31results about How to "Not prone to permanent deformation" patented technology

The no-ironing finishing process of pure cotton textile includes the available steps of preparation, preflexibilizing, framing and settling, calendering, preshinking and packing as well as increased rolling supercrosslinking assistant, storing and water washing steps inserted between available preflexibilizing and framing steps. The textile after the said treating process is soft, permeable, water absorbing and no need of ironing and has low formaldehyde content.

The invention discloses high-strength super-toughness resin concrete which is composed of aggregate, packing and a sizing material. The high-strength super-toughness resin concrete is characterized in that the sizing material is composed of resin A and a curing agent B. The resin A is composed of epoxy resin, polyurethane prepolymer, polycarbonate and a functional agent. The weight percentage of the resin A and the curing agent B is 1:1-2:1, and the packing is inorganic powder. The aggregate is composed of super-fine sand, coarse sand and gravel. The epoxy resin is bisphenol A epoxy resin. The functional agent comprises accelerant, a water reducing agent, a defoaming agent and a coupling agent. The curing agent is long-chain aliphatic series anhydride. The high-strength super-toughness resin concrete has the advantages that strength is high and even, cracking and breaking do not happen, the deformation capability is good, the elasticity recovery rate is high, and the high-strength super-toughness resin concrete is not prone to permanent deformation at a high temperature.

The invention provides a production technology of novel copper- nickel-titanium orthodontic arch wire aiming at the problems that with further development and improvement of orthodontics systems, requirement on orthodontic products is higher gradually, and the traditional stainless steel orthodontic arch wire and nickel-titanium alloy orthodontic arch wire both cannot meet the requirement on clinical operation and therapeutic effect well due to respective certain defects. The orthodontic arch wire has special mechanical property and characteristics, and can be used for solving the detects of the traditional orthodontic arch wires well. Basic production process of the copper-nickel-titanium orthodontic arch wire comprises the steps of: 1. carrying out wire drawing, namely carrying out hot drawing and cold drawing, wherein hot drawing temperature is 650-720 DEG C, and cold deformation after cold drawing is controlled to be 45%+/-5%; 2. carrying out aging treatment, specifically, placing a preformed orthodontic arch wire into a holding furnace, keeping the temperature to be 480-600 DEG C, preserving heat for 0.5-3.5h, and cooling the orthodontic arch wire with water after being discharged; and 3. carrying out surface treatment, specifically, carrying out acid pickling, polishing and other processing on the orthodontic arch wire subjected to the aging treatment.

The invention discloses a PU foaming shoe material capable of releasing negative ions and a preparation method thereof. The PU foaming shoe material is prepared from the following raw materials in parts by weight: 70-80 parts of polyester polyurethane, 12-16 parts of ethylene-vinyl acetate copolymer, 5-7 parts of styrene-ethylene-butadiene-styrene block copolymer, 4-6 parts of a negative ion additive, 1.2-1.7 parts of 4-methylbenzenesulfonyl hydrazine, 0.45-0.55 parts of triethylene diamine, 0.08-0.12 parts of triallyl isocyanurate, 2-3 parts of talcum powder, 2-4 parts of titanium dioxide, 1-2 parts of zinc oxide, 2-4 parts of stearic acid and 1.5-2.7 parts of zinc stearate, wherein the negative ion additive is a mixture of opal powder and medical stone powder, and the mass ratio of opalpowder to medical stone powder is 1: (0.6-0.8). The PU foaming shoe material capable of releasing negative ions is small in density and light in weight; the indentation hardness is high, the tensile strength is high, and the mechanical property is good; the rebound rate is high, the compression set rate is low, the elasticity is good, and permanent deformation is not likely to happen in the usingprocess; and the overall performance is excellent.

The invention provides a buckle assembly and belongs to the field of mounting and fastening structures. The buckle assembly comprises a secondary buckle and a primary buckle, wherein the secondary buckle and the primary buckle can be connected in a clamped mode. The secondary buckle comprises a pressing part, a guide post and a limiting structure. The limiting structure is arranged at the insertion end of the guide post. The pressing part is arranged at the other end of the guide post. The primary buckle comprises a primary buckle base, a guide part and a step clamping part arranged on the side edge of the guide part. The guide part is arranged on the primary buckle base. The primary buckle base is provided with a through hole for the secondary buckle to be inserted in. The guide part is provided with a hollow portion. The through hole corresponds to the hollow portion. The secondary buckle is connected in the hollow portion in a clamped mode. The buckle assembly has the beneficial effects of being capable of being used repeatedly, low in cost, not liable to generate permanent deformation, suitable for fastening base materials of different thicknesses, reliable in performance and easy to dismount.

The invention discloses an improved voice coil motor. The improved voice coil motor comprises an upper spring plate, an upper spring plate mounting rack and a lens carrier, wherein a plurality of supporting legs are arranged on the upper spring plate mounting rack; the upper spring plate is fixed on the supporting legs; the upper spring plate comprises fixed regions, an inner ring region and a plurality of elastic arm regions; the fixed regions are fixedly arranged on the supporting legs; the inner ring region is fixed on the lens carrier; the elastic arm regions connect the fixed regions and the inner ring region; the upper spring plate also comprises reinforcement plates connecting two adjacent fixed regions; and each reinforcement plate is vertical to the plane where the fixed regions are located. The improved voice coil motor has the following positive effects: the upper spring plate comprises the reinforcement plates connecting two adjacent fixed regions and each reinforcement plate is vertical to the plane where the fixed regions are located; therefore, the reinforcement plates can effectively improve the strength of the upper spring plate on the basis that the floor area is not increased, so that the upper spring plate is not liable to deform permanently during mounting and operation and the yield is effectively improved, thus reducing the manufacture cost to some extent.

The invention discloses a shovel tooth and elastic tooth roller combined type peanut pickup device, and belongs to the technical field of agricultural machinery. The shovel tooth and elastic tooth roller combined type peanut pickup device comprises picking shovel teeth, roller protection plates, a picking roller, a roller sliding way and side plates; a center shaft of the picking roller penetratesthrough the side plates at the two sides to be installed on bearing pedestals, picking elastic teeth are evenly arranged on an elastic tooth shaft of the picking roller at intervals, and the roller protection plates are arranged between the adjacent picking elastic teeth; at the advancing front end of the pickup device, arc-shaped picking shovel teeth of the same structure are installed at the same position of each roller protection plate to form a row of shovel teeth; and the roller sliding way is fixedly installed in one side plate and is in sliding connection with the elastic tooth shaft on the picking roller. According to the pickup device, the peanut plants are shoveled up through the shovel teeth; the picking roller rotates along the roller sliding way, and the elastic teeth rotatearound the center shaft along with the roller and periodically and repeatedly swing due to the limitation of the roller sliding way, so that actions of lifting, pushing and returning to a station by the elastic teeth are realized; and the impact of the roller on a cam sliding way can be effectively reduced, large stress concentration is avoided, and the service life of the cam sliding way is prolonged.

The invention discloses an O-shaped seal ring of an automobile fuel oil pump and belongs to the technical field of fuel oil pumps. The O-shaped seal ring of the automobile fuel oil pump comprises a seal ring body and a dustproof strip. The dustproof strip is fixedly connected to the back side of the seal ring body. A manufacturing method of the O-shaped seal ring of the automobile fuel oil pump comprises the following steps of rubber inner ring formation, snap cage fixation, injection molding and dustproof strip fixation. The O-shaped seal ring of the automobile fuel oil pump is provided withthe dustproof strip, so that during installation and use, external dust can be prevented from entering the O-shaped seal ring installation portion, and it is avoided that the dust enters the O-shapedseal ring and accelerates wear of the O-shaped seal ring; the seal ring body adopts multi-layer design and is provided with a cold-resistant outer sheath, so that the cold resistance of the O-shaped seal ring is greatly improved, and the O-shaped seal ring can be used under cold conditions; multiple snap cages are annularly arranged in the O-shaped seal ring, so that the O-shaped seal ring has good rebound resilience, when the O-shaped seal ring is used and squeezed for a long time, the O-shaped seal ring is not prone to generating permanent deformation, and the O-shaped seal ring can always keep good seal performance.

The invention provides a wind power blade demoulding hoisting clamp. The wind power blade demoulding hoisting clamp comprises a C-shaped seat, a pressing block connecting rod obliquely arranged and installed on the C-shaped seat in a swinging mode and a pressing block assembly installed at the lower end of the connecting rod and used for compressing a blade on the C-shaped seat. The wind power blade demoulding hoisting clamp is characterized by further comprising an elastic hoisting assembly capable of driving the pressing block connecting rod to swing, the elastic hoisting assembly is movablyinstalled on the C-shaped seat and enables the initial spacing between the pressing block assembly and the C-shaped seat to be the largest through an initial oblique angle of an elastic positioning pressing block connecting rod, the blade extends between the C-shaped seat and the pressing block assembly, blade gravity is located on the C-shaped seat with the upward hoisting of the elastic hoisting assembly, and the pressing block connecting rod swings downwards with the hoisting of the elastic hoisting assembly to enable the spacing between the pressing block assembly and the C-shaped seat tobe reduced and pressed on the blade. According to the wind power blade demoulding hoisting clamp, the blade is effectively protected from being damaged in the demoulding process due to clamping, thereliability and safety of the clamp are improved, the demoulding efficiency of the blade is improved, and the service life is long.

The invention discloses a traditional Chinese medicine antibacterial PU foaming shoe material with good moisture absorption performance and a preparation method thereof. The material is prepared fromthe following raw materials in parts by weight: 80-90 parts of polyurethane, 10-14 parts of styrene-ethylene-butadiene-styrene block copolymer, 4-6 parts of polyethylene oxide, 4-6 parts of epoxidizedsoybean oil, 2-2.6 parts of fructus cnidii, 1.4-1.8 parts of dandelion, 2.4-3.6 parts of carboxymethyl cellulose, 1.8-2.2 parts of 4-methylbenzenesulfonyl hydrazine, 0.6-0.75 part of triethylene diamine, 0.08-0.1 part of triallyl isocyanurate, 5-9 parts of a filling material, 1.2-1.6 parts of zinc oxide, 2.5-4 parts of stearic acid and 1.5-2.7 parts of zinc stearate. The traditional Chinese medicine antibacterial PU foaming shoe material with the good moisture absorption performance is small in density and light in weight; the antibacterial rate is high, and the antibacterial performance is good; the tensile strength is high and the mechanical property is good; the resilience rate is high, the compression set rate is low, and the elasticity is good; the comprehensive performance is excellent, and durability and antibiosis are achieved.

A production process of cushion rubber is related to the technical field of rubber and comprises the following steps: burdening: preparing materials, including, by weight: 20-30 parts of natural rubber, 16 parts of cis-butadiene rubber, 10 parts of tread reclaimed rubber, 3 parts of a toughener, 3 parts of an elastic agent, 0.2-0.8 part of calcium silicate, 1 part of zinc oxide, 0.05 part of stearic acid, 0.3 part of a plasticizer, 20 parts of an antiaging agent, and 10 parts of calcium carbonate, the toughener being polyvinyl butyral and dioctyl phthalate having an addition ratio of 2:1, and the elastic agent being butadiene copolymer, ethyl acetate and maleic anhydride having an addition ratio of 2:1.5:1; mixing: blending well the materials, and mixing in a mixer at 40 DEG C for 30 min; mold forming: forming the mixed materials with a mold, and cooling. The rubber produced herein has low price, high elasticity, high toughness, long service life and permanent deformation resistance.

The invention discloses a spiral tooth roller type peanut picking device, and belongs to the technical field of agricultural machinery. Comprising picking teeth, a roller protection plate, a spiral picking roller, a left side plate, a right side plate and a rear side plate, a center shaft of the picking roller is installed on bearings of the left side plate and the right side plate, and the left side plate and the right side plate are fixedly connected with the rear side plate. Four to eight pick-up teeth are evenly arranged on the tooth roller discs in the circumferential direction of the tooth roller discs, the pick-up teeth are fixed on the tooth roller seat, the tooth roller discs are installed on the center shaft at equal intervals in the axial direction of the center shaft, and the pick-up teeth of the adjacent tooth roller discs are arranged in the same rotating direction in the circumferential direction in a staggered mode by 15 degrees to 30 degrees. During picking operation, the picking teeth are in contact with peanut plants in sequence, and the phenomenon of'heap 'can be effectively avoided. And the protective plates are arranged between the adjacent tooth roller seats and are mounted on the rear side plate. The roller rotates along with the center shaft and is matched with the unit to move forwards, the elastic teeth pick up peanut plants from bottom to top, and a working cycle of picking, lifting, pushing and backlash is completed in sequence.

The invention relates to a conductive assembly structure of a wire connecting device, which plays a role of increasing the conductive efficiency and the stability of a combined wire. The conductive assembly comprises a plate-shaped body and a restriction body connected to the body, and the restriction body is provided with a first base portion, a first arm and a second arm which are connected to the base portion and a free segment connected to the first arm and the second arm, thereby enabling the restriction body to have an elastic clamping function together. When a wire is inserted into and contacted with the conductive assembly, the tail end of the wire is enabled to at least be pressed between the first arm and the second arm of the restriction body to form fixation, thereby improving the situation that the conductive efficiency and safety of the wire are affected by deflection or shaking and unstable contact due to an external force.

A production process of elastic rubber, relating to the technical field of rubber, comprising the following steps: batching: preparing raw materials, the raw materials include natural rubber, butyl rubber, toughening agent, 3-8 parts of elastic agent, calcium silicate, oxidized Cobalt, plasticizer, anti-aging agent and boron trifluoride; the elastic agent is butane conjugated diene, pentaerythritol oleate and maleic acid glycoside; mixing: after fully mixing other substances in the raw materials except the elastic agent Put it into the mixer for mixing treatment; mold forming: use the mold to shape the mixed raw materials, and then cool them; stress treatment: soak the formed rubber in clean water, then boil, boil The temperature is 80-100° C., and the time is 5-10 minutes. The rubber produced by the invention is cheap, has high elasticity, high toughness, long service life and is not easy to be permanently deformed.

The invention relates to a laterally triggered musical instrument switch pressing assembly, a musical instrument control switch and a musical instrument control device. The musical instrument switch pressing assembly comprises a shell, an elastic reset mechanism and a pressing shaft, the pressing shaft penetrates through the shell through a through hole, one end of the pressing shaft is a pressingend, the other end of the pressing shaft is a triggering end, the elastic reset mechanism is arranged in the shell, and the pressing shaft can move relative to the shell from the initial position inthe stroke direction of the musical instrument switch pressing assembly. The surface of the trigger end is provided with a projection in a direction perpendicular to the stroke direction of the musical instrument switch pressing assembly. When the musical instrument switch pressing assembly is used, the pressing type switch can be arranged according to the shape of the protrusion and the stroke distance of the pressing type switch, so that the protrusion extrudes the pressing type switch in the moving process to be switched on, and excessive pressure on the pressing type switch due to excessive pressing force of a user is avoided; permanent deformation of an elastic mechanism in the push-type switch is avoided, and the service life of the musical instrument control switch can be prolonged.