion 35b of the hanger 35 described above.

  Accordingly, the longitudinal illumination position of the LED illuminator 31 can be finely adjusted by the axial movement on the upper horizontal shaft portion 35a and the lower horizontal shaft portion 35b of the pair of upper and lower second split tightening holders 39, and the vertical shaft 40 can be adjusted. Fine adjustment of the illumination position in the vertical direction of the LED illuminator 31 can be performed by the upper axial movement. Further, the illumination angle in the front-rear direction of the LED illuminator 31 can be finely adjusted by turning the pair of upper and lower first split fastening holders 38 about the axis on the vertical shaft 40.

  The camera 30 and the LED illuminator 31 are shielded from the outside by a casing-like cover 50 fixed to the hanger 35 by an appropriate means.

  The camera 30 and the LED illuminator 31 are connected to a control device 60 described later. The control device 60 controls the imaging timing of the camera 30 and also controls the switching of the display type when an image captured by the camera 30 is displayed on a display 70 such as a CRT or a display (see FIG. 9A). The power supply to the device 31 can be controlled.

  The display 70 is provided on an operation stand operated by an operator. Accordingly, the camera 30, the LED illuminator 31, the control device 60, the display 70, etc. constitute a sheet-like object monitoring device.

  Then, the operator monitors the image displayed on the display 70 on time. For example, if the signature Wb enters the impeller 21 in parallel (for example, parallel to the reference line) as shown in FIG. On the other hand, if the signature Wb enters the impeller 21 is bent as shown in FIG. 8B (for example, not parallel to the reference line), it is determined as NG. In the case of this NG, the gap between the pair of left and right folding rollers 29 described above may be adjusted. For example, when the contact side on the chopper table is delayed, the gap between the folding rollers 29 on the contact side is narrowed.

  As shown in FIGS. 9A and 9B, the control device 60 includes a CPU 61, a ROM 62, a RAM 63, and input / output devices 64a to 64e all connected by a BUS line. The BUS line includes a display type storage memory M1, a folding machine rotation phase storage memory M2 at the start of imaging, a count value storage memory M3 of a folding machine rotation phase detection counter at the start of imaging, and an imaging end time. Is connected to a memory M4 for storing the folding machine rotation phase, and a memory M5 for storing the count value of the counter for detecting the folding machine phase at the end of imaging.

  Further, on the BUS line, the count value difference storage memory M6 of the folding machine rotation phase detection counter during imaging, the frame feed number storage memory M7, the count value of the folding machine rotation phase detection counter that is shifted each time an image is taken. A storage memory M8, a folding machine rotation phase storage memory M9 during still image shooting, and a count value storage memory M10 of a folding machine rotation phase detection counter during still image shooting are connected.

  Further, on the BUS line, the count value storage memory M11, the image data storage memory M12, the count value N storage memory M13 of the current folder rotation phase detection counter, and the folder rotation phase detection counter up to the imaging position are displayed. The count value storage memory M14 and the count value storage memory M15 of the folding machine rotation phase detection counter during imaging are connected.

  The input / output device 64a includes a display start switch 65, a still image display switch 66, a frame advance image display switch 67, a display end switch 68, an input device 69 such as a keyboard, a display 70 such as a CRT or display, and a printer. Or an output device 71 such as a floppy disk (registered trademark) drive.

  An origin position detection sensor 72 is connected to the input / output device 64b. The origin position detection sensor 72 is composed of a photoelectric sensor or the like, and is attached to a rotating member of the folding machine so as to generate a pulse once every time the folding machine makes one rotation. Here, one rotation of the folding machine refers to the rotation from when one signature starts to be inserted between the blades 21a of the impeller 21 until the next signature starts to be inserted.

  A folding machine rotation phase detection rotary encoder 74 is connected to the input / output device 64 c via a folding machine rotation phase detection counter 73. The folding machine rotation phase detection counter 73 is also connected to the origin position detection sensor 72. The folding machine rotation phase detecting rotary encoder 74 is attached to a rotating member of the folding machine so as to make one rotation every time the folding machine makes one rotation.

  A camera (including a camera control device) 30 is connected to the input / output device 64d.

  A power supply relay 75 to the LED illuminator is connected to the input / output device 64e.

  The control operation of the control device 60 will be described in detail with reference to the operation flowcharts of FIGS. 10A to 10D and FIGS. 11A to 11C.

  First, after 1 (still image type) is overwritten in the display type storage memory M1 in step P1, it is determined in step P2 whether the display start switch 65 is ON. If YES in step P7, the process proceeds to step P7 described later. If NO in step P3, it is determined whether the still image display switch 66 is ON.

  Next, if yes in step P3, 1 (still image type) is overwritten in the display type storage memory M1 in step P4, and then whether or not the frame advance image display switch 67 is ON in step P5. On the other hand, if the determination is negative, the process immediately proceeds to step P5.

  Next, if yes in step P5, the display type storage memory M1 is overwritten with 2 (frame advance image type) in step P6, and then the process returns to step P2. On the other hand, if no, the process returns directly to step P2. .

  Next, when the output to the power supply relay 75 to the LED illuminator is turned on in step P7, the folding machine rotation phase at the start of imaging is read from the memory M2 in step P8, and then in step P9. The count value of the folding machine rotation phase detection counter at the start of imaging is calculated from the folding machine rotation phase at the start of imaging (rotation phase of the sheet discharge device) and stored in the memory M3.

  Next, after reading the folding machine rotation phase at the end of imaging from the memory M4 in Step P10, the count value of the counter for detecting the folding machine rotation phase at the end of imaging is calculated from the folding machine rotation phase at the end of imaging in Step P11. Calculate and store in memory M5.

  Next, in step P12, the count value of the folding machine rotation phase detection counter at the start of imaging is subtracted from the count value of the folding machine rotation phase detection counter at the end of imaging, and After calculating the count value difference and storing it in the memory M6, the frame feed number is read from the memory M7 in step P13.

  Next, in step P14, the count value difference of the folding machine rotation phase detection counter between the imaging is divided by the frame feed number, and the count value of the folding machine rotation phase detection counter that is shifted every imaging is calculated and stored. After storing in M8, the folding machine rotation phase at the time of still image capturing is read from the memory M9 in Step P15. Note that, as shown in FIG. 8A, the folding machine rotation phase at the time of still image capturing is substantially straight with the tip of the blade 21 a on the downstream side in the rotation direction of the impeller 21 at the position of the leading end of the signature Wb without bending. Is the rotational phase.

  Next, in step P16, the count value of the folding machine rotation phase detection counter at the time of still image shooting is calculated from the folding machine rotation phase at the time of still image shooting and stored in the memory M10. With the above operation flow, the initial setting of the imaging timing by the camera 30 of both display types (still image type, frame advance image type) is made.

  Next, in step P17, the output of the origin position detection sensor 72 is read. In step P18, it is determined whether the origin position detection sensor 72 output is ON. If yes, the process proceeds to step P25 described later. If not, it is determined in step P19 whether or not the still image display switch 66 is ON.

  Next, if yes in step P19, after overwriting 1 (still image type) in the display type storage memory M1 in step P20, it is checked in step P21 whether the frame advance image display switch 67 is ON. On the other hand, if the determination is negative, the process immediately proceeds to step P21.

  If yes in step P21, after overwriting 2 (frame advance image type) in the display type storage memory M1 in step P22, it is determined in step P23 whether the display end switch 68 is ON. On the other hand, if it is no, it will transfer to step P23 immediately.

  Next, if yes in step P23, the output to the power supply relay 75 to the LED illuminator is turned off in step P24, and the process returns to step P2. If no, the process returns to step P17.

  Next, after reading the contents of the display type storage memory M1 from the display type storage memory M1 in step P25, it is determined in step P26 whether the content of the display type storage memory = 1.

  Next, if yes in step P26, the count value is read from the folding machine rotation phase detection counter 73 in step P27 and stored in the count value storage memory M11 of the current folding machine rotation phase detection counter. If so, the process proceeds to Step P40 described later.

  Next, in step P28, the count value of the folding machine rotation phase detection counter at the time of still image capturing is read from the memory M10, and in step P29, the current count value of the folding machine rotation phase detection counter = at the time of still image capturing. It is determined whether or not the value is the count value of the folding machine rotation phase detection counter.

  Next, if yes in step P29, the process proceeds to step P36 described later. If no, it is determined in step P30 whether the still image display switch 66 is ON. If yes, in step P31. After overwriting 1 (still image type) in the display type storage memory M1, it is determined in step P32 whether or not the frame advance image display switch 67 is ON. If not, the process proceeds directly to step P32. To do.

  Next, if yes in step P32, after overwriting 2 (frame advance image type) in the display type storage memory M1 in step P33, it is determined in step P34 whether the display end switch 68 is ON. On the other hand, if it is no, it will transfer to step P34 immediately.

  Next, if yes in Step P34, the output to the power supply relay 75 to the LED illuminator is turned off in Step P35, and the process returns to Step P2. If not, the process returns to Step P27.

  Next, after outputting an imaging signal to the camera 30 in the above-described step P36, image data is received from the camera 30 in step P37 and stored in the first area of the image data storage memory M12.

  Next, after the image data is read from the first area of the image data storage memory M12 in step P38, the image data of the first area of the image data storage memory M12 is displayed on the display 70 in step P39. Then, the process returns to Step P17.

  When the content of the display type storage memory M1 is 1, in other words, when the still image type is selected as the display type, the loop of Step P17 → Step P18 → Step P25 to Step P29 → Step P36 to Step P39 is performed. Since the camera 30 always captures images at the folding machine rotation phase at the time of still image capturing and these images are displayed on the display device 70, the still image is displayed on the display device 70 as if still images are displayed. The

  Next, after reading the count value from the folding machine rotation phase detection counter 73 in step P40 described above and storing it in the count value storage memory M11 of the current folding machine rotation phase detection counter, in step P41, when the imaging is started. The count value of the folding machine rotation phase detection counter is read from the memory M3.

  Next, in step P42, it is determined whether or not the current count value of the folding machine rotation phase detection counter = the count value of the folding machine rotation phase detection counter at the start of imaging. If yes, the process proceeds to step P49 described later. On the other hand, if NO, it is determined in step P43 whether or not the still image display switch 66 is ON.

  Next, if yes in step P43, after overwriting 1 (still image type) in the display type storage memory M1 in step P44, it is checked in step P45 whether the frame advance image display switch 67 is ON. On the other hand, if the result is NO, the process immediately proceeds to Step P45.

  If yes in step P45, after overwriting 2 (frame advance image type) in the display type storage memory M1 in step P46, it is determined in step P47 whether the display end switch 68 is ON. On the other hand, if it is no, it will transfer to step P47 immediately.

  Next, if yes in Step P47, in Step P48, the output to the power supply relay 75 to the LED illuminator is turned off and the process returns to Step P2, while if No, the process returns to Step P40.

  Next, after outputting an imaging signal to the camera 30 in the above-described step P49, image data is received from the camera 30 in step P50 and stored in the first area of the image data storage memory M12.

  Next, after the image data is read from the first area of the image data storage memory M12 in step P51, the image data of the first area of the image data storage memory M12 is displayed on the display 70 in step P52. Then, the process proceeds to step P53 described later.

  Next, after the count value N storage memory M13 is overwritten with 1 in step P53, the contents of the display type storage memory M1 are read from the display type storage memory M1 in step P54.

  Next, in step P55, it is determined whether or not the content of the display type storage memory = 1. If yes, the process returns to step P17. If not, the output of the origin position detection sensor 72 is read in step P56. .

  Next, in step P57, it is determined whether or not the output of the origin position detection sensor 72 is ON. If yes, the process proceeds to step P64 described later. If no, the still image display switch 66 is switched in step P58. , It is determined whether it is ON.

  Next, if yes in step P58, after overwriting 1 (still image type) in the display type storage memory M1 in step P59, it is checked in step P60 whether the frame advance image display switch 67 is ON. On the other hand, if the result is NO, the process immediately proceeds to Step P60.

  Next, if yes in step P60, after overwriting 2 (frame advance image type) in the display type storage memory M1 in step P61, it is determined in step P62 whether the display end switch 68 is ON. On the other hand, if it is no, it will transfer to step P62 immediately.

  Next, if yes in Step P62, the output to the power supply relay 75 to the LED illuminator is turned off in Step P63, and the process returns to Step P2. If not, the process returns to Step P54.

  Next, after reading from the memory M8 the count value of the folding machine rotation phase detection counter that is shifted every time an image is taken once in step P64, the count value N is read from the memory M13 in step P65.

  Next, in step P66, the count value of the folding machine rotation phase detection counter shifted every time an image is taken is multiplied by the count value N, and the count value of the folding machine rotation phase detection counter up to the imaging position is calculated and stored. After storing in M14, the count value of the folding machine rotation phase detection counter at the start of imaging is read from the memory M3 in step P67.

  Next, in step P68, the count value of the folding machine rotation phase detection counter up to the imaging position is added to the count value of the folding machine rotation phase detection counter at the start of imaging, After the count value is calculated and stored in the memory M15, the count value is read from the folding machine rotation phase detection counter 73 in step P69 and stored in the count value storage memory M11 of the current folding machine rotation phase detection counter. .

  Next, in step P70, it is determined whether or not the current count value of the folding machine rotation phase detection counter = the count value of the folding machine rotation phase detection counter at the time of imaging. If yes, the process proceeds to step P77 described later. On the other hand, if NO, it is determined in step P71 whether the still image display switch 66 is ON.

  If yes in step P71, after overwriting 1 (still image type) in the display type storage memory M1 in step P72, it is checked in step P73 whether the frame advance image display switch 67 is ON. On the other hand, if the result is NO, the process directly goes to Step P73.

  If yes in step P73, after overwriting 2 (frame advance image type) in the display type storage memory M1 in step P74, it is determined in step P75 whether the display end switch 68 is ON. On the other hand, if it is no, it will transfer to step P75 immediately.

  Next, if yes in Step P75, the output to the power supply relay 75 to the LED illuminator is turned off in Step P76, and the process returns to Step P2. If not, the process returns to Step P69.

  Next, after outputting an imaging signal to the camera 30 in step P77 described above, the count value N is read from the memory M13 in step P78.

  Next, in step P79, 1 is added to the count value N and the storage position is calculated. Then, in step P80, the image data is received from the camera 30 and stored in the (N + 1) th area of the image data storage memory M12. .

  Next, after the image data is read from the (N + 1) th area of the image data storage memory M12 in step P81, the image of the (N + 1) th area of the image data storage memory M12 is displayed on the display unit 70 in step P82. Display data.

  Next, after reading the count value N from the memory M13 in step P83, 1 is added to the count value N in step P84 to calculate the number of times of imaging.

  Next, after the frame advance number is read from the memory M7 in step P85, it is determined in step P86 whether the number of imaging times = the frame advance number.

  Next, if yes in Step P86, the process returns to Step P17. If not, the count value N is read from the memory M13 in Step P87, and then 1 is added to the count value N in Step P88. Overwriting the N storage memory M13, the process returns to step P54. Thereafter, this operation is repeated.

  When the content of the display type storage memory M1 is 2, in other words, when the frame advance image type is selected as the display type, Step P17 → Step P18 → Step P25 → Step P26 → Step P40 to Step P42 → Step By the loop of P49 to Step P57 → Step P64 to Step P70 → Step P77 to Step P88, every time the camera 30 captures an image, the imaging timing is delayed by a fixed rotational phase, and these images are displayed on the display unit 70. By displaying the images sequentially in time series, the images are displayed on the display unit 70 as if the images were being advanced. Further, the folder rotation phase for capturing the frame advance image includes a rotation phase substantially equal to the folder rotation phase at the time of still image capturing.

  In this way, in this embodiment, the operator monitors the behavior of the leading end in the transport direction at both ends parallel to the transport direction of the signature Wb discharged to the impeller 21 from the image captured by the camera 30 on time. be able to.

  As a result, it is possible to quickly cope with the subsequent response (such as adjusting the gap between the pair of left and right folding rollers 29), thereby reducing the burden on the operator and reducing the occurrence of waste paper. .

  Further, the imaging range of the camera 30 (see the imaging range E shown by the chain line in FIGS. 1 to 3) is such that the leading end of the signature Wb in the conveyance direction is released from the nipping of the conveyance belt 20 and the signature Wb is in between. Of the pair of blades 21a of the impeller 21 to be discharged, since the tip in the conveyance direction of the signature Wb is not hidden by the blade 21a on the downstream side in the rotation direction, the conveyance direction tip of the signature Wb is on the downstream side in the rotation direction. The behavior of the signature can be accurately monitored without being disturbed by the blades.

  Further, since the camera 30 captures an image once every rotation of the folding machine (in other words, to one signature Wb), the signature Wb is rotated many times at many positions under the high-speed rotation of the folding machine. Unlike imaging (so-called continuous shooting), it is easy to recognize an image.

  Further, each time the camera 30 takes an image, the imaging position is shifted for each signature Wb by, for example, taking an image at a slower rotation phase of the folding machine than at the time of previous imaging, and these images are displayed on the display 70. Since a so-called frame advance image can be displayed sequentially in sequence, the behavior can be grasped as a whole along the flow of the signature Wb, and the monitoring accuracy by the operator increases.

  Further, since the display device 70 is provided in an operation stand operated by the operator, monitoring by the operator is facilitated.

  In addition, this invention is not limited to the said Example, It cannot be overemphasized that various changes, such as a structure change of the hanger 35 which supports the camera 30 and the LED illuminator 31, are possible in the range which does not deviate from the summary of this invention. .

It is a rear view of a paper discharge device for A4 paper discharge of the folding machine showing an embodiment of the present invention. It is a side view similarly. It is also a plan view. It is explanatory drawing of the support mechanism of a LED illuminator. It is A arrow line view of FIG. 4A. It is explanatory drawing of the support mechanism of a camera. It is B arrow line view of FIG. 5A. It is a schematic structure side view of a folding machine. It is a schematic structure rear view of a folding machine. It is explanatory drawing of the image which shows the favorable behavior of a signature. It is explanatory drawing of the image which shows the bad behavior of a signature. It is a block diagram of a control apparatus. It is a block diagram of a control apparatus. It is an operation | movement flowchart of a control apparatus. It is an operation | movement flowchart of a control apparatus. It is an operation | movement flowchart of a control apparatus. It is an operation | movement flowchart of a control apparatus. It is an operation | movement flowchart of a control apparatus. It is an operation | movement flowchart of a control apparatus. It is an operation | movement flowchart of a control apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 13 Parallel folding apparatus 14 Cutting cylinder 15 Folding cylinder 16 1st holding cylinder 17 2nd holding cylinder 18B A pair of upper and lower downstream conveyance belt 19 Chopper folding apparatus 19a Chopper blade 20 Conveying belt 21 Impeller 21a Blade 22 Conveyor 23 For example, A4 paper discharge Paper discharge device 25 Impeller 26 Conveyor 27 For example, paper discharge device for A3 paper discharge 29 Folding roller 30 Camera 31 LED illuminator 35 Hanger 60 Control device 70 Display Wa Web Wb Signature

Claims (5)

A pair of rotatable rollers, and
A plurality of pairs of conveyor belts supported by a pair of rollers, provided at intervals in a direction orthogonal to the conveyance direction of the sheet-like material, and conveyed while sandwiching the sheet-like material;
A plurality of blades provided at intervals, each holding a sheet-like material discharged from the pair of conveyor belts between the blades, and an impeller supported rotatably;
In a sheet-like material discharge device comprising:
Provided with an imaging means for photographing the front end in the transport direction of both ends parallel to the transport direction of the sheet-like material discharged from the pair of transport belts to the impeller from a direction perpendicular to the axis of the impeller,
The imaging means picks up an image once for each discharge of the sheet-like material and picks up an image at a rotation phase of the sheet-like material discharge device different from the previous image pickup every time the image pickup is performed.
A sheet-like material monitoring device for a sheet-like material discharge device.   The imaging range of the imaging means is such that the leading end of the sheet-like material in the conveying direction is released from the holding of the pair of conveying belts, and of the pair of blades of the impeller that the sheet-like material is discharged between them, The sheet monitoring device for a sheet discharging apparatus according to claim 1, including a range in which the leading end of the sheet in the conveyance direction is not hidden by the blades. 2. The sheet-like object of the sheet-like material discharge device according to claim 1 , wherein each time the imaging unit picks up an image, the sheet-like material discharge device picks up an image at a slower rotation phase than the previous image pickup time. Monitoring device. 4. The sheet-like material monitoring device for a sheet-like material discharge device according to claim 3 , wherein the display unit sequentially displays images picked up by the image pickup means in a time-series manner. 5. The sheet monitoring apparatus for a sheet discharging apparatus according to claim 4 , wherein the indicator is provided on an operation stand operated by an operator.

Images