| 摘要 |
PURPOSE:To enable the detection and removal of an extraneous substance existing in long log, before log-bucking, by inspecting the outer peripheral part and the inside of the long log by X-rays and by conducting marking in the defective part thereof or in the vicinity of the defective part. CONSTITUTION:Long log L0 is brought in a first conveyer apparatus 10, and the apparatus 10 and a second conveyor apparatus 20 are operated under the control of CPU 46. When the conveyance proceeds and the log L0 reaches an X-ray emitting apparatus 42, and an X-ray pulse is projected in a sectorial shape in synchronization with the speed of conveyance of the log L0 by the apparatus 42. The intensity of the transmitted X-ray is measured by an image data collecting device 43, and an image of the log is re-formed and displayed in a display 47 through an image processor 45 and CPU 46. The CPU 46 compares the re-formed image with an image of a registered defect pattern, discriminates the quality of the woody parts, sends signals to a marking device 50, and makes the device execute marking on an outer peripheral part in the case when the position of a defect is in the outer peripheral part. When the position of the defect is located inside, marking is made on the nearest outer periphery in the direction of the diameter of the log. |
