11results about How to "Avoid coating" patented technology

The application relates to an automatic solder coating machine and relates to the technical field of solder coating; the automatic solder coating machine comprises a workbench and a solder bucket used for storing solder; a clamping piece and a coating assembly are arranged on the workbench; the clamping piece is used for clamping a carrier; the coating assembly comprises a first lifting piece; the first lifting piece is used for inserting the carrier into the solder bucket; the application has the effects of improving solder coating efficiency, optimizing coating uniformity and reducing solder waste caused by excessive coating.

The invention provides a resistor disc and a preparation method thereof, and a lightning arrester. The preparation method provided by the invention comprises the following steps: A) mixing and grinding a ceramic raw material, water and an adhesive to obtain a ceramic insulating coating; wherein the ceramic raw material comprises the following components in percentage by mass: 70-90% of zinc oxide; 2%-4% of bismuth oxide; 4%-15% of antimony oxide; 3%-8% of an insulating filler; b) coating the ceramic insulating paint on the side surface of the resistor disc; and C) co-firing the resistor disc with the ceramic insulating coating obtained in the step B) to obtain the resistor disc. According to the preparation method disclosed by the invention, the insulativity and weather resistance of the resistor disc are improved, the preparation process is simplified, the production cycle and energy consumption are reduced, the production efficiency is favorably improved, and the adopted raw materials are environment-friendly and accord with the requirement of the current society on environmental protection.

The invention discloses a sulfonated bio-based polyamide diaphragm as well as a preparation method and application thereof, and belongs to the technical field of lithium battery, and the sulfonated bio-based polyamide diaphragm is prepared by the following steps: firstly, preparing a furyl polyamide solution, then mixing the obtained furyl polyamide solution with a sulfonating agent and a cyclic sulfone solvent, and sulfonating the polyamide solution to obtain the sulfonated bio-based polyamide diaphragm. And carrying out sulfonation reaction on the polyamide solution and a sulfonating agent in a sulfonyl-containing annular sulfone solvent to obtain the sulfonic polyamide slurry. And melting the sulfonic polyamide slurry through an extruder to form a film, stretching, and carrying out heat treatment to obtain the sulfonated bio-based polyamide diaphragm. Furyl polyamide is a polymer and has a furan ring, so that the diaphragm prepared by the wet method is high in mechanical strength and high in thermal stability. The diaphragm is prepared by integral forming, so that the problem of coating shedding or poor binding force with the base diaphragm when the diaphragm is coated is solved, and the mechanical strength and the thermal stability of the diaphragm are higher.

The utility model discloses a kind of soldering flux feeding devices for inductance production, it is related to electronic component production equipment technical field.The utility model includes heating groove, pivot rod and liquid level control component, the opening of heating groove is upward, the both ends of pivot rod are rotatably installed in the inboard of heating groove, pivot rod outside lateral array fixed sleeve is connected with a group of axle sleeve, a group of sponge strips is arranged in the lateral array of axle sleeve outer wall, and liquid level control component is arranged in the outside one end of heating groove and is communicated with heating groove.The utility model adds soldering flux to heating groove, and inductance is stretched to heating groove by grabbing arm, so that the pin surface of inductance is contacted with sponge strip, so that the pin surface of inductance is coated with soldering flux, to avoid inductance side being coated with soldering flux;The liquid level height of soldering flux in heating groove is controlled by liquid level control component, so that sponge strip can absorb soldering flux in heating groove after being rotated downward.

The utility model provides a gas inlet structure and a crystal growing furnace, and relates to the technical field of silicon carbide crystal growing, the gas inlet structure provided by the utility model comprises a gas inlet pipe and a light transmitting mirror, the gas inlet pipe is provided with a main gas inlet channel and an auxiliary gas inlet channel which are independently arranged, and the main gas inlet channel and the auxiliary gas inlet channel extend along the axial direction of the gas inlet pipe; the light transmitting mirror is installed on the air inlet pipe and located at one end of the auxiliary air inlet channel. The gas inlet structure provided by the utility model can ensure that gas is more uniformly distributed in the production cavity, and gas entering from the auxiliary gas inlet channel can also prevent ash from depositing on the light transmitting mirror; the air inlet function of the air inlet pipe, the auxiliary monitoring function serving as a monitoring channel, the anti-coating function of preventing silicon carbide steam from coating a light transmitting mirror and the blowing function of preventing slag ash and dust from contaminating the light transmitting mirror are organically combined.

Provided are a water-borne luster coating composition and a coated plate which can exhibit a metallic design and in which coating film defects are prevented. A water-borne luster coating composition comprising a cellulose ester derivative, a cellulose nanofiber, and a scaly pigment, wherein an amount of a solid contained in the water-borne luster coating composition is 0.1% by mass or more and 12% by mass or less. A coated plate comprising an article to be coated and a luster coating film, wherein the luster coating film is formed of the water-borne luster coating composition.

The utility model relates to monitoring equipment technical field discloses a kind of monitoring equipment support and monitoring equipment, including installation rail, installation cavity is opened in the bottom of installation rail, the inside rotation of installation cavity is installed with reciprocating screw rod, the outer wall of reciprocating screw rod is connected with thread sleeve, the bottom end of thread sleeve is fixedly installed with mounting plate, the bottom end of mounting plate is rotatably installed with gear, the bottom end of gear is fixedly installed with mounting bracket, and monitoring camera is installed on mounting bracket, the back of installation rail bottom end is fixedly installed with extension plate, the utility model is rotated by motor drive reciprocating screw rod, while thread sleeve is linearly moved behind screw rod, mounting plate bottom gear is engaged with rack, drives mounting bracket and monitoring camera synchronous rotation 180 °, realizes the compound motion of translation and rotation, ensures lens accurate alignment shower head and hair dryer, to realize the automatic cleaning of monitoring camera surface.

The invention provides a microgravity fluid shaping curved surface optical lens manufacturing device and method, and belongs to the fields of optics, spacecraft on-orbit manufacturing and the like. The whole device is composed of a material pretreatment module, a feeding control module, a microgravity environment simulation module and a photocuring module. The core technical point of the method is that fluid forms a required ultra-smooth continuous curved surface under different boundary conditions through fluid surface tension driving under a microgravity condition, and then net-size rapid forming of the curved surface optical lens is realized through an in-situ curing technology. The curved-surface optical lens prepared by the invention has the remarkable advantages of high surface smoothness, simple manufacturing process, low cost, short period and high surface shape design flexibility, and can be used for manufacturing an oversized optical lens in a space microgravity environment, thereby breaking through the size bottleneck of ground manufacturing emission of a large optical lens.

The invention relates to the technical field of circuit board resistance welding processing, and discloses a circuit board ultrathin resistance welding layer process based on a micro-nano technology, which comprises the following steps: S1, cleaning a circuit board to ensure that the surface is free of oil stain, dust and other pollutants so as to ensure good adhesive force between a resistance welding layer and a substrate; and S2, coating the cleaned and dried circuit board with a solder mask layer by using a coating machine. The circuit board ultra-thin solder mask layer process based on the micro-nano technology can effectively solve the problems that in the prior art, when solder mask layer ink printing is conducted on the surface of a circuit board, due to the fact that an effective fixing means is lacked, the circuit board is in a free state, the circuit board generates slight displacement when printing equipment runs, and the printing efficiency is poor. The problems that solder mask ink is difficult to be accurately attached to a preset position due to the fact that the solder mask ink is difficult to be accurately attached to the preset position, design elements such as a bonding pad and a circuit deviate, the manufacturing quality of a circuit board is affected badly, the defective rate and production cost of products are increased, and production efficiency is reduced are solved.

This invention relates to auxiliary equipment and construction methods for installing prefabricated composite slabs, belonging to the field of composite slab installation. Its purpose is to replace manual straightening for the joining of composite slabs. It includes a traction device, a bottom guide bracket, a gap-filling and adhesion mechanism, and a positioning outer plate fastened to the ends of the composite slabs. The bottom guide bracket includes an electric push rod, a mounting plate, and a support plate. The support plate extends longitudinally and is mounted on the positioning outer plate via an electric push rod that extends laterally. The gap-filling and adhesion mechanism includes a detection-type spraying component and a supply component that provides filler to the detection-type spraying component. The detection-type spraying component is located on the front side of the positioning outer plate. Two sets of traction devices are symmetrically installed at the left and right ends of the positioning outer plate. This avoids the drawbacks of manual straightening, improving safety while ensuring the quality of the joining. The gap-filling and adhesion mechanism fills the gaps with adhesive, reinforcing the joints of the composite slabs and eliminating the need for workers to apply adhesive with a hand-held glue gun, thus saving labor.