CN115262063A - Multilayer high-density warp yarn gathering device and preparation method of multilayer high-density fabric - Google Patents
Multilayer high-density warp yarn gathering device and preparation method of multilayer high-density fabric Download PDFInfo
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- CN115262063A CN115262063A CN202211070260.7A CN202211070260A CN115262063A CN 115262063 A CN115262063 A CN 115262063A CN 202211070260 A CN202211070260 A CN 202211070260A CN 115262063 A CN115262063 A CN 115262063A
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D11/00—Double or multi-ply fabrics not otherwise provided for
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
- D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
Abstract
The invention provides a multilayer high-density warp collecting device and a preparation method of multilayer high-density fabric. The multilayer high-density warp collecting device is arranged between the let-off device and the loom; comprises a carding mechanism and a bunching mechanism which are arranged in sequence along the advancing direction of warp yarns; the carding mechanism comprises a plurality of carding components which are arranged and combined in the width and height directions; the bundling mechanism comprises a plurality of bundling components which are arranged and combined in the height direction; the height and the width of the bundling mechanism are both smaller than those of the carding mechanism, and the width of the bundling mechanism is equal to the weaving width of the fabric to be woven. According to the invention, the carding mechanism can be obtained by freely combining the carding assembly and the bundling mechanism according to the thickness and the width of a fabric to be woven, the bundling mechanism can be obtained by freely combining the bundling assembly, the warp yarns can be well furled in the width direction and the height direction, different warp yarns cannot be rubbed and entangled, meanwhile, the bending angle for furling the warp yarns every time is very small, and the problems of abrasion and breakage of the warp yarns cannot occur.
Description
Technical Field
The invention relates to the technical field of high-performance fiber weaving, in particular to a multilayer high-density warp yarn gathering device and a preparation method of multilayer high-density fabric.
Background
High-performance fiber fabrics are one of the textile composite materials which are receiving attention in recent years, and are widely applied to the fields of aerospace, military, automobiles, construction, medical treatment and the like due to the advantages of high specific strength, high specific modulus, good impact resistance, strong designability and the like. At present, thin or bendable high-performance fiber fabrics are mainly woven by adopting traditional two-dimensional weaving equipment, but thick or inflexible high-performance fiber fabrics are mostly woven by adopting a hand-knitting machine or a three-dimensional weaving machine at home at present.
For multilayer high-density high-performance fiber fabrics, the warp let-off mechanism often occupies a large area due to the large number of warp yarns and the high arrangement density, so that the width of the let-off is larger than that of the loom. If the warp yarns are directly sent to the cloth fell of the loom through the let-off mechanism, namely a weaving mode of 'wide let-off and narrow weaving' is adopted, the warp yarns on two sides are inevitably gathered towards the middle, and the walking paths of the warp yarns on two sides are longer than the warp yarns in the middle, so that the tension of the warp yarns on two sides is tighter or the tension of the warp yarns in the middle is looser in the weaving process, and the obtained fabric is uneven or the warp yarns on two sides are easy to break. Especially for high-performance fibers such as carbon fibers, glass fibers, basalt fibers and the like, due to poor shearing resistance and bending resistance, the adoption of the device can cause the turning angle of the warp yarns on two sides to be overlarge, so that the warp yarns are abraded or broken. Therefore, a warp collecting device is required to be additionally arranged between the warp feeding mechanism and the weaving machine, and before the warp enters the weaving machine, the warp is combed and bunched in advance so that the warp has the same preset width as the fabric, and then weaving is carried out.
Patent with application number CN201210047774.0 discloses a let-off device of a carbon fiber multilayer angle-linked loom, which comprises a let-off creel, a yarn tension adjusting device and a yarn collecting device, wherein the yarn collecting device is positioned right in front of a weaving opening of the loom; the yarn collecting device comprises a yarn collecting machine frame; a yarn collecting roller bracket is fixedly connected to the yarn collecting rack, and the longitudinal section of the yarn collecting roller bracket is in a V shape with an opening opposite to the weaving machine; a plurality of upper layer yarn feeding and collecting rollers which are parallel to each other are arranged on the upper half part of the yarn collecting roller bracket, and all the upper layer yarn feeding and collecting rollers are positioned in the same plane; an upper layer yarn outlet and collecting roller is arranged obliquely below each upper layer yarn inlet and collecting roller along the let-off direction, all the upper layer yarn outlet and collecting rollers are positioned in the same plane, and the plane where all the upper layer yarn outlet and collecting rollers are positioned is parallel to the plane where all the upper layer yarn inlet and collecting rollers are positioned; a plurality of lower layer yarn feeding and collecting rollers which are parallel to each other are arranged on the lower half part of the yarn collecting roller bracket, and all the lower layer yarn feeding and collecting rollers are positioned in the same plane; the lower layer yarn outlet yarn collecting roller is arranged above each lower layer yarn inlet yarn collecting roller in the warp feeding direction, all the lower layer yarn outlet yarn collecting rollers are located in the same plane, and the plane where the lower layer yarn outlet yarn collecting rollers are located is parallel to the plane where the lower layer yarn inlet yarn collecting rollers are located. The device can only carry out certain furling action on the warp yarns from the height; meanwhile, the warp yarns are bent for multiple times through the yarn collecting roller, the yarn collecting roller can abrade the warp yarns, and the warp yarns can be damaged by multiple times of bending.
In view of the above, there is a need for an improved multi-layer high-density warp collecting device and a method for preparing a multi-layer high-density fabric, which solve the above problems.
Disclosure of Invention
The invention aims to provide a multilayer high-density warp collecting device and a preparation method of multilayer high-density fabric, which can obtain a carding mechanism through the free combination of carding components according to the thickness (layer number) and the width of the fabric to be woven, obtain a bundling mechanism through the free combination of bundling components, well realize the collection of warp yarns in the width and height directions, avoid friction and entanglement among different warp yarns, and avoid the problems of abrasion and breakage of the warp yarns due to small bending angle during the collection of the warp yarns each time.
In order to achieve the aim, the invention provides a multilayer high-density warp collecting device which is arranged between a let-off device and a loom; comprises a carding mechanism and a bunching mechanism which are arranged in sequence along the advancing direction of warp yarns; the carding mechanism comprises a plurality of carding components which are arranged and combined in the width and height directions; the bundling mechanism comprises a plurality of bundling components which are arranged and combined in the height direction; the height and the width of the bundling mechanism are both smaller than those of the carding mechanism, and the width of the bundling mechanism is equal to the weaving width of the fabric to be woven; the warp yarns sent out by the let-off device are subjected to carding, positioning and pre-bundling by the carding mechanism, and then subjected to width fixing and bundling by the bundling mechanism, so that the warp yarns are gathered in the width and height directions.
As a further improvement of the invention, each carding assembly and each bundling assembly comprise a plurality of warp channels in the vertical direction and the horizontal direction, the number of the warp channels on the same horizontal plane of the carding mechanism is equal to that of the warp channels on the same horizontal plane of the bundling assembly, and the number of the warp channels on the same vertical plane of the carding mechanism is equal to that of the warp channels on the same vertical plane of the bundling mechanism.
As a further improvement of the invention, each carding assembly comprises two vertically arranged carding plate fixing seats, and a plurality of layering rods and carding plates arranged between the two carding plate fixing seats; the plurality of layering rods are arranged up and down, are perpendicular to the carding plate fixing seat and form a plurality of horizontal through holes; the plurality of layering rods and the carding plates are arranged between the two carding plate fixing seats in front and at back; the carding plate is provided with a plurality of vertical through holes in the vertical direction; the transverse through holes and the vertical through holes are overlapped to form a plurality of warp channels, and the warp channels divide the warps into a plurality of rows and a plurality of columns so as to realize carding of the warps.
As a further improvement of the invention, the carding plate comprises two fixed plates which are arranged up and down and a grid which is arranged between the two fixed plates; the grid is provided with a plurality of vertical through holes in the vertical direction.
As a further improvement of the invention, two ends of a plurality of layering rods are connected with two carding plate fixing seats through bearings; the carding plate fixing seat is provided with a slotted hole for fixing the carding plate.
As a further improvement of the invention, the bundling assembly and the carding assembly have the same structure and different sizes; the height of the bundling assembly is equal to that of the carding assembly, and the width of the bundling assembly is larger than that of the carding assembly; the density of the grids of the carding assembly is 3-20 pieces/cm, and the grid density of the bundling assembly is the same as that of the grids of the carding assembly.
As a further improvement of the invention, the multilayer high-density warp yarn collecting device further comprises a set of yarn pressing rollers arranged between the bundling mechanism and the loom, the set of yarn pressing rollers are arranged up and down, and the warp yarns sent out by the bundling mechanism pass through gaps of the set of yarn pressing rollers to realize the collection of the warp yarns again.
As a further improvement of the invention, the distance between the carding mechanism and the bundling mechanism is 0.5-1.5m, and the distance between the bundling mechanism and the yarn pressing roller is 0.5-3m.
As a further improvement of the invention, the material of the layering rod is one of stainless steel, chrome-plated rod and polytetrafluoroethylene; the grating is made of stainless steel; the grating consists of a plurality of cylindrical stainless steel bars; the surface material of the yarn pressing roller is one of stainless steel, chrome-plated rods and polytetrafluoroethylene.
In order to achieve the purpose, the invention also provides a preparation method of the multilayer high-density fabric, the multilayer high-density warp yarn collecting device is adopted to collect the warp yarns, and the preparation method comprises the following steps:
s1, arranging and combining a plurality of carding assemblies in the width and height directions according to the preset weaving thickness and width of a fabric to be woven to obtain the carding mechanism;
s2, combining and arranging a plurality of bundling assemblies in the height direction according to the height and the width of the carding mechanism and the preset weaving thickness and width of the fabric to be woven to obtain the bundling mechanism;
and S3, the warp feeding device conveys the warp to the carding mechanism, the warp is subjected to carding, positioning and pre-gathering by the carding mechanism, then passes through the gathering mechanism, is subjected to primary gathering in the height and width directions, and enters the loom for weaving after the breadth and the gathering by the gathering mechanism.
The invention has the beneficial effects that:
(1) The multilayer high-density warp collecting device provided by the invention can well collect warps in the width and height directions by arranging the carding mechanism and the bundling mechanism. Firstly, arranging and combining a plurality of carding assemblies in the width and height directions according to the preset weaving thickness (layer number) and width of a fabric to be woven to obtain a carding mechanism; and then, combining and arranging a plurality of bundling assemblies in the height direction according to the height and the width of the carding mechanism and the preset weaving thickness (layer number) and width of the fabric to be woven to obtain the bundling mechanism. The warp feeding device conveys warp yarns to the carding mechanism, the carding mechanism carries out carding, positioning and pre-bundling on the warp yarns, and then conveys the warp yarns to the bundling mechanism, in the process, the warp yarns are folded for the first time in the height direction and the width direction, and the warp yarns cannot be intertwined and rubbed; after the bundling mechanism fixes the width of the warp yarns, the warp yarns are folded for the second time by the yarn pressing roller in the height direction, and finally the warp yarns are folded in the height direction and the width direction. In the whole process, the bending angle of the warp yarns in each time is small, namely the bundling angle is small, so that the problems of abrasion and breakage of the warp yarns can be solved; meanwhile, in the whole process, the warps are divided into a plurality of groups in the height and width directions, so that the condition that the outer side warps break due to overlarge tension is avoided; in addition, the problems of friction, entanglement and the like between warps are reduced.
(2) The multilayer high-density warp yarn gathering device provided by the invention can obtain the carding mechanism through the free combination of the carding assembly and the bundling mechanism through the free combination of the bundling assembly according to the thickness (layer number) and the width of a fabric to be woven, has high flexibility and wide application range, and is suitable for creels and differential warp beam let-off modes (different let-off units of the let-off modes are not interfered with each other and are separately controlled); the problem of difficult weaving caused by the fact that the let-off width is far higher than the weaving width in the process of weaving the multilayer high-density fabric can be effectively solved; the method solves the problems of warp abrasion and breakage caused by overlarge bundling angle in the weaving process of the multilayer high-density fabric. In addition, gaps are arranged between the carding mechanism and each part of the bundling mechanism, so that the broken yarns can be searched and replaced by operators at any time.
Drawings
FIG. 1 is a perspective view of the multi-layer high density warp collecting device of the present invention.
Fig. 2 is a perspective view of the combing assembly in fig. 1.
Fig. 3 is a schematic perspective view of the carding plate of fig. 2.
Fig. 4 is a schematic perspective view of the bundling assembly in fig. 1.
Reference numerals
1-a carding mechanism; 2-a bundling mechanism; 3, a yarn pressing roller; 4-warp yarns; 11-a carding assembly; 21-a bundling assembly; 111-carding plate fixing seat; 112-a layering rod; 113-a carding plate; 114-a fixed plate; 115-a grid; 116-a bearing; 117-slotted hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1 to 4, the present invention provides a multi-layer high-density warp collecting device, which is arranged between a let-off device and a loom and comprises a carding mechanism 1 and a bundling mechanism 2 sequentially arranged along the advancing direction of warp 4. The carding mechanism 1 comprises a plurality of carding components 11 which are arranged and combined in the width and height directions; the bundling mechanism 2 includes a plurality of bundling assemblies 21 arranged and combined in the height direction. The height and the width of the bundling mechanism 2 are both smaller than those of the carding mechanism 1 (the height and the width of the carding mechanism 1 refer to the height and the width of the combination of the carding assemblies 11 and comprise gaps among the carding assemblies 11; the height of the bundling mechanism 2 refer to the height of the combination of the bundling assemblies 21 and comprise gaps among the bundling assemblies 21; the width of the bundling mechanism 2 is the width of the bundling assemblies 21), and the width of the bundling mechanism 2 is equal to the weaving width of the fabric to be woven. According to the arrangement, firstly, the number and the position relation of creels or differential warp beams used by a let-off device (the let-off device comprises a plurality of groups of creels or differential warp beams) are selected according to the preset weaving thickness and width of the fabric to be woven (namely the number of layers of the warp yarns 4 and the number of the warp yarns 4 in each layer); secondly, arranging and combining a plurality of carding assemblies 11 in the width and height directions according to the preset weaving thickness and width of the fabric to be woven or the specific specification of a let-off device to obtain a carding mechanism 1; then, a plurality of bundling assemblies 21 are combined and arranged in the height direction according to the height and the width of the carding mechanism 1 and the preset weaving thickness and width of the fabric to be woven to obtain the bundling mechanism 2. The let-off device conveys the warp 4 to the carding mechanism 1, and the height (layer number) and width of the warp 4 are not changed in the process, namely the warp 4 is not bent; after the carding mechanism 1 combs, positions and pre-collects the warp yarns 4, the warp yarns 4 are conveyed to the collecting mechanism 2, the warp yarns 4 are folded for the first time in the height and width directions in the process, and the different warp yarns 4 cannot be intertwined or rubbed, so that the warp yarns 4 reach the preset weaving width of a fabric to be woven in the width direction, and the warp yarns 4 are folded; the bundling mechanism 2 performs width fixing and bundling on the warp 4, and then sends the warp to the loom for weaving. In the whole process, the warp yarns 4 are bent to a small degree, namely the bundling angle is small, and the problems of abrasion and breakage of the warp yarns 4 cannot occur; meanwhile, the warp yarns 4 are divided into a plurality of groups in the height and width directions in the whole process, so that the condition that the outer warp yarns 4 are broken due to overlarge tension is avoided.
Each carding assembly 11 and each bundling assembly 21 respectively comprise a plurality of warp channels in the vertical direction and the horizontal direction, the number of the warp channels on the same horizontal plane of the carding mechanism 1 is equal to that of the warp channels on the same horizontal plane of the bundling assembly 21, and the number of the warp channels on the same vertical plane of the carding mechanism 1 is equal to that of the warp channels on the same vertical plane of the bundling mechanism 2. With this arrangement, after the warp 4 enters the bundling mechanism 2 from the carding mechanism 1, the warp 4 is merely bundled, and no merging (merging refers to the same warp channel entering two or more warp 4) occurs.
As shown in fig. 2, the carding assembly 11 includes two vertically arranged carding plate holders 111, and a plurality of layering rods 112 and carding plates 113 arranged between the two carding plate holders 111. The layering rods 112 are vertically arranged in the same vertical plane, the layering rods 112 are perpendicular to the carding plate fixing seat 111 (namely, the layering rods 112 are horizontally arranged), and the layering rods 112 form a plurality of horizontal transverse through holes (the number of the layering rods 112 can be freely set according to the number of layers of the fabric to be woven). A plurality of layering rods 112 and carding plates 113 are arranged between the two carding plate fixing seats 111 in front and back; the carding plate 113 is provided with a plurality of vertical through holes in the vertical direction; the transverse through holes and the vertical through holes are overlapped to form a plurality of rows and a plurality of columns of orderly arranged warp channels. Each warp channel is used for one warp 4 to pass through, and the warp 4 is separated and neatly arranged by a plurality of rows and columns of neatly arranged warp channels so as to realize carding of the warp 4 and avoid accumulation, winding or friction damage of a plurality of warps 4. Two ends of a plurality of layering rods 112 are connected with two carding plate fixing seats 111 through bearings 116; the carding plate fixing seat 111 is provided with a slot hole 117 for fixing the carding plate 113. The material of the layering rod 112 is one of stainless steel, chrome-plated rod and polytetrafluoroethylene.
Specifically, as shown in fig. 3, the carding plate 113 includes two fixed plates 114 disposed up and down and a grating 115 disposed between the two fixed plates 114; a plurality of vertical through holes in the vertical direction are formed in the grid 115. In some embodiments, the material of the grid 115 is stainless steel, and the grid 115 is composed of a plurality of cylindrical stainless steel bars, and the surface of the cylindrical stainless steel bars is smooth, so that the warp yarns 4 are prevented from being damaged. The density of the grid 115 of the opening assembly 11 is 3-20 counts/cm.
As shown in fig. 4, the bundling unit 21 and the opening unit 11 have the same structure and different sizes. The height of the bundling component 21 is equal to the height of the carding component 11, and the width is larger than the width of the carding component 11. The width of the bundle assembly 21 is set according to a preset manufacturing width of the fabric to be woven. The material of 21 parts of the bundling assembly is the same as that of the carding assembly 11, and the density of the grids is the same as that of the carding assembly 11. The bundling assemblies 21 which are arranged and combined in the height direction form a bundling mechanism 2, the height of the bundling mechanism 2, the distance between different bundling assemblies 21 and the specific position relation between the bundling mechanism 2 and the carding mechanism 1 are set according to actual conditions, warp yarns 4 led out from the carding mechanism 1 can sequentially and correspondingly enter the bundling mechanism 2 according to preset layers, the yarns 4 are bent slightly every time as far as possible, and the breakage of the yarns 4 is avoided.
As shown in fig. 1, the multi-layer high-density warp yarn collecting device further comprises a set of yarn pressing rollers 3 arranged up and down between the bundling mechanism 2 and the weaving machine, and the yarn pressing rollers 3 respectively rotate through internal rotatable rotating shafts (the diameters of the two rotating shafts are consistent). The warp yarns 4 sent out by the bundling mechanism 2 pass between the two yarn pressing rollers 3, and the two yarn pressing rollers 3 gather the warp yarns 4 sent out by the bundling mechanism 2 for the second time in the height direction. In the whole process, the warp yarns 4 are folded twice in the height direction, and compared with one-time folding, the bundling angle of the two-time folding is smaller, so that the warp yarns 4 are prevented from being broken due to larger bending. The surface material of the yarn pressing roller 3 is one of stainless steel, chrome-plated rod and polytetrafluoroethylene. The length of the yarn pressing roller 3 is larger than the width of the fabric to be woven, and the distance between the adjacent yarn pressing rollers 3 is larger than the thickness of the fabric to be woven.
The distance between the carding mechanism 1 and the bundling mechanism 2 is 0.5-1.5m, the distance between the bundling mechanism 2 and the yarn pressing roller 3 is 0.5-3m, and the symmetry plane of the bundling mechanism 2 is superposed with the symmetry plane of the carding mechanism 1.
The invention also provides a preparation method of the multilayer high-density fabric, the preparation process adopts the multilayer high-density warp yarn furling device to furl the warp yarns 4, and the preparation method comprises the following steps:
s1, arranging and combining a plurality of carding assemblies 11 in the width and height directions according to the preset weaving thickness (layer number) and width of a fabric to be woven to obtain a carding mechanism 1;
s2, combining and arranging a plurality of bundling assemblies 21 in the height direction according to the height and the width of the carding mechanism 1 and the preset weaving thickness and width of the fabric to be woven to obtain a bundling mechanism 2;
s3, setting the length of the yarn pressing roller 3 and the distance between the adjacent yarn pressing rollers 3 according to the preset weaving thickness and width of the fabric to be woven;
s4, conveying the warps 4 to the carding mechanism 1 by the warp conveying device, wherein each warp 4 passes through different warp channels arranged on the carding component 11; after the warp 4 passes through the carding mechanism 1 for carding, positioning and pre-collecting, and then passes through the collecting mechanism 2, the warp 4 is collected for the first time in the height direction and the width direction in the process from the carding mechanism 1 to the collecting mechanism 2 (at this time, the warp 4 reaches the preset weaving width of the fabric to be woven in the width direction); the warp yarns 4 enter a group of yarn pressing rollers 3 after being subjected to width fixing and beam collection by the bundling mechanism 2, and are furled for the second time in the height direction; and finally, entering a loom for weaving.
If the thickness and the width of the fabric to be folded are too large, the fabric can be folded for many times in height and width, and the excessive bundling angle in each folding process is prevented.
The invention is described in detail below by means of a number of examples:
example 1
A preparation method of a multilayer high-density fabric with 20 layers of thickness, 1m of width and 10 pieces/cm of face warp density adopts a multilayer high-density warp yarn furling device to furl warp yarns 4, and comprises the following steps:
s1, assembling a carding mechanism 1:
according to the preset weaving thickness (layer number) and width of the fabric to be woven, a plurality of carding assemblies 11 are arranged and combined in the width and height directions to obtain a carding mechanism 1, which specifically comprises the following steps:
the carding assembly 11 comprises two vertically arranged carding plate fixing seats 111, and 6 layering rods 112 and carding plates 113 which are arranged between the two carding plate fixing seats 111.
Wherein, be equipped with 6 dead eyes that are used for bearing 116 on the carding plate fixing base 111, the distance between the adjacent dead eye is 15mm. The 6 layering rods 112 can divide each carding assembly 11 into 5 layers, that is, each carding assembly 11 has 5 layers. The total length of the layering rod 112 is 180mm, wherein the length of the layering rod 112 between the two carding plate fixing seats 111 is 110mm, and the diameter of the layering rod is 8mm; the layering rod 112 has a 35mm long 6mm diameter section at each end for connection to the bearing 116.
The carding plate fixing seat 111 is provided with a slotted hole 117 with the length of 100mm and the width of 10mm for fixing the carding plate 113. The total length of the carding plate 113 is 170mm, the density of the grids 115 in the carding plate 113 is 10/cm (the density of the grids 115 is freely chosen according to the face density of the fabric to be woven), and each layer of each carding assembly 11 has at least 100 warp channels for the warp yarns 4 to pass through.
The combing assemblies 11 are arranged in 2 transverse directions and 2 longitudinal directions (2 transverse directions are the same row, and 2 longitudinal directions are the same column), so as to obtain a first assembly unit (10 layers in total, each layer contains 200 warp yarns 4) with a 2 × 2 structure. In the first assembly unit, the gap between the 2 transverse carding assemblies 11 is 200mm, and the gap between the 2 longitudinal carding assemblies 11 is 200mm.
The obtained first assembly units are arranged in a manner of 5 in the transverse direction and 2 in the longitudinal direction to obtain a second assembly unit with a 5 × 2 structure (20 layers in total, each layer contains 1000 warp yarns 4, that is, the number of layers and the width of the fabric to be woven). In the second assembly unit, the gap between two transversely adjacent first assembly units is 500mm, and the gap between two longitudinally adjacent first assembly units is 400mm.
The arrangement of the gap between the first assembly unit and the second assembly unit aims to facilitate an operator to enter a let-off area at any time in the weaving process so as to search, replace or connect broken yarns.
S2, assembling a bundling mechanism 2:
according to the height and the breadth of the carding mechanism 1 and the preset weaving thickness and the width of the fabric to be woven, a plurality of bundling assemblies 21 are combined and arranged in the height direction to obtain a bundling mechanism 2, which specifically comprises the following steps:
the bundling assembly 21 and the carding assembly 11 have the same structure and different sizes. The height of the bundling component 21 is equal to the height of the carding component 11, and the width is larger than the width of the carding component 11.
The number of layered rods of the bundle assembly 21 is still 6, i.e. there are 5 layers per bundle assembly 21. The length of the layering rod is 1180mm, wherein the length of the layering rod between the two carding plate fixing seats is 1110mm, and the diameter of the layering rod is 8mm.
The total length of the combing plate of the bundling assembly 21 is 1170mm, the grid density in the combing plate is 10 pieces/cm, and each layer at least contains 1000 warps 4.
The bundling assemblies 21 are arranged in a longitudinal direction by 2 to obtain a third assembly unit (10 layers each containing 1000 warp yarns 4). In the third assembly unit, the gap between the longitudinal 2 bundling assemblies 21 is 140mm.
The obtained third assembly units are further arranged in a longitudinal direction by 2 to obtain a fourth assembly unit (20 layers in total, each layer contains 1000 warp yarns 4, namely the layer number and the width of the fabric to be woven). In the fourth assembly unit, the gap between two longitudinally adjacent third assembly units is 400mm.
The arrangement of the gaps between the third assembly unit and the fourth assembly unit aims to facilitate an operator to enter a let-off area at any time in the weaving process so as to search, replace or connect broken yarns.
S3, assembling a yarn pressing roller 3:
the yarn pressing roller 3 (the length is slightly longer than the width of the fabric to be woven) with the length of 1180mm is selected, the rotating shaft with the diameter of 80mm is selected, and the distance between the axes of the upper yarn pressing roller 3 and the lower yarn pressing roller 3 is 110mm.
S4, weaving:
the let-off device conveys the warp yarns 4 to the carding mechanism 1, and each warp yarn 4 passes through different warp yarn channels arranged on the carding component 11; after the warp 4 passes through the carding mechanism 1 for carding, positioning and pre-collecting, the warp passes through the collecting mechanism 2 for collecting in the height direction and the width direction for the first time, and after the warp is subjected to width fixing and collecting by the collecting mechanism 2, the warp enters a group of yarn pressing rollers 3 for collecting in the height direction for the second time; and finally, entering a loom for weaving.
Example 2
A preparation method of a multilayer high-density fabric with 50 layer thickness, 1m width and 10 warp density faces is provided, the warp 4 is gathered by the multilayer high-density warp gathering device, and the preparation method comprises the following steps:
s1, assembling a carding mechanism 1:
the size of the opening comb assembly 11 used was the same as in example 1.
The carding assemblies 11 are arranged in a manner of 2 in the transverse direction and 2 in the longitudinal direction (2 in the transverse direction are the same row, and 2 in the longitudinal direction are the same column), so as to obtain a first assembly unit (10 layers in total, each layer containing 200 warp yarns 4) with a 2 × 2 structure. In the first assembly unit, the gap between the 2 transverse carding assemblies 11 is 200mm, and the gap between the 2 transverse carding assemblies 11 is 200mm.
The obtained first assembly units are arranged in a manner of 5 in the transverse direction and 5 in the longitudinal direction to obtain a second assembly unit with a 5 × 5 structure (50 layers in total, each layer contains 1000 warp yarns 4, namely the number and width of the layers to be woven). In the second assembly unit, the gap between two transversely adjacent first assembly units is 500mm, and the gap between two longitudinally adjacent first assembly units is 200mm.
S2, assembling a bundling mechanism 2:
the size of the bundle assembly 21 used was the same as in embodiment 1.
The bundling assemblies 21 are arranged in a longitudinal direction by 2, resulting in a third assembled unit (10 layers each containing 1000 warp yarns 4). In the third assembly unit, the gap between 2 longitudinal bundling assemblies 21 is 140mm.
And arranging the obtained third assembly units in a longitudinal 5-way manner to obtain fourth assembly units (50 layers in total, each layer contains 1000 warp yarns 4, namely the layer number and the width of the fabric to be woven). In the fourth assembly unit, the gap between two longitudinally adjacent third assembly units is 200mm.
S3, assembling a yarn pressing roller 3:
the spinning rollers 3 (length slightly longer than the width of the fabric to be woven) with the length 1180mm and the rotating shaft with the diameter of 80mm are selected, and the distance between the axes of the upper and lower spinning rollers 3 is 110mm.
S4, weaving:
the let-off device conveys the warp yarns 4 to the carding mechanism 1, and each warp yarn 4 passes through different warp yarn channels arranged on the carding component 11; after the warp 4 passes through the carding mechanism 1 for carding, positioning and pre-collecting, the warp passes through the collecting mechanism 2 for collecting in the height direction and the width direction for the first time, and after the warp is subjected to width fixing and collecting by the collecting mechanism 2, the warp enters a group of yarn pressing rollers 3 for collecting in the height direction for the second time; and finally, entering a loom for weaving.
Example 3
Compared with the embodiment 1, the preparation method of the multilayer high-density fabric with 20 layers of thickness, 1m of width and 8 pieces/cm of face warp density adopts the multilayer high-density warp gathering device to gather the warp 4, and has the difference that the size of the carding assembly 11 is different from that of the embodiment 1, and the density of the grids 115 in the carding plate 113 is 8 pieces/cm; the size of the bundle assembly 21 used was different from that of example 1, and the density of the grids in the carding plate was also 8 pieces/cm. The arrangement and combination of the combing assembly 11 and the bundling assembly 21 are the same as those of embodiment 1, and are not repeated herein.
Example 4
The invention relates to a preparation method of a multilayer high-density fabric with 80 layer thickness, 1.6m width and 8 pieces/cm face warp density, which adopts a multilayer high-density warp gathering device to gather warp yarns 4 and comprises the following steps:
s1, assembling a carding mechanism 1:
the size of the carding assembly 11 used differs from that of example 1 in that the density of the grids 115 in the carding plate 113 is 8/cm.
The combing assemblies 11 are arranged in 2 transverse directions and 2 longitudinal directions (2 transverse directions are the same row, and 2 longitudinal directions are the same column), so as to obtain a first assembly unit (10 layers in total, each layer contains 160 warps 4) with a 2 × 2 structure. In the first assembly unit, the gap between the 2 transverse carding assemblies 11 is 200mm, and the gap between the 2 transverse carding assemblies 11 is 200mm.
And arranging the obtained first assembly units in a manner of 8 in the transverse direction and 8 in the longitudinal direction to obtain a second assembly unit with an 8 x 8 structure (the total number of the first assembly units is 80 layers, and each layer contains 1280 warp yarns 4, namely the number and the width of layers to be woven). In the second assembly unit, the gap between two transversely adjacent first assembly units is 500mm, and the gap between two longitudinally adjacent first assembly units is 200mm.
S2, assembling a bundling mechanism 2:
the size of the bundling assembly 21 is different from that of the embodiment 1, the length of the layering rod of the bundling assembly 21 is 1680mm, wherein the length of the layering rod between two carding plate fixing seats is 1610mm, and the diameter is 8mm. The total length of the carding plate is 1670mm, and the density of the grids in the carding plate is 8/cm.
The bundling assemblies 21 are arranged in a longitudinal direction by 2 to obtain a third assembly unit (10 layers each containing 1280 warp yarns 4). In the third assembly unit, the gap between the 2 longitudinal bundling assemblies 21 is 140mm.
And arranging the obtained third assembly units in a longitudinal 8-piece mode to obtain a fourth assembly unit (80 layers in total, wherein each layer contains 1280 warp yarns 4, namely the layer number and the width of the fabric to be woven). In the fourth assembly unit, the gap between two longitudinally adjacent third assembly units is 200mm.
S3, assembling a yarn pressing roller 3:
the spinning rollers 3 (length slightly longer than the width of the fabric to be woven) with a length of 1680mm are selected, the rotating shaft with a diameter of 80mm is selected, and the distance between the axes of the upper and lower spinning rollers 3 is 110mm.
S4, weaving:
the let-off device conveys the warp yarns 4 to the carding mechanism 1, and each warp yarn 4 passes through different warp yarn channels arranged on the carding component 11; after the warp 4 passes through the carding mechanism 1 for carding, positioning and pre-collecting, the warp passes through the collecting mechanism 2 for collecting in the height direction and the width direction for the first time, and after the warp is subjected to width fixing and collecting by the collecting mechanism 2, the warp enters a group of yarn pressing rollers 3 for collecting in the height direction for the second time; and finally, entering a loom for weaving.
In conclusion, the invention provides a multilayer high-density warp yarn folding device and a preparation method of multilayer high-density fabric, the carding mechanism can be obtained through the free combination of the carding components according to the thickness (layer number) and the width of the fabric to be woven, the bundling mechanism can be obtained through the free combination of the bundling components, the folding of warp yarns in the width direction and the height direction can be well realized, different warp yarns cannot be rubbed and entangled, meanwhile, the bending angle of the warp yarns folded each time is very small, and the problems of abrasion and breakage of the warp yarns cannot occur; the device has high flexibility and wide application range, and is suitable for creels and differential warp beam let-off modes (different let-off units of the let-off modes are not interfered with each other and are controlled separately); the problem of difficult weaving caused by the fact that the let-off width is far higher than the weaving width in the process of weaving the multilayer high-density fabric can be effectively solved; the method solves the problems of warp abrasion and breakage caused by overlarge bundling angle in the weaving process of the multilayer high-density fabric.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. A multilayer high-density warp collecting device is arranged between a let-off device and a loom; the method is characterized in that: comprises a carding mechanism and a bunching mechanism which are arranged in sequence along the advancing direction of warp yarns; the carding mechanism comprises a plurality of carding components which are arranged and combined in the width and height directions; the bundling mechanism comprises a plurality of bundling components which are arranged and combined in the height direction; the height and the width of the bundling mechanism are both smaller than those of the carding mechanism, and the width of the bundling mechanism is equal to the weaving width of the fabric to be woven; warp yarns sent out by the let-off device are combed, positioned and pre-bundled by the carding mechanism, and then are subjected to width fixing and bundling by the bundling mechanism, so that the warp yarns are gathered in the width direction and the height direction.
2. The multi-layer high density warp gathering device as recited in claim 1, wherein: each carding assembly and each bundling assembly respectively comprise a plurality of warp channels in the vertical direction and the horizontal direction, the number of the warp channels on the same horizontal plane of the carding mechanism is equal to that of the warp channels on the same horizontal plane of the bundling assembly, and the number of the warp channels on the same vertical plane of the carding mechanism is equal to that of the warp channels on the same vertical plane of the bundling mechanism.
3. The multi-layer high density warp gathering device as recited in claim 2, wherein: each carding assembly comprises two vertically arranged carding plate fixing seats, and a plurality of layering rods and carding plates arranged between the two carding plate fixing seats; the plurality of layering rods are vertically arranged and are vertical to the carding plate fixing seat, and a plurality of horizontal through holes are formed by the plurality of layering rods; the plurality of layering rods and the carding plates are arranged between the two carding plate fixing seats in front and at back; the carding plate is provided with a plurality of vertical through holes in the vertical direction; the transverse through holes and the vertical through holes are overlapped to form a plurality of warp channels, and the warp channels divide the warps into a plurality of rows and a plurality of columns so as to realize carding of the warps.
4. A multi-layer high density warp gathering device as set forth in claim 3, wherein: the carding plate comprises two fixed plates arranged up and down and a grid arranged between the two fixed plates; the grid is provided with a plurality of vertical through holes in the vertical direction.
5. The multi-layer high density warp gathering device as recited in claim 2, wherein: two ends of the plurality of layering rods are connected with the two carding plate fixing seats through bearings; the carding plate fixing seat is provided with a slotted hole for fixing the carding plate.
6. The multi-layer high density warp gathering device as recited in claim 4, wherein: the bundling assembly and the carding assembly have the same structure and different sizes; the height of the bundling assembly is equal to that of the carding assembly, and the width of the bundling assembly is larger than that of the carding assembly; the density of the grids of the carding assembly is 3-20/cm, and the grid density of the bundling assembly is the same as that of the grids of the carding assembly.
7. The multi-layer high density warp gathering device as recited in claim 4, wherein: the multilayer high-density warp yarn furling device further comprises a group of yarn pressing rollers arranged between the bundling mechanism and the weaving machine, the group of yarn pressing rollers are arranged up and down, and the warp yarns sent out by the bundling mechanism penetrate through gaps of the group of yarn pressing rollers to furl the warp yarns again.
8. The multi-layer high density warp gathering device as recited in claim 7, wherein: the distance between the carding mechanism and the bundling mechanism is 0.5-1.5m, and the distance between the bundling mechanism and the yarn pressing roller is 0.5-3m.
9. The multi-layer high density warp gathering device as recited in claim 7, wherein: the material of the layering rod is one of stainless steel, a chromium plating rod and polytetrafluoroethylene; the material of the grating is stainless steel; the grating consists of a plurality of cylindrical stainless steel bars; the surface material of the yarn pressing roller is one of stainless steel, chrome-plated rods and polytetrafluoroethylene.
10. A method for preparing a multilayer high-density fabric, wherein the warp yarns are collected by using the multilayer high-density warp collecting device as claimed in any one of claims 1 to 9, the method comprising the steps of: the method comprises the following steps:
s1, arranging and combining a plurality of carding assemblies in the width and height directions according to the preset weaving thickness and width of a fabric to be woven to obtain the carding mechanism;
s2, combining and arranging a plurality of bundling assemblies in the height direction according to the height and the width of the carding mechanism and the preset weaving thickness and width of the fabric to be woven to obtain the bundling mechanism;
and S3, the warp feeding device conveys the warp to the carding mechanism, the warp is subjected to carding, positioning and pre-bundling by the carding mechanism, then passes through the bundling mechanism, is subjected to primary furling in the height and width directions, and enters the loom for weaving after width fixing and bundling by the bundling mechanism.
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| US20030056846A1 (en) * | 1997-05-11 | 2003-03-27 | Alexander Buesgen | Fabric with a variable width |
| JPH10331056A (en) * | 1998-06-29 | 1998-12-15 | Toray Ind Inc | Woven fabric of flat yarn, its production and production apparatus therefor |
| US20160376734A1 (en) * | 2015-06-29 | 2016-12-29 | Snecma | Yarn take-up system for weaving and a method of weaving a reinforcing fiber structure for composite material parts |
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