阅读说明：本技术 一种基于高精度铜管拉拔高速电机的电流监测系统 (Current monitoring system based on high-precision copper pipe drawing high-speed motor ) 是由 张旭辉 李光辉 罗海潮 罗应江 陈学贵 白洁 谢辉彪 卢茂林 张德志 常俊杰 于 2020-07-13 设计创作，主要内容包括：本发明介绍了一种基于高精度铜管拉拔高速电机的电流监测系统,包括安装在拉拔生产线上的高速电机；在拉拔生产线上还安装有PLC可编程控制机构和核心数据监控系统；PLC可编程控制机构是以CPU模块为控制核心,CPU模块通过U型背板与数字量输出模块连接；核心数据监控系统包括MM440变频器和人机交换触摸屏,MM440变频器的输出端与高速电机的控制端相连,同时MM440变频器和人机交换触摸屏均与CPU模块通过profibus双向通讯连接,在MM440变频器的输出端还连接有无纸记录仪,在数字量输出模块的输出端连接有声光报警灯。本发明能够实时对高速电机的电流进行自动监测,从而保障连续生产时的合格性。(The invention introduces a current monitoring system based on a high-precision copper pipe drawing high-speed motor, which comprises a high-speed motor arranged on a drawing production line; a PLC programmable control mechanism and a core data monitoring system are also installed on the drawing production line; the PLC takes a CPU module as a control core, and the CPU module is connected with the digital output module through a U-shaped backboard; the core data monitoring system comprises a MM440 frequency converter and a man-machine exchange touch screen, wherein the output end of the MM440 frequency converter is connected with the control end of the high-speed motor, the MM440 frequency converter and the man-machine exchange touch screen are both connected with the CPU module through profibus two-way communication, the output end of the MM440 frequency converter is also connected with a paperless recorder, and the output end of the digital quantity output module is connected with an acousto-optic alarm lamp. The invention can automatically monitor the current of the high-speed motor in real time, thereby ensuring the qualification during continuous production.)

1. A current monitoring system based on a high-precision copper pipe drawing high-speed motor comprises a high-speed motor (1) arranged on a drawing production line, wherein the front end of the high-speed motor (1) is connected with a spinning ring and is matched with a core print and a die to process a copper pipe; the drawing production line is characterized in that a PLC programmable control mechanism and a core data monitoring system arranged at the middle section of the drawing production line are also arranged on the drawing production line; the PLC programmable control mechanism takes a CPU module (6) as a control core, and simultaneously combines and uses a digital output module (7), and the CPU module (6) is connected with the digital output module (7) through a U-shaped backboard; the core data monitoring system comprises an MM440 frequency converter (3) and a man-machine exchange touch screen (5), the output end of the MM440 frequency converter (3) is connected with the control end of the high-speed motor (1), meanwhile, the MM440 frequency converter (3) is connected with the CPU module (6) through profibus two-way communication, the man-machine exchange touch screen (5) is also connected with the CPU module (6) through profibus two-way communication, the output end of the MM440 frequency converter (3) is also connected with a paperless recorder (2), the paperless recorder (2) outputs and displays a high-speed motor current data curve after receiving a signal of the MM440 frequency converter (3), the output end of the digital quantity output module (7) is connected with an acousto-optic alarm lamp (4), and the acousto-optic alarm lamp (4) sends out acousto-optic alarm after receiving the signal of the digital quantity output module (7) to remind a field person that the system monitors abnormity.

2. The current monitoring system based on the high-precision copper pipe drawing high-speed motor is characterized in that a program control method for controlling a core data monitoring system is preset in the CPU module (6), and the operation steps are as follows:

the method comprises the steps that the MM440 frequency converter (3) is used for collecting and recording running current data of the high-speed motor (1) in real time, the MM440 frequency converter (3) sends the collected current data to the CPU module (6), the CPU module (6) is used for reading signals in the MM440 frequency converter (3), storing the data used for recording the actual current of the high-speed motor (1) in an internal variable DB12.DBW4, and storing the data in an intermediate variable MD70 after processing and calculation; meanwhile, an operator inputs required high-speed motor current alarm upper and lower limit values in a man-machine switching touch screen (5) according to different specifications of field production products, and the corresponding upper and lower limit current values are respectively stored in an intermediate variable MD74 and an intermediate variable MD 66;

the current value of the high-speed motor (1) acquired by the MM440 frequency converter (3) in real time is transmitted to the paperless recorder (2), and the paperless recorder (2) outputs and displays the running current data curve of the high-speed motor (1) in real time after receiving the signal of the MM440 frequency converter (3);

The CPU module (6) reads the value of the intermediate variable MD70, and then compares the value with the values of the intermediate variable MD74 and the intermediate variable MD66 in the storage area at the same time to judge:

when the value of the intermediate variable MD70 is greater than the value of the intermediate variable MD74 or the value of the intermediate variable MD70 is less than the value of the intermediate variable MD66, the digital quantity output module (7) outputs a 24V direct-current voltage signal to control the acousto-optic alarm lamp (4) to work, namely, acousto-optic alarm is carried out;

when the value in the intermediate variable MD70 is larger than the value of the intermediate variable MD66 and smaller than the value of the intermediate variable MD74, the running current value of the high-speed motor is in a proper interval, the unqualified probability of the produced product is almost 0, and at the moment, the digital quantity output module (7) does not output a signal, and the acousto-optic alarm lamp (4) stops working.

3. A high precision copper tube drawing high speed motor based current monitoring system as claimed in claim 2, characterized in that said CPU module (6) model number is 6ES7313-6CF03-0AB 0.

4. The current monitoring system based on the high-precision copper tube drawing high-speed motor is characterized in that the digital quantity output module (7) is 6ES7322-1BH01-0AA 0.

5. A high accuracy copper pipe drawing high speed motor based current monitoring system as claimed in claim 4, wherein the model of man machine exchange touch screen (5) is 6AV6647-0AC11-3AX 0.

Technical Field

The invention relates to a core data monitoring application technology of equipment in a copper pipe machining process, in particular to a current monitoring system based on a high-precision copper pipe drawing high-speed motor, and belongs to the technical field of copper pipe machining.

Background

In the production process of the internally threaded copper pipe, in order to ensure that the produced product is continuously qualified, the spinning processing of the copper pipe needs to be realized by using a specific core head, a mold and a high-speed motor with a specific rotating speed value in the production process of the copper pipe, otherwise, the produced product becomes an unqualified product, and causes no small loss to a company, therefore, the current value of the high-speed motor which can reflect the core parameter whether the product is qualified or not in the copper tube production process can realize the flexible setting of the qualified monitoring range value and the online real-time reading processing according to the different specifications of the produced threaded copper tube products, thereby achieving the effect of audible and visual alarm reminding output when the monitored current value of the high-speed motor exceeds the set qualified monitoring range, meanwhile, the real value curve is recorded in real time so as to carry out retrospective query on data according to needs at a later stage, but the current production line lacks a corresponding special system and equipment.

Disclosure of Invention

Aiming at the defects in the prior art, the invention mainly aims to solve the problem that unqualified products are possibly produced due to the change of various factors of the processing environment during the processing of the copper pipe with internal threads in the prior art without being watched by people, and provides a current monitoring system based on a high-precision copper pipe drawing high-speed motor, which can timely find and quickly alarm.

The technical scheme of the invention is as follows: a current monitoring system based on a high-precision copper pipe drawing high-speed motor comprises the high-speed motor arranged on a drawing production line, wherein the front end of the high-speed motor is connected with a spinning ring and is matched with a core print and a die to process a copper pipe; the drawing production line is characterized in that a PLC programmable control mechanism and a core data monitoring system arranged at the middle section of the drawing production line are also arranged on the drawing production line; the PLC takes a CPU module as a control core, and simultaneously combines and uses a digital output module, and the CPU module is connected with the digital output module through a U-shaped backboard; the core data monitoring system comprises a MM440 frequency converter and a man-machine exchange touch screen, wherein the output end of the MM440 frequency converter is connected with the control end of a high-speed motor, the MM440 frequency converter is connected with a CPU module through profibus two-way communication, the man-machine exchange touch screen is also connected with the CPU module through profibus two-way communication, the output end of the MM440 frequency converter is further connected with a paperless recorder, the paperless recorder outputs and displays a high-speed motor current data curve after receiving a signal of the MM440 frequency converter, an acousto-optic alarm lamp is connected to the output end of a digital quantity output module, and the acousto-optic alarm lamp sends out acousto-optic alarm after receiving the signal of the digital quantity output module to remind a field worker of monitoring the abnormality of the system.

In the invention, a program control method for controlling a core data monitoring system is preset in the CPU module, and the operation steps are as follows:

1) the method comprises the steps that the MM440 frequency converter is used for collecting and recording running current data of the high-speed motor in real time, the MM440 frequency converter sends the collected current data to a CPU module, and the CPU module is used for storing the data for recording the actual current of the high-speed motor in an internal variable DB12.DBW4 by reading signals in the MM440 frequency converter, processing and calculating the data and storing the data in an intermediate variable MD 70; meanwhile, an operator inputs required high-speed motor current alarm upper and lower limit values in a man-machine exchange touch screen according to different specifications of field production products, and the corresponding upper and lower limit current values are respectively stored in an intermediate variable MD74 and an intermediate variable MD 66;

2) the current value of the high-speed motor is collected by the MM440 frequency converter in real time and transmitted to the paperless recorder, and the paperless recorder outputs and displays the running current data curve of the high-speed motor in real time after receiving the signal of the MM440 frequency converter;

3) the CPU module reads the value of the intermediate variable MD70 and then compares the value with the values of the intermediate variable MD74 and the intermediate variable MD66 in the storage area at the same time to judge:

When the value of the intermediate variable MD70 is greater than the value of the intermediate variable MD74 or the value of the intermediate variable MD70 is less than the value of the intermediate variable MD66, the digital quantity output module outputs a 24V direct-current voltage signal to control the acousto-optic alarm lamp to work, namely, acousto-optic alarm is carried out;

when the value in the intermediate variable MD70 is larger than the value of the intermediate variable MD66 and smaller than the value of the intermediate variable MD74, the running current value of the high-speed motor is in a proper interval, the disqualification probability of the produced product is almost 0, and at the moment, the digital quantity output module does not output signals, and the sound and light alarm lamp stops working.

In the invention, the paperless recorder and the audible and visual alarm are both existing devices, and are transferred to the system for use, and the paperless recorder can automatically generate a pressure curve display after receiving the signal of the MM440 frequency converter, so that an operator can conveniently check the pressure curve display; and audible and visual alarm can send out the warning and flash light suggestion simultaneously after receiving alarm signal, just so can remind operating personnel's product defect that produces the very first time. When the paperless recorder and the audible and visual alarm are installed, the circuit of the paperless recorder and the audible and visual alarm are connected and then placed at a visible position.

In the invention, the adopted U-shaped back plate is the existing control panel, the function of the U-shaped back plate is to connect the CPU module and the digital quantity output module and realize the data exchange in the U-shaped back plate, and because the basic data exchange belongs to the prior art, only the connection relation is explained here, and the principle of the data exchange is not described in detail.

Optimally, the model of the CPU module is 6ES7313-6CF03-0AB 0.

Optimally, the model of the digital quantity output module is 6ES7322-1BH01-0AA 0.

Optimally, the model of the man-machine interaction touch screen is 6AV6647-0AC11-3AX 0.

Compared with the prior art, the invention has the following beneficial effects:

1. the current monitoring system can realize automatic production, can automatically monitor the current of the high-speed motor of the core processing part of the internal thread copper pipe in real time, and compares the actual current value change of the high-speed motor with the qualified range value of the current of the high-speed motor input by the man-machine exchange touch screen, thereby ensuring the qualification of the internal thread copper pipe during continuous production under the unattended condition;

2. the leakage detection rate is high, the problem that the existing large-length internal thread copper pipe cannot be found by personnel in time when the internal thread copper pipe is unqualified in continuous production is solved, the leakage detection rate is high, and the high probability of batch scrapping of products is avoided;

3. because the whole production process of the internal thread copper pipe does not need to be attended by personnel and has higher reliability, a large amount of labor cost is saved, and the production cost of enterprises is favorably reduced.

Drawings

Fig. 1 is a schematic structural diagram of a current monitoring system based on a high-precision copper tube drawing high-speed motor.

In the figure, 1 is a high-speed motor, 2 is a paperless recorder, 3 is an MM440 frequency converter, 4 is an acousto-optic alarm lamp, 5 is a man-machine exchange touch screen, 6 is a CPU module, and 7 is a digital output module.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

As shown in fig. 1, the current monitoring system based on the high-precision copper pipe drawing high-speed motor comprises a PLC programmable control mechanism applied to a copper pipe production line and a core data monitoring system arranged in the middle of the production line, wherein the PLC programmable control mechanism takes a CPU module 6 as a control core and is combined with a digital output module 7; the CPU module 6 is connected with the digital output module 7 through a U-shaped back plate; the core data monitoring system comprises a high-speed motor 1, an MM440 frequency converter 3 and a man-machine exchange touch screen 5; the lower line of the MM440 frequency converter 3 is connected with the high-speed motor 1, and meanwhile, the MM440 frequency converter is connected with the CPU module 6 through profibus two-way communication, and the rotary pressing ring is connected to the front end of the high-speed motor 1 and is matched with the core head and the die to process the copper pipe; the man-machine exchange touch screen 5 is also connected with the CPU module 6 through profibus two-way communication, a paperless recorder 2 is connected to one end of the MM440 frequency converter 3 in the system, an acousto-optic alarm lamp 4 is connected to the rear end of the digital output module 7, and the paperless recorder 2 outputs and displays a high-speed motor current data curve after receiving a signal of the MM440 frequency converter 3. And the acousto-optic alarm lamp 4 sends out acousto-optic alarm after receiving the signal of the digital quantity output module 7, and reminds field personnel that the system monitors abnormity.

A core data monitoring system control program is preset in the CPU module 6, and the operation steps are as follows:

1) the method comprises the steps that the MM440 frequency converter 3 is used for collecting and recording running current data of the high-speed motor in real time, the MM440 frequency converter 3 sends the collected current data to the CPU module 6, the CPU module 6 is used for reading signals in the MM440 frequency converter 3, storing data for recording the actual current of the high-speed motor in a variable DB12.DBW4, and storing the data in an intermediate variable MD70 after processing and calculation; meanwhile, an operator inputs appropriate high-speed motor current alarm upper and lower limit values in the man-machine switching touch screen 5 according to different specifications of field production products, and the corresponding upper and lower limit current values are respectively stored in the intermediate variable MD74 and the intermediate variable MD 66.

2) The current value of the high-speed motor acquired by the MM440 frequency converter 3 in real time is transmitted to the paperless recorder 2, and the paperless recorder 2 outputs and displays a data curve of the running current of the high-speed motor in real time after receiving a signal of the MM440 frequency converter 3;

3) the CPU module 6 makes a judgment by reading the value of the intermediate variable MD70 simultaneously with the values in the memory areas MD74, MD 66:

when the value in the intermediate variable MD70 is greater than the intermediate variable MD74 or less than the intermediate variable MD66, the digital output module 7 outputs a 24V direct-current voltage signal to control the acousto-optic alarm lamp 4 to work, namely, to perform acousto-optic alarm;

When the value of the intermediate variable MD70 in the storage area is greater than the intermediate variable MD66 and less than the intermediate variable MD74, the running current value of the high-speed motor 1 is in a proper interval, the unqualified probability of the produced product is almost 0, and at the moment, the digital output module 7 does not output a signal, and the acousto-optic alarm lamp 4 stops working.

In the invention, the model of the CPU module 6 is 6ES7313-6CF03-0AB0, the model of the digital output module 7 is 6ES7322-1BH01-0AA0, and the model of the man-machine interaction touch screen 5 is 6AV 6647-0 AC11-3AX 0.

The invention can realize the on-line continuous automatic monitoring of the actual current of the high-speed motor processed and manufactured when the internal thread copper pipe is produced, and simultaneously realize the real-time collection and recording of the curve of the current value, thereby facilitating related personnel to trace the historical data and providing sufficient guarantee capability for the qualification of the produced products.

It should be noted that the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the applicant has described the invention in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions made on the technical solutions of the present invention can not be made within the spirit and scope of the technical solutions of the present invention and shall be covered by the claims of the present invention.