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(11) | EP 4 438 781 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | CYLINDER AND DIAL CIRCULAR KNITTING MACHINE |
| (57) A cylinder and dial knitting machine (20) includes a knitting gap (21), at least
one feeder (22) for feeding two yarns (30, 31) into the knitting gap (21), a plurality
of upper needles (24), a plurality of lower needles (26), and a selector (27). The
two yarns (30, 31) are interlaced at a point (32) in the knitting gap (21). Each of
the lower needles (26) is controlled by the selector (27) to have a hooking point
(261 or 261). The knitting machine provides two hooking points (261, 262) at different
angular positions along the knitting gap (21), and the two hooking points (261, 262)
are spaced different distances from the yarn interlacing point (32). Each of the lower
needles (26) hooks the two yarns (30, 31) at one of the two hooking points (261, 262).
Each of the plurality of lower needles (26) thereby determines whether the looping
process is standard plating or interchanged plating based on the relative positions
of the two yarns (30, 31).
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FIELD OF THE INVENTION
[0001] The invention relates to a cylinder and dial knitting machine, in particular to a circular knitting machine capable of implementing yarn-dyed jacquard when knitting double-sided fabrics.
BACKGROUND OF THE INVENTION
[0002] At present, the design of circular knitting machines generally requires color dyeing after knitting when double-knitted fabrics are to be multi-colored. If the yarn-dyed jacquard is used, the weight and thickness of the double-knitted fabric obviously do not meet the requirements of commercial fabrics. More specifically, when the current circular knitting machine uses yarn-dyed jacquard, it needs to feed one-color yarn through one feeder. To present four-color jacquard, a single weaving process needs to pass through four feeders, resulting in the above-mentioned problems of the double-knitted fabric.
SUMMARY OF THE INVENTION
[0003] The main purpose of the present invention is to solve the problem that the existing circular knitting machine structure causes the fabric thickness and weight of the double-knitted fabric of yarn-dyed jacquard to be difficult to meet the market demand.
[0004] In order to achieve the above purpose, the present invention provides a cylinder and dial knitting machine, which includes a knitting gap, at least one feeder configured to feed two yarns into the knitting gap, at least one upper needle cam, a plurality of upper needles guided by the at least one upper needle cam, at least one lower needle cam, a plurality of lower needles guided by the at least one lower needle cam, and a selector. The two yarns are interlaced at a narrowing point located in the knitting gap. Each of the lower needles is controlled by the selector to have two narrowing states. Each of the plurality of lower needles has a hooking point in each of the two narrowing states. Two hooking points have different positions at the knitting gap, and the two hooking points have different distances to the narrowing point Each of the plurality of lower needles is hooked at the two yarns at one of the two hooking points. According to relative positions of the two yarns, a looping process is standard plating or interchanged plating is determined by each of the plurality of lower needles.
[0005] In an embodiment, the cylinder and dial knitting machine includes two feeders, and each of the two feeders feeds the two yarns into the knitting gap. Colors of a plurality of yarns fed into the knitting gap by the two feeders are different from each other.
[0006] In an embodiment, each of the plurality of lower needles has a first half needle position. Each of the plurality of upper needles has a second half needle position. Each of the plurality of lower needles has a first starting point for narrowing to start narrowing from the first half needle position in each of the two narrowing states. Each of the plurality of upper needles has a second starting point for narrowing to start narrowing from the second half needle position. The second starting point for narrowing is located at a position between two first starting points for narrowing at the knitting gap.
[0007] In an embodiment, each of the two yarns has a yarn-feeding path. Two yarn-feeding paths are different. Two extension lines of the two yarn-feeding paths are interlaced at the narrowing point.
[0008] In an embodiment, each of the plurality of lower needles has a first cast-off point in each of the two narrowing states. Each of the plurality of upper needles has a second cast-off point upon moving. A timing when the plurality of upper needles enter the second cast-off point is earlier than that when the plurality of lower needles enter the first cast-off point.
[0009] Through the foregoing implementation, compared with conventional ones, the present invention has the following characteristics: each of the plurality of lower needles of the present invention is controlled by the selector to have two narrowing states. According to different positions of the hooking point of each of the plurality of lower needles in the two narrowing states, it is decided to standard plating or interchanged plating into a loop, and then realize the yarn-dyed jacquard in the process of knitting the double-knitted fabric. The double-knitted fabric with multi-color jacquard of the invention has lighter weight and thinner thickness of the compared to conventional circular knitting machine, and much closer to design requirements of commercial clothing.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010]
Fig. 1 is a first partial structure diagram of a cylinder and dial knitting machine of the present invention.
Fig. 2 is a second partial structure diagram of a cylinder and dial knitting machine of the present invention.
Fig. 3 is a schematic diagram of the implementation of a cylinder and dial knitting machine in one narrowing state of the present invention.
Fig. 4 is a schematic diagram of the implementation of a cylinder and dial knitting machine in another narrowing state of the present invention.
Fig. 5 is a top view of a partial structure of a cylinder and dial knitting machine of the present invention.
Fig. 6 is a schematic diagram of a needle track of a cylinder and dial knitting machine in one narrowing state of the present invention.
Fig. 7 is a schematic diagram of a needle track of a cylinder and dial knitting machine in another narrowing state of the present invention.
Fig. 8 is a knitting schematic diagram of the knitting of a double-sided knitted fabric of a cylinder and dial knitting machine in an embodiment of the present invention.
Fig. 9 is a schematic diagram of a double-sided knitted fabric knitted product in an embodiment of the cylinder and dial knitting machine of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0011] The detailed description and technical content of the present invention are as follows in conjunction with the figures.
[0012] Please refer to Fig. 1 and Fig. 2. The present invention provides a cylinder and dial knitting machine 20, including a knitting gap 21, at least one feeder 22, at least one upper needle cam 23, a plurality of upper needles 24, at least one lower needle cam 25, a plurality of lower needles 26, and a selector 27. The knitting gap 21 is defined by an upper dial 28 and a lower cylinder 29. The knitting gap 21 is a place where the upper needles 24 and the lower needles 26 interact to knit a double-knitted fabric. In addition, the at least one feeder 22 is formed by a yarn-feeding mechanism installed on the cylinder and dial knitting machine 20. The yarn-feeding mechanism is an existing part of the cylinder and dial knitting machine 20, which will not be described here. The at least one upper needle cam 23 is arranged on the upper dial 28. The at least one upper needle cam 23 can be composed of a plurality of cam blocks. The at least one upper needle cam 23 is provided with an upper needle track for the plurality of upper needle 24 moving. The plurality of upper needles 24 are guided by the at least one upper needle cam 23 to be reciprocally displaced in the knitting gap 21 for knitting. On the other hand, the at least one lower needle cam 25 is arranged on the lower cylinder 29, and the at least one lower needle cam 25 can be composed of a plurality of cam blocks. In the invention, the at least one lower needle cam 25 is provided with a lower needle track for the plurality of lower needles 26 moving. The lower needle track provides at least two trajectories for each of the plurality of lower needles 26 to move. Next, the plurality of lower needles 26 are guided by the at least one lower needle cam 25 to be reciprocally displaced in the knitting gap 21 for knitting. In addition, the plurality of lower needles 26 of the invention coordinated with the plurality of upper needles 24 for knitting the double-knitted fabric. Moreover, the selector 27 controls a motion state of each of the plurality of lower needles 26 based on a signal provided by a circular knitting machine controller (not shown in the figure). The selector 27 changes a position that each motion of the plurality of lower needles 26 in the lower needle track by pushing a selected pin of each of the plurality of lower needles 26, so that each of the plurality of lower needles 26 moves in one of the at least two trajectories.
[0013] Refer to Fig. 3 and Fig. 4. The feeder 22 is configured to feed two yarns 30 and 31 toward the knitting gap 21. The two yarns 30 and 31 are interlaced at a narrowing point 32 located in the knitting gap 21. A horizontal position of the narrowing point 32 is lower than the plurality of upper needles 24. Further, each of the two yarns 30 and 31 has a yarn-feeding path 301 (311). Two yarn-feeding paths 301 and 311 are different. Two extension lines of the two yarn-feeding paths 301 and 311 are interlaced at the narrowing point 32. When the two yarns 30 and 31 are observed in a direction from a side of the cylinder and dial knitting machine 20, the two yarns 30 and 31 are interlaced at the narrowing point 32, but also are arranged with one high and one low, as shown in Fig. 3. Additionally, when the two yarns 30 and 31 are observed from a top angle of the cylinder and dial knitting machine 20, the two yarns 30 and 31 are not only interlaced at the narrowing point 32 but also are arranged with one front and one back, as shown in Fig. 5. Moreover, the knitting gap 21 of the cylinder and dial knitting machine 20 is circular. Take the narrowing point 32 as the observation position to observe relative positions of the two yarns 30 and 31 relative to the narrowing point 32 at different distances, it is known that the relative positions of the two yarns 30 and 31 are not absolute.
[0014] On the other hand, in conjunction with Fig. 3, Fig. 4, Fig. 6, and Fig. 7, each of the plurality of lower needles 26 is controlled by the selector 27 to have two narrowing states. Each of the plurality of lower needles 26 has a hooking point 261 (262) in each of the two narrowing states. The hook point 261 (262) refers to a position where each of the plurality of lower needles 26 hooks the two yarns 30 and 31 during a looping process. In addition, two hooking points 261 and 262 having different positions at the knitting gap 21, and the two hook points 261 and 262 have different distances to the narrowing point 32. That is to say, one of the two hooking points 261 and 262 is closer to the narrowing point 32, and the other one of the two hooking points 261 and 262 is farther from the narrowing point 32. In addition, each of the plurality of lower needles 26 hooks the two yarns 30 and 31 at one of the two hooking points 261 and 262, and determines the looping process is standard plating or interchanged plating in accordance with the relative positions of the two yarns 30 and 31. More specifically, standard plating or interchanged plating is determined by a relative position of the two yarns 30 and 31 in a hook 263 of each of the plurality of lower needles 26. It should be understood that the relative position of the two yarns 30 and 31 in the hook 263 of each of the plurality of lower needles 26 has been determined when each of the plurality of lower needles 26 of the invention is hooked at one of the two hooking points 261 and 262. The relative position of the two yarns 30 and 31 in the hook 263 will not be changed by other assist means. The two yarns 30 and 31 are looped by standard plating or interchanged plating will change color-appearance on a surface of the double-knitted fabric to achieve yarn-dyed jacquard. In an embodiment, the cylinder and dial knitting machine 20 includes two feeders 22, and each of the two feeders 22 feeds the two yarns 30, 31 (33, 34) into the knitting gap 21. Colors of a plurality of yarns 30, 31, 33 and 34 fed into the knitting gap 21 by the two feeders 22 are different from each other. Further, a quantity of the plurality of yarns 30, 31, 33 and 34 fed into the knitting gap 21 by the two feeders 22 is four to achieve two-feeder four-color yarn-dyed jacquard. A knitting sequence of the cylinder and dial knitting machine 20 is shown in Fig. 8. The double-knitted fabric is shown in Fig. 9. Reference numbers 40 and 41 in Fig. 8 show the knitting sequences of two feeders respectively. The double-knitted fabric with four-color jacquard of the invention has lighter weight and thinner thickness compared to conventional four-color knitwear, and much closer to design requirements of commercial clothing.
[0015] Please refer to Fig. 6 and Fig. 7. In an embodiment, each of the plurality of lower needles 26 has a first half needle position 264. Each of the plurality of upper needles 24 has a second half needle position 241. Each of the plurality of lower needles 26 has a first starting point for narrowing 265 (or 267) to start narrowing from the first half needle position 264 in each of the two narrowing states. Each of the plurality of upper needles 24 has a second starting point for narrowing 242 to start narrowing from the second half needle position 241 in each of the two narrowing states. The second starting point for narrowing 242 is located at a position between two first starting points 265 and 267 at the knitting gap 21. On the other hand, each of the plurality of lower needles 26 has a first cast-off point 266 in each of the two narrowing states. Each of the plurality of upper needles 24 has a second cast-off point 243 upon moving. A timing when the plurality of upper needles 24 enter the second cast-off point 243 is earlier than that when the plurality of lower needles 26 enter the first cast-off point 266.
1. A cylinder and dial knitting machine (20), comprising a knitting gap (21), at least
one feeder (22) configured to feed two yarns (30, 31) into the knitting gap (21),
at least one upper needle cam (23), a plurality of upper needles (24) guided by the
at least one upper needle cam (23), at least one lower needle cam (25), and a plurality
of lower needles (26) guided by the at least one lower needle cam (25), the two yarns
(30, 31) being interlaced at a narrowing point (32) located in the knitting gap (21),
the cylinder and dial knitting machine (20) being characterized in that,
the cylinder and dial knitting machine (20) further comprises a selector (27), each of the plurality of lower needles (26) is controlled by the selector (27) to comprise two narrowing states, each of the plurality of lower needles (26) comprises a hooking point (261 or 262) in each of the two narrowing states, the two hooking points (261, 262) have different positions at the knitting gap (21), the two hooking points (261, 262) have two different distances to the narrowing point (32), and each of the plurality of lower needles (26) is disposed to hook the two yarns (30, 31) at one of the two hooking points (261, 262) and determines a looping process is standard plating or interchanged plating according to relative positions of the two yarns (30, 31).
the cylinder and dial knitting machine (20) further comprises a selector (27), each of the plurality of lower needles (26) is controlled by the selector (27) to comprise two narrowing states, each of the plurality of lower needles (26) comprises a hooking point (261 or 262) in each of the two narrowing states, the two hooking points (261, 262) have different positions at the knitting gap (21), the two hooking points (261, 262) have two different distances to the narrowing point (32), and each of the plurality of lower needles (26) is disposed to hook the two yarns (30, 31) at one of the two hooking points (261, 262) and determines a looping process is standard plating or interchanged plating according to relative positions of the two yarns (30, 31).
2. The cylinder and dial knitting machine (20) according to claim 1, wherein the cylinder
and dial knitting machine (20) includes at least two feeders (22), each of the at
least two feeders (22) feeds the two yarns (30, 31) into the knitting gap (21), and
colors of a plurality of yarns (30, 31, 33, 34) fed into the knitting gap (21) by
the two feeder (21) are different from each other.
3. The cylinder and dial knitting machine (20) according to claim 1 or 2, wherein each
of the lower needles (26) comprises a first half needle position (264), each of the
upper needles (24) comprises a second half needle position (241), each of the lower
needles (26) comprises a first starting point for narrowing (265 or 267) to start
narrowing from the first half needle position (264) in each of the two narrowing states,
each of the upper needles (24) comprises a second starting point for narrowing (242)
to start narrowing from the second half needle position (241), and the second starting
point for narrowing (242) is located at a position between the two first starting
points for narrowing (265, 267) at the knitting gap (21).
4. The cylinder and dial knitting machine (20) according to claim 3, wherein each of
the two yarns (30, 31) has a yarn-feeding path (301, 311), the two yarn-feeding paths
(301, 311) are different, and two extension lines of the two yarn-feeding paths (301,
311) are interlaced at the narrowing point.
5. The cylinder and dial knitting machine (20) according to claim 4, wherein each of
the plurality of lower needles (26) comprises a first cast-off point (266) in each
of the two narrowing states, each of the plurality of upper needles (24) between a
second cast-off point (243) upon moving, and a timing when the plurality of upper
needles (24) enter the second cast-off point (243) is earlier than that when the plurality
of lower needles (26) enter the first cast-off point (266).
6. The cylinder and dial knitting machine (20) according to claim 1 or 2, wherein each
of the plurality of lower needles (26) comprises a first cast-off point (266) in each
of the two narrowing states, each of the plurality of upper needles (24) between a
second cast-off point (243) upon moving, and a timing when the plurality of upper
needles (24) enter the second cast-off point (243) is earlier than that when the plurality
of lower needles (26) enter the first cast-off point (266)