32results about How to "Reduce the use of manpower" patented technology

The invention discloses a production line based on a visual identity robot. The production line comprises a visual identity system, the robot walking along a guide rail, a feeding conveying mechanism,first machining equipment, second machining equipment, cleaning equipment, transfer tables and a discharging conveying mechanism; the visual identity system involves an adjusting platform, a coarse positioning visual camera, a fine positioning visual camera and a processing module used for processing information identified by the coarse positioning visual camera and information identified by thefine positioning visual camera and feeding back processing results to the robot; and the robot is provided with a clamping part used for clamping workpieces, and the cleaning equipment is provided with cleaning tanks. According to the production line based on the visual identity robot, the production line adopts the robot to be matched with visual identity to automatically transfer the workpieces,so that the labor cost is reduced, and human errors are reduced; and the cleaning devices are arranged, so that the machined workpieces are free of scrap adhesion, and the machining precision is guaranteed.

The invention discloses a novel building pile driver which comprises an enclosure. A motor case is fixedly installed at the rear side of the enclosure. A servo motor is fixedly installed inside the motor case. One end of a rotating shaft of the servo motor is connected with a spindle in a transmission mode through a coupling. A driving gear is fixedly installed at one end of the spindle. A first gear and a second gear are arranged at the two sides of the driving gear correspondingly. One side of the first gear is fixedly connected with a first arc-shaped gear through a first connecting rod, and one side of the second gear is fixedly connected with a second arc-shaped gear through a second connecting rod. A rack is arranged at one side of the first arc-shaped gear. A threaded rod is weldedto the bottom end of the rack. An impact plate is arranged at one end of the threaded rod. According to the novel building pile driver, the servo motor, the spindle and the driving gear are arranged to be matched with the first gear and the first arc-shaped gear as well as the second gear and the second arc-shaped gear, and therefore the impact plate can be driven to move up and down back and forth so that pile bodies can be driven, and manpower is saved.

The invention provides a grinding machine facilitating discharging. The grinding machine comprises an outer shell; a motor box is welded to one side of the top of the outer shell; a servo motor is fixedly mounted in the motor box; one end of a rotary shaft of the servo motor sequentially penetrates through the motor box and the outer shell, extends into the outer shell and is in transmission connection with a driving gear; a driven gear engaged with the driving gear is arranged on one side of the driving gear; an electric pushing rod is fixedly mounted at the bottom of the driven gear; a grinding disc is fixedly mounted at the bottom end of the electric pushing rod; a side seal plate is arranged at a notch of one side of the outer shell; a clamping block is welded to the left side of the side seal plate; and one side of the bottom plate of the outer shell is clamped and connected with a clamping block through a formed clamping groove. According to the grinding machine facilitating discharging, by arranging the side seal plate to be clamped and connected with the outer shell, dismounting of the side seal plate is facilitated, a grinding box can be taken out of the outer shell conveniently, thus, discharging operation is simpler, labor force is saved, and time consumed by discharging is reduced.

The invention discloses municipal immune protection equipment. The municipal immune protection equipment comprises a frame body and a treading triggering mechanism, wherein a bottom plate is fixedly connected to the lower end of the frame body; a through opening is formed in the middle of the frame body; strip-shaped cavities, treatment chambers, air cavities and square cavities are formed in thetwo side walls of the frame body; the air cavities are located on one sides of the treatment chambers; the strip-shaped cavities are located below the treatment chambers; the square cavities are located on one sides of the strip-shaped cavities; the treading triggering mechanism comprises a pressing plate used for sliding in the through opening up and down; sliding ways matched with the pressing plate are arranged on the two inner side walls of the through opening; and the lower end of the pressing plate is elastically connected with the inner bottom of the through opening through two first connecting springs. The use of the equipment is completely triggered by stepping on the pressing plate by pedestrians, and a disinfectant is atomized through an atomization piece and is sprayed out, sothat the spraying range of the disinfectant is relatively wide, special workers are not needed, the use of manpower is reduced, and meanwhile, the disinfection effect is better.

The invention discloses a composite foundation for a collapsible loess region and a construction method. The composite foundation for the collapsible loess region comprises a slab foundation and screwanchors buried underground, wherein the slab foundation comprises a main column, a step and a bottom plate arranged sequentially in the vertical direction; the screw anchors are vertically arranged and connected with the slab foundation; multiple concrete piles are connected onto the bottom surface of the bottom plate and are vertically arranged along a bottom surface edge of the bottom plate; one ends of the concrete piles are connected with the bottom plate; the other ends of the concrete piles downwards extend into a soil body; and the concrete piles are matched with the screw anchors through resistance so as to constrain the offset settlement of the slab foundation. Under the slab foundation, the concrete piles are arranged on four corners of the bottom plate, and the concrete pile foundations and non-collapsible soil under collapsible loess form frictional resistance so as to apply a constraining force to the circumference of the slab foundation, so that the effects on maintaining the overall foundation stability and preventing the foundation from being subjected to offset settlement after the soil body on the upper part touches water are achieved, and the composite foundation is ensured to be stably used at the collapsible loess region.

The invention relates to the technical field of animal epidemic prevention and discloses a cow hoof medicine spraying bath which comprises a medicine spraying device and a control system. The medicine spraying device comprises a water distributor, first water distribution pipelines, second water distribution pipelines and nozzle groups, and the control system comprises a water pump, electromagnetic valves, a detection device and a processor. When cow hoof medicine spraying is required, a cow is driven to a medicine spraying area, and then the detection device detects cow hoof positions and transmits detection information to the processor; when the processor determines that cow hoofs reach preset positions, the processor controls the electromagnetic valves to open, medicines in the water distributor flow through the first water distribution pipelines and the second water distribution pipelines and are sprayed to the cow hoofs through the corresponding nozzle groups while the water pump deliveries the medicines from a medicine tank to the water distributor to guarantee continuous medicine supply and continuous medicine spraying. Therefore, automatic cow hoof medicine spraying is realized, labor consumption is reduced, and medicine spraying efficiency is improved.

The invention discloses an intelligent full-automatic packaging robot using method and an intelligent full-automatic packaging robot system, and relates to the technical field of packaging machine equipment. The intelligent full-automatic packaging robot system comprises a rack and a conveying mechanism; a leveling mechanism, a packaging mechanism and a dust-proof shell are fixed to upper part ofthe rack, and an air suction cover is fixed to the top of the dust-proof shell, and a feeding inlet and a discharging outlet are formed in the two side faces of the dust-proof shell correspondingly. Through cooperative use of the rack, the conveying mechanism and the packaging mechanism, when goods need to be packaged, packaging can be automatically conducted, use of labor is reduced, the packaging efficiency is improved, the packaging processing time is shortened, and the product quality is ensured; and through use of the leveling mechanism, when food to be packaged enters packaging equipment, surface leveling is conducted, a packaging film and a packaging box can be attached closely, the situations of side leakage and food containing impurities in the packaging process can be avoided, the packaging quality is improved, and the defective percentage is decreased.

The invention relates to a label defective product removal mechanism and a label inspection machine provided with the mechanism. The label defective product removal mechanism comprises a rack, whereina jacking assembly and a collecting assembly are separately arranged on the rack; the jacking assembly and the collecting assembly are vertically opposite; a material tape with a detected label passes through from the jacking assembly and the collecting assembly; the jacking assembly is used for jacking the material tape to be away from the surface of one side of the label and jacking the material tape to one side of the collecting assembly; and the collecting assembly is used for taking down the label jacked by the jacking assembly and transporting the taken-down label away from the materialtape. The label defective product removal mechanism can automatically take down the defective product label from the material tape, improves detection efficiency, and reduces vigor consumption of a worker.

The invention discloses a sun umbrella for sunshade, and relates to the technical field of sun umbrellas. The sun umbrella for sunshade comprises a sun umbrella body. A shell is arranged at a rib of the umbrella body. A storage battery is fixedly mounted on one side of the inner wall of the shell. An air blowing mechanism is arranged in the shell. A connecting plate is connected with the rear sideof an inner cavity of the shell. A sliding plate is connected into the shell. A magnetic clamping mechanism is arranged on one side of the sliding plate. A semi-ring is connected with the rear side of the shell. A clamping rod is arranged on one side of the semi-ring. One end of the clamping rod is slidably mounted on one side of the sliding plate. Anti-skid gaskets are pasted to the inner sidesof the clamping rod and the semi-ring. One sides of the two anti-skid gaskets are clamped into the outer ring of the sun umbrella body. Through the air blowing mechanism, air blowing is guaranteed, acool and comfortable environment is provided for people. Cooperation of the magnetic clamping mechanism facilitates the shell to be assembled and disassembled at the rib of the sun umbrella, and therefore double-effect is achieved, and better service is provided for people.

The invention discloses an extruder capable of automatically polishing workpieces. The extruder comprises an extruder housing, a working cavity is formed in the extruder housing, a material extrusionassembly is arranged in the working cavity, and the material extrusion assembly includes an extrusion die fixedly arranged on the inner wall of the rear side of the working cavity and a first slidingplate connected to the inner wall of the rear side of the working cavity in a up-down sliding mode and located on the right side of the extrusion die. Hollow barrel with abrasive paper is used, and when a hydraulic manipulator moves the extruded workpiece to the right, the workpiece can be polished by the rotating hollow barrel with abrasive paper to polish the workpiece; and a first sliding plateand a second sliding which can slide up and down are adopted, the process control of the material extrusion assembly and an automatic polishing assembly can be realized through the up-down sliding ofthe first sliding plate and the second sliding plate, so that the extrusion and polishing of the workpieces can be completed on same equipment, the transfer time of the workpieces is reduced, the useof manpower is reduced, and the work efficiency is improved.

The invention discloses a grain storage system for grain storage, and relates to the technical field of grain storage. The system includes a first storage tank, a first conveying cylinder, an impurityremoval box, a drying cylinder, a second storage tank, a second conveying cylinder, a material storage bin and an impurity storage box. The storage system is of a continuous type, continuous impurityremoval, drying and storage of grains can be carried out, not only can the work efficiency be increased, but also use of manpower can be reduced, and the economic benefits can be improved indirectly;through combined use of a first filter net, a fan, a through hole, a fan group, a connection hole, an exhaust hole and a second filter net, lightweight impurities and fallen grain hulls which are contained in the grains can be removed, the effect of impurity removal of the grains can be achieved, and the quality of the grains is improved; and through combined use of a drive motor, a central shaft, an adjustment plate and a material discharge hole, the grains can be introduced evenly into the material storage bin, so that accumulation of the grains in the material storage bin is prevented, andthe service life of the material storage bin is increased.

The invention provides an automatic paint spraying device for a PVC pipe. The automatic paint spraying device for the PVC pipe comprises a paint spraying platform, a feeding platform is connected to one side on the paint spraying platform through a feeding pipe, and a material receiving frame is connected to the other side of the paint spraying platform. A groove is formed in the upper surface ofthe paint spraying platform, a horizontal sliding track is arranged in the groove, and an electric telescopic rod is fixedly connected to the horizontal sliding track through a horizontal sliding block. A moving plate is fixedly connected to the top of the electric telescopic rod, a second electric telescopic rod is arranged in the part, located on one side of the horizontal sliding track, of thegroove, a fixing plate is arranged at the top of the second electric telescopic rod, a rotating motor is arranged on the fixing plate, a second horizontal sliding track is connected to one side of thepaint spraying platform through a connecting frame, and an electric lifting rod is fixedly connected to the second horizontal sliding track. An electric spray gun is connected to the bottom of the electric lifting rod through a connecting plate, and a control panel is arranged on the end face of the paint spraying platform. The automatic feeding of the PVC pipe is realized. The operation of painting and material receiving reduces the use of manpower, and solves the problems of waste of manpower and low working performance in existing PVC pipe paint spraying operation.

The invention relates to a cable snakelike arrangement device. The cable snakelike arrangement device comprises a base plate used for providing support, an arc-shaped plate used for bending a cable, and a hydraulic system used for providing power for the cable; and one end of the hydraulic system is connected with the base plate, and the other end of the hydraulic system is connected with the arc-shaped plate. A hydraulic transmission mode is used for replacing a manual mode, so that the use of manpower and material resources is reduced, the cost is reduced, the labor intensity is effectivelyreduced, the hydraulic transmission output is reliable, and the bending requirements for different cables can be met.

The invention discloses an injection molding machine, and relates to the technical field of injection molding equipment. According to the technical scheme, the injection molding machine is characterized by comprising a rack and an injection molding device arranged at the top end of the rack; a workbench for placing a mold is arranged below the injection molding device; the injection molding machine further comprises a feeding device arranged on one side of the rack; and the feeding device comprises a base, a threaded rod which is vertically arranged and is rotationally connected with the base,a driving piece for driving the threaded rod to rotate, and a feeding plate which is parallel to the base and is in threaded connection with the threaded rod. The injection molding machine has the effect of conveniently conveying the mold onto the equipment workbench.

The invention discloses a goods transportation system which comprises a control main machine, a transportation trolley, an RFID card and a data analysis and processing module, wherein the transportation trolley comprises an intelligent trolley and a cargo placing device; a first singlechip, a posture controller, a first memory, an RFID read-write module, a steering machine, a driving motor and a first communication module are arranged in the intelligent trolley; the cargo placing device comprises a mounting seat, a clamping assembly and a cargo placing plate; the clamping assembly comprises aclamping plate, an adjusting mechanism and a synchronous centering mechanism; the data analysis and processing module comprises a second communication module, a second singlechip, a second memory anda communication interface; the data analysis and processing module is connected with the control main machine through the communication interface; and the second communication module is connected withthe first communication module. The automatic operation is realized, the degree of automation is improved, the labor cost is reduced, and human resources are saved. Meanwhile, goods can be effectively clamped, it is ensured that the goods are in the middle and the center of gravity of a transportation vehicle is in the middle, and smooth operation is ensured.

The invention discloses a photovoltaic panel detachable supporting device, and relates to the technical field of photovoltaic panels, the photovoltaic panel detachable supporting device comprises a supporting leg, a supporting rod is fixed to the upper end of the supporting leg through a bolt, a positioning rod is fixed to the upper end of the supporting rod through a bolt, and a limiting device and a limiting box are fixed to the front end and the rear end of the supporting rod respectively; a power motor is fixed to one end of the limiting box, a lead screw is rotationally connected into the limiting box, the power motor is in transmission connection with the lead screw, a moving block is slidably connected to the surface of the lead screw, a frame is fixed to the upper end of the moving block, and a water outlet pipe is connected to the surface of the frame in a penetrating mode. According to the photovoltaic panel cleaning device, the movable frame and the water storage device are driven by the driving device to move, so that water flow stored in the water storage device can be discharged during moving, dust is washed, cleaning of the photovoltaic panel becomes automatic, and manpower is reduced.

The invention discloses a glass fiber texture clamping manipulator for laying fan blades. The manipulator comprises a substrate, a hanging device, a compressing device, a tailoring device and an inclining device. In order to overcome the defect that at least four persons are cooperated to lay fan blades, the invention provides the manipulator for laying the fan blades, so that two persons can layand tailor the fan blades smoothly. The manipulator is good in adaptability, and can be used for laying common glass fiber yardage rolls. The manipulator is convenient to operate and practical.

The invention relates to the technical field of cable processing, in particular to multi-layer wire stripping equipment for a seat ring heater cable. The equipment comprises a workbench, a cutting guide rail, a clamp holder, a recovery device and wire through rails, wherein multiple sets of wire through rails are arranged on one side of the workbench, the recovery device is arranged on the left side of the wire through rails and located on the workbench, the cutting guide rail is arranged on the right side of the wire passing rails and located on the workbench, the clamp holder is arranged at the upper end of the cutting guide rail and located on the workbench, the cutting guide rail comprises a sliding blade and a movable sliding block, the movable sliding block is located on the inner side of the cutting guide rail, and the sliding blade is located at one end of the movable sliding block. According to the invention, the stripped cable sheath is recovered through a mechanical winding device, and after the winding wheel is full, the cable sheath is cut off, a copper wire does not need to be cut off, and the stripped wire does not need to be manually arranged.

The invention discloses an automatic stripping device for an air conditioner screen. The automatic stripping device comprises a base plate, a rotary disc, an overturning device and a working table, abaffle is arranged on the left side of the upper portion of the base plate and is fixedly connected with the base plate, a strut is arranged in the middle of the upper portion of the baffle, the bottom end of the strut is rotationally connected with the baffle, a first gear is fixedly arranged at the lower end of the strut, a second gear is in meshed connection with the left side of the first gearand is rotationally connected with the output end of a first driving motor through a rotating shaft, the first driving motor is fixedly installed on the left side of the upper portion of the baffle,the rotary disc is arranged at the top end of the strut and is connected to the upper end of the strut in a sleeving manner, the overturn device is arranged below the right side of the rotary disc, the right end of the overturn device is rotationally connected with the driving device, and the driving device is fixedly installed at the left end of the upper surface of the working table. The automatic stripping device is simple in structure, good in using effect, high in automatic degree, high in production efficiency and favorable for large-scale production of an enterprise.

The invention discloses a spine surgery retractor convenient for clinical use in the orthopedics department, and relates to the field of surgery retractors. In order to solve the problems that an existing spine surgery retractor for clinical use in the orthopedics department cannot be conveniently adjusted, replaced and used, and manpower is wasted, the following scheme is provided. The spine surgery retractor comprises a left supporting base and a right supporting base which are symmetrically arranged, wherein one side face of each supporting base is fixedly connected with an installing frame; a screw is rotationally connected into each installing frame; the outer side face of the lower end of each screw is fixedly sleeved with a first gear; the outer side faces of the two screws on the same front side and the same rear side are each sleeved with a supporting plate in a threaded mode; a sliding way is formed in each supporting plate; sliding plates are arranged on the left side and the right side in each sliding way; supporting rods are fixedly connected between the two sliding plates on the same left side and the same right side; and the upper end face of each supporting rod is fixedly provided with a retractor body through a screw. The spine surgery retractor has the advantages that adjustment can be conveniently carried out, manpower is greatly reduced, and meanwhile different types of retractors can be conveniently replaced.

The invention provides an intelligent management system for forcibly limiting passing of electric vehicles at a traffic intersection, and relates to the technical field of traffic management systems. The intelligent management system comprises a first column body and a second column body, a second fixing plate is fixedly connected to the lower surface of the second column body, supporting legs are fixedly connected to the lower surface of the second fixing plate, and connecting shafts are movably connected to the positions, close to the bottom edges, in the supporting legs. And through holes are formed in the right side surface of the first column body and the left side surface of the second column body correspondingly, and a winding mechanism is arranged in the first column body. By using the winding mechanism, the steel rope for stopping use can be effectively wound and unwound, the problem of mutual winding of the steel rope in the use process can be avoided, manpower can be effectively replaced, use of manpower is effectively reduced, all-weather duty can be achieved, and meanwhile dispute with an electric vehicle owner can be avoided.

The invention belongs to the technical field of cable peeling and relates to repeated peeling and recycling equipment for a seat ring heater cable. The equipment comprises a workbench, a clamping device, pulley guide rails and a copper wire recycling device; the clamping device is arranged on one side of the upper end of the workbench; the copper wire recycling device is arranged on the other side of the upper end of the workbench; the pulley guide rails are arranged on the left side and the right side of the clamping device and located at the upper end of the workbench; a hydraulic push rod is arranged on the front portion of the upper end of the workbench; a pushing sliding rail is arranged on one side of the hydraulic push rod and located at the upper end of the workbench; and a copper wire recycling cavity is formed in the position, located at the upper end of the workbench, of one side of the pushing sliding rail; the clamping device comprises a telescopic blade, a limiting block and a through hole. According to the repeated peeling and recycling equipment for the seat ring heater, a stripped cable sheath is wound through a mechanical device, after a winding wheel is full of the cable sheath, the cable sheath is cut off, a copper wire does not need to be cut off; and the cable sheath is moved to the rear part through the guide rails without being manually sorted.

The invention discloses a municipal drainage engineering pipeline intelligent dredging system which comprises a supporting frame and a first supporting frame, a first driving motor is fixed to the inner top wall of the first supporting frame, a second supporting frame is fixed to an output shaft of the first driving motor, and a second driving motor is rotationally arranged on the inner top wall of the second supporting frame. A first bevel gear is fixed to an output shaft of the second driving motor, a plurality of second bevel gears are meshed with the first bevel gear, a first screw is fixed to each second bevel gear, a first connecting plate is fixed to the outer side wall of the second supporting frame, one end of each first screw penetrates through the second supporting frame and is rotationally arranged on the first connecting plate, and a first sliding block is in threaded fit with the first screw. The first sliding blocks are arranged on the first connecting plate in a sliding mode, a first rubber cleaning plate is fixed to one side wall of each sliding block, and the problems that an existing sewer cleaning device is large in limitation and cannot adapt to different occasions, and cleaned garbage and dirt can directly fall to the bottom of a sewer and cannot be collected and treated together are solved.

The invention discloses a grinding-free manufacturing method for buried hole plug resin of a high-density interconnection laminated circuit board. The method comprises the following steps of: performing an early procedure, namely, performing shearing and cutting work on supplied materials by using a shearing device according to a size requirement, and drilling a cut circuit board blank by using a drilling device so as to form buried holes; and carrying out a copper electroplating and thickening process,namely firstly carrying out copper deposition work, then depositing a layer of thin copper on the insulating hole wall of the drilled circuit board blank, completing the copper deposition work after forming the thin copper, and then carrying out pattern electroplating on the circuit board blank after copper deposition. According to the method, the resin is leveled after buried in the holes, and then dried; and the dried resin does not need to be ground, so that the grinding process is omitted; and therefore, manpower is saved, the production efficiency is improved, meanwhile, grinding tools, electric resources, water resources and the like will not be wasted for grinding work, and the production cost is greatly reduced.

The invention discloses a ceramic cleaning device. The ceramic cleaning device comprises a stepping motor and cleaning cotton, wherein a conveying belt is connected above the stepping motor, a cloth curtain is arranged above the conveying belt, a second rotating motor is arranged on the right side of a cleaning liquid bin, a rotating roller is connected below the second rotating motor, a hydraulicpump is fixedly connected below the rotating roller, a hydraulic rod is arranged below the hydraulic pump, the cleaning cotton is arranged at the lower end opening of the hydraulic rod, a fan is arranged on the right side of the second rotating motor, a liquid recycling bin is fixedly installed on the lower surface of the stepping motor, a filter net is movably connected to the interior of the liquid recycling bin, a water pump is connected to the left side of the liquid recycling bin, a water pipe is connected above the water pump, and a ceramic base is fixedly arranged on the inner side ofthe conveying belt. The ceramic cleaning device is mainly characterized in that an alkaline solution and water are fully stirred and then used for spraying on the ceramic, and the cleaning quality isgreatly improved through friction of the ceramic surface.

The invention relates to a die cutting mechanism and a die cutting machine. The die cutting mechanism comprises a mounting plate, a die cutter is fixedly arranged on the mounting plate, the die cutteris annular, a cutting edge of the die cutter is arranged at a port of one end of the die cutter, an included angle formed by the cutting edge of the die cutter and a horizontal plane is an acute angle, and the cutting edge of the die cutter exceeds the surface of one side of the mounting plate. The die cutting mechanism and the die cutting machine have the effects that excess materials in perforating holes can be torn down while the perforating holes in labels are cut out, the use of manpower is reduced, and the tearing efficiency is improved.

The invention discloses cleaning equipment for a cement prefabricated part manufacturing forming steel mold. The cleaning equipment comprises a mounting table, a mounting frame, a first mounting plate, a clamping device, a second mounting plate, a lifting device and a cleaning device. The cleaning equipment can solve the following problems existing when an existing cleaning device for the cement prefabricated part manufacturing and forming steel mold is used for cleaning the inner wall of the steel mold: when the existing cleaning device for the cement prefabricated part manufacturing and forming steel mold is used for cleaning the inner wall of the steel mold, a cleaning tool is manually used for cleaning, and the working efficiency of manual cleaning is low, a large number of steel molds consume a large amount of manpower, and common cleaning equipment is poor in cleaning effect, stubborn cement ash left on the inner wall of the steel mold cannot be effectively removed, and the next production of the cement prefabricated part is affected. According to the cleaning equipment, the cleaning efficiency of the steel mold can be improved, meanwhile, the use of manpower is reduced, and the higher cleaning effect can be achieved.

The invention discloses a teaching machining type intelligent manufacturing integration system which comprises a system control module, a conveying execution module, an alarming device, a buzzer and afan. The system control module and a receiving module are connected with each other. The system control module and a display screen module are connected with each other. The system control module isconnected with a conveying module which is connected with an electrical execution module, a machining execution module, the conveying execution module and an instrument execution module. A shell is arranged in the conveying execution module. The alarming device is arranged on the inner side of the shell. The alarming device is connected to the shell in a pasted manner. The fan is arranged on the upper side of the shell. The fan is connected to the shell through threads. By using the fan, dust on a teaching device can be removed, the dust is prevented from entering the inner side of the teaching device, the service life of the teaching device is prolonged, by using the alarming device, use of labor is reduced, and the investment of the cost is reduced.