CN215823962U

CN215823962U - Uniform speed control system for uncoiling feeder

Info

Publication number: CN215823962U
Application number: CN202121453959.2U
Authority: CN
Inventors: 颜廷斌; 高波
Original assignee: SHANDONG XINHEYUAN HEAT TRANSFERRING TECHNOLOGY CO LTD
Current assignee: SHANDONG XINHEYUAN HEAT TRANSFERRING TECHNOLOGY CO LTD
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-02-15
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a uniform speed control system of an uncoiling feeder, which comprises a PLC controller, a position sensor, a touch screen and a frequency converter, wherein the PLC controller is respectively connected with the position sensor, the touch screen and the frequency converter, the position sensor comprises a limit sensor and a deviation detection sensor, the limit sensor is arranged between the uncoiling feeder and a punch press, for detecting the falling height of the material belt, a deviation sensor is arranged on the uncoiling feeder, the material belt passes through the path position, a frequency converter is connected with a motor of the uncoiling feeder, receive sensor data and controller converter through the PLC controller, realize the uncoiler at the uniform velocity operation, compare old-fashioned uncoiler mode of operation, stopped frequently opening of motor and stopped, reduced the damage of gearbox, practiced thrift the electric energy, reduce maintenance duration and cost of maintenance, more reduced the cost of product, strengthened the competitiveness of enterprise.

Description

Uniform speed control system for uncoiling feeder

Technical Field

The utility model relates to the technical field of aluminum strip uncoiling equipment, in particular to a constant-speed control system for an uncoiling feeder.

Background

Along with the sharp increase of automobile output in China, radiators need to be more and more, an uncoiling feeder mainly aims at the uncoiling of aluminum strip coil materials and conveys the aluminum strip materials to equipment of the next procedure at a constant speed, the traditional uncoiling feeder needs frequent starting and stopping, the working mode is difficult to deal with the problem that a large-volume continuous working uncoiler needs to be braked constantly in order to reduce the looseness of a material plate caused by rotating inertia, so that the material strip can be prevented from scratching the surface due to looseness, the load of a driving motor is increased at the same time, and the motor and a reduction gearbox which are started and stopped frequently are harmless and profitable; meanwhile, the brake of the uncoiler uses an iron sheet to wrap a driving shaft, and the driving motor can generate harsh noise when rotating, so that a large amount of noise pollution is generated.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a constant speed control system for an uncoiling feeder, which can effectively control the uncoiling feeder to keep a constant speed state.

In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

the utility model provides an at uniform velocity control system for uncoiling feeder, it includes PLC controller, position sensor, touch-sensitive screen, converter, the PLC controller is connected with position sensor, touch-sensitive screen, converter respectively, position sensor includes spacing sensor and off tracking detection sensor, and spacing sensor sets up and is being uncoiled between feeder and the punch press for detect the material area and hang down the height, and off tracking sensor sets up on uncoiling the feeder, and the material area is through the path position, and the converter is connected with the motor of uncoiling the feeder.

The PLC controller is also connected with an emergency stop switch, the emergency stop switch is arranged on a power supply path of the uncoiling feeder, the emergency stop switch controls a coil of a contactor, and the contactor is connected with a frequency converter power supply and a control power supply of the whole control cabinet, so that the safety of operators and equipment can be fully protected.

The PLC controller is also connected with a brake switch of the uncoiling feeder. The traditional braking mode is that the brake is constantly, and the brake is only used for preventing the brake due to the inertia rotation of a material disc when a motor stops.

The PLC controller is selected from fx3 u-48 mplc of Mitsubishi motor. The PLC is in communication connection with the frequency converter, and a Mitsubishi fx3 u-adp communication module is used.

The frequency converter for controlling the motor adopts a frequency converter of Taida vfd-m, the input end of the frequency converter is connected with a three-phase power supply, the output end of the frequency converter is connected with the motor, and the frequency converter is simultaneously connected with an adp module of a PLC controller and used for controlling the rotating speed of the motor in real time.

The touch screen adopts vinylon TK6071 IP. The control system has the advantages that the operation states of all control buttons except the emergency stop switch are arranged on the touch screen, so that control circuits are reduced, and the failure rate is reduced.

Furthermore, the limit sensor comprises an upper limit detection sensor, a middle limit detection sensor and a lower limit detection sensor, the lower limit detection sensor is arranged at the position of the falling arc of the material belt, and when the lower limit detection sensor detects the material belt, the motor of the uncoiling feeder is slightly fast and needs to be decelerated; the middle limit detection sensor and the upper limit detection sensor are arranged below a discharge port of the uncoiling feeder, the middle limit detection sensor and the upper limit detection sensor can be triggered in a straightening process by the falling of the material belt, when the speed of a motor is too low or the motor is stopped, the material belt is far away from the upper limit detection sensor at the uppermost end, and when the material belt is not detected, the PLC sends out an alarm signal to remind an operator of timely processing; the position of the middle limit detection sensor is just at the central point of the vertical falling motion of the material belt, when the material belt is higher than the middle limit detection sensor, the PLC controller controls the motor to reduce the point speed, and when the material belt is lower than the middle limit detection sensor, the PLC controller controls the motor to increase the point speed; when the material belt triggers the lower limit detection sensor when the speed of the motor is too high, the brake does not act under the condition of not exceeding 2 seconds, and the motor does not stop and only decelerates; when the time exceeds 2 seconds after, brake action, the motor is shut down, because at the uniform velocity regulation and control generally can not exceed 2 seconds, just begins to control converter reduce speed when lower limit detection sensor switches on the PLC controller, makes the ejection of compact and the punch press feeding of opening a book the feeder reach equilibrium once more.

Furthermore, the deviation sensor is arranged right above or below a material feeding path of the uncoiling feeder, and when the middle limit detection sensor of the later process detects that the material belt exists, the sensor cannot detect the material belt, and the PLC controller can alarm to prompt an operator that the material belt deviates or does not exist quickly.

The type of the limit sensor is a photoelectric sensor of e3z-t61-d, and the type of the deviation detection sensor is a photoelectric sensor of e3f-ds30c 4.

The utility model has the beneficial effects that: the uniform-speed uncoiling feeder needs a touch screen to set data, the PLC receives the data and processes the data, and finally the processed data is sent to the frequency converter through communication, so that the uniform-speed operation of the uncoiler is realized. Compared with the working mode of an old-fashioned uncoiler, the constant-speed uncoiling feeder avoids the frequent start and stop of the motor, reduces the damage of the gearbox, prolongs the service life of the gearbox, greatly saves the electric energy by using the frequency converter, reduces the maintenance time and the maintenance cost, further reduces the cost of the product, and enhances the competitiveness of enterprises.

Drawings

FIG. 1 is a schematic block diagram of the present invention;

fig. 2 is a PLC control circuit diagram.

Detailed Description

The uniform-speed control system for the uncoiling feeder comprises a PLC (programmable logic controller), a position sensor, a touch screen and a frequency converter, wherein the PLC is respectively connected with the position sensor, the touch screen and the frequency converter, the position sensor comprises a limit sensor and a deviation detection sensor, the limit sensor is arranged between the uncoiling feeder and a punch press and used for detecting the falling height of a material belt, the deviation sensor is arranged on the uncoiling feeder, the material belt passes through a path position, and the frequency converter is connected with a motor of the uncoiling feeder.

The operating frequency of a driving motor of the uncoiling feeder is set through a touch screen, a photoelectric switch can monitor the operating state of the uncoiling feeder in real time, detection signals are divided into upper limit signals, middle limit signals and lower limit signals, when the lower limit signals are frequently switched on and indicate that the speed is too high, a PLC (programmable logic controller) sends data results to a frequency converter through internal calculation, and the frequency converter receives the data sent by the PLC and operates at a speed reduction of 0.1 HZ/S; when the material belt is higher than the middle limit signal 15, the PLC controller transmits the result to the frequency converter through MDDBUS communication through internal calculation, and the frequency converter receives the fact that the PLC controller operates at the speed of 0.1 HZ/S; when the continuous speed increasing of the frequency converter cannot meet the production, the upper limit signal is triggered. The PLC controller outputs high-speed data to the frequency converter, and the frequency converter runs at a high speed of 1.0 HZ/0.5S. Through the coordination work of the functional blocks, the real-time data exchange and real-time adjustment between the PLC and the frequency converter, the running state of the driving motor reaches a supply and demand balance state, the running of the motor reaches a constant speed state, and the expected purpose is achieved.

The utility model has the advantages of reducing the maintenance time of the equipment, reducing the maintenance cost and the labor cost, changing the touch screen and the PLC control, easily realizing the online work with other equipment and realizing the automatic operation function of the equipment.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should be construed as the protection scope of the present invention without inventive effort.

Claims

1. The utility model provides an open a book feeder control system at uniform velocity which characterized in that: it includes PLC controller, position sensor, touch-sensitive screen, converter, and the PLC controller is connected with position sensor, touch-sensitive screen, converter respectively, and position sensor includes spacing sensor and off tracking detection sensor, and spacing sensor setting is being opened a book between feeder and the punch press for detect the material area and hang down the height, the off tracking sensor setting is on opening a book the feeder, and the material area is through the path position, and the converter is connected with the motor of opening a book the feeder.

2. The uniform speed control system for the uncoiling feeder according to claim 1, characterized in that: the PLC controller is also connected with an emergency stop switch, and the emergency stop switch is arranged on a power supply circuit of the uncoiling feeder.

3. The uniform speed control system for the uncoiling feeder according to claim 1, characterized in that: the PLC controller is also connected with a brake switch of the uncoiling feeder.

4. The uniform speed control system for the uncoiling feeder according to claim 1, characterized in that: the PLC controller is selected from fx3 u-48 mplc of Mitsubishi motor.

5. The uniform speed control system for the uncoiling feeder according to claim 1, characterized in that: the touch screen adopts vinylon TK6071 IP.

6. The uniform speed control system for the uncoiling feeder according to claim 1, characterized in that: the limit sensor comprises an upper limit detection sensor, a middle limit detection sensor and a lower limit detection sensor, and the lower limit detection sensor is arranged at the position of the falling arc of the material belt; the middle limit detection sensor and the upper limit detection sensor are arranged at the lower position of the discharge port of the uncoiling feeder.

7. The uniform speed control system for the uncoiling feeder according to claim 1, characterized in that: the deviation sensor is arranged right above or below a material feeding belt passing path of the uncoiling feeder.

8. The uniform speed control system for the uncoiling feeder according to claim 1, characterized in that: the type of the limit sensor is a photoelectric sensor of e3z-t61-d, and the type of the deviation detection sensor is a photoelectric sensor of e3f-ds30c 4.