JPS5912023U - Span adjustment device for weighing conveyor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a weighing conveyor incorporating a conventional span adjustment device, FIG. 2 is a schematic diagram of a span adjustment device according to this invention, and FIG. 3 is a block diagram of a part of the same span adjustment device. DESCRIPTION OF SYMBOLS 1... Conveyor, 2... Load detector, 3... Pulse generator, 4... Accumulator, 8... Sust chain,
10... Span value storage device, 12... Span adjuster,
16...Correction calculator, 24.26...Counter, 3
8... Length setter, 40... Arithmetic unit, 42... Multiplier, 44... Reference mass setter. Correction 1984. 8.27 The claims for utility model registration and the brief description of the drawings are amended as follows. O Utility Model Registration Claims The output of a load detector that detects the conveyed mass per unit traveling distance of the conveyor is accumulated based on a pulse signal generated by a pulse generator every time the conveyor travels the above unit traveling distance. In the weighing conveyor for obtaining the conveyed amount, a span adjuster divides or subtracts the output of the load detector or accumulator from the span value, and a predetermined reference mass m is applied to the conveyor per unit traveling distance. A test chain provided so as to be connected to the surface of the conveyor, a reference mark that is provided along the length of the conveyor and is shorter than the overall length of the conveyor, and mark detection that detects both ends of the reference mark, respectively. a counter for counting the number p of pulse signals generated by the pulse generator between when the mark detector detects one end of the reference mark and when the other end of the reference mark is detected; and the mark detector. a counter for counting the number of pulse signals P generated by the pulse generator from the time the pulse generator detects either end of the reference mark until the same end is detected again; and the length of the reference mark. a setting device that sets l, a setting device that sets the reference mass m, a calculation section that calculates the reference span value by calculating P - t - m / p, and the output of the reference span value and the accumulator. and a correction calculator that calculates the span value by dividing or subtracting the above span value. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a weighing conveyor incorporating a conventional span adjustment device, FIG. 2 is a schematic diagram of a first embodiment of the span adjustment device according to this invention, and FIG. FIG. 4 is a block diagram of a portion of the second embodiment. 1...Conveyor, 2...Load detector,
3...Pulse generator, 4...Accumulator,
8... Sust chain, 10... Span value storage device, 12... Span adjuster, 16...
...Correction calculator, 24.26...Counter, 38...Length setter, 40...Calculation section, 42...Multiplier , 44...Reference mass setting device.

Claims (1)

[Scope of utility model registration request] In a weighing conveyor that obtains the conveyed amount by accumulating the output of a load detector that detects the conveyed mass per unit traveling distance of the conveyor based on a pulse signal generated by a pulse generator every time the conveyor travels the above unit traveling distance. , a span adjuster that divides or subtracts the output of the load detector or accumulator from the span value, and a test chain provided so that a predetermined reference mass m is applied to the conveyor per unit traveling distance. and a reference mark that is provided along the length of the conveyor surface and is shorter than the total length of the conveyor, a mark detector that detects both ends of the reference mark, and the mark detector. a counter for counting the number of pulse signals p generated by the pulse generator from when the pulse generator detects one end of the reference mark until it detects the other end of the reference mark; A counter that counts the number of pulse signals P generated by the pulse generator between detecting one end and detecting the same end again, and a setting that sets the length C of the reference mark. a setting device that sets the reference mass m, a calculation unit that calculates the reference span value by calculating PJ-rn/p, and a calculation unit that divides or subtracts the reference span value and the output of the accumulator. A span adjustment device for a weighing conveyor, comprising a correction calculator for calculating the above-mentioned span value.