Device and method for preparing pile-coated core wire

Abstract

The invention discloses a device and a method for preparing a pile-coated core wire, and belongs to the technical field of textile. In order to solve the problems that in the existing down-coated core yarn preparation process, down adhesion is not firm, the structure is not uniform and practicability is not achieved, a yarn placing device, a glue applying and draining device, a down coating device, a down filling machine and a yarn containing device are arranged, the down coating device comprises a down storage box and a cyclone generator, and the cyclone generator is combined to generate rotating airflow; and uniformly bonding the down feather with the central yarn. By accurately controlling the feeding and twisting process of the down feather, the down-coated core yarn can be continuously and uniformly prepared, and it is ensured that the down feather is uniformly and neatly distributed and tightly twisted, and the down feather has high strength and a controllable structure.

Description

Technical Field

[0001] This invention relates to an apparatus and method for preparing pile-covered core yarn, belonging to the field of textile technology. Background Technology

[0002] Down is the soft downy feathers that cover the bodies of waterfowl (such as ducks and geese), mainly distributed in their chest and abdomen. It is a natural insulating material; the three-dimensional structure of the down clusters can trap a large amount of still air, forming a highly efficient insulating layer, with a warmth retention capacity per unit weight far exceeding that of man-made materials. Its fluffy structure makes it extremely low in density, significantly lighter than cotton or synthetic fiber fillings for the same level of warmth. The microporous structure between the fibers regulates humidity, both blocking cold air and allowing moisture to escape from the skin, maintaining comfort and dryness. It can be folded and stored after compression, and quickly springs back to its original fluffy state after release, making it easy to carry and store. Down, with its unique biological structure, has become a natural material that balances lightweight, warmth, and durability. However, the smooth surface of down has a low coefficient of friction, making it prone to shedding during textile production. Therefore, down is currently only used as a filling material in the market, applying its cold-weather insulation properties to the textile industry.

[0003] Existing down-covered core yarn manufacturing technologies suffer from uncontrollable down structure, poor down adhesion, and impracticality in producing down-covered core yarns. Summary of the Invention

[0004] The purpose of this invention is to provide an apparatus and method for preparing down-covered core yarn, so as to solve the problems of poor down adhesion, uneven structure and lack of practicality in the existing down-covered core yarn preparation process, and to achieve the effect of continuous and uniform preparation of down-covered core yarn, ensuring that the down distribution is uniform and regular, the twisting is tight, the strength is high and the structure is controllable.

[0005] The technical solution of the present invention: An apparatus for preparing flocked core yarn, comprising: Yarn placement device, gluing and applying device, flocking device, flocking machine, and yarn storage device; The yarn placement device is used to place the center yarn; The adhesive application device is used to apply adhesive to the center yarn; The flocking device includes a flocking box and a cyclone generator. The flocking box has openings on the inlet side and the outlet side. The opening on the inlet side is used for the center yarn to enter the flocking box, and the opening on the outlet side is used to install the cyclone generator. The cyclone generator contains a through-hole for passing through the center yarn and generates a rotating airflow through the through-hole to draw in the down and bond it to the center yarn to form a down-covered core yarn. The down filling machine is connected to the down storage box and is used to provide down to the central yarn entering the down storage box; The yarn storage device is used to store the flocked core yarn.

[0006] Furthermore, the yarn placement device includes a tensioning roller, and the yarn collection device includes a collecting roller.

[0007] Furthermore, the glue application and grouting device includes a guide wheel, a pressure roller, a grouting roller, and a glue storage tank; the guide wheel adopts a V-shaped structure, the pressure roller is located slightly below the center of the glue storage tank, and the grouting roller is provided with a rectangular groove.

[0008] Furthermore, the lint storage box has openings at the center of the upper end of the front and back sides, and filter screens are installed on the openings.

[0009] Furthermore, the through-hole structure of the cyclone generator is a variable cross-section spiral structure that first narrows and then expands from the inlet to the outlet of the through-hole, with the inlet of the through-hole being narrow and the outlet being wide; an air inlet is provided on the side wall of the through-hole of the cyclone generator, which is used to connect an air compressor.

[0010] Furthermore, it also includes a collecting box, which is located on the outlet side of the collecting box. The collecting box has openings on the inlet and outlet side walls, respectively, and the cyclone generator is connected to the opening on the inlet side of the collecting box.

[0011] Furthermore, it also includes a down return machine, wherein the down return end of the down return machine is connected to the down collection box and the down exit end is connected to the down storage box, for sending the down in the down collection box into the down storage box.

[0012] A method for preparing flocked core yarn, based on the above-mentioned apparatus, includes the following steps: The center yarn is wound onto the yarn placement device, and the adhesive is applied to the surface of the center yarn through the glue application and dripping device, and the excess adhesive is dripped off. The down is fed into the down storage box by the down filling machine, and the down is attached to the surface of the central yarn passing through the down storage box; The rotating airflow generated by the cyclone generator binds and twists the down to the center yarn to form a down-covered core yarn, while blowing away excess or loose down. The yarn storage device stores the pile-covered core yarn.

[0013] Furthermore, the down blown out from the cyclone generator is collected by a down collection box, and the down collected by the down collection box is recycled to the down storage box by a down recycling machine.

[0014] Furthermore, the adhesive is selected from one of PVA water-soluble adhesive, PLA adhesive, and PCL adhesive.

[0015] The present invention has achieved the following beneficial effects: 1. This invention is the first in the field of down-covered core yarn preparation to utilize a cyclone generator. The rotating airflow generated by the spiral structure within the cyclone generator enhances the adhesion between the down and the core yarn. The rotating airflow not only ensures a uniform and regular distribution of down on the core yarn surface but also, through the bidirectional action of the airflow, improves the adhesion strength between the down and the yarn, effectively avoiding uneven down adhesion and thus significantly improving the quality and stability of the finished down-covered core yarn.

[0016] 2. This invention successfully achieves the recycling of down by combining a down recovery machine with a cyclone generator. Down that is not firmly adhered is blown into the down collection box by the airflow of the cyclone generator, and then recycled by the down recovery machine and transported back to the storage box. This recycling process reduces waste of down resources and improves the economic efficiency and resource utilization efficiency of production.

[0017] 3. This invention establishes a dynamic coupling control mechanism for the production process by precisely adjusting the operating parameters of the down filling machine, cyclone generator, and yarn storage device. When it is necessary to increase the production speed, the airflow speed of the cyclone generator and the down filling amount of the down filling machine are adjusted to ensure uniform down adhesion and tight twisting. This mechanism effectively guarantees the stable quality of the down-covered core yarn, avoids quality fluctuations caused by parameter mismatch, and improves the controllability of the production process.

[0018] 4. The materials used in this invention, such as the core yarn being cotton or wool, the adhesive being PVA water-soluble adhesive, and the down being natural down, are all biodegradable materials that meet modern environmental protection requirements. By using fully biodegradable materials, the resulting down-coated core yarn has good biodegradability, avoiding the environmental pollution problems caused by using synthetic non-biodegradable materials, conforming to sustainable development goals, and possessing strong environmental protection characteristics.

[0019] 5. The down-covered core yarn prepared by this invention maintains the mechanical strength of the core yarn portion while the down portion provides excellent warmth retention. The combination of these two aspects results in a final down-covered core yarn product that possesses both mechanical strength and excellent warmth retention, meeting the demands of high-performance textiles. This composite structural design not only enhances the functionality of the core yarn but also broadens its application range, making it particularly suitable for high-performance products requiring lightweight yet warm insulation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an apparatus for preparing flocked core yarn according to one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a cyclone generator according to one embodiment of the present invention; Figure 3 This is a schematic diagram of an apparatus for preparing a flocked core yarn according to another embodiment of the present invention; Explanation of reference numerals in the attached figures: 1: Tensioning roller; 2: Glue application and application device; 21: Guide wheel; 22: Pressure roller; 23: Glue application roller; 24: Glue storage box; 3: Down covering device; 31: Down storage box; 32: Cyclone generator; 321: Inlet; 322: Outlet; 323: Air inlet; 33: Down collection box; 4: Collection roller; 5: Down filling machine; 6: Down return machine; 7: Air compressor; 8: Center yarn; 9: Down; 10: Down covering core yarn. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be described in detail and completely below with reference to the accompanying drawings.

[0022] One embodiment of the present invention provides an apparatus for preparing flocked core yarn, such as... Figure 1 As shown. The device includes a yarn placement device, a gluing and applying device 2, a flocking device 3, a yarn collection device, a flocking machine 5, a flocking machine 6, and an air compressor 7. The yarn placement device uses a tension roller 1, but is not limited to this. The gluing and applying device 2 consists of a guide wheel 21, a pressure roller 22, a applying roller 23, and a glue storage box 24. The flocking device 3 includes a flock storage box 31, a cyclone generator 32, and a flock collection box 33. The yarn collection device uses a collecting roller 4, but is not limited to this. Following the conveying direction of the center yarn 8, the components are arranged in sequence: tension roller 1, gluing and applying device 2, flock storage box 31, cyclone generator 32, flock collection box 33, and collecting roller 4. All these components are fixed to a support frame.

[0023] The tension roller 1 consists of a sleeve (not shown) and a chuck (not shown). The sleeve is used to fix the center yarn 8 for easy feeding; the chuck is used to provide tension to the center yarn 8 to prevent airflow disturbance from affecting the adhesion and twisting process of the down.

[0024] The guide wheel 21, pressure roller 22, and drip roller 23 of the glue application and dripping device 2 are fixed to the glue storage tank 24, which in turn is fixed to the bracket. The guide wheel 21 has a V-shaped structure, guiding the center yarn 8 through a V-groove to maintain its correct conveying direction. The pressure roller 22 is located slightly below the center of the glue storage tank 24 and is immersed in the adhesive to ensure that the surface of the center yarn 8 is fully coated with adhesive. The drip roller 23 has a rectangular groove to remove excess glue, preventing excessive adhesive from causing excessive down adhesion or clogging of the device channels.

[0025] The down collection box 31 in the down-coating device 3 can adopt a rectangular shell structure, with openings at the center of the side walls on the inlet and outlet sides to allow the center yarn 8 to pass through. The bottom of the down collection box 31 has a filling port connected to the down-filling machine 5. The down-exit end of the down-filling machine 5 is located inside the down collection box 31, near the path of the center yarn 8, enabling it to quantitatively and continuously and stably feed down 9 into the down collection box 31. A cyclone generator 32 is installed on the outlet side opening of the down collection box 31. The cyclone generator is fixed at the opening by an interference fit to prevent gaps between the opening and the cyclone generator. The cyclone generator 32 is arranged at the center of the outlet side of the down collection box 31, which helps reduce the probability of the core yarn outside the center contacting the down. The front and upper back of the down collection box 31 have openings with filters installed on them to stably discharge air from the box while ensuring that down is not discharged.

[0026] The structure of the cyclone generator 32 is as follows Figure 2 As shown, the inlet 321 of the through hole is narrow and the outlet 322 is wide. From the inlet 321 to the outlet 322, there is a variable cross-section spiral structure that first narrows and then expands, which is used to generate cyclone airflow. The air inlet of the cyclone generator 32 is located on the side and is used to connect the air compressor 7. The air compressor 7 provides a stable airflow to the cyclone generator 32. Figure 2 The diameters of the openings at the four key locations shown are related as d > a = c > b. Under the stable airflow provided by the air compressor 7, the center yarn 8 enters through the inlet 321 of the cyclone generator 32. As it passes through the through-hole, a continuous rotating airflow is generated inside the cyclone generator 32. The narrow opening of the inlet 321 generates suction, drawing down 9 into the cyclone generator 32. Under the action of the rotating airflow, the down 9 adheres to the center yarn 8, achieving a twisting effect and forming the down-covered core yarn 10. The rotating airflow also helps the adhesive on the center yarn 8 to take effect quickly, thus adhering to more down and blowing away loosely adhered down. Simultaneously, the wide opening of the outlet 322 generates repulsive force, blowing away down that is not firmly adhered to the center yarn 8, causing it to fall into the down storage box 31. Therefore, the function of the cyclone generator can be summarized in two aspects: First, it provides circumferential rotating and twisting airflow to twist the down that has adhered to the center yarn 8, improve the adhesion between the down and the center yarn, ensure that the down on the covered core yarn 10 is evenly and regularly distributed, and thus improve the quality of the covered core yarn; Second, it provides axial airflow to deal with the problem of down accumulation when the center yarn passes through, blow out the accumulated down, and ensure the continuous production and stable quality of the covered core yarn.

[0027] Optionally, a temperature control module can be added to the airflow inlet of the cyclone generator 32. For specific types of adhesives, using rotating airflow at a specific temperature for thermal activation or curing significantly improves production efficiency compared to ambient temperature airflow.

[0028] The down collection box 33 also has openings on its inlet and outlet side walls. The inlet opening is used to insert the other end of the cyclone generator 32, which is also fixed to the down storage box 31 with an interference fit. The distance between the two side walls of the down storage box 31 and the down collection box 33 is determined by the axial dimension of the cyclone generator 32 and is smaller than the axial dimension of the cyclone generator 32. The bottom of the down collection box 33 has an opening for connecting the down inlet end of the down return machine 6, and the bottom of the down storage box 31 also has a down return port for connecting the down inlet end of the down return machine 6. The down return machine 6 connects the down storage box 31 and the down collection box 33, facilitating the recycling and full utilization of the down 9. The function of the down collection box 33 is to capture the down that is blown out of the down storage box 31 and is not adhered to, and to recycle it. The down collection box 33 stores the loosely adhered down removed by the cyclone generator 32 and connects to the down return machine 6 through the down return port, allowing the down to be fed back into the down storage box 31, thus achieving internal circulation of the down. This ensures a constant supply of down in the down storage box 31, thereby achieving uniform and regular production of the down-coated core yarn.

[0029] An embodiment of the present invention also provides a method for preparing a flocked core yarn, the operation steps of which are as follows: Step 1: The center yarn 8 is passed sequentially through the gluing and applying device 2 and the down-coating device 3, and finally wound onto the collecting roller 4. The center yarn 8 can be single-ply, double-ply, or multi-ply. After the collecting roller 4 is started, the center yarn 8 moves smoothly forward under the traction force, is precisely guided by the V-shaped guide wheel 21, and smoothly enters the glue storage tank 24. At this time, the pressure roller 22, located slightly below the center of the glue storage tank 24 and immersed in the adhesive, will press the center yarn 8 completely into the adhesive, ensuring that its surface is fully wetted. Subsequently, the center yarn 8 passes through the gluing roller 23 with rectangular grooves, which effectively removes excess adhesive, avoiding excessive glue application that could lead to excessive down coating or blockage of the device channels.

[0030] Step 2: Start the down filling machine 5. The down filling machine 5 continuously feeds down 9 into the down storage box 31 according to the set amount. There is a positive correlation between the down filling amount and the transmission speed. When the impregnated center yarn 8 enters the down storage box 31, the down 9 is evenly attached to its surface, thereby keeping the down covering density on the down covering core yarn 10 stable and completing the initial bonding.

[0031] Step 3: Activate the cyclone generator 32. Its internal spiral structure generates a strong rotating airflow, creating negative pressure at the cyclone outlet, which efficiently draws in the down 9 from the down storage box 31. Under the action of the rotating airflow, the down 9 is tightly bonded to the central yarn 8 and twisted. At the same time, the airflow can also blow away loosely adhered down, ensuring that the down 9 is evenly distributed and the down covering effect is neat. The conveying speed of the central yarn 8 is positively correlated with the air pressure of the cyclone generator 32.

[0032] Step 4: Start the down recovery machine 6 to collect any loose or excess down 9 from the down storage box 31 and re-transport it to the down storage box 31 for recycling, thus achieving efficient resource utilization. Finally, the formed down-coated core yarn 8 is neatly collected by the collecting roller 4. The entire process realizes continuous production of the down-coated core yarn 10, ensuring stable product quality.

[0033] The parameter relationships among the cyclone generator, down filling machine, and collecting roller: Cyclone generator 32 is connected to air compressor 7, and the airflow speed is controlled by air pressure valve. When the air pressure valve is increased, the airflow speed in cyclone generator 32 increases, thereby improving the core yarn down coating efficiency, and the down consumption rate in down storage box 31 also increases; down filling machine 5 can control the down filling amount, and the down filling amount increases accordingly when the down filling machine speed is increased; the speed control device of collecting roller 4 adjusts the overall yarn take-up speed, and the overall yarn take-up speed increases when the speed of collecting roller is increased.

[0034] These three elements constitute a dynamic coupling control system. When the target take-up speed increases, the opening of the air pressure valve of the cyclone generator 32 needs to be increased simultaneously, and the gear of the filling machine 5 needs to be increased to ensure that the amount of flocking matches the linear speed. In actual production, a closed-loop feedback mechanism is adopted, and dynamic adjustments are made based on indicators such as the flocking uniformity and twisting density of the finished flocked core yarn. If insufficient flocking is detected, the gear of the filling machine is increased; if the twisting effect is unsatisfactory, the air pressure of the cyclone generator is increased. Through this multi-parameter collaborative optimization strategy, flocked core yarn products that meet different specifications and performance requirements can be stably produced.

[0035] In one embodiment, the take-up speed can be set to 33 m / min; the cyclone generator pressure to 0.1 MPa; and the fill weight to 20 g / min. However, this is not the limitation, and those skilled in the art can adjust these parameters according to actual needs.

[0036] Another embodiment of the present invention provides an apparatus for preparing flocked core yarn, such as Figure 3As shown. The device includes a yarn placement device, a gluing and applying device 2, a flocking device 3, a yarn collection device, a flocking machine 5, and an air compressor 7. The yarn placement device uses a tension roller 1, but is not limited to this. The gluing and applying device 2 consists of a guide wheel 21, a pressure roller 22, a applying roller 23, and a glue storage box 24. The flocking device 3 includes a flock storage box 31 and a cyclone generator 32. The yarn collection device uses a collecting roller 4, but is not limited to this. Following the conveying direction of the center yarn 8, the components are arranged in sequence: tension roller 1, gluing and applying device 2, flock storage box 31, cyclone generator 32, and collecting roller 4. All these components are fixed on a support. This device differs from the device in the above embodiment in that it does not contain a flock collection box 33 and a flock return machine 6. Except for the flock collection and return functions, this device has the same functions as the device in the above embodiment, and can also achieve the preparation of flocked core yarn. This function is suitable for applications with high flock content; if a small amount of flock return is required, the flock return function can be omitted.

[0037] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Appropriate modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the protection scope of the present invention, which is defined by the claims.

Claims

1. An apparatus for preparing flocked core yarn, characterized in that, include: Yarn placement device, gluing and applying device, flocking device, flocking machine, and yarn storage device; The yarn placement device is used to place the center yarn; The adhesive application device is used to apply adhesive to the center yarn; The flocking device includes a flocking box and a cyclone generator. The flocking box has openings on the inlet side and the outlet side. The opening on the inlet side is used for the center yarn to enter the flocking box, and the opening on the outlet side is used to install the cyclone generator. The cyclone generator contains a through-hole for passing through the center yarn and generates a rotating airflow through the through-hole to draw in the down and bond it to the center yarn to form a down-covered core yarn. The down filling machine is connected to the down storage box and is used to provide down to the central yarn entering the down storage box; The yarn storage device is used to store the flocked core yarn.

2. The apparatus for preparing flocked core yarn as described in claim 1, characterized in that, The yarn placement device includes a tensioning roller, and the yarn collection device includes a collecting roller.

3. The apparatus for preparing flocked core yarn as described in claim 1, characterized in that, The glue application and grouting device includes a guide wheel, a pressure roller, a grouting roller, and a glue storage tank; the guide wheel has a V-shaped structure, the pressure roller is located slightly below the center of the glue storage tank, and the grouting roller has a rectangular groove.

4. The apparatus for preparing flocked core yarn as described in claim 1, characterized in that, The lint storage box has openings at the center of the upper end of both the front and back sides, and filter screens are installed on the openings.

5. The apparatus for preparing a flocked core yarn as described in claim 1, characterized in that, The through-hole structure of the cyclone generator is a variable cross-section spiral structure that first narrows and then expands from the inlet to the outlet of the through-hole. The inlet of the through-hole is narrow and the outlet is wide. An air inlet is provided on the side wall of the through-hole of the cyclone generator, which is used to connect to an air compressor.

6. The apparatus for preparing a flocked core yarn as described in claim 1, characterized in that, It also includes a collecting box, which is located on the outlet side of the collecting box. The collecting box has openings on the inlet and outlet side walls, and the cyclone generator is connected to the opening on the inlet side of the collecting box.

7. The apparatus for preparing a flocked core yarn as described in claim 6, characterized in that, It also includes a down return machine, wherein the down return end of the down return machine is connected to the down collection box and the down exit end is connected to the down storage box, for sending the down in the down collection box into the down storage box.

8. A method for preparing a flocked core yarn, implemented based on the apparatus for preparing a flocked core yarn according to any one of claims 1-7, characterized in that, Includes the following steps: The center yarn is wound onto the yarn placement device, and the adhesive is applied to the surface of the center yarn through the glue application and dripping device, and excess adhesive is dripped off. The down is fed into the down storage box by the down filling machine, and the down is attached to the surface of the central yarn passing through the down storage box; The rotating airflow generated by the cyclone generator binds and twists the down to the center yarn to form a down-covered core yarn, while blowing away excess or loose down. The yarn storage device stores the pile-covered core yarn.

9. A method for preparing a flocked core yarn as described in claim 8, characterized in that, Down blown out by the cyclone generator is collected in a down collection box, and the down in the down collection box is recycled to the down storage box by a down recycling machine.

10. A method for preparing a flocked core yarn as described in claim 8, characterized in that, The adhesive is selected from one of PVA water-soluble adhesive, PLA adhesive, and PCL adhesive.

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