TWI610002B - Yarn clipping and cutting structure for striping apparatus of circular knitting machine - Google Patents

Abstract

A clip-cutting yarn structure of a color changing device of a circular knitting machine, the color-changing device having a plurality of clip-cut yarn structures having two adjacent and synchronously driven clip-cut yarn-driven sheets, one of the clips One side of the cut yarn driving piece has a feeding piece, and a clamping piece is disposed between the clamping cutting piece and the feeding piece, and the cutting edge of the cutting piece has a hooking portion, and the hooking yarn Forming a guiding section; the other clamping yarn driving piece has all the yarn pieces with respect to the other side of the clamping piece, and the cutting edge of the clamping yarn driving piece also has a hooking part, the hooking part Forming a space segment that forms a drop with the position of the guiding segment; if it is ensured that the color yarn is stably sandwiched and the yarn is broken by only one side to prevent yarn breakage or yarn breakage from occurring, Effectively reduce the occurrence of product defect rate and improve the stability of each knitting weaving action.

Description

Clip-cutting yarn structure of color changing device of circular knitting machine

The present invention relates to a striping apparatus for a knitting machine, and more particularly to a color changing device for use in a circular knitting machine.

The use of a color changing device in a circular knitting machine has long been a well-known technique; however, depending on the function and structure of the circular knitting machine, the color changing device will produce a change in its setting, which is generally roughly divided into Both vertical and horizontal color-changing devices; for example, "STRIPING APPARATUS FOR CIRCULAR KNITTING MACHINES" of the US Pat. No. 6,655,176, which is incorporated by reference, and the "STRIPING SYSTEM FOR CIIRCULAR KNITTING MACHINE" of US Pat. No. 5,070,709, respectively, both disclose A vertical color changing device for feeding different colored yarns into the knitting needles of a knitting machine. In addition, U.S. Patent No. 5,218,845, "CIRCULAR KNITTING MACHINE STRIPER CONTROL SYSTEM", and U.S. Patent No. 7,036,343, "STRIPING APPARATUS OF A CIIRCULAR KNITTING MACHINE", respectively, disclose a horizontal color changing device for use in a knitting machine. And its controller.

However, whether it is a vertical or horizontal color changing device, the clip yarn structure of the above prior art color changing device has the following drawbacks:

1. In the prior art, due to the corners of the hooking portion and the gripping sheet of the clip-cut yarn, the color yarn is often broken during the yarn-splitting operation, and the other side of the color yarn is cut by the yarn. After the sheet finishes the yarn cutting action, a small length of yarn is formed, and when the yarn is subsequently released by the hooking portion, it is easily brought into the fabric with the knitting motion to affect the quality of the fabric.

2. Furthermore, since there is no design of the reserved color yarn in the prior art yarn-knitted structure, when the color yarn is torn in the yarn-splitting operation, the yarn-changing process of the color-changing device under high-speed operation In the case of the yarn, it is often the case that the yarn is not confirmed and the yarn is dropped.

The main object of the present invention is to solve all the above-mentioned problems and problems of the prior art, to ensure that the color yarn is stably gripped and to ensure that the color yarn is broken by only one side, so as to prevent the occurrence of yarn drop or yarn waste, and effectively reduce the yarn. The occurrence of product defect rate and the stability of the knitting motion of each knitting; the secondary purpose of the present invention is to maintain the original thickness of the yarn cutting mechanism of the color changing device, so as to facilitate the color changing device when mounted on the circular knitting machine. It can be matched with a circular knitting machine with a large number of yarn feeders.

According to the above object, the present invention provides a clip-cut yarn structure of a color changing device for a circular knitting machine, which is disposed on the circular knitting machine and is driven by the operation of the circular knitting machine. The device has a plurality of clip-cut yarn structures, characterized in that: the clip-cut yarn structure has two adjacent and synchronously driven clip-cut yarn-driven sheets, wherein one side of the clip-cut yarn-carrying sheet has a feeding sheet Between the clip-cutting yarn-carrying sheet and the yarn-feeding sheet, there is a gripping sheet piece contacting the clip-cutting strip driving piece, the clip-cutting yarn-carrying piece end edge has a hooking portion, and the hooking portion is formed with a hooking portion a guiding segment for performing a yarn clamping operation relative to the movement of the clamping piece; and the other cutting yarn driving piece has a cutting yarn piece contacting the cutting yarn driving piece with respect to the other side of the clamping piece. The clip cutting edge end edge also has a hooking portion, and the hooking portion is formed with a spacing portion for performing the yarn clamping operation with respect to the cutting yarn sheet displacement and forming a drop with the guiding portion position.

Further, the clipper yarn structure of the color changing device of the circular knitting machine, wherein the guiding segment has a first guiding slope near the clamping sheet.

Further, the clipper yarn structure of the color changing device of the circular knitting machine, wherein the guiding segment has a second guiding slope near the interval.

Furthermore, the clip-cut yarn structure of the color changing device of the circular knitting machine, wherein the clip-cut yarn structure further has a spacer between each other.

According to the above object, the present invention also provides a clip-cut yarn structure of a color changing device for a circular knitting machine, the color-changing device being disposed on the circular knitting machine and driven by the operation of the circular knitting machine. The color changing device has a plurality of clip-cut yarn structures, wherein the clip-cut yarn structure has a clip-cut yarn driving piece, and the clip-cut yarn driving piece has a feeding piece on one side thereof, and is located at the clip-cutting yarn driving piece and The yarn feeding sheet has a clamping piece which is in contact with the cutting yarn driving piece, and the other side of the clamping cutting piece has a cutting piece which is in contact with the cutting yarn driving piece; The end of the cut yarn driving piece has a hooking portion, the hooking portion has a guiding portion for performing the yarn clamping action with respect to the displacement of the clamping sheet, and a yarn clamping action is performed with respect to the displacement of the cutting sheet and the guiding portion The position of the leading segment forms an interval of the drop.

Further, the clipper yarn structure of the color changing device of the circular knitting machine, wherein the guiding segment has a first guiding slope near the clamping sheet.

Further, the clipper yarn structure of the color changing device of the circular knitting machine, wherein the guiding segment has a second guiding slope near the interval.

Furthermore, the clip-cut yarn structure of the color changing device of the circular knitting machine, wherein the clip-cut yarn structure further has a spacer between each other.

According to the above technical solution, the beneficial effects achieved by the present invention over the prior art are as follows: 1. The color changing device may pull the color yarn under the high speed action of the circular knitting machine, and the clip yarn is driven by the present invention. The yarn retaining section can be formed in the process of cutting the yarn, so that the yarn can be effectively prevented from falling off the yarn and the yarn is dropped. 2. The guiding section of the hooking part of the present invention The first guiding inclined surface is disposed between the clamping piece, so that the first guiding inclined surface of the corner is removed, the color yarn can be effectively prevented from being pulled by the yarn clamping operation, and the color yarn is firstly clamped. Continuously cutting the yarn from the other side of the hooking portion and the slitting piece can ensure the effect of breaking the yarn by only one side, and can effectively prevent the formation of the yarn, thereby improving the quality of the fabric.

The preferred embodiment and detailed technical content of the clip-cut yarn structure of the color changing device of the circular knitting machine of the present invention are as described later. First, please refer to FIG. 1 to FIG. 5 simultaneously. FIG. 1 is a perspective view showing a three-dimensional assembly diagram, an exploded view, and a partial enlarged view of the clip-cut yarn driving piece according to the first preferred embodiment of the present invention, and a top view enlarged view thereof, and a clip. An enlarged schematic view of a partially cutaway view of the cut yarn structure. As is apparent from the drawings, the present invention provides a clip-cut yarn structure of a color changing device for a circular knitting machine, and the color-changing device 1 (vertical setting application) is disposed on the circular knitting machine (this The position of the invention can be referred to the prior art provided in the text, and is driven by the operation of the circular knitting machine. The color changing device 1 has a cover plate 10 on each side, and between the two cover plates 10 The plurality of clip-cutting yarn structures 2, and the clip-cutting yarn structure 2 may further be provided with a spacer sheet 7 (which may also be omitted in the implementation), and the clip-cut yarn structure 2 has two adjacent sheets and is synchronously driven. The clipper-carrying strips 3a, 3b, one of the clip-cutting strips 3a has a feeding sheet 6 on one side thereof, and has a clip between the clip-cutting strip-moving sheet 3a and the feeding sheet 6 The cutting yarn drives the sheet 3a to contact the gripping sheet 4, and the end of the clip-cutting yarn-carrying sheet 3a has a hooking portion 30a, and the hooking portion 30a is formed with a guide for performing the gripping action with respect to the displacement of the gripping sheet 4. In the segment 31, the guiding segment 31 has a section near the clamping sheet 4 which can effectively prevent the color yarn 8 from being pulled by the yarn clamping action. The guiding surface 31 can also be provided with a second guiding inclined surface 312 for preventing the color yarn 8 from being pulled by the yarn clamping action at the position close to the spacing portion 32; the other cutting yarn driving piece 3b is opposite On the other side of the gripping sheet 4, there is a cut piece 5 which is in contact with the clip-cut strip 3b, and the edge of the clip-cut strip 3b also has a hooking portion 30b, the hooking portion 30b is formed with a spacer 32 which is configured to perform a yarn-splitting operation with respect to the slitting of the slitting sheet 5 and to form a drop with the position of the leading portion 31.

Please also refer to "Fig. 5" to "Fig. 10", which is a schematic enlarged view of the continuous operation of the clip-cut yarn structure of Fig. 1 of the present invention. As can be clearly seen from the figure, when the hooking portion 30b of the clip-cut yarn-carrying piece 3b completes the yarn-cutting operation, as shown in Fig. 5, the hooking portion 30a of the clip-cut yarn-driven sheet 3a The coloring yarn 8 is tightly clamped with the gripping sheet 4, and the colored yarn 8 is additionally formed at the spacer 32 to securely retain the yarn of the colored yarn 8 from the gripping sheet 4. a segment 81, and when the yarn feeding sheet 6 is operated to cause the color yarn 8 to be used again, the color yarn 8 between the hooking portion 30a and the clamping sheet 4 is not driven by the cutting yarn. When the sheets 3a, 3b have not been simultaneously extended and protruded (as shown in "Fig. 6"), when the clip-cutting yarn-carrying sheets 3a, 3b are simultaneously extended and the color yarn 8 is separated from the hooking portion 30a and Between the gripping sheets 4 (as shown in Fig. 7), until the clip-cutting yarn-carrying sheets 3a, 3b are completely extended and the hooking operation is performed to hook the colored yarns 8 (as shown in Fig. 8) The color yarn 8 in which the guiding segment 31 is located is first contacted to the clamping sheet 4, and the hook is brought into contact with the yarn clamping sheet 3a, 3b. The yarn portion 30a starts to be spliced with the yam sheet 4 (As shown in Fig. 9), when the hooking portion 30a of the clip-cut yarn driving sheets 3a, 3b continues the yarn-splitting operation, the color yarn 8 is continued to the yarn-bonding sheet 4 and the hook yarn. A more accurate yarn clamping operation is performed between the portions 30a, and then the color yarn 8 is subjected to a yarn cutting operation after the hooking portion 30b of the clip-cut yarn driving piece 3b comes into contact with the cutting yarn sheet 5 until the color yarn is pressed. 8 is completely cut and the color yarn 8 is surely completely sandwiched by the yarn clamping sheet 4 and the hooking portion 30a (as shown in Fig. 10); it is noted that the present invention is known from the above. The clip-cutting yarn driving piece 3a, 3b forms the yarn-filling safety retaining section 81 at the interval 32 during the process of cutting the yarn, so that the yarn-filling safety retaining section 81 can effectively prevent the color changing device 1 from operating at high speed. In the case where the color yarn 8 is detached from the yam sheet 4 and the yarn is dropped, the first guiding slope between the guiding portion 31 of the hooking portion 30a and the yam sheet 4 of the present invention is also known. 311. Therefore, the design of the first guiding slope 311 for removing the corners can effectively prevent the color yarn 8 from being broken by the acute angle in the yarn clamping operation, and the technology of the present invention can be treated first. After the color yarn 8 is caught by the yarn, the yarn-cutting portion 30b and the yarn-cutting sheet 5 are further subjected to the yarn-cutting operation, so that the effect of the complete yarn clamping and the effect of breaking the yarn by only one side can be ensured. Therefore, the formation of the yarn waste is effectively prevented, thereby improving the quality of the fabric; in addition, since the color changing device 1 of the present invention can maintain the original thickness of the yarn cutting mechanism 2, the color changing device 1 of the present invention is installed in the existing In the case of a circular knitting machine, it is also compatible with a circular knitting machine with a large number of yarn feeders.

In addition, please refer to FIG. 11 to FIG. 12 at the same time; FIG. 1 is a partially enlarged schematic view showing another embodiment of the clip-cut yarn driving piece of FIG. 1 of the present invention and an enlarged cross-sectional view taken along line A-A thereof. As can be clearly seen from the figure, the difference between the clip-cut yarn driving piece 3 and the clip-cutting yarn driving piece 3a, 3b shown in "Fig. 1" to "Fig. 10" is that the clip-cut yarn driving piece 3 is different. It is only composed of a single piece (integrally formed), because the hooking portion 30 of the clip-cutting yarn-carrying piece 3 is operated in a synchronous manner when the yarn-cutting operation is performed, so it is possible to The present invention is embodied; therefore, the present invention also provides a clip-cut yarn structure of a color changing device for a circular knitting machine, the color changing device 1 being disposed on the circular knitting machine and operated by the circular knitting machine The color changing device 1 has a cover plate 10 on each side thereof, and a plurality of clip-cut yarn structures 2 between the two cover plates 10, and the clip-cut yarn structure 2 can also be provided with a spacer between each other. 7. The clip-cutting yarn structure 2 has a clip-cutting yarn-carrying sheet 3, and the clip-cutting yarn-carrying sheet 3 has a feeding sheet 6 on one side thereof, and is located at the clip-cutting yarn-carrying sheet 3 and the feeding sheet 6 There is a clamping sheet 4 which is in contact with the clip-cutting strip 3, and the other side of the clip-cutting strip 3 has a strip with the clip The cutting piece 5 is in contact with the cutting piece 5; the end edge of the clamping cutting piece 3 has a hooking portion 30, and the hooking portion 30 has a guiding portion 31 for performing a yarn clamping action with respect to the displacement of the clamping sheet 4. The guiding section 31 has a first guiding slope 311 near the clamping sheet 4, and the guiding section 31 has a second guiding slope 312 near the spacing section 32, and a relatively opposite cut surface The yarn sheet 5 is displaced to perform a yarn clamping action and forms a gap 32 with the position of the guide segment 31.

Finally, please refer to FIG. 13 to FIG. 16; FIG. 13 is a perspective view showing a three-dimensional assembly diagram, an exploded view, and a partially enlarged schematic view of the clip-cut yarn driving piece and an enlarged cross-sectional view taken along line B-B thereof. As is apparent from the drawings, the second preferred embodiment of the present invention differs from the first preferred embodiment in that the color changing device 1 of the second preferred embodiment is a horizontal setting application; In addition, although the spacer 7 of the first preferred embodiment does not appear in the second preferred embodiment, it may of course be additionally added in the second preferred embodiment; it is worth mentioning that The structure of the clip-cutting yarn-carrying sheets 3a, 3b of the color changing device 1 can be completely and clearly seen in "Fig. 15" and "Fig. 16", and is indeed a structural feature and a clip with the first preferred embodiment. The yarn cutting action is identical and can be implemented accordingly. Therefore, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made according to the claims of the present invention should still belong to the present invention. The patent covers the scope.

1‧‧‧ color changing device
10‧‧‧ Cover panel
2‧‧‧Cut-cut yarn structure
3‧‧‧Clip cut yarn
3a‧‧‧Clip cut yarn
3b‧‧‧Clip cut yarn
30‧‧‧Hooking Department
30a‧‧‧Hooking Department
30b‧‧‧Hooking Department
31‧‧‧ guiding section
311‧‧‧First guiding slope
312‧‧‧Second inclined slope
32‧‧‧ interval
4‧‧‧Clips
5‧‧‧cut yarn
6‧‧‧Feed film
7‧‧‧Isolation film
8‧‧‧Color yarn
81‧‧‧Knitting safety retaining section

FIG. 1 is a perspective view of a three-dimensional assembly according to a first preferred embodiment of the present invention. Figure 2 is an exploded perspective view of Figure 1 of the present invention. Fig. 3 is a partially enlarged schematic view showing the clip-cut yarn driving piece of Fig. 1 of the present invention. Fig. 4 is a schematic enlarged plan view showing "Fig. 3" of the present invention. 5 to 10 are enlarged schematic views showing a continuous operation of a portion of the clip-cut yarn structure of the "Fig. 1" of the present invention. Figure 11 is a partially enlarged schematic view showing another embodiment of the clip-cut yarn driving piece of Figure 1 of the present invention. Fig. 12 is an enlarged cross-sectional view taken along line A-A of Fig. 11 of the present invention. Figure 13 is a perspective view of a three-dimensional assembly of a second preferred embodiment of the present invention. Figure 14 is an exploded perspective view of Figure 13 of the present invention. Fig. 15 is a partially enlarged schematic view showing the clip-cut yarn driving piece of Fig. 13 of the present invention. Figure 16 is an enlarged cross-sectional view taken along line B-B of Figure 15 of the present invention.

2‧‧‧Cut-cut yarn structure

3a‧‧‧Clip cut yarn

3b‧‧‧Clip cut yarn

30a‧‧‧Hooking Department

30b‧‧‧Hooking Department

31‧‧‧ guiding section

311‧‧‧First guiding slope

312‧‧‧Second inclined slope

32‧‧‧ interval

4‧‧‧Clips

5‧‧‧cut yarn

6‧‧‧Feed film

8‧‧‧Color yarn

81‧‧‧Knitting safety retaining section

Claims (8)

A clip-cutting yarn structure of a color changing device of a circular knitting machine, wherein the color changing device (1) is disposed on the circular knitting machine and driven by the operation of the circular knitting machine, the color changing device (1) The utility model has a plurality of clip-cut yarn structures (2), characterized in that: the clip-cut yarn structure (2) has two adjacent and synchronously driven clip-cut yarn-driven sheets (3a, 3b), wherein the clip-cut yarn is cut. One side of the driving piece (3a) has a feeding piece (6) for guiding a color yarn (8), and a clip and a clip between the cutting piece driving piece (3a) and the feeding piece (6) The yarn cutting piece (3a) contacts the clamping piece (4), and the edge of the clamping cutting piece (3a) has a hooking portion (30a) for performing a yarn clamping action with respect to the displacement of the clamping piece (4). The hooking portion (30a) is formed with a guiding segment (31) for carrying the colored yarn (8) to reflex the colored yarn (8) at a reverse point after the completion of the yarn clamping operation; The clip-cutting yarn driving piece (3b) has a cutting yarn piece (5) contacting the cutting-cutting yarn driving piece (3b) with respect to the other side of the yarn-carrying piece (4), and the cutting-cut yarn driving piece (3b) the end edge also has a displacement relative to the slitting piece (5) to perform the yarn clamping action The hooking portion (30b) and the hook portion (30a, 30b) are formed with a yarn clamping action relative to the cutting yarn (5) displacement and a gap with the guiding portion (31) to accommodate a gap The colored yarn (8) which is folded back forms a spacer (32) of the yarn retaining section (81). The clip-cutting yarn structure of the color changing device of the circular knitting machine according to claim 1, wherein the guiding section (31) has a first guiding slope (311) adjacent to the clamping sheet (4). The clip-cutting yarn structure of the color changing device of the circular knitting machine according to claim 2, wherein the guiding section (31) has a second guiding slope (312) near the spacing section (32). The clip-cut yarn structure of the color changing device of the circular knitting machine according to the first, second or third aspect of the invention, wherein the clip-cut yarn structure (2) further has a spacer (7) between each other. A clip-cutting yarn structure of a color changing device of a circular knitting machine, wherein the color changing device (1) is disposed on the circular knitting machine and driven by the operation of the circular knitting machine, the color changing device (1) have a plurality of clip-cut yarn structures (2), characterized in that: the clip-cut yarn structure (2) has a clip-cut yarn-driven sheet (3), and the clip-cut yarn-carrying sheet (3) has a guide color yarn on one side ( 8) a feeding sheet (6), and between the clip cutting belt driving piece (3) and the feeding sheet (6), a clamping sheet (4) contacting the cutting yarn driving piece (3) And the other side of the clip-cut yarn driving piece (3) has a cut piece (5) which is in contact with the clip-cut piece (3); and the end of the clip-cut piece (3) has a hooking portion (30) for performing a yarn clamping operation with respect to the movement of the gripping sheet (4), the hooking portion (30) having a color yarn (8) for the color after the yarn clamping operation is completed The yarn (8) is folded at a reverse point by a guiding section (31), and a gap with the guiding section (31) is formed to accommodate the re-folded colored yarn (8) to form a yarn-filling safety. The interval (32) of the segment (81) is reserved. The clip-cutting yarn structure of the color changing device of the circular knitting machine according to claim 5, wherein the guiding section (31) has a first guiding slope (311) adjacent to the clamping sheet (4). The clip-cutting yarn structure of the color changing device of the circular knitting machine according to claim 6, wherein the guiding section (31) has a second guiding slope (312) near the spacing section (32). A clip-cutting yarn structure of a color changing device for a circular knitting machine according to the invention of claim 5, 6 or 7, wherein the clip-cut yarn structure (2) further has a spacer (7) therebetween.