328results about How to "Improve quality consistency" patented technology

The invention provides an LED packaging material defect detection method, which comprises the following steps: performing image enhancement processing on each layer of separated image to obtain each layer of clear material image; carrying out local fine scanning on the identified cross defect area to obtain micron-sized three-dimensional structure data, and reconstructing fine morphology characteristics of the cross defect; according to the reconstructed cross flaw structure, combining various material performance parameters pre-stored in a material database to simulate and calculate the influence of flaws on the LED performance, including optical, thermal and mechanical properties; and judging the position, the size, the type and the influence degree on the performance of the flaws, and carrying out quantitative scoring on the overall quality of LED packaging to obtain a final detection result and quality grade judgment.

The invention discloses a force and position monitoring and analyzing system applied to a press machine, and relates to the technical field of force and position monitoring of the press machine, the force and position monitoring and analyzing system comprises a data acquisition module which is provided with a force sensor and a displacement sensor, and force and displacement data of the press machine in the punching process are monitored and acquired in real time through the force sensor and the displacement sensor. According to the force and position monitoring and analyzing system applied to the press machine, force and displacement data are accurately collected in real time through the data collecting module, the optimal action parameters of the press machine can be calculated, and the punching action of the press machine is accurately controlled; in this way, the key parameters in the stamping process can accurately reach the preset target, the product quality problem caused by parameter deviation is effectively avoided, and the quality stability and consistency of products are greatly improved; the system can quickly adjust action parameters of the press machine according to real-time monitoring and analysis results, so that the stamping process is always kept in an optimal state, time waste caused by links such as debugging and reworking is reduced, and the production efficiency is remarkably improved.

The invention relates to the field of laser cutting control, in particular to a laser cutting control method, device and equipment for a rock plate and a storage medium. The method comprises the following steps: acquiring a laser cutting reflection signal based on an optical fiber detector; digital processing is conducted on the laser cutting reflection signals, light intensity distribution fitting is conducted, and a light intensity distribution diagram is constructed; light distribution topological structure analysis is carried out on the light intensity distribution diagram, and a real-time cutting morphology point cloud model is constructed; performing real-time morphology deviation comparison on the real-time cutting morphology point cloud model based on a preset theoretical rock plate cutting morphology to obtain a morphology deviation parameter; acquiring real-time operation state parameters of the laser cutter; and cutting deviation compensation calculation is conducted on the real-time operation state parameters of the laser cutter based on the morphology deviation parameters, a dynamic cutting control strategy is obtained, and response data in the laser cutting correction process are continuously monitored. According to the laser cutting control system, efficient and accurate laser cutting control is achieved, and the laser cutting deviation is effectively reduced.

The invention discloses a method for degrading vomitoxin in a corn deep processing process, and relates to the technical field of corn deep processing, and the method specifically comprises the following steps: obtaining temperature dynamic distribution information of corn slurry in each region, judging whether the temperature of the corn slurry in each region is too fast or too slow or not, and if yes, judging whether the temperature of the corn slurry is too fast or too slow or not; dividing each area into a temperature acceleration area, a temperature equalization area and a temperature delay area according to the judgment result; based on the division result of each area, an adjustment mechanism of heating power and time is constructed, and different temperature adjustments are respectively carried out on the temperature acceleration area, the temperature equalization area and the temperature retardation area; in the process that the adjustment mechanism adjusts the temperature of each area, whether the temperature adjustment effect of the adjustment mechanism in each area reaches the expectation or not is evaluated, and the adjustment mechanism is optimized according to the evaluation result. The problem that the temperature is not uniform in the corn slurry heating process is solved, and the effect of uniformly degrading vomitoxin is achieved.

The invention relates to the technical field of process management, in particular to a sealing integrated collaborative process optimization method and system. The method comprises the following steps: obtaining sealing process data; performing sensor data acquisition according to the sealing process data to obtain a multi-modal sensor acquisition data set; performing data preprocessing on the multi-modal sensor acquisition data set to generate a standard multi-modal sensor acquisition data set; performing process flow analysis on the sealing process data to generate sealing process flow data, the sealing process flow data including a sealing flow, a cover closing flow and a cover pressing flow; and performing intelligent process modeling on the sealing process, the cover closing process and the cover pressing process to generate a process procedure mathematical model. According to the invention, through multi-modal data acquisition, detailed process flow analysis, real-time monitoring and dynamic adjustment strategies, the flexibility and adaptability of sealing process production process management are improved.

The invention discloses a die-casting machine injection speed control method and system based on artificial intelligence, and relates to the technical field of die-casting process control. Performing time-space domain feature extraction on the multi-dimensional data by using a deep learning model, and analyzing the filling state, the flowing path and the ideal injection speed of the molten metal based on the time-space domain features; according to the filling state and the flowing path of the molten metal and in combination with the ideal injection speed, a thermal field imbalance area in the mold is recognized; according to the thermal field imbalance area in the die, the operation state of the die-casting machine is adjusted in real time, and die temperature distribution and the flowing speed of molten metal are obtained; adjusting the injection speed of the die-casting machine in real time according to the temperature distribution of the die and the flowing speed of the molten metal; according to the method, the time-space domain features of the multi-dimensional data are extracted through the deep learning model, the filling state and the flowing path of the molten metal are accurately analyzed, the injection speed is adjusted in real time, and the quality consistency of the die casting is remarkably improved.

The invention discloses an ellipsoid curved glass curtain wall installation method based on BIM cooperative positioning. The ellipsoid curved glass curtain wall installation method comprises the five steps of building a BIM model, determining control points, conducting field measurement and positioning, installing curtain wall units and conducting cooperative positioning adjustment. Ellipsoid parameters and glass unit sizes are determined through a BI model, key control points are selected, field measurement is carried out, actual and theoretical coordinates are compared, installation is started from the center of the bottom, the position is monitored and adjusted in real time, and precision is ensured. According to the method, efficient and accurate installation of the ellipsoid curved glass curtain wall can be achieved, and the construction efficiency and the engineering quality are improved.

The invention discloses a processing method of a spinneret plate, which comprises the following steps: acquiring a plate material, and pretreating the plate material to obtain a blank of the spinneret plate; the blank is installed on an automatic punching machine tool, punching is conducted on the same position of the blank for at least three times, modification treatment is conducted after punching of the blank is completed every time, and the spinneret plate is obtained. The invention further discloses the lyocell spinneret plate. According to the spinneret plate, the same position in the spinneret plate blank is subjected to multiple times of punching and other operations, spinneret orifices formed through multiple times of punching are low in roughness and higher in size precision, meanwhile, the strength of materials in the orifices is enhanced, and the problems that in spinning production, yarn breaking and doubling are likely to happen, adhesion is likely to happen, and the plate replacement cleaning difficulty is large can be solved.

The invention discloses an intelligent PCB production line intelligent regulation and control method and system for an unmanned workshop, and particularly relates to the field of intelligent control, and the method comprises the steps: S1, PCB production line information text collection, S2, data standardization processing, S3, PCB production information processing, S4, PCB production line control judgment, and S5, PCB production line control judgment result feedback. According to the method, a mathematical model is constructed through big data analysis and a machine learning algorithm, the real-time health state and the inventory level state of the equipment are accurately quantified, full-period digital management of the PCB production equipment and the inventory level is realized, meanwhile, the production quality of products is predicted in real time through the production quality prediction model, and the product yield and the quality consistency are improved. According to the method, a production progress optimization model is constructed based on discrete event simulation and reinforcement learning algorithms, the relation between PCB production process flow logic and resource competition is accurately simulated, and optimization process sorting, equipment management and inventory management strategies are learned in real time.

The invention discloses a nickel-silicon-boron nitride abradable sealing coating and application and a preparation method thereof, the abradable sealing coating comprises a bottom layer material in direct contact with a base material and a surface layer material located on the surface of the bottom layer material, the bottom layer material is nickel-chromium alloy, and the surface layer material is nickel-silicon-boron nitride. When the coating is prepared, automatic plasma spraying equipment is adopted, firstly, nickel-chromium alloy powder is adopted as a bottom layer material to be sprayed on the surface of a base material, and then nickel-silicon-boron nitride powder is adopted as a surface layer material to be sprayed on the surface of the bottom layer material. The prepared nickel-silicon-boron nitride abradable sealing coating can be applied to low-pressure turbine discs, high-pressure turbine guiders and sealing seats of aero-engines and gas turbines. According to the method, a traditional manual flame spraying operation mode is replaced, the safety is improved, the material utilization rate and the spraying efficiency are improved, the preparation period is shortened, the material cost is reduced, and the structure property, the bonding strength and the thermal shock resistance of the abradable seal coating are improved.

The invention relates to the technical field of precision casting, and discloses a wax pattern module combination device and a combination method thereof.The wax pattern module combination device comprises a rack and further comprises idler wheels arranged on the rack and used for assisting the rack in moving; the lifting mechanism comprises a working platform which is fixedly arranged on a sliding plate and is used for placing a lower die; the rotating mechanism is assembled on the machine frame, and a gear transmission set included in the rotating mechanism is connected with a connecting piece used for being connected with an upper die; the lifting mechanism and the rotating mechanism are matched with each other, so that the wax mold can be accurately lifted and adjusted and can rotate by 360 degrees, and manual mold turning is not needed. The machine frame is further provided with a purification mechanism capable of discharging wax smoke generated when the wax mold is assembled, the purification mechanism is matched with an air inlet mechanism arranged on the machine frame to conduct air injection on the wax mold so that the temperature of the wax mold can be maintained at a normal value, shrinkage of the wax mold can be controlled, and meanwhile the effect of maintaining balance of internal pressure and external pressure of a workshop is achieved.

The invention relates to the technical field of electric power communication module meter reading test, and discloses an electric power communication module meter reading test method and system, and the method comprises the steps: sending a to-be-tested module into a conveyor belt, carrying out the light supplement after the to-be-tested module enters a detection region, collecting an image, and recognizing display data. If the data display is abnormal, further judging whether bright spots exist or not, and if not, removing abnormal modules; and if yes, adjusting the light supplementing strategy and re-collecting the image until the bright spots disappear. And comparing and synthesizing the newly collected image and the original image, and determining whether the ammeter is qualified after determining that the data is accurate. Light supplementing adjustment is based on analysis of the bright spot position, the light supplementing effect is optimized by controlling the position of a light supplementing lamp, and the accuracy of detection data is ensured. The method can effectively improve meter reading accuracy and reduce manual intervention, and is suitable for automatic production line detection of intelligent electric meters.

The invention discloses lyocell spinning equipment which comprises a coagulating bath tank used for containing coagulating bath liquid; at least partial section of the wire guide pipe horizontally extends, one end of the wire guide pipe is provided with a liquid inlet communicated with the coagulating bath tank, and the other end of the wire guide pipe is provided with a wire outlet; the spinning nozzle is arranged above the coagulating bath tank, a spinning opening of the spinning nozzle faces a tank opening of the coagulating bath tank, and tows sprayed out of the spinning opening enter the coagulating bath tank to be preliminarily coagulated, then enter the yarn guide pipe to be coagulated and then are pulled out of a yarn outlet of the yarn guide pipe. According to the invention, through the cooperation of the coagulating bath tank, the spinning nozzle and the wire guide pipe, the optimized design of the spinning equipment is realized, the spinning nozzle sprays the fibers into the coagulating bath tank for preliminary solidification, then the tows enter the wire guide pipe, and the horizontal extension section of the wire guide pipe prolongs the retention time of the fibers in coagulating bath liquid, so that the fibers are ensured to be fully solidified; and the mechanical property and the quality consistency are improved.

The invention discloses an ultra-thin ceramic tile batching optimization method and system based on real-time data acquisition, and relates to the technical field of ultra-thin ceramic tiles. Comprising the following steps: S1, obtaining a final adjustment parameter according to the difference and external environment data; s2, comparing a simulation result corresponding to the adjustment parameter with a simulation result corresponding to a standard formula, if the comparison results are the same, directly executing the next step, otherwise, returning to the previous step; and S3, determining the dosage of each raw material according to the raw material formula corresponding to the compared simulation result, and adjusting the production formula dosage of the current batch of raw materials according to the dosage. According to the present invention, the adjustment parameter is obtained, and the current formula is compared with the standard formula according to the adjustment parameter and the simulation model, such that the use amount of each raw material in the corresponding formula can be determined on the premise of ensuring the production result of the current batch of raw materials.

The automatic conveying device for grinding ball production comprises a roller device, the roller device comprises a roller, and the roller can rotate with the axis of the roller as the rotation axis; the spiral conveying pipes are fixed to the inner wall of the roller, grinding ball conveying grooves are formed between adjacent sections of the spiral conveying pipes located on the same side of the roller, air suction hole sets are formed in the side walls of the spiral conveying pipes, and the spiral conveying pipes are heat conduction pipes; the air suction assembly is connected with one end of the spiral conveying pipe and used for sucking an inner cavity of the spiral conveying pipe; and the heat exchange facility is arranged in the spiral conveying pipe, the heat exchange facility can transfer heat to the spiral conveying pipe, and the heat is transferred to the inner cavity of the roller through the spiral conveying pipe, or the heat exchange facility can absorb the heat in the inner cavity of the roller through the spiral conveying pipe. The cooling speed and temperature of the grinding balls can be accurately controlled in the conveying process, quenching node temperature fluctuation caused by environment temperature changes is reduced, and therefore the quality consistency of the grinding balls is improved.

The invention relates to an integrated carbon / carbon composite material crucible containing a pyrolytic carbon transition coating, and belongs to the technical field of thermal field parts for monocrystalline silicon. The crucible comprises a carbon / carbon composite material crucible body, a glassy carbon coating, a pyrolytic carbon transition coating and an yttrium oxide coating, wherein the glassy carbon coating not only has a good combination effect with the carbon / carbon composite material crucible body, but also can prevent carbon from escaping; the thermal expansion coefficient of the pyrolytic carbon transition coating is close to that of the glassy carbon coating, and the combination effect of the pyrolytic carbon transition coating and the yttrium oxide coating is good; the yttrium oxide coating has excellent thermal stability and excellent silicon erosion resistance, and can ensure the purity of molten silicon in the single crystal drawing process; the carbon / carbon composite material crucible body is formed by densifying a carbon fiber prefabricated body which is formed by needling and laying a pure net tire sprayed with resin, and the inner surface of the carbon / carbon composite material crucible body is a net tire which is wholly approximately isotropic, so that the overall mechanical strength of the crucible can be ensured, and a good combination effect of the crucible and a subsequent functional coating can also be ensured.

The utility model relates to the technical field of nest bamboo shoot harvesting, and provides an integrated harvester for harvesting, leaf-removing and bundling of asparagus lettuce, which comprises a rack, and a rough peeling and harvesting mechanism, a transmission mechanism, a fine peeling mechanism, a discharging mechanism and a bundling mechanism which are arranged on the rack. By means of the innovative design of the rough stripping and harvesting mechanism, the conveying mechanism, the fine stripping mechanism, the discharging mechanism and the bundling mechanism, automation, precision and high efficiency of asparagus lettuce harvesting are achieved. According to the design of the equipment, growth characteristics of crops and various requirements in the harvesting process are considered, through optimization of a mechanical structure, the harvesting efficiency is remarkably improved, the application range is remarkably widened, meanwhile, the quality of harvested asparagus lettuce is guaranteed, and the requirements of modern agricultural production for high efficiency, low energy consumption, high safety and low cost are met.

The invention belongs to the technical field of processing and quality control of traditional Chinese medicine decoction pieces, and particularly relates to a processing technology of simmered polygala tenuifolia decoction pieces, an HPLC fingerprint spectrum of the simmered polygala tenuifolia decoction pieces, a construction method of the HPLC fingerprint spectrum and an identification method of the HPLC fingerprint spectrum. The processing technology of braised polygala tenuifolia is standardized, parameterization of the processing technology is achieved, and the adopted electromagnetic braised medicine machine is safe, stable in performance, environmentally friendly, controllable in parameter, good in batch-to-batch quality consistency of decoction pieces and suitable for industrial production. The method solves the problems of fragility of containers, poor safety, high labor intensity, uneven quality and the like in the traditional braising method, is green and environment-friendly, meets the GMP (Good Manufacturing Practice) requirements, and can improve the production efficiency by more than 20%. The invention further provides the HPLC fingerprint spectrum, a construction method of the HPLC fingerprint spectrum and an HPLC fingerprint spectrum identification method. The simmered polygala tenuifolia decoction pieces can be scientifically identified through the fingerprint spectrum.

The invention provides a civil air defense equipment air tightness detection system, which relates to the field of air tightness detection, and comprises an air supply system used for providing an air source for a sealed space, and a detection system connected in series between the air supply system and the sealed space and used for detecting the air pressure in the sealed space and the air flow fed into the sealed space by the air supply system, an air pressure signal and a flow signal are output; the processing module is electrically connected with the detection system and used for receiving the air pressure signal and the flow signal and controlling the air supply amount of the air supply system based on the air pressure signal and the flow signal so that the air pressure in the sealed space can reach a preset value. Through the cooperation of the air supply system and the detection system, the air pressure of the sealed space is accurately controlled, the performance of the civil air defense equipment can be rapidly and accurately detected, the operation steps are reduced, the detection process is simplified, the detection efficiency and the quality consistency are remarkably improved, and the requirements of large-scale production and strict quality assurance are met.

The invention discloses a cable core wire multi-layer strip dragging machine, and belongs to the technical field of cable manufacturing equipment.The cable core wire multi-layer strip dragging machine comprises a bottom plate, a vertical plate, limiting guide wheels, a bottom shell, a pop-up assembly and a sliding plate, the vertical plate is fixedly connected to one side of one end of the upper surface of the bottom plate, and the three sets of limiting guide wheels are fixedly connected to one side of the surface of the vertical plate; a tension deviation rectifying guide wheel is movably connected to the middle of one side of the surface of the vertical plate, after a wrapping tape is used up, the pop-up assembly pops up a used wrapping tape object, the push-off assembly pops up the wrapping tape object synchronously, and finally the switching assembly automatically switches to the other set of wrapping tape object for use, so that the purposes of greatly improving the equipment operation efficiency, reducing the labor intensity, reducing the labor intensity and the like are achieved. And the operation efficiency is improved.

The invention discloses a control and regulation system for hemostatic gauze production, which comprises a raw material supply control module, a production process monitoring module, an intelligent regulation execution module, a quality detection and feedback module and a human-computer interaction interface, and is characterized in that the raw material supply module is used for accurately controlling raw material supply and is provided with a material level sensor and a stirring device; the conveying speed is accurately regulated and controlled through a formula, the uniformity of raw materials is ensured, the production process monitoring module monitors key parameters in real time, the sensor wirelessly transmits data, and the intelligent adjusting module automatically adjusts equipment operation parameters. The quality detection module detects products and feeds back results, and a man-machine interaction interface is convenient to operate. Through cooperation of all the modules, raw material supply is accurately controlled, production parameters are monitored in real time, equipment operation is intelligently adjusted, product quality is strictly detected, convenient interaction is provided, the production quality and efficiency of hemostatic gauze are improved, cost is reduced, and high-quality and reliable hemostatic products are provided for the medical field.

The invention provides a pipeline welding real-time feedback control method and system based on machine vision. According to the method, multi-modal data such as a three-dimensional point cloud, a temperature field and a welding seam image are synchronously collected, and key characteristics such as a pose deviation gradient, a cooling rate curve and a welding seam size sequence are extracted after time sequence alignment, filtering and correction fusion. And a CNN and LSTM mixed adaptive deep learning model is utilized to analyze the welding quality state in real time, and sub-optimal parameters are dynamically optimized based on a reinforcement learning strategy, or a three-level response mechanism including heat reduction input, expert knowledge base matching and precise repair is triggered to process defect early warning. The system has an incremental learning capability and can be self-optimized along with a control period. The full-flow intelligent monitoring, real-time feedback and self-adaptive accurate control of the welding process are achieved, and the welding quality and the automation level are remarkably improved.

The present invention relates to the technical field of drying devices, and specifically to a drying device and a drying method for composite fabric production, comprising a high-efficiency quick-drying device installed inside a drying box, the high-efficiency quick-drying device comprising a laminating spraying and pressing device, a laminating suction device, a reflux dehumidification device, a heating device and a synchronous clamping device, the synchronous clamping device being installed on the drying box, the laminating spraying and pressing device and the laminating suction device being symmetrically installed on the synchronous clamping device, the reflux dehumidification device being arranged above the laminating suction device, the input end of the reflux dehumidification device being connected to the output end of the laminating suction device, the reflux dehumidification device being used for filtering and recovering heated gas, the heating device being arranged beside the reflux dehumidification device, the input end of the heating device being connected to the output end of the reflux dehumidification device, the output end of the heating device being connected to the input end of the laminating spraying and pressing device, the present invention can effectively save energy consumption and reduce costs, while improving drying efficiency and drying quality.

The utility model discloses an impeller slope hole processing jig, which relates to the field of impeller processing, and comprises an impeller, a support seat, an impeller positioning shaft, a balance hole drill jig and an opening pressure plate, the impeller is sleeved at one end of the impeller positioning shaft through a hub, and the other end of the impeller positioning shaft is matched and positioned with the support seat; the balance hole drill jig is arranged on the hub in a sleeving mode and pressed through the open pressing plate, and then the open pressing plate and the supporting base are locked and fixed through the locking bolt. The lower surface of the balance hole drilling jig and a cover plate inclined face on the impeller rear cover plate are attached and positioned, a guide hole is formed in the balance hole drilling jig in the axial direction of the impeller in a penetrating mode, and a machining hole is drilled in the corresponding position of the cover plate inclined face through the guide hole. The mode that a balance hole in the inclined face of the impeller is drilled through manual visual positioning operation is omitted, and operation difficulty and labor intensity are reduced; the machining and positioning mode of the balance hole in the inclined face of the impeller is changed, and controllability and quality consistency of hole position precision of the balance hole are improved.

The invention discloses similar test block forming equipment for a roadway similar simulation experiment and a manufacturing method. The similar test block forming equipment comprises a lower forming die, and an upper pressurizing die for pressurizing and forming a similar material in the lower die at a constant pressure is arranged above the lower forming die; and the pressurizing upper die is connected with a pressurizing control device for setting a critical pressure value during pressurizing according to mechanical parameters of the standard test block and setting a critical position to control the pressurizing upper die to move and pressurize. According to the forming equipment, similar materials are pressed and formed into required similar test blocks through the pressurizing upper die capable of providing constant pressure, so that the large mechanical property difference of the similar test blocks caused by inconsistent manual tamping mode and tamping force in the similar test block manufacturing process is avoided; therefore, the reliability and the accuracy of the experimental result of the similar simulation experiment are improved.

The invention provides a method for promoting growth of dysprosium scandate single crystals, which comprises the following steps: preparing raw materials: uniformly mixing the raw materials, and putting into a crucible; setting growth conditions: putting the crucible filled with the raw materials into a high-temperature furnace, and setting temperature gradient, pressure and growth speed; growing by a lifting method: in the growth process, slowly lifting the seed crystal from the molten raw material at a constant speed through a lifting device, and controlling the cooling rate of the crystal to promote the growth of the single crystal; real-time weighing monitoring: in the upward lifting process, carrying out real-time weighing monitoring on the growing single crystal by using a high-precision weighing device, and adjusting growth parameters to maintain the stability and uniformity of the quality of the single crystal; compared with the prior art, the method has the following beneficial effects that by controlling the growth speed and the temperature gradient, defects and internal stress caused by thermal stress in the crystal growth process can be effectively reduced, and the integrity and the mechanical strength of the crystal are improved.

This invention provides a feeding mechanism for a biological tissue sample staining device, including a translational feeding assembly, a sample slide feeding lifting assembly, a sample slide feeding heating chamber, and a microscope slide vertical support. The translational feeding assembly has a translational feeding platform capable of holding multiple microscope slide vertical supports. Multiple microscope slides can be vertically fixed in an array within each microscope slide vertical support, with each slide spaced apart. The sample slide feeding lifting assembly cooperates with the translational feeding platform. The sample slide feeding heating chamber is positioned above the sample slide feeding lifting assembly, and the sample slide feeding lifting assembly can reciprocate between the translational feeding platform and the sample slide feeding heating chamber. The beneficial effect of this invention is that it can avoid the risk of cross-contamination between microscope slides.

The bending device comprises a fixed seat and a base, the base is placed in a bench vice and clamped, the fixed seat is fixed to the base, a female die is fixedly arranged on one side of the upper surface of the fixed seat, a guide seat is fixedly arranged on the other side of the upper surface of the fixed seat, and a male die matched with the female die is arranged between the female die and the guide seat. One end of the screw penetrates through the guide seat to be fixedly connected with the male die, and the other end of the screw is connected with the handle seat on which the handle is fixedly mounted. The bending device is easy and convenient to operate, light in structure, high in working efficiency and good in quality consistency, bending of various thin-wall materials can be met, parts can be extruded and formed into various shapes by changing the shape of the female die and the shape of the male die, and the applicability is wide.

The application provides a preparation method of a diphenylfluorene polyether. The method uses diphenylfluorene as a substrate, butylene oxide as an epoxide monomer, toluene as an organic solvent, and under the action of a composite catalyst, reacts at 110-200 DEG C for 2-6 hours to obtain the diphenylfluorene polyether. The composite catalyst is obtained by reacting a porous aromatic skeleton with a bromoalkyl quaternary ammonium salt to obtain a quaternary ammonium salt functionalized porous aromatic skeleton, and finally, a basic catalyst is limitedly encapsulated in the pore channel of the quaternary ammonium salt functionalized porous aromatic skeleton by electrostatic attraction. The catalyst of the method can be recycled and reused, and the yield retention rate is greater than or equal to 92% after the composite catalyst is used for 5 cycles, and the method is suitable for optical display, high-frequency circuit board, semiconductor packaging and other fields.

This invention discloses a large-stroke fabric storage mechanism for a drum vulcanizing machine. The fabric storage mechanism includes a fabric storage frame, an adaptive fabric storage mechanism mounted on the frame, and a winding mechanism corresponding to the output end of the adaptive fabric storage mechanism. The adaptive fabric storage mechanism includes a first roller group and a second roller group arranged opposite to each other, and a roller group moving mechanism for driving one roller group to move or driving both roller groups to move synchronously in opposite directions or relative to each other. A tension monitoring mechanism for monitoring fabric tension is provided at the input end and / or output end of the adaptive fabric storage mechanism. The control system controls the roller group moving mechanism based on the data from the tension monitoring mechanism. This invention can automatically adjust the distance between the first and second roller groups based on tension feedback, achieving large-stroke fabric storage and constant tension control, ensuring continuous operation of the production line. Furthermore, a secondary fabric storage mechanism and a stopping mechanism can be set to meet the needs of non-stop roll changing and larger buffer capacity. It has advantages such as compact structure, high degree of automation, large fabric storage stroke, and stable product quality.