JP2017219358A - Inspection device of roll-like inspection object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inspection device of a roll-like inspection object that can be installed in either of in-line and off-line manners, can be finished into either of a roll and sheet, and corresponds to various printing machines or post-processing machines, by modularizing the inspection device.SOLUTION: An inspection device 1 of a roll-like inspection object includes inspection object feeding means 4 for feeding a roll-like inspection object R to image acquiring means 2, and it feeds the inspection object to the image acquiring means whether the inspection object is in a wound state or in a band state. The inspection object feeding means is controlled on the basis of the slack condition of the inspection object detected by a sensor 5 so that the inspection object feeding means does not pull the inspection object too strongly.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an inspection apparatus for detecting defects in a roll-shaped object to be inspected, and in particular, the inspection apparatus can be modularized so that the inspection apparatus can be installed in-line or off-line, finished on a roll or a sheet, and various printing machines. The present invention also relates to a roll inspection object inspection apparatus corresponding to various post-processing machines such as a cutting machine.

  As an inspection device for a roll-shaped inspection object, it has a feeding device that feeds the inspection object unwound from the supply roll, and detects the arrival of the inspection object from the upstream side in the inspection object feed path. Proposal is made to detect the minute stains or missing prints on the inspected object by arranging the trigger sensor to perform and the camera that acquires the predetermined inspection area as an image and inspecting based on the acquired image (For example, refer to Patent Document 1).

  As another inspection apparatus for a roll-shaped inspection object, a trigger sensor that detects the arrival of a label on the inspection object is provided downstream of the inspection object in the transfer direction from a camera that acquires a predetermined inspection area as an image. There has been proposed a technique for detecting a defect including a dropout of a label by setting an image acquisition timing based on the arrival time of a label detected by a trigger sensor (see, for example, Patent Document 2). ).

JP2002-216070 (paragraphs 0017, 0044, FIG. 1) JP 2007-58386 (paragraphs 0013 and 0021, FIG. 1)

  However, in the inspection apparatus for a roll-shaped object to be inspected according to Patent Document 1, the feeding device that feeds the object to be inspected is configured by a supply roll and a take-up roll. It will be limited to the inspection object in the state of being done.

  Further, the roll-shaped inspection object inspection apparatus according to Patent Document 2 is configured so that the inspection object fed from the unwinding reel around which the inspection object is wound is wound around the take-up reel. Therefore, what can be inspected is limited to the inspected object in the wound state.

  Therefore, in the present invention, the above-described problems are solved, and the defect can be detected even in a roll-shaped inspection object that remains in a belt shape in addition to the roll-shaped inspection object in a wound state, various printing machines, An object of the present invention is to provide a roll-shaped inspection object inspection apparatus that can be connected to various post-processing machines such as a cutting machine.

  In order to solve the above-described problem, in the invention according to claim 1, an inspection apparatus for a roll-shaped inspection object is acquired by an image acquisition unit that acquires a predetermined inspection region of the inspection object as an image, and the image acquisition unit. The image processing apparatus includes a determination unit that determines whether the inspection object has a defect by comparing the image with a reference image that is registered in advance, and an inspection object feeding unit that sends the inspection object to the image acquisition unit.

  In the invention according to claim 2, a sensor for detecting the degree of sagging of the inspection object sent to the inspection apparatus is provided in the inspection apparatus for the roll-shaped inspection object. Then, the inspection object feeding means is controlled based on the slackness of the inspection object detected by the sensor.

  According to the first aspect of the present invention, the roll-shaped inspection object inspection apparatus has the inspection object feeding means for sending the inspection object to the image acquisition means, so that the inspection apparatus can be replaced. It can be an element (also called a “module”). Therefore, according to the invention according to claim 1, the inspection apparatus can be connected to various printing machines and various post-processing machines such as a sheet cutter and a slitter, and the inspection apparatus can be connected to various printing machines and post-processing. It can correspond to the machine.

  Here, the effect of connecting the inspection apparatus to various printing machines and post-processing machines will be described in more detail. According to the first aspect of the present invention, the roll-shaped inspection object inspection apparatus has the inspection object feeding means for sending the inspection object to the image acquisition means, so that the inspection object feeding means is supplied. There is no need to rely on the rotational drive of the roll and the take-up roll. Therefore, according to the invention which concerns on Claim 1, the defect of a to-be-inspected object can be detected not only about the to-be-inspected object in the state wound up but also about the to-be-inspected object as a strip | belt. Therefore, according to the first aspect of the present invention, the strip-like inspection object discharged from the printing machine is connected to one line (also referred to as “inline”), in other words, the inspection apparatus is connected to the printing machine. Thus, printing and inspection can be performed as a series of work steps. Furthermore, according to the invention which concerns on Claim 1, since an inspection apparatus can be connected also to another printing machine, one inspection apparatus can be made to respond | correspond to various printing machines.

  According to the first aspect of the present invention, since it is not necessary for the inspection object feeding means to depend on the rotational drive of the supply roll and the take-up roll, the inspection object can be discharged in a belt-like form without being wound up. . Therefore, according to the first aspect of the invention, the strip-like inspection object discharged from the inspection apparatus is a single line (also referred to as “inline”), in other words, a sheet cutter or a slitter in the inspection apparatus. By connecting post-processing machines such as, inspection and finishing can be performed as a series of work steps. Furthermore, according to the invention which concerns on Claim 1, since another post-processing machine can also be connected with an inspection apparatus, one inspection apparatus can also be made to respond | correspond to various post-processing machines.

  According to the second aspect of the present invention, the roll-shaped inspection object inspection apparatus is provided with the sensor for detecting the slackness of the inspection object sent to the inspection apparatus. Since the inspection object feeding means is controlled on the basis of the degree of slack of the inspection object detected by the sensor, a printing failure occurs even if the inspection apparatus is connected to the printing press and inline inspection is performed. There is nothing.

  Here, the effect that printing does not cause a problem even if it is inlined will be described in more detail. In general, since a printing press performs printing while intermittently feeding paper, a roll-like inspection object is also intermittently discharged and intermittently supplied to the inspection apparatus. Therefore, if the inspected object feeding means continues to feed the inspected object at a constant speed, the inspected object feeding means pulls the inspected object too much, causing a problem in printing. However, according to the second aspect of the present invention, since the inspection object feeding means is controlled based on the state of the inspection object sag detected by the sensor, the sag of the inspection object sent to the inspection apparatus The condition can be kept constant. Therefore, according to the second aspect of the invention, the inspection object feeding means can prevent the inspection object from being pulled to such an extent that the inspection object sags. Can be prevented. Therefore, according to the second aspect of the present invention, it is possible to prevent inconvenience when in-line inspection is performed, so that the inspection apparatus can be modularized and can correspond to various printing machines.

  Further, according to the invention according to claim 2, since the inspection object feeding means is controlled based on a physical index, that is, the degree of sag of the inspection object sent to the inspection apparatus, The inspection object feeding means can be controlled without exchanging electrical signals between them. Therefore, the inspection apparatus can be connected to various printing machines, and the strip-like inspection object discharged from the printing machine can be printed inline and inspected as a series of work steps.

It is a perspective view of the inspection apparatus of the roll-shaped to-be-inspected object which concerns on embodiment. It is a side view which shows the installation state in-line about the inspection apparatus of the roll-shaped to-be-inspected object which concerns on embodiment. (A) is a side view illustrating a case where the rotational force is not transmitted to the infeed roller in the side view for explaining the mechanism for controlling the inspected object feeding means in the roll-shaped inspected object inspection apparatus according to the embodiment. (B) is a side view showing a case where the rotational force is transmitted to the in-feed roller. It is a side view which shows the installation state offline about the inspection apparatus of the roll-shaped to-be-inspected object which concerns on embodiment.

  First, a basic matter of creation of the present invention will be briefly described. The applicant is a manufacturer of seal and label inspection equipment and has a wealth of experience in the industry for about 30 years working on inspection and finishing equipment in the seal and label printing industry. And the applicant has many brains not only in Japan but also overseas, and not only limited information around the company, but also a wide range of brains across borders and industries, various consultations from customers I have responded quickly.

  The applicant considers that it is one of the pride that it continues to deliver devices with various specifications that differ from customer to customer by a custom-made method. And the applicant does not “install the customer by selecting an existing device”, but by “delivering the device according to each customer's specifications”, the user can easily and easily use the device. I try to use it. The present invention was created from the desire to use a device that is easy and easy to use.

  The inventor wants to use a user-friendly device that is easy and easy to use, and the customer says, “The number of customers who request inspection of seals and labels has increased. I can't attach a sticker / label inspection device to all of the presses. " Here, some of the label / label inspection apparatuses are in-line installed in a printing machine and are offline as an apparatus different from the printing machine. And while in-line products are excellent in labor saving and efficiency, they are dedicated to the printing machine, so customers with multiple printing machines install seal / label inspection devices on all printing machines. That is impossible in cost. Further, when inspection is not required, the seal / label inspection apparatus mounted on the printing press is wasted. On the other hand, since offline inspections are performed in a separate process from printing, the number of operations increases, and the burden on the customer for inspection increases.

  Therefore, the inventor considered that if the seal / label inspection apparatus is modularized, the seal / label inspection apparatus can be delivered to the customer without excessive or wasteful use.

  And the inventor found that, in the existing seal / label inspection apparatus, the seal / label feeding means depends on the rotational drive of the supply roll and take-up roll of the printing press / inspection machine. If it is not necessary to depend on the rotation drive of the supply roll and the take-up roll, the seal / label inspection device can be installed in-line or off-line, and it can be applied to various printing machines and post-processing machines. It has come to be.

  Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. FIG. 1 is a perspective view of a roll inspection object inspection apparatus according to an embodiment. As shown in FIG. 1, a roll-shaped inspection object inspection apparatus 1 includes an image acquisition unit 2 that acquires a predetermined inspection region of a roll-shaped inspection object R as an image, and an image acquired by the image acquisition unit 2. And determining means 3 for determining the presence or absence of a defect of the inspection object R in comparison with a reference image registered in advance, and an inspection object feeding means 4 for sending the inspection object R to the image acquisition means 2 Has been. The roll-shaped inspection object inspection apparatus 1 includes a sensor 5 that detects the slackness of the inspection object R sent to the inspection apparatus 1, and the inspection object feeding means 4 is detected by the sensor 5. It is controlled based on the slackness of the inspection object R. In addition, the roll-shaped inspection object inspection apparatus 1 is provided with a detachable raw unwinding shaft 8 for setting the inspection object in a wound state.

  The image acquisition means 2 is a means for acquiring a predetermined inspection area of the inspection object R as an image, and here is configured to include a camera and illumination not shown. The image acquisition means 2 acquires characters, pictures, etc. printed in a predetermined inspection area of the inspection object R, and the predetermined inspection area itself of the inspection object R as an image. Then, the image acquired by the image acquisition unit 2 is sent to the determination unit 3. Note that if a predetermined inspection area itself of the inspection object R is acquired as an image, a defect of the inspection object R itself can be detected.

  The determination means 3 is a means for determining the presence or absence of a defect in the inspection object R by comparing the image acquired by the image acquisition means 2 with a reference image registered in advance, and is configured with a personal computer here. . And the determination means 3 is comprised so that the result of determination may be displayed on the touch panel 6, and the result of determination may be transmitted to a label marker (not shown) to mark a defective portion.

  The inspection object feeding means 4 is a means for sending a roll-shaped inspection object R to the image acquisition means 2, and here is configured to include an infeed roller 4a and an outfeed roller 4b. Here, the in-feed roller 4a is a drive roller provided for feeding the roll-shaped inspection object R to the image acquisition means 2 through the guide plate 7 from the paper supply side. The outfeed roller 4b is a drive roller provided to send the roll-shaped inspection object R from the image acquisition means 2 to the paper discharge side. In the roll inspection object inspection apparatus 1 according to the embodiment, the outfeed roller 4b is rotated slightly faster than the infeed roller 4a so that the image acquisition means 2 is tightly stretched. By sending the inspection object R, the image acquisition means 2 can acquire an appropriate image.

  The sensor 5 is a detector that detects the slackness of the roll-shaped inspection object R sent to the inspection apparatus 1, and is provided below the guide plate 7 here. The sensor 5 detects the degree of sag of the roll-shaped inspection object R, more specifically, the fact that the light projected from the sensor 5 is blocked by the inspection object R, thereby detecting that the inspection object R has a desired sag. doing. And in the inspection apparatus 1 of the roll-shaped to-be-inspected object which concerns on embodiment, the to-be-inspected object sending means 4 is controlled based on the sagging condition of the to-be-inspected object R detected by the sensor 5. FIG. .

  The unwinding shaft 8 is a shaft for setting the inspection object in a wound state, and the belt-like inspection object R discharged from the printing press as shown in FIG. If a defect is detected, it can be removed.

  FIG. 2 is a side view showing an in-line installation state of the roll-shaped inspection object inspection apparatus 1 according to the embodiment. Here, as shown in FIG. 2, a roll-shaped inspection object inspection apparatus 1 is connected to a printing press P and a cutting machine C.

  As shown in FIG. 2, the inspection apparatus 1 for a roll-shaped object to be inspected according to the embodiment includes an infeed roller 4a and an outfeed roller 4b. Not only the object to be inspected but also the object to be inspected as a band, here, the object to be inspected R as it is discharged from the printing press P can be sent to the image acquisition means 2. Also, the roll-shaped inspection object inspection apparatus 1 can send the belt-shaped inspection object R from the image acquisition means 2 to the cutting machine C. Therefore, the roll inspection object inspection apparatus 1 can be installed in-line in addition to the offline installation as in the conventional inspection apparatus. And in the inspection apparatus 1 of a roll-shaped to-be-inspected object, in addition to the roll finishing which winds up to-be-inspected object like the conventional inspection apparatus, the to-be-inspected object can be cut | judged and sheet finishing can also be performed.

  FIG. 3 is a side view for explaining a mechanism for controlling the inspection object feeding means 4 (in-feed roller 4a and out-feed roller 4b). 3A is a side view showing a case where the rotational force is not transmitted to the infeed roller 4a, and FIG. 3B is a side view showing a case where the rotational force is transmitted to the infeed roller 4a. It is.

  As shown in FIG. 3A, in the roll-shaped inspection object inspection apparatus 1 according to the embodiment, the sag of the inspection object R discharged from the printing press P is reduced. Specifically, When the light projected from the sensor 5 is not interrupted by the inspection object R, it is controlled so as not to transmit the rotational force to the infeed roller 4a. Thus, since the infeed roller 4a is controlled based on the slackness of the roll-shaped inspection object R in the roll-shaped inspection object inspection apparatus 1, the state shown in FIG. Is maintained. Therefore, in the inspection apparatus 1 for a roll-shaped inspection object, the infeed roller 4a does not pull the inspection object R with such a strength as to cause a problem in printing.

  Here, the mechanism for controlling the in-feed roller 4a will be described in more detail. Since the recent printing press P performs printing while intermittently feeding paper, the roll-shaped inspection object R is also intermittently discharged and intermittently for the inspection apparatus 1 for the roll-shaped inspection object. Paper is fed. Therefore, in the inspection apparatus 1 for a roll-shaped inspection object according to the embodiment, when the sag of the inspection object R decreases in accordance with the inspection object R that is intermittently fed, the infeed roller 4a rotates. By controlling so as not to transmit force, the inspection object R is not pulled any more. Also, in the case of the printing press P that performs printing while continuously feeding paper, if the sagging of the inspection object R is reduced and the sagging of the inspection object R is reduced, a rotational force is applied to the infeed roller 4a. By controlling so as not to transmit, the infeed roller 4a is controlled without exchanging electrical signals with the printing press P.

  As described above, in the roll-shaped inspection object inspection apparatus 1 according to the embodiment, the infeed roller 4a is controlled based on the physical index of the slackness of the inspection object R discharged from the printing press P. Therefore, it is not necessary to exchange electrical signals with the printing press P. Therefore, the inspection apparatus 1 for the roll-shaped inspection object is connected to various printing machines, and the strip-shaped inspection object R discharged from the printing machine P is printed inline and printed and inspected in a series of work steps. It can be done as

  FIG. 4 is a side view illustrating an offline installation state of the roll-shaped inspection object inspection apparatus 1 according to the embodiment. Here, as shown in FIG. 4, a winder W is attached to the inspection apparatus 1 for a roll-shaped object to be finished.

  As shown in FIG. 4, in the inspection apparatus 1 for a roll-shaped object to be inspected according to the embodiment, a roll-shaped inspection object R in a state of being wound around a raw material unwinding shaft 8 is set and is offline. A defect of the inspection object R is detected.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, in the roll inspection object inspection apparatus 1 according to the embodiment, it has been described that the inspection object feeding unit 4 is controlled so as not to transmit the rotational force to the infeed roller 4a. It may be controlled to slow down the rotation of the feed roller 4a or may be controlled to stop the rotation.

  Moreover, in the inspection apparatus 1 for a roll-shaped object to be inspected according to the embodiment, it has been described that the sensor 5 is provided below the guide plate 7, but the position of the sensor 5 may be anywhere. For example, the sensor 5 is provided so as to extend from the carriage of the inspection apparatus 1 to which the inspection object R of the inspection apparatus 1 is sent, and the distance (height) from the sensor 5 to the inspection object R is detected. It doesn't matter.

  Further, in the inspection apparatus 1 for a roll-shaped object to be inspected according to the embodiment, it has been described that the original fabric unwinding shaft 8 is detachably provided. In the case of using a machine, the raw material unwinding shaft 8 may not be provided.

  In the present invention, the roll-shaped inspected object R refers to a sheet that is opposite to a sheet (also referred to as a sheet), that is not cut into a certain size, or that is continuous.

  In addition, in the present invention, the inspection device is modularized as a replaceable component means that either the roll-shaped inspection object in a state where the inspection device is wound up or the roll-shaped inspection object in a belt shape It means that the defect of the inspection object can be detected.

DESCRIPTION OF SYMBOLS 1 Inspection apparatus of roll-shaped to-be-inspected object 2 Image acquisition means (camera)
3 Judgment means (PC)
4 Inspection object feeding means 4a In-feed roller 4b Out-feed roller 5 Sensor R Roll-shaped inspection object

Claims (2)

A roll-shaped inspection object inspection device,
The inspection device acquires an image acquisition means for acquiring a predetermined inspection region of the inspection object as an image, and compares the image acquired by the image acquisition means with a reference image registered in advance to determine whether there is a defect in the inspection object. A determination means for determining, and an inspection object sending means for sending an inspection object to the image acquisition means;
An inspection apparatus for a roll-shaped inspection object, wherein the inspection apparatus is modularized. The inspection apparatus includes a sensor that detects a slackness of an inspection object sent to the inspection apparatus,
The roll inspection object inspection apparatus according to claim 1, wherein the inspection object feeding means is controlled based on a state of slack of the inspection object detected by the sensor.

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