Opening weft insertion device for producing multi-layer broadened fabric

Abstract

The invention discloses an opening weft insertion device for producing a multi-layer broadened fabric, and belongs to the technical field of textile machinery. The opening and weft insertion device comprises an opening device, a weft insertion device and a central control device in communication connection with the opening device and the weft insertion device, and the opening device comprises multiple layers of warp control mechanisms and broadening control mechanisms arranged on the two sides of warp and used for controlling opening and closing of the warp; the weft insertion device comprises an automatic weft insertion mechanism and a weft yarn tension control mechanism and is used for controlling the introduction path, sequence and tension of weft yarns. According to the opening weft insertion device for producing the multi-layer broadened fabric, the technical problems of insufficient weaving precision and poor adaptability are solved, the device can automatically adapt to fabrics of different materials and thicknesses in the production process of the multi-layer fabric, the production efficiency is improved, and human intervention is reduced.

Description

Technical Field

[0001] The invention specifically relates to an open weft insertion device for producing multi-layer widened fabrics, and belongs to the technical field of textile machinery. Background Art

[0002] Multilayer spread fabrics are composed of multiple fiber layers and have distinct layers. These layers can be relatively independent or interconnected through a specific weaving method to form a more complex fabric structure. Multilayer spread fabrics are a type of fabric that is widely used in the textile field. Due to their unique structure and performance advantages, they have been widely used in many industries and fields. Multilayer spread fabrics are used in the industrial field for conveyor belts, industrial filter belts, etc. Composite materials prepared with multilayer spread fabrics as preforms are widely used in the aerospace field, such as rocket nozzles, aircraft brake discs, etc.

[0003] In the production process of multi-layer widened fabrics, the warp and weft arrangement of the fabrics is more complicated, and both weaving efficiency and product quality face severe challenges. Most of the existing multi-layer fabric weaving equipment relies on traditional mechanical opening mechanisms, which have limited adjustment accuracy and cannot achieve precise control of different fabric thicknesses or layers, resulting in fabrics being easily misaligned, overlapped, and having unstable quality during the multi-layer weaving process.

[0004] When the existing equipment runs at high speed for a long time, the opening mechanism and the weft insertion device wear out quickly, resulting in reduced production efficiency and increased equipment maintenance costs. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the present invention provides an open weft insertion device for producing multi-layer widened fabrics, which can efficiently and accurately assist the widening weaving process of multi-layer fabrics through the coordinated work of the opening mechanism, the weft insertion mechanism and the central control unit, thereby improving the quality and production efficiency of the fabrics, enhancing the adaptability of the equipment to different materials and thicknesses during the production process, improving the overall production efficiency, and reducing the impact of human intervention and operational errors.

[0006] The technical solution is as follows:

[0007] An open weft insertion device for producing multi-layer widened fabrics, comprising:

[0008] An opening device, used to control the opening and closing of the warp yarns, comprises a multi-layer warp yarn control mechanism and a width control mechanism arranged on both sides of the warp yarns;

[0009] A weft insertion device, used to control the weft introduction path, sequence and tension, which includes an automatic weft insertion mechanism and a weft tension control mechanism;

[0010] The central control device is used to monitor the tension, opening angle and weft insertion speed of the fabric in real time; the central control device is connected to the opening device and the weft insertion device in communication. The state of the fabric is monitored by the sensor and monitoring unit of the central control device, and the tension, opening angle and weft insertion sequence of the warp and weft yarns are automatically adjusted according to the characteristics of fabrics of different types, thicknesses and widths.

[0011] Furthermore, the multi-layer warp yarn control mechanism can independently adjust the tension and arrangement of different layers of warp yarns to ensure that the opening of the fabric is uniform and stable. The multi-layer warp yarn control mechanism is provided with a plurality of independent tension regulators, each first tension regulator controls the tension of a layer of warp yarns, and the first tension regulator is connected to the driving end of the stepper motor. The multi-layer warp yarn control mechanism is also provided with a first transmission tension sensor, and the feedback warp yarn tension information is transmitted to the central control device.

[0012] Furthermore, the multi-layer warp yarn control mechanism is also provided with an optical sensor.

[0013] Furthermore, the width control mechanism is provided with a plurality of guide rails and tension adjustment rods.

[0014] Furthermore, the widening control mechanism is communicatively connected with the central control device.

[0015] Furthermore, the automatic weft insertion mechanism is connected to the multi-axis stepper motor, and the weft insertion trajectory is controlled by the multi-axis stepper motor, and the introduction sequence of the weft yarns is automatically adjusted according to the opening position of each layer of warp yarns.

[0016] Furthermore, the weft yarn tension control mechanism is provided with a plurality of independent tension sensors and regulators, which adjust the tension of the weft yarn in real time according to the movement of the weft yarn in the fabric.

[0017] Furthermore, the central control device includes a sensor and monitoring unit, a data processing unit and an automatic feedback adjustment unit; the sensor and monitoring unit is used to monitor the tension, opening angle, weft yarn path, and speed parameters of the fabric; the data processing unit is used to receive information from the sensor fed back by the sensor and monitoring unit, and analyze the width, tension and density information of the fabric in real time through an algorithm; the automatic feedback adjustment unit is used to adjust the working status of the opening mechanism and the weft insertion mechanism based on the data monitored in real time based on the analysis results of the data processing unit.

[0018] Furthermore, it is also equipped with an alarm. When an abnormal situation is detected, the system will remind the operator through the alarm device, or automatically stop the equipment operation according to the preset safety mechanism.

[0019] Furthermore, it also includes an environmental monitoring mechanism for monitoring temperature and humidity to ensure that the fabric is woven under suitable environmental conditions and reduce the impact of environmental changes on fabric tension and weaving accuracy.

[0020] The beneficial effects of the present invention include at least:

[0021] 1. The multi-layer warp yarn control mechanism and width control mechanism of the opening device effectively solve the technical problems of uneven opening of multi-layer fabrics and difficulty in introducing weft yarns, and improve the weaving accuracy and stability of the fabric.

[0022] 2. Through the automatic adjustment and intelligent feedback mechanism of the central control device, the opening device and the weft insertion device, the technical problems of insufficient weaving precision and poor adaptability are solved, so that the device can automatically adapt to fabrics of different materials and thicknesses during the production process of multi-layer fabrics, thereby improving production efficiency and reducing human intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 1 is a schematic diagram of the overall structure of an open weft insertion device for producing multi-layer widened fabrics according to an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A schematic diagram of the structure of the central control device in FIG.

[0026] Description of reference numerals:

[0027] 1. Opening device; 11. Multi-layer warp yarn control mechanism; 12. Width control mechanism; 13. First tension regulator; 14. First tension sensor; 15. Stepper motor; 16. Optical sensor; 17. Guide rail; 19. Tension adjustment rod; 18. Second tension sensor;

[0028] 2. Central control device; 21. Sensor and monitoring unit; 22. Data processing unit; 23. Feedback adjustment unit;

[0029] 3. Weft insertion device; 31. Automatic weft insertion mechanism; 32. Weft tension control mechanism; 33. Automatic weft insertion trajectory adjustment module; 34. Third sensor; 35. Fourth sensor; 36. Second tension regulator;

[0030] 4. Environmental monitoring module; 5. Alarm; DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Embodiment 1

[0033] See also Figure 1 The present embodiment provides an open weft insertion device for producing multi-layer widened fabrics, including an opening device 1 and a weft insertion device 2 respectively connected to a central control device 3, which can efficiently and accurately assist the widening weaving process of the multi-layer fabrics, thereby improving the quality and production efficiency of the fabrics.

[0034] In this embodiment, the opening device 1 is used to control the opening and closing of the warp yarns to ensure the weaving accuracy of the multi-layer fabric. The opening device 1 includes a multi-layer warp yarn control unit 11 and a width control mechanism 12 installed on both sides of the warp yarns. The multi-layer warp yarn control mechanism and the width control mechanism of the opening device effectively solve the technical problems of uneven opening of the multi-layer fabric and difficulty in introducing the weft yarns, and improve the weaving accuracy and stability of the fabric.

[0035] The multi-layer warp yarn control mechanism 11 is provided with a plurality of independent tension regulators, each of which is Figure 1 The first tension regulator 13 in the multi-layer warp yarn control mechanism controls the tension of a layer of warp yarn. Each tension regulator 13 is connected to the driving end of the stepper motor. When it is detected that the tension of a certain layer is abnormal or the opening is insufficient, the tension of the corresponding layer is automatically adjusted by the stepper motor 15 to ensure the stability during the weaving process. The first tension sensor 14 is installed on the multi-layer warp yarn control mechanism 11, and the feedback warp yarn tension information is transmitted to the central control device 2. The central control device 2 adjusts the tension of the warp yarn in real time based on the feedback information to ensure that the opening height of the warp yarns at different levels remains consistent. The multi-layer warp yarn control mechanism is also provided with an optical sensor 16, which can detect the arrangement state of each layer of warp yarn to ensure that the opening is clear and without confusion.

[0036] The width control mechanism 12 is provided with a plurality of guide rails 17 and tension adjustment rods 19 to achieve the widening effect. The width control mechanism 12 is used to automatically adjust the tension of the warp yarn according to the fabric width to ensure that the fabric does not curl or overstretch when widening. The width control mechanism 12 is connected to the central control device 2 for communication. The sensor provided on the opening device 1 detects the warp yarn tension and feeds back to the central control device for control, so as to adjust the widening angle and tension in real time.

[0037] Operation process of the opening device 1: At the beginning of weaving, the initial tension parameters are set according to the thickness, number of layers and material of the fabric. The warp yarns enter the opening area through the first regulator 13, and the sensor on the opening device 1 monitors the tension of each layer in real time to ensure that all warp yarns are opened evenly. When it is detected that the tension of a layer is abnormal or the opening is insufficient, the tension of the corresponding layer is automatically adjusted by the stepper motor 15 to ensure stability during the weaving process.

[0038] In this embodiment, the weft insertion device 3 is used to achieve accurate weft insertion of multi-layer fabrics by controlling the weft insertion path, sequence and tension. The weft insertion device 3 includes an automatic weft insertion mechanism 31 and a weft tension control mechanism 32.

[0039] The automatic weft insertion mechanism 31 uses a multi-axis stepper motor to control the movement trajectory of the weft yarn, and automatically adjusts the weft yarn introduction order according to the opening position of each layer of warp yarn. The automatic weft insertion mechanism 31 detects the weft yarn introduction trajectory based on the state of the warp yarn opening through a sensor set on the weft insertion device 3 to ensure that the weft yarn can accurately enter different fabric layers.

[0040] The weft tension control mechanism 32 uses multiple independent second tension sensors 18 and regulators to adjust the tension of the weft in real time according to the movement of the weft in the fabric. The weft tension control mechanism 32 can adjust the tension of the weft in different fabric layers so that the weft is tightly combined with the warp to avoid the weft being too tight or loose, which affects the structural stability of the fabric. Among them, the second tension sensor 18 is set on the weft insertion device 3. The second tension sensor 18 is used to sense the slight changes in the weft tension to ensure that the tension of the weft remains consistent when passing through different layers of fabric.

[0041] Operation process of the weft insertion device: After the device is started, the weft insertion path and tension parameters are set according to the width, number of layers and thickness of the fabric. According to the opening of the multi-layer warp yarn, the weft insertion sequence and path are adjusted by the automatic weft insertion mechanism 31 to ensure that the weft yarn passes smoothly through each opening without interfering with other weft yarns; the weft yarn tension control mechanism 32 monitors the tension change of the weft yarn in real time. If there is uneven tension or obstruction of the weft yarn, the weft insertion device automatically adjusts the tension and recalculates the weft yarn path to ensure a smooth weft insertion process.

[0042] The central control device 2 includes a sensor and monitoring unit 21, a data processing unit 22 and a feedback adjustment unit 23, which comprehensively controls the operation of the opening device 1 and the weft insertion device 3.

[0043] The sensor and monitoring unit 21 monitors the tension, opening angle, weft yarn path, speed and other parameters of the fabric. Multiple sets of sensors installed on the opening device 1 and the weft insertion mechanism 3 transmit the data to the central control device 2 in real time. The sensor and monitoring unit 21 is provided with a sensor detection component for monitoring the operation status of the equipment and the change of fabric tension. When an abnormality occurs, such as excessive tension or incomplete opening, the device operation is automatically stopped and an alarm signal is issued.

[0044] The data processing unit 22 is used to analyze the current weaving state in real time based on the information fed back by the sensor and monitoring unit 21. The data processing unit 22 has a built-in processing unit built-in algorithm, which calculates the optimal tension, opening angle, weft insertion sequence and other parameters through the built-in processing unit algorithm, and automatically sends adjustment instructions to the opening device 1 and the weft insertion machine device 3. This algorithm is an existing textile parameter optimization algorithm based on numerical analysis and heuristic search. First, according to the technical specifications and historical experience of textile machinery, the initial range of parameters such as tension, opening angle and weft insertion sequence is set. The second step is to perform numerical analysis on each parameter to determine its influence trend on performance indicators such as fabric quality and production efficiency. The third step is to use a heuristic search algorithm to find the optimal solution within the parameter range. The fourth step is to perform performance evaluation on the parameter combination obtained in each iteration, including fabric quality, production efficiency, energy consumption, etc. Finally, when the heuristic search algorithm meets the stopping condition (such as the number of iterations, performance improvement, etc.), the optimal parameter combination is output. The specific introduction of the algorithm can be found in the introduction in "Wang Cong, & Mathematics. Expected Approximate Error Analysis of Random Heuristic Search Algorithm. (Doctoral dissertation)".

[0045] When the data processing unit 22 detects an abnormal situation, such as excessive tension or weft yarn introduction failure, the system will alert the operator through an alarm device, or automatically stop the device according to a preset safety mechanism. The device is provided with an alarm 5, and when an abnormal situation is detected, the system will alert the operator through an alarm, or automatically stop the device according to a preset safety mechanism.

[0046] The feedback adjustment unit 23 is used to adjust the working state of the opening device 2 and the weft insertion device 3 according to the real-time monitoring data. When the warp tension is abnormal, the tension of the warp is adjusted by adjusting the widening control mechanism 12; when the weft introduction is blocked, the weft introduction path is recalculated. The calculation process is as follows: first, when the monitoring data shows that the weft is not correctly introduced or the introduction speed is abnormal, it is judged that the weft introduction is blocked. Then, the parameter information such as the weft tension, opening angle, and weft insertion speed when blocked is collected. Based on the collected information, the possible reasons for the blockage are analyzed, such as excessive weft tension, inappropriate opening angle, wrong weft insertion sequence, etc. According to the cause of the blockage, the tension of the weft is adjusted to keep it within a suitable range. The opening angle is optimized to ensure that the weft can smoothly pass through the warp gap. If the blockage is caused by an error in the weft insertion sequence, the weft insertion sequence is replanned. Based on the adjusted parameters, the weft introduction path is recalculated. This may require consideration of factors such as the elasticity of the weft, the arrangement of the warp, and the motion law of the loom. Finally, according to the recalculated introduction path, the relevant settings of the textile machinery are adjusted. After ensuring that all parameters and settings are correct, restart the weft insertion process.

[0047] The feedback adjustment unit 23 can also automatically optimize the weaving parameters according to the characteristics of fabrics of different materials, layers and widths, to ensure that the production process of the fabrics is stable and reliable.

[0048] In actual production, the open weft insertion device for producing multi-layer widened fabrics of the present invention can be applied to the production of fabrics of various materials and types, and is particularly suitable for the following fields:

[0049] Weaving of heavy fabrics: This device can effectively solve the problems of uneven tension and difficulty in introducing weft yarns during the weaving process of multi-layer heavy fabrics, and improve the weaving quality of heavy fabrics.

[0050] Weaving of wide fabrics: Through the width control mechanism 12 and the central control device 2, the present invention can ensure uniform tension of wide fabrics, avoid edge curling and weft yarn misalignment problems, and is suitable for the production of wide industrial fabrics.

[0051] Weaving of composite materials: This device can also be used in the production of multi-layer composite fabrics, especially special textiles that require high-precision control.

[0052] In summary, the open weft insertion device for producing multi-layer widened fabrics of the present invention can be applied to the efficient weaving of multi-layer fabrics, especially in the fields of industrial textiles, composite materials, heavy fabrics, wide fabrics, etc. The device can significantly improve the production efficiency and quality of fabrics, and meet the production requirements of high-precision, multi-layer fabrics in the modern textile industry.

[0053] Embodiment 2

[0054] This embodiment provides an open weft insertion device for producing multi-layer widened fabrics. The difference from the first embodiment is that this embodiment is also provided with an environmental monitoring module 4 for monitoring temperature and humidity to ensure that the fabric is woven under suitable environmental conditions and reduce the impact of environmental changes on fabric tension and weaving accuracy.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An open weft insertion device for producing multi-layer widened fabrics, characterized in that: include: An opening device, used to control the opening and closing of the warp yarns, comprises a multi-layer warp yarn control mechanism and a width control mechanism arranged on both sides of the warp yarns; A weft insertion device, used to control the weft introduction path, sequence and tension, which includes an automatic weft insertion mechanism and a weft tension control mechanism; Central control device for real-time monitoring of fabric tension, opening angle and weft yarn introduction speed; The central control device is communicatively connected with the opening device and the weft insertion device respectively.

2. The open weft insertion device according to claim 1, characterized in that: The multi-layer warp yarn control mechanism is provided with a plurality of independent tension regulators, each first tension regulator controls the tension of a layer of warp yarn, the first tension regulator is connected to the driving end of the stepper motor, and the multi-layer warp yarn control mechanism is also provided with a first tension sensor, and the feedback warp yarn tension information is transmitted to the central control device.

3. The open weft insertion device according to claim 2, characterized in that: The multi-layer warp yarn control mechanism is further provided with an optical sensor.

4. The open weft insertion device according to claim 1, characterized in that: The width expansion control mechanism is provided with a plurality of guide rails and a tension adjustment rod.

5. The open weft insertion device according to claim 4, characterized in that: The width expansion control mechanism is communicatively connected with the central control device.

6. The open weft insertion device according to claim 1, characterized in that: The automatic weft insertion mechanism is connected to a multi-axis stepping motor.

7. The open weft insertion device according to claim 1, characterized in that: The weft yarn tension control mechanism is provided with a plurality of independent tension sensors and regulators, and the tension of the weft yarn is adjusted in real time according to the movement of the weft yarn in the fabric.

8. The open weft insertion device according to claim 1, characterized in that: The central control device includes a sensor and monitoring unit, a data processing unit and an automatic feedback adjustment unit; the sensor and monitoring unit is used to monitor the tension, opening angle, weft yarn path, and speed parameters of the fabric; the data processing unit is used to receive information from the sensor fed back by the sensor and monitoring unit, and analyze the width, tension and density information of the fabric in real time through an algorithm; the automatic feedback adjustment unit is used to adjust the working status of the opening mechanism and the weft insertion mechanism based on the data monitored in real time by the analysis result of the data processing unit.

9. The open weft insertion device according to any one of claims 1 to 8, characterized in that: It also has an alarm.

10. The open weft insertion device according to any one of claims 1 to 8, characterized in that: It also has an environmental monitoring module.

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