Flat knitting machine knitting needle with needle turning piece

Abstract

The invention relates to the field of flat knitting machines, in particular to a flat knitting machine knitting needle with a needle turning piece, which comprises a needle rod, a needle body and the needle turning piece, the needle body is provided with a mounting groove, and the mounting groove is used for arranging a mounting part of the needle turning piece; the needle rod is connected with the needle body, and a containing groove is formed in the needle rod and used for arranging the tip end of the needle turning piece. An arch part is arranged at the tip end of the needle turning piece, a concave part is arranged at the position, corresponding to the arch part, of the needle rod, an opening of a horn-shaped structure is formed in the side, facing the opposite knitting needle, of the arch part and the concave part, and when the arch part is stressed, the side edge of the arch part can be supported by the needle rod. After the scheme is adopted, the loop transfer success rate under the condition of weaving tight loops can be improved.

Description

Technical Field

[0001] The invention relates to the field of flat knitting machines, in particular to a flat knitting machine needle with a needle transfer plate. Background Art

[0002] The computerized flat knitting machine is a double-needle plate latch needle weft knitting loom. Through the machine head and the cam mechanism arranged on the cam bottom plate of the machine head, that is, the cam system, when the machine head reciprocates along the guide rail, the knitting needles arranged in the needle grooves of the needle bed (needle plate) are driven to move up and down along the needle grooves, and the weaving of the fabric is completed with the cooperation of the cam mechanism and the pulling mechanism.

[0003] Among them, the knitting needles include compound needles with separate hooks and latch needles, and ordinary crochet needles with latch needles pivotally connected to the bottom of the hook. In the structure of the latter, a needle transfer piece (circle transfer piece) used for transferring the loop is arranged on the side of the needle body, and its end extends to the needle bar under the hook, and a certain gap is formed between the needle bar, that is, the needle transfer piece is used to expand the loop when the loop is transferred between the front and rear needle beds to facilitate the insertion of the loop receiving needle.

[0004] Referring to the attached figure of CN215404847U, it shows the complete process of transferring the coil. At the same time, in order to solve the problem of excessive opening of one end of the spring sheet (i.e., the needle turning sheet), the spring sheet is designed into a structure in which "the head of the first arc segment and the portion where the first arc segment and the second arc segment are connected are both fitted on the bottom wall of the groove", so as to prevent the problem of easy failure of the spring sheet. Later, it was found that "when the outer protrusion is not working (stationary state), it will still bend outward under the influence of the elastic force of the spring sheet itself, hindering the smooth insertion of the relative knitting needle". Therefore, the applicant designed the outer protrusion that should have been linked with the first arc segment in CN217266261U as "the outer protrusion is fitted on the corner step of the needle handle, and the outer protrusion can block the coil when the needle is turned over and the coil is transferred, so as to prevent the coil from continuing to slide backward along the knitting needle" [paragraph 0029 of the specification].

[0005] However, when the above structure is used to weave relatively tight coils (i.e., the coil diameter is small), the needle plate is subjected to greater pressure from the coil, which makes the gap between the needle plate and the needle bar too small, resulting in the receiving needle (i.e., the knitting needle on the other side) not being easy to penetrate into the working gap, thereby affecting subsequent processing.

[0006] Therefore, the applicant applied for a flat knitting needle structure with a needle transfer plate in "2024228969778", which is provided with a thread stopper at the boundary between the needle body and the needle bar, and in the preferred embodiment, a slope is provided on the side of the thread stopper to maintain a gap between the needle transfer plate and the needle bar for the loop needle to enter.

[0007] Subsequently, during the actual production process, the applicant found that although the above technical solution is superior to the prior art, it still has the following technical problems: Under the pressure of the transfer needle piece at the tight coil wire hanging (i.e., the junction between the needle body and the needle bar), there is still a probability that it cannot enter between the transfer needle piece and the needle bar. And during the process of the reciprocating knitting of numerous knitting needles and the machine head, even a low-probability event will surely occur.

[0008] Therefore, the inventor further studied this and developed a flat knitting machine needle with a transfer needle piece, and this case was thus generated. Summary of the Invention

[0009] The purpose of the present invention is to provide a flat knitting machine needle with a transfer needle piece, which can greatly improve the success rate during the transfer of high-density coils, thereby ensuring the knitting quality of the fabric.

[0010] In order to achieve the above purpose, the technical solution of the present invention is as follows:

[0011] A flat knitting machine needle with a transfer needle piece includes a needle bar, a needle body, and a transfer needle piece.

[0012] The needle body is provided with an installation groove for setting the installation part of the transfer needle piece.

[0013] The needle bar is connected to the needle body, and a receiving groove is provided on the needle bar for setting the tip part of the transfer needle piece.

[0014] The tip part of the transfer needle piece is provided with a raised part, and a recessed part is provided at the position of the needle bar corresponding to the raised part. The raised part and the recessed part form an opening of a horn-shaped structure on the side facing the opposite knitting needle. When the raised part is under pressure, the side of the raised part will be supported by the needle bar.

[0015] The needle body and the needle bar are substantially an integral structure, but in order to block the coil, there is an obvious difference in width at the boundary between the two, forming a wire-blocking part. Therefore, they are respectively defined by their relative widths to illustrate the structure; similarly, for the tip part and the installation part of the transfer needle piece, they are mainly distinguished by their widths.

[0016] From the prior art of the background technology to the prior application of this case, it can be seen that the technical solution of the present invention has matured step by step through continuous production tests, rather than being achieved overnight: First, the quality requirements for knitted fabrics have been continuously improved, which has led to higher requirements for the distribution density of knitting needles and the tightness of coils. With the increase in the distribution density of knitting needles, it is necessary to make the thickness of the knitting needles as thin as possible and the running accuracy higher. And when the coils become tighter, it will affect the thinner knitting needles (transfer needle pieces) and make them more likely to be deformed by the pulling force (pressure) of the coils, thus greatly increasing the difficulty of coil transfer.

[0017] When shifting loops, first, due to the relatively large opening amplitude of the trumpet shape, it is easy to accommodate the opposite knitting needles. Second, since this opening is a semi-closed structure, the pressure on the arched part can be diffused to the periphery and supported by the needle bar, so it is difficult to cause this opening to be flattened.

[0018] Furthermore, an inclined arch is formed at the loop hanging position between the tip end and the mounting part of the purl cam.

[0019] After the needle bed needle plate is set up, the inclination angle of the knitting needle in the working state is fixed. Therefore, the position of the loop waiting to be shifted can also be determined. Thus, the width of the loop sleeved part here is reduced as much as possible. If the loop is sleeved on the arched part, the loop with high tightness will always be in a tense state and unnecessary resistance will be increased.

[0020] Furthermore, an isolation strip is provided between the receiving groove and the recessed part, and the isolation strip supports the tip end of the purl cam.

[0021] The receiving groove can directly extend to the recessed part, which is more convenient for processing. However, when a relatively convex isolation strip is provided between the two, it can further support the arched part of the tip end.

[0022] Furthermore, the upper surface of the isolation strip is flush with the upper surface of the needle bar, and the isolation strip and the needle bar are integrally designed.

[0023] Furthermore, a convex platform is provided at the adjacent vertical side between the needle body and the needle bar, and a slope is provided on the side of the convex platform facing the mounting groove.

[0024] The convex platform is provided here to facilitate the receiving needle to enter the preparation space between the purl cam and the needle body.

[0025] Furthermore, the upper surface of the convex platform is flush with the upper surfaces of the needle body and the needle bar.

[0026] Furthermore, a bending part is provided at the purl cam mounting part corresponding to the convex platform and the mounting groove. The bending part and the convex platform and the needle body form a receiving cavity.

[0027] This bending part protrudes more outwards from the mounting groove than other parts of the purl cam mounting part. That is, the bending part can better cooperate with the convex platform to form a receiving cavity between the bending part and the needle body, preventing the tip end of the purl cam from expanding too much outwards.

[0028] Furthermore, one side of the arched part is in contact with the needle bar without external force.

[0029] After adopting the above scheme, compared with the prior art, the present invention has the following advantages:

[0030] Through continuous experiments and optimizations, the structure of the purl cam is further optimized, thereby ensuring the success rate of loop transfer and improving the knitting quality under the condition of tight coils. Description of the Drawings

[0031] Figure 1 is a schematic diagram of Embodiment 1 of the present invention;

[0032] Figure 1-1 is Figure 1 a partial enlarged view of part A in

[0033] Figure 2 is a schematic diagram of Embodiment 2 of the present invention;

[0034] Figure 3 is a schematic diagram of Embodiment 3 of the present invention;

[0035] Reference Signs Description

[0036] Purl cam 1, tip portion 11, arched portion 111, mounting portion 12, bending portion 121;

[0037] Needle bar 2, receiving groove 21, isolation strip 22;

[0038] Needle body 3, boss 31, recessed portion 4, coil 5. Detailed Embodiments

[0039] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0040] As described in the background art, in this embodiment, the knitting needles all have purl cams. Their basic structure includes a relatively narrow needle bar and a relatively wide needle body. Taking the place where the needle hook at the end of the needle bar is located as the uppermost end, a receiving groove is provided on the side below the needle hook. The receiving groove is used to set the tip portion of the purl cam; the needle body is arranged below the needle bar, and a mounting groove is provided on the needle body for setting the mounting portion of the purl cam.

[0041] Embodiment 1:

[0042] As Figure 1 , 1-1 shown, a flat knitting needle with a purl cam includes a purl cam 1. Among them, the mounting portion 12 of the purl cam 1 is arranged in the mounting groove, and the tip portion 11 of the purl cam 1 is arranged in the receiving groove 21. A recessed portion 4 is also arranged between the receiving groove 21 and the mounting groove. The recessed portion 4 forms an inclined concave slope with a curvature at the junction of the needle bar 2 and the needle body 3. The recessed portion 4 cooperates with the arched portion 111 of the tip portion 11 above it, that is, a horizontally flared structure with one side open and the other side contracted is formed. The open side of the opening faces the opposite knitting needle to receive it and pass through from the contracted opening.

[0043] Since the needle turning piece 1 itself has a certain elasticity, it is preferred that the arched portion 111 of the needle turning piece 1 is inclined through the bell-mouth so that it can contact the needle rod 2 without being subjected to external force, so that the arched portion 111 is supported by the needle rod 2 in a natural state and is less likely to deform.

[0044] At the same time, in this embodiment, the arched portion 111 is inclined and arched from the coil hanging line between the tip portion 11 and the mounting portion 12 of the needle turning piece 1, that is, the position of the coil hanging here is contracted relative to the parts on both sides. When the coil is relatively tight, the coil 5 will not be always in a stretched state, and the closing pressure on the needle turning piece 1 can be reduced.

[0045] In this embodiment, the tip portion 11 may also be equivalent to the arched portion 111 .

[0046] Embodiment 2:

[0047] like Figure 2 As shown, compared with the first embodiment, an isolation belt 22 is further provided between the accommodating groove 21 and the recessed portion 4 in this embodiment, and the isolation belt 22 is located below the arched portion 111, and its upper surface is consistent with the upper surface of the needle rod 2, and the isolation belt 22 and the needle rod 2 are of an integral design; the isolation belt 22 further plays a supporting role and can better maintain the shape of the arched portion 111.

[0048] Embodiment three:

[0049] like Figure 3 As shown, in this embodiment, a boss 31 is provided on the adjacent vertical edge between the needle body 3 and the needle rod 2, a slope is provided on the side of the boss 31 facing the mounting groove, a bending portion 121 is provided above the slope, and the bending portion, the boss 31, and the needle body 3 form an accommodating cavity, which facilitates the loop needle to enter from the arched portion 111 into between the needle turning piece 1 and the needle body 3.

[0050] The upper surface of the boss 31 here is consistent with the upper surfaces of the needle body 3 and the needle rod 2, and can support the bent portion 121, so that the accommodating cavity is closed without pressure, resulting in excessive clamping force on the loop needle.

[0051] The above are only specific embodiments of the present invention. At the same time, all words such as "upper, lower, left, right, middle" involved in the present invention are for reference only and are not absolute limitations. Any non-substantial changes made using the present invention shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A flat knitting machine needle with a needle transfer plate, comprising a needle bar, a needle body, and a needle transfer plate. The needle body is provided with an installation groove, and the installation groove is used to set the installation part of the needle turning piece; The needle bar is connected to the needle body, and a receiving groove is provided on the needle bar, and the receiving groove is used to set the tip of the needle turning piece; the characteristics are: The tip of the needle turning piece is provided with an arched portion, and a recessed portion is provided at a position corresponding to the arched portion of the needle rod. The arched portion and the recessed portion form an opening of a trumpet-shaped structure on the side facing the opposite knitting needle. When the arched portion is subjected to pressure, the side of the arched portion will be supported by the needle rod.

2. A flat knitting machine needle with a transfer plate according to claim 1, characterized in that: The arched portion is provided with an inclined arch from the coil hanging line position between the tip of the needle turning piece and the mounting portion.

3. A flat knitting machine needle with a needle transfer plate according to claim 1, characterized in that: An isolation belt is arranged between the accommodating groove and the recessed portion, and the isolation belt plays a supporting role on the tip of the needle turning piece.

4. A flat knitting machine needle with a transfer plate according to claim 3, characterized in that: The upper surface of the isolation belt is consistent with the upper surface of the needle bar, and the isolation belt and the needle bar are designed as an integrated unit.

5. A flat knitting machine needle with a transfer plate according to claim 1, characterized in that: A boss is arranged on the adjacent vertical sides between the needle body and the needle rod, and a slope is arranged on the side of the boss facing the mounting groove.

6. A flat knitting machine needle with a transfer plate according to claim 5, characterized in that: The upper surface of the boss is consistent with the upper surfaces of the needle body and the needle rod.

7. A flat knitting machine needle with a transfer plate according to claim 5, characterized in that: A bending portion is provided on the needle turning piece mounting portion corresponding to the boss and the mounting groove.

8. A flat knitting machine needle with a transfer plate according to claim 1, characterized in that: One side of the arched portion is in contact with the needle rod without being subjected to external force.

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