A method of controlling drying and cutting of a tow

Abstract

The application relates to a kind of tow drying cutting control methods, and relates to the technical field of tow production, comprising the following steps: detecting the amount of tow on the drying machine chain plate;Judging step: judging which interval the amount of tow is in;Adjusting step, adjusting the speed of cutting knife according to the interval.The application has the advantage of reducing energy waste caused by frequent adjustment of cutting knife speed.

Description

Technical Field

[0001] This application relates to the technical field of filament production, and in particular to a method for controlling the drying and cutting of filaments. Background Technology

[0002] During the production of the drawing line, the filament bundle needs to be dried. When production is abnormal, the speed between the dryer chain and the cutting blade needs frequent adjustment to ensure production quality. Even during normal production, manual fine-tuning of the dryer chain speed is required to ensure the filament bundle reaches the required drying range and maintains uniform tension. However, frequent speed adjustments to the cutting blade cause fluctuating current, resulting in significant power consumption. Summary of the Invention

[0003] To address the shortcomings of existing technologies, one of the objectives of this application is to provide a method for controlling the drying and cutting of filament bundles, which has the advantage of reducing energy waste caused by frequent speed adjustments of the cutting blade.

[0004] The above-mentioned objective of this application is achieved through the following technical solution: A method for controlling the cutting of filament bundles during drying includes the following steps: detection step: detecting the amount of filament bundles on the dryer chain plate; judgment step: determining which range the amount of filament bundles falls into; adjustment step: adjusting the speed of the cutting blade according to the range.

[0005] By adopting the above technical solution, the speed of the cutting blade can be adjusted by the amount of filament during the production process, thereby reducing the energy waste caused by frequent speed adjustments of the cutting blade.

[0006] In a preferred embodiment, this application can be further configured such that: in the judgment step, the amount of filament is divided into three ranges, a slow range, a medium range, and a high range; in the adjustment step, when the amount of filament is not in the high range and the speed of the dryer chain plate is less than a preset value, the cutting knife runs at a slow speed.

[0007] By adopting the above technical solution, when the speed of the chain plate is less than the preset value during use, it indicates that the amount of filaments removed from the dryer per unit time is small, so the cutting knife runs slowly.

[0008] In a preferred embodiment, this application can be further configured such that, during the adjustment step, when the cutting blade is running at a slow speed, when the amount of filament on the dryer chain plate reaches the maximum value of the high-speed range, the cutting blade changes to running at a medium speed until the amount of filament on the dryer chain plate reaches the minimum value of the slow speed range, and when the amount of filament on the dryer chain plate reaches the minimum value of the slow speed range, the cutting blade runs at a slow speed.

[0009] By adopting the above technical solution, when the speed of the dryer chain plate is less than the preset value and the cutting knife runs at a slow speed, but the amount of filaments removed from the dryer per unit time is greater than the processing capacity of the cutting knife, the amount of filaments on the chain plate will gradually increase. When the amount of filaments increases to the maximum value of the high-speed range, the cutting knife changes to medium speed until the amount of filaments on the dryer chain plate reaches the minimum value of the slow speed range, and then changes to slow speed again. This can effectively reduce the probability of frequent speed changes of the cutting knife.

[0010] In a preferred embodiment, this application may be further configured to include a verification step in which the humidity of the filament bundle exiting the dryer is detected, and if the humidity does not meet the standard, the moving speed of the dryer chain plate is reduced.

[0011] By adopting the above technical solution, namely reducing the moving speed of the dryer chain plate when the humidity does not meet the standard, the filaments stay in the dryer for a longer time, thereby achieving a good drying effect.

[0012] In a preferred embodiment, this application may be further configured to include a post-drying step, which is located before the cutting step, wherein the filament bundle is dried in the post-drying step.

[0013] By adopting the above technical solution, the presence of a post-drying step enables the re-drying of yarn bundles that do not meet the humidity standards, thereby achieving a good drying effect.

[0014] In a preferred embodiment, this application may be further configured such that, in the post-drying step, a drying mechanism is employed, the drying mechanism including a drying component and a drying assembly, the drying component including a drying rack, a movable roller and a fixed roller, two fixed rollers being disposed on the drying rack, the movable roller being movable for adjusting the filament length between the two fixed rollers, and the drying assembly being used to dry the filament.

[0015] By adopting the above technical solution, that is, by adjusting the distance between the moving roller and the two fixed rollers, the length of the filament bundle can be adjusted, thereby extending the time of the filament bundle with non-standard humidity in the drying component, thus achieving a good drying effect.

[0016] In a preferred embodiment, this application can be further configured such that, in the post-drying step, the cutting blade operates at a slow speed, the drying assembly dries the filament bundle, and the moving roller moves to reduce the filament bundle length between the two fixed rollers to feed the cutting blade.

[0017] By adopting the above-mentioned technical solution, namely, the slow operation of the cutting blade, the residence time of filaments with humidity that do not meet the standard can be further extended at the drying component. Detailed Implementation

[0018] This application discloses a method for controlling the drying and cutting of filament bundles, including the following steps: Testing steps: Detect the amount of filament bundles on the dryer chain plate; Judgment Step: Determine which range the amount of filament bundle falls into. In the judgment step, the amount of filament bundle is divided into three ranges: slow range, medium range, and high range. The adjustment process involves adjusting the speed of the cutting blade according to the specified range. During this adjustment, when the amount of filaments is not in the high-speed range and the speed of the dryer chain plate is less than the preset value, the cutting blade operates at a slow speed. When the speed of the dryer chain plate is less than the preset value and the cutting blade is operating at a slow speed, the cutting blade switches to medium speed operation when the amount of filaments on the dryer chain plate reaches the maximum value of the high-speed range. This continues until the amount of filaments on the dryer chain plate reaches the minimum value of the slow speed range. Finally, the cutting blade operates at a slow speed. Verification steps: Detect the humidity of the filaments coming out of the dryer. If the humidity does not meet the standard, reduce the moving speed of the dryer chain plate. Post-drying step: The filament bundle is dried. In the post-drying step, a drying mechanism is used. The drying mechanism includes a drying frame, a moving roller, and a fixed roller. There are two fixed rollers and they are set on the drying frame. The moving roller is raised and lowered by a cylinder, a hydraulic cylinder, or an electric push rod. The moving roller is located between the two fixed rollers and can be moved to adjust the length of the filament bundle between the two fixed rollers. The drying component (such as a hot air dryer or a device that can blow out hot air) is used to dry the filament bundle. At this time, the cutting knife runs slowly, the drying component dries the filament bundle, and the moving roller moves to reduce the length of the filament bundle between the two fixed rollers to feed the cutting knife. Cutting step: Cut the filament bundle.

[0019] In this embodiment, the height of the fixed roller is higher than that of the chain plate.

[0020] In other embodiments, there may be multiple drying components, with the filaments passing sequentially through the fixed rollers and moving rollers of the multiple drying components.

[0021] It is worth noting that in this application, parameters such as interval, preset value, and speed can be set as needed, and the values ​​given in this application are only for illustrative purposes.

[0022] The implementation principle of this embodiment is as follows: In production, the filaments to be dried are placed in an S-shape on a chain plate. As the chain plate moves, the filaments on the chain plate enter the dryer. After being dried in the dryer, the filaments are removed from the dryer as the chain plate moves. By detecting the amount of filaments on the chain plate (e.g., 1-3 units of filaments is the slow speed range, 3-6 units of filaments is the medium speed range, and 6-9 units of filaments is the high speed range), when the moving speed of the chain plate is not less than a preset value (e.g., 3 units of speed), the slow speed range corresponds to the slow operation of the cutting blade, the medium speed range corresponds to the medium speed operation of the cutting blade, and the high speed range corresponds to the high speed operation of the cutting blade. Taking the cutting blade as a lifting type as an example, slow operation means the cutting blade runs 10 times in one unit of time, medium speed operation means the cutting blade runs 15 times in one unit of time, and high speed operation means the cutting blade runs 20 times in one unit of time. When the moving speed of the chain plate is less than the preset value, and the amount of filaments is not in the high speed range... In the high-speed range, the cutting blade operates at a slow speed. When the speed of the dryer chain plate is less than the preset value and the cutting blade operates at a slow speed, but the amount of filaments removed from the dryer per unit time is greater than the processing capacity of the cutting blade, the amount of filaments on the chain plate will gradually increase. When the amount of filaments increases to the maximum value of the high-speed range, the cutting blade switches to medium speed operation until the amount of filaments on the dryer chain plate reaches the minimum value of the slow speed range, at which point it switches back to slow speed operation. After the filaments are dried in the dryer, the humidity of the filaments is detected (e.g., manually). If the humidity does not meet the standard, the moving speed of the chain plate is reduced, and the moving roller moves down, so that the filaments passing between the two fixed rollers and the moving roller are approximately V-shaped, until the filaments with unacceptable humidity detach from the chain plate and move to the drying assembly for drying. During the cutting process, the moving roller gradually moves up, reducing the length of the filaments between the two fixed rollers, thereby feeding the cutting blade. At this time, the filaments with unacceptable humidity are still being dried at the drying assembly.

[0023] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for controlling the drying and cutting of filament bundles, characterized in that: The process includes the following steps: Detection step: Detect the amount of filament bundle on the dryer chain plate; Judgment step: Determine which range the amount of filament bundle falls into; Adjust the cutting speed according to the range.

2. The method for controlling the drying and cutting of a filament bundle according to claim 1, characterized in that: In the judgment step, the amount of filament bundle is divided into three ranges: slow speed range, medium speed range and high speed range. In the adjustment step, when the amount of filament bundle is not in the high speed range and the speed of the dryer chain plate is less than the preset value, the cutting knife runs at a slow speed.

3. The method for controlling the drying and cutting of filament bundles according to claim 2, characterized in that: During the adjustment process, when the cutting blade is running at a slow speed, when the amount of filaments on the dryer chain plate reaches the maximum value of the high-speed range, the cutting blade switches to medium speed until the amount of filaments on the dryer chain plate reaches the minimum value of the slow speed range. When the amount of filaments on the dryer chain plate reaches the minimum value of the slow speed range, the cutting blade runs at a slow speed.

4. The method for controlling the drying and cutting of a filament bundle according to claim 1, characterized in that: It also includes a verification step, in which the humidity of the filaments coming out of the dryer is tested. If the humidity does not meet the standard, the moving speed of the dryer chain plate is reduced.

5. The method for controlling the drying and cutting of a filament bundle according to claim 4, characterized in that: It also includes a post-drying step, which is located before the cutting step, in which the filament bundle is dried.

6. The method for controlling the drying and cutting of a filament bundle according to claim 5, characterized in that: In the post-drying step, a drying mechanism is used, which includes a drying component and a drying assembly. The drying component includes a drying rack, a moving roller, and a fixed roller. There are two fixed rollers and they are set on the drying rack. The moving roller is movable to adjust the length of the filament bundle between the two fixed rollers. The drying assembly is used to dry the filament bundle.

7. The method for controlling the drying and cutting of a filament bundle according to claim 6, characterized in that: In the post-drying step, the cutting blade runs slowly, the drying assembly dries the filament bundle, and the moving roller moves to reduce the length of the filament bundle between the two fixed rollers to feed the cutting blade.