CN108588974B - Variable-pitch combined spiral weft insertion device and weaving method thereof - Google Patents
Variable-pitch combined spiral weft insertion device and weaving method thereof Download PDFInfo
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- CN108588974B CN108588974B CN201810346041.4A CN201810346041A CN108588974B CN 108588974 B CN108588974 B CN 108588974B CN 201810346041 A CN201810346041 A CN 201810346041A CN 108588974 B CN108588974 B CN 108588974B
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- weft
- weft insertion
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
- D03D47/26—Travelling-wave-shed looms
- D03D47/262—Shedding, weft insertion or beat-up mechanisms
- D03D47/263—Weft insertion and beat-up mechanisms
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Woven Fabrics (AREA)
Abstract
The invention discloses a combined spiral weft insertion device with variable pitch and a weaving method thereof, for fabrics with different weave structures, the weft insertion device with variable pitch is adopted, namely the pitch is unequal, and the part with large pitch can contain 2 or more warps to form complex weave structures such as 2/1 or 3/1; the part with small pitch can only contain 1 warp yarn, and the weft yarn forms a structure interwoven by 1/1 plain weave after passing through; for the fabric with a simple structure, a spiral weft insertion device can be adopted for weft insertion, so that weft yarns and warp yarns are interwoven; for the fabric with a complex weave structure, in the weaving process of finishing a weave circulation, a group of weft inserters with different screw pitches can be adopted according to different distribution of warp and weft yarn interweaving points in the fabric weave structure. The invention directly adopts the weft insertion mode of spiral movement to carry out weft insertion, finishes the interweaving with warp yarns while carrying out weft insertion, saves a complex weft insertion mechanism and improves the working efficiency.
Description
Technical Field
The invention belongs to the field of weaving devices, and particularly relates to a combined spiral weft insertion device with variable pitch and a weaving method thereof.
Background
In the prior art, the weaving of the woven fabric is that warp yarns pass through an opening mechanism (such as a heald frame) to be separated into an upper layer and a lower layer, after a shed is formed, weft yarns are led through the shed to be interwoven with the warp yarns, and then the weft yarns are beaten into a weaving opening through a reed to complete weaving, so that the warp yarns are separated from the upper part and the lower part to form the shed is a precondition for weaving.
disclosure of Invention
The purpose of the invention is as follows: in order to solve the defects of the prior art, the invention provides a combined spiral weft insertion device with a variable pitch and a weaving method thereof.
The technical scheme is as follows: the combined spiral weft insertion device with the variable screw pitch comprises a holder and a weft inserter, wherein the holder is fixedly connected with the weft inserter, and the holder is positioned at the head end or the tail end of the weft inserter and is used for holding weft yarns; the weft insertion device is of a spiral type and is used for drawing weft yarns to move spirally, and for fabrics with different weave structures, a variable-pitch weft insertion device is adopted, namely the pitch is unequal, and a part with a large pitch can contain 2 or more warp yarns to form a complex weave structure such as 2/1 or 3/1; the part with small pitch can only contain 1 warp yarn, and the weft yarn forms a structure interwoven by 1/1 plain weave after passing through;
For the fabric with a simple structure, a spiral weft insertion device can be adopted for weft insertion, so that weft yarns and warp yarns are interwoven; for the fabric with a complex weave structure, in the weaving process of finishing a weave circulation, a group of weft inserters with different screw pitches can be adopted according to different distribution of warp and weft yarn interweaving points in the fabric weave structure.
According to the weaving method of the combined spiral weft insertion device with the variable pitch, the gripper of the opening-free weft insertion weaving device clamps weft yarns, then the weft insertion device moves leftwards along the direction vertical to the warp yarns, so that the weft yarns are driven to rotate around the adjacent warp yarns along the spiral line in the same rotating track of the weft insertion device in the left-handed mode, the weft yarns are sequentially interwoven with the warp yarns of a warp yarn system in an up-down alternating mode, and the number of the warp yarns accommodated at each time is changed according to the pitch, specifically: the weft yarns are wound below n warp yarns and then wound above m adjacent warp yarns, and the weft yarns are circularly repeated below k warp yarns, so that one-time weft insertion is completed from one side of a warp yarn system, after the weft insertion, the shedding-free weft insertion weaving device exits from a shed in a reverse rotation mode, namely a right-handed rotation mode, and then the reed drives the weft yarns into a weaving opening to complete first weft weaving;
And after the weft insertion weaving of the first weft is finished, then the spiral weft insertion device introduces a second weft into the shed in the same way in a way of being opposite to the rotating direction of the first weft, namely in a right-handed way, so that the second weft insertion is finished, after the weft insertion is finished, the spiral weft insertion device retreats from the shed in a left-handed way, then the weft is tied up by a reed so as to finish the second weft weaving, and the rest is done so as to finish the fabric weaving.
As an optimization: when the second weft is inserted, the rotation direction of the spiral weft insertion device is opposite to that of the first weft, and the like: during weft insertion of odd weft yarns, the spiral weft insertion device rotates leftwards, and during weft insertion of even weft yarns, the spiral weft insertion device rotates rightwards, so that the weaving rule of the next weft warp yarn and weft yarn tissue points is opposite.
has the advantages that: the specific advantages of the invention are as follows:
1. the invention does not need to form a shed for dividing warp into an upper layer and a lower layer before weft insertion, finishes the interweaving of the warp and the weft through the opening and closing movement of the shed after the weft insertion, directly carries out the weft insertion in a spiral moving weft insertion mode, finishes the interweaving with the warp during the weft insertion, saves a complex weft insertion mechanism, improves the working efficiency, saves the power consumption and has the energy-saving effect.
2. the weft yarn in the invention does not move along a straight line, but moves along a spiral track, and the weft yarn is clamped by a spiral weft insertion device to rotate along a spiral line from one side of the selvedge in the direction vertical to a warp yarn system, so that the weft yarn sequentially bypasses adjacent warp yarns (for example, the weft yarn is wound below a first warp yarn and then wound above an adjacent second warp yarn, and the process is repeated repeatedly). And weft yarns are inserted once from one side of the warp system, after the weft yarns are inserted, the spiral weft insertion device reversely rotates to exit from a shed, and then the reed drives the weft yarns into a weaving opening to complete weaving of one weft yarn.
Drawings
FIG. 1 is a schematic view showing a spiral weft insertion mode of a first weft of the present invention;
FIG. 2 is a schematic cross-sectional view of an interwoven structure of warp yarns and weft yarns of a first weft of the present invention;
FIG. 3 is a schematic view showing a spiral weft insertion mode of the second weft of the present invention;
FIG. 4 is a schematic cross-sectional view of an interwoven structure of warp yarns and weft yarns of a second weft of the present invention;
FIG. 5 is a schematic view of the interweaving of warp and weft yarns for spiral weft insertion in accordance with the present invention;
FIG. 6 is a schematic representation of the 2/1 twill weave construction of the present invention;
FIG. 7 is a schematic view of a basic cyclic unit of the inventive tissue A;
FIG. 8 is an expanded view of two cells of tissue A of the present invention;
FIG. 9 is a schematic structural view of a weave A in which weft yarns are interwoven with warp yarns in the spiral weft insertion of the present invention;
FIG. 10 is a schematic view of a basic cyclic unit of the inventive tissue B;
FIG. 11 is an expanded view of two cells of tissue B of the present invention;
FIG. 12 is a schematic diagram of a structure of a weft yarn interwoven with warp yarns in a spiral weft insertion of the present invention;
FIG. 13 is a schematic view of a basic cyclic unit of the tissue C of the present invention;
FIG. 14 is an expanded view of two cells of tissue C of the present invention;
FIG. 15 is a schematic structural view of a weft yarn-warp yarn interlacing structure C in spiral weft insertion according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Examples
The combined spiral weft insertion device with the variable screw pitch comprises a holder 1 and a weft inserter 2, wherein the holder 1 is fixedly connected with the weft inserter 2, and the holder 1 is positioned at the head end or the tail end of the weft inserter 2 and used for holding weft yarns; the weft insertion device 2 is of a spiral type and is used for drawing weft yarns to move spirally, and for fabrics with different weave structures, a variable-pitch weft insertion device is adopted, namely the pitch is unequal, and parts with large pitch can contain 2 or more warp yarns to form 2/1 or 3/1 and other complex weave structures; the part with small pitch can only contain 1 warp yarn, and the weft yarn passes through the part to form a structure interwoven with 1/1 plain weave.
for the fabric with a simple structure, a spiral weft insertion device can be adopted for weft insertion, so that weft yarns and warp yarns are interwoven; for the fabric with a complex weave structure, in the weaving process of finishing a weave circulation, a group of weft inserters with different screw pitches can be adopted according to different distribution of warp and weft yarn interweaving points in the fabric weave structure.
As shown in fig. 1-2, in the weaving method of the variable pitch combined spiral weft insertion device, the gripper of the non-opening weft insertion weaving device grips the weft, and then the weft insertion device moves left along the direction perpendicular to the warp, so as to drive the weft to rotate around the adjacent warp along the spiral line in the left-hand way along the same rotation track of the weft insertion device, so as to interweave the weft with the warp of the warp system in an up-and-down alternating way, and the number of the warp accommodated each time is changed according to the pitch, specifically: the weft yarns are wound below n warp yarns and then wound above m adjacent warp yarns, and the weft yarns are circularly repeated below k warp yarns, so that one-time weft insertion is completed from one side of a warp yarn system, after the weft insertion, the shedding-free weft insertion weaving device exits from a shed in a reverse rotation mode, namely a right-handed rotation mode, and then the reed drives the weft yarns into a weaving opening to complete first weft weaving;
And after the weft insertion weaving of the first weft is finished, then the spiral weft insertion device introduces a second weft into the shed in the same way in a way of being opposite to the rotating direction of the first weft, namely in a right-handed way, so that the second weft insertion is finished, after the weft insertion is finished, the spiral weft insertion device retreats from the shed in a left-handed way, then the weft is tied up by a reed so as to finish the second weft weaving, and the rest is done so as to finish the fabric weaving.
when the second weft is inserted, the rotation direction of the spiral weft insertion device is opposite to that of the first weft, and the like: during weft insertion of odd weft yarns, the spiral weft insertion device rotates leftwards, and during weft insertion of even weft yarns, the spiral weft insertion device rotates rightwards, so that the weaving rule of the next weft warp yarn and weft yarn tissue points is opposite.
detailed description of the preferred embodiment 1
The following is an example of an 2/1 twill weave:
2/1 the twill basic weave diagram is shown in FIG. 6 and can be broken down into three patterns, diagram A, B and C. Note: "×" represents the interlacing points of the warp yarns over the weft yarns; "□" represents the point at which the weft yarns interlace over the warp yarns.
A Unit organization
fig. 7 is a basic tissue cycle of an a unit, and fig. 8 is an expanded view of two cycles of the a unit.
The forming method is as shown in FIG. 9: the pitch interval of the spiral weft insertion device is 4 warps, the weft insertion device pulls the wefts through the shed in a spiral track, and each weft and warp are interwoven in a circulating unit: the weft yarn rotates around the three warp yarns along a straight line to form three interweaving points, floats on one warp yarn in sequence to form a weft tissue point, then moves forwards in a spiral mode, sinks downwards below the two warp yarns to advance to form two continuous warp tissue points, the interweaving rule of one tissue unit A is finished, and the like. 2/1 weave is formed, the order of interleaving is: from right to left are as follows: weft tissue points → warp tissue points.
B cell organization
Fig. 10 is a basic tissue cycle of a B cell, and fig. 11 is an expanded view of two cycles of the B cell.
The forming method comprises the following steps: as shown in fig. 12: the pitch interval of the spiral weft insertion device is 4 warps, the weft insertion device pulls the wefts through the shed in a spiral track, and each weft and warp are interwoven in a circulating unit: the weft yarn rotates around three warp yarns in a straight line, sinks under two warp yarns to form two continuous warp structure points, then spirally advances forwards to float above the warp yarns to form weft structure points, the interweaving of one tissue unit B is completed, and the like, 2/1 tissues are formed, and the interweaving order is as follows: from right to left are as follows: warp tissue points → weft tissue points.
c cell organization
fig. 13 is a basic tissue cycle of a C-tissue unit, and fig. 14 is an expanded view of two cycles of the C-tissue unit.
the forming method comprises the following steps: as shown in fig. 6: the pitch interval of the spiral weft insertion device is 4 warps, the weft insertion device pulls the wefts through the shed in a spiral track, and each weft and warp are interwoven in a circulating unit: the weft yarn rotates linearly around three warp yarns in the order: the weft yarns sink under the warp yarns to form warp structure points, then spirally ascend to float above the warp yarns to form weft structure points, then spirally descend to sink under the warp yarns to form warp structure points again, the interweaving rule of a weave unit C is completed, and the like, 2/1 weaves are formed, and the interweaving sequence is as follows: from right to left are as follows: warp tissue points → weft tissue points → warp tissue points, the order of interlacing is: from right to left are as follows: warp tissue points → weft tissue points. The resultant structure is shown in FIG. 15.
in short, different fabric weaves can be formed by arranging and combining different spiral weft insertion devices in the weft insertion process.
The invention does not need to form a shed for dividing warp into an upper layer and a lower layer before weft insertion, finishes the interweaving of the warp and the weft through the opening and closing movement of the shed after the weft insertion, directly carries out the weft insertion in a spiral moving weft insertion mode, finishes the interweaving with the warp during the weft insertion, saves a complex weft insertion mechanism, improves the working efficiency, saves the power consumption and has the energy-saving effect.
the weft yarn in the invention does not move along a straight line, but moves along a spiral track, and the weft yarn is clamped by a spiral weft insertion device to rotate along a spiral line from one side of a selvedge in a direction vertical to a warp system, so that the weft yarn is sequentially interwoven with warp yarns of the warp system up and down (for example, the weft yarn is wound below a first warp yarn and then wound above an adjacent second warp yarn, and the process is repeated repeatedly). And weft yarns are inserted once from one side of the warp system, after the weft yarns are inserted, the spiral weft insertion device reversely rotates to exit from a shed, and then the reed drives the weft yarns into a weaving opening to complete weaving of one weft yarn.
Claims (3)
1. The utility model provides a combination formula spiral wefting insertion device of variable pitch which characterized in that: the weft insertion device comprises a clamp holder (1) and a weft insertion device (2), wherein the clamp holder (1) is fixedly connected with the weft insertion device (2), and the clamp holder (1) is positioned at the head end or the tail end of the weft insertion device (2) and is used for clamping weft yarns; the weft insertion device (2) is of a spiral type and is used for pulling weft yarns to move spirally, and for fabrics with different weave structures, a variable-pitch weft insertion device is adopted, namely the pitch is unequal, and a part with a large pitch can contain 2 or more warp yarns to form a weave structure of 2/1 or 3/1; the part with small pitch can only contain 1 warp yarn, and the weft yarn forms a structure interwoven by 1/1 plain weave after passing through;
for the fabric with a simple organization structure, a spiral weft insertion device is adopted for weft insertion, so that weft yarns are interwoven with warp yarns; for the fabric with a complex weave structure, in the weaving process of finishing a weave circulation, a group of weft inserters with different screw pitches can be adopted according to different distribution of warp and weft yarn interweaving points in the fabric weave structure.
2. A weaving method of a variable pitch combined type spiral weft insertion device according to claim 1, characterized in that: the gripper of the weft insertion device clamps weft yarns, then the weft insertion device moves leftwards along the direction vertical to the warp yarns, so that the weft yarns are driven to rotate around the adjacent warp yarns along the spiral line in a left-handed mode along the same rotating track of the weft insertion device, the weft yarns are sequentially interwoven with the warp yarns of a warp yarn system in an up-down alternating mode, and the number of the warp yarns contained at each time is changed according to the size of a thread pitch, and the weft insertion device specifically comprises: the weft yarns are wound below n warp yarns and then wound above m adjacent warp yarns, and the weft yarns are circularly repeated below k warp yarns, one-time weft insertion is completed on one side of a warp yarn system, after the weft insertion, the weft insertion device exits from a shed in a reverse rotation mode, namely a right-hand rotation mode, and then the reed drives the weft yarns into a weaving opening to complete first weft weaving;
And after the weft insertion weaving of the first weft is finished, then the spiral weft insertion device introduces a second weft into the shed in the same way in a way of being opposite to the rotating direction of the first weft, namely in a right-handed way, so that the second weft insertion is finished, after the weft insertion is finished, the spiral weft insertion device retreats from the shed in a left-handed way, then the weft is tied up by a reed so as to finish the second weft weaving, and the rest is done so as to finish the fabric weaving.
3. The weaving method of a variable pitch combined spiral weft insertion device according to claim 2, characterized in that: when the second weft is inserted, the rotation direction of the spiral weft insertion device is opposite to that of the first weft, and the like: during weft insertion of odd weft yarns, the spiral weft insertion device rotates leftwards, and during weft insertion of even weft yarns, the spiral weft insertion device rotates rightwards, so that the weaving rule of the next weft warp yarn and weft yarn tissue points is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346041.4A CN108588974B (en) | 2018-04-18 | 2018-04-18 | Variable-pitch combined spiral weft insertion device and weaving method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346041.4A CN108588974B (en) | 2018-04-18 | 2018-04-18 | Variable-pitch combined spiral weft insertion device and weaving method thereof |
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| Publication Number | Publication Date |
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| CN108588974A CN108588974A (en) | 2018-09-28 |
| CN108588974B true CN108588974B (en) | 2019-12-17 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD243517A1 (en) * | 1985-12-17 | 1987-03-04 | Textima Veb K | WAVELESS WEAVING MACHINE WITH A ROTATING WEB ROLLER |
| CN203890587U (en) * | 2014-03-27 | 2014-10-22 | 武汉纺织大学 | Opening weft guide mechanism applicable to weaving of multi-layer fabric |
| CN204780071U (en) * | 2015-06-01 | 2015-11-18 | 苏州市晨彩纺织研发有限公司 | Spiral aversion formula weft accumulator |
| EP3121317B1 (en) * | 2015-07-23 | 2021-01-06 | STÄUBLI BAYREUTH GmbH | Method for weaving a fabric, near-net shape fabric woven via such a method and weaving loom for implementing this method |
| CN105926142A (en) * | 2016-07-13 | 2016-09-07 | 吴江万工机电设备有限公司 | Circular-arc-shaped beating-up mechanism |
| CN206345969U (en) * | 2016-12-26 | 2017-07-21 | 浙江越剑机械制造有限公司 | A kind of high speed rapier towel loom |
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