Polyamide fdy 20d hot melt yarn warping equipment and process thereof
By optimizing the structure and process parameters of the warping equipment, the problems of adhesion and breakage of nylon fine denier hot melt yarn during the warping process were solved, achieving efficient and reliable hot melt yarn winding, and improving production efficiency and warp beam quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGLE HENGSHEN SYNTHETIC FIBER
- Filing Date
- 2023-05-31
- Publication Date
- 2026-06-26
AI Technical Summary
Existing warping equipment and processes cannot meet the production requirements of fine denier nylon hot melt yarn, resulting in problems such as yarn adhesion, breakage, and friction damage, which affect production efficiency and warp beam quality.
By employing specific equipment structures and process parameters, including the configuration of yarn frames, yarn collecting plates, pneumatic long strip clamps, and yarn separating needle assemblies, combined with tension adjustment and tension control, the yarn is ensured to remain taut during the warping process, reducing contact points and friction, and preventing yarn sticking and breakage.
It achieves efficient warping of 20D specification nylon hot melt yarn, reduces breakage rate and manual labor intensity, and improves production efficiency and warp beam quality.
Smart Images
Figure CN116876133B_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to the field of filament warping technology, specifically to a warping equipment and process for nylon FDY20D hot melt yarn. [Background Technology]
[0002] Warping is an important pre-weaving process. It involves winding the warp yarns from the package yarns onto a warp beam with appropriate and uniform tension, according to the total number of warp threads, length, and width specified in the warping process design. The purpose of warping is to change the yarn package form, transforming a single-yarn package into a multi-yarn package with a preliminary warp beam shape. The quality of the warp beam directly affects the efficiency and quality of downstream weaving. Currently, high-end warping machines from abroad have fast winding speeds, high production efficiency, and good density uniformity. Domestic warping machines of the same type consist of a yarn frame, yarn collecting plate, balance roller, oiling roller, and machine head, and can basically meet the warping production needs of conventional nylon, polyester, and other filaments. However, the innovative application and development of nylon fine denier hot melt yarn in the filament field in the past year or two has put forward higher requirements for the warping process. The characteristics of hot melt yarn are quite different from those of conventional nylon, polyester and other filaments. It has a lower melting point and softens and melts to bond with other fibers after a certain temperature. The yarn itself has the characteristics of "high oil content, surface adhesion, low strength and easy breakage".
[0003] Therefore, existing warping equipment and processes cannot meet or be suitable for the warping production of hot melt yarn, mainly due to the following problems:
[0004] 1. The configuration of the balance roller causes adjacent yarns to stick together after the hot melt yarn passes through, resulting in yarn breakage when passing through the next yarn separating needle. Once the yarn breaks, it will cause more yarn to become tangled, resulting in longer downtime, reduced production capacity, and reduced warp beam quality.
[0005] 2. After the existing warping machine is finished with the yarn attached, the yarn is in a slack state, which can easily cause adjacent yarns to stick together. When the machine is restarted, a large number of yarns will break when they pass through the yarn separating needle.
[0006] 3. In existing warping machines, the yarn is unwound from the yarn frame onto the warp beam. There are too many contact points along the path, resulting in greater additional friction. Fine denier hot melt yarn is easily damaged, causing fuzz and breakage, which in turn leads to a decrease in the quality of the warp beam.
[0007] 4. Due to the inherent characteristics of hot melt yarn, once the yarn breaks during warping, it is almost impossible to find the broken end on the warp beam. This makes it impossible to tie the yarn during yarn straightening, causing problems in downstream weaving and reducing the quality of the greige fabric. [Summary of the Invention]
[0008] One of the technical problems to be solved by the present invention is to provide a warping equipment for nylon FDY20D hot melt yarn, which realizes the warping of nylon hot melt yarn 20D specification yarn, and has the advantages of simple winding control, durability and reliability. It also reduces the intensity of manual labor and greatly improves production efficiency and warp beam quality.
[0009] The present invention achieves one of the above-mentioned technical problems in the following way:
[0010] A warping device for nylon FDY20D hot melt yarn, characterized in that: the hot melt yarn warping device includes a yarn frame, a yarn collecting plate, a first pneumatic long strip clamp, a yarn separating needle assembly, a second pneumatic long strip clamp, and a warping head, wherein the yarn frame, yarn collecting plate, first pneumatic long strip clamp, yarn separating needle assembly, second pneumatic long strip clamp, and warping head are arranged sequentially from right to left;
[0011] Each spindle of the yarn frame is equipped with a KFD yarn tension regulator at its front end; the warping head is equipped with a main yarn separating needle and a yarn guide roller;
[0012] The first pneumatic long strip clamp and the second pneumatic long strip clamp each include a support plate, two cylinders, an upper pressure plate and a rubber pad. The two cylinders are located at both ends of the support plate. The two ends of the upper pressure plate are respectively mounted on the two cylinders and connected to the push rods of the two cylinders. The rubber pad is located at the lower end of the upper pressure plate.
[0013] The distance between the yarn frame and the warping head is 6-10m; the distance between the second pneumatic long strip clamp and the main yarn separating needle is 50-80cm.
[0014] Furthermore, the yarn separating needle assembly includes yarn separating needles arranged in two layers, upper and lower.
[0015] Furthermore, a sliding wheel is provided at the bottom of the support column below the support plate, and each sliding wheel is also provided with a brake pad.
[0016] Furthermore, the distance between the yarn frame and the yarn collecting plate is 3-5m.
[0017] Furthermore, the distance between the yarn collecting plate and the yarn separating needle assembly is 2-3m.
[0018] The second technical problem to be solved by this invention is to provide a warping process for nylon FDY20D hot melt yarn, which realizes the warping of nylon hot melt yarn 20D specification yarn, and has the advantages of simple winding control, durability and reliability, while also reducing the intensity of manual labor and greatly improving production efficiency and warp beam quality.
[0019] The present invention achieves the second technical problem mentioned above in the following way:
[0020] A warping process for nylon FDY20D hot melt yarn, the steps of which are as follows:
[0021] Step 1: Set the warping parameters: warping speed 200-300 m / min, warping tension 2.5-3 g, warping density controlled at 0.5-0.6 g / cm³. 3 Unwinding angle: 270-360 degrees; temperature: 24-26 degrees; humidity: 65%-75%; keep the yarn taut throughout the unwinding process, and keep the yarn taut even when changing the coil.
[0022] Step 2: Hang the spindle on the yarn rack, and then pull the yarn in the following order: spindle, KFD yarn tension regulator, yarn collecting plate, first pneumatic long strip clamp, yarn separating needle assembly, second pneumatic long strip clamp, main yarn separating needle, guide roller and spool, and rotate the KFD wrap angle to 270-360 degrees.
[0023] Step 2: After the yarn is straightened, set the warping speed to 50-100m / min and start the machine slowly. Then check whether the tension of each yarn is consistent. After eliminating any abnormalities, proceed with the warping according to the parameters set in Step 1.
[0024] Step 3: When the yarn head reaches the shutdown condition, the equipment stops. After securing the yarn with tape, use the first and second pneumatic long strip clamps to press the yarn tight and keep it taut. Then cut the yarn between the yarn head and the guide roller to complete the yarn drop action, and then replace it with the next yarn head.
[0025] Furthermore, the setting of warping parameters in step 1 also includes: yarn separation method: double layers, with an interval of more than 2 stitches.
[0026] The present invention has the following advantages:
[0027] The hot melt yarn warping equipment of this invention has a reasonable structure, enabling the warping of 20D nylon hot melt yarn, reducing the problem of hot melt yarn breakage, reducing manual labor intensity, and greatly improving production efficiency. It ensures that the hot melt yarn maintains its tension state during warping head changes, preventing yarn adhesion and guaranteeing smooth warping of multiple warp heads. Simultaneously, as the yarn unwinds from the yarn frame onto the warp beam, the number of contact points along the path is reduced, resulting in less additional friction and significantly reducing damage to fine denier hot melt yarn, thus improving the quality of the warp beam.
[0028] In summary, this invention has the advantages of simple winding control, durability and reliability, and also reduces the intensity of manual labor, greatly improving production efficiency and warp quality. [Attached Image Description]
[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0030] Figure 1 This is a schematic diagram of a nylon FDY20D hot melt yarn warping device according to the present invention.
[0031] Figure 2 This is a schematic diagram of the pneumatic long strip clamping plate structure of a nylon FDY20D hot melt yarn warping equipment according to the present invention.
Detailed Implementation Methods
[0032] The following will be combined with the appendix Figure 1-2 The technical solution of the present invention will be clearly and completely described in detail with specific 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. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments used, unless otherwise specified, are all commercially available conventional products.
[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 the 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0035] See Figure 1-2 This invention relates to a warping device for nylon FDY20D hot melt yarn. The hot melt yarn warping device includes a yarn frame 1, a yarn collecting plate 2, a first pneumatic long strip clamping plate 3, a yarn separating needle assembly 4, a second pneumatic long strip clamping plate 5, and a warping head 6. The yarn frame 1, the yarn collecting plate 2, the first pneumatic long strip clamping plate 3, the yarn separating needle assembly 4, the second pneumatic long strip clamping plate 5, and the warping head 6 are arranged sequentially from right to left.
[0036] Each spindle 11 of the yarn frame 1 is equipped with a KFD yarn tension regulator 12 at its front end; the warping head 6 is equipped with a main yarn separating needle 61 and a yarn guide roller 62.
[0037] The first pneumatic long strip clamp 3 and the second pneumatic long strip clamp 5 each include a support plate 31, two cylinders 32, an upper pressure plate 33 and a rubber pad 34. The two cylinders 32 are disposed at both ends of the support plate 31. The two ends of the upper pressure plate 33 are respectively mounted on the two cylinders 32 and connected to the push rods 35 of the two cylinders 32. The rubber pad 34 is disposed at the lower end of the upper pressure plate 31.
[0038] The distance between the yarn frame 1 and the warping head 6 is 6-10m; the distance between the second pneumatic long strip clamp 5 and the main yarn separating needle 61 is 50-80cm.
[0039] In a preferred embodiment, the yarn separating needle assembly 2 includes yarn separating needles arranged in two layers, upper and lower.
[0040] In a preferred embodiment, the bottom of the support column 36 below the support plate 31 is provided with a sliding wheel 37, and each sliding wheel 37 is also provided with a brake pad.
[0041] In a preferred embodiment, the distance between the yarn frame 1 and the yarn collecting plate 2 is 3-5m.
[0042] In a preferred embodiment, the distance between the yarn collecting plate 2 and the yarn separating needle assembly 4 is 2-3m.
[0043] This invention also relates to a warping process for nylon FDY20D hot melt yarn based on the aforementioned nylon FDY20D hot melt yarn warping equipment, wherein the hot melt yarn warping process steps are as follows:
[0044] Step 1: Set the warping parameters: warping speed 200-300 m / min, warping tension 2.5-3 g, warping density controlled at 0.5-0.6 g / cm³. 3 Unwinding angle: 270-360 degrees; temperature: 24-26 degrees; humidity: 65%-75%; keep the yarn taut throughout the unwinding process, and keep the yarn taut even when changing the coil.
[0045] Step 2: Hang the spindle on the yarn rack, and then pull the yarn in the following order: spindle, KFD yarn tension regulator, yarn collecting plate, first pneumatic long strip clamp, yarn separating needle assembly, second pneumatic long strip clamp, main yarn separating needle, guide roller and spool, and rotate the KFD wrap angle to 270-360 degrees.
[0046] Step 2: After the yarn is straightened, set the warping speed to 50-100m / min and start the machine slowly. Then check whether the tension of each yarn is consistent. After eliminating any abnormalities, proceed with the warping according to the parameters set in Step 1.
[0047] Step 3: When the yarn head reaches the shutdown condition, the equipment stops. After securing the yarn with tape, use the first and second pneumatic long strip clamps to press the yarn tight and keep it taut. Then cut the yarn between the yarn head and the guide roller to complete the yarn drop action, and then replace it with the next yarn head.
[0048] The setting of warping parameters in step 1 also includes: yarn separation method: double layers, with an interval of more than 2 stitches.
[0049] In another embodiment of the present invention, the specific process is as follows:
[0050] 1. Set the basic warping conditions according to the table below. The weight of each warp head should be controlled within 30KG; balance time control: 8-24 hours, temperature: 24-26 degrees, humidity: 65%-75%; prepare for machine start-up.
[0051]
[0052] 2. Hang the raw yarn spindles on the yarn frame, and then manually pull the yarn in the following order: yarn frame spindle - KFD - yarn collecting plate - first pneumatic long strip clamp - yarn separating needle assembly - second pneumatic long strip clamp - main yarn separating needle - guide roller and coil head, and rotate the KFD covering angle to 360 degrees.
[0053] 3. After the yarn is sorted, according to the shutdown conditions set in step 1, first set the speed to 50-100m / min, start the machine slowly, and then use a needle-type tension monitor to check whether the tension of each yarn is consistent. If an abnormal tension yarn is found, find the yarn at the corresponding position and eliminate the abnormality (the whole process does not stop the machine) until all abnormalities are eliminated. The whole process is expected to take about 20 minutes.
[0054] 3.1 After completing the above steps, stop the machine while the yarn remains taut. Then, press the yarn (sheet yarn) with the auxiliary pneumatic long strip clamp, cut the yarn between the warp head and the guide roller, remove the yarn from the warp head, reset the warping machine to zero, and then start the machine.
[0055] 4. When the yarn head reaches the shutdown condition, the equipment stops. The yarn is manually secured with tape, and then the first and second pneumatic long strip clamps are used to press the yarn tight to keep it taut and prevent it from loosening and causing adjacent yarns to stick together. Then the yarn between the yarn head and the guide roller is cut to complete the yarn drop action, and then the next yarn head is replaced.
[0056] 5. Continue until the last warp head is completed; all warp data are shown in the table below;
[0057]
[0058] In summary, the present invention has the following advantages:
[0059] The hot melt yarn warping equipment of this invention has a reasonable structure, enabling the warping of 20D nylon hot melt yarn, reducing the problem of hot melt yarn breakage, reducing manual labor intensity, and greatly improving production efficiency. It ensures that the hot melt yarn maintains its tension state during warping head changes, preventing yarn adhesion and guaranteeing smooth warping of multiple warp heads. Simultaneously, as the yarn unwinds from the yarn frame onto the warp beam, the number of contact points along the path is reduced, resulting in less additional friction and significantly reducing damage to fine denier hot melt yarn, thus improving the quality of the warp beam.
[0060] In summary, this invention has the advantages of simple winding control, durability and reliability, and also reduces the intensity of manual labor, greatly improving production efficiency and warp quality.
[0061] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.
Claims
1. A warping device for nylon FDY20D hot melt yarn, characterized in that: The hot melt yarn warping equipment includes a yarn frame, a yarn collecting plate, a first pneumatic long strip clamp, a yarn separating needle assembly, a second pneumatic long strip clamp, and a warping head, which are arranged sequentially from right to left. Each spindle of the yarn frame is equipped with a KFD yarn tension regulator at its front end; the warping head is equipped with a main yarn separating needle and a yarn guide roller; The first pneumatic long strip clamp and the second pneumatic long strip clamp each include a support plate, two cylinders, an upper pressure plate and a rubber pad. The two cylinders are located at both ends of the support plate. The two ends of the upper pressure plate are respectively mounted on the two cylinders and connected to the push rods of the two cylinders. The rubber pad is located at the lower end of the upper pressure plate. The distance between the yarn frame and the warping machine head is 6-10m; the distance between the second pneumatic long strip clamp and the main yarn separating needle is 50-80cm; The first pneumatic long strip clamp and the second pneumatic long strip clamp are located on the front and rear sides of the yarn separating needle assembly, respectively. They are used to press the sheet-like hot melt yarn tightly when the equipment stops to replace the head, so that the hot melt yarn remains taut throughout the entire process of stopping to replace the head, in order to prevent adjacent yarns from sticking together due to the adhesive properties of the hot melt yarn surface.
2. The nylon FDY20D hot melt yarn warping equipment according to claim 1, characterized in that: The yarn separating needle assembly includes yarn separating needles arranged in two layers, upper and lower.
3. The nylon FDY20D hot melt yarn warping equipment according to claim 1, characterized in that: The bottom of the support column below the support plate is provided with a sliding wheel, and each sliding wheel is also provided with a brake pad.
4. The nylon FDY20D hot melt yarn warping equipment according to claim 1, characterized in that: The distance between the yarn frame and the yarn collecting plate is 3-5m.
5. The nylon FDY20D hot melt yarn warping equipment according to claim 1, characterized in that: The distance between the yarn collecting plate and the yarn separating needle assembly is 2-3m.
6. A warping process for nylon FDY20D hot melt yarn, characterized in that: The hot melt yarn warping process is carried out on a nylon FDY20D hot melt yarn warping device according to any one of claims 1-5; the steps of the hot melt yarn warping process are as follows. Step 1: Set the warping parameters: warping speed 200-300 m / min, warping tension 2.5-3 g, warping density controlled at 0.5-0.6 g / cm³. 3 Unwinding angle: 270-360 degrees; temperature: 24-26 degrees; humidity: 65%-75%; keep the yarn taut throughout the unwinding process, and keep the yarn taut even when changing the coil. Step 2: Hang the spindle on the yarn rack, and then pull the yarn in the following order: spindle, KFD yarn tension regulator, yarn collecting plate, first pneumatic long strip clamp, yarn separating needle assembly, second pneumatic long strip clamp, main yarn separating needle, guide roller and coil head, and rotate the KFD wrap angle to 270-360 degrees. Step 3: After the yarn is straightened, set the warping speed to 50-100m / min and start the machine slowly. Then check whether the tension of each yarn is consistent. After eliminating any abnormalities, perform warping according to the parameters set in Step 1. Step 4: When the yarn head reaches the shutdown condition, the equipment stops. After securing the yarn with tape, use the first and second pneumatic long strip clamps to press the yarn tight and keep it taut. Then cut the yarn between the yarn head and the guide roller to complete the yarn drop action, and then replace it with the next yarn head.
7. The warping process for nylon FDY20D hot-melt yarn according to claim 6, characterized in that: The setting of warping parameters in step 1 also includes: yarn separation method: double layers, with an interval of more than 2 stitches.