Patent Application
20180093847
This invention relates generally to yarn cutting assemblies and methods for use in yarn and other textiles manufacturing and/or processing. More specifically, assemblies and methods are provided for the automated cutting of loose or stretched yarn.
In the manufacture and processing of threads and yarn and in the weaving of cloth, long substantially continuous lengths or strands of thread or yarn are handled and processed by passing the strands through various handling and/or treating apparatus of a yarn system. For example, a yarn accumulator can be configured to accumulate and contain processed yarn in preparation for winding the yarn onto spools or bobbins.
During manufacturing and handling, portions of the yarn can be undesirably stretched in the process. Conventionally, an operator would manually cut the stretched yarn when observed to prevent the stretched yarn from being used as first quality yarn. This method has obvious manpower limitations. The demands of the operator's job requirements typically do not allow for thorough inspection for stretched yarn. Unless an operator happened to be standing near the yarn system during an instance of stretched yarn, most stretched yarn would continue processing as first quality yarn. In addition, the degree of stretch can vary as it is determined subjectively by the operator.
When this stretched yarn is woven or tufted into a finished product, such as, for example and without limitation, carpet, the variations in the yarn can be readily apparent. Thus, there is a need in the art for an automated means of cutting yarn that has been undesirably stretched.
In accordance with the purpose(s) of this invention, as embodied and broadly described herein, this invention, in one aspect, relates to assemblies, systems and methods for automated cutting of loose and/or stretched yarn.
Yarn being processed in a yarn system can travel in a yarn direction. For example, yarn being processed can be wrapped around or otherwise accumulated in a yarn accumulator. Stretched or loose yarn can hang away from the yarn system, including the yarn accumulator, at a different position relative than unstretched, first quality yarn.
In one aspect, the assembly for automatically cutting stretched yarn comprises at least one cutter head configured to cut yarn and at least one mounting arm configured to position the at least one cutter head a predetermined distance from a portion of the yarn system. In another aspect, the at least one mounting arm can have a proximal end coupled to a portion of the yarn system and a distal end coupled to a portion of the at least one cutter head. As yarn travels towards an exit end of the yarn system, stretched yarn hanging away from the yarn system can be cut by the at least one cutter head.
In one aspect, the at least one cutter head comprises a cutter body and a cutting member. The cutting member can be substantially planar, such as a blade and the like. In another aspect, the cutting member can have a cutting edge positioned along a cutter longitudinal axis.
In a further aspect, the at least one cutter head can comprise a plurality of cutter heads. Similarly, the at least one mounting arm can comprise a plurality of mounting arms. For example, a first cutting head of the plurality of cutting heads can be coupled to a first mounting arm of the plurality of mounting arms, a second cutting head of the plurality of cutting heads can be coupled to a second mounting arm of the plurality of mounting arms and so on. In this aspect, the cutter longitudinal axis of the first cutter head of the plurality of cutter heads can be substantially parallel to the cutter longitudinal axis of the second cutter head. Alternatively, the first cutter head of the plurality of cutter heads can be positioned so that the cutter longitudinal axis is a substantial mirror image of the cutter longitudinal axis of the second cutter head with respect to a plane that bisects the yarn system along a longitudinal axis of the yarn system.
In yet another aspect, the at least one mounting arm comprises a mounting finger extending from the distal end of the at least one mounting arm to position the cutter head in a desired position and/or orientation relative to the yarn system. In one aspect, the mounting finger can have a longitudinal axis extending at a first finger angle relative to a longitudinal axis of the mounting arm. In another aspect, the mounting finger can be positioned in a plane at a second finger angle relative to the longitudinal axis of the mounting arm. That is, the mounting finger can extend away from the respective mounting arm at a first finger angle and the mounting finger can be in a plane that is at a second finger angle relative to the respective mounting arm. The mounting finger then can be configured to position a cutter head in a desired position and orientation relative to the yarn system.
In use, yarn travels in the yarn direction through the yarn system. Undesired loose or stretched yarn can hang off the yarn system a predetermined distance away from yarn that is first quality. In one aspect, the at least one cutter head can be positioned relative to a frame of the system so that as yarn travels in the yarn direction, stretched yarn can be urged into contact with the cutting member of the at least one cutter head to be cut automatically. First quality yarn (unstretched yarn) can travel past the at least one cutter head without contacting the cutting member.
Additional advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the appended claims. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several aspects of the invention and together with the description, serve to explain the principles of the invention.
The present invention may be understood more readily by reference to the following detailed description, examples, drawings, and claims, and their previous and following description. However, before the present devices, systems, and/or methods are disclosed and described, it is to be understood that this invention is not limited to the specific devices, systems, and/or methods disclosed unless otherwise specified, as such can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting.
The following description of the invention is provided as an enabling teaching of the invention in its best, currently known embodiment. To this end, those skilled in the relevant art will recognize and appreciate that many changes can be made to the various aspects of the invention described herein, while still obtaining the beneficial results of the present invention. It will also be apparent that some of the desired benefits of the present invention can be obtained by selecting some of the features of the present invention without utilizing other features. Accordingly, those who work in the art will recognize that many modifications and adaptations to the present invention are possible and can even be desirable in certain circumstances and are a part of the present invention. Thus, the following description is provided as illustrative of the principles of the present invention and not in limitation thereof.
As used throughout, the singular forms “a,” “an” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a yarn” can include two or more such yarns unless the context indicates otherwise.
Ranges can be expressed herein as from “about” one particular value, and/or to “about” another particular value. When such a range is expressed, another aspect includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent “about,” it will be understood that the particular value forms another aspect. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.
As used herein, the terms “optional” or “optionally” mean that the subsequently described event or circumstance may or may not occur, and that the description includes instances where said event or circumstance occurs and instances where it does not.
For convenience and clarity, as used herein, the term “yarn system” can refer to any apparatus used to process yarn in a yarn system, such as a yarn accumulator and the like.
The present invention may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein and to the Figures and their previous and following description.
In one broad aspect, the present invention comprises assemblies and methods for cutting yarn, thread and/or other textiles during manufacturing and/or processing. More specifically, assemblies and methods are provided for automated cutting of loose or stretched yarn that has been stretched beyond a predetermined amount.
With reference to
As illustrated in
According to one aspect, at least a portion of the cutting member 26 of the cutter head 14 can be substantially planar. In another aspect, the cutting edge 32 of the cutting member can be positioned along a cutter longitudinal axis LC.
Referring again to
With reference now to
The length 44 of the mounting arm can be predetermined so that in use, the at least one cutter head is a desired distance from the yarn and/or yarn system. For example, the length 44 of the mounting arm can be about 1 inch, about 2 inches, about 3 inches, about 4 inches, about 5 inches, about 6 inches, about 7 inches, about 8 inches, about 9 inches, about 10 inches, about 11 inches, about 12 inches, about 13 inches, about 14 inches, or greater than about 14 inches.
In one aspect, and as illustrated in
Optionally, in one aspect, the at least one cutter head 14 can comprise a plurality of cutter heads. In this aspect, the plurality of cutter heads can comprise a first cutter head 14a, a second cutter head 14b, and a third cutter head 14c, though any number of cutter heads are contemplated. For example, the cutter system 10 can comprise one, two, three four, five, six or more than six cutter heads. Each cutter head can be positioned and/or orientated on the at least one mounting arm 15 such that each cutter head of the plurality of cutter heads is a predetermined distance/and or orientation from the yarn 12 and/or yarn system 16. In another aspect, the at least one mounting arm 15 can comprise a plurality of mounting arms. In this aspect, the plurality of mounting arms can comprise a first mounting arm 15a, a second mounting arm 15b, and a third mounting arm 15c, though any number of mounting arms are contemplated. For example, the cutter system 10 can comprise one, two, three, four, five, six or more than six mounting arms.
In a further aspect, each mounting arm 15 of the plurality of mounting arms can be formed substantially the same, though at least one mounting arm of the plurality of mounting arms can be different than the other mounting arms. Alternatively, at least two mounting arms of the plurality of mounting arms can be substantial mirror images of each other. In still another aspect, each mounting arm 15 of the plurality of mounting arms can be substantially the same, different from and/or mirror images of each other.
In one aspect and as illustrated in
If the at least one mounting arm 15 comprises a plurality of mounting arms, each mounting arm can be formed from individual pieces that can be separately attached to the frame 38 of the yarn system 16. Alternatively, in one aspect, at least two mounting arms 15 of the plurality of mounting arms can be formed or coupled together with the base member 48 and can be attached to the frame of the yarn system as a single, monolithic unit, as illustrated in
To assemble the cutter assembly 10, the at least one cutter head 14 can be coupled to the at least one mounting arm 15 with bolts 36, welds, fasteners and the like. The at least one mounting arm can be coupled to the frame 38 of the yarn system 16 such that the cutting edge 32 of the cutting member 26 of the cutter head can be exposed to yarn 12 traveling in the yarn direction. In one aspect, the at least one cutter head can be positioned relative to the frame of the yarn system so that loose yarn (yarn that has been stretched beyond a predetermined level and is therefore not first quality yarn) is urged into contact with the cutter head to be cut.
In another aspect, the cutting member 26 can be positioned so that the cutter longitudinal axis LC of the cutting edge 32 is substantially parallel to the longitudinal axis LA of the yarn system 16. Alternatively, the cutting member can be positioned so that the cutter longitudinal axis LC of the cutting edge is at an acute angle relative to the longitudinal axis LA of the system. That is, the cutting member 26 can be positioned so that an angle formed between the longitudinal axis LC of the cutting edge 32 and the longitudinal axis LA of the system 16 is about 0 degrees, about 5 degrees, about 15 degrees, about 20 degrees, about 25 degrees, about 30 degrees, about 35 degrees, about 40 degrees, about 45 degrees, about 50 degrees, about 55 degrees, about 60 degrees, about 65 degrees, about 70 degrees, about 75 degrees, about 80 degrees, about 85 degrees and about 90 degrees. As the yarn travels in the yarn direction, any yarn guided by the yarn guide to the cutting edge 26 will be urged into contact with the cutting edge and the yarn can be cut to indicate that the yarn is not first quality yarn.
In one aspect, if the at least one cutter head 14 comprises a plurality of cutter heads, each cutter head can be coupled to the at least one mounting arm 15 and the at least one mounting arm can be coupled to the frame 38 of the yarn system 16. For example, if the plurality of cutter heads 14 comprises three cutter heads, the at least one mounting arm can comprise three mounting arms. In this example, the first cutter head 14a can be coupled to the first mounting arm 15a, the second cutter head 14b can be coupled to the second mounting arm 15b and the third cutter head 14c can be coupled to the third mounting arm 15c. It is of course contemplated however that 0, 2, 3, 4, 5 or more cutter heads can be coupled to a single mounting arm.
Each cutter head 14 of the plurality of cutter heads can be positioned a predetermined distance from the yarn system 16 and/or yarn 12 in the yarn system. In one aspect, each cutter head 14 of the plurality of cutter heads can be positioned an equal distance from the yarn 12 and/or the yarn system 16. Alternatively, at least one cutter head 14 of the plurality of cutter heads can be positioned a different distance from the yarn 12 and/or the yarn system 16 than another cutter head. For example, at least a portion of the cutting edge 32 of each cutter head can be positioned about ¼ inch from the first quality yarn of the yarn system. In other example, at least a portion of the cutting edge of the cutting member 26 can be positioned about ½, about ¾ inch, about 1 inch, about 1¼ inch, about 1½ inch, about 1¾ inch, about 2 inches, or more than about 2 inches from the first quality yarn 12 of the yarn system 16.
In one aspect, the cutter longitudinal axis LC of the cutting edge 32 of at least one cutter head 14 of the plurality of cutter heads can be positioned substantially parallel to the cutter longitudinal axis of another cutter head. That is, the cutter longitudinal axis of at least two cutter heads 14 of the plurality of cutter heads can be substantially parallel to each other. In another aspect, the cutter longitudinal axis LC of each cutter head of the plurality of cutter heads can be substantially parallel to each other. Optionally, in one aspect, the cutter longitudinal axis LC of at least one cutter head 14 of the plurality of cutter heads can be positioned so that it is a substantial mirror image of the cutter longitudinal axis of another cutter head with respect to a plane that bisects the yarn system 16 along the longitudinal axis LA of the system. As can be appreciated then, each cutting member 26 can be positioned substantially parallel to another cutting member, or at any angle relative to another cutting member.
In use, yarn 12 travels in the yarn direction along the yarn system 16 from the entry end 18 towards the exit end 22 of the system. Loose yarn (yarn that has been stretched beyond a predetermined level and is therefore undesired) can hang off the yarn system a predetermined distance away from yarn 12 that is first quality. In one aspect, the at least one cutter head 14 can be positioned relative to the frame of the system so that loose yarn is cut. That is, as yarn travels in the yarn system, stretched and/or loose yarn hanging away from the first quality yarn can be guided by the taper of the yarn guide 28 towards the cutting edge 32 of the at least one cutter head 14 to be cut automatically. Yarn that is not stretched (i.e., first quality yarn) can pass the cutter head without being cut. A plurality of cutter heads can be positioned as desired relative to the system so that loose yarn hanging away from the sides and/or the bottom of the system can be cut without requiring intervention by an operator.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. Other aspects of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
This application is a divisional application of U.S. Application Ser. No. 14/524,520, filed Oct. 27, 2014, which claims the benefit of United States Provisional Application No. 61/895,824, filed Oct. 25, 2013, which applications are hereby incorporated herein by reference in their entirety.
| Number | Date | Country | |
|---|---|---|---|
| 61895824 | Oct 2013 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 14524520 | Oct 2014 | US |
| Child | 15833104 | US |
