A mother and daughter knitting needle

Abstract

The present application relates to the field of textile machinery, in particular to a kind of child and mother knitting needle for circular weft knitting machine, including child needle and mother needle, wherein the mother needle includes first needle bar, needle heel and first needle hook, the child needle includes second needle bar, second needle hook, the needle heel is fixedly connected with the first hook needle and has connecting lug, the other end of the connecting lug is movably connected with the second needle bar, the connecting lug can move along the length direction of the second needle bar, the second needle bar is provided with limiting piece for limiting the movement range of the connecting lug.The present application first proposes a kind of double needle system knitting needle, which can widen the effect of only widening needle hook width, slow down the yarn feeding angle of needle hook, solve the problem that the weft knitting machine with thick needle or ordinary fine needle spacing cannot complete the weaving of relatively thin yarn and more suitable for rigid high-performance fiber industrial fabric, and effectively reduce the defect rate and equipment failure rate of the yarn weaving, improve production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of textile machinery, in particular to a kind of primary-secondary knitting needle for circular weft knitting machine. BACKGROUND

[0002] The formation of weft knitted fabric needs the help of knitting needle and other related machine parts in knitting machine, and knitting needle plays an important role in loop formation process.The commonly used knitting needle is divided into latch needle, compound needle and hook needle, but the knitting needle in the prior art is single needle, and when knitting high-performance yarn such as polyimide, glass fiber and carbon fiber with large rigidity and thin yarn, the yarn is easily damaged due to the dense needle spacing and steep yarn feeding angle, and the knitting needle is easily broken, resulting in high equipment failure rate and product defect rate, and affecting production efficiency. SUMMARY

[0003] To solve the above technical problems, the present application provides a kind of primary-secondary knitting needle, which can control single needle work or double needle work through double needle system, and when double needle work, yarn feeding angle can be slowed down, thereby reducing the problem of high defect rate and high equipment failure rate of high-performance thin yarn knitting.

[0004] A kind of primary-secondary knitting needle, comprising a primary needle and a secondary needle, wherein the secondary needle comprises a first needle stem, a needle butt and a first needle hook, the primary needle comprises a second needle stem and a second needle hook, a connecting lug is fixedly connected between the needle butt and the first hook needle, one end of the connecting lug is movably connected with the second needle stem, the connecting lug can move along the length direction of the second needle stem, and a limiting piece for limiting the movement range of the connecting lug is arranged on the second needle stem.

[0005] Further, the connecting lug is integrally connected with the first needle stem.

[0006] Further, a primary needle connecting buckle is arranged on the second needle stem, a first limiting piece and a second limiting piece protruding from the upper end and the lower end of the primary needle connecting buckle respectively, and the primary needle connecting buckle is in the form of inverted concave groove.

[0007] Further, one end of the connecting lug connected with the second needle stem is matched in size with the primary needle connecting buckle and can move along the primary needle connecting buckle.

[0008] Further, when the connecting lug contacts with the second limiting piece at the lower end of the primary needle connecting buckle, the top of the first needle hook and the second needle hook is flush, and when the connecting lug contacts with the first limiting piece at the upper end of the primary needle connecting buckle, the top of the first needle hook is 3.5mm higher than the top of the second needle hook.

[0009] Further, the female needle is a latch needle, further comprising a first needle latch and a first needle latch pin connecting the first needle latch and the first needle hook and enabling the first needle latch to rotate.

[0010] Further, the female needle is a latch needle, further comprising a first needle latch and a first needle latch pin connecting the first needle latch and the first needle hook and enabling the first needle latch to rotate.

[0011] Further, the female needle and the male needle are both hook needles.

[0012] Compared with the prior art, the present application has the following beneficial effects:

[0013] 1The present application proposes a double-needle system needle, which can widen the needle hook width, slow down the yarn feeding angle of the hook needle, solve the problem that the weft knitting machine with thick needles or ordinary thin needles cannot knit relatively thin rigid yarns to better knit the industrial fabrics of high-performance fibers with large rigidity, effectively reduce the defect rate and equipment failure rate of the knitting of such yarns, and improve the production efficiency.

[0014] 2The structure of the movably connected male needle and the connecting ear enables the male and female needles to control the simultaneous needle feeding of the male and female needles or the needle feeding of only the female needle by adjusting the needle feeding mode of the cam base, thereby obtaining two knitting modes and being applicable to different specifications of yarns.

[0015] 3When the male and female needles work simultaneously, they are applicable to high-performance yarns with relatively large rigidity and relatively thin yarns, such as polyimide, glass fiber, carbon fiber, etc., so that the yarn feeding angle is relatively gentle, the damage to the yarn and the needle can be reduced, and the relatively thin high-performance fibers can be smoothly knitted. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the male and female needles according to the embodiment of the present application.

[0017] Figure 2 It is another state structure schematic view of the male and female needles according to the embodiment of the present application.

[0018] Figure 3 It is a top view structure schematic view of the male and female needles according to the embodiment of the present application.

[0019] Figure 4 It is a male needle connecting buckle structure schematic view of the male needle according to the embodiment of the present application.

[0020] Figure 5 It is a structure schematic view of the cam base according to the embodiment of the present application.

[0021] Figure 6This is a schematic diagram showing the state of the mother-daughter knitting needle and the triangular base according to Embodiment 3 of the present invention;

[0022] Figure 7 This is a schematic diagram showing the state of the mother-daughter knitting needle and the triangular base according to Embodiment 4 of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the mother and daughter knitting needles during the knitting process according to an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of weaving according to an embodiment of the present invention.

[0025] Mother needle 1, first needle bar 10, needle heel 11, first needle hook 12, daughter needle 2, second needle bar 20, daughter needle connecting buckle 200, first limiting piece 201, second limiting piece 202, second needle hook 21, connecting ear 3. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings.

[0027] Example 1

[0028] like Figures 1-3 As shown, this embodiment proposes a mother-daughter knitting needle, including a daughter needle 2 and a mother needle 1. The mother needle 1 includes a first needle bar 10, a needle heel 11, and a first needle hook 12. The daughter needle 2 includes a second needle bar 20 and a second needle hook 21. A connecting ear 3 is fixedly connected between the needle heel 11 and the first hook 12. The other end of the connecting ear 3 is movably connected to the second needle bar 20. The connecting ear 3 can move along the length direction of the second needle bar 20. A limiting member is provided on the second needle bar 20 to limit the movement range of the connecting ear 3.

[0029] In a preferred embodiment, the connecting ear is integrally connected to the first needle bar.

[0030] The double needle head of the mother-and-child knitting needle can effectively widen only the width of the needle hook, reduce the yarn feeding angle, and solve the problem that weft knitting machines with coarse needles or ordinary fine needle pitch cannot knit finer yarns and industrial fabrics that are more suitable for high-performance fibers with high rigidity. It also effectively reduces the defect rate and equipment failure rate of such yarn knitting and improves production efficiency.

[0031] Example 2

[0032] This embodiment proposes a connection structure between the sub-pin 2 and the connecting ear 3, such as... Figure 4As shown, the second needle bar 20 is provided with a sub-needle connecting buckle 200, the upper end and the lower end of the sub-needle connecting buckle 200 are respectively provided with a protruding first limiting piece 201 and a second limiting piece 202, and the sub-needle connecting buckle 200 is in a whole inverted concave groove structure. One end of the connecting lug 3 connected with the second needle bar 20 is in size matching with the sub-needle connecting buckle 200 and is movable along the length direction of the sub-needle connecting buckle 200.

[0033] Embodiment 3

[0034] This embodiment exemplarily shows the state that the sub-needle 2 and the mother needle 1 of the sub-mother needle structure of the above-mentioned embodiment participate in knitting at the same time, and the sub-mother needle is applied to a single-sided circular weft knitting machine, and can adopt a cam base structure as shown in Figure 5 As shown, when the needle butt 11 is located at the highest point of the track of the cam base, the connecting lug 3 is in contact with the first limiting piece 201, at this time, the height difference of the top of the sub-needle 2 and the mother needle 1 is the largest, which is 3.5 mm, and at this time, the lower edge of the second needle hook 21 of the sub-needle 2 is 0.5 mm higher than the needle cylinder, and the lower edge of the first needle hook 12 of the mother needle 1 is 4 mm higher than the needle cylinder, so that the sub-needle and the mother needle can both take the yarn, so as to realize the simultaneous knitting of the sub-needle and the mother needle. Figure 6

[0035] Embodiment 4

[0036] This embodiment exemplarily shows the state that only the mother needle 1 participates in knitting in the sub-mother needle of the above-mentioned embodiment, and the relationship between the sub-needle 2 and the mother needle 1 and the cam base is as shown in Figure 7 As shown, when the needle butt 11 is located at the highest point of the track of the cam base, the connecting lug 3 is in contact with the first limiting piece 201, at this time, the height difference of the top of the sub-needle 2 and the mother needle 1 is the largest, which is 3.5 mm, and at this time, the lower edge of the second needle hook 21 of the sub-needle 2 is 0.5 mm higher than the needle cylinder, and the lower edge of the first needle hook 12 of the mother needle 1 is 4 mm higher than the needle cylinder, so that the sub-needle and the mother needle can both take the yarn, so as to realize the simultaneous knitting of the sub-needle and the mother needle.

[0037] The knitting states of the sub-needle and the mother needle of the above-mentioned embodiment can be realized by adjusting the cam track of the cam base, so that the knitting structure that the letter needle is simultaneously knitted and only the mother needle is knitted in different knitting paths of the same fabric can also be realized.

[0038] The state structure of the sub-needle and the mother needle in the knitting process is exemplarily shown as follows. Figure 8 ​As shown, when the needle butt 11 is located at the highest point of the track of the cam, the connecting ear 3 contacts the first limiting member 201, at this time, the height difference between the top of the sub-needle 2 and the top of the mother needle 1 is 3.5mm, and the lower edge of the second needle hook 21 of the sub-needle 2 is 0.8mm lower than the needle cylinder, and the lower edge of the first needle hook 12 of the mother needle 1 is 2.7mm higher than the needle cylinder, then in the next action, the needle butt 11 of the mother needle 1 descends along the triangular track in the cam, and the sub-needle 2 remains unchanged in height, until the mother needle descends 3.5mm, the connecting ear contacts the second limiting member 202 and drives the sub-needle to continue to move.

[0039] As shown, the knitting process when both the sub-needle and the mother needle participate in knitting is exemplarily shown. Figure 9

[0040] When the lifting cam is adjusted to the position where both the sub-needle 2 and the mother needle 1 are out of the loop, that is, the lower edges of the needle hooks of the sub-needle 2 and the mother needle 1 are both higher than the needle cylinder, the state can be referred to Figure 6 At this time, the sub-needle 2 is in the lifting position in the knitting process, and the yarn is fed together with the mother needle 1, so that the yarn is taken at the same time, realizing the effect of simultaneous knitting, when the connecting ear 3 moves downward along the sub-needle connecting buckle 200 to contact the second limiting member 202, the sub-needle and the mother needle move downward at the same time, at this time, the needle hooks of the sub-needle 2 and the mother needle 1 are at the same height, and participate in the subsequent knitting action together.

[0041] Then, compared with the looping process of the latch needle in the prior art, the feeding angle of the needle hook can be more gentle without changing the original needle pitch.

[0042] As a preferred mode, in the above embodiment, the mother needle 1 is a latch needle, further comprising a first needle tongue and a first needle tongue pin connecting the first needle tongue and the first needle hook 12 and enabling the first needle tongue to rotate; the sub-needle 2 is a latch needle, further comprising a second needle tongue and a second needle tongue pin connecting the second needle tongue and the second needle hook 21 and enabling the second needle tongue to rotate.

[0043] As a preferred mode, in the above embodiment, the sub-needle 2 and the mother needle 1 are both hook needles.

[0044] It should be noted that in the description of the present application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience and simplification of describing the present application, and is not intended to indicate or imply that the shown device or element must have a particular orientation or positional relationship, therefore it cannot be understood as a limitation on the present application. In the present application, "connection" should be understood as a broad connection, for example, it can be mechanical connection, electrical connection or connection between elements, which can be direct connection or indirect connection through a medium. For those skilled in the art, the meaning of the above terms in the present application can be understood according to the actual situation. ​

[0045] The foregoing merely illustrates the principles of the application and application of its leading features. This application is not limited to the illustrative embodiments described but is capable of being practiced with modification within the spirit and scope of the application in the appended claims. Therefore, specific embodiments are not to be interpreted as limiting the scope of the application, as the claims can include all patentably similar changes and equivalents thereof. Any drawings are intended to be for illustrative purposes only and should not be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although the description herein is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description herein is made only for the sake of clarity, and those skilled in the art should understand the description as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mother-daughter needle characterized in that: The female needle comprises a first needle stem, a needle butt and a first needle hook, and the male needle comprises a second needle stem and a second needle hook, a connecting lug is fixedly connected between the needle butt and the first needle hook, one end of the connecting lug is movably connected with the second needle stem, the connecting lug can move along the length direction of the second needle stem, and a limiting piece is arranged on the second needle stem to limit the moving range of the connecting lug; The second needle stem is provided with a male needle connecting buckle, the upper end and the lower end of the male needle connecting buckle are respectively provided with a first limiting piece and a second limiting piece in the form of protrusions, one end of the connecting lug connected with the second needle stem is matched in size with the male needle connecting buckle and can move along the male needle connecting buckle, when the connecting lug is in contact with the second limiting piece at the lower end of the male needle connecting buckle, the top of the first needle hook is flush with the top of the second needle hook, and when the connecting lug is in contact with the first limiting piece at the upper end of the male needle connecting buckle, the top of the first needle hook is 3.5 mm higher than the top of the second needle hook, the female needle is a tongue needle, further comprises a first needle tongue and a first needle tongue pin for connecting the first needle tongue with the first needle hook and enabling the first needle tongue to rotate, and the male needle is also a tongue needle, further comprises a second needle tongue and a second needle tongue pin for connecting the second needle tongue with the second needle hook and enabling the second needle tongue to rotate.

2. A mother-daughter needle according to claim 1, characterized in that: The connecting lug is integrally connected with the first needle stem.

3. A mother-daughter needle according to claim 1, wherein: The male needle connecting buckle has an overall inverted concave groove structure.

4. A mother-daughter needle according to claim 1 or 2, characterised in that: The male needle and the female needle are replaced by hook needles.

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