37results about How to "Guaranteed Density" patented technology

The invention belongs to the technical field of manufacturing and detection of composite material parts, and particularly relates to a device and a method for manufacturing defects of a reference block for nondestructive testing of a carbon fiber part. The punches are integrated through the stretchable supporting rod, the stamping rod and the tool rotating disc, rapid replacement of the punches is achieved, meanwhile, stamping-wrapping integration is achieved, the outline precision of the cutting edge of a polytetrafluoroethylene film is guaranteed by pressing the punches downwards, the polytetrafluoroethylene film directly falls into tinfoil above a wrapping pressing nozzle after a partition plate is opened, and the production efficiency is improved. The wrapping pressing nozzle is controlled by the knob, and the tightening degree can be adjusted according to different diameters, so that the defect precision and the defect quality can be ensured by adopting the tool structure. By the adoption of the method, hard mistake proofing in the combined process is optimized, the efficiency of manufacturing the defects, especially the small-diameter defects, is improved, meanwhile, the shape follow-up degree and the wrapping compactness of the tinfoil wrapping polytetrafluoroethylene film are guaranteed, the internal quality of the defects is improved, and the manufacturing stability is improved.

The invention provides a coupler offset monitoring and control method suitable for underwater wireless charging, and the method comprises the steps: designing the structure of a repeating coil according to a coupler, and determining that the current of the repeating coil can represent the mutual inductance coefficient change of the repeating coil and a secondary side coil; utilizing a BP neural network to obtain a resolving matrix of the coupler offset and the relay coil current; in the charging process, according to the collected current value, the offset direction and offset of the primary side coil and the secondary side coil are determined through a resolving matrix, a control mechanism of the primary side coil is controlled to be aligned with the secondary side coil, and therefore it is guaranteed that the coupler keeps accurate coupling. According to the relay coil, the coupling coefficient can be enhanced, the electromagnetic field transmission distance can be expanded, passive anti-offset can be achieved, current parameters in the array relay coil can serve as monitoring objects, offset and deflection detection can be achieved through coil array current sampling, active anti-offset is conducted, and the underwater wireless charging efficiency and stability are improved.

The invention discloses a visual identification detection system based on rice seedlings, relates to the field of visual identification detection of rice seedlings, and aims to overcome the defects of a rice transplanter operation detection method, assist a driver in mastering rice seedling leakage information, reduce manual monitoring on a rice transplanter and the like by a rice seedling transplanting and seedling leakage detection product. An MCU control board is arranged on the surface of the computing mainboard, a power switch and a function switch are embedded into the left end of the computing mainboard, the MCU control board is connected with an RDK X3 through a UART asynchronous transceiving transmitter, the MCU control board is connected with a GPIO small lamp board, an RTK board is arranged on the surface of the computing mainboard, and the RDK X3 is connected with a 4G module through a USB. The seedling leakage monitoring system of the rice transplanter can improve the agricultural production efficiency, reduce the agricultural production cost, improve the agricultural product quality and promote the agricultural intelligent development, and is of great significance to agricultural modernization.

The utility model relates to a heat insulation material coating tool for a small-volume cryogenic low-temperature tank body. The heat insulation material coating tool comprises a lower supporting table, a tank body profiling seat, a hinge and a side supporting plate, the hinges comprise a first hinge, a second hinge, a third hinge and a fourth hinge; the tank body profiling seat is composed of a U-shaped left side assembly, a U-shaped right side assembly and a U-shaped bottom assembly, the left side assembly is rotationally connected with the bottom assembly through a first hinge, the right side assembly is rotationally connected with the bottom assembly through a second hinge, and the bottom assembly is fixedly connected with the lower supporting table; the left side assembly, the right side assembly and the bottom assembly form a continuous and smooth arc surface larger than 1 / 2. The side supporting plates comprise the plate-shaped left supporting plate and the plate-shaped right supporting plate, the left supporting plate is rotationally connected with the outer wall of the left assembly through a third hinge, and the right supporting plate is rotationally connected with the outer wall of the right assembly through a fourth hinge. According to the utility model, the surface of the heat insulation material on the small-volume tank body after being coated is smooth and clean.

The utility model relates to the technical field of electronic cigarettes, and discloses a ceramic atomization core heating wire which comprises a heating wire body and a grabbing foot. The two ends of the heating wire are electrically connected with the two electrodes respectively. At least two heating wires are wound on the ceramic atomizing core side by side at a set interval in a snake-shaped or bow-shaped manner, and the two heating wires are densely distributed to form a heating area; and the electrode and the heating wire in the heating area are fixed on the ceramic atomizing core through grabbing feet. The at least two heating wires are arranged on the ceramic atomizing core side by side at the set interval, so that the heating uniformity is ensured, the atomizing efficiency and quality are improved, the fine taste and plumpness are improved, local heat accumulation can be effectively avoided, and carbon deposition generated by insufficient combustion is reduced; the coiled heating wire is fixed through the grabbing feet, the position of the heating wire is stabilized, the risk that the heating wire shifts or is separated from the atomization core is reduced, and therefore heating uniformity is kept.

The invention discloses a bonded neodymium-iron-boron magnet and a preparation method and a degradation method thereof, belongs to the technical field of magnetic materials, and overcomes the defects that a degradable bonded neodymium-iron-boron magnet in the prior art is poor in heat resistance and cannot work under a high-temperature condition. The bonded neodymium-iron-boron magnet is prepared from neodymium-iron-boron magnetic powder, aluminum oxide, a binder, a curing agent and a lubricant. The mass ratio of the neodymium iron boron magnetic powder to the aluminum oxide is (9-15): 1; the binder is a degradable polymer and accounts for 3%-3.5% of the total mass of the neodymium iron boron magnetic powder and the aluminum oxide. The heat resistance of the degradable bonded neodymium-iron-boron magnet is improved, and meanwhile the magnetic performance is guaranteed.

The invention discloses a black vehicle-oriented real-time point cloud fusion detection method, system and device, and a medium. The method comprises the following steps: step 1, obtaining point cloud data through a laser radar; 2, scanning the point cloud data, marking the continuous point cloud blocks with the reflection intensity of 0 as unlicensed car identifiers, and storing the unlicensed car identifiers in point cloud attribute positions; step 3, performing dual-thread compensation, performing clustering operation on the point cloud data set with the unlicensed car identifier by using DBSCAN, and performing imaging processing on a clustering operation result by using Point Pill to obtain a three-dimensional image model; forcibly outputting an unlicensed vehicle detection frame image according to an image processing result or improving the confidence coefficient as an unlicensed vehicle compensation confidence coefficient, and preferentially adopting a model result; when the two conditions do not belong to the above two conditions, performing weighted fusion on the operation result; and step 4, fusing operation results in the step 3 into a complete three-dimensional frame image. Therefore, the problem of missing detection is solved, and the detection rate and detection efficiency are improved.

The invention relates to the technical field of full-degradable fiberboards, in particular to a full-degradable fiberboard which comprises a full-degradable fiberboard body. The composite material is prepared from the following components in parts by weight: 20-30 parts of plant fibers, 12-17 parts of starch-based resin, 6-10 parts of polylactic acid, 4-9 parts of polyhydroxyalkanoate, 4-8 parts of cellulose nanofibers, 3-7 parts of terpene resin, 2-5 parts of an anti-aging agent, 4-8 parts of cellulose decomposition bacteria, 5-11 parts of rosin, 3-6 parts of citric acid and 2-4 parts of malic acid. An anti-aging agent is added in the manufacturing process of the fiberboard, so that the manufactured fiberboard has good anti-aging capacity and improved use durability after being applied to the insole and being continuously used or cleaned, a fiberboard wet blank is obtained through the procedures of pulping and the like in cooperation with a papermaking technology, and then the fiberboard wet blank is prepared through the methods of squeezing and the like. The density of the fiberboard can be guaranteed, the fiberboard is made of environment-friendly materials, the fiberboard can be decomposed after being discarded, and harm to the environment is reduced.

The application provides a building energy-saving material composite forming system and forming method, and mainly relates to the field of new building materials. The building energy-saving material composite forming system and forming method comprises a forming machine, the forming machine comprises a forming frame, the middle part of an operation table is a forming die cavity, an auxiliary mechanism is arranged on one side of the forming machine, a filling mechanism is arranged on the other side of the forming machine, the filling mechanism comprises a filling slide rail, a filling cylinder and a filling hopper, the auxiliary mechanism comprises an auxiliary slide rail, an auxiliary cylinder and an auxiliary die cavity, a partition plate is slidably arranged in the auxiliary die cavity, when the lifting cylinder is in an extended state, the partition plate exits the forming die cavity and the bottom of the partition plate is coplanar with the bottom surface of the auxiliary die cavity, when the lifting cylinder is in a contracted state, the partition plate falls into the forming die cavity and the bottom of the partition plate is in contact with the bottom surface of the forming die cavity. The application has the beneficial effects that the application can complete automatic feeding and forming of the composite double-layer material heat preservation brick, and improves the brick forming efficiency and forming quality.

The utility model discloses a wheat seed and fertilizer integrated moisture-resistant seeding machine which comprises a box body, supports are fixedly arranged on the two sides of the box body respectively, a bottom plate is installed below the supports, a plurality of fertilizer applying mechanisms are fixedly arranged on the front side of the bottom of the box body, each fertilizer applying mechanism comprises a fertilizer discharging device, and a fertilizer conveying pipe is fixedly arranged at the bottom of each fertilizer discharging device. A plurality of seeding mechanisms are fixedly arranged on the rear side of the bottom of the box body, each seeding mechanism comprises a seed metering device, a seed metering pipe is fixedly arranged at the bottom of each seed metering device, the bottom end of each seed metering pipe penetrates through the bottom plate, and mounting plates are fixedly arranged on the two sides of the bottom of the bottom plate respectively; according to the utility model, multiple functions of fertilization, seeding, shallow rotary tillage, soil covering and the like are integrated, so that the tedious operation of the links of ploughing, fertilization, seeding and the like in the traditional seeding process is reduced, the labor intensity and the operation cost are reduced, the operation efficiency is improved, and the time, manpower and material resources are saved.

This invention relates to the field of industrial control technology, and more specifically, to a method for precise pressure adjustment in the injection molding holding process based on iterative learning control. The method includes: acquiring a reference holding pressure curve, an actual feedback pressure sequence, and injection molding holding control commands for the current holding stage; calculating thermal hysteresis characteristics characterizing changes in physical state; calculating a thermal drift evolution index characterizing the thermal drift rate; generating a nonlinear adaptive gain adjustment factor constrained within a safe range; and calculating and updating the injection molding holding control commands for the next holding stage. This invention more accurately reflects the comprehensive impact of changes in physical state, scientifically assesses the thermal drift rate and the difference between current and historical data, dynamically adapts to thermal drift to ensure control stability under different thermal conditions, effectively solves the problems of holding pressure overshoot, oscillation, and slow response, improves the dimensional consistency of injection molded products and the control accuracy of the holding process, and ensures production quality and efficiency.

The application discloses a kind of chopped carbon fiber reinforced fluorine-containing resin composite material and preparation method and application, belong to composite material preparation technical field, the application includes: to chopped carbon fiber is sequentially carried out surface activation treatment, homogeneity coating treatment and chemical bonding treatment, to be gradually structured interface bonding layer on the surface of chopped carbon fiber;The treated chopped carbon fiber is mixed with fluorine-containing resin matrix, and extrusion forming is obtained, and composite material is obtained.The application is sequentially carried out surface activation, homogeneity coating and the three-step synergistic modification of chemical bonding, first activation provides reaction site, then pass through homogeneity coating and eliminate the interface energy difference between fiber and matrix, finally pass through chemical bonding and lock interface, and gradually structured interface layer of strong combination, effectively solve the problem that chopped carbon fiber and fluorine-containing resin interface compatibility is poor, and easily peeling, realize the significant improvement of the mechanical properties of composite material.

The invention relates to the technical field of resin processing and preparation, and discloses bromine-containing epoxy resin for an insulating plate, a preparation method of the bromine-containing epoxy resin and a preparation method of the insulating plate. The molar ratio of the epoxy chloropropane to the tetrabromobisphenol A is controlled to be 1: (0.46-0.54), and the mass of the organic solvent is controlled to be 21%-30% of the mass of the tetrabromobisphenol A. Compared with the traditional molar ratio control range of the epoxy chloropropane and the tetrabromobisphenol A and the mass control percentage range of the traditional organic solvent, the method is more accurate; in the step S103, the mass fraction of alkali in the alkali liquor material is controlled to be 35-45%, the temperature of the cyclization reaction is controlled to be 95-110 DEG C, the time of the cyclization reaction is controlled to be 1.1-1.4 h, the latitude of each reaction is greatly restrained, the relative molecular mass of the bromine-containing epoxy resin is greatly guaranteed, the density of the bromine-containing epoxy resin is guaranteed, and the effect of improving the performance is achieved; the gummosis risk of the bromine-containing epoxy resin is reduced to a great extent, and the dimensional stability and the mechanical property of a finished product of a subsequent insulating plate are guaranteed.

The invention discloses a household paper density on-line monitoring device, and aims to solve the technical problem that in the prior art, when paper pulp is detected in paper production, the paper density and the use effect of papermaking are affected due to the fact that flowing paper pulp has a certain depth and a certain error exists when a sensor monitors the paper pulp. The paper density online monitoring equipment comprises a paper pulp mixing box, a mounting rack is mounted on the outer surface of the paper pulp mixing box, a negative pressure machine is mounted on the top surface of the paper pulp mixing box in a penetrating manner, a suction pipe is mounted on the outer surface of the paper pulp mixing box in a penetrating manner, and an electric push rod is mounted on the top surface of the paper pulp mixing box through a bracket; by means of the design, automatic monitoring of paper pulp liquid data is achieved, multi-layer sampling, mixing and monitoring of paper pulp are achieved, the accuracy of the paper pulp data is guaranteed, and the density of produced paper is guaranteed.

The invention discloses a bipolar current collector with double copper layers and a preparation method thereof, and relates to the field of battery current collectors, the current collector takes an aluminum foil as a substrate, and a compact first copper layer prepared by magnetron sputtering and a thickened second copper layer prepared by electroplating are sequentially arranged on one side of the substrate. The first copper layer is prepared by adopting an intermittent deposition method, a pause interval is set in the deposition process, and substrate heating and low-energy ion beam bombardment are assisted, so that the compactness and the bonding strength of a plating layer are remarkably improved; and the second copper layer is prepared by adopting a pulse electroplating method, so that the non-porous and uniform structure is further ensured. Through a sputtering and electroplating composite process, a copper-aluminum interface which is high in binding force and free of defects is successfully constructed, electrolyte permeation is effectively blocked, and generation of lithium-aluminum alloy is prevented, so that the use safety of the bipolar current collector is greatly improved, and the cycle life of a battery is greatly prolonged.

The invention discloses a vertical charge transfer type three-dimensional photoelectric device with a multilayer structure, and belongs to the field of photoelectric detectors and memories. The vertical charge transfer type three-dimensional photoelectric device with the multilayer structure comprises a charge reading layer, a charge transfer layer and a charge storage layer which are formed in a semiconductor substrate and are sequentially arranged in the vertical direction. Wherein the charge reading layer is a semiconductor device which has a reading function of converting a charge signal into a voltage or current signal and a reset function of resetting the charge signal to an initial state, the charge transfer layer has a function of transferring the charge signal along a vertical direction, and the charge storage layer has a function of storing one or more charge packets. By applying proper voltage to different layers, the detection unit can realize light sensing, transferring, reading and resetting. According to the device, the photoelectric detection function is converted from a plane to a three-dimensional mode, and multispectral detection, photomultiplication, data storage and other applications can be carried out.

The application discloses a magnetron sputtering coating machine for large-area uniform coating, which comprises a machine shell, the upper surface of the machine shell is fixedly provided with guide rods, the outer surfaces of the two groups of guide rods are slidingly provided with sealing covers, the lower surfaces of the sealing covers are fixedly connected with corrugated washers, so that the sealing covers can block the upper ends of the sealing cavities through the corrugated washers by sliding along the guide rods, the sealing cavities are formed in the machine shell by being fixedly provided with two groups of sealing plates, the magnetron sputtering mechanisms are rotatably arranged in the sealing covers, so that the sealing covers can drive the magnetron sputtering mechanisms to be in communication with the sealing cavities while being perpendicular to the supporting mechanisms. Through the design of the magnetron sputtering mechanisms and the supporting mechanisms, the sealing cavities can be opened and closed and the supporting mechanisms can be lifted and lowered in the linear module linkage, and the multi-dimensional movement of the magnetron sputtering mechanisms and the cooperation of the vacuum and gas systems are combined, so that the efficient and uniform coating of large-area substrates is finally realized.

The utility model provides a kind of clamp magnetic ring device and winding machine, wherein, clamp magnetic ring device includes mounting seat and be set on mounting seat and be used for the first clamp magnetic ring component for clamping magnetic ring circumferential two ends;First clamp magnetic ring component includes a pair of magnetic ring clamp;Magnetic ring clamp includes first abutment and a pair of second abutment, and the width of second abutment on magnetic ring axial end face is 0.3mm-20mm.The utility model provides a kind of clamp magnetic ring device by a pair of magnetic ring clamp limit winding area, ensure that unit wire is wound in specified area, to ensure that the density and tightness of coil reach design requirement;First clamp magnetic ring component is applicable to different inductance processing by controlling the width of second abutment, when winding single-coil inductance, try to reduce the space of magnetic ring winding position occupied by magnetic ring clamp, reduce the influence of magnetic ring clamp to wire winding, to ensure the uniformity and consistency of coil winding on magnetic ring, to improve winding quality.

The application discloses an atmospheric pressure plasma jet device for continuous treatment of grains, which comprises a shell, one end of the shell is provided with a feeding port, the other end is provided with a discharging port and an air outlet; a grain conveying and impurity removing unit, an atmospheric pressure plasma jet unit and a grain collecting unit are sequentially arranged in the shell; the atmospheric pressure plasma jet unit comprises two atmospheric pressure plasma jet devices which are identical in structure and can alternately operate, the top of the atmospheric pressure plasma jet unit is communicated with the outside, and a conveying belt is arranged below the two atmospheric pressure plasma jet devices; one end of the grain conveying and impurity removing unit is connected with the bottom discharging end of the feeding port, the other end is connected with one end of the conveying belt, and the other end of the conveying belt is connected with the discharging port. The application has reasonable structure, and can effectively solve the technical problems that the existing device is not uniform and stable in plasma discharge, is complicated in operation, is poor in treatment safety and cannot realize integrated continuous treatment.

This invention relates to the field of high-temperature protective coating technology, specifically disclosing a marine corrosion-resistant metal bonding layer and its preparation method. The metal bonding layer prepared by this invention is dense and uniform, and shows no corrosion or discoloration in acidic salt spray tests. A ceramic surface layer is prepared on the metal bonding layer, and the resulting thermal barrier coating remains intact and does not peel off under combined acidic salt spray and high-temperature combustion gas thermal shock tests, effectively improving the coating's thermo-mechanical coupling performance and making it more suitable for use in aero-engines in marine environments.

The invention discloses a soft magnetic composite material, a preparation method and application, the soft magnetic composite material comprises first powder, second powder, third powder and auxiliary materials, and the first powder comprises at least one of FeSiBNbCu, FeSiBMoCu and FeSiBVCu; the powder II and the powder III comprise at least one of alloy Fe-Si-Cr, Fe-Ni, Fe-Si, Fe-Si-Al, nanocrystalline powder or amorphous powder; the auxiliary material comprises at least one of a passivating agent, an insulating agent and a lubricating agent; the average particle size of the first powder is 20-30 microns, the average particle size of the second powder is smaller than 20 microns, and the average particle size of the third powder is smaller than or equal to 5 microns. According to the invention, through multi-particle-size compounding, a plurality of powder materials with different particle sizes and auxiliary materials are mixed according to a specific sequence, stirred and dried, so that the soft magnetic composite material with stable structure, high mechanical strength and high density can be obtained, and the saturation magnetization characteristic of a molded inductor product is improved.

The invention discloses a titanium diboride reinforced boron carbide-based bulletproof ceramic and a preparation method and application thereof, and relates to the technical field of bulletproof metal ceramics. The preparation method of the titanium diboride reinforced boron carbide-based bulletproof ceramic disclosed in the invention is as follows: 10-16wt% titanium diboride, 4-19wt% silicon carbide, 0.5-3wt% tungsten powder and 1-5wt% titanium powder are added to a 62-82wt% boron carbide matrix, mixed evenly, ball milled, and the dried boron carbide mixture is placed in a sintering furnace, heated to 700-900°C under vacuum conditions, then filled with inert gas, heated to 1600-1800°C at 30-50MPa under inert gas protection, sintered by spark plasma, and naturally cooled to room temperature. The titanium diboride reinforced boron carbide-based bulletproof ceramic provided by the present invention has high hardness, high strength, high toughness, is not easy to break, and its preparation method is simple and easy to operate. It can be applied to bulletproof plug plates, has excellent anti-bullet performance and anti-bending performance, and can improve the protective performance of the bulletproof plug plates.

This invention discloses a double-through-structure bimetallic composite material, its preparation method, and its application. The composite material comprises a stainless steel porous framework and an aluminum-based composite material filler; the aluminum-based composite material is uniformly filled within the stainless steel porous framework structure; the aluminum-based composite material comprises AlSi. X Mg (0 ≤ x ≤ 10) and B4C. The composite material of this invention consists of spherical AlSi... X This composite material is prepared by mixing Mg (0 ≤ x ≤ 10) alloy powder and B4C powder in a specific ratio and then sintering. It exhibits excellent energy absorption properties, high strength, and impact resistance, making it suitable for applications in aerospace, automotive, and protective equipment. The production method is simple, with a short production cycle and high efficiency. Furthermore, this material significantly improves the deformation resistance and impact resistance of traditional stainless steel and aluminum alloys under impact conditions, thereby broadening its application range in industrial fields.

The invention relates to the field of rectification raffinate recovery, in particular to a recovery device for rectification raffinate in tetrachloroethylene production, which comprises a lap joint base station and a waste gas collection box detachably mounted on the edge of one side of the top surface of the lap joint base station, the spraying tank is detachably mounted on the top surface of the lap-joint base and located in the middle, and the backflow mixing box is detachably mounted on the top surface of the lap-joint base and located on the edge of the other side. An alkaline solution is sprayed to the center position of the spraying tank layer by layer in cooperation with the multiple circular ring spraying rings, triple water curtains can be formed in the spraying tank through spraying of the multiple circular ring spraying rings, and a large amount of water vapor can be diffused out due to formation of the water curtains; the alkaline solution and the alkaline water vapor in each layer of water curtain can be tightly mixed with the acidic gas, so that acidic substances in the acidic waste gas are absorbed and neutralized by using sodium hydroxide or calcium hydroxide in the alkaline solution, and the effect of purifying the waste gas is achieved.

The application discloses a kind of water conservancy construction geotechnical sampling device and method, it is related to soil detection sampling technical field, including base, lifting mechanism, sampling execution mechanism;Sampling execution mechanism includes sampling column, drive assembly and inlay strip, sampling jaw;Drive assembly is used to drive sampling jaw swing;Inlay strip can be moved to outside relative to sampling jaw, to extrude soil at the edge of sampling jaw to outside displacement.The application in the process of jaw convergence, adjacent permanent magnet on inlay strip attract each other, drive inlay strip to move to outside.This action will be extruded soil at the edge of jaw to outside shear, displacement, so that disturbed soil is located at the outside of sampling jaw.Finally, the sample left in the inside of sampling jaw is substantially not subjected to lateral extrusion force, so as to maintain the original density, porosity and permeability of soil, ensure the reliability of detection data, reduce edge soil extrusion, maintain the physical properties of sample as is.

The invention discloses a preparation method of a light-weight low-tensile high-modulus polyester industrial yarn, which comprises the following steps of: tackifying a high-viscosity polyester chip by a solid-phase tackifying device, melting and extruding by a screw extruder, entering a spinning manifold, distributing the melt in the spinning manifold by a spinning component, and pressing into a porous spinneret plate to form a tow, sequentially cooling, oiling, drafting, heat setting and winding to obtain the low-stretch high-modulus polyester industrial yarn. The intrinsic viscosity of the high-viscosity polyester chip is 1.10-1.16 dL / g, the melting point is 257-265 DEG C, the specification of the chip is 2.35 + / -0.50 g / 100, the number of holes of a spinneret plate is 280f, the hole pitch of the spinneret plate is 0.96 cm, and the hole diameter is 0.8-0.99 mm. The industrial yarn produced by the method shows excellent characteristics of light weight, low stretching and high modulus, and completely meets the requirements of high-end rubber framework materials such as radial tires and the like on high-performance fibers.

The utility model relates to the technical field of plastic processing, and discloses a plastic production compression device which comprises a compression box, a compression cavity is formed in the compression box, a feed pipe is embedded in the top of the compression box corresponding to the compression cavity, and a discharge port is formed in the bottom end of the compression box corresponding to the compression cavity. According to the plastic production compression device, a plastic recovery part is added into the compression box through the feeding pipe, a gate plate is used for blocking a discharging opening, a first hydraulic rod extends to drive a compression plate to move rightwards, the purpose of compressing the plastic part is achieved, in the compression process, a second hydraulic rod is controlled in advance to extend, and the state that a pricking needle penetrates into a needle hole is kept; in the process that the compression plate is used for compression, the pricking needles are used for punching the surfaces of the plastic parts, then the pricking needles are retracted, the damage degree of the plastic parts is improved, and therefore liquid in the plastic parts can flow out conveniently, the proportion of water occupying the compression parts after compression is reduced, and the dripping leakage situation in the follow-up transfer process is reduced.

The invention provides a non-settling and non-precipitation colored electrophoretic coating and a preparation method thereof, and belongs to the technical field of electrophoretic coatings. The invention discloses a non-settling and non-precipitation colored electrophoretic coating which comprises the following components in parts by weight: 30-45 parts of waterborne polyurethane resin, 8-12 parts of polyether polyol, 2-4 parts of zinc dihydrogen phosphate, 5-20 parts of filler, 1-2.5 parts of a catalyst, 1-3 parts of a phthalate coupling agent, 8-20 parts of color paste and 5-30 parts of deionized water. The color paste is prepared from the following components in parts by weight: 15 to 35 parts of modified acrylic resin, 10 to 25 parts of azole silane modified pigment, 5 to 10 parts of cardanol polyoxyethylene ether and 20 to 40 parts of deionized water; the invention also provides a preparation method of the colored electrophoretic paint. The colored electrophoretic paint provided by the invention has excellent storage stability, and is free from precipitation; the cured coating has high hardness and high adhesive force, has excellent water resistance, wear resistance, chemical resistance, corrosion resistance and the like, is uniform in color, and prolongs the service life of the colored electrophoretic paint.

The invention discloses an electric buoy liquid level meter, which belongs to the technical field of liquid level meters, and comprises an outer barrel, the top end of the outer barrel is fixedly connected with an assembly barrel, and one side of the assembly barrel is fixedly connected with a Hall sensor; the liquid level detection assembly is assembled between the outer cylinder and the assembly cylinder and used for being matched with the Hall sensor to obtain liquid level information in the outer cylinder; the cleaning assembly is assembled on one side of the outer cylinder, and the cleaning assembly is used for cleaning impurities at the detection end of the liquid level detection assembly; the side, close to the cleaning assembly, of the outer cylinder is provided with an indication opening. According to the electric buoy liquid level meter, through structural cooperation of the cleaning assembly, an adhesion layer on the surface of the buoy is effectively cleaned, so that the balance of the average density and buoyancy of the buoy is guaranteed, an angular displacement signal at the output end of the torque tube is made to be the same as the real liquid level, and the overall measurement precision is guaranteed; the technical problem that the buoy is difficult to clean conveniently is solved.

The application belongs to the technical field of cable welding, and discloses an automatic wire twisting and welding device for a cable head, which comprises a twisting and welding positioning seat, a layered wire twisting assembly is fixedly installed on the inner side of the twisting and welding positioning seat, guide assemblies are fixedly installed on the left side and the right side of the layered wire twisting assembly, a moving assembly is fixedly installed on the back of the two guide assemblies, a wire placing assembly is movably assembled on the top of the moving assembly, a lifting assembly is fixedly installed on the front side of the wire placing assembly, and a circular uniform welding assembly is fixedly installed on the front side of the lifting assembly. Through the circular uniform welding assembly and the rotatable wire placing assembly which cooperate with each other, the guide pipe can drive the welding wire to make circular motion around the wire butt joint, the welding head synchronously performs circular heating welding on the wire butt joint, uniform and stable conveying of the welding wire and circular synchronous welding are realized, the welding wire is accurately sent to the wire butt joint, circular and uniform welding of the wire butt joint is realized, welding defects such as blowhole, inclusion, crack and uneven weld are effectively avoided, and the welding quality is improved.