80 results about "Molding sand" patented technology

This utility model relates to the field of sand filter cleaning technology and provides a V-type sand filter ultrasonic rotary spray device, comprising: a sand filter body; an ultrasonic generator installed on the outer wall of the other side of the sand filter body; ultrasonic transducers uniformly fixedly installed on the inner wall above the filter media tank; a spray mechanism movably installed at the top of the fixed pipe and branch pipe; and a protective filter screen uniformly installed at the top of the spray mechanism. The V-type sand filter ultrasonic rotary spray device provided by this solution utilizes the operation of the ultrasonic generator to cause multiple ultrasonic transducers on the upper layer of the filter media in the filter media tank to generate ultrasonic vibrations, performing ultrasonic cleaning on the upper layer of filter media. This is combined with the main nozzle and inclined nozzle rotating to spray and rinse, and then with the operation of a second water pump to draw water into the water supply pipe. The water flowing through the water supply pipe enters multiple connecting pipes and is then sprayed out through multiple flushing heads to rinse and remove contaminants, achieving efficient rinsing of the filter media above the filter media tank.

This utility model relates to the field of lost foam casting technology and discloses a lost foam casting device for automotive drive axle housings. It includes a base, a frame mounted above the base, a casting box fixedly connected to the inner wall of the frame, a sand outlet on the lower surface of the casting box, a recovery assembly below the sand outlet, and a filter assembly outside the base. The recovery assembly includes a baffle, a collection box, and a sieve plate. A first hinge seat is fixedly connected to the outer wall of the frame, and a second hinge seat is fixedly connected to the outer wall of the baffle. A hydraulic rod is rotatably connected to the inner wall of the first hinge seat, and the output end of the hydraulic rod is rotatably connected to the inner wall of the second hinge seat. In this utility model, after casting is completed, the baffle is opened and closed automatically via a hydraulic drive device, achieving automatic opening and closing of the sand outlet. The molding sand falls into the collection box through the sieve plate for initial screening. Coarse sand is directly recycled, while fine sand is separated through the sieve plate, improving the efficiency of old sand recycling and reducing labor intensity.

This utility model discloses a casting mold with anti-sand-fall-off process design, belonging to the field of casting molds. It includes a casting table, on which a lower template and an upper template are provided. The lower template is provided in two sets, and the two sets of lower templates are combined to form a mold cavity. The size of the mold cavity is adapted to the upper template. A plug-in plate is provided below the lower template, and the plug-in plate is provided on an adjustment seat. The adjustment seat is connected to a two-way screw. By designing the two sets of lower templates to be separable left and right, in the mold opening and part removal process, the two sets of lower templates can be separated horizontally, replacing the traditional integral template and the overall pulling and separation method of the casting and molding sand. During the separation process, the concentrated pulling force of the mold inner wall on the molding sand is dispersed into the lateral separation force of the two sets of templates, effectively avoiding the breakage of the molding sand and the mold cavity interface in stress concentration areas such as the corners of the casting, and reducing sand drop from the key stage of mold opening where sand falls off frequently.

The application relates to the technical field of sand recycling devices, and particularly provides a sand recycling device for V-process casting, which comprises a supporting table, a baffle, a material receiving unit, a cooling unit and a baffle plate. The baffle is arranged above the supporting table through a connecting plate. The material receiving unit comprises a first telescopic cylinder, a second telescopic cylinder, a screen, a supporting frame, a blocking frame and a brush. The first telescopic cylinder and the second telescopic cylinder are fixed to one side of the supporting table. The output shaft of the first telescopic cylinder is fixed to one side of the screen. The output shaft of the second telescopic cylinder is fixed with the supporting frame. The bottom of the blocking frame is fixed with the brush. The baffle plate is fixed in the supporting table. The cooling pipe is fixed below the baffle plate. The blocking frame is arranged to separate the casting and the sand. The second telescopic cylinder can drive the blocking frame to move, and then drive the brush to move. The screen is displaced under the drive of the first telescopic cylinder, and the sand falls under the cooperation of the screen and the brush. The sand is cooled by the baffle, and the cooling speed is high.

This invention provides a sand molding device for stainless steel casting production, relating to the field of sand molding technology. It includes a device base, a lower molding box above the base, an ejector mechanism (a retractable sleeve structure) above the base, a vibration generator above the base, a sand mold above the base, and two release agent spraying devices above the base, located on the upper and lower sides of the sand mold respectively. In this invention, the lower molding box, ejector mechanism (a retractable sleeve structure with internal springs), vibration generator (capable of generating vibrations via ultrasound), sand mold, and two release agent spraying devices located on the upper and lower sides of the sand mold, each with a set of spray nozzles arranged in a straight line, allow for efficient operation during the sand molding process.

This invention relates to a molding sand reuse system for V-process casting, comprising a conveyor belt, above which, from top to bottom, are arranged a feeding hopper, a dispersing mechanism for breaking down and uniformly distributing the molding sand, and an electromagnetic adsorption mechanism for adsorbing iron filings within the molding sand. An adsorption assembly is movably connected to the inner cavity of the processing chamber. This invention relates to the field of molding sand reuse technology. This V-process molding sand reuse system, through the alternating left-right movement of three sets of electromagnetic adsorption plates and the coordination of lifting plates, can continuously adsorb iron filings from the molding sand while automatically separating them with good screening effect. It ensures large-scale separation while minimizing iron filings residue, eliminating the need for additional manual cleaning, simplifying maintenance, and thus significantly reducing iron filings residue in the molding sand, increasing the viscosity of the molding sand during the molding process, and reducing the difficulty of molding.

This invention relates to a continuous cleaning device for molding sand, specifically for cleaning and refurbishing. The device comprises multiple parallel rollers for agitating and cleaning the molding sand. Each roller has a material inlet and outlet at each end. All rollers are inclined so that the material inlet of each roller is higher than its outlet. Adjacent rollers are staggered so that the material inlet of the next roller is lower than the material outlet of the previous roller. Each roller has a permeable conveying ramp at its tail end. The upper end of the ramp corresponds to the water outlet of the corresponding roller, and the lower end extends above the material inlet of the adjacent roller. This continuous cleaning device, through its ingenious layout design, can automatically and continuously complete different cleaning tasks for molding sand.

This invention discloses a casting apparatus and casting process for lead-free brass water meter housings, relating to the field of brass casting technology. It includes a main body, a fixing unit, a pretreatment unit, a pneumatic unit, and a control unit. The fixing unit clamps the water meter housing; the control unit monitors the casting temperature in real time via a temperature sensor. When the water meter housing is in the hot brittle range above 300°C, the air supply unit only outputs airflow for gentle cooling to prevent deformation and cracking of the casting. When the temperature drops to 200°C from 300°C, the air supply unit outputs high-pressure airflow to drive a vibrating unit, using high-frequency self-excited oscillation to break down and peel off the internal molding sand. When the temperature drops below 200°C, the air supply unit outputs pulsed airflow to drive a striking unit, reciprocatingly striking the outer wall of the water meter housing to remove residual molding sand. Finally, the extraction unit uses negative pressure to extract and separate the molding sand. This invention solves the problem of easy damage or difficult sand removal of lead-free brass water meter housings at different cooling stages, achieving efficient and non-destructive sand removal.

This invention relates to the field of sand core forming, and more particularly to a method for manufacturing an ultrathin annular air duct core. Addressing the problems of poor core bone positioning accuracy in existing technologies, which easily leads to core bone leakage during sand filling and thus scrapping of handmade cores, this invention provides a method for manufacturing an ultrathin annular air duct core. This method is simple to operate, facilitates core bone forming, and achieves relatively accurate dimensions, making it suitable for forming small-sized handmade cores with small sand volumes. The mesh-like core bone dimensions provide sufficient support strength for thin-surface sand cores; the core bone positioning is accurate, preventing core bone misalignment; the core bone is welded using a 3D-printed sand mold, resulting in precise core bone dimensions, suitable for handmade core production with very small sand volumes and where core bone drawings are inconvenient to annotate.

This invention relates to the field of casting technology and discloses a casting process for the steel backing of train brake pads, which includes steps such as mold design, sand mold making, melting, spheroidizing, pouring, and cooling. This invention solves the problems of substandard metallographic structure and insufficient cold-stamping strength at -20 to -40 degrees Celsius in existing casting processes. It also addresses the quality issues of porosity, tensile strength, bending strength, and cold-stamping strength in the core area of ​​the middle section of the steel backing, ensuring high-strength performance of the steel backing. By optimizing the mold structure, utilizing precise matching of the counter-pressure plate and positive pressure plate, positioning and venting structure design, and sand mold / sand core technology, it effectively reduces defects such as sand holes, porosity, shrinkage cavities, sand adhesion, cracking, and dimensional deviations in the castings, ensuring dimensional accuracy, surface quality, and internal density, and improving the product qualification rate.

This invention relates to the technical field of molding sand casting, and in particular to a molding sand casting production line, comprising a transport track, a sand mixer mounted on one side of the transport track, a transport platform slidingly mounted on the transport track, a mold mounted on the transport platform, a sand box mounted on the mold, a machine housing mounted on one side of the transport track, a first stop and a second stop slidingly mounted inside the machine housing, a first leveling block mounted on the side of the first stop facing the second stop, and a second leveling block mounted on the side of the second stop facing the first stop, and a sliding drive assembly for driving the first and second stops to slide toward or away from the transport track, and a sand collection box mounted on one side of the transport track, with a pipe equipped with an air pump mounted on the sand collection box, one end of the pipe connected to the sand mixer. This application has the effect of leveling the molding sand on the surface of each sand box using the first and second leveling blocks, thereby reducing the workload of workers.

The utility model relates to the technical field of rain shower sand adding device, and disclose a foundry production with mould sand rain shower device, include: support, the top of support is provided with the top plate, and the both sides of top plate bottom are provided with support guide rail, and the bottom of support guide rail is provided with base, and base connects support and support guide rail, and the central fixed setting of top plate bottom is provided with cylinder no.

This utility model relates to a molding sand shaping machine, including a frame, shaping wheels, a driver, and shaping chains. Several shaping wheels are rotatably mounted on the frame, distributed directly above the sand feeding belt along its conveying direction. The lower end of each shaping wheel moves in the opposite direction to the feeding direction of the sand feeding belt. The shaping wheels are used to break up clumps of sand on the sand feeding belt. The driver is mounted on the frame and drives the shaping wheels to rotate. Several shaping chains are included, with their upper ends connected to the frame and their lower ends naturally hanging down onto the sand feeding belt. These chains are used to break up clumps of sand on the sand feeding belt. This machine improves the efficiency and degree of breaking up clumps of sand on the feeding belt. It has a simple structure, stable performance, low failure rate, and can significantly change the properties of the molding sand, increasing its compaction rate and yield, and greatly improving the dimensional consistency of the castings.

The utility model relates to the field of lost foam casting, disclose a kind of can quickly separate lost foam casting, including bottom box, the outer wall left end of bottom box is fixedly connected with motor, the drive end of motor is penetrated the inner wall of bottom box and is fixedly connected with rotating column, the outer wall of rotating column is fixedly connected with outer disc, the outer wall of outer disc is fixedly connected with bottom bar, the outer wall of bottom bar is provided with vibration subassembly, and bottom bar is connected with top plate by vibration subassembly, the inner wall top end of bottom box is fixedly connected with sand box, the front end left and right sides of sand box are fixedly connected with hinge, the top end of hinge is rotatably connected with sand box, and the top end of sand box is used to close sand box. In the utility model, high-frequency vibration is applied to the box by vibration subassembly, the flowability and compactness of the sand are improved, the generation of filling dead angle and loose area is reduced, thereby effectively avoiding the casting surface defects caused by insufficient sand support.

This utility model discloses a casting sand separation device, relating to the field of sand casting technology, including a collection box; the top of the collection box is equipped with a tilt adjustment component, and a secondary box is set on one side of the collection box; a dust suction component is set on the top of the tilt adjustment component and the secondary box; this utility model, by setting a dust suction component on the top of the tilt adjustment component and the secondary box, allows dust to enter the air chamber through air holes according to the principle of air pressure difference. Under the continuous push of the negative pressure airflow, the dust entering the air chamber will converge along the internal channel of the air chamber towards the connecting pipe, which can ensure that the dust suction force is uniform in all positions within the dust cover area, effectively limit the diffusion range of dust, confine the dust inside the dust cover, improve the dust capture efficiency of the air holes, and at the same time, the equidistant design of the air holes ensures the uniform distribution of adsorption force, avoiding the accidental suction of molding sand particles due to excessive local suction force, or the dust residue due to insufficient local suction force.

This utility model relates to the field of gear casting technology, specifically a gear casting device, including a pre-mold mechanism and a pitch adjustment mechanism mounted on the pre-mold mechanism. The pre-mold mechanism includes a casting base, a sand-filling cover mounted on top of the casting base, and multiple evenly distributed transverse grooves on the top of the casting base. A bottom tray plate is movably mounted in the transverse grooves, and a threaded tube is movably mounted on the bottom of the casting base. By installing the pre-mold mechanism on the worktable and the pitch adjustment mechanism within it, when producing large gears of different models, the mold of the gear teeth can be pre-adjusted without changing the casting center or the mold level. Once the pitch adjustment mechanism is selected and adjusted, molding sand can be filled into the changed mold cavity, thereby effectively improving the efficiency of large gear casting.

Provided is a mold molding apparatus and a mold molding method that reduce waste of strokes for extrusion, improve efficiency of a carrier plate replacement operation, and assist in auxiliary operations. The mold molding apparatus includes: a carrier plate replacement device of a turret type; a sand box carrying-in / out device that carries in a sand box to a molding space formation position provided in the carrier plate replacement device and carries out the molded sand box; a sand box carrier plate superposition device that superposes each carrier plate with the carried-in sand box to form a molding space; a molding sand filling device that fills the molding space with molding sand; a molding station that is provided adjacent to the molding space formation position and includes a molding sand pressing device that molds a mold by pressing the molding sand; and a sand box carrier plate moving device that moves the carrier plate and the sand box in a superposed state from the molding space formation position to the molding station.

The present application relates to the technical field of metal casting, and particularly discloses a core making machine, which is provided with at least two regulating systems in the circumferential direction of the side wall of a core box. During sand shooting, the exhaust adjusting branch of the regulating system controls the exhaust amount during sand shooting to avoid excessive pressure drop loss, and the negative pressure adjusting branch adjusts the vacuum degree in the cavity to increase the pressure difference between the region and other regions, improve the flowability of the sand, and facilitate compacting of the sand, thereby achieving good core making effect. During solidification and blowing, the blowing mechanism can blow triethylamine gas into the cavity through the top and side of the core box, achieve the best solidification and air intake combination, increase the air intake area, shorten the solidification time, improve the solidification efficiency, and increase the opening of the exhaust adjusting branch to increase the exhaust amount of the corresponding region and ensure smooth air intake. The present application also provides a sand shooting and solidification process control method applied to the core making machine.

This application relates to the technical field of molding sand pretreatment, specifically disclosing a dehumidification and drying device and process for sand mold 3D printing. The device includes a feeding assembly, a first stirring assembly, and a second stirring assembly. The feeding assembly includes a feeding funnel for receiving and guiding sand. The first stirring assembly includes a stirring hopper and a first heating element, the stirring hopper being connected to the feeding funnel and used to stir the sand. The first heating element heats the stirring hopper to heat the sand within it. The second stirring assembly includes a stirring funnel and a second heating element. The stirring funnel receives and stirs the sand output from the stirring hopper, and the second heating element heats the sand within it. The stirring funnel is open. This application effectively improves the problem of poor fluidity caused by high moisture content in existing sand materials.

This utility model relates to the technical field of tunnel construction equipment, specifically to an anti-clogging sand silo device for producing synchronous grouting fluid for subways. It includes a silo body, an inverted conical discharge cone, a vibration arch-breaking mechanism, a central flow-guiding anti-clogging cone, and a pneumatic flow-aiding device. The central flow-guiding cone forces the material to flow evenly and disperse towards the cone wall. Combined with the targeted vibration of the vibration arch-breaking mechanism in easily clogged areas and the optional pneumatic flow-aiding device, these multiple measures work synergistically to efficiently solve the problems of sand bridging, caking, and clogging of the discharge port, significantly reducing the frequency of silo cleaning. This utility model overcomes the problems often encountered in existing technologies when storing fine sand or silt with slightly higher moisture content. These problems include sand easily forming arched structures or only forming a channel for discharge in the center of the silo, especially in the conical part, leading to poor or even interrupted discharge; and sand compaction and caking near the bottom outlet of the silo due to pressure, humidity, or material characteristics, clogging the discharge port.

The application discloses a kind of casting equipment related to the technical field of casting equipment, including body, with the sliding connection of body drive frame, with the sliding connection of drive frame pressure head and cavity, the pressure head four corners are provided with pressure compensation component, the pressure compensation component includes: edge angle pressure block, with the elastic sliding connection of pressure head.The application, with the way of edge angle pressure block and pressure head synchronous down pressure in front half compaction stroke, make the middle and edge angle of sand uniform stress, avoid edge angle sand lock because of early compression, ensure that sand always has good slip and filling space in compaction process, and solve the density inversion problem of traditional pre-pressing scheme that edge angle is too hard and middle is loose;In the second half compaction stroke, make edge angle pressure block gradually extend with pressure head down, and reach compaction limit with pressure head synchronously, realize progressive, no impact edge angle pressure compensation.

The utility model discloses a sand box transmission device of limit vibration, including support frame, set up conveying mechanism on support frame, set up and located conveying mechanism one side's limiting mechanism on support frame, set up and located conveying mechanism below's lifting assembly on support frame, set up vibration subassembly on lifting assembly and set up and located conveying mechanism other side's sand outlet subassembly on support frame, the limiting mechanism includes two limiting assemblies, and each limiting assembly all includes the linear motor of fixedly arranged on support frame, and the output of linear motor is equipped with the limiting rod that stretches out vertically upwards. The utility model sets up transmission mechanism and carries vibration subassembly's lifting assembly, and the sand in sand box is handled in the transportation process, and the sand in sand box is handled in the transportation process, and also, set up limiting assembly and prevent sand box vibration deviation, in addition, set up sand outlet subassembly, and the sand of transfer fallen sand is collected, and production efficiency is improved, and production cost is reduced.

The utility model relates to ferrous metal casting technical field, concretely is a molding sand scraping device of molding machine, including machine body, mounting bracket, the mounting bracket sets up one side of machine body, electric push rod, electric push rod sets up one side of mounting bracket, transverse plate, transverse plate key connection is in the output of electric push rod, main scraper, main scraper sets up one side of transverse plate, and main scraper is mainly sanding board, adjusting assembly, adjusting assembly includes two groups of movable plate and two groups of auxiliary scraper. The molding sand scraping device of molding machine, through setting movable auxiliary scraper, and then when responding to multiple mould boxes, moves auxiliary scraper to increase the sanding distance of the device, makes the cooperation of main scraper and auxiliary scraper can respond to multiple mould boxes, increases the use range of the device, guarantees the consistency of sanding intensity and effect simultaneously, avoids the condition that sand mould is damaged due to sanding excessive of partial mould box, improves production efficiency.

This utility model discloses a V-type sand filter air-water backwash distributor, belonging to the field of V-type sand filters. The side wall of the V-type sand filter body is equipped with multiple water and air pipes. Each water and air pipe forms a set of air-water backwash components and corresponds to a set of filter plates. Each water or air pipe has a flow monitoring pipe connected to its outer end, and a control valve is installed at the outer end of the flow monitoring pipe to control the opening and closing of the air and water supply. The equipment employs flange connections and sealing ring designs in multiple places to ensure reliable connections and good sealing. The inlet water pipe and liquid inlet valve allow for alternating use during equipment maintenance, improving flexibility. During maintenance, disassembling the inlet and outlet pipes, flow monitoring pipes, and control valves allows for inspection and cleaning of the water and air pipes, and facilitates easy cleaning or replacement of the filter plates, ensuring continuous and stable operation of the equipment. The equidistant distribution of the air-water backwash components and filter plates ensures a uniform and efficient filtration system.

The present application relates to the technical field of additive manufacturing, and proposes a multi-material powder bed additive manufacturing porous negative pressure sand laying and recycling integrated method, which comprises a forming platform, a rack, a motor, a lifting screw, a guide rail, a sand laying box, a cross beam, a vacuum cylinder, a pipeline, a screening device and a negative pressure adsorption device. The device and method use the negative pressure adsorption device to adsorb and recycle the multi-material sand laid in the forming platform, so that the sand laying surface meets the requirements of flatness and certain thickness, and the recycled mixed sand is separated through the vibration screen of the screening device, and the sand in the screen is classified and put into the sand laying box through the control of the air cylinder, thereby solving the problem of uneven sand laying surface caused by easy wear and sand sticking of the sand scraping plate, and realizing the real-time recycling and classified reuse integration of multi-material sand.

This utility model discloses a mixing device for easy discharge of molding sand powder, relating to the field of molding sand powder processing technology. The mixing device includes a tank, auger blades, and a linkage lifting structure. A cylindrical body is fixedly installed at the bottom of the tank, a circular groove is fixedly installed on the right side of the tank, and a shell is fixedly installed at the top of the tank. A vertical rod is rotatably installed on the inner wall of the cylindrical body, extending into the interior of the tank. A mixing arm is fixedly installed on the outer wall of the vertical rod. Two sets of auger blades are disposed inside the cylindrical body, arranged left and right. The linkage lifting structure is disposed on the cylindrical body, vertical rod, shell, and circular groove. This mixing device for easy discharge of molding sand powder ensures that the molding sand powder at the bottom is fully mixed, improving the quality and efficiency of mixing. It also accelerates the discharge of molding sand powder, preventing blockages during the discharge process and enhancing the practicality of the device.

This utility model provides a sand mixing device for a sand mixer, including a cylinder, a mixing shaft, and mixing blades. The mixing shaft is located inside the cylinder and rotatably connected to it. Multiple mixing blades are evenly arranged along the outer circumference of the mixing shaft. The inner ends of the mixing blades are detachably connected to the mixing shaft and mounted on it. The outer ends of the mixing blades are equipped with scrapers, which are inclined and fit against the inner wall and bottom surface of the cylinder. The mixing blades of this utility model have a split, detachable structure, facilitating later maintenance and reducing manufacturing costs. Furthermore, the multiple mixing blades working in conjunction with the scrapers improve sand mixing, resulting in more efficient sand turbulence, uniform mixing, good mixing effect, and stable and reliable quality of the mixed molding sand.

This utility model belongs to the field of sand mixing technology for casting processing, specifically a sand mixing device for casting processing. It includes a support frame, within which a mixing box is fixedly connected. The mixing box contains a crushing mechanism and a mixing mechanism. The crushing mechanism includes two crushing rollers, which are mounted in the mixing box via rotating shafts. A first gear and a second gear are respectively fitted onto one end of each shaft, and the first and second gears mesh with each other. A first motor is mounted on one side wall of the mixing box away from the first gear, and the output end of the first motor is connected to one end of one of the rotating shafts. A protective cover is mounted on the other side wall of the mixing box. This utility model employs a method of crushing first and then mixing, which allows the sand and gravel raw materials to be evenly distributed with other raw materials, forming stable molding sand, thus helping to improve the dimensional accuracy and processing quality of castings.

This invention relates to the field of casting equipment technology, specifically disclosing a vibratory compaction mechanism and an intelligent casting island for ductile iron casting. The mechanism includes a base, a support frame fixedly mounted on the top of the base, a top frame fixedly mounted on the top of the support frame, a vibration mechanism fixedly mounted in the middle of the top of the top frame, and a vibration drive mechanism fixedly mounted on the rear side of the top frame. During application, this technology achieves omnidirectional vibration and compaction of molding sand through the cooperation of the vibration mechanism, the tamping device, and the transmission mechanism. All mechanisms operate synchronously under the drive of the same source, simplifying the overall structure of the equipment. The integrated vibration method, combining the overall structure with internal components, effectively improves the vibration quality of the molding sand, reduces quality defects during casting production, and meets the production needs of ductile iron castings of varying complexity.

This invention relates to the field of casting technology and discloses an inertial vibration sand removal machine for casting, comprising: a sand removal machine for vibratory sand removal; a support plate equidistantly disposed inside the sand removal machine for supporting castings; a support base connected to the bottom of the support plate; a cylinder, one end connected to the bottom of the support base and the other end connected to the bottom wall of the sand removal machine for pushing the support base upward; and a flipping assembly disposed on the support plate. This invention enables the flipping of castings, allowing the molding sand on the top of the casting to vibrate and detach from the casting, and keeping the casting with its side facing down for a period of time. This separates the molding sand inside the side holes of the casting from the casting, improving the separation effect between the casting and the molding sand. When flipping small, lightweight castings, it guides the casting to a side-facing position, ensuring that such castings can be flipped smoothly subsequently.