JPS62200246A - Surface inspection and conveyance inspector for roofing tile product - Google Patents

Abstract

PURPOSE:To achieve total automation and labor saving, by a method wherein roofing tile products being conveyed with the surface thereof horizontally upward at a fixed interval on a transportation conveyor are imaged by TV cameras and the images thereof are processed with a computer to determine continuously whether the products pass an inspection or not. CONSTITUTION:Light sources 6 and 6a and TV cameras 7 and 7a are set parallel with the roofing tile products 2 being conveyed with the surface thereof upward horizontally at a fixed interval on a transportation conveyer 1 as viewed behind in the ongoing direction thereof and in an elevation range of 10-80 from a position above the transportation conveyor and the roofing tile 2 are imaged by the TV cameras 7 and 7a. Then, the images are processed with a computer and the results are compared with a reference to determine the acceptance thereof. A signal is outputted indicating a reject and a rejected product is taken out by a reject take off unit 8 set successively.

Description

[Detailed Description of the Invention] [Object of the Invention] The present invention is directed to a tile product in which, after firing during the tile manufacturing process, the upper surface of the tile product is facing upward and horizontally (during land transportation, a television camera and a defective product removal device are installed). The present invention relates to a surface inspection method for tile products and a conveyance inspection device in which the tile products being installed and being transported are continuously judged to pass or fail the inspection, and defective tile products are taken out.

Conventionally, tile manufacturing plants have a firing process in their process, so in order to perform firing efficiently, it is common to use a continuous VE firing furnace (tunnel kiln). Therefore, it would be better to operate other equipment under the same conditions as the firing furnace in order to improve the efficiency of the process.

Due to the above reasons, it is currently the most efficient power.

It is normal for a fully automatic tile product manufacturing plant to operate continuously 24 hours a day, with day and night shifts. Even though there is already no automation for distortion in inspection, the reality is that automation has not yet been realized for surface inspection and we have no choice but to rely on visual inspection by humans. Ta.

However, this not only requires people to be kept in constant inspection positions for this purpose, but also visually inspects 40 to 50 tile products per minute and picks out defective products. (In practice, it is necessary to stop the entire line.) This is a painful operation, especially at night, and has the drawback of requiring dedicated personnel for surface inspection.

i negative man karno so λ; goods-,, ni-u, -4-ni 2
This invention: Sticking, which is a surface defect of tile products [occurs when the glazed surface of the tile product comes into contact with other tile products or refractories during the firing process, and causes peeling of the glaze surface or Refers to the exposure of the fabric. ], pinholes (due to pinhole-like glazing mistakes due to the condition of the base at the time of glazing, or organic matter (wood grains, lignite, etc.) mixed into the raw clay), and these may occur during firing. This refers to a pinhole-like defect caused by burnout. ], Poor glazing [Mechanical or human error during glazing, resulting in the glaze not being applied to the necessary areas and exposing the fabric. ], glaze flaking [refers to glaze falling off due to insufficient drying of the base material, failure of the glue in the glaze components, or mechanical failure during transportation. ] Focusing on the fact that all defects in tile products can be identified through optical inspection, we photographed the tile product with a television camera, processed the image using a computer, and stored it in advance in the computer to create an image of a non-defective product. The present invention provides a method for inspecting the surface of tile products and a conveyance inspection device in which the inspection is performed in comparison with the tile products.

1 Structure of the Invention] In view of the above, the present invention provides a means for transmitting tile products horizontally at regular intervals on a return conveyor facing the life direction from the rear in the direction of travel. parallel to the tile product and at an elevation angle of 10 from the conveyor conveyor.
A light source and a television camera are installed in the range of 80 degrees to 80 degrees, and the image of the tile product taken by the television camera is processed by a combination machine, and the quality is determined by comparison with the standard. A surface inspection method for tile products in which a signal is issued and a defective product removal device installed subsequently is used to take out the product, and a defective product removal conveyor is installed in series in a direction perpendicular to the conveyor, and the defective product is removed. The conveyor is equipped with an upright receiver with a fork-shaped support rod that is driven in circulation to receive defective products, and each reception is performed according to the type of defective product detected by the television and camera above. The above-mentioned drawbacks have been solved by providing a transportation inspection device for tile products, which operates a defective product take-out conveyor for each pitch at the time when the defective products are sent to the general delivery section, and sorts and transfers the tile products according to the type of defective products. The present invention aims to solve this problem by installing a television camera and a device for removing defective products during the upward horizontal transportation of the tile products after firing during the tile manufacturing process, so that the tile products can be continuously transported. A method and general method for surface inspection of tile products, which frees up personnel for surface inspection by determining pass/fail of inspection and removing defective products, and eliminates line stoppages due to continuous flow of defective products. This is a transport inspection device.

1. An embodiment of the present invention will be described below based on the drawings. (2) is a conveyor made of round healds, etc. The conveyor 1 is connected to a pulley 4 by a drive motor 3, and an inspection device via a (The controller is driven in the direction of one side and one side),
1) A light source 6.6a and a television are installed parallel to the tile products 2 and at an elevation angle of 10 degrees to 80 degrees from the first conveyor 1 at the rear in the direction of movement of the conveyor 1. A camera 7.7a is installed.

Reference numeral 8 denotes II''! The receiver of the conveyor 1 is a defective product removal device that is connected orthogonally to the transfer position 9, and the upper end of the frame 9 and IO of the defective product removal device 8 is connected to the operating shaft 11. , Ha, and sprockets 12.12a, 13.13.l and chains [4, 14a] are wound around the operating shafts 11 and Ha.

For this purpose, one operating shaft 11 is connected to a drive section 15 so that the chain [4, 14a] is driven in circulation from the transfer position 9 side to the other end side.

Also, chain 14! , 4a have support frames 1G, 1
Attach the upright receivers 17.17.1... which are formed by protruding and recessing the 6a... into a fork shape, and then attach the support frame 16.16.
The tile products 2 are distributed and received from the support frames L6a and 16b to the left and right sides.

Also, place the circulation orbit of support frame 16, +68.16b at transfer position 9.
! L! On the other hand, on the conveyor container ＼A 1, the support frame 6.16a, 1 is placed from the transfer position 9 to the terminal end.
6b at predetermined intervals so as not to interfere with the rotating shaft 18.
．． 18a..., and the rotating shaft 18.
18a...corresponding to the transfer path of the tile product 2 by the conveyor l, transfer I'J-Lar I9, L9a...
, each rotating wheel 18, 18... is connected to the drive unit 15 by a chain 20, and the j'A roller 19.
19a... are configured to rotate ζII in the conveying direction of the tile product 2.

Reference numeral 21 denotes a light power bar located in front of the defective product removal device 8 and in the conveyance path of the general conveyor 1.

Next, the method for inspecting tile products according to the present invention will be described. The tile products 2 being conveyed on the conveyor 1 at regular intervals horizontally in the surface-to-back direction are inspected for surface defects in the tile products 2 using a television camera 7.7a. A photo of a particular bulrush, a hinhole, a snake, etc. is taken, and the image converter processes the L image, and then compares it with a standard (image processing data of non-defective products) to judge whether it is good or bad, and sends a signal if it is a defective product. After closing, the subsequently installed receiver allows the defective product removal device 8 at the transfer position 9 to remove the defective tile products 2.

〔Effect of the invention〕

In short, the present invention allows the tile products 2 to be transported horizontally upward on the transport conveyor 1 at regular intervals, from behind in the direction of travel, parallel to the tile products 2, and at an elevation angle of 10 degrees from 171 above the transport conveyor. Optical fi6.6a and TV in the range of ~80 degrees
A camera 7.7a is installed, and the television camera 7.7
The image of the roof tile 2 is photographed by a, the image is processed by a computer, and the quality is judged by comparing it with a standard.If the product is defective, a signal is issued, and a defective product removal device 8 installed subsequently Since the surface of the tile product 2 to be inspected is a glazed surface, the glaze has the following properties: I: It becomes glassy after firing, so it has a very strong specular reflectance. , images taken with a light source from a direction where specular reflection exists cannot be used as data for image processing, and the glazed surface of the tile product 2 has a complicated curved shape, so images taken with a television camera 7.7a are not used. However, according to the present invention, a TV camera 7 is placed parallel to the tile product 2 from behind in the direction of movement of the tile product 2 and at an elevation angle of 10 degrees to 80 degrees above the conveyor 1.
．． By installing 7a, it is easy to photograph tiles that have a complex curved shape and reflectance due to specular reflection on the surface of tiles that have been treated with a glaze that becomes glassy after firing. This made it possible to distinguish by optical inspection.

If the light-shielding cover 21 is installed in the conveyance inspection apparatus according to the present invention, light sources other than the light source from the direction indicated by arrow A in FIG. It is possible to prevent the presence of ambient light other than the light source, which eliminates the need for inspection work, which conventionally required constant manual work in fully automated tile product manufacturing plants, and enables continuous delivery of 1+1+ tile products. Approximately 6 pieces of the inspection alloy are tested and the defective tile products are automatically taken out, which eliminates line stoppages due to a continuous flow of defective products and enables full automation. Its practical effects are enormous, including the ability to contribute significantly to labor savings.

[Brief explanation of drawings]

The figures show one embodiment of the present invention.
FIG. 2 is a plan view of the inspection device according to the present invention, FIG. 2 is a front view of the transfer position, FIG. 3 is a front view showing an outline of the inspection method according to the present invention, and FIG. 4 is a photographing direction. It is a diagram. l Conveyor Con-A 2 Tile products 6.6a Light source 7.7a TV/camera 8 Defective product removal device 9 Receiver is transfer position
21 blackout cover or higher

Claims (2)

[Claims] (1) A light source, a television camera, and a camera are placed parallel to the tile products from behind in the direction of travel, and at an elevation angle of 10 degrees to 80 degrees from the conveyor. The tile product is photographed using the television camera, the image is processed by a computer, and the quality is determined by comparison with the standard.If the product is defective, a signal is issued, and the defective product is taken out for subsequent installation. A method for inspecting the surface of a tile product, characterized in that it is taken out by a device. (2) A light source and a television camera are installed from behind in the moving direction of the conveyor that transports the tile products in an upward horizontal direction, parallel to the tile products and at an elevation angle of 10 degrees to 80 degrees from the conveyor. In addition, a defective product removal conveyor is installed in a direction perpendicular to the conveyor.
The defective product take-out conveyor is equipped with an upright receiver having a fork-shaped support rod that is driven in circulation to receive defective products, and is adapted to correspond to the type of defective products detected by the television and camera above. A conveyance inspection device for tile products, characterized in that when a defective product is conveyed to each receiving part, a defective product take-out conveyor is operated every pitch, and the tile products are sorted and transferred according to the type of defective product.