A sinker for a single-sided circular weft knitting machine and a knitting process

Abstract

The present invention relates to the technical field of knitting, and provides a sinker for a single-sided circular weft knitting machine and a knitting process. The single-sided circular weft knitting machine includes a sinker cam and a corresponding first sinker. A first heel, which protrudes upward and cooperates with the sinker cam, is provided in the middle or at the rear end of the first heel track. A first upper jaw is provided above the front end of the first heel track and above the first lower jaw. Above the first upper throat is the first nose; the knitting methods of the single-sided circular weft knitting machine include loop knitting, tuck knitting, and float knitting performed by the sinker cam cooperating with the first sinker. The knitting methods of the single-sided circular weft knitting machine also include reserved loop knitting or reserved tuck knitting performed by the sinker cam cooperating with the first sinker. The present invention solves the problems of poor stability of the weft knitted fabric of the existing single-sided circular weft knitting machine, easy unraveling and curling, lack of stiffness, and easy pilling.

Description

Technical Field

[0001] The present invention relates to the technical field of knitting, and particularly to a sinker for a single-sided circular weft knitting machine and a knitting process. Background Art

[0002] Currently, the well-known single-sided circular weft knitting machine is a complete loop-forming system, and its knitting process is usually composed of various single-sided composite tissues combined by three knitting methods: loop-forming, tucking, and non-knitting (also known as float). The common feature of the weft knitted fabric knitted by the single-sided circular weft knitting machine is that the unit loops of each row are strung or interwoven with the loop-forming, non-knitting or tucking composite tissues of the previous row. Therefore, the weft knitted fabric knitted by the existing single-sided circular weft knitting machine has the following disadvantages: (1) Poor dimensional stability: resulting in a large shrinkage rate and easy deformation. (2) Easy to run-off and curl: prone to run-off and curling during cutting and sewing. (3) Not stiff enough: the fabric surface is relatively soft and lacks a certain degree of stiffness. (4) Prone to pilling: easy to pill when knitting chemical fiber weft knitted fabrics. Summary of the Invention

[0003] Therefore, in view of the above problems, the present invention provides a sinker for a single-sided circular weft knitting machine and a knitting process, which can change the characteristics of the existing weft knitted fabric, improve the knitting dimensional stability of the single-sided circular weft knitting machine, reduce the shrinkage rate, reduce run-off and curling, resist pilling, and improve the fabric physical properties.

[0004] To solve this technical problem, the present invention adopts the following solution: A sinker for a single-sided circular weft knitting machine includes a plurality of first sinkers provided on the needle cylinder of the single-sided circular weft knitting machine and corresponding to the sinker cams. The first sinker includes a first heel track and a first lower jaw provided at the front end of the first heel track. A first lower throat is correspondingly provided on the holding plane of the first lower jaw. A first heel protruding upward and cooperating with the sinker cam is provided in the middle or at the rear end of the first heel track. A first air flow guiding groove with an asymmetric streamline V-shaped cross-section facing the first lower throat is provided at the rear end of the first lower jaw. The lower part of the inner cavity of the first lower jaw is a first waveform curve-shaped self-tightening part.

[0005] Further, a first upper jaw is provided above the first lower jaw at the front end of the first heel track. A first upper throat is correspondingly provided on the holding plane of the first upper jaw, and a first nose is above the first upper throat.

[0006] Further, a first fin-shaped fluff scraping part that is in clearance fit with the end face of the sinker cam is provided at the upper part of the rear end of the first air flow guiding groove and extends towards the first heel track.

[0007] Further, it further includes a plurality of second sinkers provided on the cylinder of the single jersey circular knitting machine and corresponding to the sinker cams. The second sinkers include second heel tracks and second nose portions provided at the front ends of the second heel tracks. The plurality of first sinkers and the plurality of second sinkers are arranged in a mixed manner on the cylinder of the circular knitting machine.

[0008] Furthermore, the plurality of first sinkers and the plurality of second sinkers provided on the cylinder of the single jersey circular knitting machine are arranged in a mixed and alternating manner.

[0009] A single jersey circular knitting process based on the sinkers for the above single jersey circular knitting machine includes a single jersey circular knitting machine. The knitting methods of the single jersey circular knitting machine include loop knitting, tuck knitting, and float knitting carried out by the sinker cams in cooperation with the first sinkers. The knitting methods of the single jersey circular knitting machine also include reserved loop knitting carried out by the sinker cams in cooperation with the first sinkers.

[0010] The reserved loop knitting includes the following steps:

[0011] S1. Starting from loop knitting, the yarn is fed into the hook of the knitting needle and is bent and knitted into a loop with the first lower jaw of the first sinker to form an original loop in the hook of the knitting needle.

[0012] S2. Then, the original loop and the sinker loop in the hook of the knitting needle are held by the first lower throat of the first sinker, and the knitting needle rises along the cylinder cam in cooperation with the first heel track. At this time, the original loop in the hook of the knitting needle forces the latch to open and slides below the latch to complete the loop withdrawal.

[0013] S3. When the first heel of the first sinker is pushed to the innermost point towards the inner diameter of the cylinder along the first heel track, the knitting needle descends to make the latch flip upward under the action of the original loop.

[0014] S4. The yarn is fed into the hook of the knitting needle and is bent and knitted with the first upper jaw of the first sinker to form a new loop of a set length. At this time, the original loop is separated on both sides of the latch.

[0015] S5. The knitting needle further descends, and the original loop pushes the latch to close and form a loop. The new loop is laid on the first upper jaw of the first sinker to form a new long sinker loop and a needle loop arc, completing the reserved loop knitting.

[0016] Further, during the reserved loop knitting, different lengths of sinker loops are formed by the first sinkers provided on the upper plate and the sinker cams making different amplitudes of pushing and non-pushing actions in cooperation.

[0017] Another single - jersey circular knitting machine knitting process based on the sinker for the aforementioned single - jersey circular knitting machine includes a single - jersey circular knitting machine. The knitting methods of the single - jersey circular knitting machine include loop knitting, tuck knitting, and float knitting with the sinker cam cooperating with the first sinker. The knitting methods of the single - jersey circular knitting machine also include reserved tuck knitting with the sinker cam cooperating with the first sinker;

[0018] The reserved tuck knitting includes the following steps:

[0019] S1. Starting from loop knitting, the yarn is fed into the hook of the knitting needle and bent and looped with the first lower - jaw of the first sinker to form an original loop in the hook of the knitting needle;

[0020] S2. Then, the original loop and the sinker loop in the hook of the knitting needle are held by the first lower - throat of the first sinker, and the knitting needle rises along the cylinder cam in coordination with the first butt track. At this time, the original loop in the hook of the knitting needle forces the latch to open and slide above the latch. The loop in the upper row of the original loop and below the latch is called the old loop;

[0021] S3. When the first butt of the first sinker is pushed to the innermost point along the first butt track towards the inner diameter of the cylinder, the knitting needle descends to make the latch flip upward under the action of the original loop;

[0022] S4. The yarn is fed into the hook of the knitting needle and bent and looped with the first upper - jaw of the first sinker to form a new loop of a set length. At this time, the fed new loop and the original loop are separated on both sides of the latch in the hook of the knitting needle from the old loop;

[0023] S5. The knitting needle further descends, and the old loop pushes the latch to close and loop. The new loop lays yarn to form a new long sinker loop and a stitch - formed loop on the first upper - jaw of the first sinker, completing the reserved tuck knitting.

[0024] Furthermore, during knitting, the reserved tuck knitting action is carried out by the first sinker and the sinker cam on the upper disk making different - amplitude pushing and non - pushing actions in cooperation to form sinker loops of different lengths.

[0025] By adopting the foregoing technical solutions, the beneficial effects of the present invention are as follows: By setting a newly developed sinker on the upper disk of the single - jersey circular knitting machine, which cooperates with the sinker cam, multiple combinations of the double jaws and double butts of the sinker and the sinker cam are used to design new knitting methods on the single - jersey circular knitting machine: reserved loop knitting and reserved tuck knitting. That is, between the traditional basic combined knitting methods of loop knitting, tuck knitting, and float knitting, a reserved loop knitting action between loop knitting and tuck knitting and a reserved tuck knitting action between tuck knitting and float knitting are derived to generate new loop forms and more complex fabric processes. The combined application of reserved loop knitting or reserved tuck knitting with the traditional loop knitting, tuck knitting, and float knitting makes the weft - knitted fabric knitted have the following advantages:

[0026] (1) Good dimensional stability: The realization of the unit coil combination across the horizontal rows makes the dimensional stability of the composite process better in both the horizontal and vertical directions, with a small shrinkage rate during wearing and not easily deformed.

[0027] (2) Crispness: The fabric surface is relatively crisp, suitable for making clothes that require a certain degree of crispness.

[0028] (3) Small tendency to ravel: It makes the fabric surface tightly woven and will not easily ravel into threads, and the fabric surface is relatively stable.

[0029] (4) Not easily curled: It is not easy to curl during the cutting and sewing processes.

[0030] (5) Good air permeability: Some fabrics use the reserved tuck stitch knitting combination to produce a through-hole effect, with an air conditioning channel effect and a unidirectional moisture conduction and sweat discharge function.

[0031] By setting an asymmetric streamline V-shaped cross-section air flow guiding groove on the sinker, it is easier to blow compressed air pulses into the rear end of the sinker throat to clean the flying fibers that are about to accumulate on the sinker, thus effectively solving the problem that short fiber yarns are prone to accumulate in the forming area of a single-sided circular weft knitting machine, causing cumulative blockage in the sinker grooves of the cylinder, which in turn increases the running resistance of the sinker, makes the equipment load heavier, raises the energy consumption, is prone to cause wear of objects, and requires disassembly and cleaning of the machine, which is time-consuming and laborious. This avoids many uncertain changes in fabric quality and effectively extends the cleaning time of the machine. By setting a waveform curve-shaped self-tightening part below the inner cavity of the sinker throat, the inner cavity of the sinker can be effectively enlarged, making it difficult for flying fibers generated during the knitting process to accumulate. The asymmetric streamline V-shaped cross-section air flow guiding groove of the sinker realizes air flow acceleration of the sinker, and the increased distance between the inner cavity and the air flow guiding groove allows the pulsed air flow to penetrate under the waveform curve-shaped pre-tightening part of the sinker during the intermittent high-speed reciprocating movement of the sinker. In the inner cavity of the sinker, the flow direction and flow velocity show chaotic changes at different positions and times, without regularity, and there is a pulsation phenomenon, which makes the flying fibers that may adhere to the sinker peel off and fall off, effectively solving the problem that it is difficult to remove flocs due to the flow disturbance effect of the traditional sinker structure, further effectively extending the cleaning time of the machine, improving production efficiency, reducing maintenance costs, and keeping the sinker and the knitting area clean. At the same time, a fin-shaped floc scraping part is provided at the rear end of the air flow guiding groove of the sinker. Since some of the flying fibers removed by pulsed injection diffuse with the air flow and accumulate on the triangular end face of the sinker at the rear of the asymmetric streamline V-shaped cross-section air flow guiding groove for a long time, the fin-shaped floc scraping part and the triangular end face of the sinker are in clearance fit. When some flying fibers adhere to the triangular end face of the sinker, the fin-shaped floc scraping part contacts the flying fibers and rotates with the cylinder to scrape the flying fibers. Due to the centrifugal force, the oblique setting of the fin-shaped floc scraping part can throw the flying fibers towards the outer diameter direction of the cylinder, preventing the flying fibers from adhering to the triangular end face of the sinker near the rear of the asymmetric streamline V-shaped cross-section air flow guiding groove and avoiding the flying fibers from being woven into the fabric and causing knitting defects. In addition, the transition fit tolerance between the waveform curve-shaped pre-tightening part and the cylinder ensures that the sinker does not float up and down during the reciprocating movement of the sinker during knitting. The floating is eliminated by the elastic compensation of the waveform curve-shaped pre-tightening part of the sinker, and it can slide smoothly, enhancing the holding of the coil and the same auxiliary loop formation, improving the uniformity of the unit coil shape of the knitted fabric, which is a key factor in knitting high-quality fabrics.By controlling the reserved loop knitting or reserved tuck knitting, different amplitudes of pushing and non-pushing actions are performed by the first sinker and sinker cams set on the upper dial during knitting to cooperate with each other for knitting, forming sinker loops of different lengths. Since the sinker loop lengths of the reserved loop knitting and reserved tuck knitting in cooperation with the first sinker and sinker cams are longer than the traditional loop and tuck stitch loops, the sinker loops hanging above the upper jaw of the first sinker are longer, reserving corresponding unit line lengths for the next round of knitting, enabling smooth combined knitting. The combination of knitting needles and the first sinker, and the combination of multi-section knitting needles on the lower cylinder and the first sinker on the upper dial with sinker cams form a new knitting process technology, which makes the fabric style and loop morphology have a relatively high improvement in physical properties compared with traditional knitted fabrics and can be widely promoted and applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of the reserved loop knitting action of an embodiment of the present invention;

[0033] Figure 2 is a schematic structural diagram of the reserved tuck knitting action of an embodiment of the present invention;

[0034] Figure 3 is a knitting diagram of an embodiment of the present invention;

[0035] Figure 4 is a schematic diagram of the loop structures of the reserved loop knitting and loop knitting in an embodiment of the present invention;

[0036] Figure 5 is a schematic diagram of the loop structures of the reserved tuck knitting and tuck knitting in an embodiment of the present invention;

[0037] Figure 6 is a schematic structural diagram of the first sinker in an embodiment of the present invention;

[0038] Figure 7 is a schematic structural diagram of the second sinker in an embodiment of the present invention;

[0039] Figure 8 is a schematic structural diagram of the third sinker in an embodiment of the present invention.

[0040] Among them, 1 is the first sinker, 2 is the second sinker, 3 is the third sinker, 11 is the first butt track, 12 is the first lower sinker jaw, 13 is the first lower sinker throat, 14 is the first butt, 15 is the first upper sinker jaw, 16 is the first upper sinker throat, 17 is the first nose of the sinker, 18 is the first air flow guiding groove, 19 is the first fin-shaped fluff scraping part, 21 is the second butt track, 22 is the second nose of the sinker, 23 is the second butt, 24 is the sinker jaw, 25 is the second air flow guiding groove, 26 is the second fin-shaped fluff scraping part, 31 is the third butt track, 32 is the second lower sinker jaw, 33 is the second lower sinker throat, 34 is the third butt, 35 is the second upper sinker jaw, 36 is the second upper sinker throat, 37 is the third nose of the sinker, 38 is the third air flow guiding groove, 39 is the third fin-shaped fluff scraping part, 121 is the first wave-shaped curve self-tightening part, 241 is the second wave-shaped curve self-tightening part, 321 is the third wave-shaped curve self-tightening part. Detailed implementation mode

[0041] The present invention will be further described below in conjunction with the accompanying drawings and the detailed implementation mode.

[0042] Refer to Figures 1-8, preferably, the knitting process of the single - jersey circular weft knitting machine of the present invention includes a single - jersey circular weft knitting machine, which includes a sinker cam and corresponding first sinkers 1, second sinkers 2, and third sinkers 3. The first sinker 1 includes a first heel track 11 and a first lower jaw 12 provided at the front end of the first heel track 11. A first lower throat 13 is correspondingly provided on the holding plane of the first lower jaw 12. There is a first heel 14 protruding upward in the middle of the first heel track 11 and cooperating with the sinker cam. Above the front end of the first heel track 11 and located above the first lower jaw 12, there is a first upper jaw 15. A first upper throat 16 is correspondingly provided on the holding plane of the first upper jaw 15. Above the first upper throat 16 is the first nose 17. At the rear end of the first lower jaw 12, there is a first air - flow guiding groove 18 recessed towards the first lower throat 13. At the upper part of the rear end of the first air - flow guiding groove 18, a first fin - shaped floc - scraping part 19 is provided extending towards the first heel track 11 and having a clearance fit with the end face of the sinker cam. Below the inner cavity of the first lower jaw 12 is a first waveform - curve - shaped self - tightening part 121. The second sinker 2 includes a second heel track 21 and a second nose 22 provided at the front end of the second heel track 21. At the rear end of the second heel track 21 of the second sinker 2, there is a second heel 23 protruding upward and cooperating with the sinker cam. Below the inner cavity of the jaw 24 of the second sinker 2 is a second waveform - curve - shaped self - tightening part 241. At the rear end of the second nose 22 of the second sinker, there is a second air - flow guiding groove 25 recessed towards the throat. At the upper part of the rear end of the second air - flow guiding groove 25, a second fin - shaped floc - scraping part 26 is provided extending towards the second heel track 21 and having a clearance fit with the end face of the sinker cam. The third sinker 3 includes a third heel track 31 and a second lower jaw 32 provided at the front end of the third heel track 31. A second lower throat 33 is correspondingly provided on the holding plane of the second lower jaw 32. At the rear end of the third heel track 31, there is a third heel 34 protruding upward and cooperating with the sinker cam. Above the front end of the third heel track 31 and located above the second lower jaw 32, there is a second upper jaw 35. A second upper throat 36 is correspondingly provided on the holding plane of the second upper jaw 35. Above the second upper throat 36 is the third nose 37. At the rear end of the second lower jaw 32, there is a third air - flow guiding groove 38 recessed towards the second lower throat 33. At the upper part of the rear end of the third air - flow guiding groove 38, a third fin - shaped floc - scraping part 39 is provided extending towards the third heel track 31 and having a clearance fit with the end face of the sinker cam. Below the inner cavity of the second lower jaw 32 is a third waveform - curve - shaped self - tightening part 321. Multiple first sinkers 1, multiple second sinkers 2, and multiple third sinkers 3 are arranged in a mixed and alternating manner on the cylinder of the circular weft knitting machine;

[0043] The knitting methods of the single-sided circular weft knitting machine include loop knitting, tuck knitting, and float knitting performed by the sinker cams in cooperation with the first sinker 1, the second sinker 2, or the third sinker 3. The knitting methods of the single-sided circular weft knitting machine also include reserved loop knitting and reserved tuck knitting performed by the sinker cams in cooperation with the first sinker 1 or the third sinker 3;

[0044] The reserved loop knitting includes the following steps:

[0045] S1. Starting from loop knitting, the yarn is fed into the hook of the knitting needle and bent and knitted into a loop with the first lower jaw 12 of the first sinker 1 to form an original loop in the hook of the knitting needle;

[0046] S2. Then, the original loop and the sinker loop in the hook of the knitting needle are held by the first lower throat 13 of the first sinker 1, and the knitting needle rises along the cylinder cam in cooperation with the first heel track 11. At this time, the original loop in the hook of the knitting needle forces the latch to open and slide below the latch to complete the loop withdrawal;

[0047] S3. When the first heel 14 of the first sinker 1 is pushed to the innermost point along the first heel track 11 towards the inner diameter of the cylinder, the knitting needle descends to make the latch flip upward under the action of the original loop;

[0048] S4. The yarn is fed into the hook of the knitting needle and bent with the first upper jaw 15 of the first sinker 1 to form a new loop of a set length. At this time, the original loop is separated on both sides of the latch;

[0049] S5. The knitting needle further descends, and the original loop pushes the latch to close and form a loop. The new loop lays yarn on the first upper jaw 15 of the first sinker 1 to form a new long sinker loop and a stitch arc, completing the reserved loop knitting;

[0050] The reserved tuck knitting includes the following steps:

[0051] S1. Starting from loop knitting, the yarn is fed into the hook of the knitting needle and bent and knitted into a loop with the first lower jaw 12 of the first sinker 1 to form an original loop in the hook of the knitting needle;

[0052] S2. Then, the original loop and the sinker loop in the hook of the knitting needle are held by the first lower throat 13 of the first sinker 1, and the knitting needle rises along the cylinder cam in cooperation with the first heel track 11. At this time, the original loop in the hook of the knitting needle forces the latch to open and slide above the latch. The loop in the previous row of the original loop and below the latch is called the old loop;

[0053] S3. When the first heel 14 of the first sinker 1 is pushed to the innermost point along the first heel track 11 towards the inner diameter of the cylinder, the knitting needle descends to make the latch flip upward under the action of the original loop;

[0054] S4. The yarn is fed into the hook of the knitting needle and bent by the first upper blade jaw 15 of the first sinker 1 to form a new loop of a set length. At this time, the newly fed loop and the original loop are separated on both sides of the needle tongue within the hook of the knitting needle;

[0055] S5. The knitting needle further descends, and the old loop pushes the needle tongue to close and loop. The new loop lays yarn on the first upper blade jaw 15 of the first sinker 1 to form a new long sinker loop and stitch loop, completing the reserved tuck knitting;

[0056] The reserved loop knitting or reserved tuck knitting is carried out during knitting by the first sinker 1 or the third sinker 3 set on the upper plate and the sinker cams making different amplitudes of pushing and non - pushing actions in cooperation to form sinker loops of different lengths.

[0057] Reference Figure 1 , the process of reserved loop knitting can be sequentially decomposed into the following stages: loop withdrawal (A - 1) - sliding the just - formed original loop from the needle hook to below the needle tongue; yarn laying (B - 1) - the first sinker 1 advances towards the center of the needle cylinder to the relative position of the first lower blade jaw and the hook of the knitting needle to feed the yarn onto the knitting needle; yarn carrying (C - 1) - moving the newly laid yarn into the needle hook and contacting the first upper blade jaw 15 of the first sinker 1; closing - closing the needle orifice of the knitting needle; looping (D - 1) - putting the original loop onto the needle hook with the closed needle orifice; linking - the new yarn and the original loop meet inside and outside the needle hook; yarn bending - bending the yarn into the shape of a loop; reserved looping (E - 1) - forming an open and new long sinker loop of a specified size with the new yarn.

[0058] Reference Figure 2 The process of reserved tuck knitting can be sequentially decomposed into the following stages: loop withdrawal (A - 2) - moving the just - formed original loop from the needle hook above the needle tongue; yarn laying (B - 2) - the first sinker 1 advances towards the center of the needle cylinder to the relative position of the first lower blade jaw 12 and the hook of the knitting needle to feed the yarn onto the knitting needle; yarn carrying (C - 2) - moving the newly laid yarn into the needle hook and contacting the first upper blade jaw 15 of the first sinker 1; closing - closing the needle orifice of the knitting needle; looping (D - 2) - putting the original loop onto the needle hook with the closed needle orifice; linking - the new yarn or new loop and the original loop meet inside and outside the needle hook; yarn bending - bending the yarn into the shape of a loop; reserved tucking (E - 2) - forming an open and new long sinker loop of a specified size with the yarn.

[0059] The process of reserved loop knitting and reserved tuck knitting carried out by the sinker cams in cooperation with the third sinker 3 is the same as the process of reserved loop knitting and reserved tuck knitting carried out by the sinker cams in cooperation with the first sinker 1.

[0060] Reference Figure 3, The knitting diagram shows the cooperative relationship between the upper and lower parts of the lower cylinder of the needle cylinder, the knitting needles U and D, and the sinkers on the outer F and inner B surfaces of the upper disk of the needle cylinder: there are 5 actions for the multi-segment knitting needles in the lower cylinder, namely loop formation, pre-loop formation, tuck stitch, pre-tuck stitch, and non-knitting. There are 5 actions for the first sinker 1 or the third sinker 3 on the upper disk, namely F and B do not move, single F moves, single B moves, F and B move, and for closed holding.

[0061] The D knitting needles move along the triangular trajectory curve with actions of a loop formation - b reserved loop formation - c tuck stitch - d reserved tuck stitch - e non-knitting respectively. The F and B sinkers move along the triangular trajectory curve with actions of a single F moves - b single B moves - c F and B move - d for closed holding - e F and B do not move respectively.

[0062] The U knitting needles can set corresponding action combinations according to the knitting process: the combined organization of the arrangement and cam configuration of the D and U knitting needles and the arrangement and cam configuration of the F and B sinkers, as well as the distance between the jaw and throat of the first sinker and the selection of single and double butts are used to meet the fabric design requirements.

[0063] Reference Figure 4 , Coil a is a reserved loop formation coil knitted by the sinker cams in cooperation with the first sinker 1 or the third sinker 3 for reserved loop formation. Coil b is a loop formation coil knitted by the sinker cams in cooperation with the first sinker 1 or the second sinker 2 for loop formation. The two are arranged alternately, and the long sinker loops span one row and are combined with the next coil to form a double-coil structure.

[0064] Reference Figure 5 , Coil c is a reserved tuck stitch coil knitted by the sinker cams in cooperation with the first sinker 1 or the third sinker 3 for reserved tuck stitch. Coil d is a tuck stitch coil knitted by the sinker cams in cooperation with the first sinker 1 or the second sinker 2 for tuck stitch.

[0065] In the above embodiments, the first sinker, the second sinker, and the third sinker provided on the upper plate of the single-sided circular weft knitting machine may also be arranged in other mixed arrangements. An alternating mixed arrangement is more conducive to the control setting of the knitting process. The use setting of the sinkers for realizing the reserved loop knitting and the reserved tuck knitting can be to use only the first sinker or the third sinker alone, that is, only the first sinker or the third sinker is provided on the upper plate; or a mixed arrangement of the first sinker and the second sinker is adopted, or a mixed arrangement of the first sinker and the third sinker is adopted, or a mixed arrangement of the third sinker and the second sinker is adopted, or a mixed arrangement of the first sinker, the second sinker, and the third sinker can be adopted. The first fin-shaped floc-scraping part at the rear of the first air flow guiding groove of the first sinker, the second fin-shaped floc-scraping part at the rear of the second air flow guiding groove of the second sinker, and the third fin-shaped floc-scraping part at the rear of the third air flow guiding groove of the third sinker may not be provided. It is also possible to provide the first fin-shaped floc-scraping part at the rear of the first air flow guiding groove of some or all of the first sinkers according to the requirements of the knitting process; or the second fin-shaped floc-scraping part at the rear of the second air flow guiding groove of some or all of the second sinkers can be provided according to the requirements of the knitting process; or the third fin-shaped floc-scraping part at the rear of the third air flow guiding groove of some or all of the third sinkers can be provided according to the requirements of the knitting process.

[0066] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all of them fall within the protection scope of the present invention.

Claims

1. A sinker for a single-sided circular weft knitting machine, comprising a plurality of first sinkers disposed on the cylinder of the single-sided circular weft knitting machine and corresponding to the sinker cams, characterized in that: The first sinker includes a first heel track and a first lower jaw provided at the front end of the first heel track. A first lower throat is correspondingly provided on the holding plane of the first lower jaw. A first heel that protrudes upward and cooperates with the sinker cam is provided in the middle or at the rear end of the first heel track. A first air flow guiding groove with an asymmetric streamline V-shaped cross-section that faces the first lower throat is provided at the rear end of the first lower jaw. The lower part of the inner cavity of the first lower jaw is a first waveform curve-shaped self-tightening part.

2. The sinker for a single-sided circular weft knitting machine according to claim 1, characterized in that: A first upper jaw is provided above the first lower jaw at the front end of the first heel track. A first upper throat is correspondingly provided on the holding plane of the first upper jaw. Above the first upper throat is a first nose.

3. The sinker for a single-sided circular weft knitting machine according to claim 1, characterized in that: At the upper part of the rear end of the first air flow guiding groove, a first fin-shaped fluff scraping part that is in clearance fit with the end face of the sinker cam extends towards the first heel track.

4. The sinker for single-sided circular weft knitting machines according to claim 1, characterized in that: It further includes a plurality of second sinkers provided on the needle cylinder of the single-sided circular weft knitting machine and corresponding to the sinker cams. The second sinker includes a second heel track and a second nose provided at the front end of the second heel track. A plurality of first sinkers and a plurality of second sinkers are arranged in a mixed manner on the needle cylinder of the circular weft knitting machine.

5. The sinker for single-sided circular weft knitting machines according to claim 4, characterized in that: A plurality of first sinkers and a plurality of second sinkers provided on the needle cylinder of the single-sided circular weft knitting machine are arranged in a mixed and alternating manner.

6. A single - jersey circular knitting machine knitting process using the sinker for the single - jersey circular knitting machine according to claim 1, including a single - jersey circular knitting machine. The knitting methods of the single - jersey circular knitting machine include loop knitting, tuck knitting, and float knitting carried out by the sinker cam cooperating with the first sinker. It is characterized in that: The weaving method of the single-sided circular weft knitting machine further includes a reserved loop knitting in which the sinker cam cooperates with the first sinker. The reserved loop knitting includes the following steps: S1. Starting from loop knitting, the yarn is fed into the hook of the knitting needle and bends the yarn with the first lower jaw of the first sinker to form a loop, and an original loop is formed in the hook of the knitting needle. S2. Then, the original loop and the sinker loop in the hook of the knitting needle are held by the first lower throat of the first sinker, and the knitting needle rises along the needle cylinder cam in cooperation with the first heel track. At this time, the original loop in the hook of the knitting needle forces the latch to open and slides below the latch to complete loop withdrawal. S3. When the first heel of the first sinker is pushed to the innermost point towards the inner diameter of the needle cylinder along the first heel track, the knitting needle descends so that the latch flips upward under the action of the original loop. S4. The yarn is fed into the hook of the knitting needle and bends the yarn with the first upper jaw of the first sinker to form a new loop of a set length. At this time, the original loop is separated on both sides of the latch. S5. The knitting needle further descends, and the original loop pushes the latch to close and form a loop. The new loop lays yarn on the first upper jaw of the first sinker to form a new long sinker loop and a stitch arc, completing the reserved loop knitting.

7. The knitting process of the single-sided circular weft knitting machine according to claim 6, characterized in that: When the reserved loop knitting is carried out, the first sinker provided on the upper plate and the sinker cam cooperate with different amplitudes of pushing and non-pushing actions to carry out knitting to form sinker loops of different lengths.

8. A single-sided circular knitting machine knitting process for the sinker used in the single-sided circular knitting machine according to claim 1, including a single-sided circular knitting machine. The weaving method of the single-sided circular knitting machine includes loop knitting, tuck knitting, and float knitting carried out by the sinker cam cooperating with the first sinker. It is characterized in that: The weaving method of the single-sided circular weft knitting machine further includes a reserved tuck knitting in which the sinker cam cooperates with the first sinker. The reserved tuck knitting includes the following steps: S1. Starting from loop knitting, the yarn is fed into the hook of the knitting needle and bends the yarn with the first lower jaw of the first sinker to form a loop, and an original loop is formed in the hook of the knitting needle. S2. Next, the original loop and the sinker loop in the hook of the knitting needle are held by the first lower throat of the first sinker, and the other knitting needle rises along the cam of the needle cylinder in coordination with the first butt track. At this time, the original loop in the hook of the knitting needle forces the latch to open and slides above the latch. The loop in the upper row of the original loop and below the latch is called the old loop; S3. When the first butt of the first sinker is pushed to the innermost point along the first butt track towards the inner diameter of the needle cylinder, the knitting needle descends to make the latch flip upward under the action of the original loop; S4. The yarn is fed into the hook of the knitting needle and bent by the first upper jaw of the first sinker to form a new loop of a set length. At this time, the fed new loop and the original loop are separated on both sides of the latch in the hook by the old loop; S5. The knitting needle further descends, and the old loop pushes the latch to close and loop the new loop. The new loop is laid on the first upper jaw of the first sinker to form a new long sinker loop and a stitch arc, completing the reserved tuck knitting.

9. The knitting process of the single-sided circular weft knitting machine according to claim 8, characterized in that: The above-mentioned reserved tuck knitting action is carried out by the first sinker and the sinker cam set on the upper plate with different amplitudes of pushing and non-pushing during knitting to form sinker loops of different lengths.

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