137results about How to "Guaranteed yield" patented technology

A battery unit and processing equipment relate to the field of batteries, the battery unit comprises a plurality of back contact battery strings and a confluence assembly, the plurality of back contact battery strings are arranged in a first direction, each back contact battery string is provided with a battery piece and a solder strip extending along the first direction, the solder strip is provided with a main body section and a connecting section, the main body section is arranged on the battery piece, and the connecting section is arranged on the main body section. The connection section is connected with the main body section, the confluence assembly comprises a first confluence assembly and a second confluence assembly, the first confluence assembly is connected with the two adjacent back contact battery strings, and in the thickness direction of the battery unit, the connection sections of the two adjacent back contact battery strings are connected to the top surface of the first confluence assembly, and the second confluence assembly is connected with the top surface of the second confluence assembly. The battery pieces are all located on the bottom face of the first confluence assembly, the second confluence assembly is connected with the back contact battery string located on the edge, and the projection of the second confluence assembly in the thickness direction of the battery unit is located in the range of the battery pieces. According to the technical scheme, the yield of the battery is ensured.

The application relates to the field of semiconductor packaging, in particular to a small-angle adjusting TO die bonding machine which comprises a die bonding table, X-axis and Y-axis moving mechanisms arranged on the die bonding table, and a work box with a material disc fixing assembly mounted at the output end of the Y-axis moving mechanism; an angle rotating mechanism of the die bonding table drives the die bonding table to rotate so that the top surface of a TO packaging tube base is horizontal; a dispensing mechanism dispenses the TO packaging tube base; and a wafer transferring mechanism transfers a wafer to the TO packaging tube base after dispensing. The angle of the whole die bonding table can be actively adjusted, so that the top surface of the TO packaging tube base with different preset inclination angles can be accurately corrected to the horizontal state. The design solves the problem that the die bonding must rely on a customized material disc with a specific angle in the prior art.

The utility model relates to the technical field of papermaking mesh production, and discloses a drying device for monofilament papermaking mesh production, which comprises a shell, a cavity is arranged in the middle of an inner cavity of the shell, a motor is fixedly mounted on the rear portion of the inner cavity of the cavity, and a rotating handle is fixedly connected onto an output shaft of the motor through a coupler. The front portion of the rotating handle is movably connected with a traction rod through a shaft, the bottom end of the traction rod is movably connected with a lifting rod through a shaft, the lifting rod is movably connected with the bottom of an inner cavity of the cavity in a sleeved mode, a connecting block is fixedly installed at the bottom end of the lifting rod, and the bottom of the connecting block is movably connected with a stretching roller through a shaft. The stretching roller is driven by the motor to stretch and shake the monofilament papermaking mesh, material shrinkage stress is counteracted, mesh hole blockage and deformation caused by monofilament winding or adhesion are avoided, surface roughness or protrusions are reduced through mesh piece tensioning, the flatness requirement is met, water in the material is migrated through shaking, the water content is reduced, and therefore the needed drying time is shortened. The device working efficiency is improved.

The utility model discloses water plating equipment for preparing a composite current collector, which comprises an anti-oxidation tank used for carrying out anti-oxidation treatment on the surface of the electroplated composite current collector; the first cleaning mechanism is arranged at the inlet of the anti-oxidation tank, and the first cleaning mechanism is used for cleaning the upper surface and the lower surface of the composite current collector; the roller pair comprises a first roller and a second roller, and the roller pair is arranged at the outlet of the anti-oxidation tank; and the second cleaning mechanism is arranged between the anti-oxidation tank and the roller pair, the second cleaning mechanism comprises a spraying pipe, the spraying pipe is provided with a plurality of nozzles in the first direction, and the nozzles face the gap of the roller pair. Metal particles on the surface of the composite current collector are washed through the first cleaning mechanism, the metal particles are prevented from entering an anti-oxidation tank and being attached to the surface of the composite current collector, and the nozzles of the second cleaning mechanism are arranged towards the rollers, so that attachment of the metal particles is further reduced, and generation of concave-convex marks of the composite current collector is reduced.

The application provides a metal oxide supported active metal catalyst, a preparation method and application thereof. The metal oxide supported active metal catalyst comprises a metal oxide carrier and active metal particles supported on the metal oxide carrier; the loading amount of the active metal is 0.1wt%-5wt% based on 100% of the mass of the metal oxide carrier. It is tested that the hydrogenation reaction of carbonates to prepare formate by using the metal oxide supported active metal catalyst provided by the application as a hydrogen source or using gaseous carbon monoxide with different concentrations and water to provide in-situ hydrogen source for the water gas shift reaction realizes the hydrogenation reaction of carbonates to prepare formate, the yield of the obtained formate is high, the selectivity is above 99%, there is no attenuation after 6 cycles, and the metal oxide supported active metal catalyst has excellent bifunctional effect. In addition, the preparation method of the metal oxide supported active metal catalyst is simple, the operation condition is mild, and the cost is low, so that large-scale production can be realized.

The application relates to a solar photovoltaic module no-glue-plate laminating machine structure and a laminating method applied to the field related to laminating technology, wherein the no-glue-plate laminating machine structure is characterized by the following steps: a corrugated pipe assembly and a lower pressing plate are arranged, the glue plate in the prior art is replaced, the solar photovoltaic module is laminated without the glue plate, a series of problems such as cost and laminating quality caused by the easy damage of the glue plate are effectively avoided, and in addition, the setting of an inclination detection assembly can monitor whether the lower pressing plate is inclined before laminating, so that the situation that the lower pressing plate is inclined due to the accumulated error caused by the wear of a guide shaft can be found in time, the uniformity of laminating is effectively ensured, the two glass plates in the photovoltaic module to be pressed are monitored in real time during laminating, the stable laminating process is effectively ensured, the situation that the two glass plates are relatively displaced can be found in time, the situation that a batch of products are scrapped due to the relative displacement does not easily occur, and the yield is effectively ensured.

This invention discloses a control method for improving the accuracy of coiling side guide control in 400 series stainless steel, relating to the field of metallurgical rolling technology. The method includes: obtaining the width and temperature of the strip head at the roughing mill exit; determining a first coefficient of thermal expansion based on the temperature of the strip head at the roughing mill exit, and calculating the cold value of the strip head width at the roughing mill exit based on the width and the first coefficient of thermal expansion; obtaining the finishing mill width extension, and calculating the cold value of the strip head width at the finishing mill exit based on the cold value and the finishing mill width extension; determining a second coefficient of thermal expansion based on the finishing mill target temperature, and calculating the heat value of the strip head width at the finishing mill exit based on the cold value and the second coefficient of thermal expansion; obtaining the coiling side guide head allowance value corresponding to the steel grade; and calculating the coiling side guide head opening value based on the heat value of the strip head width at the finishing mill exit and the coiling side guide head allowance value. This invention can improve the accuracy of coiling side guide opening control and enhance coiling quality.

The invention belongs to the technical field of ceramic preparation, and particularly relates to a method for preparing a high-performance ceramic rod by isostatic pressing, which comprises the following steps of: performing isostatic pressing treatment on polyvinyl alcohol serving as an adhesive, aluminum isopropoxide serving as a filling agent and raw materials to form a primary green body; and performing surface spraying on the basis of permeation, hydrolysis and sintering of the primary green body to obtain a to-be-sintered green body, and performing sintering and surface polishing to obtain the ceramic rod. The defect that a green body is damaged due to existing isostatic pressing treatment is overcome, the hard damage of an isostatic pressing mold is effectively reduced by combining the adhesiveness of polyvinyl alcohol and a flexible silica gel material, meanwhile, the performance of a secondary isostatic pressing green body is improved by means of sintering curing pretreatment, and the service life of the secondary isostatic pressing mold is prolonged. Therefore, the overall performance and the yield of the ceramic rod are ensured.

The utility model discloses an electronic cigarette shell forming die. The electronic cigarette shell forming die is characterized by comprising an upper die, a lower die and a forming sliding block mechanism, the forming sliding block mechanism comprises four forming sliding blocks, an inclined guide column and an elastic reset piece, the lower mold is provided with a mold core, the four forming sliding blocks are arranged around the four side faces of the mold core, the three forming sliding blocks are provided with first forming faces, the mold core is provided with a second forming face, the second forming face is provided with a cigarette holder forming part, and the other forming sliding block is provided with an extending part. The extending part is provided with a third forming face, and the mold core is provided with a first sliding groove. The inclined guide pillar is arranged on the upper die; the upper die is provided with a cavity, and the cavity is provided with a fourth forming surface; an injection mold cavity is defined by the first to fourth molding surfaces; thus, through the design of all the components, integrated injection molding of the cigarette holder and the shell is achieved, the follow-up assembly operation between the shell and all the components is facilitated, and therefore the production efficiency and quality stability of products are improved, the yield of injection molding workpieces is guaranteed, usability is good, and the application range is wide.

This utility model relates to the field of gearbox parts processing technology, and discloses a gear-shaping fixture for gearbox gear processing, including a rotating base. A rotating ring is movably connected in the inner cavity of the rotating base. A spiral rack is fixedly installed on the upper part of the rotating ring, and a helical gear ring is fixedly installed on the bottom of the rotating ring. A servo motor is fixedly installed at the front of the inner cavity of the rotating base. A helical gear is fixedly sleeved on the output shaft of the servo motor, and the outer extension of the helical gear meshes with the helical gear ring. A moving rod is evenly and movably sleeved in the inner cavity of the rotating base above the rotating ring. The bottom of the moving rod is evenly provided with grooves, which fit with the spiral rack. The servo motor drives the rotating ring, and with the fit between the spiral rack and the grooves, the moving rod drives the clamping plate to fix the internal gear. This facilitates the fixture to fix internal gear rings of different diameters, enhances the applicability of the fixture, improves the working efficiency of the fixture, ensures that the internal gear ring is centered, and reduces positional errors.

The present application relates to the technical field of high polymer material, and particularly relates to a kind of nanoparticle alkali-resistant hydrophobic modifier.The nanoparticle alkali-resistant hydrophobic modifier is composed of 25-55 parts of skeleton resin, 15-45 parts of anchoring agent, 1-10 parts of reinforcing agent and 100-300 parts of solvent.The present application uses perfluoropolymer system, so that the modifier is resistant to temperature of 400 DEG C or above and strong alkali corrosion;After sintering, it forms homogeneous and firm combination with PTFE matrix, solving the problem of interface peeling.The modifier is particularly suitable for preparing sealing gasket for alkaline electrolytic cell in high-salt and high-humidity environment at sea, significantly improving the dimensional stability and service life of the gasket.

The application discloses a method for extracting sodium glycolate from pesticide wastewater and belongs to the wastewater treatment field. After 2,4-D production wastewater is stirred after pH is adjusted to 3.0, the filtrate is collected by filtration, the pH of the filtrate is adjusted to 8.0, and the concentrated solution is obtained by concentration under reduced pressure. The concentrated solution, modified cyclodextrin and modified cellulose are mixed according to the weight ratio of 100:0.8-1.2:0.1-0.3, the first mixing and stirring are performed, the second mixing and stirring are performed after cooling, the third mixing and stirring are performed after cooling again, and the filter cake is collected. After the filter cake and deionized water are mixed and stirred, the filtrate is collected by filtration, and the sodium glycolate is obtained by vacuum drying of the filtrate. The application solves the problem of co-crystallization of sodium glycolate and sodium chloride, and improves the purity and yield of sodium glycolate.

The utility model discloses a biomass thermal cracking three-phase product high-efficiency separation device which comprises a cracking assembly which comprises a sliding rail type tubular furnace, and biomass raw materials are heated to a set cracking temperature through the sliding rail type tubular furnace and generate mixed products of gas, liquid and solid particles; the cooling assembly comprises a snakelike condenser and a liquid phase collecting bottle, and liquid phase components in the mixed product are separated through the snakelike condenser and stored in the liquid phase collecting bottle; the detection assembly comprises an on-line infrared gas analyzer, and gas components in the mixed product are detected through the on-line infrared gas analyzer; the purification assembly comprises an ethanol solution bottle and an aqueous solution bottle, alcohol-soluble gas components in the gas-phase components are absorbed through an ethanol solution in the ethanol solution bottle, and water-soluble gas components in the gas-phase components are absorbed through an aqueous solution in the aqueous solution bottle. According to the utility model, efficient separation of three-phase products of biomass thermal cracking is realized.

The utility model relates to a double-station tool placing mechanism which comprises a positioning tool used for placing a driving shaft, the positioning tool comprises a tool bottom plate and a placing seat, two placing stations are arranged on the placing seat, each placing station is of a U-shaped structure, and the driving shaft is movably placed on the placing stations. According to the scheme provided by the embodiment of the invention, the placement space is provided for the driving shaft through the placement station of the U-shaped structure, so that when the driving shaft is placed in the placement station, limiting is provided for the driving shaft through the two sides of the U-shaped structure of the placement station, and the situation that the positioning effect of the driving shaft is affected due to the fact that the driving shaft rotates at the placement station is prevented; it is guaranteed that in the pin assembling process of the driving shaft, a pin hole in the driving shaft does not deviate. And meanwhile, the side face of the driving shaft does not need to be clamped and fixed through a clamping mechanism, the situation that the surface of the driving shaft is crushed or scratched due to too large clamping force is avoided, and the yield of the driving shaft is effectively guaranteed.

This utility model discloses a strip cutting device for a spring-loaded window, comprising a feeding track for conveying the spring-loaded window, an upper limit mechanism facing the feeding track, and a lower cutting mechanism located below the feeding track and protruding upwards. The spring-loaded window includes a spring body conveyed within the feeding track and a strip connected to the spring body and integrally formed into a long strip. At least one flap is formed at one end of the spring body facing the strip, and at least one connecting strip is formed at one end of the strip facing the flap, connecting to the flap. The lower cutting mechanism includes a lower lifting cylinder and at least one cutting post passing through the feeding track to cut the connecting strip. This utility model accurately cuts the strip on the spring-loaded window without affecting other components, effectively ensuring the accuracy of the strip cutting. Furthermore, it requires no manual intervention, saving time and labor, improving production efficiency, and meeting the needs of rapidly developing production.

This application provides a water-flushing wafer unloading machine, including a positioning mechanism, a flushing system, a collecting mechanism, and a slide mechanism. The positioning mechanism is used to carry and position a substrate, and the substrate is used to carry the wafer. The positioning mechanism is provided with a discharge end for the wafer to be discharged from the positioning mechanism. The flushing system includes a first water spraying device disposed on the positioning mechanism, which sprays water onto the wafer from the side away from the discharge end, separating the wafer from the substrate and driving the separated wafer to be discharged from the discharge end and into the slide mechanism. One end of the slide mechanism is connected to the discharge end, and the slide mechanism provides a slide for guiding the separated wafer from the discharge end to the collecting mechanism. The collecting mechanism is connected to the other end of the slide mechanism, and the collecting mechanism is provided with a receiving end not higher than the discharge end for receiving the wafer that has been separated from the substrate and guided from the slide. This solves the problems of low efficiency and easy damage when separating wafers from the substrate in related technologies.

The utility model provides a kind of miniature high-precision chip pick-and-place device, comprising: including: pedestal, driving assembly, suction assembly, with pre-pressing guide rail and connecting piece, the driving end of the driving assembly is connected with the suction assembly by the connecting piece, the connecting piece is equipped with sliding block away from the suction assembly side, with pre-pressing guide rail one end is fixed with the pedestal, other end is slidably connected with the connecting piece, when driving assembly drives the motion of the suction assembly connecting piece and with pre-pressing guide rail opposite sliding. By setting with pre-pressing guide rail and connecting piece, driving assembly drives connecting piece movement and further drives the motion of suction assembly, the displacement change generated by driving assembly is converted into the position change of suction assembly by the sliding of with pre-pressing guide rail and connecting piece, and the precision of guidance can be effectively guaranteed by using with pre-pressing guide rail for guiding, effectively reducing corresponding vibration, with stable high characteristics, and further ensuring the yield of product.

The invention discloses a biomass gasifier system and a process method thereof, and belongs to the technical field of biomass gasification. The biomass gasifier system comprises a crushing system, a crushing system, a pelletizing system, a carbonization system, a gasification system, a waste heat recovery system, a fly ash interception system and a cooling and washing system which are communicated in sequence. By utilizing the technology, a mature biomass gasification production process method can be provided, the problems of the existing fixed bed, entrained-flow bed and other furnace types are solved, the consumption in the gasification process is reduced, and the production efficiency is improved.

This utility model discloses a lithium battery sheet metal box, including a top cover with a venting structure. The venting structure connects the interior and exterior of the lithium battery sheet metal box to allow gas generated inside the battery to escape. The venting structure includes a venting component and a waterproof and breathable membrane. The venting component includes a large-hole section and a small-hole section, which are connected by a stepped surface. The large-hole section is detachably connected to a fixing component. The waterproof and breathable membrane is clamped and fixed between the stepped surface and the fixing component, thus preventing the membrane from easily falling off. The fixing component has a through hole connecting the waterproof and breathable membrane to the interior of the sheet metal box. Furthermore, during the airtightness test of the lithium battery, the yield rate of the lithium battery sheet metal box can be ensured by replacing the waterproof and breathable membrane between the venting component and the fixing component. Alternatively, the membrane can be replaced when the membrane porosity increases and / or the waterproof and breathable membrane is damaged, causing a decrease in waterproof performance, to ensure the safety of the lithium battery sheet metal box during use.

The utility model relates to a kind of bush type air expansion shaft, comprising: always fill air expansion shaft;Bushing expansion piece is set in the large diameter end of the always fill air expansion shaft, and its outer ring is polygonal structure;And reel is set in the outside of the bushing expansion piece and is lifted inner wall by the edge of the polygonal structure when the bushing expansion piece tightens.Compared with prior art, the utility model has the advantages of preventing reel slip, improving winding stability, improving product yield, etc.

The application discloses a preparation method of a semiconductor device, which comprises the following steps: providing a substrate; forming a stack layer on the surface of the substrate, wherein the stack layer comprises a first type region and a second type region, and the first type region and the second type region are arranged adjacently; forming a mask layer on the surface of the first type region; forming a shielding layer on the sidewall of the mask layer, wherein the shielding layer shields part of the surface of the second type region; etching the second type region by taking the mask layer and the shielding layer as masks, the second type region shielded by the shielding layer is formed with a lateral erosion, and the width of the shielding layer is greater than the maximum width of the lateral erosion of the second type region; removing the shielding layer to expose the part of the second type region shielded by the shielding layer; and removing the exposed part of the second type region to make the sidewall of the first type region vertical and flush, so that the preparation method of the semiconductor device can reduce the over-etching influence on the adjacent sidewalls in the etching process, and improve the product performance and yield.

This invention relates to a method, apparatus, and system for optimizing the sensitivity, extinction ratio, and EMI of long-distance optical modules. The method mainly includes: detecting the output sensitivity of the optical module at different temperatures; compensating and adjusting the voff voltage based on the sensitivity shift at different temperatures; after compensating and adjusting the voff voltage, compensating and adjusting the bias current based on the optical power shift at different temperatures; detecting the output extinction ratio of the optical module at different temperatures; compensating and adjusting the Vmod voltage based on the extinction ratio shift at different temperatures; detecting the EMI of the optical module at different temperatures; if the EMI is unqualified, compensating and adjusting the Vmod voltage; if the EMI is still unqualified after multiple compensation and adjustments of the Vmod voltage, compensating and adjusting the RX amplitude voltage and RX pre-emphasis voltage to ensure that the sensitivity, extinction ratio, and EMI of the optical module are all qualified. This invention can optimize the sensitivity and extinction ratio of the optical module to the optimal value at various temperatures while ensuring EMI compliance.

The application discloses an automatic assembling equipment for a connector safety handle, comprising a rotating tray, a first locking key feeding station, a spring body assembling station, a handle main body feeding station, a second locking key assembling station and a comprehensive assembling station arranged in sequence along the rotating direction of the rotating tray; the loading position comprises a handle carrier and a first locking key carrier; the first locking key feeding station comprises a first locking key feeding device; the spring body assembling station comprises a spring body feeding device and a spring body assembling device; the handle main body feeding station comprises a handle main body feeding device; the second locking key assembling station comprises a second locking key feeding device and a second locking key assembling device; and the comprehensive assembling station comprises a free end righting guide device and a pressing buckle assembling device. The application can meet the assembling precision by righting and holding the spring body, and the product assembling qualification rate is significantly improved. The process and station design of separately assembling the first and second assembling bodies and then merging and assembling are efficient, smooth and stable.

The invention relates to the technical field of metallurgical materials, and particularly discloses a method for refining a functional boron stainless steel sheet structure through large deformation machining. Comprising the following steps that S1, smelting is conducted, specifically, a steel ingot is prepared through a vacuum induction smelting and electroslag remelting duplex technology; s2, sheath forging: carrying out surface treatment on the steel ingot to obtain a blank, filling the blank into a steel sheath for packaging to form a blank with a sheath, and carrying out hot forging on the blank with the sheath to obtain a forged plate with the sheath; s3, sheath rolling: performing multi-pass hot rolling on the forged plate to prepare a hot-rolled thin plate with a sheath; s4, solution treatment: carrying out solution treatment on the hot-rolled sheet to obtain a solution-treated sheet; and S5, surface treatment is conducted, specifically, after a steel ladle sleeve of the thin plate subjected to solution treatment is removed, surface treatment is conducted, and the functional boron stainless steel thin plate with the needed specification and size is obtained. By means of the method, the boron stainless steel sheet which is excellent in mechanical property, uniform in thermal neutron absorption and suitable for being used as a structure / shielding integrated material can be prepared.

This application relates to the field of wax impregnation technology, and more particularly to a wax impregnation device, comprising: a heating furnace with a receiving tank for holding molten wax; an adjustment mechanism including a mounting part; the adjustment mechanism being movably connected to the heating furnace, and the movement of the adjustment mechanism relative to the heating furnace causing the mounting part to move closer to or away from the receiving tank; and a mounting assembly rotatably connected to the mounting part, the mounting assembly including a flexible member for fitting into a hole in the workpiece to be waxed. The wax impregnation device described in this application can replace manual wax impregnation operations, effectively avoiding the problem of slow wax impregnation efficiency caused by manual operation, thus improving the production and assembly efficiency of the final product. Furthermore, the wax impregnation device can avoid the problems of unreliable and inconsistent wax impregnation effects caused by manual operation, thus ensuring a reliable sealing effect between the wax-impregnated workpiece and other parts after assembly.

The embodiment of the invention discloses a planarization method of a semiconductor structure and the semiconductor structure, and the method comprises the steps: providing a substrate with a plurality of structure patterns formed on the surface, forming a dielectric layer which covers the tops of the structure patterns and has a recess on the surface, and carrying out the spin-coating of an organic matter layer to fill the recess, performing first etching of a default mask on the surface of the organic matter layer by using a first etching selection ratio, removing the organic matter layer on the surface of the dielectric layer except the recess, leaving the residual organic matter layer of which the top surface is not lower than the surface of the dielectric layer in the recess, and performing second etching of the default mask on the surface of the organic matter layer by using a second etching selection ratio greater than the first etching selection ratio; and second etching of the default mask is carried out on the surface of the dielectric layer and the top surface of the residual organic matter layer until the recess and the residual organic matter layer in the recess are finally and synchronously eliminated, and the planarized surface of the dielectric layer with the recess eliminated is obtained. According to the method, grinding defects and bottom damage caused by the adoption of a traditional CMP flattening mode can be avoided.

The utility model discloses a multi-functional hand-held device for bad fruit detection and picking relates to wisdom agriculture technical field, including hand-held rod and hinge, hand-held rod is two-section design, and hand-held rod two sections are hinged through antiskid sleeve, the inside of hand-held rod upper section is equipped with telescopic pole, and the hinge is equipped with the telescopic pole. The upper end of the telescopic rod is fixedly connected with a metal platform, and a camera is arranged above the metal platform. Through the arrangement of the camera and the arrangement of the electric scissors, when fruits are picked, the conditions of the fruits can be observed through the camera, the reasons of the damaged fruits can be comprehensively analyzed according to the shot content, and the picking efficiency of the fruits is improved. By arranging the electric scissors, the platycodon roots of the fruits are directly sheared, the fruit loss is avoided, the yield of the fruits is ensured, meanwhile, the labor intensity of workers can be reduced, and the subsequent screening of the bad fruits is easier.

The application discloses a cake filling device, which comprises an upper mounting plate, a lifting driving assembly arranged above one side of the upper mounting plate, a rotating driving assembly arranged below the lifting driving assembly and connected to the lifting driving assembly, and a filling assembly arranged on the other side of the upper mounting plate. The rotating driving assembly comprises a rotating cylinder arranged below the lifting driving assembly, a lower mounting plate in the shape of an I-beam and connected to the lifting driving assembly at the upper end, a rotating driving structure arranged on the output shaft of the rotating cylinder, and a shearing structure arranged on the side of the rotating driving structure close to the filling assembly and below the filling assembly. The cake filling device can accurately shear the cake filling and accurately fill the cake filling into a cake mold, thereby achieving the purpose of filling the cake, and the cake filling device has high accuracy, high automation degree, and saves time and labor without manual operation.

The present invention provides a 5-methyl-1, 3, 4-oxadiazolone synthesis method, which comprises: 1, adding ethyl acetate to a reactor, dropwise adding 80 wt% hydrazine hydrate to the reactor at a temperature of 20-80 DEG C, and carrying out a reflux reaction after the dropwise adding is completed; carrying out reduced pressure distillation on the reaction liquid after the reaction is completed to remove byproducts and ethyl acetate; step 2, at room temperature and normal pressure, adding aqueous alkali and a catalyst into a system subjected to reduced pressure distillation in the step 1, cooling the system to 10 DEG C under uniform stirring, adding triphosgene in batches for 1-3 hours, heating to 20-30 DEG C after the charging is finished, and carrying out heat preservation reaction for 6-7 hours; acethydrazide residues are detected in the reaction process, the reaction can be stopped when the acethydrazide residues are smaller than or equal to 1 wt%, insoluble substances are gradually separated out in the system in the heat preservation process, and 5-methyl-1, 3, 4-oxadiazolone is obtained. In the synthesis process, the triphosgene is used for replacing phosgene, so that the product yield is ensured, the requirements on reaction equipment are reduced, the comprehensive cost is reduced, the wastewater is recycled and reused, and the method is a synthesis method suitable for industrialization.

The application relates to a light-emitting device, comprising: a chip layer, comprising a first surface and a second surface opposite to each other in a thickness direction; an isolation channel extending through the chip layer from the second surface to divide the chip layer into a pixel unit area comprising one or more sub-pixel areas, the isolation channel being arranged around the sub-pixel areas; a support material filled at least in the isolation channel to form a support structure, the support structure comprising a support part, a filling part and a protruding part, the filling part surrounding the sidewall of each sub-pixel area, the support part covering the second surface and the filling part, and the protruding part being connected with the filling part and extending from the filling part to a direction away from the second surface; a pixel groove located on the first surface side and corresponding to each sub-pixel area in position; wherein the protruding part surrounds the pixel groove; and a color conversion layer located in the pixel groove. Thus, the performance of the light-emitting device is improved.