195results about How to "Reduce the hassle of manual operation" patented technology

The invention relates to an urban underground pipe network BIM rapid automatic modeling method. According to the method, programming processing is performed on original pipeline data information stored in an electronic database, pipeline data information in a standardized format are generated and then imported into BIM software to achieve automatic modeling, and programming processing comprises the following steps that (1) classifying the original pipeline data information according to attribute information and expression forms of all pipelines; 2) judging whether pipelines collide or not according to the classified pipeline data information, if yes, executing a step 3), and if not, executing a step 4); 3) according to a set avoidance rule, modifying corresponding pipeline data information, carrying out automatic avoidance, and executing the step 2); and 4) converting the pipeline data information subjected to automatic avoidance into pipeline data information in a standardized format,and importing the pipeline data information into BIM software to realize automatic modeling. Compared with the prior art, the method has the advantages of improving the modeling efficiency, reducingthe labor cost and the like.

The invention provides a trawl type garbage cleaning ship, and belongs to the technical field of garbage cleaning ships. The ship comprises a ship body structure, a first conveying belt and a collecting mechanism. A notch is formed in the tail part of the ship body structure; a collecting cabin is arranged in the ship body structure; an opening is formed in the deck surface of the ship body structure; the opening is communicated with the collecting cabin; the first conveying belt is obliquely arranged in the notch; the right end of the first conveying belt obliquely extends upwards out of thedeck surface of the ship body structure, and the end part is positioned above the opening; the left end of the first conveying belt obliquely extends out of the tail of the ship body structure downwards, a push plate is perpendicularly arranged on the belt face of the first conveying belt, the collecting mechanism is arranged at the tail of the ship body structure, and the collecting mechanism cancollect garbage on the water surface around the ship body structure to the first conveying belt. The cleaning area of garbage on the water surface can be increased, and the garbage cleaning efficiency is improved.

The invention discloses a method and device for automatically loading PKCS#11 modules to application programs, and belongs to the field of information security. The method comprises the following steps: obtaining a cache catalog of an application program; opening a security module database under the cache catalog of the application program; generating a security module database loaded module list; obtaining a pointer of the list; accessing to the list and judging whether the list comprises module names of to-be-loaded PKCS#11 modules; when the list does not comprise the module names of the to-be-loaded PKCS#11 modules, updating the list; writing the module names of the to-be-loaded PKCS#11 modules and an absolute catalog in the list; and storing the updated list. The method and device disclosed in the invention have the beneficial effects of automatically loading PKCS#11 modules to application programs, do not need the users to grasp a complicated manual loading method, saving the trouble of carrying out manual operations by the users, and providing convenience to the users.

The invention relates to a compact shelf, in particular to a rocking-handle-hidden type dual-drive compact shelf. The rocking-handle-hidden type dual-drive compact shelf provided by the invention is convenient to move and can prevent data from falling off. The rocking-handle-hidden type dual-drive compact shelf comprises a sliding rail, limiting plates mounted on the two sides of the sliding rail, at least two sliding wheels mounted on the two sides of the sliding rail, fixed rods mounted on the sliding wheels, a storage frame mounted between the at least two fixing rods, blocking rods uniformly mounted on the storage frame at intervals, and placing plates uniformly mounted on the storage frame at intervals. The compact shelf is provided with a moving assembly; the storage frame can be moved by controlling the rocking handle to rotate, so that operation is simpler; and meanwhile, the rocking handle can enter the frame body in a rotating mode, and then the rocking handle is hidden.

The invention provides an automatic filtering net replacement device and a PM2.5 filtering net box. The automatic filtering net replacement device comprises a driving wheel, a driven wheel, a filtering net, a fixing base, a plurality of hard shafts, sliding pressure blocks and a pressure block opening / closing device, wherein the rear end of the filtering net is wound on the driven wheel, and the front end of the filtering net winds around the plurality of hard shafts and extends to the driving wheel and is wound on the driving wheel; the hard shafts, the sliding pressure block and the pressure block opening / closing device are arranged on the fixing base; the sliding pressure blocks comprise two pairs of inner sliding pressure blocks and outer sliding pressure blocks which are respectively arranged at two ends of the hard shafts; and the pressure block opening / closing device is connected with the sliding pressure blocks. According to the device disclosed by the invention, the filtering net can be automatically replaced, and the running resistance and sealing property of the filtering net can be ingeniously separated by virtue of the opening / closing operation of the sliding pressure blocks, so that the device is capable of smoothly replacing the filtering net and has excellent sealing performance. Moreover, the hard shafts have a W-shaped structure in the space, so that the windward filtering area of the filtering net can be effectively enlarged, and the dust holding capacity of the filtering net is effectively increased.

The invention relates to the technical field of textile equipment maintenance, in particular to a textile equipment cleaning device. According to the problem that a thread residue is attached to a table board of textile equipment and thus cannot be cleared easily in the prior art, the following solution is put forward. The textile equipment cleaning device comprises a shell which is a hollow cylinder. A rectangular first through hole is formed in the bottom of the shell. Two sets of second through holes are symmetrically formed in the side edge of the shell. First rotating shafts and second rotating shafts are both installed inside the shell and in the first through hole of the bottom of the shell in a rotating mode. Belt pulleys are both installed on the two first rotating shafts and thetwo second rotating shafts. Belts are both connected between the two first rotating shafts as well as between the two second rotating shafts. Electrostatic precipitation cloths are both sewn to the outsides of the two sets of the belts. Recovery devices are installed in the second through holes. A driving device is installed on the side edge of the shell. The side edge of the shell communicates with an exhaust pipe. An air injection device is installed at the top of the shell. The textile equipment cleaning device is easy to operate, cleanliness of the table board of the textile equipment is guaranteed, and the recovery efficiency is high.

The invention relates to a rapid detection system for machine-harvested seed cotton water impurities in a purchasing link. The rapid detection system structurally comprises a seed cotton large impurity cleaning device, a seed cotton sample box, a driving transmission device, a cotton pressing device, an image acquisition and processing device, a moisture regain detection device and a control cabinet, the seed cotton sample box consists of a positioning plate and a high-transmittance glass box; the weighing device is composed of a weighing sensor, a supporting plate and an electric push rod. The driving transmission device is composed of a roller, a conveying belt motor and a conveying belt. The cotton pressing device is composed of an electric push rod, a connecting rod, a connecting plateand a high-transmittance glass plate. The image collecting and processing device is composed of a camera, a light source, a detection sensor, an industrial personal computer, a touch screen and the like. The moisture regain detection device is composed of a moisture regain detection sensor, a signal line and a measurement controller. According to the rapid detection system for the water impurities of the machine-harvested seed cotton in the purchasing link, the impurity content and the moisture regain rate of the seed cotton after the large impurities are removed can be rapidly detected, thetechnical problems that in the purchasing process, the impurity content and the moisture regain rate of the seed cotton have complex detection procedure, low speed and the like are solved, and a real-time basis is provided for transaction settlement of the seed cotton in the purchasing process.

The invention relates to a single-station punching mechanical arm structure which comprises a rack power device, a feeding rack and a main frame, wherein the main frame is composed of an upper frame body and a lower frame body, the feeding rack is installed on the top of the upper frame body, and the rack power device is connected to one side of the feeding rack; a material positioning rack is arranged in the middle of the upper frame body, a material rack is horizontally laid on the surface of the lower frame body below the material positioning rack, and a horizontal cylinder is fixed between the bottom surface of the material rack and the lower frame body; a feeding cylinder is installed in the main frame body below the material rack, an oil storer is installed in the lower frame body, and a power box is fixedly installed outside the main frame. The single-station punching mechanical arm structure has the advantages that when the structure is used, materials are placed on the material rack, pushed to the material positioning rack through the horizontal cylinder, then pushed to a specific height by the feeding cylinder, and finally sent to a needed mold by the feeding rack to be machined, the procedure that materials are placed one by one manually is omitted, the trouble of manual operation is saved, unnecessary material placing mistakes are reduced, a user feels safe, and the number of workers is reduced.

The invention relates to a grinding device, in particular to an extrusion grinding device for a herbaceous plant solid particle beverage. The invention is to provide the extrusion grinding device for the herbaceous plant solid particle beverage, which is high in working efficiency and good in grinding effect. The extrusion grinding device for the herbaceous plant solid particle beverage comprises a support, a hopper, baffles, rollers, an automatic grinding assembly and a discharging assembly, the hopper is arranged on the support, the baffles are rotatably arranged on the two sides of the hopper, the rollers are slidably arranged on the hopper, the automatic grinding assembly is arranged between the support and the hopper, and the discharging assembly is arranged on the hopper. The device is provided with an automatic opening assembly, so that a clamping block continuously moves upwards, and the effect of timed discharging under control is achieved; and the device is provided with the grinding assembly, so that extruded herbaceous plant solid particles can be ground, and it can be guaranteed that all the herbaceous plant solid particles are ground into powder.

The invention provides a temporary stopping plate with a fixed suction cup, with the suction cup inside, comprises a suction cup and a vacuum pump mounted outside the suction cup, the vacuum pump vacuumizes the suction cup for adsorption, The suction cup is provided with a shell at the top, the vacuum pump is internally sealed in the shell, and the shell is also provided with a power switch, a battery, a control circuit board and a negative pressure sensor connected with the vacuum pump as an electric circuit, and the vacuum pump is automatically controlled by the negative pressure sensor whenair leakage occurs in the suction cup. The invention can be reused, and is convenient to install and beautiful and generous at the same time.

The invention relates to a conveying device, in particular to a conveying device for electronic product detection. The conveying device for electronic product detection can automatically separate out and collect unqualified electronic products. The conveying device for electronic product detection comprises a bracket; a conveying belt rotationally arranged on the bracket; a fixing frame arranged on the bracket; a detector arranged on the fixing frame; a storage plate arranged on the fixing frame; a power motor arranged on the bracket; and a first transmission belt wheel set arranged between an output shaft of the power motor and the conveying belt. The conveying device is provided with an automatic loosening assembly, so that clamping plates move automatically, electronic products can be conveniently placed on a rotating disc, and the manual placing efficiency is improved.

The invention discloses a self-adaptive anti-hail net, and relates to the field of anti-hail nets. The self-adaptive anti-hail net comprises vertical rods fixed on the ground in a multi-row and multi-column arrangement array, wherein the two ends of the vertical rods in the first row and the last row are respectively and vertically provided with a side rod, and the height of each vertical rod is higher than that of each side rod; a plurality of anti-hail nets cover the vertical rods and the side rods, circular rings are fixedly arranged on four corners of each anti-hail net, and a pull wire isconnected between the two side rods of the first row and the second row, and the pull wire penetrates through the circular rings on the same side of the corresponding side rods in sequence, the two ends of the pull wire are tensioned by the ground anchor and then are fixed on the ground, any two adjacent anti-hail nets in the anti-hail net are sequentially and alternately provided with a plurality of connecting rings on adjacent side lines, an elastic rope penetrates through the connecting rings, the elastic rope penetrates through the connecting rings on the two side lines and then penetrates through the circular rings of the corresponding side lines, and the tail end of the elastic rope bypasses a torsion spring arranged on each vertical rod and then is fixed on the ground through the ground anchor. The anti-hail net is reasonable in design, the hail can be automatically unloaded, and the trouble of manual operation is saved.

The invention relates to a sales rack and particularly relates to an anti-falling electronic product sales rack. A technical problem to be solved by the invention is to provide the anti-falling electronic product sales rack capable of preventing electronic products from falling and facilitating comprehensive viewing of the electronic products. The anti-falling electronic product selling rack comprises a base, wherein at least two arc-shaped plates are rotatably connected to the base at equal intervals, square sliding grooves are evenly formed in the base at equal intervals, first sliding blocks are rotatably arranged on the square sliding grooves in a sliding mode, the first sliding blocks are matched with the arc-shaped plates, and the arc-shaped plates are connected with the arc-shaped plates in a sliding mode; first springs are connected between the first sliding blocks and the base, and a containing assembly is arranged on the base. The selling rack is provided with an opening assembly, and the arc-shaped plate is automatically rotated to be opened or folded by starting the speed reducing motor, so the trouble of manual operation is reduced.

The invention discloses a rare earth metal calendaring forming device and an implementation method thereof. The rare earth metal calendaring forming device comprises a heating machine box, an automatic feeding mechanism and a calendaring forming mechanism, wherein the upper end of the bottom of a first pushing assembly and a rare earth metal plate at the lowermost can be almost kept on the same horizontal line, and automatic discharging can be achieved easily; the elastic force of a third spring enables a connecting inner pipe and a pushing connecting rod to automatically stretch out and draw back front and back, and then rare earth metal plates are automatically pushed out, and through cooperation with a first spring and a second spring, the rare earth metal plates in a heating machine box shell are periodically and automatically pushed out in sequence for calendaring forming, so that the trouble of manual operation is reduced, the automation degree is high, and the calendaring forming efficiency is greatly improved; and the rare earth metal plates are discharged more smoothly through pipe wheels, the inclination of the rare earth metal plates at the upper end is minimized under the combination of the supporting force of a fourth spring and the supporting force of the rare earth metal plates which are not pushed out, so that the smoothness of discharging of the rare earth metal plates is further improved.

The invention discloses a disinfection odor removal system which comprises at least one liquid storage device, a spraying device, an odor detection device and a processing module, wherein the liquid storage devices are used for storing spraying liquid, the spraying device is used for spraying the spraying liquid, the odor detection device is used for detecting odor concentration, and the processing module is connected with the odor detection device and the spraying device and used for controlling the spraying device to spray the spraying liquid according to the odor concentration detected by the odor detection device. According to the disinfection odor removal system, the odor detection device can automatically detect the odor concentration in environments, the processing module controls the spraying device to spray the spraying liquid according to the odor concentration, namely, the spraying device is started to spray the spraying liquid to remove odor after the odor concentration reaches a preset concentration value, spraying of the spraying device is cut off when the odor concentration in the environments is lower than the preset concentration, so that disinfection and odor removal can be automatically achieved, and trouble of manual operation is omitted.

The invention discloses a special probe for soil detection, which comprises a handle, one end of the handle is provided with a through hole, a battery is fixed in a groove at the other end of the handle, an external thread is provided on the outer surface of the other end of the handle, and an electric motor at the inner top of the handle is provided. The telescopic rod is connected to the probe needle body through the movable rod. The end of the probe needle body is provided with a needle head, and the outer surface of the probe needle body is provided with a spiral pattern close to the needle head. The input end of the rod is electrically connected, the input end of the electric telescopic rod switch is electrically connected with the output end of the storage battery, and the other end of the handle is connected with a rotating device through an external thread thread. The special probe for soil detection is easy to operate and convenient to use. It increases the contact area with the soil, can change the length of the probe needle body, and can penetrate deeper into the soil layer. It is driven by machinery to reduce the trouble of manual operation. Enables faster insertion into soil.

The invention discloses a checking device for urine bag loading leakage. The checking device comprises a test bench, a urine bag pressure application device and a protection cover, wherein the urine bag pressure application device is installed above the test bench; the protection cover is installed on the circumference edge of the test bench; the urine bag pressure application device comprises anair cylinder, a loading block and an electromagnetic gas valve, wherein the air cylinder is connected with the electromagnetic gas valve through a compression air pipe; the lower end of a piston rod in the air cylinder is fixedly connected with the upper end surface of the loading block; the middle of the lower end surface of the loading block is provided with a signal switch connected with a cycling time relay, and in addition, the cycling time relay is electrically connected with the electromagnetic gas valve; the test bench comprises a test area and water discharge holes positioned on the edge of the test area, wherein the test area is also provided with a water leakage alarming device. Through the above way, the checking device has a simple structure, and urine bag loading leakage checking efficiency can be improved.

The invention discloses a wind tunnel inner sensor mounting device and method. The wind tunnel inner sensor mounting device comprises a fixing component, a mobile control component and a sealing component, wherein the fixing component comprises a fixing supporting part, the fixing supporting part is provided with at least one fixing sensor part, and each fixing sensor part is used for fixing a corresponding wind tunnel inner sensor; the fixing supporting part is connected with the mobile control component, the mobile control component is used for controlling the fixing supporting part to moveaccording to a preset speed or a mode, and further the wind tunnel inner sensor is driven to move in a corresponding mode at a preset speed; and the sealing component is arranged at a preset wind tunnel position to ensure building of a predetermined air flow field in the wind tunnel. The sealing requirements of the wind tunnel can be met, and the device and the method have the advantages that thespace occupied by the sensor can be reduced maximally, impacts on the air flow are reduced, the sensor moves regularly and freely, convenience and flexibility are achieved, the cost is low, and the efficiency is high.

The invention provides a transfer film pasting device for a jointed board and belongs to the technical field of production of wooden toys. The transfer film pasting device comprises a top board, two side boards, a second partition board, a first partition board, a transfer film conveying mechanism, a shearing mechanism, a pasting mechanism, a push mechanism and a stop mechanism. A pasting space isformed between the top board and the two side boards; a conveying belt is horizontally arranged under the pasting space; the second partition board is vertically and fixedly disposed between the topboard and the two side boards; the first partition board is vertically and fixedly arranged between the top board and the two side boards; the transfer film conveying mechanism can horizontally conveya transfer film to the position over the jointed board; the shearing mechanism can shear the transfer film off; the pasting mechanism can paste the transfer film onto the jointed board; the push mechanism can push the jointed board pasted with the transfer film out of the conveying belt; and after one jointed board enters the pasting space, the stop mechanism can stop the next jointed board fromentering the pasting space. By means of the transfer film pasting device for the jointed board, the transfer film with patterns can be fast pasted on the joined board, and time and labor are saved.

The invention discloses a clean and environment-friendly anti-clogging vibration screening closed bin structure which comprises a vibration screen body, a screen plate, an anti-clogging mechanism, a closed bin and a dust removal assembly. The screen plate is arranged in the vibration screen body, and the anti-clogging mechanism is arranged at the outer side of the screen plate in a sleeving mannerand arranged in the vibration screen body; and the closed bin is installed at the upper end of the feeding end of the vibrating screen body, and a dedusting assembly is arranged in the middle of theupper end of the closed bin. The clean and environment-friendly anti-clogging vibration screening closed bin structure has the beneficial effects that materials accumulated at the upper end of the screen plate can be spread, uniform sieving is facilitated, local blockage of the screen plate can be prevented, the sieving utilization rate of the whole screen plate is guaranteed, the sieving effect of the screen plate is improved, sieve hole blockage of the screen plate can be prevented, manual cleaning operation trouble is reduced, and the sieving effect of the screen plate is improved; and automatic anti-clogging treatment can be achieved, the structural design is ingenious and reasonable, the anti-clogging automation degree is high, and the trouble of manual operation is reduced.

The invention discloses a production process of silicon carbide micropowder, comprising the following steps: S1 sorting silicon carbide, S2 diluting semi-solid silicon carbide powder, S3 atomizing silicon carbide powder liquid, and S4 silicon carbide powder Drying, S5 to make finished silicon carbide powder, the vibration frequency of the ultrasonic vibrating screen is 50HZ, and the collector is a glass container. The silicon carbide is sorted by a hydraulic grading conical cylinder, which has a fast screening speed and can quickly separate the ultrafine silicon carbide. The atomization duration of the silicon carbide micropowder production process is 5 seconds, and the drying The time is 10 seconds. Since the silicon carbide is atomized, the contact area between the silicon carbide and the hot air increases to enhance the drying efficiency of the silicon carbide. The invention is suitable for batch screening and drying of silicon carbide, has good practicability and is suitable for further popularization.

The invention relates to a piling device, in particular to a building engineering foundation piling device. The construction engineering foundation piling device is high in efficiency, free of manual piling, convenient to feed and capable of effectively reducing the labor amount. A construction engineering foundation piling device comprises a base, idler wheels, a push handle, a first supporting frame, a storage frame, a supporting column, a lifting frame and the like, the idler wheels are rotationally arranged on the front side and the rear side in the base in a bilateral symmetry mode, the push handle is arranged on the left side of the base, the first supporting frame is arranged on the left rear side of the top of the base, and the storage frame is arranged on the right side of the top of the base. A supporting column is arranged on the left front side of the top of the base, and a lifting frame is slidably arranged on the upper side of the supporting column. And the motor works to make the pressing block move downwards intermittently to beat the pile body, the pile body is driven into the ground, in this way, the pile body does not need to be driven into the ground manually, and the overall working efficiency is high.

The invention relates to welding equipment, and particularly relates to intelligent welding equipment for a metal furniture stand column. The invention provides the intelligent welding equipment for the metal furniture stand column, and the intelligent welding equipment for the metal furniture stand column is safe to operate and does not need to be manually held by hand for welding. The intelligent welding equipment for the metal furniture stand column comprises a first supporting frame, a first fixing frame, a motor, a second fixing frame, a rotating rod, a second supporting frame and the like, the first fixing frame is arranged on the left side of the upper portion of the first supporting frame in a sliding mode, the motor is arranged on the first fixing frame, the second fixing frame is slidably arranged on the position, located on the right side of the first fixing frame, of the left side of the upper portion of the first supporting frame, the second fixing frame is connected with the first fixing frame and connected with the rotating rod through a roller bearing, and the second supporting frame is arranged on the top of the second fixing frame. An electric push rod works to push the stand column to move rightwards for welding work, manual pushing of the stand column is not needed, and more labor is saved and convenience is achieved.

The invention discloses a designing method of the positioning welding for a forklift portal frame based on the streamlined production, a portal frame welding positioner and a welding method of the forklift portal frame . The designing method comprises the steps that the statistics on the welding workload of each welding robot is conducted, the welding station is divided according to the production tact time, the production process layout is planned, the working position, structure form, positioning and clamping mode of the positioner are determined according to the welding position of the workpiece welding seam, and the power source of the positioner is selected; and the welding robot simulating is conducted according to the structure and welding position of the positioner, the structureof the positioner and the compliance of the theoretical weldability rate are verified, the action sequence of each station positioner and the coordination requirement with the robot action are designed, and a PLC control procedure is programmed for automatic welding. By means of the designing method, through the online process layout mode, the tediousness of the workpiece hoisting is reduced, thecompression of the auxiliary working time is maximized, the efficiency is further improved, and the positioning welding of the complex welding seam is achieved through the sequenced process thinking.

The invention discloses a verification device of a ground fault detection device. The verification device comprises a first fixed plate and a second fixed plate; a plurality of aligned through holes are formed in the surface of the first fixed plate; a shell aligned with the through hole is arranged at the periphery of the first fixed plate; a first electric telescopic rod is arranged in the shell; the telescopic end of the first electric telescopic rod is fixedly connected with the second fixed plate; clamping mechanisms are arranged on the inner circumferences of the first fixed plate and the second fixed plate; a circle of guide rail is arranged at the peripheries of the first fixed plate and the second fixed plate; a plurality of linear motors are arranged on the guide rail; a second electric telescopic rod is arranged on the linear motor; the telescopic end of the second electric telescopic rod is provided with a hanging mechanism; the first fixed plate and the second fixed plateare each provided with a driving mechanism; the first fixed plate is provided with a detection mechanism used for detecting a fault point of a power transmission line. The device can detect multiple power transmission lines and can move towards the power transmission lines in different directions according to needs, and detection of different power transmission lines is achieved.

The invention relates to a pickling device, in particular to a metal workpiece pickling device for electronic product machining. The technical problem to be solved by the invention is to provide the metal workpiece pickling device for electronic product machining, which is efficient and can carry out comprehensive pickling on electronic products. The metal workpiece pickling device for electronic product machining comprises a cleaning frame, wherein a mounting cylinder is arranged on the cleaning frame, a liquid discharging pipe is arranged on the cleaning frame, guide rods are fixedly connected to the two sides of the cleaning frame through screws respectively, sliding frames are arranged on the guide rods in a sliding mode, a mounting frame is connected between the sliding frames and at least two placing plates are arranged on the mounting frame. The metal workpiece pickling device is provided with a limiting assembly, so that clamping plates limit the electronic products, and the situation that the electronic products move to make contact with the cleaning frame during moving, and consequently the electronic products are abraded is prevented.

The invention relates to cutting equipment, in particular to laser cutting equipment for high-end metal materials for biomedical treatment. The technical problem of the invention is to provide the laser cutting equipment for the high-end metal materials for biomedical treatment, which has the advantage of being capable of realizing equal-length cutting and reducing manual operation. The laser cutting equipment for the high-end metal materials for biomedical treatment comprises a base plate, a first supporting plate, a first fixing plate, a laser head, a first sliding rod, a placing mechanism and a limiting mechanism, the first supporting plate is arranged on one side of the top of the base plate, the first fixing plate is arranged on one side of the first supporting plate, and the first sliding rod is arranged on one side of the first fixing plate in a sliding mode. Under the action of the volute spiral spring, the rolling wheel is driven to limit a metal material, and the metal material is prevented from deviating; According to the laser cutting equipment, by arranging a driving mechanism, people do not need to manually rotate a placing disc, and then the trouble of manual operation is reduced; and by arranging a protective sleeve, chippings generated when the metal materials are cut by laser can be prevented from falling onto a second rotating shaft.