Down puffing device for down jacket processing and puffing method thereof

Abstract

The application discloses a down fluffing device for down jacket processing and a fluffing method thereof, relates to the down processing technical field, and particularly relates to a down fluffing device for down jacket processing, which comprises a shell, an inner barrel fixedly arranged in the shell, a plurality of partition plates fixedly connected to the inner periphery of the inner barrel along the axial direction of the inner barrel, and elastic cylinders fixedly connected between every two adjacent partition plates in the up-down direction. The shell, the inner barrel, the partition plates and the elastic cylinders form an annular space, and the setting of the sealing discharging plate can provide an independent closed processing chamber for the down, effectively prevent the down from leaking outward during the fluffing process, avoid the mixing of external impurities, ensure the cleanliness of the down and the controllability of the processing environment, and drive the top pushing part to rotate through the fluffing driving column.

Description

Technical Field

[0001] This invention relates to the field of down processing technology, and more specifically, to a down fluffing device and a down fluffing method for down garment processing. Background Technology

[0002] Down jackets, as common thermal clothing, rely heavily on the loft of the down for their warmth. The higher the loft, the more effective the insulation. However, after harvesting, down typically undergoes a series of pre-processing steps, such as washing, disinfection, and sorting. During this process, down fibers are easily squeezed and rubbed, causing the down clusters to collapse, the fibers to become entangled, and the loft to drop significantly, directly affecting the warmth of the finished product. Therefore, fully restoring the loft of the down before the filling process is an indispensable and crucial step in down jacket manufacturing. Currently, down fluffing treatment devices mainly employ two methods: mechanical agitation and airflow impact. Mechanical agitation devices directly tumble and disperse the down using rotating blades or agitators. While this effectively detangles clumps of down, the continuous friction and shearing between the rigid agitator and the down fibers easily cause fiber breakage and damage to the down core, leading to a decrease in down yield and irreversible degradation of insulation performance due to structural damage. Airflow impact devices, on the other hand, utilize high-speed airflow to tumble and collide the down within a container, achieving fiber separation and fluffiness restoration through pneumatic action. This method is relatively gentler. While it causes less damage to the fibers, in actual use, the simple continuous airflow impact can easily form a fixed swirling pattern in the container. The down is unevenly distributed in the flow field as it stratifies with the airflow. Some denser down clusters are stuck at the bottom of the container or in the dead zone due to gravity settling, making it difficult to be carried by the main airflow and forming local agglomerates. The fibers inside these agglomerates are bound together by surface friction, electrostatic adsorption, and the liquid bridge force formed by residual moisture. Once formed, they will continue to adsorb the surrounding loose feathers and grow continuously, resulting in uneven lofting effect and making it difficult for the overall loft to reach the expected level. For example, patent application number 202510289613.X discloses a down fluffing device and method for down jacket processing. This design employs a horizontal rotating drum structure. Through the matching design of the outer and inner drums and the setting of the connecting pipe, the transmission and sealing of the down during the fluffing process are achieved. During operation, the drum rotates around a horizontal axis. The down is lifted to a certain height within the drum by the drum wall and then falls downwards under its own gravity, thus achieving the tumbling and mixing of the down. This gravity-driven tumbling method is gentler than mechanical stirring and can... While this method avoids shear damage to down fibers from rigid components to some extent, the down in this solution relies solely on its own gravity to fall and reposition itself, lacking external force to actively break up the fiber tangles. For down clusters that are tightly tangled due to compression or have high moisture content, the down clusters are very likely to re-aggregate into clumps during repeated scattering and falling. Furthermore, the fibers inside the clumps of down are bound together by adsorption and liquid bridging forces, and the impact of falling alone is far from sufficient to fully break them down. This results in a large number of blind spots in the fluffing process, making it difficult to achieve a uniform and sufficient fluffing effect, which brings inconvenience to actual production. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a down fluffing device and a down fluffing method for down jacket processing, which solves the problems mentioned in the background art.

[0004] The technical solution of this invention is as follows: To achieve the above objectives, the present invention provides the following technical solution: a down fluffing device for down jacket processing, comprising a shell, an inner barrel fixedly installed inside the shell, and multiple partition plates fixedly connected to the inner circumferential surface of the inner barrel along its axial direction, with an elastic cylinder fixedly connected between each two adjacent partition plates, a rotatable fluffing drive column coaxially arranged inside the inner barrel, multiple pushing components arranged on the circumferential surface of the fluffing drive column that can cause the elastic cylinder to suddenly bulge outward in parts, and multiple flexible columns evenly arranged on the outer circumferential surface of the elastic cylinder that can rebound when gas is suddenly introduced.

[0005] Preferably, the two adjacent partition plates, the inner barrel, and the elastic cylinder can be enclosed to form an annular space for fluffing down. The outer circumference of the outer shell is provided with a plurality of sealing discharge plates with one end passing through the outer shell and the inner barrel in sequence. The lower surface of the inner barrel is fixedly connected to the inner bottom surface of the outer shell, and a plurality of auxiliary stabilizing blocks with one end set on the inner circumference of the outer shell are uniformly fixedly connected to the outer circumference of the inner barrel. The upper surface of the outer shell is fixedly installed with a drive motor for driving the fluffing drive column to rotate, wherein the drive shaft of the drive motor extends into the outer shell and is fixedly connected to the fluffing drive column.

[0006] Preferably, the outer peripheral surface of the outer shell is fixedly connected with a plurality of second air inlet pipes, one end of which extends into the outer shell. The plurality of second air inlet pipes correspond one-to-one with a plurality of annular spaces, and the end of the second air inlet pipe extending into the outer shell is fixedly connected to the inner barrel. The peripheral surface of the inner barrel is provided with a plurality of inclined nozzles that enable the second air inlet pipes to communicate with the annular spaces. The upper surface of the outer shell is fixedly connected with a first air outlet pipe that communicates with it.

[0007] Preferably, the elastic cylinder includes an elastic ring cylinder with both its upper and lower ends fixedly connected to corresponding partition plates. Multiple sealing soft plates are fixedly connected to the circumferential surface of the elastic ring cylinder, and both the elastic ring cylinder and the sealing soft plates are made of breathable fabric. The multiple soft columns are respectively fixedly connected to their corresponding sealing soft plates.

[0008] Preferably, the outer circumferential surface of the fluffy drive column is provided with an installation ring groove, the pushing component includes a plurality of limiting barrels uniformly and fixedly connected to the inner circumferential surface of the installation ring groove, and auxiliary pull cylinders slidably connected to the limiting barrels. The inner wall of the limiting barrel is slidably connected to an impact plate that can move suddenly toward the elastic cylinder, and a synchronous connecting plate is fixedly connected between two adjacent auxiliary pull cylinders.

[0009] Preferably, a second spring is fixedly connected to one end of the impact plate that is slidably connected inside the limiting barrel, and a mounting slider is fixedly connected to the end of the second spring away from the impact plate. The mounting slider is slidably connected inside the limiting barrel. The inner circumferential surface of the auxiliary pull tube is provided with multiple mounting grooves, and a limiting block that can be locked into the impact plate is slidably connected in the mounting groove. A third spring is fixedly connected to the end of the limiting block away from the impact plate, and a first spring is fixedly connected to the end of the auxiliary pull tube near the axis of the fluffing drive column. The end of the first spring away from the auxiliary pull tube is fixedly connected to the inner circumferential surface of the mounting ring groove.

[0010] Preferably, a gathering cylinder is fixedly connected to the top of the inner circumferential surface of the outer shell, and the bottom end of the gathering cylinder is fixedly connected to the inner barrel. A mounting circular plate is fixedly connected to the inner wall of the gathering cylinder, and a plurality of inclined push plates are fixedly connected to the lower surface of the mounting circular plate. A limiting push plate that can abut against the inclined push plate is fixedly connected to one end of the first auxiliary pull cylinder from top to bottom.

[0011] Preferably, the sealing plate is inlaid with sealing blocks that correspond one-to-one with the positions of multiple soft pillars and can form a complete circular plate shape, and the converging ends of the multiple sealing blocks away from the soft pillars are all fixedly connected with top blocks.

[0012] Preferably, the flexible column has an air jet channel with openings at both ends, and the opening of the air jet channel gradually narrows at the end away from the sealing flexible plate.

[0013] The present invention also provides a method for fluffing down using a down fluffing device in down garment processing, comprising the following steps: The pre-treated down feathers are then fed into the annular space; Clean gas is introduced into the annular space through the second air intake pipe; Gas is discharged to the outside of the outer casing through the first vent pipe; The drive motor is started to drive the fluffing drive column to rotate at a set speed and maintain the rotation for a set time, so that the down reaches the set fluffing state; The down feathers are then removed after they have become fluffy, making it easier for them to be processed later.

[0014] Beneficial effects This invention provides a down fluffing device and a down fluffing method for down jacket processing, which has the following beneficial effects: 1. This down fluffing device and method for down jacket processing, through the enclosed annular space formed by the outer shell, inner barrel, partition plate, and elastic cylinder, and the setting of the sealed discharge plate, can provide an independent and sealed processing chamber for down. During the fluffing process, it can effectively prevent down from leaking outward and avoid the mixing of external impurities, ensuring the cleanliness of down and the controllability of the processing environment. The fluffing drive column drives the push component to rotate, causing the elastic cylinder to bulge outward in a localized manner. This can apply a pulsed mechanical beating force to the down in the annular space, directly hitting the down clusters, effectively breaking the entanglement and cohesion between fibers, and promoting the rapid dispersion of clumps of down. At the same time, the soft columns evenly arranged on the outer circumference of the elastic cylinder can quickly rebound after the sudden introduction of gas, performing multi-directional beating and agitation on the down, further breaking down the fiber entanglement inside the down clusters. The mechanical force is applied directly to the down body, shortening the force transmission path and avoiding energy attenuation caused by indirect transmission, significantly improving the efficiency and uniformity of fluffing.

[0015] 2. The down fluffing device and its fluffing method for down jacket processing utilize the localized protrusion of the elastic cylinder to induce a sudden change in the local volume of the annular space. This generates a transient high-speed pulsed airflow within the down, which impacts the down agglomerates with high dynamic pressure. This disrupts the weak adsorption balance between fibers caused by surface friction, electrostatic adsorption, and liquid bridging forces, forcibly dispersing the down agglomerates trapped in the dead flow zone and allowing them to redistribute evenly in the mainstream field. This effectively prevents secondary agglomeration of down during processing. Simultaneously, the dynamic pressure effect of the pulsed airflow enhances the turbulence of the local airflow, increases the convective heat transfer coefficient between the hot airflow and the down fibers, and accelerates the evaporation rate of residual moisture in the fiber gaps. Combined with the direct beating action generated by the rebound of the soft column, the down fibers are fully untangled and restored to a full and fluffy state under the triple synergistic effect of mechanical beating, pneumatic impact, and hot air drying. Ultimately, this achieves uniform and efficient recovery of loft, providing high-quality and stable down raw materials for subsequent filling processes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the fluffing device of the present invention; Figure 2 This is a schematic cross-sectional view of the outer casing of the present invention from the left. Figure 3 This is a top-view cross-sectional structural diagram of the outer casing of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A; Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 6 This is a top-view cross-sectional structural diagram of the auxiliary pull tube and the limiting barrel of the present invention; Figure 7 This is a bottom view structural diagram of the mounting circular plate of the present invention; Figure 8 This is a schematic diagram of the mating structure between two adjacent auxiliary pull tubes of the present invention; Figure 9 This is a schematic diagram of the structure of the fluffy drive column of the present invention; Figure 10 This is a schematic diagram of the mating structure of the sealing flexible plate and the elastic ring cylinder of the present invention; Figure 11 This is a schematic diagram of the structure of the first spring of the present invention.

[0017] In the diagram: 1. Outer shell; 2. Fluffing drive column; 3. Inner barrel; 4. Sealing flexible plate; 5. Elastic ring cylinder; 6. Mounting ring groove; 7. Auxiliary pull cylinder; 8. Limiting barrel; 9. First spring; 10. Flexible column; 11. Auxiliary stabilizing block; 12. Divider plate; 13. Sealing block; 14. Top block; 15. Air jet channel; 16. Inclined nozzle; 17. Impact plate; 18. Second spring; 19. Mounting slider; 20. Limiting block; 21. Third spring; 22. Sealing discharge plate; 23. First air outlet pipe; 24. Mounting circular plate; 25. Inclined push plate; 26. Limiting push plate; 27. Synchronous connecting plate; 28. Second air inlet pipe. Detailed Implementation

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

[0019] Example 1 In existing technologies, down feathers rely solely on their own gravity to fall and change positions, lacking external force to actively break up fiber entanglements. For down clumps that are tightly entangled due to compression or have high moisture content, the down clusters are very prone to re-aggregating into clumps during repeated scattering and falling. Furthermore, the fibers inside the clumps of down are bound together by adsorption and liquid bridging forces, and the impact of falling alone is far from sufficient to fully break them down. This results in a large number of blind spots in the fluffing process, making it difficult to achieve a uniform and sufficient fluffing effect, which brings inconvenience to actual production. To solve the above problems, this embodiment is invented.

[0020] Please see Figures 1 to 11 The present invention provides a technical solution: a down fluffing device for down jacket processing, including a shell 1, an inner barrel 3 fixedly installed inside the shell 1, and a plurality of partition plates 12 fixedly connected to the inner circumferential surface of the inner barrel 3 along its axial direction, and an elastic cylinder fixedly connected between two adjacent partition plates 12, a rotatable fluffing drive column 2 is arranged coaxially inside the inner barrel 3, a plurality of pushing parts that can cause the elastic cylinder to suddenly bulge outward in a local area are arranged on the circumferential surface of the fluffing drive column 2, and a plurality of soft columns 10 that can rebound when gas is suddenly introduced are evenly arranged on the outer circumferential surface of the elastic cylinder; The two adjacent partition plates 12, the inner barrel 3, and the elastic cylinder can be combined to form an annular space for fluffing down. Multiple sealing discharge plates 22, each with one end penetrating through the outer shell 1 and the inner barrel 3, are provided on the outer periphery of the outer shell 1. These sealing discharge plates 22 correspond one-to-one with the positions of multiple annular spaces. Opening the sealing discharge plates 22 allows down to be filled into the annular space. After filling, re-fixing the sealing discharge plates 22 to the outer shell 1 restores the annular space to a sealed state. The lower surface of the inner barrel 3 is fixedly connected to the inner bottom surface of the outer shell 1, and the outer surface of the inner barrel 3... Multiple auxiliary stabilizing blocks 11 are evenly fixedly connected to the circumference of the outer shell 1, with one end of each block set on the inner circumference of the outer shell 1. The stability of the inner barrel 3 within the outer shell 1 is greatly increased by the auxiliary stabilizing blocks 11. A drive motor for driving the fluffing drive column 2 to rotate is fixedly installed on the upper surface of the outer shell 1. The drive shaft of the drive motor extends into the outer shell 1 and is fixedly connected to the fluffing drive column 2. At the same time, the bottom end of the fluffing drive column 2 is rotatably connected to the bottom surface of the inner barrel 3. Therefore, when the drive motor works, it drives the fluffing drive column 2 to rotate, thereby driving multiple pushing components to rotate synchronously. Multiple second air inlet pipes 28, one end of which extends into the outer periphery of the outer shell 1, are fixedly connected along its axial direction. The multiple second air inlet pipes 28 correspond one-to-one with multiple annular spaces. The end of the second air inlet pipe 28 extending into the outer shell 1 is fixedly connected to the inner barrel 3. Multiple inclined nozzles 16 are provided on the periphery of the inner barrel 3 to facilitate communication between the second air inlet pipes 28 and the annular spaces. A first air outlet pipe 23 is fixedly connected to the upper surface of the outer shell 1 and communicates with it. A one-way valve is provided in the first air outlet pipe 23 so that the gas can be discharged from the first air outlet pipe 23 only when the internal air pressure of the outer shell 1 reaches a preset opening threshold. The ends of the multiple second air inlets 28 that are away from the outer shell 1 are all connected to the gas heating component through pipes. When the gas heating component is working, the heated gas is introduced into each annular space through the second air inlet 28. Since the inclined nozzle 16 is inclined, the hot air flow can form a rotating or spiral flow field in the annular space after it is ejected. Using the principle of vortex enhancement, the down is driven to tumble and move circumferentially with the air flow, which increases the convective heat transfer and mass transfer area between the down and the hot air flow. This is beneficial for quickly dissipating the moisture between the down fibers and restoring the fluffiness. At the same time, the gas heating component is an existing mature technology, and its specific structure and working principle will not be described in detail. The elastic cylinder includes an elastic ring cylinder 5 with both its upper and lower ends fixedly connected to the corresponding partition plates 12. Multiple sealing soft plates 4 are fixedly connected to the circumference of the elastic ring cylinder 5. Both the elastic ring cylinder 5 and the sealing soft plates 4 are made of breathable fabric. Multiple soft columns 10 are fixedly connected to the corresponding sealing soft plates 4. Although both the elastic ring cylinder 5 and the sealing soft plates 4 are made of breathable fabric, there is a clear difference in their performance. The sealing soft plates 4 are not elastic, while the elastic ring cylinder 5 is made of highly elastic fabric. The outer circumferential surface of the fluffy drive column 2 is provided with an installation ring groove 6. The pushing component includes multiple limiting barrels 8 that are uniformly fixedly connected to the inner circumferential surface of the installation ring groove 6, and auxiliary pull cylinders 7 that are slidably connected to the limiting barrels 8. An impact plate 17 that can move suddenly toward the elastic cylinder is slidably connected to the inner wall of the limiting barrel 8. A synchronous connecting plate 27 is fixedly connected between two adjacent auxiliary pull cylinders 7. Therefore, by setting the synchronous connecting plate 27, the axially adjacent auxiliary pull cylinders 7 can be made to move synchronously. At the same time, the end of the impact plate 17 away from the limiting barrel 8 is also slidably connected to the auxiliary pull cylinder 7. One end of the impact plate 17, which is slidably connected to the limiting barrel 8, is fixedly connected to a second spring 18. The end of the second spring 18 away from the impact plate 17 is fixedly connected to a mounting slider 19, which is slidably connected to the limiting barrel 8. The inner circumferential surface of the auxiliary pull tube 7 is provided with multiple mounting grooves, and a limiting block 20 (which can be locked into the impact plate 17) is slidably connected in the mounting groove. The end of the limiting block 20 away from the impact plate 17 is fixedly connected to a third spring 21, which is set in the mounting groove. The end of the auxiliary pull tube 7 near the shaft of the fluffing drive column 2 is fixedly connected to a first spring 9, and the end of the first spring 9 away from the auxiliary pull tube 7 is fixedly connected to the inner circumferential surface of the mounting ring groove 6. The first spring 9 is sleeved on the limiting barrel 8, but the first spring 9 and the limiting barrel 8 do not contact each other. When the auxiliary pull tube 7 is subjected to an external force in the direction of the axial center of the fluffing drive column 2, it engages with the upper limit slot on the outer periphery of the impact plate 17 through multiple limit blocks 20, thereby driving the impact plate 17 to move synchronously in the direction of the axial center of the fluffing drive column 2. During this process, the impact plate 17 pushes the second spring 18 to undergo compression deformation, and the second spring 18 continuously stores elastic potential energy. At the same time, the auxiliary pull cylinder 7 synchronously compresses the first spring 9 sleeved on the outer periphery of the limiting barrel 8, and the elastic potential energy stored inside it continuously accumulates as the displacement of the auxiliary pull cylinder 7 increases. When the elastic force accumulated by the second spring 18 due to continuous compression exceeds the maximum static friction and locking resistance between the limiting block 20 and the impact plate 17 slot, the mechanical release condition is met. The impact plate 17 instantly breaks through the limiting constraint of the limiting block 20, and suddenly ejects away from the axis of the fluffing drive column 2, carrying all the elastic potential energy released by the second spring 18. It impacts the elastic cylinder, causing it to bulge outward locally. This action produces a triple synergistic effect on the down in the annular space: First, the local bulge of the elastic cylinder is like a stick hitting the down jacket, directly striking the down clusters with pulsed mechanical force, damaging the fibers. The entanglement and cohesion between the down feathers cause the clumps to disperse instantly. Secondly, the moment the elastic tube bulges outward, the local volume of the annular space changes abruptly, similar to a piston effect, which rapidly displaces the gas near the elastic tube, forming a transient high-speed pulse airflow. This airflow spreads tangentially and radially along the annular space, exerting a strong force impact on the surrounding down feathers, causing the originally partially stationary down clumps to be suddenly blown apart. Thirdly, the high elastic recovery motion of the elastic tube after the impact causes repeated changes in the local volume of the annular space, triggering a brief oscillation of the airflow, further enhancing the repeated kneading and turning effect of the airflow on the down feathers. The core value of this transient pulse airflow lies in preventing down agglomeration. Although down in the annular space can achieve overall flow under the continuous introduction of heated gas, the interfiber liquid bridge force caused by surface friction, electrostatic adsorption and humidity between down fibers can easily form local agglomerates. Once these agglomerates are stuck in the low-speed zone or dead zone of the annular space, they will continue to adsorb the surrounding loose feathers and grow continuously. The pulse airflow generated by the periodic impact of the impact plate 17 impacts these potential or already formed down agglomeration areas in the form of instantaneous high dynamic pressure, breaking the weak adsorption force balance between fibers, forcibly dispersing the agglomerates, and causing the down to redistribute in the mainstream field of the annular space, and continue to roll and move with the hot airflow to achieve uniform distribution in the space. In addition, the dynamic pressure effect of the pulsed airflow can enhance the turbulence of the local airflow, increase the convective heat transfer coefficient between the hot airflow and the down fibers, allow heat to penetrate into the down cluster more quickly, accelerate the evaporation rate of residual moisture in the fiber gaps, and ultimately achieve a significant recovery of the down's loft. Meanwhile, since the mounting slider 19 and the limiting barrel 8 are slidably connected, at the moment the impact plate 17 pops out at high speed, the mounting slider 19 is temporarily fixed in position due to the constraint of the limiting structure. The elastic potential energy released by the second spring 18 is completely converted into the outward kinetic energy of the impact plate 17. At the same time, based on the principle of inertia, the impact plate 17 will pull the mounting slider 19 to slide synchronously away from the axis through the second spring 18. Therefore, the connection between the mounting slider 19 and the second spring 18 will not hinder the pop-out motion trend of the impact plate 17. Furthermore, when the sealing soft plate 4 rebounds and resets, it will push the impact plate 17 inward to retract, thereby driving the second spring 18 and the mounting slider 19 to reset synchronously to the initial state. At the moment the impact plate 17 disengages, the limiting block 20, under the squeezing action of the edge of the impact plate 17 slot, overcomes the elastic force of the third spring 21 and retracts completely into the mounting slot, providing the auxiliary pull cylinder 7 with freedom of movement for subsequent independent reset. When the external force acting on the auxiliary pull cylinder 7 is released, the compressed first spring 9 releases its stored elastic potential energy, pushing the auxiliary pull cylinder 7 to reset in a direction away from the axis of the fluffy drive column 2, returning to the initial working position and preparing for the next working cycle. A gathering cylinder is fixedly connected to the top of the inner circumferential surface of the outer shell 1, and the bottom end of the gathering cylinder is fixedly connected to the inner barrel 3. A mounting circular plate 24 is fixedly connected to the inner wall of the gathering cylinder. Multiple inclined push plates 25 are fixedly connected to the lower surface of the mounting circular plate 24. A limiting push plate 26 that can abut against the inclined push plate 25 is fixedly connected to one end of the first auxiliary pull cylinder 7 from top to bottom. Therefore, when the auxiliary pull tube 7 rotates synchronously with the fluffing drive column 2, the limiting push plate 26 moves circumferentially together with the auxiliary pull tube 7. When the limiting push plate 26 rotates to contact the inclined push plate 25, the inclined surface of the inclined push plate 25 generates a normal constraint reaction force on the limiting push plate 26. The radial component of this reaction force along the fluffing drive column 2 forces the limiting push plate 26 to slide along the inclined surface of the inclined push plate 25 while continuing to rotate circumferentially, thereby driving the auxiliary pull tube 7 to overcome the elastic force of the first spring 9 and move towards the axis of the fluffing drive column 2. As the fluffing drive column 2 continues to rotate, the moment the limiting push plate 26 slides past the end of the inclined push plate 25 and separates from it, the inclined plane constraint reaction force disappears, and the only external force source for the radial movement of the auxiliary pull cylinder 7 is released. At this time, the compressed first spring 9 releases its stored elastic potential energy, pushing the auxiliary pull cylinder 7 together with the limiting push plate 26 to quickly reset in a direction away from the axis of the fluffing drive column 2, and return to the initial radial working position. At the same time, multiple inclined push plates 25 are evenly arranged circumferentially, so that the pushing components in each annular space generate multiple equally spaced energy storage and release actions during the full rotation, forming a pulse frequency that is precisely matched with the rotation speed of the fluffing drive column 2, ensuring that the down undergoes uniform and high-frequency mechanical beating and pneumatic impact in the annular space, thereby achieving batch consistency and spatial uniformity of fluffing effect.

[0021] Example 2 Although the impact plate 17 can suddenly strike the elastic cylinder, generating pulsed mechanical beating and pneumatic impact on the down in the annular space, its mode of action has inherent limitations: the impact plate 17 is always located inside the elastic cylinder, that is, outside the annular space. All forces must be indirectly transmitted to the down through the convex deformation of the elastic cylinder wall. The flexible buffering characteristics of the elastic ring cylinder 5 and the sealing soft plate 4 will cause the instantaneous peak value of the impact force to be partially absorbed and dispersed, resulting in a decrease in the mechanical energy density transmitted to the down. The intensity of the action gradually decreases along the radial transmission path. In particular, the down clumps in the middle of the annular space are subject to limited actual loosening force, and the fiber entanglement of the agglomerated down is difficult to be fully broken up. At the same time, the elastic cylinder wall, as an intermediate medium, has a certain lag in its deformation and recovery process, resulting in a time difference and energy loss between the high-speed pulse action of the impact plate 17 and the actual force on the down. It is impossible to apply instantaneous and concentrated direct impact to the down, and the efficiency of the fluffing effect is restricted. This embodiment is invented to solve the above problems.

[0022] Please see Figures 1 to 11 Based on the above embodiments, the technical solution adopted includes a sealing block 13 embedded on the sealing soft plate 4, which corresponds one-to-one with the positions of multiple soft pillars 10 and can form a complete circular plate shape, and a top block 14 is fixedly connected to the converging end of the multiple sealing blocks 13 on the side away from the soft pillars 10, wherein the material of the sealing block 13 is rubber. The flexible column 10 has an air jet channel 15 with openings at both ends. The opening of the air jet channel 15 away from the sealing flexible plate 4 gradually narrows. A conical rubber barrel is fixedly connected to the inner wall of the narrowing end of the air jet channel 15. The tip of the conical rubber barrel is arranged facing away from the elastic cylinder. The tip can expand outward and split into multiple petals under air pressure. By setting the conical rubber barrel, the narrowing end of the air jet channel 15 can achieve unidirectional flow, allowing gas to flow out only from the inside to the outside and preventing gas from flowing in the opposite direction. Therefore, as the heating gas is continuously discharged into the annular space from the inclined nozzle 16, since both the sealing soft plate 4 and the elastic ring cylinder 5 are made of breathable fabric, based on the principle of gas permeation pressure difference, once the pressure in the annular space accumulates to a sufficient level, the hot airflow will penetrate the microporous structure of the fabric and seep into the inner barrel 3. As the gas continues to flow in, the gas pressure in the inner barrel 3 continues to rise until it exceeds the opening threshold of the one-way valve in the first vent pipe 23, at which point the excess gas is discharged outward, thus establishing a stable positive pressure gradient between the inner barrel 3 and the annular space. At the same time, the auxiliary pull cylinder 7 rotates continuously under the drive of the fluffy drive column 2, intermittently pushing the elastic cylinder to move, causing a movable local protrusion on the outer circumference of the elastic cylinder. When the auxiliary pull cylinder 7 touches the top block 14, the top block 14 forcibly drives the free end of the sealing block 13 to flip outward, and a significant gap appears instantaneously between the originally tightly joined multiple sealing blocks 13. Driven by the pressure gradient, the pressurized gas accumulated in the inner barrel 3 is released. Under the pressure difference, hot gas rushes into the jet duct 15 through these gaps. Because the end of the jet duct 15 away from the sealing plate 4 has a tapered structure that gradually narrows, the airflow velocity increases sharply and the dynamic pressure rises rapidly according to the principle of fluid continuity. This creates a transient high-pressure pulse in the jet duct 15. This pulsed air pressure acts directly on the soft column 10, just like a pneumatic flexible actuator being stimulated to expand. It instantly overcomes the bending stiffness of the soft column 10, causing it to straighten and rebound quickly. The rebound action of the soft column 10 is similar to the shaking effect of an elastic whip tip, which whips and strongly agitates the down in the annular space. It integrates mechanical beating, pneumatic impact and fiber disturbance into one, which can more deeply break down the entanglement and aggregation of down, significantly accelerate the dissipation of moisture and the recovery of loft. This direct action mode from the inside out effectively shortens the force transmission path, avoids the energy dissipation and peak force attenuation caused by the elastic cylinder wall buffer, and greatly improves the efficiency and uniformity of the lofting process. Furthermore, once the auxiliary pull bucket 7 rotates past the position of the top block 14 and separates from it, the pushing force acting on the top block 14 immediately disappears. The sealing block 13 quickly resets itself due to the elastic recovery force of the rubber material, and tightly seals the air inlet of the jet channel 15 near the sealing soft plate 4. At the same time, after the soft column 10 completes the whipping action, the elastic strain energy stored inside its material is released. With the recovery force of its own bending stiffness, it quickly squeezes some of the gas inside the jet channel 15 outward from the tightening port. The soft column 10 then returns to its initial bending shape, preparing for the next round of rebound whipping action driven by high-pressure pulse gas. Furthermore, the restoring force of the soft column 10 comes from the elastic strain energy stored in its own material, rather than relying on the pressure difference between the inside and outside. During the process of being straightened by the transient high-pressure pulse airflow, the bending stiffness of the soft column 10 is forcibly overcome, and considerable elastic potential energy is accumulated inside the material. When the sealing block 13 closes the air inlet of the jet channel 15, the jet channel 15 forms a semi-closed cavity with only the far end open. At this time, the soft column 10 actively squeezes the residual gas in the cavity by its own elastic restoring force, just like a miniature piston driven by mechanical elasticity. Its squeezing force depends only on the rebound force of the material itself and is unrelated to the steady-state air pressure of the annular space. As long as the local pressure generated by the elastic restoring force of the soft column 10 at the far end opening of the jet channel 15 is greater than the background air pressure of the annular space at that location, the gas can be smoothly discharged outward. The tapered conical structure at the distal opening of the jet duct 15, together with the conical rubber barrel, constitutes a one-way conduction mechanism, providing a decisive guarantee for the recovery of the soft column 10. The tip of the conical rubber barrel only allows gas to expand under the pressure from the inside out, and automatically closes when there is no positive pressure difference. When the soft column 10 rebounds and squeezes the gas in the cavity, the pressure in the cavity increases, the tip of the conical rubber barrel expands, and the gas is smoothly discharged. When the soft column 10 returns to its initial bending shape and the pressure in the cavity is balanced with the outside, the tip of the conical rubber barrel closes, preventing the high-pressure gas in the annular space from flowing back into the jet duct 15. This one-way conduction mechanism structurally eliminates the reverse obstruction of the annular space air pressure on the recovery process of the soft column 10, ensuring that the soft column 10 can independently and undisturbedly complete its reset after each whipping action. The recovery of the soft column 10 and the steady-state pressure of the annular space are two processes on different time scales. The establishment and maintenance of air pressure in the annular space is a slow process accompanied by continuous ventilation, while the thumping and rebound of the soft column 10 occurs within a transient time window. During the short period of the soft column 10 rebounding and exhausting, the air pressure in the annular space is not enough to form an effective gas backflow into the jet channel 15 through the distal tightening port, let alone establish a reverse pressure sufficient to counteract the elastic recovery force of the soft column 10. Therefore, in the time dimension of the completion of the recovery action of the soft column 10, the air pressure in the annular space does not actually constitute an effective obstructive factor.

[0023] This invention is achieved through the following technical solution: a fluffing method based on a down fluffing device for down garment processing, comprising the following steps: The pre-treated down is quantitatively fed into the annular space formed by the partition plate 12, the inner barrel 3 and the elastic cylinder. After filling, the sealing discharge plate 22 is closed to restore the space to a sealed state. Clean and heated gas is continuously introduced into the annular space through the second air inlet pipe 28. The hot airflow is injected tangentially through the inclined nozzle 16, forming a rotating flow field in the annular space, driving the down to tumble circumferentially with the airflow, and at the same time accelerating the dissipation of residual moisture between fibers by means of convection effect. The gas is discharged in an orderly manner to the outside of the outer casing 1 through the first vent pipe 23 in order to maintain a suitable pressure balance inside the system; Start the drive motor to drive the fluffing drive column 2 to rotate stably at the set speed. During the rotation, the push component repeatedly impacts the elastic cylinder, generating periodic mechanical beating and transient pulse airflow, which strongly shakes and evenly impacts the down. The process continues until the preset time, so that the down fibers are fully untangled and restored to a full and fluffy state. Open the corresponding sealed discharge plate 22 to discharge the down that has reached the required fluffiness, for use in subsequent filling and other processing steps.

[0024] In summary, when using the down fluffing device and its fluffing method for down jacket processing, the down that needs to be pre-treated is first quantitatively loaded into the annular space formed by the partition plate 12, the inner barrel 3 and the elastic cylinder, and the sealing discharge plate 22 is closed to restore its airtightness. Then, the clean gas heated by the gas heating component is continuously tangentially introduced into the annular space through the second air inlet pipe 28 and the inclined nozzle 16 to form a rotating flow field to drive the down to circumferentially tumble, while the convection effect disperses the moisture between the fibers. The humidified gas seeps into the inner barrel 3 through the ventilated micropores of the elastic ring cylinder 5 and the sealing soft plate 4. After the gas pressure inside the inner barrel 3 accumulates to the one-way valve opening threshold, it is discharged in an orderly manner through the first vent pipe 23, thereby establishing a stable positive pressure gradient between the inner and outer chambers. The drive motor is started, which drives the fluffing drive column 2 to rotate at the set speed. The limit push plate 26 cyclically contacts and disengages from the inclined push plate 25 on the lower surface of the mounting circular plate 24 during the revolution of the auxiliary pull cylinder 7, driving the auxiliary pull cylinder 7 to reciprocate radially. This causes the impact plate 17 to disengage instantly after accumulating energy and pop out at high speed, violently impacting the elastic cylinder to produce local bulges, forming pulsed mechanical slapping and transient pulsed airflow. Meanwhile, during the circumferential movement, the auxiliary pull tube 7 touches the top block 14, forcing the free ends of multiple sealing blocks 13 to flip outward to form a gap. The pressurized hot gas accumulated in the inner barrel 3, under the action of the pressure gradient, suddenly rushes into the jet channel 15 through this gap, and under the acceleration effect of its conical tapered structure, it forms a transient high-pressure pulse, driving the soft column 10 to quickly straighten and rebound, directly beating and powerfully agitating the down in the annular space. Under the above triple synergistic effect, the entanglement and aggregation between down fibers are fully broken down, the moisture is accelerated to escape, and the loft is greatly restored. After the process continues until the preset time, the corresponding sealing discharge plate 22 is opened to discharge the down that has reached the loft requirement for subsequent filling process.

[0025] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Furthermore, it should be noted that, in the description of this invention, 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 according to the specific circumstances.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A down fluffing device for down garment processing, comprising a shell (1), characterized in that: An inner barrel (3) is fixedly installed inside the outer shell (1), and multiple partition plates (12) are fixedly connected to the inner circumferential surface of the inner barrel (3) along its axial direction. An elastic cylinder is fixedly connected between two adjacent partition plates (12). A rotatable fluffing drive column (2) is arranged coaxially inside the inner barrel (3). Multiple pushing components that can cause the elastic cylinder to suddenly bulge outward are arranged on the circumferential surface of the fluffing drive column (2). Multiple soft columns (10) that can rebound when gas is suddenly introduced are evenly arranged on the outer circumferential surface of the elastic cylinder.

2. The down fluffing device for down garment processing according to claim 1, characterized in that: The two adjacent partition plates (12), the inner barrel (3) and the elastic cylinder can be enclosed to form an annular space for fluffing down. The outer circumference of the outer shell (1) is provided with a plurality of sealing discharge plates (22) with one end passing through the outer shell (1) and the inner barrel (3) in sequence. The lower surface of the inner barrel (3) is fixedly connected to the inner bottom surface of the outer shell (1). The outer circumference of the inner barrel (3) is uniformly fixedly connected with a plurality of auxiliary stabilizing blocks (11) with one end set on the inner circumference of the outer shell (1). The upper surface of the outer shell (1) is fixedly installed with a drive motor for driving the fluffing drive column (2) to rotate. The drive shaft of the drive motor extends into the outer shell (1) and is fixedly connected to the fluffing drive column (2).

3. The down fluffing device for down garment processing according to claim 2, characterized in that: The outer periphery of the outer shell (1) is fixedly connected with a plurality of second air inlet pipes (28) with one end extending into the outer shell (1). The plurality of second air inlet pipes (28) correspond one-to-one with a plurality of annular spaces. The end of the second air inlet pipe (28) extending into the outer shell (1) is fixedly connected to the inner barrel (3). The inner barrel (3) has a plurality of inclined nozzles (16) on its periphery that enable the second air inlet pipes (28) to communicate with the annular spaces. The upper surface of the outer shell (1) is fixedly connected with a first air outlet pipe (23) communicating with it.

4. The down fluffing device for down garment processing according to claim 3, characterized in that: The elastic cylinder includes an elastic ring cylinder (5) with both its upper and lower ends fixedly connected to the corresponding partition plate (12). Multiple sealing soft plates (4) are fixedly connected to the circumference of the elastic ring cylinder (5). Both the elastic ring cylinder (5) and the sealing soft plates (4) are made of breathable fabric. Multiple soft columns (10) are fixedly connected to the corresponding sealing soft plates (4).

5. The down fluffing device for down garment processing according to claim 4, characterized in that: The outer circumferential surface of the fluffy drive column (2) is provided with an installation ring groove (6). The pushing component includes a plurality of limiting barrels (8) that are uniformly fixedly connected to the inner circumferential surface of the installation ring groove (6), and auxiliary pull cylinders (7) that are slidably connected to the limiting barrels (8). The inner wall of the limiting barrel (8) is slidably connected to an impact plate (17) that can suddenly move toward the elastic cylinder. A synchronous connecting plate (27) is fixedly connected between two adjacent auxiliary pull cylinders (7).

6. A down fluffing device for down garment processing according to claim 5, characterized in that: The impact plate (17) is slidably connected to a second spring (18) at one end within the limiting barrel (8). The second spring (18) is fixedly connected to a mounting slider (19) at the end away from the impact plate (17). The mounting slider (19) is slidably connected within the limiting barrel (8). The inner circumferential surface of the auxiliary pull tube (7) is provided with multiple mounting grooves. A limiting block (20) is slidably connected within the mounting groove, with one end of it able to be engaged within the impact plate (17). The end of the limiting block (20) away from the impact plate (17) is fixedly connected to a third spring (21) at one end located within the mounting groove. The end of the auxiliary pull tube (7) near the axis of the fluffy drive column (2) is fixedly connected to a first spring (9). The end of the first spring (9) away from the auxiliary pull tube (7) is fixedly connected to the inner circumferential surface of the mounting ring groove (6).

7. A down fluffing device for down garment processing according to claim 6, characterized in that: The top of the inner circumferential surface of the outer shell (1) is fixedly connected to a gathering cylinder, and the bottom of the gathering cylinder is fixedly connected to the inner barrel (3). The inner wall of the gathering cylinder is fixedly connected to a mounting circular plate (24), and the lower surface of the mounting circular plate (24) is fixedly connected to multiple inclined push plates (25). One end of the first auxiliary pull cylinder (7) from top to bottom is fixedly connected to a limiting push plate (26) that can abut against the inclined push plate (25).

8. A down fluffing device for down garment processing according to claim 7, characterized in that: The sealing plate (4) is inlaid with sealing blocks (13) that correspond one-to-one with the positions of multiple soft pillars (10) and can form a complete circular plate shape. The converging ends of the multiple sealing blocks (13) on the side away from the soft pillars (10) are all fixedly connected with top blocks (14).

9. A down fluffing device for down garment processing according to claim 8, characterized in that: The flexible column (10) has an air jet channel (15) with both ends open, and the opening of the air jet channel (15) away from the sealing flexible plate (4) gradually narrows.

10. A method for fluffing down using the down fluffing device for down garment processing according to any one of claims 1 to 9, characterized in that... Includes the following steps: The pre-treated down feathers are then fed into the annular space; Clean gas is introduced into the annular space through the second air inlet pipe (28); Gas is discharged to the outside of the outer casing (1) through the first vent pipe (23); Start the drive motor to drive the fluffing drive column (2) to rotate at the set speed and maintain the rotation for the set time so that the down reaches the set fluffy state; The down feathers are then removed after they have become fluffy, making it easier for them to be processed later.

Images