33results about How to "Not prone to wire breakage" patented technology

The invention discloses a double-main-filament primary-assistant triple-helix energy-saving lamp filament and a manufacturing method thereof, which is spirally wound by a filament secondary winding body (4), and the filament secondary winding body (4) consists of The filament primary winding body (3) is helically wound; the filament primary winding body (3) is composed of two main tungsten wires (1) and molybdenum wire (7) and two main tungsten wires (1) ) and one or more auxiliary tungsten wires (2) on the molybdenum wire (7). The invention has the characteristics of higher reserves of electronic powder, stronger bombardment resistance, high thermal effect, faster temperature rise and long service life, and the winding speed is faster during production, the winding efficiency is higher, and the winding is not easy to cause broken wires. The product qualification rate is high.

The invention discloses a method for manufacturing a large cross-section and high-resolution flexible optical fiber image transmission bundle. An optical fiber monofilament with two claddings is drawn by a three-crucible or rod-tube method. The rigid optical fiber image transmission unit body with a regular polygonal cross-section is drawn by wire drawing, and the hard optical fiber image transmission bundle with a large cross-section is obtained after the second wire arrangement of the unit body, and the hard optical fiber image transmission bundle is thermally fused at the end Afterwards, the middle part is placed in an acid solution to dissolve the acid-soluble layer to obtain a flexible optical fiber image transmission bundle. Using the manufacturing method of the present invention can produce a circular section or a regular polygonal section, the size of the regular hexagonal section is 8.8 mm, the size of the square section is more than 5 mm, the length can reach 6 meters, and the resolution can reach up to 191 lp / mm. High resolution flexible fiber optic imaging bundle.

The invention discloses a production technology of a copper braided wire. The production technology comprises the step of arranging a pay-off stand: bobbin copper wires are fixed on the pay-off stand,the bobbin is released and the copper wire connector penetrates through a sliding wheel; the step of wire scutching: the copper wires are pulled out of the pay-off stand to be wound on a spindle for3-4 circles in a clockwise way, all the copper wires are adjusted to be on the same plane and consistent in degree of tightness and wire scutching is performed; the step of arranging the spindle: thespindle after processing of the step of wire scutching is arranged on a braiding machine, the copper wires penetrate through the middle of the spindle to be pulled to a driving wheel and then compressed by a rolling wheel in the middle of the driving wheel; the step of gear adjustment: the power is disconnected and the size and the tooth space of the gear are adjusted; the step of braiding: the braiding machine is started to perform braiding, and the thickness, the uniformity and the appearance of the braided wire are inspected; and the step of wire leading: the braided copper braided wire isled to a rubber roller to perform coiling. With application of the production technology of the copper braided wire, the phenomenon of wire fracturing is not liable to occur in the production process,and the copper braided wire obtained through braiding is uniform without the situation of burrs or wire fracturing.

The invention provides a woven type venae cava filter. The woven type venae cava filter is characterized by comprising a filter part, a fixing part and connecting parts, wherein the filter part, the fixing part and the connecting part are woven together and distributed in sequence from a heart near end to a heart far end; the filter part comprises N1 Y-type woven structures distributed in the circumferential direction; the fixing part comprises N1 ridges distributed in the circumferential direction; the connecting parts are of conical woven structures which are formed by extending directly the N1 ridges of the fixing part and ligating by second steel bushings or conical woven structures which are formed by extending the N1 ridges of the fixing part, then weaving, and then ligating by the second steel bushings. Another technical scheme of the invention provides a weaving method of the woven type venae cava filter. The venae cava filter, provided by the invention, can intercept larger size internal clots in the pulmonary embolism dangerous period, prevents venae pulmonales embolism, keeps smooth for a long term by shear force, can be taken out by an interventional operation after passing the pulmonary embolism dangerous period, and also can remain in a patient's body for a long term.

The invention discloses a dragging twist-resistant metallic shield flexible cable for mining equipment. The flexible cable comprises a protective sleeve, a plurality of power wire cores and a plurality of ground wire cores, high-strength fibers and control wire cores, wherein each control wire core comprises a conductor, a high-elasticity rubber insulation layer and a heat-resisting thin slip band layer; the conductor is wrapped with the high-elasticity rubber insulation layer and the heat-resisting thin slip band layer; the high-elasticity rubber insulation layer is located between the conductor and the heat-resisting thin slip band layer; each power wire core comprises a conductor which is wrapped with a heat-resisting semiconductor nylon shield strip layer, an insulation layer and a heat-resisting semiconductor nylon shield strip, metal and fiber fixing weaving layer sequentially from inside to outside; each ground wire core comprises a conductor and a semiconductive elastic rubber layer, and the conductor is wrapped with the semiconductive elastic rubber layer; and outer sides of the plurality of the power wire cores and the plurality of the ground wire cores, the high-strength fibers and the control wire cores are wrapped with the protective sleeve, so that a whole is formed. The dragging twist-resistant metallic shield flexible cable is good in flexibility, tensile resistance and twist resistance and longer in service life.

The present invention relates to a method for preparing spandex fiber with a low breakage rate, and more particularly, to a method for manufacturing spandex by introducing a blended solution of an anti-wear agent and a flow promoter into a polyurethaneurea spinning solution, 1) By blending and dissolving the anti-wear agent and the flow promoter in an organic solvent, a blended solution A is prepared; 2) the above-mentioned blended solution A is added to the polyurethaneurea spinning solution B to prepare a spinning dope C, Spinning and winding of the above-mentioned spinning dope C were carried out. The manufacturing method has a simple and convenient implementation process, and can be widely applied to different varieties of spandex fibers, and the situation of the prepared spandex fibers being broken is obviously reduced.

The invention discloses a preparation method of a PVDC (polyvinyl dichloride) composition for spinning. The preparation method of the PVDC composition for the spinning comprises the following steps of carrying out a polymerization reaction on the following raw materials in parts by weight: 49 to 60 parts of deionized water, 20 to 30 parts of vinylidene chloride monomers, 3 to 9 parts of vinyl chloride monomers, 0.06 to 0.3 parts of initiator, 0.02 to 0.04 part of pH (potential of hydrogen) value buffer conditioning agent and 0.01 to 0.05 part of dispersing agent, after the reaction is carried out for 25 hours to 35 hours, terminating the polymerization reaction, separating out residual monomers in a vacuum manner, and cooling, discharging, centrifuging and drying an obtained material; adding 0.5 to 0.8 part of plasticizer and 0.05 to 0.2 part of lubricating agent into the dried material, and mixing and curing an obtained mixture, so as to obtain a PVDC composition product for the spinning. The PVDC composition prepared by the preparation method of the PVDC composition for the spinning has favorable heat stability and spinning processing performance.

The invention relates to a rinsing and hot drawing device for fibre tow spinning. The device comprises a box body, a heat source supply device arranged outside the box body, a plurality of transmission devices which are fixed on the box body and arranged in the box body and a waste heat collecting device arranged on the top of the box body, wherein each transmission device contains a transmission shaft and a transmission roller sleeved on the transmission shaft; the transmission roller is prepared from a porous material; the transmission shaft is of a hollow structure; a plurality of liquid outlet holes are uniformly distributed on the side wall of the transmission shaft; and the heat source supply device is communicated with a plurality of transmission shafts respectively. By adopting the rinsing and hot drawing device, the technical problems that the existing rinsing and hot drawing device for fibre tow spinning damages the fibre tow and has low drawing efficiency can be solved. The invention provides the rinsing and hot drawing device for fibre tow spinning which can realize that the high strength of the carbon fibre precursor tow can be ensured and the filaments can not be broken easily under a large drafting force.