CN111020875A - Production process of fiber fabric reinforced geotextile - Google Patents
Production process of fiber fabric reinforced geotextile Download PDFInfo
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- CN111020875A CN111020875A CN201911364513.XA CN201911364513A CN111020875A CN 111020875 A CN111020875 A CN 111020875A CN 201911364513 A CN201911364513 A CN 201911364513A CN 111020875 A CN111020875 A CN 111020875A
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- 239000000835 fiber Substances 0.000 title claims abstract description 331
- 239000004744 fabric Substances 0.000 title claims abstract description 77
- 239000004746 geotextile Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000009966 trimming Methods 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 130
- 238000003825 pressing Methods 0.000 claims description 33
- 239000011229 interlayer Substances 0.000 claims description 23
- 230000003068 static effect Effects 0.000 claims description 23
- 230000008030 elimination Effects 0.000 claims description 20
- 238000003379 elimination reaction Methods 0.000 claims description 20
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 238000009960 carding Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000004080 punching Methods 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 3
- 229920002748 Basalt fiber Polymers 0.000 description 2
- 229920004933 Terylene® Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
- D04H3/105—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by needling
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to a production process of fiber fabric reinforced geotextile, which comprises the following steps: (1) preparing a lower layer fiber net; (2) preparing middle layer fiber fabric; (3) preparing an upper layer fiber web; (4) superposing the lower layer fiber web in the step (1), the middle layer fiber fabric in the step (2) and the upper layer fiber web in the step (3), and compacting and molding; (5) carrying out needling; (6) and (5) entering a trimming coiler for coiling. The invention has the advantages that: the tensile property of the geotextile is greatly improved, the performance of various properties of the geotextile can be effectively guaranteed under the condition of independent use, the engineering cost is saved, the construction strength is low, the construction period is shortened, the comprehensive effect is obvious, and the market popularization prospect is considerable.
Description
Technical Field
The invention relates to a production process of fiber fabric reinforced geotextile.
Background
The conventional short fiber needle-punched non-woven geotextile (needle-punched geotextile for short) is a geotextile with certain compactness, which is prepared by carding and lapping short fibers (the fiber length is generally about 50 mm) of terylene or polypropylene fibers and the like to form a plurality of layers of relatively uniform disordered fiber layers and then carrying out needle punching processing. However, due to the limitation of the manufacturing process of the geotextile, the geotextile has low tensile strength in all directions and poor deformation resistance (the tensile strength in all directions of the geotextile is formed by the random winding of short fibers and the friction force between the fibers), and when the geotextile is combined with other reinforced geotextile materials such as grids and the like, various performances of the geotextile can be better exerted.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a production process of a fiber fabric reinforced geotextile, and the technical scheme of the invention is as follows:
the production process of the fiber fabric reinforced geotextile comprises the following steps:
(1) preparing a lower layer fiber net;
(2) preparing middle layer fiber fabric;
(3) preparing an upper layer fiber web;
(4) superposing the lower layer fiber web in the step (1), the middle layer fiber fabric in the step (2) and the upper layer fiber web in the step (3), and compacting and molding;
(5) carrying out needling;
(6) and (5) entering a trimming coiler for coiling.
The step (1) is specifically as follows:
(1-1) laying short fibers on a lapping curtain through carding lapping in a first lapping machine to form a lower-layer fiber net;
(1-2) conducting static elimination on the lower layer fiber web in the step (1-1) through a first static elimination device;
the step (2) is specifically as follows:
(2-1) the middle layer fiber fabric is a sandwich layer fiber fabric, the sandwich layer fiber fabric is subjected to static elimination through a second static elimination device, the tension is kept according to a preset tension value through an electronic tension generator, and the tension is induced through a tension induction device; conveying the interlayer fiber fabric subjected to static elimination to a lower layer fiber net through an automatic fabric conveying device, and feeding the interlayer fiber fabric and the lower layer fiber net into a second lapping machine;
the step (3) is specifically as follows:
(3-1) carding and lapping the short fibers in a second lapping machine to form an upper layer fiber net, and lapping the upper layer fiber net on the interlayer fiber fabric, wherein the upper layer fiber net, the interlayer fiber fabric and the lower layer fiber net are overlapped together;
the step (4) is specifically as follows:
feeding the upper layer fiber web, the interlayer fiber fabric and the lower layer fiber web obtained in the step (3) into a pre-pressing device for pressing and forming;
the step (5) is specifically as follows:
the compressed upper layer fiber web, the interlayer fiber fabric and the lower layer fiber web are subjected to three-stage needling by a first needling machine, a second needling machine and a third needling machine in sequence;
the step (6) is specifically as follows:
and (4) feeding the needled upper layer fiber net, the needled interlayer fiber fabric and the needled lower layer fiber net into a trimming and coiling machine for coiling.
Fabric conveyor (5) including stopper (16), brake chuck (17), reel (18), backup pad (19), friction clutch (20), carry speed reducer (21) and variable frequency speed governing conveying motor (22), reel (18) both ends are connected with brake chuck (17), all install a backup pad (19) in the outside of each brake chuck (17), install brake (16) of being connected with one of them brake chuck (17) on one of them backup pad (19), install friction clutch (20) of being connected with another brake chuck (17) on another backup pad (19), friction clutch (20) connect the output of carrying speed reducer (21), the input and the variable frequency speed governing conveying motor (22) of this transport speed reducer (21) are connected.
The pre-pressing devices (11) are two sets and are respectively positioned at the upper part and the lower part of the fiber fabric formed by the upper layer fiber web, the interlayer fiber fabric and the lower layer fiber web, each pre-pressing device comprises a pressing roller frame (23), a pre-pressing speed reducer (24) and a variable-frequency speed-regulating pre-pressing motor (25), the variable-frequency speed-regulating pre-pressing motor (25) is connected with the input end of the pre-pressing speed reducer (24), the output end of the pre-pressing speed reducer (24) is connected with the pressing roller frame (23), and the rotating directions of the two variable-frequency speed-regulating pre-pressing motors (25) are opposite.
The deviation of the automatic fabric conveying device is less than or equal to 2cm, and the tension deviation per linear meter is less than or equal to 10N; the laying speed deviation range is +/-1%.
The pre-tightening amount range of the pre-tightening device is 80% +/-1%, the pre-tightening speed deviation is less than or equal to 1%, and the fiber contact surface is smooth.
The step (1) is specifically as follows:
(1-1) laying a lower layer of fiber web on a lapping curtain in a first lapping machine, wherein the lower layer of fiber web passes through an adjustable creel;
the step (2) is specifically as follows:
(2-1) the middle layer fiber fabric is formed by humidifying radial filament fibers and weft filament fibers which are arranged on an adjustable creel by a fiber humidifying device and then performing static elimination by a static eliminating device;
(2-2) keeping the tension of the radial filament fibers subjected to static elimination according to a preset tension value through an electronic tension generator, inducing the tension through a tension induction device, then paving the radial filament fibers on a lower layer fiber net through a fiber guide device, and enabling the radial filament fibers to enter a weft fiber paving device together;
(2-3) at the weft fiber laying device, weft filament fibers are repeatedly laid on the radial filament fibers and the lower layer fiber net;
(2-4) enabling the weft-wise filament fibers, the radial filament fibers and the lower layer fiber net to jointly enter a second lapping machine;
the steps (3) and (4) are specifically as follows:
(3-1) laying the upper layer fiber web on the weft-wise filament fibers, the radial filament fibers and the lower layer fiber web entering the second lapping machine, and compacting the upper layer fiber web and the lower layer fiber web into a whole through a pre-compacting device;
the step (5) is specifically as follows:
the compressed upper layer fiber web, the weft-wise filament fibers, the radial filament fibers and the lower layer fiber web are subjected to three-stage needling by a first needling machine, a second needling machine and a third needling machine in sequence;
the step (6) is specifically as follows: and feeding the needled upper layer fiber net, the needled weft filament fibers, the needled radial filament fibers and the lower layer fiber net into a trimming coiler for coiling.
The step (2-3) specifically comprises the following steps:
a. weft-wise filament fibers arranged on a weft yarn frame keep preset tension through a tension controller;
b. the automatic fiber clamping device on the fiber laying trolley automatically clamps the head of the weft-wise filament fiber, and the clamping device on the weft creel automatically loosens the weft-wise filament fiber;
c. the fiber laying trolley moves to a lower layer of fiber mesh opposite to the weft yarn frame at a preset speed along a track on the weft laying device;
d. the clamping device on the weft creel automatically clamps the weft-wise filament fibers, and the automatic yarn breaking device cuts off the weft-wise filament fibers;
e. the automatic fiber clamping device of the fiber laying trolley is automatically opened, the head of the weft-wise filament fiber is loosened, and then the weft-wise filament fiber is laid on the lower layer of fiber net and the radial filament fiber through the automatic doffing device;
f. the fiber laying trolley automatically returns to the specified position on one side of the weft yarn frame at a set speed along the track on the weft laying device, and starts the next working cycle;
the fiber tension deviation of the weft fiber laying device is less than or equal to 3 percent; the paving distance adjusting range is 0-10 cm; the spacing deviation of the laid yarns is +/-2 mm; the deviation of the fiber cutting length is less than or equal to 1 mm; the reciprocating laying deviation is less than or equal to 2 mm.
The weft-wise fiber laying device comprises a fiber laying trolley, an automatic fiber tightening device, a weft yarn frame, a tension controller, a clamping device, an automatic yarn breaking device, an automatic doffing device and a weft laying device, wherein the clamping device is arranged on the weft yarn frame and is positioned between the tension controller and the automatic yarn breaking device, the fiber laying trolley is connected with the automatic fiber tightening device, and two ends of the weft laying device are respectively provided with the automatic doffing device.
The invention has the advantages that:
the preparation process of the fiber fabric reinforced geotextile of the short fibers comprises the steps of adding one or more layers of middle layer fabrics in the conventional geotextile, and weaving various high-strength fibers (such as glass fibers, polyester fibers, polypropylene fibers, basalt fibers and the like) or high-molecular composite material stretching strips (polypropylene stretching strips, polyester stretching strips and the like) into latticed fabrics.
The preparation method of the filament fiber reinforced geotextile comprises the steps of adding one or more layers of middle layer fabrics in the conventional geotextile, and paving latticed high-strength long fibers (such as glass fibers, basalt fibers, carbon fibers, polypropylene fibers, polyester fibers, polyamide fibers and other various synthetic fibers or inorganic fibers) in the warp and weft directions, so that the tensile property of the geotextile is greatly improved by virtue of the high-strength characteristics of the fibers, the performance of various properties of the geotextile can be effectively ensured under the condition of independent use, the engineering cost is saved, the construction strength is lower, the construction period is shortened, the comprehensive effect is obvious, and the market popularization prospect is considerable.
Drawings
Fig. 1 is a schematic structural diagram of a main body of a first embodiment of the present invention.
Fig. 2 is a schematic structural view of the automatic fabric conveying device in fig. 1.
Fig. 3 is a schematic view of the construction of the pre-press apparatus of fig. 1.
Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 5 is a top view of fig. 4.
Detailed Description
The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Referring to fig. 1 to 5, the present invention relates to a process for producing a fiber fabric reinforced geotextile, comprising the steps of:
(1) preparing a lower layer fiber net;
(2) preparing middle layer fiber fabric;
(3) preparing an upper layer fiber web;
(4) superposing the lower layer fiber web in the step (1), the middle layer fiber fabric in the step (2) and the upper layer fiber web in the step (3), and compacting and molding;
(5) carrying out needling;
(6) and (5) entering a trimming coiler for coiling.
As shown in fig. 1 to 3, a first embodiment of the present invention is: the step (1) is specifically as follows:
(1-1), short fibers (fibers such as terylene and polypropylene fibers with the length of 45-60 mm) are laid on a lapping curtain 3 through carding lapping in a first lapping machine 1 to form a lower layer fiber net 4;
(1-2) passing the lower layer web 4 in the step (1-1) through a first static elimination device 3 for static elimination;
the step (2) is specifically as follows:
(2-1) the middle layer fiber fabric is a middle layer fiber fabric 8 (glass fiber or polyester fiber warp knitting fabric), the middle layer fiber fabric 8 is subjected to static elimination through the second static elimination device 6, the tension is kept according to a preset tension value through an electronic tension generator, and the tension is induced through a tension induction device 9-1; the interlayer fiber fabric subjected to static elimination is conveyed to a lower layer fiber net 4 through a fabric conveying device 5 and enters a second lapping machine 9 together with the lower layer fiber net;
the step (3) is specifically as follows:
(3-1) carding and lapping the short fibers in a second lapping machine 9 to form an upper layer fiber web, and lapping the upper layer fiber web on the interlayer fiber fabric 8, wherein the upper layer fiber web 10, the interlayer fiber fabric 8 and the lower layer fiber web 4 are overlapped together;
the step (4) is specifically as follows:
feeding the upper layer fiber web 10, the interlayer fiber fabric 8 and the lower layer fiber web 4 in the step (3) into a pre-pressing device for pressing and forming;
the step (5) is specifically as follows:
the compressed upper layer fiber web 10, the interlayer fiber fabric 8 and the lower layer fiber web 4 are subjected to three-stage needle punching sequentially through a first needle punching machine 12, a second needle punching machine 13 and a third needle punching machine 14;
the step (6) is specifically as follows:
and (3) feeding the needled upper layer fiber net 10, the interlayer fiber fabric 8 and the lower layer fiber net 4 into a trimming coiler for coiling.
The pre-pressing devices 11 are two sets and are respectively positioned at the upper part and the lower part of the fiber fabric formed by the upper layer fiber web, the interlayer fiber fabric and the lower layer fiber web, each pre-pressing device comprises a compression roller frame 23, a pre-pressing speed reducer 24 and a variable-frequency speed-regulating pre-pressing motor 25, the variable-frequency speed-regulating pre-pressing motor 25 is connected with the input end of the pre-pressing speed reducer 24, the output end of the pre-pressing speed reducer 24 is connected with the compression roller frame 23, and the rotating directions of the two variable-frequency speed-regulating pre-pressing motors 25 are opposite.
The deviation of the automatic fabric conveying device is less than or equal to 2cm, and the tension deviation per linear meter is less than or equal to 10N; the laying speed deviation range is +/-1%.
The pre-tightening amount range of the pre-tightening device is 80% +/-1%, the pre-tightening speed deviation is less than or equal to 1%, and the fiber contact surfaces are smooth, wherein the fiber contact surfaces are the outer side surfaces of the upper layer fiber web and the lower layer fiber web.
As shown in fig. 4 and 5, the production process of the fiber fabric reinforced geotextile comprises the following steps:
the step (1) is specifically as follows:
(1-1) laying a lower layer fiber net 4 on a lapping curtain in a first lapping machine, wherein the lower layer fiber net 4 passes through an adjustable creel 4-1;
the step (2) is specifically as follows:
(2-1) the middle layer fiber fabric 8 is radial filament fibers 6-1 and weft filament fibers 11-1, and the radial filament fibers 6-1 arranged on the adjustable creel 4-1 are humidified by a fiber humidifying device 5-1 and then are subjected to static elimination by a static eliminating device;
(2-2) the electro-statically eliminated warp filament fiber 6-1 is kept in tension by an electronic tension generator 7 according to a preset tension value, is induced in tension by a tension inducing device 9-1, passes through a fiber guiding device 10-1, is laid on the lower web 4, and enters a weft fiber laying device 12 together;
(2-3) at the weft fiber laying device 12-1, weft filament fibers 11-1 are laid on the warp filament fibers 6-1 and the lower layer fiber net 4 in a reciprocating manner;
(2-4) the weft filament fibers 11-1, the warp filament fibers 6-1 and the lower layer fiber net 3 enter a second lapping machine 15 together;
the steps (3) and (4) are specifically as follows:
(3-1) laying the upper layer fiber web 10 on the weft-wise filament fibers, the radial filament fibers and the lower layer fiber web which enter the second lapping machine 9, and compacting the upper layer fiber web and the lower layer fiber web into a whole through a pre-compacting device;
the step (5) is specifically as follows:
the compressed upper layer fiber web, the weft-wise filament fibers, the radial filament fibers and the lower layer fiber web are subjected to three-stage needling by a first needling machine, a second needling machine and a third needling machine in sequence;
the step (6) is specifically as follows: and feeding the needled upper layer fiber net, the needled weft filament fibers, the needled radial filament fibers and the lower layer fiber net into a trimming coiler for coiling.
The step (2-3) specifically comprises the following steps:
a. the weft filament fibers mounted on the weft creel 221 are kept at a preset tension by a tension controller;
b. the fiber automatic clamping device 141 on the fiber laying trolley 131 automatically clamps the head of the weft filament fiber, and the clamping device 241 on the weft creel automatically loosens the weft filament fiber;
c. the fiber laying trolley 131 moves to the lower layer of fiber mesh opposite to the weft yarn frame at a preset speed along the track on the weft laying device 271;
d. the clamping device 241 on the weft frame 221 automatically clamps the weft filament fibers, and the automatic yarn cutting device 251 cuts the weft filament fibers;
e. the automatic fiber tightening device 141 of the fiber laying trolley 131 is automatically opened, the head of the weft filament fiber is loosened, and then the weft filament fiber is laid on the lower layer fiber net and the radial filament fiber through the automatic doffing device 261;
f. the fiber laying trolley 131 automatically returns to the designated position on one side of the weft creel at a set speed along the track on the weft laying device, and starts the next working cycle;
the fiber tension deviation of the weft fiber laying device is less than or equal to 3 percent; the paving distance adjusting range is 0-10 cm; the spacing deviation of the laid yarns is +/-2 mm; the deviation of the fiber cutting length is less than or equal to 1 mm; the reciprocating laying deviation is less than or equal to 2 mm.
The weft fiber laying device comprises a fiber laying trolley, an automatic fiber clamping device 14, a weft yarn frame 22, a tension controller 23, a clamping device 24, an automatic yarn breaking device 25, an automatic doffing device 26 and a weft laying device 27, wherein the clamping device 24 is arranged on the weft yarn frame 22, and is positioned between the tension controller 23 and the automatic yarn cutting device 25, the fiber laying trolley 13 is connected with the automatic fiber clamping device 14, the automatic fiber clamping device is arranged on the trolley, clamps the fibers and moves to the opposite side along with the fiber laying trolley to realize the transverse laying of the yarns, two ends of the weft laying device 27 are respectively provided with an automatic doffing device 26, and the above mentioned automatic fiber clamping device 14, clamping device 24, automatic yarn breaking device 25, automatic doffing device 26 and weft laying device 27 all belong to devices commonly used in the field of fiber processing, and are prior art.
Claims (10)
1. The production process of the fiber fabric reinforced geotextile is characterized by comprising the following steps:
(1) preparing a lower layer fiber net;
(2) preparing middle layer fiber fabric;
(3) preparing an upper layer fiber web;
(4) superposing the lower layer fiber web in the step (1), the middle layer fiber fabric in the step (2) and the upper layer fiber web in the step (3), and compacting and molding;
(5) carrying out needling;
(6) and (5) entering a trimming coiler for coiling.
2. The production process of the fiber fabric reinforced geotextile according to claim 1, wherein the step (1) is specifically as follows:
(1-1) laying short fibers on a lapping curtain through carding lapping in a first lapping machine to form a lower-layer fiber net;
(1-2) conducting static elimination on the lower layer fiber web in the step (1-1) through a first static elimination device;
the step (2) is specifically as follows:
(2-1) the middle layer fiber fabric is a sandwich layer fiber fabric, the sandwich layer fiber fabric is subjected to static elimination through a second static elimination device, the tension is kept according to a preset tension value through an electronic tension generator, and the tension is induced through a tension induction device; conveying the interlayer fiber fabric subjected to static elimination to a lower layer fiber net through an automatic fabric conveying device, and feeding the interlayer fiber fabric and the lower layer fiber net into a second lapping machine;
the step (3) is specifically as follows:
(3-1) carding and lapping the short fibers in a second lapping machine to form an upper layer fiber net, and lapping the upper layer fiber net on the interlayer fiber fabric, wherein the upper layer fiber net, the interlayer fiber fabric and the lower layer fiber net are overlapped together;
the step (4) is specifically as follows:
feeding the upper layer fiber web, the interlayer fiber fabric and the lower layer fiber web obtained in the step (3) into a pre-pressing device for pressing and forming;
the step (5) is specifically as follows:
the compressed upper layer fiber web, the interlayer fiber fabric and the lower layer fiber web are subjected to three-stage needling by a first needling machine, a second needling machine and a third needling machine in sequence;
the step (6) is specifically as follows:
and (4) feeding the needled upper layer fiber net, the needled interlayer fiber fabric and the needled lower layer fiber net into a trimming and coiling machine for coiling.
3. The process for producing a fiber fabric reinforced geotextile according to claim 2, the fabric conveying device (5) comprises a brake (16), a brake chuck (17), a winding drum (18), a supporting plate (19), a friction clutch (20), a conveying speed reducer (21) and a variable-frequency speed-regulating conveying motor (22), wherein the brake chuck (17) is connected with two ends of the winding drum (18), a supporting plate (19) is arranged on the outer side of each brake chuck (17), a brake (16) connected with one brake chuck (17) is arranged on one support plate (19), a friction clutch (20) connected with the other brake chuck (17) is arranged on the other supporting plate (19), the friction clutch (20) is connected with the output end of the conveying speed reducer (21), the input end of the conveying speed reducer (21) is connected with a variable-frequency speed-regulating conveying motor (22).
4. The production process of the fiber fabric reinforced geotextile according to claim 2, wherein the number of the pre-pressing devices (11) is two, the pre-pressing devices are respectively positioned at the upper part and the lower part of the fiber fabric formed by the upper layer fiber web, the interlayer fiber web and the lower layer fiber web, each pre-pressing device comprises a compression roller frame (23), a pre-pressing speed reducer (24) and a variable-frequency speed-regulating pre-pressing motor (25), the variable-frequency speed-regulating pre-pressing motor (25) is connected with the input end of the pre-pressing speed reducer (24), the output end of the pre-pressing speed reducer (24) is connected with the compression roller frame (23), and the rotating directions of the two variable-frequency speed-regulating pre-pressing motors (25) are opposite.
5. The production process of the fiber fabric reinforced geotextile according to claim 3, wherein the deflection of the fabric automatic conveying device is less than or equal to 2cm, and the tension deviation per linear meter is less than or equal to 10N; the laying speed deviation range is +/-1%.
6. The production process of the fiber fabric reinforced geotextile according to claim 3, wherein the pre-tightening amount of the pre-tightening device is within 80% ± 1%, the pre-tightening speed deviation is less than or equal to 1%, and the fiber contact surface is smooth.
7. The production process of the fiber fabric reinforced geotextile according to claim 1, wherein the step (1) is specifically as follows:
(1-1) laying a lower layer of fiber web on a lapping curtain in a first lapping machine, wherein the lower layer of fiber web passes through an adjustable creel;
the step (2) is specifically as follows:
(2-1) the middle layer fiber fabric is formed by humidifying radial filament fibers and weft filament fibers which are arranged on an adjustable creel by a fiber humidifying device and then performing static elimination by a static eliminating device;
(2-2) keeping the tension of the radial filament fibers subjected to static elimination according to a preset tension value through an electronic tension generator, inducing the tension through a tension induction device, then paving the radial filament fibers on a lower layer fiber net through a fiber guide device, and enabling the radial filament fibers to enter a weft fiber paving device together;
(2-3) at the weft fiber laying device, weft filament fibers are repeatedly laid on the radial filament fibers and the lower layer fiber net;
(2-4) enabling the weft-wise filament fibers, the radial filament fibers and the lower layer fiber net to jointly enter a second lapping machine;
the steps (3) and (4) are specifically as follows:
(3-1) laying the upper layer fiber web on the weft-wise filament fibers, the radial filament fibers and the lower layer fiber web entering the second lapping machine, and compacting the upper layer fiber web and the lower layer fiber web into a whole through a pre-compacting device;
the step (5) is specifically as follows:
the compressed upper layer fiber web, the weft-wise filament fibers, the radial filament fibers and the lower layer fiber web are subjected to three-stage needling by a first needling machine, a second needling machine and a third needling machine in sequence;
the step (6) is specifically as follows: and feeding the needled upper layer fiber net, the needled weft filament fibers, the needled radial filament fibers and the lower layer fiber net into a trimming coiler for coiling.
8. The production process of the filament fiber reinforced geotextile according to claim 7, wherein the step (2-3) comprises the following steps:
a. weft-wise filament fibers arranged on a weft yarn frame keep preset tension through a tension controller;
b. the automatic fiber clamping device on the fiber laying trolley automatically clamps the head of the weft-wise filament fiber, and the clamping device on the weft creel automatically loosens the weft-wise filament fiber;
c. the fiber laying trolley moves to a lower layer of fiber mesh opposite to the weft yarn frame at a preset speed along a track on the weft laying device;
d. the clamping device on the weft creel automatically clamps the weft-wise filament fibers, and the automatic yarn breaking device cuts off the weft-wise filament fibers;
e. the automatic fiber clamping device of the fiber laying trolley is automatically opened, the head of the weft-wise filament fiber is loosened, and then the weft-wise filament fiber is laid on the lower layer of fiber net and the radial filament fiber through the automatic doffing device;
f. the fiber laying trolley automatically returns to the appointed position on one side of the weft yarn frame along the track on the weft laying device at a set speed, and the next working cycle is started.
9. The production process of the fiber fabric reinforced geotextile according to claim 7, wherein the fiber tension deviation of the weft fiber laying device is less than or equal to 3 percent; the paving distance adjusting range is 0-10 cm; the spacing deviation of the laid yarns is +/-2 mm; the deviation of the fiber cutting length is less than or equal to 1 mm; the reciprocating laying deviation is less than or equal to 2 mm.
10. The process for producing the fiber fabric reinforced geotextile according to claim 9, wherein the weft-wise fiber laying device comprises a fiber laying trolley, a fiber automatic tightening device, a weft frame, a tension controller, a clamping device, an automatic yarn breaking device, an automatic doffing device and a weft laying device, the clamping device is arranged on the weft frame and positioned between the tension controller and the automatic yarn breaking device, the fiber laying trolley is connected with the fiber automatic tightening device, and the two ends of the weft laying device are respectively provided with the automatic doffing device.
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| CN201911364513.XA CN111020875A (en) | 2019-12-26 | 2019-12-26 | Production process of fiber fabric reinforced geotextile |
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Application publication date: 20200417 |