SU1566221A1 - Large=weight automatic balance - Google Patents

Abstract

The invention relates to a technique for the accurate measurement of mass, for example, when controlling the mass of piece goods in production lines. The purpose of the invention is to improve the measurement accuracy. In the absence of the measured product 31 on the conveyor 24, the latter is started by the electric motor 25 and the initial adjustment of the initial position of the measuring lever 13 is made. of the measured product 31, it advances to the left and crosses the path of the load detectors, namely, the photodetector 29, turns on its driver 42 and starts the clock generator pulses 41, which, by the start signal, sends a command to memory 37 to receive information from analog-digital converter 36 and transmit it to counter drive 38. As the product 31 passes through the conveyor 24, the clock pulse 41 generates gating pulses "polling" the storage device 37 and transmitting the measured data on the mass value of the M _IX to the drive counter 38. After the item 31 enters the light path of the end photodetector 30 from the driver 43 to the clock generator 41, a command is issued The divider 39 divides the sum ΣM _{IX of the} received mass units M _X by the number N of strobe pulses, and the average measurement result M _{X cf is} displayed on the reading device 44. 1 il.

Description

The invention relates to a technique for the accurate measurement of mass, namely, to the section for measuring increased loads, for example, while controlling the mass of piece goods in production line flows.

Measured article 31 is mounted on a moving conveyor 24, for example, manually or with a manipulator and passes successively the entire length.

The purpose of the invention is to improve the measurement accuracy.

The drawing shows the proposed scales.

The heavy automatic scales jc ln of the load receiving platform 8 intersect consist of the base 1, on which with the help of elastic plates 2 and 3 the load receiving levers 4 and 5 are installed, communicating through the corresponding light paths of the photoreceivers 29 and 30.

The 4G 8 output signal of the unbalance sensor 15 is supplied to the amplifier 32, from where it is converted through the reference resistor 33 after conversion, and the current inputs 34 form the compensation current IK to the coil 17 of the magnetoelectric compensator 18, creating a power balance of the system of levers 4, 5 and 13.

elastic hinges 6 on one side with 7 angular 7 load-bearing platforms 8, and on the other hand through additional elastic tapes 9 and 10, straightening 11 and 12 with measuring lever 13 fixed on the base 1 s using ribbons 14 and equipped with an electrically balanced system, including an unbalance sensor 15 with a flag 16 and a coil 17 of a magnetoelectric com- pactor 18.

Cargo intake levers 4 and 5 are equipped with a gear device 19 with a spring 20 and regulators 21 lengths

shoulders

The cargo-receiving platform 8, which is made with a length of 1M, is installed on angular traction gi 7 with the help of bushings 22 and is equipped with supports 23, on

which is fixed to the conveyor 24, driven by the motor 25, and racks 26 and 27, which are equipped with indicators of the presence of cargo, which are illuminators 28 and photodetectors 29 and 30.

Measured article 31 is mounted on a moving conveyor 24, for example, manually or with a manipulator and passes successively the entire length.

ln load area 8, crossing

ka light paths of photodetectors 29 and 30.

The 4G 8 output signal of the unbalance sensor 15 is supplied to the amplifier 32, from where it is converted through the reference resistor 33 after conversion, and the current inputs 34 form the compensation current IK to the coil 17 of the magnetoelectric compensator 18, creating a power balance of the system of levers 4, 5 and 13.

The averaging unit 35 is made in the form of an analog-digital converter 36 connected to the reference resistor 33 and to the input of the storage device 37, the storage counter 38, the divider 39, the inhibit cells 40, the clock pulse generator 41 controlled through the imagers 42 and 43 of the photoreceivers 29 and 30, and the reading device 44.

The device works as follows.

51

In the absence of the measured product 31 on the transponder 24, the latter is started with the help of the electric motor 25 and the initial position of the measuring lever 13 is initialized with the help of the HE of the calibration device 19, in which the output signal dUex of the imbalance sensor 15 is zero.

The readings are monitored by the counting device 44, into which the analog-digital converter 36 reads through the memory 37.

Next, a measured article 31 is installed on the conveyor 24, which, after passing through the initial part of the conveyor 24, during which time the transition process occurs, goes to the left and, crossing the light path of the photodetector 29, turns on its driver 42 and starts the clock pulse generator 41, which, on the Start signal, commands the memory device 37 to receive information from the analog-digital converter 36 and transfer it to the storage drive 38. As the product 31 passes through the transport pv 24 clock pulse generator 41 produces gating pulses for interrogating memory device 37 and corresponding transmission of measured data about

bullet 38.

When the product 31 enters the light path of the end photodetector 30 from the imaging unit 43, a reset command is given to the clock pulse generator 41, using which the divider 39

6

eliminates the division of the sum Zm | y of the unit mass units mj by the number N of gating pulses:

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„2.5J5.

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Cf j,

At the reading device 44, the averaged measurement result of ha „c.

In the event that when the imaging unit 43 is triggered, the analog-digital converter 36 has not completed the processing of information and its readings are significantly different from the previous value recorded in the storage device 37, the prohibition cell 40 does not allow information to be fed to the accumulator 38, and it not included in the measurement result.

20

five

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five

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Claims (1)

Invention Formula Heavy-duty automatic scales containing a base on which two load-receiving levers are mounted on elastic plates connected through appropriate elastic hinges and links to the receiving platform and through additional elastic tapes to a measuring lever connected to an electropower balancing system including an unbalance sensor, compensator and indicator, characterized in that, in order to improve the measurement accuracy, they are equipped with a conveyor mounted on the load-receiving platform, two warning devices and lychee cargo fixed at the beginning and end of the conveyor, and the averaging unit connected to the output electric power system to equilibrate, and the presence Warning load and associated with the indicator.