SU1067424A2 - Flaw detector attachment for blocking article edges - Google Patents

Abstract

1. DEVICE TO DEFECTION FOR LOCKING EDGES OF A PRODUCT BY AUT.St. No. 930101, characterized in that, in order to increase the reliability of monitoring asymmetric products, it is provided with an auxiliary converter connected in series, located in front of the main converter at a distance greater than the products length, a driver and an orientation module of the product, the output of which is connected to the input / output driver of the driver exemplary signals. w O5 m Y 4

Description

2. The device according to claim 1, characterized in that the orientation unit of the product is designed as a comparator connected in series, the first circuit AND, the second circuit AND and the first counter, connected in series to the second comparator, trigger, the third circuit AND, and the second counter, inverter, connected between the output of the second comparator and the second input of the first circuit And, the one-shot connected between the bypass of the first comparator and the reset inputs of the first and second counters and the trigger, and a quartz oscillator connected to the third input of the first And the comparison circuit connected to the outputs of the first and second counters, with the second output of the trigger connected to the second input of the second AND circuit, the second input of the third AND circuit connected to the output of the first AND, the inputs of both comparators are unified. They are the input of the product orientation block, and the output of the block is the output of the comparison circuit.

The invention relates to means of non-destructive testing and can be used in mechanical engineering for non-destructive testing of asymmetric small-sized products, including edge zones. According to the main auth. No. 930101, a device to a flaw detector for blocking the edges of the product, comprising a serially connected measuring transducer, a measuring unit, a comparison unit to a terminal unit, a serially connected blocking converter, a functional converter, is known; block output, a driver of exemplary signals, the output of which is connected to the second input comparison unit, control unit, the outputs of which are connected to the inputs of the functional converter, the measuring unit, the former third input signals and comparing the block and the blocking converter mounted coaxially transducer fl3. However, the known device has a low reliability control. parts that are asymmetrical in plane, explained by the significant difference in signals from their edge zones, and the use of passive or active secondary orientation of asymmetric parts leads to a decrease in the performance of automatic control devices and to the occurrence of frequent failures in transportation and orientation systems. The purpose of the invention is to increase the reliability and performance of control of asymmetric products. The set goal is achieved by the fact that the device to the flaw detector for blocking the edges of the product is equipped with an auxiliary converter connected in series, located in front of the main converter at a distance greater than the length of the products, the shaper and the product orientation unit whose output is connected to the driver of the exemplary signals. In addition, the unit orientation of the product is made in the form of a serially connected comparator, the first And circuit, the second And circuit and the first counter, connected to the second comparator, the third And circuit trigger and the second counter, the inverter connected between the outputs of the second comparator and the second input of the first circuit And, a one-shot connected between the signal of the first comparator and the reset inputs of the nejffioro and the second counters and the trigger, and a quartz oscillator connected to the third input of the first AND circuit, and the comparison circuit, It is connected to the outputs of the first and second counters, with the second output of the trigger connected to the second input of the second circuit AND, the second: the third input of the third circuit AND connected to the output of the first circuit AND, the inputs of both comparators are combined and are the input of the orientation unit of the product, and the output block is the output of the comparison circuit. FIG. 1 shows a block diagram of the device proposed in FIG. 2; a functional diagram of an orientation unit is shown; Fig, 3 is a functional diagram of the shaper; FIG. 4 is a functional diagram of a driver of exemplary signals; Fig, 5 - some types of industrial short products; Fig. 6b shows time diagrams of the change in the signal of the measuring converter Jari through asymmetric products passing through it. The device (Fig 1) consists of a series-connected measuring converter 1, measuring unit 2, comparison unit 3 and terminal block 4, successively connected blocking converter 5, functional converter b, n threshold blocks 7-10, and driver 11 sample signals, control unit 12, the outputs of which are connected to the inputs of functional converter b, and Tonnage unit 2, exemplary signal shaper 11 and a second input of the comparator 3, a third input coupled to the output of the model 11 signals. The blocking converter 5 is installed coaxially to the measuring transducer 1I. The device also contains a series-connected auxiliary converter 13, a driver 14, a unit 15 for orientation of the products. Position 16 denotes a product under test, position 17 denotes a pipeline on which eddy current transducers (VTP) 1.5 and 13 are attached. UNIT 15 of product orientation (FIG. 2 consists of serially connected first comparator 18, first circuit 19 And, second And the first counter 21 and the second comparator circuit 22, the input of which is connected to the input of the first comparator 18, the trigger 24, the counting input of which is connected to the output of the second comparator 23, and the direct output to the second input of the second , inverter 25, included m I am waiting for the output of the second switch 23 and the second input of the vertical circuit 19 I, the third circuit 26 K, the first input of which is connected to the inverse output of the trigger 24, the second input to the output of the first circuit 19 AND, the second counter 27, which is connected to the output the third circuit 26 And, and the output with the second input of the circuit 22 of the comparison, the crystal oscillator 28, the output connected to the third input of the first circuit 19 And, radiodibrator 29, the input of which is connected to the output of the first comparator 18, and the output to the reset tires of the first and second counters 21 and 17 and trigger 24. Shaper (f ig. 3) made in the form of serially connected autogenerator 30 and discriminator 31 Shaper 11 exemplary signals (Fig. 4) consists of inverters 32, 33 and 34, circuits 35 and 36 AND-NOT, cxevi 37-45 AND, one-shot 46 and 47, trigger 48, OR circuit 49, auto-generators 50-55. FIG. 5 figures indicate: 56 - smooth roller; 57 —a cylindrical product with symmetrical boring on the ends; 58 - high cap; 59 and 60 are cylindrical products with different brushes on. ends; 61 - multilayer high cap. FIG. 6 shows the most typical character of changes in the parameters of the measuring transducer 1 when moving through it. An asymmetric product; 62 - in front, 63 - in front. The device works as follows. The controlled asymmetric article 16 moves under its own weight inside the pipe 17. The signal at the output of the auxiliary converter 13 is changed according to the law illustrated in FIG. 6. For definiteness, it is considered that a type 58 product is driven forward in a barrel. In unit 15, the orientation of the products is first measured by the time interval -t, and then the time interval ± 2. The comparison circuit 22 determines what informs the logic signal at its output. The last signal is coded information about the orientation of the products inside the pipeline. In order for the orientation determination to occur before the start of product quality control, the distance between the transducers 13 and 1 is chosen as large as possible. With a further approach of the edge of the product to the converter 5 blocks -. threshold blocks 7–10 successively. The battle transitions from a logical state to a logical 1 state. The operating frequency of the blocking driver 5 is chosen significantly higher than the operating frequency of the measuring transducer 1. This virtually eliminates the influence of the wall thickness of the product on the output signal of the blocking converter 5 and makes it sensitive only to product theft. The first signal of logical i appears at the output of threshold block 7, which leads to the appearance of a signal of logical, output And circuit 38. As a result, a one-shot 47 is triggered, allowing the information from the product orientation block 15 to trigger 48 state of logic. . As a result, an enable signal is applied to the second inputs of circuits 39-41, which prepares auto-oscillators 5052 for subsequent operation. The first starts the auto-oscillator 52, since on the run of the circuit 38 and the logical signal is already formed. On a command coming from the control unit 12, the comparison unit 3 first receives the information from the measurement unit 2, and

then from the generator 11 exemplary signals, namely from the oscillator 52 through the circuit 49 OR and the circuit 45 I. Thus, depending on the magnitude of the compared signals (in this case, the frequencies of the oscillators), the corresponding signal is sent to the terminal unit 4.

As the blocking of the product further approaches the blocking converter 5, a logic signal appears at the output of the threshold block. This leads to the appearance of an enabling signal at the output of the 37A circuit and the inclusion of the autogenerators 51. This exemplary signal is also compared in block 3 comparisons with the current information from measuring unit 2, etc.

After testing the front edge of the moving product, the driver 11 of the exemplary signals is switched to the inverse mode. AT

In this example, the trigger 48 is switched by the signal 1 coming from the one-shot 46. After this time point, the sample signals are generated by the auto-generators 53-55. These signals are also output by the commands generated by the blocking converter 5, the function converter 6 and the threshold blocks 7- ten.

0 When moving the product to the bottom of the block forward. 15 orientation of the products, measuring the time intervals i t, forms at its output a logical O signal. This leads to the fact that the trigger 48 initially

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As a result of this, information is first output, stored with the help of auto-generators 53-55, and then with auto-generators 50-52.

The device provides reliable control of asymmetric products.

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Claims (2)

1. DEVICE FOR A DEFECTOSCOPE FOR LOCKING THE EDGES OF THE PRODUCT BY AUTS. No. 930101, characterized in that, in order to increase the reliability of control of asymmetric products, it is equipped with an auxiliary converter connected in series, located in front of the main converter at a distance greater than the length of the products, a shaper and a product orientation unit, the output of which is connected to the input, remote control of the model shaper signals. SU „„ 1067424 2. The device according to π. 1, characterized in that the product orientation unit is made in the form of a comparator connected in series, a first circuit And, a second circuit And and a first counter connected in series to a second comparator, a trigger, a third circuit And and a second counter, an inverter connected between the output of the second comparator and the second input of the first circuit AND, a one-shot connected between the output of the first comparator and the reset inputs of the first and second counters and trigger, 'and a crystal oscillator connected to the third input of the first circuit And, and the circuit avoneniya connected to the outputs of the first and second counters, and the second output of the trigger is connected to the second input of the second circuit And, the second input of the third circuit And is connected to the output of the first circuit And, the inputs of both comparators are combined. They are the input of the product orientation block, and the output of the block is the output of the comparison circuit.