34results about How to "Smooth silk" patented technology

The invention discloses a method for processing high-performance modified polyethylene monofilaments for manufacturing a fishing net, relates to a method for processing polyethylene monofilaments for manufacturing a fishing net and aims to provide a method for processing the high-performance modified polyethylene monofilaments for manufacturing the fishing net. In the technical scheme of the invention, a stirring machine, a single-screw extruder, a twice-drafting electrical heating drafting machine, a filament winding machine and a filament separating machine are adopted. The method is characterized by comprising the following steps of: mixing a sieved spinning-grade dry HDPE resin, a dry VERSIFYTM 6002 elastomer, white oil or a turpentine aid; uniformly mixing the materials to obtain an HDPE / VERSIFYTM 6002 elastomer blend and fusing and extruding the blend by using the single-screw extruder; cooling and pre-drafting fused and extruded primary filaments, thermally drafting the pre-drafted filaments twice, rapidly cooling the thermally-drafted filaments from which oil is removed with high-pressure air current and winding modified PE monofilaments by using the winding machine; and separating the modified PE monofilaments into the high-performance modified polyethylene monofilaments for manufacturing the fishing net by using the filament separating machine.

The invention discloses a biodegradable hard tissue repair composite scaffold prepared by 3D printing technology and a preparation method thereof, belonging to the field of biomedical materials. The composite scaffold combines degradable high molecular polymer and biologically active calcium phosphate together through a wet composite method, complements each other in advantages, and obtains a hardtissue repair scaffold material with excellent mechanical properties and biologically active through a 3D printing technology of melt extrusion (FDM). Silane coupling agent was used to modify the surface of calcium phosphate nano-powder, which enhanced the combination of calcium phosphate and polymer, and improved the fluidity and integrity of outgoing wire in the preparation of FDM standard wire.

The invention discloses radiation protection double-layer chiffon silk fabric which is double-layer double-face weave yarn-dyed fabric. A mulberry silk plain weave structure is arranged on the surface layer, and a mulberry silk and silver fiber pilotaxitic texture is arranged on the inner layer. The warp density of the inner layer is larger than or equal to 20 / cm, the weft density of the inner layer is larger than or equal to 20 / cm, the warp density of silver fibers is 20-25 / m, and the weft warp density of the silver fibers is 38-45 / m. The surface layer and the inner layer are connected through binding places. The radiation protection double-layer chiffon silk fabric has good radiation protection performance, meanwhile, the problem that existing anti-electromagnetic radiation fabric is poor in appearance is solved, and the new process of weaving real silk and silver fiber interweaving products is created.

The invention discloses a 3D (three-dimensional) printer silk material conveying mechanism. The 3D printer silk material conveying mechanism is characterized in that a silk material used for providingsilk to a nozzle is placed in a silk material box, the silk material is conveyed to the nozzle through a power system, and the power system comprises a silk material pushing device close to one end of the silk material box, a silk material pulling device close to one end of the nozzle and a silk material buffer device arranged between the silk material pushing device and the silk material pullingdevice. A silk feeding method includes that the silk material pushing device stops running after pushing a segment of the silk material to the silk material buffer device, the silk material pulling device continuously runs and pulls the silk material, and when the silk material in the silk material buffer device is tightened, the silk material pushing device continuously pushes the segment of thesilk material to the silk material buffer device. According to the 3D printer silk material conveying mechanism, the silk material buffer device is arranged between the silk material pushing device and the silk material pulling device, the silk material pushing device discontinuously provides pushing force, the silk material pulling device continuously provides pulling force, the silk material pushing device and the silk material pulling device can continuously output silk without need for synchronously moving, and printing quality is improved.

The invention discloses a preparation method for a wire extruding mechanism with double spray heads. The preparation method comprises the following steps: (1) preparing a fixed seat; (2) preparing a first heat radiating aluminum part and a second heat radiating aluminum part; (3) preparing a first heating aluminum block and a second heating aluminum block; (4) preparing a first nozzle and a second nozzle; (5) preparing a cooling fan; (6) arranging air guide channels; and (7) assembling all the prepared parts to prepare the wire extruding mechanism with double spray heads. The invention also discloses a preparation device adopting the method. The preparation method has the beneficial effects that the design of the double spray heads and double air channels is adopted. By using the two spray heads, consumables which have different colors or are made of different materials are stacked to form a required object, and each air channel is cooled to radiate heat, so that a wire is more smoothly extruded, and the surface of the object is more smooth. Double-color printing can be realized. The power is relatively high when a complex model is printed. Due to the adoption of an independent cooling mechanism, the wire is stable in performance and higher in surface quality and is smoothly extruded. Each of the cooling mechanism and the wire extruding mechanism forms an independent body so as to be conveniently maintained and cleared.

The invention provides a flame-retardant composite material for 3D printing, which comprises the following raw materials in parts by weight: 60-95 parts of nylon resin, 5-40 parts of ABS (acrylonitrile-butadiene-styrene) resin, 0.3-2 parts of lubricant, 5-20 parts of compatilizer, 0.2-1 part of antioxidant and 5-30 parts of amorphous red phosphorus. The flame-retardant composite material for 3D printing is free of halogen, and can not pollute the environment in the material combustion and use process; and under the interactions among the amorphous red phosphorus, ABS resin and other raw materials, the flame retardancy and toughness of the material are enhanced. The added lubricant lowers the friction factor of the composite material, improves the free mobility of the composite material, avoids the material decomposition caused by local overheating and enhances the appearance quality and surface smoothness of the product. When the flame-retardant composite material for 3D printing is used for 3D printing, the wire sprayed by the sprayer is smooth, and the printed product has high precision and favorable surface quality.

The invention discloses a multi-spray head 3D printing method which comprises the following steps: (1) drawing a 3D model; (2) slicing the model: importing a 3D model document into slicing software, wherein the slicing software slices the 3D model document in layers according to printing parameters, inputs the printing parameters of a cleaning mechanism, and generates layered slices of the cleaning structure according to the 3D model document; and (3) printing in turn: printing the cleaning structure and the 3D model by using a first spray head and a second spray head in turn. The multi-sprayhead 3D printing method is suitable for a multi-spray head printer which employs two silk materials of different types or silk materials of same type but different colors. As the cleaning mechanism isprinted by the printing spray heads before the 3D model is printed, residual silk materials on the printing spray heads are blocked by the cleaning mechanism, so that the printing spray heads are cleaned. In the process of printing the cleaning mechanism, the printing spray heads are heated continuously to feed silk, so that the printing spray heads feed the silk smoothly as the 3D model is printed after the printing spray heads feed the silk stably, and therefore, the printing quality is improved.

The invention discloses a copolymerization toughening modified material for 3D printing PLA (polylactic acid) and a preparation method of the copolymerization toughening modified material. The material is prepared from the following components in parts by weight: 60 to 90 parts of polylactic acid, 10 to 40 parts of thermoplastic polyurethane elastomer, 0.5 to 5 parts of epoxy polymer, 0.1 to 0.5 part of diglycidyl ether derivative, 0.2 to 1 part of lubricant, 0.2 to 1 part of heat stabilizer and 1 to 10 parts of inorganic filler, the preparation method comprises the following steps: drying the components, uniformly mixing, and carrying out melt co-extrusion by using a double-screw extruder. According to the method, the problems of thermodynamic incompatibility and phase separation in the blending extrusion process of PLA and TPU are solved, the toughening effect has long-acting stability, and when the method is applied to 3D printing, wire output is smooth, and the wire drawing effect is good.

The invention discloses a preparation method for a wire extruding mechanism with double spray heads. The preparation method comprises the following steps: (1) preparing a fixed seat; (2) preparing a first heat radiating aluminum part and a second heat radiating aluminum part; (3) preparing a first heating aluminum block and a second heating aluminum block; (4) preparing a first nozzle and a second nozzle; (5) preparing a cooling fan; (6) arranging air guide channels; and (7) assembling all the prepared parts to prepare the wire extruding mechanism with double spray heads. The invention also discloses a preparation device adopting the method. The preparation method has the beneficial effects that the design of the double spray heads and double air channels is adopted. By using the two spray heads, consumables which have different colors or are made of different materials are stacked to form a required object, and each air channel is cooled to radiate heat, so that a wire is more smoothly extruded, and the surface of the object is more smooth. Double-color printing can be realized. The power is relatively high when a complex model is printed. Due to the adoption of an independent cooling mechanism, the wire is stable in performance and higher in surface quality and is smoothly extruded. Each of the cooling mechanism and the wire extruding mechanism forms an independent body so as to be conveniently maintained and cleared.

The invention provides a 3D printer head of wax material, and overcomes the defect that in the prior art, wax material cannot be extruded out smoothly. The 3D printer head comprises an extrusion part, a ventilation part, a heating part and a wire outlet part, wherein the wire outlet part comprises a fixed seat and a line bank; the line bank is fixed at the rear end of the fixed seat; the extrusion part, the ventilation part and the heating part are both mounted on the fixed seat. The 3D printer head adopts a 57 stepper motor, so as to increase the motor torsion and ensure that the thrust of the extrusion part is large enough to extrude out a wax material line with the diameter of 3 mm; a leaf spring is arranged to be used for pressing the wax material and provide enough pressure to ensure that the wax material can be extruded out smoothly; a driving roller made of rubber material replaces a copper gear, so that the wax material is protected from wearing and the copper gear is prevented from scratching the wax material during driving; the aperture of a spray nozzle is 0.8 / 1.0 / 1.2 mm, so that the wax material is prevented from excessive melting at the heating part and more smooth line outlet is ensured.

The invention provides a multi-station automatic-adjustment wheel type gel spinning machine. The multi-station automatic-adjustment wheel type gel spinning machine comprises a spinning box, a power mechanism and a control system, wherein the power system supplies power to the spinning box; two same stations are arranged in the spinning box; the control system selects the station needing to work by controlling connection and disconnection of an electromagnetic clutch; and the control system is connected with the power mechanism and the heating mechanism to realize self-adaptive adjustment of the rotating speeds of a driving rubber roll and a driven rubber roll with the gelation temperature. The multi-station automatic-adjustment wheel type gel spinning machine provided by the invention has the advantages that by controlling the self-adaptive adjustment of the rotating speeds of the rubber rolls and the gelation temperature, spun yarns can reach the nano level; and by adjustment to the gap between the driving rubber roll and the driven rubber roll, uniform silk production and difficult silk breaking are realized; and the two stations can work simultaneously, so that the working efficiency is effectively improved.

The invention discloses an intelligent nozzle of a 3D (Three-Dimensional) printer. The intelligent nozzle of the 3D printer comprises a fixed bracket, a cover plate, a concave bracket, a heat conduction block and a material guide pipe, wherein the cover plate is mounted at the top of the fixed bracket; the concave bracket is mounted at the bottom of the fixed bracket; the heat conduction block is mounted at the bottom of the concave bracket; an extrusion head is arranged at the front end of the material guide pipe; the material guide pipe is vertically arranged in the fixed bracket; the extrusion head is exposed out of the bottom of the heat conduction block; the intelligent nozzle of the 3D printer also comprises at least one heating part and at least one temperature sensing part; the heating part and the temperature sensing part are mounted in the heat conduction block. The extrusion head of the intelligent nozzle comprises the heating part and the temperature sensing part and is capable of accurately controlling the thread extrusion temperature, guaranteeing the smooth thread extrusion and automatically cleaning the nozzle; all circuit lines are fixed in the nozzle, so that the problem that the circuit lines are abraded, broken and cut out in the process of moving the extrusion head is avoided.

The invention discloses a novel multi-component spinning spinneret plate. The spinneret plate comprises a spinneret plate body; the spinneret plate body comprises a feeding plate and a discharging plate; a plurality of spinneret holes are formed in the discharging plate; connecting plates are arranged in the spinneret holes; one end of each connecting plate is connected with an annular baffle; an arc-shaped baffle is arranged in each annular baffle; a feeding port is formed in the end, close to the feeding plate, of each spinneret hole; a first deceleration cavity is formed in each spinneret hole; a buffer cavity is formed below each first deceleration cavity; and a second deceleration cavity is formed below each buffer cavity. The spinneret plate has the advantages that the spinneret holes are arranged in a staggered manner, so that output filaments of all the spinneret holes can be subjected to excellent solidification; a supported fiber cross section structure can be formed to enhance the overall use characteristics of fibers and prolong the service life of the fibers; and the plurality of deceleration cavities are arranged in the spinneret holes to promote stable flow of melts, ensure uniform output filaments and improve the fiber production quality.

The invention provides a multi-station automatic-adjustment wheel type gel spinning machine. The multi-station automatic-adjustment wheel type gel spinning machine comprises a spinning box, a power mechanism and a control system, wherein the power system supplies power to the spinning box; two same stations are arranged in the spinning box; the control system selects the station needing to work by controlling connection and disconnection of an electromagnetic clutch; and the control system is connected with the power mechanism and the heating mechanism to realize self-adaptive adjustment of the rotating speeds of a driving rubber roll and a driven rubber roll with the gelation temperature. The multi-station automatic-adjustment wheel type gel spinning machine provided by the invention has the advantages that by controlling the self-adaptive adjustment of the rotating speeds of the rubber rolls and the gelation temperature, spun yarns can reach the nano level; and by adjustment to the gap between the driving rubber roll and the driven rubber roll, uniform silk production and difficult silk breaking are realized; and the two stations can work simultaneously, so that the working efficiency is effectively improved.

The present invention discloses a method for processing high-performance modified polyethylene monofilaments for manufacturing a fishing net, relates to a method for processing polyethylene monofilaments for manufacturing a fishing net and aims to provide a method for processing the high-performance modified polyethylene monofilaments for manufacturing the fishing net. In the technical scheme of the invention, a stirring machine, a single-screw extruder, a twice-drafting electrical heating drafting machine, a filament winding machine and a filament separating machine are adopted. The method is characterized by comprising the following steps of: mixing a sieved spinning-grade dry HDPE resin, a dry VERSIFYTM 6002 elastomer, white oil or a turpentine aid; uniformly mixing the materials to obtain an HDPE / VERSIFYTM 6002 elastomer blend and fusing and extruding the blend by using the single-screw extruder; cooling and pre-drafting fused and extruded primary filaments, thermally drafting the pre-drafted filaments twice, rapidly cooling the thermally-drafted filaments from which oil is removed with high-pressure air current and winding modified PE monofilaments by using the winding machine; and separating the modified PE monofilaments into the high-performance modified polyethylene monofilaments for manufacturing the fishing net by using the filament separating machine.

The invention discloses a 3D printing clay extruding device. The 3D printing clay extruding device comprises a supporting base. A needle cylinder penetrates through the middle of the supporting base. A clay material is contained in the needle cylinder. A cylinder body of the needle cylinder is fixed to the supporting base. A piston moving vertically is arranged in the needle cylinder. A piston neck is fixed to the upper portion of the piston and connected with a synchronous belt. The synchronous belt extrudes the piston neck through an extruding linkage mechanism so that the piston can move downwards. The 3D printing clay extruding device is simple in structure, materials can be replaced, clay wires are output smoothly, and printing forming is stable.

The invention relates to a processing system and a processing method for ultra-fine grinding filaments, comprising: a treatment liquid preparation device, a master batch preparation device, a melt spinning device, an image recognition device and a controller, and the treatment liquid preparation device is used for preparing treatment The master batch preparation device is used for processing the master batch; the melt spinning device is used to receive the master batch prepared by the master batch preparation device, and perform melt extrusion to obtain ultra-fine grinding filaments; the image recognition equipment is set At the outlet of the melt spinning device, it is used for image recognition of the ultra-fine grinding filaments, and the image of the device is transmitted to the controller, and the controller performs digital twin processing after receiving the image. , determine the processing effect of the ultra-fine grinding wire, and generate an adjustment signal according to the processing effect, and control the treatment liquid preparation device, the master batch preparation device, and the melt spinning device. The invention can improve the processing and production efficiency of the ultra-fine grinding wire, and can perform processing adjustment in time.