369results about "Blast guns" patented technology

The utility model relates to an intelligent cleaning device for a sand box, and belongs to the field of industrial automation and intelligent manufacturing. According to the scheme, the rail type RGV is adopted to automatically convey the sand box to the closed intelligent cleaning work station, and the information of the sand box is read through the RFID tag and synchronized to the information system. The cleaning robot scans the position of the sand box through the visual recognition device, and the tool changing robot grabs the adaptive drill bit from the drill bit tool library according to a system instruction and assembles the adaptive drill bit to the electric hammer chuck. And the cleaning robot drills and dredges the sand guide hole of the sand box, returns to the quick change frame to replace the electric pick, and performs multi-angle shoveling and scraping operation on the cavity of the sand box. And after cleaning is completed, the cleaning robot is switched to the sand blasting gun, and fine sand cleaning on the surface of the sand box is completed. The scheme aims at solving the problems that traditional manual cleaning is low in efficiency, severe in environment and large in potential safety hazard.

The invention discloses an abrasive water jet cleaning device and cleaning method.The abrasive water jet cleaning device comprises a cleaning box body, a spray head cleaning assembly and a conveying roller way, and the spray head cleaning assembly comprises a mounting frame, a mounting block and a spray head; the spray head cleaning assembly located on one surface of the steel plate / belt comprises a pair of installation frames, each installation frame is provided with a plurality of spray heads, the cleaning areas of the spray heads on the two installation frames cover the transverse width of the steel plate / belt after being combined, the spray heads on the two installation frames are obliquely arranged, and the spray heads on the two installation frames are arranged in a staggered mode. And the spraying directions of the sprayers face the two transverse sides of the steel plate / strip respectively. According to the cleaning device and the cleaning method, under the condition that optimal process parameters and spatial arrangement conditions of the spray head are met, extremely high part universality can be achieved, modular disassembly can be carried out, and the equipment site requirement can be reduced.

The invention relates to a dynamic lag compensation method for inclined hole machining of a base of a water jet cutting machine. The dynamic lag compensation method comprises the following steps that S1, machining parameters are obtained; s2, establishing a dynamic lag vector model; s3, based on the target axis vector of the inclined hole, establishing an asymmetric taper prediction model; s4, coupling the dynamic lag vector model and the asymmetric taper prediction model to generate a comprehensive compensation model; s5, real-time reverse compensation is conducted on a preset inclined hole cutting theoretical tool path; s6, the high-pressure abrasive water jet device is controlled to conduct inclined hole machining on the cutting machine base according to the execution path; and S7, in the cutting process, water jet pressure, abrasive flow and nozzle abrasion state parameters are built in real time. The method has the following advantages that accurate compensation of the dynamic hysteresis effect and effective suppression of the asymmetric taper are achieved, the hole axis and position precision is remarkably improved, and the high-quality hole wall shape is obtained.

The application provides a fir-type mortise and tenon joint structure deflection abrasive water jet strengthening method and system. The method uses a deflection abrasive water jet nozzle and a three-sided shielding strengthening tool to strengthen the surface of a workpiece. The system uses the above method. The application can solve the problems of "physical inaccessibility" (cannot enter) and "jet shadow" (cannot be sprayed / angle is not correct) of traditional strengthening tools in the extremely limited space of a fir-type mortise and tenon joint structure (deep groove, multiple teeth, reverse buckle), thereby realizing full coverage and uniform stress distribution of surface strengthening.

The utility model belongs to the field of sand blasting tools, and particularly relates to a notebook computer cover plate sand blasting tool which comprises a tank body, and a sand blasting assembly is fixedly installed on the inner wall of the tank body. The surface of the sand blasting assembly is provided with a plurality of nozzles used for blasting sand to the notebook computer cover plate. The top of the tank body is fixedly connected with a motor; the output end of the motor is fixedly connected with a main rod; the main rod and the tank body are arranged in a penetrating manner and are rotationally connected; a plurality of supporting rods are symmetrically and fixedly connected to the middle part of the main rod; a plurality of clamping mechanisms are arranged on each supporting rod; the clamping mechanism comprises a pair of fixing plates; clamping plates are symmetrically and rotationally connected between the pair of fixing plates; a spring is fixedly connected between the pair of clamping plates; through the cooperation of the motor and the clamping assembly, the cover plate can be in a rotating posture during sand blasting, the sand blasting assembly can conveniently conduct sand blasting on the two faces of the cover plate, and the operation that the cover plate needs to be turned over repeatedly during sand blasting is simplified.

The present invention provides a method for manufacturing a sealing device that can roughen the inner surface of the slinger, which is in sliding contact with the lip piece, over a wide area, and can also ensure uniform roughening of the slinger. [Solution] The slinger 20A comprises a first cylindrical portion 22 and a disc portion 21 which are responsible for fitting into one of the two members, and has a recessed space 24 opposite to the core material portion 30A, with the first cylindrical portion 22 and the disc portion 21 forming the outer frame. In the surface treatment step, the projection material 41 is projected onto the surface of the slinger 20A on the recessed space 24 side at different projection angles.

A method (300) of smoothing an inner surface of a tubular wall (232, 262, 264) of a workpiece (136, 224, 236, 260) is disclosed, including immersing (310) the workpiece in a mixture of a liquid and an abrasive and inserting (312) a cavitation peening nozzle (142, 212) into a cavity of the workpiece. The method further includes injecting (314) a cavitating jet from the cavitation peening nozzle into the cavity.

The utility model discloses surface treatment equipment for mold production, which belongs to the technical field of mold production and comprises a sand blasting machine body, a door frame is mounted on one side of the sand blasting machine body, and an observation window and a skylight are mounted on the side face and the top of the sand blasting machine body respectively. Supporting legs are fixedly connected to the lower portion of the sand blasting machine body, a discharging hopper is installed at the bottom of the sand blasting machine body, and a motor is installed in the discharging hopper. The four clamping assemblies are distributed above the machining disc in a surrounding mode, firstly, a to-be-machined mold is placed above the machining disc, at the moment, the adjusting buttons are sequentially screwed to drive the screw rods to rotate, the arc-shaped pads are attached to the surface of the mold, clamping and limiting of the mold are formed, then the position of a spray head of a sand blasting machine is aligned with the mold, and sand blasting is conducted; and dust and residual abrasive materials can be filtered through a filter frame and sieve holes, traditional manual sand blasting on the mold is replaced, the overall working efficiency is high, and operation is convenient.

The utility model provides a kind of nozzle (10) for cavitation surface treatment, the nozzle (10) for cavitation surface treatment has nozzle head (13), the nozzle head (13) has: first plane (13a), it sprays liquid, and with jet axis (1) vertical;Second plane (13b), it is vertical with jet axis (1), is the opposite side of first plane (13a);Nozzle hole (21), the nozzle hole (21) has: semicylindrical discharge groove (23), it is configured in first plane (13a), extends in the first direction with jet axis (1) vertical;Ejection hole (25), it extends along jet axis (1), and is connected with discharge groove (23), and for the straight elliptical cylinder with long diameter in the first direction extending ellipse-shaped section;Import portion (27), it has straight conical surface (27a) with jet axis (1) as central axis, and is connected to ejection hole (25).

A noise suppressed blasting system comprising: a source of blasting gas in a predetermined pressure range with abrasive particles entrained therein; a nozzle including a nozzle inlet for connection to the source of blasting gas, a nozzle outlet for emission of the blasting gas, a nozzle conduit from the nozzle inlet to the nozzle outlet including a throat therebetween with a ratio of area of the nozzle outlet to area of the throat selected to emit the blasting gas from the nozzle outlet to produce a supersonic jet; a silencer connectable to the nozzle, to receive the supersonic jet exiting the nozzle, the silencer comprising a body with a silencer conduit therethrough, the body being of sufficient length and diameter to cause a flow condition of the jet received from the nozzle outlet to be modified such that 11 / 2 shock cells are created in a jet inside the silencer, no shock cells are created in the jet outside the silencer and a jet exits the silencer in the form of a core jet with an established turbulent shear layer thereabout and entraining an annular jet located around the core jet.

The invention discloses an automatic polishing device and method for the inner surface of a rotary part with partition plates in an inner cavity, and belongs to the technical field of part machining. The inner surface automatic polishing device comprises a lathe bed, a turnover mechanism is arranged on one side of the lathe bed, a displacement mechanism is arranged on the other side of the lathe bed, a rotating table is arranged on the turnover mechanism, a clamp used for installing a rotating part is arranged on the rotating table, a polishing power head capable of being automatically unfolded is arranged on the displacement mechanism, and the polishing power head is connected with the lathe bed. The polishing power head capable of being automatically unfolded is connected with a particle abrasive drive and dust collection device; according to the automatic inner surface polishing device and method for the rotary part with the partition plates in the inner cavity, the polishing power head with the nozzle and the suction nozzle capable of automatically expanding and retracting extends into the inner cavity of the rotary part, automatic polishing machining and waste suction removal after polishing are conducted on the surface of the inner cavity, manual labor is reduced, and the production efficiency is improved. And the working efficiency of polishing work is improved, and the polishing quality and the consistency of batch production polishing are ensured.

This invention relates to long-distance sandblasting technology, specifically a sandblasting device comprising a frame, a sandblasting pipe winding and unwinding device, a sandblasting machine, and an air supply slip ring. The sandblasting pipe winding and unwinding device includes a winding disc, a winding disc drive component, and a winding disc guide component. The winding disc is mounted on the frame via the winding disc guide component. The sandblasting machine is mounted above the sandblasting pipe winding and unwinding device and rotates together with it. The sandblasting pipe is wound layer by layer onto the winding disc. The air supply slip ring supplies air to the sandblasting machine, and the power supply slip ring supplies power to the sandblasting machine. The sandblasting pipe winding and unwinding device and the sandblasting machine form a rotating whole. The sandblasting pipe is wound in the sandblasting pipe winding and unwinding device, which can provide a very long sandblasting pipe for long-distance sandblasting operations. The air source required by the sandblasting machine is supplied by the air supply slip ring. The sandblasting pipe does not pass through the slip ring or other unnecessary connecting links, which helps to improve reliability, extend the service life of the sandblasting device, and reduce the consumption of spare parts and the workload of equipment maintenance.

The utility model discloses shot blasting equipment for a corrosion-resistant chain piece, which relates to the field of chain piece production and comprises a shot blasting box, a shot blasting component and a moving plate are arranged in the shot blasting box, moving ports corresponding to the moving plate are arranged on the left side and the right side of the shot blasting box, and the left side and the right side of the moving plate are connected with sealing plates. And two placing openings are formed in the top of the moving plate, and placing plates are arranged in the placing openings. According to the chain piece shot blasting device, a chain piece needing shot blasting is placed on the two containing plates, shot blasting treatment is conducted on the chain piece on one containing plate, after shot blasting is finished, the first motor is used for driving the driving rod to rotate, the driving rod drives the driving gear to rotate, the driving gear drives the rack to move, the rack pulls the movable plate, and shot blasting is conducted on the chain piece on the movable plate. And the shot-blasted chain sheets are moved out of the shot-blasting box, the non-shot-blasted chain sheets are moved into the shot-blasting box, and the process is repeated, so that the shot-blasting treatment can be continuously performed on the chain sheets, and the shot-blasting efficiency of the chain sheets is improved.

The utility model relates to the technical field of handheld sand blasting machines, and discloses a handheld sand blasting machine, which comprises a working table, a sand grain container, a spray gun and a sand blasting box, a processing table is fixed at the bottom position in the sand blasting box, and a support plate is fixed at the bottom end of a suspension rod. The processing table is fixedly mounted at the bottom in the sand blasting box, the left side edge of the processing table is inclined, so that waste materials generated during sand blasting can be discharged from the discharge port, the water tank is mounted at the top of the sand blasting box, inlet water treatment is performed at the water inlet, and the process is filtered by the filter plate, so that the waste materials can be discharged from the sand blasting box. After a water pump is started to work, a water source in a water tank is pumped under the connection of a first drainage pipe, then the water source is drained into a water storage pipe after being drained through a second drainage pipe, the purpose of cleaning a workpiece is achieved through uniform spraying of a spraying head, and therefore the overall cleaning capacity is well improved in the working process.

The utility model discloses an aluminum profile sand blasting device convenient to adjust, and relates to the technical field of aluminum profile sand blasting. The sand blasting device comprises a rectangular frame, a lifting mechanism and a configuration mechanism are arranged on the rectangular frame, four sliding rods are fixedly connected to the bottom of the rectangular frame, sliding plates are connected to the outer walls of the four sliding rods in a sliding mode, sand blasting pipes are fixedly connected to the bottoms of the sliding plates, and a two-way screw is rotationally connected to the bottom of the rectangular frame. By arranging the lifting mechanism, when the sand blasting device is used, if the sand blasting distance of the sand blasting pipe needs to be adjusted, the manual turntable on the outer wall of the two-way screw rod can be rotated, the two-way screw rod can drive the two sliding blocks on the two-way screw rod to be close to each other, and when the two sliding blocks are close to each other, the two sliding blocks are matched with the connecting rods connected with the two sliding blocks; and the sliding plate connected to the other end of the connecting rod can slide downwards on the outer walls of the multiple sliding rods, and then the sand blasting pipe on the sliding plate is driven to move downwards, so that different sand blasting requirements of the aluminum profile are met.

The application discloses a sand blasting device for production and processing and a prewarning method thereof, and relates to the technical field of metal surface sand blasting treatment. The device comprises a circular rotating base, a square plate arranged above the base and a sand blasting nozzle. The sand blasting nozzle can move radially along the base, and the base is connected with a servo motor through a connecting shaft to realize accurate rotation. The prewarning method comprises the following steps: calculating the sand blasting height and matching the sand blasting diameter and the overlap threshold according to the input plate size parameters; if the single air pressure sand blasting requirement cannot be met and pressure boosting is needed, triggering the edge overpressure prewarning; and generating the adaptive sand blasting path after confirmation. The method divides the plate surface into a circular area, an arc segment area and a strip edge area, and adopts annular, swinging and edge moving sand blasting modes respectively, which significantly reduces the erosion of the rotating base caused by sand blasting, especially reduces the over-spraying risk of the edge area, and improves the service life of the equipment and the processing quality.

The utility model discloses a kind of dual-function tool bit structure of water cutting machine equipment, including mounting bracket, the two sides outer walls of mounting bracket are respectively equipped with replacement mechanism and cutting assembly, further include: lifting mechanism: install in the outer wall of one side of mounting bracket;The replacement mechanism includes fixed disc, fixed frame and drive assembly, the outer wall of one side of fixed frame is equipped with connecting frame, fixed seat is equipped on the connecting frame, the inside of fixed seat is equipped with second electric telescopic rod, the movable end of second electric telescopic rod is equipped with connecting plate, the bottom outer wall of connecting plate is equipped with push plate.The dual-function tool bit structure of water cutting machine equipment disclosed in the utility model has the effect of realizing the quick replacement and accurate positioning of new tool head body, completing the efficient cutting operation of different processing requirements, ensuring cutting accuracy and stability, and further improving overall processing efficiency and quality.

The automatic sand blasting machine comprises a sand blasting structure, the sand blasting structure comprises a rotating shaft, a top sand blasting mechanism and a side face sand blasting mechanism, the rotating shaft is rotationally connected into a sand blasting cabin, and the rotating shaft is controlled by a motor to rotate; the top sand blasting mechanism is fixedly connected to the rotating shaft, the top sand blasting mechanism comprises a first linear driving device and at least one top sand blasting gun, and the first linear driving device drives the top sand blasting gun to move in the horizontal direction; the side face sand blasting mechanism is fixedly connected to the rotating shaft, the side face sand blasting mechanism comprises a second linear driving device and at least one side sand blasting gun, and the second linear driving device drives the side sand blasting gun to move in the vertical direction; and sand blasting openings of the top sand blasting gun and the side sand blasting guns face the drill bit. According to the automatic sand blasting machine, the universality of the sand blasting machine is better, the sand blasting treatment efficiency is improved, and the cost is saved.

The invention relates to the technical field of semiconductor manufacturing equipment, and discloses a semiconductor equipment part surface sand blasting treatment device which comprises a processing bin, a sand blasting assembly is arranged at the top of an inner cavity of the processing bin, guide rails are fixedly connected to the two sides of the inner cavity of the processing bin, and inner cavities of the guide rails are movably connected with push-pull plates. According to the invention, a dual purification system of'storage barrel inlet filtration 'and'sand blasting head terminal filtration' is innovatively arranged, the grinding materials are primarily screened by the filter bin below the barrel cover when being added, and all the grinding materials must forcibly pass through the high-precision filter screen in the inner cavity of the sand blasting head before being jetted. The two-stage filtration effectively intercepts harmful impurities of all sizes, such as metal scraps and dust cakes, and ensures the purity of a spraying medium, so that a high-quality surface without scratches and pits can be obtained, the surface smoothness and the treatment consistency of semiconductor parts are remarkably improved, and a reliable foundation is laid for a subsequent precision manufacturing process.

The application discloses a spraying device and relates to the technical field of ship body manufacturing. The spraying device comprises a shell, a walking assembly, a spraying assembly, a first driving assembly and a second driving assembly. The walking assembly is arranged on the shell to drive the shell to walk on the surface of a ship body. The spraying assembly is movably arranged on the shell. The first driving assembly is arranged on the shell and is connected with the spraying assembly to drive the spraying assembly to move on the shell. The second driving assembly is arranged on the first driving assembly to drive the spraying assembly to rotate relative to the shell. The first driving assembly of the technical scheme provided by the application adjusts the position of the spraying assembly on the shell to change the spraying position of the spraying assembly, and then the spraying angle of the spraying assembly is adjusted through the second driving assembly, so that automatic spraying is realized, the harm to the body of workers is reduced, manpower is liberated, the surface treatment efficiency and treatment effect of the ship body are greatly improved, and labor is saved.

The utility model provides sand blasting equipment with a nozzle anti-blocking function, and belongs to the technical field of sand blasting. The sand blasting equipment with the nozzle anti-blocking function comprises a sand blasting structure and a cleaning structure, the sand blasting structure comprises a sand blasting machine, a metal hose, a connecting pipe and a spray head, the two ends of the metal hose are communicated with a discharging port of the sand blasting machine and the connecting pipe respectively, the spray head is communicated with the connecting pipe, and the cleaning structure is arranged on the sand blasting machine. And the cleaning structure comprises a driving assembly and two U-shaped scraping plates, the driving assembly is arranged in the connecting pipe, the two U-shaped scraping plates are connected with the driving assembly, the two U-shaped scraping plates are attached to the inner wall of the connecting pipe, and a feeding port of the sand blasting machine communicates with an external sand blasting tank. According to the sand blasting equipment with the nozzle anti-blocking function, sand on the inner wall of the connecting pipe can be conveniently cleaned, blocking is avoided, and meanwhile the sand blasting effect is improved.

The invention relates to the technical field of bearing finish machining equipment, and discloses bearing retainer finish machining equipment based on a water jet deburring collaborative structure, which comprises a machine table with a rack mounted at the upper end, a mounting plate arranged on the left side of the rack, a water jet part arranged on the mounting plate, and sliding rails symmetrically mounted at the front and back of the upper end of the machine table, a sliding bottom plate is slidably mounted on the front sliding rail and the rear sliding rail through electric sliding blocks, and a containing table is mounted at the upper end of the sliding bottom plate. The bearing retainer finish machining equipment based on the water jet deburring collaborative structure can effectively solve the problems that in the prior art, deburring and structure finishing processes of finish machining equipment are mostly designed in a separated mode, a retainer is likely to be collided in the transferring process, new damage is generated on the finished surface, and the service life of the retainer is prolonged. Or the subsequent finishing precision is influenced by the deviation of the positioning reference; the whole processing period is prolonged by the waiting time between the working procedures; and in addition, the problem that dead angle burrs are omitted due to the incomplete contact area of a traditional deburring tool is solved.

This invention provides a method for reducing undercut and overcutting in abrasive waterjet corner cutting. The method includes: spraying an abrasive waterjet onto a target material using a nozzle, maintaining the nozzle at a preset forward tilt angle, and feeding the nozzle along a first cutting direction relative to the target surface at a reference feed rate; adjusting the nozzle's orientation to be perpendicular to the target surface before it reaches the corner of the cutting trajectory, and pausing at the corner; after pausing, restoring the nozzle to its forward tilt angle, and feeding the nozzle along a second cutting direction relative to the target surface after the turn. By pausing the nozzle before the turn and employing a multi-stage, progressively increasing feed rate control strategy with a specific speed-length relationship after the turn, the method overcomes the problems of undercutting before the corner and overcutting after the corner, as well as poor cut geometry accuracy, caused by erosion energy attenuation and jet tailing effects.

The invention relates to the technical field of underground cutting equipment, in particular to a mining high-pressure water jet anchor cable cutting device. The mining high-pressure water jet anchor cable cutting device comprises a shell, a chuck assembly, a water jet assembly and a buffer assembly, the chuck assembly is arranged at an inlet of the shell, the chuck assembly is provided with a clamping channel so as to clamp or release an anchor cable, a containing cavity is formed in the shell, one end of the containing cavity communicates with the clamping channel so that the anchor cable can stretch into the containing cavity, and the buffer assembly is arranged in the containing cavity. The water jet assembly is connected with the shell and extends into the containing cavity, the buffering assembly is arranged at the end, away from the chuck assembly, of the containing cavity, the output end of the water jet assembly faces the buffering assembly, the buffering assembly comprises a buffering cover, and the radial size of the buffering cover is gradually increased in the direction away from the chuck assembly. And the inner wall surface of the buffer cover is provided with a plurality of buffer runners which are spirally arranged in the axial direction of the shell.

The invention relates to the technical field of production, in particular to a motorcycle brake pump body production line which comprises a blank warehouse, a sand blasting machine, a numerical control machining center, a water tank and a flat plate conveyor which are sequentially mounted on the ground, an AGV is movably connected between the blank warehouse and the flat plate conveyor, and a warehouse body is fixedly connected to the upper surface of the AGV; a mounting cover is rotatably connected to the upper surface of the bin body, a connecting seat is fixedly connected to the outer surface of the mounting cover, a robot rotating joint is connected to the outer surface of the connecting seat in an embedded mode, and a mounting seat is fixedly connected to the output end of the robot rotating joint. According to the pump body machining device, the placement plate located on the integrated bridge can be moved to the leftmost end of the feeding mechanism, the placement plate located at the right end of the feeding mechanism can be moved to the integrated bridge, replacement of pump body blanks before and after machining is achieved, by adjusting the state of the plate face supporting mechanism, the clamping jaw is suitable for different working procedures, the clamping frequency of the clamping jaw is reduced, and the machining efficiency is improved. The production line efficiency is improved.

This invention discloses a sandblasting roughening treatment device for radiator surfaces, belonging to the technical field of sandblasting treatment devices. The sandblasting roughening treatment device includes a support mechanism with a sandblasting mechanism mounted on it. One end of the sandblasting mechanism has a flow guiding component. The sandblasting mechanism includes a nozzle, a mixing pipe, and a sand conveying pipe. The nozzle and the mixing pipe are connected, and the sand conveying pipe is inserted into the mixing pipe, also connected. The flow guiding component includes a connecting frame, an elastic sheet, and a pin. The connecting frame has a pin, one end of which passes through the end of the connecting frame. One side of the elastic sheet is fitted around the outer ring of the pin, and the other side of the elastic sheet hangs down along the sandblasting direction. This invention, by setting an elastic sheet, allows the high-speed sandblasting jet to adhere and flow along the surface of the elastic sheet. The high-speed sandblasting jet changes the energy distribution structure of the jet stream after passing through the elastic sheet, transforming the concentrated jet into flexible and uniform abrasive aggregates. The abrasive impact energy received by all surfaces of the workpiece is basically the same, resulting in small roughness differences.

The utility model relates to the technical field of sand blasting machines, in particular to a sand blasting machine convenient for adjusting a sand blasting angle, which comprises a shell, a fixing component and an adjusting component are arranged in the shell, a sand blaster is arranged in the adjusting component, and the sand blaster is positioned at the top of the fixing component; the adjusting assembly comprises a fixing ring, three supporting cylinders, a driving lead screw, a ball head and a movable seat, the fixing ring is located in the shell, the sand blaster is fixedly installed on the inner wall of the fixing ring, the supporting cylinders are fixedly installed on the top of the inner wall of the shell, the driving lead screw is slidably installed in the supporting cylinders, and the ball head is fixedly installed on the inner wall of the shell. The ball head is fixedly connected to the bottom of the driving lead screw and located at the bottom of the supporting cylinder. The utility model solves the problems that the existing sand blasting machine does not have an angle adjusting function, so that potential safety hazards exist when a workpiece is manually held for sand blasting, and the processing quality and efficiency are influenced.

The utility model relates to the technical field of glass processing equipment, in particular to a sand blasting device for glass surface treatment, which comprises a working table, a conveying assembly arranged on the working table, a sand blasting chamber arranged above the conveying assembly, a sand blasting assembly arranged in the sand blasting chamber, a pressing assembly arranged above the conveying assembly, and a sand blasting assembly arranged above the sand blasting chamber, the pressing assemblies are arranged on the front side and the rear side of the sand blasting assembly correspondingly and can move up and down relative to the conveying assembly. And the cleaning assembly is arranged above the conveying assembly, located between the sand blasting assembly and the rear pressing assembly and used for cleaning sand on the surface of the glass. The pressing assembly can effectively press the glass, prevents the glass from shifting or shaking in the conveying and sand blasting processes, and can adapt to the glass with different thicknesses; and the cleaning assembly is arranged between the sand blasting assembly and the rear pressing assembly, sand on the surface of the glass can be cleaned in time after sand blasting, the situation that the surface of the glass is damaged by sand residues is avoided, and the sand blasting quality is guaranteed.

The utility model provides a deburring device. The deburring device comprises a carrier; the at least two spraying units can be arranged on the carrier at the same time, and the spraying units are constructed to be suitable for spraying jet flow used for deburring; wherein the deburring device is configured such that, in a state in which the at least two injection units are simultaneously provided on the carrier, one of the at least two injection units can protrude from the carrier beyond the remaining injection units in an axis direction along a longitudinal axis of the injection unit to perform deburring. The utility model further relates to corresponding production equipment for manufacturing the fuel cell shell. The deburring device has the beneficial effects that accurate deburring can be conveniently conducted through the proper spraying unit.

The invention provides a handpiece (1) for treating teeth by means of a jet of abrasive powder mixed with air. The handpiece (1) is an elongated member extending along a handpiece axis (C). The handpiece (1) comprises a tubular connector (10) extending along the handpiece axis (C). The connector (10) is configured to be connected to a supply system (3) at a first axial side of the connector (10). Furthermore, the connector (10) has at least two ports at a second axial side of the connector (10), a first port (12) configured to be connected to a first supply line (11) of a nozzle device (2) and a second port (22) configured to be connected to a second supply line (21) of the nozzle device (2). The first port (12) and the second port (22) are arranged offset from each other along the handpiece axis (C). In addition, the connector (10) is a one-piece element, preferably a monolithic element, and made of metal.