JPS61173423U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of this invention, Fig. 2 is a side view thereof, Fig. 3 is a signal waveform diagram for explaining the operation of the embodiment of this invention, and Fig. 4 is a diagram of a slab conveying line. A schematic diagram showing an example, and FIG. 5 is a schematic configuration diagram showing a conventional example. 1...Slab, 2...Roller table, 2a...
...Table roller, 2b...Drive motor required, 3...
...Heating furnace, 4... Pusher, 9a, 9b... Optical position detector, 10... Light emitter, 11a, 11
b... Light receiver, 13... Drive control device, 14...
Coincidence detection circuit, 15...Level detection circuit, 16...
...AND gate, 17...motor drive circuit.

Claims (1)

[Scope of utility model registration request] In a conveyance line control device configured to stop a conveyance object on a conveyance line with its center in the conveyance direction on a predetermined stop line of the conveyance line, the conveyor object is stopped at a symmetrical position opposite to the conveyance object on the conveyance line and across the stop line. a pair of optical position detectors that individually detect the leading and trailing end positions of the conveyed object, which are disposed in the transport object;
a drive control device that stops conveyance of the conveyed object when output signals from the optical position detectors are respectively supplied and the two coincide; the length between the outer ends of the pair of optical position detectors; A conveyance line control device characterized in that the length of the conveyed object is selected to be greater than or equal to the length of the conveyed object in the conveyance direction.