Needle withdrawing and looping triangle of double-sided circular knitting machine, needle-containing tucking triangle and double-sided circular knitting machine
By optimizing the needle track design, the problem of poor adaptability of traditional triangular knitting has been solved, resulting in reduced noise, extended needle life, and improved fabric quality. It is suitable for producing 1350 grade fabrics with specific complex weaving effects.
Patent Information
- Application Number
- CN202511869833.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-01-27
AI Technical Summary
Traditional triangular working faces have a fixed angle, making it difficult to adapt to the requirements of different yarns, different weave structures, or different fabric styles, resulting in severe noise, short needle life, and poor fabric quality.
The design incorporates novel needle exit loop triangles and needle containment loop triangles. By adjusting the needle track height, take-off groove position, and buffer zone width, the needle movement trajectory is optimized, friction and impact are reduced, and stability and uniformity are improved.
Reduce noise, extend needle life, improve fabric quality and loop uniformity, achieve stable control of complex needle movements, and produce 1350 grade fabric with smooth texture and fluffy feel.
Smart Images
Figure CN121407299A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the textile field, and more particularly to a double-sided circular knitting machine with needle-out loop forming triangles, needle-in-loop forming triangles, and double-sided circular knitting machine. Background Technology
[0002] The circular knitting machine, also known as a circular weft knitting machine, uses the cam as its core component. The cam is also called a mountain corner or diamond corner. It controls the reciprocating motion of the needles and sinkers within the cylinder groove, according to the different knitting patterns required. There are five types of cams: loop cams (full needle cams), tuck cams (half needle cams), float cams (plain needle cams), anti-slip cams (full stitch cams), and insert cams (sampling cams).
[0003] The triangular loop formation process is a core step in knitting production where loops are interlocked using knitting needles. This process includes basic steps such as loop unwinding, yarn padding, and yarn bending. Among these, the loop formation using the latch needle requires the alternation of old and new loops through the raising and lowering of the needle bar and the closing of the latch.
[0004] Tuck stitching, a key technique in knitted fabric weaves, works by keeping the old loops in place without removing or unwinding them, while simultaneously weaving new loops, thus interweaving the old and new loops together to create a specific weave structure.
[0005] The old design of the looping triangle used by our company includes an inlet groove, an ascending groove, a first descending groove, a transition groove, a second descending groove, a V-shaped return groove, and an exit groove; it is mainly used for the production of fabrics of type 1350. We have encountered the following problems during the use of this looping triangle:
[0006] 1. The traditional triangular working face has a fixed angle, which makes it difficult to adapt to the requirements of different yarns, different weave structures or different fabric styles; it is also difficult to achieve certain special and complex needle movement trajectories or weaving effects.
[0007] 2. The impact force is large when the working surface of the triangular running track contacts the heel of the knitting needle, resulting in severe noise, which affects the high-speed and stable operation of the machine and the life of the knitting needle.
[0008] 3. Inadequate design leads to unstable speed changes in the knitting needles during loop formation, affecting loop uniformity and fabric quality. Summary of the Invention
[0009] The purpose of this invention is to provide a double-sided circular knitting machine needle forming triangle. This forming triangle reduces the impact and vibration of the needle movement by increasing the track height, reducing the height of the V-shaped take-off point, and extending the length of the take-off groove. This reduces noise, extends the life of the needle and triangle, optimizes the needle movement trajectory, especially the speed curve of key points, improves the fabric quality and loop uniformity, and achieves specific and complex needle movement control.
[0010] Meanwhile, the present invention also provides a needle-containing loop triangle, which reduces the friction between the needle heel and the working surface of the exit triangle by moving the needle running track of the horizontal groove forward by 1.2 mm and increasing the width of the horizontal buffer zone of the take-off groove by 1.2 mm, thereby increasing the running stability of the needle, reducing the impact and vibration generated during the running of the needle, and improving the flatness and uniformity of the loop.
[0011] Finally, the present invention also provides a large circular knitting machine based on three core components: a needle-out looping triangle, a needle-containing looping triangle, and a floating thread triangle, for producing fabric of type 1350, which has the advantages of smooth weave and fluffy and comfortable hand feel.
[0012] To achieve the above objectives, this application discloses a double-sided circular knitting machine with a needle-forming triangle, including a first triangle body, on which a first needle-feeding groove is provided; the first needle-feeding groove is composed of a first needle-in groove, a first rising groove, a first falling groove, a first transition groove, a second falling groove, a first V-shaped needle-receiving groove, and a first needle-out groove connected in sequence.
[0013] The height of the first triangular body is 24mm. The first rising groove and the first falling groove form the apex of the first needle feeding groove. The distance between the apex and the upper edge of the first triangular body is 2.18mm. The distance between the first V-shaped needle receiving groove and the lower edge of the first triangular body is 2.88mm. The length of the first needle exiting groove is 4mm.
[0014] In the aforementioned double-sided large circular knitting machine needle-forming triangle, the included angle between the first rising groove and the first descending groove is 80°; the included angle between the first rising groove and the horizontal plane is 130°; the included angle between the first descending groove and the horizontal plane is 130°; the included angle between the second descending groove and the horizontal plane is 130°; the width of the first rising groove is 2.61mm; the width of the first descending groove is 2.61mm; the width of the second descending groove is 2.3mm; the width of the first V-shaped needle-receiving groove is 2.3mm; the width of the first needle-exiting groove is 3.4mm; and the distance between the upper edge of the first needle-exiting groove and the upper edge of the first triangular body is 17.75mm.
[0015] In the aforementioned double-sided circular knitting machine with a needle-forming triangle, the width of the first triangle body is 37.33mm, the side of the first triangle body with the first needle inlet groove is the needle inlet side; the first triangle body has a needle outlet side; the distance from the vertex to the needle inlet side is 15.81mm; the distance from the starting end of the second descending groove to the needle outlet side is 14.52mm; and the horizontal length of the first descending groove is 5.25mm.
[0016] Meanwhile, the present invention also discloses a double-sided large circular knitting machine with a needle-collecting triangle, including a second triangle body, the second triangle body being provided with a second needle-feeding groove; the second needle-feeding groove is composed of a second needle-inlet groove, a second rising groove, a second horizontal groove, a third descending groove, and a second needle-outlet groove connected in sequence;
[0017] The second triangular body has a width of 37.33 mm and a height of 24 mm. The side of the second triangular body with the second needle inlet groove is the needle inlet side. The second triangular body has a needle outlet side. The distance from the end of the second horizontal groove to the needle outlet side is 14.52 mm. The length of the second horizontal groove is 12.6 mm. The length of the second needle outlet groove is 8.7 mm.
[0018] In the aforementioned double-sided large circular knitting machine with needle-gathering triangle, the width of the second rising groove is 2.55mm; the angle between the second rising groove and the horizontal plane is 132°; the horizontal length of the second rising groove is 5.2mm; the width of the third descending groove is 2.3mm; the angle between the third descending groove and the horizontal plane is 123°; the horizontal length of the third descending groove is 7.0mm; the width of the second needle-out groove is 3.1mm; the height of the second triangle body is 24mm; and the distance between the upper edge of the second horizontal groove and the upper edge of the second triangle body is 8.9mm.
[0019] Finally, the present invention also discloses a large circular knitting machine, including the needle-out looping triangle as described above, the needle-containing looping triangle as described above, and the floating thread triangle.
[0020] In the aforementioned large circular knitting machine, the floating line triangle includes a third triangle body, and the third triangle body is provided with a third needle feed groove; the third needle feed groove is composed of a third needle inlet groove, a third horizontal groove, a fourth horizontal groove, and a fourth needle outlet groove connected in sequence;
[0021] The distance between the upper edge of the third horizontal groove and the upper edge of the third triangular body is 15.9 mm, and the distance between the upper edge of the fourth horizontal groove and the upper edge of the third triangular body is 15.0 mm. The width of both the third and fourth horizontal grooves is 3.3 mm.
[0022] In the aforementioned large circular knitting machine, the width of the third triangular body is 37.33 mm.
[0023] The present invention has the following advantages and effects compared with the prior art:
[0024] I. For the triangular shape formed by the needle exiting the loop, its advantages are:
[0025] 1. The present invention expands the needle running track (raising the apex of the first rising groove upward by 0.8mm) to reduce the friction between the needle heel and the working surface of the triangular track;
[0026] 2. The transverse buffer zone at the take-off point of the present invention (the lowest point of the first V-shaped take-off groove is lowered by 0.8mm, and the first exit groove is extended by 0.8mm) increases the running stability of the knitting needle;
[0027] 3. This invention reduces the impact and vibration generated during the operation of the knitting needles;
[0028] 4. This invention improves the flatness and uniformity of the coil.
[0029] II. For triangle patterns involving needles and curls, its advantages are:
[0030] 1. The present invention moves the needle running track forward by 1.2 mm to optimize the needle bar running track and reduce the friction between the needle heel and the working surface of the triangular track.
[0031] 2. This invention adds a 1.2mm horizontal buffer zone at the needle retraction point to optimize the stress state of the needle bar during the needle retraction process, thereby reducing impact and noise.
[0032] III. Regarding the large circular kiln of the present invention
[0033] This large circular knitting machine, composed of three core components—the needle-out looping triangle, the needle-containing looping triangle, and the floating thread triangle—is used to produce fabrics of type 1350. These fabrics have the advantages of smooth weave and a fluffy, comfortable feel. Attached Figure Description
[0034] Figure 1 This is a plan view of the needle exiting the loop triangle in Example 1;
[0035] Figure 2 This is a plan view of the triangular area containing the needle-shaped loop in Example 2;
[0036] Figure 3 This is a plan view of the floating triangle in Example 3. Detailed Implementation
[0037] The present invention will now be clearly and completely described in conjunction with embodiments thereof. It should be noted that, unless specific conditions are specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all commercially available conventional products.
[0038] Example 1
[0039] refer to Figure 1A double-sided circular knitting machine with a needle-forming triangle 1 includes a first triangle body 10, on which a first needle-feeding groove is provided; the first needle-feeding groove is composed of a first needle-in groove 11, a first rising groove 12, a first falling groove 13, a first transition groove 14, a second falling groove 15, a first V-shaped needle-receiving groove 16, and a first needle-out groove 17 connected in sequence.
[0040] The height of the first triangular body 10 is 24mm. The first rising groove 12 and the first falling groove 13 form the apex of the first needle feeding groove. The distance between the apex and the upper edge of the first triangular body 10 is 2.18mm. The distance between the first V-shaped needle receiving groove 16 and the lower edge of the first triangular body 10 is 2.88mm. The length of the first needle output groove 17 is 4mm.
[0041] The included angle between the first rising groove 12 and the first descending groove 13 is 80°; the included angle between the first rising groove 12 and the horizontal plane is 130°; the included angle between the first descending groove 13 and the horizontal plane is 130°; the included angle between the second descending groove 15 and the horizontal plane is 130°; the width of the first rising groove 12 is 2.61 mm; the width of the first descending groove 13 is 2.61 mm; the width of the second descending groove 15 is 2.3 mm; the width of the first V-shaped needle receiving groove 16 is 2.3 mm; the width of the first needle exiting groove 17 is 3.4 mm; the distance between the upper edge of the first needle exiting groove 17 and the upper edge of the first triangular body 10 is 17.75 mm.
[0042] The width of the first triangular body 10 is 37.33 mm. The side of the first triangular body 10 with the first needle inlet groove 11 is the needle inlet side. The first triangular body 10 has a needle outlet side. The distance between the vertex and the needle inlet side is 15.81 mm. The distance between the starting end of the second descending groove 15 and the needle outlet side is 14.52 mm. The horizontal length of the first descending groove 13 is 5.25 mm.
[0043] Example 2
[0044] refer to Figure 2 A double-sided circular knitting machine with a needle-gathering triangle 2 includes a second triangle body 20, on which a second needle-feeding groove is provided; the second needle-feeding groove is composed of a second needle-infeeding groove 21, a second rising groove 22, a second horizontal groove 23, a third descending groove 24, and a second needle-outfeeding groove 25 connected in sequence.
[0045] The width of the second triangular body 20 is 37.33 mm, the height of the second triangular body 20 is 24 mm, and the side of the second triangular body 20 where the second needle insertion groove 21 is provided is the needle insertion side; the second triangular body 20 has a needle exit side; the distance from the end of the second horizontal groove 23 to the needle exit side is 14.52 mm; the length of the second horizontal groove 23 is 12.6 mm; the length of the second needle exit groove 25 is 8.7 mm; the width of the second rising groove 22 is 2.55 mm; the included angle between the second rising groove 22 and the horizontal plane is 132°; the horizontal length of the second rising groove 22 is 5.2 mm; the width of the third descending groove 24 is 2.3 mm; the included angle between the third descending groove 24 and the horizontal plane is 123°; the horizontal length of the third descending groove 24 is 7.0 mm; the width of the second needle exit groove 25 is 3.1 mm; the height of the second triangular body 20 is 24 mm; the distance from the upper edge of the second horizontal groove 23 to the upper edge of the second triangular body 20 is 8.9 mm.
[0046] Example 3
[0047] The circular knitting machine of this embodiment includes the needle exit and loop forming triangle 1 as in Example 1, the needle-containing tuck-in triangle 2 as in Example 2, and the float triangle 3 (refer to Figure 3 )
[0048] The float triangle 3 includes a third triangular body 30, and a third needle running groove is provided on the third triangular body 30; the third needle running groove is composed of a third needle insertion groove 31, a third horizontal groove 32, a fourth horizontal groove 33, and a fourth needle exit groove 35 connected in sequence;
[0049] The distance from the upper side edge of the third horizontal groove 32 to the upper edge of the third triangular body 30 is 15.9 mm, the distance from the upper side edge of the fourth horizontal groove 33 to the upper edge of the third triangular body 30 is 15.0 mm, and the widths of the third horizontal groove 32 and the fourth horizontal groove 33 are both 3.3 mm; the width of the third triangular body 30 is 37.33 mm.
[0050] This embodiment takes the production of 1350-type cloth as an example, and the characteristics of the cloth are that the cloth texture is flat and the hand feeling is fluffy and comfortable;
[0051] The production process of the present invention refers to Table 1;
[0052] Table 1 Production Process Table
[0053]
[0054] Among them, "—" represents float line, "∧∨" represents loop forming, and "∩∪" represents tuck-in.
[0055] Knitting process:
[0056] First route: interweaving (inner layer connecting yarn), using 50D / 36F polyester low elastic yarn (the upper needle plate 2 sections of tuck triangle 2 sections of knitting needles and the lower needle plate 2 sections of tuck triangle 2 sections of knitting needles are all in a half-exit state to hook the yarn and connect with the second route lower single-sided loop and the third route upper single-sided loop padding).
[0057] Second route: Down one side (front loop loop), drop 40S / 1 cotton + 30D spandex, (lower needle cylinder 1 and 2 loop loop triangular needles hook yarn and spandex cover to knit loop, lower needle cylinder 2 loop loop needles connect with lower needle cylinder 2 section loop knitting needles hook yarn padding).
[0058] Third route: Upper single side (reverse loop loop), drop 40S / 1 cotton + 30D spandex, (upper needle plate 1 and 2 sections of loop forming triangle needles hook yarn and spandex cover to knit loops, 2 sections of loop forming needles connect with the first upper needle plate 2 sections of tuck loop needles hook yarn padding).
[0059] Fourth route: interlacing (inner layer connecting yarn), using 50D / 36F polyester low elastic yarn (the upper needle plate section tuck triangle needle and the lower needle cylinder section tuck triangle needle are both in a half-exit state to hook the yarn and connect with the fifth route lower single-sided loop section and the sixth route upper single-sided loop section to padded knitting).
[0060] Fifth row: single side (front loop stitch), drop 40S / 1 cotton + 30D spandex, (lower cylinder sections 1 and 2 loop stitch tufting needles hook yarn and spandex cover to knit loops, section 1 loop stitching needle connects with section 1 of lower cylinder section tuck stitching needles of the fourth row to hook yarn pad).
[0061] Sixth row: Upper single side (reverse side loop), drop 40S / 1 cotton + 30D spandex, (upper needle plate 1 and 2 sections loop forming triangle needles hook yarn and spandex cover to knit loops, section 1 loop forming needles connect with section 1 of the fourth row needle plate to hook yarn pad).
[0062] This process involves 6 cycles, with the tension of the interlacing yarn controlled at 2 grams; and the tension of the single-sided cotton yarn feeding at 1.8 grams.
[0063] The advantages of this invention are:
[0064] 1. Through on-site monitoring of the production site, the production advantages achieved before and after the transformation are as follows: By adjusting the structure of the track height, the position of the needle take-off point, and the buffer zone, the problems of traditional triangular tracks, such as "difficulty in adapting to different yarns, weave structures, or style requirements", "high impact noise", and "incompatibility of design leading to speed changes affecting accuracy", are solved, thus achieving adaptability to various weaving processes and high-speed stable operation.
[0065] 2. The application of the above-mentioned triangular track structure in double-sided circular knitting machines is particularly suitable for knitting equipment that requires optimization (upper disc forming a loop triangle, lower disc forming a loop triangle), high-speed knitting, multiple yarns, or complex weave structures, thus solving the defects of traditional triangular tracks in terms of adaptability and stability.
Claims
1. A double-sided circular knitting machine for producing triangular loops, characterized in that, It includes a first triangular body, on which a first needle-feeding groove is provided; the first needle-feeding groove is composed of a first needle-in groove, a first rising groove, a first falling groove, a first transition groove, a second falling groove, a first V-shaped needle-receiving groove, and a first needle-out groove connected in sequence. The height of the first triangular body is 24mm. The first rising groove and the first falling groove form the apex of the first needle feeding groove. The distance between the apex and the upper edge of the first triangular body is 2.18mm. The distance between the first V-shaped needle receiving groove and the lower edge of the first triangular body is 2.88mm. The length of the first needle exiting groove is 4mm.
2. The double-sided large circular knitting machine with needles forming triangular loops according to claim 1, characterized in that, The included angle between the first rising groove and the first descending groove is 80°; the included angle between the first rising groove and the horizontal plane is 130°; the included angle between the first descending groove and the horizontal plane is 130°; the included angle between the second descending groove and the horizontal plane is 130°; the width of the first rising groove is 2.61 mm; the width of the first descending groove is 2.61 mm; the width of the second descending groove is 2.3 mm; the width of the first V-shaped needle receiving groove is 2.3 mm; the width of the first needle exiting groove is 3.4 mm; the distance between the upper edge of the first needle exiting groove and the upper edge of the first triangular body is 17.75 mm.
3. The double-sided large circular knitting machine with needles forming triangular loops according to claim 2, characterized in that, The width of the first triangular body is 37.33 mm. The side of the first triangular body with the first needle inlet groove is the needle inlet side. The first triangular body has a needle outlet side. The distance between the vertex and the needle inlet side is 15.81 mm. The distance between the starting end of the second descending groove and the needle outlet side is 14.52 mm. The horizontal length of the first descending groove is 5.25 mm.
4. A double-sided large circular knitting machine with a needle-collecting triangular ring, characterized in that, It includes a second triangular body, on which a second needle groove is provided; the second needle groove is composed of a second needle inlet groove, a second rising groove, a second horizontal groove, a third falling groove, and a second needle outlet groove connected in sequence. The second triangular body has a width of 37.33 mm and a height of 24 mm. The side of the second triangular body with the second needle inlet groove is the needle inlet side. The second triangular body has a needle outlet side. The distance from the end of the second horizontal groove to the needle outlet side is 14.52 mm. The length of the second horizontal groove is 12.6 mm. The length of the second needle outlet groove is 8.7 mm.
5. The double-sided large circular knitting machine with needle-collecting triangular ring according to claim 4, characterized in that, The width of the second rising groove is 2.55 mm; the angle between the second rising groove and the horizontal plane is 132°; the horizontal length of the second rising groove is 5.2 mm; the width of the third falling groove is 2.3 mm; the angle between the third falling groove and the horizontal plane is 123°; the horizontal length of the third falling groove is 7.0 mm; the width of the second needle outlet groove is 3.1 mm; the height of the second triangular body is 24 mm; the distance between the upper edge of the second horizontal groove and the upper edge of the second triangular body is 8.9 mm.
6. A large circular knitting machine, characterized in that, This includes the needle-out looping triangle as described in any one of claims 1 to 3, the needle-containing looping triangle as described in claim 4 or 5, and the floating thread triangle.
7. The large circular knitting machine according to claim 6, characterized in that, The floating line triangle includes a third triangle body, on which a third needle groove is provided; the third needle groove is composed of a third needle inlet groove, a third horizontal groove, a fourth horizontal groove, and a fourth needle outlet groove connected in sequence. The distance between the upper edge of the third horizontal groove and the upper edge of the third triangular body is 15.9 mm, and the distance between the upper edge of the fourth horizontal groove and the upper edge of the third triangular body is 15.0 mm. The width of both the third and fourth horizontal grooves is 3.3 mm.
8. The large circular knitting machine according to claim 7, characterized in that, The width of the third triangular body is 37.33 mm.