186results about How to "Precise rotation" patented technology

The invention relates to the technical field of quartz crucible production, in particular to a quartz crucible coating device which comprises a spraying cabin, a spraying assembly and a multi-dimensional crucible support, the spraying assembly is used for evenly spraying coating materials to the surfaces of crucibles in the coating process, and the multi-dimensional crucible support is responsible for enabling the crucibles to receive spraying from different angles through a multi-axis rotating system. The device is further provided with a vacuum and exhaust system, a gas supply system and an atmosphere heating system which are respectively responsible for controlling a vacuum environment, gas supply and heating conditions in the spraying cabin. According to the invention, the multi-dimensional crucible bracket with high integration level has a flexible rotation function in the horizontal axial direction and the vertical axial direction, so that the crucible can be sprayed from multiple angles in the coating process, the rotation and positioning of the crucible in the horizontal axial direction and the vertical axial direction are more accurate, and the accurate control of the coating process is ensured; and the uniformity and the consistency of the coating thickness are effectively improved.

The invention provides wafer coating equipment and a wafer coating process, and the wafer coating equipment comprises a rack, a driving assembly, a stop lever, a rotating seat and a wafer clamp, a limiting block is arranged on the rack, and a first limiting groove and a second limiting groove are formed in the limiting block; the driving assembly comprises a driving device and a transmission shaft; the gear rod is connected to the transmission shaft in a penetrating mode, a first limiting protruding block and a second limiting protruding block are arranged at the two ends of the gear rod respectively, the first limiting protruding block is provided with a first limiting face used for abutting against the first limiting groove, the second limiting protruding block is provided with a second limiting face, and the second limiting face is used for abutting against the second limiting groove after the transmission shaft rotates by 180 degrees. The second limiting surface and the first limiting surface are coplanar, and the axis of the transmission shaft is located in the second limiting surface; the rotating seat is respectively connected with the transmission shaft and the wafer clamp; the wafer clamp is used for placing a wafer. According to the wafer coating equipment, limiting is carried out through a mechanical structure, adjustment is convenient, the positioning precision is high, the structural rigidity is high, and the reliability is improved.

The invention relates to a cone ring installation structure and method suitable for a 10-150 MW generator, and belongs to the technical field of steam turbine generators, the cone ring installation structure is of a ground bearing type structure, the cone ring installation structure comprises a stand column, a mechanical arm main machine and a clamp structure, the stand column is provided with the mechanical arm main machine, the mechanical arm main machine comprises two mechanical arm joints capable of rotating by 360 degrees, and the lower end of the mechanical arm main machine is connected with the clamp structure; and the conical ring is quickly butted and fixed by using a quick connector on the clamp structure. The operation mode of cone ring assembly is changed into mechanical operation from manual operation, manpower resources are saved, and the assembly precision and the operation efficiency are greatly improved.

The invention belongs to the technical field of ball serving devices, and particularly relates to a pet ball serving device which comprises a plurality of base bodies which are detachably arranged, each base body is provided with at least one channel splicing part used for forming a ball inlet channel, when all the base bodies are installed together, all the channel splicing parts are spliced with one another, a complete ball inlet channel is formed in the base bodies, and the whole ball inlet channel is formed by the channel splicing parts. The ball inlet channel is provided with a ball inlet section with a ball inlet and a ball serving section with a serving opening, and the ball serving device is arranged at a driving window of the ball serving section and used for serving pet balls; the ball feeding device is arranged at the ball feeding window of the ball entering section and used for conveying the pet balls into the ball serving device; the driving control device is provided with a ball serving sensing module arranged on the ball entering section, the pet balls entering the ball entering section are recognized through the ball serving sensing module, and the ball feeding device and the ball serving device are controlled to work. When the ball inlet channel needs to be cleaned, all the base bodies are detached, the corresponding channel splicing parts on the base bodies are cleaned, and therefore the ball inlet channel is convenient to clean.

The utility model discloses a polaroid rectangular one-way edge grinding device, belongs to the technical field of polaroids, and aims to solve the problems that chippings cannot be cleaned and the rotation angle accuracy is not high. The polaroid rectangular one-way edge grinding device comprises a box body, a bottom plate is fixedly connected to the bottom in the box body, a box door is hinged to the front side of the box body through a hinge, and a rotating mechanism is arranged at the bottom in the box body; a dust collection mechanism is fixedly connected to the position, above the rotating mechanism, of the top in the box body, a second electric telescopic rod is fixedly installed at the bottom in the box body, the end of the second electric telescopic rod is fixedly connected with a mounting frame, a sliding groove is formed in the position, corresponding to the surface of the inner wall of the box body, of the mounting frame, and a motor is fixedly installed in the mounting frame; the output end of the motor is fixedly connected with an edge grinding roller; according to the polaroid polishing machine, through the arranged dust collection mechanism, chippings can be rapidly adsorbed and cleaned when a polaroid is polished, the situation that the polishing work is affected by accumulation of the chippings is avoided, and therefore the safety of the polishing work is improved, and the polishing quality is guaranteed.

The present invention discloses an aerial automated replacement device for a single lamp controller based on an unmanned aerial vehicle platform, comprising an unmanned aerial vehicle, a mechanical arm and a controller disassembly and assembly mechanism, wherein the mechanical arm is set up on the unmanned aerial vehicle, and the controller disassembly and assembly mechanism is fixed to the end of the mechanical arm; the controller disassembly and assembly mechanism comprises a rotating motor, a mechanical claw housing, a mechanical claw and a camera assembly for visual positioning when replacing the controller; the mechanical claw housing is fixed to the driving end of the rotating motor, the camera assembly is fixed to the mechanical claw housing, and a mechanical claw motor is arranged on the side of the mechanical claw housing close to the controller. In addition, the device is also equipped with an equipment recovery bin and an equipment replacement bin, which can be used to store recovered parts and replacement parts. The invention realizes the automatic replacement of a plug-in type single lamp controller installed on the top of a street lamp fixture in the air through a unmanned aerial vehicle platform, which greatly reduces the maintenance cost and safety hazards of this type of single lamp controller and improves work efficiency.

The invention discloses a motor with a PCB (printed circuit board) coil structure, and relates to the technical field of motors. A rotating shaft as the rotor assembly; the first induction magnet unit and the second induction magnet unit are disc-shaped; a gap is formed between the first induction magnet unit and the second induction magnet unit, and the first induction magnet unit and the second induction magnet unit are coaxially connected and fixed with the rotating shaft to form a rotor; the PCB coil is connected with the front end cover and the rear end cover to form a stator; the PCB coil is arranged in a gap between the first induction magnet unit and the second induction magnet unit; the PCB coil is electrified to generate a magnetic field which interacts with the magnetic field of the induction magnet unit to drive the rotating shaft to rotate; the application of the PCB coil enables the stator and rotor structures of the motor to be simplified, breaks through the complex structure of a traditional motor, enables the manufacturing cost of the motor to be reduced, and solves the problems that the structure of an existing motor is too complex, and the manufacturing cost of the motor cannot be further reduced.

The invention provides a paper feeding device of a labeling machine. The paper feeding device is composed of a paper placing frame and a mechanical arm. A mounting plate of the manipulator can move up and down and back and forth, and is provided with a gluing assembly capable of moving left and right, a suction cup assembly and a paper pressing strip. A paper feeding frame capable of moving back and forth is arranged in front of the paper placing frame, and a pressing roller capable of moving up and down is arranged in front of the paper feeding frame. The device has the advantages that the automation degree is high, all the components cooperate to achieve automatic paper feeding and labeling, and the production efficiency is improved; 2, the precision is high, the manipulator accurately positions and grabs, the gluing is accurate, the compression roller accurately rotates, the separation assembly ensures single-piece taking, and the labeling quality is improved; the adaptability is high, a paper surrounding plate of the paper placing frame, a suction cup assembly, a gluing assembly and the like can be adjusted, and the paper arranging function of the paper feeding frame adapts to different label paper; the reliability is high, and stable operation is ensured through an advanced mechanical structure and a control technology. The invention provides an efficient, accurate and reliable solution for the labeling link in the plastic film bag making industry, and has a wide prospect.

The utility model relates to the technical field of snake bone manufacturing, and discloses an endoscope snake bone automatic visual positioning and pressing device which comprises a main box body, a left servo screw rod module and a right servo screw rod module are fixedly installed in the main box body, a rotatable pneumatic claw is fixedly installed at the output end of a servo motor, a core rod is clamped in the rotatable pneumatic claw, and the core rod is fixed to the main box body. A CCD fixing table is fixedly installed on the rear side, away from the left-right lead screw module, of the outer surface of the upper side of the main box body, and a CCD visual device is arranged on the outer surface of the front side of the CCD fixing table. According to the automatic visual positioning and pressing equipment for the endoscope snake bone, the CCD fixing table is fixedly installed on the rear side, away from the left and right screw rod modules, of the outer surface of the upper side of the main box body, the CCD visual device is arranged on the outer surface of the front side of the CCD fixing table, and the CCD visual system is used for conducting on-site position confirmation on irregular pressing groove positioning points; and the characteristic that groove pressing points are different due to expansion and contraction of the snake bone is avoided, and the accuracy of punching and groove pressing of the device on the snake bone is greatly improved.

The invention relates to the technical field of injection molding machine injection tables, in particular to a mold-changing automobile part injection molding machine injection table and a using method thereof.The mold-changing automobile part injection molding machine injection table comprises a case and an injection molding machine injection table body, the injection molding machine injection table body is installed at the upper end of the case, and through holes used for being connected with locking mechanisms are formed in the four corners of the injection molding machine injection table body; the locking mechanism is installed at the upper ends of the two sides of the bottom plate, the adjusting mechanism is installed in the middle of the bottom plate, the driving motor is installed at the lower end of the bottom plate, the positioning frames are installed on the two sides of the upper end of the bottom plate, the positioning bolts are spirally connected to the inner sides of the positioning frames, and the supporting frame and the electric push rod positioning mechanism are installed between the positioning frames. According to the device, angle adjustment of an injection table of the injection molding machine can be automatically controlled, in the adjustment process, a worker only needs to observe the combination face of a nozzle and a mold, operation can be completed by a single person, and the adjustment mechanism can rotate through a single gear and four gears which can be controlled and adjusted according to actual needs according to needs; and the accuracy is higher.

The surgical bent forceps comprise a bent forceps tube body, one end of the bent forceps tube body is provided with a forceps head mechanism, and the other end of the bent forceps tube body is provided with a handle assembly; the tong head mechanism comprises a connecting piece, a connecting rod assembly installed in the connecting piece, and an upper tong head and a lower tong head which are installed on the connecting rod assembly. One end of the connecting piece is rotationally connected with the bent clamp pipe body; the handle assembly comprises two mounting parts and two handle parts, one mounting part is connected with the bent clamp pipe body, and the other mounting part is provided with an angle adjusting mechanism with a knob; a traction assembly is arranged in the bent pincer pipe body, one end of the traction assembly extends into the connecting piece to be connected with the connecting rod assembly, and the other end of the traction assembly extends out of the bent pincer pipe body to be rotationally connected with the installation part of the installation angle adjusting mechanism and extends out of the installation part to be connected with the angle adjusting mechanism. By arranging the angle adjusting mechanism, the forceps head mechanism can be driven to rotate, and the problem that a forceps head and an operating forceps body of an existing operating forceps cannot rotate relatively is solved.

According to the technical scheme, a first mechanical vibration disc and a second mechanical vibration disc are arranged on the two sides of a rack, and the mechanical vibration discs on the two sides convey collected male buckles and female buckles into a first buckle conveying mechanism and a second buckle conveying mechanism correspondingly; the first button feeding mechanism pushes out the conveyed button from the interior of the first button feeding mechanism, the male button is received by the button attaching base after reaching the upper die mechanism, the female button reaches the lower die mechanism after the button attaching base receives the button, then the upper die mechanism and the lower die mechanism rotate the button according to a preset angle, and meanwhile, the button attaching base rotates the button attaching base. A cloth liner is padded between the upper die mechanism and the lower die mechanism through the cloth liner mechanism and punched through the punching mechanism, and then the upper die mechanism descends to be matched with the lower die mechanism to punch and rivet the cloth liner between a male buckle and a female buckle. The device has the beneficial technical effects that the button sewing angle is more accurately adjusted in the pushing process, the button sewing angle is more accurately rotated to the required riveting angle in the rotary riveting process, and the cloth liner working procedure operation process is more automatic.

The utility model discloses a driving device of a solar tracking support, which comprises a body, a lubricating brush and a bottom plate, a plurality of spaces are arranged in the body, a notch is arranged on one side of the body, the lubricating brush is fixedly mounted on the surface of the notch arranged on the body, one end of the lubricating brush extends into the body, and the other end of the lubricating brush extends into the bottom plate. A through hole is formed in the surface of the body, a guide rail is arranged on the side of the body, a plurality of supporting balls are fixedly installed on the surface of the outer side of the body, the supporting balls are arranged around the hole formed in the body, and a first gear is fixedly installed in the center of the interior of the body. The center position of the first gear penetrates through a hole formed in the body and extends to the outer side of the body. The first gear and the second gear are arranged on one side of the first motor, the second gear is smaller than the first gear, the rotation inertia of the motors is limited through transmission of the gears, and through transmission of the gears, rotation of through connection is more accurate.

The utility model discloses a spiral swing oil cylinder with a pressure reduction structure, which relates to the field of spiral swing oil cylinders and comprises a spiral swing oil cylinder main body, an oil delivery pipe is fixedly arranged at the top end of the spiral swing oil cylinder main body, a pressure reduction disc is arranged in the oil delivery pipe, and the outer end of the pressure reduction disc is contacted with the inner wall of the oil delivery pipe. A metering assembly is arranged on the front side of the oil conveying pipe and comprises an external connecting pipe fixedly arranged on the front side of the oil conveying pipe, and an adjusting rod is fixedly arranged on the front side of the pressure reducing disc. The pressure reducing disc is driven by the adjusting rod to rotate in the oil conveying pipe, so that the angle of the pressure reducing disc is adjusted, the pressure reducing effect is achieved, the pointer rotates along with the adjusting rod in the rotating process, and the rotating angle of the pressure reducing disc can be judged according to the scale pointed by the pointer on the dial. Therefore, the pressure reducing disc can be fixed when rotating to a corresponding angle, so that the rotation of the pressure reducing disc is more accurate, and the adjusting precision is also greatly improved.

The utility model relates to the technical field of machining and grinding, and discloses a precision part machining and grinding device which comprises a workbench, a lifting mechanism is arranged on the workbench, an adjusting mechanism is arranged on the lifting mechanism and comprises a mounting plate, and two limiting plates are fixedly connected to the bottom of the mounting plate; a second motor is fixedly connected to the bottom of the mounting plate, a first motor is fixedly connected to the bottom of the mounting plate, one end of an output shaft of the first motor is in transmission connection with a first connecting frame through a first coupler, and the first connecting frame is rotationally connected to the outer sides of the two limiting plates; by starting the first motor, the first motor drives the first connecting frame at one end of the output shaft to rotate through the first coupler, so that the position of the device is adjusted, accurate rotation of the grinding head in multiple dimensions can be achieved, the machining requirements of different angles are met, and the adaptability and flexibility of the device are improved.

The utility model discloses a kind of injection molding machine forming injection molded part take-out machine, it is related to injection molded part take-out field, the utility model includes mechanical arm base, the lower portion of the mechanical arm base is provided with support plate, the inside of the support plate is T-shaped groove, the both sides of the T-shaped groove are provided with slide rail, the lower portion of the mechanical arm base is fixedly connected with carousel, the outer ring of the carousel is provided with a circle of gear teeth, the utility model is provided with mechanical arm adjusting mechanism, overcomes the rigid constraint of traditional fixed base, movable plate is slidably connected with support plate by T-shaped groove slide rail, and mechanical arm overall translation is realized, hydraulic drive mechanism promotes piston rod and drives movable plate linearly moving, this structure can compensate the installation position deviation of injection molding machine and mechanical arm without disassembling bolt, simultaneously, the rotary connection of carousel and base cooperates gear transmission mechanism, when first motor drive gear meshing carousel outer gear ring, accurate rotation is generated, and mechanical arm installation angle is directly changed.

The utility model relates to the field of industrial dust removal, in particular to a back-suction ash removal mechanism of a dust remover, which is arranged in the dust remover and positioned at the lower part of a dust removal bin and comprises a back-suction bin and a back-suction hopper, a back-suction fan is arranged in the back-suction bin and is used for generating back-suction wind power, and a rotatable baffle is also arranged between the back-suction bin and the back-suction hopper and is used for rotating the back-suction bin and the back-suction hopper. A blanking opening matched with the opening in the bottom of the back-suction hopper is further formed in the eccentric position of the surface of the baffle, a circle of brushes making contact with the baffle are further arranged at the opening in the bottom of the back-suction hopper, the baffle rotates to achieve communication or closing between the back-suction bin and the back-suction hopper, and a driving part is arranged at the bottom of the back-suction bin; during dust removal operation, the back-suction hopper is driven to rotate clockwise, independent and accurate back-suction dust removal can be carried out on dust removal bags in a plurality of dust removal bins, the thorough and uniform dust removal effect of the dust removal bags is ensured, the other dust removal bags can still carry out online dust removal while dust removal is carried out on one dust removal bag, and the dust removal efficiency of equipment is improved.

This utility model discloses a backrest lock, including a base plate. A locking hook and a locking plate are movably disposed on the base plate. The end of the locking plate has a pull head for connecting and cooperating with an external car pull rod, so that when the pull rod is pulled, the locking plate swings to release the restriction on the swing of the locking hook. The inner wall of the locking hook has a positioning strip for synchronously moving along the swing trajectory of the locking hook when it swings. The inner wall of the base plate has a positioning structure that works in conjunction with the positioning strip to guide the swing trajectory of the locking hook and limit the direction of the hook's swing, and an auxiliary structure that works in conjunction with the positioning structure to limit the wobbling or loosening of the locking hook when it is subjected to vibration and to improve the smoothness of the hook's swing. This utility model solves the problems of unstable hook swing trajectory and insufficient positioning accuracy in traditional backrest locks, easy loosening or wobbling of the locking hook under vibration, and insufficient smoothness of the hook's swing leading to operational jamming.

The utility model discloses a fastener with a bidirectional positioning function, which comprises a pipe body and a fixed connecting device, the end of the pipe body is fixedly connected through the fixed connecting device, and the fixed connecting device comprises a connecting threaded hole, a supporting guide positioning main body, a supporting base, a fixed connecting plate and a fixed connecting plate, the fixed connecting plate is fixedly connected to the upper end of the supporting base, the connecting threaded hole is formed in the middle of the fixed connecting plate, the fixed connecting plate is fixedly connected to the side end of the fixed connecting plate, and the supporting guide positioning bodies are distributed on the outer sides of the two ends of the fixed connecting plate. And the supporting, guiding and positioning main body is arranged on the fixed connecting plate. Two pipe bodies can be connected, fixed and used in a labor-saving, accurate, convenient and stable mode.

The present invention discloses a non-avoidance mechanical parking device, which belongs to the technical field of parking devices, and comprises a column, a lifting vehicle loading plate, a lifting drive device, a non-avoidance vehicle loading plate and a control system; the non-avoidance vehicle loading plate comprises a vehicle loading plate body, a left universal wheel, a right universal wheel, a left driving wheel, a right driving wheel, a differential and a translation driving motor; the control system comprises a control box, a wireless signal receiver, a remote controller, a laser transmitter, a laser receiver, a signal converter, an angle sensor and a distance measuring device; wherein the non-avoidance vehicle loading plate can automatically go out of the warehouse and return to the warehouse under the control of the control system to avoid affecting the lifting vehicle loading plate for storing or taking out vehicles, and the non-avoidance vehicle loading plate can also automatically adjust its posture to avoid deviation during the movement along the straight line direction where the laser is located; the present invention solves the problems of high installation and maintenance costs, poor user experience and untimely adjustment of the non-avoidance vehicle loading plate in the existing non-avoidance parking device.

The utility model discloses an automatic steel transfer conveying system of a roller bed before rough rolling, which comprises a rack and a rotary roller bed group, a motor group is arranged outside one side of the rack, and a cleaning component is arranged below the bottom of the rack and at a position corresponding to the rotary roller bed group. According to the utility model, through the three groups of motors in the motor group, the three No.1 motors control the three No.1 rotary rollers to rotate forwards, and the three No.2 motors control the three No.2 rotary rollers to rotate backwards and then rotate forwards, the combined motion mode can utilize the special structures and different rotation directions of the rotary rollers, so that the rotation efficiency is improved; compared with the prior art, the steel rotating device has the advantages that hot billet steel can quickly and accurately rotate by 90 degrees on the rotating roller way, steel rotating time is greatly shortened, the production rhythm is improved, and the first infrared sensor, the second infrared sensor and the third infrared sensor arranged above the rack can detect the position and the state of a slab.

The server case comprises a case body, a heat dissipation pipe, a heat dissipation adjusting mechanism, an adjusting auxiliary mechanism and a side wall hanging mechanism, the heat dissipation adjusting mechanism comprises a push rod, a rotating sleeve, a push frame and a flexible corrugated sheet, and the adjusting auxiliary mechanism comprises an adjusting pipe, a fixing plate, a supporting bearing, a gear disc and a rotating gear. The side wall hanging mechanism comprises a mounting frame, a base, a first movable plate, a second movable plate and a mounting plate, the position of a push rod can be accurately controlled through threaded fit, so that the positions or shapes of a push frame and a flexible corrugated sheet are adjusted, the air flowing path in the heat dissipation pipe is effectively changed, the heat dissipation efficiency is improved, and the service life of the heat dissipation pipe is prolonged. And the gear disc is meshed with the rotating gear, so that the adjusting pipe can accurately rotate, the position of the internal heat dissipation assembly is finely adjusted, and the optimal heat dissipation effect is achieved.

The utility model discloses a novel valve body press-fitting device, which relates to the technical field of electric driving force assembly assembling and comprises a press-fitting base, a press-fitting power mechanism, a press-fitting frame and a valve body rotating structure. By means of the valve body rotating structure arranged in the middle of the press-fitting channel, accurate rotation of the valve body can be achieved, and 100% correctness of the valve body in the positive direction and the negative direction is basically guaranteed. The problem that a traditional press-fitting device cannot accurately recognize the positive and negative directions of the valve body is effectively solved, and the press-fitting accuracy and reliability are greatly improved; the rotating angle of the valve body rotating channel is accurately controlled to be 90 degrees, and stability and consistency of the valve body in the press fitting process are guaranteed. By means of the design, damage to the valve body is avoided, the press-fitting precision is guaranteed, the product quality is improved, and therefore the press-fitting qualification rate of parts of the type is remarkably improved. The rejection rate caused by press fitting failure is reduced, the production cost is reduced, the production efficiency is improved, and remarkable economic benefits are brought to enterprises.

The utility model relates to a screw jack device for large -scale work piece support leveling, including support frame, screw rod, hand wheel, bracket and bolt, support frame whole presents the trapezoidal structure of little up big, is equipped with the mounting hole on the support frame, is equipped with the stop hole on the upper portion of mounting hole, hand wheel is installed in the stop hole, and can rotate relative to support frame, screw rod lower part passes in hand wheel and mounting hole in proper order, and is fixedly connected through trapezoidal thread and hand wheel screw thread cooperation, upper portion passes through bolt and bracket fixed connection, the utility model discloses through support frame adopts the trapezoidal structure of little up big, greatly enhanced the overall rigidity, effectively reduced the risk of falling when supporting large -scale work piece, provides the stable support foundation for large -scale work piece, guarantees the security of operation process, simultaneously through the trapezoidal thread cooperation of hand wheel and screw rod, single person can easily realize the lifting operation of screw rod, need not many people cooperation, significantly improves the operation efficiency, can satisfy the demand of large -scale work piece support leveling fast.

The utility model provides an operation driving mechanism of a tool magazine. The operation driving mechanism of the tool magazine comprises a fixing seat, a rotating disc, a driving motor, a driving piece, a driven piece and a gear device. The rear side face of the rotary disc is rotationally arranged on the fixing base, a rotary gear is arranged on the front side face of the rotary disc, and a plurality of cutter sleeves are wound around the outer side of the rotary gear. The driving motor is arranged on the front side surface of the turntable and is provided with a rotating shaft; the driving piece is connected to the rotating shaft and rotates along with the rotating shaft, and the driving piece is provided with two convex shafts; the driven part is connected to the driving part, a plurality of grooves are formed in the periphery of the driven part in a surrounding mode, and the grooves are connected with the two protruding shafts in a clutch mode so that the driving part can drive the driven part to generate intermittent rotation. The gear device is connected between the rotating gear and the driven piece. Therefore, the cutter sleeve on the turntable can be accurately rotated and positioned in the cutter changing process.

The utility model discloses a guide device for science and technology information exhibition, which comprises a storage box, an air cylinder is arranged in the storage box, the output end of the air cylinder is connected with a base, a multimedia all-in-one machine is arranged on the base, two positioning plates are arranged on one side of the base, and the tops of the two positioning plates are connected with an abutting plate. Two fixing seats are mounted at the top of the storage box, a rotating shaft is connected between the two fixing seats, a top cover is rotatably arranged on the rotating shaft, and torsional springs are connected between the top cover and the two fixing seats. After the multimedia all-in-one machine is used, in the process that the air cylinder drives the multimedia all-in-one machine to move into the storage box, the two torsion springs can drive the corresponding top covers to rotate to the top opening of the storage box to seal the opening, a safe storage environment is provided for the multimedia all-in-one machine through the retracting function, and meanwhile the multimedia all-in-one machine is convenient to use. The top cover arranged on the device can be automatically closed after the multimedia all-in-one machine is withdrawn, and dust and impurities are effectively prevented from entering the storage box.

The present invention discloses a welding device for producing oil film bearing bushings, comprising a welding frame, wherein an adjusting mechanism is arranged on the welding frame, the receiving frame is rotatably connected to the welding frame, the rotating mechanism is cooperatively connected to the receiving frame, a plurality of guide rods are arranged, and the plurality of guide rods are respectively mounted on the lifting frame, the design of the adjusting mechanism cleverly solves the problem of precise positioning in the welding process of the oil film bearing bushings, and significantly improves the welding accuracy and efficiency, and through the cooperation of the receiving frame and the lifting frame, combined with the adjustment ability of the differential bolt, the coarse adjustment of the position between the sleeve body and the connecting plate is realized, the setting of the guide rod ensures the vertical movement of the lifting frame, and ensures the accuracy of the adjustment, the combined design of the fixed sleeve, the push rod and the push plate provides stable and reliable support for the sleeve body, and the design of the internal rod and the friction plate, combined with the precise cooperation of the threaded block and the transverse rod, realizes the precise adjustment of the small distance.

The utility model discloses a right-angle ring core protractor which comprises a fixed ruler body, a ring core is arranged at the axis of the fixed ruler body, the end portion of a rotating ruler body is movably connected with the ring core, the end portion of a horizontal ruler body is fixedly connected with the fixed ruler body, and the opposite ends of the horizontal ruler body and the rotating ruler body are respectively provided with a 45-degree oblique angle. The upper surface of the fixed ruler body is provided with a circular angle scale of 3-15 degrees, and the long sides of the horizontal ruler body and the rotary ruler body are provided with linear scales, so that an angle is drawn while measurement is carried out, the texture surface is in contact and friction with the fixed ruler body only by sliding the L-shaped sliding block, the rotation of the rotary ruler body is more stable and accurate, and the accuracy of measurement and drawing is improved.

The utility model relates to the technical field of educational toys, and discloses a third-order icosahedron magic cube which comprises a ball shaft, a plurality of center blocks, a plurality of angle blocks and a plurality of inner edge blocks. The plurality of ball shafts comprise a plurality of magnetic shaft columns; a plurality of first magnets are arranged in the plurality of center blocks; a plurality of second magnets are arranged in the plurality of angle blocks; a plurality of third magnets are arranged in the plurality of inner edge blocks; the first magnet and the third magnet attract each other, and the second magnet and the third magnet attract each other. The magnets attract each other to assist a player to quickly reset and align the magic cube when the magic cube is restored, so that the restoration speed and the player experience are improved. The three-order icosahedron magic cube aims at solving the problems that a traditional three-order icosahedron magic cube is difficult to align during rotation and is prone to being blocked, and the recovery speed of the magic cube and the experience feeling of players are improved.