SU961974A1 - Automatic machine for cutting clay bar - Google Patents

Description

(54) AUTOMATIC MACHINE FOR CUTTING CLAY BEAM

one

The invention relates to machines for the production of building materials and can be used in the creation and modernization of two-stage brick cutting machines.

There are automatic machines for cutting clay bars, a press, a bar cut mechanism, a multi-string cutting mechanism, and an overhanging conveyor with a flap equipped with a sensor 1.

The known automaton does not reduce the speed of the bar when approaching the stop and does not have any blockages from breaking the string and pairing the bars, which reduces the reliability of its work and requires continuous monitoring by the operator.

Closest to that proposed by technical sushi is an automatic machine for cutting a clay beam, which contains a press with a control unit, a beam cutter mechanism, a multi-stringing cutter with a pusher and a pusher position sensor, a beam position sensor, a receiving conveyor with a drive and a control unit, the logical element And the trigger, the inputs of which are connected to the sensors of the position of the beam and the pusher, the trigger output and the sensor of the position of the beam are connected to the corresponding inputs of the element And, the output of which is connected to one input Lok controlling the drive of the receiving conveyor 2 and the pusher.

5In this automatic machine, the speed of the beam at the approach to the flap is reduced, but the press is not stopped when a string is broken or another malfunction of the beam cutter mechanism, as well as the blockage from spacing of the parallel bar mechanisms, stops the subsequent mechanisms of the production line, which reduces the reliability of the machine and requires continuous operator control. The aim of the invention is to improve the accuracy of the cut and the reliability of the auto mat operation.

The goal is achieved by the fact that a cutting machine for a clay bar, containing a press with a control unit, a beam cutter mechanism, a multi-stringing mechanism for cutting with a pusher and a pusher position sensor, a beam position sensor, a receiving conveyor with a drive and a control unit, a logical Element And and trigger, whose inputs are connected to bar and pusher position sensors, trigger output and beam position sensor are connected to the corresponding inputs of And element, the output of which is connected to one input of the drive control unit the house of the receiving conveyor and the pusher, an additional trigger and an And element, an OR logical element and a delay element are introduced, the output of the beam position sensor is connected to the input of the delay element and one input of an additional And element, the other input of which is connected to the additional trigger output, one input of which is connected with the output of the element And, and another input with the sensor of the position of the pusher, the output of the additional element AND is connected to another input of the control unit of the drive of the receiving conveyor by not one input of the element OR, etc goy input coupled to an output of the delay element and the output of OR element connected to the press control unit. FIG. 1 shows a clay cutting machine; in fig. 2 is a timing diagram of the operation of elements of the control circuit. The machine contains a press 1 with a control unit 2, a mechanism 3 lengths of measuring bar 4 from a continuously formable presso.m clay tape 5, a mechanism 6 of multi-string cutting with a receiving table 7 and a pusher 8 with a sensor 9 position of the pusher, sensor 10 position of the beam, free conveyor 11 with a drive 12 and a control unit 13, a trigger 14 and an additional trigger 15, an AND 16 logical element and an AND 17 additional logical element, an OR 18 logical element and a delay element 19. The press control unit 2 is connected to the output of the OR element 18, one input of which through the delay element 19 is connected to the sensor 10, and the other to the output of the element AND 17. One input of the element And 17 is connected to the output of the trigger 15, and the second to the sensor 10. The inputs of the trigger 15 are connected to the sensor 9 and element 16. The inputs of this element are connected to the inverted output of the sensor 10 and the output of the trigger 14, the inputs of which are connected to the sensors 9 and 10. The inputs of the block 13 of the overhang conveyor are connected to the outputs of the elements 16 and 17. The automatic works as follows. From the clay tape 5, which is continuously molded by the press 1, the measuring bar 4 is cut off by the mechanism 3, which is transmitted by an overtaking conveyor 11 to the multi-string cutting mechanism 6. Before the pusher 8, the bar acts on the sensor 10, the signal of which switches the first trigger 14. At the inputs of the element 16, there was previously a zero signal of the trigger 14 and a single signal from the inverse output of the sensor 10, according to which the output of this element was a zero signal. When the sensor 10 is acted upon, the signal from the inverted output of this sensor becomes zero, and the signal from trigger 14 becomes single, as a result of which the output of the And 16 element continues to remain a zero signal. After the passage of the beam for the sensor 10 (Fig. 1, dotted line), single signals appear on both inputs of the element. The signal element And 16 reduces the speed and stops the drive 12 of the overtaking conveyor 11, the command to cut the bar by the pusher 8 and switch the second trigger 15. The measuring bar is pushed by the pusher 8 through the cutting mechanism 6, cutting into individual bricks. At the end of the stroke, the plunger acts on the sensor 9, the signal of which switches both the flip-flops to the initial state. The pusher returns to its original position, and the bricks remain on the receiving table 7, from where they are transmitted further to subsequent posts. If subsequent posts are occupied, then the next 6-dimensional beam arriving at the mechanism cannot be cut. As in the case described above, the bar acts on the sensor 10, ensuring the sequential connection of the flip-flops 14 and 15. Since the push to the pusher command from the element 16 cannot be realized due to locks informing about the presence of bricks on the table 7, the bar remains to lie on transporter. The next (third) bar also acts on the sensor 10. The signals of this sensor and the second trigger 15 are fed to the inputs of the AND element 17, the input signal of which is fed to the control unit 13 of the overhaught conveyor drive and through the OR element 18 to the press control unit 2, stops the conveyor 11 and the shutdown of the press 1.. After the malfunction has been eliminated, the bricks from the receiving table 7 are transferred to subsequent posts, the bar in the zone of mechanism 6 is cut. The trigger 15 switches back to its original state, the press 1 and the conveyor 11 are switched on again and work as usual. When the machine operates normally, when the measuring bar 4 acts on the sensor 10, the conveyor 11 immediately turns on and the beam is transmitted to the mechanism 6. a certain known time, equal to the length of the beam, divided by the speed of the conveyor. The delay element 19 connected to the output of the sensor 10 is configured so that the signal at its output appears after 15-20% more time than the passage of the beam past the sensor. In normal operation, the signal from the input of element 19 disappears earlier than the delay time and at its output there is always a zero signal. In the event of a malfunction, for example when a string is broken, the effect on the sensor 10 continues for a length of a predetermined time and

The output of element 19 is a signal which, when fed through element OR 18 to press control unit 2 of the press 1, ensures that the latter is switched off.

After elimination of the malfunction, the impact of the beam on the sensor 10 is stopped, the signal from element 19 disappears and press 1 is turned on again. In the diagram of FIG. 2 from the moment A to the moment B, the operation of the automaton is shown normally. At time B, a string break occurs and after a few seconds at time B, the press stops. The conveyor is not turned off, and after replacing the string, as well as pieces of the beam, the manually cut beam leaves the sensor 10, from the moment C the press is turned on and the machine continues normal operation. The bar supplied at time D, for some reason, remains uncut on the conveyor, and. at time D, when the next beam approaches and impacts it on the sensor 10, the conveyor and the press are shut off. After cutting the timber at the time E, the trigger 15 is turned off and the machine and the press continue normal operation.

Thus, the proposed technical solution ensures the interlocking operation of the machine together with the press and the stopping of the corresponding mechanisms for any malfunctions, which increases the reliability of the machine, allows it to be operated without constant supervision of the operator, and the operator simultaneously maintain the press and the machine.

Claims (2)

Invention Formula A cutting machine for a clay bar containing a press with a control unit, the bar cut mechanism, the multi-string cutting mechanism with the pusher and the pusher position sensor, the bar position sensor, the receiving conveyor with the drive and control unit, the AND gate and the trigger, whose inputs are connected to the bar and pusher position sensors, the trigger output and the bar position sensor are connected to the corresponding inputs of the element I, the output of which is connected to one input of the control unit of the drive of the receiving conveyor and the pusher, characterized in that, in order to increase the cutting accuracy and reliability of the car mat, additional trigger is introduced into it - tt element AND, logical element OR, and delay element, the output of the beam position sensor is connected to the input of the delay element and one input of the additional element AND, the other input of which is connected to the output of the additional trigger, one input of which is connected to the output of the AND element, and another input with the position sensor of the pusher, the output of the additional element AND is connected to another input of the drive control unit of the receiving conveyor and to one input of the OR element, the other input of which is connected Inen with the output of the delay element, and the output of the OR element is connected to the press control unit. Sources of information taken into account in the examination 1. Shukurov E. D. Zorokhovich V. S., Zemlkina O. A. Avtomat SMK 169 for cutting and laying brick. - “Construction and road maschiny, 1975, No. 11, p. 20-22. 2. USSR author's certificate No.-715337, cl. B 28 B 11/14, 1977 (prototype). hl S