TWI836922B - Double circular knitting machine - Google Patents

Abstract

A double-sided circular knitting machine includes a knitting mouth, at least one yarn feeding mouth for feeding two yarns toward the knitting mouth, a plurality of upper knitting needles, a plurality of lower knitting needles, and a needle selector. The two yarns are interlaced at a narrowing point located in the knitting mouth. Each of the lower knitting needles is controlled by the needle selector and has two narrowing states. Each of the lower knitting needles is in the two narrowing states. Each has a yarn hooking point, the two yarn hooking points are at different positions at the knitting mouth, the distances between the two yarn hooking points and the narrowing points are different, each of the lower knitting needles has two yarn hooking points. Click one of them to seduce the two yarns. The current relative position of the two yarns determines whether the loop will be one of the following: forward wrapping or reverse wrapping.

Description

Double circular knitting machine

The invention relates to a double-sided circular knitting machine, and in particular, to a circular knitting machine that can perform yarn-dyed jacquard knitting when knitting double-sided fabrics.

The design of current circular knitting machines results in the need for post-weaving dyeing of double-sided knitted fabrics when multiple colors are to be implemented. If the double-sided knitted fabric is implemented with color-dyed jacquard, the weight and thickness of the double-sided knitted fabric obviously do not meet the requirements of commercial fabrics. More specifically, when the current circular knitting machine is used for color-dyed jacquard, it is necessary to feed one color yarn to one feeder. To present four-color jacquard, a single weaving process needs to pass through four feeders, resulting in the aforementioned problems of the double-sided knitted fabric.

The main purpose of the present invention is to solve the problem that the existing circular knitting machine structure causes the yarn-dyed jacquard double-sided knitted fabric to have cloth thickness and cloth weight that are difficult to meet market demand.

To achieve the above-mentioned object, the present invention provides a double-sided circular knitting machine, comprising a knitting nozzle, at least one yarn feeding nozzle for feeding two yarns into the knitting nozzle, at least one upper knitting needle corner, a plurality of upper knitting needles guided by the at least one upper knitting needle corner, at least one lower knitting needle corner, a plurality of lower knitting needles guided by the at least one lower knitting needle corner, and a needle selector. The two yarns are interlaced at a needle closing point in the knitting mouth. Each of the lower knitting needles is controlled by the needle selector to have two needle closing states. Each of the lower knitting needles has a hooking point in the two needle closing states. The two hooking points are at different positions in the knitting mouth. The distances between the two hooking points and the needle closing point are different. Each of the lower knitting needles hooks the two yarns at one of the two hooking points to determine the looping as one of the following based on the relative positions of the two yarns at that time: positive wrapping and reverse wrapping.

In one embodiment, the double-sided circular knitting machine has two yarn feeding ports, each of which feeds the two yarns into the knitting nozzle, and the colors of the multiple yarns fed into the knitting nozzle by the two yarn feeding ports are different from each other.

In one embodiment, each of the lower knitting needles has a first half-needle position, each of the upper knitting needles has a second half-needle position, and each of the lower knitting needles is in the two narrowing states. There is a first narrowing starting point starting from the first half-needle position, and each of the upper knitting needles has a second narrowing starting point starting from the second half-needle position, The second narrowing starting point at the knitting mouth position is between the two first narrowing starting points at the knitting mouth position.

In one embodiment, each of the two yarns has a yarn feeding path, the two yarn feeding paths are different, and the two extension lines of the two yarn feeding paths intersect at the needle closing point.

In one embodiment, each of the lower knitting needles has a first clearing point in the two needle-retracting states, and each of the upper knitting needles has a second clearing point when active, and the time point when the upper knitting needles enter the second clearing point is earlier than the time point when the lower knitting needles enter the first clearing point.

Through the foregoing implementation of the present invention, compared with the conventional ones, it has the following characteristics: the lower knitting needles of the present invention are each controlled by the needle selector and have the two narrowing states, and each of the lower knitting needles is in the two narrowing states. Depending on the position of the yarn hooking point in the state, it is decided whether to wrap it up to form a loop or wrap it up to form a loop, and then realize yarn-dyed jacquard in the process of knitting the double-sided knitted fabric. The present invention makes the cloth weight and cloth thickness of the multi-color jacquard double-sided knitted fabric significantly lighter and thinner than those woven by conventional circular knitting machines, and can better meet the design needs of commercial clothing.

20:Double-sided circular knitting machine

21: Knitted mouth

22: Feed the gauze

23: Upper Knitting Needle Mountain Corner

24: Upper knitting needle

241: Second half needle position

242: Starting point of the second stitch closing

243: Second clearing point

25: Lower Knitting Needle Mountain Corner

26: Lower knitting needle

261, 262: Hooking points

263: Needle hook

264: First half stitch position

265, 267: starting point of the first narrowing needle

266: The first clearing point

27: Needle selector

28: Upper needle plate

29: Insert the syringe

30, 31, 33, 34: yarn

301, 311: Yarn feeding path

32: Needle shrinking point

40, 41: Single stitch knitting instructions

Figure 1 is a partial structural schematic diagram of the double-sided circular knitting machine of the present invention (1).

Figure 2, schematic diagram of the partial structure of the double-sided circular knitting machine of the present invention (II).

Figure 3 is a schematic diagram of the implementation of the double-sided circular knitting machine of the present invention in one of the needle narrowing states.

Figure 4 is a schematic diagram of the double-sided circular knitting machine of the present invention in another needle narrowing state.

Figure 5 is a top view schematic diagram of the partial structure of the double-sided circular knitting machine of the present invention.

Figure 6 is a schematic diagram of the knitting needle trajectory of the double-sided circular knitting machine of the present invention in one of the needle narrowing states.

Figure 7 is a schematic diagram of the needle track of the double-sided circular knitting machine of the present invention in another needle narrowing state.

Figure 8 is a schematic diagram of knitting a double-sided knitted fabric according to an embodiment of the double-sided circular knitting machine of the present invention.

Figure 9 is a schematic diagram of a double-sided knitted fabric produced by knitting needles in a first embodiment of the double-sided circular knitting machine of the present invention.

The detailed description and technical content of the present invention are as follows with reference to the drawings: Please refer to Figures 1 and 2. The present invention provides a double-sided circular knitting machine 20, which includes a knitting mouth 21, at least one yarn feeding mouth 22, and at least one yarn feeding mouth 22. Upper knitting needle horn 23, plural upper knitting needles 24, at least one lower knitting needle horn 25, plural lower knitting needles 26 and a needle selector 27. The knitting mouth 21 is jointly defined by an upper needle plate 28 and a lower needle cylinder 29. The knitting mouth 21 is the place where the upper knitting needles 24 and the lower knitting needles 26 interact to knit a double-sided knitted fabric. . In addition, the at least one yarn feeding port 22 is realized by a yarn feeding mechanism installed on the double circular knitting machine 20. The yarn feeding mechanism is an existing component of the double circular knitting machine 20 and will not be described in detail here. . The at least one upper knitting needle shank 23 is provided on the upper needle plate 28. The at least one upper knitting needle shank 23 can be composed of a plurality of shank blocks. The at least one upper knitting needle shank 23 forms a hole that provides movement of the upper knitting needles 24. Upper knitting needle track. The upper knitting needles 24 are guided by the at least one upper knitting needle horn 23, and reciprocate in the knitting mouth 21 to produce knitting action. On the other hand, the at least one knitting needle horn 25 is provided on the lower needle barrel 29, and the at least one knitting needle horn 25 can be composed of a plurality of horn blocks. In the present invention, the at least one lower knitting needle horn 25 forms a lower knitting needle track that provides movement of the lower knitting needles 26. The lower knitting needle track provides that each of the lower knitting needles 26 can move in at least two trajectories. Following the above, the lower knitting needles 26 are guided by the at least one knitting needle horn 25 and reciprocally displace in the knitting mouth 21 to produce knitting action. Furthermore, in the present invention, the lower knitting needles 26 cooperate with the upper knitting needles 24 to knit to produce the double-sided knitted fabric. Furthermore, the needle selector 27 controls the active state of each of the lower knitting needles 26 based on a signal provided by a circular knitting machine controller (not shown in the figure). The needle selector 27 controls the activity of each of the lower knitting needles 26 by pushing the lower knitting needles. Each selected stitch of 26 is used to change the position of each of the lower knitting needles 26 in the lower knitting needle track, so that each of the lower knitting needles 26 moves in one of the at least two trajectories.

Please refer to Figures 3 and 4. The yarn feeding port 22 is configured to feed two yarns 30 and 31 toward the knitting port 21. The two yarns 30 and 31 intersect at a needle reduction point 32 located in the knitting port 21. The horizontal position of the needle reduction point 32 is lower than the upper knitting needles 24. Further, each of the two yarns 30 and 31 has a yarn feeding path 301 and 311. The two yarn feeding paths 301 and 311 are different. The two extension lines of the two yarn feeding paths 301 and 311 intersect at the needle reduction point 32. Next, the two yarns 30 and 31 are observed from the side direction of the double-sided circular knitting machine 20. In addition to being interlaced at the needle narrowing point 32, the two yarns 30 and 31 are one high and one low, as shown in FIG3. In addition, the two yarns 30 and 31 are observed from the top view of the double-sided circular knitting machine 20. In addition to being interlaced at the needle narrowing point 32, the two yarns 30 and 31 are one in front and one behind, as shown in FIG5. Furthermore, the knitting mouth 21 of the double-sided circular knitting machine 20 is circular. If the relative positions of the two yarns 30 and 31 at different distances from the needle narrowing point 32 are observed based on the needle narrowing point 32, it can be understood that the relative positions of the two yarns 30 and 31 are not absolute.

Please match Figure 3, Figure 4, Figure 6 and Figure 7. On the other hand, each of the lower knitting needles 26 is controlled by the needle selector 27 and has two needle narrowing states. Each of the lower knitting needles 26 is in Each of the two narrowing states has a hooking point 261 (262). The hooking point 261 (262) means that each of the lower knitting needles 26 hooks the two yarns during the hooking and looping process. 30 and 31 positions. In addition, the positions of the two hooking points 261 and 262 on the knitting mouth 21 are different, and the distances between the two hooking points 261 and 262 and the narrowing point 32 are different. That is to say, one of the two yarn hooking points 261 and 262 is closer to the needle narrowing point 32, and the other of the two yarn hooking points 261 and 262 is farther from the needle narrowing point 32. In addition, each of the lower knitting needles 26 hooks the two yarns 30 and 31 at one of the two hooking points 261 and 262, and the current relative position of the two yarns 30 and 31 determines the loop formation. One of the following: genuine package or reverse package. More specifically, the aforementioned The wrapping or turning is based on the relative position of the two yarns 30 and 31 in a hook 263 of each of the lower knitting needles 26. It should be understood that when the lower knitting needles 26 of the present invention are hooked at one of the two hooking points 261 and 262, the two yarns 30 and 31 are hooked at one of the lower knitting needles 26. The relative positions of the two yarns 30 and 31 in the hook 263 have been determined, and no other assistance is needed to change the relative positions of the two yarns 30 and 31 in the hook 263. The two yarns 30 and 31 are wrapped or turned into a loop, which will change the color of the surface of the double-sided knitted fabric and realize yarn-dyed jacquard. In one embodiment, the double-sided circular knitting machine 20 has two yarn feeding ports 22, and each of the two yarn feeding ports 22 feeds the two yarns 30, 31 (33, 34) to the knitting mouth 21. The yarns 30, 31, 33, and 34 fed into the knitting mouth 21 by the yarn mouth 22 have different colors. Furthermore, the number of the yarns 30, 31; 33, 34 fed into the knitting mouth 21 by the two yarn feeding ports 22 is four, and two ports and four colors of yarn-dyed jacquard can be realized. The double-sided circular knitting machine The knitting sequence of 20 is shown in Figure 8. The completed double-sided knitted fabric is shown in Figure 9. The numbers 40 and 41 marked in Figure 8 are the knitting sequences of the two ends respectively. The invention makes the fabric weight and thickness of the double-sided knitted fabric with four-color jacquard significantly lighter and thinner than the conventional four-pass four-color knitted fabric, and can better meet the design needs of commercial clothing.

Please refer to Figures 6 and 7. In one embodiment, each of the lower knitting needles 26 has a first half-needle position 264, and each of the upper knitting needles 24 has a second half-needle position 241. Each of the lower knitting needles 26 has a first needle-closing starting point 265 (or 267) for needle-closing starting from the first half-needle position 264 in each of the two needle-closing states. Each of the upper knitting needles 24 has a second needle-closing starting point 242 for needle-closing starting from the second half-needle position 241. The second needle-closing starting point 242 is located between the positions of the first needle-closing starting points 265 and 267 at the knitting mouth 21. On the other hand, each of the lower knitting needles 26 has a first clearing point 266 in the two needle-reducing states, and each of the upper knitting needles 24 has a second clearing point 243 when active. The time point when the upper knitting needles 24 enter the second clearing point 243 is earlier than the time point when the lower knitting needles 26 enter the first clearing point 266.

21: Knitting mouth

22: Yarn feeding mouth

24: Upper knitting needle

26: Lower knitting needle

261: Hook point

264: First half stitch position

265: Starting point of the first stitch closing

30, 31: Yarn

301, 311: Feeding yarn path

32: Ending point

Claims (6)

A double-sided circular knitting machine includes a knitting mouth, at least one yarn feeding mouth for feeding two yarns toward the knitting mouth, at least one upper knitting needle corner, and a plurality of upper knitting needle corners guided by the at least one upper knitting needle corner. Knitting needles, at least one knitting needle peak, and a plurality of lower knitting needles guided by the at least one knitting needle peak, the two yarns are interlaced at a narrowing point located in the knitting mouth, the double-sided circular knitting machine features lies in: The double-sided circular knitting machine has a needle selector. Each of the lower knitting needles is controlled by the needle selector to have two narrowing states. Each of the lower knitting needles has a yarn hook in the two narrowing states. point, the positions of the two yarn hooking points at the knitting mouth are different, the distances between the two yarn hooking points and the narrowing points are different, each of the lower knitting needles hooks the yarn hooking point at one of the two yarn hooking points. The current relative position of the two yarns determines whether the loop will be one of the following: forward wrapping or reverse wrapping. A double-sided circular knitting machine as described in claim 1, wherein the double-sided circular knitting machine has at least two yarn feeding ports, each of the at least two yarn feeding ports feeds the two yarns into the knitting nozzle, and the colors of the multiple yarns fed into the knitting nozzle by the at least two yarn feeding ports are different from each other. A double-sided circular knitting machine as described in claim 1 or 2, wherein each of the lower knitting needles has a first half-needle position, each of the upper knitting needles has a second half-needle position, each of the lower knitting needles has a first needle closing starting point for closing the needles from the first half-needle position in each of the two needle closing states, and each of the upper knitting needles has a second needle closing starting point for closing the needles from the second half-needle position, and the second needle closing starting point is between the two first needle closing starting points at the knitting mouth position. A double-sided circular knitting machine as described in claim 3, wherein each of the two yarns has a yarn feeding path, the two yarn feeding paths are different, and the two extension lines of the two yarn feeding paths are staggered at the needle closing point. The double-sided circular knitting machine as claimed in claim 4, wherein each of the lower knitting needles has a first loop clearing point in the two narrowing states, and each of the upper knitting needles has a first loop clearing point when moving. At the second loop clearing point, the time point at which the upper knitting needles enter the second loop clearing point is earlier than the time point at which the lower knitting needles enter the first loop clearing point. A double-sided circular needle knitting machine as described in claim 1 or 2, wherein each of the lower knitting needles has a first clearing point in the two needle-closing states, and each of the upper knitting needles has a second clearing point when active, and the time point when the upper knitting needles enter the second clearing point is earlier than the time point when the lower knitting needles enter the first clearing point.