Abstract: To provide a resistance measuring device not requiring a long time for the resistance measurement work of a tire and maintaining the accuracy of measurement to assure the electrical conductivity characteristics of the tire and a method thereof. An electrical resistance measuring device for tires 10 comprises first and second probes 2, 3 for measuring an electrical resistance value of a tire 5, wherein the first probes 2 abut on a plurality of portions in an outer peripheral surface of a tread part 6 and the second probe 3 abuts on a periphery of a center part of a tire 5, and thereby an electrical resistance value between the tread part 6 and the bead part 9 is measured.

Abstract: To provide a resistance measuring device not requiring a long time for the resistance measurement work of a tire and maintaining the accuracy of measurement to assure the electrical conductivity characteristics of the tire and a method thereof. An electrical resistance measuring device for tires 10 comprises first and second probes 2, 3 for measuring an electrical resistance value of a tire 5, wherein the first probes 2 abut on a plurality of portions in an outer peripheral surface of a tread part 6 and the second probe 3 abuts on a periphery of a center part of a tire 5, and thereby an electrical resistance value between the tread part 6 and the bead part 9 is measured.

Abstract: An X-ray tire inspection apparatus comprising X-ray tubes 2a and 2b for applying an X-ray to a tire 10, installed right above the opposite ends of the tire 10 conveyed by a roll conveyor 1, and X-ray line sensors 4a and 4b arranged in the space between adjacent rolls 1R and 1R below the above roll conveyor 1 at positions corresponding to the above X-ray tubes 2a and 2b, respectively, wherein transmission X-ray images of left half and right half portions of the tire 10 are taken by the X-ray line sensors 4a and 4b and combined by tire internal image inspection means 5 to obtain a transmission X-ray composite image of the whole tire 10. Therefore, even a tire having a low aspect ratio can be internally inspected accurately and efficiently.

Abstract: A measurement value output device including measuring unit such as current measuring unit (11) for metering an AC current running through the power line (2) of a motor (1), a detection circuit (12) for detecting the above measurement value by amplifying the above measured current value, a signal converting unit (13) for converting the detected measurement value into a time interval (duration) and an ON/OFF signal output unit (14) for outputting an ON/OFF signal which is kept ON or OFF for the above time interval at predetermined time intervals and outputs the measurement value such as the motor current of a production line used to monitor a measurement value at predetermined time intervals as a pulse signal (digital signal) having a pulse width corresponding to the above measurement value at predetermined time intervals.

Abstract: An X-ray tire inspection apparatus comprising X-ray tubes 2a and 2b for applying an X-ray to a tire 10, installed right above the opposite ends of the tire 10 conveyed by a roll conveyor 1, and X-ray line sensors 4a and 4b arranged in the space between adjacent rolls 1R and 1R below the above roll conveyor 1 at positions corresponding to the above X-ray tubes 2a and 2b, respectively, wherein transmission X-ray images of left half and right half portions of the tire 10 are taken by the X-ray line sensors 4a and 4b and combined by tire internal image inspection means 5 to obtain a transmission X-ray composite image of the whole tire 10. Therefore, even a tire having a low aspect ratio can be internally inspected accurately and efficiently.

Abstract: A measurement value output device comprising measuring means such as current measuring means 1 for metering an AC current running through the power line 2 of a motor 1, a detection circuit 12 for detecting the above measurement value by amplifying the above measured current value, a signal converting unit 13 for converting the detected measurement value into a time interval (duration) and an ON/OFF signal output unit 14 for outputting an ON/OFF signal which is kept ON or OFF for the above time interval at predetermined time intervals and outputs the measurement value such as the motor current of a production line used to monitor a measurement value at predetermined time intervals as a pulse signal (digital signal) having a pulse width corresponding to the above measurement value at predetermined time intervals.

Abstract: The present invention discloses a tire chuck apparatus for holding a tire having a tire bead. The apparatus comprises: a gripping mechanism with at least two gripping members movable in tire radial direction from a retracted position to an extended position for pressing against the inner side of the bead portion of the tire, thereby holding the tire; gripping rollers as the gripping members adapted to be rotatable around an axis substantially parallel to a central axis of the tire; and a rotation drive mechanism for rotating the tire around the central axis of the tire. According to this apparatus, even if the center of the tire and the center of the chuck are out of alignment with each other, by rotating the gripping rollers so as to rotate the tire, the tire is shifted so that the center thereof is aligned with the center of the chuck apparatus, thus reducing mispositioning.

Abstract: A tire interior inspecting method irradiates a tire being continuously conveyed by a conveyor with x-rays emitted from a predetermined position, receives the x-rays penetrated through the tire by a high resolution linear x-ray sensor to obtain x-ray information about the tire, compares the x-ray information with normal tire image information about the metallic components of a normal tire, removes parts of the x-ray image information coinciding with the normal tire image information, and decides the quality of interior of the tire on the basis of image information obtained by removing parts of the x-ray image information coinciding with the normal timer image information.