CN115110214B - Hollow needle structure - Google Patents
Hollow needle structure Download PDFInfo
- Publication number
- CN115110214B CN115110214B CN202210880968.2A CN202210880968A CN115110214B CN 115110214 B CN115110214 B CN 115110214B CN 202210880968 A CN202210880968 A CN 202210880968A CN 115110214 B CN115110214 B CN 115110214B
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- CN
- China
- Prior art keywords
- needle
- hollow
- needle tube
- tube
- eye
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000000463 material Substances 0.000 claims abstract description 37
- 239000007787 solid Substances 0.000 claims abstract description 22
- 239000004744 fabric Substances 0.000 claims description 19
- 239000003365 glass fiber Substances 0.000 claims description 18
- 239000002131 composite material Substances 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 239000000805 composite resin Substances 0.000 abstract description 3
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 16
- 239000004917 carbon fiber Substances 0.000 description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 239000000047 product Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000011165 3D composite Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B85/00—Needles
- D05B85/10—Hollow needles
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B85/00—Needles
- D05B85/02—Needles with slotted eyes, i.e. with a slit leading to the eye for thread insertion
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a hollow needle structure, which comprises a solid needle, wherein the solid needle comprises a needle point and a needle tail rod which are integrally arranged, and the needle point is used for driving a hollow needle and yarns to penetrate through a material to be processed; the hollow needle tube comprises a needle tube body, a needle tube cavity is formed in the needle tube body, and the needle head tail rod is inserted into and assembled in the needle tube cavity; one or two needle eyes are arranged on the needle tube body, and the needle eyes are communicated with the needle tube cavity; the end part of the yarn sequentially passes through the needle tube cavity and the needle eye and then passes out. The yarn needs to pass through the hollow tube of the hollow needle and pass out from the end hole, double yarns are formed inside and outside the hollow needle, and the hollow needle is utilized to process the flexible material, so that a plurality of material properties with excellent performance can be obtained, and the method has great significance, and particularly, the thermoplastic resin composite material is processed.
Description
Technical Field
The invention relates to the technical field of fiber preform processing, in particular to a hollow needle structure.
Background
With the increasing popularity and wide application of fiber composite materials, the processing of fibrous semi-finished products is also becoming more frequent. Conventionally, the technique of stitching fiber yarns through a fibrous product or flexible material using steel needles has been used for many years, but when the material is thick and dense, stitching is difficult, and is inefficient, and broken. The market of industrial hollow needles is left blank. In the prior art, hollow needles are used for embroidery and medical stitching, but the application of the hollow needles in industry is blank, on one hand, industrial products have high hardness and density, on the other hand, high-speed stitching is mostly used in industry, the wear resistance of the hollow needles is extremely challenged, and the material of the hollow needles is very important.
Indeed, many industrial products are flexible or semi-flexible when semi-manufactured, requiring reinforcement processing. With the rapid progress and development of new material manufacturing industry, some high-performance products have certain flexibility in semi-product state, such as composite materials, and the manufactured fiber preform or prepreg is easy to be subjected to needling and other processing. In order to improve the variety adaptability and flexibility of some industrial product processing, it is necessary to develop a multipurpose hollow needle with multiple functions.
Disclosure of Invention
The invention aims to provide a hollow puncture needle structure which solves the problems in the prior art and can prepare a composite material with excellent performance and a product thereof by processing a flexible material through a hollow needle.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a hollow needle structure, which comprises
The solid needle comprises a needle point and a needle tail rod which are integrally arranged, and the needle point is used for driving the hollow needle and the yarns to penetrate through the material to be processed;
The hollow needle tube comprises a needle tube body, a needle tube cavity is formed in the needle tube body, and the needle head tail rod is inserted into and assembled in the needle tube cavity; one or two needle eyes are arranged on the needle tube body, and the needle eyes are communicated with the needle tube cavity; the end part of the yarn sequentially passes through the needle tube cavity and the needle eye and then passes out.
In one embodiment, the needle tube body is provided with two needle eyes, the two needle eyes are a first needle eye and a second needle eye respectively, and the first needle eye and the second needle eye are symmetrically distributed along the axial direction of the needle tube body.
In one embodiment, the yarns comprise a first yarn and a second yarn, the first yarn is threaded from the first eye after being threaded from the end of the needle cannula cavity, and the second yarn is threaded from the second eye after being threaded from the end of the needle cannula cavity.
In one embodiment, the solid needle and the hollow needle cannula are both made of a hard material.
In one embodiment, the solid needle is made of a hard material and the hollow needle cannula is made of a deformable material.
In one embodiment, the outer diameter of the hollow needle tube is 0.2mm-8mm, and the inner diameter of the hollow needle tube is 0.1mm-6mm.
In one embodiment, the maximum outer diameter of the needle tip is greater than or equal to the outer diameter of the hollow needle cannula.
In one embodiment, the edges of the first and second needle eyes are rounded.
Compared with the prior art, the invention has the following beneficial technical effects:
The hollow needle structure comprises a solid needle head and a hollow needle tube, wherein the needle tip of the solid needle head is used for driving the hollow needle and yarns to penetrate through a material to be processed; a needle tube cavity is formed in the needle tube body of the hollow needle tube, and a needle head tail rod is inserted into and assembled in the needle tube cavity; the needle tube body is provided with a first needle eye and a second needle eye which are communicated with the cavity of the needle tube; the end part of the yarn sequentially passes through the first needle hole, the needle tube cavity and the second needle hole and then passes out. The yarn needs to pass through the hollow tube of the hollow needle and pass out from the end hole, double yarns are formed inside and outside the hollow needle, and the hollow needle is utilized to process the flexible material, so that a plurality of material properties with excellent performance can be obtained, and the method has great significance, and particularly, the thermoplastic resin composite material is processed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of a hollow spike in an embodiment of the invention;
FIG. 2 is a disassembled view of the hollow spike of the embodiment of the invention;
FIG. 3 is a diagram showing the connection of hollow needles to yarns in an embodiment of the present invention;
Wherein, 200-yarn, 400-hollow needle tube, 500-needle eye, 600-solid needle, 700-needle tail rod, 800-needle tube cavity and 900-needle tip.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a hollow puncture needle structure which solves the problems in the prior art and can prepare a composite material with excellent performance and a product thereof by processing a flexible material through a hollow needle.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
1-3, The present invention provides a hollow needle structure, comprising a solid needle 600, wherein the solid needle 600 comprises a needle tip 900 and a needle tail 700 which are integrally arranged, and the needle tip 900 is used for driving the hollow needle and the yarn 200 to penetrate into a material to be processed; the hollow needle tube 400, the hollow needle tube 400 includes the needle tube body, there is needle tube cavity 800 in the needle tube body, the needle head tail 700 inserts and assembles in the needle tube cavity 800; the needle tube body is provided with a first needle eye and a second needle eye which are respectively positioned at two sides of the needle tube cavity 800 and communicated with the needle tube cavity 800; the ends of yarn 200 pass through the first eye, needle lumen 800, and second eye in sequence and then out.
In one embodiment, the needle tube body is symmetrically provided with a first needle eye and a second needle eye along the axial direction of the needle tube body. The double needle holes are relatively distributed and can be used for threading double yarns, and the yarns 200 are threaded through the hollow needles and out of the needle holes of the end heads. Yarn 200 is threaded through the hollow tube of the hollow spike and out the end hole, forming a double yarn inside and outside the hollow spike, inserting or threading yarn 200 through the flexible material with the hollow spike, and then withdrawing the hollow spike so that the yarn remains in or through the flexible material. The local strength of the composite material may be enhanced by stitching or needling the multi-layer fabric or fabric lap or the multi-layer prepreg or prepreg lap with the hollow stabs threaded with yarns 200.
In one embodiment, both the solid needle 600 and the hollow needle 400 are made of a hard material, and the hollow needle is a rigid needle; rigid needling performs straight line penetration of the flexible material.
In yet another embodiment, the solid needle 600 is made of a hard material and the hollow needle tube 400 is made of a deformable material, in which case the hollow spike is a flexible spike; flexible needling can perform curvilinear piercing of flexible materials. The front and back needling treatment can be carried out on the thick flexible material so as to achieve the effect or purpose of rapid enhancement, the front and back needling treatment can also be carried out on the flexible material with a complex shape, and the curve needling can also be carried out to obtain the flexible material preform with a three-dimensional structure.
In one embodiment, the outer diameter of the hollow needle cannula is 0.2mm-8mm and the inner diameter of the hollow needle cannula is 0.1mm-6mm.
In one embodiment, the maximum outer diameter of the needle tip is greater than or equal to the outer diameter of the hollow needle cannula.
In one embodiment, the edges of the first and second eyelets are rounded.
Example 1
The hollow needle is made of stainless steel, the outer diameters of the solid needle 600 and the hollow needle tube 400 are the same, and the outer diameter of the needle tail 700 is the same as the inner diameter of the hollow needle tube 400. The needle tail 700 is inserted into the end of the hollow tube, an eye 500 or a needle hole is distributed on the hollow needle tube 400 at the position away from the top end of the tail, the glass fiber yarn passes through the hollow needle tube 400 and passes out of the eye 500 or the needle hole, and the multi-layer glass fiber cloth is sewed or needled, so that the glass fiber cloth layers are connected into a whole, and the whole effect of no layering is achieved.
Example two
The hollow needle is made of stainless steel, the outer diameters of the solid needle 600 and the hollow needle tube 400 are the same, and the outer diameter of the needle tail 700 is the same as the inner diameter of the hollow needle tube 400. The tail rod of the needle head part is inserted into the end of the hollow tube, an eye 500 or a needle hole is distributed on the hollow needle tube 400 at the position away from the top end of the tail rod, carbon fiber yarns pass through the hollow needle tube 400 and pass out of the eye 500 or the needle hole, and multi-layer carbon fiber cloth is sewn or needled, so that the carbon fiber cloth layers are connected into a whole, and the whole effect of no layering is achieved.
Example III
The hollow needle is made of stainless steel, the outer diameters of the solid needle 600 and the hollow needle tube 400 are the same, and the outer diameter of the needle tail 700 is the same as the inner diameter of the hollow needle tube 400. The tail rod of the needle head part is inserted into the end of the hollow tube, two opposite needle holes or pinholes are distributed on the hollow needle tube 400 at the position away from the top end of the tail rod, two glass fiber yarns simultaneously pass through the hollow needle tube 400 and respectively pass through the opposite needle holes 500 or pinholes, and the multi-layer glass fiber cloth is sewn or needled, so that the glass fiber cloth layers are connected into a whole, and the integral effect of no layering is achieved.
Example IV
The hollow needle is made of stainless steel, the outer diameters of the solid needle 600 and the hollow needle tube 400 are the same, and the outer diameter of the needle tail 700 is the same as the inner diameter of the hollow needle tube 400. The tail rod of the needle head part is inserted into the end of the hollow tube, two opposite needle holes 500 or needle holes are distributed on the hollow needle tube at the position which is away from the top end of the tail rod, two carbon fiber yarns simultaneously pass through the hollow needle tube 400 and respectively pass out of the opposite needle holes 500 or needle holes, and the multi-layer carbon fiber fabrics or carbon fiber felts are subjected to stitching or needling treatment, so that the carbon fiber fabrics or the carbon fiber felts are connected into a whole body, and the whole body effect of no layering is achieved.
Example five
The hollow needle tube 400 of thermosetting resin is prepared by using a glass fiber pultrusion process, and the solid needle 600 is prepared by using stainless steel. The outer diameters of solid needle 600 and hollow needle 400 are the same, and the outer diameter of needle tail 700 is the same as the inner diameter of hollow needle 400. The tail rod of the needle head part is inserted into the end of the hollow tube, an eye 500 or a needle hole is distributed on the hollow needle tube at the position away from the top end of the tail rod, glass fiber yarns penetrate through the hollow needle tube 400 and penetrate out of the eye 500 or the needle hole, epoxy resin injection is carried out on a plurality of hollow tubes penetrated with the glass fiber yarns, so that the glass fiber yarns in the needle tube are soaked with resin, then the resin is heated, the glass fiber yarns in the needle tube and the resin are solidified, the solidified composite material needle tube and the stainless steel needle head are utilized together, the multi-layer glass fiber cloth is integrally punctured, then the stainless steel needle heads are respectively pulled out, the composite material needle tube is reserved in the multi-layer glass fiber cloth, and secondary heating solidification is carried out when the multi-layer cloth composite material is prepared, so that the three-dimensional composite material with high thickness is prepared.
Example six
The thermosetting resin hollow needle tube 400 is prepared by a carbon fiber pultrusion process, and the solid needle 600 is prepared by stainless steel. The outer diameters of solid needle 600 and hollow needle 400 are the same, and the outer diameter of needle tail 700 is the same as the inner diameter of hollow needle 400. The tail rod of the needle head part is inserted into the end of the hollow tube, two needle holes 500 or needle holes are relatively distributed on the hollow needle tube 400 at the position away from the top end of the tail rod, carbon fiber yarns penetrate through the hollow needle tube 400 and penetrate out of the needle holes 500 or needle holes, epoxy resin injection is carried out on a plurality of hollow tubes penetrated with the carbon fiber yarns, the carbon fiber yarns in the needle tube are soaked in resin, then heating is carried out, the carbon fiber yarns in the needle tube and the resin are solidified, the solidified composite material needle tube and the stainless steel needle head are utilized together, the multi-layer carbon fiber cloth is integrally punctured, then the stainless steel needle heads are respectively pulled out, the composite material needle tube is reserved in the multi-layer carbon fiber cloth, and secondary heating solidification is carried out when the multi-layer cloth composite material is prepared, so that the three-dimensional carbon fiber composite material with high thickness is prepared.
According to the hollow needle structure, as the yarn 200 formed by some special fibers has certain temperature resistance and a plurality of new materials have certain flexibility or deformability after being heated, the hollow needle structure is processed at a certain temperature, namely, the hollow needle structure is used for processing the flexible materials, so that a plurality of material properties with excellent performances can be obtained, and the hollow needle structure has great significance, and particularly, the hollow needle structure is used for processing thermoplastic resin composite materials.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (4)
1. A hollow spike characterized by: comprising
The solid needle comprises a needle point and a needle tail rod which are integrally arranged, and the needle point is used for driving the hollow needle and the yarns to penetrate through the material to be processed;
The hollow needle tube comprises a needle tube body, a needle tube cavity is formed in the needle tube body, and the needle head tail rod is inserted into and assembled in the needle tube cavity; one or two needle eyes are arranged on the needle tube body, and the needle eyes are communicated with the needle tube cavity; the end part of the yarn sequentially passes through the needle tube cavity and the needle eye and then passes out; injecting epoxy resin into the hollow needle tube penetrated with the glass fiber yarns to impregnate the glass fiber yarns in the hollow needle tube with the resin, and then heating to solidify the glass fiber yarns and the resin in the hollow needle tube; the solidified composite needle tube and the stainless steel needle are utilized to carry out integral puncture on the multi-layer glass fiber cloth, then the stainless steel needle is respectively pulled out, the composite needle tube is left in the multi-layer glass fiber cloth, and secondary heating and solidification are carried out when the multi-layer cloth composite material is prepared;
The solid needle is made of hard materials, and the hollow needle tube is made of deformable materials; two needle eyes are formed in the needle tube body, the two needle eyes are a first needle eye and a second needle eye respectively, and the first needle eye and the second needle eye are symmetrically distributed along the axial direction of the needle tube body; the yarn comprises a first yarn and a second yarn, wherein the first yarn penetrates from the end part of the needle tube cavity and then penetrates from the first needle hole, and the second yarn penetrates from the end part of the needle tube cavity and then penetrates from the second needle hole.
2. The hollow spike of claim 1 wherein: the outer diameter of the hollow needle tube is 0.2mm-8mm, and the inner diameter of the hollow needle tube is 0.1mm-6mm.
3. The hollow spike of claim 1 wherein: the maximum outer diameter of the needle tip is larger than or equal to the outer diameter of the hollow needle tube.
4. The hollow spike of claim 1 wherein: the edges of the first needle eye and the second needle eye are processed by fillets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210880968.2A CN115110214B (en) | 2022-07-26 | 2022-07-26 | Hollow needle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210880968.2A CN115110214B (en) | 2022-07-26 | 2022-07-26 | Hollow needle structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115110214A CN115110214A (en) | 2022-09-27 |
| CN115110214B true CN115110214B (en) | 2024-04-30 |
Family
ID=83333933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210880968.2A Active CN115110214B (en) | 2022-07-26 | 2022-07-26 | Hollow needle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115110214B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003019380A (en) * | 2001-07-05 | 2003-01-21 | Mariko Chiba | Repair needle for pushing fivers unsewn |
| JP2008018149A (en) * | 2006-07-14 | 2008-01-31 | Teiboo Kk | Sewing needle |
| KR20080090344A (en) * | 2007-04-04 | 2008-10-08 | 정우종 | Needle including a hole havig a changealbe form |
| CN201305750Y (en) * | 2008-10-27 | 2009-09-09 | 郑隆玫 | Double-hole needle |
| CN201686838U (en) * | 2010-05-12 | 2010-12-29 | 潘旭 | Double-hole needle |
| KR102262528B1 (en) * | 2020-02-20 | 2021-06-07 | 정세찬 | Splittable needle for easy knots |
-
2022
- 2022-07-26 CN CN202210880968.2A patent/CN115110214B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003019380A (en) * | 2001-07-05 | 2003-01-21 | Mariko Chiba | Repair needle for pushing fivers unsewn |
| JP2008018149A (en) * | 2006-07-14 | 2008-01-31 | Teiboo Kk | Sewing needle |
| KR20080090344A (en) * | 2007-04-04 | 2008-10-08 | 정우종 | Needle including a hole havig a changealbe form |
| CN201305750Y (en) * | 2008-10-27 | 2009-09-09 | 郑隆玫 | Double-hole needle |
| CN201686838U (en) * | 2010-05-12 | 2010-12-29 | 潘旭 | Double-hole needle |
| KR102262528B1 (en) * | 2020-02-20 | 2021-06-07 | 정세찬 | Splittable needle for easy knots |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115110214A (en) | 2022-09-27 |
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