This application claims the priority benefit of Taiwan application serial no. 98141578, filed on Dec. 4, 2009. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of specification.
1. Field of the Invention
The present invention relates to a weaving machine. More particularly, the present invention relates to a weaving machine for fabricating three-dimensional woven fabrics.
2. Description of Related Art
Under the trend of globalization, the fabrics industry is facing severe competition, and fabric manufacturers have to continue researching and developing new technology and diversified products to keep up with the competition worldwide. Recently, not only fantastic exterior design of the textiles or fabrics is required, but also comfortable and protective fabrics are required. Accordingly, fabrics with multiple functionalities have become mainstream products.
Several methods for fabricating three-dimensional distance fabrics have been proposed by prior arts. For example, three-dimensional distance fabrics are often applied to fabrics for victim relieving, ships, protection buffer fabrics, flooring, and so on. The gap between two outer fabrics of the distance fabric is usually required to be greater than 1 centimeter. In addition, the gap between two outer fabrics of the three-dimensional distance fabrics is modified according to different applications. Nowadays, three-dimensional distance fabrics with superior gap are often fabricated by velvet weaving machines. The gap of the distance fabrics fabricated by velvet weaving machines is about 20 centimeters at most. Obviously, distance fabrics with a gap greater than 20 centimeters cannot be fabricated by velvet weaving machines. Accordingly, how to fabricate three-dimensional distance fabrics with a gap greater than 20 centimeters to meet different design requirements is an important issue to be solved.
The present application provides a weaving machine for fabricating three-dimensional woven fabrics having superior gap without significantly increasing costs.
The present application further provides a three-dimensional woven fabric having superior gap greater than 20 centimeters.
The application provides a weaving machine for weaving a three-dimensional woven fabric including two outer fabrics and a plurality of inter-yarns connected with the outer fabrics. The weaving machine includes a warp let-off mechanism, a plurality of heald frames, a picking mechanism, a beating-up mechanism, a yarn raising mechanism, and a take-up mechanism. The warp let-off mechanism includes at least two warp beams for providing and transferring a plurality of warps. A plurality of vertically arranged heald wires are supported by each of the heald frames, wherein each of the heald wires has a heald eye for the warps passing through. The warps are driven from two warp beams, and divided into two layers by the heald frames such that a shed is formed between them. The picking mechanism transfers wefts to pass through the shed between the warp layers. The beating-up mechanism is suitable for pushing the wefts such that the wefts and the warps are interwoven to form the outer fabrics, wherein the heald frames are located between the warp let-off mechanism and the beating-up mechanism. The yarn raising mechanism is suitable for passing through the shed and raising parts of the warps functioning as the inter-yarns. The take-up mechanism is suitable for adjusting and controlling latitude density of the three-dimensional woven fabric.
In an embodiment of the present application, the warp let-off mechanism has at least two back rests corresponding to the warp beams.
In an embodiment of the present application, the back rests include a first back rest and a second back rest. Parts of the warps functioning as the inter-yarns are provided by the first back rest, and other parts of the warps are provided by the second back rest. The first back rest is a movable active back rest.
In an embodiment of the present application, the movable active back rest moves towards the heald frames when the parts of the warps functioning as the inter-yarns are pulled by the yarn raising mechanism.
In an embodiment of the present application, the yarn raising mechanism moves to the top of the shed such that the parts of the warps functioning as the inter-yarns are pulled upwardly.
In an embodiment of the present application, the beating-up mechanism is located between the heald frames and the take-up mechanism. In addition, the yarn raising mechanism in the shed is suitable for moving towards the take-up mechanism such that the parts of the warps functioning as the inter-yarns are pulled laterally.
The application further provides a three-dimensional distance woven fabric including two outer fabrics and a plurality of inter-yarns connected with the outer fabrics, wherein a gap between the outer fabrics of the three-dimensional distance woven fabric is greater than 20 centimeters.
In an embodiment of the present application, the distance between the outer fabrics is greater than 50 centimeters.
In an embodiment of the present application, the distance between the outer fabrics is greater than 100 centimeters.
In an embodiment of the present application, the distance between the outer fabrics is greater than 200 centimeters.
In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible, several embodiments accompanied with figures are described in detail below.
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
FIG. 1′ schematically illustrates that the yarn raising mechanism extends into the shed and pulls parts of the warps.
In this embodiment, the warp let-off mechanism 110 has at least two back rests 112 corresponding to the warp beams 110A, 110B. Specifically, parts of the warps Y functioning as the inter-yarns I are provided by the first back rest 110A, and the other parts of the warps Y are provided by the second back rest 110B. Here, the warps Y provided from the second back rest 110B are used to fabricate the outer fabrics F1, F2.
In order to simultaneously move with the yarn raising mechanism 150, the first back rest 112A may be a movable active back rest. The first back rest 112A (i.e. the movable active back rest) moves towards the heald frames 120 simultaneously when the parts of the warps Y functioning as the inter-yarns I are pulled by the yarn raising mechanism 150. It is noted that the first back rest 112A may includes at least one movable roller while the second back rest 112B may includes at least one roller. The warps Y are transferred through rotation of the above-mentioned rollers.
In this embodiment, the gap G between the outer fabrics F1, F2 of the three-dimensional distance woven fabric T can be well adjusted through control of the length of the inter-yarns I. Specifically, the pulling range of the yarn raising mechanism 150 is relevant to the length of the inter-yarns I. In this embodiment, the pulling range of the yarn raising mechanism 150 ranges from about 10 centimeters to about 100 centimeters. Certainly, the pulling range of the yarn raising mechanism 150 can be properly modified to meet design requirements of other products. It is noted that the pulling direction is properly selected to avoid the moving of the yarn raising mechanism 150 from being obstructed when the inter-yarns I are pulled. Accordingly, by properly selecting the pulling range of the yarn raising mechanism 150, the three-dimensional distance woven fabric T having superior gap G can be integrally-woven.
The three-dimensional distance woven fabric T includes two outer fabrics F1, F2 and a plurality of inter-yarns I connected with the outer fabrics F1, F2, wherein a gap G distance between the outer fabrics F1, F2 of the three-dimensional distance woven fabric T is greater than 20 centimeters. In an embodiment of the present application, the gap G between the outer fabrics F1, F2 is greater than 50 centimeters, for example. In an alternative embodiment of the present application, the gap G distance between the outer fabrics F1, F2 is greater than 100 centimeters or 200 centimeters, for example. It is noted that pulling distance range of the yarn raising mechanism 150 is approximately a half one of the gap G.
In an alternative embodiment of the present application, the yarn raising mechanism 150 moves to the top of the shed A such that the parts of the warps Y functioning as the inter-yarns I can be pulled upwardly, as shown in
FIG. 1′ schematically illustrates that the yarn raising mechanism extends into the shed and pulls parts of the warps. Referring to FIG. 1′, the yarn raising mechanism 150 of this embodiment includes a driving unit 152 and a pulling unit 154 connected with the driving unit 152. Specifically, the pulling unit 154 is suitable for extending into the shed A between the warp layers Y1, Y2. In addition, the pulling unit 154 is driven by the driving unit 152 to move to the top of the shed A or to move towards the take-up mechanism 160. The design of the yarn raising mechanism 150 is limited to the mechanism illustrated in FIG. 1′, other mechanical designs may be used in the present application.
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The present application provides a weaving machine for fabricating three-dimensional woven fabrics having superior gap without significantly increasing costs. In addition, the three-dimensional distance woven fabrics of the present application may easily have a gap greater than 20 centimeters.
It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from the scope or spirit of the invention. In view of the foregoing, it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims and their equivalents.
Number | Date | Country | Kind |
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98141578 | Dec 2009 | TW | national |