Preparation method of self-heating cashmere fabric

Abstract

The invention relates to a preparation method of a self-heating cashmere fabric, which comprises the following steps: cashmere fiber treatment, cashmere carding, primary drawing, secondary drawing, spinning, immersion bath, weaving, ironing and finished product inspection, and is characterized in that cashmere is subjected to cashmere carding treatment through a cashmere carding mechanism, and in the cashmere carding process, a powdery self-heating fiber prefabricated material is added into the cashmere. According to the preparation method, a self-heating prefabricated material is added into cashmere fibers before spinning, so that the self-heating prefabricated material is locked through mutual twisting in the process that the cashmere fibers form yarns through spinning, and cashmere yarns are pre-felted through micro scales of the cashmere fibers in the dipping bath process, so that the self-heating raw material is effectively stabilized in the cashmere yarns; the self-heating prefabricated material directly reaches the deep part of the cashmere fabric, so that the bonding firmness of the self-heating prefabricated material and the cashmere fabric is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cashmere fabrics, and in particular relates to a method for preparing a self-heating cashmere fabric. Background Art

[0002] Cashmere comes from goats and is the fine hair at the root of wool. It is soft and comfortable, warm, light and breathable. Self-heating fabric is an emerging textile product that uses various methods to make the fabric have a self-heating effect.

[0003] The patent application with application number 202311318452.X discloses a magnetic self-heating antibacterial down jacket fabric and a preparation method thereof, in which self-heating fiber preforms are added by melt spinning to form self-heating fibers. When this self-heating fiber preform is applied to cashmere fabric, it cannot be added to the cashmere fiber by melt spinning. Due to the felting characteristics of cashmere, other self-heating materials in the form of solutions cannot be penetrated deep into the cashmere fabric by the padding method, and its firmness is poor. Summary of the invention

[0004] The purpose of the present invention is to provide a method for preparing a self-heating cashmere fabric in order to solve the above-mentioned problem.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A method for preparing a self-heating cashmere fabric comprises the following steps: cashmere fiber processing, combing, first and second combing, spinning, dipping, weaving, ironing, and finished product inspection, wherein the cashmere is combed by a combing mechanism, and during the combing process, a powdered self-heating prefabricated material is added to the cashmere, wherein the self-heating prefabricated material comprises, by weight, 20-40 parts of metal tungsten particles, 10-15 parts of magnetic powder particles, and 30-50 parts of black tourmaline particles.

[0007] As a further optimization scheme of the present invention, the cashmere fiber processing process includes washing and drying.

[0008] As a further optimization scheme of the present invention, the particle size of the self-heating preform is 20-400nm.

[0009] As a further optimization scheme of the present invention, the carding mechanism includes a feeding mechanism, a cylinder assembly, a doffer, and a chopper, and also includes a powder distribution assembly for uniformly adding self-heating preformed material to the cashmere. The feeding mechanism, the cylinder assembly, the doffer, and the chopper are all common devices of cashmere carding machines, which comb the cashmere through the speed difference between the components. The cylinder is used to comb the fibers, the doffer receives and condenses the fibers combed by the cylinder, and the chopper is used to peel off the fibers on the doffer.

[0010] As a further optimization scheme of the present invention, the cylinder assembly includes a cylinder, combing needles distributed on the outer surface of the cylinder, and spray holes, wherein the powder distribution assembly is located in the cylinder, and a spoke plate is provided in the cylinder, and an airflow passing through the spray hole is formed by centrifugal force, so that the self-heating preform hits the cashmere on the surface of the cylinder, and the self-heating preform is combined with the cashmere by spraying out from the inner side of the cylinder to the outside. During the high-speed rotation of the cylinder assembly, the centrifugal force helps the powder to penetrate the cashmere and fully combine, and the cashmere on the surface of the cylinder assembly itself is equivalent to a filter, which can also prevent the self-heating preform from forming a large amount of dust to pollute the environment during the collision and combination process. Furthermore, in order to facilitate the full adsorption of the self-heating preform and cashmere, each combing needle can be set to a plastic material, which constantly rubs against the cashmere during the combing process, so that the cashmere surface is charged, so as to better adsorb the self-heating preform.

[0011] As a further optimization scheme of the present invention, the cylinder body is divided into several annular cavities by partitions, and several air inlet pipes are arranged in the cylinder body for communicating with each annular cavity to replenish gas into the annular cavity when the centrifugal airflow is formed. By setting the annular cavity, the self-heating preform is conveniently diffused toward the outer circle evenly by centrifugal force, and gas is delivered into each annular cavity through the air inlet pipe.

[0012] The cylinder is supported by at least six supporting wheels, which are located at both ends of the cylinder and distributed in a circumferential array along the cylinder. The surfaces of the supporting wheels are also provided with flanges to prevent axial movement of the cylinder. The arrangement of the supporting wheels allows the cylinder to be supported by the edges at both ends, leaving space on the shaft for arranging a powder distribution assembly.

[0013] As a further optimization scheme of the present invention, the powder distribution assembly includes a powder distribution tube arranged in the cylinder and coinciding with the axis of the cylinder, the outer surface of the powder distribution tube is radially inwardly recessed into a rotating annular groove, and the side wall of the groove is penetrated by a through hole. The powder distribution tube allows the self-heating preform to leave the powder distribution tube through the through hole and enter the cylinder through axial movement. The self-heating preform in the powder distribution tube is dispersed at the edge through centrifugal force, and then the self-heating preform leaks to both sides and enters the cylinder through the axial movement of the powder distribution tube, which helps to disperse the self-heating preform in small amounts, multiple times and evenly.

[0014] As a further optimization scheme of the present invention, both ends of the powder distribution cylinder pass through the cylinder body, and shaft sleeves are provided at the connection with the cylinder body, the shaft sleeves are slidably connected with the cylinder body and rotatably connected with the powder distribution cylinder, the powder distribution cylinder is driven to rotate by the driving part, and the end of the powder distribution cylinder is provided with a sliding connection part which is slidably connected with the driving shaft of the driving part, and the circumferential surface of the powder distribution cylinder is provided with at least one pair of ring plates, and the opposite surfaces of the ring plates are provided with first one-way teeth in the same direction, and the surface of the cylinder body is provided with second one-way teeth corresponding to the first one-way teeth. When one pair of one-way teeth is engaged under force, the other pair of one-way teeth is in a separated state. Through this scheme, the powder distribution cylinder is axially moved, and the powder distribution cylinder is driven to rotate by the driving part, and then the first one-way teeth on one side are engaged with the second one-way teeth, thereby driving the cylinder body to rotate. When powder distribution is needed, the powder distribution cylinder is decelerated by controlling the deceleration, and the cylinder body continues to rotate forward due to inertia, and the back inclined surfaces of the one-way teeth push each other, causing the powder distribution cylinder to move axially.

[0015] The beneficial effects of the present invention are:

[0016] The present invention adds self-heating prefabricated material into cashmere fibers before spinning, so that the cashmere fibers lock the self-heating prefabricated material by twisting with each other during the spinning process to form yarns. During the immersion process, the cashmere yarns are pre-felted by microscopic scales of the cashmere fibers, which effectively stabilizes the self-heating raw material in the cashmere yarns, and enables the self-heating prefabricated material to reach deep into the cashmere fabric, thereby increasing the firmness of the combination with the cashmere fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front cross-sectional view of the cylinder assembly of the present invention;

[0018] Figure 2 is a side view of the cylinder assembly of the present invention;

[0019] Figure 3 is a side cross-sectional view of the cylinder assembly of the present invention;

[0020] Figure 4 The present invention Figure 3 A magnified view of the structure of part A;

[0021] Figure 5 It is a schematic diagram of the meshing of the first one-way tooth and the second one-way tooth in the present invention;

[0022] Figure 6 This is a schematic diagram of the axial movement of the powder distribution drum in the present invention;

[0023] In the figure: 1. feeding mechanism; 2. cylinder assembly; 21. cylinder body; 22. combing needle; 23. supporting wheel; 24. spray hole; 25. annular cavity; 26. spoke plate; 27. air inlet pipe; 3. powder distribution assembly; 31. powder distribution cylinder; 32. driving part; 33. sliding connection part; 34. groove; 35. through hole; 36. guide rib; 37. ring plate; 38. first one-way tooth; 39. second one-way tooth; 310. bushing; 311. feeding pipe; 4. doffer; 5. chopping knife; 6. protective box. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Example 1

[0026] A method for preparing a self-heating cashmere fabric comprises the following steps: cashmere fiber processing, combing, first and second combing, spinning, dipping, weaving, ironing, and finished product inspection, wherein the cashmere is combed by a combing mechanism, and during the combing process, a powdered self-heating prefabricated material is added to the cashmere, wherein the self-heating prefabricated material comprises, by weight, 20-40 parts of metal tungsten particles, 10-15 parts of magnetic powder particles, and 30-50 parts of black tourmaline particles.

[0027] By adding self-heating preformed materials into the cashmere fibers before spinning, the cashmere fibers can lock the self-heating preformed materials by twisting with each other during the spinning process to form yarns. During the immersion process, the microscopic scales of the cashmere fibers cause the cashmere yarn to be pre-felted, which effectively stabilizes the self-heating raw materials in the cashmere yarns, allowing the self-heating preformed materials to reach deep into the cashmere fabric, thereby increasing the firmness of its combination with the cashmere fabric.

[0028] The cashmere fiber processing process includes washing and drying, and the particle size of the self-heating preform is 20-400nm.

[0029] Specifically, in order to make the self-heating preform evenly combined with the cashmere fiber, the preform is added during the combing process through the following combing mechanism, such as Figure 1-6 As shown, the carding mechanism includes a feeding mechanism 1, a cylinder assembly 2, a doffer 4, a chopper 5, and also includes a powder distribution assembly 3 for uniformly adding self-heating preformed material to the cashmere. The feeding mechanism 1, the cylinder assembly 2, the doffer 4, and the chopper 5 are all common devices of a cashmere carding machine, which combs the cashmere through the speed difference between the components. The cylinder is used to comb the fibers, the doffer 4 receives and condenses the fibers combed by the cylinder, and the chopper 5 is used to peel off the fibers on the doffer 4. A protective box 6 can also be provided for external protection.

[0030] The cylinder assembly 2 includes a cylinder 21, combing needles 22 distributed on the outer surface of the cylinder 21, and a spray hole 24, wherein the powder distribution assembly 3 is located in the cylinder 21, and a spoke plate 26 is provided in the cylinder 21. An airflow passing through the spray hole 24 is formed by centrifugal force, so that the self-heating preform hits the cashmere on the surface of the cylinder 21. This scheme combines the self-heating preform with the cashmere by spraying out from the inside of the cylinder 21. During the high-speed rotation of the cylinder assembly 2, the centrifugal force helps the powder to penetrate the cashmere for full combination, and the cashmere on the surface of the cylinder assembly 2 itself is equivalent to a filter, which can also prevent the self-heating preform from forming a large amount of dust to pollute the environment during the collision and combination process. Furthermore, in order to facilitate the full adsorption of the self-heating preform and the cashmere, each combing needle 22 can be set to a plastic material, which constantly rubs against the cashmere during the combing process, so that the cashmere surface is charged to better adsorb the self-heating preform.

[0031] The cylinder 21 is divided into a plurality of annular cavities 25 by partitions, and a plurality of air inlet pipes 27 are provided in the cylinder 21 for communicating with each annular cavity 25 to replenish gas to the annular cavity 25 when a centrifugal airflow is formed. The annular cavity 25 is provided to facilitate the self-heating preform to diffuse evenly toward the outer circle by centrifugal force, and gas is delivered to each annular cavity 25 through the air inlet pipe 27.

[0032] The cylinder 21 is supported by at least six support wheels 23, which are located at both ends of the cylinder 21 and distributed in a circumferential array along the cylinder 21. The surface of the support wheel 23 is also provided with a flange to prevent the axial movement of the cylinder 21. The setting of the support wheel 23 allows the cylinder 21 to be supported by the edges at both ends, leaving the axial space for setting the powder distribution assembly 3.

[0033] The powder distribution assembly 3 includes a powder distribution cylinder 31 which is arranged in the cylinder 21 and coincides with the axis of the cylinder 21. The outer surface of the powder distribution cylinder 31 is radially inwardly recessed into a rotating annular groove 34, and a through hole 35 is penetrated through the side wall of the groove 34. The powder distribution cylinder 31 axially moves so that the self-heating preform leaves the powder distribution cylinder 31 through the through hole 35 and enters the cylinder 21. The self-heating preform in the powder distribution cylinder 31 is dispersed at the edge through centrifugal force, and then the self-heating preform leaks out to both sides into the groove 34 through the axial movement of the powder distribution cylinder 31, and further enters the cylinder 21, which helps to disperse the self-heating preform in small amounts, multiple times and evenly.

[0034] Both ends of the powder distributing cylinder 31 pass through the cylinder body 21, and a shaft sleeve 310 is provided at the connection with the cylinder body 21. The shaft sleeve 310 is slidably connected to the cylinder body 21 and is rotatably connected to the powder distributing cylinder 31. The powder distributing cylinder 31 is driven to rotate by the driving part 32, and a sliding connection part 33 is provided at the end of the powder distributing cylinder 31 to be slidably connected to the driving shaft of the driving part 32. At least a pair of ring plates 37 are provided on the circumferential surface of the powder distributing cylinder 31. The opposite surface / opposite surface of the ring plate 37 is provided with a first one-way tooth 38 in the same direction. The surface of the cylinder body 21 is provided with a first one-way tooth 38 in the same direction. The one-way teeth 38 correspond to the second one-way teeth 39, when one pair of one-way teeth are engaged under force, the other pair of one-way teeth are in a separated state. Through this scheme, the powder distributing cylinder 31 is allowed to move axially, and the driving part 32 drives the powder distributing cylinder 31 to rotate, and then the first one-way teeth 38 on one side are engaged with the second one-way teeth 39, thereby driving the cylinder body 21 to rotate. When powder distributing is needed, the powder distributing cylinder 31 is controlled to slow down, and the cylinder body 21 continues to rotate forward due to inertia, and the back inclined surfaces of the one-way teeth push each other, so that the powder distributing cylinder 31 moves axially.

[0035] Specifically, Figure 5-6 As shown, Figure 5 The middle powder dispensing cylinder 31 rotates in the direction shown in the figure driven by the driving part 32, and the first one-way tooth 39 on the ring plate 37 on the right side thereof meshes with the corresponding second one-way tooth 39, driving the cylinder 21 to rotate and perform the combing treatment. When powder dispensing is required, the powder dispensing cylinder 31 is decelerated by controlling the deceleration (the deceleration can be performed by the friction force of an external device), and the cylinder 21 continues to rotate due to inertia. The inertia can be enhanced by adding a flywheel, and the rotation direction of the cylinder 21 relative to the powder dispensing cylinder 31 is as follows: Figure 6 As shown, the left side is no longer meshed, but after rotating a certain angle, the powder dispensing cylinder 31 is pushed to slide to the left through the inclined surface, and the width of the gap is greater than the length of the one-way tooth. At this time, the first one-way tooth 38 on the left side is directly opposite to the gap of the second one-way tooth 39. When the powder dispensing cylinder 31 moves to the left, the first one-way tooth 38 on the left side enters the gap of the second one-way tooth 39 until the second one-way tooth 39 on the right side is aligned with the gap of the first one-way tooth 38. The first one-way tooth 38 on the left side fits with the inclined surface of the second one-way tooth 39, and the inclined surface of the second one-way tooth 39 pushes the powder dispensing cylinder 31 to move rightward, and so on, forming a reciprocating axial movement;

[0036] The powder distribution drum 31 accelerates again after a short deceleration, and starts to drive the drum 21 to accelerate after the rotation speed catches up with the drum 21, and the combing process will not be interrupted. The powder distribution drum 31 still has centrifugal force when decelerating, and the self-heating preformed material inside it still adheres to the edge of the powder distribution drum 31 and follows the rotation. A feed pipe 311 is provided at the end of the powder distribution drum 31 away from the driving part 32. The feed pipe 311 enters from the axis of the powder distribution drum 31 and is movably connected to the powder distribution drum 31 to adapt to the movement and rotation of the powder distribution drum 31. A guide rib 36 is also provided in the powder distribution drum 31 for pushing the self-heating preformed material entering through the feed pipe 311 into the inside (slow rotation is required during the pushing process, and high speed cannot generate a large centrifugal force).

[0037] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A method for preparing a self-heating cashmere fabric, characterized in that: The method comprises the following steps: cashmere fiber processing, carding, first and second carding, spinning, dipping, weaving, ironing and finished product inspection, wherein the cashmere is carded by a carding mechanism, and during the carding process, a powdered self-heating prefabricated material is added to the cashmere, and the self-heating prefabricated material comprises, by weight, 20-40 parts of metal tungsten particles, 10-15 parts of magnetic powder particles and 30-50 parts of black tourmaline particles.

2. The method for preparing a self-heating cashmere fabric according to claim 1, characterized in that: The cashmere fiber treatment process includes washing and drying.

3. The method for preparing a self-heating cashmere fabric according to claim 1, characterized in that: The particle size of the self-heating preform is 20-400 nm.

4. The method for preparing a self-heating cashmere fabric according to claim 1, characterized in that: The carding mechanism comprises a feeding mechanism (1), a cylinder assembly (2), a doffer (4), a chopping knife (5), and also comprises a powder spreading assembly (3) for uniformly adding self-heating prefabricated material to the cashmere.

5. The method for preparing a self-heating cashmere fabric according to claim 4, characterized in that: The cylinder assembly (2) comprises a cylinder (21), combing needles (22) distributed on the outer surface of the cylinder (21), and spray holes (24), wherein the powder distribution assembly (3) is located inside the cylinder (21), and a spoke plate (26) is provided inside the cylinder (21), and an air flow passing through the spray holes (24) is formed by centrifugal force, so that the self-heating preform hits the cashmere on the surface of the cylinder (21).

6. The method for preparing a self-heating cashmere fabric according to claim 5, characterized in that: The cylinder (21) is divided into a plurality of annular cavities (25) by partitions, and a plurality of air inlet pipes (27) are arranged in the cylinder (21) for communicating with each annular cavity (25) to replenish gas to the annular cavity (25) when a centrifugal airflow is formed.

7. The method for preparing a self-heating cashmere fabric according to claim 5, characterized in that: The cylinder (21) is supported by at least six supporting wheels (23). The supporting wheels (23) are located at both ends of the cylinder (21) and are distributed in an array along the circumference of the cylinder (21). The surfaces of the supporting wheels (23) are also provided with flanges to prevent the cylinder (21) from axial movement.

8. The method for preparing a self-heating cashmere fabric according to claim 5, characterized in that: The powder distribution assembly (3) comprises a powder distribution cylinder (31) arranged in the cylinder (21) and coinciding with the axis of the cylinder (21); the outer surface of the powder distribution cylinder (31) is recessed radially inward to form a rotating annular groove (34); a through hole (35) is provided through the side wall of the groove (34); the powder distribution cylinder (31) moves axially to allow the self-heating preform to pass through the through hole (35) and leave the powder distribution cylinder (31) and enter the cylinder (21).

9. The method for preparing a self-heating cashmere fabric according to claim 8, characterized in that: Both ends of the powder distributing cylinder (31) pass through the cylinder body (21), and a shaft sleeve (310) is provided at the connection with the cylinder body (21). The shaft sleeve (310) is slidably connected to the cylinder body (21) and is rotatably connected to the powder distributing cylinder (31). The powder distributing cylinder (31) is driven to rotate by a driving part (32), and a sliding connection part (33) is provided at the end of the powder distributing cylinder (31) to be slidably connected to the driving shaft of the driving part (32). The circumferential surface of the powder distributing cylinder (31) is provided with at least one pair of ring plates (37), and the opposite surface / opposite surface of the ring plate (37) is provided with first one-way teeth (38) in the same direction. The surface of the cylinder body (21) is provided with second one-way teeth (39) corresponding to the first one-way teeth (38), and when one pair of one-way teeth is engaged under force, the other pair of one-way teeth is in a separated state.

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