CN112176511B

CN112176511B - Weft knitting machine knitting structure with yarn position changeable

Info

Publication number: CN112176511B
Application number: CN201910584558.1A
Authority: CN
Inventors: 李信忠
Original assignee: Pai Lung Machinery Mill Co Ltd
Current assignee: Pai Lung Machinery Mill Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2022-05-31
Anticipated expiration: 2039-07-01
Also published as: CN112176511A

Abstract

A knitting structure of a weft knitting machine with yarn positions changeable comprises a face yarn and a bottom yarn located below the face yarn, the knitting structure of the weft knitting machine comprises a plurality of sinkers and a plurality of knitting needles, the knitting needles are respectively arranged adjacent to one of the sinkers, and each sinker is guided to perform linear displacement movement. Each knitting needle is respectively provided with a needle hook and a needle tongue capable of closing relative to the needle hook, and each knitting needle is controlled to use a first narrowing track which does not change the position of the face yarn and the bottom yarn in the needle hook to weave a normal plated loop or a second narrowing track which can use the needle tongue to stir the bottom yarn when the position of the face yarn and the bottom yarn is not limited by one adjacent sinker so as to change the position of the face yarn and the bottom yarn in the needle hook to weave a yarn changing plated loop.

Description

Weft knitting machine knitting structure with yarn position changeable

Technical Field

The invention relates to a knitting structure of a weft knitting machine, in particular to a knitting structure of a weft knitting machine with yarn positions changeable.

Background

Plating, also known as Plating or lapping, refers to the simultaneous feeding of two yarns (Yarn) of different colors during knitting, so that a Technical Face (Technical Face) and a Technical Back (Technical Back) of a knitted fabric (Fabrics) appear in different colors. However, in order to increase the color change or pattern change of the fabric, the prior art proposes to change the position of the two yarns fed during the knitting process in order to change the color of the plated loop on the front side of the fabric, the surface of which is shown in fig. 1. In light of this, the aforementioned knitting technique is known in the art as Jacquard (Jacquard).

For US1,666,794, US1,950,405, US3,157,035, US2,616276, CN104532458A, WO00/15890A, etc., these patents change the feeding position of two yarns by the structure or matching structure of a yarn feeder itself. However, since the yarn feeder is still distant from the position where knitting is performed by a weft knitting machine, even though the yarn feeder can change the yarn position immediately, a plurality of needles located at a distance can still catch the yarn at the non-changed position, resulting in a problem of ghost on the fabric, as indicated at 90 in fig. 2.

In addition, there are embodiments in which the yarn changing requirement is accomplished by a plurality of sinkers, as disclosed in US1,977,590 and CN2249253Y, but such embodiments will greatly reduce the number of needles that can be allocated to each port of the weft knitting machine, which is not suitable for the requirement of the current industry for the number of needles.

Disclosure of Invention

The invention mainly aims to solve the problem that the fabric is easy to have residual shadow caused by the implementation of yarn knitting by a yarn feeder in the prior art.

The invention aims to solve the practical application problem derived from the fact that a plurality of sinkers are required to replace yarns in the prior art.

To achieve the above object, the present invention provides a knitting structure of a weft knitting machine with changeable yarn positions, wherein a face yarn and a bottom yarn below the face yarn are fed during knitting, the knitting structure of the weft knitting machine comprises a plurality of sinkers and a plurality of knitting needles, the sinkers are respectively adjacent to one of the knitting needles, each sinker has an abdomen portion, a nose portion connected with the abdomen portion and a throat portion between the abdomen portion and the nose portion, each sinker is guided to perform a linear displacement motion, the face yarn is located above the nose portion after the linear displacement motion, and the bottom yarn is located in the throat portion. The knitting needles are respectively provided with a needle hook and a latch capable of closing relative to the needle hook, each knitting needle is controlled to use the latch to stir the bottom yarn when the positions of the face yarn and the bottom yarn in the needle hook are not changed and the positions of the face yarn and the bottom yarn are not limited by one of the adjacent sinkers so that the bottom yarn is pushed by the nose part of the sinker and a second latch track for changing the yarn plating ring is formed by the face yarn and the bottom yarn in the needle hook, and the time point of the latch generating the closing action in the second latch track of each knitting needle is earlier than the first latch track.

In one embodiment, the knitting structure of the weft knitting machine comprises a knitting needle guide plate for guiding the knitting needles to perform the first narrowing path or the second narrowing path and a sinker guide plate for guiding the sinker rows to perform the linear displacement motion. Furthermore, the knitting structure of the weft knitting machine further comprises a needle selector for controlling each knitting needle.

In one embodiment, each sinker has only a single motion track, the motion track is cyclically performed with a first retracting section, a first pushing-out section connected with the first retracting section, a second retracting section connected with the first pushing-out section, and a second pushing-out section connected with the second retracting section, the time point of the latch of each needle in the first retracting track generating the closing motion is adjacent to the time point of one sinker moving to the second retracting section, and the time point of the latch of each needle in the second retracting track generating the closing motion is adjacent to the time point of one sinker moving to the first pushing-out section.

In one embodiment, the face yarn and the ground yarn are different colors.

Compared with the prior art, the invention has the following characteristics: the knitting structure of the weft knitting machine disclosed by the invention is characterized in that the yarn positions are changed at the feeding points of the face yarn and the bottom yarn, so that the yarn changing knitting requirements can be quickly reflected, and the fabric is prevented from generating residual shadows. In addition, the knitting structure of the weft knitting machine can achieve the purpose of rapid yarn changing knitting without greatly modifying the integral structure.

Drawings

Figure 1 is a schematic view of the fabric when the yarn is correctly changed.

Fig. 2 is a schematic diagram of a cloth cover with a residual shadow of the fabric.

FIG. 3 is a schematic structural view of a knitting structure of the weft knitting machine according to the embodiment of the present invention.

Fig. 4 is a comparison of the needle and sinker trajectory according to an embodiment of the invention.

Fig. 5 is a schematic diagram illustrating the operation of a sinker according to an embodiment of the present invention.

FIG. 6 is a schematic view of the narrowing operation of the knitting needle moving in the first narrowing path according to the embodiment of the present invention.

FIG. 7 is a schematic view of the position of the face yarn and the ground yarn in the hook during standard stitch plating according to one embodiment of the present invention.

FIG. 8 is a schematic drawing (I) of the narrowing action of the knitting needle moving in the second narrowing track according to the embodiment of the present invention.

FIG. 9 is a schematic view (two) of the narrowing action of the knitting needle moving in the second narrowing track according to the embodiment of the invention.

FIG. 10 is a schematic view of the position of the face yarn and the ground yarn inside the needle hook during the yarn changing and the loop plating according to one embodiment of the present invention.

Detailed Description

The present invention is described in detail and technical content with reference to the accompanying drawings, wherein:

referring to fig. 3 to 5, the present invention provides a knitting structure 10 of a weft knitting machine with changeable yarn positions, which is disposed on a needle bed 20 of the weft knitting machine, wherein the weft knitting machine can be a circular knitting machine. The knitting structure 10 of the weft knitting machine comprises a plurality of sinkers 11(Sinker) and a plurality of knitting needles 12, wherein the sinkers 11 are arranged at equal intervals, and each Sinker 11 has a belly 111, a nose 112 connected with the belly 111, and a throat 113 between the belly 111 and the nose 112. Each sinker 11 has a yarn-receiving surface 114 on the side of the nose portion 112 not facing the throat portion 113, and the yarn-receiving surface 114 is not limited by a plane and can be designed accordingly according to the implementation requirements. On the other hand, the end of the nose 112 is a yarn pushing surface 115, in the embodiment, the yarn pushing surface 115 is set to be a plane, but not limited thereto and can be designed accordingly according to implementation requirements. Furthermore, each sinker 11 of the present invention is guided by a sinker guide plate 13 and can perform a linear displacement motion 116. Further, the linear displacement motion 116 is actually a one-dimensional motion.

Referring to fig. 3 to 6, the knitting needles 12 are respectively disposed adjacent to one of the sinkers 11, that is, each knitting needle 12 is respectively disposed between two adjacent sinkers 11. Each knitting needle 12 has a hook 121 and a latch 122 capable of performing a closing motion with respect to the hook 121. Furthermore, when each knitting needle 12 is out of the needle hook, the latch 122 is opened relative to the needle hook 121, so that the yarn can enter the needle hook 121. Furthermore, when each knitting needle 12 is closed, the latch 122 performs the closing operation toward the hook 121 due to the previous plated loop 50 knitted, so as to close the originally open portion of the hook 121. In addition, the knitting needles 12 are disposed in a direction in which the open portion of the hook 121 faces the throat portion 113 of one of the sinkers 11, as shown in fig. 6. In addition, the motion direction of the knitting needles 12 is perpendicular to the direction of the linear displacement motion 116, and the knitting needles 12 are guided by a knitting needle guide plate 14 respectively to control each knitting needle 12 to move in a first narrowing path 40 or a second narrowing path 41. Further, each of the knitting needles 12 is controlled by a selector. Furthermore, the closing motion of the latch 122 in the second narrowing path 41 of each knitting needle 12 is earlier than that in the first narrowing path 40.

Referring to fig. 3 to 5, the knitting structure 10 of the weft knitting machine receives a face yarn 30 fed by a yarn feeding device (not shown) and a ground yarn 31 located below the face yarn 30. In one embodiment, the face yarns 30 and the ground yarns 31 are different colors. For the sake of illustration, the relationship between each sinker 11 and the face yarn 30 and the ground yarn 31 is explained only by the fact that the knitting needles 12 are not operated. Accordingly, each sinker 11 is guided by the sinker guide plate 13 to perform the linear displacement motion 116, during the linear displacement motion 116, the face yarn 30 is always located above the nose portion 112, and the ground yarn 31 is always located in the throat portion 113. Furthermore, each of the sinkers 11 performs only one-dimensional motion.

Referring to fig. 4, 6 and 7, the operation of each knitting needle 12 is explained, and the operation of each sinker 11 is not assumed to be inactive in the following description, but the overall operation of the knitting structure 10 of the weft knitting machine is described. Accordingly, when each knitting needle 12 moves along the first narrowing track 40, each knitting needle 12 does not change the position of the face yarn 30 and the ground yarn 31 in the needle hook 121 to knit a normal Plating loop (Standard Plating), which is called as a Plating loop in which the face yarn 30 is located above the ground yarn 31 when viewed from a technical front of a fabric. Referring to fig. 8 to 10, when each knitting needle 12 moves along the second narrowing track 41, each knitting needle 12 shifts the ground yarn 31 by the latch 122 when the position of the face yarn 30 and the ground yarn 31 is not defined by one of the adjacent sinkers 11, so that the ground yarn 31 is pushed by the nose portion 112 of the sinker 11 to change the position of the face yarn 30 and the ground yarn 31 in the needle hook 121, and a yarn changing plated loop (exchanged Plating) is knitted, where the yarn changing plated loop is a plated loop in which the face yarn 30 is located below the ground yarn 31 when viewed from the front of the fabric. Accordingly, the knitting structure 10 of the weft knitting machine according to the present invention allows the yarn to be shifted depending on whether the needles 12 are moved in the first narrowing path 40 or the second narrowing path 41.

Referring to fig. 4, each sinker 11 of the present invention has only a single movable track 42, and the movable track 42 is circularly performed with a first retracting section 421, a first pushing-out section 422 connected to the first retracting section 421, a second retracting section 423 connected to the first pushing-out section 422, and a second pushing-out section 424 connected to the second retracting section 423. The withdrawing action defined in the present invention means that each sinker 11 is displaced in a direction away from the feeding point of the face yarn 30 and the bottom yarn 31, and when each sinker 11 is displaced to a position away from the face yarn 30 and the bottom yarn 31, the face yarn 30 and the bottom yarn 31 are not restricted by the sinker 11. The pushing action defined in the present invention means that after each sinker 11 is retracted, the sinker 11 is displaced toward the feeding point of the face yarn 30 and the ground yarn 31, and when the sinker 11 is displaced to the feeding point of the face yarn 30 and the ground yarn 31, the face yarn 30 and the ground yarn 31 are restricted by the sinker 11 and cannot change positions. As can be seen, the position of each sinker 11 in each section of the movable track 42 is continuously varied, not only at a single position. Referring to fig. 6 and 7, when each knitting needle 12 of the present invention moves along the first narrowing path 40, the closing action of the latch 122 is performed at a time point adjacent to the time point when one sinker 11 moves to the second retracting section 423. Thus, the face yarn 30 and the bottom yarn 31 are engaged by the needle 121 in a state of being fed into the knitting structure 10 of the weft knitting machine. Referring to fig. 8 to 10 again, in another aspect of the present invention, when each knitting needle 12 moves along the second narrowing track 41, the time point of the latch 122 generating the closing action is a stage when one sinker 11 moves to the first push-out section 422, and further, the time point of the latch 122 generating the closing action is not the last point of the first push-out section 422, but each sinker 11 still does not limit the position of the face yarn 30 and the ground yarn 31 in the first push-out section 422. Therefore, when the latch 122 of each knitting needle 12 performs the closing motion, the bottom yarn 31 is shifted to make the bottom yarn 31 deviate from the original position and be located on the displacement track of the nose portion 112 of one of the adjacent sinkers 11, so that the sinker 11 continuously performing the pushing-out motion pushes the bottom yarn 31 by the yarn pushing surface 115, and the bottom yarn 31 changes the relative position with the face yarn 30 until the hook 121 of one of the knitting needles 12 is hooked.

In the invention, the position of the face yarn 30 and the bottom yarn 31 fed to the knitting structure 10 of the weft knitting machine is changed to carry out jacquard knitting. Compared with the conventional weft knitting machine, the weft changing reaction time of the weft knitting machine knitting structure 10 is real-time, and the problem that the pattern on the fabric has the afterimage due to the fact that the conventional weft changing reaction speed is low can be solved.

[ legends of drawings ]

10

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A nose

A

115

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121

A

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A

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A

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90.

Claims

1. A weft knitting machine knitting structure capable of changing yarn positions is characterized by comprising a face yarn and a bottom yarn positioned below the face yarn during knitting:

a plurality of sinkers, each sinker having an abdomen, a nose connected to the abdomen, and a throat between the abdomen and the nose, each sinker being guided to perform a linear displacement motion in which the face yarn is located above the nose and the ground yarn is located in the throat; and

the knitting needles are respectively arranged adjacent to one of the sinkers and move in a direction perpendicular to the linear displacement motion of the sinkers, each knitting needle is provided with a needle hook and a needle tongue capable of performing closing motion relative to the needle hook, each knitting needle is controlled to use the needle tongue to shift the bottom yarn to enable the bottom yarn to be pushed by the nose part of the sinker to change the first narrowing track of a normal plating ring formed in the inner position of the needle hook by the face yarn and the bottom yarn without changing the positions of the face yarn and the bottom yarn when one adjacent sinker does not limit the positions of the face yarn and the bottom yarn, and the time point of the closing motion of the needle tongue in the second narrowing track of each knitting needle is earlier than that of the first narrowing track.

2. A weft knitting machine knitting structure according to claim 1 characterized in that the weft knitting machine knitting structure includes a needle guide plate for guiding the needle to perform the first narrowing path or the second narrowing path and a sinker guide plate for guiding the sinker to perform the linear displacement motion.

3. The knitting structure of a weft knitting machine with changeable yarn positions according to claim 2, characterized in that the knitting structure of the weft knitting machine comprises a selector for controlling each of the knitting needles.

4. The knitting structure of weft knitting machine with changeable yarn position according to claim 1, 2 or 3 characterized in that each sinker has only a single active track, the active track is cyclically followed by a first withdrawal section, a first push-out section following the first withdrawal section, a second withdrawal section following the first push-out section and a second push-out section following the second withdrawal section, the closing action of the latch in the first withdrawal track is generated by each needle at a time point adjacent to the first push-out section and the closing action of the latch in the second withdrawal track is generated by each needle at a time point adjacent to the first push-out section.

5. The knitting structure of the weft knitting machine with changeable yarn position according to claim 4, characterized in that the face yarn and the ground yarn are different in color.

6. A knitting structure of a weft knitting machine with changeable yarn position according to claim 1, 2 or 3, characterized in that the face yarn and the base yarn are different in color.