SU1124353A1 - Device for counting moving itmes - Google Patents

Abstract

DEVICE FOR ACCOUNT OF MOVING ITEMS, containing the first and second sensors, the outputs of which are connected to the first inputs of the first and second triggers, the output of the first of which is connected to the second input of the second trigger, the outputs of which are connected respectively to the input of the counter and to the first input of the element I, different . so that, in order to improve the accuracy of the device, an element NOT is entered into it, the output of the second sensor is connected to the second input of the element AND, the output of which through the element is NOT connected to the second input of the first trigger, the sensors are installed along the movement from one another is less than the length of the object and greater than the magnitude of the vibration of the object.

Description

This invention relates to an automatic operational control of production processes, in particular, piece goods, containers, blanks, and the like. on production line conveyors.

A device for counting objects moving in two opposite directions is known, comprising sensors connected to the inputs of the And elements, the outputs of which are connected to the inputs of the first and second triggers, the outputs of which are connected to other inputs of the elements And l.

However, this device cannot be used to count items with small gaps between them, since the device counts a group of such items as one item.

A device for reversing. Of a moving object is known, which contains sensors connected to the inputs of the first and second triggers, a counter, an element whose input is connected to the output of the second trigger 2.

The disadvantage of such a device is the passage of spurious signals when objects are moving at intervals smaller than the distance between the sensors.

Closest to the proposed technical entity is a device for counting piece objects containing photo sensors, the outputs of which are connected to the first inputs of the first and second triggers, a counter and an element And, to the inputs of which the output of the second trigger is connected, to another input of which the output of the first DPS trigger is connected .

A disadvantage of this device is the low accuracy of the counting of objects when they are moving with small gaps and with partial reversal, which reduces the accuracy of the device.

The aim of the invention is to improve the accuracy of the device.

This goal is achieved by the fact that a device for counting moving objects, containing first and second sensors, the outputs of which are connected to the first inputs of the first and second triggers, the output of the first of which is connected to the second input of the second trigger, the outputs of which are connected respectively to the counter input and first entrance

And, the element is NOT, the output of the second sensor is connected to the second input of the element I, whose output through the element is NOT connected to the second input of the first trigger, the sensors are mounted along the movement of objects at a distance from each other less than the length of the object and greater than the magnitude of the vibration of the object.

As sensors, any sensors with a discrete output can be used, for example, contact, photoelectric, inductive.

The drawing shows a functional diagram of the device.

The device consists of the first and second sensors 1 and 2, the first and second triggers 3 and 4, consisting, for example, of the elements AND-NE 3-1, 3-2, 4-1.4-2, element 5, the counter 6, the item is NOT 7.

In the initial state, in the absence of an object, at the outputs of sensors 1 and 2 is the signal zero, at the outputs of elements 3-1, 4-1 - signal one, elements 3-2, 4-2 signal zero.

When the object moves along the conveyor past the sensors, the signals at their outputs will change in the following sequence 00, 10, 11, 01, 00.

At first, sensor 1 triggers and the signal unit from its output prepares the first trigger 3 for operation, however, its state does not change yet. When sensor 2 is triggered and a unit appears at its output, trigger 4 is prepared at the inputs of element 5, two units appear and the signal from its output is triggered by trigger 3, the signal from the output of which overturns trigger 4. At the same time, unit is, and at the first input of the element And 5 - zero; the tilting signal from the second input of the trigger 3 is removed.

Upon further advancement of the object, sensor 1 is released, and trigger 3 returns to its original state, and trigger 4 remains inverted. When the sensor 2 is released, the trigger 4 also returns to its initial state, at the input of the counter

Claims (1)

DEVICE FOR ACCOUNTING MOVING OBJECTS, containing the first and second sensors, the outputs of which are connected to the first inputs of the first and second triggers, the output of the first of which is connected to the second input of the second trigger, the outputs of which are connected respectively to the counter input and to the first input of AND element, different, the fact that, in order to increase the accuracy of the device, the element NOT is inserted into it, the output of the second sensor is connected to the second input of the element And, the output of which through the element is NOT connected to the second input of the first trigger, 9 sensor and are installed in the direction of movement of objects at a distance from each other less than the length of the object and more than the magnitude of the vibration of the object. SU., „1124353