RU1793260C - Weigher with automatic change of measuring range - Google Patents

Abstract

Use: weight measuring equipment. SUMMARY OF THE INVENTION: a unit for registering a number of weighing containers, a unit 28 for comparing the number of weighing containers with a minimum set value, a unit 30 for comparing the number of weighing containers with a maximum set value, a unit for comparing the number of weighing containers with a unit 31 for comparing the number of weighing containers with a value of zero, block 32 of the combination number register, block 15 for storing search parameters. All entered blocks are connected to a common information exchange bus. 3 ill.

Description

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The invention relates to instrumentation and can be used in a weight-measuring technique for forming doses of a product with a weight that is closest or equal to a given dose weight, but not less than it. Such a product may be sweets, fruits, vegetables, small spare parts, etc.

A combination weighing batcher is known, comprising a vibration-type main feeder designed to distribute the flow of the metering product entering it evenly between weighing stations installed around or along it. Each weighing station contains a feed feeder, a storage hopper with a controlled unloading mechanism, a weighing hopper with a controlled unloading mechanism, a weight sensor. NC where the weighing hopper is fixed, the dispenser control unit.

Dosing accuracy to a large extent depends on the accuracy of weighing portions of the product. Therefore, in each weighing of the device, a controlled mechanism for installing a calibrated load and removing it for periodic calibration is introduced,

A combination weighing batching device is known comprising a dispenser of a flow of a dosed product between a group of controlled feeders, along which storage tanks with controlled mechanisms for their unloading are arranged sequentially, weighing tanks attached to weight sensors with controlled mechanisms for their unloading and calibration connected by a common bus information exchange, weight data input unit with outputs of weight sensors connected to its signal inputs, storing intermediate weight data sub-sums, search parameters of the index register, summation, comparison with qualification weight, decoding and search control, control units for unloading, calibration, loading and feeders, outputs connected respectively to the inputs of the control mechanism for unloading weighing containers, the mechanisms for their calibration, unloading mechanisms of storage tanks and feeders, controlling inputs to the first, second, third and fourth outputs of the dosing cycle control unit, and information inputs rows to the decoding unit further outputs which are connected to additional information input unit inputs weighted data, wherein the first, second,

the third control inputs of the weight data input unit, the control input of the search control unit and the control input of the decoding unit are connected respectively to the fifth, sixth, seventh, eighth and ninth outputs of the dosing cycle control unit, the first and second inputs of which are connected respectively to the control outputs of the unit input weight

data and search control unit,

The known device has a low dosing rate due to time losses associated with the high complexity of the search algorithm.

5 An object of the invention is to increase the dosage rate.

The goal is achieved by the fact that in the above set of features of the device entered block register numbers

0 weighing capacity, a unit for storing numbers of weighing containers with a minimum set value, a maximum set value and a zero value and a block for registering a combination number5, all entered blocks are connected to a common bus Information exchange, and a block for storing search parameters is executed with nodes for setting a minimum value, maximum value and zero value.

In FIG. 1 shows the mechanical part of the device; in FIG. 2 is a block diagram of a dispenser control system; in FIG. 3 - diagrams of signals at the inputs and outputs

5 units ... for controlling the dosing cycle.

The device comprises a dispenser 1 of the flow of the dosed product between a group of controlled feeders 2i ... 2K, under which

0 storage tanks 31 ... 3 with controlled mechanisms 41 ... 4k of their unloading At Sensors 51 ... 5k of weight, weighing tanks b1 ... 6k with controlled mechanisms of their unloading 7i ... 7K and calibration are fixed

5 81 ... 8k / Under weighing tanks b1 ... 6k there is a receiving tank 9, and under it there is an additional tank 10 with a controlled unloading mechanism 11. The outputs of the weight data input block 12 are connected to the signal outputs by a sensor 51 ... 5k connected to the weight of the weight storage unit for weight data 13, intermediate sub-sums 14, search parameters 15, index register 16, totalization 17, comparison with a given one dose weight 18, compared with qualified weight 19, decoding 20, and search control 21. Outputs of unload control units 22, calibration 23, load 24, and feeders 25

connected respectively to the control inputs of the mechanisms 7i.,. 7K for unloading the weighed containers 6i ... 6K, the mechanisms 81 ..8k for their calibration, the mechanisms 4i ... 4K: the unloading of the storage tanks 3i ... 3K and the mechanisms for unloading the feeders 2i. .2K. The control inputs of blocks 22, 23, 24 and 25 are connected respectively to the first, second, third and fourth outputs of the dosing cycle control unit 26. The formation inputs of the blocks 22, 23, 24, 25 are connected to additional outputs of the decoding unit 20, which are connected to the information inputs of the weight data input unit 12. The first, second and third control inputs of the input unit 12: output data, the control input of the search control unit 21 and the control input of the decoding board 20 are connected respectively to the fifth, seventh, eighth and ninth outputs of the control unit 26 dosing cycle. The first and second inputs of block 26 are connected respectively to the control outputs of the weight data input block 12 and the search control block 21. Block 27 of the register of the number of the weighing capacity, block 28 of storing the numbers of the weighing tanks, blocks 29 30, 31 of comparing the number of weighing tanks, respectively, with the minimum set value, maximum set value and zero value, and block 32 of the combination number register are connected to the common information bus

; th. Block 15 memorizing search 35

The parameters are executed with nodes for setting the minimum value, maximum value and zero value.

The entire dispenser as a whole is controlled by the dispensing cycle control unit 1.6. The dosing cycle includes a number of operations, some of which are performed simultaneously. The specific device numbers (VUs) that are involved in all these operations in a given dosing cycle are indicated by a decoding unit 20 having K auxiliary outputs, each of which corresponds to one of the K weighing devices contained in the dispenser. A logical signal at each of these | outputs indicates whether or not the corresponding VU will participate in these operations.

The control units for unloading 22, calibration 23, loading 24 and feeders 25 according to the signals from block 26 perform the corresponding operations for those slaves that are indicated by the code from the decoding unit 20 arriving at their information inputs.

The operation of block 26 is illustrated by the voltage plots at its inputs and outputs, shown in FIG. 3, with the arrival of the signal, the start block 26 generates a pulse at the output 9, which sets the decoder 20 to a state that allows the operation of all the slaves included in the dispenser. Then, at output 4, a signal appears, including feeders 2, and they start loading all storage tanks 3. Simultaneously with the start of loading, block 26 with a pulse at output 5 starts block 12 to calibrate three weighing tanks b, which do not contain product, and proceeds to analyze the signal at its first input, which generates a block 12 immediately after starting.

After block 12 completes the taring and removes the signal from input 1, block 26 generates at output 2 a signal for setting calibers on weighing tanks 6. Then, after a certain period of time necessary for the mechanical activation, it will work. MOV and their reassurance, block 26 with a signal at output 6 starts block 12 to perform calibration.

At the end of the calibration, block 26 picks up the signal from output 2 and the signal at output 3 passing through the load control unit 24 to the controlled mechanisms 4 for unloading the storage tanks 3, and load the weighing containers 6 into the product portions accumulated by them and then the output signal 7, the CKaet block 12 starts to perform the weighing operation, and the signal at the output 4 again turns on the feeders to load the capacitive st ..

At the end of the weighing operation, the block 26 with the signal at the output 8 starts the block 21 to perform the operation of searching for the best combination of weighing containers and proceeds to the analysis of the signal received at its input 2 from the block 21 issued by this block immediately after starting.

At the end of the search by the signal at the output 1, block 26 unloads the weighing containers indicated by the decoding unit 20, and then the dosing cycles are completely repeated, only the slave units included in the best combination in the previous dosing cycle are involved in all operations.

The invention allows dosing at high speed.

Claims (1)

SUMMARY OF THE INVENTION A Raman weight dosing device comprising a metering product flow distributor between a group of controlled feeders, under which storage tanks with controlled unloading mechanisms are arranged sequentially, weighing containers fixed to weight sensors with controlled unloading and calibration mechanisms, a receiving tank and an additional a tank with a controlled mechanism for its unloading, connected by a common bus for the exchange of information, a weight data input unit with a connected the outputs of the weight sensors, the blocks for storing the weight data, the intermediate subsums, the search parameters, the index register, the summation, the comparison with the preset dose weight, the comparison with the qualification weight, decoding and search control, the unloading, calibration, loading control units and feeders, outputs connected respectively to the control inputs of the mechanisms for unloading weighing containers, IR calibration mechanisms, unloading mechanisms for storage tanks and feeders, which are controlled th entrances - respectively, to the threshold, second, third and fourth the outputs of the dosing cycle control unit, and the information inputs to the additional outputs of the decoding unit, which are connected to the information inputs of the weight data input unit, the first, second and third inputs of the control of the weight data input unit, the control input of the search control unit and the control unit input decoding are connected respectively to the fifth, sixth, seventh, eighth and ninth outputs of the dosing cycle control unit, the first and second inputs of which are connected respectively to the control the outputs of the weight data input block and the search control flea, which requires that, in order to increase the dosing speed, a weighing tank number register block, a weighing tank number storage unit, weighing number comparison blocks are introduced into it containers with the Minimum set value, maximum set value and zero value and a register number combination block, all entered blocks are connected to a common information exchange bus, and the search parameter storage unit is made with task nodes no minimum value, maximum value, or zero value. FIG. 1 ftt / m0 / nejret / t Fig.Z