Automatic control device of wire drawing machine

Abstract

The utility model discloses an automatic control device for a wire drawing machine, which comprises a main control board, three slave control boards, a touch screen and various function switches, the touch screen is connected with the main control board through 485 communication, the touch screen issues a production process to the main control board in a 485 communication mode, the main control board is respectively connected with the slave control boards through CAN (controller area network) buses, and the function switches are connected with the slave control boards through CAN buses. And the main control board issues the process parameters to each slave control board through a CAN bus protocol. In the wire drawing machine power part, a frequency converter controls a motor to rotate, the motor drives a speed reducer to rotate, and the speed reducer drives a wire drawing turntable to rotate through a belt. According to the automatic control device for the wire drawing machine, the wire drawing machine can be controlled, all stations can be linked, the breaking fault is prevented, and the running speed of the driving motor can be accurate and stable.

Description

Technical Field

[0001] The utility model relates to an automatic control device for a wire drawing machine, belonging to the technical field of wire drawing machine equipment. Background Art

[0002] With the widespread use of copper and steel wire in various industries, the demand for wire thickness and specifications is increasing, which has led to a large demand for wire drawing equipment that can draw thick wire into thin wire. However, the control method of existing wire drawing equipment has the following problems: 1. The power part of the wire drawing machine is driven by a motor to rotate the reducer, which in turn drives the wire drawing turntable through a belt. The operating speed of the motor has a significant impact on the quality of the wire drawing, but the motor speed control of existing equipment is not precise; 2. Generally, wire drawing machines have multiple drawing stations, and the existing equipment is not convenient to coordinate the speed and movement of each station. Utility Model Content

[0003] The purpose of the utility model is to provide an automatic control device for a wire drawing machine, which can control the wire drawing machine safely, efficiently and conveniently, can connect the entire process in series, can link the various workstations to prevent wire drawing failures, and can drive the motor to operate at an accurate and stable speed.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An automatic control device for a wire drawing machine, comprising: a main control panel, a 1# slave control panel, a 2# slave control panel, a 3# slave control panel, a 1# frequency converter, a 2# frequency converter, a 3# frequency converter, a touch screen, a start switch, a stop switch, a fault reset, an acceleration switch, a deceleration switch, a meter reset switch, an emergency stop switch, a 1# rear-link switch, a 1# positive inching, a 1# reverse inching, a 1# start switch, a 1# stop switch, a 1# brake coil, a 2# front-link switch, a 2# rear-link switch, a 2# positive inching, a 2# reverse inching, a 2# start switch, a 2# Stop switch, 2# station swing arm sensor, 2# brake coil, 3# front link switch, 3# rear link switch, 3# positive inching, 3# reverse inching, 3# start switch, 3# stop switch, 3# station swing arm sensor, 3# brake coil; the touch screen is connected to the main control board via 485 communication, the main control board is respectively connected to the 1# slave control board, 2# slave control board, and 3# slave control board via CAN bus, 1# inverter, 2# inverter, and 3# inverter are respectively connected to the CAN bus, 1# inverter and 2# inverter , 3# frequency converters control 1# motor, 2# motor and 3# motor respectively. The start switch, stop switch, fault reset, acceleration switch, deceleration switch, meter reset switch and emergency stop switch are connected to the signal input end of the main control board respectively. The 1# rear-link switch, 1# positive inching, 1# reverse inching, 1# start switch and 1# stop switch are connected to the input end of the 1# slave control board respectively. The 1# brake coil is connected to the output end of the 1# slave control board. The 2# front-link switch, 2# rear-link switch, 2# positive inching, 2# reverse inching The 2# front-link switch, 3# rear-link switch, 3# forward inching, 3# reverse inching, 3# start switch, and 3# stop switch are respectively connected to the 3# slave control board input terminal, the 3# station swing arm sensor is connected to the 3# slave control board analog input terminal, and the 3# brake coil is connected to the 3# slave control board output terminal. The 3# front-link switch, 3# rear-link switch, 3# forward inching, 3# reverse inching, 3# start switch, and 3# stop switch are respectively connected to the 3# slave control board input terminal, the 3# station swing arm sensor is connected to the 3# slave control board analog input terminal, and the 3# brake coil is connected to the 3# slave control board output terminal.

[0006] The purpose of this utility model can be further achieved by the following technical measures:

[0007] The aforementioned automatic control device for a wire drawing machine, wherein the main control board model is Orei EWC200-A; the sub-control board model is Orei EWC200-B; the inverter model is Orei E2000-W0300T3; the pendulum sensor model is Turck NI25-CK40-LIU-H1141; and the touch screen model is Kunlun Tongtai TPC1531Ni.

[0008] Compared with the existing technology, the beneficial effects of the present invention are: by using frequency converter technology to control the motor speed of the three workstations, the wire drawing forward speed can be accurately controlled to meet the process requirements; through the control coordination of the main control board and each sub-control board, the workstations can be linked to prevent breaking failures, and front and rear function buttons are provided to facilitate operation by staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is the basic structure diagram of the wire drawing machine;

[0010] Figure 2 This is the electrical wiring diagram of the main control board of the wire drawing machine;

[0011] Figure 3 This is the electrical wiring diagram of the 1# slave control panel of the wire drawing machine;

[0012] Figure 4 This is the electrical wiring diagram of the 2# slave control panel of the wire drawing machine;

[0013] Figure 5 This is the electrical wiring diagram of the 3# slave control panel of the wire drawing machine;

[0014] Figure 6 This is the wiring diagram of the inverter controlling the motor. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 1 As shown, the basic structure of the wire drawing machine of the present invention is as follows: it is divided into three wire drawing stations, the steel wire passes through the 1# wire drawing head from the first station, enters the 2# wire drawing head under the rotation of the 1# roller, enters the 3# wire drawing head under the rotation of the 2# roller, and continues to move forward under the rotation of the 3# roller. The steel wire is gradually drawn thinner by the 1# drawing head, the 2# drawing head, and the 3# drawing head. Each station is equipped with a frequency converter, a motor, a reducer, and a roller. The frequency converter drives the motor, the motor drives the reducer, and the reducer drives the roller to rotate through a belt.

[0017] like Figure 2 、 3As shown in Figures 4, 5 and 6, the automatic control device of the wire drawing machine of the present invention includes: a main control board, a 1# slave control board, a 2# slave control board, a 3# slave control board, a touch screen, a start switch, a stop switch, a fault reset, an acceleration switch, a deceleration switch, a meter reset switch, an emergency stop switch, a 1# rear-link switch, a 1# positive inching, a 1# reverse inching, a 1# start switch, a 1# stop switch, a 1# brake coil, a 2# brake coil, a 2# brake coil, a 2# front-link switch, a 2# rear-link switch, a 2# positive inching, a 2# reverse inching, a 2# start switch, a 2# stop switch, a 2# station swing arm sensor, a 3# front-link switch, a 3# rear-link switch, a 3# positive inching, a 3# reverse inching, a 3# start switch, a 3# stop switch and a 3# station swing arm sensor; the touch screen is connected to the main control board via 485 communication to send the process parameters to the main control board.

[0018] The master control board is connected to slave control boards #1, #2, and #3 via the CAN bus. The master control board transmits process parameters to each slave control board via the CAN bus protocol. Frequency converters #1, #2, and #3 are connected to the CAN bus. Slave control boards #1, #2, and #3 control frequency converters #1, #2, and #3, respectively. These control motors #1, #2, and #3, respectively, control the operation of motors #1, #2, and #3.

[0019] The start switch, stop switch, fault reset, acceleration switch, deceleration switch, meter reset switch, and emergency stop switch are respectively connected to the signal input end of the main control board, the 1# rear-link switch, 1# forward inching, 1# reverse inching, 1# start switch, and 1# stop switch are respectively connected to the input end of the 1# slave control board, the 1# brake coil is connected to the output end of the 1# slave control board, the 2# brake coil is connected to the output end of the 2# slave control board, and the 3# brake coil is connected to the output end of the 3# slave control board. The 2# front-link switch, 2# rear-link switch, 2# forward inching, 2# reverse inching, 2# start switch, and 2# stop switch are respectively connected to the 2# slave control board input end, and the 2# station swing arm sensor is connected to the 2# slave control board analog input end. The 3# front-link switch, 3# rear-link switch, 3# forward inching, 3# reverse inching, 3# start switch, and 3# stop switch are respectively connected to the 3# slave control board input end, and the 3# station swing arm sensor is connected to the 3# slave control board analog input end.

[0020] The main control board model of the automatic control device of the wire drawing machine of the utility model is Orui EWC200-A; the sub-control board model is Orui EWC200-B; the inverter model is Orui E2000-W0300T3; the pendulum sensor model is Turck NI25-CK40-LIU-H1141; and the touch screen model is Kunlun Tongtai TPC1531Ni.

[0021] The automatic control function and operation process of this utility model are as follows:

[0022] (1) Since the diameter and speed ratio of the wire drawing head at each station are different, it is necessary to calculate the corresponding motor power frequency (50Hz) linear speed. Power frequency linear speed = motor rated speed * drum circumference / transmission ratio. The unit is meter per minute;

[0023] (2) The touch screen sends the parameters to the main control board through the 485 communication protocol, and the main control board sends the parameters to each slave control board through the CAN bus protocol;

[0024] (3) Press the start switch or stop switch set on the main control panel or the slave control panel, and the system will start or stop automatically;

[0025] (4) Acceleration: The main control board is equipped with an acceleration switch to control the increase of motor speed according to production conditions;

[0026] (5) Deceleration: The main control board is equipped with a deceleration switch to control the motor speed reduction according to production conditions;

[0027] (6) Meter reset function: according to the needs of production statistics, press the meter reset switch to reset the production length (in meters) calculated by the motor speed last time;

[0028] (7) Each slave control board controls the operation of the corresponding frequency converter to ensure that the linear speed of each workstation is consistent. Before the frequency converter is running, the slave control board controls the motor brake solenoid valve coil to be energized, the brake is released, and the motor runs. When the motor stops, the solenoid valve loses power and the brake is tightened;

[0029] (8) During the operation of the equipment, the linear speed of the motors at each station will not be constant, which may easily cause the steel wire to break. Therefore, it is necessary to correct the operating speed of the frequency converter to reduce the fluctuation of the linear speed. This equipment is equipped with a pendulum sensor at the 2# and 3# stations. The steel wire presses the sensor pendulum during transmission. The sensor converts the displacement of the pendulum after the force is applied to it into a voltage signal and transmits it to the slave control board. The control board obtains the linear speed of the steel wire based on the voltage signal and then automatically adjusts the frequency converter.

[0030] Manual function:

[0031] (1) Forward jog: Each slave control board can control the manual forward jog of the corresponding motor;

[0032] (2) Reverse jog: Each slave control board can control the manual reverse jog of the corresponding motor;

[0033] (3) Emergency stop: All motors stop working;

[0034] (4) Startup: The entire system starts automatically;

[0035] (5) Stop: The entire system shuts down;

[0036] (6) Front-link function: When the operator is threading the wire at a certain station, the motors of the stations before and after the operator need to rotate synchronously. Therefore, the front-link function and the rear-link function are set. When the front-link switch of a station is pressed, the motor of the station before it will start to run together with the motor of the current station. When the rear-link switch is pressed, the motor of the station after it will start to run together with the motor of the current station.

[0037] In addition to the above embodiments, the present invention may also have other implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. A wire drawing machine automatic control device, characterized in that , including: main control board, 1# slave control board, 2# slave control board, 3# slave control board, 1# inverter, 2# inverter, 3# inverter, touch screen, start switch, stop switch, fault reset, acceleration switch, deceleration switch, meter reset switch, emergency stop switch, 1# rear connection switch, 1# positive inching, 1# reverse inching, 1# start switch, 1# stop switch, 1# brake coil, 2# front connection switch, 2# rear connection switch, 2# positive inching, 2# reverse inching, 2# start switch, 2# stop switch, 2# working The touch screen is connected to the main control board via 485 communication, and the main control board is connected to the 1# slave control board, the 2# slave control board, and the 3# slave control board via CAN bus. The 1# inverter, the 2# inverter, and the 3# inverter are connected to the CAN bus respectively. The 1# inverter, the 2# inverter, and the 3# inverter are connected to the CAN bus respectively. Control 1# motor, 2# motor and 3# motor respectively. The start switch, stop switch, fault reset, acceleration switch, deceleration switch, meter reset switch and emergency stop switch are connected to the signal input end of the main control board respectively. The 1# rear-link switch, 1# positive inching, 1# reverse inching, 1# start switch and 1# stop switch are connected to the input end of 1# slave control board respectively. The 1# brake coil is connected to the output end of 1# slave control board. The 2# front-link switch, 2# rear-link switch, 2# positive inching, 2# reverse inching and 2# The # start switch and the 2# stop switch are respectively connected to the 2# slave control board input end, the 2# workstation swing arm sensor is connected to the 2# slave control board analog input end, and the 2# brake coil is connected to the 2# slave control board output end; the 3# front-link switch, 3# rear-link switch, 3# forward inching, 3# reverse inching, 3# start switch, and 3# stop switch are respectively connected to the 3# slave control board input end, the 3# workstation swing arm sensor is connected to the 3# slave control board analog input end, and the 3# brake coil is connected to the 3# slave control board output end.

2. The automatic control device for a wire drawing machine according to claim 1, characterized in that: The main control board model is Orei EWC200-A; the sub-control board model is Orei EWC200-B; the inverter model is Orei E2000-W0300T3; the pendulum sensor model is Turck NI25-CK40-LIU-H1141; and the touch screen model is Kunlun Tongtai TPC1531Ni.

Images