JP2004058550A - Checking device of curve of bound book - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a checking device of a curve of a bound book which checks up a top-and-bottom curve of the bound book with high accuracy. <P>SOLUTION: In the checking device for checking up the bound book (X) conveyed in a prescribed direction (a) of conveyance, a first sensor (14) and a second sensor (16) for detecting the position of one side (X1) of the bound book (X) are provided in the direction perpendicular to the direction (a) of conveyance, spaced from each other. A third sensor (18) and a fourth sensor (20) for detecting the position of the other side (X2) of the book (X) are provided in the direction parallel to the direction (a), spaced from each other. The third sensor (18) and the fourth sensor (20) are both constituted of laser sensors, and they have a prescribed detecting width in the direction perpendicular to the direction (a) and are so constituted that they can specify the position of the other side (X2) of the bound book (X). <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bookbinding bending inspection apparatus for inspecting the bending of a bookbinding top and bottom.
[0002]
[Prior art]
In bookbinding, there is a type in which three sides of a fore edge (front edge) and top and bottom are cut off. The fore edge is cut on the back and the top and bottom are cut parallel to each other.
[0003]
Conventionally, when inspecting the bending in the cutting direction of bookbinding, two spot sensors are arranged in front and rear in the transport direction. For example, when the bookbinding spine is conveyed forward, the bending of the spine and the fore-edge are each detected by two spot sensors.
[0004]
[Problems to be solved by the invention]
However, even if the spine and fore edge of the book are not bent, the top and bottom may be bent. For example, there is a case where the top and bottom are bent and cut with respect to the back and the fore edge to form a rhombus or a parallelogram. Conventionally, such bookbinding could not be excluded as a nonstandard product.
[0005]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a bookbinding bending inspection device capable of inspecting the bending of a bookbinding top or bottom.
[0006]
[Means for Solving the Problems]
The means for solving the problems of the present invention are as follows.
[0007]
(1) A binding bending inspection device for inspecting a bookbinding (X) being conveyed in a predetermined conveying direction (a), for detecting a position of one side (X1) of the bookbinding (X). A first sensor (14) and a second sensor (16) are provided at an interval in a direction perpendicular to the transport direction (a) to detect a position of another side (X2) of the bookbinding (X). A third sensor (18) and a fourth sensor (20) are provided at intervals in a direction parallel to the transport direction (a), and both the third sensor (18) and the fourth sensor (20) are constituted by laser sensors. And a predetermined detection width in a direction perpendicular to the transport direction (a), and configured to be able to specify the position of another side (X2) of the bookbinding (X). .
[0008]
(2) The bookbinding bending inspection device described above, wherein at least one of the first sensor (14) and the second sensor (16) is constituted by a spot sensor.
[0009]
(3) The bookbinding bending inspection device described above, wherein at least one of the first sensor (14) and the second sensor (16) is constituted by a laser sensor.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
In a preferred embodiment of the present invention, bookbinding that is being conveyed one by one continuously in a predetermined direction is inspected. For example, the bound book to be inspected is one in which the top and bottom are cut in parallel in the previous process and the fore edge (front fore edge) is cut in parallel with the spine.
[0011]
In a preferred embodiment of the present invention, two first and second sensors are provided on one side of bookbinding, and two third and fifth sensors are provided on the other side. In addition, among these first to fourth sensors, the first sensor is a laser sensor, the second sensor is a spot sensor, and the third and fourth sensors are laser sensors.
[0012]
In another preferred embodiment of the present invention, the first sensor is a spot sensor, the second sensor is a laser sensor, and the third and fourth sensors are laser sensors.
[0013]
In still another preferred embodiment of the present invention, both the first sensor and the second sensor are spot sensors, and the third and fourth sensors are laser sensors.
[0014]
In yet another preferred embodiment of the present invention, all four sensors are laser sensors.
[0015]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
FIG. 1 is a conceptual diagram showing a main part of a bookbinding bending inspection apparatus according to the present invention.
[0017]
In the illustrated example, the bookbinding to be inspected (hereinafter, referred to as a work X) transported in the flow direction a (the transporting direction a) is inspected for bending.
[0018]
In FIG. 1, the back X1, the forehead X3, the top X2, and the ground X4 of the work X are located at the front, rear, left, and right in the flow direction a, respectively.
[0019]
The inspection device 10 has a conveyor (not shown) and transports the work X in the flow direction a.
[0020]
The inspection device 10 has a frame 12 around a conveyor. The first laser sensor 14 and the second spot sensor 16 are disposed on the frame 12 at an interval in a direction forward of the flow direction a and in a direction perpendicular to the flow direction a (a direction of line cd in the drawing). Note that the first laser sensor 14 and the second spot sensor indicate their positional relationship with a band-shaped laser beam and a spot, respectively, and the overall configuration is not shown.
[0021]
The first laser sensor 14 is a sensor configured to detect the position of an object that blocks the laser beam using a belt-shaped laser beam. The band-shaped laser light has a resolution parallel to the flow direction a, and the position of the spine X1 of the work X can be specified within the band-shaped laser light region. The first laser sensor 14 is connected to a computer 22 (not shown in FIG. 1).
[0022]
The second spot sensor 16 is a sensor configured to detect the position of a target that blocks a predetermined spot. Any type of spot sensor can be used. The second spot sensor 16 is arranged at an interval to the right of the first laser sensor 14 in the drawing. A line (cd line in the figure) connecting the center of the spot of the second spot sensor 16 and the center of the belt-shaped laser beam is perpendicular to the flow direction a. The second spot sensor can detect the position of the spine X1 of the work X at the spot position. The second spot sensor 16 is connected to a computer 22 (not shown in FIG. 1).
[0023]
A third laser sensor 18 and a fourth laser sensor 20 are arranged at an interval behind the first laser sensor 14 and the second spot sensor 16 and in a direction parallel to the flow direction a. Lines (the ef lines in the figure) passing through the respective centers of the belt-shaped laser beams of the third laser sensor 18 and the fourth laser sensor 20 are parallel to the flow direction a. In FIG. 1, the arrangement of the third laser sensor 18 and the fourth laser sensor 20 is indicated by a belt-like laser beam, and the overall configuration is not shown.
[0024]
The third laser sensor 18 and the fourth laser sensor 20 are sensors configured to detect the position of an object that blocks the band laser beam using the laser beam. The band-shaped laser beam has a resolution perpendicular to the flow direction a, and the position of the top X2 of the work X can be specified within the band-shaped laser beam region. The third laser sensor 18 and the fourth laser sensor 20 are connected to a computer 22 (not shown in FIG. 1).
[0025]
An example of the arrangement relationship of the first to fourth sensors will be described.
[0026]
The center of the spot of the second spot sensor 16 is defined as a base point A, and the intersection of the cd line and the ef line is defined as a contact point B. The distance from the contact point B to the base point A and the distance from the contact point B to the center of the belt-shaped laser beam of the third laser sensor 18 are set to be equal to m. The distance from the base point A to the center of the band-shaped laser beam of the first laser sensor 14 and the distance from the center of the band-shaped laser beam of the third laser sensor 18 to the center of the band-shaped laser beam of the fourth laser sensor 20 are equal to n. .
[0027]
By arranging the sensors in this manner, when the back X1 of the work X comes into contact with the base point A, the inclination of the back X1 (displacement in the vertical direction) is determined by the top X2 detected by the third laser sensor and the fourth laser sensor. Appears as an error in the bend. Thus, the range of the error can be set in advance by numerical values.
[0028]
FIG. 2 shows a connection relationship between the computer 22 and each sensor. The computer 22 is connected to the first laser sensor 14, the second spot sensor 16, the third laser sensor 18, and the fourth laser sensor 20. The detection signal detected by each sensor is transmitted to the computer 22. The computer 22 calculates the positions of the spine X1 and the top X2 of the work X from each detection signal. A processing device (not shown) is connected to the computer 22, and determines whether or not the work is appropriate based on the calculated position of the work and performs processing.
[0029]
An example of a procedure for inspecting the work X will be described.
[0030]
The work X is transported in the flow direction a. It is assumed that the back X1 is directed forward in the traveling direction by any mechanical means. The back X1 is in contact with the second spot sensor 16. When the spine X1 comes into contact with the second spot sensor 16, detection signals of the first laser sensor 14, the third laser sensor 18, and the fourth laser sensor 20 are obtained. From the signals obtained by the first laser sensor 14 and the second spot sensor 16, the inclination (deviation) of the back X1 is obtained. From the signals obtained by the third laser sensor 18 and the fourth laser sensor 20, the inclination (deviation) of the ceiling X2 is obtained. The inclination of the top X2 is inspected by subtracting the inclination of the back X1 from the inclination of the top X2 as an error.
[0031]
FIG. 3 shows another embodiment of the present invention. Note that the same members are denoted by the same reference numerals, and description thereof will be omitted.
[0032]
In the example shown in FIG. 3, the first sensor and the second sensor in the present invention are constituted by a first spot sensor 141 and a second laser sensor, respectively.
[0033]
An example of a procedure for inspecting the work X will be described.
[0034]
The work X is transported in the flow direction a. It is assumed that the back X1 is directed forward in the traveling direction by any mechanical means. The back X1 is in contact with the first spot sensor 141. The detection signals of the second laser sensor 161, the third laser sensor 18, and the fourth laser sensor 20 when the back X1 contacts the first spot sensor 141 are obtained. From the signals obtained by the first spot sensor 141 and the second laser sensor 161, the inclination (deviation) of the back X1 is obtained. From the signals obtained by the third laser sensor 18 and the fourth laser sensor 20, the inclination (deviation) of the ceiling X2 is obtained. The inclination of the top X2 is inspected by subtracting the inclination of the back X1 from the inclination of the top X2 as an error.
[0035]
FIG. 4 shows still another embodiment of the present invention. Note that the same members are denoted by the same reference numerals, and description thereof will be omitted.
[0036]
In the embodiment shown in FIG. 4, the first sensor and the second sensor according to the present invention include a first spot sensor 142 and a second spot sensor 162, respectively.
[0037]
An example of a procedure for inspecting the work X will be described.
[0038]
The work X is transported in the flow direction a. It is assumed that the back X1 is directed forward in the traveling direction by any mechanical means. It is assumed that the spine X1 contacts the first spot sensor 142 and further contacts the second spot sensor 162. The detection signals of the third laser sensor 18 and the fourth laser sensor 20 when the back X1 contacts the second spot sensor 162 are obtained. The inclination (deviation) of the back X1 is obtained from the time lag and the transport speed when the work X contacts the first spot sensor 142 and the second spot sensor 162. From the signals obtained by the third laser sensor 18 and the fourth laser sensor 20, the inclination (deviation) of the ceiling X2 is obtained. The inclination of the top X2 is inspected by subtracting the inclination of the back X1 from the inclination of the top X2 as an error.
[0039]
In addition, even if the back X1 contacts the second spot sensor 162 and further contacts the first spot sensor 142, the bending of the ceiling X2 can be similarly inspected.
[0040]
FIG. 5 shows still another embodiment of the present invention. Note that the same members are denoted by the same reference numerals, and description thereof will be omitted.
[0041]
In the example shown in FIG. 5, the first sensor and the second sensor in the present invention are configured as a first laser sensor 143 and a second laser sensor 163, respectively.
[0042]
An example of a procedure for inspecting the work X will be described.
[0043]
The work X is transported in the flow direction a. It is assumed that the back X1 is directed forward in the traveling direction by any mechanical means. It is assumed that the back X1 is located at the center of the belt-shaped laser beam of the first laser sensor 143. When the spine X1 is located at the center of the belt-shaped laser beam of the first laser sensor 143, the detection signals of the second laser sensor 163, the third laser sensor 18, and the fourth laser sensor 20 are obtained. From the signals obtained by the first laser sensor 143 and the second laser sensor 163, the inclination (deviation) of the back X1 is obtained. From the signals obtained by the third laser sensor 18 and the fourth laser sensor 20, the inclination (deviation) of the ceiling X2 is obtained. The inclination of the top X2 is inspected by subtracting the inclination of the back X1 from the inclination of the top X2 as an error.
[0044]
In addition, when the back X1 is located at the center of the second laser sensor 163, the bending of the ceiling X2 can be inspected in the same manner even if a detection signal of another sensor is obtained.
[0045]
【The invention's effect】
According to the present invention, bookbinding bending can be inspected with high accuracy.
[0046]
If a laser sensor is used as the first sensor and / or the second sensor, it is possible to inspect the top and bottom curvature with higher accuracy.
[0047]
If a spot sensor is used as the first sensor and / or the second sensor, the device can be configured at lower cost.
[0048]
Note that the present invention is not limited to the above-described embodiment. The bookbinding inspection method is not limited to the method described in the above embodiment. The arrangement of the spot sensor and the laser sensor is arbitrary.
[Brief description of the drawings]
FIG. 1 is a schematic top view showing an example of a bookbinding bending inspection apparatus according to the present invention.
FIG. 2 is a conceptual diagram showing an example of a connection relationship between a computer and a sensor suitably used in the present invention.
FIG. 3 is a schematic top view showing another example of the bookbinding bending inspection apparatus according to the present invention.
FIG. 4 is a schematic top view showing still another example of the bookbinding bending inspection device according to the present invention.
FIG. 5 is a schematic top view showing still another example of the bookbinding bending inspection device according to the present invention.
[Explanation of symbols]
10 Bookbinding Bending Inspection Device 12 Frame 14, 143 First Laser Sensor 141, 142 First Spot Sensor 16, 162 Second Spot Sensor 161, 163 Second Laser Sensor 18 Third Laser Sensor 20 Fourth Laser Sensor 22 Computer a Transporting Direction X Work X1 Back X2 Heaven X3 Fore edge (front edge)
X4 ground

Claims (3)

A binding bending inspection device for inspecting a bookbinding (X) being conveyed in a predetermined conveying direction (a), wherein the first sensor detects a position of one side (X1) of the bookbinding (X). (14) and a second sensor (16) are provided at an interval in a direction perpendicular to the transport direction (a), and a third sensor () for detecting the position of another side (X2) of the bookbinding (X). 18) and a fourth sensor (20) are provided at an interval in a direction parallel to the transport direction (a), and both the third sensor (18) and the fourth sensor (20) are constituted by laser sensors and transported. A bookbinding bending inspection device having a predetermined detection width in a direction perpendicular to the direction (a) and configured to be able to specify the position of another side (X2) of the bookbinding (X). The binding bending inspection device according to claim 1, wherein at least one of the first sensor (14) and the second sensor (16) is configured by a spot sensor. The bookbinding bending inspection device according to claim 1 or 2, wherein at least one of the first sensor (14) and the second sensor (16) is configured by a laser sensor.

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