阅读说明：本技术 一种变隔距经编间隔织物及其制备方法 (Variable-gauge warp-knitted spacer fabric and preparation method thereof ) 是由 马丕波 徐婉丽 蒋高明 缪旭红 丛洪莲 万爱兰 于 2019-10-29 设计创作，主要内容包括：本发明实施例提供一种变隔距经编间隔织物及其制备方法,其中,所述方法包括：采用双针床拉舍尔经编机编织织物面间的隔距为第一隔距的经编间隔织物；利用剖幅技术,从所述经编间隔织物中分割出间隔丝长度为第二隔距的经编间隔织物分片；其中,第二隔距小于或等于第一隔距,所述经编间隔织物分片中包括一个织物面；将所述经编间隔织物分片以所述织物面的中线为对称轴对折,将对应位置的间隔丝以预设长度连接,形成两织物面间的隔距不唯一的经编间隔织物。通过所述方法可制备出两个织物面之间的隔距不唯一的变隔距经编间隔织物,克服了传统技术方案中一件经编间隔织物的两个织物面之间的隔距(间隔丝的长度)唯一的局限性。(The embodiment of the invention provides a variable-gauge warp-knitted spacer fabric and a preparation method thereof, wherein the method comprises the following steps: weaving a warp-knitted spacer fabric with a first gauge of the gauge between the fabric surfaces by adopting a double needle bar Raschel warp knitting machine; cutting warp-knitted spacer fabric slices with spacer filament lengths of a second gauge length from the warp-knitted spacer fabric by using a slitting technology; the second gauge is smaller than or equal to the first gauge, and the warp-knitted spacer fabric comprises a fabric surface; and folding the warp-knitted spacer fabric pieces in half by taking the center line of the fabric surface as a symmetry axis, and connecting the spacer filaments at corresponding positions by a preset length to form the warp-knitted spacer fabric with non-unique space between the two fabric surfaces. The variable-gauge warp-knitted spacer fabric with the non-unique gauge between the two fabric surfaces can be prepared by the method, and the limitation that the gauge (the length of the spacer yarn) between the two fabric surfaces of one warp-knitted spacer fabric is unique in the traditional technical scheme is overcome.)

1. A method for preparing a variable-gauge warp-knitted spacer fabric is characterized by comprising the following steps of:

weaving a warp-knitted spacer fabric with a first gauge between two fabric surfaces by adopting a double-needle bar Raschel warp knitting machine;

cutting warp-knitted spacer fabric slices with spacer filament lengths of a second gauge length from the warp-knitted spacer fabric by using a slitting technology; the second gauge is smaller than or equal to the first gauge, and the warp-knitted spacer fabric comprises a fabric surface;

and folding the warp-knitted spacer fabric pieces in half by taking the center line of the fabric surface as a symmetry axis, and connecting the spacer filaments at corresponding positions by a preset length to form the warp-knitted spacer fabric with non-unique space between the two fabric surfaces.

2. The method of claim 1, further comprising:

adjusting the distance between a front needle bed and a back needle bed of the double-needle-bed Raschel warp knitting machine to enable the distance between the front needle bed and the back needle bed to reach a third distance;

the warp-knitted spacer fabric with the first space between two fabric surfaces knitted by the double needle bar Raschel warp knitting machine comprises:

and knitting the warp knitting spacer fabric with the first space between the fabric surfaces by adopting a double-needle bed Raschel warp knitting machine with the distance between the front needle bed and the back needle bed as the third distance.

3. The method of claim 1, wherein the connecting the spacer wires at the corresponding positions by a preset length comprises:

and connecting the spacing wires at the corresponding positions in a preset length by adopting a mechanical connection mode.

4. A variable gauge warp-knitted spacer fabric comprising two fabric faces, characterised in that the spacing between the two fabric faces is not unique.

Technical Field

The invention relates to the technical field of weaving methods and woven fabrics, in particular to a variable-gauge warp-knitted spacer fabric and a preparation method thereof.

Background

Warp-knitted spacer fabrics are double-sided fabric structures produced on a double-needle bed warp knitting machine having two parallel-arranged needle beds, formed by joining upper and lower fabric faces by spacer yarns. The warp-knitted spacer fabric has excellent performances such as energy absorption, shock absorption and pressure resistance and the like, and is widely applied to the fields of packaging and transportation, clothes, home textiles, vamps, cushions and the like. Meanwhile, the warp-knitted spacer fabric can also form a composite material with high composite performance with a base material, and has wide engineering application due to good integrity and light density of the warp-knitted spacer fabric.

However, the warp-knitted spacer fabric in the prior art has a unique gauge (length of the spacer filament) between two fabric surfaces, which results in a single and unchangeable shape of the warp-knitted spacer fabric, and thus the woven warp-knitted spacer fabric cannot be used in situations with special requirements for the shape of the warp-knitted spacer fabric.

In summary, the prior art lacks a warp-knitted spacer fabric with a non-unique gauge between two fabric faces and a method for making the same.

Disclosure of Invention

The invention provides a variable-gauge warp-knitted spacer fabric and a preparation method thereof, and aims to solve the technical problem that the warp-knitted spacer fabric with non-unique gauge between two fabric surfaces and the preparation method thereof are lacked in the prior art.

In a first aspect, a method for preparing a variable-gauge warp-knitted spacer fabric according to an embodiment of the present invention includes:

weaving a warp-knitted spacer fabric with a first gauge of the gauge between the fabric surfaces by adopting a double needle bar Raschel warp knitting machine;

cutting warp-knitted spacer fabric slices with spacer filament lengths of a second gauge length from the warp-knitted spacer fabric by using a slitting technology; the second gauge is smaller than or equal to the first gauge, and the warp-knitted spacer fabric comprises a fabric surface;

and folding the warp-knitted spacer fabric pieces in half by taking the center line of the fabric surface as a symmetry axis, and connecting the spacer filaments at corresponding positions by a preset length to form the warp-knitted spacer fabric with non-unique space between the two fabric surfaces.

In one embodiment, the method further comprises:

adjusting the distance between a front needle bed and a back needle bed of the double-needle-bed Raschel warp knitting machine to enable the distance between the front needle bed and the back needle bed to reach a third distance;

the warp-knitted spacer fabric with the first space distance between the fabric surfaces knitted by the double needle bed Raschel warp knitting machine comprises:

and knitting the warp knitting spacer fabric with the first space between the fabric surfaces by adopting a double-needle bed Raschel warp knitting machine with the distance between the front needle bed and the back needle bed as the third distance.

In one embodiment, the connecting the spacing wires at the corresponding positions by a preset length includes:

and connecting the spacing wires at the corresponding positions in a preset length by adopting a mechanical connection mode.

In a second aspect, there is provided a variable gauge warp-knitted spacer fabric according to an embodiment of the present invention, comprising two fabric panels, wherein the spacing between the two fabric panels is not unique.

The embodiment of the invention provides a variable-gauge warp-knitted spacer fabric and a preparation method thereof, the variable-gauge warp-knitted spacer fabric with non-unique gauge between two fabric surfaces can be prepared by the method, the limitation that the gauge (the length of a spacer filament) between the two fabric surfaces of one warp-knitted spacer fabric is unique in the traditional technical scheme is overcome, and meanwhile, the embodiment of the invention also provides the variable-gauge warp-knitted spacer fabric which can meet the requirement of special occasions on the appearance of the variable-gauge warp-knitted spacer fabric.

Drawings

The accompanying drawings are provided to illustrate the present invention, and it is to be understood that the following description of the specific embodiments is illustrative of some embodiments of the invention and is not to be construed as limiting the invention. In the drawings:

FIG. 1 is a flow chart of a method for making a variable gauge warp knit spacer fabric according to an embodiment of the present invention;

FIGS. 2-5 are schematic structural views of warp-knitted spacer fabrics corresponding to a specific process of manufacturing a variable gauge warp-knitted spacer fabric using a method provided in an embodiment of the present invention;

FIG. 6 is a flow chart of yet another method for making a variable gauge warp knit spacer fabric according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a variable-gauge warp-knitted spacer fabric according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a method for preparing a variable-pitch warp-knitted spacer fabric, including:

step S102, weaving a warp-knitted spacer fabric with a first space between two fabric surfaces by adopting a double-needle bed Raschel warp knitting machine;

in the embodiment of the invention, a specific value of the first gauge may be set first, and then parameters of the double needle bed raschel knitting machine are set according to the specific value of the set first gauge, so as to knit the warp-knitted spacer fabric with the first gauge between two fabric surfaces.

Referring specifically to fig. 2, the warp-knitted spacer fabric knitted by the double needle bar raschel knitting machine includes two fabric faces, i.e., a first fabric face 21 and a second fabric face 22, respectively, and a first space d is a space between the first fabric face 21 and the second fabric face 22 ₁(ii) a The first fabric surface 21 and the second fabric surface 22 are connected by a spacer filament 23, and optionally, the length of the spacer filament 23 may be the first distance d ₁。

Step S104, dividing warp-knitted spacer fabric fragments with spacer filament length of a second gauge from the warp-knitted spacer fabric by using a slitting technology; the second gauge is smaller than or equal to the first gauge, and the warp-knitted spacer fabric comprises a fabric surface;

in the embodiment of the present invention, after the warp-knitted spacer fabric including the first fabric surface 21, the second fabric surface 22 and the spacer filaments 23 is knitted, the warp-knitted spacer fabric piece with the length of the spacer filaments being the second space is cut from the warp-knitted spacer fabric by the slitting process, wherein the warp-knitted spacer fabric piece includes one fabric surface, as shown in fig. 3, the warp-knitted spacer fabric piece including the first fabric surface 21 and the warp-knitted spacer fabric piece adjacent to the first fabric surface 21 and having the length being the second space d ₂The warp-knitted spacer fabric of spacer filaments of (1) is split.

It is noted that the slitting technique may be implemented using a slitting tool, wherein the slitting tool may be a scissors tool. The sharpness parameters of the blades of the scissors can be set according to the material of the spacing wires, which is not described herein.

And S106, folding the warp-knitted spacer fabric in half by taking the center line of the fabric surface as a symmetry axis, and connecting the spacer filaments at corresponding positions by a preset length to form the warp-knitted spacer fabric with non-unique space between the two fabric surfaces.

In the embodiment of the invention, as shown in fig. 4, the warp-knitted spacer fabric is divided into two pieces, and the middle line L of the fabric surface 21 included in the warp-knitted spacer fabric is taken as a symmetry axis to be folded in half; and after the folding, connecting the spacing wires at the corresponding positions by preset length. Specifically, the preset length is set according to the shape of the variable-pitch warp-knitted spacer fabric which is actually set, and if the shape in fig. 5 is to be formed, the preset length is gradually increased from two sides to the middle, and finally the variable-pitch warp-knitted spacer fabric in the shape of 'two sides low and middle high' is formed. Because the fabric surface 21 is folded in half by taking the central line L as a symmetry axis to form the double-layer warp-knitted spacer fabric, two fabric surfaces formed after folding in half are connected together at the central line L, if the two fabric surfaces are connected together and cannot meet the requirement, the two fabric surfaces can be cut through a cutting tool to remove the connection relation.

Referring to fig. 6, the method according to the embodiment of the present invention further includes, before step S102:

step S101, adjusting the distance between a front needle bed and a back needle bed of the double-needle-bed Raschel warp knitting machine to enable the distance between the front needle bed and the back needle bed to reach a third distance;

the step S102 may specifically include:

and knitting the warp knitting spacer fabric with the first space between the fabric surfaces by adopting a double-needle bed Raschel warp knitting machine with the distance between the front needle bed and the back needle bed as the third distance.

In the embodiment of the invention, when the distance between the front needle bed and the back needle bed of the double-needle-bed Raschel warp knitting machine is the third distance, the space between two fabric surfaces can be knitted by the first space d ₁The warp-knitted spacer fabric of (1). The warp-knitted spacer fabric with the variable gauge is used for laying in the subsequent preparation of the warp-knitted spacer fabric with the variable gauge.

In an embodiment of the present invention, the connecting the spacing wires at the corresponding positions by a preset length includes:

and connecting the spacing wires at the corresponding positions in a preset length by adopting a mechanical connection mode.

In the embodiment of the invention, a mechanical connection method can be adopted to connect the spacing threads at the corresponding positions of the folded warp-knitted spacer fabric slicing piece by a preset length. For example, the preset length is gradually increased from the two folded sides to the middle, and the finally formed variable-gauge warp-knitted spacer fabric is a variable-gauge warp-knitted spacer fabric with a large middle interval and a small edge interval.

The preparation method provided by the embodiment of the invention can be used for preparing the variable-gauge warp-knitted spacer fabric with non-unique gauge between two fabric surfaces, overcomes the limitation that the gauge (the length of the spacer yarn) between the two fabric surfaces of one warp-knitted spacer fabric is unique in the traditional technical scheme, and can be used for preparing the warp-knitted spacer fabric meeting various appearance requirements.

Embodiments of the present invention further provide a variable-gauge warp-knitted spacer fabric, as shown in fig. 7, which includes two fabric surfaces, wherein the spacing between the two fabric surfaces is not unique, such as a first fabric surface 211 and a second fabric surface 212, and the spacing between the first fabric surface 211 and the second fabric surface 212 is not unique. That is, the space between the first fabric surface 211 and the second fabric surface 212 is not only fixed, that is, the length of the spacer yarn 23 at the corresponding position between the first fabric surface 211 and the second fabric surface 212 is not only unique. As shown in the drawing, the length of the spacer filaments gradually increases from the two sides to the middle.

According to the variable-gauge warp-knitted spacer fabric provided by the embodiment of the invention, the gauge between the two fabric surfaces is not unique, so that the formed warp-knitted spacer fabric is not single in appearance, and the variable-gauge warp-knitted spacer fabric with various appearances can be formed according to the requirements of users, so that the requirements of various occasions on the appearance of the warp-knitted spacer fabric are met.

It should be noted that, in the embodiments of the present invention, the term "connected" may be a direct connection or an indirect connection. The connection can be through a wire or other connection structure, such as a hose. The present solution is not particularly limited.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.