Down feather fiber structure stabilizing device and stabilizing method based on electrostatic self-locking

Abstract

The invention relates to the technical field of textile material processing, in particular to a down feather fiber structure stabilizing device and method based on electrostatic self-locking. The down feather fiber structure stabilizing device comprises a rack, a conveying mechanism, an electrostatic mechanism and a net drawing machine, different from a traditional technical path depending on a quilting or heat bonding mode, the electrostatic field between the upper polar plate and the lower polar plate induces self-polarization, expansion and three-dimensional mechanical interlocking of down feather fibers, so that a stable self-supporting structure is directly given to a pure down feather fiber net on the premise of not introducing any heterogeneous material; therefore, the problems of weight increment, hardening, air permeability reduction and the like caused by addition of an adhesive or a base material are thoroughly avoided, the problem of poor local warm keeping caused by quilting stitches or composite welding spots is substantially eliminated, and natural top-level performance such as lightness, softness, fluffiness, heat insulation uniformity and the like of the down feather flocculus is completely reserved.

Description

Technical Field

[0001] This invention relates to the field of textile material processing technology, specifically to a device and method for stabilizing down fiber structure based on electrostatic self-locking. Background Technology

[0002] Down, as one of the lightest, fluffiest and best insulating materials in nature, relies on a multi-level spatial branching structure composed of down core, down branches and down twigs to effectively store a large amount of still air.

[0003] However, this complex structure that endows it with outstanding performance also presents inherent challenges when down is processed into practical materials: how to transform fluffy, discrete down fibers without self-adhesion into wadding or padding materials with sufficient structural strength and dimensional stability. This key process is usually called "netting" or "setting".

[0004] Currently, the mainstream technologies for achieving the web-fixation of down fibers all belong to the "external reinforcement" paradigm, that is, introducing additional materials or applying external constraints into the down fiber assembly to maintain its shape. Existing technologies can be specifically divided into two categories:

[0005] I. Physically Constrained Web Method: This is a widely used technology in the industry, mainly including "quilting" and "laminated composite". Quilting involves sandwiching down wadding between two layers of fabric, using stitches to form a mesh that locks the sections in place. Laminated composite involves bonding down with a substrate such as non-woven fabric through hot-pressing and spot welding. Although these two methods avoid chemical additives, they introduce structural defects: quilting creates down-free areas at the seams, disrupting the uniformity of insulation and limiting loft; while the addition of a substrate (such as non-woven fabric) to a laminated composite inevitably increases the surface density and weight of the final product, partially offsetting the advantage of down as the "lightest insulating material". At the same time, the hardness and texture of the substrate also affect the overall softness and comfort of the product.

[0006] II. Chemical bonding and web-fixing method: The core of this process is to mix hot melt adhesive powder, low-melting-point chemical fibers, or adhesive emulsions into or apply to the surface of the already spread loose down fiber web. Then, the adhesive material is melted or solidified by hot pressing or drying, thereby "bonding" and fixing the down fibers. However, although this method can achieve effective shaping, its inherent defects are significant: the added non-down components (adhesives) directly increase the weight of the product, harden the feel, and may block the pores between fibers, damaging the natural lightweight, softness, and high breathability of down.

[0007] In summary, there has long been an urgent need in this field for an endogenous physical web-forming technology: that is, a technology that directly enables down fibers to form a stable interlocking network structure through physical action without the need for any chemical adhesives or external reinforcing substrates. Summary of the Invention

[0008] To address the aforementioned problems, the present invention proposes the following technical solution: a down fiber structure stabilization device based on electrostatic self-locking, comprising a frame, a conveying mechanism, an electrostatic mechanism, and a net-collecting machine; the conveying mechanism is fixedly installed on the frame, the electrostatic mechanism is fixedly installed on the frame and above the conveying mechanism, and the net-collecting machine is fixedly installed on the frame and to the left of the conveying mechanism; the electrostatic mechanism includes a height adjustment component fixedly installed on the frame, the height adjustment component having an upper electrode plate connected to its lower side, and the upper electrode plate being located above the conveying mechanism.

[0009] Preferably, the conveying mechanism is a conveyor belt structure, which includes a conveyor belt body and bearing rollers. At least two bearing rollers are provided. The bearing rollers are rotatably mounted on the frame and connected to an external power source. The conveyor belt body wraps around all the bearing rollers to form a reciprocating structure.

[0010] Preferably, a lower electrode plate is fixedly installed on the frame on the side of the conveyor belt away from the upper electrode plate, and the lower electrode plate and the upper electrode plate are respectively connected to the two poles of an external power source.

[0011] Preferably, the voltage range of the power supply connecting the lower electrode plate and the upper electrode plate is 5-30KV.

[0012] Preferably, the height adjustment component is a combination of a lead screw and a motor. The lower end of the lead screw is connected to the upper electrode plate. The motor rotates to drive the lead screw to rise or fall, thereby driving the upper electrode plate to move up and down.

[0013] Preferably, the upper electrode plate and the lower electrode plate are arranged in parallel, and the portion of the conveyor belt between the upper electrode plate and the lower electrode plate is also parallel to the upper electrode plate and the lower electrode plate.

[0014] Preferably, the conveyor belt is made of insulating material.

[0015] Preferably, within the adjustable range of the gap between the lower and upper electrode plates, the dielectric strength of the conveyor belt itself is at least twice the maximum operating voltage.

[0016] Preferably, within the adjustable range of the gap between the lower and upper plates, the attenuation rate of the electric field between the upper and lower plates by the conveyor belt body is no more than 30%.

[0017] Furthermore, the present invention also provides a method for stabilizing the structure of down fibers based on electrostatic self-locking, comprising the following steps:

[0018] S1. Feeding: Place the loose down fiber web on the conveyor belt and put the end of the loose down fiber web into the net-collecting machine;

[0019] S2, Polarization and Interpenetration: The power supply to the lower and upper plates is turned on, so that an electric field is formed between them. The down fibers in the loose down fiber web are polarized, interpenetrated and entangled under the action of static electricity. Then, the motor corresponding to the lead screw is controlled to make the upper plate move back and forth repeatedly between pressing the down fiber web and not contacting the down fiber web, which enhances the self-locking between the fibers, thereby obtaining a stable down wadding structure.

[0020] S3. Winding: Start the power source corresponding to the winding machine and the carrying roller to wind up the down lint into a roll inside the winding machine and achieve continuous operation.

[0021] The beneficial effects of this invention are as follows: First, unlike the traditional technical approach that relies on chemical bonding or physical interlayering, this invention induces the down fibers to polarize, unfold, and undergo three-dimensional mechanical interlocking through the electrostatic field between the upper and lower electrodes. This directly endows the pure down fiber web with a stable self-supporting structure without introducing any foreign materials. This not only completely avoids problems such as weight gain, hardening, and decreased air permeability caused by adding adhesives or substrates, but also fundamentally eliminates the problem of poor local insulation caused by quilting stitches or composite welding points. This allows the natural top-quality properties of down wadding, such as lightness, softness, fluffiness, and uniform heat insulation, to be fully preserved. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a cross-sectional front view of the present invention.

[0024] Figure 3 This is the right view after the present invention has been cut.

[0025] In the diagram: 1. Frame; 2. Conveying mechanism; 21. Conveyor belt; 22. Carrying roller; 3. Electrostatic mechanism; 31. Height adjustment assembly; 311. Lead screw; 32. Upper electrode plate; 33. Lower electrode plate; 4. Net collecting machine. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below.

[0027] See Figure 1A down fiber structure stabilization device based on electrostatic self-locking includes a frame 1, a conveying mechanism 2, an electrostatic mechanism 3, and a net-collecting machine 4. The conveying mechanism 2 is fixedly installed on the frame 1. The electrostatic mechanism 3 is fixedly installed on the frame 1 above the conveying mechanism 2, and the net-collecting machine 4 is fixedly installed on the frame 1 to the left of the conveying mechanism 2. The electrostatic mechanism 3 includes a height adjustment component 31 fixedly installed on the frame 1. The height adjustment component 31 has an upper electrode plate 32 connected to its lower side. The upper electrode plate 32 is located on the upper side of the conveying mechanism 2; the conveying mechanism 2 is a conveyor belt structure, which includes a conveyor belt body 21 and a bearing roller 22. At least two bearing rollers 22 are provided. The bearing rollers 22 are rotatably mounted on the frame 1 and connected to an external power source. The conveyor belt body 21 surrounds all the bearing rollers 22 to form a reciprocating structure. A lower electrode plate 33 is fixedly installed on the frame 1 on the side of the conveyor belt body 21 away from the upper electrode plate 32. The lower electrode plate 33 and the upper electrode plate 32 are respectively connected to the two poles of an external power source.

[0028] This invention differs significantly from traditional techniques that rely on chemical bonding or physical interlayering. Instead, it induces the down fibers to polarize, unfold, and undergo three-dimensional mechanical interlocking through an electrostatic field between the upper electrode 32 and the lower electrode 33. This directly endows the pure down fiber web with a stable self-supporting structure without introducing any foreign materials. This not only completely avoids problems such as weight gain, hardening, and decreased breathability caused by adding adhesives or substrates, but also fundamentally eliminates the problem of poor local insulation caused by quilting stitches or composite welding points. As a result, the natural superior properties of down wadding, such as lightness, softness, fluffiness, and uniform heat insulation, are fully preserved.

[0029] The voltage range of the power supply connecting the lower electrode plate 33 and the upper electrode plate 32 is 5-30KV; the height adjustment component 31 is a combination of a lead screw 311 and a motor. The lower end of the lead screw 311 is connected to the upper electrode plate 32. The rotation of the motor drives the lead screw 311 to rise or fall, thereby driving the upper electrode plate 32 to move up and down; the upper electrode plate 32 and the lower electrode plate 33 are arranged in parallel, and the portion of the conveyor belt 21 between the upper electrode plate 32 and the lower electrode plate 33 is also parallel to the upper electrode plate 32 and the lower electrode plate 33; the conveyor belt 21 is made of insulating material; within the distance adjustment range between the lower electrode plate 33 and the upper electrode plate 32, the dielectric strength of the conveyor belt 21 is at least twice the maximum working voltage; within the distance adjustment range between the lower electrode plate 33 and the upper electrode plate 32, the attenuation rate of the electric field between the upper electrode plate 32 and the lower electrode plate 33 by the conveyor belt 21 is no more than 30%.

[0030] Furthermore, the present invention also provides a method for stabilizing the structure of down fibers based on electrostatic self-locking, comprising the following steps:

[0031] S1. Feeding: Place the loose down fiber web on the conveyor belt 21, and put the end of the loose down fiber web into the net-collecting machine 4;

[0032] S2, Polarization and Interpenetration: The power supply to the lower electrode plate 33 and the upper electrode plate 32 is turned on, so that an electric field is formed between them. The down fibers in the loose down fiber web are polarized, interpenetrated and entangled under the action of static electricity. Then, the motor corresponding to the lead screw 311 is controlled to make the upper electrode plate 32 move back and forth repeatedly between pressing the down fiber web and not contacting the down fiber web, which enhances the self-locking between the fibers, thereby obtaining a stable down wadding structure.

[0033] S3. Winding: Start the power source corresponding to the winding machine 4 and the carrying roller 22 to wind up the down lint into a roll in the winding machine 4 and achieve continuous operation.

[0034] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered within the protection scope of the present invention.

Claims

1. A static self-locking based structure stabilizing device for down fibers comprising a frame (1), characterized in that, Also include conveying mechanism (2), electrostatic mechanism (3), net collector (4); The conveying mechanism (2) is fixedly installed on the rack (1), and the electrostatic mechanism (3) is fixedly installed on the rack (1) and located on the upper side of the conveying mechanism (2); the net collector (4) is fixedly installed on the rack (1) and located on the left side of the conveying mechanism (2); The electrostatic mechanism (3) comprises a height adjusting assembly (31) fixedly installed on the rack (1), and the upper side of the height adjusting assembly (31) is connected with an upper pole plate (32), and the upper pole plate (32) is located on the upper side of the conveying mechanism (2).

2. A device for stabilizing a structure of down fibers based on electrostatic self-locking according to claim 1, characterized in that, The conveying mechanism (2) is a conveying belt structure, and the conveying mechanism (2) comprises a conveying belt body (21) and a bearing roller (22), the bearing roller (22) is provided with at least two, the bearing roller (22) is rotatably installed on the rack (1) and connected with an external power source, and the conveying belt body (21) is formed into a reciprocating structure by surrounding all the bearing rollers (22).

3. A static self-locking based structure stabilizing device for down fibers according to claim 2, characterized in that, The lower pole plate (33) is fixedly installed on the rack (1) and located on the side of the conveying belt body (21) away from the upper pole plate (32), and the lower pole plate (33) is connected with the upper pole plate (32) and an external power source.

4. A static self-locking based structure stabilizing device for down fibers according to claim 3, characterized in that, The voltage range of the power source connected with the lower pole plate (33) and the upper pole plate (32) is 5-30KV.

5. A static self-locking based structure stabilizing device for down fibers according to claim 4, characterized in that, The height adjusting assembly (31) is a combination of a lead screw (311) and a motor, the lower end of the lead screw (311) is connected with the upper pole plate (32), the lead screw (311) is driven to ascend or descend by the motor, thereby driving the upper pole plate (32) to move up and down.

6. A static self-locking based structure stabilizing device for down fibers according to claim 5, characterized in that, The upper pole plate (32) and the lower pole plate (33) are arranged in parallel, and part of the conveying belt body (21) between the upper pole plate (32) and the lower pole plate (33) is also parallel to the upper pole plate (32) and the lower pole plate (33).

7. A static self-locking based structure stabilizing device for down fibers according to claim 6, characterized in that, The conveying belt body (21) is made of insulating material.

8. A static self-locking based structure stabilizing device for down fibers according to claim 7, characterized in that, In the spacing adjustment range of the lower pole plate (33) and the upper pole plate (32), the self dielectric strength of the conveying belt body (21) is at least 2 times of the maximum working voltage.

9. A static self-locking based structure stabilizing device for down fibers according to claim 7, characterized in that, In the spacing adjustment range of the lower pole plate (33) and the upper pole plate (32), the weakening rate of the conveying belt body (21) to the electric field between the upper pole plate (32) and the lower pole plate (33) is not more than 30%.

10. A method for stabilizing a down fiber structure based on electrostatic self-locking, applied to the device for stabilizing a down fiber structure based on electrostatic self-locking according to any one of claims 8-9, characterized in that, The method comprises the following steps: S1, feeding: placing the loose down feather fiber net on the conveying belt body (21), and putting the end of the loose down feather fiber net into the net collector (4); S2, polarization and insertion: starting the power supply of the lower pole plate (33) and the upper pole plate (32) to form an electric field therebetween, the down feather fibers in the loose down feather fiber net are polarized, inserted and entangled under the action of static electricity, then the corresponding motor of the lead screw (311) is controlled to make the upper pole plate (32) repeatedly move back and forth between the tight down feather fiber net and the non-contact down feather fiber net, thereby enhancing the self-locking between the fibers and obtaining a stable down feather flake structure; S3, winding: starting the net collector (4) to wind the down feather flake into a roll in the net collector (4).

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