JP2015134463A - Folding detection method using detection mark - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method which imparts a mark to an arbitrary position whose folding is to be detected of a sheet-like member on a booklet manufacturing device for transferring the member in a state of being gathered and saddle-stitched, detects the presence or absence of the mark on a transfer line of the booklet manufacturing device, and thereby detects folding of the member; and a booklet manufacturing device provided with an application mechanism of this method.SOLUTION: There is provided a method which previously imparts a mark of an arbitrary color to an arbitrary position of a sheet-like member constituting the content of a booklet whose folding is to be detected of the member on a booklet manufacturing device for transferring the member in a state of being gathered and saddle-stitched by printing, detects the presence or absence of a mark on a transfer line of the booklet manufacturing device, collates the measured result with the previously set numeric value, determines that the folding has occurred in the gathered member when the measured values are different from each other, and ejects the member from a manufacturing process.

Description

  The present invention relates to a method for detecting a fold generated in a member on a machine of a booklet manufacturing apparatus in a conveying process or a collating process in manufacturing a booklet composed of sheet-like members.

  For passport booklets, bankbooks, student ID cards, etc., the necessary number of members that make up the contents of the booklet are collated, the collated members are glued, and saddle stitched by means of sewing, wire binding, etc. Is manufactured by folding along the saddle stitched part and cutting the blank part. Rectangular paper and plastic sheets are mainly used for the members that make up the content page, but some parts of the paper and plastic sheets are folded during human handling, such as in the process of transporting these members and loading them. Event (hereinafter referred to as folding) may occur.

  Folding often occurs when a part such as paper or plastic sheet is brought into contact with a machine part on a conveying line in a manufacturing process, in addition to the case where it is caused by human handling when a member such as paper or plastic sheet is inserted.

  When cutting a booklet in which folding has occurred, if the folded portion of the booklet is developed, a shape defect that deviates from the normal product standard dimensions will result, so far the solutions described in the following patent documents etc. Has been considered.

  In Patent Document 1, an internal fold, an external fold, a tear, etc. generated when a web-like (band-like) printed sheet is continuously folded into a predetermined shape by a sheet folding machine connected to a discharge unit of a printing press. The monitoring device which detects the defect by observing the end surface part of the printing sheet is disclosed.

  In Patent Document 2, when the sheets are stacked in a certain quantity, the folding in the conveyance direction, the length, and the conveyance direction are orthogonal to the corner folding that occurs in the middle of conveying the rectangular paper sheets one by one. An apparatus for detecting corner breakage by measuring the direction breakage and length is disclosed.

  In Patent Document 3, with a certain number of printed signatures accumulated, the signatures attached to the back of the signatures are prevented in order to prevent missing or incorrect signatures for missing signatures or irregular signatures. A technique is disclosed in which an arrangement pattern is captured as an image by a detection camera, and an operator visually confirms the image displayed on the monitor, thereby confirming that the arrangement pattern is constant.

  In Patent Document 4, after collating a required number of members such as paper and plastic sheets that form the contents of a booklet, the collating member is transported to the binding portion in the on-machine process until the four corners or the center of the collating member. And the thickness of the four corners are detected, and the measurement results of the thickness are collated, or the respective measurement results are collated with the numerical values stored in advance. In the case where there is a measured value different from the stored numerical value, it is determined that corner breakage has occurred in the collating member, and a method of discharging from the manufacturing process is disclosed.

JP 2001-39623 A JP 59-184994 A Japanese Patent Publication No. 8-13577 JP 2009-137224 A

  However, the techniques described in Patent Documents 1 and 2 detect corner breaks in the process of transporting signatures or sheets every predetermined multiple sheets or one by one, and pass through the corner break detection sensor. From when the stacking part (collating part) to the stacking part (collating part) cannot be detected, and it is not possible to detect the folding that has occurred in the members in the required quantity. Absent.

  The technique described in Patent Document 3 is for checking whether or not there is a missing or broken signature from an image obtained by a detection camera in a state where the signature is collated. Is not described.

The technique described in Patent Document 4 is the size of the case where there is a variation in the thickness of a member such as paper or a plastic sheet, or the thickness of the measurement part varies depending on the shape of the corner fold or fold. Therefore, there is a problem that corner breakage cannot be detected.
As described above, a technology for detecting folding without being affected by the thickness of the member or the folded shape in a state where a necessary number of members such as paper and plastic sheets are collated has not been disclosed so far. Therefore, it was necessary to supplement with human confirmation.

  The present invention provides a method that enables detection of corner folds and folds occurring in members in a state where a necessary quantity is accumulated on a booklet manufacturing apparatus.

  The present invention is a method of detecting a fold generated in a booklet manufacturing apparatus that transports a sheet-like member constituting the contents of a booklet in a state of being collated and saddle-stitched, and detects the fold. From a photoelectric sensor installed in an arbitrary color by printing in advance at an arbitrary position of the member to be desired, and installed in the transport line of the booklet manufacturing apparatus immediately above a place where the arbitrary position is temporarily stopped during the transport The amount of light reflected when the light is irradiated and the arbitrary position receives the irradiation light is detected by the light receiving unit of the photoelectric sensor, and the difference between the value detected by the light receiving unit and a preset value Is determined by the determination means, and if there is a difference between the detected value and a preset value, it is determined that folding has occurred.

  The present invention is a method of detecting a fold generated in a booklet manufacturing apparatus that transports a sheet-like member constituting the contents of a booklet in a state of being collated and saddle-stitched, and detects the fold. If the desired position of the member is the same regardless of the type of the member, a mark having a different color for each member is given to the arbitrary position of each member in advance by printing, and transported by the booklet manufacturing apparatus. In the line, light is emitted from a photoelectric sensor installed immediately above a place where the arbitrary position is temporarily stopped during conveyance, and the amount of light reflected when the arbitrary position receives the irradiated light is received by the photoelectric sensor. As a result of determining the difference between the value detected by the light receiving unit and the value detected by the light receiving unit and the preset value by the determining means, at least one of the detected values is set in advance. If there is are to values and differences, in which it is determined that Orekomi has occurred.

  The present invention is provided with alarm means for notifying the folding when the folding of the sheet-like member is detected.

  In the present invention, when the folding of the sheet-like member is detected, the sheet-like member determined to be folded is automatically discharged from the booklet manufacturing apparatus.

  According to the present invention, as long as it is a member that can be provided with a detection mark in advance, such as a paper or a plastic sheet constituting the contents, the thickness and material of the member, the generated corner fold, the variation in the size and thickness of the fold, etc. Folding can be detected without being affected by the element.

  According to the present invention, since the defective booklet in which the folding is detected is automatically discharged, it is not necessary to stop the entire system due to the folding, so that it is possible to prevent the work efficiency from being lowered.

  The best mode for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the best mode for carrying out the invention described below, and various other embodiments are possible as long as they are within the scope of the technical idea described in the claims. included. The definition of the term is “member” if the paper or sheet making up the booklet is a single piece (one piece), and “collate” if the member is in a state where a predetermined quantity is loaded (collated). Member ".

  A mark of an arbitrary shape and color is printed at an arbitrary position where it is desired to detect folding of a member such as paper or plastic sheet forming the contents of the booklet. The mark is detected by irradiating light from a photoelectric sensor installed immediately above the mark in a state where the arbitrary position is temporarily stopped in the middle of conveyance, and calculating the amount of light reflected when the arbitrary position receives the irradiated light. The value detected by the light receiving unit of the photoelectric sensor and the value detected by the light receiving unit are collated with a preset value.

  At this time, if the detected value is not a preset value, it is determined that the collating member has been folded, and a mechanism is provided that issues an alarm and automatically ejects the booklet from the booklet manufacturing apparatus.

  Examples of the present invention will be described. In this embodiment, the members constituting the content page of the booklet are four white papers, and an arbitrary position where the folding of the members is desired to be detected is the uppermost white paper edge central portion. Further, the mark has an arbitrary shape that can be detected by a sensor and a detector such as a camera, and the method of applying the mark may be a printing or pasting method. The detection / collation element may be the color reflection density of the mark, the shape of the mark, the pattern, or the like, but in this embodiment, the mark shown in FIG. 1 is given by printing to detect the color reflection density.

Example 1
In the first embodiment of the present invention, a mark is printed in advance on the center portion of the second sheet edge from the uppermost part of the collated and saddle-stitched sheet-like member. The mark to be printed has a rectangular shape and is black. In addition, on the machine of the booklet manufacturing apparatus that conveys the collating member, a small digital laser is used as a sensor that irradiates the printed mark with light and detects the amount of light reflected when receiving the irradiated light at the light receiving unit. A sensor was installed. FIG. 2 shows an overview of the sensor, which irradiates light from the light projecting portion of the sensor head and detects the reflected light by the light receiving portion of the head, and is a kind of general photoelectric sensor.

  The location where the sensor is installed is located above the location where the collating member once stops on the machine of the booklet manufacturing apparatus, and the light projecting portion and the light receiving portion of the sensor head are directly above the mark. In addition, a suction turning mechanism is provided at the location as a mechanism for lifting only the member that is superimposed on the member on which the mark is printed while detecting reflected light.

  FIG. 3 is a configuration diagram of a measurement unit that detects a mark in a sensor that conveys a collating member on which a mark is printed and is arranged immediately above the mark. As shown in the figure, the collating member once stops at the place where the sensor is installed, and only the top white paper is lifted upward by the suction turning mechanism, and the sensor head is printed on the portion where the second mark is printed from the top. The light irradiated from the light projecting part of the light hits. In this case, if no folding has occurred in the center portion of the second sheet from the top of the mark printed, the numerical value measured by the sensor is the same value as the setting value assumed when there was a mark in advance, A normal product shown in FIG. 4 is formed on the second white paper from the uppermost portion, which is determined to be normal and cut in the cutting process of the booklet manufacturing apparatus.

  In addition, when it cuts in the state in which the folding has generate | occur | produced, the abnormal article shown in FIG. 5 is formed.

However, as shown in FIG. 6, if a fold has occurred, the numerical value measured by the sensor placed immediately above the mark is different from the set value assumed in advance when there is a mark, Judgment is made, an alarm is issued, and the booklet manufacturing apparatus automatically discharges it.
(Example 2)

  In the second embodiment of the present invention, marks are printed in advance on the second and third sheet end central portions from the top of the collated and saddle-stitched member. The mark to be printed has a rectangular shape. In addition, since the place which prints a mark becomes the same position in the 2nd sheet and the 3rd sheet member, two different colors are used for each mark. In this embodiment, the mark printed on the second sheet is black, and the mark printed on the third sheet is gray. In addition, a small digital laser sensor is used as a sensor that irradiates a printed mark on a machine of a booklet manufacturing apparatus that conveys the collating member and detects the amount of light reflected when the irradiated light is received at a light receiving unit. Was installed.

  The place where the sensor is installed is located above the place where the collating member once stops on the machine of the booklet manufacturing apparatus, and the light projecting part and the light receiving part of the sensor head are located directly above the mark. In addition, a suction turning mechanism using soccer as a suction port is provided at the location as a mechanism for lifting only the member that is overlaid on the member on which the mark is printed.

  FIG. 7 is a configuration diagram of a measurement unit that detects a mark in a sensor that conveys a collating member on which a mark is printed and is arranged immediately above the second black mark from the top. As shown in the figure, the collating member is temporarily stopped at the place where the sensor is installed, and only the top blank sheet is lifted upward by the suction turning mechanism, and the second end of the second sheet is folded from the top. Otherwise, the numerical value measured by the sensor placed above the mark is the same as the set value that was assumed in advance when the mark was present. It is transported to just below the next sensor installed to detect the gray mark printed on the. Further, a guide rail for guiding the uppermost white paper lifted by the suction turning mechanism while being lifted is provided on a path for transporting the member to a position immediately below the next sensor.

  However, as shown in FIG. 8, in the state where the folding has occurred, the numerical value measured by the sensor arranged immediately above the second black mark from the top is printed on the third sheet from the top. The measured value of the gray mark is different from the setting value assumed in advance when the black mark is present. Therefore, it is determined to be abnormal, an alarm is issued, and the booklet manufacturing apparatus automatically discharges it.

  FIG. 9 shows that the collating member in the case where no folding has occurred in the center portion of the second sheet from the top is transported to the position immediately below the next sensor, and the third gray mark from the top is It is a block diagram of the measurement part which detects a mark in the sensor arrange | positioned immediately above. As shown in the figure, the collating member temporarily stops at the place where the sensor is installed, and the second sheet of white paper is lifted upward from the uppermost part by the uppermost white sheet lifted by the guide rail and the suction turning mechanism. The mark is detected by a sensor arranged at a position directly above the mark printed at the center of the edge of the third sheet from the top. If there is no crease at the center of the third sheet, the value measured by the sensor placed above the mark is the same as the set value that was assumed in advance when the mark was present. Determine and convey to the stacking unit of the booklet manufacturing apparatus.

  However, as shown in FIG. 10, if a fold has occurred, the value measured by a sensor arranged immediately above the mark is a setting value that is assumed to be the third mark from the top in advance. Therefore, it is determined as abnormal, an alarm is issued, and the booklet manufacturing apparatus automatically discharges it.

In the second embodiment, the position where the mark is printed is the same position in the second and third members, and two different colors are used for each mark. This can also be realized by changing the printing position of the mark for each member in the range and arranging a sensor corresponding to each mark. In this case, the same color can be used for the second and third members of the mark.

It is a figure which shows the state which provided the mark to the sheet-like member. It is a figure which shows the outline | summary of a laser sensor. It is a figure which shows the detection of the mark provided to the 2nd sheet | seat from the uppermost part of the collation member. It is a figure which shows the state which cut | judged the member which provided the mark to the 2nd sheet | seat from the top. It is a figure which shows the state which cut | judged the member to which the mark was provided to the 2nd sheet | seat from the uppermost part which has produced the folding. It is a figure which shows the state which the folding has generate | occur | produced in the collating member which gave the mark to the 2nd sheet | seat from the uppermost part. It is a figure which shows the detection of the mark provided to the 2nd sheet | seat of the collating member which provided the mark to the 2nd sheet | seat and 3rd sheet | seat from the uppermost part. It is a figure which shows the state in which folding occurred in the 2nd member of the collating member which gave the mark to the 2nd sheet and the 3rd sheet from the top. It is a figure which shows the detection of the mark provided to the 3rd sheet | seat of the collating member which provided the mark to the 2nd sheet | seat and 3rd sheet | seat from the top. It is a figure which shows the state in which folding occurred in the 3rd member of the collating member which gave the mark to the 2nd sheet and the 3rd sheet from the uppermost part.

Claims (4)

  This is a method of detecting a fold generated in the member on the machine of the booklet manufacturing apparatus that conveys the sheet-like member constituting the contents of the booklet in a state of being collated and saddle-stitched. A mark is given in an arbitrary color by printing in an arbitrary position in advance, and in the transport line of the booklet manufacturing apparatus, the member is irradiated with light from a photoelectric sensor installed immediately above a place where the member temporarily stops during transport, A light amount reflected when a mark at an arbitrary position receives the irradiation light is detected by a light receiving portion of the photoelectric sensor, and a difference between a value detected by the light receiving portion and a preset value is determined. A fold detection method using a detection mark, in which a fold is determined when there is a difference between the detected value and a preset value.   This is a method of detecting a fold generated in the member on the machine of the booklet manufacturing apparatus that conveys the sheet-like member constituting the contents of the booklet in a state of being collated and saddle-stitched. When the arbitrary position is the same regardless of the type of member, a mark having a different color for each member is preliminarily printed on the arbitrary position of each member, and in the transport line of the booklet manufacturing apparatus, Light is irradiated from a photoelectric sensor installed immediately above the place where the member is temporarily stopped during conveyance, and the amount of light reflected when the mark at the arbitrary position receives the irradiation light is detected by the light receiving unit of the photoelectric sensor Then, as a result of determining the difference between the value detected by the light receiving unit and a preset value by the determining means, at least one of the detected values is set in advance. If there is a certain value and the difference, it determines that Orekomi occurs, Orekomi detection method using the detection mark.   3. The folding detection method according to claim 1, further comprising alarm means for notifying the folding when the folding of the sheet-like member is detected.   A discharge means is provided for automatically discharging the sheet-like member, which is determined to have been folded when the folding of the sheet-like member is detected, from the booklet manufacturing apparatus. Item 4. The folding detection method according to any one of Items 1 to 3.

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