702 results about "Light curing" patented technology

The invention provides a universal light-cured resin preparation method, and relates to the technical field of light-cured resin preparation, and the method comprises the following steps: S1, preparation of microcrystalline wax-LMA; s2, preparing an acrylic resin matrix; s3, adding microcrystalline wax-LMA and other fillers into the acrylic resin matrix, and stirring and mixing; s4, then adding a diluent and other additives, and stirring and mixing; and S5, adding a compound photoinitiator, and stirring and mixing to obtain a finished product. Through the compound photoinitiator, the surface and the deep layer of the material are synchronously cured, and almost no curing stress exists, so that the material can be cured into a sheet layer without any buckling deformation in a sunken DLP (Digital Light Processing); and secondly, the microcrystalline wax-LMA forms a microphase separation structure in the material, so that the shrinkage and cracking of the material are greatly reduced, and the effects of improving the strength and the toughness can be achieved.

The invention discloses a UHPC-foam concrete composite material with a sandwich structure and a preparation method of the UHPC-foam concrete composite material. The composite material comprises two ultra-high performance concrete (UHPC) panel layers, a foam concrete sandwich layer of a negative Poisson's ratio three-dimensional framework prepared through a photocuring three-dimensional printing technology is arranged between the two ultra-high performance concrete (UHPC) panel layers, and the three-dimensional framework is of an inward-concave honeycomb topological structure and has the characteristic of transverse expansion after being pressed; impact stress can be effectively dispersed, and a dual energy dissipation path is formed through a synergistic effect with a porous energy absorption mechanism of the foam concrete. The panel layer and the sandwich layer are combined through a layered pouring process, and an interface is subjected to scabbling treatment so as to enhance the bonding strength. The composite material is superior to a traditional material in the aspects of compressive strength and energy absorption performance, is suitable for the fields of anti-explosion buildings, military protection engineering, frontier defense facilities and the like, and has a wide application prospect.

The invention belongs to the technical field of dressing preparation, and particularly relates to a preparation method of a photocuring methacrylated gelatin hydrogel dressing, which comprises the following steps: step 1, dissolving methacrylated gelatin in a phosphate buffer solution to prepare a methacrylated gelatin solution with the mass concentration of 5-15%; 2, adding a natural photoinitiator into the solution obtained in the step 1, and uniformly stirring and mixing; 3, adding the traditional Chinese medicine active ingredient powder, and stirring until the powder is uniformly dispersed to obtain a mixed solution; and 4, pouring the mixed solution into a mold, and curing and molding under the irradiation of visible light. Chlorophyll or riboflavin is used as a natural photoinitiator and is directly dispersed in a methacrylated gelatin solution in a physical blending mode, a curing light source enables chlorophyll to completely avoid a chemical initiator, meanwhile, the process is simplified into physical stirring to replace nanoparticle synthesis and modification, visible light reduces the risk of tissue burn, the production cost is reduced, and the method is suitable for industrial production. The method is suitable for primary medicine.

The invention relates to the technical field of photo-curing lining hose machining, in particular to a pipeline non-excavation repair photo-curing lining hose, a production device and a production technology.The pipeline non-excavation repair photo-curing lining hose comprises a moving trolley, a lifting mechanism, a rotating mechanism, a large pressing roller and a plurality of small pressing rollers; according to the pipeline trenchless repair photocuring lining hose, the production device and the production process, before rolling, the bottom of the friction roller can be pushed through the stretching mechanism to penetrate out of the bottom of the small pressing roller, then the friction roller is pushed through the swing mechanism to swing in a reciprocating mode, the friction roller is driven to move through the moving trolley, and then the hose can be rubbed. And in the rolling process, the multiple small pressing rollers obliquely roll the hose, bumps are generated during rolling, and the friction roller descends to make contact with the bumps and rub the bumps, so that the resin in the hose is rubbed in the rolling process, and it is further guaranteed that large bubbles can become small bubbles.

The invention relates to the technical field of coatings, and discloses an antibacterial and mildew-proof photocureable coating, which is prepared from the following raw materials in percentage by mass: 49 to 60 percent of photocureable resin, 27 to 40 percent of ultraviolet curing monomer, 3 to 7 percent of photoinitiator and 0 to 15 percent of additive, and the content of the additive is not 0; the additive is an aromatic aldehyde compound. According to the antibacterial and mildew-proof photocureable coating comprising the photocureable resin, the ultraviolet curing monomer, the initiator and the additive, the raw materials are limited in a specific range, and the aromatic aldehyde compound is used as the additive, so that the antibacterial and mildew-proof photocureable coating has a good mildew-proof effect; and the curing strength of the cured coating can be effectively improved.

The invention belongs to the technical field of 3D printing photocuring, and particularly relates to photocuring organic silicon modified polyurethane acrylate resin as well as preparation and application thereof. According to the invention, isophorone diisocyanate is used as a hard segment, polypropylene glycol-1000, dimethylolpropionic acid and dihydroxy-terminated silicone oil are used as soft segments, and the light-cured organic silicon modified polyurethane acrylic resin is synthesized with pentaerythritol triacrylate. By controlling the hydroxyl content in the double-terminal hydroxyl silicone oil and the proportion of the double-terminal hydroxyl silicone oil in a soft segment, the prepared organic silicon modified polyurethane acrylic resin has better flowability and light transmittance and higher double bond content; the organic silicon modified polyurethane acrylic resin, the acryloyl morpholine and the photoinitiator are cured according to a specific proportion, and the obtained elastomer has good mechanical properties and thermal stability and has high printing precision. The synthesized organic silicon modified polyurethane acrylate resin has the potential of replacing a traditional polyurethane acrylate material.

The invention discloses a chamber supporting method and structure based on ultraviolet curing resin and a construction device. The construction method comprises the steps that a flexible ultraviolet light curing resin fiber belt is positioned at the bottom of one side of the inner wall of the chamber, and a fixing anchor rod is driven into the flexible ultraviolet light curing resin fiber belt for fixing; an arch-shaped support is installed, and a telescopic supporting mechanism is installed on the arch-shaped support in a sliding mode; the flexible ultraviolet light curing resin fiber belt is tightly attached to the inner wall of the chamber and is annularly unfolded along the inner wall of the chamber, and telescopic supporting mechanisms are adopted for supporting the flexible ultraviolet light curing resin fiber belt at certain intervals; tearing off a light-proof film on the flexible ultraviolet light curing resin fiber band, and irradiating the flexible ultraviolet light curing resin fiber band with ultraviolet light; and after the flexible ultraviolet light curing resin fiber belt is completely cured, the telescopic supporting mechanism is contracted, the arched support is removed, and construction of the chamber supporting structure is completed. The method has space adaptability, deformation coordination and rapid construction capacity, and efficient and stable supporting of the chamber is achieved.

The invention provides a silicon carbide MOS device chemical plating grid electrode protection method and a process structure, and the protection method comprises the steps: enabling a contact surface of a printing net to be pasted on a target wafer, enabling the position of a mesh to correspond to the position of a grid electrode bonding pad, enabling a net body to accurately cover a region of a source electrode bonding pad, enabling a protection glue to be accurately coated on a designated region instead of the whole surface of the target wafer, and enabling the surface of the target wafer to be protected. Therefore, the use amount of the protective glue is effectively saved and cost is reduced. After gluing is completed, a protective glue layer with a stable structure is formed on the surface of the grid bonding pad through a light curing process, and the protective layer has the peelable characteristic while keeping good adhesive force. And after the chemical plating treatment of the source electrode bonding pad is completed, the protection glue layer can be completely removed without residual pollutants, so that the reliable protection of the grid electrode bonding pad is realized. According to the chemical plating grid protection method for the silicon carbide MOS device, the protection effect and the process stability of the grid region in the chemical plating process are improved by optimizing the selection of the protection material and the coating process.

The invention discloses a glue filling device for an ultraviolet curing glass fiber hose, which belongs to the field of glue filling devices, is used for glue filling, and comprises a rack with a first compression roller, a second compression roller and a third compression roller, and a conveying belt, a seat body mounting plate is arranged at a position between the second compression roller and the first compression roller; the base body mounting plates are located on the two sides of the machine frame and are in sliding connection with the machine frame sliding rails through base body sliding rail bases respectively, the machine frame sliding rails are located on the two sides of the machine frame, the base body sliding rail bases are connected with the base body adjusting oil cylinders through plate bodies, and the base body adjusting oil cylinders are arranged in the conveying direction of the conveying belt. Side rollers and a top roller are respectively mounted on the seat body mounting plate, and the side rollers are positioned on two sides of the top roller. According to the glue filling device, glue filling between the inner film and the outer film in the ultraviolet curing glass fiber hose can be achieved on the premise that the conveying device does not need to be obliquely arranged, the glass fiber cloth layer can be fully soaked in the glue filling between the outer film and the inner film, and therefore the glue filling effect and quality are improved.

The present application relates to an ultraviolet-curing pipeline repair vehicle, which relates to the technical field of pipeline repair equipment. The ultraviolet-curing pipeline repair vehicle includes a vehicle body, a carriage, a generator set, a control cabinet and a storage rack. The carriage is arranged on the vehicle body, and the generator set, the control cabinet and the storage rack are all arranged in the carriage. A plurality of drawer cabinets are arranged in the storage rack, and the drawer cabinets store ultraviolet-curing repair equipment. The plurality of drawer cabinets are sequentially arranged at intervals in the vertical direction. The drawer cabinets are in plug-in fit with the storage rack, and the drawer cabinets are slidably connected to the storage rack along the length direction of the carriage. In the present application, the drawer cabinets can be pulled out of the storage rack along the length direction of the carriage. Then, after the carriage is opened, the drawer cabinets can be taken out outside the carriage, and thus the corresponding ultraviolet-curing repair equipment can be taken out outside the carriage. This can reduce the requirements for the internal space of the carriage for storing, taking out and loading the ultraviolet-curing repair equipment, and is convenient for the staff to take the ultraviolet-curing repair equipment.

The present invention discloses a kind of organosilicon marine antifouling and anticorrosion coating with high adhesion, its preparation method and use, the organosilicon marine antifouling and anticorrosion coating is obtained by coating a composite coating material on the surface of a substrate after light curing; the composite coating material includes dopamine acrylamide, mercapto-modified hexahedral polysilsesquioxane, mercapto polydimethylsiloxane, N-(2,4,6-trichlorophenyl) maleimide, photoinitiator and toluene. The process synthesis conditions provided by the present invention are simple, clean and environmentally friendly, ultraviolet light triggers cross-linking reaction rapidly and effectively, the prepared antifouling and anticorrosion coating has good substrate adhesion, excellent mechanical properties and antifouling and anticorrosion performance, can greatly meet the antifouling performance, substrate adhesion and mechanical strength requirements of organosilicon coatings in marine applications, and has broad application prospects in the field of marine antifouling and anticorrosion coatings.

The application belongs to the technical field of ultraviolet light curing pipeline repair, in particular to an adjusting structure for ultraviolet light curing pipeline repair, which comprises a supporting seat, four slide grooves are arranged in an annular array on the surface of the supporting seat, a supporting leg assembly is rotatably connected in the slide groove and is used for expanding and abutting against the inner wall of the pipeline, a traction rope is connected through the middle part of the supporting seat, the supporting leg assembly comprises a swing arm, the swing arm is hingedly connected to the slide groove through a shaft at one end, and a connecting seat is slidably connected to the other end of the swing arm, the connecting seat and the connecting rod are arranged, when the lining pipeline with variable diameter is adapted, the connecting rod at the bottom of the connecting seat will slide in the movable cavity, the gap between the connecting seat and the end of the swing arm can be adjusted, so that the lining pipeline with different inner diameters can be adapted without changing the deflection angle of the swing arm, the lining pipeline with variable diameter can be adapted, and the position of the ultraviolet lamp tube will not change, which will not affect the curing effect of the ultraviolet lamp tube on the lining pipeline.

The embodiment of the invention relates to the technical field of additive manufacturing, and discloses a 3D printing tree support automatic generation method and system based on an SLA photocuring process, and the method comprises the steps: obtaining a to-be-printed three-dimensional grid model and placement azimuth information; identifying all overhanging areas needing to be supported in the three-dimensional grid model, and calculating the normal direction and the required supporting force of each overhanging point of the overhanging areas; simulating the fluid static pressure of the resin liquid on the supporting structure and the equivalent shrinkage force corresponding to curing shrinkage in the printing process through a pre-constructed mechanical model to obtain the corrected supporting force; performing tree-supported growth simulation by adopting an improved space colonization algorithm to obtain a growth skeleton; and optimizing and verifying the growth skeleton through a multi-objective optimization algorithm, and iteratively optimizing to generate a final tree support structure. According to the embodiment of the invention, an automatic, efficient and reliable tree support generation method is realized.

The utility model relates to the technical field of coupling machines, in particular to an optical module FA double-coupling-table coupling machine which comprises a machine table, a double-station dispensing device, a photocuring mechanism, a visual positioning mechanism, two coupling tables and two coupling devices. The coupling table comprises a positioning carrying table arranged on the machine table, a supporting frame arranged on one side of the positioning carrying table, a base arranged on the other side of the positioning carrying table, a sliding base connected to the base in a sliding mode, a plugging carrying table arranged on the sliding base and a plugging driving mechanism arranged on the base, and the plugging driving mechanism is used for driving the sliding base to be close to or away from the positioning carrying table. A positioning cavity is concavely formed in the top surface of the positioning platform deck, and a mounting cavity is concavely formed in the top surface of the plugging platform deck. The two coupling devices work independently and do not influence each other, the two optical modules FA can be coupled at a time, the coupling efficiency is greatly improved, the coupling qualified rate is detected through the plugging detector in the coupling process, and the coupling quality is greatly improved.

The invention belongs to the technical field of building materials, and particularly relates to a joint mixture for drainage ditch installation and a preparation method thereof, the joint mixture comprises the following raw materials by weight: 35-50 parts of urethane acrylate resin, 20-30 parts of Portland cement, 10-15 parts of fly ash, 5-10 parts of kaolin, 3-6 parts of modified carbon fiber, 0.2-1 part of a photoinitiator, 0.5-2 parts of an organosilicon waterproofing agent, and 4-8 parts of a stabilizer. The modified carbon fiber is added into the joint mixture as a reinforcing phase, so that the mechanical strength and wear resistance of the cured joint mixture can be effectively enhanced. According to the invention, the stabilizer is added into the joint mixture, so that the joint mixture has antioxidant and antibacterial effects. The polyurethane acrylate resin is adopted as the main filler, the photoinitiator is good in stability and can be stored in a dark place after being mixed, the photocuring speed is high, and use is convenient.

The invention relates to the technical field of waterproof coatings, in particular to a photo-initiation cold coating type non-curing rubber asphalt waterproof coating and a preparation method thereof, and the photo-initiation cold coating type non-curing rubber asphalt waterproof coating comprises an asphalt-based main material, a photo-curing agent and epoxy resin; the light curing agent is composed of a photoinitiator, a rubber monomer and a hindered amine light stabilizer, and the photoinitiator comprises a benzothiophene compound; the waterproof coating is in a single-component paste state, can be constructed at normal temperature, and is cured to form a waterproof coating film after being irradiated by ultraviolet rays; according to the technical scheme, a cross-linking system of the light curing agent and the epoxy resin not only keeps the creep deformation and self-healing characteristics of non-cured rubber asphalt, but also improves the heat resistance, acid, alkali and salt resistance and bonding performance of a coating film through a three-dimensional network cross-linking structure, and it is ensured that a waterproof layer adapts to building structure deformation and severe environments for a long time.

The utility model relates to a bendable dental photocuring machine which comprises a machine head and a handle, the machine head comprises a rotary joint and a fixed joint, the rotary joint is rotatably mounted on the fixed joint, the fixed joint is provided with a first inclined plane, the rotary joint is provided with a second inclined plane, and the second inclined plane is attached to the first inclined plane. The first inclined surface and the second inclined surface are circular; the fixed joint is connected with the handle. The rotary joint is provided with a light source. The rotary joint is connected with the fixed joint in a mode that the first inclined plane is attached to the second inclined plane, and the rotary joint rotates around the central point of the first inclined plane, so that the included angle between the axis of the rotary joint and the axis of the fixed joint is changed; therefore, the angle between the direction of light emitted by the dental light curing machine and the axis of the handle is adjustable.

The invention provides an optical system and photocuring 3D printing equipment, and belongs to the technical field of printing equipment. The optical system comprises a plurality of light-emitting assemblies used for emitting light. A plurality of collimation assemblies, wherein one collimation assembly is arranged corresponding to each light emitting assembly; light of each light-emitting assembly penetrates through the collimation assembly and irradiates on a target plane to form an illumination area; the controller is electrically connected with each light-emitting component and is used for independently controlling each light-emitting component; the lighting areas of every two adjacent light-emitting assemblies are at least partially overlapped to form an overlapped area, and the light intensity of the overlapped area is 80%-120% of the light intensity of a non-overlapped area in the lighting areas. Wherein the plurality of light-emitting assemblies are independently controlled by the controller, and compared with a traditional full-on and full-off light source setting mode, light interference can be reduced, and the contrast ratio can be improved; the controller controls the opening number of the peripheral light-emitting assemblies, so that the light intensity of the overlapping area is 80%-120% of the light intensity of the non-overlapping area, the possibility that dark spots or bright spots appear in the overlapping area is reduced, and the good light uniformizing effect is achieved.

The invention discloses a light energy digital control UV curing oven, and relates to the field of UV light curing equipment, the light energy digital control UV curing oven comprises an oven body, a UV curing channel is arranged in the middle of the oven body, conveyors are fixedly mounted on the front side and the rear side in the UV curing channel, and the two conveyors synchronously run; a UV curing lamp is fixedly mounted in the middle of the upper end of the furnace body, the bottom end of the UV curing lamp extends into the UV curing channel, and the UV curing lamp irradiates the interior of the UV curing channel; a plurality of detectors are mounted on the conveyor; compared with the prior art, the multiple detectors can monitor the UV light energy value and temperature in real time to obtain a light intensity power curve and a light energy total value, the UV light energy is detected in real time, the technical effect of digital UV curing is achieved, and the curing energy of UV glue is accurately controlled; and the controller is connected and installed on the detector, data storage within a period of time is achieved in the controller through the storage module, and the technical effect that the glue curing energy on the produced product is traceable is achieved.

The invention discloses a 3D printing photocuring forming method for a silicon nitride ceramic framework, and belongs to the technical field of advanced ceramic additive manufacturing. According to the 3D printing photocuring forming method for the silicon nitride ceramic framework, the silicon nitride framework containing a communicating hole array and a special-shaped supporting structure can be prepared through the DLP photocuring technology and customized slurry, the efficient infiltration requirement of a multiphase ceramic matrix is met, and the manufacturing efficiency is improved. The powder dispersity is improved through modification of a silane coupling agent, resin residues are thoroughly removed through cooperative control of a low-shrinkage resin system, segmented exposure, gradient degreasing and sintering, interface reaction with a complex-phase matrix at high temperature is avoided, stable complex-phase performance is guaranteed, layering does not exist after standing is conducted for 24 h through customized slurry, the process stability is extremely high, and the method is suitable for industrial production. Therefore, the problems of single skeleton structure, low dimensional precision and high impurity content in the prior art are solved, a complex three-dimensional pore structure can be prepared, the process stability is high, and the method is suitable for batch production and meets the requirements of multiple scenes such as high-temperature structural parts and multiphase ceramic reinforcement bodies.

The present invention discloses a wear-resistant soft-light tile with a translucent texture and a preparation method thereof, which relates to the field of ceramic tile processing. The preparation process includes the following steps: (1) Brick blank pretreatment step: Select a rough brick blank as the substrate, and preheat the polished rough brick blank at a temperature of 40-50 °C for 10-15 minutes; (2) Wear-resistant soft-light treatment step on the surface of the rough brick blank: Add a wear-resistant soft-light liquid, perform grinding, control the grinding coating time, and control the gloss of the brick blank surface to be less than 30°, so as to form a wear-resistant soft-light layer on the surface of the rough brick blank; (3) Soft-light curing treatment step: Drop and coat the soft-light curing liquid, control the dropping speed and the grinding coating time, so as to form a soft-light curing layer on the surface of the rough brick blank. Compared with the existing soft-light ceramic tile products, the soft-light tile of the present invention can achieve excellent results in terms of gloss, stain resistance, and the lasting wear-resistant effect of the translucent texture.

The invention discloses a DLP ray machine splicing device and photocuring D printing equipment, the DLP ray machine splicing device comprises a fixing plate and a DLP ray machine body, the fixing plate is provided with a through hole, the lower end of the DLP ray machine body is connected with a lens, the upper end of the fixing plate is provided with a translation structure, the translation structure is provided with a lifting structure, and the lifting structure is provided with a lifting mechanism. And the translation structure comprises a rotating block, a first lead screw, first bearings, a rectangular sliding groove and a rectangular sliding strip, the rectangular sliding groove is formed in the upper end of the fixing plate, the first bearings are installed at the two ends of the rectangular sliding groove, and the first lead screw is installed on the first bearings. According to the DLP ray machine splicing device and the photocuring 3D printing equipment, when the direction of the projection breadth of the DLP ray machine body is adjusted, the rotating block can be rotated, so that the DLP ray machine body is driven to move horizontally, the hand wheel is rotated, the first sliding block drives the DLP ray machine body to move up and down, and adjustment is easy and convenient.

The invention provides a volume 3D printing optical element manufacturing method based on multi-dimensional spin-coating surface modification, which comprises the following steps: preparing a photosensitive resin precursor solution containing a low-concentration photoinitiator, and performing exposure molding through a volume 3D printing technology to obtain a semi-cured initial blank; preparing a spin-coating liquid containing a high-concentration photoinitiator and an optional functional additive, and coating the surface of the primary blank with the spin-coating liquid through a precise spin-coating process; and finally, light curing is performed in a vacuum environment, so that the liquid film is completely crosslinked and chemically bonded with the surface of the initial blank. The high-concentration initiator spin-coating layer is used for overcoming the oxygen inhibition effect, a traditional solvent cleaning process is replaced, and the Ralt is obtained; the high-smoothness optical surface with the thickness of 5 nm is obtained, the original geometric accuracy of printing is kept, meanwhile, spin coating liquid is used as a universal carrier, full-color coloring, gradient color and multi-layer function superposition of the surface of an optical element are achieved, and the application range of volume printing in the optical field is greatly expanded.

The utility model provides water-based paint UV photocuring equipment which comprises a base, side plates are arranged on the base, a photocuring chamber is arranged between the side plates, a motor and a conveying belt are arranged at the bottom of the photocuring chamber, shielding curtains are arranged on the two sides of the photocuring chamber, a through opening is formed in the upper portion of the photocuring chamber, and the motor and the conveying belt are arranged in the through opening. The periphery of the through opening is provided with a placement groove, upper baffles are arranged on the two sides of the placement groove, limiting bases are arranged on the two sides of the upper baffles, and a ventilation assembly is arranged in the photocuring chamber. According to the water-based paint UV photocuring equipment, the UV lamp adjusting assembly can adjust the position of the UV lamp so that the UV lamp can achieve a better photocuring effect on a workpiece below the UV lamp, and the ventilation assembly can prevent the situation that after the UV lamp is used for a long time, the internal space of the photocuring chamber is too hot, and normal operation of the equipment is affected; an upper baffle and a limiting seat are convenient for a worker to overhaul the photocuring chamber from the upper part, so that the difficulty of overhauling, dismounting and replacing internal components is reduced.

The utility model relates to the technical field of industrial semiconductors, and discloses a device for detecting the working state of a lamp holder of ultraviolet light curing equipment, which integrates temperature, wind pressure and ultraviolet light intensity detection functions by optimizing the structure of a hardware circuit. The circuit comprises a switch type capacitor voltage converter, a linear voltage regulator, a phototriode, an NTC thermistor, a partial pressure sensor and a CAN communication module. Through the bidirectional TVS diode, RC filtering and two-stage voltage stabilization design, the anti-electromagnetic interference capability is improved, and the signal transmission reliability is improved; temperature, wind pressure and illumination detection circuits are integrated on a single board, the structure is simplified, and the space is saved; the standby energy consumption of the sensor is reduced through hardware power management; by comprehensively optimizing the circuit structure and the signal transmission path, the detection reliability of the working state of the lamp holder of the ultraviolet curing equipment is improved.

The present invention relates to a concrete zero-interval polyurethane curing and protective reinforcement material and a preparation method thereof. The reinforcement material sequentially comprises: an adhesive layer with controllable strength attenuation, a curing and protective layer, and a concrete bonding layer; the reinforcement material forms an integral body with a concrete forming steel formwork through the adhesive layer, and the joints between the adhesive layer, the curing and protective layer, and the concrete layer are mutually fused into a non-layered integral body; wherein the curing and protective layer comprises the following components by weight: 80-100 parts of a polyurethane light-curing resin, 0.2-0.8 parts of a photoinitiator, 20-25 parts of a diluent, and 3-5 parts of surface-modified nano-silicon dioxide; the concrete bonding layer comprises ultrafine magnesium oxychloride cement; the adhesive has an initial bonding strength of 1.2 MPa, capable of bonding the curing and protective layer and the concrete forming steel formwork; and over time, its bonding strength decreases to 0.05 MPa, enabling separation from the concrete forming steel formwork.

The utility model discloses a leveling device applied to a photocuring printer, and belongs to the technical field of 3D printing, the leveling device is characterized by comprising a fixed plate arranged on a rack and a light machine arranged on the fixed plate, and a connecting plate used for fixing the light machine is arranged at the lower end of the fixed plate; the fixing plate and the connecting plate are both provided with coaxial through holes for an optical machine lens to penetrate through, the fixing plate is provided with four force application pieces which always apply acting force close to the connecting plate to the connecting plate, the four force application pieces are arranged on the two sides of the fixing plate respectively, and three micrometer heads are evenly arranged on the fixing plate and surround the through holes. The measuring heads of the three micrometer heads always exert abutting force on the connecting plate, three abutting screws used for abutting against the connecting plate are evenly arranged on the fixing plate and surround the through hole, and the device has the advantages of being simple in structure, convenient to operate and high in precision.

The invention relates to the technical field of non-standard equipment manufacturing, in particular to a sealing foil attaching machine. The multi-station rotary workbench is arranged in the center of the machine table, and a plurality of bearing jigs are evenly distributed in the circumferential direction of the multi-station rotary workbench. The semi-finished workpiece conveyor and the finished workpiece conveyor are linearly arranged on one side of the workbench; the workpiece picking equipment is used for transferring the semi-finished products from the semi-finished product workpiece conveyor to the bearing jig in a time-sharing mode and transferring the finished products from the bearing jig to the finished product workpiece conveyor. The sealing foil supply equipment continuously supplies the sealing foil, and the sealing foil pickup equipment transfers the sealing foil and attaches the sealing foil to a preset position of the workpiece; and the dispensing equipment and the illumination curing equipment are sequentially arranged in the rotating direction of the multi-station rotating worktable and are respectively used for applying glue to the periphery of the sealing foil and performing UV curing on an adhesive. When the multi-station rotary workbench rotates, the bearing jig sequentially goes through the feeding station, the foil pasting station, the adhesive dispensing station, the curing station and the discharging station, automation of the whole process is achieved, the processing period is shortened, and the sealing effect of a finished workpiece is guaranteed.

Device for light application (1), in particular for light curing of liquid materials, e.g. dental fillings within the oral cavity, the device comprising: - a handheld handpiece (10) with a housing and a light source (11) arranged inside the housing for emitting light, - a light guiding element (20) with a light guide body (21) consisting of a transparent solid, a light inlet (27) for coupling light into the light guide body (21) such that the light is guided through the transparent solid, and a light outlet (26) for coupling light out of the light guide body (21), and - a fastening device provided on the housing of the handpiece (10) and a fastening area provided on the light guide element (20) for fastening the light guide element (20) to the housing of the handpiece (10), such that light emitted by the light source (11) is coupled into the light guide body (21) through the light inlet (27) and is coupled out of the light guide body (21) outside the housing of the handpiece (10) through the light outlet (26), - wherein the light guide element (20) has a longitudinal extent and defines a first optical axis for light coupled into the light guide body (21), wherein this first optical axis runs along the longitudinal extent of the light guide element (20), and wherein the light exit (26) defines a second optical axis for light coupled out of the light guide body (21), wherein this second optical axis runs transversely to the first optical axis and - wherein the light guiding element (20) is designed in the form of a rod with a rod axis extending substantially in a straight line along its longitudinal extent, such that the second optical axis runs transversely to the rod axis at the distal end, and / or wherein a reflector (23) for coupling out light is applied to the light guiding element (20), - wherein the light guiding element (20) comprises a sheath (22) enclosing the light guide body (21) and / or the reflector (23), wherein the sheath (22) has a refractive index which is lower than the refractive index of the light guide body (21), such that a core-sheath interface is formed for guiding the light.

The utility model relates to the technical field of dispensing machines, in particular to a visual patch dispensing and light curing all-in-one machine which comprises a rack, a mounting plate is arranged in the rack, an X-axis moving structure, a Y-axis moving structure and a Z-axis moving structure are arranged on the mounting plate, a station carrier plate is arranged at the moving end of the X-axis moving structure, a lower CCD camera is arranged on the station carrier plate, and the Z-axis moving structure is arranged on the lower CCD camera. The Y-axis moving structure is located on a moving path of the X-axis moving structure, the Z-axis moving structure is located at a moving end of the Y-axis moving structure, the Z-axis moving structure comprises three moving ends which are respectively provided with a light curing head, a primary chip mounting head and a secondary chip mounting head, an upper CCD camera is arranged on the Z-axis moving structure, and a dispensing cylinder is arranged on one side of the upper CCD camera. The X-axis moving structure and the Y-axis moving structure drive the Z-axis moving structure and the station carrier plate to move horizontally, the upper CCD camera and the lower CCD camera position the horizontal position bidirectionally, the Z-axis moving structure carries out lens assembly, dispensing and light curing, and the whole structure is high in automation degree and easy to use.