597results about How to "Smooth motion" patented technology

The invention relates to the technical field of wind power generation, and discloses a wind turbine generator set with a vibration reduction function and a construction method thereof.According to the wind turbine generator set with the vibration reduction function, a vibration reduction structure is additionally arranged, and the two elastic ends, arranged in the axial direction, of an elastic buffering piece are connected with the outer wall of a tower drum and the inner wall of a sleeve correspondingly; the elastic buffering piece can effectively absorb and relieve vibration of the sleeve, vibration impact borne by the tower drum is reduced, the overall stability of the wind turbine generator is improved, and safe and stable movement of the wind turbine generator is guaranteed. Compared with a conventional scheme that the diameter or the wall thickness of the tower drum is increased, the damping structure is simple in structure, convenient to install and maintain and low in cost.

The invention relates to a robot skill continuous learning method and device based on imitation learning, and the method comprises the steps: sequentially aiming at each task in a plurality of tasks; before a preset termination condition is met, circularly executing the following operations: inputting the observation image, the state information, a pre-acquired text instruction of the current task and a skill code book of the current task into a simulation learning strategy network, and predicting to obtain action information of the robot at the current moment, the skill code book of the current task is a plurality of pre-initialized learnable sub-skill vectors, and the skill code book comprises skill information of the skill code book of the previous task under the condition that the previous task exists; calculating loss based on the predicted action information of the robot and the real action information of the robot in the expert demonstration data; and updating the imitation learning strategy network and the skill code book of the current task based on the loss. The problems that skill selection is not flexible, and it is difficult to abstract the sub-skill hierarchical structure through manual skill design are solved.

The invention relates to the technical field of laser welding, and discloses a laser welding process for a large-thickness workpiece internally forming a keel, which comprises a welding gun, and a button is arranged on the welding gun. In the welding process, when welding needs to be canceled, the standard operation that the welding gun is lifted firstly and then the button is loosened is achieved, so that the situation that the welding wire is cooled due to the fact that the button is loosened firstly, and the welding wire cannot be smoothly broken and broken when the welding gun is lifted, so that the welding gun carries the welding wire to pull the welding seam, and the welding seam is damaged is avoided; the position of the ejector rod is adjusted, the ejector rod is adjusted to the other side, normal use is guaranteed, gas is injected into the hose through an external gas pump, generated gas flow is sprayed out through the annular pipe, the channel and the nozzle, welding slag on the movement path of the ejector rod is blown away and cleaned, the ejector rod cannot abut against the welding slag, and smooth sliding of the ejector rod is not affected; and the ejector rod can move smoothly.

The invention discloses an iron sheet machining device for a road guardrail, and relates to the technical field of guardrail iron sheet machining. Comprising a first supporting frame, a transverse translation mechanism is installed on the first supporting frame, and a laser cutting assembly used for cutting an iron sheet body is installed at the bottom of the transverse translation mechanism; the auxiliary conveying mechanism is used for auxiliary conveying of the iron sheet main body; the detection mechanism is used for detecting the position of the iron sheet main body; and the control module is based on detection information of the detection mechanism. Through the arrangement of the detection mechanism, the supporting and positioning assembly and the control module, the detection mechanism can be used for detecting the position and distance of the reinforcing ribs, and the control module controls the adjusting part to adjust the position of the wheel carrier on the supporting table so as to adapt to the distance of the reinforcing ribs, so that the iron sheet main body can stably move in the conveying process; and meanwhile, the cutting reliability is guaranteed.

The utility model relates to the technical field of spherical tank surface weld joint detection, in particular to a magnetic attraction type spherical tank weld joint detection robot which comprises a crawler crawling device, a weld joint detection device and a surface polishing device, and the crawler crawling device is used for providing walking power and adsorbing a climbing wall; the welding seam detection device is composed of a detection part and an imaging part, and the imaging part is composed of laser imaging equipment and infrared imaging equipment and used for scanning the interior and exterior of the spherical tank in the detection process and determining coordinate distribution of a welding seam; the detection part consists of a mechanical arm and flaw detection equipment and is used for detecting a welding seam; the surface grinding device is composed of a grinding wheel grinding machine and a sliding support. According to the spherical tank robot, the obstacle crossing capacity for the surface of the spherical tank is improved through the magnet, foreign matter on the welding seam and the surface of the spherical tank is removed through the grinding wheel polisher on the premise that the surface of the spherical tank is not damaged, the welding seam detection precision is improved, and nondestructive detection on the welding seam on the surface of the spherical tank is achieved through the welding seam detection device.

The multi-component condensation, adsorption and catalytic oxidation device comprises a condensation, adsorption and catalytic oxidation device body, and the condensation, adsorption and catalytic oxidation device body is composed of a catalytic combustion furnace, a catalytic fan, a buffer, a carbon tank, a waste gas fan, a condenser and a heat exchanger which are arranged in a machine shell; a functional mechanism is arranged outside the catalytic combustion furnace, and a cleaning structure for cleaning the filter plate is arranged on the filter cartridge. And a second synchronous structure is arranged between the rotating shaft and the rotating fan. The device has a three-stage condensation link for recovering and treating volatile organic compounds, a knocking plate and a piston pump are respectively driven to work through a second synchronous structure, a diaphragm pump is used for pumping water, and water mist sprayed by a spray head adsorbs impurities in flue gas and precipitates at the bottom of a filter cartridge; the filtered flue gas enters the volatile organic matter equipment to be treated, and the knocking plate can knock the filter plate when moving up and down in a reciprocating manner, so that the filter plate is prevented from being blocked.

The invention relates to a mechanical arm and a double-arm robot. The mechanical arm comprises a supporting body, a shoulder structure, a large arm, an elbow structure, a small arm and a wrist structure. The shoulder structure comprises a shoulder differential assembly, a shoulder rope driving assembly and a shoulder joint, and the shoulder joint has three degrees of freedom and comprises a shoulder rotating seat fixedly arranged on the shoulder differential assembly and a shoulder adapter which is pivoted to the shoulder rotating seat, fixedly arranged at the first end of the big arm and in transmission connection with the shoulder rope driving assembly; the wrist structure comprises a wrist fixing support, a wrist rope differential assembly, a wrist rotation driving assembly and a wrist joint, and the wrist joint has three degrees of freedom and comprises a wrist rotation support pivoted to the wrist fixing support and a wrist deflection support which is in transmission connection with the power output end of the wrist rope differential assembly and pivoted to the wrist rotation support; the wrist rotation driving assembly is installed on the wrist deflection support and used for being in transmission connection with the tail end mechanical arm. The shoulder joint and the wrist joint of the mechanical arm are small in mass and inertia.

The invention discloses an auxiliary switch driving device for an operating mechanism and a high-voltage circuit breaker. The auxiliary switch driving device comprises a bearing assembly; the transmission assembly is arranged on the bearing assembly, one end of the transmission assembly is externally connected with power output equipment, and the other end of the transmission assembly is movably connected with a guide assembly located at the bottom of the bearing assembly; the supporting assembly is mounted at the end part of the guide assembly and is used for connecting an auxiliary switch; under the driving of the power output equipment, the transmission assembly drives the guide assembly to move and pushes the supporting assembly to enable the auxiliary switch to rotate at the same time, so that signals of the auxiliary switch are changed. The switching angle of the auxiliary switch is accurately calculated according to the requirement for switching positions through position signals, the supporting assembly can push the rotating shaft of the auxiliary switch to rotate by different angles through cooperation of the guiding assembly and the supporting assembly in the auxiliary switch driving device, and therefore the requirement for sending different position signals can be met; accurate transmission of position signals can be achieved, and misoperation of other devices is avoided.

The utility model discloses a feeding belt return stroke bearing mechanism which comprises a support body, a feeding belt bearing wheel and a feeding belt side wheel set, the support body comprises a horizontal groove rail, a lead screw and a jacking arm, the lead screw is rotatably installed in the horizontal groove rail and is in meshing transmission with the bottom end of the jacking arm, and the lead screw drives the jacking arm through rotation to achieve lifting of the upper end of the jacking arm; the feeding belt bearing wheel is rotationally installed at the upper end of the jacking arm and abuts against the surface of the feeding belt in the return stroke in the working state, and the feeding belt in the return stroke is in an arch shape with the edges on the two sides lowered and the middle higher. The contact area of the bearing wheels and the feeding belt is reduced, static electricity is reduced, adhesion of residual materials and the feeding belt is reduced, the stability and reliability of operation of the feeding belt are guaranteed, the maintenance cost and the assembly and disassembly difficulty of the mechanism are greatly reduced due to the light-weight design, the mechanism body does not need to be replaced basically, and the production cost is reduced. And only the bearing wheel and the limiting wheel are maintained and replaced in time, so that the cost is greatly reduced.

The invention belongs to the technical field of robot automatic force control polishing of optical elements, and particularly discloses a robot polishing force speed planning method and system considering the surface shape precision and the machining efficiency of the optical elements. The method comprises the steps that based on the Preston theory, a material removal model of the small grinding head polishing device is established; acquiring surface shape data of a detection point of the optical element, and planning a polishing path of the optical element in an off-line manner; discrete cutter points are fitted, a parameterized position curve is obtained, points are taken uniformly to obtain surface shape optimization resident points, and a unit material removal matrix is established in combination with a material removal model; and constructing a first-step optimization model and a second-step optimization model, and obtaining the optimized contact force and feed speed. According to the invention, optimization of contact force and feeding speed during optical element processing can be realized, and high-quality optical elements can be obtained with high efficiency.

The invention discloses a reversing stator module and a conveying system, and relates to the technical field of magnetic drive conveying, the reversing stator module is provided with a first shunting end, a second shunting end and a third shunting end, and the reversing stator module comprises a first conveying section, a second conveying section and a third conveying section; the first conveying section extends from the first shunting end to the third shunting end, the second conveying section extends from the first shunting end to the second shunting end, and the third conveying section extends from the second shunting end to the third shunting end. The mover module can selectively move along one of the first conveying section, the second conveying section and the third conveying section, the conveying direction of the mover module can be changed, and the widths of the first conveying section, the second conveying section and the third conveying section are equal, so that the mover module moves more stably; the conveying efficiency of the rotor module on the reversing stator module can be improved.

The invention discloses a high-precision line laser wind power blade contour detection and analysis system, and relates to the technical field of wind power blade contour quality inspection. According to the invention, a motion path of a line laser contour scanner on a displacement conduction mechanism is provided with a starting acceleration area, a constant-speed stable area and a stopping deceleration area. The photoelectric receiving modules on the two sides comprise CCD light sensing modules, position parameters of the photoelectric receiving modules are preset, the position information of the scanner is obtained in real time, and the power of the horizontal laser module is adjusted according to the distance between the scanner and the CCD light sensing modules. And after the scanner enters the constant-speed stable area, acquiring and analyzing starting and moving conditions of the geometric center point of the light sensing area, comparing a displacement difference with a preset reference value to judge a moving state, marking a position point if abnormity occurs, and alarming if abnormity occurs for many times. According to the method, tiny motion state changes can be more sensitively captured, and after motion state abnormity occurs, detection problems can be timely and accurately found, so that the wind power blade contour scanning precision can be further guaranteed.

The invention relates to a bidirectional sealing check valve, which belongs to the technical field of valves, and comprises a check valve consisting of a valve seat, a valve pipe and a valve, the lower surface of the valve pipe is fixedly communicated with a drain pipe, and a drain hole communicated with the drain pipe is formed in the valve pipe; a sealing structure for sealing the drain hole is arranged in the valve pipe, and a connecting structure for linkage of the valve and the sealing structure is arranged in the valve pipe. A jacking structure used in cooperation with the sealing structure is arranged in the discharge pipe, and a communicating pipe is arranged between the valve seat and the jacking structure. According to the two-way sealing check valve, two-way sealing of the valve seat and the drain pipe is achieved through the valve and the sealing structure, and the water flow driving and connecting rod transmission mechanism modes are combined; the device has the advantages and advantages of efficient sealing and discharging, simplicity and convenience in operation, automation, strong adaptability, high reliability, convenience in maintenance, low cost, energy conservation, environmental protection, sustainability, improvement of production efficiency and economic benefits and the like.

A pesticide spraying vehicle comprises a vehicle body and a tank body, the tank body is fixedly connected to the upper surface of the vehicle body, a frame is fixedly connected to the upper surface of the vehicle body, a lifting mechanism is arranged in the frame, an anti-shaking mechanism is arranged in the tank body, the upper portion of the tank body is in threaded connection with a cover cap, and the tank body is communicated with the output end of a liquid pump. The liquid pump is fixedly connected to the upper surface of the vehicle body, and the output end of the liquid pump is fixedly connected with a hose. Through cooperation of a screw rod, a threaded block, a wedge-shaped block, a rolling wheel, a supporting rod, a supporting plate, a sliding rod, a sleeve and a spring, the screw rod drives the threaded block to move, the threaded block drives the wedge-shaped block to slide, the wedge-shaped block drives the rolling wheel to move, the height of the rolling wheel in the vertical direction changes when the rolling wheel moves, the rolling wheel drives the supporting rod to move, the supporting rod drives the supporting plate to move, and the supporting plate drives a square block to move. The square block drives the hollow pipe to move, then the spray head is driven to move, the height of the spray head is adjusted, and the screw rod is stopped rotating after the spray head is adjusted to the needed height.

The utility model relates to the technical field of storage tank uncovering, and discloses a single-motor drive multi-degree-of-freedom uncovering mechanism and a biological sample storage device.The single-motor drive multi-degree-of-freedom uncovering mechanism comprises a main body plate and a drive motor, the surface of the main body plate is provided with a track rack and a guide assembly, and the surface of the guide assembly is provided with a fixing plate; the surface of the fixing plate is rotationally connected with a rotating seat, a transmission assembly is arranged between the rotating seat and the track rack, the driving motor is installed on the top of the rotating seat, and an output shaft of the driving motor is connected with the transmission assembly. According to the single-motor-driven multi-degree-of-freedom cover opening mechanism, by arranging the driving motor, the track rack, the position guiding assembly, the rotating base and the transmission assembly, after a cover is grabbed, the driving motor is started, the motor drives the transmission assembly and the cover to move along the track rack together, and then the position guiding assembly is matched for position guiding, so that the cover can be automatically opened and turned over to the other side; the operation process is convenient and the occupied space is small.

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 the technical field of unmanned aerial vehicle launchers, in particular to a marine unmanned aerial vehicle launcher. The marine unmanned aerial vehicle launcher comprises a supporting frame, a bottom bracket, a telescopic piece, an angle adjusting assembly, a lifting frame, a front supporting assembly and a rear supporting assembly. The two ends of the telescopic pieces are rotationally connected with the supporting frame and the bottom bracket correspondingly, and the multiple telescopic pieces are arranged at intervals; the angle adjusting assembly is arranged on the bottom bracket and is in transmission connection with the lifting frame; the front supporting assembly and the rear supporting assembly are arranged on the lifting frame at intervals in the length direction of the lifting frame, and the front supporting assembly and the rear supporting assembly are both used for being connected with the unmanned aerial vehicle. The front supporting assembly locks or releases the lug rods through the lock catches, so that the levelness of the bottom bracket can be adjusted by adjusting the lengths of the multiple telescopic pieces, it is guaranteed that the levelness of the bottom bracket is within the set range, and therefore the launching accuracy of the unmanned aerial vehicle is guaranteed.

The utility model relates to the technical field of valves, and discloses a check valve, which comprises a valve body, a valve core, a valve core, a valve core and a valve core, the aperture of the first through hole is larger than that of the second through hole, and a step surface is formed at the joint of the first through hole and the second through hole; the support is arranged in the first through hole and is provided with a first mounting through hole which is communicated with the first through hole and is coaxial with the first through hole; the valve clack is arranged in the first through hole and comprises a valve clack body and a valve clack handle arranged on one side of the valve clack body, and the valve clack body is in lap joint with the step surface and is suitable for sealing the second through hole; the valve clack handle is movably arranged in the first mounting through hole in a penetrating manner; and the elastic piece is arranged between the valve clack body and the support. According to the check valve, the elastic piece is arranged between the valve clack body and the support, the opening pressure of the check valve can be dynamically adjusted through the elastic performance of the elastic piece, and therefore the check valve can better adapt to fluid pressure and flow changes under different working conditions, and the performance of a pipeline system is optimized.

The invention belongs to the technical field of metal oxides, and particularly relates to a preparation method of a high-oxygen-storage cerium-zirconium solid solution. The preparation method comprises the following steps: adding zircon salt, cerium salt and doped metal salt into water, stirring and preserving heat to prepare a salt solution; sequentially adding a dispersing agent and a precipitating agent into the salt solution, uniformly mixing, and precipitating to obtain turbid liquid; and sequentially carrying out aging and solid-liquid separation on the turbid liquid, and washing and roasting the obtained precipitate to prepare the high-oxygen-storage cerium-zirconium solid solution. By selecting the new precipitator and dispersant, the problem of insufficient oxygen storage capacity of the cerium-zirconium solid solution in the existing cerium-zirconium solid solution preparation method is improved, and the prepared high-oxygen-storage cerium-zirconium solid solution has good high-temperature sintering resistance.

The utility model relates to a reciprocating mechanism and a compression device, the reciprocating mechanism comprises a rotary transmission part, a reciprocating body, a first rolling part and a second rolling part, the rotary transmission part is provided with a first guide groove and a second guide groove, and the tracks of the first guide groove and the second guide groove are provided with wave crests and wave troughs which are staggered in the circumferential direction of the rotary transmission part; the reciprocating body is provided with a first mounting part and a second mounting part which are relatively fixed; the first rolling piece is arranged on the first mounting part and is matched with the first guide groove; the second rolling piece is arranged on the second mounting part and is matched with the second guide groove; when the rotating transmission part rotates, the displacement variation of the first rolling part and the displacement variation of the second rolling part in the axial direction of the rotating transmission part are equal. According to the reciprocating mechanism and the compression device, in the rotating process of the rotating transmission part, the first rolling part moving along the first guide groove and the second rolling part moving along the second guide groove can achieve the stable supporting effect at different positions of the peripheral side of the corresponding rotating transmission part correspondingly, so that the movement stability is improved.

The present application provides a five-axis CNC machining trajectory interpolation method, which relates to the field of CNC machining technology, including: extracting the denture machining contour; obtaining the denture contour NURBS parameter curve; deriving the homogeneous coordinate expression of the NURBS parameter curve in N-dimensional space; obtaining the coordinates of each point on the denture contour NURBS parameter curve, and calculating the curve length using a numerical analysis algorithm; for the denture contour NURBS parameter curve, calculating the derivative vector on the curve, and determining the curvature change of the curve at the interpolation point; locating the interpolation point coordinates according to the curve length and the derivative vector, and using the interpolation point coordinates for machining path planning. The present application can solve the technical problem of poor machining accuracy due to the uneven machining trajectory in the prior art, thereby improving the machining quality, significantly reducing the machining time and cost, and meeting the technical effect of high precision and high efficiency requirements for denture manufacturing.

The utility model discloses a fixing piece for chip packaging, which comprises an operation platform, a clamping and fixing mechanism, a flexible supporting mechanism and a supporting auxiliary mechanism, and is characterized in that the clamping and fixing mechanism comprises a mounting frame, an electric push rod, a guide block, a movable rod, a fixed rod and a clamping plate; the flexible supporting mechanism comprises an outer supporting pipe, an inner fixing pipe, a clamping rod, a locking block, a connecting rod, an unlocking block and a first reset spring, the supporting auxiliary mechanism comprises a threaded pipe, a thrust bearing, a directional pushing pipe and an unlocking groove, the clamping fixing mechanism is arranged, so that the reliability and stability of chip clamping are improved, accurate positioning of a chip in the packaging process is ensured, and the packaging efficiency is improved. The arrangement of the flexible supporting mechanism improves the protection and adaptability of the chip, reduces the damage risk of the chip, and achieves the adjustment of the clamping force.

The utility model discloses a garden nursery stock planting vehicle, which belongs to the technical field of nursery stock planting, and comprises a moving plate, two cylinders are arranged in the moving plate, the two cylinders are both connected with adjusting assemblies, one surfaces, close to each other, of the two adjusting assemblies are both connected with rotating assemblies, and the two rotating assemblies are both arranged in a supporting plate. The two supporting plates are connected to the movable plate. After the two clamping plates close to each other fix the nursery stock, the two air cylinders are controlled to contract, the moving toothed plate can drive the nursery stock to rotate through the gear, the rotating pipe and the rotating frame to move to a vertical state, the electric push rod is controlled to unfix the nursery stock, and the nursery stock moves downwards under the action of the gravity of the nursery stock. The two clamping plates can limit and centralize the nursery stock, so that the nursery stock does not topple over when moving downwards, and the nursery stock can smoothly move into the planting pit under the action of the gravity of the nursery stock to complete the planting operation.

The invention discloses a double-head carbon fiber printing device and a printing method, and belongs to the technical field of 3D printing, the double-head carbon fiber printing device comprises a rack, a working rotary table is fixedly mounted on the rack, two Y-axis sliding rail mechanisms are symmetrically arranged on the two sides of the working rotary table, an X-axis sliding rail mechanism is slidably connected between the two Y-axis sliding rail mechanisms, and two Z-axis sliding rail mechanisms are oppositely arranged on the two sides of the X-axis sliding rail mechanism; the two Z-axis sliding rail mechanisms are synchronously arranged on the X-axis sliding rail mechanism in a sliding mode, one Z-axis sliding rail mechanism is provided with the ultrasonic printing head, the other Z-axis sliding rail mechanism is connected with the laser printing head through the swing mechanism, the double-head design is adopted, the ultrasonic printing head and the laser printing head are integrated, parallel printing of multiple materials can be achieved, and the printing efficiency is improved. Compared with the prior art, carbon fibers and other base materials can be printed synchronously, flexible switching of multiple materials and multiple processes is achieved, the printing efficiency and precision are remarkably improved, meanwhile, switching of a single printing head does not need to be conducted frequently, path planning is more reasonable, and material waste is avoided.

The application discloses a powder bonding forming device and method for a complex geological model, which comprises a 3D printing control system, a material conveying tank, a powder falling and paving assembly, a forming box, an inkjet printing assembly, a rack, a forming box moving assembly, a longitudinal beam module and a powder cleaning assembly; the material conveying tank is fixed above the powder falling and paving assembly; the powder falling and paving assembly and the inkjet printing assembly are respectively fixed on longitudinal beam sliding rails of the longitudinal beam module through sliding blocks, and the two are separately moved without interfering with each other during printing and forming; the forming box is located directly below a rectangular space surrounded by the longitudinal beam module, and a forming platform is located in the forming box; the forming box moving assembly is arranged at the bottom of the forming box, and the forming box can be moved along a tow chain to realize moving in for printing and moving out for powder cleaning. The powder paving and bonding functions of the equipment are realized through different modules, the printing efficiency is improved, in addition, the forming platform is lifted from the side, the overall height of the equipment is greatly reduced, and stable vertical movement of the equipment is ensured.

The invention relates to the technical field of magnetic confinement nuclear fusion devices, in particular to a plasma vertical instability control method based on adversarial training, and adopts the technical scheme that the method comprises the following steps: collecting plasma displacement at several consecutive moments and current and voltage data of a vertical instability controller I C coil as observation values; the observation data are input into a plasma vertical displacement control model obtained through reinforcement learning training, and then the voltage of an I C coil is output as a control command. The opponent model is added in the adversarial reinforcement learning training process of the vertical displacement control model, and the plasma current target value in the training environment is disturbed, so that the anti-disturbance capability of the vertical instability controller is enhanced, and the overcurrent risk of the I C coil is effectively reduced.

The invention relates to the technical field of pressure maintaining equipment, in particular to modularized pressure maintaining equipment. Comprising a base used for horizontally fixing a material disc, and all pieces to be subjected to pressure maintaining are sequentially placed on the material disc in a rectangular array mode; a plurality of groups of pressure plates are arranged above the material plate, and a plurality of pressure maintaining air bags which are in one-to-one correspondence with corresponding pieces to be subjected to pressure maintaining are arranged on each pressure plate; the pressure maintaining air bags on each group of pressure plates are matched with each other to form rectangular array distribution which is the same as that of to-be-pressure-maintained pieces on the material plate; and pressure maintaining telescopic assemblies capable of driving the pressure plates to tightly press the part to be subjected to pressure maintaining are arranged on the pressure plates. According to the invention, each region on the tray is subjected to independent partitioned pressure maintaining through each pressure maintaining module, so that the pressure maintaining efficiency can be effectively improved.

The invention discloses welding equipment and method for a metal flexible film cylinder, which simplify the production process and realize continuous welding of the metal flexible film cylinder. The equipment comprises a feeding device and a welding device, the feeding device comprises a front material guide plate, a double-roller mechanism and a rear material guide plate; the front material guide plate is a feeding end, and the rear material guide plate is connected to a welding device; the double-roller mechanism comprises a pressing roller and a supporting roller which are arranged up and down, and an annular boss is arranged on the circumferential face of one end of the pressing roller. In the feeding direction, a guide groove opposite to the boss is formed in one side of the rear guide plate; the welding device comprises a cylindrical forming die, an upper welding wheel and a lower welding wheel. An included angle # imgabs0 # smaller than 90 degrees is formed between the axis of the forming mold and the straight line of the feeding direction of the feeding device, a spiral groove connected with the guide groove is formed in the circumferential face of the forming mold, a welding opening is formed in the track of the spiral groove, and the welding opening and the guide groove are collinear; the upper welding wheel and the lower welding wheel are arranged on the outer side and the inner side of the welding opening respectively and arranged along the tangent line of the spiral groove.

The application provides a focusing motor and a camera module. The focusing motor comprises a fixed part, a moving part, a focusing assembly, a magnetic attraction sensing part, a guide part and a position sensor. The fixed part comprises a first support arm and a second support arm connected with each other, and a light passage hole formed between the first support arm and the second support arm. The moving part is arranged in the light passage hole and can move in a preset direction. The magnetic attraction sensing part is arranged in the moving part. The angle between the magnetization direction of the magnetic attraction sensing part and the first direction and the second direction perpendicular to the preset direction is an acute angle. The guide part is arranged on the first support arm and corresponds to the magnetic attraction sensing part. The position sensor is arranged on the second support arm and corresponds to the magnetic attraction sensing part. The position sensor can generate an induction force with the magnetic attraction sensing part, so that the position sensor can sense the moving position of the moving part. The focusing motor can significantly reduce the size of the focusing motor, and can guarantee the guiding stability and the position detection precision required by the automatic focusing function while realizing the miniaturization of the camera module.

The invention discloses a multifunctional granular material repose angle calibration test device, and belongs to the technical field of granular material repose angle measurement. The device comprises a long cylinder lifting device, a parameter measuring platform, a particle pushing device, a particle filling and recycling device and a long cylinder, through ingenious cooperation of all the components, automatic cylinder changing, long cylinder clamping and lifting, parameter measurement and particle pushing and recycling are achieved; the automation level of a granular material repose angle measurement test is improved, and a large amount of manpower, material resources and time are saved; the granular material repose angle measuring device improves the test process of granular material repose angle measurement, reduces the test measurement error, improves the working efficiency, achieves the effect of centralized three-dimensional operation, saves the test space and cost, and makes a prominent contribution to the measurement of the granular material repose angle.