SU1044439A1 - Apparatus for automatic rejecting of rolled stock - Google Patents

Description

The invention relates to mechanical engineering, in particular to the design of control systems for pressure treatment equipment. A device for automatic rolling out of equipment, containing a control device connected to each other, sensors for moving the strip and cut blanks, a block for tracking strip and information transducer, and connected in series a cutter position sensor, a logic circuit, a block for defect defects, a node are known. information about the quality of the cut blanks, the shift register and the decoder, as well as the delay line associated with the logic circuit and the strip defect storage unit, the device has drawbacks due to the rejection of several blanks and adjacent to the reject, due to the lack of quality control of the cut of each blank, which leads to a decrease in the actual yield of the blank. The purpose of the invention is to improve the quality of rejection by separating from the stream of cut blanks to one rejected, which increases the yield of suitable blanks. To achieve the goal, the device for automatic rolling out of the car, containing interconnected control device, sensors for moving the strip and cut billets, blocks for tracking strip defects and information transfer and connected in series sensors for positioning the cutting mechanism, a logic circuit, a block for defects for strip defects, an information node about the quality of the cut blanks, the shift register and the decoder, as well as the delay line associated with the logic circuit and the block of n-thi strip defects are equipped with transducers additional cutting and gripping mechanisms, two additional shift registers, two additional information transfer blocks, additional stripe defect memory and tracking strip defects, and the quality information node of the cut pieces is made in the form of information transfer block connected to shift registers whose outputs are connected with the decoder, and the inputs with the displacement sensor O1 of cut blanks and an additional memory block, the input of the latter is connected with the sensor position of the gripping mechanism and logical c connected with sensors for positioning and moving the cutting mechanism, and with the outputs to the first additional shift register and an additional block for tracking strip defects, the first additional information transfer unit being connected by inputs to the first additional shift register and the outputs for the additional tracking block strip defects, while the inputs of the second additional shift register are connected to the sensors for positioning and moving the cutting mechanism, and the outputs to the inputs of the second additional shift eye information transfer. FIG. 1 is a block diagram of the device; in fig. 2 is a diagram of the marking of the length of the cut-off blanks with the corrections produced by the device The rejecting device contains a control device 1 determining the quality of the original strip 2, the strip movement sensor 3, kinematically associated with pull pulleys C, the first (main) 5 and second 6 (optional) stripe defect tracking units, the first (main) 7 and the second (optional) 8 defect memory blocks, logic circuit 9, displacement sensor 10 and sensor 11 of the carriage 12 and the cutting tool 13 of the cutting mechanism 14 and sensor 15 of the capture mechanism 16. strip, the first additional shift register 17, unit 18 source the first additional information transfer unit 19, the movement sensor 20 of the workpieces 21 behind the cutting mechanism, kinematically connected with one of the rollers 22 of the roller table 23, the delay line 2k, the decoder 25 controlling the electromechanical switch 26, switching the supply of workpieces to streams 27 of a quality or 28 rejected products, node 29 of information about the quality of rolled products cut by the cutting mechanism, consisting of shift registers 30 and 31, accompanying information about the movement of the trailing edge and the quality of the cut of these blanks, the main information transfer unit 32, the second additional shift register 33 and the second additional information transfer unit Z. FIG. 2 numbers 1-IV conditionally show the position of the cutting tool along the axis of the unit in the process of acceleration, synchronization and cutting with a cutting mechanism at the moments when the cutter is in position: I - in the initial position, II - in the control position; W - at the beginning of the cut; IV - at the end of the cut. The same diagram shows the location O of the location of the control device, and the V switch 26 of the flow of rolling along the axis of the aggregate and the distance from them to the cutting tool at different points in time in the process of accelerating the carriage and making a cut. The whole section of maintenance information about the quality of rolled products is conditionally divided into two parts with a known constant for a given unit, for Lt from the inspecting device to a certain carriage control position and a second one, also with a known and constant carriage for this unit, of length L from this control the position of the carriage to the switch of the rolling stock flow. The control position is the position of the carriage, which the latter knowingly passes during acceleration and reverse, for which the corresponding sensor 11 is installed. Thus, it is known in advance that the actual cut will begin after the carriage 12 passes the test position and the actual length of the tracking section is not correct. lanes Lpo; greater than L,) by some value uL i.e. L |, and the actual length of the section for maintaining information about the quality of the cut billets of steel is less than Ln, respectively, by the value of l C, i.e. Ljjp 1n-b ,, For determining the values of uL and dL, a sensor 15 is inserted, which fixes the moments of the beginning and end of the cut, which uses the sensor 15 of the projection grab mechanism. The paths traveled by the carriage 12 from the moment the sensor 11 operates in the carriage's control position 11 to the moment of switching on and off the mechanism 1b for gripping the car, respectively, are equal to & 1 and l L2. The counting and LI is carried out by the first 17, ab L, the second additional 33 pulse-shift registers of the installed carriage sensor. The number of bits of the node 29 for maintaining information about the quality of cut billets for hire, taking into account the discreteness of the pulses of the sensor 20 for moving the blanks behind the cutting mechanism, corresponds to the length Li. The correction is a decrease in the number of working bits of this node by an amount corresponding to the length & L, is carried out by the second additional information transfer unit 3 for each piece to be cut, according to the state of the second additional shift register 53 at the moment the locking mechanism is turned off. The first and second blocks 5 v (6 of the information on the defect of the strip are connected in series, the number of bits of the first block, taking into account the discreteness of the sensor for moving the strip 3, corresponds to the length and remains unchanged during operation of the device. Correction (increase in the number of working bits of the second block 6 information about the defect strip is carried out continuously in the process of carriage acceleration from the moment the sensor 11 of its test position responds to the moment the gripping mechanism is activated by an amount corresponding to & L, jt, varying from zero to & 1, by the first additional information transfer unit 19 on the state of the first additional shift register 17. This takes into account the actual position of the carriage at the time of the possible rewriting of information from the first to the second stripe tracking unit. the time of advancement of this information on the second block 6 of the tracking strip defect is taken into account by the fact that this block is made in the form of a reverse shift register, to the right of which the input of the shift is received by it The pulses from the sensor 3 move the strip, and to the input of the information shift to the left - the pulses of the sensor 10 move the carriage passed to the first output of the logic circuit 9. If by the time the mechanism for capturing the rental is on, the information about the conditionality of the strip will pass to the output of this block that the defect section of the strip overtook the carriage more precisely than its place, where the cutting tool is located. A rolled stock is formed in this: The device is classified as not conditional, because in the process of acceleration the speed of the carriage is always not greater than the speed of the strip, and the section of the strip that once passed the carriage is always located on the piece of rental currently being cut. The device works as follows. From the control device 1, the information about the poor condition of the strip 2 is recorded in the first block 5 of the accompanying strip defects, the number of operating bits of which, taking into account the discreteness of the pulses of the sensor 3, of the strip moves to the value Lf (Fig. 2). As the defective part of the strip 2 moves along the aggregate, information about it under the action of the pulses of the sensor 3 moves in the defect tracking unit 5 from the input to the output, and after that, as the workpiece passes the path equal to L, it enters the information input of the first additional information transfer unit 13 . If at this moment the carriage 12 is at rest or has moved, but has not yet passed the test position — the position of the sensor 11 of the test position 11, then in the shift register 17, shift 1 is recorded only in the last bit, whose input is connected to source 18 single signals, and the output with the last. discharge unit 19 transfer. Therefore, the information received at the input of the transfer unit 19 will be transferred to the last discharge of the second block 6 of tracking strip defects and immediately from the output of this block will go to the recording input of the first block 7 of the memory of defects. After moving the carriage 12, starting from the moment when the carriage test position sensor 11 triggers and until the hire pickup mechanism 1b is activated, the information shift input goes into the shift register 17 from the first output of logic circuit 9 the carriage motion sensor 10 (sensor pulse discreteness 3 and 10 are the same). With the arrival of these pulses in shift register 17, 1 is recorded 9 not only in the last, "o and in the previous bits, with the arrival of each pulse, the number 1 recorded in it becomes one large e. The transfer unit 19 is connected to the corresponding outputs of the register 17 and to the serial inputs of the second block 6 for tracking strip defects. The number of bits of blocks 6, 17, and 19 is the same and, taking into account the discreteness of the pulses of sensors 3 and 10, corresponds to the maximum POSSIBILITY of the carriage until the synchronization of the speeds of the carriage and the strip and the activation of the gripping mechanism 16. The numbers of interconnected bits of block 19 transfer of the second block 6 are accompanied by. The defects of the bands and the first additional shift register 17 coincide. The transfer unit 19 monitors with what bit i in register 17 is recorded 1 and transfers the information received to the information input to (- and bit V of the tracking unit 6, connected through the transfer unit to the f-th register bit 17 Thus, during the acceleration of the carriage of the cutting mechanism, the length of the strip track support section is continuously increased by the amount of distance traveled by this time by the carriage from the position of the carriage control position sensor 11. Further movement of the carriage during the advancement of information about the strip defect along the block 6, as already mentioned above, is taken into account by the fact that this block is made in the form of a reverse shift register, to the right input of which information is received pulses from the sensor 3 of moving the band, and to the input of information moving to the left are the pulses of the carriage moving sensor 10 At the first output of the logic circuit 9. 8, the moment of switching on the capture mechanism 16, the arrival of pulses at the input of the information shift to the left of the register 17 and block 6 is terminated. The first block 7 of the memory of defects is interrogated, and the same pulse from the second output of the logic circuit 9, the shift register 17 returns to the initial state, in which 1 is written in the last bit, and in the rest of O. All defects that passed through the output second block 6

accompanying the strip defect, refer to the rolled stock currently being formed, and the information about them is copied to the second defect memory block 8.

Further maintenance of information about the quality of cut pieces of rolled products is carried out by node 29, consisting of two register shift: register 30, in which information on the trailing edges is maintained, and register 31, in which quality maintenance is carried out. (Nonconformance) cut billets rolled, interconnected by the block 32 transfer information. The information shift pulses to the registers 30 and 31 come from the rental sensor 20. The number of bits of the registers 30 and 31 and the transfer unit 32, taking into account the discreteness of the pulses of the sensor 20, equal to the discreteness of the pulses of the sensors 3 and 10, corresponds to the distance i (Fig. 2).

At the moment when the capture mechanism 1b is released, the second defect memory 8 block is polled and the information about the defect of the currently formed rolling stock through the transfer unit 32 is transferred to that bit of the quality register 31, the number of which is equal to the bit number of the first edge register 30 in the course of the movement of information of the register 30 in which 1 is recorded, since in the latter the information on the trailing edge of the previous hire billet is currently recorded, thereby informing the substandard condition of this blank ata It appears correlated with information about the previous trailing edge. Synchronously with the movement of the previous billet through the unit in node 29, it moves from the entrance to the output of information about its trailing edge (register 30) and the conditionality of the next rolled billet (register 31). At the output of the node 29, the rental information is decoded by the decoder 25 and fed to the control circuit of the electromechanical switch 26, which switches the flows of blanks depending on their quality: respectively, to the flow 27 of rolled or rejected 28 rolled products.

The recording of information about the position of the rear edges of the rolling stock in the register 30 is carried out as follows.

At the moment when the sensor 11 control position of the carriage is triggered when the last one for the first discharge of the second additional shift register 33 is triggered, pulses of the carriage movement sensor 10 are input to the shift information input of the second additional information register 33.

which is in sync with

moving the carriage advances in register 33 from the input to the output. By the time the rental mechanism is released, this 1 and register 33 will shift to the output, taking into account the discreteness of the pulse 10 of the sensor 10, as far as the rear edge of the formed blank of the carriage reference position (.AL in Fig. 2). At the moment when the pickup is lowered, the signal from the output of the pickup mechanism sensor 15, which is delayed in the delay line 2 for the time required for the above-described operation to correlate the quality information of this rolled workpiece with the position of the rear edge of the previous workpiece, is transmitted to the information input of the second additional block 3 transfer of information. By transfer unit 3, this signal is transferred to register bit 30 (writing 1), the number of which is equal to the number closest to the input of register bit 33, in which a currently recorded 1. The number of register bits 33 and block 3, taking into account the discreteness of the pulses Sensor 1C corresponds to the maximum possible travel of the carriage 12 of the mechanism And the cut.

The efficiency of using the device is ensured by an increase in the accuracy of the rejection, namely the exclusion of rejection of several suitable billets and an increase in the actual yield of rolled metal.

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Claims (1)

A DEVICE FOR AUTOMATIC DISASSEMBLY OF RENT, containing a control device interconnected, strip movement and cut-off blank sensors, strip defect tracking and information transfer units, and a cutting mechanism position sensor connected in series, a logic circuit, a strip defect memory block, a cut-off quality information block , a shift register and a decoder, as well as a delay line associated with the logic circuit and the memory block of the strip defects, distinguishing me in that, in order to increase the accuracy and rejection, it is equipped with displacement and capture mechanisms displacement sensors, two additional shift registers, two additional information transfer blocks, additional strip defect memory and strip defect support blocks, and the information block about the quality of cut blanks is made in the form of an information transfer block connected with shift registers, the outputs of which are connected to the decoder, and the inputs to the displacement sensor of the cut pieces and an additional memory unit, the input of the latter is connected to the sensor position of the capture mechanism and a logic circuit also connected to position sensors and movement of the cutting mechanism, and outputs - to the first additional shift register and ^ additional 'block for tracking strip defects, and the first additional information transfer unit is connected by inputs to the first additional shift register, and by outputs - with the inputs of an additional unit for tracking defects on. loses, while the inputs of the second additional shift register are connected to the position and displacement sensors of the cut mechanism, and the outputs are the inputs of the second additional information transfer unit. 1 1044439 2