SU868791A1

SU868791A1 - Typewriter testing device

Info

Publication number: SU868791A1
Application number: SU792871584A
Authority: SU
Inventors: Олег Борисович Ширшов; Александр Алексеевич Самошин
Original assignee: Пензенский Филиал Центрального Проектно-Конструкторского Бюро Механизации И Автоматизации
Priority date: 1979-12-25
Filing date: 1979-12-25
Publication date: 1981-09-30

Description

(54) УСТРОЙСТВО ДЛЯ КОНТРОЛЯ ПИШУЩИХ МАШИН(54) DEVICE FOR THE CONTROL OF FILING MACHINES

ii

Изобретение относитс к испытательгнь1М стендам И машинам и может ть использовано в стендах дл контрол и при% работки, как пишущих машин в целом (Jieктрических и незлектрических), так и пе чатакоцих механизмов в отдельности.The invention relates to test stands and machines and can be used in test benches for controlling and performing% processing of both typewriters as a whole (Jie and non-electric) and press mechanisms separately.

Известно устройство дл контрол печатающих механизмов, содержащее фотоэлектрический датчик, логические элементы И, ИЛИ в компаратор .A device for controlling printing mechanisms is known, comprising a photoelectric sensor, logic gates AND, OR to a comparator.

Известно устройство, содержащее фотоэлектрический датчик, соединенный со Екодом венттш , логический элемент И, подключеншлй через инвертор к одному из входов логического элемента ИЛИ, и счетчик 21,A device is known that contains a photoelectric sensor connected to the code of the vent, the logical element AND connected via an inverter to one of the inputs of the logical element OR, and the counter 21,

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Недостатком данных устройств вл етс невозможность контрол положени литервых рычагов в случае их задержки пр« со шсоеновении с бумагоопориым валиком печатающего механизма и, следователыю, i недоегаточна достоверность контрол работы последнего.The disadvantage of these devices is the inability to control the position of the levers in case of their delay in connection with the paper roller of the printing mechanism and, consequently, i lack the reliability of the control of the latter.

Наиболее близким к предлагаемому вл етс устройство дл контрол печатающих механизмов, содержащее фотоэлектрический датчик, соединенный со входом вентил , логический элемент И, подключенный через инвертор к одному из входов логическотч) элемента ИЛИ, счетчик, аадержАнныВ муш тивибратор и кс 4паратор , причем вход счетчика соединен о выходом вентил и ыюаом задержанного му10 льтив1 ратора. подключенного к входу кс «паратора, второй вход которого соединен с ыдходом фотоэлектрического аатчика, первый выход кгаи паратора попкшочен к аругаму входу логического е вIS мента ИЛИ, а второй его выход и шдход счетчика соединены со входами логического элемента И 3 ..The closest to the present invention is a device for controlling printing mechanisms, containing a photoelectric sensor connected to the input of the valve, a logical element AND connected through an inverter to one of the inputs of the logical OR element, a counter, an Amplifier MUS and an RC 4parator, and the input of the counter is connected About the exit of the valve and the detainee of the detainee 10 litiv1 rator. the parator connected to the input kc ", the second input of which is connected to the output of the photoelectric sensor, the first output of the parator is connected to the input of the logical input OR, and its second output and output of the counter are connected to the inputs of the logical element I 3 ..

Claims

The disadvantage of the operation of this device is the absence of a reset of the counter after each impact on the printer. . a mechanism that requires the presence of an operator making the device return to the HcjtQAHoe state (by dropping the i. 8 counter) after each action on the printing mechanism, otherwise the operation of the device due to an incorrect state of the counter is disrupted. In addition, when jamming the printing mechanism, the lettered lever may not cross the beam to the photo sensor, the Delay commands will not arrive and the run-in stand will not turn off. In addition, the disadvantage of the device is its comparative complexity. The purpose of the invention is to increase the reliability of control and simplify devices. This goal is achieved by the fact that a pulse shaper is inputted into a known device containing a photoelectric sensor connected in series, a valve and a trigger, and an element, and whose input | connected to the input of the element is NOT and is the input of the device, and the output is to another input of the trigger, the output of which is the output of the device, the output of the element is NOT connected to the control input of the valve. Fig, 1 shows a functional diagram of the device; in fig. 2 - time diagram of the device. Device for feeding machines, containing photoelectric sensor 1, valve 2 trigger 3, element NO 4, driver 5 pulses. The device works as follows. The output of flip-flop 3 is used to block the output of the generator of clock pulses of the running-in machine stand. When the device is turned on, the trigger 3 takes on a single state, the first pulse from the clock pulse output comes out, affecting a certain key of the typewriter. The pulse former 5 generates a short pulse on the falling edge, which throws trigger 3 into the zero state, which closes the generator output. When moving to the platen shaft, the lit lever crosses the light beam going to the photoelectric sensor 1, the signal from which does not pass through the valve 2, since the element NOT 4 (the inverter) prevents the pulse from the photoelectric sensor 1 from passing through, because the lettered lever It is only during the pulse from the generator. Thus, the first signal from the photoelectric sensor does not affect the operation of the device. After termination of the pulse from the generator, the lettered lever, returning, again crosses the light beam going to the photoelectric sensor, the pulse of which passes through the open valve 2 (because the output of the generator goes to zero, which in the element HE 4 is converted to one and opens the entrance ) and erects trip 3 in one state, the output level from trigger 3 opens the generator output, from which the next pulse goes and everything repeats. In the case of non-return of the lettered lever, trigger 3 will not be erected and the next effect on the printing mechanism will not occur. The technical and economic effect of the present invention is to increase the reliability of the control while simplifying the device. An apparatus for controlling typewriters, comprising a series-connected photoelectric sensor, a valve and a trigger, and an NO element, characterized in that, in order to increase the reliability of monitoring and simplifying the device, it contains a pulse driver, the input of which is connected to the input of the element and is the input of the device, and the output is to another input of the trigger, the output of which is the output of the device, the output of the socket is NOT connected to the control input of the valve. Sources of information taken into account during the examination 1.Adasko V.I. and others. I / O devices of modern computers. M., Energie, 1971, p. 1O4, fig. 4.14.

2. USSR Author's Certificate No. 312255, cl. Q 06 F 3/12, 1969.

3. Authors certificate of the USSR 52513O, cl. G About K 5/02, 1975 (prototype).