8results about How to "Reduce waste silk" patented technology

The invention relates to the technical field of large-tow carbon fiber production, in particular to a large-tow carbon fiber and a continuous production method of the large-tow carbon fiber, and discloses a large-tow fiber, the large-tow carbon fiber comprises large-tow precursors and carbon fibers which are alternately connected, and the large-tow precursors and the carbon fibers are in twisted winding connection. The ends, connected with the carbon fibers, of the large-tow precursors are knotted, the ends, packaged in a box, of the large-tow precursors can be connected with the ends, packaged in an adjacent box, of the large-tow precursors through the connecting method, knots are firm, and the breaking strength of the knots reaches 80000 cN or above; by using the connection method of twisted winding of the large-tow precursor end head, continuous production of large-tow carbon fibers can be realized, the roller winding frequency is reduced, the production safety is high, the stable production time is prolonged, the waste silk amount is reduced, the production cost is reduced, and the production efficiency is improved.

The utility model discloses a yarn clamping device which comprises a yarn clamping executing mechanism which is movably arranged in the set direction, the yarn clamping executing mechanism comprises a first clamping plate and a second clamping plate which is matched with the first clamping plate to clamp fiber yarns, and the first clamping plate and the second clamping plate are movably arranged. According to the yarn clamping device, manual yarn placement can be replaced, the situation that the temperature in a hot box is changed when a drafting hot box is opened is avoided, the production stability of fiber yarn is guaranteed, the quality of fiber yarn products is improved, waste yarn can be reduced, the starting time can be shortened, and automatic production can be achieved. The utility model further discloses a drafting hot box.

The present application belongs to the technical field of metal material pressure processing, in particular to a hot rolling process method of wire rod for dual-phase steel welding wire, which comprises providing an electroslag remelted ingot with PREN value of 42±1; heating the ingot to 1200±10 DEG C and conducting 16 passes of blooming to obtain 120*120mm square billet with single pass reduction of ≤16%; adopting four-section step beam type heating furnace with soaking section temperature of 1180-1210 DEG C and holding time of ≥90min; closing the cooling water of rough rolling and intermediate rolling, adopting 1150 DEG C induction temperature compensation after the Φ76mm rough rolling outlet to make the core-surface temperature difference ≤20 DEG C; sequentially conducting 14 racks of intermediate rolling, 4 racks of pre-precision rolling, 8 racks of precision rolling and 4 racks of reducing diameter, with final rolling speed of 70-75m / s, precision rolling temperature of 1080-1120 DEG C and wire laying temperature of 1100-1180 DEG C; after the wire rod is coiled, cooling to below 550 DEG C at 0.8-1.0 DEG C / s on the delayed Stelmor line, with residence time above 550 DEG C of ≤35s; online solid solution treatment: by setting the process, the problem that the traditional hot rolling process is difficult to meet the temperature and deformation control is solved.

The invention relates to the technical field of large-tow carbon fiber production, in particular to a large-tow carbon fiber and a continuous production method thereof, and discloses a large-tow fiber, the large-tow carbon fiber comprises large-tow precursors and carbon fibers which are alternately connected, and the large-tow precursors and the carbon fibers are connected in a flat knot tying mode. The end socket of the large-tow precursor end packaged in a box can be connected with the end socket of the adjacent large-tow precursor end packaged in the box, so that the knot is firm, and the breaking strength of the knot reaches 120000 cN or above; the method that adjacent large-tow precursor ends are connected in a flat knotting mode is used, continuous production of large-tow carbon fibers can be achieved, the number of times of roller winding is reduced, production safety is high, stable production time is prolonged, the amount of waste filaments is reduced, production cost is reduced, and production efficiency is improved.

The invention provides a steel wire breakage detection device and system in a steel cord electroplating process, the detection device comprises a pinch roller mechanism, a pinch roller mechanism, a fixing rod, a photoelectric sensing assembly and an alarm assembly, the steel wire breakage in the electroplating process is detected and alarmed in a real-time detection mode, an operator is reminded to carry out intervention treatment in time, and the production efficiency is improved. And emergency shutdown, production halt and damage caused by the serious situation of multi-strand wire breakage caused by single-strand wire breakage are avoided. Meanwhile, a plurality of detection devices can be arranged side by side and mounted on the same fixing rod, and the plurality of steel wire breakage detection devices respectively and independently correspond to the steel wire at each wire position to perform wire breakage detection on the penetrated steel wire. And for the found wire breaking condition, the broken steel wire is drawn out rapidly, the stability of a subsequent electroplated coating is improved, the wire twisting phenomenon in production is prevented, the production safety is improved, meanwhile, emergency shutdown and production halt caused by wire breaking and twisting are reduced, waste wires are reduced, and the production efficiency is improved.

The present invention discloses a spinning winding device and a spinning winding method, which relate to the technical field of spinning winding, and solve the technical problems of long wire hanging time and large amount of waste wire caused by multiple wire division positions in the related technology. The device includes a frame, an upper guide plate, a lower guide plate and a fork bracket, the upper guide plate is movably fixed to the frame, the lower guide plate is fixed to the frame, the fork bracket is movably installed on the frame, and the fork bracket is configured so that the wire bundle is wound around the fork head of the fork bracket and enclosed with the fork bracket to form a perforated area, so that after the wire bundle moves up with the fork bracket, the upper guide plate moves into the perforated area to hang the wire bundle on the upper guide plate. The fork bracket ensures sufficient wrap angle to ensure that the wire can be hung on the outermost side of the winding machine, without pushing the mobile wire guide to the innermost side first, and then pulling the mobile wire guide out to hang the wire after the wire bundle reaches the upper guide plate, which greatly reduces the time of spinning and reduces the amount of waste wire; and the load driving the fork bracket upward is small, which is conducive to reducing costs.

The invention discloses a low-dust-precipitation plastic weaving master batch and a preparation method thereof, and belongs to the technical field of plastic processing aids. According to the master batch disclosed by the invention, a core-shell-halo structure filler and a double-effect additive system are synergistically designed, and metallocene linear low density polyethylene / polybutylene-1 blending carrier resin, a silane coupling agent and an SEBS-g-MAH (Styrene-Ethylene-Butylene-Styrene-g-Maleic Anhydride) compatilizer are matched. According to the preparation process, uniform dispersion and strong interface combination of all the components are realized through the processes of filler vacuum activation, high and low speed segmented mixing and precise temperature control melt extrusion. The dust precipitation amount of the obtained master batch in plastic weaving processing is as low as 0.28-0.45 mg / m and is reduced by 59%-75% compared with that of a traditional master batch, meanwhile, it is guaranteed that the tensile breaking strength of a product is larger than or equal to 3.5 cN / dtex, the elongation at break is larger than or equal to 152%, and the master batch is suitable for the field of plastic weaving products with high requirements for dust control and mechanical properties such as chemical raw material packaging and high-end transportation packaging.

The present invention discloses a wire meter counting system and a method for using the same, which are applied to a wire drawing machine. Each wire drawing machine is composed of a plurality of reels and a take-up wheel. The meter counting system is arranged on the last reel of the wire drawing machine, and includes a gearbox transmission mechanism, a gearbox pulley, a trigger device, a high-frequency pulse trigger, a frequency divider, a pulse receiver and a PLC controller. A gearbox transmission mechanism is arranged below the reel, and a gearbox pulley is arranged on one side of the gearbox transmission mechanism. A trigger device and a high-frequency pulse trigger are arranged on the gearbox pulley. The high-frequency pulse trigger is arranged at the input shaft of the gearbox, and the high-frequency pulse trigger is connected to the frequency divider, and the frequency divider is connected to the pulse receiver, and the pulse receiver is connected to the PLC controller. The present invention tracks and counts the fluctuation of meter counting; improves the wire drawing meter counting device to improve its meter counting accuracy; and improves the uniform matching of the length of the steel wires between the wire drawing platforms.