Sinker of flat knitting machine

Abstract

The utility model relates to the field of flat knitting machines, in particular to a flat knitting machine sinker which comprises a needle butt part, a thread pressing part, a rotating part and a connecting part, the rotating part is arranged below the connecting part, and the needle butt part and the thread pressing part are arranged on the two sides of the connecting part. The bottom of the rotating part is a rotating arc, the top of the connecting part is a limiting arc, and the circle centers of the rotating arc and the limiting arc coincide. After the scheme is adopted, the device has the advantages of simple structure, more stable operation and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of flat knitting machines, in particular to a flat knitting machine sinker. BACKGROUND

[0002] The sinker is a kind of accessory for flat knitting machine, when used on double needle bed of computer flat knitting machine, it is unfolded along needle bed mouth part, and distributed in the knitting area of needle bed mouth part, by arranging sinker beside each needle, sinker is arranged on spacer, and isolated by spacer, sinker controls old loop and new yarn on each needle, assists needle to drop loop, and can be rotated relative to needle bed mouth to open, to make loop.

[0003] The sinker is generally arranged between needles on the needle bed of the flat knitting machine, and swings around the needle plate hole side near the needle bed as a fulcrum to displace, and the cam mechanism arranged on the slide is used to drive the push piece to drive the needle heel part (also called driving part) of the sinker to enter or exit the needle plate hole.

[0004] The sinker does not have an industry-wide standard, so under the premise of having basic functions, it has various structures according to the design ideas of technicians and the different functions required, such as the sinker with a relatively square overall shape involved in WO2022248143A1 Groz-Beckert Company, the sinker with a return spring involved in CN218507988U Shimazu Machine Company, and the relatively wide sinker involved in CN202298045U and CN202227057U of Ningbo Cixing Company. Among them, the applicant made improvements to a series of sinkers of Shimazu Machine in CN115573088A (Comparative Document 1), but the sinker is complex to process and inconvenient to disassemble and maintain.

[0005] Therefore, the present inventors have developed a flat knitting machine sinker according to actual needs, and the present case is thus generated. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a flat knitting machine sinker with a more stable operation structure and convenient disassembly.

[0007] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0008] A flat knitting machine sinker, comprising a needle heel part, a presser part, a rotating part, and a connecting part, the rotating part is arranged below the connecting part, and the needle heel part and the presser part are arranged on both sides of the connecting part; the bottom of the rotating part is a rotating arc, the top of the connecting part is a limiting arc, and the centers of the rotating arc and the limiting arc coincide.

[0009] In the above technical solution, the needle butt part and the line pressing part can be designed conventionally, the needle butt part is driven by power to swing the sinker, and the line pressing part acts on the yarn, and the specific structure thereof can be determined according to requirements.

[0010] The rotating part is the 'pivot point' of the whole sinker, and the specific structure of each sinker is different, which causes the position and shape of the 'pivot point' to be different, and in the concept of the present case, it is close to a whole circle (a part of which overlaps the connecting part);

[0011] The connecting part is located between the above-mentioned parts, as mentioned in the background art, the connecting part is provided with a buffer spring above, and a feeler gauge above the buffer spring, and the feeler gauge is used to assist in positioning the sinker; and in the concept of the present case, the top of the connecting part is arc-shaped, and the arc bottom of the rotating part shares the same center as the arc top of the connecting part, that is, when the needle butt is driven to swing, the top of the connecting part will be limited by the feeler gauge, but since the arc bottom of the rotating part (the rotating arc) and the arc top of the connecting part (the limiting arc) share the same center, the phenomenon of being stuck will not occur; and based on this structure, it is more convenient to install and dismount the sinker;

[0012] The aforementioned 'top' and 'bottom' are referred to the state of the sinker when it is working.

[0013] Further, the radius r corresponding to the rotating arc is smaller than the radius R corresponding to the limiting arc, and the ratio of R:r is in the range of 1.5-3:1.

[0014] Further, the angle corresponding to the rotating arc is greater than or equal to 200°.

[0015] Further, the angle corresponding to the limiting arc is less than or equal to 80°.

[0016] Further, a straight edge is included between the line pressing part and the rotating part.

[0017] The straight edge is used to limit the pressing amplitude of the line pressing part in cooperation with the needle bed.

[0018] Further, the outer arc edge of the line pressing part is provided with a line pressing groove.

[0019] The line pressing groove is a key structure of the line pressing part for acting on the yarn.

[0020] After the above-mentioned scheme is adopted, the present case has the following advantages compared with the prior art:

[0021] The arc edges of the rotating part and the connecting part belong to the same center, and the needle butt part and the line pressing part are arranged on both sides of the connecting part, so that the sinker runs more stably when it swings, and the phenomenon of the connecting part being stuck will not occur. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of an embodiment of the present case.

[0023] Figure 2 is a schematic diagram of the rotating arc radius r and the limiting arc radius R;

[0024] Label explanation

[0025] Rotating part 1, rotating arc 11, connecting part 2, limiting arc 21, flat edge 22,

[0026] Needle butt part 3, line pressing part 4, line pressing groove 41. DETAILED DESCRIPTION

[0027] The utility model will be further explained in combination with the drawings and specific embodiments.

[0028] As Figure 1 shown, a flat knitting machine sinker includes needle butt part 3, line pressing part 4, rotating part 1, connecting part, the above-mentioned parts do not have obvious boundary, only line pressing part 4 needs to move between knitting needles, therefore line pressing part 4 and connecting part 2 form a step structure, for avoiding knitting needles, the structure is described in the background art mentioned comparative document 1, which will not be expanded here.

[0029] In the orientation in the drawing, needle butt part 3 is located at the right side, can make sinker force drive and swing, line pressing part 4 is located at the left side, for the yarn action, rotating part 1 is located below, when needle butt part 3 is stressed, it is with rotating part 1 as the pivot swing, and connecting part 2 is between needle butt part 3, line pressing part 4, rotating part 1.

[0030] In the above-mentioned parts, line pressing part 4, needle butt part 3 only need to play its basic function, needle butt part 3 has the structure that can be driven, the outside arc edge of line pressing part 4 has line pressing groove 41 for pressing line, the bottom of the connecting part between line pressing part 4 and rotating part is flat edge 22, flat edge 22 is used to limit the depression amplitude of line pressing part 4.

[0031] The focus of the embodiment is that the rotating arc 11 of the bottom of rotating part 1 and the limiting arc 21 of the top of connecting part 2 share a center, as Figure 2 shown, the radii of the two arc segments are marked as r and R, taking the proportion in the drawing as reference, R:r is about 2.4:1, and the angle corresponding to rotating arc 11 is about 255 °, the angle corresponding to limiting arc 21 is about 60 °, because the radius of rotating arc 11 is small, the rotation angle is large, and the radius of limiting arc 21 is large, the swing angle is small, and both are the same center, so as long as the sinker is not blocked by external components such as a feeler gauge during assembly, the limiting arc 21 will not be blocked during work, and the above-mentioned overall structure is more balanced and stable compared with the prior art, and is also more convenient to disassemble.

[0032] The above is only the specific embodiment of the present application, meanwhile, the words such as "upper", "lower", "left", "right", "middle" and the like involved in the present application are only for reference, not absolute limitation, and any non-substantial change made by using the present application shall belong to the behavior of infringing the protection scope of the present application.

Claims

1. A sinker for a flat knitting machine, characterised in that: The needle butt part, the line pressing part, the rotating part and the connecting part are included, the rotating part is arranged below the connecting part, the needle butt part and the line pressing part are arranged on both sides of the connecting part; the bottom of the rotating part is a rotating arc, the top of the connecting part is a limiting arc, and the centers of the rotating arc and the limiting arc coincide.

2. A sinker for a flat knitting machine according to claim 1, wherein: The radius r corresponding to the rotating arc is smaller than the radius R corresponding to the limiting arc, and the ratio of R:r is in the range of 1.5-3:

1.

3. A sinker for a flat knitting machine according to claim 1, wherein: The angle corresponding to the rotating arc is greater than or equal to 200°.

4. A sinker for a flat knitting machine according to claim 1, wherein: The angle corresponding to the limiting arc is less than or equal to 80°.

5. A sinker for a flat knitting machine according to claim 1, wherein: A straight edge is included between the line pressing part and the rotating part.

6. A sinker for a flat knitting machine according to claim 1, wherein: The outer arc edge of the line pressing part is provided with a line pressing groove.

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