1066 results about "Braid" patented technology

The invention provides a low-voltage cable, and relates to the technical field of cables, the low-voltage cable comprises a conductor layer, a support layer, a shielding layer and a sheath layer, the conductor layer is composed of multiple strands of fractal stranded conductors, and each fractal stranded conductor comprises an inner-layer superfine silver-plated copper wire, a middle-layer copper-clad aluminum wire and an outer-layer nickel-plated copper alloy wire; the supporting layer wraps the conductor layer and comprises an inner supporting layer, a dynamic framework layer and an outer restraint layer, the inner supporting layer is an obliquely wound aramid fiber woven belt, the dynamic framework layer is formed by alternately arranging shape memory polymers and carbon fiber composite belts, and the outer restraint layer is a spirally wound silica gel-glass fiber composite rope. The shielding layer comprises a tinned copper wire woven mesh; the sheath layer is a thermoplastic polyurethane matrix, a microcapsule self-repairing agent is dispersed in the thermoplastic polyurethane matrix, a microcapsule comprises a siloxane prepolymer, and the thermoplastic polyurethane matrix further comprises graphene nanosheets. Through collaborative design of the fractal stranded conductor layer, the dynamic skeleton support layer, the shielding layer and the self-repairing sheath, comprehensive improvement of cable performance is realized.

A rigidizing device includes an elongate flexible tube, a braid layer positioned over the elongate flexible tube, an outer layer over the flexible tube and the braid layer, and an inlet between the elongate flexible tube and the outer layer and configured to attach to a source of vacuum or pressure. The braid layer has a plurality of strands braided together at a braid angle of 5-40 degrees relative to a longitudinal axis of the elongate flexible tube when the elongate flexible tube is straight. The rigidizing device is configured to have a rigid configuration when vacuum or pressure is applied through the inlet and a flexible configuration when vacuum or pressure is not applied through the inlet. The braid angle is configured to change as the rigidizing device bends when the rigidizing device is in the flexible configuration.

Systems and methods for forming a tubular braid are disclosed herein. A braiding system configured in accordance with embodiments of the present technology can include, for example, an upper drive unit, a lower drive unit, a mandrel coaxial with the upper and lower drive units, and a plurality of tubes extending between the upper drive unit and the lower drive unit. Each tube can be configured to receive individual filaments for forming the tubular braid, and the upper drive unit and the lower drive unit can act against the tubes in synchronization to cross the filaments over and under one another to form the tubular braid on the mandrel.

The utility model relates to a crochet woven belt. The crochet woven belt comprises warp yarns, bottom-layer weft insertion yarns, middle-layer weft insertion yarns and surface-layer weft insertion yarns. The bottom-layer weft insertion yarns and the surface-layer weft insertion yarns are interwoven with the warp yarns; the middle-layer weft insertion yarns are arranged on the bottom-layer weft insertion yarns and are a plurality of straight yarns which are not interwoven with the warp yarns. The surface-layer weft insertion yarns are arranged on the sides, away from the bottom-layer weft insertion yarns, of the middle-layer weft insertion yarns and partially cover the middle-layer weft insertion yarns. The crochet woven belt is provided with the warp yarns and the bottom layer weft insertion yarns which are interwoven, and is provided with the middle layer weft insertion yarns which are not interwoven with the warp yarns, so that patterns which are not influenced by colors of the warp yarns are presented on the surface of the woven belt; and the surface layer weft insertion yarns partially covering the middle layer weft insertion yarns are arranged, so that the surface of the braid presents a stereoscopic pattern. The crochet woven belt can present patterns with stereoscopic impression, the weaving process is simpler and more convenient than tatting, materials are few, the cost is low, and the whole woven belt is light, attractive in appearance and suitable for being used as a decoration strip of clothes.

The invention relates to the technical field of knitting, and provides a sinker for a single-side knitting circular weft knitting machine and a knitting technology, the sinker comprises the single-side knitting circular weft knitting machine, the single-side knitting circular weft knitting machine comprises a sinker triangle and a corresponding first sinker, the middle part or the rear end of a first piece heel track is provided with a first piece heel which protrudes upwards and is matched with the sinker triangle, and a second piece heel track is arranged at the rear end of the first piece heel track. A first upper piece jaw is arranged at the front end of the first piece heel rail and above the first lower piece jaw, and a first piece nose is arranged above the first upper piece jaw; the weaving mode of the single-side knitting circular knitting machine comprises looping weaving, tucking weaving and floating thread weaving which are carried out by matching the sinker triangle with the first sinker, and further comprises reserved looping weaving or reserved tucking weaving which is carried out by matching the sinker triangle with the first sinker. The problems that weft-knitted fabric of an existing single-side knitting circular weft knitting machine is poor in stability, prone to loosening and curling, not stiff and smooth enough and prone to fuzzing and pilling are solved.

The invention belongs to the technical field of superconducting cables, and discloses a superconducting cable, a preparation method and a preparation device.The preparation method of the superconducting cable comprises the steps that a core wire, X superconducting wires and Y carbon fibers are prepared, the X superconducting wires and the Y carbon fibers are used for being woven on the surface of the core wire, and Y is smaller than or equal to X; spirally winding a hot melt adhesive film on the surfaces of the Y carbon fibers; the core wire, the superconducting wires and the carbon fibers are woven in a heating environment, and the X superconducting wires and the Y carbon fibers wound with the hot melt adhesive films are woven on the surface of the core wire under the heating condition; cooling the heated and braided superconducting cable through conveying; and after cooling, wrapping an insulating layer outside the superconducting braid layer formed by the superconducting wires and the carbon fibers. In conclusion, the superconducting braid layer of the superconducting cable is formed by mixing and weaving the superconducting wires and the carbon fibers, and the hot melt adhesive film is spirally wound on the surfaces of the carbon fibers, so that the core wires, the superconducting wires and the carbon fibers are bonded with one another after weaving, and the structural strength of the whole cable is improved.

The invention belongs to the technical field of cables, and particularly relates to a bending-resistant tow chain cable for a robot, which comprises a conductor core layer, an insulating layer, an inner sheath layer, a braid layer, a non-woven fabric layer and an outer sheath layer, the insulating layer wraps the conductor core layer, the inner sheath layer is positioned outside the insulating layer, the braid layer covers the inner sheath layer, the non-woven fabric layer is positioned outside the inner sheath layer, and the non-woven fabric layer is positioned outside the outer sheath layer. The non-woven fabric layer is wound on the braid layer, the outer sheath layer wraps the non-woven fabric layer, the conductor core layer is formed by twisting a plurality of flexible tinned copper wires and aramid fibers, and the surfaces of the flexible tinned copper wires are coated with carbon nanotube coatings; according to the invention, the thickness of the carbon nanotube coating is controlled to be 3-5 [mu] m, and the carbon nanotube coating is prepared by adopting a coating process, has excellent conductivity and mechanical strength, can effectively reduce the contact resistance change of the flexible tinned copper wire in the repeated winding process, and enhances the wear resistance and corrosion resistance of the surface of the copper wire, thereby prolonging the service life of the conductor core layer.

The invention provides a coordinated control method and system for a pultrusion line, and belongs to the technical field of plastic state substance processing. The production requirement information is analyzed, and a weaving instruction is sent to a weaving machine to weave a net-shaped layer; controlling a winding machine to wind wefts to obtain a fiber braided fabric; injecting liquid resin into the fiber braided fabric; and the fiber braided fabric injected with the liquid resin is heated, cured and formed through pultrusion equipment, speed coordination control is conducted based on a traction machine, and a target production product is pulled out through pultrusion and traction. According to the pultrusion line coordination control method and system, the fiber braided fabric is braided and wound on the basis of the production requirement information, the liquid resin is injected into the fiber braided fabric, the fiber braided fabric injected with the liquid resin is heated, cured and formed through the pultrusion equipment, and speed coordination control is conducted on the basis of the traction machine; and a target production product is pulled out through pultrusion, so that the production efficiency of the extruded and drawn wire is greatly improved.

According to the large-tow carbon fiber composite material device and the preparation method, large-tow carbon fibers to be spread are subjected to yarn spreading treatment through the multi-stage yarn splitting roller set, the multi-stage yarn splitting roller set is formed by alternately arranging the hot rollers and the non-hot rollers, and therefore the situation that due to the arrangement, the yarn spreading speed is low, the fibers are excessively softened can be avoided. The shortest flow guide path is adopted to infiltrate the large-tow carbon fibers subjected to yarn spreading treatment, and the shorter the flow guide path is, the smaller the porosity of the composite material is, so that the mechanical property of the finally prepared large-tow carbon fiber warp knitting fabric composite material is greatly improved, and the mechanical level of the small-tow carbon fiber prepreg is achieved.

The invention relates to a production process of an elastic braid, which realizes transverse elasticity consistency and edge warping inhibition of the braid by constructing a full-flow tension balance control and structural stability enhancement mechanism. According to the process, composite elastic yarn provided with a photoelastic coating is utilized, tension is regulated and controlled through a multi-point micro traction structure driven by piezoelectricity, and the tension difference value of a braid within the range of every 2 mm is controlled within + / -0.03 N. A double-sided weft knitting system is adopted, thermal response type microcapsules are implanted into the edge of the braid in the knitting process, and the microcapsules release cross-linked components in the thermal treatment process to enhance the edge shaping stability. The heat treatment device is of a closed structure and is provided with an infrared heating area, a master control constant-temperature area and a blast cooling area, the constant-temperature area is integrated with a phase-change material buffer module and a tension feedback system, and the consistency of temperature control precision and transverse heat distribution is achieved. The winding state is compensated in real time through a laser scanning and flexible guide rail linkage device, and the high-performance elastic braid which is uniform in structure and stable in elasticity is obtained.

The utility model provides a coaxial line automatic weaving supporting device and a connector processing production line. The device comprises a mounting platform; the chopping and pressing assembly is arranged on the mounting platform, a machining through hole is formed in the chopping and pressing assembly, the coaxial line penetrates through the machining through hole, and the chopping and pressing assembly can cut the coaxial line, so that part of the braid layer is cut off, and part of the inner core is exposed; the knitting pushing assembly is arranged on the mounting platform; the knitting pushing assembly comprises a sleeve and an air blowing unit arranged around the sleeve. The inner wall of the sleeve can drive part of the cut-off braid layer to move in the direction away from the inner core, and the air blowing unit can blow air to the braid layer while the braid layer moves. According to the device, the coaxial line can be automatically expanded, the inner core and the braid layer can be expanded, and after the braid is chopped, pressed and loosened, the braid layer can be quickly and uniformly expanded through the synergistic effect of the sleeve and the air blowing unit, so that the braid is treated in place in one step, and the product short-circuit scrapping caused by the residual braid wire is reduced.

Product use by means of the invention for dyeing and coloring or the like of substrates made of fibers, fiber cables, yarns made of cut and filament fibers, flat structures such as woven fabrics, knitted fabrics, warp-knitted fabrics, non-woven fabrics and ready-made clothing and home textiles and the like, in particular of textiles with 100% or with mixtures thereof. These can be made of plant and animal natural fibers, stem fibers, synthetic fibers of petrochemical or natural origin as well as special fibers such as soy fibers, milk fibers, bamboo fibers or fibers that are difficult to dye such as aramid, polypropylene.

The utility model discloses a modular knitted vamp and a modular shoe, and relates to the technical field of vamps. The modular knitted vamp comprises a plurality of independent knitted module units, each knitted module unit is divided according to different functional areas of the vamp, knitting yarns with corresponding characteristics are used for knitting into different texture structures and contour shapes, each knitted module unit can be independently disassembled, assembled and replaced, and the knitted module units can be independently disassembled, assembled and replaced. Braids or ropes are woven on the edges of the knitting module units, and through holes are further formed in the edges of the knitting module units. According to the modularized knitted vamp, due to the fact that all the knitted module units can be manufactured at the same time, the production period is greatly shortened, meanwhile, material waste is reduced through the modularized design, the manufacturing cost of shoes can be reduced, and the modularized knitted vamp is more environmentally friendly.

The invention relates to the technical field of medical instruments, in particular to an artificial ligament braided fabric. The artificial ligament braided fabric comprises a braided part, the braided part is formed by interweaving warp yarns and weft yarns, a mesh staggered structure is formed, the warp yarns extend in the width direction of the braided part, and the weft yarns extend in the length direction of the braided part. Compared with the prior art, by optimizing the weaving structure and the size design, the complex movement requirements of various joint parts such as the ankle joint and the acromioclavicular joint can be met, the stable fixing effect is provided, and the risks of loosening and shifting of the graft are reduced.

The invention relates to the technical field of composite materials, and discloses a carbon fiber prepreg for grating array fiber implantation and a preparation method thereof. The unidirectional carbon fiber prepreg is formed by impregnating unidirectional fiber cloth in a resin mixture and curing the unidirectional fiber cloth, the unidirectional fiber cloth is formed by weaving unidirectional optical fiber wires, and each unidirectional optical fiber wire comprises a grating array optical fiber and a plurality of carbon fibers wrapping the grating array optical fiber. The braided carbon fiber prepreg comprises a carbon fiber braided fabric composed of a plurality of carbon fibers and grating array optical fibers arranged on the surface of the carbon fiber braided fabric, and the carbon fibers and the grating array optical fibers are connected into a whole through a resin mixture. According to the method, the grating array optical fiber is implanted in advance in the preparation process of the carbon fiber prepreg, so that the consistency of the quality and the performance of batch products can be ensured, the processing flow is simplified, the production efficiency is improved, the production cost is reduced, the aging degree of the prepreg can be judged, and the performance of the prepreg can be evaluated.

The invention discloses a bamboo-based composite unmanned aerial vehicle radome and a manufacturing method thereof.The radome comprises a cover-shaped body and an extension part, the peripheral wall of the tail end of the cover-shaped body integrally extends to form a limiting ring, one end of the extension part is arranged and riveted to the peripheral wall of the limiting ring in a sleeving mode, and the other end of the extension part extends outwards in a divergent mode; the cover-shaped main body is formed by a cover-shaped braided fabric formed by a bamboo fiber reinforced resin matrix composite material, and the extension part is formed by any one of an extension braided fabric formed by the bamboo fiber reinforced resin matrix composite material or an extension layering structure formed by the bamboo fiber reinforced resin matrix composite material; a plurality of layers of cover-shaped braided fabric, extension braided fabric and extension layering structures are laid and stacked according to angles, and the radome is obtained through bamboo material treatment, bamboo material preparation, bamboo material weaving and layering, vacuum resin filling and post-treatment. The radome not only has the characteristics of light weight and high strength, but also is relatively low in cost, good in environmental protection performance and good in wave transmission rate.

The invention relates to a carbon fiber reinforced silicon carbide-based composite material with an anti-ablation gradient composite coating on the surface and a preparation method of the carbon fiber reinforced silicon carbide-based composite material. The preparation method comprises the following steps: depositing an interface layer on fibers of a fiber woven body; carrying out primary densification by using polycarbosilane through a precursor impregnation liquid process; further densifying by using a furfuryl ketone resin steeping liquor containing molybdenum powder; implementing a Si powder reactive infiltration process; and preparing an Hf2Ta6O17 coating by using an embedding infiltration process to prepare the C / SiC composite material with the anti-ablation gradient composite coating on the surface. The invention also provides the carbon fiber reinforced silicon carbide-based composite material prepared by the method. In the gradient coating of the prepared composite material, the SiC-MoSi2 layer relieves the difference of thermal expansion coefficients and realizes self-healing, and the Hf2Ta6O17 layer provides ultrahigh-temperature stability. The composite material prepared by the method disclosed by the invention has excellent ablation resistance and high-temperature mechanical property at the temperature of 2200 DEG C or above.

The utility model discloses an integrally formed buffer braid, which comprises a braid body formed by integrally weaving warps and wefts, the braid body comprises a weft elastic layer, a buffer layer and a covering layer which are integrally woven, the weft elastic layer has a weft retraction function, the edge of the covering layer is connected with the weft elastic layer, and the buffer layer is connected with the edge of the covering layer. The buffer layer is clamped between the weft-direction elastic layer and the covering layer, the weft-direction elastic layer pulls back the buffer layer and the covering layer in the weft direction, so that the buffer layer and the covering layer are in a contraction state to form an arch, the weft-direction elastic layer comprises weft yarns Y1, the covering layer comprises weft yarns Y3, the elongation at break of the weft yarns Y1 is larger than that of the weft yarns Y3, and the weft-direction elastic layer comprises weft yarns Y2 and weft yarns Y3. And the elongation at break of the weft yarns Y1 is greater than or equal to 150%. The woven tape has good buffering performance, the comfort and the attractiveness of the woven tape in use are improved, the types of the woven tape are enriched, and the woven tape can be widely applied to the fields of shoulder straps, shrouds, waistbands and the like.

A tubular medical device (10) includes a flexible body (12) having a proximal portion and a distal portion (16) including a distal end (14). The flexible body is formed of a plurality of braided filaments (26,28). The flexible body includes a longitudinal axis (25) extending from the proximal portion to the distal end. The flexible body includes a first braid density at a first radial location and a second braid density at a second radial location, the first radial location and the second radial location being at a same axial location along the longitudinal axis.

The invention provides an intelligent tension control method and system for a three-dimensional weaving machine, and the method comprises the steps: determining the standard tension ranges of the three-dimensional weaving machine in weft releasing, weft insertion and beating-up processes based on weaving process parameters in combination with the acceptance standard of a three-dimensional braided fabric; based on a visual sensor and a tension sensor, tension monitoring is carried out on the track processes of the weft releasing track, the weft insertion track and the beating-up track, and the tension which does not conform to the standard tension range and the corresponding target track are determined; based on the intelligent adjustment rule, the tension and the corresponding target track are combined, the adjustment parameters of the weft motor are intelligently output, the weft motor is intelligently adjusted according to the adjustment parameters, the tension of the three-dimensional weaving machine in the working process all the time meets the requirement, and the quality of the finally generated three-dimensional weaving composite material is guaranteed.

A method for rapidly preparing high-density C / C composites based on polyarylacetylene resin. The purpose of the present invention is to solve the problems of long preparation cycle, low graphitization degree, poor ablation resistance, etc. of existing C / C composites. Preparation method: First, mix polyarylacetylene resin and solvent; Second, perform vacuum impregnation on the low-viscosity resin solution and carbon fiber braid; Third, perform isostatic pressing treatment; Fourth, cure in an oven; Fifth, perform pyrolysis treatment; Sixth, perform graphitization treatment; Seventh, impregnate the graphitized C / C composite into the low-viscosity resin solution, and then perform vacuum impregnation, isostatic pressing treatment, curing treatment, pyrolysis treatment, and graphitization treatment; Eighth, repeat step seven multiple times. The C / C composites obtained by the present invention can have a density greater than 1.90 g / cm<supgt;3< / supgt;, high density, excellent mechanical properties and oxidation ablation resistance, short preparation cycle, low equipment dependence, and can be used for the preparation of large-sized C / C composites with complex shapes.

The utility model discloses a braid splicing device which comprises a supporting seat, a first transmission column, a second transmission column, a limiting portion, a sewing machine, a power component and a controller, the first transmission column and the second transmission column are arranged on the supporting seat, and the position of the first transmission column and / or the second transmission column relative to the supporting seat can be adjusted. The first transmission column and / or the second transmission column are / is connected with the power component, the controller is electrically connected to the power component and the sewing machine, when the braid is wound around the first transmission column and the second transmission column, the braid is located on the inner side of the limiting part, the limiting part is used for abutting against the braid to enable the braid to move towards the inner side, and the controller can control the power component to operate. The first transmission column and / or the second transmission column are / is driven to rotate, the sewing machine is synchronously controlled to operate, and adjacent braids can be spliced. According to the device for splicing the ribbon and other strip-shaped objects, manpower and material resources are saved, large carpets / ground mats can be formed, and application and popularization are facilitated.

The invention discloses a cable braid layer processing device and a cable braid layer processing method. The cable braid layer processing device comprises a clamp which comprises a pair of clamp half bodies used for being clamped on an outer coating layer of a cable; and the pair of roller brushes is used for backwards folding the exposed braid layer of the cable onto the clamp. When the braid layer is turned over, the braid layer of the cable enters the position between the pair of roller brushes and is turned over backwards to the clamp by the rotating pair of roller brushes. According to the cable braid layer processing device, the cable braid layer can be automatically turned over and cut, and the processing efficiency of the cable braid layer is improved.

Soft nylon strips that can be braided around the hair after it has been parted into sections. After the hair is braided, the braid is inserted into the nylon sock. Pull the hair behind the head and tie the braids together. If you can't reach, you can pin the braid to the head using a bobby pin. You can leave the cords in overnight. The longer the strips are left in, the more the hair is stretched.

Interlock knit textiles and methods of forming and using interlock knit textiles are described. Three structural properties have been found to contribute to improved stretch properties in interlock knits. The three structural properties include the use of a unique knitted loop shape, the use of fine filament yarns, and the use of elasticated yarns having lower hysteresis than conventional elastane. The described interlock knit textiles can include one, two or all three of these structural properties. The improved stretch properties can include values for percent elongation or modulus in the length direction which are close to or the same as their values in the width direction.

A fabric with high sewing strength comprises a first fabric layer, a second fabric layer and at least one braid, the first fabric layer and the second fabric layer are connected with each other, and the first fabric layer and the second fabric layer are at least partially overlapped at the joint; the braid is arranged in the overlapping area of the first fabric layer and the second fabric layer, and the braid, the first fabric layer and the second fabric layer are integrally sewn through sewing lines. Due to the fact that the braid is arranged in the overlapping area of the first fabric layer and the second fabric layer, and the braid, the first fabric layer and the second fabric layer are integrally sewn through the sewing threads, the connection strength of the first fabric layer and the second fabric layer at the sewing position is greatly improved, and the possibility that the first fabric layer and the second fabric layer are broken and off the threads at the sewing position is reduced; and the attractiveness and durability of the textile are ensured.

The application discloses an impact-resistant mine protective clothing and belongs to the technical field of mine protective clothing. The mine protective clothing is provided with an impact-resistant protective layer, and the impact-resistant protective layer comprises alternately stacked and connected first and second functional layers. The outermost layer of the impact-resistant protective layer towards the outside of a wearer of the protective clothing is the first functional layer, the first functional layer is a composite material layer composed of aramid woven fabric and a second resin, the second resin is filled in the fiber gap of the aramid woven fabric as a continuous matrix and covers the fiber surface, the weaving raw material of the aramid woven fabric is aramid monofilament subjected to first resin impregnation pretreatment, the first and second resins are both thermosetting resins, the first resin comprises a first compound, the first compound contains a morpholine ring and is bonded in a crosslinking network of the first resin, and the second functional layer is a dynamic crosslinking polymer layer. Compared with the prior art, the application can not only resist impact and be hard, but also absorb impact force and reduce the risk of blunt injury of personnel.

The utility model discloses a flexible connection mechanical property testing device which comprises a mechanical property tester body, a coordinate sliding block is fixedly installed at the bottom of the mechanical property tester body, a test adjusting mechanism is arranged in the coordinate sliding block, and connecting blocks are fixedly installed on the two sides of the surface of the coordinate sliding block. One end of the connecting block is in threaded connection with a locking screw, one side of the surface of the locking screw is in threaded connection with a U-shaped plate, the two ends of the U-shaped plate are fixedly connected with belt buckles through bolts, aramid fiber braids are fixedly installed in the belt buckles, V-shaped blocks are fixedly installed on the surfaces of the aramid fiber braids, and positioning magnetic columns are fixedly installed on the two sides of the surfaces of the V-shaped blocks. Compared with the prior art, the device has the following effects that the aramid braid is adopted as the connecting piece, so that the device can adapt to more diversified test environments, tests can be effectively carried out on test pieces with narrow spaces or complicated shapes, and the flexibility and the applicability of the tests are improved.

An intravascular device that includes a delivery sheath, a shaped braid comprising a distal braid layer and a proximal braid layer, and an inner member comprising a proximal end and a distal end, the inner member disposed between the proximal braid layer and the distal braid layer of the shaped braid. The intravascular device further includes a first configuration, the shaped braid and the inner member having a first length, and a second configuration, the shaped braid and the inner member having a second length wherein the first length is greater than the second length.

To provide a lightweight, three-dimensional warp-knitted fabric that offers cushioning and flexibility when folded, similar to soft polyurethane foam. [Solution] The three-dimensional warp knitted fabric according to this embodiment is a three-dimensional warp knitted fabric knitted with a three-reed. The three-dimensional warp knitted fabric consists of a face fabric structure, a backing fabric structure, and a connecting structure that connects the face fabric structure and the backing fabric structure. The connecting yarn constituting the connecting structure is a multifilament crimped yarn with a total fineness of 80 to 170 dtex and a single fiber fineness of 2 to 5 dtex. The connecting structure is a diagonal connecting structure or a truss connecting structure. The weight of the three-dimensional warp knitted fabric is 550 g / m 2 The following applies: