SU982042A1 - Paper sheet counting device - Google Patents

Description

The invention relates to devices for counting and packing paper sheets, such as cash tickets, which were in circulation, intended for use in the institutions of the State Bank of the USSR and in various trade organizations and can also be used for counting and packing documents and other similar items.

A device for sorting and counting money tickets, containing a light emitter and a photo-receiver, a counting pulse amplifier, a single-oscillator, and a counter l.

The disadvantages of this device are possible errors in the account I in the case of overlapping tickets on one another or passing them through butt; lack of double control.

The closest in technical essence to the present invention is a sheet counting device comprising a friction roller for separating sheets and a biasable sounding roller interconnected with two pulse counters of the double sheets, a counter, a transporting organ, a stacking unit, a control trigger, and elements And elements OR t2j.

The disadvantages of this device are the lack of control of money tickets in length; the possibility of giving a false signal when passing the tickets butt. without spacing, as well as tickets with curved hems) possible jamming of the probe roller, which in general reduces the accuracy of the Device.

The purpose of the invention is to improve the accuracy of counting and packing the required number of paper sheets by checking the sheets along the length and eliminating errors in the bill when passing sheets with curved edges. I (The goal is achieved so that the device containing the first second sensors, elements And, element OR, control trigger and counter,

20 the element NOT, d 1Shfrator and pulse converter of movement of the critical node is inputted; the output of the first sensor is connected to the first input of the first element I and through the element

25 NOT with the first input of the counter, the outputs of which are connected to the inputs of the decoder, the first and second outputs of which are connected to the control trigger, whose output is connected

30 to the first input of the second element And,

the second input of which is connected to the output of the second sensor, the output of the impulse transducer of movement of the transporting node is connected to the second input of the first element AND / output of which is connected to the second input of the counter, the output of the second element AND is connected to the first input of the OR element, the second input of which is connected to the third output decoder,

In addition, the first and second sensors are installed on an axis perpendicular to the direction of movement of the paper: sheets.

A pulse transducer, moving the transport unit, for example, can be made in the form of a sequentially installed light source, a luminous flux modulator rigidly fixed on the shaft of the transport unit, and a photodetector

Fig, 1 shows the block diagram of the device; in fig. 2 schematically depicts a transporting assembly with sensors.

The device contains a transporting unit 1, a paper sheet 2, the first sensor 3, which fixes the presence of the sheet, the second sensor 4, which fixes the doubleness of the sheets, the source 5 of the light, the luminous flux modulator 6, the photodetector .7, the first element And 8, the counter 9 element HE 10 , decoder 11, trigger 12 controls, the second element And 13 and the element OR 14.

The device works in the following way.

At the moment when the leading edge of the paper sheet 2 approaches, the first sensor 3 generates a resolution signal at the counter, which is fed to one of the inputs of the first element 8, to the other input of which, when the modulator b rotates the light flux, a sequence of pulses arrives element 8 is received only while the paper sheet 2 is in the counting zone, and the number of counted pulses is directly proportional to the length of the sheet. From the output of the first element And 8, the pulses arrive at the input of the counter 9. In the absence of a paper sheet 2 in the counting area, the counter 9 is set to the zero position by means of the element NOT 10. The number of pulses received at counter 9 is converted by the decoder 11 into a positional code. The decoder 11 converts the number of counts counted by the counter 9 pulses into a signal that appears in one of. its m outputs, while the output number of the decoder 11, on which the signal appears, corresponds to the number of pulses, counted by the counter 9. When the size of the paper sheet 2 is exceeded in length, i.e. with the passage of sheets transported

Overlap or end to end without spacing. (so-called long sheets), at the output m of the decoder 11, a blocking signal appears, arriving at the input element OR 14.

When the double sheets are stuck in the counting zone, the second sensor 4 generates a corresponding signal, which is fed to one of the inputs of the second element. And 13 only in the presence of a enable signal at the output of the trigger 12 controls. In addition, during the reversal process, the edges of the paper sheets are diluted; tears and kinks appear on them that can cause the appearance of a false dual signal, therefore the control trigger 12 generates a permission signal for dual control only at the moment the signal appears at the output n of the decoder 11 And the appearance of the signal at the output of the decoder 11 occurs at the moment when the leading edge of sheet 2, which may have the defects listed, is already out of the zone, of the count. Here, the distance between the leading edge and the line, with which the dualism control is allowed, is directly proportional to the number n of pulses. After counting pulses by the counter 9 (m-n), the paper sheet 2 is still in the counting zone and its rear edge did not reach the second sensor 4. At this moment, the output from the output (tn) of the decoder 11 returns to. the initial state trigger trigger 12, which blocks the appearance of a double signal at the output of the second element And 13, Thus, the occurrence of a false double signal from accidentally folded or broken edges of the sheet is prevented.

The proposed device makes it possible to increase the measurement accuracy by detecting slip-and-so-called "x long sheets, i.e., sheets, overlapping or butt-end without spacing, and at the same time eliminate the appearance of spurious signals when sheets are bent by edges.

Claims (2)

Invention Formula 1, A device for counting paper sheets containing the first and second sensors, the AND elements, the OR element, the control trigger and the counter: in order to improve the accuracy of the device, the NOT element, the decoder and the pulse are introduced into it. displacement transducer of the transporting unit; the output of the first sensor is connected to the first input of the first element AND and through the element NOT to the first input of the counter, the outputs of which are connected to the inputs of the decoder, the first and second outputs of which are connected to the inputs of the control trigger, the output of which is connected to the first input of the second element I, the second input of which is connected to the output of the second sensor, the output of the pulse converter for moving the transporting node is connected to the second input of the first element I, the output of which is connected to the second input of the counter, the output of the second element I connected to the first input of the element OR,: the second input of which is connected to the third output of the decoder. 2. Device n.i; This means that the first and second sensors are mounted on an axis perpendicular to the direction of movement of the paper sheets. Sources of information taken into account in the examination 1. Author's certificate of the USSR 720442, cl. G 06 M 9/02, 1978. 2. The patent of Germany 2430995, cl. G On M 7/06, 1974 (prototype).