Preparation method of high-density needling revolving body

Abstract

The invention relates to the technical field of three-dimensional fabric forming, in particular to a preparation method of a high-density needling revolving body, the revolving body is formed by stacking a plurality of unit layers, and each unit layer is formed by stacking two-dimensional fiber cloth, an annular cloth belt and a net tire; the preparation process comprises the following steps: setting the thickness of the unit layer, and calculating the layer number of the two-dimensional fiber cloth and the layer number of the annular cloth belt in each unit layer; calculating the surface density of the two-dimensional fiber cloth and the annular cloth belt according to the density of the high-density needling revolving body to be prepared, the surface density of the net tire and the set thickness of the unit layer, and weaving the two-dimensional fiber cloth and the annular cloth belt respectively; two-dimensional fiber cloth is evenly laid on the outer surface of a weaving mold in the mother direction, an annular cloth belt is wound in the annular direction, a layer of net tire is laid on the outer surface of the outermost layer of fabric, the two-dimensional fiber cloth, the annular cloth belt and the net tire are needled in the thickness direction of the fabric, and unit layers are obtained; and repeating for multiple times until the superposition thickness of the unit layers meets the requirement, so as to obtain the high-density needling revolving body.

Description

Technical Field

[0001] The present invention relates to the technical field of three-dimensional fabric forming, and particularly to a method for preparing a high-density needle-punched rotating body. Background Art

[0002] A three-dimensional needle-punched fabric is composed of a needle-punched web and a fabric to form a unit layer. After each unit layer is needle-punched, the fiber bundles formed penetrate into the bottom fabric, and the fiber bundles in the thickness direction are formed by needle-punching to form connections, and a three-dimensional fabric is formed by repeating needle-punching multiple unit layers.

[0003] Generally, the method for preparing a three-dimensional needle-punched fabric is as described in Patent CN 106393727A, which uses a woven fabric, fibers and a web to form a unit layer, and a three-dimensional needle-punched fabric with a density of 0.3-0.88 g / cm 3 is prepared by needle-punching. This patent uses fibers to wind in a spiral or grid shape to prepare a three-dimensional needle-punched fabric; for example, Patent CN113638134A and Patent CN118438742A provide a fabric cut in a "-" and "|" shape on a fiber cloth to replace the web for needle-punching production to overall increase the fabric density. The method described is for the preparation of needle-punched flat products and does not describe the forming of a rotating body; Patent CN117818155A describes a method of using a carbon fiber spread cloth and an electric push peeling method to increase the density of the carbon cloth layer and eliminate the web in the fabric layer to improve the fabric density. However, after removing the web layer, the fabric layer will expand, which is not conducive to the preparation of high-density needle-punched fabrics, and it is difficult to apply this method to the preparation of rotating products; Patent CN106346635A describes a method for preparing a rotating body and a capped rotating body using a mechanical needle plate mechanism. The preparation process of the rotating body is simply described in the text, but the relevant parameters of high-density needle-punched fabrics and how to achieve high-density needle-punched fabrics are not reflected.

[0004] Therefore, in view of the above problems, the present invention urgently needs to provide a method for preparing a high-density needle-punched rotating body. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide a method for preparing a high-density needle-punched rotating body. By designing a two-dimensional fiber cloth and an annular cloth belt, and laying them along the generatrix direction and the circumferential direction of the high-density needle-punched rotating body respectively, and then needle-punching to form, the proportion of effective load-bearing fibers in the generatrix direction and the circumferential direction in the high-density needle-punched rotating body can be increased; and by the way of tightly winding the annular cloth belt and then needle-punching to form, the thickness of the unit layer is controlled, which is more conducive to the preparation of a high-density needle-punched preformed body.

[0006] The present invention provides a method for preparing a high-density needle-punched rotating body. The rotating body is formed by stacking multiple unit layers. Among them, the unit layer is formed by stacking a two-dimensional fiber cloth, an annular cloth belt and a web; the preparation process includes the following steps:

[0007] S1. Setting the thickness of the unit layer, and calculating the number of layers of the two-dimensional fiber cloth and the number of layers of the annular cloth belt in each unit layer according to the ratio of the parent direction bearing capacity to the annular direction bearing capacity required for the high-density needle-punched rotating body to be prepared and the thickness of the unit layer;

[0008] S2. Calculate the surface density of the two-dimensional fiber cloth and the annular cloth tape according to the density of the high-density needle-punched rotating body to be prepared, the surface density of the web and the set unit layer thickness, and weave the two-dimensional fiber cloth and the annular cloth tape respectively;

[0009] S3, preparing a unit layer on the outer surface of the weaving mold, the preparation process of the unit layer is: evenly laying the two-dimensional fiber cloth along the mother direction, winding the annular cloth tape along the annular direction, and laying the two-dimensional fiber cloth and the annular cloth tape according to the calculation result of step S1; after laying, laying a layer of mesh tire on the outer surface of the outermost fabric, and needle-punching the two-dimensional fiber cloth, the annular cloth tape and the mesh tire along the thickness direction of the fabric to obtain the unit layer;

[0010] S4, repeat S3 multiple times until the stacking thickness of the unit layers reaches the thickness of the high-density needle-punched rotating body to be prepared, thereby obtaining a high-density needle-punched rotating body.

[0011] Preferably, in S1, the step of calculating the number of layers of the two-dimensional fiber cloth and the annular fabric tape in the unit layer includes: calculating the ratio of the number of layers of the two-dimensional fiber cloth and the annular fabric tape to satisfy the following formula: n 布 / n 带 =bF 母 / aF 环 , where n 布 is the number of layers of the two-dimensional fiber cloth, n 带 is the number of layers of the annular fabric, a is the mass proportion of the two-dimensional warp yarn in the two-dimensional fiber cloth, b is the mass proportion of the annular weft yarn in the annular fabric, F 母 F is the parent direction bearing capacity required for the high-density needle-punched rotating body to be prepared, 环 is the hoop bearing capacity required for the high-density needle-punched rotating body to be prepared; the number of layers of the two-dimensional fiber cloth and the annular cloth belt is calculated according to the thickness of the unit layer and the ratio of the number of layers of the two-dimensional fiber cloth and the annular cloth belt.

[0012] Preferably, S21, calculating and obtaining the surface density of the two-dimensional fiber cloth and the annular cloth belt according to the density of the high-density needle-punched rotating body to be prepared, the surface density of the web and the set unit layer thickness;

[0013] S22, setting the material density of the warp and weft yarns and the fineness ratio of the warp and weft yarns in the two-dimensional fiber cloth and the annular cloth belt, wherein the material density of the warp and weft yarns is consistent, and the fineness ratio of the warp and weft yarns is (5-10):1;

[0014] S23, weaving the two-dimensional fiber cloth based on the surface density of the two-dimensional fiber cloth, the material density of the warp and weft yarns, and the fineness ratio of the warp and weft yarns;

[0015] S24. Prepare an auxiliary tooling with the same shape as the weaving mold. Based on the surface density of the annular tape, the density of the warp and weft yarns and the fineness ratio of the warp and weft yarns, weave a spiral line on the surface of the auxiliary tooling along the axis that coincides with the axis of the auxiliary tooling to obtain an annular tape. The pitch of the spiral line is consistent with the width of the annular tape, and reserve yarn ends at both ends of the annular tape.

[0016] Preferably, in S21, the surface density of the two-dimensional fiber cloth and the annular cloth belt satisfies the following formula: M 布 =(ρh-M 网 -bM 带 ) / a,M 带 =(ρh-M 网 -aM 布 ) / b, where ρ is the density of the high-density needle-punched rotating body, h is the set thickness of the unit layer, M 网 is the surface density of the mesh, M 布 is the surface density of the two-dimensional fiber cloth, M 带 is the surface density of the annular tape, a is the number of layers of the two-dimensional fiber cloth, and b is the number of layers of the annular tape.

[0017] Preferably, the two-dimensional fiber cloth and the annular cloth belt are both of a plain weave, a twill weave, or a satin weave structure.

[0018] Preferably, the width of the annular cloth belt is 10-20 mm, and the thickness of the unit layer is 1 mm.

[0019] Preferably, the thickness of the high-density needle-punched rotating body to be prepared is 30-40 mm, the radius of the weaving mold is 40-60 cm, and the height is 90-120 cm.

[0020] Preferably, in S3, when the two-dimensional fiber cloth, the annular cloth belt and the web tire are needled in the thickness direction, the yarn ends reserved at both ends of the annular cloth belt are inserted into the thickness direction; in S24, the length of the yarn ends reserved at both ends of the annular cloth belt is 10-15 mm.

[0021] Preferably, a tension device is installed at the head of the auxiliary tooling. During the process of winding the annular cloth tape using the auxiliary tooling, the tension device is used to control the winding tension of the annular cloth tape to compress the cloth layer in the unit layer.

[0022] Preferably, the raw materials of the two-dimensional fiber cloth, the annular cloth belt and the web tire are all one of glass fiber, high silica fiber, quartz fiber and carbon fiber.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention sequentially covers the surface of the needle punching mold with multiple layers of two-dimensional fiber cloth and annular cloth tape, and then covers the mesh tire and needle punches to form a tightly connected unit layer, which is stacked to obtain a high-density needle punching rotary body. The annular cloth tape interweaves multiple warp yarns and weft yarns and then wraps them around the fabric surface in an integrated structure, thereby improving the controllability of the yarn and eliminating the slippage phenomenon caused by the winding of the fiber bundles. The fabric can be pressed by controlling the tension to compress the thickness of the unit layer, thereby directly increasing the density of the high-density needle punching rotary body, facilitating the operation and improving the preparation efficiency. The present invention is also provided with an auxiliary tooling that is consistent with the shape of the needle punching model, and the annular cloth tape is pre-arranged according to the change in the mold diameter in the winding area of ​​the annular cloth tape, so that the annular cloth tape is completely attached to the fabric surface.

[0025] 2. In the present invention, the two-dimensional fiber cloth and the annular cloth belt are both designed with thick warp yarns and thin weft yarns to reduce the bending degree of the warp yarns. After the two-dimensional fiber cloth is laid along the mother direction of the high-density needle-punched rotor and the annular cloth belt is laid along the circumferential direction of the high-density needle-punched rotor, the proportion of effective load-bearing fibers in the high-density needle-punched rotor can be increased, thereby improving the mother direction and circumferential direction load-bearing capacity of the high-density needle-punched rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is an operation flow chart of the method for preparing a high-density acupuncture rotating body according to an embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the laying direction of the two-dimensional fiber cloth and the annular cloth belt in S3 of the method for preparing a high-density needle-punched rotating body according to an embodiment of the present invention;

[0028] Figure 3 2 is a schematic structural diagram (cross-sectional view) of a high-density acupuncture rotating body according to an embodiment of the present invention;

[0029] Figure 4 is a structural schematic diagram (stereoscopic diagram) of a two-dimensional fiber cloth according to an embodiment of the present invention;

[0030] Figure 5 1 is a schematic structural diagram (stereoscopic diagram) of an endless cloth belt according to an embodiment of the present invention;

[0031] Figure 6 is a structural schematic diagram (stereoscopic diagram) of a unit layer according to an embodiment of the present invention;

[0032] Figure 7 It is a schematic diagram (stereoscopic diagram) of laying the endless cloth belt according to the embodiment of the present invention.

[0033] Among them: 1. weaving mold; 2. two-dimensional fiber cloth; 3. annular cloth belt; 4. mesh tire; 5. two-dimensional warp yarn; 6. two-dimensional weft yarn; 7. annular warp yarn; 8. annular weft yarn. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solution of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1 As shown, this embodiment provides a method for preparing a high-density needle-punched rotating body, wherein the rotating body is formed by stacking a plurality of unit layers, wherein the unit layer is formed by stacking a two-dimensional fiber cloth 2, an annular cloth belt 3 and a mesh tire 4; the preparation process comprises the following steps:

[0036] S1. Setting the thickness of the unit layer, and calculating the number of layers of the two-dimensional fiber cloth 2 and the number of layers of the annular cloth belt 3 in each unit layer according to the ratio of the parent direction bearing capacity to the annular direction bearing capacity required for the high-density needle-punched rotating body to be prepared and the thickness of the unit layer;

[0037] S2, according to the density of the high-density needle-punched rotating body to be prepared, the surface density of the web 4 and the set unit layer thickness, the surface density of the two-dimensional fiber cloth 2 and the annular cloth belt 3 are calculated, and the two-dimensional fiber cloth 2 and the annular cloth belt 3 are woven respectively;

[0038] S3, preparing a unit layer on the outer surface of the weaving mold 1, the preparation process of the unit layer is: evenly laying the two-dimensional fiber cloth 2 along the mother direction, winding the annular cloth tape 3 along the circumferential direction, and laying the two-dimensional fiber cloth 2 and the annular cloth tape 3 according to the calculation result of step S1; after laying, laying a layer of mesh 4 on the outer surface of the outermost fabric, and needle-punching the two-dimensional fiber cloth 2, the annular cloth tape 3 and the mesh 4 along the thickness direction of the fabric to obtain the unit layer;

[0039] S4, repeat S3 multiple times until the stacking thickness of the unit layers reaches the thickness of the high-density needle-punched rotating body to be prepared, thereby obtaining a high-density needle-punched rotating body.

[0040] 1. The present invention sequentially covers the surface of the needle punching mold with multiple layers of two-dimensional fiber cloth and annular cloth tape, and then covers the mesh tire and needle punches to form a tightly connected unit layer, which is stacked to obtain a high-density needle punching rotary body. The annular cloth tape interweaves multiple warp yarns and weft yarns and then wraps them around the fabric surface in an integrated structure, which improves the controllability of the yarn and eliminates the slippage phenomenon caused by the winding of the fiber bundles. The fabric can be pressed by controlling the tension to compress the thickness of the unit layer, thereby directly increasing the density of the high-density needle punching rotary body, facilitating the operation and improving the preparation efficiency. The present invention is also provided with an auxiliary tooling that is consistent with the shape of the needle punching model, and the annular cloth tape is pre-arranged according to the change in the mold diameter in the winding area of ​​the annular cloth tape, so that the annular cloth tape is completely attached to the fabric surface.

[0041] 2. In the present invention, the two-dimensional fiber cloth and the annular cloth belt are both designed with thick warp yarns and thin weft yarns to reduce the bending degree of the warp yarns. After the two-dimensional fiber cloth is laid along the mother direction of the high-density needle-punched rotor and the annular cloth belt is laid along the circumferential direction of the high-density needle-punched rotor, the proportion of effective load-bearing fibers in the high-density needle-punched rotor can be increased, thereby improving the mother direction and circumferential direction load-bearing capacity of the high-density needle-punched rotor.

[0042] In this embodiment, in S1, the step of calculating the number of layers of the two-dimensional fiber cloth 2 and the annular fabric tape 3 in the unit layer includes: calculating the ratio of the number of layers of the two-dimensional fiber cloth 2 and the annular fabric tape 3 to satisfy the following formula: n 布 / n 带 =bF 母 / aF 环 , where n 布 is the number of layers of the two-dimensional fiber cloth 2, n 带 is the number of layers of the annular fabric belt 3, a is the mass proportion of the two-dimensional warp yarn 5 in the two-dimensional fiber cloth 2, b is the mass proportion of the annular weft yarn 8 in the annular fabric belt 3, F 母 F is the parent direction bearing capacity required for the high-density needle-punched rotating body to be prepared, 环 is the hoop bearing capacity required for the high-density needle-punched rotating body to be prepared; according to the thickness of the unit layer and the ratio of the number of layers of the two-dimensional fiber cloth 2 to the annular cloth belt 3, the number of layers of the two-dimensional fiber cloth 2 and the annular cloth belt 3 is calculated.

[0043] In this embodiment, S21, according to the density of the high-density needle-punched rotating body to be prepared, the surface density of the web 4 and the set unit layer thickness, the surface density of the two-dimensional fiber cloth 2 and the annular cloth belt 3 is calculated;

[0044] S22, setting the material density of the warp and weft yarns and the fineness ratio of the warp and weft yarns in the two-dimensional fiber cloth 2 and the annular cloth belt 3, wherein the material density of the warp and weft yarns is set to be the same, and the fineness ratio of the warp and weft yarns is set to be (5-10):1;

[0045] S23, based on the surface density of the two-dimensional fiber cloth 2, weaving the two-dimensional fiber cloth 2 according to the material density of the warp and weft yarns and the fineness ratio of the warp and weft yarns;

[0046] S24. Prepare an auxiliary tooling with the same shape as the weaving mold 1. Based on the surface density of the annular fabric tape 3, the density of the warp and weft yarns and the fineness ratio of the warp and weft yarns, weave the annular fabric tape 3 on the surface of the auxiliary tooling along a spiral line that coincides with the axis of the auxiliary tooling. The pitch of the spiral line is consistent with the width of the annular fabric tape 3 to obtain the annular fabric tape 3; and reserve yarn ends at both ends of the annular fabric tape 3.

[0047] In the present invention, since the auxiliary tooling is consistent in shape with the weaving mold 1, there is no need to make excessive adjustments to the shape of the annular cloth tape 3 when winding the annular cloth tape 3 arranged on the outer surface of the auxiliary tooling onto the outer surface of the weaving mold 1. Compared with the operation of winding an ordinary cloth tape while adjusting it, the density of the rotating body after winding in the present invention is more controllable and the preparation efficiency is improved.

[0048] In this embodiment, in S21, the surface density of the two-dimensional fiber cloth 2 and the annular cloth belt 3 satisfies the following formula: M 布 =(ρh-M 网 -bM 带 ) / a,M 带 =(ρh-M 网 -aM 布 ) / b, where ρ is the density of the high-density needle-punched rotating body, h is the set thickness of the unit layer, M 网 is the surface density of the mesh, M 布 is the surface density of the two-dimensional fiber cloth 2, M 带 is the surface density of the endless fabric belt 3, a is the number of layers of the two-dimensional fiber cloth 2, and b is the number of layers of the endless fabric belt 3.

[0049] In this embodiment, the two-dimensional fiber cloth 2 and the annular cloth belt 3 are both of a plain weave, a twill weave, or a satin weave structure.

[0050] In this embodiment, the width of the annular cloth belt 3 is 10-20 mm, and the thickness of the unit layer is 1 mm.

[0051] In this embodiment, the thickness of the high-density needle-punched rotating body to be prepared is 30-40 mm, the radius of the weaving mold 1 is 40-60 cm, and the height is 90-120 cm.

[0052] In this embodiment, in S2, when the two-dimensional fiber cloth 2, the annular cloth tape 3 and the mesh 4 are needle-punched along the thickness direction, the yarn ends reserved at both sides of the annular cloth tape 3 are inserted into the thickness direction, which can further fix the existing fabric and further improve the density of the prepared rotating body; in S33, the length of the yarn ends reserved at both sides of the annular cloth tape 3 is 10-15mm.

[0053] In this embodiment, a tension device is installed at the head of the auxiliary tooling. When the annular cloth belt 3 is wound by the auxiliary tooling, the tension device is used to control the winding tension of the annular cloth belt 3 to compress the cloth layer in the unit layer.

[0054] In this embodiment, the raw materials of the two-dimensional fiber cloth 2, the annular cloth belt 3 and the web 4 are all one of glass fiber, high silica fiber, quartz fiber and carbon fiber.

[0055] The present invention also provides an embodiment, using quartz fiber to prepare a conical rotating body needle-punched fabric, the rotating body needle-punched fabric is composed of multiple layers of units prepared by two-dimensional fiber cloth, annular cloth belt and mesh tire, wherein the rotating body needle-punched fabric has a thickness of 20mm, a height of 500mm, and a density requirement of 1.0±0.05g / cm 3 , the performance requirements of the rotary needle-punched fabric in the mother direction and the hoop direction are consistent;

[0056] The preparation method of the rotary needle-punched fabric comprises the following steps:

[0057] S1, setting the thickness of the unit layer, and calculating the number of layers of the two-dimensional fiber cloth 2 and the number of layers of the annular cloth belt 3 in each unit layer according to the ratio of the parent direction bearing capacity to the annular direction bearing capacity required for the high-density needle-punched rotating body to be prepared and the thickness of the unit layer;

[0058] The step of calculating the number of layers of the two-dimensional fiber cloth 2 and the annular fabric belt 3 in the unit layer includes: calculating the ratio of the number of layers of the two-dimensional fiber cloth 2 and the annular fabric belt 3 to satisfy the following formula: n 布 / n 带 =bF 母 / aF 环 , where n 布 is the number of layers of the two-dimensional fiber cloth 2, n 带 is the number of layers of the annular fabric belt 3, a is the mass proportion of the two-dimensional warp yarn 5 in the two-dimensional fiber cloth 2, b is the mass proportion of the annular weft yarn 8 in the annular fabric belt 3, F 母 F is the parent direction bearing capacity required for the high-density needle-punched rotating body to be prepared, 环 is the hoop bearing capacity required for the high-density needle-punched rotating body to be prepared; the number of layers of the two-dimensional fiber cloth 2 and the annular cloth belt 3 is calculated according to the thickness of the unit layer and the ratio of the number of layers of the two-dimensional fiber cloth 2 to the annular cloth belt 3;

[0059] Among them, the mother direction and hoop direction performance requirements of the rotating body needle-punched fabric are consistent, the fineness of the two-dimensional warp yarn 5 in the two-dimensional fiber cloth 2 is 255±10tex, and the fineness of the annular weft yarn 8 in the annular cloth belt 3 is 255±10tex, so the ratio of the number of layers of the two-dimensional fiber cloth 2 and the annular cloth belt 3 is 1:1. According to the unit layer thickness of 1.0±0.1mm, the number of layers of the two-dimensional fiber cloth 2 and the annular cloth belt 3 are both 2 layers;

[0060] S2, according to the density of the high-density needle-punched rotating body to be prepared, the surface density of the web 4 and the set unit layer thickness, the surface density of the two-dimensional fiber cloth 2 and the annular cloth belt 3 are calculated, and the two-dimensional fiber cloth 2 and the annular cloth belt 3 are woven respectively;

[0061] S21, according to the density of the high-density needle-punched rotating body to be prepared, the surface density of the web 4 and the set unit layer thickness, the surface density of the two-dimensional fiber cloth 2 and the annular cloth belt 3 is calculated; the surface density of the two-dimensional fiber cloth 2 and the annular cloth belt 3 satisfies the following formula: M 布 =(ρh-M 网 -bM 带 ) / a,M 带 =(ρh-M 网 -aM 布 ) / b, where ρ is the density of the high-density needle-punched rotating body, h is the set thickness of the unit layer, M 网 is the surface density of the mesh, M 布 is the surface density of the two-dimensional fiber cloth 2, M 带 is the surface density of the endless fabric 3, a is the number of layers of the two-dimensional fiber cloth 2, and b is the number of layers of the endless fabric 3; specifically, the rotating body needle-punched fabric is 1.0±0.05g / cm 3 , the unit layer thickness is 1.0±0.1mm, the surface density of the mesh is 75±5g / m 2 , because the mother direction and hoop direction performance requirements of the rotating body needle-punched fabric are consistent, the number of layers of the two-dimensional fiber cloth and the annular cloth tape in each unit layer is 2, and the surface density of the two-dimensional fiber cloth and the annular cloth tape is calculated to be 235±10g / m2;

[0062] S22, setting the material density of the warp and weft yarns and the fineness ratio of the warp and weft yarns in the two-dimensional fiber cloth 2 and the annular cloth belt 3, wherein the material density of the warp and weft yarns is consistent, and the fineness ratio of the warp and weft yarns is (5-10):1; Figure 4 , Figure 5 , Figure 6 As shown, under the premise that the density of warp and weft yarns is 8 yarns / cm and the ratio of warp and weft yarn fineness is (5-10):1, the fineness of the two-dimensional warp yarn 5 in the two-dimensional fiber cloth 2 and the annular warp yarn 7 of the annular fabric tape 3 is calculated to be 255±10tex, and the fineness of the two-dimensional weft yarn 6 of the two-dimensional fiber cloth 2 and the annular weft yarn 8 of the annular fabric tape 3 is 35±10tex;

[0063] S23, based on the surface density of the two-dimensional fiber cloth 2, the density of the warp and weft yarns and the fineness ratio of the warp and weft yarns, the two-dimensional fiber cloth 2 is obtained by weaving; since the rotating body needle-punched fabric of this embodiment is conical, the two-dimensional fiber cloth and the annular cloth belt are both prepared with a plain weave structure;

[0064] S24, prepare an auxiliary tooling with the same shape as the weaving mold 1, and based on the surface density of the annular tape 3, the density of the warp and weft yarns and the fineness ratio of the warp and weft yarns, weave the annular tape 3 along the spiral line whose axis coincides with the axis of the auxiliary tooling on the surface of the auxiliary tooling, and the pitch of the spiral line is consistent with the width of the annular tape 3 to obtain the annular tape 3; and reserve yarn ends at both ends of the annular tape 3; the weaving parameters of the rotating body needle-punched fabric, the two-dimensional fiber cloth, the annular tape and the mesh tire are shown in Table 1:

[0065] Table 1 Weaving parameters

[0066]

[0067] S3, preparing a unit layer on the outer surface of the braiding mold 1, the preparation process of the unit layer is as follows: Figure 2 , Figure 7 As shown, the two-dimensional fiber cloth 2 is evenly laid along the mother direction, and the annular cloth tape 3 is wound along the hoop direction. The two-dimensional fiber cloth 2 and the annular cloth tape 3 are laid according to the calculation result of step S1; after laying, a layer of mesh tire 4 is laid on the outer surface of the outermost fabric, and the two-dimensional fiber cloth 2, the annular cloth tape 3 and the mesh tire 4 are needle-punched along the thickness direction of the fabric to obtain a unit layer; wherein, the two-dimensional warp yarn 5 in the two-dimensional fiber cloth 2 laid in the mother direction provides the mother direction bearing capacity, and the annular weft yarn 8 in the annular cloth tape 3 provides the hoop direction bearing capacity; and the annular cloth tape 3 squeezes the fabric during the winding process and the mesh tire 4 squeezes the fabric during the covering process, so that the density of the needle-punched rotating body is further improved;

[0068] S4, repeat S3 for many times until the stacking thickness of the unit layers reaches the thickness of the high-density needle-punched rotating body to be prepared, and obtain Figure 3 The high-density needling rotor shown.

[0069] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A method for preparing a high-density acupuncture rotating body, characterized in that: The rotating body is formed by stacking a plurality of unit layers, wherein the unit layers are formed by stacking a two-dimensional fiber cloth (2), an annular cloth belt (3) and a web (4); the preparation process comprises the following steps: S1, setting the thickness of the unit layer, and calculating the number of layers of the two-dimensional fiber cloth (2) and the number of layers of the annular cloth belt (3) in each unit layer according to the ratio of the parent direction bearing capacity to the annular direction bearing capacity required for the high-density needle-punched rotating body to be prepared and the thickness of the unit layer; S2, calculating the surface density of the two-dimensional fiber cloth (2) and the annular cloth belt (3) according to the density of the high-density needle-punched rotating body to be prepared, the surface density of the web (4) and the set unit layer thickness, and weaving the two-dimensional fiber cloth (2) and the annular cloth belt (3) respectively; S3, preparing a unit layer on the outer surface of the weaving mold (1), the preparation process of the unit layer is as follows: evenly laying the two-dimensional fiber cloth (2) along the mother direction, winding the annular cloth belt (3) along the annular direction, laying the two-dimensional fiber cloth (2) and the annular cloth belt (3) according to the calculation result of step S1; after laying, laying a layer of mesh (4) on the outer surface of the outermost fabric, and needle-punching the two-dimensional fiber cloth (2), the annular cloth belt (3) and the mesh (4) along the thickness direction of the fabric to obtain the unit layer; S4, repeat S3 multiple times until the stacking thickness of the unit layers reaches the thickness of the high-density needle-punched rotating body to be prepared, thereby obtaining a high-density needle-punched rotating body.

2. The method for preparing a high-density acupuncture rotating body according to claim 1, characterized in that: In S1, the step of calculating the number of layers of the two-dimensional fiber cloth (2) and the annular cloth belt (3) in the unit layer includes: calculating the ratio of the number of layers of the two-dimensional fiber cloth (2) and the annular cloth belt (3) to satisfy the following formula: n 布 / n 带 =bF 母 / aF 环 , where n 布 is the number of layers of the two-dimensional fiber cloth (2), n 带 is the number of layers of the annular fabric belt (3), a is the mass ratio of the two-dimensional warp yarn (5) in the two-dimensional fiber cloth (2), b is the mass ratio of the annular weft yarn (8) in the annular fabric belt (3), and F 母 F is the parent direction bearing capacity required for the high-density needle-punched rotating body to be prepared, 环 The annular bearing capacity required for the high-density needle-punched rotating body to be prepared is calculated based on the thickness of the unit layer and the ratio of the number of layers of the two-dimensional fiber cloth (2) to the annular cloth belt (3).

3. The method for preparing a high-density acupuncture rotating body according to claim 2, characterized in that: S21, calculating and obtaining the surface density of the two-dimensional fiber cloth (2) and the annular cloth belt (3) according to the density of the high-density needle-punched rotating body to be prepared, the surface density of the web (4) and the set unit layer thickness; S22, setting the material density of the warp and weft yarns and the ratio of the warp and weft yarn fineness in the two-dimensional fiber cloth (2) and the annular cloth belt (3), wherein the material density of the warp and weft yarns is consistent, and the ratio of the warp and weft yarn fineness is (5-10):1; S23, based on the surface density of the two-dimensional fiber cloth (2), the material density of the warp and weft yarns and the fineness ratio of the warp and weft yarns, weaving to obtain the two-dimensional fiber cloth (2); S24. Prepare an auxiliary tooling with the same shape as the weaving mold (1); based on the surface density of the annular fabric tape (3), the density of the warp and weft yarns and the ratio of the warp and weft yarn fineness, weave a spiral line on the surface of the auxiliary tooling along the axis that coincides with the axis of the auxiliary tooling to obtain the annular fabric tape (3); the pitch of the spiral line is consistent with the width of the annular fabric tape (3), and reserve yarn ends at both ends of the annular fabric tape (3).

4. The method for preparing a high-density acupuncture rotating body according to claim 3, characterized in that: In S21, the surface density of the two-dimensional fiber cloth (2) and the annular cloth belt (3) satisfies the following formula: M 布 =(ρh-M 网 -bM 带 ) / a,M 带 =(ρh-M 网 -aM 布 ) / b, where ρ is the density of the high-density needle-punched rotating body, h is the set thickness of the unit layer, M 网 is the surface density of the web (4), M 布 is the surface density of the two-dimensional fiber cloth (2), M 带 is the surface density of the annular cloth belt (3), a is the number of layers of the two-dimensional fiber cloth (2), and b is the number of layers of the annular cloth belt (3).

5. The method for preparing a high-density acupuncture rotating body according to claim 4, characterized in that: The two-dimensional fiber cloth (2) and the annular cloth belt (3) are both of a plain weave, a twill weave, or a satin weave structure.

6. The method for preparing a high-density acupuncture rotating body according to claim 5, characterized in that: The width of the annular cloth belt (3) is 10-20 mm, and the thickness of the unit layer is 1 mm.

7. The method for preparing a high-density acupuncture rotating body according to claim 6, characterized in that: The thickness of the high-density needle-punched rotating body to be prepared is 30-40 mm, the radius of the weaving mold (1) is 40-60 cm, and the height is 90-120 cm.

8. The method for preparing a high-density acupuncture rotating body according to claim 7, characterized in that: In S3, when the two-dimensional fiber cloth (2), the annular cloth belt (3) and the web tire (4) are needled in the thickness direction, the yarn ends reserved at both ends of the annular cloth belt (3) are inserted into the thickness direction; in S24, the length of the yarn ends reserved at both ends of the annular cloth belt (3) is 10-15 mm.

9. The method for preparing a high-density acupuncture rotating body according to claim 8, characterized in that: A tension device is installed at the head of the auxiliary tooling. When the annular cloth belt (3) is wound by the auxiliary tooling, the tension device is used to control the winding tension of the annular cloth belt (3) to compress the cloth layer in the unit layer.

10. The method for preparing a high-density acupuncture rotating body according to claim 9, characterized in that: The raw materials of the two-dimensional fiber cloth (2), the annular cloth belt (3) and the web tire (4) are all one of glass fiber, high silica fiber, quartz fiber and carbon fiber.

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