Continuous feeding system for aluminum alloy coiled materials

Abstract

The invention discloses an aluminum alloy coiled material continuous feeding system which comprises an unwinding machine, a deviation rectifying feeding machine, a detection module, a differential compensation module and a numerical control module, the detection module is used for monitoring the running conveying speed of the deviation rectifying feeding machine and the tension of an aluminum alloy coiled material on the unwinding machine in real time; and the differential calculation compensation module is used for calculating the speed difference value of the aluminum alloy coiled material conveyed by the unreeling machine based on a PID algorithm according to the running conveying speed of the deviation correction feeding machine and the tension of the aluminum alloy coiled material on the unreeling machine, which are monitored in real time. According to the aluminum alloy coiled material continuous feeding system, the speed difference and tension fluctuation can be coordinated, the operation conveying speed of the deviation rectifying feeding machine serves as a main control variable, the aluminum alloy coiled material conveying speed of the unwinding machine is followed in real time, the aluminum alloy coiled material conveying speed of the unwinding machine is dynamically adjusted, it is ensured that the aluminum alloy coiled material is stably conveyed, and the production efficiency is improved. The aluminum alloy coiled material is prevented from being stacked, loosened, stretched and bent on the unreeling machine, and accurate synchronization of the two is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal coil conveying, and particularly relates to a continuous feeding system for aluminum alloy coils. Background Art

[0002] The conveying system is an essential and important part in the automated processing of aluminum alloy coils. Through uncoiling, straightening, and stable conveying, the metal sheet is conveyed to the cutting process without deformation, and combined with numerical control servo shearing, it is processed into sheets or strips of customized sizes, achieving efficient and non-deformed cutting, and is widely used in the production of automotive parts, electronic device casings, and building decorative plates;

[0003] However, in the traditional aluminum alloy coil feeding system, the uncoiler and the deviation rectifying feeder are usually independently controlled, and it is easy for the uncoiler and the deviation rectifying feeder to have inconsistent conveying speeds, which will cause the aluminum alloy coil to accumulate and slacken, stretch and deform on the uncoiler, and cannot meet the production requirements of high-speed continuous processing. Therefore, those skilled in the art have provided a continuous feeding system for aluminum alloy coils to solve the problems raised in the above background art. Summary of the Invention

[0004] The purpose of the present invention is to provide a continuous feeding system for aluminum alloy coils to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A continuous feeding system for aluminum alloy coils includes: an uncoiler, a deviation rectifying feeder, a detection module, a differential speed compensation module, and a numerical control module. Among them, the detection module is used to monitor the running and conveying speed of the deviation rectifying feeder and the tension of the aluminum alloy coil on the uncoiler in real time; the differential speed calculation and compensation module calculates the speed difference of the aluminum alloy coil conveyed by the uncoiler based on the PID algorithm according to the running and conveying speed of the deviation rectifying feeder and the tension of the aluminum alloy coil on the uncoiler monitored in real time, and generates a differential speed compensation instruction, and feeds the differential speed compensation instruction back to the numerical control module; the numerical control module adjusts the running speed of the servo motor on the uncoiler according to the speed difference of the aluminum alloy coil conveyed by the uncoiler, so that the speed of the aluminum alloy coil conveyed by the uncoiler is consistent with the running and conveying speed of the deviation rectifying feeder, preventing the aluminum alloy coil from slacking and bending on the uncoiler.

[0007] Preferably, the detection module includes a tension detection unit and a speed detection unit. Among them, the tension detection unit is used to monitor the tension of the aluminum alloy coil on the uncoiler in real time; the speed detection unit is used to monitor the running and conveying speed of the deviation rectifying feeder in real time; the detection module uploads the data of the tension of the aluminum alloy coil on the uncoiler and the running and conveying speed of the deviation rectifying feeder monitored in real time to the differential speed calculation and compensation module for differential speed calculation and compensation by the differential speed calculation and compensation module.

[0008] Preferably, the differential compensation module includes a differential calculation unit and a compensation calculation unit. The differential calculation unit is used to calculate the speed difference of the aluminum alloy coil transported by the unwinder. The compensation calculation unit calculates the transport speed of the unwinder according to the speed difference of the aluminum alloy coil transported by the unwinder, generates a differential compensation instruction, and feeds the differential compensation instruction back to the numerical control module.

[0009] Preferably, the numerical control module includes a control unit and a data storage unit. The control unit receives the compensation instruction and controls the operation of the unwinder according to the compensation instruction to adjust the transport speed of the unwinder. The data storage unit is used to record and store the operation data of the unwinder and the deviation rectifying and feeding machine, and upload the operation data of the unwinder and the deviation rectifying and feeding machine to the host computer for display and storage.

[0010] Preferably, the tension detection unit includes a tension sensor. The tension sensor is arranged between the unwinder and the deviation rectifying and feeding machine and is used to detect the tension value of the aluminum alloy coil in real time.

[0011] Preferably, the speed detection unit includes a speed sensor. The speed sensor is arranged on the deviation rectifying and feeding machine and is used to monitor the operation and transport speed of the deviation rectifying and feeding machine in real time.

[0012] Preferably, a deviation rectifying mechanism is arranged on the deviation rectifying and feeding machine. The deviation rectifying mechanism includes a visual detection component and a photoelectric sensor. The visual detection component is used to detect the edge deviation of the aluminum alloy coil, generate a deviation rectifying signal of the aluminum alloy coil, and feed the deviation rectifying signal of the aluminum alloy coil back to the numerical control module. The photoelectric sensor is used to detect the position of the aluminum alloy coil, calculate the transport length of the aluminum alloy coil, and realize the fixed-length transport of the aluminum alloy coil.

[0013] Preferably, the system further includes an early warning module. The early warning module sends an emergency control signal to the numerical control module based on a preset tension range threshold and speed difference threshold, and gives an early warning to the staff through an audible and visual alarm.

[0014] Preferably, the tension range threshold of the aluminum alloy coil is 50 - 200 N, and the speed difference threshold of the unwinder is ±5%.

[0015] Compared with the prior art, the advantages of the present invention are as follows: The system monitors in real time the running and conveying speed of the deviation-correcting loading machine and the tension of the aluminum alloy coil on the uncoiler. The PID algorithm is used to coordinate the speed difference and tension fluctuation of the aluminum alloy coil conveyed by the uncoiler. Taking the running and conveying speed of the deviation-correcting loading machine as the main control variable, the speed of the aluminum alloy coil conveyed by the uncoiler follows in real time, dynamically adjusting the speed of the aluminum alloy coil conveyed by the uncoiler to ensure the smooth conveyance of the aluminum alloy coil, preventing the aluminum alloy coil from accumulating and loosening, stretching and bending on the uncoiler, achieving precise synchronization between the two, and meeting the production requirements of high-speed continuous processing of aluminum alloy coils. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a structural block diagram of an aluminum alloy coil continuous loading system according to an embodiment of the present invention;

[0017] Figure 2 FIG. is a schematic diagram of the process flow of continuous loading of aluminum alloy coils in the prior art. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In the description of the present invention, it should be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more. In addition, the term "comprising" and any variation thereof are intended to cover non-exclusive inclusion.

[0019] Combined with Figure 1 and Figure 2As shown in the figure, an aluminum alloy coil continuous feeding system includes: an unwinder, a deviation rectifying feeder, a detection module, a differential speed compensation module and a numerical control module; the system monitors the running and conveying speed of the deviation rectifying feeder and the tension of the aluminum alloy coil on the unwinder in real time based on a speed detection unit and a tension detection unit; a differential speed calculation unit calculates the speed difference of the aluminum alloy coil conveyed by the unwinder based on the PID algorithm according to the running and conveying speed of the deviation rectifying feeder and the tension of the aluminum alloy coil on the unwinder in real time, generates a differential speed compensation instruction, and feeds the differential speed compensation instruction back to the numerical control module; the numerical control module adjusts the running speed of the servo motor on the unwinder according to the speed difference of the aluminum alloy coil conveyed by the unwinder, so that the speed of the aluminum alloy coil conveyed by the unwinder is consistent with the running and conveying speed of the deviation rectifying feeder, ensuring the smooth conveyance of the aluminum alloy coil, preventing the aluminum alloy coil from accumulating and slackening, stretching and bending on the unwinder, realizing the precise synchronization of the two, and meeting the production requirements of high-speed continuous processing of aluminum alloy coils.

[0020] In one embodiment, the detection module includes a tension detection unit and a speed detection unit. Among them, the tension detection unit includes a tension sensor, and the tension sensor is arranged between the unwinder and the deviation rectifying feeder for detecting the tension value of the aluminum alloy coil in real time; the speed detection unit includes a speed sensor, and the speed sensor is arranged on the deviation rectifying feeder for monitoring the running and conveying speed of the deviation rectifying feeder in real time; it provides a data basis for the system to calculate the speed difference of the aluminum alloy coil conveyed by the unwinder.

[0021] In one embodiment, the differential speed compensation module includes a differential speed calculation unit and a compensation calculation unit. Among them, the differential speed calculation unit calculates the speed difference of the aluminum alloy coil conveyed by the unwinder based on the PID algorithm; the compensation calculation unit calculates the conveying speed of the unwinder according to the speed difference of the aluminum alloy coil conveyed by the unwinder, generates a differential speed compensation instruction for the calculated conveying speed of the unwinder, and feeds the differential speed compensation instruction back to the numerical control module.

[0022] In one embodiment, the numerical control module includes a control unit and a data storage unit. The system receives the compensation instruction sent by the compensation calculation unit based on the control unit and controls the running speed of the servo motor on the unwinder according to the compensation instruction, dynamically adjusting the conveying speed of the unwinder to ensure the smooth conveyance of the aluminum alloy coil on the unwinder; the system uses the data storage unit to record and store the running data of the unwinder and the deviation rectifying feeder, forms a system operation log, and uploads the system operation log to the host computer for display and storage for the staff to view.

[0023] In one embodiment, the vision detection component is used to detect the edge deviation of the aluminum alloy coil, generate a deviation correction signal for the aluminum alloy coil, and feedback the deviation correction signal of the aluminum alloy coil to the numerical control module; the system is based on the position of the aluminum alloy coil photographed by the vision detection component, and based on the image recognition algorithm, checks whether the edge of the aluminum alloy coil deviates, and feeds the edge deviation data of the aluminum alloy coil to the numerical control module. The control unit drives the deviation correction mechanism to work to correct the position of the aluminum alloy coil, realizing the deviation correction and feeding of the aluminum alloy coil.

[0024] In one embodiment, the photoelectric sensor is used to detect the position of the aluminum alloy coil, calculate the conveying length of the aluminum alloy coil, and realize the fixed-length conveying of the aluminum alloy coil; the system is based on the photoelectric sensor to monitor the position and conveying length of the aluminum alloy coil in real time, calculate the length of the aluminum alloy coil entering the shearing machine, and control the deviation correction feeder to stop feeding according to the length of the aluminum alloy coil entering the shearing machine, preventing the aluminum alloy coil from colliding with the shearing tool on the shearing machine, and realizing the fixed-length conveying and cutting of the aluminum alloy coil.

[0025] In one embodiment, the system further includes an early warning module. The early warning module sends an emergency control signal to the numerical control module based on the preset tension range threshold and speed difference threshold, and gives an early warning to the staff through an audible and visual alarm; the early warning module is based on the running conveying speed of the deviation correction feeder and the tension value of the aluminum alloy coil monitored by the speed sensor and the tension sensor in real time, compares the preset tension range threshold and speed difference threshold in the data storage unit, and confirms whether the tension of the aluminum alloy coil exceeds the tension range threshold of 50 - 200 N, and whether the speed difference of the unwind reel conveying the aluminum alloy coil exceeds the speed difference threshold of ±5%. If the threshold is exceeded, the early warning module sends an emergency control signal to the numerical control module to reduce the running conveying speed of the deviation correction feeder and the speed of the unwind reel conveying the aluminum alloy coil, and gives an early warning to the staff through an audible and visual alarm, playing the role of emergency control of the system and warning the staff.

[0026] The continuous feeding system for aluminum alloy coils proposed by the present invention monitors the running conveying speed of the deviation correction feeder and the tension of the aluminum alloy coil on the unwind reel in real time. Based on the real-time monitored running conveying speed of the deviation correction feeder and the tension data of the aluminum alloy coil on the unwind reel, the PID algorithm is used to calculate the speed difference of the unwind reel conveying the aluminum alloy coil, and coordinates the speed difference of the unwind reel conveying the aluminum alloy coil and the tension fluctuation. Taking the running conveying speed of the deviation correction feeder as the main control variable, the speed of the unwind reel conveying the aluminum alloy coil follows in real time, dynamically adjusts the speed of the unwind reel conveying the aluminum alloy coil, ensures the smooth conveying of the aluminum alloy coil, prevents the aluminum alloy coil from accumulating and loosening, stretching and bending on the unwind reel, realizes the precise synchronization of the two, and meets the production requirements of high-speed continuous processing of aluminum alloy coils.

[0027] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A continuous feeding system for aluminum alloy coils, characterized in that: include: An unwinder, a deflection-correcting feeder, a detection module, a differential compensation module and a numerical control module, wherein the detection module is used to monitor the running conveying speed of the deflection-correcting feeder and the tension of the aluminum alloy coil on the unwinder in real time; the differential calculation compensation module calculates the speed difference of the unwinder conveying the aluminum alloy coil based on the PID algorithm according to the running conveying speed of the deflection-correcting feeder and the tension of the aluminum alloy coil on the unwinder monitored in real time, generates a differential compensation instruction, and feeds the differential compensation instruction back to the numerical control module; The numerical control module adjusts the running speed of the servo motor on the unwinder according to the speed difference of the unwinder conveying the aluminum alloy coil, so that the speed of the unwinder conveying the aluminum alloy coil is consistent with the running conveying speed of the deviation correction feeder, thereby preventing the aluminum alloy coil from loosening and bending on the unwinder.

2. The aluminum alloy coil continuous feeding system according to claim 1, characterized in that: The detection module includes a tension detection unit and a speed detection unit, wherein the tension detection unit is used to monitor the tension of the aluminum alloy coil on the unwinder in real time; the speed detection unit is used to monitor the running and conveying speed of the correcting feeder in real time; the detection module uploads the real-time monitored tension of the aluminum alloy coil on the unwinder and the running and conveying speed data of the correcting feeder to the differential calculation and compensation module, which is used for differential calculation and compensation of the differential calculation and compensation module.

3. The aluminum alloy coil continuous feeding system according to claim 1, characterized in that: The differential compensation module includes a differential calculation unit and a compensation calculation unit, wherein the differential calculation unit is used to calculate the speed difference of the unwinder conveying the aluminum alloy coil; the compensation calculation unit calculates the conveying speed of the unwinder according to the speed difference of the unwinder conveying the aluminum alloy coil, generates a differential compensation instruction, and feeds the differential compensation instruction back to the CNC module.

4. The aluminum alloy coil continuous feeding system according to claim 3, characterized in that: The CNC module includes a control unit and a data storage unit. The control unit receives compensation instructions, controls the operation of the unwinder according to the compensation instructions, and adjusts the conveying speed of the unwinder. The data storage unit is used to record and store the operating data of the unwinder and the deflection correction loader, and upload the operating data of the unwinder and the deflection correction loader to the host computer for display and storage.

5. The aluminum alloy coil continuous feeding system according to claim 2, characterized in that: The tension detection unit comprises a tension sensor, which is arranged between the unwinding machine and the deviation correction feeder and is used for detecting the tension value of the aluminum alloy coil in real time.

6. The aluminum alloy coil continuous feeding system according to claim 2, characterized in that: The speed detection unit comprises a speed sensor, which is arranged on the deviation-correcting feeder and is used for monitoring the running and conveying speed of the deviation-correcting feeder in real time.

7. The aluminum alloy coil continuous feeding system according to claim 1, characterized in that: The deflection correction loader is provided with a deflection correction mechanism, which includes a visual detection component and a photoelectric sensor, wherein the visual detection component is used to detect the edge deviation of the aluminum alloy coil and generate a deflection correction signal of the aluminum alloy coil, and feed the deflection correction signal of the aluminum alloy coil back to the numerical control module; the photoelectric sensor is used to detect the position of the aluminum alloy coil, calculate the conveying length of the aluminum alloy coil, and realize the fixed-length conveying of the aluminum alloy coil.

8. The aluminum alloy coil continuous feeding system according to claim 1, characterized in that: The system also includes an early warning module, which sends an emergency control signal to the numerical control module based on a preset tension range threshold and a speed difference threshold, and warns the staff through an audible and visual alarm.

9. The aluminum alloy coil continuous feeding system according to claim 8, characterized in that: The tension range threshold of the aluminum alloy coil is 50-200N, and the speed difference threshold of the unwinding machine is ±5%.

Images