JP2010105794A - Defectively folded paper detecting paper discharge device and defectively folded paper detecting paper discharge method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a defectively folded paper detecting paper discharge device capable of detecting the occurrence of defectively folded paper stably with high accuracy by a simple method and improving paper discharging efficiency. <P>SOLUTION: This defectively folded paper detecting paper discharge device 1 for discharging and removing the defectively folded paper folded by a folding machine 10 includes the folding machine 10 having a pair of folding rollers 11, 12 for folding a paper sheet, a conveyance means 40 for conveying the paper sheet folded by the folding machine 10, a contact-type sensor 50 for detecting the bounds of the folding rollers 11, 12, a control device 60 for performing the arithmetic processing of a bound detection signal of the sensor 50, a notify means 70 for notifying the occurrence of the defectively folded paper through an output signal from the control device 60, a loading part paper discharge means 80 disposed in the loading part 41 of the conveyance means 40 for discharging and removing the defectively folded paper before conveyance, and an intermediate removal paper discharge means 90 disposed in the intermediate removal part 49 of the conveyance means 40 for discharging and removing the defectively folded paper in the middle of conveyance. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a faulty paper detection and discharge device and a faulty paper detection and discharge method for unloading and discharging a faulty paper when a paper folding failure occurs in a folder of a rotary printing press.

  Newspaper rotary printing presses are equipped with a folding machine for folding printed newspaper. In this folding machine, printed newspaper is cut into a predetermined length by a folding cylinder and a saw cylinder, and is pushed between a pair of folding rollers (folding rollers) immediately below by a blade provided in the folding cylinder. It is folded and delivered to the delivery belt via a fan.

  Since the newsprint that has been folded by this folding machine is returned, it is preferable to remove the broken folding paper before or during the carrier transport of the folding machine.

  As a related technology, for example, when a folding failure occurs in a sheet folded between a pair of folding rollers, the vibration displacement of the folding roller is detected by a non-contact sensor, and the vibration displacement reaches a predetermined value or more. Then, the folding machine which alert | reports that by the alerting | reporting means is disclosed (refer patent document 1). According to this technology, it is possible to more accurately detect unnecessary folding of a sheet with a simple configuration and prevent a defective sheet from being mixed into a product.

JP 2006-44903 A

  As described above, in the technique of Patent Document 1, the vibration displacement of the folding roller (folding roller) is detected by a non-contact sensor. However, since the folding machine is in an environment where the generation of paper dust is inevitable, there is a problem that the detection accuracy is inferior when vibration displacement is detected using a non-contact type sensor.

  Further, in this technology, it is necessary to secure a space for mounting the non-contact sensor in the vicinity of the high-speed rotating part inside the folder. In particular, when such a structure is applied to an existing folding machine, it is difficult to secure a space for a non-contact sensor and a wiring route.

  Accordingly, the present invention has been made in view of the above circumstances, and has a simple structure that can stably detect the occurrence of broken paper with high accuracy and can improve paper discharge efficiency. An object of the present invention is to provide a detection paper discharge device and a folded paper detection method.

  The configuration of the present invention made to achieve the above object is as follows.

  That is, the present invention is a faulty paper detection and discharge device that discharges and removes a faulty paper folded by a folding machine, and is provided in the folding machine and includes a pair of folding rollers for folding the paper and the folding paper. A conveying means for conveying the sheet folded by the machine, a contact type sensor for detecting a bound of the folding roller, a control device for calculating a bound detection signal of the sensor, and an output signal from the control device. An informing means for informing the occurrence of defective paper, a loading section discharging means for discharging and removing the defective folding paper before conveyance, and a rear section of the loading section described above for the conveying means. A rear unloading and discharging unit that discharges and removes the broken paper during or after conveyance, and detects the bounce of the folding roller by the sensor, and the control device detects the sensor. Depending on the item, a defective sheet detector sheet discharging device Ori, characterized in that for controlling the paper discharge operation of the loading unit paper discharge unit and the rear and unloading sheet discharging means.

  The said structure WHEREIN: It is preferable that the said control apparatus is arrange | positioned at the said conveyance means, and controls conveyance of folding paper.

  The contact sensor is preferably an acceleration sensor.

  Further, it is preferable that the rear unloading and discharging unit is an intermediate unloading and discharging unit that is disposed in an intermediate unloading portion of the conveying unit and discharges and removes the folding paper that is being conveyed.

  According to another aspect of the present invention, there is provided a folding failure paper detection and ejection method for controlling ejection of defective folding paper folded by a folding machine, wherein a contact type sensor detects a bounce of a folding roller provided in the folding machine. Then, the control device performs a discharge operation of the loading unit discharge unit provided in the loading unit of the folding sheet conveying unit, and a discharge of the rear unloading discharge unit disposed behind the loading unit described above of the conveying unit. The control device controls the paper operation, and the control device determines whether or not the paper can be discharged by the rear unloading paper discharging means and the number of paper discharging parts in addition to the above-described loading part paper discharging means in accordance with the detection signal of the sensor. This is a faulty paper detection and discharge method.

  Further, it is preferable that the number of paper discharge units in each of the paper discharge units is determined based on a calculation result obtained from the relationship between the folding paper transfer speed or transport speed and the distance to the paper discharge position.

  Further, whether or not the paper is discharged by the rear unloading and discharging means is determined by adding a calculation time obtained by adding a detection interval time and a surplus time in which a predetermined number of folding paper sheets are continuously added to the return time of the sensor. It is preferable to set as the cargo signal length and perform the rear unloading discharge when this set value is exceeded.

  According to the present invention, the bounce of the folding roller is detected by the contact sensor. Further, in response to the detection signal of the contact sensor, the folded paper is discharged and removed at the loading part before conveyance or at the rear unloading part during conveyance or after conveyance. Therefore, even in an environment where paper dust is generated, it is possible to stably detect the occurrence of broken paper with a simple structure with high accuracy, and to improve paper discharge efficiency.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the embodiments.

  With reference to FIG. 1 and FIG. 2, an embodiment of a faulty paper detection and discharge device according to the present invention will be described. FIG. 1 is a front view showing the periphery of a folding machine of the broken paper detection / discharge device of the present embodiment. FIG. 2 is a plan view showing the configuration of the broken paper detection / discharge device of the present embodiment. Note that the defective folding paper detection / discharge device of this embodiment will be described by taking as an example the main component of a newspaper rotary press. However, in the present invention, the paper to be conveyed by folding operation is newspaper. It is not limited.

  As shown in FIGS. 1 and 2, the broken folding paper detection / discharge device 1 according to the present embodiment is generally folded by the folding machine 10 including a pair of folding rollers 11 and 12 and the folding machine 10. Transport means 40 for transporting the sheet (newspaper) 4, a contact sensor 50 for detecting the bounds of the folding rollers 11, 12, a control device 60 for calculating the bound detection signal of the sensors 50, and this control An informing unit 70 that receives an output signal from the apparatus 60 and notifies the occurrence of a broken paper, a loading unit discharge unit 80 that discharges and removes the broken paper at the loading unit 41 before conveyance, and an intermediate unloading unit that is in the middle of conveyance. 49, and an intermediate unloading means 90 for discharging and removing the defective folded paper.

  In the upper part of the folding machine 10, a cylindrical folding cylinder 2 and a saw cylinder 3 are arranged horizontally and adjacent to each other with a space through which printed newspaper 4 can pass. The folding cylinder 2 and the saw cylinder 3 are configured to be rotatable in directions facing each other by a rotation driving means (not shown). In the present embodiment, for example, the folding cylinder 2 is rotated counterclockwise and the saw cylinder 3 is rotated clockwise in the front view of FIG. The folding cylinder 2 is a drum for guiding the newspaper 4 along the outer periphery of the newspaper 4 and guiding it to folding rollers 11 and 12 described later. On the other hand, the saw cylinder 3 includes a saw blade (not shown) and is a drum for cutting the newspaper 4 introduced between the folding cylinder 2 and the saw cylinder 3.

  A pair of folding rollers 11, 12 that perform a folding operation, which is a main part of the folding machine 10, are arranged in a horizontal direction directly below the folding cylinder 2 in parallel with the folding cylinder 2 and the saw cylinder 3. These folding rollers 11 and 12 have a smaller diameter than the folding cylinder 2 and are arranged adjacent to each other in parallel in the horizontal direction with an appropriate interval for folding the newspaper 4. The folding rollers 11 and 12 are configured to be rotatable in directions facing each other by a rotation driving unit (not shown). In the present embodiment, for example, the left roller 11 rotates clockwise and the right roller 12 rotates counterclockwise in the front view of FIG.

  On the left and right sides of the lower portion of the folding cylinder 2, there are provided cylinder guides 13 and 14 that guide the newspaper 4 and that have an upper surface side that is substantially arc-shaped to prevent dropping. Further, the folding cylinder 2 includes a blade 5 extending in the axial direction. When the blade 5 is positioned directly below the folding cylinder 2, the blade 5 acts to push the newspaper 4 cut by the saw cylinder 3 between the folding rollers 11 and 12 from above.

  Below the folding rollers 11, 12, a fan 20 is provided that converts the downward movement of the newspaper 4 folded by the folding rollers 11, 12 into lateral movement. The fan 20 is arranged with the introduction port 21 facing the lower part between the folding rollers 11 and 12. In the present embodiment, for example, in the front view of FIG. 1, the fan 20 is arranged with the upper right side facing directly between the folding rollers 11 and 12, and the fan 20 is rotated by the rotation driving means 22 such as a motor. Is configured to rotate clockwise. The fan 20 has a plurality of arc-shaped mounting blades 23 arranged at equal intervals so as to form a vortex shape toward the rear in the rotation direction, and falls from the folding rollers 11 and 12. The folded newspaper 4 is received on each placement blade 23. In the fan 20 of the present embodiment, seven placement blades 23 are rotatably provided, but the number is not limited.

  Fan guides 24 and 25 are provided on the upper and right sides of the fan 20. The fan facing surface of the right side fan guide 25 is formed in an arc shape so as to follow the outer shape of the fan 20, and guides the extended end portion of the newspaper 4 received on the placement blade 23. Yes. The fan guide 25 is supported by a support member 27 that can be rotated about a rotation shaft 26 and is urged toward the fan side by a leaf spring 28 when the folding machine 10 is operated. When a paper jam occurs in the fan 20, the support member 27 is rotated backward to the right around the rotation shaft 26 to open the fan guide 25.

  Under the fan 20, loading section transfer means 42 is arranged to sequentially load and transfer the newspapers 4 folded from the respective mounting blades 23, and deliver them to the carrier loading section 41 as the conveying means 40. . The loading portion transfer means 42 includes, for example, a plurality of rollers 43 and a delivery belt 44 stretched over the rollers 43. Among these rollers 43, at least one drive roller includes a motor or the like (not shown). Are connected.

  The carrier 40 is a chain joint-shaped transport means for transporting the newspaper 4 along the two rows of guide rails 40a. For example, the guide rail 40a rises upward from the loading portion 41 toward the ceiling portion, and reaches the ceiling portion. It extends to the horizontal direction along it, descends again, and extends in the horizontal direction along the floor surface at the intermediate unloading portion 49. Two sets of folding machines 10 and the like are provided, and two systems of carriers 40 connected to these are provided. Here, the structure of the carrier 40 is not particularly limited. For example, a structure in which opening / closing gripping members for gripping the folded newspaper 4 part by part from the above-described load portion transporting means 42 are arranged in a row is exemplified.

  The folding machine 10 includes a contact-type sensor 50 that detects the bounding of the folding rollers 11 and 12. For the contact sensor 50, for example, an acceleration sensor such as a piezoelectric element that converts a pressure change into an electric signal is employed. The contact sensor 50 is attached to, for example, a support portion of the folding rollers 11 and 12 or a casing portion of the bearing, and vibration (impact) is generated when the folding rollers 11 and 12 bounce due to generation of a faulty paper. Changes are detected.

  The acceleration sensor 50 is electrically connected to the control device 60, and the control device 60 processes a bound detection signal input from the acceleration sensor 50. The control device 60 is a sequencer (PLC) that controls the conveyance of the folded newspaper by the carrier 40, and includes a counter (not shown) that counts the newspaper 4 that passes through. Further, the control device 60 is electrically connected to a notifying means 70 such as a lamp, for example, and the lamp 70 is turned on by an output signal from the control device 60 to display a warning about the occurrence of broken paper. The notification means 70 is not limited to a lamp, and may be a device that provides an audible notification such as an alarm device, or a device that provides a visual notification such as an LED display device or a liquid crystal display device.

  The loading unit 41 is provided with a loading unit discharge unit 80 that discharges and removes the broken folding paper before the conveyance when the folding machine 10 generates the broken folding paper. When the folded paper is generated in the folding machine 10, the loading unit discharge unit 80 discharges and removes the broken paper by, for example, not holding the broken newspaper 4 with the gripping member. Note that when the broken paper is generated, the warning means 70 displays a warning, so that the operator can know the occurrence of the broken paper.

  In the intermediate unloading section 49, the carrier 40 is extended along the floor surface, and the intermediate unloading section 49 is provided with an intermediate unloading discharge means 90 for discharging and removing the folding paper that is being conveyed. The intermediate unloading and discharging means 90 discharges and removes the broken paper, for example, by dropping the broken newspaper 4 that has been held by opening the gripping member. As described above, when a broken paper is generated, the warning means 70 displays a warning, so that the operator can know the occurrence of the broken paper.

  In some cases, the intermediate unloading portion 49 is not installed in the carrier 40. Even in this case, the final unloading portion 49 ′ is always installed in the final portion of the carrier 40. When the intermediate unloading part 49 is not installed, the rear unloading part 49 'is used to perform the rear paper discharge operation after the conveyance.

  Next, with reference to FIG. 3 to FIG. 7, a description will be given of a broken paper detection / discharge method according to the present invention, which is performed using the broken paper detection / discharge device 1 of the present embodiment. FIG. 3 is an explanatory view showing a form of folding failure of newspaper. FIG. 4 is a time chart in the case of only one folding / bounding. FIG. 5 is a time chart when the folding bound is continuous (convergence within 1090 ms). FIG. 6 is a time chart when the folding bound is continuous (exceeding 1090 ms). FIG. 7 is a time chart when the folding bound is continuous (interval greater than 1 second).

  In FIG. 3, the folding failure forms generated by the folding rollers 11 and 12 of the folding machine 10 include, for example, vertical folding that can be broken toward the top and bottom as shown in (A), and (B) and (C). Folding folds or folds that can be folded in the horizontal direction, such as (D). Etc. can be seen.

  When these folding failures occur, the thickness of the portion where the folding occurs is partially increased, and thus the gap between the folding rollers 11 and 12 is biased to cause a folding / bounding phenomenon. As described above, since the vibration displacement of the folding bounce is conventionally detected by the non-contact type sensor, the influence of the paper dust in the environment where the paper dust is generated as in the folding machine 10 of the newspaper rotary press. The detection accuracy was poor. However, in the folded paper detection / discharge device 1 of the present embodiment, for example, the acceleration sensor 50 is attached to the support portions of the folding rollers 11 and 12 and the bearing casing portion, so the support portions of the folding rollers 11 and 12 are supported. It is possible to detect a change in vibration (impact) such as a contact state. That is, since a change in vibration (impact) is directly detected in a contact state even in an environment where paper dust is generated like the folding machine 10 in a newspaper rotary printing press, the detection accuracy is excellent without being affected by paper dust. ing.

  A detection signal of the acceleration sensor 50 is input to the control device 60. The control device 60 performs arithmetic processing on the bound detection signal input from the acceleration sensor 50, and transmits an output signal to the notification means 70 such as a lamp when the folding / bounding is detected. In response to the output signal, for example, the lamp 70 is turned on to notify the worker that a faulty paper has occurred.

  At the same time, the control device 60 outputs an output signal for performing a paper discharge operation to the loading unit paper discharge unit 80 or the intermediate unloading paper discharge unit 90 provided in the carrier 40 in accordance with the state of occurrence of faulty paper, that is, a detection signal. Send. That is, the paper discharge control by the folded paper detection method according to the present invention is performed by controlling the carrier side. After the acceleration sensor 50 detects the bounce of the folding rollers 11 and 12, the detection signal is passed to the carrier side, and discharge control is performed by the control device of the carrier 40.

  In response to the detection signal of the acceleration sensor 50, the control device 60 discharges paper in the intermediate unloading section 49 of the intermediate unloading section 49 in addition to paper discharge in the loading section discharging section 80 of the loading section 41. Judgment of availability and the number of paper output are determined. The number of paper discharges in each paper discharge means is determined based on a calculation result obtained from the relationship between the transfer speed or transport speed of the folded newspaper 4 and the distance to the paper discharge position. Explained.

  First, as shown in FIG. 4, the paper discharge control of the folded paper in the loading unit 41 will be described. As described above, the counter of the carrier 40 counts the newspaper 4 for each copy. In addition, since the speed of the rotary printing press (capacity of two systems is 180,000 / hour) is known, the number of copies to be transferred at the distance from the folding rollers 11 and 12 to the loading portion 41 is known. For this reason, it is possible to determine what number of copies are ejected after the acceleration sensor 50 detects a bounce, and sets a value that allows for a surplus number of copies ahead and determines where to start discharging. Has been decided. When a bound detection signal is input from the acceleration sensor 50 to the control device 60, the loading unit 41 sets the number of copies until the loading unit discharging unit 80 starts the discharging operation. Further, a distance is calculated between the position from the detection part of the acceleration sensor 50 to the loading portion 41 of the carrier 40, and the value is finely adjusted according to the position of the paper that has been ejected.

  In this embodiment, the number of paper discharge units of the loading unit 41 is set to 5 regardless of the speed of the rotary printing press. This is based on the assumption that the loading unit 41 can handle paper discharge until three consecutive bounces occur at a speed of 90,000 / hour for one system of a rotary printing press. The detection interval is 80 ms when the three parts are continuous, but the calculation time is considered to be 90 ms in view of the signal fall and the margin time of 10 ms. Actually, 5 to 6 copies are discharged due to mechanical delay or the like, and there is an error of about 1 copy.

  Next, as shown in FIG. 5 to FIG. 7, a description will be given of the discharge of the folding failure paper in the intermediate unloading portion 49.

  The bound detection signal input from the acceleration sensor 50 is set to 1090 ms, which is 90 seconds added to 1 second (1000 ms), which is the return time of the sensor (switching from on to off), as the signal length for intermediate unloading of the folding failure. When the set value is exceeded, the intermediate unloading section 49 discharges paper. For example, when the intermediate unloading section 49 discharges a bit when there is a broken bit such as a gripping member that has reached the intermediate unloading section 49, a program is incorporated. In this control program, when the acceleration sensor 50 is switched from on to off, the number of sheets to be ejected is determined by calculation processing of the control device 60. A folding failure bit is set with the gripping member or the like advanced from the loading portion 41 in the intermediate unloading direction as the leading of the folding failure, and this bit is continuously set until the carrier 40 advances by the number of paper discharge portions. After the acceleration sensor 50 is turned off, the bits corresponding to the number of spare parts are set up.

  That is, as shown in FIG. 5, when the bounce converges to 1090 ms or less when the signal input time from the acceleration sensor 50 is measured and compared, only about 5 copies are discharged from the loading portion 41. Paper discharge at the intermediate unloading section 49 is not performed. In addition, as shown in FIG. 6, when the signal input time from the acceleration sensor 50 is measured and compared and exceeds 1090 ms, the intermediate unloading portion 49 is discharged after being discharged by the loading portion discharge means 80 of the loading portion 41. The intermediate unloading discharge means 90 also discharges. The number of sheets discharged at the intermediate unloading section 49 is the number of sheets obtained by adding the back margin to the folded paper. Since the rear margin number is set by time (calculation), it slightly changes depending on the speed of the rotary printing press.

  In the specification of the acceleration sensor 50 employed in the present embodiment, the output is turned on at the rising edge of the detection signal and turned off 1 second after the falling edge of the detection signal. If a new detection signal is input during 1 second that is turned on, the signal is turned on for 1 second from the fall of the signal. Therefore, as shown in FIG. 7, even if the detection continues, if the interval is longer than 1 second, the paper is discharged from the loading portion 41 again.

  In the time charts of FIGS. 4 to 7, the capacity of 2 systems is 180,000 copies / hour, and in FIG. 6, the rear margin number is set to 5 copies (200 ms obtained by subtracting 800 ms from 1 second).

  As described above, according to the folded paper detection / discharge device 1 of the present embodiment, since the bounce detection of the folding rollers 11 and 12 is performed by the contact sensor 50, in an environment where paper dust is generated. In addition, it is possible to stably detect the occurrence of broken paper with high accuracy. In addition, since it is not necessary to provide a high-speed rotating part unlike a non-contact type sensor, it can be applied to existing facilities with a simple structure such as easy wiring. Further, according to the detection signal of the contact type sensor 50, the folded paper is automatically discharged from the loading section discharge means 80 before the conveyance or the intermediate unloading discharge means 90 in the middle of the conveyance. Can be improved.

  The preferred embodiment of the present invention has been described above. However, this embodiment is an example for explaining the present invention, and is not intended to limit the scope of the present invention to this embodiment. The present invention can be implemented in various modes different from the above-described embodiments without departing from the gist thereof.

FIG. 3 is a front view showing the periphery of the folding machine of the defective folding paper detection / discharge device of the present embodiment. It is a top view which shows the structure of the folding error paper detection paper discharge apparatus of this embodiment. It is explanatory drawing which shows the form of the folding defect of a newspaper. It is a time chart explaining the folding failure paper detection discharge method of this embodiment. It is a time chart explaining the folding failure paper detection discharge method of this embodiment. It is a time chart explaining the folding failure paper detection discharge method of this embodiment. It is a time chart explaining the folding failure paper detection discharge method of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folded paper detection discharge device 4 Newspaper 10 Folding machine 11, 12 Folding roller 40 Conveying means (carrier)
41 Loading unit 49 Intermediate unloading unit 50 Contact sensor 60 Control device 70 Notifying unit 80 Loading unit discharging unit 90 Intermediate unloading unit

Claims (7)

A faulty paper detection paper discharge device that discharges and removes bad paper folded by a folding machine,
A pair of folding rollers provided in the folding machine for folding paper;
Conveying means for conveying the paper folded by the folding machine;
A contact-type sensor for detecting a bound of the folding roller;
A control device that performs arithmetic processing on the bound detection signal of the sensor;
Informing means for notifying the occurrence of a broken paper by an output signal from the control device;
A loading section discharging means that is disposed in the loading section of the conveying means and discharges and removes the folded paper before the conveyance;
A rear unloading discharge means disposed behind the loading section of the transfer means, for discharging and removing unfolded paper during transfer or after transfer;
With
The bouncing of the folding roller is detected by the sensor, and the control device controls the paper discharge operation of the load part discharge unit and the rear unloading discharge unit according to a detection signal of the sensor. Folded paper detection and discharge device.   The faulty paper detection and discharge device according to claim 1, wherein the control device is disposed in the transport unit and controls the transport of the folded paper.   The faulty paper detection / discharge device according to claim 1, wherein the contact sensor is an acceleration sensor.   The said back unloading discharge means is an intermediate unloading discharge means which is disposed in an intermediate unloading portion of the transport means and discharges and removes the folding paper that is being transported. The faulty paper detection / discharge device according to any one of the above. A folding failure paper detection and ejection method for controlling ejection of defective folding paper folded by a folding machine,
When the contact-type sensor detects the bounce of the folding roller provided in the folding machine, the control device performs a discharge operation of the loading portion discharge means provided in the loading portion of the folding sheet conveying means, and the conveying means. Controlling the paper discharge operation of the rear unloading paper discharging means disposed behind the cargo part described above,
The control device determines whether or not the rear unloading and discharging means can discharge paper and the number of paper discharge sections in addition to the above-described loading section discharging means in accordance with a detection signal of the sensor. Defective paper detection discharge method.   6. The number of paper discharge units in each of the paper discharge units is determined based on a calculation result obtained from a relationship between a folding paper transfer speed or conveyance speed and a distance to a paper discharge position. Folded paper detection paper discharge method.   Whether or not paper discharge by the rear unloading and discharging means is possible is determined by adding a calculation time obtained by adding a detection interval time and a margin time in which a predetermined number of broken paper sheets are continuously added to the return time of the sensor. The method for detecting and discharging a faulty paper according to claim 5 or 6, characterized in that the signal length is set, and when the set value is exceeded, the rear unloading and discharging are performed.

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