213results about How to "Reduce production efficiency" patented technology

The invention discloses an automatic transverse and longitudinal splitting device and method for a flexible assembly battery piece. The automatic transverse and longitudinal splitting device comprises a rack, a conveying mechanism, a first splitting mechanism and a second splitting mechanism, and the battery pieces are sequentially conveyed to pass through the first splitting mechanism and the second splitting mechanism through the conveying mechanism; the protection layer and the silicon wafer are fractured along the scratches from the first direction through a first wafer splitting mechanism, so that the battery piece is split into a plurality of pieces which are connected through adhesive glue; and then the protective layer and the silicon wafer are broken along the scratches from a second direction through a second wafer breaking mechanism, so that the plurality of battery pieces are split into a plurality of small battery pieces which are connected with one another through adhesive glue. According to the invention, the protective layer and the silicon wafer in the three-layer structure of the battery piece can be cracked without cracking the adhesive, so that the cracked battery piece can be kept in an adhesion state, and conditions are provided for subsequent cracking, shaping and distance-expanding film coating production. According to the invention, the automation degree is high, and the productivity and the product quality can be effectively improved.

The invention discloses a Ca / Mg-based modified biochar material and a preparation method and application thereof, and the preparation method comprises the following steps: pretreatment: drying a biomass material shaddock peel, crushing, sieving, washing and drying, then carrying out acid leaching activation, washing again and drying to obtain high-activity biomass powder for later use; dipping modification: fully mixing the high-activity biomass powder obtained in the pretreatment step with CaO and MgO, adding distilled water, dipping under heating and stirring conditions, then carrying out solid-liquid separation, washing a filter cake for multiple times, freeze-drying, and sieving to obtain an intermediate product; the intermediate product is calcined, naturally cooled, washed and dried, and the Ca / Mg-based modified bimetallic modified charcoal material is obtained and can be applied to adsorption of phosphate in a wastewater solution as an adsorbent. The preparation method is simple, the raw materials are easy to obtain, the cost is low, the material stability is good, the pH adaptability is good, the adsorption effect is good, and the method is suitable for water environments with more complex pollution factors.

The invention discloses a handle-locked two-core single-ended waterproof high-voltage connector, which is provided with a handle arranged outside a head shell assembly and used for connecting a plug and a socket, the socket comprises a socket shell, and a socket shielding cover, jacks, a socket outer sealing ring, a socket inner sealing ring, a signal pin assembly and the like which are arranged in the socket shell; through multi-stage waterproof, the socket can independently seal water vapor when the plug and the socket are not plugged in each other. According to the invention, the plug and the socket are plugged and fixed in a quick handle locking manner, so that the reliability of plugging and fixing of the plug and the socket is ensured; the connector socket has an independent waterproof function, and can protect a plate end from water vapor entering to cause damage to a device under a special working condition; a multi-lip sealing ring is adopted for waterproof sealing, and compared with a conventional O-shaped sealing ring for single-layer protection, the structure is more reliable, and good sealing performance and anti-aging performance are achieved; and through a shielding conduction structure, the whole connector has good electromagnetic shielding effectiveness and mechanical strength.

The invention discloses a manufacturing method of an ultra-large seamless steel pipe with the diameter of 2000 mm, and belongs to the technical field of seamless steel pipe manufacturing in the metallurgical industry. The method comprises the following steps: heating a solid round tube blank, carrying out skew rolling by adopting a micro-expanding process to obtain a pierced billet, manufacturing the pierced billet into a hollow billet with an expanded diameter by utilizing a skew rolling expanding process, further expanding the diameter by using a flattening skew rolling process and simultaneously improving the dimensional precision and the surface quality of the hollow billet, and obtaining a semi-finished steel tube with the diameter of 2000mm by adopting a controlled rolling sizing process. And the semi-finished steel pipe is subjected to heat treatment, flaw detection and finishing procedures to directly obtain the ultra-large seamless steel pipe finished product of 2000 mm According to the method, materials are formed through one-time heating, only pipe blank heating is needed, heat treatment and reheating are not needed, energy is saved, and performance is improved; the on-line structure regulation and control method taking controlled cooling as the core thoroughly turns the passive situation that seamless steel pipes excessively depend on alloying and off-line heat treatment in the past, breaks through the bottleneck of the traditional process, and develops a new process and a new method for high-quality and high-efficiency manufacturing of the steel pipes.

The invention discloses an index template generation method and device, equipment, a storage medium and a product, and relates to the technical field of data processing, and the index template generation method comprises the following steps: obtaining target scene information in a preset format sent by a message queue; classifying the target scene information based on a field type, and performing mapping conversion on the classified target scene information based on a preset mapping rule to obtain converted target scene information comprising an index template name and an index processing rule; the target scene information is subjected to index execution, if the obtained execution result is qualified, an index template is generated based on the converted target scene information, the situation that each newly-accessed scene needs to be subjected to long joint debugging and testing stages to complete docking of new scene retrieval requirements can be avoided, and the retrieval efficiency is improved. And the generation efficiency of the index template is reduced.

The invention belongs to the technical field of waterproof materials, and particularly relates to a silane modified polyether waterproof coating and a preparation method for improving hydrophobicity of the silane modified polyether waterproof coating. The silane modified polyether waterproof coating is prepared from the following raw materials in parts by weight: 25 to 40 parts of polyether polyol, 40 to 50 parts of solid filler, 15 to 20 parts of plasticizer, 0.5 to 1.5 parts of silane end-capping reagent, 0.5 to 2 parts of silane coupling agent, 1 to 2 parts of water removal agent, 0.3 to 1 part of dispersing agent, 0.3 to 1 part of light stabilizer, 0.3 to 1 part of ultraviolet absorbent and 0.1 to 1 part of catalyst. The polyether polyol is obtained by random copolymerization of epoxypropane and epoxybutane, and the molecular weight of the polyether polyol is 8000-20000 g / mol. The silane modified polyether waterproof coating provided by the invention has good hydrophobicity and good mechanical strength, and meets the requirements on high-performance and environment-friendly waterproof coatings. The invention also provides a preparation method for improving the hydrophobicity of the polyether waterproof coating.

The invention relates to the technical field of transfer devices, and discloses a transformer insulation paper production transfer device which comprises a table, a conveying table is arranged at the top of the table, and a protection plate is fixedly connected to the top of the table. The rotating shaft rotates to drive the compression roller to rotate, so that the insulation paper which just rotates out of the rolling barrel can be leveled, the situation that the insulation paper is wrinkled and unsmooth in the transportation process in the subsequent production process is avoided, deflection or clamping stagnation of the insulation paper caused by unevenness of the insulation paper is emphatically reduced, the subsequent processing precision is improved, and the production efficiency is improved. And meanwhile, the first connecting plate moves upwards to drive the pressing plate to move upwards, so that the surface of the insulation paper can be further flattened, the flatness of the insulation paper in the transfer process can be improved, and the problem that the production efficiency is reduced due to uneven cutting in the follow-up link is solved.

The invention discloses a method for ultrafast synthesizing pyrochlore type and perovskite type oxides based on Joule heat, which comprises the following steps of: firstly, obtaining a solid precursor by adopting a coprecipitation method, then quickly heating the solid precursor to 700-800 DEG C by using a Joule heat shock technology, cooling to room temperature, and circulating heating-cooling operation for a plurality of times to prepare a series of pyrochlore type (A2B2O7) and perovskite type (ABO3) oxides; the synthesis time is extremely short (lt; the method has the advantages of high yield (more than 2500g / h), high energy efficiency and potential to realize the purpose of high-flux synthesis, and has a good industrial production basis and a wide application prospect.

The invention relates to the technical field of metal composite wires, in particular to a manufacturing method and device of a double-layer metal composite wire. The manufacturing method comprises the following steps that S1, a double-layer metal composite blank rod is taken, the double-layer metal composite blank rod comprises a core layer metal wire and a metal coating layer coating the outer side of the core layer metal wire, and the tensile strength of the metal coating layer is larger than that of the core layer metal wire; s2, the double-layer metal composite blank rod is subjected to multi-pass drawing, a composite metal wire is obtained, pulse current is applied to a metal coating layer located in a drawing area in the drawing process, the mechanical property of the metal coating layer is made to be matched with that of a core layer metal wire, and interface fracture is restrained; and S3, the composite metal wire is subjected to annealing treatment, and the composite metal wire is obtained. According to the method, the effect that only the metal coating layer is softened is achieved by controlling pulse current parameters and utilizing the skin effect and the electroplastic performance, the drawing deformation of the inner metal and the drawing deformation of the outer metal are consistent, the quality of the composite wire is improved, and the method is suitable for the situation that the conductivity of the inner-layer metal is larger than that of the outer-layer metal.

The invention discloses a sliding door locking structure and a sliding door mechanism, the sliding door locking structure comprises a lock box, the lock box comprises a lock box assembly part and a lock groove, and the lock box assembly part is used for being assembled with an upper rail; the vertical frame is provided with a sliding rail in the length direction of the vertical frame, and the vertical frame is used for being assembled with the side edge of the door body; the lock rod is arranged in the sliding rail in a sliding mode, one end of the lock rod is used for being connected with the lock groove in a matched and inserted mode, and the other end of the lock rod is in linkage with a handle of a door body so that the lock rod can stretch into or be separated from the lock groove. A lock hole or a lock tongue does not need to be arranged on the side edge of the door body, key components such as the lock box and the lock rod are hidden in the upper rail and the vertical frame, exposure of the lock is reduced, the safety of the door body is improved, meanwhile, the structure of the lock is simplified, the production efficiency is improved, and the production cost is reduced.

The invention discloses a purification method and a purification device for crystallized magnesium, and relates to the field of magnesium metal smelting. The method comprises the following steps: under the protection of an inert atmosphere, firstly carrying out pressure-applying melting treatment on a magnesium material to be smelted, and then carrying out pressure-applying filtering treatment on a product obtained after the melting treatment, so as to complete the flux-free smelting process of the magnesium material. And meanwhile, the metal magnesium liquid and most of the oxide shells are separated by utilizing the liquidity difference between the liquid metal magnesium and the solid oxide shells. Compared with a conventional smelting process without pressure application, the method has the advantages that the melting rate of the crystallized magnesium can be remarkably increased, most of oxide impurities are removed, a series of pollution problems caused by flux use are solved from the source, and low-cost, high-efficiency and high-quality smelting of the crystallized magnesium is realized.

The utility model discloses a fisheye flat gasket stamping die which is characterized in that a fisheye extruding station, a punching station, a blanking station and a guide pin mounting station are correspondingly arranged on a concave die plate, a lower base plate and a lower die plate at the lower end part of the die; the female die plate is further provided with a conical rod mounting station and a guide punching rod avoiding station. And a fisheye extruding mounting station, a punching mounting station and a blanking mounting station which are respectively arranged corresponding to the fisheye extruding station, the punching station and the blanking station are arranged on a stripping template and an upper fixing plate at the lower end part of the die. The stripping template is further provided with a conical rod avoiding station, a guide pin avoiding station and a guide punching rod installing station which correspond to the conical rod installing station, the guide pin installing station and the guide punching rod avoiding station respectively. The punching die is high in punching efficiency, the material utilization rate can be remarkably increased, the high precision of the surface parallelism and planeness of the fisheye flat gasket can be guaranteed, and the punching die can be produced in a large scale.

The invention discloses a short-process preparation method of a Cu-Ag-Be-Mg composite strip for a photodynode, and relates to a preparation method of a Cu-Ag-Be-Mg composite strip for a photodynode. The invention aims to solve the problems that the traditional strip preparation process is long, the energy consumption is high, the production efficiency is low, and a composite film layer prepared by sputtering, deposition and other methods is low in interface bonding force, short in service life and the like. The method comprises the following steps: 1, smelting; 2, semi-continuous casting; 3, homogenization treatment; 4, hot die forging; 5, heat treatment; 6, cold rolling; 7, surface treatment; 8, finish rolling; and 9, rolling. The method is different from a traditional large ingot casting and large rolling deformation equal-length process technology, after semi-continuous casting and homogenizing heat treatment are adopted, hot die forging is directly carried out, the thin-wall cylindrical part is obtained, finish rolling deformation is directly carried out after unfolding, the preparation process is shortened, and the production efficiency is improved. According to the preparation method, the Cu-Ag-Be-Mg composite strip for the photomultiplier can be obtained.

The invention discloses a battery module, which comprises a battery cell group, the battery management system is positioned on the side surface of one end of the battery cell group and is fixedly connected with the battery cell group; the flexible circuit board is positioned at the top of the battery cell group and extends along the length direction of the battery cell group, and a plug electrically connected with a battery management system is arranged at one end of the flexible circuit board; a plurality of L-shaped connecting pieces are arranged on the two sides of the flexible circuit board at intervals, and each connecting piece comprises a first section which extends in the length direction of the battery cell group and is located in the edge of the flexible circuit board, and a second section which extends out of the edge of the flexible circuit board in the width direction of the battery cell group; and a gap is formed between the first section and the flexible circuit board. Compared with the prior art, the flexible circuit board is directly connected with the corresponding socket of the battery management system in an inserted mode through the plug, wire harness collection is omitted, wire harness switching is reduced, the risk of collection loss is reduced, the connection reliability and the collection stability are improved, the manufacturing efficiency is improved, and the production cost is reduced.

The invention discloses a device and a process for continuously preparing alpha-phase silicon nitride by a precursor method, and relates to the technical field of preparation of alpha-phase silicon nitride. In the process provided by the invention, the raw material silicon tetrachloride directly reacts with liquid ammonia in the reactor in a vaporific form under the action of high-purity nitrogen through an atomizer, and meanwhile, the by-product ammonium chloride solid generated by the reaction can be ensured to be completely dissolved in the liquid ammonia through the reaction temperature and the reaction pressure and by limiting the feed flow ratio of the raw material silicon tetrachloride to the liquid ammonia; the content of ammonium chloride impurities in generated solid material precursor silicon imine is reduced, and the impurity decomposition amount during subsequent calcination is reduced while the product purity is improved.

The invention discloses a double-end-ring bent edge retainer production process and a die. A stretching and bottom cutting integrated forming die is used for carrying out stretching and bottom cutting operation on a circular blank disc, so that the circular blank disc is deformed into a semi-finished product with an inverted bowl-shaped structure, the semi-finished product is transferred to a straightening and shaping die, an inner turned edge formed in the previous step is corrected, and the retainer with the double-end-ring bent edge is obtained. Vertical to the horizontal reference surface; meanwhile, the flanging is adjusted to be parallel to the horizontal plane; a trimming die is used for accurately adjusting the length of the outer flanging on the lower side; an upper port part of the bowl-shaped structure is preliminarily bent by the aid of a pre-flanging die to form a flanging with a certain preset angle, the preliminarily bent part is further bent by the aid of a flanging die until the preliminarily bent part is completely parallel to the horizontal plane to form a stable upper side outer flanging, and the retainer with the double-end ring bent edges is produced by the aid of a multi-step stamping process. And the production speed is high, a plurality of parts can be continuously and rapidly machined, and the time for waiting for cooling or curing is not needed.

The invention relates to the technical field of zinc powder manufacturing equipment, and particularly discloses a continuous production inert zinc powder atomization preparation device which comprises an atomization furnace, the bottom of the atomization furnace fixedly communicates with communicating pipes, and the two communicating pipes are connected with a large grading system and a small grading system correspondingly. Wherein one ends, far away from the atomizing furnace, of the large grading system and the small grading system are fixedly communicated with a balance tank. Molten zinc can be preliminarily refined when passing through the flow guide holes under the action of pressure intensity, finally enters the polymerization groove in the polymerization base and is differentiated again through the flow diffusion holes communicated with the polymerization groove, the molten zinc can be differentiated into trickles in a multi-stage mode through the multi-stage differentiation mechanism, the trickles can be more evenly distributed in the atomization chamber, and therefore the atomization effect is improved. By means of the technical scheme, the contact area between atomized gas and the liquid zinc is larger and more uniform, the situation that local liquid zinc is too much or too little is avoided, it is ensured that each part of liquid zinc can be fully and stably atomized, zinc powder with more uniform particle size is produced, and the product quality is improved.

The utility model relates to the field of machining production lines, and provides automatic bridge end face polishing equipment which comprises a conveying roller way, a polishing module and a locking module. The grinding module comprises a grinding machine support, a transverse rail and a double-face grinding machine, the transverse rail is fixedly arranged on the upper portion of the grinding machine support, and the double-face grinding machine is arranged on the transverse rail in a sliding mode. A first polishing wheel and a second polishing wheel are arranged on the front side face and the rear side face of the double-face polishing machine correspondingly to polish the end faces of the bridges on the two sides. And the locking module comprises a telescopic rod for preventing the bridge frame from advancing and a pressing device for pressing the bridge frame. The double-face polishing device has the advantages that the double-face polishing device is adopted for accurate and efficient operation, the end faces of the two sides after cutting are polished at the same time in the production process of the bridge frame, accurate control over the polishing operation speed is achieved through a control system, the efficiency and adaptability of a production line are remarkably improved, and the production cost is reduced. And various complex production requirements can be met.

The invention relates to the technical field of abnormity control, and particularly discloses a pipe end forming control system for automobile metal pipe fitting processing, which comprises a pipe end forming device, an acquisition module, a processing module, a processing module and a control module, and is characterized in that a minimum circumcircle of a pipe end is marked in a front image of the pipe end of an automobile metal pipe fitting, the area of the minimum circumcircle is determined, and an area difference value is calculated; the processing module is used for acquiring a deviation value of the automobile metal pipe fitting in the acquisition period and generating a coordinate point; determining an initial image, and obtaining a target image based on the initial image; determining a sub-definition domain, and obtaining a judgment parameter based on the function relation of the target image in the single sub-definition domain; and the judgment module is used for calculating a judgment value, counting an abnormal proportion and determining abnormal equipment according to the abnormal proportion. The abnormal pipe end forming equipment can be determined, and production efficiency reduction caused by abnormity of the pipe end forming equipment is avoided.

The invention belongs to the technical field of aluminum alloy, and particularly relates to a high-strength weldable anti-fatigue aluminum alloy profile and a preparation method and application thereof. Cu and Er are added into the alloy at the same time, the content range of the Cu element is strictly controlled to be larger than 0.2% and smaller than 0.5%, the content range of the Er element is strictly controlled to be 0.05-0.20%, the weight ratio of Cu to Er is further limited to be larger than 1 and smaller than or equal to 3, the casting process is improved on the basis of component design, and effective adding of Er and other components is ensured. Meanwhile, the standing time between quenching and aging is limited to be less than or equal to 12 hours, so that higher mechanical properties can be obtained. According to the aluminum alloy profile prepared through the method, through double improvement of components and the preparation method, the T5 state performance yield strength is larger than or equal to 365 MPa, the tensile strength is larger than or equal to 400 MPa, meanwhile, the welding coefficient of laser-arc hybrid welding is larger than or equal to 0.8, the fatigue strength is larger than or equal to 230 MPa (R =-0.2, Kt = 1, f = 10-200 Hz, and the cycle index is 1.0 * 107), and the comprehensive performance is comprehensively improved compared with traditional aluminum alloy materials such as 6082, 6061, 6063 and 6005.

The air bag type modularized unmanned aerial vehicle air ejection device comprises a cylinder body, an air bag combination body, an actuating arm, an actuating piston, a buffering exhaust mechanism and an air source, an opening extending in the length direction of the cylinder body is formed in the top of the cylinder body, and the air bag combination body is arranged in the cylinder body; the air bag assembly comprises a plurality of sections of air bags which are sequentially spliced and communicated, the air source is communicated with the rear end of the air bag assembly, the actuating piston is connected with the front end of the air bag assembly, and the actuating arm is connected with the actuating piston and extends out of the cylinder body through the opening. The unmanned aerial vehicle gas ejection device has the advantages of being simple in structure, high in adaptability, reliable in ejection and high in ejection efficiency.

The utility model provides an automatic pouring device for producing ladle castable, which relates to the technical field of ladle pouring and comprises pouring equipment and a pouring mould, one side of the pouring equipment is rotatably connected with a bearing plate, an outer fixed barrel is fixed at the top of the bearing plate, a discharge nozzle is fixed on the peripheral surface of the outer fixed barrel, and the inner wall of the outer fixed barrel is rotatably connected with an inner rotating barrel. A mode of installing an inner rotating barrel is adopted to solve a series of problems that the performance of a plurality of materials can be changed at a high temperature in the pre-pouring stage, the materials which can keep the characteristics of the materials and can be effectively stirred are difficult to find, the uniformity of the pouring materials is insufficient, and a series of problems can be caused as firstly, the non-uniform pouring materials can influence the flowability of the pouring materials; the problems of incomplete filling, excessive bubbles and the like occur in the pouring process due to the fact that the existing pouring materials are not uniform, the performance and the service life of products are directly affected by insufficient strength after pouring forming due to uneven pouring materials, and finally, if the yield is reduced, the production cost is increased, the production efficiency is reduced, and even the market competitiveness of enterprises is affected.

The invention provides a diamond thick film and a preparation method thereof, and the preparation method comprises the following steps: (1) electrifying and heating the surface of a substrate by using a hot filament, introducing a methane and hydrogen mixed gas with the methane volume content of 2-8%, and depositing diamond on the surface of the substrate; (2) after the single deposition thickness of the diamond reaches 50-150 microns, stopping introducing the methane, and maintaining for 0.5-20 hours in a hydrogen atmosphere; (3) introducing a methane and hydrogen mixed gas with the methane volume content of 2-8%, and continuously depositing the diamond; (4) after the single deposition thickness of the diamond reaches 50-150 microns, stopping introducing the methane, and maintaining for 0.5-20 hours in the hydrogen atmosphere; and (5) according to the required thickness of the diamond thick film, the step (3) and the step (4) are repeated, the diamond thick film is obtained, and the thickness is 600-2500 microns. According to the method, the diamond phase content in the diamond thick film is increased, and the mechanical and thermal properties of the diamond thick film are improved.

The invention relates to the technical field of sorting devices, and discloses a food processing sorting device which comprises a base, a sorting assembly is arranged above the base, a feeding assembly is fixedly installed at the top end of the sorting assembly, a supporting frame is arranged at the bottom end of the sorting assembly, a vibration assembly is arranged in an inner cavity of the base, and the sorting assembly comprises a sorting barrel. Soybeans can be subjected to secondary sorting through the sorting assembly, screening is more thorough, the screened soybeans can be sorted into corresponding collection vessels, dust attached to the outer surfaces of the soybeans can be removed during sorting, the cleaning workload during later processing is reduced, and the cleaning efficiency is improved. Materials can be scattered on the sorting assembly in a scattered mode through the feeding assembly to be sorted, the scattering assembly can be adjusted according to the sizes of the materials, the phenomenon of material blocking is avoided, the vibration amplitude can be adjusted through the vibration assembly, meanwhile, the materials are rapidly scattered through multi-direction shaking, and the sorting effect is improved.

According to the silk fibroin hydrogel microneedle manufacturing method and the hydrogel microneedle, a silk fibroin solution and a riboflavin aqueous solution are evenly mixed to obtain a mixed solution, then a hydrogen peroxide solution is added into the mixed solution to be mixed to obtain a precursor solution, then the precursor solution is poured into a light-transmitting microneedle mold, and the silk fibroin hydrogel microneedle is obtained. Placing a microneedle mold containing the precursor solution into a vacuum pump, performing vacuum pumping treatment, taking out the microneedle mold, placing the microneedle mold under ultraviolet irradiation for illumination to form a gel, drying the gel at room temperature, taking out the gel from the microneedle mold, forming a plurality of convex cones on the outer surface of the gel, and performing vacuum pumping treatment on the cones to obtain the composite microneedle. The silk fibroin hydrogel microneedle is obtained. According to the design, the operation requirement is low, the slow release effect is good, the biocompatibility is high, and efficient carrying of treatment medicine is facilitated.

The present application relates to the field of tool processing, and particularly relates to a processing technology for metal ceramic vertical installation forming groove tool. The processing technology comprises the following steps: step 1: processing a blank into a tool finish with a positioning bevel; step 2: processing a reference plane on the end face of the tool finish at the chip rolling groove, the included angle between the reference plane and the end face is the angle of the tool clearance angle; step 3: processing a tool tooth with a clearance angle and a side clearance angle at the reference plane of the tool finish, and detecting the tooth profile data of the tool tooth, the tooth profile data includes tooth width, tooth depth and angle, the detection of the tooth profile data adopts a projection comparison detection method, a standard tooth profile is fixed on a projection surface, and the tool tooth to be detected is enlarged through projection, if the tool tooth data is correct, the tool tooth data is coincident with the standard tooth profile; and step 4: processing the tool chip rolling groove, and performing passivation and coating treatment on the blade edge. Through the implementation of the present application, the processing and detection efficiency of the forming groove tool is improved.

The invention discloses a cut-off plug gate production mold based on a coated sand process, comprising a first upper mold and a first lower mold, the first upper mold is provided with a vent hole and an ejection hole, the vent hole is provided with an exhaust plug, and the ejection hole is provided with an ejection rod; a middle casting molding groove and a side casting molding groove, the first lower mold is provided with a first give-way groove and a second give-way groove, the first give-way groove is provided with a first lower half sand-shooting hole, and the second give-way groove is provided with a second lower half sand-shooting hole; a middle casting molding protrusion and a side casting molding protrusion, the first upper mold is provided with a first mate and a second mate, the first mate is provided with a first upper half sand-shooting hole, and the second mate is provided with a second upper half sand-shooting hole; a semi-casting protrusion is provided at the bottom of the middle casting molding groove, semi-casting convex strips are provided on both sides of the semi-casting protrusion, and a casting port column is provided on the semi-casting convex strip. The invention can improve production efficiency.

This utility model relates to the field of ultrafiltration membrane equipment technology, and discloses an ultrafiltration membrane device for milk production, including a frame with crossbars fixedly connected to both the upper and lower ends of the frame. This ultrafiltration membrane device for milk production, through a shock-absorbing mechanism, involves first installing a shock-absorbing filter frame through the filter tube onto the inside of the crossbars when the device is to be used. A rubber shock-absorbing ring is installed in the middle of the shock-absorbing frame, which is initially fixed to the outside of the filter tube. Then, a shock-absorbing spring is installed outside the rubber shock-absorbing ring. To ensure shock absorption while protecting the filter tube, foam cotton is filled outside the shock-absorbing spring and inside the shock-absorbing frame for shock absorption protection. This effectively reduces vibration and shaking outside the filter tube, preventing the connection between the filter tube and other parts of the equipment from gradually loosening due to vibration, which could lead to milk leakage, waste of raw materials, contamination, interference with the normal operation of the ultrafiltration process, and reduced production efficiency.

The utility model relates to the technical field of winding drum splines, and discloses a spline connection structure of a large-tension winding drum, which comprises a hollow shaft, one end of the hollow shaft is provided with an embedded groove, a spline housing is slidably mounted in the embedded groove, and the spline housing comprises a sleeve slidably mounted in the embedded groove. A connecting ring with one side making contact with one end of the hollow shaft is fixedly installed on one side of the sleeve, and a connecting key is fixedly installed on the surface of the connecting ring. According to the spline connecting structure of the large-tension winding drum, the embedded groove and the connecting threaded hole are formed in one end of the hollow shaft, the spline sleeve is connected to one end of the hollow shaft in a bolted mode through the embedded groove and the connecting threaded hole, the hollow shaft and the spline sleeve are machined and manufactured separately, the machining difficulty of the hollow shaft is lowered, and the problem that an internal spline and the hollow shaft are integrated is solved; the manufacturing cost and the machining difficulty are greatly improved, the production efficiency is reduced, and the maintenance cost of equipment is also greatly improved.

The invention relates to an ultraviolet curing device with nitrogen protection, a curing system and a curing method.The ultraviolet curing device mainly comprises a first cavity, a main gas dispersion assembly and a second cavity, the first cavity is located on one side of the main gas dispersion assembly, and the second cavity is located on the other side of the main gas dispersion assembly; a nitrogen inlet is formed in one side of the first cavity, a nitrogen outlet is formed in one side of the second cavity, the main gas dispersion assembly is used for dispersing nitrogen in the first cavity and conveying the nitrogen to the second cavity, an ultraviolet irradiation assembly is further arranged in the second cavity, and the ultraviolet irradiation assembly faces the nitrogen outlet. According to the ultraviolet curing device, the concentration of nitrogen flowing out of the nitrogen outlet is high, and the nitrogen purging atmosphere is stable, so that the curing effect of a product is stable.