27results about How to "Prevent thinning" patented technology

The invention provides a forming method and device for a high-torsion-degree blade, and belongs to the technical field of pipe machining. The forming method comprises the steps that firstly, a tubular blank is filled with low-melting-point metal to form a solid pipe, then the solid pipe is extruded into a preformed blade with cambered surfaces on the two sides through a preforming device, projections of all the cross sections of the preformed blade coincide in the longitudinal direction, and the preformed blade is formed. The method comprises the following steps: pre-forming a blade, respectively clamping two longitudinal ends of the pre-formed blade by adopting a torsion forming device, enabling the two longitudinal ends to relatively rotate so as to twist the blade, correcting the shape of the twisted blade by adopting a shape correcting device, and finally melting the low-melting-point metal to obtain the high-torsion-degree blade. Compared with an existing forming process, the overall deformation process only comprises extrusion, torsion and shape correction, the forming process is simplified, the machining efficiency can be improved, the low-melting-point metal and the tubular blank are compounded from the beginning, and the material buckling problem in the subsequent forming process is avoided.

The invention relates to the technical field of diamond tools, in particular to a diamond saw blade with bidirectional tooth protection tool bits and a production process of the diamond saw blade. The plurality of groups of tool bits convexly extend to the outer side of the base body and are distributed in an annular array by taking the base body as the center; the chip grooves are formed between the adjacent groups of tool bits and comprise first groove bodies for separating the adjacent groups of tool bits and second groove bodies formed by sinking from the first groove bodies to the interior of the base body; wherein the second groove body is concaved towards the cutter head side from the connecting position of the second groove body and the first groove body to form protection teeth, each group of cutter heads is provided with two groups of protection teeth, and the two groups of protection teeth are distributed on the two sides of the group of cutter heads. The tool bit is specially designed to be in the two-way tooth protection shape, so that more chip grooves are formed in the saw blade cutting and contact face, the two-way tooth protection can effectively protect a base body and prevent the base body from being worn too fast and thinned, the large U-shaped chip grooves of the tool bit can take away more gravel and chips when concrete granite is cut, cutting resistance is reduced, and working efficiency is improved.

The invention discloses a glass sand blasting machine which comprises a conveying system, a working bin, a lifting door assembly, a spray gun assembly, a sand grain feeding assembly, a cyclone separator, a dust removal system and an electric control box. The driving air cylinder drives the spray gun to swing, and the sand blasting force can be changed by adjusting the swing angle of the spray gun, so that different sand blasting effects are formed, the situation that the surface of glass is thinned due to excessive local sand blasting can be avoided, the sand blasting force is uniform, and the sand blasting quality is stable; the transmission system, the lifting door assembly, the spray gun assembly and the like are controlled by the electric cabinet, the automation intensity is high, and the labor intensity of operators is reduced; the cyclone separator and the dust removal system are adopted to improve the sand blasting environment, improve the utilization rate of sand grains, prevent sand grains and dust from overflowing, and have the characteristics of environmental protection and safety.

The invention provides a manufacturing device and method for an integral drive axle housing of a truck. The device comprises a heating system, a forming mold, an air expansion system, a vacuum system and a flow guide shaft sleeve, a pipe is assembled on the outer wall of the flow guide shaft sleeve, the pipe and the flow guide shaft sleeve are installed in a cavity of the forming mold, and the heating system is installed on the forming mold and used for heating the pipe; the inflatable system is connected with the forming die and the flow guide shaft sleeve and used for bulging the heated pipe through gas pressure, the cavity is filled with the heated pipe, and the needed drive axle housing shape is formed; the vacuum system is connected with the forming mold and the flow guide shaft sleeve and used for providing a vacuum or vacuum-like environment. The metal material which is difficult to machine at normal temperature can be formed, the precision and strength of the product are remarkably improved, the application range of the forming technology is expanded, meanwhile, the adaptability of the technology is optimized, and the manufacturing cost is reduced.

The utility model provides a wire structure. The wire structure comprises a first dielectric layer; the seed layer is arranged on the first dielectric layer; the conductive trace is arranged on the upper surface, deviating from the first dielectric layer, of the seed layer; and the second dielectric layer covers the conductive trace and is in contact with the upper surface of the seed layer. In the prior art, in the wet etching process of a seed layer, an etching solution etches a conductive trace at the same time, so that the conductive trace is thinned, and the bending strength of the conductive trace is easily reduced and even broken, the photoresist is used as a protective layer before etching, the conductive trace is separated from the etching solution, and the conductive trace is prevented from being damaged. Therefore, when the seed layer is etched, the conductive traces are not etched, the conductive traces are prevented from being thinned, the bending strength of the conductive traces is ensured, the normal work of the whole lead structure is ensured, and the problems of open circuit and the like are avoided.

This utility model relates to the technical field of methanol range extenders, and discloses a quick connection and cooling interface device for a methanol range extender. It includes a housing, with a methanol engine mounted on the left side of the inner wall of the housing. A fixing mechanism is mounted on the front side of the outer wall of the methanol engine to prevent components from falling off. Multiple fixing plates are equidistantly fixed to the front side of the outer wall of the methanol engine, and a vibration damping mechanism is mounted at the front end of each fixing plate to reduce the impact of vibration on the components. The fixing mechanism includes fixing plates equidistantly fixed to the front side of the outer wall of the methanol engine. A connector is mounted on the outer wall of the methanol engine. In this utility model, a limiting rod is engaged with the inner wall of the limiting plate to form a stable connection, preventing the inner wall of the interface from thinning due to long-term use, and preventing the connector from loosening and falling off due to vibration during vehicle operation, leading to seal failure.

The utility model relates to the technical field of coal mill, specifically is coal mill nozzle ring, including dynamic ring and static ring, wherein: dynamic ring and static ring adopt up and down installation mode, static ring is located above dynamic ring, and the clearance between both is 5mm, further, the dynamic ring outer wall board is changed to curved arc board from traditional vertical flat plate, and the whole is horn mouth shape, the curved arc board design of dynamic ring effectively reduced the flow resistance of hot air in nozzle ring, and the air volume and air pressure of hot air were strengthened, specifically, the shape of curved arc board makes hot air more smoothly flow when passing through nozzle ring, avoids the problem that hot air flow efficiency reduces because of too big wind resistance in the traditional vertical flat plate design, especially, the thickness of dynamic ring is 12mm, guarantees the structural strength and lightens the overall weight simultaneously, thereby reduces the energy consumption when the equipment runs.

The utility model discloses an eight-pair CAT5E double-shielding network communication cable comprising a sheath layer, the sheath layer is internally provided with eight pairs of core wire cables, the eight pairs of core wire cables are distributed in an inner layer and an outer layer, and an inner layer aluminum-plastic composite belt layer is arranged between the inner layer of core wire cables and the outer layer of core wire cables; three pairs of core wire cables are arranged in the inner layer, and inner layer filling ropes are filled among the three pairs of core wire cables. Five pairs of core wire cables are arranged on the outer layer, and outer layer filling strips are arranged among the five pairs of core wire cables; the core wire cable and the outer filling strip are wrapped by an outer aluminum-plastic composite belt layer, the outer layer of the outer aluminum-plastic composite belt layer is wrapped by a metal braid layer, and the outer layer of the metal braid layer is wrapped by a sheath layer. According to the utility model, through the arrangement of a unique line pair arrangement structure, the problem of easy crosstalk between line pairs of a conventional eight-pair structure is solved, and the design difficulty and the production difficulty are greatly reduced. And the stability of batch production is ensured.

The invention provides environment-friendly vehicle frame part surface rust removal equipment, and relates to the field of polishing and rust removal. The environment-friendly vehicle frame part surface rust removing equipment comprises an adjustable conveying bottom frame, a position changing assembly and a polishing and rust removing assembly, and the position changing assembly is installed on the adjustable conveying bottom frame and can move left and right along the adjustable conveying bottom frame; the polishing and rust removing assembly comprises a bottom beam, a rail, a motor, a side rail, a grinding block set, a transferring set and a reprocessing set, the bottom beam is installed on the displacement assembly and can move front and back along the displacement assembly, the rail is fixed to the bottom of the bottom beam, the motor is fixed to one end of the bottom beam, the side rail is located in the rail and slidably connected with the rail, and an output shaft of the motor is connected with the side rail. According to the environment-friendly vehicle frame part surface rust removal equipment, by arranging the polishing and rust removal assembly, relative to rotary polishing, the inertia is small, the movement amount is extremely easy to control, a vehicle frame is prevented from being polished and thinned, a polishing block can be rapidly recovered to an available state, and the service life is prolonged.

The invention discloses a premature delivery delaying device which comprises a plurality of sectioning rings, and the sectioning rings are sequentially arranged in the circumferential direction to form an annular structure. The premature delivery delaying device further comprises fixing rings and connecting pieces, each sectioning ring comprises an upper ring body and a lower ring body, the fixing rings are arranged on the lower ring bodies in a sleeving mode, and the connecting pieces are connected to every two adjacent upper ring bodies. The premature delivery delaying device further comprises a locking structure for locking the positions of the upper ring bodies and the connecting piece, and the locking structure is at least arranged between the connecting piece and one upper ring body connected with the connecting piece. The locking structure is provided with a plurality of locking positions, when the locking structure is located at different locking positions, the inner diameters of the annular structures formed by the upper ring bodies are different, and the locking structure can be automatically adjusted according to cerclage force so that the locking structure can be located at the different locking positions. The device can effectively prevent cervical dilation and thinning and prevent or delay early delivery, can avoid amniotic sac inflammation, and can prevent cerclage force from increasing along with the weight of an infant to damage the cervix and cause discomfort and pain of a patient.

[Problem] The present invention aims to provide an aqueous solution for manufacturing electronic devices capable of suppressing defects. [Solution] An aqueous solution for manufacturing electronic devices, comprising: an acid (A); a surfactant (B); and a solvent (C); wherein the acid (A) has a pKa (H2O) of 3.0 or less, and the number of carbon atoms contained in one molecule of the acid (A) is 0 to 8; the surfactant (B) substantially contains no ethylene oxide repeating units and no propylene oxide repeating units; and the solvent (C) contains water (C-1). The aqueous solution for manufacturing electronic devices is a high-performance material that can be used in nanotechnology processes for semiconductor device manufacturing, for example, in manufacturing processes for semiconductor devices for controlling liquid crystals, quantum dots, or OLED displays formed on a substrate.

The utility model provides a kind of bag making heat sealing knife mould, and heat sealing knife mould includes heat sealing knife body base plate, plane heat sealing area and arrangement groove, heating body arrangement groove is set in heat sealing knife body base plate bottom, built-in heating body, plane heat sealing area is placed in heat sealing knife body base plate top center, edge setting chamfer structure, including first heat sealing area, second heat sealing area and third heat sealing area, three gradient settings, height decreases;Still provide a kind of soft plastic packaging bag of anti-sealing edge cracking type, including bag body, opening and anti-cracking heat sealing edge, to solve the short board of performance that there is obvious at heat sealing edge of conventional soft plastic packaging bag, and further produce a series of problems and defects, such as bag sealing edge easy cracking, bag not impact resistant, not drop resistant.

The water dispenser comprises a door body and a machine body with a cavity, the machine body is provided with an upper pivoting part and a lower pivoting part, the upper pivoting part is provided with an upper pivoting part, the lower pivoting part is provided with a lower pivoting part, and the door body is rotationally connected with the upper pivoting part and the lower pivoting part so as to open or cover the cavity. The upper pivoting part and the lower pivoting part both protrude out of the machine body in the transverse direction so that the door body can suspend on the outer side of the machine body, a door cover is arranged on the inner side of the door body, one end of the door cover is fixedly connected with the door body, the other end of the door cover retracts and extends inwards, and therefore the door body can be closed when the door body covers the cavity. And a handle digging gap is formed between the door cover and the machine body. According to the water dispenser, the door body is supported through the upper pivoting piece and the lower pivoting piece which are arranged on the machine body, the design that the door body is supported through a door frame in the prior art is omitted, and therefore the transverse space, occupied by the door frame, of the machine body is saved, and the machine body can be light and thin.

The utility model provides an electric vehicle parking station which is characterized in that the electric vehicle parking station comprises a storage cavity on the upper layer and a parking chamber on the lower layer, the storage cavity and the parking chamber are separated by a partition plate, and the storage cavity is used for storing granular fire extinguishing materials; the separating plate is provided with a discharging opening, an opening and closing device is installed at the discharging opening and comprises a sliding plate provided with a through hole, the sliding plate is located above the separating plate, the sliding plate can be driven by a driving device to move on the separating plate, and therefore the through hole and the discharging opening are aligned or staggered. Therefore, the discharging opening is opened or closed; when a fire occurs in the parking chamber, the opening and closing device opens the discharging opening, and the granular fire extinguishing materials fall into the parking chamber to extinguish fire. Once a fire occurs, the granular fire extinguishing material can be released to extinguish the fire by opening the discharging opening, and the granular fire extinguishing material can be put back into the storage cavity or a new granular fire extinguishing material can be supplemented after the fire is extinguished, so that the fire extinguishing efficiency is high, and the granular fire extinguishing material can be repeatedly used.

This invention belongs to the field of microwave absorbing materials technology, specifically relating to a carbon composite microwave absorbing material and its preparation method. The invention uses degummed waste filter cotton as a carbon source, employing an impregnation method to impregnate the pretreated waste filter cotton in magnetic metal salts, followed by heat treatment to obtain the composite microwave absorbing material. The carbon skeleton formed by the heat-treated waste filter cotton constitutes a conductive network in the composite material, exhibiting good dielectric loss. Magnetic metal elements and their alloys possess high saturation magnetization, providing magnetic loss in the composite material. The synergistic effect of dielectric and magnetic losses solves the problem of poor impedance matching in single carbon materials. The preparation process of this invention is simple and pollution-free, solving the environmental pollution problems caused by traditional waste filter cotton treatment methods, and is easy for large-scale production. The resulting composite microwave absorbing material is lightweight, efficient, has good impedance matching, and possesses excellent microwave absorption performance.

The invention relates to the technical field of photovoltaic packaging materials, in particular to an EPE three-layer co-extrusion adhesive film and a preparation method and application thereof. The EPE three-layer co-extrusion adhesive film comprises a first EVA layer, a POE layer and a second EVA layer which are arranged in sequence; the first EVA layer and the second EVA layer respectively and independently comprise EVA resin, modified EVA resin, a compatilizer, a cross-linking agent, an assistant cross-linking agent, a silane coupling agent and an antioxidant; the POE layer comprises modified POE resin, a compatilizer, a cross-linking agent, an assistant cross-linking agent, a silane coupling agent and an antioxidant; the modified EVA resin comprises at least two kinds of EVA resin grafted and modified by polybutadiene with different molecular weights; the modified POE resin comprises at least two kinds of POE resin grafted and modified by polybutadiene with different vinyl contents. According to the EPE three-layer co-extrusion adhesive film disclosed by the invention, the auxiliaries are not easy to migrate, and meanwhile, the EPE three-layer co-extrusion adhesive film has high adhesive property, high crosslinking degree, high water resistance, aging resistance and the like.

This utility model discloses a fluorinated pipe umbrella-shaped rotating flange flaring device, belonging to the field of pipe flaring devices. The device includes an umbrella-shaped control mechanism, an umbrella-shaped flaring head component, an umbrella-shaped rotating mechanism, and a control cabinet. The umbrella-shaped control mechanism and the umbrella-shaped rotating mechanism are connected to the control cabinet via wiring harnesses. The umbrella-shaped control mechanism controls the opening and closing of the umbrella-shaped flaring head component, and the umbrella-shaped rotating mechanism drives the umbrella-shaped flaring head component to rotate. This utility model, through the design of the umbrella-shaped control mechanism, umbrella-shaped flaring head component, and umbrella-shaped rotating mechanism, solves the problem that existing pipe flaring devices cause thinning or cracking of the fluorinated pipe wall due to compression, leading to decreased sealing performance and increased leakage risk. It improves the finished product performance of fluorinated pipe flaring without compromising the performance of the outer wall of the fluorinated pipe.

The present invention relates to a pinhole inspection device using a punch and a die, which is capable of inspecting defects or damages, particularly pinholes or microcracks, caused by forming, immediately after forming is completed using a punch, and a pinhole inspection method using the same.

The invention provides a preparation method and application of a heterojunction cell substrate, and the method comprises the following steps: sequentially depositing an intrinsic passivation layer, a first doping layer and a silicon nitride layer on the first surface of an initial substrate, and then carrying out the annealing treatment to obtain an intermediate substrate, the refractive index of the silicon nitride layer being 1.5-2; a texturing agent is used for texturing the middle substrate, after a textured surface is formed on the second surface of the middle substrate, first cleaning treatment is carried out, then silicon nitride layer removal treatment and oxide layer removal treatment are carried out on the middle substrate, and the second surface and the first surface are oppositely arranged; and sequentially depositing an intrinsic passivation layer and a second doping layer on the surface, far away from the initial substrate, of the suede to form the heterojunction cell substrate. According to the method, the back surface of the heterojunction cell substrate has excellent flatness, meanwhile, the fragment rate of the heterojunction cell substrate is reduced, the interface passivation effect is enhanced through silicon nitride annealing and hydrogen injection, and then the short-circuit current, the open-circuit voltage, the filling factor and the photoelectric conversion efficiency of the heterojunction solar cell are improved.

The utility model discloses a scour-resistant elbow for a furnace, which comprises an elbow inner wall inner cambered surface, an elbow inner wall outer cambered surface and a step-shaped tooth-shaped step arranged on the elbow inner wall outer cambered surface on an elbow medium inlet side, and the tooth surface of the step-shaped tooth-shaped step forms an included angle of 90 degrees. Wherein one tooth surface of the step-shaped tooth-shaped step is perpendicular to the flowing direction of a medium entering the elbow, the other tooth surface of the step-shaped tooth-shaped step is parallel to the flowing direction of the medium entering the elbow, and the tooth-shaped step is in a crescent shape in the circumferential direction of the pipe wall of the elbow. The sizes of the tooth-shaped steps are in smooth transition from small to large and then from large to small on the circumference of the pipe wall of the elbow within the range of 0-180 degrees, the size of the tooth-shaped steps is the largest when the angle is 90 degrees, and the effective wall thickness of the pipe wall outside the stepped tooth-shaped steps on the inner wall of the elbow is larger than or equal to the design wall thickness of the elbow. The effective thickness of the elbow is prevented from being thinned, the thinning rate of the effective thickness of the elbow by a medium can be effectively reduced, and the service life of the elbow is prolonged.

The present invention discloses a display panel and a display device. The display panel includes a backlight module, a color film substrate, a liquid crystal layer and an array substrate; the color film substrate and the array substrate are arranged opposite to each other, the array substrate is located on the side of the color film substrate away from the backlight module, and the liquid crystal layer is located between the color film substrate and the array substrate; the display panel includes a display area and a non-display area arranged around the display area; the display panel also includes an antenna unit, the antenna unit includes a radiation electrode, the radiation electrode is arranged on the array substrate, and the radiation electrode is located in the non-display area. The above technical solution can reduce the difficulty of integrating the antenna unit, simplify the display panel preparation process, and realize the thinness of the display panel; in addition, while ensuring the normal radiation receiving performance of the radiation electrode and improving the antenna gain effect, the existence of the radiation electrode will not affect the normal display brightness of the display area, which is conducive to improving the display effect of the display panel.

The invention relates to the technical field of hot galvanizing, in particular to an insulator iron cap surface zinc liquid homogenizing device which comprises two side plates with mounting holes, one side of each side plate is fixedly connected with a track frame, and a container assembly which automatically adjusts the closing state of an opening according to the height of a galvanized part so as to seal the galvanized part is mounted between the two track frames. One side of the container assembly communicates with a gas conveying assembly which continuously inputs high-temperature air into the container assembly to slow down the curing speed of the zinc liquid, and a discharging assembly used for placing a galvanized part is installed in the container assembly; the container assembly comprises two hinged half frames, and the tops of the half frames are fixedly connected with balancing weights. The problems that the process of transferring zinc liquid on the surface of an existing insulator iron cap into a container is complex, the time for transferring the zinc liquid into the container is difficult to shorten, the possibility that the zinc liquid is solidified before being homogenized is reduced, and it is guaranteed that the zinc liquid is homogenized on the insulator iron cap are solved.

The invention belongs to the technical field of oil exploitation, and particularly relates to a foaming agent for nitrogen foam fracturing and a preparation method and application thereof. The preparation method comprises the following steps: (1) sequentially adding trimethylolpropane tri (3-aziridinyl propionate), an organic solvent and 1-amino-3, 6, 9, 12, 15, 18-hexaoxaheneicosan-21-acid into a reactor, adjusting the pH value to 2-3 by using hydrochloric acid, and carrying out heat preservation reaction; (2) adding alkyl halide into the reactor, adjusting the pH value to 8-9 by using sodium hydroxide, carrying out heat preservation reaction, irregularly detecting the pH value in the reaction process, and maintaining the pH value to 8-9 by using sodium hydroxide; and (3) carrying out reduced pressure distillation on the mixed solution in the step (2) to obtain a viscous solid, and drying to obtain the foaming agent for nitrogen foam fracturing. The foaming agent for nitrogen foam fracturing has the advantages of good foaming and foam stabilizing effects and large liquid carrying capacity.

The present application relates to a corrosion-resistant material and its preparation method and application. Among them, the preparation method of the corrosion-resistant material comprises: in a protective gas atmosphere, using plasma spraying, spraying NbMoTaW-based refractory high entropy alloy powder on the surface of the substrate to prepare a coating; the temperature of the substrate is 180°C to 200°C; the spraying distance of the plasma spraying is 80mm to 100mm, the spraying voltage is 78V to 80V, and the spraying current is 500A to 550A. Under the above-mentioned spraying parameters, the flying speed and temperature distribution of the high entropy alloy particles are relatively uniform, and the temperature of the flying particles is relatively high, ensuring the full melting of the high entropy alloy powder. During the spraying process, the temperature and flying speed of the flying particles are relatively high, which ensures that the particles hit the surface of the substrate at a high speed in a molten or semi-molten state, and evenly spread, cool and solidify on the surface of the substrate, stacking layer by layer, and then forming a refractory high entropy alloy coating with a thicker thickness and better corrosion resistance, so as to obtain a corrosion-resistant material with better corrosion resistance.

The invention discloses a metering extrusion film forming method and a metering extrusion film forming device. The metering extrusion film forming method comprises the steps that a feeding box is provided, the feeding box is filled with pole piece material powder, and the feeding box is provided with a discharging channel; a material receiving surface is provided, and a gap M is formed between the material receiving surface and the discharging channel; and performing ultrasonic vibration extrusion on the pole piece material powder by using an ultrasonic vibration head, so that the pole piece material powder is extruded to the material receiving surface from the discharging channel, and the pole piece material powder forms a film on the material receiving surface. By means of the ultrasonic vibration extrusion effect of the ultrasonic vibration head, pole piece material powder can be compacted in a vibration mode and extruded out of the discharging channel, and after being extruded out, the pole piece material powder reaches the material receiving face and can form a film on the material receiving face. By controlling the gap M between the material receiving surface and the discharging channel, the film forming thickness can be controlled, the accurate adjustment of the film forming thickness of the pole piece material powder is realized, and the control accuracy of the film forming thickness is improved. On the other hand, the situation that an extrusion roller is adopted for thinning the material powder film subsequently is avoided, and the manufacturing efficiency of the dry-method electrode is improved.

This invention provides an integral forming apparatus and method for a corrugated, irregularly shaped thin-walled structure. The integral forming apparatus includes a spoke plate, a core mold, multiple petal molds, and an actuating ring. The core mold has multiple corrugated forming grooves along its circumference. The multiple petal molds are rotatably connected to the spoke plate and are spaced apart along the circumference of the spoke plate. Each petal mold has a boss that matches the shape of the forming groove. The actuating ring is sleeved on the outer periphery of the multiple petal molds and can move axially along the core mold, driving the multiple petal molds to converge towards the forming grooves, thereby forming the blank located between the petal molds and the forming grooves into a corrugated, irregularly shaped thin-walled structure. This invention features a simple process, good integrity, high forming accuracy, suitability for most commonly used thermoforming equipment, fast forming speed, fewer steps, and can greatly improve production efficiency.

The invention discloses a manicure ornament and an ornament, and relates to the field of ornaments.The manicure ornament comprises a decoration assembly and a wearing assembly, the decoration assembly comprises a nail piece, and a groove for containing manicure oil is formed in the decoration side of the nail piece; the wearing assembly comprises a first wearing ring, the first wearing ring is connected with the tail end of the nail tip, an included angle is formed between the first wearing ring and the nail tip, and the first wearing ring can be used for being arranged on a finger in a sleeving mode so that the nail tip can be attached to the nail in a covering mode; wherein the first wearing ring can rotate relative to the nail tip, so that the first wearing ring can also be sleeved on a button, a key chain or an ear hole; the decoration assembly further comprises a fixing ring, the connecting end of the fixing ring is connected with the tail end of the nail piece and the first wearing ring, and an included angle is formed between the fixing ring and the nail piece. Therefore, nails are decorated, the problems of embarrassing period of nail painting and inconvenience in doing can be solved, the nail oil is prevented from being tightly adhered to the nails, the harm to human health is avoided, and in addition, the nail oil can be used as decorations such as clothing decorations, luggage decorations, key decorations and ear decorations.