35results about How to "Easy to curl" patented technology

The invention discloses application of a rice gene SLL4 in regulation and control of a rice leaf shape, and belongs to the technical field of plant genetic engineering. The nucleotide sequence of the SLL4 gene is as shown in SEQ ID NO. 1; the rice gene SLL4 regulates and controls the development of blister cells and thick-walled cells so as to influence the growth form of leaves, and overexpresses the SLL4 gene in rice, so that the curling degree of the leaves can be increased. The method disclosed by the invention is applied to production practice, is beneficial to shaping ideal plant types of rice and increasing the yield of crops, and has an important application value.

The utility model provides a quick-dry cool stiff and smooth warp knitting fabric, which is formed by knitting at least two guide bars GB1 and GB2, yarns adopted by the guide bar GB1 are high mechanical elasticity synthetic fiber filaments with circular or special-shaped sections, the crimp shrinkage rate of the high mechanical elasticity synthetic fiber filaments must be greater than 25%, and the crimp shrinkage rate of the high mechanical elasticity synthetic fiber filaments must be greater than 25%. Yarns adopted by the GB2 guide bar are elastic polyurethane filaments, the thickness of the high-mechanical-elasticity synthetic fiber filaments is 20-50D, and the thickness of the elastic polyurethane filaments is smaller than or equal to 55D. The high-mechanical-elasticity synthetic fiber filaments with the special-shaped cross sections are adopted, the contact area between fibers and air is large, diffusion and evaporation of water on the surfaces of the fibers are facilitated, and a wearer has the experience of quick-dry and cool feeling after wearing the fabric; meanwhile, due to the high crimp rate of the high-mechanical-elasticity synthetic fiber filaments, the fabric can have high stiffness and smoothness; the fabric obtained by weaving the high-mechanical-elasticity synthetic fiber filaments and the elastic spandex filaments has good elasticity, and the wearing comfort of a user is improved.

The utility model relates to the technical field of marine machinery, in particular to an electric outboard engine which comprises a main shaft, a base is arranged on the upper portion of the main shaft, a driving assembly is arranged on the lower portion of the main shaft, the main shaft is hinged to the lower portion of the base, a locking assembly and a tilting assembly are arranged on the base, and the locking assembly can limit the rotation angle of the main shaft. The upwarp assembly comprises an upwarp handle and a traction rope, the upwarp handle is hinged to the base, and the two ends of the traction rope are connected with the upwarp handle and the main shaft respectively. According to the electric outboard engine, the structure of the electric outboard engine is optimized, whole engine upwarp is changed into lower half part upwarp when upwarp is controlled, the upwarp action is more convenient and labor-saving, the main shaft is hinged to the lower portion of the base, the main shaft is attached to the base after rotating by 90 degrees in the upwarp state and is similar to the folding state, the main shaft upwarps when a ship is not needed, and therefore the ship is not needed to be used. The outboard engine drives the motor and the propeller to break away from the water surface, corrosion of seawater is reduced, in addition, the length direction can be greatly shortened after upwarping, and storage and transportation are more convenient.

The utility model discloses a blowing assembly and a hair blower with airflow distribution, which comprise a cylindrical hair curling outer cylinder and a built-in airflow distributor installed in the hair curling outer cylinder, the outer surface of the hair curling outer cylinder extends to form a self-suction cambered surface for winding hair, the hair curling outer cylinder is provided with a plurality of strip-shaped air outlets, and the strip-shaped air outlets are connected with the built-in airflow distributor. The air flow distributor is characterized in that air flow distribution plates are arranged on the air flow distributor, air outlet holes are formed between the adjacent air flow distribution plates, and the air outlet holes are communicated with the air outlet. According to the hair curler, the airflow distribution plate is arranged, axial airflow is divided into laminar flow, the airflow can be blown out of the air outlet, the airflow blown out of the air blowing opening is more uniform, and the hair curling effect is improved.

The invention relates to a polyester hollow textured yarn and a production method thereof, and the production method comprises the following steps: firstly, preparing polyester hollow filaments through a melt spinning method; secondly, the polyester hollow filaments are subjected to secondary processing on a BCF spinning device, specifically, the polyester hollow filaments are sequentially subjected to oil treatment, first pre-network treatment, first hot drafting, deformation treatment, cooling shaping, yarn dividing treatment, first main network treatment and winding forming, and the polyester hollow textured yarn is obtained. The BCF spinning device is adopted to conduct secondary processing on the polyester hollow filaments, the filaments are expanded and deformed instantly under the preset high-temperature and high-pressure environment, the filaments are cooled and shaped through the negative pressure technology, natural curling is generated in the process, on the basis that the high hollowness characteristic is kept, the rebound resilience of the fiber is enhanced, and the fiber has the good elasticity. Therefore, the overall performance and the application value of the product are improved.

The utility model discloses a self-exhausting shading double-sided adhesive tape, which comprises a first adhesive layer, a second adhesive layer, a third adhesive layer and a fourth adhesive layer, the second adhesive layer is arranged on the first surface; the shading layer is clamped between the first adhesive layer and the second adhesive layer; the anti-warping base layer is clamped between the shading layer and the second adhesive layer; the second surface of the first adhesive layer is provided with an exhaust channel. The self-exhausting shading double-sided adhesive tape is reasonable in structure, the warping problem of a thin adhesive tape is effectively solved while light weight is ensured through the arrangement of the anti-warping base layer, and the adhesive force and retention force of the adhesive tape are improved by combining with the exhaust channel formed in the second surface, so that adhesion is tighter, bubbles are reduced, and the warping problem is solved.

The utility model relates to the technical field of hairdressing equipment, in particular to a rotary adjustable hair curling rod which comprises a shell, a hair curling assembly, a rotary shifting piece and an upper limiting block. The gear set of the rotary base is meshed with the driven gear, and the second gear teeth of the rotary shifting piece are meshed with the gear set, so that accurate rotation control over the curling iron is achieved, the curling angle and the curling direction can be adjusted more flexibly and stably, the curling effect and the user experience are improved, and the practicability is high. The heating piece is guided through the first moving guide rail and the second moving guide rail, the stability and accuracy of the heating piece in the hair curling process are guaranteed, the problems that a traditional hair curling rod is uneven in heating and unsmooth in hair curling are solved, the hair curling quality is effectively improved, and the upper limiting block and the top cover improve the structural stability of the hair curling rod and improve the hair curling efficiency. And in addition, the use safety is improved, the heating piece is prevented from accidentally falling off or shifting, and safer and more reliable use experience is provided for a user.

The cup sector and cup provided by the application can solve the problem of curling defects caused by stress concentration of curled edge material of the edge sealing part during the forming of the disposable cup under the requirement of high curling degree. The cup sector comprises a sector ring part, a curled edge part and an edge sealing part. The sector ring part has an upper arc edge, a lower arc edge arranged concentrically with the upper arc edge, a left edge extending radially from a left end of the lower arc edge to the upper arc edge, and a right edge extending radially from a right end of the lower arc edge to the upper arc edge. The curled edge part extends circumferentially along the upper arc edge of the sector ring part. The edge sealing part extends radially along the left edge or the right edge of the sector ring part to the curled edge part. The edge sealing part is provided with a notch adjacent to the curled edge part. The notch extends taperingly from a side of the edge sealing part away from the curled edge part to a direction close to the curled edge part.

The utility model relates to the technical field of curtain hemming machines, and discloses a hemming machine for curtain production, which comprises a platform and two hemming machines, support columns are fixedly mounted at four corners of the bottom of the platform, mounting plates are fixedly mounted on the left and right sides of the platform, an electric telescopic rod is arranged outside the mounting plate on the left side, and the two hemming machines are fixedly mounted on the platform. A cutter is arranged at the output end of an electric telescopic rod, an adjusting mechanism is arranged in the platform, a winding mechanism is arranged outside the platform, a curtain fabric with folded curled edges penetrates through two rollers, a pressing plate is loosened, so that a spring rebounds to drive a sliding block B to move, the two rollers get close to fix the curtain fabric, and the curtain fabric is wound through the winding mechanism. The curled edge of the folded curtain fabric is flattened before edge curling, edge curling of the hemming machine is facilitated, the movable block drives the connecting rod to move, the connecting rod drives the sliding block A to slide in the fixed block, the position of the hemming machine is changed, and sewing and edge curling of the hemming machine are facilitated.

This utility model discloses a rigid reflector and a direct-lit backlight module. The rigid reflector includes: a reflector formed by injection molding; the reflector includes a reflector body and multiple reflective cups, which are arranged in a matrix on the reflector body; the end face of the reflector body facing away from the multiple reflective cups is a planar structure, and a fixing structure for fixing a back plate is provided on the periphery of the reflector body. The direct-lit backlight module includes: a back plate, a lamp plate, optical elements, and the aforementioned rigid reflector. The lamp plate includes a substrate and multiple LEDs, which are arranged in a matrix on the substrate. The back plate, substrate, reflector, and optical elements are stacked sequentially, and the LEDs are located at the opening of the reflector; the planar structure is fixedly connected to the substrate, and the inner sidewall of the back plate is fixedly connected to the fixing structure. This utility model can improve the problem of reflector warping during assembly and has the characteristics of efficient assembly, making the direct-lit backlight module have the characteristics of high assembly efficiency and good optical effect.

The utility model discloses a portable hair dryer, including hair dryer main part, the hair dryer main part left and right both ends wall all are provided with positive pole magnetic attraction groove, the hair dryer main part left and right both ends are connected with dustproof structure and hair curling structure respectively, the fixed frame is fixedly installed with negative pole magnetic attraction fixed ring, the negative pole magnetic attraction fixed ring left and right both ends respectively adsorbed with first metal dustproof board and second metal dustproof board, the negative pole magnetic attraction fixed ring left and right both ends all are provided with auxiliary groove, first metal dustproof board and second metal dustproof board inboard all are fixedly connected with metal auxiliary ring, the fixed frame right side fixedly connected with first negative pole magnetic attraction connecting ring. The portable hair dryer, through dustproof structure, the dustproof effect of hair dryer air inlet is improved conveniently, and dustproof board is convenient to detach, thereby being convenient to the overall cleaning of dustproof board, through hair curling structure, it is convenient to carry out hair curling operation, thereby improving its functionality.

This invention discloses an environmentally friendly furniture decorative film, comprising a scratch-resistant composite outer layer, an adhesive layer, and a toughening composite inner layer stacked sequentially. The scratch-resistant composite outer layer, from the outside in, includes a protective surface layer, a buffer layer, and a filler layer stacked sequentially. The toughening composite inner layer, from the outside in, includes a protective inner layer and a toughening layer stacked sequentially. The filler layer and the toughening layer are connected to the adhesive layer. The filler layer includes PETG and a first compatibilizer. The toughening layer includes random copolymer polypropylene, a toughening agent, and a second compatibilizer. The first compatibilizer is a hydroxyl-terminated hyperbranched polyester; the second compatibilizer is isocyanate-functionalized polypropylene. By weight, the adhesive layer's adhesive solution includes 100 parts of hydroxyl polyester polyol, 8-12 parts of isocyanate crosslinking agent, and 55-70 parts of solvent. By optimizing the compatibility and chemical crosslinking between the layer raw materials, the stability, bonding strength, toughness, and environmental friendliness of the furniture film's layer structure are improved.

The present invention relates to the technical field of turning tools, and discloses an indexable turning blade with an integrated design for roughing and finishing, the blade comprising an upper surface, a lower surface and a plurality of vertex angles, arc cutting edges being provided at the vertex angles, a roughing cutting edge and a finishing cutting edge being connected to the two ends of the arc cutting edge, respectively, a roughing chip groove being provided between the roughing cutting edge and the upper surface of the blade, a finishing chip groove being provided between the finishing cutting edge and the upper surface of the blade, a chip breaker being provided between the roughing chip groove and the finishing chip groove, the chip breaker being provided between the arc cutting edge and the upper surface, the roughing cutting edge and the finishing cutting edge coexisting between adjacent vertex angles, and the roughing cutting edge and the finishing cutting edge being connected via a transition surface. The present application creatively integrates the cutting edges for roughing and finishing on one blade, and one tool can be used to complete all turning processes when machining parts, and there is no need to change tools during machining, which is convenient to use and can effectively improve machining efficiency. In addition, there is no need to separately manufacture roughing tools and finishing tools, and the tool cost is significantly reduced.

The present invention relates to the technical field of electrophysiological catheters, and in particular to a mapping catheter, comprising a mapping head end, the mapping head end comprising a support sheet and an electrode membrane, the support sheet being a flexible and elastic member, the support sheet being a hollow design, the two ends of a plurality of support arms formed by the hollowing out respectively intersecting at one place, the electrode membrane being provided with a plurality of electrode sheets and electric traces, a plurality of the electrode sheets being arranged along the support arms, the electric traces being arranged along the positions of the support arms, the width of the support arms being greater than the thickness of the support arms, the electrode membrane being arranged on both sides of the support sheet, the electrode membrane comprising, from the inside to the outside, an insulating layer, a conductive layer and a protective layer, a plurality of the electrode sheets and the electric traces being arranged on the electrode membrane through the conductive layer, and the width of the electrode sheets and the width of the electric trace bundle being less than the width of the support arms. Through this arrangement, the complexity of the electric trace wiring is reduced, making the use of the mapping head end more convenient.

The utility model relates to the technical field of ground mats, in particular to an integrated rolling mat which comprises a base layer and a surface layer, the base layer and the surface layer are processed into a whole through a heat sealing process, a plurality of strip-shaped grooves are formed in the base layer in the short edge direction of the base layer, and the strip-shaped grooves are evenly arranged at intervals. The base layer and the surface layer are respectively provided with a first bonding part and a second bonding part which are bonded with each other. Compared with the prior art, the floor mat has the advantages that the strip-shaped groove is formed in the base layer, the rolling difficulty of the floor mat can be reduced, rolling is convenient, the base layer and the surface layer are arranged in a staggered mode, the first bonding part and the second bonding part are arranged in a matched mode, two adjacent floor mats are in lap joint and bonded into a whole, a seam gap is reduced, and the service life of the floor mat is prolonged. According to the integrated rolling mat, the flatness of the whole field is achieved, gap expansion caused by deviation of the ground mat in the using process is also avoided, connection is reliable, splicing is convenient and fast, the integrated rolling mat can be laid in different sizes and different thicknesses according to needs, and the requirements of users are met.

The utility model relates to the field of firework production, in particular to a hemming and bottom sealing device for a firework outer cylinder. The technical problems that according to a traditional device, edge curling is not convenient to conduct on paper tubes from multiple angles at the same time, the edge curling effect is poor, material returning is not convenient to conduct on the edge-curled paper tubes, and workers are not convenient to take away the edge-curled paper tubes are solved. A hemming and bottom sealing device of a firework outer cylinder comprises a bottom frame, a rubber column is fixedly connected to the upper portion of the bottom frame, a limiting frame is connected to the upper portion of the bottom frame in a sliding mode, the limiting frame is connected with the rubber column in a sliding mode, and a paper cylinder is inserted into the rubber column. The extrusion ring makes contact with the contact frame, the extrusion ring can extrude the contact frame, the contact frame can extrude the lower edge of the paper tube, the lower edge of the paper tube is shrunk, the edge pushing frame continues to move upwards to push the shrunk lower edge of the paper tube upwards into the paper tube, edge curling can be conveniently conducted on the paper tube from multiple angles at the same time, and the edge curling effect is better.

The utility model discloses a heating radiator production hemming device which comprises a control seat, the control seat is used for supporting and positioning the heating radiator production hemming device, hemming angle adjusting mechanisms are fixedly arranged at the two ends of one side of the control seat, and hemming force adjusting mechanisms are fixedly arranged on one sides of the two hemming angle adjusting mechanisms. The hemming angle adjusting mechanism comprises a positioning frame, a positioning groove is formed in the middle of the positioning frame, a moving block is slidably arranged at one end of the inner wall of the positioning groove, and a positioning gear is rotatably arranged on one side of the moving block. The tooth surface of the positioning gear is meshed with the tooth surface of the positioning gear ring, so that the moving block slides along the positioning grooves formed in the positioning frames, hemming of the heating radiator can be adjusted and controlled, hemming at different angles is facilitated, progressive hemming of the heating radiator can be achieved through positioning hemming of the two positioning frames, and the machining efficiency of the heating radiator is improved. And the hemming amplitude effect is improved.

The utility model provides a telescopic curling iron which comprises a handle and a first pipe body, the first pipe body is fixed at one end of the handle, the telescopic curling iron further comprises a second pipe body, and the second pipe body can retract and extend out of the first pipe body in the extending direction of the first pipe body. An elastic piece is arranged in the first pipe body, the first end of the elastic piece is fixed in the first pipe body, and the second end of the elastic piece is fixed in the second pipe body; and heating bodies are arranged in the first pipe body and the second pipe body. The telescopic curling iron is convenient to carry, long in service life and capable of achieving multiple curling effects at the same time.

The invention discloses a preparation method of soft ultrahigh-elasticity FDY (fully drawn yarn) fibers with improved air permeability, which comprises the following steps: S1, respectively slicing PET (polyethylene terephthalate), polyamide and PTT (polytrimethylene terephthalate), then melting the PET, the polyamide and a complexing agent in a mass ratio of 1: 1: (0.05-0.1), extruding through a first spinneret plate, directly melting the PTT, and extruding through a second spinneret plate; the complexing agent is prepared from n-octyl phthalate, silicone oil and a carbon nanotube; the first spinneret plate is provided with gourd-shaped spinneret orifices, and the second spinneret plate is provided with hollow spinneret orifices; and S2, carrying out FDY process and relaxation heat treatment in sequence to obtain the FDY fiber. According to the invention, three polymers of PET, polyamide and PTT are subjected to composite spinning, and the difference of thermal shrinkage performance of two components is utilized in parallel composite spinning, so that the fiber can generate durable, stable and elastic curl, and the improvement of the fiber performance can be facilitated: the loose degree, strength, elasticity and other performance of the fiber can be improved.

The present invention relates to a polyester hollow deformed yarn and a production method thereof, and the production method comprises the following steps: first, preparing polyester hollow filaments by melt spinning; second, subjecting the polyester hollow filaments to secondary processing on a BCF spinning device, specifically: subjecting the polyester hollow filaments to oil treatment, first pre-network treatment, first hot drawing, deformation treatment, cooling and shaping, filament separation treatment, first main network treatment, winding and forming, and obtaining polyester hollow deformed yarns. The present application adopts a BCF spinning device to perform secondary processing on polyester hollow filaments, causing the filaments to be instantly puffed and deformed under a preset high temperature and high pressure environment, and adopts a negative pressure process to cool and shape the filaments, and this process produces natural curling, which enhances the resilience of the fiber while maintaining the high hollow characteristics, thereby improving the overall performance and application value of the product.

The invention provides kaolin with excellent coagulation performance, a preparation method thereof and a hemostatic material, and relates to the field of materials. The preparation method of the kaolin with excellent coagulation performance comprises the following steps: crushing kaolin raw ore, and then mixing with water to obtain kaolin coarse mortar; performing first mixing on the kaolin coarse mortar, sodium hydroxide and sodium hexametaphosphate, and performing staged treatment and impurity removal by adopting a spiral desanding and multi-stage cyclone to obtain kaolin fine ore pulp; the kaolin fine ore pulp and sodium hexametaphosphate are mixed for the second time, then magnetic separation impurity removal and wet grinding and stripping treatment are carried out, and kaolin superfine ore pulp is obtained; carrying out dehydration treatment on the kaolin superfine ore pulp, and drying to obtain purified kaolin; and calcining the purified kaolin to obtain the target kaolin. The kaolin prepared by the method provided by the invention has a good activating effect on platelets and excellent coagulation performance.

The utility model discloses a wind-guiding hair curling assembly and a wind comb with the wind-guiding hair curling assembly, the wind-guiding hair curling assembly comprises a hollow framework, arc-shaped blades and a head cover, the hollow framework comprises a base part and a hollow frame part, and the base part is provided with a through ventilation hole communicated with the inside of the hollow frame part; the multiple arc-shaped blades are arranged around the hollowed-out frame part, an air guide cavity is formed between the arc-shaped blades and the hollowed-out frame part, exhaust outlets are formed in the side portions of the arc-shaped blades, arc-shaped air guide faces are arranged on the portions, located on the outer sides of the exhaust outlets, of the arc-shaped blades, and air entering the air guide cavity from the hollowed-out frame part is exhausted through the exhaust outlets. The blades rotate around the peripheries of the arc-shaped blades under the action of the arc-shaped air guide surfaces; the two ends and the lower ends of the arc-shaped blades are clamped with the hollow framework, and the upper ends of the arc-shaped blades are clamped with the head cover; the air guide hair curling assembly is used in cooperation with the air comb main machine, the automatic hair curling effect is achieved, the structure is simple, heat generated by the heating element is blown to the hair, and the heat generated by the heating element can be fully utilized.

The present invention relates to a method for preparing a crimped composite fiber and a crimped composite fiber obtained thereby, the method comprising the steps of: a) providing a composite fiber comprising a first component and a second component crimped side by side; b) subjecting the composite fiber in step a) to supercritical fluid infiltration; c) foaming and crimping the composite fiber subjected to supercritical fluid infiltration in step b); d) setting the composite fiber foamed and crimped in step c). The crimped composite fiber has improved fiber crimp shrinkage and warmth retention properties.

Disclosed in the present invention are a freely cropped warp-knitted fabric and use thereof. The warp-knitted fabric is formed by knitting at least a front comb yarn and a rear comb yarn. The front comb yarn and / or the rear comb yarn are a crimped synthetic fiber having a telescopic elongation of 30-120% and a telescopic recovery rate of 15% or more, and an extension line of a coil formed by the front comb yarn and an extension line of a coil formed by the rear comb yarn are opposite in the same direction. The warp-knitted fabric provided by the present invention has the proper extensibility and flexibility, is good in washing durability, does not scatter the edges of the fabric after cropping, is not prone to transverse curling, is good in wearing comfort, and can be widely used for manufacturing various clothes.

The invention discloses a one-step method fine-denier hollow high-elastic high-crimp fiber and a manufacturing method thereof. The manufacturing method of the one-step method fine-denier hollow high-elastic high-crimp fiber comprises the following steps that a PET melt and a PBT melt are subjected to parallel composite extrusion molding through a spinneret plate; the spinneret plate is provided with a plurality of spinneret orifices, and each spinneret orifice comprises a long arc runner and a short arc runner which are asymmetrically arranged; the PET melt is extruded through the long arc runner, and the PBT melt is extruded through the short arc runner; all the short arc runners face the same direction; cooling and blowing on one side of the spinneret plate; the orientation configuration of the short arc flow channel is that cooling air is blown to one side of the short arc flow channel; oiling the extruded, cooled and molded tows; and carrying out high-speed stretching spinning on the oiled tows to obtain the fine-denier hollow high-elastic high-crimp fiber. According to the one-step fine-denier hollow high-elastic high-crimp fiber and the manufacturing method thereof, the manufactured fine-denier hollow fiber is good in elasticity and high in crimp contractility and is manufactured through the one-step method, and the post-processing and finishing process is reduced.

The invention relates to an LED curled carpet screen display unit. The LED curled carpet screen display unit comprises an LED lamp panel and a strip-shaped profile assembly. The LED lamp panel is arranged on one face of the strip-shaped profile assembly and connected with the strip-shaped profile assembly. The two sides of the strip-shaped profile assembly are each provided with a stepped installation structure. A plurality of lamp panel screw holes and a plurality of longitudinal connecting screw holes are formed in the stepped mounting structure; the longitudinal connecting assembly used for connecting the two adjacent LED curled carpet screen display units can be arranged in the LED lamp panel or at the position of the stepped installation structure and located in the middle of the thickness of the LED curled carpet screen display units so that the curled angle of the two adjacent display units can be increased. According to the LED curled carpet screen, the display units are connected through the longitudinal connecting assemblies and curled through the transverse cloth tape, power sources and signal wires are arranged on the two sides, series connection of the display units is facilitated, the thickness is small, the curling angle is small, curling is convenient, and gaps between the adjacent display units are small after the display units are unfolded.

This utility model discloses an adjustable-angle curling iron, including a curling iron body, an angle adjustment component fixedly connected to the bottom end of the curling iron body, and an anti-drop component fixedly connected to the side wall of the angle adjustment component; the angle adjustment component includes a fixing frame and a round tube, the fixing frame is fixedly connected to the bottom end of the curling iron body, and the round tube is fixedly connected to one side of the fixing frame. This utility model relates to the field of curling iron technology; this adjustable-angle curling iron, through the set angle adjustment component, can adjust the angle, and the adjustment is simple and convenient, allowing users to flexibly change the angle of the curling iron according to their own curling habits and the needs of creating different hairstyles. Whether creating inward curls, outward curls, big waves, small curls, or other styles, the most suitable angle can be accurately found, thereby more efficiently creating the ideal curling effect, and also greatly improving the comfort of the curling process.

The application discloses a sawtooth optimization method based on t-distribution cumulative distribution and a disc saw preparation method. The disc saw preparation method is innovative in constructing a sawtooth profile by using a Student-T distribution CDF curve in view of the problems of stress concentration, loud noise and short service life of a traditional sawtooth, and controls tooth profile curvature through a degree of freedom v parameter to realize continuous and smooth transition from a tooth root to a tooth top. The method comprises the following steps: design parameter input, single-tooth reference profile generation, single-tooth profile discretization and coordinate conversion, tooth back and chip space construction, circular array replication, three-dimensional model generation and verification and manufacturing data output, and a tooth profile suitable for different requirements is obtained by adjusting the v value, and an optimal profile disc saw is output, so that the cutting noise of the disc saw is reduced, the tool life is prolonged, and the machining quality and efficiency are significantly improved.

The present invention discloses a manufacturing device for a two-component spunbond nonwoven fabric, comprising a hot melt extrusion device, a spinning device, a monomer suction device, a side-blowing cold air device, an airflow drafting device, a swing wire laying device, a web forming device and a slitting and winding device which are sequentially connected from top to bottom, wherein: the airflow drafting device is sequentially provided with an upper air inlet, a lower air inlet and a filament diffuser from top to bottom; the present invention also discloses a manufacturing method for a two-component spunbond nonwoven fabric, and the two-component spunbond nonwoven fabric produced by the manufacturing device and the manufacturing method of the present invention is soft and fluffy.

The utility model discloses a network cable relates to cable technical field, including the wiring harness that is located in the cable body, the cable body still includes the first protective sheath, be provided with the reinforcing sleeve in the first protective sheath, be provided with the reinforcing wire between the first protective sheath and the reinforcing sleeve, be provided with the wiring harness in the reinforcing sleeve, the wiring harness is provided with several, the first filling protruding of reinforcing sleeve inner wall is provided with, the first filling protruding at least partial embedding in the first space formed between adjacent wiring harness, and the first protective sheath improves the protection effect of cable, makes cable have durable, not easy to lose the effect, and the reinforcing sleeve and reinforcing wire improve the tensile resistance, the characteristics of the tensile resistance of cable, and several wiring harnesses improve the signal transmission efficiency of cable, and the first space does not make cable inside too full, so that cable rigid, therefore the first space makes cable convenient to curl, bend, and easily change the laying path.