JP6951984B2 - Roller clearance adjustment system - Google Patents

Description

The present invention relates to a gap adjusting system that adjusts a gap between a pair of rollers that sandwich and convey a sheet.

For example, a newspaper offset rotary printing press includes a paper feeding device, a printing device, a web path device, and a folding machine. The printing apparatus has a plurality of printing units, and each printing unit prints on a sheet unwound from the roll paper. The web pass device vertically cuts a plurality of printed sheets and then superimposes them in a predetermined order, and the folding machine vertically folds a plurality of the superposed sheets, horizontally cuts them, and then horizontally folds the newspaper again. To manufacture.

The folding machine described above is configured such that a saw body and a folding body are arranged so as to face each other below a triangular plate for vertical folding, and a pair of folding rollers are provided below the folding body. Therefore, the plurality of stacked sheets are vertically folded by the triangular plate, then sent between the saw cylinder and the folding cylinder, and horizontally cut to a predetermined length by the saw blade. After that, the plurality of horizontally cut sheets are peeled off from the peripheral surface of the folding cylinder at an intermediate position in the transport direction by a folding blade, and sandwiched by a pair of folding rollers to be horizontally folded into a newspaper.

The pair of folding rollers are laterally folded by pushing the intermediate positions of the plurality of sheets into the gaps between them by the folding blades and passing through the gaps between the pair of folding rollers. Therefore, the gap between the pair of folding rollers is important for accurately laterally folding a plurality of sheets. Then, the gap between the pair of folding rollers needs to be adjusted to an appropriate dimension according to the paper thickness and type of the sheet used for printing. As the roller gap adjusting device, for example, there is one described in Patent Document 1 below.

Japanese Unexamined Patent Publication No. 62-74881

In the conventional gap adjustment work of the pair of folding rollers, the operator manually adjusts the gap of the pair of folding rollers using the roller gap adjusting device. Therefore, there is a problem that a large amount of defective paper is generated between the start of printing and the completion of the gap adjustment work of the folding roller, which increases the printing cost. Further, since the gap adjustment work of the folding roller greatly contributes to the skill level of the worker, the adjustment time varies depending on the worker, and the printing work time may increase.

The present invention solves the above-mentioned problems, and provides a roller gap adjustment system that improves workability and reduces printing costs by appropriately adjusting the gap between a pair of rollers in a short time. The purpose is to do.

The roller gap adjusting system of the present invention for achieving the above object includes a pair of rollers that sandwich and convey a plurality of stacked sheets, a gap adjusting device that adjusts the gap between the pair of rollers, and a gap adjusting device. It includes an information acquisition device that captures paper thickness information of sheets, and a control device that controls the gap adjusting device based on the total paper thickness calculated from the paper thickness information of a plurality of sheets captured by the information acquisition device. It is characterized by that.

Therefore, the control device calculates the total paper thickness from the paper thickness information of the plurality of sheets captured by the information acquisition device, and the gap between the pair of rollers is calculated by the gap adjusting device based on the calculated total paper thickness of the plurality of sheets. Therefore, it is possible to improve workability by properly adjusting the gap between the pair of rollers in a short time, and it is possible to suppress the generation of defective paper and reduce the printing cost. ..

In the roller gap adjusting system of the present invention, the information acquisition device is characterized in that the information acquisition device acquires manufacturing information of the wound paper on which the sheet is wound as the paper thickness information.

Therefore, since the information importing device captures the manufacturing information of the roll-up paper including the paper thickness information, the thickness and the like of the roll-up paper of the same paper type may vary slightly, but a plurality of roll-up papers are based on the roll-up paper manufacturing information. Since the total paper thickness of the sheet is obtained, the gap between the pair of rollers can be adjusted with high accuracy.

In the roller gap adjusting system of the present invention, the information acquisition device is characterized in that when the winding paper is carried into the paper storage, the manufacturing information of the winding paper is taken in.

Therefore, since the information importing device captures the manufacturing information of the winding paper when the winding paper is carried into the paper storage, the control device may use the manufacturing information of the winding paper imported here to improve workability. be able to.

In the roller clearance adjusting system of the present invention, the control device is characterized in that the total paper thickness of the plurality of sheets is reset when the types of the plurality of stacked sheets are changed.

Therefore, when the types of a plurality of sheets are changed, the control device resets the total paper thickness of the plurality of sheets. Therefore, even if the sheets are changed during printing, the total paper thickness of the plurality of sheets is immediately changed. Since it is reset, the gap between the pair of rollers can be adjusted with high accuracy at all times.

In the roller clearance adjusting system of the present invention, the sheet is unwound from a plurality of rolls, and the control device is used from the rolls that have been spliced after the sheets have been spliced from the rolls. It is characterized by changing the paper thickness information of the sheet.

Therefore, after the sheet is spliced from the roll-up paper, the sheet thickness information from the roll-up paper that has been spliced is changed. Therefore, even if the sheet is changed at the time of paper splicing, the sheet thickness information is immediately obtained. Therefore, the gap between the pair of rollers can be adjusted with high accuracy at all times.

In the roller gap adjusting system of the present invention, a storage unit for storing the paper thickness information of the sheet taken in by the information acquisition device is provided, and the control device provides the paper thickness information of the sheet stored in the storage unit. It is characterized in that the gap adjusting device is controlled based on the above.

Therefore, the sheet thickness information captured by the information acquisition device is stored in the storage unit, and the control device controls the gap adjusting device based on the sheet thickness information stored in the storage unit. It can handle different types of sheets.

In the roller gap adjusting system of the present invention, the storage unit is characterized in that it stores a map of the optimum gap between the pair of rollers with respect to the total paper thickness of a plurality of sheets.

Therefore, the control device sets the optimum gap between the pair of rollers using the map based on the paper thickness information of the sheet, and controls the gap adjusting device by the set optimum gap. Therefore, the gap between the pair of rollers Can be adjusted quickly.

In the roller gap adjusting system of the present invention, the pair of rollers sandwiches and folds a plurality of stacked sheets, and the optimum gap is such that a plurality of sheets are appropriately folded by the pair of rollers. It is characterized in that the gap is adjusted by the gap adjusting device at the time.

Therefore, since the storage unit stores the gap adjusted by the gap adjusting device when a plurality of sheets are properly folded by the pair of rollers as the optimum gap, the gap between the pair of rollers can be made highly accurate. Can be adjusted.

In the roller gap adjusting system of the present invention, the information acquisition device can take in the manufacturing information of the sheet, and the control device fills the optimum gap based on the manufacturing information of the sheet in contact with the pair of rollers. It is characterized by changing.

Therefore, since the frictional resistance of the sheet differs with the roller according to the sheet manufacturing information such as the manufacturing company and the paper type, the control device changes the optimum gap based on the sheet manufacturing information in contact with the roller. , It can be adjusted to the optimum pair of roller gaps.

According to the roller gap adjustment system of the present invention, workability can be improved and printing cost can be reduced by properly adjusting the gap between a pair of rollers in a short time.

FIG. 1 is a block configuration diagram showing a printing system of the present embodiment. FIG. 2 is a schematic configuration diagram showing an offset rotary printing press for newspapers. FIG. 3 is a flowchart showing the print setting adjustment work by the printing system. FIG. 4 is a schematic view showing the folding machine. FIG. 5 is a schematic view showing a folding roller. FIG. 6 is a schematic view showing a roller clearance adjusting device. FIG. 7 is a flowchart showing the capture control of the paper thickness for each type of roll paper. FIG. 8 is a flowchart showing the management control of the folding gap with respect to the total paper thickness. FIG. 9 is a flowchart showing the calling and preset control of the total paper thickness. FIG. 10 is a flowchart showing the clearance adjustment control of the rollers. FIG. 11 is a flowchart showing a first modification of the roller clearance adjustment control. FIG. 12 is a flowchart showing a second modification of the roller clearance adjustment control. FIG. 13 is a flowchart showing a third modification of the roller clearance adjustment control. FIG. 14 is a time chart showing a conventional roller clearance adjusting operation. FIG. 15 is a time chart showing the roller clearance adjusting work of the present embodiment.

A preferred embodiment of the roller clearance adjusting system according to the present invention will be described in detail below with reference to the accompanying drawings. The present invention is not limited to this embodiment, and when there are a plurality of embodiments, the present invention also includes a combination of the respective embodiments.

FIG. 1 is a block configuration diagram showing a printing system of the present embodiment.

In the present embodiment, as shown in FIG. 1, the printing system 10 includes a newspaper offset rotary printing press (hereinafter referred to as a printing press) P, and is used for manufacturing information of a plurality of roll papers W managed by the paper storage system 100. The printing machine P is controlled based on the above.

First, a printing machine applied to the printing system of the present embodiment will be described. FIG. 2 is a schematic configuration diagram showing an offset rotary printing press for newspapers.

As shown in FIG. 2, the newspaper offset rotary printing press (printing press) P includes a paper feeding device R, an infeed device I, a printing device U, a web path device D, and a folding machine F. ing. The paper feed device R has a plurality of (7 units in the present embodiment) paper feed units R1 to R7, and the in-feed device I has a plurality of (7 units in the present embodiment) in-feed units I1 to I7. The printing device U has a plurality of (six units in the present embodiment) printing units U1 to U6, and the web path device D has a plurality of (two units in the present embodiment) web path units D1. , D2, and the folding machine F has a plurality of folding units F1 and F2 (two in this embodiment).

In this case, the printing units U1 to U6 have been described as six units, but each of the printing units U1 to U6 can print four colors and is divided into upper and lower parts to print twelve two-color printing units U11 and U12. , U21 ... Can be used as U61, U62. Further, although the two folding units F1 and F2 are described side by side, they are actually an operation side folding unit F1 and a driving side folding unit F2 arranged side by side in a direction orthogonal to the paper surface. Further, although the printing device U is described from two parts, it is only described by dividing it into two in terms of function, and it is actually one device.

The winding paper W is a roll of continuous sheets S. In the paper feed device R, the paper feed units R1 to R7 have substantially the same configuration, and have holding arms for holding the three take-up papers W. The paper feed units R1 to R7 can stop the predetermined take-up paper W at the paper feed position by rotating the holding arm by a predetermined angle. The paper feed units R1 to R7 can continuously feed the sheet S from the paper take-up W by rotating the support shaft in a state where the predetermined take-up paper W is stopped at the paper feed position.

Further, the paper feed units R1 to R7 have a paper joint device (not shown). When the amount of the take-up paper W that is feeding out the sheet S is low, the paper joining device rotates the holding arm by a predetermined angle to move the new take-up paper W in the standby position to the paper feed position, and at the same time, the sheet of the take-up paper W in use. By connecting the sheet S of the new winding paper W to S, paper splicing can be performed. Further, the paper feed units R1 to R7 have an outer diameter measuring device for the take-up paper W (not shown). The outer diameter measuring device for the take-up paper W measures the outer diameter of the take-up paper W for feeding out the sheet S, and when the outer diameter of the take-up paper W becomes equal to or less than a predetermined diameter, the paper joint device is operated. At this time, the outer diameter measuring device of the winding paper W can calculate the thickness of the sheet S unwound from the winding paper W.

In the in-feed device I, the in-feed units I1 to I7 have substantially the same configuration, and the sheets traveling on the printing device U are driven by adjusting the tension of the sheets S fed to the printing units U1 to U6 of the printing device U. The tension of S is stably maintained at an appropriate value. For example, each in-feed unit I1 to I7 has an in-feed roller, a paper presser rubber roller, a dancer roller, a guide roller, and the like. Then, the tension of the seat S is adjusted appropriately by urging the dancer roller in the tension direction of the seat S, and the peripheral speed of the in-feed roller is changed according to the swing of the dancer roller to maintain the proper tension of the seat S. ing.

In the printing apparatus U, the printing units U1 to U6 are multicolor printing printing units capable of performing double-sided four-color printing. However, each printing unit U1 to U6 can be divided into upper and lower printing units U11 to U62, which can perform double-sided two-color printing. Each of the printing units U11 to U62 has substantially the same configuration and includes an ink supply device, a dampening water supply device, an inking roller, a plate cylinder, a blanket cylinder, a drive device, and the like, although not shown.

In the web pass device D, the web pass unit D1 is provided for the printing units U1 to U3, and the web pass unit D2 is provided for the printing units U4 to U6. Each of the web path units D1 and D2 has almost the same configuration, and is a slitter and a vertical cutting that cuts the sheet S along the vertical direction (longitudinal direction of the sheet S, the conveying direction of the sheet S) at the central portion in the width direction thereof. It has a turn bar for setting the transport path of the sheet S, a compensator for adjusting the transport position of the sheet S in the longitudinal direction of the top and bottom, and the like.

That is, each sheet S printed by the printing units U1 to U3 is vertically cut by the web path unit D1 by the slitter, the conveying route is changed by the turn bar, and the conveying position is adjusted by the compensator. Are superimposed in the order of. Further, each sheet S printed by the printing units U4 to U6 is vertically cut by the web path unit D2 by the slitter, the conveying route is changed by the turn bar, and the conveying position is adjusted by the compensator. They are overlaid in order.

In the folding machine F, the two folding units F1 and F2 are arranged on the operation side and the drive side. That is, when a plurality of sheets S1 are stacked and introduced from the web path unit D1, the folding unit F1 vertically folds the sheets S1, horizontally cuts the sheets S1 to a predetermined length, and horizontally folds the sheets S1 to form a tatami mat. , Can be discharged as a newspaper. Further, when a plurality of sheets S2 are stacked and introduced from the web path unit D2, the folding unit F2 vertically folds the sheets S2, horizontally cuts the sheets S2 to a predetermined length, and horizontally folds the sheets S2 to form a tatami mat. , Can be discharged as a newspaper.

As shown in FIG. 1, the paper storage system 100 transports and stores a plurality of roll-up papers W transported from the outside to the paper storage 101, and also carries out the wind-up paper W required for printing and transports it to the printing machine P. It is a thing.

The take-up paper W is conveyed by the truck 102. The take-up paper W loaded on the truck 102 is lowered onto the storage table 103 by a crane at a predetermined position, and is conveyed to a predetermined rack in the paper storage 101 by a carry-in conveyor and held. The bar code reader (information acquisition device) 104 captures the manufacturing information of the winding paper W by reading the barcode written on the winding paper W. This barcode is a numbered number such as a paper manufacturing company, a paper mill, a paper machine, a paper making date, a lot number, and a paper type (type, number of stations, winding width, etc.). The product type is the thickness of the paper (slightly different depending on the paper manufacturing company), the number of reams is the number of printable copies expressed as one unit (1 ream), and the winding width is the winding paper. It is the length in the width direction of W.

Further, when the winding paper W in the paper storage 101 is used in the printing machine P, a plurality of required winding papers W are carried out to the printing machine P. The take-up paper W in the paper storage 101 is carried out to the outside by a carry-out conveyor, the wamp packaged by the wamp unpacking device is removed, and is carried to the transfer device 105. The transfer device 105 carries the take-up paper W from which the wamp has been removed to the paper feed device R of the printing machine P by an automatic guided vehicle (AGV: Automatic Guided Vehicle) 106. The take-up paper W conveyed to the paper feed device R by the automatic transfer vehicle 106 is attached to the holding arm by the automatic attachment machine.

Further, in the paper storage system 100, the paper storage control device 111 can control the paper storage 101, the transfer device 105, the automatic transport trolley 106, and the like, and the manufacturing information of the roll-up paper W read by the bar code reader 104. Is entered. Further, in the paper storage control device 111, the operation unit 112, the display unit 113, and the storage unit 114 are connected. The operation unit 112 is for the operator to input work contents and the like, and the display unit 113 displays the management status of the paper storage 101. The storage unit 114 stores the information of the winding paper W held in the paper storage 101, that is, the manufacturing information of the winding paper W read by the bar code reader 104, the position information of the winding paper W in the paper storage 101, and the like.

On the other hand, in the printing system 10, the printing machine control device 11 can control the printing machine P and can input and output various information to and from the paper storage control device 111 of the paper storage system 100. Further, in the printing machine control device 11, the operation unit 12, the display unit 13, and the storage unit 14 are connected. The operation unit 12 is for the operator to input the printing work contents and the like, and the display unit 13 displays the operating state of the printing machine P. The storage unit 14 stores various print setting values in the printing machine P. Further, since the paper storage control device 111 is connected to the printing machine control device 11 and the manufacturing information of the roll-up paper W held in the paper storage 101 is input from the paper storage control device 111, the storage unit 14 has a storage unit 14. The manufacturing information of the plurality of roll-up papers W managed by the paper storage 101 input from the paper storage control device 111 is stored. In this case, the printing machine control device 11 may receive the manufacturing information of the winding paper W when the winding paper W is carried into the paper storage 101, or when the winding paper W is conveyed from the paper storage 101 to the printing machine P. You may receive the manufacturing information of the roll paper W. Further, the manufacturing information of the winding paper W used by the printing machine P halfway is stored in the storage unit 114. It may be stored in the storage unit 14. The take-up paper W used halfway is held by a hanger (not shown) near the printing machine P or near the paper storage 101.

Before performing the printing work by the printing machine P in the printing system 10, the operator inputs the size and the number of copies of the roll paper W to be used according to the printing job by using the operation unit 12, and prints this information. A command is given to the paper storage control device 111 of the paper storage system 100 via the machine control device 11. The paper storage control device 111 conveys the amount (number) of the wound paper W of the size instructed by the command from the printing machine control device 11 from the paper storage 101 to the printing machine P according to the number of copies to be printed. The printing machine control device 11 takes out the manufacturing information of the winding paper W used for printing from the storage unit 14 in the printing preparation work before the start of printing by the printing machine P, and sets the printing machine P based on the manufacturing information of the winding paper W. Control. In this case, the printing machine control device 11 receives the manufacturing information of the winding paper W and stores it in the storage unit 14 when the winding paper W is conveyed from the paper storage 101 to the printing machine P, but stores the manufacturing information of the winding paper W in advance. If it has been received, the manufacturing information of the winding paper W is taken out from the storage unit 14.

Specifically, at the time of actual printing work or trial printing work, the operator manually performs various types of printing press P by using the thickness and material in the manufacturing information for the predetermined winding paper W. Perform the adjustment work. The optimum print setting value obtained by this adjustment work is stored in the storage unit 14. The optimum print setting value is, for example, a value when the optimum print state is obtained after adjusting the print setting value at the time of printing, or a value after the end of printing, and the manufacturing information and print setting of the roll paper W. The values are associated and stored in the storage unit 14. The printing machine control device 11 takes out the print setting value set according to the manufacturing information of the roll paper W used for printing from the storage unit 14, and controls the printing machine P based on the print setting value.

By the way, as shown in FIG. 2, the printing machine P includes a paper feeding device R, an in-feed device I, a printing device U, a web path device D, and a folding machine F. The paper feeding device R needs to adjust the tension according to the type of the take-up paper W (for example, the paper thickness), and is provided with the adjusting device 21 for adjusting the braking force in the braking device. The in-feed device I also needs to adjust the tension according to the type of the take-up paper W (for example, the paper thickness), and is provided with an adjusting device 22 for adjusting the position of the in-feed roller. The printing device U needs to adjust the output of the drive motor of the drive device according to the type of the take-up paper W (for example, the paper thickness), and is provided with the adjustment device 23 for adjusting the output of the drive motor. The web path device D needs to adjust the traveling position of the sheet S according to the type of the take-up paper W (for example, the paper thickness), and the adjusting device 24 is provided. The folding machine F needs to adjust the nip thickness of the sheet S and the gap between the folding rollers according to the type of the take-up paper W (for example, the paper thickness), and the folding machines F are provided with adjusting devices 25 and 26 for adjusting these. .. Other adjusting devices include an adjusting device for adjusting the supply amount of dampening water, an adjusting device for registering, and the like.

The print setting values set according to the manufacturing information of the winding paper W are the adjustment setting values in the above-mentioned adjusting devices 21, 22, 23, 24, 25, and 26, and the storage unit 14 is the manufacturing information of the winding paper W. This adjustment setting value (print setting value) is associated and stored. The printing machine control device 11 takes out each adjustment setting value (printing setting value) stored in the storage unit 14 based on the manufacturing information of the roll paper W to be printed, and the paper feed device R, in based on the adjustment setting value. The feed device I, the printing device U, the web path device D, and the folding machine F are adjusted.

Further, as described above, the paper feed device R (outer diameter measuring device) calculates the thickness of the sheet S unwound from the take-up paper W by measuring the change in the outer diameter of the take-up paper W within a certain period of time. There is. The roll-up paper W may expand or contract depending on the usage environment, and the thickness may fluctuate. Therefore, as shown in FIG. 1, the printing machine control device 11 corrects the thickness of the sheet S in the manufacturing information of the take-up paper W by the thickness of the sheet S calculated by the paper feed device R. Specifically, the printing machine control device 11 changes the thickness of the sheet S in the manufacturing information of the take-up paper W to the thickness of the sheet S calculated by the paper feed device R. Alternatively, the printing machine control device 11 uses the average value of the thickness of the sheet S in the manufacturing information of the take-up paper W and the thickness of the sheet S calculated by the paper feed device R.

As a print preparation work before the start of printing by the printing machine P, the printing system 10 is based on the adjustment set value (print set value) set according to the manufacturing information of the roll paper W used for printing as described above. The paper feed device R, the in-feed device I, the printing device U, the web path device D, and the folding machine F are adjusted. Therefore, the printing machine P can ensure high-precision print quality from the start of printing without the need for the operator to manually perform the adjustment work. Further, when the amount of the take-up paper W used in the paper feed device R is reduced, the printing machine P performs paper splicing by connecting the sheet S of the new take-up paper W to the sheet S of the take-up paper W in use. At this time, the paper roll W to be used may have a slightly different paper thickness depending on, for example, a paper manufacturing company, a paper mill, a paper machine, a paper type, and the like. Therefore, the printing machine control device 11 determines the changed state of the take-up paper W based on the manufacturing information of the take-up paper W to which the paper is spliced after the operation of the paper splicing device, and when the take-up paper W is replaced, the type of the take-up paper W (paper manufacturing company). , Paper thickness according to paper factory, paper making machine, paper type, etc.), based on the adjustment setting value (print setting value) set according to the manufacturing information of the rolled paper W after the change. , The paper feed device R, the infeed device I, the printing device U, the web path device D, and the folding machine F are adjusted. This adjustment time is when the sheet S from the changed winding paper W arrives.

Here, the print setting adjustment work by the above-mentioned printing system 10 will be described. FIG. 3 is a flowchart showing the print setting adjustment work by the printing system.

In the print setting adjustment work by the printing system 10, as shown in FIGS. 1 and 3, in step S11, the printing machine control device 11 uses the roll paper W with respect to the paper storage control device 111 of the paper storage system 100. The size and the number of copies to be printed are instructed, and the transfer to the printing machine P is instructed. Then, the paper storage control device 111 conveys the amount (number) of the roll-up paper W of the size instructed by the command from the printing machine control device 11 from the paper storage 101 to the printing machine P according to the number of copies to be printed. In step S12, the printing machine control device 11 receives the manufacturing information of the take-up paper W used for printing from the storage unit 14 or the paper storage control device 111. In step S13, the printing machine control device 11 sets the adjustment set value (print set value) set according to the manufacturing information (paper manufacturing company, paper factory, paper making machine, paper type, etc.) of the roll paper W used for printing. Input to the printing machine P to adjust the paper feeding device R, the in-feed device I, the printing device U, the web path device D, and the folding machine F.

In step S14, it is determined whether or not printing by the printing machine P has started, and if it is determined (No) that printing by the printing machine P has not started, the process waits here. Here, if it is determined (Yes) that printing by the printing machine P has started, the printing machine P is printing in step S15. In step S16, it is determined whether or not printing by the printing machine P is completed, and if it is determined (No) that printing by the printing machine P is not completed, is the paper splicing work performed in step S17? If it is determined whether or not the paper splicing work has been performed (No), the process returns to step S15. On the other hand, if it is determined (Yes) that the paper splicing work has been performed, whether or not the type of the take-up paper W (paper manufacturing company, paper mill, paper machine, paper type, etc.) has been changed during the paper splicing work in step S18. To judge.

Here, if it is determined (No) that the type of the winding paper W has not been changed, the process returns to step S15. On the other hand, when it is determined (Yes) that the type of the winding paper W has been changed, in step S19, the printing machine control device 11 determines the manufacturing information of the changed winding paper W (paper manufacturing company, paper factory, making machine, paper type). The adjustment setting value (print setting value) set according to the above) is re-entered into the printing machine P, and the paper feeding device R, the in-feed device I, the printing device U, the web path device D, and the folding machine F are adjusted. ..

Then, in step S16, when it is determined (Yes) that printing by the printing machine P has been completed, the control ends.

Hereinafter, a specific print setting value adjustment system using the printing system of the present embodiment will be described. The roller clearance adjusting system of the present embodiment adjusts the gap between a pair of folding rollers in the folding machine F.

FIG. 4 is a schematic view showing a folding machine, FIG. 5 is a schematic view showing a folding roller, and FIG. 6 is a schematic view showing a gap adjusting device for rollers.

As shown in FIG. 4, in the folding unit F1 of the folding machine F, a drag roller 31 for carrying down the sheets S stacked in a predetermined order by the web path unit D1 is provided at the uppermost portion, and the sheet S is vertically folded. A triangular plate 32 is provided. In the triangular plate 32, a folding cylinder 33 that holds and conveys the sheet S downward and a saw cylinder 34 that horizontally cuts the vertically folded sheet S to form a bundle are arranged so as to face each other. A pair of lead-in rollers 35, a pair of nipping rollers 36, a guide roller 37, and a pair of nipping rollers 38 are provided between the triangular plate 32, the folding cylinder 33, and the saw cylinder 34.

As shown in FIG. 5, the folding cylinder 33 is provided with a needle device 39 facing the peripheral surface of the folding cylinder 33 by 180 degrees. Each of the needle devices 39 has substantially the same configuration, and includes a needle shaft 40 provided along the axial direction of the folding cylinder 33, a needle arm 41 whose base end portion is fixed to the needle shaft 40, and the needle. It has a needle 42 fixed to the tip of the arm 41. The needle device 39 operates in conjunction with the rotation of the folding cylinder 33, and at a predetermined rotation position on the folding cylinder 33, the needle 42 protrudes outward via the needle arm 41, and the traveling direction of the seat S The tip portion of the sheet S can be held, and the needle 42 can be returned via the needle arm 41 at a predetermined position on the folding cylinder 33 to release the holding of the tip portion of the seat S.

Further, the folding cylinder 33 is provided with a saw blade receiver 43 at a position substantially the same as that of the needle device 39 so as to face the peripheral surface of the folding cylinder 33 by 180 degrees, and the saw blade receiver 43 is generally composed of an elastic body such as rubber. Has been done. On the other hand, the saw body 34 is provided with a saw blade 44 supported by a saw stand 45 so as to face the peripheral surface of the saw body 34 by 180 degrees. In this case, the folding cylinder 33 and the saw cylinder 34 rotate synchronously at the same peripheral speed so that the saw blade 44 and the saw blade receiver 43 face each other at regular intervals so that their rotation phases are matched. Therefore, when the folding cylinder 33 and the saw cylinder 34 rotate synchronously and the saw blade 44 and the saw blade receiver 43 face each other and coincide with each other, the sheet S can be horizontally cut to a predetermined length by the saw blade 44.

Further, the folding cylinder 33 is provided with the folding blade 46 being supported by the folding shaft 47 so as to face the peripheral surface of the folding cylinder 33 by 180 degrees, and the folding blade 46 is positioned so as to be substantially 90 degrees out of phase with the needle device 39. ing. The folding blade 46 is configured to form a comb blade shape, and the tip portion thereof can protrude outward from the guide plate 48. The folding blade 46 can rotate in the opposite direction in synchronization with the folding cylinder 33 by the folding shaft 47, and the tip of the folding blade 46 comes from the peripheral surface of the folding cylinder 33 (guide plate 48) at a predetermined position. By projecting outward, the sheet S cut by the saw blade 44 can be peeled off from the peripheral surface of the folding cylinder 33.

The folding cylinder 33 is provided with a pair of folding rollers 49A and 49B below the folding cylinder 33 so as to be rotatable in synchronization with the folding cylinder 33, and a pair of paper guides 50A and 50B on both sides of the folding cylinders 49A and 49B below the folding cylinder 33. Is provided. The pair of folding rollers 49A and 49B are folded sideways by sandwiching the sheet S peeled off from the peripheral surface of the folding cylinder 33 by the folding blade 46 to form a fold (newspaper) N. Can be done. At this time, the pair of paper guides 50A and 50B guide the tatami mat (newspaper) N.

As shown in FIG. 4, the folding rollers 49A and 49B are provided with an impeller 51 below the impeller 51, and a paper discharge conveyor 52 is provided below the impeller 51. The impeller 51 has a plurality of blades 53 in the circumferential direction, and by rotating in synchronization with the folding rollers 49A and 49B, the folding paper N formed by the pair of folding rollers 49A and 49B is formed by the folding rollers 49A and 49B, respectively. It can be sequentially received and delivered on the paper ejection conveyor 52.

Therefore, as shown in FIGS. 4 and 5, the sheet S conveyed to the folding unit F1 is conveyed by the drag roller 31, vertically folded by the triangular plate 32, and then the lead-in roller 35, the nipping roller 36, and the guide. It is sent to the folding cylinder 33 by the roller 37 and the nipping roller 38.

When the vertically folded sheet S reaches the folding cylinder 33, the needle device 39 operates at a predetermined position on the folding cylinder 33 to project the needle 42 outward, thereby piercing and holding the tip of the sheet S. do. If the folding cylinder 33 continues to rotate in this state, the seat S is wound around the peripheral surface of the folding cylinder 33 and held. Then, when the saw blade 44 and the saw blade receiver 43 face each other and coincide with each other at a predetermined position on the folding cylinder 33, the sheet S is horizontally cut to a predetermined length by the saw blade 44. Subsequently, the needle device 39 operates to return the needle 42 to release the holding of the tip portion of the sheet S, and at the same time, the folding blade 46 rotates and the tip portion moves outward from the peripheral surface of the folding cylinder 33. It protrudes and peels the sheet S from the peripheral surface of the folding cylinder 33.

Then, the sheet S peeled off from the peripheral surface of the folding cylinder 33 is folded laterally by being sandwiched by a pair of folding rollers 49A and 49B after the intermediate portion in the longitudinal direction is folded to form a crease. A tatami mat N is formed. Then, the folding book N formed by the folding rollers 49A and 49B is sequentially received by each blade 53 of the impeller 51, and is delivered onto the paper ejection conveyor 52 to eject paper.

Further, the folding unit F1 is provided with a roller gap adjusting device 26 for adjusting the folding gap A between the pair of folding rollers 49A and 49B. As shown in FIG. 6, the gap adjusting device 26 adjusts the folding gap A between the pair of folding rollers 49A and 49B. The intermediate portions of the pair of support arms 61A and 61B are rotatably supported by the support shafts 62A and 62B, respectively. Folding rollers 49A and 49B are rotatably supported at one end of each of the support arms 61A and 61B, and connecting portions 63A and 63B are provided at the other end. The screw shaft 64 is formed with two screw portions 64a and 64b, and the screw portions 64a and 64b are reverse threads. In the screw shaft 64, the screw portion 64a is screwed into the connecting portion 63A, and the screw portion 64b is screwed into the connecting portion 63B. Further, the screw shaft 64 can be rotated in the forward and reverse directions by the drive unit 65.

Therefore, when the screw shaft 64 is rotated in the normal direction by the drive unit 65, the support arms 61A and 61B rotate so that the connecting portions 63A and 63B approach each other, and the folding gap A between the pair of folding rollers 49A and 49B is formed. Expanding. On the other hand, when the screw shaft 64 is reversed by the drive unit 65, the support arms 61A and 61B rotate so that the connecting portions 63A and 63B are separated from each other, and the folding gap A between the pair of folding rollers 49A and 49B is reduced. do.

Hereinafter, an adjustment method using the roller clearance adjustment system of the present embodiment will be described. FIG. 7 is a flowchart showing the capture control of the paper thickness for each type of roll paper, FIG. 8 is a flowchart showing the management control of the folding gap with respect to the total paper thickness, and FIG. 9 is the calling and preset control of the total paper thickness. The flowchart, FIG. 10, is a flowchart showing the clearance adjustment control of the rollers.

The paper thickness capture control for each type of roll paper W is performed when the printing system 10 is performing printing work using the printing machine P. At this time, as described above, the printing system 10 receives the manufacturing information (paper manufacturing company, paper mill, paper machine, paper type, etc.) of the take-up paper W supplied from the paper storage system 100 to each of the paper feeding units R1 to R7. , Is stored in the storage unit 14. In the take-in control of the paper thickness for each type of the take-up paper W, as shown in FIG. 7, in step S21, the printing machine control device 11 transfers the take-up paper W at the time of paper splicing of the take-up paper W in each of the paper feed units R1 to R7. The paper thickness value for the type of W is taken in and stored in the storage unit 14. This paper thickness value is a value corrected by the thickness of the sheet S calculated by the paper feed units R1 to R7 with respect to the paper thickness based on the manufacturing information of the roll-up paper W received from the paper storage system 100. In the present embodiment, the paper thickness value for the type of the take-up paper W is taken in and stored in the storage unit 14 at the time of paper splicing of the take-up paper W in each of the paper feed units R1 to R7, but the timing of taking in is this. Not exclusively. For example, when the paper feeding device R finishes the paper thickness calculation, it may be immediately taken in and stored in the storage unit 14.

In step S22, the printing machine control device 11 averages a plurality of paper thickness values with respect to the stored roll paper W type and manages the paper thickness for each roll paper W type. That is, a plurality of paper thickness values are acquired for one type of roll-up paper W, and the plurality of paper thickness values are averaged to obtain the paper thickness for each type of roll-up paper W. Then, the paper thickness is obtained for a plurality of types of wound paper W.

When the paper thickness for each type of the take-up paper W is obtained, the printing machine control device 11 manages the folding gap A with respect to the total paper thickness of the plurality of sheets S. A plurality of sheets S that are laterally folded through the pair of folding rollers 49A and 49B in the folding units F1 and F2 of the folding machine F are stacked. The optimum folding gap A between the pair of folding rollers 49A and 49B differs depending on the number of sheets S. Therefore, the optimum folding gap A for the total paper thickness of the plurality of sheets S passing between the pair of folding rollers 49A and 49B is obtained in advance.

The management control of the folding gap A with respect to the total paper thickness is also performed when the printing system 10 is performing the printing work using the printing machine P. In the management control of the folding gap A with respect to the total paper thickness, as shown in FIG. 8, in step S31, the printing machine control device 11 determines the paper thickness of the roll paper W used in each of the paper feed units R1 to R7. By taking out from the storage unit 14 and adding the paper thickness of each winding paper W, the total paper thickness of the plurality of sheets S passing between the folding rollers 49A and 49B is calculated.

In step S32, the printing machine control device 11 stores the folding gaps A of the folding rollers 49A and 49B in the folding units F1 and F2 of the folding machine F at the printing machine P performing the printing work. The conditions for storing the folding gap A of the folding rollers 49A and 49B are as follows.
1. 1. 2. Automatically memorize the folding gap A at the end of the printing work of the printing machine P. Manually store the folding gap A at the discretion of the operator. The folding gap A is automatically stored when the folding defect detecting device does not detect the folding defect after the elapse of a preset predetermined period.

In step S32, when the plurality of folding gaps A are stored under the three conditions, in step S33, the printing machine control device 11 stores the plurality of folding gaps A over the past predetermined period stored under the three conditions. The folding gap A is averaged, and this average value is managed as the folding gap A set value with respect to the total paper thickness. In this case, the set value of the folding gap A for each total paper thickness is obtained by averaging the plurality of folding gaps A for each total paper thickness. In step S34, the printing press control device 11 creates a map of the fold gap A with respect to the total paper thickness by using the fold gap A set value for the total paper thickness obtained in step S33. This map is a graph showing the folding gap A with respect to the total paper thickness. The fold gap A with respect to the total paper thickness in this map consists of the actually measured values obtained in steps S32 and S33 and the predicted values obtained by interpolating a plurality of fold gaps A as actually measured values by the least squares method. ..

When a map of the folding gap A with respect to the total paper thickness is created in advance, the printing machine control device 11 uses the gap adjusting device 26 to fold between the pair of folding rollers 49A and 49B during the printing operation by the printing machine P. The gap A is automatically adjusted. In calling and preset control of the total paper thickness, as shown in FIG. 9, in step S41, the printing machine control device 11 is based on the information from the paper storage system 100 and the information stored in the storage unit 14. By adding the paper thicknesses of the sheets S in each of the take-up papers W used in the paper feed units R1 to R7, the total paper thickness values of the plurality of sheets S passing between the pair of folding rollers 49A and 49B are calculated.

In step S42, the printing machine control device 11 calls the folding gap A with respect to the total paper thickness value of the plurality of sheets S passing between the pair of folding rollers 49A and 49B by using the map stored in the storage unit 14. .. Here, the folding gap A with respect to the called total paper thickness value is the measured value or the predicted value described above. Further, among the plurality of sheets S passing between the pair of folding rollers 49A and 49B, each folding roller 49A and 49B comes into contact with the outermost sheet S, and in the case of a newspaper, the cover sheet S. The material (friction resistance) of the sheet S affects the transportation of the sheet S by the folding rollers 49A and 49B. Therefore, in step S43, the printing machine control device 11 corrects the folding gap A according to the manufacturing information of the sheet S in contact with the folding rollers 49A and 49B. For example, if the frictional resistance of the sheet S is larger than the standard value, the folding gap A is increased and corrected, and if the frictional resistance of the sheet S is smaller than the standard value, the folding gap A is reduced and corrected.

Then, in step S44, the printing machine control device 11 controls the gap adjusting device 26 using the obtained folding gap A. That is, the gap adjusting device 26 adjusts the folding gap A between the pair of folding rollers 49A and 49B to the folding gap A obtained in step S43. Then, when the folding gap A between the pair of folding rollers 49A and 49B is set by the gap adjusting device 26, the main printing by the printing machine P is started.

Here, a method of adjusting the folding gap A between the folding rollers 49A and 49B during the main printing by the printing machine P will be described. In the roller clearance adjustment control, as shown in FIG. 10, in step S51, the printing machine control device 11 adds the paper thickness of the sheet S in each take-up paper W used in each paper feed unit R1 to R7. As a result, the total paper thickness α of the plurality of sheets S passing between the pair of folding rollers 49A and 49B is calculated. In step S52, the printing machine control device 11 calls the folding gap A set value with respect to the total paper thickness α of the plurality of sheets S by using the map.

In step S53, the printing machine control device 11 determines whether or not the paper splicing work has been started in any of the paper feeding units R1 to R7. Here, if it is determined (No) that the paper splicing work has not started, the process waits in step S53. On the other hand, when it is determined (Yes) that the paper splicing work has started, in step S54, the printing machine control device 11 determines whether or not there is a change in the type of the take-up paper W after the paper splicing work is completed. Here, if it is determined (No) that there is no change in the type of the take-up paper W after the paper splicing work is completed, the routine is exited without doing anything.

On the other hand, if it is determined (Yes) that there is a change in the type of the take-up paper W after the paper splicing work is completed, in step S55, the printing machine control device 11 determines the total paper thickness of the take-up paper W after the paper splicing work is completed. Calculate β. For example, when the type of the take-up paper W used in the paper feed unit R1 of the paper feed units R1 to R7 (paper thickness according to the paper manufacturing company, paper mill, paper making machine, paper type, etc.) is changed. , The paper thickness of the sheet S in the take-up paper W of the changed paper feed unit R1 is changed, and the total paper thickness β of the plurality of sheets S passing between the pair of folding rollers 49A and 49B is calculated. Then, in step S56, the printing machine control device 11 calls the folding gap A set value with respect to the total paper thickness β of the plurality of sheets S by using the map.

In step S57, the printing machine control device 11 determines whether the paper splicing work has been completed in the paper feed units R1 to R7. Here, if it is determined (No) that the paper splicing work has not been completed, it is determined in step S58 whether the paper splicing work is being performed by the other paper feeding units R1 to R7. Here, if it is determined (Yes) that the paper splicing work is being performed by the other paper feed units R1 to R7, the process returns to step S51 and the process is repeated, and the paper splicing is performed by the other paper feed units R1 to R7. If it is determined that the work has not been performed, the process waits in step S57. On the other hand, in step S57, when the printing press control device 11 determines (Yes) that the paper splicing work has been completed in the paper feeding units R1 to R7, in step S59, the printing press control device 11 has a plurality of printing press control devices 11. The folding gap A set value for the total paper thickness α of the sheet S is changed to the folding gap A set value for the total paper thickness β, and the folding gap A between the pair of folding rollers 49A and 49B is adjusted by the gap adjusting device 26.

The roller clearance adjustment control method is not limited to the above. FIG. 11 is a flowchart showing a first modification of the roller clearance adjustment control, FIG. 12 is a flowchart showing a second modification of the roller clearance adjustment control, and FIG. 13 is a third modification of the roller clearance adjustment control. It is a flowchart showing. When the same processing as the above-mentioned processing is carried out, the same step reference numerals are given and the description thereof will be omitted.

In the first modification of the roller clearance adjustment control, as shown in FIG. 11, the processes from step S51 to step S58 are the same as the processes described with reference to FIG. In step S57, the printing machine control device 11 determines whether the paper splicing work has been completed in the paper feed units R1 to R7. When the printing machine control device 11 determines (Yes) that the paper splicing work has been completed in the paper feeding units R1 to R7, in step S61, the printing machine control device 11 folds the plurality of sheets S into the total paper thickness α. The difference between the gap A set value and the folding gap A set value with respect to the total paper thickness β is set as an adjustment value, and the folding gap A between the pair of folding rollers 49A and 49B is changed by this adjustment value by the gap adjusting device 26. ..

Further, in the second modification of the roller clearance adjustment control, as shown in FIG. 12, the processes from step S51 to step S58 are the same as the processes described with reference to FIG. In step S57, the printing machine control device 11 determines whether the paper splicing work has been completed in the paper feed units R1 to R7. When the printing machine control device 11 determines (Yes) that the paper splicing work has been completed in the paper feeding units R1 to R7, in step S62, the printing machine control device 11 folds the plurality of sheets S into the total paper thickness α. After changing the fold-in gap A set value for the total paper thickness β from the crevice A set value and correcting the fold-in gap A set value in consideration of the manufacturing information (friction resistance) of the cover, a pair of fold-in rollers are used by the gap adjusting device 26. Adjust the folding gap A between 49A and 49B.

Further, in the third modification of the roller clearance adjustment control, as shown in FIG. 13, the processes from step S51 to step S58 are the same as the processes described with reference to FIG. In step S57, the printing machine control device 11 determines whether the paper splicing work has been completed in the paper feed units R1 to R7. When the printing machine control device 11 determines (Yes) that the paper splicing work has been completed in the paper feeding units R1 to R7, in step S63, the printing machine control device 11 folds the plurality of sheets S into the total paper thickness α. The difference between the gap A set value and the folding gap A set value with respect to the total paper thickness β is set as an adjustment value, and after correcting this adjustment value in consideration of the cover manufacturing information (friction resistance difference), the gap adjustment device According to 26, the folding gap A between the pair of folding rollers 49A and 49B is changed by this adjustment value.

Here, the effect of the roller clearance adjusting system of the present embodiment will be described. FIG. 14 is a time chart showing the conventional roller gap adjusting work, and FIG. 15 is a time chart showing the roller gap adjusting work of the present embodiment.

In the conventional roller clearance adjustment work, as shown in FIG. 14, the outer diameter (solid line) of the take-up paper W decreases with the passage of time, and at time t1, the paper is spliced and replaced with a new take-up paper W. Therefore, the outer diameter of the take-up paper W is maximized. At this time, when the type of the take-up paper W is changed, the operator manually adjusts the folding gap A between the pair of folding rollers 49A and 49B by the gap adjusting device 26 while checking the printed matter. Then, the adjustment of the folding gap A (dashed-dotted line / two-dot chain line) is completed at the time t2 when the gap adjusting time ta elapses from the time t1 at which the paper splicing is performed. Here, the alternate long and short dash line is the folding gap A on the propeller side, and the two-dot chain line is the folding gap A on the bag side.

On the other hand, in the roller clearance adjusting work of the present embodiment, as shown in FIG. 15, the outer diameter (solid line) of the take-up paper W decreases with the passage of time, and the paper is spliced at time t11 to be new. Since it is replaced with the take-up paper W, the outer diameter of the take-up paper W is maximized. At this time, when the type of the take-up paper W is changed, the printing machine control device 11 automatically adjusts the folding gap A between the pair of folding rollers 49A and 49B by the gap adjusting device 26. Therefore, the adjustment of the folding gap A (dashed-dotted line / two-dot chain line) is completed at the time t12 when the gap adjusting time tb elapses from the time t11 when the paper splicing is performed. It can be seen that in the roller clearance adjustment system of the present embodiment, the clearance adjustment time tb is significantly shortened with respect to the conventional clearance adjustment time ta.

As described above, in the roller gap adjusting system of the present embodiment, the folding gap between the pair of folding rollers 49A and 49B and the pair of folding rollers 49A and 49B that sandwich and convey the plurality of stacked sheets S. The total paper calculated from the gap adjusting device 26 for adjusting A, the bar code reader (information importing device) 104 for capturing the paper thickness information of the sheet S, and the paper thickness information of the plurality of sheets S captured by the bar code reader 104. A printing machine control device 11 that controls the gap adjusting device 26 based on the thickness is provided.

Therefore, the printing machine control device 11 calculates the total paper thickness from the paper thickness information of the plurality of sheets S taken in by the barcode reader 104, and the gap adjusting device 26 calculates the total paper thickness based on the calculated total paper thickness of the plurality of sheets S. The folding gap A of the pair of folding rollers 49A and 49B is adjusted. Therefore, workability can be improved by properly adjusting the folding gap A between the pair of folding rollers 49A and 49B in a short time, and the generation of defective paper is suppressed to reduce the printing cost. be able to.

In the roller clearance adjusting system of the present embodiment, the bar code reader 104 takes in the manufacturing information of the winding paper W on which the sheet S is wound as the paper thickness information. Therefore, even if the roll-up paper W of the same paper type is used, the thickness and the like vary slightly, but in order to obtain the total paper thickness of the plurality of sheets S based on the manufacturing information of the roll-up paper W including the paper thickness information, a pair of folds is made. The folding gap A between the rollers 49A and 49B can be adjusted with high accuracy.

In the roller clearance adjusting system of the present embodiment, the bar code reader 104 takes in the manufacturing information written on the surface of the winding paper W when the winding paper W is carried into the paper storage 101. Therefore, the printing machine control device 11 may use the manufacturing information of the winding paper W captured here, and the workability can be improved.

In the roller clearance adjusting system of the present embodiment, the printing machine control device 11 resets the total paper thickness of the plurality of sheets S when the types of the plurality of stacked sheets S are changed. Therefore, even if the sheet S is changed during printing, the total paper thickness of the plurality of sheets S is immediately reset, so that the folding gap A between the pair of folding rollers 49A and 49B is always adjusted with high accuracy. Can be done.

In the roller clearance adjusting system of the present embodiment, the sheet S is unwound from a plurality of winding papers W, and the printing machine control device 11 performs paper splicing of the sheets S from the winding paper W. The paper thickness information of the sheet S from the spliced roll paper W is changed. Therefore, even if the sheet S is changed at the time of paper splicing, the paper thickness information of the sheet S is changed immediately, so that the folding gap A between the pair of folding rollers 49A and 49B can be adjusted with high accuracy at all times.

In the roller gap adjusting system of the present embodiment, a storage unit 14 for storing the paper thickness information of the sheet S taken in by the bar code reader 104 is provided, and the printing machine control device 11 stores the sheet S stored in the storage unit 14. The gap adjusting device 26 is controlled based on the paper thickness information of the above. Therefore, the paper thickness information of the sheet S taken in by the bar code reader 104 is stored in the storage unit 14, and the printing machine control device 11 is a gap adjusting device based on the paper thickness information of the sheet S stored in the storage unit 14. Since 26 is controlled, it is possible to correspond to a plurality of types of sheets S.

In the roller gap adjusting system of the present embodiment, the storage unit 14 stores a map of the optimum folding gap A between the pair of folding rollers 49A and 49B with respect to the total paper thickness of the plurality of sheets S. Therefore, the printing machine control device 11 sets an optimum folding gap A between the pair of folding rollers 49A and 49B using a map based on the paper thickness information of the sheet S, and the gap adjusting device 11 uses the set folding gap A. Since 26 is controlled, the folding gap A between the pair of folding rollers 49A and 49B can be quickly adjusted.

In the roller gap adjusting system of the present embodiment, the gap adjusted by the gap adjusting device 26 when a plurality of sheets S are properly folded by the pair of folding rollers 49A and 49B is defined as the optimum folding gap A. Therefore, since the storage unit 14 stores the gap adjusted by the gap adjusting device 26 when the plurality of sheets S are properly folded by the pair of folding rollers 49A and 49B as the optimum folding gap A. It is possible to adjust between the pair of folding rollers 49A and 49B with high accuracy.

In the roller clearance adjusting system of the present embodiment, the bar code reader 104 can take in the manufacturing information of the sheet S, and the printing machine control device 11 has the manufacturing information of the sheet S in contact with the pair of folding rollers 49A and 49B. The optimum folding gap A is changed based on. Therefore, since the frictional resistance of the sheet S with the folding rollers 49A and 49B differs depending on the manufacturing information such as the paper manufacturing company and the paper type, the printing machine control device 11 manufactures the sheet S in contact with the folding rollers 49A and 49B. Since the optimum folding gap A is changed based on the information, it is possible to adjust to the optimum folding gap A of the pair of folding rollers 49A and 49B.

In the present embodiment, the bar code reader 104 as an information fetching device is configured to read the bar code written on the wamp of the winding paper W to capture the manufacturing information of the winding paper W. It is not limited. The winding paper W has manufacturing information written on the end face even after the wamp is removed, and this description may be captured by a camera or the like. Further, the manufacturing information of the take-up paper W may be directly input by the operator from the operation unit 112, or may be manually input to the information terminal or the like and taken into the paper storage control device 111.

In the above-described embodiment, the offset rotary printing press P for newspapers is applied as the printing press, but it may be applied to a commercial offset rotary printing press, an offset sheet-fed printing press, a digital printing press, and the like.

10 Printing system 11 Printing machine control device 12 Operation unit 13 Display unit 14 Storage unit 21, 22, 23, 24, 25 Adjustment device 26 Adjustment device, Gap adjustment device 31 Drag roller 32 Triangular plate 33 Folding blade 34 Saw blade 39 Needle device 43 Saw Blade support 46 Folding blade 49A, 49B Folding roller (roller)
50A, 50B Paper guide 51 Impeller 52 Paper discharge conveyor 61A, 61B Support arm 62A, 62B Support shaft 63A, 63B Connection part 64 Screw shaft 65 Drive part 100 Paper storage system 101 Paper storage 104 Bar code reader (information acquisition device)
111 Paper storage controller 112 Operation unit 113 Display unit 114 Storage unit P Newspaper offset rotary printing press (printing machine)
R Paper feed device R1 to R7 Paper feed unit I Infeed device I1 to I7 Infeed unit U Printing device U1 to U6, U11 to U62 Printing unit D Webpass device D1, D2 Webpass unit F folding machine F1, F2 folding unit S sheet W roll paper

Claims (9)

A pair of rollers that sandwich and convey multiple stacked sheets,
A gap adjusting device that adjusts the gap between the pair of rollers, and
An information capture device that captures sheet thickness information and
An outer diameter measuring device that calculates the paper thickness of the sheet unwound from the roll paper based on the outer diameter of the roll paper, and an outer diameter measuring device.
The paper thickness of the sheet obtained based on the paper thickness information captured by the information acquisition device is corrected by using the paper thickness of the sheet calculated by the outer diameter measuring device, and the corrected paper thickness of the sheet is corrected. A control device that controls the gap adjusting device based on the total paper thickness of a plurality of sheets calculated by adding
A roller clearance adjustment system characterized by being equipped with. The roller gap adjusting system according to claim 1, wherein the information acquisition device captures manufacturing information of the wound paper from which the sheet is wound as the paper thickness information. The roller gap adjusting system according to claim 2, wherein the information acquisition device captures manufacturing information of the winding paper when the winding paper is carried into the paper storage. The control device according to any one of claims 1 to 3, wherein the control device resets the total paper thickness of the plurality of sheets when the types of the plurality of stacked sheets are changed. Roller clearance adjustment system. The sheet is unwound from a plurality of rolls, and the control device changes the sheet thickness information from the rolls that have been spliced after the sheets have been spliced from the rolls. The roller clearance adjusting system according to claim 4. A storage unit for storing the paper thickness information of the sheet captured by the information acquisition device is provided, and the control device controls the gap adjusting device based on the sheet thickness information stored in the storage unit. The roller clearance adjusting system according to any one of claims 1 to 5, characterized in that. The roller gap adjusting system according to claim 6, wherein the storage unit stores a map of the optimum gap between the pair of rollers with respect to the total paper thickness of a plurality of sheets. The pair of rollers sandwiches and folds a plurality of stacked sheets, and the optimum gap is adjusted by the gap adjusting device when the plurality of sheets are appropriately folded by the pair of rollers. The roller gap adjusting system according to claim 7, wherein the roller has a gap. 7. The information acquisition device can acquire sheet manufacturing information, and the control device changes the optimum gap based on the sheet manufacturing information in contact with the pair of rollers. Alternatively, the roller clearance adjusting system according to claim 8.

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