228results about How to "Solve quality problems" patented technology

The invention discloses a data processing method for compliance evaluation of data element processing operation, and relates to the technical field of data processing and compliance management, and the method comprises the steps: collecting data elements and regulatory rules, carrying out the preprocessing, building a knowledge graph of the association of the data elements and the regulatory rules based on the preprocessed data elements and regulatory rules, and carrying out the compliance evaluation of the data elements and the regulatory rules. The method comprises the following steps: monitoring data element processing operation in real time, extracting operation meta-information, performing rule matching in combination with a knowledge graph, fusing a rule matching result, the knowledge graph and the operation meta-information to obtain data processing features, constructing a compliance evaluation model by using a machine learning algorithm, inputting the data processing features into the compliance evaluation model, and analyzing potential risks. According to the method, high-risk operation is pre-warned and limited, the compliance evaluation model is optimized according to user feedback, a dynamic compliance evaluation method is formed, and the method has important significance in the field of data processing and compliance management.

The invention discloses a bridge pier stud crack automatic detection system based on a wall-climbing robot, and relates to the technical field of crack detection, and the system realizes closed-loop operation from accurate crack detection to intelligent repair through a crack detection module and a repair material intelligent spraying detection module. The crack detection module uses a multispectral imaging device, a thermal imaging camera and a laser scanning technology, can collect a multispectral difference value G (x, y), surface temperature distribution T (x, y) and a depth matrix D (x, y) of a crack area, extracts a crack boundary B (x, y) through a high-precision algorithm, and calculates a crack volume Vc. And the repairing material intelligent spraying detection module dynamically calculates the volume Vm of the repairing material according to the volume of the crack, and the SLAM technology is utilized to optimize the spraying path and parameters, so that uniform coverage and efficient utilization of the repairing material are ensured. The system greatly improves the precision of crack detection and repair, and avoids material waste and repair omission.

The invention provides a face sketch synthesis method and system based on perceptual loss, and relates to the technical field of image processing, the quality of face sketch synthesis is improved by introducing a strategy based on perceptual loss, high and low frequency features of a face image are extracted by adopting a VGG19 network, and weighted fusion of cross-resolution features is realized through an NSRM module. Therefore, the details and overall perception of the facial features are effectively captured and reserved on different scales, the fineness of the image is improved on the local details, the consistency and the natural sense of the image are enhanced on the global features, the distance between the generated image and the real image in the feature space can be better matched by using the perception loss, and the image quality is improved. And comprehensive optimization is carried out in combination with various losses such as adversarial loss and spectral consistency loss, so that the parameters of the generator and the discriminator are adjusted more efficiently in the training process.

The invention discloses high-precision laser cutting equipment suitable for a complex circuit board, and relates to the technical field of circuit board cutting, the high-precision laser cutting equipment comprises a ceramic table top, a base, a cooling assembly and a waste collecting assembly, the ceramic table top is fixedly mounted at the top end of the outer wall of the base; a cooling assembly and a waste collecting assembly are fixedly installed on the side face of the base through a conveying mechanism. The cooling assembly comprises a nozzle, a liquid box and a radiator, the nozzle is fixedly installed on the side face of the top end of the outer wall of the base through a supporting piece, the liquid box is fixedly installed on the side face of the outer wall of the base, the radiator is fixedly installed on the side face of the inner wall of the base, an impeller is fixedly installed at the bottom of the inner wall of the radiator, and a ventilation opening is formed below the impeller. And a dustproof net is fixedly mounted at the ventilation opening through a bolt. By installing the cooling assembly, the cutting temperature is reduced, the problem of material deformation caused by the heat effect is solved, and it is helpful for guaranteeing the flatness and smoothness of the cutting face and the overall integrity of the circuit board.

The invention relates to a design method of a star magnitude large dynamic range spectrum modulation system. The design method comprises the following steps: S1, adopting a cylindrical collimation beam expanding system, a star magnitude large dynamic range light splitting system and a DMD device; the star magnitude large dynamic range light splitting system is composed of a large dynamic light splitting optical system and an energy modulation optical system. The star isometric large dynamic light splitting optical system is composed of a steering reflecting mirror, a grating and an imaging reflecting mirror. The energy modulation optical system is composed of a steering mirror, a grating and a plane mirror. S2, selecting a DMD device and a grating; and S3, carrying out optimization design on the cylindrical collimation beam expanding system and the star magnitude large dynamic range beam splitting system. According to the invention, the cylindrical collimation and beam expanding system is adopted to replace a physical slit and a collimating mirror in the Czerny-Turner type plane diffraction grating optical structure, so that the imaging quality of the large-dynamic-range spectrum modulation optical system can be improved; and the problem of contradiction between the slit and the imaging quality in the initial structure can be solved.

The invention relates to the technical field of electrode processing, and provides a dry electrode rolling device with a controllable pressure roll gap, which comprises at least two compression rollers with inner cavities, and a rolling gap is arranged between the two compression rollers; the first touch piece is arranged in the inner cavity, the first touch piece and the pressing roller are arranged in a split mode, the first touch piece is provided with a first touch part, the first touch part makes contact with the inner wall of the inner cavity, and the first touch part and the rolling seam are located on the inner side and the outer side of the roller wall of the pressing roller respectively. According to the technical scheme, the problems that in the prior art, dry powder materials are not uniformly distributed, so that the compression rollers deform, the gap between the adjacent compression rollers is reduced, the quality of the formed electrode diaphragm is influenced, the thickness is not uniform, the surface is not flat and the like are solved.

The invention provides a comment display method and device, equipment, a storage medium and a program product. Relates to the technical field of computers. The method comprises the steps that in response to a comment screening operation, to-be-displayed comment information and user behavior data of the comment information are obtained, and the comment information comprises a comment score and a comment text; based on the evaluation score and the user behavior data, emotion analysis is carried out on the comment text to obtain an emotion evaluation result of the comment text, and the emotion evaluation result comprises an emotion tendency and a corresponding emotion intensity value; based on a screening type indicated in the comment screening operation, screening out comment information of which the display association degree exceeds a preset threshold value, the display association degree being used for representing the correlation between the screening type and the emotional tendency of the comment text; and sorting and displaying the screened comment information based on the user behavior data of the comment information and the difference coefficient. The comment display effect is improved.

The invention relates to the technical field of multi-unmanned-aerial-vehicle cooperative operation and three-dimensional modeling, in particular to a multi-unmanned-aerial-vehicle cooperative three-dimensional rapid modeling method for a highway accident scene, and the method comprises the steps: generating a three-dimensional grid map of an accident area through the scanning of a millimeter-wave radar by a main control unmanned aerial vehicle; subareas are divided according to a load balancing strategy and are distributed to slave unmanned aerial vehicles, the slave unmanned aerial vehicles traverse grids along a snake-shaped track, laser radar point clouds and five-view-angle images are synchronously collected, data are bound through double time stamps and space coordinates, the point clouds are preprocessed through edge computing nodes, and the point clouds are stored in a database; the master control unmanned aerial vehicle evaluates quality based on density standard deviation and overlapping matching degree and instructs to reacquire, performs high-precision Poisson reconstruction on an accident core area, performs voxelization processing on a peripheral area, maps image textures, optimizes vehicle deformation details, simplifies a model and retains key element precision, and finally performs data processing. License plate coordinates, a scattered object thermodynamic diagram and an emergency lane occupation state are automatically marked, a visual model is generated, and rapid and accurate restoration of an accident scene is realized.

The invention discloses a mine geological environment evaluation system based on multi-scale characteristics and an evaluation method thereof. The mine geological environment evaluation system comprises a remote sensing image acquisition unit, a mine geological environment problem analysis unit, a mine geological environment element extraction unit, a mine geological environment problem identification unit and a mine geological environment evaluation unit. The method comprises the following steps: collecting a remote sensing image of a target mine area, extracting mine geological environment elements, analyzing temporal and spatial change characteristics of the elements, performing similarity comparison calculation with change characterization of different mine geological environment problems, identifying the geological environment problems, and training an evaluation model to obtain a geological environment evaluation prediction result. According to the method, index factor characterization of different mine geological environment problems is analyzed from remote sensing image modal data, through automatic comparison and matching with target remote sensing image multi-scale features, the problem that the efficiency and quality of a mine geological environment investigation mode and a sample selection method are low is solved, and scientific evaluation of the mine geological environment is achieved.

The invention provides an industrial telephone communication signal enhancement method and system. The method comprises the following steps: step 1, acquiring historical communication signal data, real-time communication signal data and environment data of an industrial telephone; according to the method, the signal interference recognition model is constructed, the interference signal features are accurately recognized, interference is removed through the intelligent filtering algorithm, the problems of signal strength weakening and call quality reduction caused by electromagnetic interference are effectively solved, meanwhile, the influence of environmental factors such as temperature and humidity on communication signals is considered, corresponding compensation measures are adopted, and the communication quality is improved. The adaptability and the stability of the system in a complex industrial environment are improved; signal relay equipment is arranged, so that the signal coverage range is effectively expanded, and efficient communication and coordination among departments in industrial production are ensured; dynamic adjustment is carried out according to the communication signal quality monitored in real time, it is guaranteed that the system is in the optimal working state all the time, and the intelligent level and stability of the system are improved.

The invention relates to the technical field of data acquisition, and particularly discloses a data acquisition method and system based on edge computing, which are applied to edge computing of the Internet of Things, and comprises the following steps: acquiring multi-source target information according to the Internet of Things, and classifying the multi-source target information to obtain multi-source classification data, the multi-source classification data comprises structured data, unstructured data, time series data and cross-domain data; and establishing a multi-source data index according to the structured data, the unstructured data, the time series data and the cross-domain data, and acquiring a data acquisition frequency set according to the multi-source data index. According to the method, the comprehensiveness and the accuracy of data quality evaluation are ensured by obtaining the first data evaluation value, the second data evaluation value, the third data evaluation value and the fourth data evaluation value of the structured data, the unstructured data, the time series data and the cross-domain data, and the problems that evaluation is not comprehensive and quality changes are not monitored are solved.

The invention provides a two-stage training method for a lightweight Chinese-English bilingual large language model. The method comprises the following steps: step 1, collecting and preprocessing Chinese-English training data; the preprocessing process comprises special mark clearing, sensitive data clearing, data duplicate removal, advertisement removal and formatting processing; 2, performing first-stage high-resource language training, namely performing model training by using English; 3, second-stage bilingual mixed training is carried out, and the Chinese data and the English data are mixed for second-stage training by adopting language migration training; wherein the step 3 comprises the following steps: step 31, performing word list expansion; and step 32, language migration training. The bilingual processing capability can be improved.

The invention relates to a method for testing the hollowness and the mass per unit area of a circular hollow fiber, which comprises the following steps: for the circular hollow fiber to be tested, obtaining the linear density of the circular hollow fiber through a middle section weighing method, calculating the equivalent diameter of the circular hollow fiber, and measuring the appearance diameter of the circular hollow fiber by using a microscope. And calculating the hollow diameter of the circular hollow fiber, and calculating the hollowness and the mass per unit volume of the circular hollow fiber according to a calculation formula related to the hollowness and the mass per unit volume of the circular hollow fiber. The method for testing the hollowness and the mass per unit volume of the circular hollow fiber is innovatively established, and the problem of testing the hollowness and the mass per unit volume of the circular hollow fiber can be solved.

The invention discloses a casting technology of a semicircular casting. The casting technology comprises the following steps of mold making, tree assembling, shell making, dewaxing, roasting, pouring, sand removing, riser gas cutting, heat treatment, finishing and result judgment. According to the casting technology of the semicircular casting, the circular casting is subjected to shell making pouring, the finished product is obtained after cutting, compared with direct pouring of the semicircular casting, the efficiency and the yield can be improved, the size of the manufactured casting is not deformed, follow-up correction is not needed, the requirement for the size of the casting is met, the technology yield is increased, and the production cost is reduced. The cost of a factory is reduced, on-time delivery is also guaranteed, a cutting line is arranged on a circular casting to provide quality guarantee for finished products at subsequent cutting positions, the problem that a wax mold cannot be thoroughly discharged is solved by utilizing an angle-adjustable rotating device when the wax mold is liquefied by utilizing a steam kettle, meanwhile, stable fixation of the mold can be realized, and the production efficiency is improved. And the safety in the process machining process is ensured, and the casting precision and efficiency of castings are improved.

The invention relates to an electric energy meter communication method, device and equipment, a readable storage medium and a program product, relates to the technical field of electric energy meters, and can improve the communication efficiency and quality of the electric energy meters. The method comprises the following steps: generating a communication link table according to link layer networking information carried by a networking application of a lower electric energy meter; dynamically adjusting the current baud rate of the support channel until the current data traffic of the support channel is greater than the data traffic threshold or the current bit error rate is greater than the bit error rate threshold, and adjusting the dynamically adjusted baud rate according to a baud rate optimization strategy to obtain an optimized baud rate; acquiring data transmission performance test results of the support channel under the dynamic adjustment baud rate and the optimized baud rate, and determining an optimal baud rate corresponding to the support channel according to the data transmission performance test results; determining an optimal transmission path according to the optimal baud rate corresponding to each of the plurality of support channels; and communicating with the lower electric energy meter according to the optimal transmission path.

The invention relates to the technical field of flange plate welding, in particular to flange plate automatic welding equipment and a using method thereof.The flange plate automatic welding equipment comprises a welding executing mechanism arranged on a wall, a supporting platform is arranged in front of the welding executing mechanism, and a rotating platform is arranged on the supporting platform; a chuck for clamping a flange plate is fixed on the rotating platform; the welding executing mechanism comprises a linear module arranged on a wall, a frame is fixed to a sliding block of the linear module, a rotating shaft is arranged at the top of the frame, and the rotating shaft is connected with a mechanical arm. The method can effectively ensure that a product is not deformed in the welding process, meanwhile, the residual stress of a weldment generated by welding is reduced, the quality of the product is improved, the passing rate of nondestructive detection of a flange pipeline on a welding seam is also improved, the problems of poor welding seam quality, discontinuous welding and the like caused by errors of the roundness and coaxiality of the pipeline are solved, and the welding quality is improved. And the flange automatic welding level is improved.

The invention discloses a thin-wall three-period minimal curved surface lattice structure laser additive manufacturing method, which relates to the field of additive manufacturing, and comprises the following steps: (1) according to a three-period minimal curved surface implicit function and additive manufacturing layer thickness, obtaining a single-channel contour path of each layer through direct slicing; (2) generating parallel filling lines in each layer, and intersecting the parallel filling lines with the combination of the contour paths of the layer and the higher layer; (3) combining every two intersection points to form a line segment, and taking the line segment as a filling path if sampling points of the line segment meet the conditions of a functional expression, an inclination angle and a length; (4) taking the filling path of the layer as a supporting layer, and moving the filling path upwards by one layer to form a filling layer; and (5) all the paths are input into additive manufacturing equipment, and different machining parameters are set for manufacturing. The laser path of the thin-wall three-period minimal curved surface lattice structure can be efficiently generated, only one melting channel is contained in the thickness direction of the structure, the wall thickness is smaller than 200 micrometers, and the cavity defect generated in the slicing process can be overcome.

The invention discloses a multi-agent hyperspectral band selection method based on a fusion state and a superior experience pool, and belongs to the field of remote sensing image processing. After a hyperspectral image is obtained, a sample set of the hyperspectral image is generated, and the sample set is divided into a training sample set and a test sample set; a multi-agent waveband selection model is constructed according to the training sample set, the state representation method comprises meta description statistics, an auto-encoder and a graph convolutional network, and the reward allocation strategy comprises an adaptive allocation strategy based on waveband importance; inputting the training sample set into a multi-agent waveband selection model for model training to obtain a trained multi-agent feature selection model, and optimizing a memory sample of an experience pool for model training by adopting a specific sample oriented experience pool optimization method based on a Gaussian mixture model; and inputting the test sample set into the trained multi-agent feature selection model for band selection, outputting a hyperspectral image band set, and classifying the hyperspectral image band set to obtain a classification result.

The invention relates to the technical field of mining machinery, and discloses a light underground drill rig which comprises a vehicle body, a supporting arm and a drill arm which are sequentially connected, the drill arm is detachably connected with the supporting arm through a butt joint unit, and the drill arm is any one of a deep hole drill arm and an anchor rod drill arm; the control unit is connected with the supporting arm and the drilling arm, the control unit comprises a deep hole drilling machine module and an anchor rod drilling machine module, and the deep hole drilling machine module and the anchor rod drilling machine module are used for controlling the deep hole drilling arm and the anchor rod drilling arm to act correspondingly; the safety protection unit is arranged on the butt joint unit and used for monitoring the installation state of the drill arm and the supporting arm and giving an alarm. A modularized machine body structure is adopted, the drill arm can be replaced according to operation requirements, integrated design of a deep hole drilling machine and an anchor rod drilling machine is achieved, and the problems that the operation cost is high when two drilling machines are arranged at the same time, and the size and the mass of an underground drill machine are too large are solved; in the using process, the installation state of the drill arm and the supporting arm is monitored, and potential safety hazards are found and treated in time.

The invention discloses an axillary nerve ultrasound image semantic segmentation method based on domain self-adaption, and the method comprises the following steps: S1, collecting axillary nerve ultrasound images, marking a part of axillary nerve ultrasound images, carrying out the preprocessing of all images, and constructing a data set; s2, constructing a semantic segmentation model, performing preliminary supervision and fine tuning, and obtaining a preliminarily optimized semantic segmentation model based on existing annotation data; s3, performing clustering prototype self-training on the semantic segmentation model which is preliminarily optimized in the step S2; s4, constructing a domain classifier, and carrying out category distinguishing; and S5, introducing a disturbance characteristic tensor according to the output of the encoder, and constructing a consistency loss function. According to the method, the dependence on large-scale labeled data is reduced by fully mining the hidden information of the unlabeled ultrasonic image data. Through the pseudo labels generated by adaptive clustering, the model can automatically learn segmentation features, so that the cost of manual labeling is remarkably reduced, and the training efficiency is improved.

The present invention discloses a cloud platform service load prediction method based on a time series convolutional neural network, including: S1 collecting CPU load time series data to form a training sample set; S2 preprocessing and feature extraction of the training samples, wherein the feature extraction includes a periodic attention vector and a peak attention vector, and weighted summing the training samples, the periodic attention vector and the peak attention vector to obtain a final training sample; S3 constructing a time series convolutional neural network, and taking the final training sample as an input signal; S4 training the time series convolutional neural network; S5 inputting test sample data into the trained time series convolutional neural network to obtain a CPU load prediction result of the test sample. The present invention has high prediction accuracy and is conducive to solving the problems of hysteresis and service quality degradation that may be caused by responsive automatic scaling.

The invention discloses a linkage control method and system based on water level sensor assembly detection, and relates to the technical field of assembly linkage control, and the method comprises the steps: obtaining a preset assembly scheme based on the type matching of a water level sensor; sequentially executing parameter configuration and automatic feeding according to the operation parameters and the material types; putting the water level sensor to be assembled into a workbench of the assembling equipment, and starting an image detection station to carry out welding spot quality detection on the water level sensor; if the welding spot quality detection result is qualified, small cover mounting operation is carried out; and carrying out gland height detection on the water level sensor, if an expected height index is met, marking the water level sensor as a qualified product, and clamping the water level sensor into a conveyor belt of a subsequent operation process through a blanking clamp. The technical problems that in the prior art, the efficiency of the assembly detection process is low, the assembly precision is difficult to guarantee, and the quality and the production efficiency of the water level sensor are poor are solved, and the technical effect of improving the assembly efficiency, the assembly precision and the quality stability of the sensor is achieved.

The utility model belongs to the technical field of water paint processing, and particularly relates to a raw material weighing device for water paint processing, which comprises a weighing device body and a plurality of storage tanks, the plurality of storage tanks are arranged on the weighing device body, the weighing device body is fixedly connected with a shell, the top surfaces of the storage tanks are fixedly connected with fixing blocks, and the fixing blocks are fixedly connected with the shell. A first rotating rod is rotationally connected into the fixing block, one end of the first rotating rod penetrates through the shell and extends into the shell to be rotationally connected with the shell, and the other end of the first rotating rod is fixedly connected with a worm; the driving assembly is located in the shell and used for driving the multiple first rotating rods to rotate; the multiple worm wheels are rotationally connected to the top faces of the multiple storage tanks correspondingly and engaged with the multiple worms correspondingly; the raw material weighing device solves the problems that when the raw material weighing device is used, different water-based paint raw materials stored in the storage tank are in a static state for a long time, congelation possibly exists in the water-based paint raw materials, and the quality of the raw materials is reduced.

The invention provides a composite connection method for thick titanium alloy plates, and belongs to the technical field of metal material welding and additive manufacturing. According to the technical scheme, the method comprises the steps that symmetrical X-shaped grooves are machined in thick plate titanium alloy workpieces to be connected; a laser-electric arc hybrid welding system is adopted for conducting double-face bottoming welding on the X-shaped groove, so that a double-face bottoming welding seam is formed; and a powder feeding type laser cladding system is adopted, and multi-layer and multi-channel additive filling is conducted in the X-shaped groove above the double-face bottoming welding seam. According to the method, efficient laser-electric arc composite bottoming and low-heat-input laser cladding additive filling are separated, high-quality penetration of the root is guaranteed firstly, then welding deformation and residual stress are remarkably reduced through low-heat-input filling, the microstructure of a filling area is optimized, and therefore a welded joint with excellent comprehensive performance is obtained.

The utility model relates to the technical field of watch processing, and discloses a bottom cover screwing machine for assembling a watch threaded bottom cover, which can accurately control the screwing force and improve the screwing effect, and comprises a rack, a screwing assembly, a torsion sensor and a display device, the rack is movably placed on a workbench, the bottom surface of the rack is provided with a non-circular groove / hole, and the display device is arranged in the non-circular groove / hole. The rack comprises a mounting table, a vertical frame fixedly connected with the mounting table, and a cantilever fixed to the top end of the vertical frame and provided with a through hole. The screwing assembly comprises a connecting rod penetrating through the through hole, a handle fixed to the top of the connecting rod, a clamping head fixed to the bottom of the connecting rod, and two clamping jaws installed at the bottom of the clamping head and adjustable in position on the clamping head. The torsion sensor penetrates through the upper surface and the lower surface of the workbench and is fixedly connected with the workbench, the detection end of the torsion sensor extends out of the upper surface of the workbench and is inserted into the non-circular groove / hole, and the outer contour shape of the detection end of the torsion sensor is matched with the inner contour shape of the non-circular groove / hole; the display device is electrically connected with the torsion sensor.

The invention relates to a dexterous lunar surface operation robot, which belongs to the technical field of aerospace / the field of lunar exploration, and comprises a specially designed mobile lifting system, a mechanical arm operation system, a navigation control system, a communication system, an energy system and a thermal control system, the mode that a foldable suspension supports local lifting of the additional platform is preferably adopted, meanwhile, the scheme that a large mechanical arm and a small mechanical arm are matched for cooperation and a tail end tool can be replaced is preferably adopted, the task operation space is expanded, the task operation height requirement is met, energy is saved, and the problem that in the prior art, the size and the weight cannot be considered at the same time is solved. And the method can adapt to different task scenes so as to solve the problem that in the prior art, the quality and the operation freedom degree cannot be considered at the same time, the operation freedom degree is met, meanwhile, the task reliability is considered, and most tasks can still be completed under the single-arm fault condition.

The utility model discloses a limiting device capable of controlling underground drilling construction depth. The limiting device comprises a triggering mechanism and a connecting rope mechanism. The triggering mechanism comprises a magnetic sensing switch, a magnetic block is arranged in the magnetic sensing switch, a first wire is arranged in the cable box, and the two ends of the first wire are connected with the magnetic sensing switch and a drilling rod respectively; the connecting rope mechanism comprises a steel wire rope pulley, a steel wire rope is stored on the steel wire rope pulley and passes through a magnetic sensing switch, the end, away from the steel wire rope pulley, of the steel wire rope is connected with a drilling rod, and a magnet is installed on the steel wire rope. According to the limiting device capable of controlling the underground drilling construction depth, the drilling limiting effect is achieved by controlling the length of the steel wire rope in a magnetic sensing switch triggering mode or a rotating disc gear triggering mode, accurate control over the underground drilling construction depth is completed, and the problems of resource waste caused by ultra-deep depth and unqualified quality or reworking caused by insufficient depth are solved; and meanwhile, process switching is accelerated, and working efficiency is improved.

The utility model relates to the technical field of oil-resistant automotive trim fabrics, in particular to an oil-resistant automotive trim fabric coating device which comprises a storage tank, a baffle is fixedly connected to the top end of the storage tank, a first limiting groove is formed in one side of the baffle, a spring is fixedly connected to the interior of the first limiting groove, and a second limiting groove is formed in the other side of the baffle. According to the discharging device, through the arrangement of the discharging baffle, the first limiting groove, the spring, the limiting block, the first rotating shaft, the second rotating shaft, the first roller, the motor, the second roller, the fixing plate, the second limiting groove, the rubber strip and other components, the discharging baffle is arranged, and therefore the discharging effect is improved; through the arranged first limiting groove, limiting blocks and springs, under the action of elasticity of the springs, the limiting blocks are pushed downwards, the bottom ends of the limiting blocks are always attached to the baffles, the first roller and the second roller are driven by the limiting blocks to be always attached, and the device can be compatible with automobile interior fabric with different thicknesses and sizes.

The invention relates to the field of interventional medical instrument consumables, in particular to nickel-titanium core wire chemical etching equipment and a core wire preparation method, and the nickel-titanium core wire chemical etching equipment comprises a feeding mechanism, an etching mechanism, a traction mechanism and an adjusting mechanism; the feeding mechanism is used for supplying core wires, and one end of each core wire is in transmission connection with the traction mechanism; the etching mechanism is located between the feeding mechanism and the traction mechanism, and the core wire penetrates through the etching mechanism; the adjusting mechanism comprises a first transmission assembly and an adjusting assembly. The adjusting assembly is used for adjusting the transmission ratio of the first transmission assembly. The traction mechanism comprises a rack, a traction assembly used for pulling the core wire and a detection assembly used for detecting the movement length of the core wire, the traction assembly pulls the core wire to move through the first transmission assembly, and the detection assembly is in transmission connection with the adjusting assembly. The function of adjusting the moving speed state of the core wire is achieved, and the problem that the core wire quality is affected due to insufficient size precision of a core wire grinding section is solved.

The invention belongs to the technical field of hot dip coating, and relates to an alloyed powder spraying system and a zinc-aluminum-magnesium coating process based on the alloyed powder spraying system.The alloyed powder spraying system comprises the following steps that 1, alloyed powder is dried for standby application, when the alloyed powder is prepared, high-magnesium-content zinc-aluminum-magnesium alloy is molten in a zinc-aluminum-magnesium pot to form hot dip molten liquid, and the hot dip molten liquid is cooled to the room temperature; the hot-dip coating is waited for use during hot-dip coating; 2, the strip steel is fed into a zinc-aluminum-magnesium pot to be subjected to hot dipping, so that a high-magnesium-content zinc-aluminum-magnesium coating is formed on the surface of the strip steel, and air knife treatment is conducted; and 3, the standby alloy powder in the step 1 is adopted as a cooling agent, alloy powder spraying is conducted on the surfaces of the two sides of the strip steel subjected to hot dipping at the same time through an alloy powder spraying system, a high-magnesium-content zinc-aluminum-magnesium coating is cooled and serves as a nucleation for solidification of a zinc-aluminum-magnesium coating alloy, and the high-magnesium-content zinc-aluminum-magnesium coating alloy is obtained. And cooling control over the solidification process of the high-magnesium-content zinc-aluminum-magnesium coating is achieved by adjusting parameters of the alloy powder.