Automatic pultrusion production line of carding machine cover plate

Abstract

The invention provides an automatic pultrusion production line of a carding machine cover plate, and relates to the technical field of carding machines, the automatic pultrusion production line comprises a creel, a gum dipping tank, a knitting machine, a pre-forming mold, a heating forming curing mold, a crawler-type traction machine, fixed-length cutting equipment and a numerical control machining center which are sequentially arranged in the running direction of fiber bundles, and further comprises a central control system; a deviation rectifying device is arranged on the preforming mold, the heating forming curing mold is provided with a plurality of sections of independent temperature control areas, the numerical control machining center is in seamless connection with the fixed-length cutting equipment, and the central control system is electrically connected with all the equipment in an operation mode and used for coordinating operation of all the equipment. The deviation correcting device arranged on the pre-forming mold can correct the deviation phenomenon of fibers in production in real time, and the shape precision of the cross section of a pre-forming body is guaranteed; the numerical control machining center and the fixed-length cutting equipment are seamlessly connected, positioning errors caused by secondary clamping are avoided, the ultimate precision of a cover plate finished product is remarkably improved, and the high-precision assembly requirement of the carding machine is met.

Description

Technical Field

[0001] This invention relates to the field of carding machine technology, specifically to an automated pultrusion molding production line for carding machine cover plates. Background Technology

[0002] The carding machine cover plate is a core component of the carding machine. It is made of continuous fiber reinforced resin matrix composite material through molding process. It is mostly a large-size, high-dimensional curved surface structure. It is mainly used in the fiber combing and carding process of the carding machine. Its structural precision and performance stability directly affect the uniformity of fiber combing and the final quality of cotton textile products. It is one of the core components to ensure the efficient operation of the carding machine.

[0003] The existing carding machine cover plates have the following problems in the production process. First, the processing accuracy and assembly fit are insufficient. During production, the fibers are prone to misalignment and require secondary clamping after cutting, which can easily lead to positioning errors and make it difficult to meet the requirements of high-precision assembly. Second, the level of automation and intelligence is low. Each production equipment operates independently, and key links such as fiber tension adjustment and mold temperature control rely on manual intervention, making it impossible to achieve real-time parameter optimization. Finally, the internal quality and consistency of the composite structure are poor. Insufficient temperature control accuracy of the curing mold leads to uneven resin curing, and it is difficult to completely remove air bubbles and excess resin during the pre-forming stage, resulting in poor product mechanical property stability. Summary of the Invention

[0004] The present invention provides an automated pultrusion molding production line for carding machine cover plates to solve at least one of the problems mentioned in the background art.

[0005] To address the aforementioned technical problems, this invention discloses an automated pultrusion molding production line for carding machine cover plates, comprising a yarn rack, a glue-impregnating tank, a braiding machine, a preforming mold, a thermoforming and curing mold, a crawler-type traction machine, a fixed-length cutting device, and a CNC machining center arranged sequentially along the fiber bundle running direction, and also includes a central control system; the preforming mold is equipped with a correction device, the thermoforming and curing mold has multiple independent temperature control zones, the CNC machining center is seamlessly connected to the fixed-length cutting device, and the central control system is electrically connected to the operation of each piece of equipment, and the central control system is used to coordinate the operation of each piece of equipment.

[0006] Preferably, the yarn frame is an active yarn feeding structure, and a tensioner is installed on the yarn frame. The yarn frame is used to place and guide multiple rolls of dry fiber bundles. The outlet of the yarn frame is connected to the inlet of the impregnation tank. The impregnation tank is made of stainless steel and is equipped with a heating jacket. The resin temperature of the impregnation tank is 35±2℃. The outlet of the impregnation tank is connected to the braiding machine.

[0007] Preferably, the tracked traction machine is located at the exit end of the thermoforming and curing mold, and the tracked traction machine is used to provide constant and continuous traction force; an auxiliary traction machine is also installed between the fixed-length cutting equipment and the CNC machining center, and the auxiliary traction machine is used to clamp the cut cover plate semi-finished product, and the auxiliary traction machine is electrically connected to the central control system.

[0008] Preferably, the central control system includes a multi-source data acquisition unit, a central collaborative scheduling unit, and a terminal execution control unit. The multi-source data acquisition unit is deployed at the yarn rack outlet, various areas of the heating and curing mold, the clamping end of the tracked traction machine, and the preforming mold outlet, collecting fiber tension, mold temperature, traction force, and preform cross-sectional parameters in real time. The central collaborative scheduling unit performs multi-parameter coupling analysis on the collected data and generates equipment collaborative instructions. The terminal execution control unit interfaces with the correction device, temperature control system, and traction mechanism to accurately execute control instructions, thus constructing a closed-loop control foundation for the entire process.

[0009] Preferably, the preform mold's correction device integrates a correction control unit, including a machine vision inspection subunit, a deviation calculation subunit, and an execution subunit. The machine vision inspection subunit acquires images of the preform's edge and extracts contour features using an industrial camera and a ring light source. The deviation calculation subunit uses a visual servo closed-loop PID and dead-zone adaptive algorithm to compare the contour features with the position deviation value output by the standard template. The execution subunit dynamically adjusts the preform's position using pneumatic correction rollers, with a correction response time ≤50ms and an offset error ≤0.01mm.

[0010] Preferably, the temperature adaptive control unit of the heat-curing mold includes a zone temperature measurement subunit, a thermal reaction model subunit, and a precision adjustment subunit; the zone temperature measurement subunit independently measures the temperature of the preheating section, gel section, curing section, and post-curing section using thermocouples, with an acquisition accuracy of ±0.3℃; the thermal reaction model subunit dynamically generates a temperature gradient curve based on the resin type and real-time temperature data; the precision adjustment subunit adjusts the temperature of each area according to the curve using an electric heating or oil heating system to ensure uniform resin curing.

[0011] Preferably, the main and auxiliary traction coordination control unit is electrically connected to the tracked traction machine and the auxiliary traction machine, and includes a synchronization control subunit, a switching control subunit, and a positioning subunit; the synchronization control subunit uses multi-motor synchronization technology to ensure that the main and auxiliary traction machines maintain the same linear speed before cutting to stabilize the profile tension; the switching control subunit triggers a mode switch during cutting, allowing the main traction machine to run continuously and the auxiliary traction machine to clamp independently; the positioning subunit provides a ±0.02mm level positioning reference for the CNC machining center through the auxiliary traction machine's clamping end face positioning mechanism.

[0012] Preferably, the CNC machining center integrates a machining path adaptive unit, including a 3D scanning subunit, a deviation comparison subunit, and a path generation subunit; the 3D scanning subunit obtains the actual geometric parameters of the semi-finished product after cutting using a laser scanner; the deviation comparison subunit compares the actual parameters with the design model and extracts the shape and position deviations; the path generation subunit automatically generates a compensated machining path based on the deviation data and the positioning reference of the auxiliary traction machine, completing the machining of mounting holes and slots in one go and eliminating secondary clamping errors.

[0013] Preferably, it also includes a quality traceability and optimization unit, which is linked with the multi-source data acquisition unit and the central collaborative scheduling unit. This unit consists of an online detection subunit, a data storage subunit, and a parameter optimization subunit. The online detection subunit detects the dimensional accuracy, surface flatness, and internal density of the finished cover plate. The data storage subunit records the full-process operation parameters and test results for each batch, establishing a product quality database. The parameter optimization subunit optimizes the fiber tension setpoint, mold temperature curve, and traction speed parameters based on the database data using reinforcement learning algorithms, thereby achieving continuous improvement in product quality.

[0014] Preferably, the central collaborative scheduling unit integrates an equipment linkage control module, including a task scheduling subunit, a communication subunit, and a status monitoring subunit; the task scheduling subunit issues collaborative instructions according to the production process; the communication subunit adopts a communication protocol that integrates programmable logic controllers and industrial Internet of Things, with data interaction latency between devices ≤100ms; the status monitoring subunit displays the equipment operating status in real time, automatically triggers a shutdown warning and pushes fault location information when an anomaly is detected, ensuring production continuity.

[0015] Compared with the prior art, the present invention provides an automated pultrusion molding production line for carding machine cover plates, which has the following advantages: the correction device set on the preforming mold can correct the fiber deviation in real time during production, ensuring the cross-sectional shape accuracy of the preform; the CNC machining center and the fixed-length cutting equipment are seamlessly connected, and the cut cover plate semi-finished product can directly enter the finishing stage without secondary clamping, completely avoiding the positioning error caused by secondary clamping, significantly improving the final accuracy of the cover plate finished product, and meeting the high-precision assembly requirements of carding machines; The central control system is electrically connected to each piece of equipment and coordinates the entire process, replacing the existing independent operation mode of the equipment. It can automatically optimize parameters and precisely coordinate equipment in key links such as fiber tension adjustment and mold temperature control, greatly reducing manual intervention and significantly improving the automation and intelligence level of the production line. The heating and curing mold is equipped with multiple independent temperature control zones, which can accurately control the thermal reaction processes such as resin gelation and curing, avoiding incomplete or uneven resin curing. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the production line of the present invention; Figure 2 This is a schematic diagram of the workflow of the present invention.

[0017] In the diagram: 1. Yarn frame; 2. Impregnation tank; 3. Braiding machine; 4. Pre-forming mold; 5. Heating and curing mold; 6. Tracked traction machine; 7. Fixed-length cutting equipment; 8. CNC machining center; 9. Auxiliary traction machine. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Example 1: An embodiment of the present invention provides an automated pultrusion molding production line for carding machine cover plates, such as... Figures 1-2As shown, the system includes a yarn frame 1, a glue-impregnating tank 2, a braiding machine 3, a preforming mold 4, a thermoforming and curing mold 5, a tracked traction machine 6, a fixed-length cutting device 7, and a CNC machining center 8 arranged sequentially along the fiber bundle running direction. It also includes a central control system. The preforming mold 4 is equipped with a correction device. The thermoforming and curing mold 5 has multiple independent temperature control zones. The CNC machining center 8 is seamlessly connected to the fixed-length cutting device 7. The central control system is electrically connected to the operation of each piece of equipment and is used to coordinate the operation of each piece of equipment.

[0022] The working principle and beneficial effects of the above technical solution are as follows: After the dry fiber bundle is drawn out from the yarn frame 1, it enters the impregnation tank 2 in sequence to fully impregnate the resin and form a prepreg; the prepreg enters the braiding machine 3 and interweaves with the composite structure braiding core mold to form a three-dimensional braided preform; the preform then enters the preforming mold 4, where excess air bubbles are eliminated and the preform is initially shaped under the compaction action of the mold cavity, while the correction device on the mold corrects the fiber position deviation in real time; the preformed blank is pulled into the heating and curing mold 5 under the constant traction force of the tracked traction machine 6, and the resin gradually gels and cures through the precise thermal reaction controlled by multiple independent temperature control zones to form a dense composite material profile; After curing, the profile is cut synchronously to the set length by the fixed-length cutting equipment 7. Without manual transfer, it can be directly processed by the seamless CNC machining center 8 to complete drilling, grooving and other fine processing in one go. The entire production process is coordinated by the central control system, realizing precise collaboration of each piece of equipment and real-time optimization of parameters, forming an integrated continuous production from raw materials to finished cover plates.

[0023] The correction device of the preforming mold 4 corrects fiber misalignment in real time, ensuring the accuracy of the preform cross-section; the seamless connection between the CNC machining center 8 and the fixed-length cutting equipment 7 completely eliminates positioning errors caused by secondary clamping, greatly improving the final accuracy of the finished cover plate and fully meeting the high-precision assembly requirements of the carding machine; the central control system coordinates the operation of the entire process equipment, automatically completing parameter optimization of key links such as fiber tension adjustment, mold temperature control, and traction speed matching, replacing the traditional manual intervention mode, realizing equipment collaborative linkage and real-time adjustment of process parameters, greatly reducing labor costs and improving production stability.

[0024] Example 2: Based on Example 1 above, as follows Figures 1-2 As shown, the yarn frame 1 is an active yarn feeding structure. A tensioner is installed on the yarn frame 1. The yarn frame 1 is used to place and guide multiple rolls of dry fiber bundles. The outlet of the yarn frame 1 is connected to the inlet of the impregnation tank 2. The impregnation tank 2 is made of stainless steel. A heating jacket is installed inside the impregnation tank 2. The resin temperature of the impregnation tank 2 is 35±2℃. The outlet of the impregnation tank 2 is connected to the braiding machine 3.

[0025] Preferably, the tracked traction machine 6 is located at the outlet end of the heating and curing mold 5, and the tracked traction machine 6 is used to provide constant and continuous traction force; an auxiliary traction machine 9 is also installed between the fixed-length cutting equipment 7 and the CNC machining center 8, and the auxiliary traction machine 9 is used to clamp the cut cover plate semi-finished product, and the auxiliary traction machine 9 is electrically connected to the central control system.

[0026] The working principle and beneficial effects of the above technical solution are as follows: The heating jacket in the impregnation tank 2 stably controls the resin temperature at 35±2℃, so that the fiber bundles are fully and uniformly impregnated with resin to form a prepreg; the preformed blank is pulled into the heating and curing mold 5 under the constant and continuous traction force of the tracked traction machine 6 (main traction power source). Through the precise control of the thermal reaction in multiple independent temperature control zones, the resin gradually gels and cures to form a dense composite material profile; the tracked traction machine 6 is closely connected to the outlet end of the heating and curing mold 5, and the continuous traction force it provides is the fundamental driving force for the continuous operation of the entire pultrusion process. During the process of conveying the cured profile to the fixed-length cutting equipment 7, the auxiliary traction machine 9 (auxiliary traction and precision positioner) and the tracked traction machine 6 achieve precise coordination through the central control system: before the cutting action is triggered, the two run synchronously at the same linear speed, assisting the tracked traction machine 6 in jointly tractioning the profile, ensuring stable tension near the cutting point, and avoiding shaking or deformation; when the fixed-length cutting equipment 7 completes the cutting according to the set length, the tracked traction machine 6 keeps running continuously (or decelerates briefly), and the auxiliary traction machine 9 is independently controlled and precisely clamps the cut cover plate semi-finished product; Subsequently, the auxiliary traction machine 9 smoothly delivers the semi-finished cover plate to the CNC machining center 8 through intermittent or low-speed continuous conveying. Its clamping end face and associated positioning mechanism constitute the precise reference of the cover plate processing coordinate system. The CNC machining center 8 is seamlessly connected with the fixed-length cutting equipment 7, and completes drilling, grooving and other fine processing in one go based on this reference. The entire process is coordinated by the central control system to realize integrated continuous production from raw materials to finished cover plates.

[0027] Precise temperature control at 35±2℃ maintains the resin at a suitable viscosity, significantly improving the uniformity of fiber bundle impregnation and laying the foundation for subsequent molding quality. The auxiliary traction machine 9 replaces manual transfer, achieving seamless flow between cutting and finishing, and shortening the production cycle. The central control system provides precise coordinated control of the two traction machines, reducing manual intervention and operational errors, while ensuring the continuity and stability of the production process, thus facilitating large-scale and efficient production.

[0028] Example 3: Based on Examples 1-2 above, the central control system comprises a multi-source data acquisition unit, a central collaborative scheduling unit, and a terminal execution control unit. The multi-source data acquisition unit is deployed at the yarn rack outlet, various areas of the heating and curing mold, the clamping end of the tracked traction machine, and the pre-forming mold outlet, collecting fiber tension, mold temperature, traction force, and pre-formed body cross-sectional parameters in real time. The central collaborative scheduling unit performs multi-parameter coupling analysis on the collected data to generate equipment collaborative instructions. The terminal execution control unit interfaces with the correction device, temperature control system, and traction mechanism to accurately execute control instructions, thus constructing a closed-loop control foundation for the entire process.

[0029] The beneficial effects of the above technical solution are as follows: The multi-source data acquisition unit covers key nodes such as the yarn rack outlet, the heating and curing mold, the tracked traction machine, and the preforming mold, and captures core data such as fiber tension, mold temperature, traction force, and preform cross-sectional parameters in real time, realizing visualized monitoring of parameters throughout the production process. This completely solves the problem of difficulty in real-time control of key parameters in traditional production and provides data support for precise control. The central collaborative scheduling unit performs coupled analysis on the collected multi-dimensional data, breaks the limitations of adjusting parameters of a single device, and generates globally optimal equipment collaborative instructions. This enables the correction device, temperature control system, traction mechanism, and other equipment to form a linkage response, avoiding parameter conflicts or adjustment lags, further improving the automation and collaboration level of the production line, and significantly improving the dimensional accuracy, internal structural density, and batch consistency of the finished cover plate.

[0030] Example 4: Based on Example 3 above, the preform mold's correction device integrates a correction control unit, including a machine vision inspection subunit, a deviation calculation subunit, and an execution subunit. The machine vision inspection subunit acquires images of the preform's edge and extracts contour features using an industrial camera and a ring light source. The deviation calculation subunit uses a visual servo closed-loop PID and dead-zone adaptive algorithm to compare the contour features with the position deviation value output by the standard template. The execution subunit dynamically adjusts the position of the preform using pneumatic correction rollers, with a correction response time ≤50ms and an offset error ≤0.01mm.

[0031] Preferably, the temperature adaptive control unit of the heat-curing mold includes a zone temperature measurement subunit, a thermal reaction model subunit, and a precision adjustment subunit; the zone temperature measurement subunit independently measures the temperature of the preheating section, gel section, curing section, and post-curing section using thermocouples, with an acquisition accuracy of ±0.3℃; the thermal reaction model subunit dynamically generates a temperature gradient curve based on the resin type and real-time temperature data; the precision adjustment subunit adjusts the temperature of each area according to the curve using an electric heating or oil heating system to ensure uniform resin curing.

[0032] The beneficial effects of the above technical solution are as follows: The machine vision inspection subunit accurately captures the edge contour features of the preform, and combined with the visual servo closed-loop PID and dead zone adaptive algorithm, it can accurately calculate the position deviation and avoid high-frequency jitter through dynamic adjustment of the dead zone; the pneumatic correction roller group has a response time of ≤50ms, which can correct fiber offset in real time and control the offset error within 0.01mm, eliminating the defects in the cross-sectional accuracy of the preform caused by fiber offset from the source, and providing a high-quality blank foundation for subsequent finishing; the temperature adaptive control unit comprehensively covers the entire stage of preheating, gelation, curing and post-curing through high-precision zone temperature measurement of ±0.3℃; the thermal reaction model subunit dynamically generates a dedicated temperature gradient curve based on resin type and real-time temperature data, and accurately adjusts the subunit to adapt the temperature of each area in real time according to the curve, ensuring that the resin undergoes a complete and uniform thermal reaction, completely solving the problems of incomplete curing and uneven curing caused by traditional temperature control, and significantly improving the internal structure density and mechanical performance stability of the cover plate.

[0033] Example 5: Based on Example 4 above, the main and auxiliary traction coordination control unit is electrically connected to the tracked traction machine and the auxiliary traction machine, and includes a synchronization control subunit, a switching control subunit, and a positioning subunit; the synchronization control subunit uses multi-motor synchronization technology to ensure that the main and auxiliary traction machines maintain the same linear speed before cutting to stabilize the profile tension; the switching control subunit triggers a mode switch during cutting, where the main traction machine runs continuously and the auxiliary traction machine clamps independently; the positioning subunit provides a ±0.02mm level positioning reference for the CNC machining center through the auxiliary traction machine's clamping end face positioning mechanism.

[0034] Preferably, the CNC machining center integrates a machining path adaptive unit, including a 3D scanning subunit, a deviation comparison subunit, and a path generation subunit. The 3D scanning subunit acquires the actual geometric parameters of the semi-finished product after cutting using a laser scanner. The deviation comparison subunit compares the actual parameters with the design model and extracts the shape and position deviations. The path generation subunit automatically generates a compensation machining path based on the deviation data and the positioning reference of the auxiliary traction machine, completing the machining of mounting holes and slots in one go and eliminating secondary clamping errors.

[0035] The beneficial effects of the above technical solution are as follows: The synchronous control subunit, through multi-motor synchronization technology, ensures that the linear speeds of the main and auxiliary traction machines are completely consistent before cutting, effectively stabilizing the tension of the profile and avoiding deformation caused by tension fluctuations during cutting; the switching control subunit achieves seamless switching between cutting and conveying modes, with the main traction machine running continuously to ensure production continuity, and the auxiliary traction machine independently clamping to prevent the displacement of semi-finished products; the positioning subunit provides a high-precision positioning reference of ±0.02mm, laying a core foundation for the precise operation of CNC machining centers and further reducing the sources of error from the conveying stage; The 3D scanning subunit quickly captures the actual geometric parameters of the semi-finished product after cutting. The deviation comparison subunit accurately identifies the shape and positional differences between the design model and the actual product. The path generation subunit automatically generates a dedicated compensation processing path based on the deviation data and the positioning reference of the auxiliary traction machine. The precision machining of mounting holes and slots can be completed in one go without secondary clamping, completely solving the positioning deviation problem caused by traditional secondary clamping and greatly improving the dimensional and positional accuracy of the finished cover plate.

[0036] The coordinated switching of main and auxiliary traction avoids production interruptions. The auxiliary traction machine replaces manual transfer to achieve seamless flow of semi-finished products from cutting to processing. The adaptive processing path unit eliminates the tedious steps of manual measurement and adjustment, shortens the processing cycle, and reduces the additional errors introduced by manual operation, making the continuous and efficient operation of the production line more reliable and adaptable to the needs of large-scale production.

[0037] Example 6: Based on Examples 1-5 above, a quality traceability and optimization unit is also included. This unit is linked with the multi-source data acquisition unit and the central collaborative scheduling unit, and consists of an online detection subunit, a data storage subunit, and a parameter optimization subunit. The online detection subunit detects the dimensional accuracy, surface flatness, and internal density of the finished cover plate. The data storage subunit records the full-process operation parameters and test results for each batch, and establishes a product quality database. The parameter optimization subunit optimizes the fiber tension setpoint, mold temperature curve, and traction speed parameters based on the database data through reinforcement learning algorithms, thereby achieving continuous improvement in product quality.

[0038] Preferably, the central collaborative scheduling unit integrates an equipment linkage control module, including a task scheduling subunit, a communication subunit, and a status monitoring subunit; the task scheduling subunit issues collaborative instructions according to the production process; the communication subunit adopts a communication protocol that integrates programmable logic controllers and industrial IoT, with data interaction latency between devices ≤100ms; the status monitoring subunit displays the equipment operating status in real time, automatically triggers a shutdown warning and pushes fault location information when an anomaly is detected, ensuring production continuity.

[0039] The beneficial effects of the above technical solution are as follows: the online inspection subunit comprehensively covers the dimensional accuracy, surface flatness, and internal density testing of the finished cover plate; the data storage subunit synchronously records the entire process operation parameters (fiber tension, mold temperature, etc.) and test results for each batch of products, establishing a complete product quality database. When quality problems occur, the specific production link and parameters can be quickly traced, the root cause of the problem can be accurately located, the cost of quality investigation can be significantly reduced, and the quality control requirements of large-scale production can be met.

[0040] The parameter optimization subunit, based on historical data from the quality database, uses reinforcement learning algorithms to uncover the mapping relationship between parameters and quality. It automatically optimizes core parameters such as fiber tension setpoints, mold temperature curves, and traction speed, forming a closed-loop iterative mechanism of "detection-storage-analysis-optimization." This allows for dynamic adjustment of production parameters without manual intervention, enabling continuous improvement in product quality as data accumulates, gradually reducing the defect rate, and adapting to the quality stability requirements of different batch production.

[0041] In the device linkage control module of the central collaborative scheduling unit, the communication subunit adopts a protocol that integrates programmable logic controller and industrial Internet of Things to control the data interaction delay between devices to ≤100ms, ensuring that the collaborative instructions issued by the task scheduling subunit are quickly transmitted to each device.

[0042] Once an anomaly is detected (such as equipment failure or parameter exceeding the standard), a shutdown warning is automatically triggered immediately, and accurate fault location information is pushed out, which facilitates maintenance personnel to quickly troubleshoot and repair, and greatly shortens downtime. At the same time, it avoids batch quality problems caused by continuous production under abnormal conditions, which not only ensures production continuity, but also reduces material waste and production costs, and improves the reliability and anti-interference capability of the production line.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. An automated pultrusion molding production line for carding machine cover plates, characterized in that, The equipment includes a yarn rack (1), a glue-impregnating tank (2), a braiding machine (3), a preforming mold (4), a thermoforming and curing mold (5), a tracked traction machine (6), a fixed-length cutting device (7), and a CNC machining center (8) arranged sequentially along the fiber bundle running direction. It also includes a central control system. The preforming mold (4) is equipped with a correction device. The thermoforming and curing mold (5) has multiple independent temperature control zones. The CNC machining center (8) is seamlessly connected to the fixed-length cutting device (7). The central control system is electrically connected to the operation of each piece of equipment and is used to coordinate the operation of each piece of equipment.

2. The automated pultrusion molding production line for a carding machine cover plate according to claim 1, characterized in that, The yarn frame (1) is an active yarn feeding structure. A tensioner is installed on the yarn frame (1). The yarn frame (1) is used to place and guide multiple rolls of dry fiber bundles. The outlet of the yarn frame (1) is connected to the inlet of the impregnation tank (2). The impregnation tank (2) is made of stainless steel. A heating jacket is installed inside the impregnation tank (2). The resin temperature of the impregnation tank (2) is 35±2℃. The outlet of the impregnation tank (2) is connected to the braiding machine (3).

3. The automated pultrusion molding production line for a carding machine cover plate according to claim 1, characterized in that, The tracked traction machine (6) is located at the outlet end of the heating and curing mold (5). The tracked traction machine (6) is used to provide constant and continuous traction force. An auxiliary traction machine (9) is also installed between the fixed-length cutting equipment (7) and the CNC machining center (8). The auxiliary traction machine (9) is used to clamp the cut cover plate semi-finished product. The auxiliary traction machine (9) is electrically connected to the central control system.

4. The automated pultrusion molding production line for a carding machine cover plate according to claim 1, characterized in that, The central control system includes a multi-source data acquisition unit, a central collaborative scheduling unit, and a terminal execution control unit. The multi-source data acquisition unit is deployed at the yarn rack outlet, various areas of the heating and curing mold, the clamping end of the tracked traction machine, and the pre-forming mold outlet, collecting fiber tension, mold temperature, traction force, and pre-formed body cross-sectional parameters in real time. The central collaborative scheduling unit performs multi-parameter coupling analysis on the collected data and generates equipment collaborative instructions. The terminal execution control unit interfaces with the correction device, temperature control system, and traction mechanism to accurately execute control instructions, thus constructing the foundation for a closed-loop control throughout the entire process.

5. An automated pultrusion molding production line for a carding machine cover plate according to claim 4, characterized in that, The preform mold's correction device integrates a correction control unit, including a machine vision inspection subunit, a deviation calculation subunit, and an execution subunit; the machine vision inspection subunit acquires images of the preform's edge and extracts contour features using an industrial camera and a ring light source; The deviation calculation subunit uses a visual servo closed-loop PID and dead zone adaptive algorithm to compare the position deviation value of the contour feature with that of the standard template. The execution subunit dynamically adjusts the position of the preform through a pneumatic correction roller group, with a correction response time ≤50ms and an offset error ≤0.01mm.

6. An automated pultrusion molding production line for a carding machine cover plate according to claim 5, characterized in that, The temperature adaptive control unit of the heating and curing mold includes a zone temperature measurement subunit, a thermal reaction model subunit, and a precision adjustment subunit. The zone temperature measurement subunit independently measures the temperature of the preheating section, gel section, curing section, and post-curing section using thermocouples, with an acquisition accuracy of ±0.3℃. The thermal reaction model subunit dynamically generates a temperature gradient curve based on the resin type and real-time temperature data. The precision adjustment subunit adjusts the temperature of each area according to the curve using an electric heating or oil heating system to ensure uniform resin curing.

7. An automated pultrusion molding production line for a carding machine cover plate according to claim 4, characterized in that, The main and auxiliary traction coordination control unit is electrically connected to the tracked traction machine and the auxiliary traction machine, and includes a synchronization control subunit, a switching control subunit and a positioning subunit; the synchronization control subunit uses multi-motor synchronization technology to keep the main and auxiliary traction machines at the same linear speed before cutting to stabilize the profile tension; The switching control subunit triggers a mode switch during cutting, allowing the main traction machine to run continuously while the auxiliary traction machine independently clamps the workpiece. The positioning subunit provides a ±0.02mm-level positioning reference for the CNC machining center through the end face positioning mechanism clamped by the auxiliary traction machine.

8. An automated pultrusion molding production line for a carding machine cover plate according to claim 7, characterized in that, The CNC machining center integrates a machining path adaptive unit, including a 3D scanning subunit, a deviation comparison subunit, and a path generation subunit; the 3D scanning subunit obtains the actual geometric parameters of the semi-finished product after cutting through a laser scanner. The deviation comparison subunit compares the actual parameters with the design model and extracts the shape and position deviations; the path generation subunit automatically generates a compensation machining path based on the deviation data and the positioning reference of the auxiliary traction machine, and completes the machining of the mounting holes and slots in one go, eliminating secondary clamping errors.

9. An automated pultrusion molding production line for a carding machine cover plate according to claim 4, characterized in that, It also includes a quality traceability and optimization unit, which is linked with a multi-source data acquisition unit and a central collaborative scheduling unit. This unit consists of an online detection subunit, a data storage subunit, and a parameter optimization subunit. The online detection subunit detects the dimensional accuracy, surface flatness, and internal density of the finished cover plate. The data storage subunit records the full-process operation parameters and test results for each batch, establishing a product quality database. Based on the database data, the parameter optimization subunit optimizes the fiber tension setpoint, mold temperature curve, and traction speed parameters through reinforcement learning algorithms to achieve continuous improvement in product quality.

10. An automated pultrusion molding production line for a carding machine cover plate according to claim 4, characterized in that, The central collaborative scheduling unit integrates equipment linkage control modules, including a task scheduling subunit, a communication subunit, and a status monitoring subunit. The task scheduling subunit issues collaborative instructions according to the production process. The communication subunit adopts a communication protocol that integrates programmable logic controllers and industrial IoT, with data interaction latency between devices ≤100ms. The status monitoring subunit displays the equipment operating status in real time, and automatically triggers a shutdown warning and pushes fault location information when an anomaly is detected, ensuring production continuity.

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