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232results about How to "Reduce disconnection rate" patented technology

Upcast method for producing high-purity bright copper rod

The invention relates to an upcast method for producing a high-purity bright copper rod. The method comprises the following steps of: drying smelting copper raw materials needed by smelting, mixing, adding the mixture into a smelting furnace, and covering firing charcoal with the thickness of between 100 and 150mm on starting molten copper until red copper is entirely molten, wherein molten copper constantly flows toward a heat preservation furnace under the action of fluid force; boiling the high-temperature molten copper and degassing before ingot guiding, adding prepared high-purity graphite carbon powder onto the liquid level of the molten red copper in the heat preservation furnace, and aerating high-purity nitrogen at the position which is 50 to 100mm lower than the liquid level of the heat preservation furnace; covering the firing charcoal after boiling and degassing, covering a furnace cover, performing draw casting operation, drawing a draw casting machine for draw casting bythe upcast method, cooling in a graphite crystallizer by the upcast method to obtain a qualified high-purity oxygen-free copper rod blank, and winding on a drawn cast ingot passive winding machine; and performing multi-pass rolling and fine-drawing on the high-purity oxygen-free high-brightness copper rod blank by an eight-rack rod cold rolling mill, and drawing the blank until the copper rod is obtained by a wire drawing machine, namely obtaining a finished product after the copper rod passes the inspection.
Owner:ZHONGTIAN ALLOY TECH

Method for cutting silicon wafer through 55-micrometer diamond wire

The invention relates to a method for cutting a silicon wafer through a 55-micrometer diamond wire. The method comprises the following steps that a cutting wire net is arranged in a cutting area between an upper wire wheel and a lower wire wheel, the wire net is in a Z shape, the distance between two wire guide wheels is M, the distance between the upper wire wheel and the lower wire wheel is N, and M is equal to M; tension and running speed of the cutting wire net, and the silicon bar motion speed are set; at the starting processing stage, the tension of the wire net is 8N, the workpiece motion speed is 2.3 to 2.4 mm / min, the diamond wire moving speed is 600m / min, and cooling liquid is prepared; in the continuous machining process, the tension of the wire net ranges from 9 to 10 N, the workpiece motion speed is 2.4 mm / min, and the motion speed of the diamond wire is 1500 m / min; at the finishing stage, the tension of the wire net is 12 N, the workpiece motion speed is 1.0 mm / min, and the diamond wire motion speed is 1300 to 1500 m / min; cooling liquid flow is set, wherein at the starting machining stage, the flow is 50 to 55 kg / min, at the continuous machining stage, the flow is 500kg / min, and at the finishing stage, the flow is 50 to 55 kg / min; and the wire arch of the cutting wire net and cutting strength of the extremely thin wire are matched, and the wire breaking problem is solved.
Owner:WUXI ZHONGHUAN APPLIED MATERIALS CO LTD

Method for bonding crystal bar splicing seams

The invention discloses a method for bonding crystal bar splicing seams, which belongs to the technical field of crystal rod bonding. The invention aims to solve the problem of providing the method, which can effectively reduce the disconnection rate, for bonding the crystal bar splicing seams. An adopted technical scheme is that the method is implemented according to the following sequence: a, preparing bars, namely arranged at least two shorter crystal bars in pairs to satisfy the length required by slicing machine processing; b, preprocessing selected crystal bars to ensure that the end face verticality of the crystal bars is less than or equal to 1.5 mm, and the end faces are clean without impurities; c, bonding the crystal bars, namely applying glue water to the end face of one of the crystal bars and butting the two crystal bars; d, processing the crystal bars after bonding, namely cleaning residual glue on the surfaces of the crystal bars, and standing the well-bonded crystal bars for 20 minutes; and e, repeating the third step and the fourth step to bond all the crystal bars arranged in pairs. The method can effectively reduce the disconnection rate and the rejection rate of the crystal bars, and improve the rate of finished products to a great extent, so the production cost is reduced, and the method can be popularized and applied to the crystal bar bonding before crystal bar slicing.
Owner:山西天能科技股份有限公司

Ultra-fine aluminum magnesium alloy filament material and preparation method thereof

The invention discloses an ultra-fine aluminum magnesium alloy filament material and a preparation method thereof. The ultra-fine aluminum magnesium alloy filament material comprises the following components of raw materials in percentages by weight: 2.8-3.8% of Mg, 0.2% of Mn, 0.1-0.2% of Zr, 0.1-0.2% of Cr, other impurities with the total content of smaller than 0.3% and the balance of Al. The preparation method comprises the following steps: smelting the raw materials of the aluminum magnesium alloy filament, carrying out flat leading rod casting to form a rod piece with the diameter of 8.5 mm, carrying out primary drawing to form an aluminum magnesium alloy filament material with the diameter of 5.0 mm, carrying out annealing, and preserving the temperature for 2-2.5 h; then carrying out secondary drawing to form a rod piece with the diameter of 1.16 mm, then carrying out secondary annealing, and preserving the temperature for 5-6 h; and then carrying out third drawing through a high-speed superfine wire drawing machine to form a finished product, aluminum magnesium alloy filament material with the diameter of 0.09 mm. Through the adoption of the preparation method disclosed by the invention, the strength and conductivity of the aluminum magnesium alloy filament are improved, the thread breaking rate and fineness of the filament material are also reduced, the performance of 5154-series aluminum magnesium alloy filament material is improved, and the quality of the product is improved.
Owner:BAISE UNIV

Computer embroider machine needle bar cam mechanism with balancing device

InactiveCN104480653AReduce vibrationVibration is reduced or even eliminatedEmbroidering machines apparatusEngineeringCentrifugal force
The invention discloses a computer embroider machine needle bar cam mechanism with a balancing device. The computer embroider machine needle bar cam mechanism with the balancing device comprises a needle bar transmission cam and a needle bar driving connecting rod, wherein the needle bar driving connecting rod, the needle bar transmission cam and a bearing between the needle bar driving connecting rod and the needle bar transmission cam are integrally designed and manufactured, the integrally manufactured component is an eccentric connecting rod bearing, the eccentric connecting rod bearing comprises an eccentric bearing inner ring, a cam cover plate is arranged on the eccentric bearing inner ring, a line-picking nylon cam is arranged on the cam cover plate, a balancing weight is arranged on the cam cover plate, and the cam cover plate and the balancing weight are used for balancing centrifugal force generated when the line-picking nylon cam and the eccentric connecting rod bearing run. The computer embroider machine needle bar cam mechanism with the balancing device has the beneficial effects that the assembly precision and the mechanical strength of the needle bar driving connecting rod are improved, the service life of an embroider machine head and the eccentric bearing between the needle bar cam and the line-picking nylon cam are prolonged, the reliability of the machine is improved, and the durability and the economical efficiency are improved.
Owner:浙江博盟精工机械有限公司

Production technology of novel three-dimensional simulated hand-embroidered ornaments

The invention relates to a production technology of novel three-dimensional simulated hand-embroidered ornaments, which comprises the following process steps: 1) binding a bottom lining in a machine frame of a computer plain embroidery machine, firstly embroidering the flower shape outline on the bottom lining, removing the bottom lining in the flower shape outline after pasting viscose glue on the periphery of the flower shape outline, gluing a non-woven lining capable of filling the flower outline, and gluing embroidered objects on the upper layer of the non-woven lining; 2) carrying out computer plate making according to flower shape patterns to be embroidered for obtaining a machine embroidering plate, and regulating the needle step length within a needle step length range between 3 and 35 mm during the plate making; 3) embroidering the flower shape patterns on the embroidered objects by the computer embroidery machine; and 4) trimming unnecessary threads of the front side of the embroidered objects after the embroidery is completed, and peeling off the non-woven lining of the back side of the embroidered objects. Compared with the prior art, the invention has the advantages that large needle hole board accessories are added on the original TMFD plain embroidery machine, so products have the function suitable for thick thread embroidery, the bold and generous effect of the hand embroidery can be embodied, the three-dimensional effect is strong, and patterns are lifelike, elegant and vivid.
Owner:利均刺绣(海宁)有限公司

Base-station-signal-quality-based base station selection method and apparatus

The embodiment of the invention discloses a base-station-signal-quality-based base station selection method. The method comprises: channel statistic information uploaded by a reference user terminal is received, wherein the channel statistic information includes connection losing rates or disconnection rates of base stations and channels of connection between a reference user terminal and the base stations; according to the channel statistic information, average connection losing rates or average disconnection rates that correspond to all base stations are calculated; a base station with the average connection losing rate or disconnection rate larger than or equal to a threshold value is searched; and according to the average connection losing rate or disconnection rate, a channel evaluation report is generated and is issued to a target user terminal under jurisdiction of the searched base station, and the target user terminal determines switching or reselection based on the channel evaluation report. In addition, the embodiment of the invention also discloses a base-station-signal-quality-based base station selection apparatus. Using the method and apparatus provided by the invention, connection of a base station with a signal fault can be avoided and the communication quality of the terminal is improved.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Multiwire cutting equipment and wire mesh tension control mechanism for same

The invention discloses multiwire cutting equipment and a wire mesh tension control mechanism for the same. The multiwire cutting equipment comprises a base, a cutting assembly, a first tensioning mechanism and a second tensioning mechanism; the cutting assembly comprises a first cutting roller , a second cutting roller and a third cutting roller which are arranged to be shaped like a triangle; the first tensioning mechanism comprises a first winding drum, a first rotating motor and a first adjusting assembly provided with a first tension transition wheel; the second tensioning mechanism comprises a second winding drum, a second rotating motor and a second adjusting assembly provided with a second tension transition wheel. A cutting wire starts from the first winding drum and is wound around the first adjusting assembly, the first cutting roller, the second cutting roller, the third cutting roller and the second adjusting assembly and then wound on the second winding drum; when cutting is conducted, the first winding drum is matched with the first tension transition wheel, so that it is guaranteed that the cutting wire is in a tension balance state; the second winding drum is matched with the second tension transition wheel, so that it is guaranteed that the cutting wire is in the tension balance state.
Owner:海宁市日进科技有限公司

Wire arranging and collecting device in wire drawing machine

The invention discloses a wire arranging and collecting device in a wire drawing machine, which can reduce the resistance to wires in the process of arranging and collecting the wires. The wire arranging and collecting device comprises a rotary shaft and a machine frame; a wire passing wheel and a wire collecting motor are arranged on the machine frame, wherein the wire passing wheel is positionedabove the rotary shaft; a wire arranging motor is also arranged on the machine frame; an output shaft of the wire arranging motor is connected with a ball feed screw which is movably arranged on themachine frame; a slide block is arranged on the ball feed screw, and is fixed with a mounting seat which is arranged on the machine frame in a sliding mode; the rotary shaft is movably arranged on themounting seat; and the output shaft of the wire collecting motor is connected with the rotary shaft through a transmission gear. The wire arranging and collecting device adopts a shaft driving type wire collecting and arranging mode, namely, the shaft (the rotary shaft) is moved, while the wires are not moved, so the resistance to the wires in the process of arranging and collecting the wires canbe greatly reduced, the possibility of breaking the wires is greatly lowered, and the application range of the wire drawing machine is extended.
Owner:JIANGSU JIACHENG TECH

Sewing machine and broken stitch detection mechanism thereof

The invention provides a broken stitch detection mechanism of a sewing machine. A stitch clamping screw of an existing stitch trapper of a sewing machine body is sleeved with a stitch take-up spring. The stitch take-up spring is sleeved with an insulation cylinder base. A stitch take-up hook of the stitch take-up spring stretches out from a stretching window in the insulation cylinder base through a section of a stretching arm; under the effect of pre-tensioning twisting force of the stitch take-up spring, the stretching arm makes elastic contact with a first detection piece in the stretching window, and the insulation cylinder base is further provided with a second detection piece electrically connected with the stitch take-up spring; when a stitch exists on the stitch take-up hook of the stitch take-up spring, and the stitch take-up hook is pulled so that the stretching arm can deflect to be disconnected with the first detection piece; when the stitch is broken, the stretching arm recovers to make contact with the first detection piece under the effect of the stitch take-up spring. Accordingly, according to the broken stitch detection mechanism of the sewing machine, the stitch take-up spring on the existing stitch trapper of the sewing machine is used for generating broken stitch detection signals, tension of the stitch will not be increased, the broken stitch probability is reduced, and the sewing working fault rate is lowered.
Owner:JACK SEWING MASCH CO LTD

Cutting device suitable for adjustment of diamond wire mesh and cutting method

The invention discloses a cutting device suitable for adjustment of a diamond wire mesh and a cutting method, and belongs to the field of photovoltaic products. According to the cutting device, the cutting wire mesh is arranged between two wire guiding wheels, a plurality of crystal rods are fixedly mounted on a crystal holder, edge cutting gaps are formed in the first end and the tail end, at thewire guiding wheels, of the cutting wire mesh correspondingly, the two edge cutting gaps correspond to the edge of the left side of the crystal rod located on the left side, and the edge of the rightside of the crystal rod located on the right side correspondingly, and a first diamond wire at the wire inlet end and a first diamond wire at the wire outlet end of the cutting wire mesh are arrangedwith the corresponding crystal rods in a staggered mode. The method comprises the steps that the crystal holder moves downwards, thus all the crystal rods descend at the speed of 2.0-2.2 mm/min, allthe crystal rods start to be cut after making contact with the cutting wire mesh, and the first crystal rod, the second crystal rod and the third crystal rod are cut simultaneously through the cuttingwire mesh. The first wire at the wire inlet end and the first wire at the wire outlet end of the cutting wire mesh can be prevented from being broken; and by adjusting the length of the cutting gaps,the crystal rods of different lengths can be quickly switched to be cut.
Owner:扬州续笙新能源科技有限公司
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