247 results about "Sandpaper" patented technology

The application discloses a kind of wood comb tooth automatic polishing processing equipment, including rack and automatic polishing control system, the rack is provided with feeder, manipulator, sandpaper assembly and unloading area, the feeder is used to convey comb embryo to the material taking position of manipulator, the manipulator is used to grab comb embryo and moves to sandpaper assembly and is polished, after polishing is completed, manipulator places comb embryo in unloading area, and the automatic polishing control system is used to control feeder, manipulator and sandpaper assembly to execute corresponding action to complete the automatic polishing of comb embryo.The equipment can replace traditional simple polishing equipment and polishing method, eliminate high-intensity manual labor, improve the processing consistency of comb tooth quality, and improve polishing operation efficiency.

The invention provides an aluminum alloy pretreatment method based on complex reaction, which comprises the following steps: S1, polishing an LDH (Layered Double Hydroxides) growth surface by using abrasive paper, and cleaning and drying; s2, preparing a complexing agent solution, wherein a complexing agent is selected from at least one of tannic acid, gallic acid and protocatechuic acid; s3, the aluminum alloy sample treated in the step S1 is put into the complexing agent solution in the step S2, and constant potential is applied to the aluminum alloy; s4, preparing a mixed solution of Zn (NO3) 2.6 H2O and NH4NO3, and adding an ammonia water solution to adjust the pH value to 6-6.5; s5, immersing the aluminum alloy treated in the step S3 into the mixed solution in the step S4, and putting the aluminum alloy into a constant-temperature water bath kettle to generate a Zn-Al-LDH film; and S6, after the hydrothermal reaction is finished, cooling to room temperature, and washing and drying the obtained reaction product. The surface of the aluminum alloy is pretreated through the complexing agent, the potential between an intermetallic compound and an aluminum matrix can be effectively balanced, the micro-couple effect is fundamentally inhibited, and ideal conditions are created for uniform, compact and defect-free growth of LDH.

The utility model discloses a derusting device for welded pipe processing, which comprises a bottom plate, a vertical plate is fixed on one side of the upper surface of the bottom plate, a round hole is formed in the top end of the vertical plate, a rotating cylinder is rotatably connected in the round hole through a bearing, a clamping component is arranged in and outside the rotating cylinder, a top plate is fixed on the top end of the vertical plate, and the top plate is fixed on the top plate. A motor for driving the rotating cylinder to rotate is mounted on the upper surface of the top plate. According to the welding pipe polishing device, the bottom plate, the vertical plate, the rotating cylinder, the clamping assembly, the motor, the portal frame, the electric telescopic rod, the U-shaped frame and the polishing assembly are arranged, a welding pipe is fixed through the clamping assembly after being inserted into the rotating cylinder, then the polishing assembly is driven by the electric telescopic rod to descend, abrasive paper makes contact with the welding position of the welding pipe, and then the rotating cylinder is driven by the motor to rotate; and the clamping assembly can quickly fix the welded pipes with different diameters, so that the universality of the device is improved.

The application provides a sample polishing device, and belongs to the technical field of polishing equipment. The device comprises a supporting table, a positioning assembly and a polishing assembly arranged in sequence from bottom to top. The positioning assembly comprises rotating members and moving members respectively used for limiting two ends of a sample, and the rotating members and the moving members are respectively arranged at two ends of the top surface of the supporting table. The polishing assembly comprises a horizontal plate, a rack is arranged on the horizontal plate, a polishing member is arranged in the length direction of the horizontal plate, the polishing member comprises a rotating shaft, a gear is arranged at the upper end of the rotating shaft, a first bevel gear is arranged at the lower end of the rotating shaft, a second bevel gear coaxially arranged with the first bevel gear is arranged on one side of a roller arranged on a connecting seat, and a C-shaped block is vertically arranged on one side of the cantilever extension end. When the upper end of the C-shaped block is pressed against the rack, the gear is engaged with the rack, and the area of the annular sandpaper used for polishing is adjusted. The area of the annular sandpaper used for polishing the sample can be slowly adjusted during the polishing process, so that the grinding capacity of the annular sandpaper for polishing each part of the outer wall of the sample is consistent.

The utility model discloses a polishing and grinding head which comprises a main shaft, an elastic assembly, a grinding head assembly and a locking piece, the main shaft is sleeved with the elastic assembly, and the main shaft is detachably sleeved with the grinding head assembly; the locking piece is rotatably connected with the main shaft and located at the end, away from the elastic assembly, of the grinding head assembly, the locking piece can rotate between a locking position and an unlocking position, when the locking piece is located at the locking position, the length direction of the locking piece is perpendicular to the length direction of the main shaft, and when the locking piece is located at the unlocking position, the length direction of the locking piece is perpendicular to the length direction of the main shaft. When the locking piece is located at the unlocking position, the unlocking position is that the length direction of the locking piece is parallel to the length direction of the main shaft. The purpose of rapidly replacing the abrasive paper outside the machine and rapidly replacing the grinding head assembly inside the machine can be achieved, so that rapid dismounting and rapid mounting of the grinding head assembly are achieved, the working efficiency is improved, the abrasive paper is replaced outside the machine, and the danger coefficient is reduced.

The invention discloses a novel metal test piece end face polishing and grinding device which comprises a test piece chuck, a pressing device, a straight driven piece, a plane cam, a movable sliding block assembly body, a linear guide rail structure and a movable frame. The test piece chuck comprises a dovetail matching block, a test piece chuck block, a pressing screw and a chuck fixing screw. The pressing device comprises a cover plate, a compression spring, a lifting block, a threaded pin and a rolling bearing; the straight follower comprises a lifting block, an indexing block and a limiting screw. By means of the novel metal polishing and grinding device, the problem that after traditional manual polishing and grinding equipment conducts polishing and grinding, cambered surfaces and fillets appear on the polishing and grinding end face is solved, the yield of metallographic samples and the utilization rate of consumable items such as abrasive paper are increased, a linear one-way polishing and grinding mode is researched, developed and provided, and a novel semi-automatic mechanical polishing and grinding device is designed.

This invention provides a rapid preparation method for steel samples for transmission electron microscopy (TEM), relating to the field of physical analysis of steel materials. It is applied to the preparation of various steel samples, including heat-sensitive steels, using a composite binder of cellulose acetate, acetone, silica, and alumina. The binder is used to adhere one side of a wire-cut steel sample sheet to the sheet fixing surface of a grinding aid. A grinding aid area, parallel to the bottom surface of the sheet fixing surface, is provided on the grinding aid device. The grinding aid area is pressed, and sandpaper with progressively increasing grit is used to grind one side until a first preset thickness is reached. Then, the other side is switched, and sandpaper with progressively increasing grit is used to grind the second side until a second preset thickness is reached. The ground sheet is removed, thinned, punched, and electropolished to obtain the target steel sample. This invention can rapidly prepare steel sample sheets with a thickness of 30-50 µm, and the method is simple and has a high success rate.

The utility model relates to an abrasive cloth winding device which comprises a supporting plate, two parallel carrier roller frames are arranged on the supporting plate, carrier rollers are arranged on the two carrier roller frames, universal wheels are arranged at the bottom of the supporting plate, and a positioning frame is arranged on the outer side of the supporting plate. The positioning frame comprises a first side plate, a second side plate arranged at one end of the first side plate, a third side plate arranged at the other end of the first side plate and bottom plates arranged at the bottom end of the first side plate, the bottom end of the second side plate and the bottom end of the third side plate, and a bubble type gradienter is arranged at the top of the first side plate. A plurality of balance adjusting devices are arranged on the outer side of the positioning frame, and each balance adjusting device comprises a limiting plate, a supporting foot base and an adjusting bolt. And the levelness of the wind-up roller is convenient to adjust and is easy to feed back. The utility model has the advantages of convenient use and wide market prospect.

This invention discloses an optimized method for stator and rotor welding processes in the field of motor manufacturing, comprising the following steps: improving welding quality through pretreatment, coating with modified composite materials, and optimizing laser welding parameters. During pretreatment, the stator and rotor areas to be welded are sanded with 800-1200 grit sandpaper, followed by ultrasonic cleaning with acetone or alcohol for 10-15 minutes to achieve a surface roughness Ra ≤ 1.6 μm; a 0.1-0.3 mm thick layer of modified composite material is coated onto one surface and dried at 80-120°C for 1-2 hours; laser welding is employed, with the molten pool temperature monitored at 1800-2200°C during welding; immediately after welding, the welded parts are placed in a holding furnace at 200-300°C for slow cooling for 2-4 hours, and then cooled to room temperature at a rate of 5-10°C / min. This method effectively improves the strength, toughness, and crack resistance of the welded joint, reduces the heat-affected zone, and minimizes deformation.

The application discloses a kind of super-hydrophobic self-cleaning paint for mortar mixing barrel, coating and preparation method thereof.The paint includes, by mass fraction: epoxy resin 10-15 parts, epoxy modified silicone resin 5-15 parts, hydroxyl functionalized submicron alumina 15-20 parts, isocyanate functionalized nano-alumina 5-10 parts, dispersion medium 50-60 parts and auxiliary agent 0.5-2.5 parts.The application forms core-shell structure by two kinds of functionalized alumina chemical bonding, combines epoxy modified silicone resin, and constructs stable micro-nano composite rough surface.The coating prepared from the paint has static water contact angle of 165° or more, still maintains super-hydrophobic property after 50 times of sandpaper abrasion and 7 days of high temperature treatment at 180℃, and surface morphology is perfect after 50 days of simulated seawater immersion, solving the problem that existing coating is difficult to consider super-hydrophobic, wear-resistant, high-temperature resistant and corrosion-resistant property.

This invention provides a method for preparing Ti electrodes by plasma spraying Ce or Eu modified Ti4O7 powder, relating to the field of electrode preparation technology. The method includes the following steps: S1. Taking Ti4O7 powder, weighing the corresponding mass of CeCl3・6H2O or EuCl3・6H2O at a doping ratio of 1 at% to 3 at%, mixing it with the Ti4O7 powder, and then immersing it in ultrapure water; S2. sequentially polishing the Ti substrate with 400-mesh and 600-mesh sandpaper, and ultrasonically cleaning it with deionized water for 20-30 minutes; S3. Using a plasma spraying system, spraying the Ce / Eu-doped Ti4O7 powder obtained in S1 onto the surface of the pretreated Ti substrate obtained in S2. Electrodes prepared by rare earth doping and plasma spraying processes have significantly increased the number of active sites, greatly optimized ammonia nitrogen degradation efficiency, and achieved a tight bond between the coating and the substrate. This enhances the electrode's corrosion resistance and stability, and the preparation process is environmentally friendly, making it suitable for industrial ammonia nitrogen wastewater treatment needs.

The application discloses a kind of high-efficient durable water-resistant sandpaper suitable for humid environment and preparation method thereof, and high-efficient durable water-resistant sandpaper includes substrate layer, adhesive layer, abrasive layer;Adhesive layer is located in one side of substrate layer, and is formed by resin composition curing;Abrasive layer is formed by abrasive distribution, and one end of abrasive is embedded in adhesive layer;Abrasive surface has porous water-resistant interface layer formed by zinc imidazole ester frame;The porous water-resistant interface layer is obtained by forming zinc imidazole ester frame by the reaction of abrasive in zinc nitrate and 2-methyl imidazole methanol solution, whereby the sandpaper of the present application is through the synergistic effect of mechanical interlocking, chemical bonding, hydrophobic inhibition and stress buffering between abrasive and adhesive layer, solve the problem that abrasive and adhesive layer combination interface of sandpaper are softened by water, leading to non-normal shedding of abrasive, service life is reduced, and polishing effect is poor, so that the sandpaper of the present application has the polishing performance of adapting to humid environment, high efficiency and durability.

The utility model belongs to the technical field of abrasive paper disc cutting equipment, and particularly relates to a disc abrasive paper cutting machine which comprises a base, a frame is fixedly connected to the base, a rotating column is rotatably mounted on the frame, a fixing sleeve is fixedly connected to one end of the rotating column, an inserting rod is clamped in the fixing sleeve, an abrasive paper disc is fixedly connected to one end of the inserting rod, and the abrasive paper disc is fixedly connected to the other end of the inserting rod. Two clamping grooves are formed in the fixing sleeve, two grooves are formed in the inserting rod, springs are arranged in the two grooves, clamping blocks are fixed to the other ends of the springs, the other end of the fixing sleeve is sleeved with a first belt wheel, and the first belt wheel is arranged in the frame body; when the abrasive paper disc is used, the abrasive paper disc is convenient to replace by arranging the clamping mechanism, the time required for replacing the abrasive paper disc is remarkably shortened, the overall production efficiency is greatly improved, the cutting and sanding effects can be ensured by replacing the abraded abrasive paper disc in time, and therefore the product quality is improved.

1. The name of the design product: sandpaper automatic replacement device. 2. The use of the design product: used for the storage and automatic replacement of circular sandpaper sheets and square sandpaper sheets in the robot automatic polishing industry. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The present application relates to temperature heating and monitoring method in thermal load test, specifically relates to a kind of sample nondestructive temperature monitoring method for thermal load test, comprising the following steps: the deformation of sample in the set thermal compression operating mode is calculated, the size of open collar made of easy-to-weld material is confirmed accordingly, and open collar is made;After the side surface of sample is polished flat with sandpaper, flexible heat-conducting material is wrapped on the side surface of sample, forming "heat-conducting material-sample integrated structure";The open collar is installed on the side surface of "heat-conducting material-sample integrated structure";After welding thermocouple on the surface of open collar, the sample is installed in test loading equipment, and temperature measurement and control in subsequent test process can be carried out, the temperature of open collar and sample reaches equilibrium after insulation, and the temperature measured by thermocouple is the temperature of sample.The present application can guarantee the smooth development of thermal load test, and then obtain the high-temperature service performance of material, to provide basis for its design selection.

The present application relates to sandpaper surface modification treatment equipment technical field, specifically to a kind of multifunctional TPU sandpaper surface modification treatment equipment and its using method, including machine body and magnetron sputtering coating machine body, the magnetron sputtering coating machine body is fixedly installed on machine body, the upper surface of the machine body is fixedly connected with No. 1 mount, second mount, dust removal shell and drying box body, the thickness monitoring component is fixedly installed in No. 1 mount.The thickness monitoring component of the present application is set, the thickness of TPU sandpaper to be treated can be monitored in real time, the tension self-adapting component is set, the conveying tension of TPU sandpaper can be automatically adjusted, the data feedback component is set, the real-time feedback of sandpaper thickness can be realized, the dust removal air pressure self-adapting adjusting component is set, dust removal air pressure can be self-adaptively adjusted, the drying time length adjusting component is set, drying time length can be self-adaptively adjusted according to TPU sandpaper thickness data.

The invention discloses a method for improving the connection reliability of ultramicro fine lines, and belongs to the field of transformer design. The ultramicro fine wire connection refers to reliable connection between an enameled round copper wire and a polytetrafluoroethylene lead-out wire, wherein the enameled wire diameter of the enameled round copper wire ranges from 0.03 mm to 0.07 mm. The method comprises the following steps: removing a paint layer of the ultramicro fine line by sanding the line with abrasive paper; then connecting the ultramicro fine wire with the wrapping flexible wire; and finally, welding the wrapping flexible wire and the polytetrafluoroethylene leading-out wire which needs to be led out. The ultra-micro fine wire of the winding is firstly connected with the AFR250 polytetrafluoroethylene wrapping flexible wire of 0.012 mm < 2 >, then the wrapping flexible wire is connected with the external lead-out wire, a part of process details are supplemented, and the reliability of lead connection can be effectively improved.

The utility model relates to the technical field of abrasive paper production, in particular to a dust-free ceramic dry abrasive paper punching device convenient for blanking, which is reasonable in design and mainly comprises a pressure-bearing component and a punching component, and after a cutter of the punching component is butted with an annular cutting groove of the pressure-bearing component, the blanking is convenient. Round abrasive paper with connecting points can be formed on abrasive paper belt materials in a stamping mode, a stamping push rod in the pressure bearing assembly drives a punch to move upwards, the punch can form chip removal holes in the round abrasive paper in a stamping mode, and chip removal hole stamped pieces enter a waste piece collecting cavity along with the punch. A suction system composed of an exhaust fan, an outer pipe and an inner pipe can be used for rapidly sucking and removing chip removal hole punched sheets in a waste sheet collecting cavity, finally, round abrasive paper with chip removal holes can be moved away from a punching station along with traction of abrasive paper belt materials, and then the round abrasive paper and the abrasive paper belt materials can be rapidly separated only by applying pressure to the round abrasive paper through mechanisms such as a push rod and the like in the follow-up process.

This invention discloses a wide-width defect detection system and operating method for sandpaper preparation, relating to the technical field. The invention includes a base plate, with a mounting frame fixedly connected to the top center of the base plate. A marking mechanism is provided on the right side of the mounting frame, and an air blowing mechanism is provided on the mounting frame. The invention uses a first motor to drive a first lead screw, moving the moving frame to the lateral position of the defect. Subsequently, a second motor drives a second lead screw, precisely moving the first moving seat directly above the defect for secondary confirmation by a secondary camera. During this process, the first and second moving seats are rigidly connected via a connecting rod. Therefore, when the first moving seat is positioned directly above the defect, the second moving seat is naturally and synchronously positioned directly below the defect, without the need for additional coordinate conversion or secondary positioning. This rigid connection structure ensures that the position of the punch assembly and the center of the secondary camera's field of view always maintain a strict vertical correspondence, achieving the goal of marking exactly what is captured.

The application belongs to the technical field of drive axle housing processing, in particular to a polishing equipment and method for forklift drive axle housing processing, which comprises a support table group, the upper end of the support table of the support table group is provided with a sliding rail, the surface of the two sliding rails is slidably connected with a rotating mechanism, the upper end of the rotating mechanism is placed with a drive axle housing, the protruding part of the middle position of the drive axle housing is attached with a polishing mechanism, one side of the support table of the support table group is provided with a mechanical arm, and the end of the mechanical arm is clamped and connected with the upper end of the polishing mechanism. The polishing equipment is provided with the polishing mechanism, the circular cover is completely adapted to the protruding part of the drive axle housing, the mechanical arm drives the high-speed rotation of the circular cover, the relatively cheap sandpaper is used for polishing, the sandpaper is easy to be manufactured into a shape suitable for the circular cover, the spherical structure of the sandpaper reduces the polishing time of the protruding position in the middle of the drive axle housing without changing the polishing effect, improves the polishing efficiency, and is convenient for replacing the waste sandpaper.

1. The name of the design product: double-head sandpaper grinding machine. 2. The use of the design product: for polishing workpieces. 3. The design features of the design product: in shape. 4. The picture or photo that best indicates the design features: perspective view.

The utility model discloses a cutting machine for producing photovoltaic support accessories, which relates to the field of photovoltaic support production and comprises a workbench, a fixing plate is fixed at the top end of the workbench, a through groove is arranged on one side of the fixing plate, a groove is arranged on one side of the through groove, the fixing plate and the through groove are distributed in a perpendicular angle, the groove is parallel to the through groove, and the fixing plate is fixed on the workbench. A push plate is telescopically arranged on the side, close to the fixing plate, in the groove, the cut photovoltaic support can fall into the groove, the fallen photovoltaic support can be pushed in the direction away from the fixing plate by starting a first electric push rod, at the moment, the two ends of the photovoltaic support rub against the opposite sides of the two sand paper plates, and the photovoltaic support is cut off. According to the photovoltaic support cutting device, the cutting area of the photovoltaic support is polished, burrs or protrusions generated after cutting are removed, the influence on personnel is avoided, meanwhile, the two sanding boards can limit the moving photovoltaic support, linear movement is kept, deviation is avoided, and follow-up arrangement is facilitated.

The present application relates to the technical field of sandpaper recycling, and particularly relates to an environment-friendly cloth-based sandpaper recycling device and a use method thereof, which comprises a rack, a circulating flexible beater arranged on the rack, a circulating driving mechanism and a plurality of flexible beating heads, the circulating driving mechanism drives the plurality of flexible beating heads to move along the conveying direction of the waste cloth-based sandpaper at a linear speed equal to the conveying speed of the waste cloth-based sandpaper, and a conveying clamp roller group rotatably arranged on the rack and located upstream and downstream of the circulating flexible beater. The present application can drive the plurality of flexible beating heads to move at a linear speed equal to the conveying speed of the waste cloth-based sandpaper in the same direction, so as to impact the surface of the sandpaper perpendicularly at a high frequency, effectively shake off the abrasive particles and avoid damaging the cloth-based fibers. Meanwhile, the surface of the sandpaper can be cleaned by air blowing, the scraper body is self-cleaned, and the cleaning effect is improved.

This invention belongs to the field of grinding and machining technology, specifically relating to a highly redundant robotic explosion-proof grinding workstation. It includes a grinding platform, cylinders, a dust removal device, a grinding robotic arm, a grinding tool library, an automatic sandpaper changing device, and a workstation frame. The workstation frame serves as the mounting carrier. The grinding platform is driven by the cylinders for linear displacement, and the dust removal device removes debris generated during the grinding process. The grinding platform is used for loading and unloading the workpiece, and is equipped with a displacement mechanism to reposition the workpiece. The grinding tool library provides corresponding grinding tools. The automatic sandpaper changing device is installed in the area between two grinding platforms to automatically change the sandpaper. This invention enables rapid replacement of the grinding head; it can treat dust of different particle sizes separately, effectively improving the dust removal rate; and the highly redundant grinding clamping platform combined with the robotic arm ensures the accessibility of the surface to be processed.

This utility model discloses a combined steel pipe inner wall segmented grinding device, belonging to the field of steel pipe processing technology. The combined steel pipe inner wall segmented grinding device includes a support rod, on which a rotary motor and an insertion rod are mounted. The output end of the rotary motor is connected to the insertion rod. The insertion rod is equipped with a straight pipe grinding mechanism and a bent pipe grinding mechanism. The straight pipe grinding mechanism includes multiple first sandpapers and a first support block. The first sandpapers are mounted on the first support block and have a first grinding surface that mates with the inner wall of the straight pipe section in the steel pipe body. This utility model provides a combined steel pipe inner wall segmented grinding device where the support rod has two states: a straight pipe grinding state and a bent pipe grinding state. When the support rod is in the straight pipe grinding state, it can grind the straight pipe section of the steel pipe body and grind the inner wall of the bent pipe section, thereby realizing segmented grinding of the inner wall of the steel pipe body.

The invention relates to the field of seven-stringed plucked instrument designing and manufacturing techniques, in particular to a chopping technique for a seven-stringed plucked instrument embedded with a sound beam, which comprises the following steps: S1, narrow groove digging: presetting the size of a narrow groove, cutting red sandalwood into preliminary blank battens by using a sawing tool, and planing the blank battens by using a planing tool to enable the surfaces of the battens to be flat and smooth, respectively determining the positions of two narrow grooves in treble and bass areas of the groove belly of the guqin panel; and S2, sound beam finishing and polishing are conducted, specifically, the machined red sandalwood battens are further finished, whether the edges of the red sandalwood battens are neat or not is checked, abrasive paper is used for polishing the red sandalwood battens, and polishing is started from raw abrasive paper. According to the guqin, the treble and bass beams are additionally arranged, so that the panel of the guqin has the acoustic characteristics of different wood materials, the ideal treble and bass effect can be achieved, the coexistence of the drum sound and the golden stone sound required by the guqin is achieved, and the guqin is more stable and not prone to deformation due to the fact that the sound beams are additionally arranged.

The utility model discloses wear-resistant abrasive paper, belongs to the technical field of abrasive paper, and solves the problems that an operator feels obvious granular sensation in the holding process of the abrasive paper with lower mesh number, the pain is increased when the operator holds the abrasive paper with higher mesh number, and the palm of the operator is abraded by the abrasive paper if the operator holds the abrasive paper improperly. Comprising an abrasive paper layer and a reinforcing paper layer fixedly connected to the abrasive paper layer through mucilage glue, the edge of the bottom face of the reinforcing paper layer is fixedly connected with the edge of the top face of the abrasive paper layer, a cavity is formed between the reinforcing paper layer and the abrasive paper layer, a three-finger opening, a thumb opening and a little finger opening are formed in the reinforcing paper layer, and the thumb opening and the little finger opening are located on the two sides of the three-finger opening. When the abrasive paper is used, an operator can select modes according to holding habits, fingers can be inserted into the corresponding openings, the abrasive paper is sleeved on the palm, the reinforcing pieces prevent the openings from being torn, if the operator is used to hold, the holding part can be pinched to drive the abrasive paper to polish, and the abrasive paper is ensured not to be damaged during use.

The utility model discloses a device for conveniently replacing surface abrasive paper of a tire testing machine, which relates to the technical field of tire testing machines and comprises a frame, two axles rotatably connected to the lower end of the frame, wheels fixedly connected to two ends of each axle, a rotating shaft rotatably connected to the frame, and a roller fixedly connected to the outer end of the rotating shaft. A transmission mechanism used for driving the roller to rotate is arranged on the frame, a paving part used for paving abrasive paper and a spraying module used for preventing glue adhesion are arranged on the frame, and a fixing component used for fixing the abrasive paper is arranged on the roller; one end of the abrasive paper is fixed to the roller through the fixing component, when the abrasive paper is disassembled, the movable frame and the transmission mechanism drive the roller to rotate, the abrasive paper is wound around the roller, the viscosity of the abrasive paper is reduced through the spraying module, and residual glue is prevented from being left on the road surface. When the abrasive paper is pasted, the roller rotates reversely through the adjusting unit and is matched with the tiling component to paste the abrasive paper, one person can complete dismounting and mounting of the abrasive paper, and time and labor are saved.

The utility model provides an automatic cleaning needle cleaning device and a control system, the automatic cleaning needle cleaning device comprises a device main body, a first detection piece and a cleaning piece, the device main body comprises a working cavity and a working table, and the working table is installed in the working cavity and can reciprocate along a first direction; the first detection piece is installed in the working cavity to detect the position of the workbench. The cleaning piece is installed in the working cavity to clean the workbench. The position of the workbench is detected through the first detection piece, the workbench is automatically cleaned through the cleaning piece, the problem that in the prior art, residual foreign matter on needle cleaning abrasive paper may cause needle kneeling and card collision is effectively solved, and the needle cleaning device has the advantages that the needle cleaning efficiency is improved, the card collision risk is reduced, and the maintenance cost is reduced.

The application discloses a magnesium alloy zinc electroplating method and belongs to the technical field of magnesium alloy surface treatment. The method comprises the following steps: 1. substrate pretreatment: AZ31B magnesium alloy is polished by sandpaper and then is washed by anhydrous ethanol and dried; 2. alkali washing: the micro specific surface area of the substrate is increased, and the mechanical bite effect of the coating and the substrate is strengthened; 3. acid washing activation: a protective film is formed on the surface of the magnesium alloy, so that the alloy is not corroded in the electroplating solution; 4. pre-plating zinc: an initial zinc layer with uniformity, compactness and strong adhesion is rapidly established on the surface by adopting impact current; and 5. zinc electroplating: the magnesium alloy with the initial zinc layer is electroplated. The zinc coating of the magnesium alloy is uniform and compact and is silver-white. The process is synergistically controlled by pretreatment and impact current pre-plating, the coating is uniform and compact, is bright silver-white, is firmly combined with the substrate and is not easy to peel off, and the obtained zinc coating has excellent corrosion resistance and welding adaptability.