18 results about "Composite grid" patented technology

This invention relates to the field of image processing technology and discloses a method for target 3D reconstruction and automated model generation. The method includes: acquiring multi-view original point cloud data of the target object, and obtaining a simplified point cloud dataset through voxel filtering and downsampling; dividing the data into smooth regions and sharp edge feature sets based on curvature characteristics, performing smooth fitting and edge-preserving reconstruction respectively, and then generating a composite mesh model through vertex merging and mesh stitching; performing topological structure analysis on the model, detecting and optimizing non-manifold elements and topological holes to obtain an initial mesh model; parametrically mapping and automatically unfolding the texture of the model surface geometric manifold characteristics, and fusing and binding the unfolded texture map with the initial mesh model to finally complete the 3D reconstruction of the target object; this invention can improve the efficiency of target 3D reconstruction and automated model generation.

The utility model discloses a sponge composite grid sanding block structure which comprises two sponge layers which are arranged in a mutually stacked mode, first grids are arranged on the inner sides of the two sponge layers which are stacked, second grids are arranged on the outer sides of the two sponge layers, the two sponge layers are connected through a flexible connecting part with flexibility and elasticity, and the two sponge layers are connected through a first grid and a second grid. The flexible connecting part enables the two sponge layers to be turned over relatively; the sides, away from the flexible connecting part, of the two sponge layers are each provided with two sets of turnover positioning structures, the flexible connecting part is a flexible rubber strip, and each turnover positioning structure comprises a positioning table arranged on the corresponding sponge layer. By arranging the two sponge layers capable of being turned over oppositely and the grids on the inner side and the outer side, cyclic utilization of the grinding face is achieved, the replacement frequency is reduced, the service life is prolonged, cost is reduced, meanwhile, it is guaranteed that the sponge layers are turned over accurately in place through the turning positioning structure, the structure is stable during grinding, grinding accuracy and stability are guaranteed, and the workpiece machining quality is improved.

The invention discloses a composite material grid foam sandwich non-dismantling formwork for cast-in-place concrete and an assembling method of the composite material grid foam sandwich non-dismantling formwork, and relates to the field of cast-in-place concrete building structure formworks. The manufacturing method of the non-dismantling formwork specifically comprises the following steps that firstly, a grid-shaped reinforced fiber material is soaked in resin and then vertically laid in an up-down layered mode; a preformed composite material grid fiberboard is obtained; the foam sandwich board is placed between the two composite material grid fiber boards, a C-shaped clamping groove is pre-buried in the axial direction of the section of one side of the foam sandwich board to form a concave section, the section of the other side of the foam sandwich board is prefabricated into a convex section capable of being inserted into the C-shaped clamping groove, and the composite material grid fiber foam sandwich board is obtained; and finally, the composite material grid fiber foam sandwich plate is placed in a vacuum device to be subjected to thermocuring treatment, and the composite material grid foam sandwich non-dismantling formwork is obtained. According to the composite material grid foam sandwich non-dismantling formwork for cast-in-place concrete, the composite material grid foam sandwich non-dismantling formwork is combined with the opposite-pulling assembly, and efficient forming and integration of a cast-in-place concrete member are achieved.

This invention relates to a process for preparing battery grid lines using graphene electroplating with copper, belonging to the field of solar energy electroplating technology. The method includes: texturing, diffusion, etching, passivation, and anti-reflection film deposition on a silicon wafer to form a battery substrate; depositing a seed layer on the surface of the battery and completing patterning to form grid trenches; preparing an electroplating solution containing copper sulfate pentahydrate, sulfuric acid, chloride ions, brightener, leveling agent, inhibitor, and graphene; confirming through chemical analysis that the concentrations and aggregate sizes of graphene and polyvinylpyrrolidone are within the process range; setting a stepped current and plating time according to the plating area of ​​the battery and the number of copper tanks to be plated; and, under the assistance of a pulse rectifier and ultrasound, co-depositing graphene particles and copper atoms to form composite grid lines with a graphene content of 0.1–10 wt%; finally, removing the mask and seed layer to obtain the finished product.

This invention discloses a symmetrical non-rotational composite material oblique mesh structure suitable for automated molding, comprising an upper frame, a lower frame, and bidirectional helical ribs; the upper frame, lower frame, and bidirectional helical ribs are integrally molded structures, and the structural materials used for the upper frame, lower frame, and bidirectional helical ribs are composite materials; the bidirectional helical ribs include two mutually symmetrical ribs, and the center line of the outer contour surface of each rib is a helix with equal pitch, equal helix angle, or geodesic. This invention further discloses methods for determining the center line of ribs used in various typical symmetrical non-rotational structures applied in aerospace engineering. The oblique mesh structure of this invention is rationally designed, lightweight, and suitable for automated mass production.

The application discloses a kind of high-precision explosion-proof touch glass of integrated differential mutual capacitance collection circuit, it relates to the technical field of industrial explosion-proof touch and high-precision signal acquisition, the touch glass is sequentially stacked by multiple functional layers, high-precision high-sensitivity touch collection circuit is integrated below touch layer, edge is set with electromagnetic shielding structure, collection circuit uses differential signal acquisition, high-precision amplification filtering and intrinsic safety type control and power supply design, touch layer uses nanowire composite grid structure, the application is coupled with the matching design of structure and circuit, can actively compensate the signal attenuation caused by explosion-proof structure, while strictly meet the intrinsic safety explosion-proof requirement, preparation method includes tempering, laminated composite, circuit integration, encapsulation solidification and comprehensive performance detection etc.Step.The product of the application has high touch precision, strong anti-interference, good environmental adaptability, and is suitable for man-machine interaction equipment in explosive hazardous environment such as coal mine, chemical industry etc..

The invention relates to a heterojunction battery and a preparation method thereof. The heterojunction battery comprises a battery piece, a first electrode and a second electrode, the silk-screen grid lines are arranged on the surfaces of the battery pieces, the silk-screen grid lines comprise copper grid lines and composite grid lines, and the composite grid lines are of conductive anti-oxidation layer coated copper structures; and the transparent conductive layer at least covers the copper grid lines, and the transparent conductive layer does not cover the composite grid lines. Under the condition that no antioxidant is added, the transparent conductive layer is added to cover the copper grid lines, the copper grid lines can be prevented from being oxidized, and the adhesive force of the copper grid lines is improved.

The invention relates to the technical field of protective glass, in particular to protective glass for traffic lights, which comprises a glass layer, a light protective layer and an electromagnetic shielding protective layer, and the glass layer comprises a composite glass body, an AR layer and an AG layer from inside to outside. Through collaborative optimization of the three-layer structure and internal layering, the comprehensive performance of the protective glass is remarkably improved, the impact resistance and temperature difference resistance are enhanced through the composite structure of the glass layer, the light-transmitting fidelity is improved through the low-reflection design of the AR layer, and the anti-dazzle and self-cleaning dual functions are achieved through the AG layer; the light protection layer can accurately filter ultraviolet light and infrared light, and the temperature-sensitive design adapts to the environment temperature change; the adhesive force of the electromagnetic shielding layer is enhanced through the micro-convex-point adhesive layer, the durability is improved through the anti-corrosion composite grid layer, and the service life is prolonged through the self-repairing anti-scraping layer; the overall structure gives consideration to environmental adaptability, functional stability and maintenance convenience, effectively reduces long-term use cost, and guarantees reliable operation of the traffic signal lamp.

The present application relates to the technical fields of prepreg winding forming, and particularly relates to a composite material grid cylinder forming die, a forming device and a forming method. In order to solve the problems that the existing preparation process relies on the spindle of a machine tool, the fiber winding method is used for preparation, the whole design method is used for the silica gel soft film, and the outside does not have the silica gel soft film matched therewith, and the grid type designability is poor, in the forming device, the spindle is arranged on the support positions of two supports, one end of the spindle is connected with a rotating handle, two support discs are symmetrically arranged on the spindle, the side wall of the disc is a stepped structure composed of a large disc and a small disc, each end of a split type bottom plate is sleeved outside the small disc of one disc, each screw is screwed with a threaded hole after passing through one through hole of each end of the split type bottom plate, a cylinder soft film is sleeved outside the split type bottom plate, and each soft film B is arranged corresponding to one soft film A. The silica gel soft film increases the designability and replaceability of the grid structure.

The invention discloses a novel hub type connection node structure for a composite material grid structure, which comprises a node disc arranged at a connection node of a steel structure grid, the outer edge of the node disc extends outwards along the disc surface direction of the node disc to form a plurality of first lug plates, and the node disc is coaxially connected with a hub shaft; the fin plates are connected to the plate surface of the node plate and the circumferential surface of the hub shaft, and second lug plates are formed on the fin plates; the inserting plates, the horizontal rods and the web members of the steel structure net rack are made of FRP materials, bearing and inserting grooves are formed in the end faces of the horizontal rods and the web members, one ends of the inserting plates are detachably inserted into the bearing and inserting grooves, third lug plates are formed at the other ends of the inserting plates, and the third lug plates on the horizontal rods are detachably connected to the first lug plates. And the third lug plates on the web members are detachably connected to the second lug plates. The problem that nodes of an existing grid structure are mostly connected through bolt-sphere nodes and are not suitable for the grid structure of the glass fiber reinforced polyurethane composite material is solved.

The application discloses a satellite super-large-size composite material grid structure forming method, which comprises the following steps: preparing a combined layering mold; connecting the combined layering mold with a support tool; preparing a unidirectional fiber cloth roll; cutting the unidirectional fiber cloth roll into pre-impregnated narrow strips with a preset width; using the combined layering mold and a special support to lay up the pre-impregnated narrow strips with the preset width into a shaped product blank; performing normal-temperature pre-pressing treatment on the product blank; and adopting hot-press tank curing forming on the product blank after the normal-temperature pre-pressing treatment, so that the satellite super-large-size composite material grid structure is obtained after demolding. The application solves the problem of overall forming of a cylindrical grid structure with super-large size, fixed grid geometric parameters and multiple types of rib strips.

The invention discloses a lightweight train body co-molded by a composite material and a mold and a molding method thereof, and relates to the technical field of rail transit, and the train body structure comprises a 3D printing chopped fiber reinforced thermoplastic polymer core layer, a continuous fiber reinforced resin matrix composite material skeleton, a composite material outer skin and a composite material inner skin. The 3D printing chopped fiber reinforced thermoplastic composite material polymer has the advantages of high strength, light weight, high temperature resistance, complex molding and the like; the 3D printing dot matrix core layer is combined with the traditional composite material grating and the composite material skin, so that the overall weight of the train is further reduced, the use of various connecting pieces is reduced, the workload of train body assembly is reduced, and the economical efficiency of train operation is improved.

The invention discloses a fiber laying head for laying a composite material grid rib structure, which comprises a rack, a gun changing disc female head is arranged at one end of the rack, an actuating head is arranged at the other end of the rack, an electrical control system is arranged in the rack, and a creel and a tension control system are arranged on the outer side of the rack. The gun changing disc female head is in butt joint with a gun changing disc male head mounted at the tail end of a machine tool of the fiber placement machine, and the fiber placement head is hung on the fiber placement machine; the creel and tension control system is used for storing a spirally wound composite prepreg barrel and maintaining constant tension in the laying process, and the actuating head receives the prepreg led out by the creel and tension control system, cuts off, clamps, drags and compacts the prepreg, and finally lays the prepreg in a grid rib mold groove. And the electrical control system communicates with the numerical control system of the fiber placement machine and controls the machine tool of the fiber placement machine and the placement action. The fiber placement head is a special fiber placement head in which the compression roller can be pressed into the groove, short-length fiber placement can be performed, high-viscosity and low-rigidity prepreg can be adapted, and the fiber placement head has a grid rib profile positioning function.

The application discloses a mold and a method for manufacturing a composite material grid cone in a fiber winding process, and belongs to the field of composite material molds, and solves the manufacturing problem of the existing grid cone. The mold comprises a conical mold body, an upper steering nail ring, a lower steering nail ring, an upper flange, a lower flange, a rotating shaft and a silica gel soft film, the rotating shaft passes through the upper flange, the conical mold body and the lower flange in sequence, the conical mold body, the steering nail ring, the upper flange and the lower flange are coaxially matched, the upper steering nail ring is connected to the conical mold body through the upper flange, the lower steering nail ring is directly connected with the conical mold body, the lower flange is directly connected with the conical mold body, the silica gel mold is spliced from one or more plane soft films and is distributed on the outer surface of the conical mold body in the circumferential direction, the surface of the silica gel mold is provided with orthogonal grid grooves, and the grid grooves are composed of axial and circumferential grid strips. The mold is mainly used for manufacturing a conical structure by using fibers or prepreg tapes.

This application discloses a digital demodulation method, apparatus, device, and storage medium, relating to the field of digital communication. The method includes: acquiring a filtered signal of a transmitted signal after passing through a filter, and performing phase differential on the filtered signal; extracting the obtained differential phase and determining the signal to be demodulated based on the differential phase; determining the target differential phase of the filtered signal according to the current communication environment, and constructing a composite grid based on the target differential phase; determining sub-grids based on the composite grid, and determining the branch path metric and total path metric of the signal to be demodulated based on the sub-grids; performing Viterbi demodulation based on the total path metric, and obtaining the demodulation result by backtracking the Viterbi demodulation based on the total path metric. This application constructs a composite grid phase compensation model for GMSK and proposes a composite Viterbi demodulation algorithm for GMSK signals based on differential phase, which can overcome the influence of Doppler frequency offset on demodulation performance and maintain excellent performance even with large frequency offsets.

The application discloses a preparation method of a grid prepreg for preparing a high-thermal-conductivity grid panel, and the method comprises the following steps: obtaining high-thermal-conductivity carbon fiber yarn; and performing winding processing on the high-thermal-conductivity carbon fiber yarn based on a wet winding process to obtain the grid prepreg. The application also discloses a preparation method of a grid prepreg for preparing a grid panel, which comprises the following steps: preparing the grid prepreg based on the preparation method of the grid prepreg for preparing the grid panel; and performing vacuum hot-press forming on the stacked grid prepregs to obtain a high-thermal-conductivity composite grid panel. The application can prepare the high-thermal-conductivity grid panel with excellent thermal conductivity, avoids the risk of defects caused by processing the high-thermal-conductivity carbon fiber, has high material utilization, high automation degree, high preparation efficiency and good process stability. The application further discloses a grid prepreg and a high-thermal-conductivity composite grid panel.

The invention provides a lead-acid storage battery continuous punching grid alloy, and relates to the field of grid processing. The continuous punching grid alloy of the lead-acid storage battery comprises a grid base material formed by a lead-based alloy material added with an additive of which the total mass is one percent of that of which the malleability is improved, blanking, punching, cutting off and extending redundant materials of the grid base material, fixing one end of the blanked grid base material, extending the grid base material towards one side far away from the fixed end, and forming the continuous punching grid alloy of the lead-acid storage battery. And the interval of the grating part is increased. According to the continuous punching grid alloy for the lead-acid storage battery, the grid base material is firstly processed into a rough shape, and then the grid part is extruded in an extrusion extension mode, so that under the condition that the grid base material is thinned by extrusion, a frame with a relatively wide thickness is still kept on the edge of the whole shape, and the whole strength can be kept; compared with a processing mode of a net pulling type plate grid base material, the strength of the device can be ensured while the pore area is increased.

The invention discloses a composite grid line diaphragm for solar cell laser transfer printing and a forming method, and belongs to the field of solar cells. In order to solve the problems that an existing solar cell is poor in preparation performance and large in raw material consumption, the invention provides a composite grid line membrane for solar cell laser transfer printing, and the composite grid line membrane comprises a base membrane layer and a stripping layer arranged on the base membrane layer; the silver paste layer is arranged on the stripping layer; the silver paste layer is a three-dimensional grid line, and the structure of the three-dimensional grid line corresponds to the structure of a front electrode grid line of the solar cell; the three-dimensional grid lines comprise a plurality of auxiliary grid lines which are arranged in parallel and a plurality of main grid lines which are arranged perpendicular to the auxiliary grid lines; wherein the line width of the auxiliary grid line is gradually increased along the direction close to the stripping layer. According to the invention, by preforming the front electrode grid line of the solar cell, the waste of silver paste in a non-grid line area is avoided, and the consumption of the silver paste can be saved by 30%-50%; secondly, the auxiliary grid line is of a structure with a narrow top and a wide bottom, and short-circuit current and conversion efficiency are improved.