18results about How to "Avoid uneven coating" patented technology

The invention provides a positive electrode material and a preparation method thereof, a positive electrode plate, a secondary battery and an electric device. The positive electrode material comprises an inner core, a first coating layer and a second coating layer, wherein the first coating layer coats at least part of the outer surface of the inner core; the second coating layer coats at least part of the outer surface of the inner core with the first coating layer; the material of the first coating layer comprises a lithium element and an X element; and the material of the second coating layer comprises an X element and a Z element. By forming the first coating layer, residual lithium on the surface of the inner core can be eliminated, meanwhile, the first coating layer has relatively high oxygen vacancy formation energy, oxygen dissolution in the inner core can be reduced or even avoided, side reaction between oxygen and electrolyte caused by oxygen dissolution can be reduced or even avoided, the cycle life of the secondary battery is prolonged, and the safety of the secondary battery is improved; the uniform protective film is formed on the surface of the inner core coated with the first coating layer, so that oxygen is reduced or even prevented from overflowing from the position not coated with the first coating layer.

The utility model relates to the technical field of vacuum coating machine processing, and discloses a clamp for a vacuum coating machine, which comprises a main shell, one side of the main shell is provided with an auxiliary shell, the main shell is internally provided with a plurality of rotating components for enabling a workpiece to rotate and revolve when vacuum coating is carried out, and the auxiliary shell is provided with a plurality of clamping components. A plurality of clamp assemblies used for fixing workpieces for coating are arranged on one side of each rotating assembly; by arranging the rotating assembly, the clamp assembly and the supporting assembly, when vacuum coating is carried out, a servo motor is started to enable a rotating disc to rotate, rotation of the rotating disc is matched with the rotating assembly, the clamp assembly fixed to the rotating assembly can drive a workpiece to rotate and revolve, the workpiece is made to move in the coating process, and then the workpiece is subjected to vacuum coating. The situation that one face of the workpiece makes contact with the spraying position of the coating material for a long time, and consequently coating is uneven is avoided, and the supporting assembly can achieve a certain supporting effect when the workpiece is irregular in appearance and needs additional supporting points.

The present invention discloses a coating thickness detection device, which belongs to the technical field of detection tooling. The coating thickness detection device includes a gripping mechanism, a conveying mechanism, a detection mechanism and a control mechanism. Among them, the gripping mechanism includes a manipulator, the conveying mechanism is arranged below the gripping mechanism, the manipulator can pick up the product placed on the conveying mechanism, the detection mechanism is arranged on one side of the conveying mechanism to detect the coating thickness of the product, and the control mechanism is electrically connected to the detection mechanism. First, the product to be detected is transported to a designated position by the conveying mechanism, and then the product is gripped by the gripping mechanism, and the manipulator places the gripped product on the detection mechanism to detect the coating thickness. The device can detect the thickness of the paint and coating coating of the product to prevent the problem of uneven coating.

The invention discloses a ternary material coating and washing system which comprises an additive grinding device, a coating and washing device and a water temperature control device.The additive grinding device comprises a first storage tank, a sand mill and a second storage tank which are connected in sequence, the sand mill is used for grinding and refining additive particles during wet coating, and the second storage tank is used for storing the additive particles; the second storage tank is provided with a jacket; the coating and washing device comprises a mixer, a screw feeder and a material measuring bin, the feeding speed of materials in the material measuring bin is adjusted through the screw feeder, then the materials enter the mixer, and a liquid flow sensor is arranged at the joint of the second storage tank and the mixer; the water temperature control device comprises a chilled water storage tank and a refrigerator, the chilled water storage tank is connected with the mixer and the second storage tank, and chilled circulating water is introduced into the mixer and the second storage tank. The system disclosed by the invention can be used for coating or washing the ternary material, the investment of equipment is reduced, the washing / coating effect is good, and meanwhile, the production efficiency can be improved.

The invention provides a hard mask plate, a preparation method and an application method thereof, and a coating jig. The hard mask plate comprises a coating through hole; a step structure is arranged on the side wall of the coating through hole, the step structure comprises more than one coating step, and the distance between the tread of the coating step and the second surface is smaller than the distance between the first surface and the second surface. According to the hard mask, the film coating steps are arranged on the side walls of the film coating through holes of the hard mask, so that the problem of non-uniform film coating caused by shielding of the edges of the film coating through holes is avoided, and the mechanical strength of the hard mask is ensured; meanwhile, a clamping microstructure corresponding to the MEMS wafer is arranged on the hard mask plate, so that precise positioning is realized, and the coating position precision is improved; in addition, the height of the connecting area among the plurality of coating through holes in the chip area is set, so that uneven coating caused by shielding of the connecting area among the coating through holes with small intervals is avoided, and the mechanical strength of the connecting area is ensured; and finally, a coating jig is arranged to fasten and position the aligned hard mask plate and MEMS wafer, so that the coating position precision is improved.

This utility model relates to the field of candy coating machine technology, and discloses a tablet candy coating machine, including a housing. A conveying pipe is fixedly connected to the top of the housing, and an adjusting mechanism is fixedly connected to the bottom of the conveying pipe. A cleaning mechanism is sleeved on the outside of the adjusting mechanism. A coating tank is rotatably connected to the front side of the housing. The adjusting mechanism includes a nozzle, the top of which is fixedly connected to the bottom of the conveying pipe. A connecting ring is fixedly connected to the outside of the nozzle. A first filter screen is fixedly connected to the inner wall of the nozzle, and a second filter screen is rotatably connected to the inside of the nozzle. A lever is fixedly connected to the outside of the second filter screen, and a limit block is rotatably connected to the rear side of the lever. This utility model achieves precise control of the spray flow rate, allowing the coating liquid to evenly cover the candy surface, avoiding adhesion due to excessive spraying or uneven coating due to insufficient spraying.

This utility model relates to the field of coating machine technology and discloses a scraper structure for a wall panel cold glue coating machine. It includes a conveyor box, with supports fixedly connected to both sides of the conveyor box. A first lead screw is movably sleeved inside the supports, and a connecting plate is threaded onto the outside of the first lead screw. A horizontal plate is fixedly connected to the lower end of the connecting plate, and an inclined plate is hinged to one side of the horizontal plate. This scraper structure for the wall panel cold glue coating machine allows the scraper to be mounted at the front end of a scraper mounting base. A limiting sleeve restricts the position of the scraper, and a first spring pushes a buckle to engage inside the scraper. This improves the flexibility of the scraper when mounted at the front end of the scraper mounting base. Furthermore, an extension rod is activated to adjust the angle of the scraper and the position of the sliding plate inside the sliding sleeve, thus adjusting the distance between the scraper and the wall panel and improving the accuracy of the scraper in controlling the thickness of the glue scraped off.

This invention discloses a multi-dimensional rotary coating device and control method. The coating device includes: a base with multiple rotating shaft assembly mounting positions and a rotation center on the base, so that the multiple rotating shaft assembly mounting positions can rotate around the rotation center via the base; multiple turntable mechanisms, each turntable mechanism including a rotating shaft assembly and multiple turntable assemblies, each turntable assembly having a stop part and multiple product mounting seats to be coated; multiple turntable assemblies sequentially passing through the rotating shaft assembly, the rotating shaft assembly being mounted on the rotating shaft assembly mounting positions, thereby driving the turntable assemblies to rotate around the rotating shaft assembly; and multiple stop rods, each stop rod corresponding to a rotating shaft assembly mounting position, with the stop part abutting against the stop rod, so that the multiple product mounting seats to be coated can rotate on their own when the turntable assembly rotates. The advantages of this invention are: achieving multi-dimensional rotation; simple structure, achieving rotation without power; modular design, flexible expansion.

The invention belongs to the technical field of nano material modification, and relates to super-hydrophobic nano titanium dioxide as well as a preparation method and application thereof.According to the super-hydrophobic nano titanium dioxide, the use amount of long-chain siloxane, the pH value of deionized water and the ultrasonic reaction time are regulated and controlled, and the long-chain siloxane with more bonding points is used; and the dispersion stability of the modified TiO2 is obviously improved. The long-chain siloxane has good flexibility, the spatial arrangement of chain segments can be adjusted by means of rotation, extension and the like, the intertwining probability among molecules is reduced, and the long-chain siloxane can be fully attached to the surface of titanium dioxide to form a compact hydrophobic layer; the preparation method has the advantages that the problem of non-uniform coating caused by steric hindrance in the modification process is effectively avoided, the interface covering integrity problem generally existing in nano particle surface modification is solved from the molecular level, the silicon hydroxyl density is ultrahigh, efficient and massive interaction with hydroxyl on the surface of nano titanium dioxide can be realized, and the coating stability is improved.

The present invention discloses a glue head device of an electric coating robot; wherein the adapter block fixed base and the movable adapter block mounting seat in the driving coating unit are hinged, and the transmission push plate in the glue head opening and closing driving unit is connected to the movable adapter block mounting seat to drive the movable adapter block mounting seat in the coating unit to open or close; when the glue head opening and closing driving unit drives the movable adapter block mounting seat to close, the bare stranded wire is pressed from one side by the guide roller in the bare stranded wire pre-pressing unit; a glue-evening cavity and a glue-coating cavity are formed in the space enclosed by the closed movable adapter block mounting seat and the upper adapter block fixed base, and an inner bare stranded wire fixed wall is provided between the glue-evening cavity and the glue-coating cavity, and the end face of the glue-coating cavity is a glue outlet nozzle; the glue-evening cavity is connected to an external glue extrusion device through a rubber hose interface. In the present invention, an inner bare stranded wire fixed wall is provided inside the glue-evening cavity, so that the degree of centering at the glue outlet is greatly improved, and the uniformity of glue coating is ensured.

This utility model discloses a lithium battery electrode coating device, including a first mounting frame and a second mounting frame. The first mounting frame has unwinding structures equidistantly arranged, and the second mounting frame has rewinding structures equidistantly arranged. A foil is placed between the unwinding and rewinding structures in the same horizontal direction. A cleaning mechanism, a coating mechanism, and a drying mechanism are sequentially arranged between the two foils, along the direction from the unwinding structure to the collecting structure. The coating mechanism of this utility model adopts a symmetrical arrangement, allowing simultaneous coating of two sets of foils, significantly improving coating efficiency, meeting the needs of large-scale production, and reducing production costs. The guide rollers guide and adhere the foil during coating, ensuring the foil remains flat and stable, guaranteeing uniformity and consistency of the coating, and avoiding uneven coating caused by foil movement or unevenness.

The invention relates to the technical field of gas separation, in particular to a hollow fiber supported carbon molecular sieve composite membrane and a preparation method thereof.The preparation method comprises the steps that firstly, a dianhydride-based polyimide dip-coating solution is prepared, then a balance weight is added to the tail end of a hollow carbon fiber base material, and the top end of the hollow carbon fiber base material is connected with dip-coating equipment; the hollow carbon fiber base material is kept vertical and slowly immersed in the dianhydride-based polyimide dip-coating solution, meanwhile, a protective cover is arranged between a container opening of the dianhydride-based polyimide dip-coating solution and the dip-coating equipment, then the hollow carbon fiber base material obtained after dip-coating is dried, and the balance weight is removed; the hollow fiber supported carbon molecular sieve composite membrane is obtained. The dianhydride-based polyimide dip-coating solution is uniformly distributed on the surface of the hollow fiber base material, and the carbon molecular sieve composite membrane is good in morphology, has excellent gas separation performance and has a wide application prospect in the field of gas separation.

The invention relates to the field of cable processing, in particular to a cable core guiding unit, a cable core coating device and cable manufacturing equipment. The guide wheel mechanism is provided with a guide wheel for guiding the wire core into the coating mold core corresponding to the wire core and a guide wheel bracket for at least supporting the guide wheel; the moving mechanism is used for moving the guide wheel bracket to enable the guide wheel to reach an alignment position, so that the wire core guided by the guide wheel is aligned with the central axis of the coating mold core; the moving mechanism comprises a first moving assembly used for driving the guide wheel support to move front and back in the advancing direction; the second moving assembly is used for driving the guide wheel support to move up and down in the up-down direction perpendicular to the advancing direction. The guide wheel is driven to move in the advancing direction, so that the work of penetrating a wire core into a mold core is conveniently avoided; the guide wheel movement can also be used for reducing the sinking degree of the wire core; the guide wheel is adjusted to accurately align the wire core with the central hole of the die core, thereby avoiding the problem of eccentricity of the wire core.

The utility model relates to the technical field of packaging bag film coating, in particular to a woven packaging bag film coating device which comprises a main body mechanism, a leveling mechanism, a coating mechanism and a winding mechanism, an adjusting knob at the top end of a liquid coating cylinder is adjusted to a proper liquid spraying speed, a first motor drives a first leveling roller to rotate clockwise and drives a second leveling roller to rotate synchronously and reversely, and the coating mechanism is arranged on the main body mechanism. Twisting, tensioning and leveling effects are achieved, uneven film coating at wrinkles is avoided, the product quality is improved, and the machining speed is increased. The surface of the woven packaging bag is uniformly sprayed through a coating liquid spray head of the coating mechanism, part of excessively sprayed parts can be scraped off through a scraper, the scraped coating liquid is collected for secondary utilization through a residual liquid collecting tank, waste of the coating liquid is avoided, the economical efficiency of the device is improved, and the device is suitable for popularization and application. And meanwhile, the energy-saving and environment-friendly effects are also embodied. And through the drying box, the effect of rapidly drying the coated woven packaging bag is achieved, uneven condensation of coating liquid is avoided, and the operation efficiency and the machining quality are improved.

The application discloses a kind of nanometer silicon-based powder material surface modification material and preparation method and application, structure includes from inside to outside nanometer silicon, first silicon oxide layer, second silicon oxide layer, carbon coating layer or oxide coating layer, wherein the size of nanometer silicon is 30-200nm;Wherein the thickness of first silicon oxide layer is 2-4nm, oxygen content is 2-6wt%;Wherein the thickness of second silicon oxide layer is 1-3nm, oxygen content is 1-4wt%;Wherein the carbon content in carbon coating layer is 1-5wt%, the content of oxide in oxide coating layer is 0.1-1wt%.The application utilizes the diffusion and flow characteristics of supercritical carbon dioxide, modifies nanometer silicon-based material, can control superfine powder material surface structure by this modification method, and can realize nanometer silicon-based material surface uniform coating, improve the utilization ability of nanometer silicon-based material.

This utility model belongs to the field of textile technology, specifically a sizing treatment device for carbon fiber precursor fibers. It includes a base, a sizing tank on the top outer wall of the base, and a mounting frame fixedly connected to the top of one side of the sizing tank's outer wall by screws. A U-shaped plate is welded to one end of one side of the mounting frame's outer wall, and symmetrically distributed scraping sponge blocks are adhered to the inner wall of the U-shaped plate. An inclined return groove is welded to one end of the top outer wall of the sizing tank. A drying chamber is located at one end of the sizing tank, and a servo motor is mounted on one side of the drying chamber's outer wall. The output shaft of the servo motor is fixedly connected to a main shaft via a coupling. This utility model effectively solves the problem of uneven sizing coating in traditional sizing processes through the cooperation of the U-shaped plate and the scraping sponge blocks. It employs a drying method combining a rotating frame and an electric heater, ensuring uniform heating of the fibers during rotation, significantly improving drying efficiency and curing quality.

The invention relates to the technical field of lithium ion batteries, in particular to a lithium iron phosphate positive electrode material and a preparation method and application thereof. The preparation method of the lithium iron phosphate positive electrode material comprises the following steps: placing a solid-phase carbon-coated lithium iron phosphate material in an organic gas environment with the relative pressure of more than or equal to 1MPa, and sintering to obtain the lithium iron phosphate positive electrode material. According to the method, the organic gas is cracked and carbonized under the high-temperature and high-pressure environment to generate H2 and elemental carbon, the generated H2 can reduce Fe < 3 + > in the solid-phase carbon-coated lithium iron phosphate material into Fe < 2 + > under high pressure, and meanwhile, the generated elemental carbon is compactly and uniformly adsorbed on the surface of the material, so that a uniform carbon coating layer is formed on the surface of the solid-phase carbon-coated lithium iron phosphate material. According to the method, the Fe < 3 + > reduction effect is improved, meanwhile, the problem that surface carbon coating of solid-phase carbon-coated lithium iron phosphate is not uniform is solved, the electrical resistivity of the prepared lithium iron phosphate material is remarkably reduced, and the electrochemical performance of the lithium iron phosphate material is remarkably improved.

The utility model relates to the field of coating material grooves, in particular to an anilox roller coating material groove which comprises a groove body, mounting plates are fixedly connected to the two ends of the groove body, a roller is mounted between the mounting plates on the two sides, a motor used for driving the roller to rotate is mounted on the mounting plate on one side, and mounting holes are formed in the inner wall of the groove body. A mounting hole is formed in the groove body, a rotor is arranged in the groove body and located in an inner cavity of the mounting hole, a magnetic stirrer is arranged at the bottom of the groove body, a liquid supplementing box is mounted on one side of the groove body, and one end of the liquid supplementing box is connected with a peristaltic pump through a pipeline; the mounting hole is formed in the inner cavity of the tank body, the rotor is placed in the mounting hole, a magnetic field is provided in cooperation with the magnetic stirrer installed at the bottom of the tank body, the rotor can rotate in the inner cavity of the tank body, and the stirring effect on a solution in the tank body is achieved; and the problem of non-uniform coating caused by sedimentation of the solution in the tank body is avoided.