JP6331372B2 - Cutting dimension inspection device - Google Patents

Description

  The present invention relates to an apparatus for inspecting the size of a bound book.

  Printed materials, in particular, saddle-stitched books, are manufactured by three-way cutting after binding stacked signatures with a wire. FIG. 1 is a diagram showing a saddle stitch book manufacturing process. A booklet printed by a printing machine is bound by a bookbinding machine and then cut by a cutting device. After the cutting, the printed book is inspected by a dimension inspection machine to see if it is finished to a predetermined size, and finally is bound and shipped.

  FIG. 2 is a view showing a state where a bound book is cut by a cutting device to be a finished product. The cutting apparatus provided in the bookbinding machine positions the printing book 1 conveyed toward the cutting position at the cutting position, and also uses the cutting blades movable in the thickness direction of the printing book to provide the three edges 1a of the printing book. The predetermined portions 2a, 2b, and 2c of 1b and 1c are cut (referred to as three-way cutting), and the finished book (finished finished book) 2 is finished to a predetermined size. Note that the side 1d of the printing book 1 is the side into which the wire is driven and is not cut. The cutting in this case is generally performed, for example, by cutting 2b first and then cutting 2a and 2c simultaneously.

  Here, a cutting defect as shown in FIG. 3 may occur during cutting. FIG. 3 is a diagram showing an example of a cutting defect, and FIG. 3A shows a non-defective product finished to predetermined dimensions A and B (within an allowable range). On the other hand, FIG. 3B shows that the dimension A ′ is not a predetermined dimension, FIG. 3C shows that the dimension B ′ is not a predetermined dimension, and FIG. (The broken line indicates the dimensions of the non-defective product).

  Therefore, in order to inspect these defective products, a dimensional inspection is performed in the middle of conveyance until cutting and bundling. FIG. 4A is a top view illustrating an example of a dimension inspection method, and illustrates a case where the dimensions of the printing book 3 being conveyed in the direction indicated by the arrow 4 are inspected. A dimension inspection device is provided in the middle of transporting the printing book 3, and the dimension inspection device has a sensor 5 for obtaining the inspection timing and four sensors 6 a, 6 b, 6 c for obtaining the positions of the edges of the printing book 3. , 6d. FIG. 4B is a view of the light receiving element surface 7 of the four sensors 6a, 6b, 6c, and 6d. The four sensors are, for example, CCD light receiving elements in which a plurality of light receiving elements are arranged. The position of the edge of the book 3 is acquired by the location of the shielded element.

  In the dimension inspection apparatus, the time when the sensor 5 that acquires the inspection timing detects the leading end of the printing book 3 in the conveyance direction is set as the inspection timing, and the dimension of the line segment 8 between the sensors 6a and 6c at that timing (the dimension in the conveyance direction). ) And the dimension of the line segment 9 between the sensors 6b and 6d (the dimension in the direction perpendicular to the transport direction), and the dimension of the printing book 3 is inspected.

JP 2001-261215 A

However, in the method shown in FIG. 4, when the printing book 3 is transported obliquely when it is transported and inspected, a non-defective product is determined as a defective product. That is, the dimensions of the above-described two directions of the printing book 3 indicated by broken lines in FIG. 5 are the dimensions of the line segments indicated by 10a (dimension in the conveyance direction) and 11a (dimension in the direction perpendicular to the conveyance direction), In the case of being conveyed obliquely, the dimensions of the line segments indicated by 10b and 11b in the two directions are measured longer than the non-defective dimensions, so that it is determined that the dimension is defective. In addition, the place where the size of the printing book 3 is measured is generally the case where the printing book is conveyed in a roll, and is therefore often conveyed obliquely.

  Accordingly, an object of the present invention is to provide a cutting dimension inspection apparatus capable of inspecting the true dimension of a printing book even when the printing book whose dimensions are to be measured is conveyed obliquely.

The invention described in claim 1 of the present invention
An apparatus for inspecting the cutting dimensions of a cut print book,
Consists of a conveyance means, an inspection timing acquisition sensor, an edge position detection sensor, and a dimension calculation means,
The conveying means is a means for conveying the cut booklet,
The inspection timing acquisition sensor is a means for detecting the leading edge of the transported booklet in the transport direction and outputting the detected inspection timing information.
The edge position detection sensor detects the position of the edge of the four sides of the book, and outputs the detected edge position information, and detects the edge position at the beginning of the booklet in the transport direction. A second edge detection sensor for detecting the position of the trailing edge in the conveyance direction of the booklet, and a third and a fourth element for detecting positions of both edges orthogonal to the conveyance direction of the booklet. The edge detection sensor of
The dimension calculation means is composed of an oblique information calculation unit and a dimension calculation unit,
The oblique information calculation unit is configured to transfer the booklet from the inspection timing information obtained from the inspection timing acquisition sensor and the leading edge position information of the booklet in the conveyance direction obtained from the first edge detection sensor. To calculate the degree of slanting of
The dimension calculation unit is based on the conveyance direction and conveyance direction of the booklet obtained from the sensor that detects the edge positions of the four sides of the booklet, the dimension in the orthogonal direction, and the degree of inclination of the booklet. The cutting dimension inspection apparatus is characterized in that the size of a printing book is calculated.

The invention according to claim 2 of the present invention is
The cutting dimension inspection apparatus according to claim 1, wherein the conveyance unit is a roller conveyance apparatus.

The invention according to claim 3 of the present invention is
The cutting dimension inspection apparatus according to claim 1, wherein the conveyance unit is a belt conveyance apparatus.

The invention according to claim 4 of the present invention is
The cutting dimension inspection apparatus according to any one of claims 1 to 3, wherein the sensor for detecting the edge positions of the four sides of the printing book is a sensor including a plurality of light receiving elements.

The invention according to claim 5 of the present invention is
5. The cutting dimension inspection according to claim 1, wherein if the value measured by the dimension calculating unit exceeds an allowable value, it is determined as a cutting defective product and discharged to the outside of the conveying unit. Device.

According to the cutting dimension inspection apparatus according to the first aspect of the present invention, the oblique degree of the printing book transported by the transport means is calculated, and the two dimensions of the transport direction dimension and the direction orthogonal to the transport direction are measured. Furthermore, the dimensions in the two directions can be calculated based on the degree of inclination, and the true dimensions can be measured even when the printing book transported by the transport means is transported obliquely.

  According to the cutting dimension inspection apparatus according to claim 2 of the present invention, since the conveyance means is a roller conveyance apparatus, the inspection timing acquisition sensor and the four sensors can use a transmissive sensor, so that reflection is possible. More accurate inspection than using a mold sensor.

  According to the cutting dimension inspection apparatus of the third aspect of the present invention, since the conveying means is a belt conveying apparatus, the inspection timing acquisition sensor and the four sensors use transmission type sensors as in the roller conveying apparatus. Therefore, more accurate inspection can be performed than using a reflective sensor. Further, the belt conveying device itself is inexpensive and can be easily installed.

  According to the cutting dimension inspection apparatus of the fourth aspect of the present invention, the position of the four edges of the book is accurately determined by using a sensor having a plurality of light receiving elements as the sensor for detecting the four edges of the book. It can be detected.

  According to the cutting dimension inspection apparatus of the fifth aspect of the present invention, it is possible to discharge the defective cutting product to the outside of the conveying means, and therefore it is possible to prevent the defective product from being mixed into the non-defective product.

The figure which shows the manufacturing process of a saddle stitch book. FIG. 3 is a diagram illustrating a state in which a printed book bound by a bookbinding machine is cut by a cutting device to be a finished product. The figure which shows the example of the cutting defect generate | occur | produced at the time of cutting. (A) shows a non-defective product finished to predetermined (within tolerance) dimensions A and B. (B) shows a printing book whose dimension A ′ is not a predetermined dimension. (C) shows a printed book whose dimension B ′ is not a predetermined dimension. (D) shows the cutting defect product which became a parallelogram. (A) is a top view showing an example of a conventional cutting dimension inspection method. (B) is a view of the light receiving element surface. FIG. 6 is a diagram for explaining that a non-defective product is determined to be defective when a printed book is conveyed obliquely. The figure which shows schematic structure of the cutting dimension inspection apparatus of this invention. The figure for demonstrating the method of calculating | requiring a diagonal degree by the diagonal information calculating part which concerns on this invention, and the method of calculating | requiring a dimension by a dimension calculating part. (A-1) is a figure which shows the case where a printing book is conveyed normally (not diagonally). (A-2) is a figure which expands and shows the part shown with the broken line 40 of figure (a-1). (B-1) is a diagram showing a case where the printing book is conveyed obliquely. (B-2) is an enlarged view of a portion indicated by a broken line 41 in FIG. The figure for demonstrating the positional information which concerns on this invention. (A) is a figure which shows that the 1st edge detection sensor 26a and the 2nd edge detection sensor 26c were installed in the distance Aset. FIG. 6B is a diagram illustrating a method for obtaining the dimension 28-1 of the printing book 23; (C) is a diagram showing that the third edge detection sensor 26b and the fourth edge detection sensor 26d are installed at a distance Bset, and a method for obtaining the dimension 29-1 of the printing book 23. FIG. 6 is a diagram illustrating a method for calculating true dimensions 28 and 29 of the bookbinding book 23 by a dimension calculation unit 31. The figure for demonstrating that the printing book 43 cut | judged in the parallelogram is determined to be a dimension defect. (A) is a diagram showing a printing book 43a in which the side 2b is cut and the sides 2a and 2c are cut from now on. FIG. 6B is a diagram illustrating that the printing book 43a is obliquely sent to the cutting machine and is cut by the cutting blade 50; (C) is a diagram showing that sides 2a-1 and 2c-1 are cut obliquely. The figure for demonstrating that the printing book 43 cut | judged in the parallelogram is determined to be a dimension defect. FIG. 6D is a diagram showing that a defective book is determined to be defective when the printing book 43 is conveyed to the cutting dimension inspection apparatus at an oblique degree α = 0 degrees. (E) is a figure which shows that it is determined as a dimension defect when the printing book 43 is cut into a parallelogram and is obliquely conveyed to the cutting dimension inspection apparatus.

  An embodiment of a cutting dimension inspection apparatus of the present invention will be described with reference to the drawings.

  FIG. 6 is a diagram showing a schematic configuration of the cutting dimension inspection apparatus of the present invention. The cutting dimension inspection apparatus of the present invention shown in FIG. 6 includes a conveyance unit (not shown), an inspection timing acquisition sensor 25, edge position detection sensors 26a to 26d, and a dimension calculation unit 100.

  The conveying means is means for conveying the cut book 23 in the direction indicated by the arrow 24. By using a roller conveying device, an inspection timing acquisition sensor and four sensors described later include a transmission type sensor. Therefore, the inspection can be performed more accurately than using a reflective sensor, but the present invention is not limited to this, and a belt conveying device may be used. In the case of the belt conveyance device, the inspection timing acquisition sensor and the four sensors can use a transmission type sensor as in the case of the roller conveyance device, so that a more accurate inspection can be performed than using a reflection type sensor. Further, the belt conveying device itself is inexpensive and can be easily installed.

  The inspection timing acquisition sensor 25 is a means for detecting the leading edge in the transport direction of the transported book 23, and for example, a transmission type sensor composed of a light projecting part and a light receiving part can be used.

  The edge position detection sensors 26a to 26d are sensors that detect the positions of the edges of the four sides of the booklet, and the first edge detection sensor 26a that detects the leading edge position in the conveyance direction of the booklet. The second edge detection sensor 26c for detecting the position of the trailing edge in the conveyance direction of the booklet, and the third and fourth edge detection sensors 26b, 26d for detecting the positions of both edges perpendicular to the conveyance direction of the booklet. It consists of and.

  These first to fourth edge detection sensors are sensors each having a plurality of light receiving elements, and are provided in advance at positions where the edges of the book are read by the light receiving elements at the center of the plurality of light receiving elements. It is done. For example, a transmissive CCD array can be used for the four sensors 26a, 26b, 26c, and 26d. By using a transmissive CCD array, the edge position of the printing book 23 can be easily detected.

  The dimension calculation means includes an oblique information calculation unit 30 and a dimension calculation unit 31.

  The oblique information calculation unit 30 is a booklet conveyed from the inspection timing information obtained from the inspection timing acquisition sensor 25 and the edge position information at the beginning of the booklet conveyance direction obtained from the first edge detection sensor 26a. 23 is calculated.

  The dimension calculation unit 31 includes dimensions 28 and 29 in the conveyance direction of the printing book 23 and directions orthogonal to the conveyance direction obtained from a sensor that detects the edge positions of the four sides of the printing book 23, and the inclination degree of the printing book 23. Then, the dimensions 32 and 33 of the printing book 23 are calculated.

  A method for calculating the degree of obliqueness by the oblique information calculation unit 30 and a method for obtaining the dimensions of the line segments 28 and 29 by the size calculation unit 31 will be described with reference to FIGS. FIG. 7 (a-1) is a diagram showing a case where the printing book 23 is normally conveyed (not obliquely), and FIG. 7 (a-2) is a portion indicated by a broken line 40 in FIG. 7 (a-1). FIG. When the printing book 23 is normally conveyed, the inspection timing acquisition sensor 25 detects the leading edge 23a in the conveying direction of the printing book 23 and outputs the inspection timing information. At the timing when the inspection timing information is output, the position of the transmissive CCD array of the first edge detection sensor 26a that detects the edge position of the leading edge of the printing book 23 in the conveyance direction (for example, the CCD array starts from 256 elements). And the 128th light receiving element 26a-1 (which may have a width as 124 to 132nd) in the center thereof detects the position of the leading edge of the printing book 23 in the conveyance direction. The position of the first edge detection sensor 26a is set in advance. By doing so, when the leading edge in the transport direction of the book is detected by the 128th light receiving element 26a-1 of the light receiving element, the oblique information calculation unit 30 determines that it has been transported normally. In this case, the distance between the inspection timing acquisition sensor 25 and the first edge detection sensor 26a is X.

  In the case of FIG. 7 (a-1) in which the printing book 23 is normally conveyed, the dimension of the line segment 28 is determined from the position information read by the first edge detection sensor 26a and the second edge detection sensor 26c. The dimension of the line segment 29 is obtained from the position information read by the third edge detection sensor 26b and the fourth edge detection sensor 26d.

  FIG. 8 is a diagram for explaining the position information referred to here. FIG. 8 is a diagram for explaining the position information, taking as an example the case where the dimension of the line segment 28 is obtained from the position information read by the first edge detection sensor 26a and the second edge detection sensor 26c.

  As shown in FIG. 8A, the first edge detection sensor 26a and the second edge detection sensor 26c are set apart by a distance Aset (Aset is the same as the dimension in the transport direction 24 of the printing book 23). In addition, the edges 23a and 23c of the book 23 are respectively read by the light receiving elements at the center (for example, the 128th above) of the CCD arrays of the first edge detection sensor 26a and the second edge detection sensor 26c. Installed in advance. The position information here indicates how far the light receiving element that detects the edges 23a and 23c of the book 23 is far from the light receiving element in the central portion. That is, as shown in FIG. 8B, if the light receiving element detected by the first edge detecting sensor 26a of the edge 23a of the book 23 is the 128th position, the position information becomes “0” (zero). The position information when the light receiving element detected by the second edge detection sensor 26c of the edge 23c of the book 23 is shifted by 5 light receiving elements in the direction opposite to the conveying direction 24 from the 128th position is “plus 5”. "(If it is shifted by 5 in the same direction as the transport direction 24," minus 5 ").

  If the size of one light receiving element is 0.5 mm, for example, the size 28-1 of the printing book 23 is obtained as Aset + 0.5 mm × 5. Similarly, as shown in FIG. 8C, the position information obtained by the third edge detection sensor 26b and the fourth edge detection sensor 26d and the distance at which the two sensors 26b and 26d are previously set apart from each other. A dimension 29-1 in the direction orthogonal to the transport direction 24 is obtained from Bset (Bset is the same as the dimension in the direction perpendicular to the transport direction 24 of the printing book 23).

  A case where the printing book 23 is conveyed obliquely is shown in FIG. FIG. 7B-2 is an enlarged view of the portion indicated by the broken line 41 in FIG. When the printing book 23 is conveyed obliquely as shown in FIG. 7 (b-1), the inspection timing acquisition sensor 25 detects the leading edge 23a in the conveying direction of the printing book 23 at the timing when FIG. 2), the position of the transmissive CCD array of the first edge detection sensor 26a for detecting the position of the leading edge 23a in the transport direction of the printing book 23 is shifted from 26a-1 to 26a-2. In this case, the dimension Y of the distance between the position 26a-1 and the position 26a-2 is obtained.

The oblique information calculation unit 30 calculates the oblique degree α from the dimension Y obtained in this way and the distance X between the inspection timing acquisition sensor 25 and the first edge detection sensor 26a by α = tan ^−1. Obtained as (Y / X).

  Further, the first edge detection sensor 26a and the second edge detection sensor 26c shown in FIG. 7B-1 to the dimension 28a in the transport direction of the printing book 23, the third edge detection sensor 26b, and the second edge detection sensor 26b. A dimension 29a in a direction orthogonal to the transport direction is obtained from the four edge detection sensors 26d.

  FIG. 9 is a diagram showing a method for calculating the dimension (A1) of the line segment 28 and the dimension (B1) of the line segment 29, which are the true dimensions of the printing book 23, by the dimension calculation unit 31. In the dimension calculator 31, the true dimension of the printing book 23, that is, the line segment indicated by reference numeral 28, from the above-described obliqueness α and the dimension A1 ′ of the line segment indicated by reference numeral 28 a and the dimension B1 ′ of the line segment indicated by line segment 29 a. Dimension A1 and the dimension B1 of the line segment indicated by reference numeral 29 are calculated. That is, the true dimension A1 and the true dimension B1 of the printing book 23 are calculated from A1 / A1 ′ = cos α and B1 / B1 ′ = cos α.

  In this way, even if the printing book 23 is conveyed obliquely, the true dimension of the printing book 23 (dimension A1 indicated by reference numeral 28 and dimension B1 indicated by reference numeral 29) is calculated to calculate the dimension. It can prevent judging with a defect.

  10 and 11 are diagrams for explaining that the printing book 43 cut into a parallelogram is determined to be dimensionally defective. FIG. 10A is a diagram showing the printing book 43a in which the side 2b is first cut and the sides 2a and 2c are cut from now on (the reference numeral 1d is the side into which the wire is driven and the side is not cut). Showing). In FIG. 10B, since the printing book 43a shown in FIG. 10A is obliquely fed into the cutting machine, the sides 2a-1 and 2c-1 have cutting blades 50 (as shown in FIG. 10C). It is a figure which shows that it cuts diagonally by the space | interval of a cutting blade is set to B). As a result, the printing book 43 is cut into a parallelogram.

  FIG. 11D is a diagram showing that the printing book 43 is determined to be dimensionally defective when it is conveyed to the cutting dimension inspection apparatus at an oblique degree α = 0 degrees. That is, the dimensions measured in this case are the dimension A2 ′ indicated by the line segment 28b and the dimension B2 ′ indicated by the line segment 29b, and the dimension A2 ′ indicated by the line segment 28b is a non-defective product dimension ( Since the end side 43c is cut at a regular position), the dimension B2 ′ indicated by the line segment 29b is B2 ′> B compared to the line segment 29 (dimension: B) indicating the interval between the cutting blades. Moreover, when the value of B2 ′ exceeds a preset dimension allowable range (upper limit and lower limit), it is determined as defective.

  Further, FIG. 11E shows that the size is determined to be bad when the printing book 43 is cut into a parallelogram and is obliquely conveyed to the cutting dimension inspection apparatus. For convenience of explanation, the degree of slant is α. In this case, the dimension A3 ′ indicated by the line segment 28c and the dimension B3 ′ indicated by the line segment 29c are first measured. Further, considering the oblique degree α, the true dimension A3 indicated by the line segment 28 in this case is determined as non-defective because it is obtained from A3 / A3 ′ = cos α, but the dimension B3 indicated by the line segment 29 is B3 / B3 ′ = cos β (the β angle need not be determined). Since the printing book 43 is a parallelogram, in this case, α> β, and the dimension B4 (not shown) obtained based on the oblique degree α is B4 / B3 ′ = cos α, so the dimension B4 calculated is B3> B4. Therefore, it can be determined that the dimension is defective based on the degree of inclination α. Moreover, when the value of B4 exceeds a preset dimension allowable range (upper limit and lower limit), it is determined as defective.

  In this way, even when the printing book 43 is a parallelogram, even if the degree of inclination is 0 degree or α degree, if the printing book 23 is a parallelogram, it can be determined that the dimension is defective.

  In addition, when the true dimensions of the above-mentioned bookbindings 23 and 43 obtained by the dimension calculating unit 31 are determined to be defective, the discharge means discharges them to the outside of the conveying means, thereby preventing the introduction of defective products. I can do it.

  As described above, according to the bookbinding cutting size inspection apparatus of the present invention, the true dimension can be calculated even when transported obliquely when performing the size inspection of the printing book. A good product is not judged as a defective product.

DESCRIPTION OF SYMBOLS 1 ... Printing book 1a, 1b, 1c ... Three edge sides 1d of a printing book ... Side 2 into which the wire of a printing book is driven ... Finished product (finished printing book)
2a, 2b, 2c ... cutting place 3 ... printing book 4 ... transport direction 5 of printing book ... sensors 6a, 6b, 6c, 6d ... edge of printing book for acquiring inspection timing Sensor 7 to obtain the position of the light receiving element surface 8... Line segment 9 between the sensors 6a and 6c... Line segments 10a and 11a between the sensors 6b and 6d. 11b: Line segment 23 measured when transported obliquely ... Booklet 24 ... Direction in which the booklet 23 is transported 25 ... Inspection timing acquisition sensor 26a ... First end Edge detection sensor 26b ... third edge detection sensor 26c ... second edge detection sensor 26d ... fourth edge detection sensor 28 ... line segment 28 in the transport direction of the book 23 -1 ... The calculated dimension 29-1 of the conveyance direction 24 of the printing book 23 ... Dimension 29 in the direction orthogonal to the conveyance direction 24 of the printed book 23... Segment 30 in the direction orthogonal to the conveyance direction of the book 23 23... Oblique information calculation unit 31. 33: Size 40 of the printing book 23: a portion 41 surrounded by a broken line in FIG. 7A-1 ... a portion 43 surrounded by a broken line in FIG. 7B-1 ... parallel The printing book 50 cut into a quadrilateral ... the cutting blade 100 ... the dimension calculating means A, B ... the predetermined dimension A '... the dimension B' that is not the predetermined dimension ... the predetermined dimension No dimension Aset ... Dimension Bset in the conveying direction 24 of the printing book 23 ... Dimension X in a direction orthogonal to the conveying direction 24 of the printing book 23 ... Inspection timing acquisition sensor 25 and first edge detection sensor 26a Distance Y from the position 26a-1 to the position 26a-2.

Claims (5)

An apparatus for inspecting the cutting dimensions of a cut print book,
Consists of a conveyance means, an inspection timing acquisition sensor, an edge position detection sensor, and a dimension calculation means,
The conveying means is a means for conveying the cut booklet,
The inspection timing acquisition sensor is a means for detecting the leading edge of the transported booklet in the transport direction and outputting the detected inspection timing information.
The edge position detection sensor detects the position of the edge of the four sides of the book, and outputs the detected edge position information, and detects the edge position at the beginning of the booklet in the transport direction. A second edge detection sensor for detecting the position of the trailing edge in the conveyance direction of the booklet, and a third and a fourth element for detecting positions of both edges orthogonal to the conveyance direction of the booklet. The edge detection sensor of
The dimension calculation means is composed of an oblique information calculation unit and a dimension calculation unit,
The oblique information calculation unit is configured to transfer the booklet from the inspection timing information obtained from the inspection timing acquisition sensor and the leading edge position information of the booklet in the conveyance direction obtained from the first edge detection sensor. To calculate the degree of slanting of
The dimension calculation unit is based on the conveyance direction and conveyance direction of the booklet obtained from the sensor that detects the edge positions of the four sides of the booklet, the dimension in the orthogonal direction, and the degree of inclination of the booklet. A cutting dimension inspection apparatus characterized by calculating a size of a printing book.   The cutting dimension inspection apparatus according to claim 1, wherein the conveyance unit is a roller conveyance apparatus.   The cutting dimension inspection apparatus according to claim 1, wherein the conveying unit is a belt conveying apparatus. The cutting dimension inspection apparatus according to any one of claims 1 to 3, wherein the sensor that detects the edge positions of the four sides of the printing book is a sensor including a plurality of light receiving elements. 5. The cutting dimension inspection according to claim 1, wherein if the value measured by the dimension calculating unit exceeds an allowable value, it is determined as a cutting defective product and discharged to the outside of the conveying unit. apparatus.

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