JP2022035322A - Component replacement monitoring device of folding machine and offset rotary press - Google Patents

Abstract

To provide a component replacement monitoring device of a folding machine capable of outputting an alarm by accurately estimating replacement timing of a saw blade receiver, and an offset rotary press.SOLUTION: A component replacement monitoring device of a folding machine comprises: a saw drum rotatably provided and having a saw blade for cutting a web into a prescribed length; a folding drum rotatably provided and having a saw blade receiver contacted with the saw blade; and a pair of folding rollers laterally folding a sheet formed by laterally cutting the web by the saw drum and the folding drum. The component replacement monitoring device has: a vibration sensor detecting the vibration of the folding rollers; an alarm control part outputting a component replacement alarm due to deterioration of the saw blade receiver on the basis of the vibration of the folding rollers detected by the vibration sensor; and a display device displaying the component replacement alarm output by the alarm control part.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a parts replacement monitoring device for a folding machine that cuts and folds a web to a predetermined size, and an offset rotary printing machine provided with the folding machine.

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 folding machine has a triangular plate, a folding cylinder and a saw cylinder, a pair of folding rollers, and an impeller. The web vertically folded by the triangular plate is wound around the folding cylinder with the front end held by the needle of the folding cylinder, and is horizontally cut by the saw blade of the saw blade. The horizontally cut sheet is peeled off from the folding cylinder by the folding blade of the folding cylinder, and a crease is made in the middle portion in the transport direction. The sheet with a crease in the middle portion is sandwiched by a pair of folding rollers to be folded sideways to produce a newspaper that is a tatami mat, and is sequentially ejected by an impeller.

The saw body has a saw blade and the folding body has a saw blade holder. When the saw blade and the folding cylinder rotate synchronously, when the web is supplied between the saw blade and the folding cylinder, the saw blade is pressed against the saw blade holder to cut the web horizontally. As a folding machine of such an offset rotary printing press for newspapers, for example, there is one described in Patent Document 1 below.

Japanese Patent No. 5703488

The saw blade holder provided on the folding cylinder is made of rubber. Since the tip of the saw blade is pressed against the saw blade holder, it deteriorates with long-term use. When the saw blade holder deteriorates, cracks also occur in the portion where the saw blade is pressed, and the saw blade may not be able to laterally cut the web with high accuracy. If the web cannot be horizontally cut with high accuracy, the sheet after the horizontal cutting cannot be conveyed with high accuracy, and the horizontal folding accuracy by the pair of folding rollers is lowered. Therefore, it is necessary to replace the saw blade holder regularly. Conventionally, the degree of deterioration of the saw blade holder is estimated from the usage period, and when the usage period reaches a preset replacement period, the saw blade holder is replaced. However, the number of newspapers produced as tatami mats varies depending on the type. That is, when cutting a web having a large number of sheets, the degree of deterioration of the saw blade receiver tends to be large, and when cutting and manufacturing a web having a small number of sheets, the degree of deterioration of the saw blade receiver tends to be small. Therefore, if the degree of deterioration of the saw blade holder is estimated from the period of use and replaced, the saw blade holder that does not need to be replaced may be replaced, or the saw blade holder that already needs to be replaced may not be replaced. Occur. Then, the cost of parts increases due to the early replacement of the saw blade holder, and the cutting accuracy deteriorates due to the delay in the replacement of the saw blade holder.

The present disclosure solves the above-mentioned problems, and provides a parts replacement monitoring device for a folding machine and an offset rotary printing press capable of accurately estimating the replacement time of a saw blade holder and outputting an alarm. The purpose.

The parts replacement monitoring device of the folding machine of the present disclosure for achieving the above object is provided with a saw blade rotatably provided and having a saw blade for cutting the web to a predetermined length, and rotatably provided as described above. Parts replacement of a folding machine comprising a folding cylinder having a saw blade holder with which the saw blades come into contact, and a pair of folding rollers that laterally fold the sheet formed by laterally cutting the web by the saw blade and the folding cylinder. In the monitoring device, a vibration sensor that detects the vibration of the folding roller, an alarm control unit that outputs a component replacement alarm due to deterioration of the saw blade receiver based on the vibration of the folding roller detected by the vibration sensor, and the alarm. A display device for displaying a component replacement alarm output by the control unit is provided.

Further, the offset rotary printing press of the present disclosure vertically folds a paper feed device for supplying a web, a printing device for printing on the web supplied from the paper feed device, and the web printed by the printing device. It is provided with a folding machine that is horizontally cut and then horizontally folded to form a folding machine, and a parts replacement monitoring device for the folding machine.

According to the parts replacement monitoring device and the offset rotary printing press of the folding machine of the present disclosure, it is possible to accurately estimate the replacement time of the saw blade receiver and output an alarm.

FIG. 1 is a schematic configuration diagram showing a control block in the offset rotary printing press for newspapers of the present embodiment. FIG. 2 is a schematic configuration diagram showing a control block in the parts replacement monitoring device of the folding machine of the present embodiment. FIG. 3 is a flowchart showing a method of determining a defect in a tatami mat. FIG. 4 is a graph showing changes in the vibration level of the folding roller with the passage of time. FIG. 5 is a flowchart showing an output method of a component replacement alarm. FIG. 6 is a flowchart showing a first modification of the output method of the component replacement alarm. FIG. 7 is a flowchart showing a second modification of the output method of the component replacement alarm. FIG. 8 is a flowchart showing a third modification of the component replacement alarm output method. FIG. 9 is a flowchart showing a method of outputting a component replacement warning alarm. FIG. 10 is a graph showing changes in the torque of the folding cylinder with the passage of time. FIG. 11 is a flowchart showing a first modification of the component replacement warning alarm output method. FIG. 12 is a flowchart showing a second modification of the component replacement warning alarm output method. FIG. 13 is a graph showing the change in the average value of vibration with the passage of time. FIG. 14 is a schematic configuration diagram showing an offset rotary printing press for newspapers. FIG. 15 is a schematic view showing a folding unit. FIG. 16 is a schematic view showing a folding cylinder, a saw cylinder, and a folding roller. FIG. 17 is a schematic view showing a roller clearance adjusting device.

Preferred embodiments of the present disclosure will be described in detail below with reference to the drawings. It should be noted that the present disclosure is not limited to this embodiment, and when there are a plurality of embodiments, the present embodiment also includes a combination of the respective embodiments. Further, the components in the embodiment include those that can be easily assumed by those skilled in the art, those that are substantially the same, that is, those in a so-called equal range.

[Offset rotary printing press for newspapers]
FIG. 14 is a schematic configuration diagram showing the offset rotary printing press for newspapers of the first embodiment. The offset rotary printing press for newspapers of the present embodiment is a 4 × 1 rotary printing press in which the size of the plate cylinder of the printing apparatus is set to 4 page width × 1 page circumference, but the size of the plate cylinder is 4 page width. It may be a 4 × 2 rotary printing machine set to × 2 page circumference.

As shown in FIG. 14, the printing machine of this embodiment is an offset rotary printing machine for newspapers 10. The newspaper offset rotary printing press 10 includes a paper feeding device R, an infeed device I, a printing device U, a web path device D, and a folding machine F.

The paper feed device R has a plurality of (seven units in this embodiment) paper feed units R1 to R7. The in-feed device I has a plurality of (seven in this embodiment) in-feed units I1 to I7. The printing apparatus U has a plurality of (six in this embodiment) printing units U1 to U6. The web pass device D has a plurality of (two in this embodiment) web pass units D1 and D2. The folding machine F has a plurality of folding units F1 and F2 (two in this embodiment).

In the paper feed device R, the paper feed units R1 to R7 have substantially the same configuration, and have a holding arm for holding three rolls of paper (printing medium) W wound in a roll shape. By rotating the holding arm, the take-up paper can be rotated to the paper feed position. In the in-feed device I, the in-feed units I1 to I7 have substantially the same configuration, and the web traveling on the printing device U by adjusting the tension of the web W sent to the printing units U1 to U6 of the printing device U. The tension of W is stably maintained at an appropriate value. The tension of the web W from the paper feed device R to the infeed device I is performed by a brake device (not shown) provided in the paper feed units R1 to R7.

In the printing apparatus U, the printing units U1 to U6 are multicolor 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 capable of performing double-sided two-color printing. The printing units U11 to U62 have almost the same configuration, and include an ink supply device, a plate cylinder, a blanket cylinder, and the like.

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. The web path units D1 and D2 have almost the same configuration, and have a slitter that cuts the web W along the vertical direction (the transport direction of the web W) at the center in the width direction, and a transport path of the vertically cut web W. It has a turn bar to be set, a compensator for adjusting the position of the pattern in the longitudinal direction of the top and bottom of the web W, and the like.

Each web W printed by the printing units U1 to U3 is vertically cut by the web path unit D1 by the slitter, the transport route is changed by the turn bar, and the pattern position is adjusted by the compensator, and then in a predetermined order. Overlaid. Further, each web W printed by the printing units U4 to U6 is vertically cut by the web path unit D2 by the slitter, the transport route is changed by the turn bar, and the pattern position is adjusted by the compensator before the predetermined position. They are layered in order. There is also a pattern in which each web W printed by the printing units U4 to U6 enters the web W printed by the printing units U1 to U3 via the web path unit D1.

In the folding machine F, the two folding units F1 and F2 are arranged on the operation side and the drive side. When a plurality of webs W1 are stacked and introduced from the web path unit D1, the folding unit F1 vertically folds the web W1, cuts it horizontally to a predetermined length, and folds it horizontally to form a newspaper. To eject as. Further, when a plurality of webs W2 are stacked and introduced from the web path unit D2, the folding unit F2 vertically folds the web W2, horizontally cuts the web W2 to a predetermined length, and horizontally folds the web W2 to form a tatami mat. , Discharge as a newspaper. In this embodiment, two folding units F1 and F2 are provided, but without providing the folding unit F2, the web W1 and the web W2 are overlapped and vertically folded by one of the folding units F1 to have a predetermined length. It may be cut horizontally, folded horizontally to form a tatami mat, and discharged as a newspaper.

[Folding unit]
15 is a schematic view showing a folding unit, FIG. 16 is a schematic view showing a folding cylinder, a saw cylinder and a folding roller, and FIG. 17 is a schematic view showing a roller clearance adjusting device.

As shown in FIG. 15, the folding unit F1 of the folding machine F includes a triangular plate 11, a folding cylinder 12, a saw cylinder 13, a pair of folding rollers 14, an impeller 15, and a paper ejection conveyor 16.

In the folding unit F1, the drag roller 21 is arranged at the uppermost portion in the vertical direction, and the triangular plate 11 is arranged below the drag roller 21. The drag roller 21 conveys a plurality of webs W stacked in a predetermined order by the web path unit D1 to the triangular plate 11. The triangular plate 11 vertically folds a plurality of webs W conveyed by the drag roller 21. The folding cylinder 12 and the saw cylinder 13 are arranged below the triangular plate 11. The folding cylinder 12 holds and conveys the vertically folded web W by the triangular plate 11, and the saw cylinder 13 horizontally cuts the vertically folded web W to form the sheet S. Further, a pair of lead-in rollers 22, a pair of nipping rollers 23, a guide roller 24, and a pair of nipping rollers 25 are arranged between the triangular plate 11 and the folding cylinder 12 and the saw cylinder 13.

As shown in FIG. 16, the folding cylinder 12 is provided with a needle device 31 on the outer peripheral portion thereof with a deviation of 180 degrees in the circumferential direction. Each needle device 31 has almost the same configuration. The needle device 31 has a needle shaft 32, a needle arm 33, and a needle 34. The needle shaft 32 is provided along the axial direction of the folding cylinder 12. The base end of the needle arm 33 is fixed to the needle shaft 32. Further, the needle 34 is fixed to the tip of the needle arm 33. The needle device 31 operates in conjunction with the rotation of the folding cylinder 12. Therefore, the needle device 31 moves the needle 34 from the storage position to the outward protrusion position via the needle arm 33 at a predetermined rotation position in the folding cylinder 12, and holds the tip portion of the web W in the transport direction. .. Further, the needle device 31 returns the needle 34 from the protruding position to the storage position via the needle arm 33 at a predetermined position on the folding cylinder 12, and releases the holding of the tip portion of the web W.

Further, the folding cylinder 12 is provided with a saw blade receiver 35 on the outer peripheral portion thereof with a deviation of 180 degrees in the circumferential direction. The saw blade receiver 35 is provided at substantially the same position as the needle device 31. The saw blade receiver 35 is generally made of an elastic body such as rubber. On the other hand, the saw blade 13 is provided on the outer peripheral portion with a saw blade 36 supported by the saw blade base 37 with a deviation of 180 degrees in the circumferential direction. The folding cylinder 12 and the saw blade 13 rotate synchronously at the same peripheral speed, so that the rotation phases are set so that the saw blade 36 and the saw blade receiver 35 face each other at a predetermined cycle. Therefore, when the folding cylinder 12 and the saw blade 13 rotate synchronously and the saw blade 36 and the saw blade receiver 35 face each other and match, the tip portion of the saw blade 36 is pressed against the saw blade receiver 35. At this time, when the web W is conveyed between the saw blade 36 and the saw blade receiver 35, the web W is laterally cut to form a sheet S having a predetermined length.

Further, the folding cylinder 12 is provided on the outer peripheral portion with a folding blade 38 supported by the folding shaft 39 with a deviation of 180 degrees in the circumferential direction. The folding blade 38 is provided so as to be out of phase with the needle device 31 by approximately 90 degrees. The folding blade 38 has a comb blade shape, and the tip portion thereof can protrude outward from the outer peripheral surface of the folding cylinder 12. The folding blade 38 can rotate about the folding shaft 39, and can rotate synchronously with the rotation of the folding cylinder 12 in the direction opposite to the rotation direction of the folding cylinder 12. Therefore, the folding blade 38 has a sheet S laterally cut by the saw blade 36 and the saw blade receiver 35 by projecting the tip portion outward from the outer peripheral surface of the folding cylinder 12 at a predetermined rotation position of the folding cylinder 12. Is peeled off from the outer peripheral surface of the folding cylinder 12.

As shown in FIGS. 15 and 16, a pair of folding rollers 14 (14A, 14B) are arranged below the folding cylinder 12. The pair of folding rollers 14A and 14B are provided so as to be rotatable in synchronization with the folding cylinder 12. The pair of folding rollers 14A and 14B are provided with a pair of paper guides 40A and 40B on both sides of the pair of folding rollers 14A and 14B below the folding cylinder 12. Therefore, the pair of folding rollers 14A and 14B fold sideways to make a crease by sandwiching the intermediate portion of the sheet S pushed downward by the folding blade 38 protruding from the folding cylinder 12, and the folding book (newspaper). Form N.

An impeller 15 is arranged below the pair of folding rollers 14A and 14B. A paper discharge conveyor 16 is arranged below the impeller 15. The impeller 15 has a plurality of blades in the circumferential direction. The impeller 15 rotates in synchronization with the rotation of the folding rollers 14A and 14B, so that the folding book N formed by the pair of folding rollers 14A and 14B is sequentially received by each blade and delivered onto the paper ejection conveyor 16. .. The paper discharge conveyor 16 conveys the folded paper N delivered from the impeller 15 in a partially overlapped state and discharges the paper.

Therefore, the web W conveyed to the folding unit F1 is conveyed to the triangular plate 11 by the drag roller 21 and vertically folded. The vertically folded web W is conveyed between the folding cylinder 12 and the saw cylinder 13 by the lead-in roller 22, the nipping roller 23, the guide roller 24, and the nipping roller 25.

The folding cylinder 12 pierces and holds the tip end portion of the web W by operating the needle device 31 and projecting the needle 34 outward. When rotating while holding the tip of the web W on the peripheral surface of the folding cylinder 12, the tip of the saw blade 36 is pressed against the saw blade receiver 35 at a predetermined rotation position in the folding cylinder 12, and the web W has a predetermined length. The sheet S is formed by being horizontally cut into pieces. Then, the needle device 31 is activated and the needle 34 is retracted to release the holding of the web W. At the same time, the folding blade 38 rotates and its tip portion protrudes outward from the outer peripheral surface of the folding cylinder 12, and the sheet S is peeled off from the peripheral surface of the folding cylinder 12.

Then, the sheet S peeled off from the outer peripheral surface of the folding cylinder 12 is folded at the intermediate portion in the longitudinal direction to make a crease. The pair of folding rollers 14A and 14B sandwich the sheet S and fold it sideways to form a folding book N. The folding cylinder 12 is provided with an air nozzle (not shown) that suppresses the edge bending behavior of the sheet S sandwiched between the folding rollers 14 by air blow. The folding book N formed by the folding rollers 14A and 14B is sequentially received by each of the blades of the impeller 15, and is delivered onto the paper ejection conveyor 16 to be ejected.

Further, as shown in FIG. 17, the folding unit F1 is provided with a roller folding gap adjusting device 41 for adjusting the folding gap A between the pair of folding rollers 14A and 14B. The pair of support arms 42A and 42B are arranged along the vertical direction, and the intermediate portion in the longitudinal direction is rotatably supported by the support shafts 43A and 43B. In the support arms 42A and 42B, folding rollers 14A and 14B are rotatably supported at the upper end portion, and connecting portions 44A and 44B are provided at the lower end portion. The screw shaft 45 is formed with two threaded portions 45a and 45b, and the threaded portions 45a and 45b are reverse threads. In the screw shaft 45, the screw portion 45a is screwed into the connecting portion 44A, and the screw portion 45b is screwed into the connecting portion 44B. The screw shaft 45 can rotate forward and reverse by the drive unit 46.

Therefore, when the screw shaft 45 is rotated forward by the drive unit 46, the support arms 42A and 42B rotate so that the connecting portions 44A and 44B approach each other. Then, the pair of folding rollers 14A and 14B are adjusted so as to be separated from each other and the folding gap A is expanded. On the other hand, when the screw shaft 45 is rotated in the reverse direction by the drive unit 46, the support arms 42A and 42B rotate so that the connecting portions 44A and 44B are separated from each other. Then, the pair of folding rollers 14A and 14B are adjusted so as to approach each other and reduce the folding gap A.

By the way, as shown in FIG. 16, the saw blade receiver 35 provided on the folding cylinder 12 is made of rubber. Since the tip of the saw blade 36 is repeatedly pressed against the saw blade receiver 35, the saw blade receiver 35 deteriorates due to long-term use. When the saw blade receiver 35 deteriorates, the accuracy of lateral cutting of the web W by the saw blade 36 decreases, and the accuracy of lateral folding by the folding roller 14 decreases.

Therefore, in the present embodiment, there is provided a component replacement monitoring device for a folding machine that monitors the degree of deterioration of the saw blade receiver 35 and informs the operator of the replacement time of the saw blade receiver 35.

[Control block of offset rotary printing press for newspapers]
FIG. 1 is a schematic configuration diagram showing a control block in the offset rotary printing press for newspapers of the present embodiment.

As shown in FIG. 1, the newspaper offset rotary printing press 10 includes a paper feeding device R, an infeed device I, a printing device U, a web path device D, and a folding machine F. The operation of the newspaper offset rotary printing press can be controlled by the printing press control unit 50. The printing machine control unit 50 includes a paper feed control unit 51, an in-feed control unit 52, a print control unit 53, a web path control unit 54, and a folding machine control unit 55. The paper feed control unit 51, the in-feed control unit 52, the print control unit 53, the web path control unit 54, and the folding machine control unit 55 are the paper feed device R, the in-feed device I, the printing device U, and the web path device D, respectively. The operation of the folding machine F can be controlled. Then, the parts replacement monitoring device 60 is connected to the printing machine control unit 50.

[Parts replacement monitoring device for folding machines]
FIG. 2 is a schematic configuration diagram showing a control block in the parts replacement monitoring device of the folding machine of the present embodiment.

As shown in FIG. 2, the parts replacement monitoring device 60 includes a vibration sensor 61, an alarm control unit 62, an alarm storage unit 63, a monitor (display device) 64, and a speaker (display device) 65.

The vibration sensor 61 detects the vibration of the pair of folding rollers 14 (14A, 14B). As shown in FIG. 17, the vibration sensor 61 is provided on the support arm 42A that supports the folding roller 14A. The vibration sensor 61 detects the vibration (displacement amount) of the folding roller 14A via the support arm 42A. In the present embodiment, the vibration sensor 61 is provided on the support arm 42A that supports the folding roller 14A, but the configuration is not limited to this. For example, the vibration sensor 61 may be provided on the support arm 42B that supports the folding roller 14B, or may be provided on both support arms 42A and 42B. Further, the vibration sensor 61 may be provided directly on the folding rollers 14A and 14B.

As shown in FIG. 2, the vibration sensor 61 outputs the detected vibration of the folding roller 14A to the folding machine control unit 55. The folding machine control unit 55 has a folding defect determination unit 71 and a folding defect determination storage unit 72. The folding defect determination unit 71 determines the folding defect of the sheet S based on the vibration of the folding roller 14 detected by the vibration sensor 61. The fold defect determination storage unit 72 stores the fold defect determination value used by the fold defect determination unit 71 to determine the fold defect. A plurality of types of folding defect determination values are set according to the type, number of sheets, size, and the like of the sheet S (web W). When the folding defect determining unit 71 determines the folding defect of the sheet S, the paper ejection conveyor 16 is operated and controlled, and the folding signature N formed by the sheet S determined to be the folding defect is removed from the paper ejection line.

Further, the folding defect determination unit 71 determines the determination result of the folding defect of the sheet S, which is determined based on the vibration of the folding roller 14 detected by the vibration sensor 61 and the vibration of the folding roller 14 detected by the vibration sensor 61, as an alarm control unit. Output to 62. The alarm control unit 62 outputs a parts replacement alarm due to deterioration of the saw blade receiver 35 provided on the folding cylinder 12 based on the vibration of the folding roller 14 and the determination result of the folding defect of the sheet S.

That is, the alarm control unit 62 determines whether the saw blade receiver 35 needs to be replaced while the saw blade receiver 35 deteriorates due to long-term use, and determines that the saw blade receiver 35 needs to be replaced. Then, a parts replacement alarm is output. When the alarm control unit 62 determines that the saw blade receiver 35 needs to be replaced, the alarm control unit 62 displays on the monitor 64 that the saw blade receiver 35 needs to be replaced as a parts replacement alarm, and the saw blade receiver 35 from the speaker 65. Emits that 35 needs to be replaced. As a component replacement alarm, it may be issued directly from the speaker 65 that the saw blade receiver 35 needs to be replaced.

In this case, the alarm control unit 62 outputs a parts replacement time warning alarm notifying that the replacement time of the saw blade receiver 35 is approaching and a parts replacement time alarm notifying that the replacement time of the saw blade receiver 35 has been reached. ..

The alarm storage unit 63 stores various determination values used for determining the output of the component replacement alarm. A plurality of types of determination values are set according to the type, number of sheets, size, and the like of the sheet S (web W).

[Folding defect judgment method]
FIG. 3 is a flowchart showing a method for determining a defect in a tatami mat, and FIG. 4 is a graph showing a change in the vibration level of the folding roller with the passage of time.

In the folding defect determination method, as shown in FIGS. 2 and 3, in step S11, the folding defect determining unit 71 of the folding machine control unit 55 uses the rotary press speed of the newspaper offset rotary printing press 10 (web W). It is determined whether or not the transport speed) is higher than the preset value. The set value is the speed at which the offset rotary printing press 10 for newspapers performs printing work (the transport speed of the web W), and is set according to the type of printing press, the type and number of newspapers to be produced, and the like. .. The set value is stored in the folding defect determination storage unit 72. That is, in step S11, it is determined whether or not printing is actually performed by the newspaper offset rotary printing press 10.

Here, if it is determined that the rotary press speed is not higher than the set value (No), that is, if it is determined that the printing operation has not been performed, the process proceeds to step S15. In step S15, the folding defect determination unit 71 determines whether or not the rotary press speed of the newspaper offset rotary printing press 10 is zero. That is, in step S15, it is determined whether or not the newspaper offset rotary printing press 10 is stopped. Here, if it is determined that the rotary press speed is 0 (Yes), that is, if it is determined that the newspaper offset rotary printing press 10 is stopped, the routine is exited without doing anything. On the other hand, if it is determined that the rotary press speed is not 0 (No), that is, if it is determined that the newspaper offset rotary printing press 10 is not stopped, the process returns to step S11.

In step S11, if it is determined that the rotary press speed is higher than the set value (Yes), that is, if it is determined that the printing operation is being performed, the process proceeds to step S12. In step S12, the folding defect determination unit 71 determines whether or not the vibration (vibration level) of the folding roller 14 detected by the vibration sensor 61 is larger than the preset folding defect determination value. In this case, the folding defect determination value is a threshold value set in advance by an experiment or the like based on the relationship between the vibration level of the folding roller 14 and the folding accuracy of the folding roller. Folding defect judgment values include printing speed (web W transport speed), folding machine F type (operation side, drive side), sheet S (web W) type, type of folding book (newspaper) to be manufactured, and the number of sheets. Is set by. The folding defect determination value is stored in the folding defect determination storage unit 72.

Here, if it is determined (No) that the vibration of the folding roller 14 is equal to or less than the folding defect determination value, the process returns to step S11. On the other hand, if it is determined (Yes) that the vibration of the folding roller 14 is larger than the folding defect determination value, the folding defect determining unit 71 determines in step S13 that a folding defect has occurred. Then, in step S14, the folding machine control unit 55 controls the operation of the paper ejection conveyor 16 to remove the folding paper N determined to be a folding defect from the paper ejection line.

After that, in step S15, the folding defect determination unit 71 determines whether or not the rotary press speed of the newspaper offset rotary printing press 10 is zero. Here, if it is determined that the rotary press speed is not 0 (No), that is, if it is determined that the newspaper offset rotary printing press 10 is not stopped, the process returns to step S11 and the process is repeated. On the other hand, if it is determined that the rotary press speed is 0 (Yes), that is, if it is determined that the newspaper offset rotary printing press 10 is stopped, it is determined that the printing work has been completed and the folding defect determination process is terminated. do.

As shown in FIG. 4, the folding roller 14 is displaced when a plurality of stacked sheets S are laterally folded, so that vibration is generated. Therefore, the vibration sensor 61 detects vibration at a predetermined interval (time). At this time, if the web W is not horizontally cut by the folding cylinder 12 and the saw cylinder 13 with high accuracy, the sheet S after the horizontal cutting cannot be conveyed with high accuracy, and the folding roller 14 detected by the vibration sensor 61 It is considered that the vibration becomes large. It can be presumed that the reason why the folding cylinder 12 and the saw cylinder 13 cannot accurately cut the web W is the deterioration of the saw blade receiver 35 to which the saw blade 36 is pressed. Therefore, when the vibration of the folding roller 14 in a predetermined period exceeds the folding defect determination value, it is determined that the folding roller is a defective product.

[Parts replacement time alarm output method]
FIG. 5 is a flowchart showing an output method of a component replacement alarm.

In the component replacement alarm output method, as shown in FIGS. 2 and 5, in step S31, whether the alarm control unit 62 has a larger number of folding defects by the folding roller 14 than a preset number of folding defects determination value. Is determined. In this case, the number of folding defects caused by the folding roller 14 is the number of folding defects generated by the folding roller 14 in a period retroactively by a predetermined time from the present. The value for determining the number of folding defects is a threshold value set in advance by an experiment or the like based on the relationship between the number of folding defects of the folding roller 14 and the replacement time according to the degree of deterioration of the saw blade receiver 35 of the folding cylinder 12. Is. The number of folding defects is determined by the printing speed (conveying speed of the web W), the type of the folding machine F (operation side, drive side), the type of the sheet S (web W), the type of the folding book (newspaper) to be manufactured, and the number of sheets. It is set by such as. The folding failure count determination value is stored in the alarm storage unit 63.

Here, if it is determined (No) that the number of folding defects by the folding roller 14 is equal to or less than the folding defect frequency determination value, it is presumed that the degree of deterioration of the saw blade receiver 35 is not large and the replacement time has not yet been reached. , Exit this routine without doing anything. On the other hand, if it is determined (Yes) that the number of folding defects by the folding roller 14 is larger than the folding defect frequency determination value, it is presumed that the degree of deterioration of the saw blade receiver 35 has already reached the replacement time, and step S32 is performed. The alarm control unit 62 outputs a component replacement time alarm.

In the above description, the alarm control unit 62 outputs a component replacement time alarm when the number of folding defects by the folding roller 14 is larger than the value for determining the number of folding defects, but the configuration is not limited to this. FIG. 6 is a flowchart showing a first modification of the component replacement alarm output method, FIG. 7 is a flowchart showing a second modification of the component replacement alarm output method, and FIG. 8 is a component replacement alarm output method. 3 It is a flowchart which shows the modification.

In the first modification of the component replacement alarm output method, as shown in FIGS. 2 and 6, in step S41, the alarm control unit 62 determines the number of folding defects in which the number of folding defects by the folding roller 14 is preset. Determine if it is greater than the value. Here, if it is determined (No) that the number of folding defects by the folding roller 14 is equal to or less than the folding defect frequency determination value, it is estimated that the degree of deterioration of the saw blade receiver 35 is not large and the replacement time has not yet been reached. , Exit this routine without doing anything.

On the other hand, if it is determined (Yes) that the number of folding defects by the folding roller 14 is larger than the folding defect number determination value, the process proceeds to step S42. In step S42, the alarm control unit 62 determines whether or not the maximum value of the vibration of the folding roller 14 detected by the vibration sensor 61 is larger than the preset vibration determination value. In this case, the maximum value of the vibration of the folding roller 14 is the maximum value among the plurality of detected values (vibration of the folding roller 14) of the vibration sensor 61 in a period retroactively by a predetermined time from the present. The vibration determination value is a threshold value set in advance by an experiment or the like based on the relationship between the vibration level of the folding roller 14 and the replacement time according to the degree of deterioration of the saw blade receiver 35 of the folding cylinder 12. .. The vibration judgment value depends on the printing speed (conveying speed of the web W), the type of the folding machine F (operation side, drive side), the type of the sheet S (web W), the type of the folding book (newspaper) to be manufactured, the number of sheets, and the like. Set. The vibration determination value is stored in the alarm storage unit 63.

Here, if it is determined (No) that the maximum value of the vibration of the folding roller 14 is equal to or less than the vibration determination value, the routine is exited without doing anything. On the other hand, when it is determined (Yes) that the maximum value of the vibration of the folding roller 14 is larger than the vibration determination value, it is presumed that the degree of deterioration of the saw blade receiver 35 has already reached the replacement time, and in step S43. , The alarm control unit 62 outputs a component replacement time alarm.

In the above description, the alarm control unit 62 determines by comparing the maximum value of the vibration of the folding roller 14 detected by the vibration sensor 61 with the vibration determination value, but the method is not limited to this method. .. For example, the alarm control unit 62 may determine by comparing the average value of a plurality of detection values (vibration of the folding roller 14) detected by the vibration sensor 61 in a predetermined period with the vibration average determination value.

In the second modification of the component replacement alarm output method, as shown in FIGS. 2 and 7, in step S51, the alarm control unit 62 determines the number of folding defects in which the number of folding defects by the folding roller 14 is preset. Determine if it is greater than the value. Here, if it is determined (No) that the number of folding defects by the folding roller 14 is equal to or less than the folding defect frequency determination value, it is estimated that the degree of deterioration of the saw blade receiver 35 is not large and the replacement time has not yet been reached. , Exit this routine without doing anything.

On the other hand, if it is determined (Yes) that the number of folding defects by the folding roller 14 is larger than the folding defect number determination value, the process proceeds to step S52. In step S52, the alarm control unit 62 determines whether or not the maximum value of the vibration of the folding roller 14 detected by the vibration sensor 61 is larger than the preset vibration determination value. Here, if it is determined (No) that the maximum value of the vibration of the folding roller 14 is equal to or less than the vibration determination value, the routine is exited without doing anything.

On the other hand, if it is determined (Yes) that the maximum value of the vibration of the folding roller 14 is larger than the vibration determination value, the process proceeds to step S53. In step S53, the alarm control unit 62 determines whether or not the drive torque of the folding cylinder 12 is smaller than the preset torque determination value. In this case, the drive torque of the folding cylinder 12 is the minimum torque for rotationally driving the folding cylinder 12 in a period retroactively by a predetermined time from the present. The torque determination value is a threshold value set in advance by an experiment or the like based on the relationship between the drive torque of the folding cylinder 12 and the replacement time according to the degree of deterioration of the saw blade receiver 35 of the folding cylinder 12. As the degree of deterioration of the saw blade receiver 35 progresses, the drive torque of the folding cylinder 12 decreases. The torque judgment value depends on the printing speed (conveying speed of the web W), the type of the folding machine F (operation side, drive side), the type of the sheet S (web W), the type of the folding book (newspaper) to be manufactured, the number of sheets, and the like. Set. The torque determination value is stored in the alarm storage unit 63.

Here, if it is determined (No) that the drive torque of the folding cylinder 12 is equal to or greater than the torque determination value, the routine is exited without doing anything. On the other hand, if it is determined (Yes) that the drive torque of the folding cylinder 12 is smaller than the torque determination value, it is presumed that the degree of deterioration of the saw blade receiver 35 has already reached the replacement time, and an alarm is given in step S54. The control unit 62 outputs a component replacement time alarm.

In the above description, the alarm control unit 62 determines by comparing the drive torque of the folding cylinder 12 with the torque determination value when the normal printing operation is performed, but the determination is limited to this method. It's not a thing. For example, the alarm control unit 62 may determine by comparing the drive torque of the folding cylinder 12 with the torque determination value when the transport speed of the web W is lower than the preset printing speed. Here, the time when the transport speed of the web W is lower than the printing speed is, for example, the time when the paper is threaded before the printing operation is started.

Further, the folding machine F is provided with a roller folding gap adjusting device 41 for adjusting the folding gap A between the folding rollers 14 (folding rollers 14A and 14B), and the folding gap A is appropriate by the roller folding gap adjusting device 41. Set to a value. Therefore, the alarm control unit 62 may output a component replacement time alarm when the folding gap A in the folding roller 14 exceeds a preset gap determination value.

In the third modification of the component replacement alarm output method, as shown in FIGS. 2 and 8, in step S61, the alarm control unit 62 has the number of printed copies after replacing the saw blade receiver 35 with a new one. It is determined whether or not the number of copies is larger than the preset number of copies determination value. Here, if it is determined (No) that the number of printed copies after replacing the saw blade receiver 35 is equal to or less than the number of copies determination value, it is estimated that the degree of deterioration of the saw blade receiver 35 is small and the replacement time has not yet been reached. , Exit this routine without doing anything. On the other hand, if it is determined (Yes) that the number of printed copies after replacing the saw blade receiver 35 is larger than the number of copies determination value, the process proceeds to step S62. Instead of the number of copies to be printed after replacing the saw blade receiver 35 with a new one, the printing time after replacing the saw blade receiver 35 with a new one may be determined. In step S62, the alarm control unit 62 determines whether or not the number of folding defects by the folding roller 14 is larger than the preset number of folding defects determination value. Here, if it is determined (No) that the number of folding defects by the folding roller 14 is equal to or less than the folding defect frequency determination value, it is estimated that the degree of deterioration of the saw blade receiver 35 is small and the replacement time has not yet been reached. Exit this routine without doing anything.

On the other hand, if it is determined (Yes) that the number of folding defects by the folding roller 14 is larger than the folding defect number determination value, the process proceeds to step S63. In step S63, the alarm control unit 62 determines whether or not the maximum value of the vibration of the folding roller 14 detected by the vibration sensor 61 is larger than the preset vibration determination value. Here, if it is determined (No) that the maximum value of the vibration of the folding roller 14 is equal to or less than the vibration determination value, the routine is exited without doing anything. On the other hand, if it is determined (Yes) that the maximum value of the vibration of the folding roller 14 is larger than the vibration determination value, the process proceeds to step S64. In step S64, the alarm control unit 62 determines whether or not the drive torque of the folding cylinder 12 is smaller than the preset torque determination value. If it is determined (No) that the drive torque of the folding cylinder 12 is equal to or greater than the torque determination value, the routine is exited without doing anything.

If it is determined (Yes) that the drive torque of the folding cylinder 12 is smaller than the torque determination value, the process proceeds to step S65. In step S65, the alarm control unit 62 determines whether or not the operation set value of the folding machine F is within the preset predetermined range. In this case, the operation setting values of the folding machine F are the operation setting values of the folding cylinder 12, the saw cylinder 13, and the folding roller 14, for example, the rotation speeds of the folding cylinder 12 and the saw cylinder 13, and the folding cylinder 12 and the saw cylinder 13. The phase with, the folding gap A of the folding roller 14, the air blow amount of the air nozzle, and the like. Here, if it is determined (No) that the operation set value of the folding machine F is not within the predetermined range, the routine is exited without doing anything. On the other hand, when it is determined (Yes) that the operation set value of the folding machine F is within the predetermined range, the degree of deterioration of the saw blade receiver 35 is reduced even though the operation setting value of the folding machine F is within the predetermined range. It is presumed that the size has increased and the replacement time has already been reached, and in step S66, the alarm control unit 62 outputs a component replacement time alarm.

In the third modification of the present embodiment, the alarm control unit 62 sets the vibration of the folding roller 14 detected by the vibration sensor 61 and the operation setting of the folding cylinder 12, the saw blade 13, and the folding roller 14 constituting the folding machine F. Based on the value, a component replacement alarm due to deterioration of the saw blade receiver 35 is output.

In the third modification of the present embodiment (FIG. 8), after the start of determination, in step S61, the alarm control unit 62 replaces the saw blade receiver 35 with a new one, and then the number of copies to be printed (printing time). ) Is greater than the preset number of copies determination value (time determination value). This determination process may be applied to the present embodiment (FIG. 5) and other modifications (FIGS. 6 and 7).

[How to output the parts replacement time warning alarm]
FIG. 9 is a flowchart showing a method of outputting a component replacement warning alarm, and FIG. 10 is a graph showing a change in the torque of the folding cylinder with the passage of time.

In the component replacement warning alarm output method, as shown in FIGS. 2 and 9, in step S71, whether the alarm control unit 62 has a larger number of folding defects by the folding roller 14 than the preset number of folding defects determination value. Judge whether or not. Here, if it is determined (No) that the number of folding defects by the folding roller 14 is equal to or less than the folding defect frequency determination value, it is estimated that the degree of deterioration of the saw blade receiver 35 is not large and the replacement time has not yet been reached. , The process proceeds to step S72. In step S72, the alarm control unit 62 determines whether the drive torque of the folding cylinder 12 is lower than the preset torque determination value. In this case, the torque determination value is the first torque determination value described later, which is a predetermined amount higher than the torque determination value (second torque determination value) described in the second modification (FIG. 7) of the present embodiment. Is set to. Here, if it is determined (No) that the drive torque of the folding cylinder 12 is equal to or greater than the torque determination value, the routine is exited without doing anything.

On the other hand, if it is determined (Yes) that the drive torque of the folding cylinder 12 is lower than the torque determination value, the degree of deterioration of the saw blade receiver 35 is increased, and it is estimated that the replacement time will soon be reached. The unit 62 outputs a component replacement time alarm alarm. Further, in step S71, if it is determined (Yes) that the number of folding defects by the folding roller 14 is larger than the value for determining the number of folding defects, it is estimated that the degree of deterioration of the saw blade receiver 35 has increased and the replacement time has already been reached. Then, in step S74, the alarm control unit 62 outputs a component replacement time alarm.

As shown in FIG. 10, when the printing operation by the newspaper offset rotary printing press 10 is started, the folding cylinder 12 and the saw cylinder 13 of the folding machine F are operated to horizontally cut the plurality of stacked webs W. To. At this time, the saw blade 36 of the saw blade 13 is repeatedly pressed against the saw blade receiver 35 of the folding cylinder 12, so that the saw blade receiver 35 deteriorates. As described above, when the saw blade receiver 35 deteriorates, the driving torque of the folding cylinder 12 decreases. Here, when the drive torque of the folding cylinder 12 drops to the first torque determination value A1, a component replacement time alarm alarm is output at time t1. After that, when the drive torque of the folding cylinder 12 drops to the second torque determination value A2, which is lower than the first torque determination value A1, a component replacement time alarm is output at time t2. When the saw blade receiver 35 is replaced with a new one at time t2, the drive torque of the folding cylinder 12 returns to the initial value.

In the flowchart of FIG. 9, when the number of folding defects by the folding roller 14 is larger than the number of folding defects determination value, a parts replacement time alarm is output, but the drive torque of the folding cylinder 12 is lower than the first torque determination value. If it falls below the torque determination value, a component replacement time alarm may be output.

In the above description, when the alarm control unit 62 determines that the drive torque of the folding cylinder 12 is lower than the torque determination value, the alarm control unit 62 outputs a component replacement time alarm alarm, but the method is not limited to this method. .. 11 is a flowchart showing a first modification of the component replacement warning alarm output method, FIG. 12 is a flowchart showing a second modification of the component replacement warning alarm output method, and FIG. 13 is a vibration with respect to the passage of time. It is a graph which shows the change of the average value.

In the first modification of the component replacement warning alarm output method, as shown in FIGS. 2 and 11, in step S81, the alarm control unit 62 has a number of folding defects in which the number of folding defects by the folding roller 14 is preset. Judge whether it is more than the judgment value. Here, if it is determined (No) that the number of folding defects by the folding roller 14 is equal to or less than the folding defect frequency determination value, it is estimated that the degree of deterioration of the saw blade receiver 35 is not large and the replacement time has not yet been reached. , The process proceeds to step S82. In step S82, the alarm control unit 62 determines whether or not the folding gap A of the folding roller 14 exceeds the preset gap determination value. In this case, the alarm control unit 62 may determine whether the folding gap A of the folding roller 14 is higher than the preset upper limit value or lower than the lower limit value. Here, if it is determined (No) that the folding gap A of the folding roller 14 is equal to or less than the gap determination value, the routine is exited without doing anything.

On the other hand, if it is determined (Yes) that the folding gap A of the folding roller 14 exceeds the gap determination value, the degree of deterioration of the saw blade receiver 35 increases, and it is estimated that the replacement time will soon be reached, and in step S83. , The alarm control unit 62 outputs a component replacement time alarm alarm. Further, in step S81, if it is determined (Yes) that the number of folding defects by the folding roller 14 is larger than the folding defect frequency determination value, it is estimated that the degree of deterioration of the saw blade receiver 35 has increased and the replacement time has already been reached. Then, in step S84, the alarm control unit 62 outputs a component replacement time alarm.

In the flowchart of FIG. 11, when the number of folding defects by the folding roller 14 is larger than the folding defect count determination value, a component replacement time alarm is output, but when the folding gap A of the folding roller 14 exceeds the first gap determination value. , A component replacement time alarm alarm may be output, and a component replacement timing alarm may be output when the folding gap A of the folding roller 14 exceeds the second gap determination value higher than the first gap determination value.

In the second modification of the component replacement warning alarm output method, as shown in FIGS. 2 and 12, in step S91, the alarm control unit 62 has a number of folding defects in which the number of folding defects by the folding roller 14 is preset. Judge whether it is more than the judgment value. Here, if it is determined (No) that the number of folding defects by the folding roller 14 is equal to or less than the folding defect frequency determination value, it is estimated that the degree of deterioration of the saw blade receiver 35 is not large and the replacement time has not yet been reached. , The process proceeds to step S92. In step S92, the alarm control unit 62 determines whether the average value of the vibration of the folding roller 14 is larger than the preset average determination value. In this case, the average value of the vibration of the folding roller 14 is the average value of a plurality of detected values (vibration of the folding roller 14) of the vibration sensor 61 in a period retroactively by a predetermined time from the present, that is, the vibration of the folding roller 14. It is a moving average value. Further, the average determination value is the first average determination value described later, and is a threshold set in advance by an experiment or the like based on the relationship between the average value of the vibration level of the folding roller 14 and the folding accuracy of the folding roller. The value. Here, if it is determined (No) that the average value of the vibration of the folding roller 14 is equal to or less than the average determination value, the routine is exited without doing anything.

On the other hand, if it is determined (Yes) that the average value of the vibration of the folding roller 14 is larger than the average determination value, the degree of deterioration of the saw blade receiver 35 is increased, and it is estimated that the replacement time will be reached soon. The alarm control unit 62 outputs a component replacement time alarm alarm. Further, in step S91, if it is determined (Yes) that the number of folding defects by the folding roller 14 is larger than the folding defect frequency determination value, it is estimated that the degree of deterioration of the saw blade receiver 35 has increased and the replacement time has already been reached. Then, in step S94, the alarm control unit 62 outputs a component replacement time alarm.

As shown in FIG. 13, when the printing operation by the newspaper offset rotary printing press 10 is started, the folding cylinder 12 and the saw cylinder 13 of the folding machine F are operated to horizontally cut the plurality of stacked webs W. To. At this time, the saw blade 36 of the saw blade 13 is repeatedly pressed against the saw blade receiver 35 of the folding cylinder 12, so that the saw blade receiver 35 deteriorates. As described above, when the saw blade receiver 35 deteriorates, the average value of vibration of the folding roller 14 increases. Here, when the average value of the vibration of the folding roller 14 rises to the first average determination value B1, a component replacement time alarm alarm is output at time t11. After that, when the average value of the vibration of the folding roller 14 rises to the second average determination value B2, which is higher than the first average determination value B1, a component replacement time alarm is output at time t12. When the saw blade receiver 35 is replaced with a new one at time t12, the average value of the vibration of the folding roller 14 returns to the initial value.

In the flowchart of FIG. 12, when the number of folding defects by the folding roller 14 is larger than the folding defect count determination value, a parts replacement time alarm is output, but the average value of the vibration of the folding roller 14 is higher than the first average determination value. If the second average determination value is exceeded, a component replacement time alarm may be output.

Further, the method of outputting the component replacement warning alarm is not limited to the above-mentioned method. For example, when the number of folding defects by the folding roller 14 is less than the number of folding defects determination value and more than the preset number of folding defects warning determination value, the component replacement time alarm alarm may be output. .. In this case, the failure count warning determination value is set to a number smaller than the folding failure count determination value. In addition, as a value for determining the output of the component replacement time alarm alarm, the maximum value of vibration of the folding roller 14 or the like may be applied.

[Action and effect of this embodiment]
The parts replacement monitoring device for the folding machine according to the first aspect includes a saw blade 13 having a saw blade 36 rotatably provided to cut the web W to a predetermined length, and a rotatably provided saw blade 36. A folding cylinder 12 having a saw blade holder 35 with which the saw blade holder 35 comes into contact with, and a pair of folding rollers 14 (14A, 14B) for laterally folding the sheet S formed by laterally cutting the web W by the saw blade 13 and the folding cylinder 12. In the parts replacement monitoring device 60 of the folding machine F provided with the above, a vibration sensor 61 that detects the vibration of the folding roller 14 and a parts replacement alarm due to deterioration of the saw blade receiver 35 based on the vibration of the folding roller 14 detected by the vibration sensor 61. The alarm control unit 62 for outputting the above, and the monitor 64 and the speaker 65 as display devices for displaying the component replacement alarm output by the alarm control unit 62 are provided.

The parts replacement monitoring device for the folding machine according to the first aspect outputs a parts replacement alarm due to deterioration of the saw blade receiver 35 based on the vibration of the folding roller 14. For example, when the saw blade receiver 35 deteriorates due to long-term use, the vibration when the folding roller 14 sandwiches the web W and folds laterally increases. Therefore, by estimating the replacement time of the saw blade receiver 35 based on the vibration of the folding roller 14, it is possible to accurately estimate the replacement time of the saw blade receiver 35 and output an alarm.

For example, in a newspaper produced as a tatami mat N, the number of overlapping web pages differs depending on the type. Therefore, when the saw blade 36 is pressed against the saw blade receiver 35 to cut the web W, the stress received by the saw blade receiver 35 is different, and the degree of deterioration of the saw blade receiver 35 varies depending on the number of web W to be cut. do. Therefore, by estimating the replacement time of the saw blade receiver 35 based on the vibration level of the folding roller 14 and outputting the component replacement alarm, it is possible to notify the replacement time of the saw blade receiver 35 with high accuracy. That is, regardless of the number of times the web W is cut by the saw blade 36 and the saw blade receiver 35, it is possible to estimate the degree of deterioration of the saw blade receiver 35 according to the number of cut webs W. Therefore, the situation where the saw blade receiver 35 that does not need to be replaced is replaced or the saw blade receiver 35 that already needs to be replaced is not replaced is reduced.

The parts replacement monitoring device for the folding machine according to the second aspect has a folding defect determining unit 71 for determining a folding defect of the sheet S based on the vibration of the folding roller 14 detected by the vibration sensor 61, and an alarm control unit 62. Outputs a parts replacement alarm when the number of folding defects of the sheet S determined by the folding defect determining unit 71 in a preset predetermined period exceeds the preset number of folding defects determination value. As a result, the component replacement alarm is output based on the number of folding defects in a predetermined period according to the increase in the vibration level of the folding roller 14, so that the output determination of the component replacement alarm can be performed with high accuracy.

In the parts replacement monitoring device for the folding machine according to the third aspect, the alarm control unit 62 has a preset vibration determination value in which the maximum value of the vibration of the folding roller 14 detected by the vibration sensor 61 in a preset predetermined period is set in advance. If it exceeds, a parts replacement alarm is output. As a result, since the component replacement alarm is output based on the maximum value of the vibration of the folding roller 14, the output determination of the component replacement alarm can be performed with high accuracy.

In the parts replacement monitoring device for the folding machine according to the fourth aspect, the alarm control unit 62 determines the vibration average value in which the average value of the vibration of the folding roller 14 detected by the vibration sensor 61 in the preset predetermined period is set in advance. If the value is exceeded, a parts replacement alarm is output. As a result, since the component replacement alarm is output based on the average value of the vibration of the folding roller 14, the output determination of the component replacement alarm can be performed with high accuracy.

In the parts replacement monitoring device for the folding machine according to the fifth aspect, the alarm control unit 62 issues a parts replacement alarm when the drive torque of the folding cylinder 12 falls below the preset torque determination value in a preset predetermined period. Output. As a result, the component replacement alarm is output based on the drive torque of the folding cylinder 12 provided with the saw blade receiver 35, so that the output determination of the component replacement alarm can be performed with high accuracy.

In the parts replacement monitoring device for the folding machine according to the sixth aspect, the alarm control unit 62 determines that the drive torque of the folding cylinder 12 is torque when the transport speed of the web W is lower than the preset printing speed. If it falls below the value, a parts replacement alarm is output. As a result, when the transport speed of the web W is low and low, the fluctuation of the drive torque of the folding cylinder 12 appears remarkably. Therefore, the output of the parts replacement alarm is determined based on the driving torque of the folding cylinder 12 at this time. Therefore, the determination accuracy can be improved.

In the parts replacement monitoring device for the folding machine according to the seventh aspect, the alarm control unit 62 outputs a parts replacement alarm when the folding gap A of the pair of folding rollers 14A and 14B exceeds a preset gap determination value. .. As a result, the component replacement alarm is output based on the folding gap A of the folding rollers 14A and 14B, so that the output determination of the component replacement alarm can be performed with high accuracy.

In the parts replacement monitoring device for the folding machine according to the eighth aspect, the alarm control unit 62 replaces parts when the operation set values of the folding cylinder 12, the saw cylinder 13, and the folding roller 14 are not within the preset operation reference range. Do not output an alarm. As a result, when the operation set values of the folding cylinder 12, the saw cylinder 13, and the folding roller 14 are not within the operating reference range, the vibration of the folding roller 14 may have increased due to factors other than the deterioration of the saw blade receiver 35, and the parts. Do not output a replacement alarm. Therefore, the output determination of the component replacement alarm can be performed with high accuracy.

In the parts replacement monitoring device for the folding machine according to the ninth aspect, in the alarm control unit 62, the number of copies (printing time) to be printed after the saw blade receiver 35 is replaced is equal to or less than the preset number of copies determination value (time determination value). If, the parts replacement alarm is not output. As a result, when the number of copies (printing time) after replacing the saw blade receiver 35 is equal to or less than the number of copies determination value (time determination value), the vibration of the folding roller 14 increases due to factors other than deterioration of the saw blade receiver 35. There is a possibility that the parts replacement alarm will not be output. Therefore, the output determination of the component replacement alarm can be performed with high accuracy.

The determination value for outputting the parts replacement alarm due to the deterioration of the saw blade receiver 35 in the parts replacement monitoring device of the folding machine according to the tenth aspect is the transport speed of the web W, the type of the folding machine F, and the type of the web W. , Multiple types are set according to the type and number of saw blades to be manufactured. As a result, the output of the component replacement alarm can be determined with high accuracy.

In the parts replacement monitoring device for the folding machine according to the eleventh aspect, the alarm control unit 62 reaches the parts replacement time warning alarm notifying that the replacement time of the saw blade receiver 35 is approaching and the replacement time of the saw blade receiver 35. It outputs a parts replacement time alarm to inform you that it has been done. As a result, the replacement of the saw blade receiver 35 can be prepared by the component replacement time warning alarm, and the replacement work of the saw blade receiver 35 can be smoothly performed by the component replacement timing alarm. In particular, when operating a printing machine by one operator, it is necessary to stop the machine and perform replacement work when a parts replacement time alarm is issued, but it is possible to prepare in advance and replace it in advance. Become.

In the parts replacement monitoring device for the folding machine according to the twelfth aspect, the alarm control unit 62 has a preset first vibration in which the average value of the vibrations of the folding roller 14 detected by the vibration sensor 61 in a preset predetermined period is set in advance. When the average judgment value is exceeded, a parts replacement time warning alarm is output, and when the average value of vibrations of the folding roller 14 exceeds the second vibration average judgment value higher than the first vibration average judgment value, a parts replacement time alarm is output. .. As a result, the parts replacement time warning alarm and the parts replacement time alarm can be output at an appropriate time.

In the parts replacement monitoring device for the folding machine according to the thirteenth aspect, the alarm control unit 62 replaces parts when the drive torque of the folding cylinder 12 in a preset predetermined period falls below the preset first torque determination value. A timing warning alarm is output, and when the drive torque of the folding cylinder 12 is lower than the second torque determination value lower than the first torque determination value, a component replacement timing alarm is output. As a result, the parts replacement time warning alarm and the parts replacement time alarm can be output at an appropriate time.

In the parts replacement monitoring device for the folding machine according to the fourteenth aspect, the alarm control unit 62 issues a parts replacement time warning alarm when the folding gap A of the pair of folding rollers 14 exceeds the preset first gap determination value. When the folding gap A of the pair of folding rollers 14 exceeds the second gap determination value higher than the first gap determination value, a component replacement time alarm is output. As a result, the parts replacement time warning alarm and the parts replacement time alarm can be output at an appropriate time.

The offset rotary printing press according to the fifteenth aspect includes a paper feed device R for supplying a web W, a printing device U for printing on the web W supplied from the paper feed device R, and a web printed by the printing device U. It is provided with a folding machine F that vertically folds W and horizontally cuts it, and then horizontally folds it to form a folding machine, and a parts replacement monitoring device 60. As a result, the folding machine F outputs a parts replacement alarm due to deterioration of the saw blade receiver 35 based on the vibration of the folding roller 14. For example, when the saw blade receiver 35 deteriorates due to long-term use, the vibration when the folding roller 14 sandwiches the web W and folds laterally increases. Therefore, by estimating the replacement time of the saw blade receiver 35 based on the vibration of the folding roller 14, it is possible to accurately estimate the replacement time of the saw blade receiver 35 and output an alarm.

In the above-described embodiment, the number of copies to be printed (printing time) after the saw blade receiver 35 is replaced, the number of folding defects of the sheet S, the maximum and average values of the vibration of the folding roller 14, the driving torque of the folding cylinder 12, and so on. The output judgment of the parts replacement alarm was made by comparing the item of the folding gap A of the folding roller 14 with the judgment value, but even if the output judgment of the parts replacement alarm is made by comparing any of the items with the judgment value. good.

Further, in the above-described embodiment, the offset rotary printing press has been described by applying it to the newspaper offset rotary printing press 10, but the present invention is not limited to this printing press. For example, it may be applied to a commercial offset rotary printing press.

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 10 Offset rotary printing press for newspapers (offset rotary printing press)
11 Triangular plate 12 Folding cylinder 13 Saw blade 14, 14A, 14B Folding roller 15 Impeller 16 Paper ejection conveyor 21 Drag roller 31 Needle device 32 Needle shaft 33 Needle arm 34 Needle 35 Saw blade receiver 36 Saw blade 37 Saw blade stand 38 Folding blade 39 Folding shaft 40A, 40B Paper guide 41 Folding clearance adjustment device 51 Feed feed control unit 52 Infeed control unit 53 Print control unit 54 Web path control unit 55 Folding machine control unit 60 Parts replacement monitoring device 61 Vibration sensor 62 Alarm control unit 63 Alarm Storage unit 64 Monitor (display device)
65 Speaker (display device)
71 Fold defect judgment unit 72 Fold defect judgment storage unit W Web S sheet N Folding book

Claims (15)

With a saw blade that is rotatably provided and has a saw blade that cuts the web to a predetermined length,
A folding cylinder that is rotatably provided and has a saw blade holder with which the saw blade contacts.
A pair of folding rollers for laterally folding a sheet formed by laterally cutting the web by the saw cylinder and the folding cylinder, and a pair of folding rollers.
In the parts replacement monitoring device of the folding machine equipped with
A vibration sensor that detects the vibration of the folding roller and
An alarm control unit that outputs a parts replacement alarm due to deterioration of the saw blade receiver based on the vibration of the folding roller detected by the vibration sensor.
A display device that displays the component replacement alarm output by the alarm control unit, and
Parts replacement monitoring device for folding machines. It has a folding defect determining unit that determines a folding defect of the sheet based on the vibration of the folding roller detected by the vibration sensor, and the alarm control unit is determined by the folding defect determining unit in a predetermined period set in advance. When the number of folding defects of the sheet exceeds the preset number of folding defects determination value, the parts replacement alarm is output.
The parts replacement monitoring device for the folding machine according to claim 1. The alarm control unit outputs the component replacement alarm when the maximum value of the vibration of the folding roller detected by the vibration sensor in a preset predetermined period exceeds the preset vibration determination value.
The parts replacement monitoring device for the folding machine according to claim 1 or 2. The alarm control unit outputs the component replacement alarm when the average value of the vibration of the folding roller detected by the vibration sensor in a preset predetermined period exceeds the preset vibration average determination value.
The parts replacement monitoring device for a folding machine according to any one of claims 1 to 3. The alarm control unit outputs the component replacement alarm when the drive torque of the folding cylinder falls below the preset torque determination value in a preset predetermined period.
The parts replacement monitoring device for a folding machine according to any one of claims 1 to 4. The alarm control unit outputs the component replacement alarm when the drive torque of the folding cylinder is lower than the torque determination value when the transport speed of the web is lower than the preset printing speed.
The parts replacement monitoring device for a folding machine according to claim 5. The alarm control unit outputs the component replacement alarm when the folding gap of the pair of folding rollers exceeds a preset gap determination value.
The parts replacement monitoring device for a folding machine according to any one of claims 1 to 6. The alarm control unit does not output the component replacement alarm unless the operation set values of the saw cylinder, the folding cylinder, and the folding roller are within the preset operating reference range.
The parts replacement monitoring device for a folding machine according to any one of claims 1 to 6. The alarm control unit does not output the component replacement alarm if the number of copies to be printed after replacing the saw blade holder is equal to or less than a preset number of copies determination value.
The parts replacement monitoring device for a folding machine according to any one of claims 1 to 8. Multiple types of judgment values for outputting the parts replacement alarm due to deterioration of the saw blade holder are set according to the web transport speed, the type of folding machine, the type of web, the type and number of folded tatami mats to be manufactured. Ru,
The parts replacement monitoring device for a folding machine according to any one of claims 1 to 9. The alarm control unit outputs a component replacement time warning alarm notifying that the replacement time of the saw blade receiver is approaching and a component replacement timing alarm notifying that the replacement time of the saw blade receiver has been reached.
The parts replacement monitoring device for a folding machine according to any one of claims 1 to 10. The alarm control unit outputs the component replacement time warning alarm when the average value of the vibration of the folding roller detected by the vibration sensor in a preset predetermined period exceeds the preset first vibration average determination value. Then, when the average value of the vibration of the folding roller exceeds the second vibration average determination value higher than the first vibration average determination value, the component replacement time alarm is output.
The parts replacement monitoring device for a folding machine according to claim 11. When the drive torque of the folding cylinder falls below the preset first torque determination value in a preset predetermined period, the alarm control unit outputs the component replacement time warning alarm, and the driving torque of the folding cylinder is reduced. When the value falls below the second torque determination value lower than the first torque determination value, the component replacement time alarm is output.
The parts replacement monitoring device for a folding machine according to claim 11. When the folding gap of the pair of folding rollers exceeds the preset first gap determination value, the alarm control unit outputs the component replacement time warning alarm, and the folding gap of the pair of folding rollers is the first. When the second gap judgment value higher than the gap judgment value is exceeded, the component replacement time alarm is output.
The parts replacement monitoring device for a folding machine according to claim 11. The paper feed device that supplies the web and
A printing device that prints on the web supplied from the paper feed device, and
A folding machine that folds the web printed by the printing device vertically, cuts it horizontally, and then folds it horizontally to form a tatami mat.
The parts replacement monitoring device for the folding machine according to any one of claims 1 to 14.
Offset rotary printing press.

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