A monitoring and control system for unwinding a leather polishing machine based on magnetic powder braking

Abstract

This utility model relates to the field of industrial automation control technology, and in particular to a monitoring and control system for the unwinding of a leather grinding machine based on magnetic powder braking. The system adds a magnetic powder braking clutch to the unwinding frame of the leather grinding machine, and connects it to the unwinding roller via a coupling. A controller signals and controls the magnetic powder braking clutch to adjust the braking during the unwinding process. The system is also equipped with auxiliary components such as an emergency stop button, an audible and visual alarm, a speed sensor, a temperature sensor, and a lidar detector. The emergency stop button is installed on the operating side for emergency shutdown; the audible and visual alarm is located on the top of the frame and emits a warning signal; the speed sensor is aligned with the output shaft of the magnetic powder braking clutch to monitor its speed; the temperature sensor is in close contact with the housing of the magnetic powder braking clutch to detect its temperature; and the lidar detector is installed on the top of the frame to detect the surrounding area.

Description

Technical Field

[0001] This utility model relates to the field of industrial automation control technology, and in particular to a monitoring and control system for the unwinding of a leather grinding machine based on magnetic powder braking. Background Technology

[0002] In the leather processing industry, the leather polishing machine is a key piece of equipment for achieving fine surface treatment of leather. The unwinding process, as a pre-processing step before the polishing machine's operation, directly affects the subsequent processing quality and production efficiency. Currently, the industry mostly uses a clamp-type tension chuck to fix and control the tension of the raw leather roll during unwinding. However, in long-term practice, this traditional device has revealed a series of problems that urgently need to be solved.

[0003] From the perspective of production safety and continuity, the central disc of the jacketed tension chuck is prone to deformation due to wear during production, leading to frequent jamming and seizing. In severe cases, it can even cause the unwinding support to flip, resulting in production interruptions and posing significant safety hazards to on-site operators. Regarding product quality control, the insufficient tension adjustment precision and poor stability of this tension chuck make it highly susceptible to edge flipping, wrinkling, and even leather damage due to tension fluctuations when processing thin, elastic, and soft raw leather. This significantly reduces the product qualification rate and restricts the company's ability to process high-end leather products. From the perspective of manual operation and labor intensity, traditional chucks weigh around 50 catties, requiring operators to frequently move up and down the chuck during roll changes, sometimes up to 30 times per shift. This not only results in extremely high labor intensity but also a cumbersome and inconvenient operation process, affecting roll change efficiency and increasing the risk of human error. In terms of cost control, jacketed tension chucks are not only expensive to purchase but also require multiple replacements annually due to their wear-prone nature, leading to high equipment maintenance costs and placing a heavy economic burden on companies. Furthermore, the traditional unwinding system and its matching design with the jacketed tension chuck lack an effective monitoring and alarm mechanism compatible with the chuck. When the chuck malfunctions, such as jamming or seizing, or when tension fluctuations may cause quality problems with the raw leather, warnings cannot be issued in a timely manner. This often only becomes apparent after a large number of defective products have been produced and the equipment malfunction has escalated, increasing rework costs and potentially leading to safety accidents due to equipment overload, threatening the personal safety of operators. Utility Model Content

[0004] This invention proposes a magnetic powder braking-based unwinding monitoring and control system for a leather grinding machine, aiming to completely solve the problems of poor production safety and continuity, difficulty in controlling product quality, high labor intensity, high cost, and lack of effective monitoring and alarm mechanisms associated with traditional jacketed tension chucks in the unwinding process of leather grinding machines. This system uses a magnetic powder braking device to replace the traditional jacketed tension chuck, and combines it with a monitoring and alarm mechanism to achieve stable control of the unwinding process. The specific technical solution is as follows: A monitoring and control system for the unwinding of a leather polishing machine based on magnetic powder braking includes a controller and a leather polishing machine. The leather polishing machine includes an unwinding frame with an unwinding roller rotatably mounted on it. It also includes a magnetic powder braking clutch, which is installed on one side of the unwinding frame and is connected to the unwinding roller via a coupling. The magnetic powder braking clutch is connected to the controller via a signal.

[0005] Preferably, it also includes an emergency stop button, which is installed on the operating side of the unwinding frame and located below the audible and visual alarm, with a distance of 15-20cm between them. The emergency stop button is connected to the controller signal.

[0006] Preferably, it also includes an audible and visual alarm, which is fixedly installed on the top of the unwinding frame and is connected to the controller via a signal connection.

[0007] Preferably, it also includes a speed sensor and a signal disk; the signal disk is fixedly mounted on the unwinding roller; the speed sensor is fixedly connected to the unwinding frame, and both the signal disk and the speed sensor are located on the side of the magnetic powder brake clutch away from the unwinding frame; the detection end of the speed sensor is aligned with the end face of the signal disk, and the speed sensor is signal-connected to the controller.

[0008] Preferably, it also includes a temperature sensor, which is fixedly mounted on the side of the unwinding frame by a bracket and located next to the magnetic powder brake clutch. The detection end of the temperature sensor faces the housing of the magnetic powder brake clutch, and the distance between the two is 8-15mm. The temperature sensor is connected to the controller signal.

[0009] Preferably, it also includes a lidar detector, which is a lidar detector with a 360-degree detection range. It is fixedly installed on the top of the unwinding frame by an extension rod, and its detection direction covers the surrounding area of ​​the unwinding frame. The lidar detector is connected to the controller signal.

[0010] The beneficial effects of this utility model are as follows: 1. This utility model uses a new type of chuck device to replace the original traditional chuck, which solves the problem of jamming and seizing caused by wear and deformation of the center plate of the traditional chuck. The magnetic powder brake clutch transmission is more stable, reducing the risk of the unwinding bracket flipping, avoiding production interruption, and ensuring the personal safety of operators.

[0011] 2. The newly added emergency stop button in this utility model can quickly stop the equipment in an emergency, further improving operational safety; the laser radar detector can monitor the area around the unwinding frame and can promptly detect potential dangers such as personnel approaching, enhancing the safety of the production environment.

[0012] 3. The magnetic powder braking device of this utility model has higher tension adjustment accuracy and better stability. When processing thin, elastic and soft raw leather, it can effectively reduce problems such as edge turning, wrinkling and abrasion caused by tension fluctuations, improve the product qualification rate, and enhance the enterprise's processing capabilities for high-end leather products.

[0013] 4. The magnetic powder braking device of this utility model replaces the traditional chuck weighing about 50 catties. Operators no longer need to frequently move the heavy chuck up and down during roll changing, which greatly reduces labor intensity.

[0014] 5. This utility model uses a new type of chuck device to replace the original traditional chuck, which simplifies the roll changing operation process, reduces the tedious operation of up to 30 times in a shift, improves roll changing efficiency, and reduces the risk of human error.

[0015] 6. Compared with the traditional jacketed tension chuck, the magnetic powder braking device of this utility model may require some initial investment, but it is more durable and less prone to damage, reducing the need for multiple replacements every year, lowering equipment maintenance costs, and alleviating the economic burden on enterprises.

[0016] 7. The newly added speed sensor in this utility model can monitor the operating status of the magnetic powder brake clutch, and the temperature sensor can monitor its housing temperature in real time. When an abnormality occurs, the controller can issue a timely warning through an audible and visual alarm to avoid the production of a large number of defective products and the expansion of equipment failure.

[0017] 8. During equipment operation, the lidar detector of this utility model can detect whether personnel are approaching the operating range of the equipment in real time by monitoring the area around the unwinding frame. This provides personnel approach warning for safe operation of the equipment and avoids safety accidents caused by personnel accidentally touching or getting too close to the operating parts. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a leather grinding machine unwinding monitoring and control system based on magnetic powder braking according to this utility model.

[0019] Figure 2 This is a side view of a leather grinding machine unwinding monitoring and control system based on magnetic powder braking according to this utility model.

[0020] In the diagram: 1. Grinding machine; 11. Unwinding frame; 12. Unwinding roller; 2. Magnetic powder brake clutch; 3. Emergency stop button; 4. Audible and visual alarm; 5. Speed ​​sensor; 6. Temperature sensor; 7. LiDAR detector; 8. Heightening rod; 9. Signal panel. Detailed Implementation

[0021] A monitoring and control system for the unwinding of a leather polishing machine based on magnetic powder braking includes a controller and a leather polishing machine 1. The leather polishing machine 1 includes an unwinding frame 11, on which an unwinding roller 12 is rotatably mounted. It also includes a magnetic powder braking clutch 2, which is installed on one side of the unwinding frame 11. The magnetic powder braking clutch 2 is connected to the unwinding roller 12 via a coupling and is signal-connected to the controller.

[0022] The system also includes an emergency stop button 3, which is installed on the operating side of the unwinding rack 11 and located below the audible and visual alarm 3, with a distance of 15-20cm between them. The emergency stop button 6 is connected to the controller signal.

[0023] The system also includes an audible and visual alarm 4, which is fixedly installed on the top of the unwinding frame 11 and is connected to the controller signal.

[0024] The system also includes a speed sensor 5 and a signal disk 9; the signal disk 9 is fixedly mounted on the unwinding roller 12; the speed sensor 5 is fixedly connected to the unwinding frame 11, and both the signal disk 9 and the speed sensor 5 are located on the side of the magnetic powder brake clutch 2 away from the unwinding frame 11; the detection end of the speed sensor 5 is aligned with the end face of the signal disk 9, and the speed sensor 5 is connected to the controller signal.

[0025] The system also includes a temperature sensor 6, which is fixedly mounted on the side of the unwinding frame 11 by a bracket and located next to the magnetic powder brake clutch 2. The detection end of the temperature sensor 6 faces the housing of the magnetic powder brake clutch 2, and the distance between the two is 8-15mm. The temperature sensor 6 is connected to the controller signal.

[0026] The system also includes a lidar detector 7, which is a lidar detector with a 360-degree detection range. It is fixedly installed on the top of the unwinding frame 11 by a riser rod 8. Its detection direction covers the surrounding area of ​​the unwinding frame 11. The lidar detector 7 is connected to the controller signal.

Claims

1. A kind of based on magnetic powder brake's leather buffing machine unwinding monitoring control system, including controller, leather buffing machine (1), the leather buffing machine (1) includes unwinding frame (11), the unwinding frame (11) is rotatably installed with unwinding roller (12), it is characterized in that, It includes a magnetic powder brake clutch (2), which is installed on one side of the unwinding frame (11). The magnetic powder brake clutch (2) is connected to the unwinding roller (12) via a coupling. The magnetic powder brake clutch (2) is connected to the controller signal.

2. The magnetic powder brake based buffing machine unwinding monitoring control system according to claim 1, characterized in that, It also includes an emergency stop button (3), which is installed on the outside of the unwinding frame (11) and located on the magnetic powder brake clutch (2). The emergency stop button (6) is connected to the controller signal.

3. The magnetic powder brake based buffing machine unwinding monitoring control system according to claim 1, wherein, It also includes an audible and visual alarm (4), which is fixedly installed on the top of the unwinding frame (11) and is connected to the controller signal.

4. The magnetic powder brake based buffing machine unwinding monitoring control system according to claim 1, wherein, It also includes a speed sensor (5) and a signal disk (9); the signal disk (9) is fixedly mounted on the unwinding roller (12); the speed sensor (5) is fixedly installed on the inner side of the unwinding frame (11) by a bracket, and the signal disk (9) and the speed sensor (5) are both located on the side of the magnetic powder brake clutch (2) away from the unwinding frame (11); the detection end of the speed sensor (5) is aligned with the end face of the signal disk (9), and the speed sensor (5) is connected to the controller signal.

5. The abrasive skin machine unwinding monitoring control system based on magnetic powder brake according to claim 1, characterized in that, It also includes a temperature sensor (6), which is fixedly installed on the outside of the unwinding frame (11) by a bracket and located next to the magnetic powder brake clutch (2). The detection end of the temperature sensor (6) faces the housing of the magnetic powder brake clutch (2), and the distance between the two is 8-15mm. The temperature sensor (6) is connected to the controller signal.

6. The magnetic powder brake based buffing machine unwinding monitoring control system according to claim 1, wherein, It also includes a lidar detector (7), which is a lidar detector with a 360-degree detection range. It is fixedly installed on the top of the unwinding frame (11) by a heightening rod (8). Its detection direction covers the surrounding area of ​​the unwinding frame (11). The lidar detector (7) is connected to the controller signal.

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