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Suction nozzle replacing device
ActiveCN222270342UEasy to unplugeasy accessGripping headsSemiconductor/solid-state device manufacturingStructural engineeringControl theory
The utility model provides a suction nozzle replacing device which comprises a fixing base, a support and a clamping plate, the support is connected with the fixing base in a sliding mode and can slide up and down, and a driving piece capable of driving the support to slide is arranged on the fixing base. A suction nozzle seat is arranged at the top of the support, a plurality of suction nozzle inserting holes are formed in the suction nozzle seat, gourd-shaped holes are formed in the positions, right opposite to the suction nozzle inserting holes, of the clamping plate, and the clamping plate is located above the suction nozzle seat and can horizontally slide in the length direction of the gourd-shaped holes. And a horizontal movement mechanism capable of driving the clamping plate to slide is arranged on the bracket. According to the utility model, a plurality of suction nozzles can be mounted on the suction nozzle seat in advance, so that the taking and placing actions in the suction nozzle replacement process are omitted, and the replacement efficiency is improved; through cooperation of horizontal movement of the clamping plate and vertical movement of the support, when the suction nozzle is replaced, the clamping plate drives the gourd-shaped hole to move horizontally, clamping or releasing of the suction nozzle is achieved, and operation is convenient.
Owner:GUANGXI ZHIHUI INTELLIGENT TECH CO LTD
Mechanical reinforcement wheel foot composite lunar rover wheel
PendingCN119239170Aimprove passabilityImprove stabilityExtraterrestrial carsWheel attachmentsVehicle frameReduction drive
The invention relates to a mechanical reinforcement wheel foot composite lunar rover wheel, and belongs to the technical field of deep space exploration, the mechanical reinforcement wheel foot composite lunar rover wheel comprises an inner wheel, an outer wheel and a mechanical reinforcement mechanism, the inner wheel and the outer wheel of the mechanical reinforcement wheel foot composite lunar rover wheel are concentrically and fixedly connected and rotate around a wheel shaft, and a sliding block is hinged to the inner wheel and is in sliding connection with a reinforcement rod; the boosting rod penetrates through the sliding block, is rotationally connected with the outer end of the eccentric rod and can rotate along with the inner wheel, the relative dip angle alpha between the eccentric rod and the frame can be actively adjusted through the dip angle motor, the eccentric rod is locked by the worm gear reducer, and the eccentric rod, the dip angle adjusting unit, the sliding block and the boosting rod jointly form a mechanical boosting mechanism; in the rolling process of the wheel-foot composite wheel, the extending position and the extending length of the reinforcement rod can be actively adjusted in real time according to the lunar surface condition, the traction force and the passing ability of the wheel are improved, meanwhile, the continuous rolling characteristic of the round wheel is kept, and the lunar rover has good movement stability.
Owner:CHINA AGRI UNIV +1
A medical injection mold that is easy to demould
The present invention relates to the technical field of medical injection molds, and in particular to a medical injection mold that is easy to demold, comprising a working frame, a fixed column and a discharge plate, a fixed column is fixedly installed on the top of the working frame at the center of one side of a lower mold base by bolts, a fixed cylinder is movably connected to the outer periphery of the fixed column, one side of the fixed cylinder is connected to an upper mold base that matches the lower mold base through a conical block, a heat sink for cooling and blowing air to the injection molded product is fixedly installed at the top of one end of the lower mold base by bolts, and a cleaning seat for cleaning and blowing air to the inside of the lower mold base is installed at both ends of one side of the top of the heat sink through connecting rods. The present invention drives the movable disk to move up and down in the fixed column through the fixed cylinder, and the gas is compressed through the cleaning nozzles and the heat sink nozzles on the cleaning seat and the heat sink, so as to clean the impurities remaining after the lower mold base is demolded and dissipate the heat of the product, thereby improving the quality of the product, having a simple structure, and realizing the linkage of cleaning and heat dissipation.
Owner:NANTONG BAIMAI MEDICAL TECH CO LTD
Injection molding part ejection mechanism and method and injection molding device
The invention relates to an injection molding part ejection mechanism and method and an injection molding device, and belongs to the field of injection molding machines. The injection molding part ejection mechanism comprises a support assembly and a sliding plate slidably connected with the support assembly, a plurality of lead screws extending in the sliding direction of the sliding plate are arranged on the support assembly, and the sliding plate is rotationally connected with the lead screws; the sliding plate is connected with an ejector pin, and the lead screw is in transmission connection with a motor. According to the ejection mechanism, the multiple lead screws are symmetrically arranged, the multiple lead screws are driven by the motor to synchronously rotate to push the ejector plate to achieve the ejection action, the unbalance loading torque is eliminated through the symmetrical arrangement of the multiple lead screws, the movement stability is good, the response speed is high, the precision in the aspects of positioning and synchronization is high in the mode that the lead screws are driven by the motor, the structure is simple, stability is good, and energy consumption is low; and the risk of oil leakage is avoided.
Owner:DONGGUAN TAIFU MASCH CO LTD
Glass furniture positioning clamp
Owner:JIANGXI RUIJING HOME DECORATION CO LTD
Feedforward compensation method and system based on acceleration feedback
PendingCN121979098Asuppress resonanceImprove robustnessProgramme controlComputer controlControl signalControl engineering
The invention discloses a feedforward compensation method and system based on acceleration feedback, and the method comprises the steps: obtaining and analyzing a motion instruction of a controller, determining expected speed information and expected acceleration information of a controlled object, determining an expected feedforward resultant force based on the expected speed information and the expected acceleration information, and determining a feedforward control signal based on the expected feedforward resultant force; determining the acceleration feedback force of the controlled object based on the real-time acceleration information of the controlled object; determining an acceleration feedback compensation force based on the acceleration feedback force, and determining an acceleration feedback compensation signal of the controlled object based on the acceleration feedback compensation force; and synthesizing the feedforward control signal and the acceleration feedback compensation signal to obtain a motion control instruction of the controlled object, and controlling the controlled object to move according to the motion control instruction. According to the method, open-loop feedforward prediction and closed-loop acceleration observation feedback are deeply fused, the robustness of external interference and internal reference change is enhanced, mechanical resonance is effectively inhibited, and the trajectory tracking precision, the anti-interference capability and the motion stability are improved.
Owner:BEIJING QTCREATE TECH
Speed change mechanism of motor
ActiveCN222615474Uavoid collisionExtended service lifeFluid-pressure actuatorsReciprocating piston enginesLow speedMechanical engineering
The utility model relates to a speed change mechanism of a motor, which comprises a shell II, a swash plate II and a plunger hole are arranged in the shell II, a spring and a speed regulation plunger are arranged in the plunger hole, the speed regulation plunger is of a cylinder structure, a spherical surface is arranged at one end of the speed regulation plunger and abuts against the swash plate II, a cavity is arranged at the other end of the speed regulation plunger, one end of the spring is positioned in the cavity, and the other end of the spring is positioned in the cavity. The other end abuts against the bottom wall of the plunger hole. By arranging the spring, the speed regulating plunger is always in contact with the swash plate II, and the contact points are kept consistent, so that the swash plate II is prevented from being impacted during high and low speed switching, and the service life of the swash plate II is prolonged; the speed regulation plunger is of a cylinder structure, the fit clearance between the speed regulation plunger and the plunger hole is small, the leakage amount is small, and the motor efficiency is hardly influenced, so that a sealing ring does not need to be installed on the speed regulation plunger, and the problem that the coaxiality of the upper size and the lower size of a sealing groove in a conical plunger in the prior art is not easy to control is solved; the motion stability is effectively improved, the product structure is simplified, and the production cost is reduced.
Owner:YANTAI AIDI PRECISION MASCH CO LTD
A multi-directional extension mechanism, leg rest and car seat
Owner:JIFENG SEAT (WUHU) CO LTD
A linear guide for CNC machine tools with adjustable counterweight
ActiveCN224274082UFlexible adjustment of stress statusImprove machining accuracyLarge fixed membersMaintainance and safety accessoriesNumerical controlTransmission belt
This utility model discloses a linear guide rail for CNC machine tools with adjustable counterweights, including a base. Linear guide rails are fixedly mounted on both sides of the top of the base, and the two linear guide rails are slidably connected to a slider. A first U-shaped frame is fixedly mounted on one side of the top of the slider. This utility model features a first fixed pulley on the slider and a second fixed pulley on the base, connected by a transmission belt. A T-shaped frame at the other end of the transmission belt is slidably connected to the inner wall of the U-shaped guide rail. Limiting pins are mounted on the T-shaped frame, and multiple counterweight plates are inserted through these pins. By inserting counterweight plates through the T-shaped frame and easily increasing or decreasing the number of counterweights, the stress state of the entire guide rail system can be flexibly adjusted according to different processing tasks or slider load changes. This helps optimize motion smoothness and reduce impact and vibration during operation.
Owner:CHANGSHU FENGZHISHENG MASCH TECH CO LTD