TWI770935B - Method for knitting and forming weft-knitted fabric with varying thickness by flat knitting machine and weft-knitted fabric thereof - Google Patents

Abstract

A method for knitting and forming a weft-knitted fabric with varying thickness by a flat knitting machine and a weft-knitted fabric thereof. The method is implemented in at least one part of a knitting process of the weft-knitted fabric. In initial implementation, the flat knitting machine is driven to knit a basic structure by at least one of two needle beds of the flat knitting machine, and then the two needle beds of the flat knitting machine are controlled to knit a three-dimensional structure connected with the basic structure, and a thickness of the three-dimensional structure is greater than a thickness of the basic structure. The three-dimensional structure includes two surface layer portions and a supporting portion connected with the two surface layer portions and located between the two surface layer portions, wherein the supporting portion does not exist at a junction between the three-dimensional structure and the basic structure.

Description

A method for forming a weft-knitted fabric with varying thickness by a flat knitting machine and the weft-knitted fabric

The present invention relates to a method for knitting to form a fabric with thickness variation and the fabric thereof, in particular to a method for forming a weft knitted fabric with variation in thickness by knitting a flat knitting machine and the weft knitted fabric thereof.

Although three-dimensional fabrics have been around for a long time, even though techniques to change the thickness of three-dimensional fabrics have been derived, as disclosed in CN102978823A, three-dimensional fabrics are always knitted independently. Once there is a thick pad part formed by a three-dimensional fabric and a cloth surface part formed by a general knitted fabric in a clothing design, the three-dimensional fabric and the general knitted fabric need to be knitted separately, and then spliced by a tailor or combined with chemical glue. Of course, stitching by a tailor will form a stitching edge, which will greatly reduce the comfort of the clothing. In addition, because the clothes with thick pads are generally used as close-fitting clothes, the sultry heat caused by long-term wear may produce chemical adhesives and cause qualitative changes, which will affect the wearer's skin. Furthermore, chemical adhesives are not natural products, and excessive use will also have an impact on the environment.

The main purpose of the present invention is to solve the problem that the conventional weft knitted fabric cannot be knitted integrally to produce a three-dimensional structure and needs to be processed afterwards.

In order to achieve the above object, the present invention provides a method for forming a weft knitted fabric with varying thickness with a flat knitting machine, comprising the steps of: driving the flat knitting machine to knit a basic weave with at least one of the two needle beds on the flat knitting machine, and the basic weave is a single-layer fabric or a double-layer fabric; and controlling the two needles on the flat knitting machine The bed knits a three-dimensional weave connected with the basic weave, the three-dimensional weave thickness is greater than the thickness of the basic weave, the three-dimensional weave comprises a two-sided layer part and a three-dimensional weave connected with the two-sided layer part and located between the two-sided layer parts. A support part, wherein the support part does not exist at the junction of the three-dimensional tissue and the basic tissue, and the height of the support part determines the thickness of the three-dimensional tissue, when at least one of the dihedral parts is compressed by force , the support part is deformed.

In one embodiment, the flat knitting machine is controlled to temporarily feed a support yarn at the junction of the three-dimensional weave and the basic weave, and then feed the support yarn to form the support portion after the two-layer portion is knitted for a plurality of needles.

In one embodiment, during the process of knitting the support portion, the flat knitting machine drives the displacement of the second teeth on the second needle bed to change the size of the first mouth of the flat knitting machine, so that the height of the support portion is not constant.

In one embodiment, when the basic weave is the double-layered fabric, the flat knitting machine uses hang-yarn knitting or turn-yarn knitting to make the two fabric surfaces of the double-layered fabric close to each other.

In one embodiment, when the basic weave is the double-layered fabric, the flat knitting machine feeds a cross-linked yarn, so that the two fabric surfaces of the double-layered fabric are closely adhered to each other by the cross-linked yarn, and the cross-linked yarn does not have support ability.

In addition to the foregoing, the present invention further provides a weft knitted fabric with varying thickness, comprising at least one basic weave and at least one three-dimensional weft connected to the basic weft. The basic weave is a single-layer fabric or a double-layer fabric, the thickness of the three-dimensional weave is greater than the thickness of the basic weave, and the three-dimensional weave comprises a dihedral part and a part connected to the dihedral part and located on the two surfaces The support part between the layer parts, the support part does not exist at the junction of the three-dimensional structure and the basic structure, and the height of the support part determines the thickness of the three-dimensional structure, when at least one of the two-sided layer parts is subjected to When the force is pressed, the supporting portion is deformed.

In one embodiment, the support portion is formed of at least one support yarn.

In one embodiment, the height of the support portion is not constant.

According to the foregoing disclosure, compared with the conventional technology, the present invention has the following characteristics: the weft-knitted fabric of the present invention has the basic structure and the three-dimensional structure during knitting, and the three-dimensional structure produces thickness changes, which saves the need for conventional The process of post-processing and pasting three-dimensional objects. Furthermore, the position where the three-dimensional structure is formed in the weft-knitted fabric of the present invention is not limited, and can be adjusted according to the design.

10: Weft knitted fabric

11: Basic Organization

111, 112: Cloth

113: Cross-linked yarn

12: Stereoscopic organization

121, 122: Surface part

123: Support part

124: Support yarn

13: junction

20: Methods

21, 22: Steps

30: Flat knitting machine

31, 32: Needle bed

311, 321: Sky teeth

33: nose

34: Mouth

Fig. 1 is a schematic structural diagram of the first embodiment of the weft knitted fabric of the present invention.

Figure 2 is a schematic diagram of the structure of a flat knitting machine for weaving into weft knitted fabrics.

Fig. 3 is a schematic flow chart of the method of the present invention.

FIG. 4 is a schematic structural diagram of the second embodiment of the weft knitted fabric of the present invention.

Fig. 5 is a schematic structural diagram of the third embodiment of the weft knitted fabric of the present invention.

Figure 6 is a schematic view of the mouth of the flat knitting machine used to weave weft knitted fabrics.

Fig. 7 is a schematic diagram of the structure of a flat knitting machine with variable mouth opening.

FIG. 8 is a schematic structural diagram of the fourth embodiment of the weft knitted fabric of the present invention.

Fig. 9 is a schematic plan view of the weft-knitted fabric of the present invention.

The detailed description and technical content of the present invention are described in conjunction with the drawings as follows: Please refer to FIG. 1 , the present invention provides a weft-knitted fabric 10 with varying thickness, the weft-knitted fabric 10 is made by a flat knitting machine 30 (as shown in FIG. 2 ) (shown) produced by knitting, the weft knitted fabric 10 comprises at least one basic weave 11 and at least one three-dimensional tissue 12 . The basic weave 11 is an unsupported general fabric weave, specifically, the basic weave 11 can be a single-layer fabric or a double-layer fabric, and the structures of the single-layer fabric and the double-layer fabric have been known to those skilled in the art common knowledge, and will not be repeated here. On the other hand, the three-dimensional weave 12 and the basic weave 11 are integrally knitted, that is, the three-dimensional weave 12 is not connected by splicing or the like after the basic weave 11 is knitted. The thickness of the three-dimensional structure 12 is greater than the thickness of the basic structure 11 , so the weft-knitted fabric 10 can be observed from the side (viewing angle as shown in FIG. 1 ) to find the thickness change. It should be understood that the thickness change referred to in this case does not refer to the thickness of the yarns stacked, but refers to the change produced by side observation. In addition, the three-dimensional tissue 12 includes dihedral parts 121 and 122 and a support part 123 connected to the dihedral parts 121 and 122 and located between the dihedral parts 121 and 122. The support part 123 does not exist At the junction of the three-dimensional tissue 12 and the basic tissue 11 . Furthermore, in order to form the thickness of the three-dimensional structure 12, the three-dimensional structure 12 is implemented with at least one supporting yarn 124, and the supporting yarn 124 is deformed when at least one of the two-layer parts 121 and 122 is compressed by force. . The three-dimensional structure 12 can be regarded as a thick pad directly formed on the weft knitted fabric 10 , so the weft knitted fabric 10 disclosed in the present invention can be used as a breast pad in women's clothing or a buffer pad on sports clothing.

Referring to FIGS. 1 to 3 , in addition to the foregoing, the present invention also provides a method 20 , which uses the flat knitting machine 30 to knit the weft knitted fabric 10 . The method 20 includes the following steps: Step 21 : driving the flat knitting machine 30 to knit the basic weave 11 with at least one of the two needle beds 31 and 32 on the flat knitting machine 30 ; and step 22 : controlling the flat knitting machine The two needle beds 31, 32 on the 30 knit the three-dimensional weave 12, the three-dimensional weave 12 is thicker than the basic weave 11, and the three-dimensional weave 12 includes the diface layer parts 121, 122 and the support part 123, wherein the three-dimensional weave 12 The support portion 123 does not exist at the junction of the three-dimensional tissue 12 and the basic tissue 11 .

Hereinafter, the method 20 is described by using the basic weave 11 as the single-layer fabric, and it is assumed that the flat knitting machine 30 is ready to knit the basic weave 11 (ie, the step 21 ). The flat knitting machine 30 uses a head 33 on the flat knitting machine 30 to drive one of the two needle beds 31 and 32 to knit the basic weave 11 based on the setting of the knitting process. When the weaving process enters the knitting of the three-dimensional weave 12, the machine head 33 drives the two needle beds 31, 32 to knit the two-layer parts 121, 122. At this time, one of the two-layer parts 121, 122 is It can be formed by continuous knitting of the basic weave 11, the other of the two-face layer parts 121, 122 is knitted and formed at this point, and the flat knitting machine 30 is set to transfer stitches at the beginning of the formation of one of the face-layer parts 122. A technique such as transfer or tuck is used to connect one of the surface layer parts 121 and the basic tissue 11 . Further, the flat knitting machine 30 is controlled to suspend feeding of the support yarn 124 at the junction of the three-dimensional weave 12 and the basic weave 11 (marked as 13 in the figure), until the two-face layer parts 121 and 122 are knitted. The supporting yarn 124 is fed after a few stitches to form the supporting portion 123 . Therefore, the weft-knitted fabric 10 of the present invention has a bag-like structure at the junction of the three-dimensional structure 12 and the basic structure 11 (marked as 13 in the figure). In one embodiment, the feeding time point of the support yarn 124 is after the two-face layer portions 121 and 122 are knitted for a plurality of needles. The aforementioned number of waiting stitches can be adjusted based on fabric characteristics. After the supporting yarn 124 participates in knitting, the supporting portion 123 is formed between the two-layer portions 121 and 122. The supporting portion 123 prevents the two-layer portions 121 and 122 from being in close contact with each other, and makes the three-dimensional weave 12 in the It is visually thicker than the basic structure 11 . It should be understood that the method of the present invention is not limited to the end immediately after the knitting of the three-dimensional weave 12, the weft-knitted fabric 10 can be designed according to the fabric sample, and after the three-dimensional weave 12 is knitted, the basic weave 11 is knitted again, As shown in Figure 4.

Please refer to FIG. 2 to FIG. 5 again, the method 20 is described in the following by using the basic weave 11 as the double-layered fabric, and it is also assumed that the flat knitting machine 30 is ready to knit the basic weave 11 (ie, the step 21 ). . The flat knitting machine 30 uses the machine head 33 to simultaneously drive the two needle beds 31 and 32 to knit the basic weave 11 based on the setting of the knitting process, so as to produce two fabric surfaces 111 and 112 that mainly constitute the double weave. knitting machine 30 In the process of knitting the two fabric surfaces 111 and 112 , the two fabric surfaces 111 and 112 are cross-linked and closely adhered to each other by means of turning yarn knitting or hanging yarn knitting or additionally feeding a cross-linking yarn 113 . When the weaving process enters the knitting of the three-dimensional weave 12 , the two-sided layer parts 121 and 122 can be the continuation of the two fabric surfaces 111 and 112 . It should be noted that the weaving process is at the transition from the basic weave 11 to the three-dimensional fabric 12 . (marked as 13 in the figure), there will not be any structure connecting the two-face layer parts 121 and 122. According to the industry, the supporting part 123 is at the junction of the basic weave 11 and the three-dimensional fabric 12. Implemented with an empty needle. After that, the support yarn 124 is fed to participate in knitting, and the knitting of the three-dimensional fabric 12 is performed. The knitting of the three-dimensional fabric 12 is as described above and will not be repeated.

The thickness of the three-dimensional weave 12 is determined by the length of the support yarn 124 , and the length of the support yarn 124 during the knitting process is determined by the width of a mouth 34 of the flat knitting machine 30 (as shown in FIGS. 2 and 6 ). It should be understood that the change of the width of the mouth 34 affects the forming size of the yarn ring at the same time. When the width of the mouth 34 is larger, the woven yarn loop will become larger, and it will be difficult to form the cloth surface structure if the yarn loop is too large. Therefore, if the size of the mouth opening 34 cannot be changed during the knitting process, when designing the thickness of the three-dimensional weave 12, the size of the yarn loops of the basic fabric 11 and the two-layer parts 121 and 122 must be considered. Furthermore, if the flat knitting machine 30 can change the width of the mouth 34 during the knitting process without stopping knitting, the problem that the thickness of the three-dimensional structure 12 is limited to a single width can be eliminated. The applicant of this case has proposed a flat knitting machine structure with variable mouth during knitting, as disclosed in Patent Nos. TW 202028555A, TW 202028557A, TW 202028558A, and TW I707074. Please refer to FIG. 7 , when knitting, the flat knitting machine 30 is controlled to drive the second teeth 311 , 321 on the second needle beds 31 , 32 to displace to change the flat knitting machine 30 when knitting the supporting portion 123 of the three-dimensional weave 12 . The size of the mouth 34 of the knitting machine 30 is adjusted to meet the knitting requirements at the mouth 34 , and the flat knitting machine 30 performs the knitting of the needles of the supporting portion 123 . In this way, the height of the support portion 123 will no longer be a constant value, and the three-dimensional tissue 12 will no longer have a single thickness and may have thickness variations, as shown in FIG. 8 .

Referring to FIG. 9 , the three-dimensional structure 12 on the weft knitted fabric 10 of the present invention does not limit the knitting position, and the knitting position can be determined according to the fabric design requirements.

To sum up, the above is only a preferred embodiment of the present invention, and should not limit the scope of implementation of the present invention, that is, all equivalent changes and modifications made according to the scope of the patent application of the present invention should still belong to the present invention. patent coverage.

10: Weft knitted fabric

11: Basic Organization

12: Stereoscopic organization

121, 122: Surface part

123: Support part

124: Support yarn

13: junction

Claims (8)

A method for forming a weft knitted fabric with varying thickness by a flat knitting machine, comprising the steps of: driving the flat knitting machine to knit a basic weave with at least one of two needle beds on the flat knitting machine, and the basic weave is a single layer fabric or a double layer fabric; and control the two needle beds on the flat knitting machine to knit a three-dimensional weave connected with the basic weave, the three-dimensional weave thickness is greater than the thickness of the basic weave, the three-dimensional weave includes a diface layer part and A support part connected to the dihedral part and located between the dihedral parts, wherein the support part does not exist at the junction of the three-dimensional structure and the basic structure, and the height of the support part determines the three-dimensional structure The thickness of the tissue, the support portion deforms when at least one of the dihedral portions is compressed. The method for forming a weft knitted fabric with varying thickness by a flat knitting machine according to claim 1, wherein the flat knitting machine is controlled to suspend feeding a support yarn at the junction of the three-dimensional weave and the basic weave, and wait for the two sides The support yarn is fed to form the support portion after the layer portion is knitted with a plurality of needles. The method for forming a weft knitted fabric with varying thickness by a flat knitting machine according to claim 1 or 2, wherein the flat knitting machine drives the displacement of the second teeth on the second needle bed during the process of knitting the support portion to change the The size of the mouth of the flat knitting machine makes the height of the support part not a fixed value. The method for forming a weft-knitted fabric with varying thickness by a flat knitting machine according to claim 3, wherein, when the basic weave is the double-layered fabric, the flat-knitting machine makes the double-layered fabric by hanging yarn knitting or turning yarn knitting. The two cloth surfaces are close to each other. Forming a weft knit of varying thickness with a flat knitting machine as described in claim 1 or 2 The method of fabricating, wherein, when the basic structure is the double-layered fabric, the flat knitting machine feeds a cross-linked yarn, so that the two fabric surfaces of the double-layered fabric are closely adhered to each other by the cross-linked yarn, and the cross-linked yarn Not able to support. A weft-knitted fabric with varying thickness, comprising: at least one basic weave, which is a single-layer fabric or a double-layer fabric; and at least one three-dimensional weave, connected with the basic weave, the thickness of the three-dimensional weave is greater than the thickness of the basic weave , the three-dimensional structure comprises a dihedral layer part and a support part connected with the two-sided layer part and located between the two-sided layer parts, the support part does not exist at the junction of the three-dimensional structure and the basic structure, and The height of the support portion determines the thickness of the three-dimensional tissue, and when at least one of the dihedral portions is pressed by a force, the support portion is deformed. The weft-knitted fabric with varying thickness as claimed in claim 6, wherein the supporting portion is formed by at least one supporting yarn. The weft-knitted fabric with thickness variation according to claim 6 or 7, wherein the height of the support portion is not constant.

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