3960results about How to "Improve pass rate" patented technology

The invention discloses an intelligent textile production line control method and system, and relates to the technical field of industrial automation, and the method comprises the steps: collecting operation data in a textile production process in real time, and carrying out the data preprocessing; dynamically adjusting process parameters of the textile production line based on the preprocessed data; detecting the quality state in the textile production process in real time, and adjusting the operation of the production line based on the detection result; constructing a multi-feature fusion fault prediction model, and predicting the operation state of the production line equipment; potential faults are recognized in advance according to prediction results, and the operation mode of the production line is adjusted. The method combines multi-feature fusion analysis, dynamically optimizes the equipment operation state, identifies and adjusts potential faults in advance, improves the production quality and efficiency, reduces the maintenance cost and the shutdown risk, is significantly superior to a traditional method, and provides powerful technical support for intelligent upgrading of the textile industry.

The invention discloses an automatic monitoring method and system for metal plate laser cutting operation, and relates to the technical field of laser cutting monitoring methods. The invention provides an automatic detection method for metal plate laser cutting operation. The automatic detection method comprises the following operation steps that the cutting length error rate and the laser fluctuation rate of a metal plate within a preset time period are obtained; evaluating an abnormal score according to the cutting length error rate and the laser fluctuation rate; if the abnormal score is greater than a preset threshold value, acquiring image information of the metal plate; evaluating a cutting quality score according to the image information; if the cutting quality score is greater than the target score, outputting an abnormal score misjudgment result, and tracing a misjudgment reason; and if the cutting quality score is smaller than the target score, obtaining a cutting defect type, and adjusting a cutting strategy.

The invention relates to the technical field of wire harness production, and particularly discloses an intelligent monitoring management system for a wire harness production line. Comprising a wiring harness terminal crimping process database module, a wiring harness terminal crimping text data acquisition module, a wiring harness terminal shape text data processing module, a wiring harness terminal pressure text data processing module, a wiring harness terminal crimping process analysis module and an error correction analysis adjustment module. A wire harness terminal crimping management judgment module; and a wire harness terminal crimping man-machine interaction module. According to the invention, text data acquisition and preprocessing are carried out on a wiring harness terminal crimping process link, a first monitoring index and a second monitoring index are obtained by analyzing the shape of the wiring harness terminal and the crimping pressure of the wiring harness terminal, and the terminal shape change and the pressure change in the terminal crimping process are monitored in real time; defective products can be found in time and alarm shutdown can be triggered, so that the time and the labor cost of manual inspection are reduced, and the production efficiency is remarkably improved.

The invention discloses a fresh flower selling management system and method based on a block chain technology, and relates to the technical field of fresh flower management. A data acquisition module acquires real-time data of a fresh flower planting link and a logistics transportation link, transmits the real-time data to a block chain storage module, and binds an identifier of a fresh flower; the block chain storage module is used for storing the fresh flower information and storing the data of the full life cycle of the fresh flowers in a distributed account book; the user access module is used for checking a display legend of the fresh flower and related information of the fresh flower at a user side, and the intelligent contract module is used for generating order information and carrying out payment settlement and automatic account division; the inspection module is used for inspecting flower quality and flower information; and the abnormity monitoring and feedback module is used for timely recording and sending notifications when abnormity is found in the planting, transportation or sales process, and quickly positioning problem nodes. According to the method, the transparency of the whole flow of fresh flower planting and transportation is improved, the data security and credibility are ensured, and rapid traceability is realized.

The invention discloses a stamping production process self-adaptive control method, a stamping production line and a program product, and relates to the technical field of stamping machining. The method comprises the steps that stamping production data collected by a data collection unit are received, and the stamping production data comprise one or more of drawing inflow, die surface temperature, lubricating oil amount, closing height, blank holder force, forming force and material performance parameters; determining a quality performance prediction condition of the product based on the stamping production data; determining to-be-optimized data from the stamping production data according to the quality performance prediction condition; stamping process optimization parameters are determined according to the to-be-optimized data; and the stamping process optimization parameters are sent to a stamping controller of the stamping equipment, so that the stamping controller adjusts the stamping action of the stamping equipment according to the stamping process optimization parameters. Intelligent and automatic management of the stamping production line can be achieved, the production efficiency is improved, and the defective rate is reduced.

The invention relates to a stator assembly production line and an assembly method. The stator assembly production line comprises a rack; the feeding structure comprises a feeding rotary disc rotationally arranged on the top of the rack, a supporting assembly annularly arranged on the top of the feeding rotary disc, an infusion disc fixed to the top of the rack and located on one side of the feeding rotary disc, and a feeding assembly erected on the top of the supporting assembly and the top of the infusion disc. The gluing structure comprises a gluing rotating disc rotationally arranged at the top of the rack, a gluing disc annularly arranged at the top of the gluing rotating disc and a gluing assembly arranged on the outer side of the gluing rotating disc, the feeding assembly sucks the stator pieces in the infusion disc and places the stator pieces on the gluing disc, and the gluing assembly is used for gluing the upper surfaces of the stator pieces; the stator assembly production line is higher in universality, the transfer, bonding and press-fitting efficiency of the stator pieces is improved, the situation that press-fitting is not in place or excessive press-fitting does not occur, and the qualified rate of finished stators is increased.

The invention discloses a fixing device for automatic circuit board production equipment, which comprises a base, and the bottom of the base is supported by supporting legs. The invention relates to the technical field of circuit board production, two ends of a circuit board are erected on a conveying belt, the conveying belt drives the circuit board to move, when the circuit board moves to a processing position, a driving mechanism drives sliding blocks on two sides to get close to each other, and the sliding blocks drive clamping rods to get close to each other synchronously; the clamping rods overcome the elastic force of the springs to move upwards when getting close to each other through the slopes, the tops of the clamping rods move to the position above the circuit board, the clamping rods can clamp the two sides of the circuit board, the four sides of the circuit board can be limited at the same time in cooperation with the limiting wheels, and then the four sides of the circuit board can be fixed after the circuit board is conveyed to a machining position; and the circuit board can be fixed to the dead center of a machining position, the stability of the circuit board during machining is effectively improved, the circuit board is prevented from shaking during machining, and the percent of pass of circuit board machining is effectively improved.

The invention discloses a wear-resistant and high-temperature-resistant synchronous belt and a preparation method thereof. The wear-resistant and high-temperature-resistant synchronous belt comprises a synchronous belt framework and a synchronous belt rubber sheet, the synchronous belt rubber sheet is prepared from the following raw materials: a fluorosilicone thermoplastic polyurethane elastomer containing a benzene ring structure, an amino-containing hyperbranched liquid crystal polymer, methyl vinyl phenyl silicone rubber, epoxidized natural rubber, molybdenum sulfide nanosheets, reinforced fibers, bis (1-vinyl imidazole-2-) ketone, 2-acrylamido-2-methylpropanesulfonic acid, 4, 4 '-difluoro-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1 The high-temperature-resistant rubber is prepared from 2, 6-hydroxy-2-cyanobenzothiazole, bis (3-aminophenyl) 3, 5-bis (trifluoromethyl) phenylphosphine oxide, a catalyst, a coupling agent, a vulcanizing agent, an anti-aging agent, a scorch retarder and a lubricating agent. The synchronous belt is good in mechanical property, sufficient in high-temperature resistance and cold resistance, good in wear resistance and excellent in aging resistance and flame retardance.

The invention relates to the technical field of textile, in particular to a digital textile equipment management method based on big data, and the method comprises the following steps: 1, an equipment connection and data initialization stage: checking the data interface type of equipment in each link of a textile process, and connecting the data interface type to a workshop data collection network, establishing an electronic file for each device, setting initial data acquisition parameters, and carrying out pre-operation test and calibration on the devices; 2, a production process monitoring and data recording stage; according to the scheme, the equipment performance evaluation model is established by using a big data analysis technology, multiple factors such as energy consumption efficiency, a production stability index and an equipment failure rate trend are comprehensively considered, and the equipment performance is comprehensively and accurately evaluated, so that sudden equipment failures are effectively avoided, the risk of production interruption is reduced, and the production efficiency is improved. The overall management efficiency and the operation stability of the equipment are improved, the continuity of the production process is guaranteed, and the cost increase caused by equipment faults is reduced.

The invention relates to a flame-retardant inorganic quick-setting material and a preparation method thereof, and the flame-retardant inorganic quick-setting material is prepared from the following raw materials: sulphoaluminate cement, aluminum-magnesium hydrotalcite, phosphorus slag powder, waste PBO fiber, an accelerator, a water reducer, a functional auxiliary agent, and 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone. The functional auxiliary agent comprises structural units introduced by the following monomers: 3-[N, N-dimethyl-[2-(2-methylpropyl-2-enoyloxy) ethyl] ammonium] propane-1-sulfonic acid inner salt, diphenyl (4-vinyl phenyl) phosphine oxide, 1, 3-bis (oxirane methyl)-5-(2-allyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone, 10-(4-vinyl phenyl)-10H-phenoxazine and itaconic acid. The material is high in strength, remarkable in rapid hardening and flame-retardant effect, and safe and environment-friendly to use.

The invention discloses an intelligent control system and method for production and processing of a photovoltaic panel, and relates to the technical field of intelligent control. During operation of the system, key data involved in the production process of the photovoltaic panel is collected, a light-transmitting effect data set, a durability data set and an electrical performance data set are generated and preprocessed, and a multivariate data analysis algorithm is applied to obtain a data set; and after calculation, obtaining a quality index Zlzs of the agricultural photovoltaic panel, receiving an analysis result of the data processing module, and performing real-time quality monitoring on the photovoltaic panel subjected to production process optimization by adjusting a material ratio, production environment parameters and a process flow. A quality index Zlzs of an agricultural photovoltaic panel is compared with a preset first quality qualification threshold value M and a preset second quality qualification threshold value N, potential quality problems in production are identified, a quality evaluation strategy scheme is obtained, an evaluation result is fed back to a production process optimization module and a data processing module, and a closed-loop control system is formed. And continuous optimization and quality improvement are realized.

The invention relates to the technical field of lithium iron phosphate grinding, in particular to a grinding device for lithium iron phosphate production and a grinding method.The device comprises a tank body, a driving assembly and a first grinding assembly, a tank cover is installed at the top of the tank body, the driving assembly comprises a driving motor installed at the top of the tank cover, and a rotating shaft is fixedly arranged on an output shaft of the driving motor; the rotating shaft vertically extends into the tank body, the first grinding assembly is installed on the rotating shaft and comprises a first grinding seat, the first grinding seat is rotationally connected to the rotating shaft in a sleeving mode, the peripheral wall of the first grinding seat is fixedly arranged on the inner wall of the tank body, a conical groove is formed in the top face of the first grinding seat, and the rotating shaft is fixedly sleeved with a conical block; and a scraper is fixedly arranged on the peripheral wall of the conical block through a connecting block. According to the invention, the control capability on the granularity of the lithium iron phosphate material is improved, the uniform distribution of the granularity of the material is ensured, the problem of excessive grinding or insufficient grinding is avoided, the risk of material caking caused by the grinding wheel in the grinding process is reduced, and the grinding efficiency is improved.

The invention discloses a process for improving surface defects of a quartz substrate of a photomask IC (integrated circuit) chip, relates to the technical field of quartz substrates, and aims to solve the problem that the surface defects of the quartz substrate cannot be effectively improved in the process from material selection to manufacturing to later quality control in the prior art. Through three methods of visual inspection, automatic optical detection and laser scanning detection, multi-dimensional detection from macroscopic to microscopic and from the surface to the structure is realized, the accuracy and comprehensiveness of defect identification are ensured, and by setting a clear defect classification standard and a maximum defect range, the defect identification accuracy is improved. Defects possibly affecting product performance can be found and treated in time, the surface laser repairing method is suitable for shallow layer defects, the internal ion implantation repairing method can effectively treat deep layer defects, the flexibility and adaptability of the technology are improved through diversified repairing strategies, and unnecessary material waste and machining cost are avoided through accurate repairing.

The invention discloses a waterproof anticorrosive coating and a preparation method and application thereof, and relates to the technical field of coatings, and the waterproof anticorrosive coating is prepared from the following raw materials in parts by weight: 30-40 parts of carboxyl-terminated hyperbranched polyester resin, 20-30 parts of carboxyl-terminated functional polyamide, 10-15 parts of hyperbranched polyurethane containing epoxy groups, 15-20 parts of filler, 1-3 parts of (3, 6-diamino acridine-9-yl) boric acid, 1-3 parts of 1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5- the component A is prepared from the following components in parts by weight: 3-5 parts of 2, 3, 5-triglycidyl-S-triazinetrione, 1-2 parts of a coupling agent, 0.8-1.2 parts of a flatting agent and 0.6-1.3 parts of a defoaming agent; the carboxyl-terminated functional polyamide comprises a structural unit introduced by the following monomers: N-(4H-1, 2, 4-triazole-4-yl) diphenylamine-4, 4 '-dicarboxylic acid, and 3, 3'-diamino-4, 4 '-difluorodiphenyl sulfone. The coating is good in waterproof and anti-corrosion performance, high in adhesive force with a base material, sufficient in solvent resistance and aging resistance and long in service life.

The invention relates to the technical field of automobile part machining, and discloses a combined die-casting die for automobile hardware, which comprises a mounting bottom plate, a base is mounted at the top of the mounting bottom plate, a double-shaft servo motor is fixedly connected to the outer part of the base, and a transmission rod is fixedly connected to the output end of the double-shaft servo motor. And the outer side of the transmission rod is fixedly connected with two second bevel gears, two grooves are formed in the outer surface of the base, the interiors of the grooves are rotationally connected with two-way screws, and one end of each two-way screw is fixedly connected with a first bevel gear. According to the combined die-casting die, the first bevel gear, the second bevel gear, the two-way screw rod, the threaded seat and other parts are used in cooperation, the two lower dies can be driven to be rapidly closed to form a closed interval to be matched with the upper die for die-casting machining, meanwhile, demolding is more convenient, a die-casting piece cannot be abraded, and the die-casting efficiency is improved. And the qualified rate of die castings is higher.

The invention provides connector assembly automation equipment, a connector comprises a frame and a contact pin, the connector assembly automation equipment comprises a divider turntable rotating around the axis of the divider turntable, and a plurality of stations matched with the frame are arranged on the divider turntable at intervals in the circumferential direction. A frame feeding mechanism, a contact pin feeding mechanism, a contact pin press-fitting mechanism and a product discharging mechanism which correspond to different stations are distributed on the outer side of the divider rotating disc. According to the connector assembly automation equipment, manual operation is replaced by automatic and intelligent equipment, the production efficiency is comprehensively improved, efficient line production can be achieved through the multi-station divider rotating disc and the automatically-controlled feeding and discharging system, the bottleneck in production is reduced, the output speed of products is increased, and the production efficiency is improved. The visual inspection mechanism is introduced to replace naked eyes of operators to observe the assembly quality, and the qualified rate of products is increased.

The utility model relates to the technical field of production equipment of wire or cable overhead installation devices, and particularly discloses an automatic assembly system for a spacer wire clamp. A base in the assembly system comprises a plurality of bearing seats, and the bearing seats are connected with a bearing seat through displacement suites. The displacement suite comprises a driving device and a displacement control device for controlling the displacement amount of the object bearing seat. And the object bearing seat is provided with a limiting external member for fixing the spacer wire clamp. An automatic pin pressing device, an automatic welding device and an automatic polishing device are sequentially arranged along the moving path of the object bearing seat, and the automatic devices and the displacement suite are all connected with a master control device. Parameters such as displacement distance of the object bearing seat and the like are accurately controlled, so that the spacer wire clamp placed on the object bearing seat can be quickly and accurately moved into a processing area of each automatic device, and the processing accuracy of the spacer wire clamp is improved; and meanwhile, it is guaranteed that all the steps are tightly connected, and the machining speed of the spacer wire clamp is increased.

The invention relates to the technical field of electrical insulating materials for power transmission lines, and discloses an alicyclic epoxy resin external insulating material with excellent hydrophobicity and a preparation method thereof, the insulating material comprises the following raw material components: alicyclic epoxy resin, a curing agent, an accelerant and silicone rubber particles; the silicone rubber particles are subjected to plasma treatment. The alicyclic epoxy resin external insulation material with excellent hydrophobicity provided by the invention can effectively improve the hydrophobicity and hydrophobicity migration of the alicyclic epoxy resin material, and also can synergistically solve the problem of waste silicone rubber decommissioning treatment.

The invention provides an intelligent verification integrated device for an aluminum alloy rear fork, and the device comprises a workbench, the middle part of the workbench is movably provided with two groups of sliding seats, the two groups of sliding seats are symmetrically arranged front and back, the interiors of the two groups of sliding seats are provided with limiting mechanisms, and the interiors of the upper ends of the two groups of sliding seats are provided with second supporting rods in an inserted manner. Front-and-back correction oil cylinders are arranged at the left end of the upper surface of the workbench, front-and-back correction blocks are arranged at the telescopic ends of the two front-and-back correction oil cylinders correspondingly, first supporting rods are inserted into the upper ends of the two front-and-back correction blocks correspondingly, and up-and-down correction blocks are movably installed in the lower ends of the two front-and-back correction blocks correspondingly. Through the up-and-down correction oil cylinder, the first supporting rod and the up-and-down correction block, Z-direction correction can be accurately conducted on a workpiece, through the front-and-back correction oil cylinder, the front-and-back correction block and the second supporting rod, Y-direction correction can be accurately conducted on the workpiece, operation is easy and fast, correction and inspection are integrated, and the percent of pass is high.

The invention relates to a temperature calibration system and method, an upper computer, a readable storage medium and a program product. The system comprises an upper computer, a heating appliance and an infrared temperature measuring device, the infrared temperature measuring device and the heating appliance are connected with the upper computer, and the upper computer is used for responding to triggering of a target application, generating a temperature calibration instruction and sending the temperature calibration instruction to the heating appliance; the heating appliance is used for heating according to the temperature calibration instruction and a preset temperature; the infrared temperature measuring equipment is used for collecting temperature data of a heating body of the heating appliance and sending the temperature data of the heating body to the upper computer; the upper computer is further used for determining the target position of the heating body according to the heating body temperature data and judging whether the target temperature of the target position meets the calibration condition or not, and if the target temperature meets the calibration condition, calibration success is displayed on the display interface. By adopting the system, the heating performance consistency of the heating appliance can be improved, and the product percent of pass of the heating appliance is improved.

The identification card testing and marking system comprises an upper frame, a lower frame, a robot module, a shuttling module, an RFID reader-writer, a testing whole line, an NG discharging module and a feeding and discharging machine, the lower frame is matched with the upper frame and provided with a table top and a clamping position, the feeding and discharging machine is arranged in the clamping position, other assemblies are arranged on the table top, and the robot module, the shuttling module, the RFID reader-writer, the testing whole line, the NG discharging module and the feeding and discharging machine are arranged on the table top. The shuttling module transports an identification card to a grabbing position of the robot module, the robot module grabs the identification card to the RFID reader-writer to read information, and the whole test line carries out first posture test, screen detection, product overturning, RFID distance test, second posture detection, product marking and product caching on the identification card; and the robot module grabs the cached identification cards which are tested to be qualified to the feeding and discharging machine for discharging, and grabs the cached identification cards which are tested to be unqualified to the NG discharging module for discharging. According to the invention, identification card function detection and finished product marking and blanking functions are integrated, and the product testing and marking efficiency and the qualified rate are improved.

The invention discloses an improved liquid crystal display screen secondary cutting and trimming process, and particularly relates to the technical field of liquid crystal display screen processing, which comprises the following steps: SS1, light profile scanning and pre-cutting planning, SS2, precise cutting of an upper polaroid, SS3, flexible fitting and pre-pressing treatment, SS4, integration of an IC (integrated circuit) and an FPC (flexible printed circuit), and formation of pre-cut liquid crystal display FOG (field optical glass) and SS5, high-precision laser cutting and splitting treatment. SS6, laser welding and sealing treatment, SS7, lower polaroid attaching and curing treatment, and SS8, power-on aging and backlight assembly are carried out. By introducing the technologies of laser scanning and planning, automatic precise cutting and flexible fitting, laser welding and sealing treatment and the like, the cutting precision, edge quality and production efficiency of the liquid crystal display screen are remarkably improved, meanwhile, the production cost is reduced, the stability of the production process and the reliability of the product quality are enhanced, and the production efficiency of the liquid crystal display screen is improved. And obvious advantages are brought to the field of liquid crystal display screen manufacturing.

The invention belongs to the technical field of oil injection ring sealing ring assembly, particularly relates to an end face sealing ring assembly mechanism of an oil injection ring sealing ring assembly line, and solves the problems of low automation degree and low assembly efficiency. The end face sealing ring assembly mechanism of the oil injection ring sealing ring assembly line comprises a rack, an oil injection ring carrying table is slidably connected to the rack, and the oil injection ring carrying table can move between a material receiving station and an assembly station used for end face sealing ring assembly; a sealing ring transfer table and a sealing ring stacking module are further arranged on the rack, and a sealing ring transfer structure is arranged between the sealing ring transfer table and the sealing ring stacking module and used for transferring end face sealing rings of the sealing ring stacking module to the sealing ring transfer table; a sealing ring moving and mounting structure is arranged between the sealing ring transfer table and the oil injection ring carrying table and used for picking the end face sealing ring of the sealing ring transfer table and pushing the end face sealing ring downwards into an end face sealing groove in the upper end of the oil injection ring. And the effect of high automation of assembly of the end face sealing ring and the oil injection ring is achieved.

The invention relates to membrane electrode production equipment, and belongs to the technical field of hydrogen fuel cells. The invention provides membrane electrode production equipment, which comprises an upper frame unwinding module, a lower frame unwinding module and a membrane electrode production module, the CCM cutting and transferring module is used for providing a CCM sheet material; the lower frame cutting and transferring module is used for providing a lower frame semi-cutting and transferring material belt; the thermal compounding module is used for receiving the upper frame material belt, the CCM sheet material and the lower frame half-cut transfer material belt and performing hot pressing to form a composite material belt; the finished product cutting and stripping module comprises a finished product cutting mechanism and a finished product stripping mechanism, and the finished product cutting mechanism is used for carrying out half cutting on the composite material belt to form a half-cut MEA material belt; and the finished product stripping mechanism is used for stripping the MEA sheet material from the half-cut MEA material belt and outputting the MEA sheet material. According to the membrane electrode production equipment, the membrane electrode can be automatically produced, and the qualified rate of finished products and the quality control precision are relatively high.

The invention relates to the field of printing and dyeing wastewater treatment equipment, in particular to printing and dyeing wastewater circulation treatment equipment with a treatment volume adjustable function, which comprises a mixing box body for supporting and a sealing cover plate fixedly arranged on the upper end surface of the mixing box body and used for sealing, and two groups of feeding guide pipes are arranged on the upper end surface of the sealing cover plate. According to the invention, the transmission clamping shaft drives the mixing blade plate to chemically treat printing and dyeing wastewater in the mixing box body, and meanwhile, the transmission clamping shaft can synchronously provide power for the wastewater treatment device and the centrifugal filtration device, so that the wastewater treatment device can carry out filter pressing and harmful substance adsorption treatment on the printing and dyeing wastewater; meanwhile, the centrifugal filtration device can perform centrifugal filtration on the wastewater, and the multi-level advanced treatment efficiency of the equipment on the wastewater can be effectively improved in a treatment mode of combining physical treatment and chemical treatment, so that the qualified rate of the equipment on the printing and dyeing wastewater treatment is improved to the greatest extent.

The invention discloses sheet metal part welding forming equipment and a method thereof.The sheet metal part welding forming equipment comprises a basic weldment fixing unit which comprises a supporting frame, a supporting welding plate is fixedly connected to the supporting frame, a plurality of positioning holes are formed in the supporting welding plate, and positioning pins are arranged in the positioning holes; and the to-be-welded part clamping unit comprises a portal frame, a double-thread screw is rotationally connected to the portal frame, and end clamping assemblies are symmetrically arranged on the portions, located on the two sides of the supporting welding plate, of the double-thread screw. The position precision of a weldment in the welding process can be ensured through the precise action of the end clamping assembly, the risk of product size deviation is greatly reduced, the product percent of pass is improved, the adjustable design of the end clamping assembly can adapt to sheet metal parts of different shapes and sizes, the use of additional auxiliary clamps is reduced, the cost is reduced, and the preparation time is shortened.

The invention relates to a preparation method of a multi-metal coarse-grained ore sample. The preparation method of the multi-metal coarse-grained ore sample comprises the following steps: roasting an ore sample, and pre-screening the roasted sample by adopting a 6-mesh standard sieve; carrying out coarse crushing on the residual materials after pre-screening, and uniformly mixing the crushed materials with the pre-screened materials; carrying out intermediate crushing on the uniformly mixed materials, and feeding the materials subjected to intermediate crushing into a crusher for grinding; and repeatedly and uniformly mixing the ground materials, dividing the uniformly mixed ground materials into a sample amount, grinding the divided materials into 200 meshes through a sealed test sample preparation grinder, and uniformly mixing and bagging the ground materials. According to the scheme provided by the invention, through four links of coarse crushing, intermediate crushing, fine crushing and fine grinding, large-particle-size ore materials are crushed and processed by stages, the particle size of each stage and representativeness of a division sample are ensured, the ore materials are finally processed to the particle size of-200 meshes or below, the qualified rate of preparation of coarse-particle ore samples is increased, and accurate guidance of production is realized.

The utility model discloses a welding head cleaning device which comprises a driving mechanism, a cleaning brush and a sliding mechanism, the driving mechanism comprises a driving part, a first elastic assembly and a second elastic assembly, the first elastic assembly is arranged on the side face of a rack, the driving part is arranged on the rack and is in driving connection with the second elastic assembly, the cleaning brush is arranged on the sliding mechanism, and the sliding mechanism is arranged on the rack in a sliding mode. The sliding mechanism is provided with a sawtooth-shaped clamping groove block, a plurality of tooth grooves are formed in the clamping groove block in an array mode, and the first elastic assembly and the second elastic assembly are movably clamped with the tooth grooves. According to the welding head cleaning device, the driving piece drives the first elastic assembly to replace the tooth groove, then the clamping groove block is reversely pulled to move, then the sliding table and the cleaning brush on the sliding table are driven to move, the adjustability of the cleaning face of the cleaning brush is improved, the problem that the cleaning effect is poor due to the fact that the welding head makes contact with a single cleaning area for a long time is solved, and therefore the spot welding quality is improved; and in addition, the whole structure of the mechanism is simple, and operation is convenient and fast.

The invention discloses automatic assembling equipment for automobile door lock PIN needles. The automatic assembling equipment comprises a door lock shell line body, a first PIN needle assembling device and a second PIN needle assembling device. The door lock shell line body is sequentially provided with a first PIN assembly station and a second PIN assembly station in the conveying direction. Each of the first PIN assembling device and the second PIN assembling device comprises a PIN feeding assembly, a PIN feeding robot, a PIN positioning assembly and a PIN transferring and assembling assembly; the PIN transferring and assembling assembly is used for grabbing, transferring and assembling the first PIN or the second PIN located in the PIN positioning assembly into a first PIN hole or a second PIN hole of the door lock shell located in the PIN assembling station. The PIN transferring and assembling component comprises a PIN two-dimensional transferring plate and an assembling clamping jaw; the assembling clamping jaw comprises a left assembling clamping jaw body, a right assembling clamping jaw body and an assembling push plate. According to the pin inserting device, the pins can be accurately and automatically inserted into the door lock shell assembly, it is ensured that each pin can be correctly and consistently inserted into the preset position, and the pin inserting qualification rate is high.

The invention discloses a high-performance potassium-doped tungsten rod and a preparation method and application thereof, and belongs to the technical field of powder metallurgy, and the method relates to the steps of material selection, pre-reduction, vacuum spray doping, reduction, batch pickling, mixing, hard film cold isostatic pressing forming, low-temperature impurity removal, vertical melting pre-sintering, medium-frequency sintering and the like. By accurately controlling the rare earth element doping process and optimizing doping agent preparation, uniform distribution of rare earth elements in the tungsten rod is achieved, and compared with the prior art, the grain refinement effect and the mechanical performance of the high-performance potassium-doped tungsten rod are remarkably improved. The prepared potassium-doped tungsten rod has the advantages of small average grain size and high bending resistance, is suitable for the fields of cathode materials of electronic devices, heating elements of high-temperature furnaces, filaments in the lighting industry, high-temperature furnaces in the semiconductor industry and the like, and meets the requirements of the modern industry for high-performance tungsten materials.