786 results about "Molding sand" patented technology

The invention relates to the technical field of casting equipment, in particular to a casting device for pump valve casting production, which comprises a conveying rack, a mold frame mounted on the conveying rack, and a sand injection station, the sand injection station comprises a mounting frame, a sand discharging mechanism mounted on the mounting frame and a tamping mechanism for tamping molding sand. According to the casting device for pump valve casting production, by arranging the discharging mechanism, when a motor drives a discharging roller to discharge materials in a feeding hopper, a screening disc can be synchronously driven to move up and down, and discharged molding sand is screened; meanwhile, when the molding sand falls on the screen, the middle of the screen is raised, so that the molding sand is more uniformly distributed in the mold frame; and meanwhile, the materials in the mold frame are preliminarily hammered and tamped.

The invention discloses a casting density optimization system and method based on cooperative regulation and control of molding sand moisture and clay blue absorption amount, and relates to the technical field of casting control. According to the method, a self-cleaning wear-resistant alloy probe is used for synchronously collecting a molding sand high-frequency eddy current signal and a multi-spectrum near-infrared signal in the sand mixing process; inputting a pre-training support vector machine regression signal fusion model to obtain a real-time moisture content and a clay blue absorption amount; a preset density target threshold value is combined, a density-molding sand parameter association database is inquired to determine a parameter target interval, a regulation and control instruction is generated after a deviation value is calculated, and a water adding device and a clay conveying device are controlled to adjust the use amount; the density of the casting after regulation and control is detected, if the density does not reach the standard, model output weight iteration optimization is corrected until the density reaches the standard, the system comprises a detection module, a signal processing module, a regulation and control execution module, a density detection and correction module and a central control module, closed-loop control is achieved, and the density stability of the casting is improved.

The invention belongs to the technical field of casting, and particularly relates to a process for improving the appearance quality of a casting by using a sand-isolating chilling block, which comprises the following steps: step 1, during molding or core making, firstly paving a layer of molding sand between risers or in a hot spot area; step 2, fixing the chilling block by using molding sand or supporting nails to ensure that the position of the chilling block is stable; 3, sand is discharged to wrap the chilling block, and it is ensured that a sand layer is firm through compaction operation; 4, after the molten steel is poured, heat of the molten steel is conducted to the chilling block through the sand layer, the local cooling speed of the casting is increased, and sequential solidification is achieved; and 5, after pouring, heat preservation is conducted till box opening is conducted, and an intact casting is formed. According to the invention, a layer of molding sand with a specific thickness is placed between the external chilling block and the mold, so that the external chilling block is converted into the sand insulation chilling block, and in order to ensure that the chilling block achieves the effect of process design requirements and can effectively play a chilling role on a casting, the thickness and size of the chilling block and the thickness of a sand insulation layer can be properly adjusted according to the size of a hot spot of the casting.

The invention is suitable for the technical field of shakeout machines, and provides a sand mold casting shakeout machine based on metal castings, the sand mold casting shakeout machine comprises a shakeout assembly, a cooling assembly is arranged at the bottom of the shakeout assembly, and the cooling assembly comprises a cold accumulation part, a driving part fixedly connected to the interior of the cold accumulation part and a piston part in sliding fit with the interior of the cold accumulation part; according to the shakeout machine for sand mold casting, the problems that in the using process of an existing shakeout machine for sand mold casting, shakeout bonded to the surface of a metal casting is mostly separated by additionally adding a vibration driving source or manually, so that the whole separation process is too complex, and the shakeout effect is poor are solved. And auxiliary cooling treatment is carried out while vibration separation is carried out, so that the separation efficiency of the whole molding sand and the metal casting is reduced, and subsequent machining operation is not facilitated, the separation efficiency of the molding sand and the metal casting is effectively improved, and the molding sand is prevented from being adhered to the surface of the metal casting. And other later operation processes can be conveniently carried out.

The utility model discloses a foundry molding sand mixing device which comprises a mixing box and a stirring mechanism installed in the mixing box, a screening mechanism located above the stirring mechanism is installed in the mixing box, the screening mechanism comprises a driving part installed outside the mixing box, the driving part is fixedly connected with a first screening frame through a transmission part, and the first screening frame is fixedly connected with a second screening frame through a transmission part. A cleaning assembly fixed to the inner wall of the mixing box is arranged in the first screen frame, the transmission part comprises a spline shaft, one end of the spline shaft is fixedly connected with the output end of the driving part, the other end of the spline shaft is movably sleeved with a spline sleeve, and the end, away from the spline shaft, of the spline sleeve is fixedly connected with the first screen frame. The driving piece can drive the first screen frame to rotate and shake through the cooperation of the transmission piece and the feeding pipe, so that raw materials of casting molding sand can be rapidly screened, fine sand grains are screened to fall to the stirring mechanism to be stirred and mixed, the production efficiency is improved, and the quality of the casting molding sand is guaranteed.

The invention belongs to the technical field of casting molding, and particularly relates to faucet casting molding equipment and a molding method thereof.The faucet casting molding equipment comprises an upper box body and a lower box body, a feeding pipe is arranged at the top of the upper box body, a feeding pipe is arranged on one side of the lower box body, the other end hole of the feeding pipe is formed above the feeding pipe, and a conveying auger is arranged in the feeding pipe; a third platform is fixedly installed in the upper box body, a second platform is rotatably installed at the top end of the third platform, a first platform is rotatably installed at the top end of the second platform, the bottom end of the feeding pipe is located above the second platform, a gap is reserved between the bottom end of the feeding pipe and the second platform, and an elastic blocking net is fixedly installed on the inner wall of the feeding pipe and is in a horn shape. The diameter of the bottom end of the elastic blocking net is larger than that of the top end of the elastic blocking net, one end of the elastic blocking net is fixedly connected with the bottom end of the inner wall of the feeding pipe, and the recycled molding sand can be crushed through cooperative use of the structures, so that the practicability of the molding sand is improved.

The invention relates to the technical field of casting molds, and discloses an automobile planet carrier casting mold which comprises a mold plate arranged between an upper mold and a lower mold, an upper sand mold, a lower sand mold, a sand core and a sprue are installed on the mold plate, and the sand core is located between the upper sand mold and the lower sand mold and used for blocking cavity communication of the upper sand mold and the lower sand mold; guide columns corresponding to the upper and lower dies are mounted on the upper and lower end faces of the template, and are inserted into guide holes of the upper and lower dies, so that accurate die assembly is realized. Through combination of the upper sand mold, the lower sand mold and the sand core, the mold can mold an upper casting and a lower casting at the same time by using the sand core to block communication of the mold cavity, the production efficiency is greatly improved, the thickness of the sand core is set to be 0.8 times of the wall thickness of the casting, shrinkage porosity linearity caused by a hot spot in the casting can be avoided, and meanwhile, the production efficiency is improved. The pouring gate supplies liquid to the upper sand mold and the lower sand mold through the residue filter, impurities in molten metal are removed through the filtering assembly, the shrinkage porosity defect caused by the impurities is reduced, and therefore the qualification rate of castings is increased.

A casting molding sand screening device capable of being recycled comprises a machine box and a screen drum rotationally arranged in the machine box, a grinding drum is rotationally installed in the screen drum, a lining ring is fixedly arranged at the position, corresponding to the grinding drum, of the inner side wall of the screen drum, and a grinding face capable of being matched with the lining ring in a mutual grinding mode is arranged on the peripheral side face of the grinding drum. According to the molding sand screening device, the rotatable grinding cylinder is arranged in the screening cylinder, meanwhile, the lining ring matched with the grinding cylinder is arranged on the inner side wall of the screening cylinder, and in the process that molding sand blocks mixed and caked in molding sand are screened in the screening cylinder, small impurity particles can be directly screened out of the screening cylinder; and under the mutual rolling of the rolling cylinder and the lining ring, the caked molding sand blocks can be rolled into molding sand particles with single particle size and capable of achieving the recycling standard, so that the problem of subsequent secondary screening is avoided.

The utility model discloses a shakeout roller device for casting molding sand separation, which is characterized in that an inner cylinder is arranged inside an outer cylinder, the inner cylinder is connected with a first discharge port through a first bearing, the inner cylinder is in a straight cylinder shape, the left side of the inner cylinder is connected with the outer cylinder through a second bearing, a rack is arranged on the circumference of the outer side of the left end of the inner cylinder, and a motor is arranged at the upper part of the outer cylinder; according to the sand shakeout device, the inner cylinder and the outer cylinder are arranged, so that molding sand enters the outer cylinder after being separated, the molding sand is prevented from being accumulated in the inner cylinder, a buffering function is achieved on a casting, the sand shakeout effect is improved, and the molding sand is prevented from being left on the casting; and the device is further provided with first shifting teeth and second shifting teeth which are staggered with each other, molding sand cakes falling into the outer cylinder are crushed, the subsequent crushing treatment procedure of the molding sand cakes is omitted, manpower, material resources and time are saved, the subsequent treatment cost of the molding sand is reduced, and good practicability and applicability are achieved.

The invention relates to the technical field of casting, in particular to vehicle gearbox casting equipment which comprises a support, a supporting plate used for placing a sand casting mold is fixedly connected to the support, a fixing mechanism used for fixing the sand casting mold is arranged above the supporting plate, and a driving mechanism is connected with a material guiding mechanism arranged on one side of the supporting plate. Through a rigid limiting structure of the square fixing frame and the supporting plate, impact of molten metal is resisted, displacement and collapse of a sand mold are avoided, inert gas is synchronously injected to stabilize the sand mold, the defects of sand holes and cold shut are reduced, the casting precision of key parts such as a gearbox bearing hole and an oil duct is improved, the inclusion and porosity are reduced, and the air tightness qualification rate of a shell is improved; the driving mechanism controls lifting, material pushing and vibration demolding in a linkage mode, the production period is shortened, the productivity is improved, the labor cost is reduced, meanwhile, molding sand can be recycled, emission is reduced, green manufacturing is met, and an efficient, high-quality and environment-friendly solution is provided for precise casting of the gearbox shell.

The utility model relates to the technical field of sand screening machines, in particular to a vibration swing type sand screening machine for molding sand. According to the technical scheme, a discharging hopper is installed on a base, a sieve tray is installed on the discharging hopper, a discharging pipe is arranged on one side of the sieve tray, a top cover is installed at the top end of the sieve tray, a support is elastically installed on the base through a spring, and vibration motors are installed on the two sides of the support. An upper sealing strip and a lower sealing strip are respectively arranged on convex edges at the upper end and the lower end of the sieve tray, a positioning hole is formed in the upper sealing strip, and a positioning block is arranged on the lower sealing strip. The upper sealing strip and the lower sealing strip are respectively arranged on the convex edges at the upper end and the lower end of the sieve tray, and are matched with each other through the positioning blocks and the positioning holes to realize quick limiting and butt joint, so that the tight sealing between the sieve trays is realized. And the hoop is clamped and fixed with the convex edge of the sieve tray through the clamping groove, so that stable connection can be provided, and the sieve tray is ensured not to loosen or fall off in the vibration process.

The present invention discloses a casting mold vibrating and compacting mechanism and an intelligent casting island, comprising a conveying frame, a jacking device and a vibrating device. A conveying trolley is provided on the conveying frame, and a sand box is provided on the conveying trolley. Fixed pipes are fixedly provided on both sides of the conveying trolley, and sliding pipes are rotatably and slidably provided on the fixed pipes. When fixing the model, the second connecting rope is stretched by pulling the hook, and the reel is rotated to hang the model. The hooks on both sides can pull different lengths to adapt to models of different specifications. After the model is hung, the hooks on both sides and the model are simultaneously lowered into the sand box by sliding the reel. In addition, in the process of adding molding sand and vibrating and compacting it, instability of the model is avoided. After the molding sand buries the bottom of the model and is vibrated and compacted, the hook is separated from the model by a decoupling component, which not only improves efficiency, but also ensures the stability of the model during the sand adding process, improves the subsequent pouring effect, and thus improves the quality of the casting.

The present invention discloses molding sand additive packages, molding sand binder compositions comprising the molding sand additive packages, molding sand comprising the molding sand binder compositions, use of the molding sand and a method of sand casting.

The invention discloses an aerospace vehicle rapid response function composite casting mold forming method and device, and belongs to the crossing field of a sand mold 3D printing technology and an integrated die casting technology. According to the method, firstly, a numerical control machining center or sand mold 3D printing equipment is adopted for manufacturing a multi-material composite core mold, then a cut or printed sand mold / core is assembled on a core mold base in a ridge-closing mode, a servo cabin metal mold is driven to be matched with the sand mold core mold through a mold closing locking mechanism, and the whole set of die-casting mold is formed. Secondly, light alloy (magnesium, aluminum, titanium and the like) is smelted at a high temperature, the speed field and the pressure field of high-temperature molten metal mold filling are indirectly controlled by controlling the movement speed of a piston rod, and high-quality castings are obtained through crystallization and solidification under the pressure. The innovatively proposed'metal mold and sand mold 'combined die-casting die can quickly realize the dynamic heat balance of the temperature of the die. According to the aerospace vehicle rapid response function composite casting mold forming method and device, innovative and green development of a light high-strength alloy casting process is promoted.

The invention relates to the field of sand mixing equipment, in particular to an automatic sand mixing device for hardware casting, which comprises a sand mixer, the sand mixer comprises a machine body, and a middle mixing assembly, an edge mixing assembly and a material leading-out assembly are arranged in the machine body; the middle mixing assembly is used for mixing the molding material in the middle; the edge part mixing assembly is used for mixing molding materials at the edge part; the material guiding-out assembly is used for guiding out the mixed molding material; according to the sand mixer, through cooperative operation of the main scraping plates, the auxiliary scraping plates, the raking claws and the stirring blades, a three-dimensional mixing system is constructed, molding materials can be treated from the bottom to the edge without dead corners, and compared with a single stirring mode of a traditional sand mixer, the sand mixer has the advantages that the stirring efficiency is greatly improved, and the production cost is reduced. The mixing efficiency is remarkably improved, various molding materials can be uniformly blended, and molding sand with stable performance is provided for casting.

The invention relates to the technical field of precoated sand casting, and discloses a precoated sand casting production line based on an intelligent casting island, the precoated sand casting production line comprises a machine body, a sand feeding pipe, a negative pressure sand suction pipe, a distance adjusting piece and a rotatable transmission shaft are respectively mounted in the machine body, and the distance adjusting piece is in transmission connection with two mold frames which are symmetrically arranged and have an adjustable distance; casting systems are arranged on the two mold frames, and each casting system comprises a toothed plate mounted on the machine body, a magnetic field generator mounted on the machine body, a casting frame capable of synchronously moving back and forth and left and right on the mold frames in a reciprocating manner, and a synchronous shaft capable of periodically and alternately rotating forwards and backwards. Technical breakthrough is achieved through the synergistic effect of the magnetic vibration coating and multi-mode vibration, Fe70Ga30 alloy nano-particles of the functional layer generate magnetic domain periodic orientation in an alternating magnetic field, micron-sized multi-axial vibration is excited, the surface of molding sand and a mold interface is deepened, intermolecular acting force is destroyed, deep-layer adhesive sand is stripped in a non-contact mode, and the surface of the mold is stripped in a non-contact mode. The problem that energy penetration of traditional impact type cleaning is insufficient is solved.

The invention relates to a jolt ramming table for lost foam casting, and belongs to the technical field of lost foam casting, the jolt ramming table comprises a jolt ramming table body, a limiting mechanism for limiting a sand box is arranged on the jolt ramming table body, and side striking mechanisms for striking the two sides of the sand box are arranged on the two sides of the jolt ramming table body; the side-striking mechanism comprises a vertically-arranged main rod, a plurality of side-striking components are arranged on the inner side of the main rod, and a driving module for driving the main rod to move close to or away from the sand box in a reciprocating mode is arranged on the compaction table body. The driving module drives the main rod to move close to or away from the sand box in a reciprocating mode, so that the side striking component collides the side wall of the sand box back and forth, the sand box further generates vibration in the side direction, then molding sand in the sand box is further vibrated and compacted, and the compaction effect is improved.

The invention relates to the technical field of casting devices, and particularly discloses a pump valve casting casting demolding device which comprises a recycling box, a cross beam is fixedly arranged on the recycling box, the cross beam is close to the middle, a bearing structure is fixedly arranged on the cross beam, and a limiting structure is fixedly arranged on the bearing structure. A loading unit is detachably mounted on the bearing structure, the loading unit is fixed through a limiting structure, and a separating structure is detachably mounted on the limiting structure. Through the sealing fit design of the loading unit and the precise pushing design of the separating structure, molding sand is automatically scattered and recycled after the box bottom and the pouring jacket are separated; the casting is stably moved out through directional pushing of the push plate, and the problem that the casting is difficult to take out in the lost foam casting process is thoroughly solved.

The invention provides a technological method for casting a steel casting. The technological method comprises the following steps that S1, a model is manufactured, specifically, the model is manufactured in a 3D printing mode; molding sand is manufactured, specifically, molding sand raw materials are selected, and then the molding sand raw materials are added into automatic sand mixing equipment to be fully mixed; modeling: selecting a model of a specified steel casting, and then filling the periphery of the model with the molding sand mixed in the step S2 to form a casting mold; steel materials are added into a smelting furnace to be smelted, and the required temperature and chemical components of the steel materials are achieved; before smelting, after a proper steel material is selected, elements in the selected steel material are detected through a portable spectrum analyzer before smelting, and replacement, smelting and smelting adjustment are needed when the steel material is detected to be unqualified. According to the technological method for casting the steel casting, through operation of three modes in the smelting process and monitoring in the machining process, the problem can be prevented from occurring in the smelting process of the steel casting, and problem treatment can be conducted in time.

The invention discloses a precisely-formed automobile part casting device, and relates to the technical field of automobile part production equipment. The precisely-formed automobile part casting device comprises a mixing tank, disturbance pieces which are provided with double-helix structures and are symmetrically distributed, a casting device body which is arranged in the mixing tank, a casting device body which is arranged in the mixing tank, a casting device body which is arranged in the mixing tank, a casting device body which is arranged in the casting device body, and a casting device body which is arranged in the casting device body and used for casting the casting device body and used for casting the casting device body. The material upturning device is used for upturning materials close to the bottom of the outer wall in the mixing tank and then circulating to the bottom; through the design of the stirring pieces which are symmetrically distributed in a double-helix structure, three-dimensional circulating flow of materials in the casting device is achieved, the problem of mixing dead angles existing in a traditional stirring mode is effectively solved, bottom sediment materials can be continuously turned upwards and recycled, the mixing uniformity of molding sand and a binder is remarkably improved, and the casting efficiency is improved. And the generation probability of casting air holes and other defects is reduced.

The invention relates to the technical field of foundry sand treatment devices, in particular to a screening device for butterfly valve casting molding sand, which comprises a buffer tank and a base, the upper end of the base is fixedly connected with a filtering tank, the outer side of the filtering tank is provided with a first motor, and the inner side of the filtering tank is provided with a filtering mechanism for screening the molding sand. A conveying belt is installed at the upper end of the base, a discharging mechanism used for evenly discharging molding sand is installed at the upper end of the conveying belt, aiming at radioactive impurities of the nuclear power butterfly valve to the molding sand, through combination of visual recognition and magnetic separation, the content of metal impurities is reduced, and the casting standard of nuclear first-grade components is met; sintered sand blocks larger than 1.5 mm can be accurately removed, it is avoided that the sintered sand blocks block a follow-up screen or the strength of a sand mold is uneven, the 0.8 mm aperture of the woven mesh is matched with vibration of the arc-edge sleeve to prevent blocking, coarse sand grading of silica sand is achieved, and the problem that in traditional screening, fine powder agglomerates, and air permeability is insufficient is solved.

The invention discloses a method and a device for measuring the air permeability of molding sand, belongs to the technical field of casting molding sand detection, and solves the problems of errors and low detection efficiency in existing molding sand air permeability detection. The device comprises a measuring work box, a first supporting frame is arranged on one side of the top of the measuring work box, a feeding device is arranged on the first supporting frame, a second supporting frame is arranged on one side of the first supporting frame, a pressing device is arranged on the second supporting frame, a moving groove body is arranged between the first supporting frame and the second supporting frame, and a clamping device is arranged on the moving groove body. A sample cylinder is movably inserted into the movable groove body, a driving assembly for driving the movable groove body to move is arranged on the measurement working box, and a sample seat for placing the sample cylinder is arranged on the other side of the top of the measurement working box. According to the method and the device for measuring the air permeability of the molding sand, the air permeability of the molding sand can be detected on site under the condition that the measurement precision is guaranteed, and the production efficiency is effectively improved.

The invention discloses a uniform-granularity sand mill, and relates to the technical field of material grinding. The uniform-particle-size sand mill comprises a driving mechanism, a grinding rotor, a sand milling bin, a filter cartridge and a pushing mechanism. The filter cartridge is connected into the sanding bins, a discharging cavity is formed between the sanding bins, the driving mechanism is in transmission connection with the grinding rotor, the grinding rotor extends into the filter cartridge, and the driving mechanism is used for driving a grinding medium and a material to move in the filter cartridge through the grinding rotor so as to grind the material into material particles; and the filtering cylinder is used for allowing material particles reaching the preset particle size to penetrate through, a discharging opening is formed in the sanding bin, and the pushing mechanism is installed in the discharging cavity and used for pushing the material particles in the discharging cavity out of the discharging opening. The uniform-granularity sand mill provided by the invention can realize filtering and discharging of material particles under the condition of ensuring the grinding efficiency, so that the granularity distribution of the material particles is highly concentrated, the granularity uniformity is improved, and the user requirements are met.

The invention discloses an evanescent mode casting device for metal processing, which belongs to the technical field of metal casting and comprises a conveying mechanism for conveying a mold, and the conveying mechanism is provided with a casting mechanism for pouring molten metal into the mold and an injection mechanism for injecting molding sand into the mold. The conveying mechanism can convey the lower mold and drive the lower mold to circulate among actions of loading into the lost foam, injecting molding sand, casting and pouring out of the lost foam and the molding sand, so that full-automatic lost foam casting operation is realized, and the continuity is good; according to the casting mechanism, when the upper mold plate is moved to the lower mold, the inserting pipe is driven to be inserted into the butt joint pipe at the same time, molten metal is conveniently cast into the lower mold, and the automation degree is high; when the upper mold plate and the lower mold are in butt joint, the sliding frame descends at the same time, the lowest evanescent mode is automatically placed in the lower mold through cooperation of the buckle module, the front column and the rear column, and automatic mold placing is achieved.

The casting molding sand screening equipment comprises a screening box, a box door and a feeding pipe, the middle position of one side of the screening box is provided with an opening, the outer side wall of the screening box is fixedly connected with a collecting frame, the box door is movably connected to the front side of the screening box, and the feeding pipe is arranged at the top of the screening box and communicated with the interior of the screening box. The device further comprises a screening assembly and a conveying assembly, the screening assembly is arranged in the screening box, and the conveying assembly is arranged in the collecting frame. The utility model belongs to the technical field of casting and screening, and particularly relates to casting molding sand screening equipment for casting, which solves the problems of poor screening effect and lower screening efficiency caused by qualified molding sand always existing in screening of unqualified molding sand.

Moulding material mixture of natural and / or ceramic sands with a phenol-formaldehyde resin-free binder for foundry moulding sands, wherein the binder is either ➢as a one-component binder based on polyurethane and / or polyurea, comprising an aromatic or aliphatic oligomeric and / or polymeric isocyanate or a mixture of several aromatic and / or aliphatic oligomeric and / or polymeric isocyanates with partially delayed reactivity, and as an additive a non-functional diluent, wherein the isocyanates consist entirely or partially of pre-crosslinked reaction products, and wherein the pre-crosslinking is brought about by the reaction with di- or polyfunctional polyols with a stoichiometric deficit of hydrogen-active compounds, resulting in a residual content of free isocyanate groups in the range of 5 to 35%, and wherein the one-component binder is suitable for a multi-phase curing process using water-alcohol mixtures, or ➢ as a two-component binder based on polyurethane and / or polyurea, comprising . a component A with an average hydrogen functionality of 2.0 to 3.9, with an average equivalent weight of 450 to 900 g / eq of the reactants and with functional and / or non-functional additives that control the reactivity, non-functional admixtures that promote processability and ensure stability, wherein the reactants of component A are polyether alcohol mixtures of hydroxyl and / or mercapto groups and / or internal nitrogen-containing individual components, wherein the hydrogen-active compounds of the mixture of component A • two- to eight-functional polyether alcohols obtained by anionic or cationic ring-opening polymerization of cyclic ethers and simultaneous addition of the resulting polyether chains to OH / NH starter molecules and / or • Polythiols resulting from the esterification reaction of 3-mercaptopropionic acid with two or more alcohols or which are hydrogen-active polysulfide polymers with free SH groups, are selected and combined, and • an isocyanate-containing component B is present.

An automatic slicking device for molding sand on the surface of a sand box belongs to the technical field of sand mold casting and comprises a rack, a lifting mechanism mounted at the top of the rack, guide rail assemblies fixedly mounted at the bottom of the lifting mechanism and extending in the length direction of the sand box, and a slicking mechanism arranged between the two guide rail assemblies. The two ends of the slicking mechanism are in rolling connection with the guide rail assembly through rollers, a rack is fixedly arranged at the bottom of the guide rail assembly in the length direction of the guide rail assembly, the driving assembly is installed on the slicking mechanism and engaged with the rack through a gear, and the compaction detection mechanism is installed on the front side of the slicking mechanism in the advancing direction. The scraping mechanism can meet the scraping requirements of sand boxes with different heights due to the arrangement of the lifting mechanism, the overall adaptability is high, the positioning precision of descending of the scraping mechanism can be improved due to the arrangement of the compaction detection mechanism, manual adjustment is not needed, the positioning precision is high, the scraping effect is good, the automation degree is high, and the labor intensity is effectively reduced.

The invention relates to the technical field of sand mixing, in particular to a sand mixing machine for molding sand for casting, which comprises a sand mixing bin, a mixing mechanism for mixing the molding sand in the sand mixing bin, and a discharging mechanism for discharging the molding sand in the sand mixing bin, according to the sand mixing machine for the molding sand for casting, the material stirring paddle is inserted into materials in the sand mixing bin, so that an adhesive is directly injected into a material base body; in the process that the material stirring assembly rotates in the circumferential direction of the sand mixing bin, on one hand, materials are subjected to three-dimensional shearing stirring, and the macroscopic mixing effect is enhanced; and secondly, the adhesive is prevented from being exposed on the surface of the material by deeply burying and adding the material, so that the generation of flying dust is inhibited from the source. Besides, the addition mode can realize uniform dispersion of the adhesive in a material matrix, so that the mixing period is remarkably shortened, and chemical phase change caused by temperature rise due to excessive stirring of the gravels is effectively prevented.

The invention relates to the technical field of molding sand recycling and processing, in particular to a waste sand recycling device for casting processing, which comprises a screening device for screening waste sand and a feeding mechanism for conveying casting sand screened to be qualified, and a tank body communicated with the feeding mechanism is vertically arranged on one side of the screening device. The interior of the tank body is rotationally connected with a rotating shaft which is vertically arranged; through the synergistic effect of the feeding mechanism, the magnetic separation structure and the transmission structure, the treatment efficiency can be automatically adjusted according to the feeding amount of waste sand; when the feeding amount is increased, the magnetic separation structure moves downwards due to the weight of materials, then the transmission structure is triggered to drive the magnetic separation structure to rotate, and the processing capacity is improved; when the feeding amount is further increased, redundant materials can be distributed to other magnetic separation structures to be treated, it is ensured that the device can efficiently cope with different feeding amounts all the time, and the problem that a traditional device is insufficient in treatment capacity or idles due to the feeding amount change is solved.

The utility model discloses an efficient molding device for molding sand casting, which comprises a base, a stand column, a top plate, a cavity, a lifting unit and a driving mechanism, the stand column is arranged on the base along the longitudinal direction, the top plate is fixedly arranged at the top of the stand column, the cavity is detachably arranged on the base, and the lifting unit is arranged on the base. The lifting unit is arranged at the bottom of the top plate in the longitudinal direction and is in transmission connection with the cavity, the driving mechanism is arranged at the bottom of the base and is in transmission connection with the cavity, the surface of the base is provided with sliding grooves which are arranged in a crossed mode, and the cavity comprises a top cover, a bottom plate and four side plates arranged around the top cover and the bottom plate. According to the utility model, the cavity side plates can be driven to be automatically opened and closed through the driving mechanism, and the top cover can be driven to be automatically opened and closed through the lifting unit, so that molding sand can be conveniently filled into the cavity, and mold opening and demolding can be conveniently carried out after casting is completed, and the production efficiency of molding sand casting is further improved.