JP6270891B2 - Laser device for removing foreign matter from plate seaweed - Google Patents

Description

  The present invention relates to a laser device for removing foreign matter from a plate seaweed that can remove foreign matter such as sea bream, sea bream, shells, wood chips, vinyls, etc. attached to or in the plate with a laser beam.

  At the seaweed production site, when picking the cultured seaweed from the seaweed net, various foreign substances such as sea bream, sea bream, shells, shrimps, insects, wood chips, vinyl, bird feathers, tegus, paper, etc. are mixed in the raw seaweed .

  In the plate nori production line, the freshly picked raw nori is shredded finely, the foreign matter is separated by a foreign matter separating and removing device, passed through a paper making process and a dehydrating process by an automatic dryer, and then dried with warm air to produce a board. Although nori is produced, it is difficult to completely separate and remove the foreign matter shredded with the raw nori.

  Of the plate nori produced in this way, defective nori on the front and back surfaces or in the seaweed or with poorly shaped seaweed is detected by an automatic nori sorter and judged as a defective product. (See Patent Document 1).

  The defective seaweed selected as a defective product having foreign matters in the automatic seaweed sorter is visually removed one by one by a manual operation using a cutter knife or tweezers (see Patent Document 2).

  In Patent Document 2, an infrared light source that irradiates infrared light toward the nori placing plate is disposed below the nori placing plate that is transparent to infrared light. A laver inspection apparatus that has a sensitivity to light and a CCD camera that photographs the laver placed on the laver mounting plate is opposed to the top of the laver mounting plate, and displays an image captured by the CCD camera on a liquid crystal display Is described.

  This nori inspection device extracts foreign matter such as foreign matter and dust adhering to the surface of the seaweed or mixed inside, and displays it on the screen, and removes the foreign matter with tweezers while viewing this screen. To play as.

  However, the manual removal of foreign objects using tweezers etc. one by one manually is cumbersome and cumbersome, requiring a lot of time and labor for the operator. There has been proposed a dry seaweed foreign matter removing apparatus that is excellent in removing foreign matter and removing foreign matter reliably (see Patent Document 3).

  The foreign matter removing device described in Patent Document 3 is a removal that removes the detected foreign matter from the seaweed once the foreign matter inspection is performed by light emitting and receiving while detecting the position of the foreign matter while carrying the seaweed and the position of the foreign matter is temporarily stopped. In order to carry out the operation, when the operation signal is received from the control means in a method selected from the adhesion method, the suction method, or the punching method as the removing means, the light source and the light emitting and receiving of the camera are not disturbed. It moves from the retracted position to the detection position of the seaweed where the light source and camera were emitting and receiving light, and after removing foreign matter at the detected position, it moves to the original retracted position. is there. However, from the description of Patent Document 3, since there is no concrete description of the foreign material removal means for the plate seaweed, the content is unknown.

JP 2007-312651 A Utility Model Registration No. 3063915 JP-A-2015-198594

  Therefore, the present invention aims to save labor by automating the removal of foreign objects such as sea bream, sea bream, shells, wood scraps, straw scraps, vinyls, etc. that adhere to or exist in the laver that has been done manually by the operator. Therefore, a laser device for removing foreign matter from a plate seaweed that can reliably remove foreign matter from the plate nori using a laser beam and that can regenerate the plate nori containing foreign matter without waste.

The present invention relates to a transport conveyor for transporting a plate nori having foreign matter on the inside and upper surface and / or the lower surface of the plate nori, an internal foreign matter detecting device for detecting an internal foreign matter in the plate nori along the transport conveyor, and the plate nori A foreign object detection device having an upper surface foreign object detection device for detecting an upper surface foreign material adhering to the upper surface of the sheet, and a lower surface foreign material detection device for detecting a lower surface foreign material adhering to the lower surface of the plate seaweed, following the foreign object detection device wherein toward the foreign objects detected foreign material detecting device by applying a laser beam to burn around the foreign material and foreign matter laser irradiation apparatus for removing foreign matters, which is information of the size of the foreign substance detected by the foreign object detecting device dimensions Data, X / Y coordinate data that is information on the position of the foreign matter, foreign matter information calculation device that calculates feed information for sending the laser irradiation device toward the laser irradiation position of the foreign matter, Plate nori provided with a feed control device for controlling the feed for sending the laser irradiation device to the laser irradiation position based on the dimension data, the X / Y coordinate data, and the feed information input from the object information calculation device This is a laser device for removing foreign matter.

  The plate nori foreign material removal laser device of the present invention detects the plate nori foreign matter, controls the X-direction and Y-direction feed of the laser irradiation device based on the foreign matter information of the position and size of the foreign matter, and irradiates the foreign matter with laser beams. Thus, the spot can be surely and automatically removed. As a result, it is possible to realize a significant reduction in the labor of field workers such as removing foreign substances with tweezers.

  In addition, since the foreign matter removing laser device of the present invention can reliably remove only the foreign matter detected by laser irradiation in a spot manner, the quality of the plate seaweed from which the foreign matter has been removed is ensured, and the plate containing the foreign matter. It becomes possible to regenerate the laver without waste.

It is a general view of the board nori foreign material removal apparatus of this invention. It is a figure which shows the state of the foreign material removal by the laser of the plate seaweed foreign material removal apparatus of this invention. It is a figure which shows the state which opened the hole of diameter 0.2mm by applying a laser beam.

  An embodiment of the foreign matter removing laser apparatus according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the laser device 1 for removing foreign matter according to the present invention includes a foreign matter detecting device 3 for detecting foreign matter in a plate seaweed along conveyors 2a and 2b that convey the plate laver containing foreign matter. A laser irradiation device 4 that irradiates and removes the foreign matter detected by the foreign matter detection device 3 by laser is disposed in series downstream.

  The conveyor is composed of a carry-in conveyor 2a for carrying plate laver containing foreign matter into the foreign matter detection device 3, and a carry-out conveyor 2b for carrying out plate laver after removing the foreign matter, and the carry-out conveyor 2b is used for removing foreign matter. Stops to irradiate the laser towards the foreign object.

  The foreign object detection device 3 is attached to the lower surface of the plate nori, an internal foreign object detection device that detects an internal foreign object inside the plate nori, an upper surface foreign object detection device that detects an upper surface foreign object attached to the upper surface of the plate nori. And a lower surface foreign object detection device for detecting the lower surface foreign material.

  The internal foreign matter detection device is disposed between the feed rollers 5 and has a transmission LED 6 that is a light source disposed below the plate nori across the plate nori to be transported, and is transmitted from the transmission LED 6 and passes through the plate nori. It consists of a transmission camera 7 that receives infrared light. Infrared light that has passed through the plate seaweed can be received by the transmission camera to find foreign matter inside.

The top surface foreign matter detection device is composed of a top surface reflection LED 8 and a top surface reflection camera 9, and the bottom surface foreign matter detection device is composed of a bottom surface reflection LED 11 and a bottom surface reflection camera 10 . Each reflected light of the light irradiated to the upper surface and the lower surface of the plate nori from the oblique direction from each reflective LED 8, 11 is received by each camera 9, 10 . The reflected light is weak if there is no foreign object on the plate seaweed, but if there is a foreign object on the surface, the light is reflected and can be recognized by the cameras 9 and 10 . Each of the reflective LEDs 8 and 11 uses red, green and blue (R, G, B) LEDs, and the camera can recognize each color independently. The lighting of the LEDs is switched in order of red → green → blue... By this switching, it is possible to accurately acquire the presence / absence and size information of foreign matters of various shades.

  As shown in FIG. 2, the detection signal of each detection device of the foreign matter detection device 3 is input to the foreign matter information calculation device 12 of the foreign matter detection device 3, and information on the position and size of the foreign matter, and the laser irradiation device 4 is used as a foreign matter laser. The feed information for sending toward the irradiation position is calculated, and the calculation result is input to the feed control device 13 for sending the laser irradiation device 4 to the laser irradiation position of the foreign matter.

  In the foreign matter information calculation device 12 to which each detection signal of the foreign matter detection device 3 is input, the foreign matter is recognized, and dimension data that is information on the size of the foreign matter and X / Y coordinate data that is information on the position of the foreign matter are calculated. The

  Foreign matter information (size data, X / Y coordinate data) calculated by the foreign matter information calculation device 12 is transmitted to the laser irradiation device 4 and the feed control device 13 that controls the feed of the laser irradiation device 4.

  The laser irradiation device 4 is transferred from the foreign object detection device 3 to the conveyor 2b of the laser irradiation device 4 and stopped in the Y direction of the laver plate (conveying direction of the laver) and the X direction of the laver (direction orthogonal to the conveying direction). It is arranged to be movable.

  The laser irradiation device 4 is a position where an AC servo motor that moves in the X direction and an AC servo motor that moves in the Y direction are sent to the X and Y positions of the foreign matter by the feed control of the feed control device 13 and irradiate the laser beam. It stops and the laser beam is emitted toward the foreign object.

  The operation of the laser apparatus for removing foreign matter of the present invention having the above configuration will be described.

  The plate nori having foreign matter is carried into the foreign matter detection device 3 while being conveyed by the conveyor 2a. First, infrared light is irradiated from the transmission LED 6 below the plate nori in the internal foreign matter detection device, and the light transmitted through the plate nori is the plate nori. Is detected by a transmission camera 7 disposed on the upper side of the seaweed to detect foreign matter inside the laver. The detection signal is sent to the foreign matter information calculation device 12 to calculate foreign matter data (foreign matter size dimension data, foreign matter position X / Y coordinate data) of the internal foreign matter.

Next, the top surface foreign matter detection device comprising the top surface reflection LED 8 and the top surface reflection camera 9 detects foreign matter on the top surface of the plate seaweed, and the bottom surface foreign matter detection device comprising the bottom surface reflection LED 11 and the bottom surface reflection camera 10 Foreign matter on the lower surface is detected. The detection signal is sent to the foreign matter information calculation device 12, and foreign matter data (dimension data, X / Y coordinate data) and feed information for the top and bottom foreign matter are computed and sent to the feed control device 13.

  The plate seaweed from which the foreign matter is detected is transferred from the foreign matter detection device to the conveyor 2b of the laser irradiation device and stopped.

  The feed control device 13 determines the laser position of the laser irradiation device 4 based on the foreign matter data, and positions the laser irradiation device by feed control of an AC servo motor that moves in the X direction and an AC servo motor that moves in the Y direction. And stop.

  After stopping the laser irradiation device 4, the laser irradiation device 4 irradiates a laser beam to burn around the foreign material or the foreign material, so that only the foreign material is cut out and removed in a spot manner.

  As shown in FIG. 3, the foreign material of the plate seaweed can be removed by applying a laser beam toward the foreign material to burn out a 0.2 mm diameter hole according to the size of the foreign material. The size of the foreign matter adhering to the plate seaweed is as small as 0.5 mm and as large as 2 mm on average, so if you drill a hole with a minimum diameter of 1.0 mm and a maximum diameter of 2.5 mm with a laser beam Foreign matter can be removed. Even if it is originally a good plate nori, there are many plate nori with many small holes, so even if a hole with a diameter of about 2.5 mm is made, it can be used as a product. Depending on the size of the foreign matter, there is a foreign matter larger than 2 mm in diameter, and even if a large hole of 2 mm or more is drilled, the plate seaweed can be commercialized for various uses, such as stepping seaweed.

1: Laser device for foreign matter removal 2: Plate nori transport conveyor 2a: Carry-in conveyor 2b: Carry-out conveyor 3: Foreign matter detection device 4: Laser irradiation device 5: Feed roller 6: Transmission LED
7: Transparent camera
8: Top reflective LED
9: Upper surface reflection camera 10: Lower surface reflection camera 11: Lower surface reflection LED
12: Foreign matter information calculation device 13: Feed control device

Claims (1)

Conveyor for conveying plate nori having foreign matters on the inside and top and / or bottom of plate nori,
An internal foreign matter detection device that detects internal foreign matter inside the plate seaweed along the transport conveyor, an upper surface foreign matter detection device that detects top surface foreign matter attached to the top surface of the plate seaweed, and a bottom surface of the plate seaweed A foreign object detection device having a lower surface foreign object detection device for detecting a lower surface foreign object,
A laser irradiation device that removes the foreign matter by irradiating the foreign matter and the periphery of the foreign matter by irradiating a laser beam toward the foreign matter detected by the foreign matter detection device following the foreign matter detection device,
Dimension data that is information on the size of the foreign matter detected by the foreign matter detection device, XY coordinate data that is information on the position of the foreign matter, and feed information for sending the laser irradiation device toward the laser irradiation position of the foreign matter Foreign matter information calculation device to calculate,
A plate provided with a feed control device for controlling feed for sending the laser irradiation device to the laser irradiation position based on the dimension data, the X / Y coordinate data, and the feed information input from the foreign matter information calculation device Laser device for removing foreign matter from seaweed.