Nylon thread speed synchronous control device

Abstract

The utility model relates to a nylon thread speed synchronous control device which is applied to a zipper forming machine, the zipper forming machine comprises a machine frame and a zipper tooth forming device erected on the machine frame, and the nylon thread speed synchronous control device comprises a first thread inlet component, a second thread inlet component, a third thread inlet component and a fourth thread inlet component, the second wire inlet component is rotatably arranged on the inner side of the rack and used for controlling the wire outlet speed of zipper nylon; the controller is erected on one side of the rack and is uniformly and electrically connected with the first wire inlet component / the second wire inlet component; the speed ratio of incoming and outgoing lines is coordinated and controlled. The zipper nylon thread feeding and discharging speed can be accurately controlled, it is ensured that nylon threads are stably and evenly supplied in the zipper forming process, and the production quality and efficiency of zippers are improved.

Description

Technical Field

[0001] This utility model relates to the field of zipper production equipment technology, and in particular to a nylon linear speed synchronization control device. Background Technology

[0002] In zipper production, especially in the forming of nylon zippers, the synchronization of the nylon thread's feed and output speeds is crucial to product quality. Traditional zipper forming machines have several problems in controlling nylon thread speed. For example, they cannot precisely coordinate the feed and output speeds, leading to uneven tension in the nylon thread during forming, which can easily result in quality issues such as loose engagement between the zipper teeth and the nylon thread, and uneven zipper surfaces. Moreover, traditional equipment lacks effective speed feedback and adjustment mechanisms. When fluctuations in thread speed occur during production (such as due to changes in thread roll diameter or motor load), adjustments cannot be made in a timely manner, further affecting the stability of product quality. In addition, traditional thread speed control methods are inflexible and difficult to adapt to the needs of different specifications and materials of nylon thread, as well as different production processes.

[0003] Therefore, developing a device capable of achieving precise linear speed synchronization control is of significant practical importance. Summary of the Invention

[0004] The purpose of this utility model is to provide a nylon thread speed synchronization control device for zipper forming machines, which can accurately control the infeed and outfeed speeds of nylon thread in zippers, ensuring a stable and uniform supply of nylon thread during the zipper forming process, improving the production quality and efficiency of zippers, and is applicable to various types of zipper forming machines to solve the above-mentioned technical problems.

[0005] To achieve the above technical solution, the technical solution of this utility model is as follows: A nylon thread speed synchronization control device is mainly applied to a zipper forming machine, which includes a frame and a zipper tooth forming device mounted on the frame. This device consists of a first thread inlet component, a second thread inlet component, and a controller. The first thread inlet component is located on one side of the frame and is responsible for controlling the thread inlet speed of the zipper nylon; the second thread inlet component is rotatably mounted inside the frame and is used to control the thread outlet speed of the zipper nylon; the controller is mounted on one side of the frame and is electrically connected to the first and second thread inlet components. It receives and processes signals from both components and feeds the processing results back to them, thereby coordinating and controlling the speed ratio of the thread inlet and outlet to ensure that the thread inlet and outlet speeds are consistent.

[0006] Furthermore, the first feeding component includes a first feeding base plate, with a first servo motor rotatably mounted on the bottom of the base plate. A guide wheel is rotatably mounted on the base plate, positioned above the servo motor. During feeding, the nylon thread follows a V-shaped path between the guide wheel and the servo motor. This structural design allows the nylon thread to maintain stable tension during feeding. The V-shaped path increases the contact area between the nylon thread and the guide wheel and servo motor, reducing slippage and thus enabling more precise control of the feeding speed. A pull wheel is detachably mounted on the output end of the first servo motor. The pull wheel has a concave and deformable pull groove. When the nylon thread is embedded in the pull groove, the shape of the groove automatically adjusts according to the diameter and material of the nylon thread, further ensuring stable transmission of the nylon thread on the pull wheel, preventing thread deviation and detachment, and improving the accuracy of feeding speed control.

[0007] Furthermore, the second thread-feeding component is a second servo motor mounted below the zipper tooth forming device, with a thread-feeding wheel at its output end. The second servo motor directly drives the thread-feeding wheel to rotate, feeding the nylon thread to the zipper tooth forming device for zipper forming. Through the electrical connection between the controller and the second servo motor, its output speed can be precisely controlled, thereby achieving precise control of the nylon thread output speed. This ensures that during the zipper forming process, the nylon thread can engage with the zipper teeth at an appropriate speed, guaranteeing the quality of the zipper.

[0008] Furthermore, the controller includes a speed detection module, a calculation module, and a control signal output module. The speed detection module detects the current rotational speed of the first and second servo motors in real time. A first encoder is connected to the first servo motor to acquire its rotational angle information and convert it into a first speed signal. A second encoder is connected to the second servo motor to acquire its rotational angle information and convert it into a second speed signal. The calculation module uses a PID algorithm to calculate and adjust the rotational speed. The input parameters of this algorithm include the first speed signal, the second speed signal, and a preset target linear velocity. Through precise calculation of these parameters, the adjustment amount required to make the incoming and outgoing wire speeds consistent can be quickly and accurately determined. The control signal output module outputs the control signals corresponding to the adjusted rotational speeds to the first and second servo motors respectively, realizing real-time adjustment of the motor speeds and ensuring the synchronization of the linear speeds.

[0009] Compared with existing technologies, this invention has the following advantages: By setting up a first infeed component, a second infeed component, and a controller, this invention achieves precise and coordinated control of the nylon thread infeed and outfeed speeds in zipper production. The controller is mounted on one side of the frame and electrically connected to the two infeed components. It can receive signals from them, process these signals, and then feed them back to their respective components, thereby dynamically adjusting the motor speed to ensure consistent thread infeed and outfeed speeds. This real-time feedback control mechanism effectively solves the shortcomings of traditional zipper forming machines in controlling nylon thread speed, ensuring uniform and stable nylon thread tension during zipper forming. Attached Figure Description

[0010] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0011] Figure 1 This is a schematic diagram of a nylon linear speed synchronization control device. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] Please see the appendix Figure 1 As shown: A nylon linear speed synchronization control device is applied to a zipper forming machine. The zipper forming machine includes a frame 1 and a tooth forming device mounted on the frame 1. In this example, the tooth forming device is proprietary technology and well known to those skilled in the art, and will not be described in detail here. The nylon linear speed synchronization control device includes:

[0015] The first infeed component 2 is located on one side of the frame 1 and is used to control the feed speed of the zipper nylon;

[0016] The second infeed component 3 is rotatably mounted inside the frame 1 and is used to control the outfeed speed of the zipper nylon; and

[0017] The controller 4 is mounted on one side of the frame 1 and is electrically connected to the first inlet component 2 and the second inlet component 3; it is used to coordinate and control the speed ratio of the inlet and outlet lines.

[0018] The controller processes the signals fed back from the first and second wire-infeed components 2 and 3, and then feeds them back to their respective components to ensure consistent wire-in and wire-out speeds. By configuring the first and second wire-infeed components 2 and 3, and the controller 4, precise and coordinated control of the zipper nylon wire-in and wire-out speeds is achieved. The controller is mounted on one side of the frame and electrically connected to the two wire-infeed components. It receives signals from them, processes them, and then feeds them back to the respective components, thereby dynamically adjusting the motor speed to ensure consistent wire-in and wire-out speeds. This real-time feedback control mechanism effectively solves the shortcomings of traditional zipper forming machines in controlling nylon wire speed, ensuring uniform and stable nylon wire tension during zipper forming. For example, during high-speed zipper production, regardless of changes in the production process or external environment, a stable wire speed is maintained, improving zipper production quality and reducing quality problems such as loose bonding between zipper teeth and nylon wire, and uneven zipper surfaces caused by inconsistent wire speeds.

[0019] Based on the above embodiments, the first feeding component 2 includes a first feeding base plate 21; a first servo motor 22 is rotatably mounted on the bottom of the first feeding base plate 21; a guide wheel 23 is rotatably mounted on the first feeding base plate 21; the guide wheel 23 is positioned above the first servo motor 22; wherein, during feeding, the nylon thread follows a V-shaped path between the guide wheel 23 and the first servo motor 22. A pull wheel is detachably mounted on the output end of the first servo motor 22; the pull wheel has a concave and deformable pull groove. This structural design increases the contact area between the nylon thread and the guide wheel and the first servo motor. The nylon thread experiences a certain amount of friction and tension in the V-shaped path, making it less prone to slippage during feeding, thus enabling more stable control of the feeding speed and reducing speed fluctuations. Simply put, when handling nylon threads of different materials or thicknesses, the V-shaped path structure can adapt and provide stable feeding tension, ensuring precise control of the feeding speed by the first servo motor and improving the applicability of the device to various nylon threads. Additionally, the output end of the first servo motor can be detachably fitted with a drawer wheel featuring a concave, deformable drawer groove. When the nylon thread is embedded in the drawer groove, its deformable nature allows it to automatically adjust its shape according to the diameter and material of the nylon thread, ensuring a tight fit and further guaranteeing stable transmission of the nylon thread on the drawer wheel. This not only improves the grip of the nylon thread on the drawer wheel, preventing thread deviation and detachment, but also adapts to the feeding requirements of nylon threads of different specifications. Frequent drawer wheel replacements are unnecessary when changing nylon thread spools, improving production efficiency and ensuring the accuracy and stability of the feed speed control.

[0020] Based on the above embodiments, the second thread-feeding component 3 is a second servo motor mounted below the chain tooth forming device; the output end of the second servo motor is equipped with a thread-feeding wheel, and the second thread-feeding component adopts a second servo motor mounted below the chain tooth forming device, with a thread-feeding wheel at its output end. This method of directly driving the thread-feeding wheel by a servo motor can precisely adjust the output speed according to the controller's instructions, achieving precise control of the nylon thread output speed. During the zipper forming process, the second servo motor can adjust the nylon thread output speed in real time according to the speed requirements of chain tooth forming, ensuring that the nylon thread engages with the chain teeth at a suitable speed.

[0021] Based on the above embodiments, the controller 4 includes: a speed detection module for real-time detection of the current rotational speed of the first servo motor and the second servo motor; a calculation module for calculating the required adjustment rotational speed of the first servo motor and the second servo motor based on the current rotational speed and a preset linear speed synchronization condition; and a control signal output module for outputting control signals corresponding to the adjusted rotational speed to the first servo motor and the second servo motor respectively. The controller's speed detection module can detect the current rotational speed of the first servo motor and the second servo motor in real time, the calculation module calculates the required adjustment rotational speed based on the current rotational speed and the preset linear speed synchronization condition, and the control signal output module outputs control signals corresponding to the adjusted rotational speed to the first servo motor and the second servo motor respectively. This series of functions enables the controller to adjust the motor speed in real time and accurately, ensuring that the input and output speeds remain consistent. For example, when the linear speed fluctuates due to changes in the diameter of the nylon thread roll or changes in the motor load during production, the controller can quickly detect the speed change and calculate the accurate adjustment amount, adjusting the motor speed in a timely manner to maintain a stable linear speed, ensuring the continuity and stability of the zipper production process, and improving the consistency of product quality.

[0022] Based on the above embodiments, the speed detection module includes: a first encoder connected to the first servo motor, used to acquire the rotation angle information of the first servo motor and convert it into a first speed signal; and a second encoder connected to the second servo motor, used to acquire the rotation angle information of the second servo motor and convert it into a second speed signal. The first encoder in the speed detection module is connected to the first servo motor to acquire the rotation angle information of the first servo motor and convert it into a first speed signal, while the second encoder is connected to the second servo motor to acquire the rotation angle information of the second servo motor and convert it into a second speed signal. The use of encoders ensures the accuracy of speed signal acquisition, providing a reliable data foundation for the controller's precise calculations. In a high-speed zipper forming machine, accurate speed signals enable the controller to promptly and accurately determine the motor's operating status, thereby more precisely adjusting the motor speed and achieving more precise linear speed synchronization control. Even when the motor speed changes rapidly, the encoder can accurately acquire rotation angle information, ensuring that the controller will not make control errors due to speed signal errors, thus improving the control accuracy and reliability of the entire device.

[0023] Based on the above embodiments, the calculation module uses a PID algorithm to calculate the adjusted rotational speed. The input parameters of the PID algorithm include the first speed signal, the second speed signal, and a preset target linear speed. The PID algorithm is a mature and efficient control algorithm that can dynamically adjust the system based on the deviation between the actual speed and the target speed, quickly and stably achieving the expected control effect. In nylon linear speed synchronization control, the PID algorithm can accurately calculate the required adjustment amount for the first and second servo motors based on the difference between the first and second speed signals and the preset target linear speed, making the input and output speeds quickly converge and remain stable. For example, when starting or stopping the zipper forming machine, the motor speed changes significantly. The PID algorithm can quickly respond and adjust the motor speed, reducing the overshoot and adjustment time of the linear speed, improving the dynamic response performance and control stability of the device, and further enhancing the efficiency and quality of zipper production.

[0024] The working principle of this invention is as follows: During the zipper production process, the first thread feeding component begins to feed the nylon thread, which passes through the guide roller and winds around the thread puller of the first servo motor, maintaining stable tension under the action of a V-shaped trend. The second servo motor of the second thread feeding component drives the thread feeding roller to transport the nylon thread to the zipper forming device for zipper forming. At this time, the first encoder and the second encoder in the speed detection module monitor the rotation speed of the first servo motor and the second servo motor in real time, respectively, and convert them into speed signals that are transmitted to the calculation module. Based on the received speed signals and the preset target linear speed, the calculation module uses a PID algorithm to calculate the required adjustment rotation speed of the first servo motor and the second servo motor. Then, the control signal output module sends the control signals corresponding to the adjusted rotation speed to the first servo motor and the second servo motor respectively. The first servo motor and the second servo motor adjust their own rotation speed according to the received control signals to keep the thread feeding and output speeds consistent. Throughout the entire production process, this feedback control process is continuously cyclical, ensuring that the linear speed of the nylon thread remains synchronized during the zipper forming process, unaffected by external factors (such as changes in the thread roll diameter, changes in motor load, etc.), thereby producing high-quality zipper products.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art should be able to make equivalent embodiments by making some changes or modifications to the above-disclosed technical content without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A nylon thread speed synchronous control device applied to a zipper forming machine, the zipper forming machine comprising a rack (1) and a chain tooth forming device (5) erected on the rack (1), characterized in that, The nylon thread speed synchronous control device comprises: A first feeding component (2) is located on one side of the rack (1) and is used for controlling the feeding speed of the nylon thread of the zipper; A second feeding component (3) is rotatably arranged on the inner side of the rack (1) and is used for controlling the discharging speed of the nylon thread of the zipper; and A controller (4) is arranged on one side of the rack (1) and is electrically connected to the first feeding component (2) and the second feeding component (3) uniformly; and is used for coordinately controlling the speed ratio of the feeding and discharging. The controller feeds back the signals processed according to the first feeding component (2) and the second feeding component (3) to the first feeding component (2) and the second feeding component (3) respectively, so that the feeding and discharging speeds are consistent.

2. The nylon thread speed synchronization control device of claim 1, wherein: The first feeding component (2) comprises a first feeding bottom plate (21); the first feeding bottom plate (21) is rotatably provided with a first servo motor (22) at the bottom; a guide roller (23) is rotatably arranged on the first feeding bottom plate (21); and the guide roller (23) is arranged above the first servo motor (22). When feeding, the nylon thread presents a V-shaped trend between the guide roller (23) and the first servo motor (22).

3. The nylon thread speed synchronization control device of claim 2, wherein: A pulling roller is detachably installed at the output end of the first servo motor (22); and the pulling roller is provided with an inner recessed and deformable pulling groove.

4. The nylon thread speed synchronization control device of claim 1, wherein: The second feeding component (3) is a second servo motor (31) arranged below the chain tooth forming device; and the output end of the second servo motor (31) is provided with a feeding roller (32).

5. The nylon thread speed synchronization control device of claim 1, wherein: The controller (4) comprises a speed detection module, a calculation module and a control signal output module; the speed detection module is used for detecting the current rotating speed of the first servo motor and the second servo motor in real time; the calculation module is used for calculating the adjusting rotating speed required by the first servo motor and the second servo motor according to the current rotating speed and a preset thread speed synchronization condition; and the control signal output module is used for outputting the control signals corresponding to the adjusting rotating speed to the first servo motor and the second servo motor respectively.

6. The nylon thread speed synchronization control device of claim 5, wherein: The speed detection module comprises a first encoder and a second encoder; the first encoder is connected to the first servo motor and is used for acquiring the rotating angle information of the first servo motor and converting the rotating angle information into a first speed signal; and the second encoder is connected to the second servo motor and is used for acquiring the rotating angle information of the second servo motor and converting the rotating angle information into a second speed signal.

7. The nylon thread speed synchronization control device of claim 6, wherein: The calculation module adopts a PID algorithm to calculate the adjusting rotating speed; and the input parameters of the PID algorithm comprise the first speed signal, the second speed signal and a preset target thread speed.

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