885results about How to "Improve pass rate" patented technology

The utility model discloses an automatic clamping corner device for a pipe bending machine, which comprises a fixing plate, a die-in fixing seat arranged on the fixing plate through a left-right sliding device, a corner seat arranged on the die-in fixing seat through an up-down sliding device, a rotating die arranged on the corner seat through a rotating device, and a clamping device arranged on the rotating die. The rotating die can rotate relative to the center line of the rotating die through the rotating device; a clamping groove is inwards formed in the circumference of the rotary die, and the position of the clamping groove ensures that the center line of a pipe is overlapped with the center line of the rotary die when the pipe is placed at the bottom of the clamping groove; and a pipe clamping die assembly for clamping the pipe to abut against the bottom of the clamping groove is arranged on the corner seat. The device is arranged near a pipe bending wheel module on the pipe bending machine, assists the pipe bending wheel module in pipe bending, is simple and compact in structure and small in occupied space, can accurately guarantee the rotating angle of a pipe, and greatly improves the percent of pass of products.

The invention discloses an electromagnetic wire self-adhesion performance data acquisition and intelligent analysis method, and relates to the technical field of data analysis. Multi-source data such as turn-to-turn gap, paint layer residual thickness, tension fluctuation and conduction state are synchronously acquired in the winding process; and analysis mechanisms such as a gap reduction rate, paint layer thinning distribution, a synchronous evolution track and a gap strength response curve are introduced, so that continuous modeling and quantitative characterization of the autohension performance evolution process are realized. Compared with the prior art which only depends on a single gap threshold value or a post mechanical test to judge the bonding performance, the method can be started from a complete physical chain from gap change to paint layer extrusion to metal contact to bonding failure, and the change trend of the bonding performance under different gap levels can be accurately revealed; and tension output is corrected in real time through a self-adaptive algorithm, closed-loop optimization of the bonding quality is achieved, and the product percent of pass and the production efficiency are improved.

The utility model discloses an anti-deformation bearing thin-wall part machining supporting and fixing structure which comprises a base and a supporting assembly, a machining table is connected to the top of the base, clamping blocks are arranged on the two sides of the top of the machining table, and the supporting assembly is arranged in the machining table and comprises a bevel gear ring and a plurality of bevel gears meshed with the bevel gear ring. A lead screw is arranged in the machining table through a plurality of rotating frames, the surface of the lead screw is in transmission connection with a supporting plate through a lead screw nut, the supporting and fixing structure is provided with a supporting assembly, a driving motor drives a bevel gear ring to rotate, a plurality of bevel gears rotate synchronously, then the lead screw is driven to rotate, and the supporting plate ascends to support the interior of the thin-wall part; by means of the internal supporting mode, pressure and friction force borne by the inner wall of the thin-wall part during polishing can be effectively dispersed, deformation caused by lack of supporting is avoided, the size precision, the shape precision and the surface quality of the bearing thin-wall part are guaranteed, the product percent of pass is increased, and waste products are reduced.

The invention discloses a mold design method for a rubber part with a metal insert and a vulcanization molding process method thereof.The mold preparation method comprises the steps that firstly, a three-body type mold is designed according to the rubber part and comprises an upper mold, a middle mold and a lower mold, the middle mold, the upper mold and the lower mold are jointly positioned, and the middle mold and the lower mold are provided with glue overflowing grooves; 2, calculating the size of a mold cavity; step 3, mold preparation; the upper die, the middle die and the lower die are all made of 45 # steel, and the heat treatment hardness is 35-40 HRC; the roughness of the mold cavity part is 0.4, and the roughness of the matched part of the mold is 0.8. The vulcanization molding process method comprises the steps of rubber remilling, vulcanization molding, burr cleaning and inspection. Aiming at a rubber product containing an embedded metal ring, the problems of position control of an embedded part and difficulty in mold design are solved, and the problem of batch production is solved; the optimal product performance is ensured by the optimized vulcanization forming process; the environment-friendly effect is improved, and the waste rate is reduced.

According to the pole piece thickness control method, a dynamic regulation and control mechanism is constructed by detecting the thickness of a pole piece in real time and calculating the thickness deviation in real time, once the thickness deviation is larger than a preset threshold value, a system can give out an instruction in real time, a rolling mechanism is driven to adjust a roll gap, and it is ensured that the rolling thickness of the follow-up pole piece is stable and consistent; the requirements on the thickness consistency and stability of the pole piece are met, so that the product defects are reduced, and the product qualification rate is improved; reworking and scrapping are reduced, the production cost is reduced, meanwhile, the downtime is shortened, and the production efficiency is improved.

The utility model provides a self-propelled sunflower harvester, which belongs to the technical field of agricultural machinery and structurally comprises a self-propelled vehicle machine and a frame, a header is arranged at the front end of the frame, and a primary conveyor and a secondary conveyor are communicated with the rear of the header. The rear part of the secondary conveyor is communicated with a thresher; a screening mechanism is arranged below the thresher, and the screening mechanism is composed of a first-stage vibrating screen which is composed of a swinging fish scale screen and rushes backwards, and a second-stage vibrating screen which is composed of a swinging stepped dense mesh screen and rushes forwards; the screening mechanism communicates with the conveying and lifting mechanism. The conveying and lifting mechanism comprises a transverse auger and a bucket elevator. And the conveying and lifting mechanism is connected with the grain collecting hopper. The sunflower seed and sunflower disc separating device can achieve good separation of sunflower seeds and sunflower discs, the sunflower seeds and the sunflower discs are respectively conveyed in two paths during threshing, and simple and efficient threshing separation can be achieved. The threshing process is automatically completed, manpower and material resources are saved, and good harvesting and harvesting effects are achieved.

This application relates to a pin bending device for electrical connectors, belonging to the field of pin bending technology. The device includes a base, a feeding mechanism, an assembly mechanism, and a bending mechanism. The feeding mechanism includes a housing conveying assembly and a pin conveying assembly. The housing conveying assembly is located at one end of the base along its length, and the pin conveying assembly is located on the base. The housing conveying assembly can convey the housing, and the pin conveying assembly can convey the pin. The assembly mechanism is located on the base and on one side of the housing conveying assembly along its length. The assembly mechanism can receive the housing and the pin and assemble and fix them to form a terminal. The bending mechanism is located on the base and can perform two bends on the pin. This application aims to solve the problem of low production efficiency caused by the difficulty in simultaneously achieving automated assembly and bending.

The utility model relates to the technical field of batteries, in particular to a drying oven system and a battery production line. The drying oven system comprises an air inlet pipeline, a humidity adjusting device, a first humidity detecting device, a drying device, a temperature adjusting device and an exhaust pipeline, the air inlet pipeline comprises a first air inlet pipe and a second air inlet pipe, fresh air enters one end of the first air inlet pipe, and the other end of the first air inlet pipe communicates with the humidity adjusting device; the second air inlet pipe is communicated with the exhaust pipeline; the communicating position of the second air inlet pipe and the exhaust pipeline is arranged on the upstream side of the temperature adjusting device, the second air inlet pipe communicates with the first air inlet pipe, and the second air inlet pipe is used for guiding air exhausted by the exhaust pipeline into the drying device. The communicating position of the second air inlet pipe and the first air inlet pipe is arranged between the temperature adjusting device and the humidity adjusting device. According to the film drying device, the humidity of the gas entering the drying device can be within the preset range, so that the film is dried, and the cracking probability of the film is reduced.

The utility model relates to the technical field of seamless steel tube processing, and discloses a seamless steel tube cold drawing device which comprises a base, a mounting plate is arranged above the base, four clamping mechanisms are arranged on the outer surface of the mounting plate, each clamping mechanism comprises a fixing frame mounted on the outer surface of the mounting plate, and a first motor is mounted on the outer surface of each fixing frame. The four clamping mechanisms surround the steel pipe and are matched with the first motor, the first threaded rod and the non-slip mat, pressure is evenly applied from multiple directions, meanwhile, the four electric push rods drive the top plate to jack up the inner wall of the steel pipe, the four electric push rods are matched with the four clamping mechanisms, the risk that a mold falls off is remarkably reduced, and the clamping stability is improved; the operation flexibility and applicability are enhanced, the steel pipe is effectively prevented from shaking and deviating, the quality defect is reduced, the qualified rate of finished products is improved, the shutdown overhaul frequency is reduced, the production continuity is guaranteed, in addition, potential safety hazards are eliminated, and a powerful guarantee is provided for safe production.

The invention discloses an intelligent temperature control method and system for a high-silica glass fiber production line, and relates to the technical field of high-silica glass fiber production.The intelligent temperature control method comprises the following steps that firstly, temperature sensors arranged at all nodes in a furnace hearth of a smelting furnace collect temperature data in real time, and on the basis of a finite element analysis algorithm, the temperature data are obtained; a regional temperature field model is constructed in combination with temperature data, content data of trace impurities in the raw materials are acquired in real time by adopting online detection equipment, the viscosity change trend of the melt under the current raw materials can be analyzed, the current temperature threshold value is dynamically adjusted according to the viscosity change, and the limitation of a traditional fixed temperature threshold value is broken through; the temperature control can better adapt to real-time fluctuation of trace impurities in raw materials, and proper temperature control can be realized under different raw material conditions, so that the qualified rate of products is effectively improved, the loss rate of the raw materials is reduced, manual intervention is reduced, the timeliness and accuracy of temperature control are improved, and the production cost is reduced. And the production efficiency and the product quality are further improved.

The utility model discloses a kind of plastic accessory automatic polishing mechanism, including workbench, intercept net and threaded rod;The side of workbench is provided with recessed frame, the side of the side of recessed frame is provided with motor A;Intercept net is arranged in the top side of workbench, and the top of workbench is provided with slide rail;The utility model is slid on slide rail by cylinder A to promote moving lug, can accurately move plastic accessory to specified polishing position, cooperate the fixing of plastic mould to plastic accessory, ensure that plastic accessory is stable in position during polishing process;Through the collaborative work of cylinder A, motor A, cylinder B and motor B and the like components, realize a series of operations such as plastic accessory from clamping, polishing component moves to polishing operation and waste cleaning automation, reduce manual intervention;Through dust collector and hopper of workbench bottom formed waste cleaning system, waste generated can be sucked in time during polishing process, avoid waste accumulation.

The invention discloses a gluing and gradient low-temperature pressing process for paper-plastic packaging, which comprises the following steps: S1, pretreating a base material: inspecting a printed paper-plastic composite base material, placing in a constant-temperature and constant-humidity environment for 20-24 hours, and balancing the moisture content to 5-7%; the base material is placed on a production line of a bag making machine, and the easy-to-tear line is formed through a magnetic knife; s3, point coating type gluing is conducted, specifically, a concave-convex tooth-shaped gluing roller is adopted, the heat sealing face of the paper-plastic composite base material is coated with the POE / PLA composite hot melt adhesive, and the gluing amount is 2.2-2.6 g / m < 2 >; and S4, pre-crosslinking treatment is conducted, specifically, UV irradiation is conducted on the glued base material, the irradiation wavelength is 254 nm, the irradiation time is 0.1-0.2 s, and the surface of the glue layer is preliminarily cured. The paper-plastic packaging gluing and pressing process which is low in gluing amount and gradient in low-temperature pressing, has an antibacterial function and is matched with a thin paper base material is adopted, and the paper-plastic packaging gluing and pressing process has the advantages of being low in glue overflowing rate, high in product percent of pass, capable of improving sanitation performance, stable in bonding performance and better in environmental protection performance.

This invention provides a brazing filler metal, a brazing filler metal preparation method, and a rectifier brazing method. The brazing filler metal includes a first brazing filler metal and a second brazing filler metal. The brazing filler metal preparation method involves uniformly mixing high-temperature alloy powder and brazing binder at a mass ratio of 2:1 to 3:1 to form the first brazing filler metal; and uniformly mixing BNi2 powder and brazing binder at a mass ratio of 10:1 to 15:1 to form the second brazing filler metal. By specifying brazing filler metals with a specific particle size ratio and applying different types of brazing filler metals in different zones, defects such as incomplete welding and porosity that are difficult to control in large-gap welds during processing and assembly are solved, improving the welding quality of welds with both large and small gaps, thereby increasing the product qualification rate.

The application discloses a grey cloth placing tool and method for floor mat production, and relates to the technical field of industrial automation production. The machine frame is provided with an X-axis driving module, a Y-axis driving module and a Z-axis driving module matched with the cloth lifting module and used for driving the cloth lifting module to move on the machine frame. The application has the advantages that the grey cloth lifting, conveying and flattening are integrated through the cooperation of negative pressure adsorption and tension control structure, and wrinkles are effectively inhibited; the double-mode adsorption of negative pressure and high-frequency vibration is adopted, high-permeability and conventional grey cloth are compatible, and the adsorption failure problem is solved; the vibration structure is self-driven by airflow, and no additional power is needed, so that the structure is simple and reliable; the multi-point flexible adsorption is matched with the rotatable mechanism, so that the grey cloth is protected from damage; the three-axis linkage and modular design improve the automation and universality, adapt to efficient continuous production, and improve the production quality, efficiency and equipment applicability of the floor mat.

The invention relates to the technical field of straightening equipment, and discloses an automatic matching straightening machine for shaft workpieces, which comprises a machine body, a plurality of linear sliding rails for a plurality of mechanisms to linearly move are arranged on the machine body, and strip-shaped tooth grooves matched with moving gears are formed in the two sides of the interior of the machine body; one side of the machine body is provided with a PLC (Programmable Logic Controller) control cabinet for calculating input shaft workpiece data information and generating a control signal, and the PLC control cabinet is used for controlling each mechanism on the machine body in an operation process. By adding and arranging the movable detection mechanism, when the shaft workpiece is straightened, the movable detection mechanism adopts a lever type detection structure, can be tightly attached to the surface of the shaft workpiece, sensitively captures bending deformation information of the workpiece, realizes accurate acquisition of deformation, avoids subjectivity and errors of manual detection, and improves the straightening accuracy of the shaft workpiece. And full-length movement detection can be realized along a linear sliding rail, all parts of the shaft workpiece are covered, and the condition of missing detection of a deformation position is avoided.

The application provides a precision machining method for earphone mesh mold forming parts, comprising the following steps: designing a copper electrode three-dimensional design drawing according to an earphone mesh mold forming part three-dimensional design drawing; setting a machining strategy and machining parameters according to the copper electrode three-dimensional design drawing, and generating a numerical control machining program, the machining strategy comprising sequentially performing rough machining, semi-finishing machining and finishing machining on the copper electrode blank; using a precision numerical control machine tool to process the copper electrode blank according to the numerical control machining program to form a copper electrode, in the finishing machining, the inner hole on the copper electrode is machined by using a fifth tool with a diameter of 0.3 mm; screening out qualified copper electrodes according to quality detection standards; using a precision numerical control discharge spark machine to perform electric spark machining according to preset discharge parameters and the qualified copper electrodes, and the part blank is made into an earphone mesh mold forming part. The application can solve the problems of hole deformation and size precision after copper electrode machining, and improve the qualified rate of copper electrodes and earphone mesh mold forming parts.

The application relates to an assembly auxiliary device applied to a printed circuit board. The assembly auxiliary device applied to the printed circuit board comprises a limiting shell and a torsion transmission assembly. The limiting shell is provided with a limiting portion and a containing portion penetrating through the limiting shell. The containing portion is provided with a first opening and a second opening. The first opening is used for inserting an external fastener. The torsion transmission assembly is movably arranged in the containing portion and is used for receiving a torsion provided by an external torsion providing assembly, moving along the extension direction of the containing portion under the action of the torsion, abutting against the fastener and transmitting the torsion to the fastener, so as to assemble the fastener to the printed circuit board. The limiting portion is used for being arranged in a limiting assembly of the printed circuit board. In the above manner, the application can avoid the direct contact between a torsion providing assembly such as a screwdriver and the printed circuit board, reduce the risk of damaging the printed circuit board due to the operation failure of the torsion providing assembly, and is favorable for improving the pass rate of the printed circuit board.

The invention provides a radio frequency signal transmission delay adjusting device, which is characterized by comprising a first outer conductor, a second outer conductor, a first inner conductor and a second inner conductor which are coaxially arranged, the first inner conductor comprises a first step section and a second step section in the axial direction, the first step section is arranged in the first outer conductor, and the second step section is arranged in the second outer conductor; the second outer conductor internally comprises a first inner cavity and a second inner cavity along the axial direction, the first outer conductor is inserted in the first inner cavity, and the second inner conductor is arranged in the second inner cavity; one end, close to the first outer conductor, of the second inner conductor comprises a containing cavity extending in the axial direction, and at least part of the second step section is arranged in the containing cavity in a penetrating mode; an adjusting section is arranged between the end, located in the first inner cavity, of the first outer conductor and the end, close to the first inner cavity, of the second inner cavity, the first outer conductor can drive the first inner conductor to move in the axial direction relative to the second outer conductor, the length, penetrating through the containing cavity, of the second step section is changed, and therefore the length of the adjusting section is adjusted.

The utility model belongs to the technical field of cutting devices, and particularly relates to a drying agent package delivery machine cutter device which comprises a mounting base, a fixed cutter and a movable cutter matched with the fixed cutter for shearing, the whole mounting base is horizontally arranged, the fixed cutter is fixedly arranged below the mounting base, and a plurality of threaded holes are formed in the mounting base in a penetrating mode. The plurality of threaded holes are arranged along the length direction of the fixed cutter; an adjusting screw is in threaded connection with the interior of each threaded hole, and the lower end of each adjusting screw directly abuts against the upper surface of the fixed cutter after penetrating through the mounting base; the adjusting screw is sleeved with a locking nut, and the locking nut is located above the mounting base. The device can flexibly adjust the shearing force, improves the adaptability to drying agents of different specifications, and is simple and reliable in structure and convenient to adjust and operate.

The application discloses a manufacturing method of a spiral baffle plate, which adopts a casting process to integrally form a spiral baffle plate unit, and then splices the integrally formed spiral baffle plate unit to form a large-diameter thin-wall spiral baffle plate which is radially continuous; and heat exchange pipe holes on a plate body of the spiral baffle plate unit are integrally formed in the casting process, and the plate body of the spiral baffle plate does not need to be further opened to form the heat exchange pipe holes. Compared with the production and processing method of the existing spiral baffle plate, the method simplifies the process steps, greatly improves the production efficiency of the spiral baffle plate, and is particularly suitable for manufacturing a spiral heat exchange plate with a small central hole or even without a central hole, and has small operation difficulty, short time consumption and high qualified rate.

This invention provides a nitrogen filling needle structure for vials, comprising a filling needle body, a first through hole penetrating its upper and lower end faces, and a filling needle body gas chamber inside the filling needle body; a top connector communicating with the first through hole at the upper end of the filling needle body; a second through hole penetrating its bottom end face at the bottom of the filling needle body, communicating with the filling needle body gas chamber; a first vent hole on the filling needle body, through which high-pressure gas passes sequentially via the top connector, the first through hole, the second through hole, and the first vent hole; a cap is fixedly installed on the bottom end face of the filling needle body at the top, with an opening at the bottom of the cap, and an annular rubber ring is provided on the inner wall of the cap, the annular rubber ring communicating with the interior of the filling needle body. This invention provides a nitrogen filling needle structure for vials, which can effectively prevent contamination of the liquid inside the vial during nitrogen filling, thereby improving the yield of finished products.

The application provides an optimization management system, method, storage medium and equipment based on steel mesh design, and the optimization management method based on steel mesh design comprises the following steps: obtaining element information of elements of a steel mesh to be opened; generating a design steel mesh according to a steel mesh layer, generating a product number and a version number corresponding to the design steel mesh; generating a steel mesh production file according to the design steel mesh, obtaining a physical steel mesh template corresponding to the steel mesh production file, generating a production template number corresponding to the physical steel mesh template, and storing the physical steel mesh template into a physical steel mesh template library according to the production template number; and putting into production the physical steel mesh corresponding to the physical steel mesh template. The application can establish a connection between steel mesh opening design and production data, thereby improving the qualified rate of the steel mesh opening design meeting the production requirements and guaranteeing the steel mesh quality and welding quality from the source.

This utility model relates to the technical field of biscuit processing equipment, specifically a hard-limit positioning pin mechanism. It includes a frame, a drive shaft located at the center of the top surface of the frame, a turntable mounted on the top of the drive shaft, and positioning components mounted on the outer circumference of the drive shaft. Multiple positioning seats are mounted on the top surface of the frame, circumferentially along the drive shaft. Rotation of the drive shaft causes the positioning components to engage with positioning seats at different positions. In this hard-limit positioning pin mechanism, the engagement of the positioning components and positioning seats forms a hard-limit structure. The arc-shaped design of the positioning head and positioning groove, combined with the preload of a spring, allows for precise engagement when the drive shaft drives the turntable to a preset position. This mechanism directly constrains the positional deviation of the turntable through mechanical hard limiting, effectively solving the problem of cumulative errors caused by speed fluctuations and component wear. It avoids misalignment between the forming cavity and the processing components, fundamentally eliminating uneven distribution of compressed biscuit raw materials and deformation of the shape.

This invention provides a method for controlling the weight of a solid tire carcass and its application, relating to the field of tire carcass technology. The method includes the following steps: (a) weighing the base rubber after molding and comparing it to the standard weight of the base rubber to obtain a weight difference value; (b) correcting the amount of intermediate rubber based on the weight difference value from step (a), weighing the tire carcass after molding the intermediate rubber, and comparing it to the standard weight of the intermediate rubber tire carcass to obtain a weight difference value; (c) correcting the amount of tread rubber used in one stage based on the weight difference value from step (b), weighing the tire carcass after molding the first stage of tread rubber, and comparing it to the standard weight of the first stage of tread rubber tire carcass to obtain a weight difference value; (d) correcting the amount of tread rubber used in the second stage based on the weight difference value from step (c), and molding the tread rubber in two stages to obtain the finished tire carcass. This invention, through segmented weighing and multi-stage correction, gradually offsets the weight errors in each molding stage, achieving a tire carcass weight error of ±0.1 kg, far superior to existing weight control precision.

The utility model relates to a kind of shotcrete flatness control system, by the longitudinal interval multiple cross sections of tunnel are set up steel pipe arch, steel pipe arch is fixed in the surrounding rock inner wall of corresponding cross section, so that steel pipe arch is along the circumferential setting of corresponding cross section of tunnel, and ensure that the inside of steel pipe arch is equal with the chord height of tunnel to be constructed primary support inside surface, so that it can provide shotcrete reference standard using the inside of steel pipe arch, wet spray hand of guniting can easily observe arch top guniting flatness condition according to the inside of steel pipe arch, improve the control of wet spray machine operator to arch top position injection effect, so that the primary support flatness of III grade, IV grade surrounding rock not erecting steel frame section has been obviously improved, improve primary support flatness qualification rate and primary support apparent quality;And by the inside of steel pipe arch control primary support flatness, reduce primary support invasion line, and avoid the lining cavity, insufficient thickness caused by primary support flatness deficiency, provide favorable conditions for later drainage construction and lining construction.

The utility model relates to the technical field of ecological environment-friendly tools, in particular to an ecological environment-friendly slope protection frame and mold, which comprises a plurality of slope protection frame shells, the slope protection frame shells are sequentially spliced and laid on slope edges, two inner cavities are arranged in the slope protection frame shells, and an upper planting area and a lower planting area are arranged in the inner cavities. The upper planting groove and the lower planting groove are the same in structure, and an anti-skid layer is arranged on the inner wall of the upper planting groove. In the ecological environment-friendly slope protection frame and the mold, the upper-layer planting area and the lower-layer planting area are arranged in the slope protection frame shell, compared with a traditional single-layer planting area, the plant growth space is remarkably enlarged, more types and numbers of plants can be planted, more dense vegetation coverage is formed, and the ecological restoration function of the slope protection is enhanced. Meanwhile, the anti-skid layer on the inner wall of the upper-layer planting groove can effectively prevent soil from slipping off after plants are planted, and the stable growth environment of the plants is guaranteed; the bottom water leakage holes facilitate water drainage, and water accumulation is prevented from affecting plant root growth.

The application discloses a die-casting device for window sliding wheel machining, which comprises an operating machine table arranged on the ground, a die-casting base fixedly arranged at the middle of the bottom of the inner cavity of the operating machine table, and a limiting guide rod fixedly arranged at the top of each corner of the die-casting base, and belongs to the technical field of die-casting. The die-casting device for window sliding wheel machining is characterized in that the upper die, the hydraulic rod, the lower die mechanism and the electric telescopic rod are matched to realize efficient and stable die-casting. During die-casting, the structures are cooperatively driven to automatically circulate and flow the cooling liquid, the cooling and shaping are rapidly completed, the processing efficiency is effectively improved, the circulating cooling liquid can drive the inside of the lower die mechanism to generate high-frequency oscillation, the internal bubble defects of the casting are eliminated, the product structural strength and surface quality are improved, meanwhile, the cooling liquid is uniformly disturbed in the die to improve the heat exchange efficiency, the temperature of the cavity is rapidly and evenly balanced, the deformation and cracking of the casting are prevented, the forming precision and product qualification rate are ensured, and the overall structure is simple, stable and reliable in operation.

This invention discloses a method for preparing a novel ultra-high voltage high-performance composite insulating material, belonging to the field of composite insulating material preparation technology. The technical solution includes the following steps: S1, preparing a modified epoxy-silicone rubber composite resin matrix: 40-50 parts by weight of bisphenol A type epoxy resin (E-51) are placed in a reaction vessel, heated to 60-70℃, and continuously stirred at a stirring rate of 300-500 r / min. 10-15 parts by weight of terminal hydroxyl polysiloxane (molecular weight 5000-10000) are added, and the temperature is kept constant for 1.5-2 hours; subsequently, the system temperature is lowered to 40-50℃. The beneficial effects of this invention are: by setting up a resin matrix system of "terminated hydroxyl polysiloxane modified epoxy resin + nano-alumina / boron nitride composite reinforcement," the problem of imbalance between high voltage resistance and aging resistance in existing materials is solved. It exhibits significantly improved dielectric strength, greatly reduced dielectric loss, and excellent high and low temperature cycling performance, meeting the long-life operation requirements of ultra-high voltage equipment.

The application discloses a forming method for concave thin plate corrugated stainless steel parts, which comprises die assembling, stamping buffer layer laying, stamping preforming, stamping forming and shearing correction. By using the forming method, the existing punch is used, in the stamping preforming process, the stamping buffer layer is laid, the step-by-step pressing mode is adopted, the stamping buffer layer can control the material flow problem, so that the material uniformity is achieved; in the stamping forming, the die is replaced, and the one-time pressing forming is adopted, which can effectively solve the technical problem that the boundary of the corrugated area is prone to wrinkling, and can improve the forming efficiency, so as to improve the qualified rate of part forming, ensure the product forming quality, greatly reduce the processing cost, and be applied to the processing of the parts prone to wrinkling, and is convenient to operate and suitable for popularization and application.

The application relates to the technical field of coating devices, and discloses a fireproof layer coating machine for fireproof glass production and a production process, wherein the fireproof layer coating machine for fireproof glass production comprises an equipment frame, a conveying assembly fixedly installed in the equipment frame, a bottom frame mechanism arranged above the conveying assembly and a coating mechanism, and the inside of the bottom frame mechanism supports a glass sample; a three-stage nested floating structure formed by first, second and third sliding sleeves provides a multi-degree-of-freedom alignment capability for a coating roller; when special-shaped glass passes, the coating roller can passively and adaptively float along the curved surface profile of the special-shaped glass, and always adhere to the surface of the glass; meanwhile, the whole coating head is flexibly hung by a plurality of supporting springs, overall buffering is provided, the problems of accumulation at protruding positions and coating leakage at recessed positions are solved, uniform transfer of fireproof coating on a special-shaped surface is ensured, and finally, a high-quality coating with consistent thickness and continuous integrity is obtained.