SU1251110A1 - System for controlling the manufacturing process of discrete production - Google Patents

Abstract

The invention is applied to control systems of discrete production; it can be used for statistical control of equipment operation, as well as control of parts. The purpose of the invention is to increase the reliability of the control. The system contains a centralized device. a control consisting of a block for registering the number of parts, a block for counting downtime and an alarm unit, as well as n automated workstations, each of which consists of an I element, a first console, a production counting block, a shutdown block, and technological equipment; transport channels, a size control device, a second console, a controller, a printing device, a pulse distribution device. The introduction of a second console and the corresponding functional connections allows to achieve the goal. 5 il. C & (Lh ate

Description

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The invention relates to discretionary production control systems that can be used for statistical control of equipment operation, as well as control of parts „5.

The purpose of the invention is to monitor the accuracy of control.

FIG. 1 is a block diagram of control systems; in fig. 2 is a block diagram of a pulse distribution device; FIG. 3 is a block diagram of a second ult (controller console); on i, 4 is a block diagram of the first console; and FIG. 5 is a block diagram of a controller.

The control system (FIG. 1) contains a t5 and a centralized monitoring device I, consisting of a block of number of parts recording, block 3 of counting downtime and alarm block 4; n automated workplaces, each of which consists of element 6, the first console 7 - (work station console), the counting unit 8, the output, the drive disconnecting unit 9 and the technological equipment drive 10; n transport channels P, a device 12 for controlling dimensions, a second console 13 (controller console), a controller 4, a printing device 15 and a pulse distribution device 30 16.

The device 16 of the distributor and pulses (Fig. 2) contains the first switch 17, the first trigger 18, the second switch 19, the first counter 20 has 35 pulses, the second pulse counter 21, the memory block 22, the second element And 23, the generator 24, the second trigger 25, the third counter 26 pulses

The second console 13 (controller console, 40 of FIG. 3) contains the shift register 27, the first display elements 28, -28, the first one-shot 29, the first decoder 30, the switch block 3, the second one-shot 32, the signal element 33 45, the fourth pulse counter 34 , the third element And 35, the fourth element And 36,

- The first console 7 (the desk of the workplace, Fig. 4) contains the third commutator 37, the formers. pulses, the second shift register 39, the third one-shot 40, the third trigger 41, the fourth trigger 42, the second display elements 43, -43k, the second 55 decoder 44, the fifth pulse counter 45 of pulses, the fifth element And 46, the sixth element And 47.

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The controller 14 (fn1. 5) contains the fourth switch 48, the first register 495, the second memory block 50, the adder 51, the adding unit 52 modulo two, the program back block 53, the control block 54, the second register 55, the third memory block 56, comparison element 57, division block 58, third register 39, print control block 60.

The system works as follows.

The centralized control device 1 collects and records information on the number of manufactured products, equipment downtime for each workplace 5. and performs call signaling of auxiliary workers, while a separate technological unit or equipment group is considered a workplace. image line with continuous technology.

Data on the number of manufactured parts are transferred to the device 1 of the centered control from the unit 8 of the production account. The call signaling and installation of causes — simple technical equipment can be carried out automatically or manually with the help of formers of 38 pulses installed on the consoles 7 workstations 5,

A sample of parts is automatically or manually taken from each workplace at specified intervals and transmitted to the dimension control device 12 for measurement. The operator-controller, using switches located on the console 13, dials the code of the workplace 5, from which parts were retrieved, the data on the results of the control and the code of the workplace 5 are entered into the controller 14, Information can be entered into the controller 4 interrupt, direct memory access or program mode. Controller 14 can statistically process the results of measuring part dimensions. The results of the analysis of a sample of parts are output from the programmable controller to the printing device 15 and, through the device 16, to the pulse distribution, to the console 13 of the controller and to the desks of the 7 work stations. And information

31

enters the remote control 7 of the workplace 5, from which the sample is taken. The information is displayed on the display elements of the consoles 7 and 13 in the form of a positional binary code, each digit of which indicates a defect or rate for the corresponding part size, and an additional bit indicating the validity or unsuitability of the part as a whole.

When a signal arrives at the control panel 7 at least one of the dimensions or when a signal arrives, the control panel 7 generates a signal to disconnect the drive 10 of the processing equipment that goes to the AND 6 element. With this signal, when a signal is received from the production account 8, corresponding to the end of the next part processing cycle, the drive 10 of the process equipment is disconnected using the drive shutdown unit 9. The indication of the results of monitoring this sample of parts is stored on the remote control 7 of workplace 5 until the end of control of the next sample. When entering data for each part from sample B, controller 14 programmatically monitors the input information. For this, parity control can be used, for example. When melting input, i.e. if no errors are detected, the controller 14 generates a Response signal, which through the device 16 of the pulse distribution enters the controller 13 of the controller and signals that the data entered into the controller 14 is correct. Moreover, when outputting a signal, the Response passes through the pulse distribution device 16 and its operability is monitored. If, after pressing the Start button (not shown), the operator-controller does not receive the Answer signal, it can produce and re-enter information. No Signal Response when repeatedly entering information (pressing the Start button) indicates a failure in the system.

As mentioned above, at the end of the statistical processing, the entire sample is used to output information from the programmable controller 14 to the workstations consoles and the controller console. For this information, the operator controller

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jj 20 25

five

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five

0

five

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can control the performance of the system by comparing the results of the control for each part of the sample with the results of the control for the entire sample.

In the steady state mode, cyclic rewriting (regeneration) of information from the memory block 22 of the pulse distributing device 16 to the shift control register 13 of the control unit 13 a) and to the shift control register -39 of the control unit 7 takes place. This is done as follows. From the counting pulses coming from the output of the generator 24 through the switch 19 to the counting input of the pulse counter 20, at its output a code is generated for the address code i-ro of the shift register 27 of the console 13 of the controller and shift controller 39 of the work station 7. The address code of the workplace 5 is generated by the counter 21 of the pulse distributor 16. This code selects the memory area in memory block 22, where information on the sample received from this workplace 5 is stored. Using clock pulses from generator 24 through switch I7 to inputs of control panels 7 and 13, the information is synchronously recorded from block 22 memory in registers 27 and 39 shift. At the same time, the counter 21 of the pulse distribution device 16, the counter of the console of the workplace console and the counter of the controller’s console 34 operate synchronously. Synchronization is achieved due to the forced reset to the zero state of the counters 34 and 45 by pulses coming from the high-order output of counter 21 through single-oscillators 29 and 40 to the R-inputs of the counters 34 and 45. When the codes from the outputs of the counters coincide 34 and 45 to the input groups of the And 35 and 46 elements, with the codes arriving at the other inputs of the And 35 and 46 elements, level r 1, coming from the outputs of these elements to the inputs of the And 36 and 47 elements, the sync pulses are allowed to pass through the And 36 elements sync register input 27 shift and cher of -47 and AND gate switch 37 - 39 to synchronize the shift register input. The information recorded in the shift registers 27 and 39 is displayed on the display elements 28 and 43. Descrambler 44 Console 7 of the workplace when a signal arrives

according to one of the dimensions or upon receipt of a signal It is not worthwhile to generate a disconnection signal from the drive of technological equipment.

When forming the Response signal from the controller 14 to the inputs of the element And 23 of the pulse distributing device 16, the code of that workplace 5 enters, the code of which was dialed using the switch control unit 31 of the controller 13 when entering information into the controller 14. To the D input of the trigger 18 from the controller 14, the level I is applied. When the code coming from the outputs of the counter 21 to the inputs of the AND 23 element coincides with the code from the controller 14, the signal from the output of the AND 23 element sets the trigger 18 to one state. In this case, the passage of pulses from the generator 24 output through the switch 19 is prohibited, the first trigger 25 is set to one at the C-input. Thus, the counter 26 is allowed to operate, the pulses from the switch 19 switch through the first switch I7 to the first output device are prohibited 16 of the distribution of pulses and the passage of pulses from the output of the generator 24 through the first switch I7 to the first output of the device 16 of the distribution of pulses and to the counting input of the counter 26 is allowed. The conversion factor of the counter 26 is equal to the conversion factor of the counter 20 and is equal to the number of bits of registers 27 and 39 of the shift. The pulses coming from the output of the pulse distributing device 16 to the counting inputs of the console shift register 27 and the console shift register 39 7, clear these registers. The decoder 30 of the console 13 with the zero combination at the input produces a signal that arrives at the odnco-oscillator 32, the latter generates a pulse arriving at the alarm element 33, which informs the audger of the controller 14 with a sound signal that the information has been entered into the controller 14 correctly. The overflow signal from the output of the counter 26 triggers the 25 state to the zero state. After that, the level 1 is programmatically removed from the D- input of the trigger 18 and to the input the R-input of the same trigger from the controller 14

Reset signal is given. The pulse distribution device returns to steady state.

When information is output from the controller 4, the operation of the pulse distribution device 16 is similar to the operation in the signal generation mode. Answer. The inputs of the element And 23 from the controller 14 receives the code of the workplace from which the sample of parts was received and the code of which was set using the block 31 of switches by the operator-controller. A level 1 is applied to the D input of the trigger 18. When the codes at the output of the AND 23 element coincide, a signal is generated which, via the C input, translates the trigger 18 into a single state. In this case, the pulses from the generator 24 exit through the switch 19 are prohibited, the trigger 25 is set to one at the C input. Thus, the counter 26 is allowed to operate, the pulses from the switch I9 switch through the switch 17 to the first output of the pulse distribution device 16 and the passage of pulses from the generator 24 output through the switch 7 to the first output of the device 16 and to the counting input of the counter 26 is permitted.

After time T, defined as

Тг | г- - - з)

where F is the clock frequency of the generator 24;

Ef - counter conversion factor 20;

N, j is the recalculation coefficient of the counter 21, after the moment of occurrence of the level at the D input of the trigger 18 from the controller 14 to the memory block 22 by the information input in the serial code using the clock pulses fed to the synchronization input of the memory block 22 from the controller 14, rewrites information.

At the same time, the address of the i-th cell is formed similarly to the regeneration mode of the second counter 20, to the counting input of which in the latter case the clock pulses from the controller 14 go through the switch 9.

No information is written to the memory block from the controller 4 to the R input of the trigger 18, a pulse arrives, which resets this trigger to the zero state, and the device 16 for distributing the pulses goes into the steady state.

The output of the shift register 39 and the output of the switch 37 of the console 7 are connected to the centralized control device 1, which is necessary to carry out the call signaling of ancillary services and set the reasons for the simple process equipment. Paging can be performed manually. This is done as follows. With the help of shapers 38, the necessary information is gathered, after which a pulse is applied to the S input of trigger 41, which translates it into a single state. At the same time, the operation of the counter 42 is permitted, the passage of the clock pulses from the output of the AND 47 element through the switch 37 to the synchronization input of the shift register 39 is prohibited, and the information is transmitted from the drivers 38 to the shift register 39 in parallel.

After that, pulses coming from the first input of the console 7 through the switch 37 to the synchronization input of the shift register 39, sequentially shift the information recorded in this register and store it in the corresponding register of the centralized control device 1. The conversion factor of the counter 42 is numerically equal to the number of bits of the shift register 39. The overflow signal, coming from the output of the counter 42 to the R input of the trigger 41, the trigger is reset to the zero state and the system goes into the steady state. ,

The controller 14 operates as follows. When a signal is received, the start from the size control device 12 to the input of control unit 54 of switch 48 is made by alternately connecting the outputs of size control device 12 to register 49 input. Switching switch 48 is controlled by control signals from the corresponding output of control block 54. Information on each monitored size comes from the appropriate line.

1108

in a serial binary code with an incremental bit of control parity. Register 49 processes the incoming information into parallel code. Parity check using modulo-two addition element 52 If no errors are found in the code pattern of the last size recorded in register 49, control unit 54 produces corresponding signals arriving at pulse distribution device 16 that cause the formation of a signal Response. Otherwise, a signal is not generated. The response does not occur and the controller 4 returns to the original mode (waiting for the Start signal). With the help of adder 51 and register 55 in memory block 56, amounts are accumulated for each of the dimensions. The operation of these elements is controlled by signals from the corresponding outputs of control unit 54. After that, information from memory block 56 through division block 58, which divides by a number equal to the number of parts in the sample, is sent to comparison element 57, which compares arithmetic means. for each of the dimensions with reference values stored in memory unit 50. Moreover, the code received from the console 13 defines the memory area of the memory unit 50, where the reference values for the part are stored. The results of the comparison in the form of Scrap-norm signals for each of the dimensions are recorded in the register 59. The register 59 has an internal OR circuit (not shown), which forms an additional bit denoting the validity or unsuitability of a sample of parts for all sizes as a whole. From the register; 59, the information enters the print control unit 60 and with the help of the corresponding control signals from the outputs of the control unit 54 to the pulse distributor 16.

The number of parts in the sample, which determines the division factor of dividing unit 58, is specified using the program setting unit 53. The function of the program setting unit 53 also includes changing the contents of the memory unit 50, which is necessary when changing the nomenclature of controlled parts.

91251

Thus, the system allows to increase the reliability of control by checking the state of the system, which reduces the likelihood of missing rejected parts. 5

Claims (1)

Invention Formula A discrete production process control system containing a centralized monitoring device consisting of a block for recording the number of parts, a block for counting downtime and an alarm unit, and n workstations, each of which consists of a first console connected by a first output to the corresponding block input counting time is just ev-, the second output - to the first input of the element I, connected with the second input. with the first output of the output counting unit, and the output - with the input of the drive shutdown unit, connected to the output five ten 15 20 1010 home To the technological equipment drive, the system also contains a size control device connected by a transport channel with each workstation, the control output of the size control device is connected to the control input of the controller, and the information outputs to the first information inputs of the controller connected to the first information output with the printing device, and the second information outputs - with the inputs of the pulse distribution device connected by the outputs to the corresponding inputs omatizirovannyh jobs of m- lilayuscha in that, in order to increase reliability of control, it is entered in the second panel, inputs coupled to the outputs of the pulse distribution unit, and outputs - a second controller data inputs. th: y Cj i / a2 iZ ng / ibm non-controller. J5 35 27 28 3 / ORIG.Z U HI J | "I & sz Pclt pai oL / eHo. pesta Fy f in block 6 , FSh.5 Compiled by And „Gorbunova Editor And, Rybinko Tehred M. Khodanych Proofreader L. Pilipenko Order 4413/47 Circulation 671 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow,, Raushsk nab., d 4/5 Production and printing enterprise Uzhgorod, st. Project, 4