315results about "Moulding flasks" patented technology

The invention discloses a casting production device of a corrosion-resistant cast iron cylinder sleeve, and relates to the technical field of cylinder sleeve casting, the casting production device comprises a bottom frame, a bottom shell is fixed on the top surface of the bottom frame, two sliding grooves are formed in the top surface of the bottom shell, the cylinders are fixed on four edges of the top surface of the bottom frame, and the top shell is fixed on the top of the outer wall of the cylinders. An electric hydraulic rod penetrates through and is fixed to the middle of the top face of the top shell, a sliding shell is fixed to the bottom face of the telescopic end of the electric hydraulic rod, the inner wall of the sliding shell is slidably connected with the outer wall of a cylinder, a round mold is arranged in the middle of the bottom face of the sliding shell, a sand mold block and a U-shaped frame are placed in the middle of the top face of the top shell, and the U-shaped frame is fixed to the bottom end in the bottom shell. The sand mold block is clamped and positioned through the two U-shaped frame plates, so that the problem that the casting effect of the corrosion-resistant cast iron cylinder sleeve is poor due to the fact that the sand mold block deviates on the table top is solved.

The utility model belongs to the technical field of sand box casting, and particularly relates to a sand box fastening device for casting, which comprises an upper box and a lower box, four corners of a box body of the upper box are respectively provided with a first bolt hole penetrating from top to bottom, and four corners of a box body of the lower box are respectively provided with a second bolt hole penetrating from top to bottom; the first bolt holes and the second bolt holes are in one-to-one butt joint, and screw rods used for connecting the upper box and the lower box into a whole are assembled in the first bolt holes and the second bolt holes. A U-shaped limiting plate is further included. The limiting plate is tightly attached to the outer wall of the upper box and the outer wall of the lower box. Two limiting blocks are symmetrically arranged on the inner wall of the limiting plate, through holes are formed in the limiting blocks, and the two screw rods located on the same side are connected into the through holes of the limiting blocks correspondingly. According to the device, the screw can be quickly disassembled and assembled, the procedure of completely disassembling a nut and a gasket is reduced, and the working efficiency is improved; and the sand box is limited and fixed by connecting the limiting plate through the screw rod, so that the mold closing precision and the pressing effect of the upper and lower box bodies are ensured.

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 utility model relates to the technical field of casting, in particular to a vacuum negative pressure device for lost foam casting. According to the technical scheme, the device comprises a mounting bottom plate, a vacuum pump is arranged above the mounting bottom plate, a pressure stabilizing assembly is arranged at the position, located on the mounting bottom plate, of the air inlet end of the vacuum pump, a filtering assembly is arranged on one side of the pressure stabilizing assembly, a negative pressure pipe is arranged on a connecting pipe, and a vacuum distribution mechanism is arranged at the end, away from the connecting pipe, of the negative pressure pipe. The filtering assembly adopts a multi-layer composite filtering structure, so that impurities in gas can be efficiently removed, meanwhile, the system pressure can be monitored and adjusted in real time through an intelligent central controller in the pressure stabilizing assembly, pressure fluctuation is effectively buffered, a stable negative pressure environment is provided for lost foam casting, and the production efficiency is improved. And meanwhile, the vacuum distribution mechanism is designed in a modularized mode, negative pressure distribution can be accurately controlled according to different production requirements, the air exhaust efficiency is improved, and the production efficiency of lost foam casting and the precision of castings can be improved.

The invention relates to the technical field of sand core molds, and discloses a casting forming sand core mold which comprises a base and two sand core mold bodies. The two sand core mold bodies are arranged on the base and can be far away from or close to each other, and cavities are formed in the adjacent sides of the two sand core mold bodies; a loading piece is mounted at the top of the base, and a ceramic core bar and a core bar are loaded on the loading piece; and after the two sand core mold bodies are close to each other and are combined, the loading piece, the ceramic core bar rod and the core bar are arranged in the cavities in the two sand core mold bodies. The ceramic core bar rod is pre-embedded in the sand core, the characteristics of good high-temperature stability and high bending strength of the ceramic core bar rod are utilized, internal support is formed for the sand core in the molten iron pouring process, and deformation of the sand core in the vertical direction caused by thermal shock and molten iron buoyancy is effectively restrained, so that the size precision of a hydraulic part control valve main body casting is improved; and the subsequent processing correction and scrap cost is reduced.

The utility model discloses a wooden mould box for producing large castings, which comprises an upper mould box and a lower mould box, the lower mould box comprises an inner wooden box and an outer wooden box, the inner wooden box is positioned inside the outer wooden box, an isolation cavity is formed between the inner wooden box and the outer wooden box, a plurality of support columns are arranged in the isolation cavity, a plurality of through holes are arranged on the periphery of the inner wooden box, U-shaped heat conduction pipes are inserted in the through holes, and the U-shaped heat conduction pipes are communicated with the inner wooden box. One end of the U-shaped heat conduction pipe is connected with a liquid inlet pipe, the other end of the U-shaped heat conduction pipe is connected with a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe respectively extend out of the outer wood box, the upper mold box and the lower mold box have the same structure, and a feeding pipe is connected to the middle of the outer wood box of the upper mold box and extends into the inner wood box of the upper mold box. A structure formed by the inner wooden box, the outer wooden box and the supporting columns is adopted, and is matched with internal molding sand, so that the overall strength and stability of the molding box are greatly enhanced. And the U-shaped heat conduction pipe can accurately regulate and control the cooling speed and is flexible to arrange, so that all parts of the casting are uniformly cooled.

This utility model relates to the field of mold processing technology and discloses a casting mold clamping fixture, including a shell, a mold body is disposed inside the shell, and an ejection assembly is disposed on the inner wall of the shell. The ejection assembly includes a mounting groove, which is opened in the inner wall of the shell. A lead screw is rotatably connected inside the mounting groove. One end of the lead screw is fixedly connected to a shaft, and one end of the shaft is fixedly connected to a throttle. An internal threaded block is threaded to the external thread of the lead screw. A support rod is hinged to the upper surface of the internal threaded block, and a movable plate is hinged to one end of the support rod. This utility model lifts the movable plate by linking the throttle with the support rod, and the spring thrust is transmitted through the push plate, facilitating the ejection of the mold. It eliminates the need for a motor drive, reduces the risk of electrical failure, simplifies the demolding process, and is equipped with a bidirectional opposing clamping mechanism. Through the synchronous approaching movement of the clamping frames on both sides, the mold is laterally positioned, thereby enhancing the installation stability.

This invention discloses a sand-cleaning device and its operating method for automobile cylinder head sand casting, relating to the field of automobile cylinder head production technology. It includes two sand-cleaning bodies, each equipped with: a transmission component for moving the automobile cylinder head; a linkage component for rotating the automobile cylinder head while it is moving; a limiting component for limiting the rotation of the automobile cylinder head; a guiding component for guiding the moving automobile cylinder head; and a buffer component for buffering the rotation of the automobile cylinder head. This invention further solves the problem that traditional sand-cleaning devices for automobile cylinder head sand casting often leave residual sand in the cylinder head cavity after casting, making it difficult for traditional water washing and air suction devices to effectively clean the cylinder head cavity. This is achieved by setting a buffer rod on the inner wall of the limiting groove and a fixing block on the outer wall of the buffer rod, allowing the gear plate to continuously rotate the automobile cylinder head via a clamping plate.

The utility model provides a material collecting device for casting sand box machining, and belongs to the technical field of casting auxiliary devices. The material collecting device for casting sand box machining comprises a supporting frame and a material receiving mechanism, an operation table is installed at the top of the supporting frame, moving wheels are installed at the bottom of the supporting frame, a material frame is movably connected to the top of the operation table, a stabilizing rod is movably connected into the material frame, and a collecting cavity is formed in the top of the operation table. By arranging the material receiving mechanism, when a worker adds sandy soil into an external sand box at the top of the operation table, the material receiving mechanism can receive and work in a centralized mode on the outer side of the sand box in the sandy soil adding process; and the situation that the sandy soil is difficult to receive and concentrate when the operation table is used is avoided, so that the sandy soil receiving and concentrating effect of the operation table is improved.

The utility model relates to the technical field of metal casting equipment, and particularly discloses a high-strength metal casting casting device which comprises a first table board, supporting legs evenly distributed below the first table board, a second table board arranged on the upper surface of the first table board through a first support, a third table board arranged above the second table board in a sliding mode, and a lower sand box placed in the center of the third table board. An upper sand box is detachably arranged on the upper portion of the lower sand box, a sliding ring is arranged on the outer side of the lower sand box, a rotating motor is arranged in the middle of the first table top, a swing arm is arranged at the output end of the rotating motor, and a shaking mechanism is arranged at the outward end of the swing arm. According to the sand shaking device, in the shaking process, the left-right and front-back reciprocating swing of the lower sand box can be realized through the reciprocating swing of the swing arm, so that the sand shaking effect is better.

An investment casting process for manufacturing a cast component 101 is provided. The investment casting process includes forming 201 a core 301, casting 202 the cast component about the core such that a core positioning feature 320; 901 provides a location of an anticipated pilot hole in the cast component, removing 204 the core from the cast component once the casting is completed, locating, forming and sizing 205 a pilot hole 2020 to form a resized pilot hole 2021 that can receive a sealing plug 102 and installing 206 the sealing plug into the resized pilot hole.

The utility model relates to the technical field of casting and metallurgy, in particular to a sand box for sand mold casting, which comprises a first sand box, a second sand box and a pouring part, a plurality of stacked sand cores are arranged in the first sand box and the second sand box, the plurality of sand cores form a sand mold, and the pouring part is arranged in the sand mold. The pouring part comprises a pouring cup, a straight pouring gate and a plurality of bidirectional pouring cross pouring gates which are communicated in sequence, and casting molten iron passing through the pouring part is injected into the sand mold. According to the sand box for sand mold casting, the production quality of large-diameter castings is improved, the pouring time is greatly shortened, meanwhile, the utilization rate of the space in the sand box and molding sand is increased, and waste of the molding sand and molten iron is also avoided.

The utility model provides a sand box with a heat preservation function, which relates to the technical field of casting sand boxes, and comprises a sand box body, a limiting roller, a first buffer frame, a second buffer frame, a limiting hole, a through hole, a semicircular hole, a connecting plate, a fixing component and a flexible heat preservation piece, according to the device, the outside of the sand box body can be effectively protected through the combination of the first buffer frame and the second buffer frame, so that the probability that the sand box is damaged by external impact in the whole casting operation process is remarkably reduced, the service life of the sand box is prolonged, and then the heat preservation effect can be guaranteed; on the basis, a buffer frame is prepared from a polyurethane plate, and a flexible heat preservation part is matched, so that the heat preservation performance of the sand box can be further improved, and the heat preservation effect is better.

The invention discloses a process for producing high-performance cast balls on a V-method production line, which comprises an electric heating box, an air exhaust sand box, a vacuum air exhaust pipeline, a cast ball model, a jolt rammer, a negative pressure box, a sand storage tank and a hydraulic system, the hydraulic system is associated with the electric heating box, and the vacuum air exhaust pipeline is communicated with the air exhaust sand box. The vacuum-pumping V-method production line technology is adopted, the air exhaust sand box is matched with the ball casting model and the model plate to generate negative pressure, molten iron mold filling is smoother, internal casting defects are reduced, meanwhile, only a vacuum pump and a sand storage tank need to be additionally arranged on the V-method production line, equipment is simple and convenient to maintain, and production efficiency is improved. The rectangular plate B on the air exhaust sand box and the rectangular plate A on the model plate are in butt joint and are matched with the sealing embedded blocks to be inserted into the rectangular embedded grooves for positioning, dismounting, replacing and overhauling are convenient, efficient vibration reduction is provided for the vibration compactor through cooperation of the hydraulic buffer rods and the buffer springs and the rubber air bag buffers, and the vibration reduction performance and the vibration compaction effect are improved.

This utility model provides a bed mold for a mineral casting machine tool for tapping and shoveling. The mold is made of metal and includes a base plate. A left and right side panel are respectively provided on the left and right edges of the base plate, and a front and rear side panel are respectively provided on the front and rear edges. The left, front, right, and rear side panels are assembled and, after assembly, form a bed cavity in the middle. A left and right upper plate are respectively provided on the inner side of the left and right side panels. The two ends of the left and right upper plates are respectively installed on the upper surfaces of the front and rear side panels. A left and right circular tube are respectively provided below the left and right upper plates, and the two ends of the left and right circular tubes are respectively installed on the inner surfaces of the front and rear side panels. This mold has advantages such as small deformation, high precision, and convenient and quick assembly and disassembly.

The application discloses a fixing block for a magnetic steel casting and a mold of the fixing block and belongs to the technical field of magnetic steel casting drilling parts. The fixing block comprises a cuboid fixing block body, the material of the fixing block body is coated sand material, and one end of the fixing block body is provided with a notch. The notch can clamp the end of a core column, and the fixing block body can be fixed on the side wall of a mold cavity. The cuboid fixing block body is arranged, so that the fixing block body can be firmly clamped into a strip-shaped groove and pave the way for fixing the core column. The notch is arranged, the notch can clamp the end of the core column, the core column is prevented from moving, and the fixing effect is affected.

The utility model discloses a casting mold structure which comprises a mold plate, a mounting groove is formed in the mold plate, a plurality of positioning pins are arranged at the inner bottom of the mounting groove, an insert is mounted in the mounting groove through the positioning pins, and a positioning convex block is arranged on the inner side wall of the mounting groove and used for being attached to the side wall of the insert. The mold has the advantages that the risk that the insert topples over can be reduced, the positioning precision of the insert is improved, and the casting qualification rate of products is increased.

The utility model provides a precise burdening sand mixer casting mould, which relates to the technical field of casting moulds, and comprises a mould body, a fixing mechanism is arranged on the mould body, the fixing mechanism comprises two clamping plates, two clamping grooves and two positioning grooves, the inside of a cylindrical hole is rotatably connected with a round rod through a bearing, and the inside of the round rod is fixedly connected with the mould body. According to the utility model, through the arrangement of the fixing mechanism, the upper die and the lower die which are in butt joint can be stably fixed together, and a worker does not need to take and place heavy objects for many times or frequently, so that the production efficiency of castings is ensured; the use effect of the casting mold of the precise batching sand mixer is improved, and meanwhile the use efficiency of the casting mold of the precise batching sand mixer is also improved.

The present invention relates to a set of foundry cores (1) comprising at least one refractory metal core (4), at least one ceramic core (2) and at least one fastening element (6) placed on the ceramic core (2) and / or on the refractory metal core (4), wherein the cores (2, 4) and the at least one fastening element (6) are rigidly connected to each other, wherein the set of cores (1) has a protective coating (10) covering at least part of the refractory metal core (4) and the at least one fastening element (6), and wherein the protective coating (10) comprises at least a first protective layer.

The utility model discloses a sand box structure is used in foundry processing of casting, including pit, lower box and upper box, be provided with lower box in pit, be provided with upper box at the top of lower box, be provided with the axle pole eye at the center of upper box, be provided with lower part cavity in lower box, be provided with inner core in lower part cavity, be provided with the locating plate at the top surface of inner core, be provided with the locating hole in the center of locating plate, and the locating hole is concentric with axle pole eye, pit. The utility model discloses adopt the mode of locating plate and axle pole eye intercoordination to carry out the closing of box, has guaranteed the alignment accuracy of upper and lower box higher, avoided the cumulative error in traditional cross line method, can realize the closing of box of higher accuracy, has greatly shortened the closing of box time, thereby has promoted the overall quality of casting.

The utility model relates to the technical field of swage sand-coated production equipment, and particularly discloses an automatic box locking structure of a swage sand-coated line sand box, which comprises a sand box, a support, a box clamp and a driving device, one end of the box clamp is clamped on the first flange on the outer side of the sand box, the other end of the box clamp is connected with the driving device, and the driving device is connected with the hydraulic station. According to the utility model, the driving device is matched with the hydraulic station and the box clamp, so that the purpose of automatically and quickly pressing and loosening the upper / lower sand box in the pouring process can be realized, and the labor intensity of workers is reduced; through the arrangement of the connecting plate, the lifting plate, the guide columns and the connecting rods, the force is uniform when the upper sand box and the lower sand box are closed, meanwhile, the parting surfaces between the closed sand boxes are tightly connected, and the problem that molten iron leaks from the parting surfaces of the upper sand box and the lower sand box in the pouring process is solved.

The invention relates to the technical field of chaplets, and discloses a chaplet applied to an evanescent mode and a using method thereof.The chaplet comprises a main body unit, the main body unit comprises supporting plates, core rods are arranged on one side between the two supporting plates, an adjusting unit is arranged between the two core rods, and the adjusting unit comprises a first connecting plate arranged between the two core rods; a fixing plate is arranged on the top face of the first connecting plate on the lower side, a fixing assembly with the fixing function is arranged on the top face of the fixing plate, and an adjusting assembly with the covering area increasing function is arranged between the fixing plate and the fixing assembly and located in the fixing assembly. The structure has the beneficial effects that rapid and large-range adjustment can be achieved through mutual cooperation of the structures, so that the structure conforms to lost foam casting of more models, chaplets of various models and sizes do not need to be placed in a classified mode, workers can take and use the chaplets conveniently, the casting problem caused by incorrect models of the chaplets is solved, and the production efficiency is improved. Therefore, the success rate of lost foam casting is improved.

The utility model provides a V-method sand box sealing tool, which comprises a sealing cover, four rubber strips, a support rib and a tie bar, the periphery of the bottom end of the sealing cover is respectively connected with the four rubber strips, the support rib is connected with the inner cavity of the sealing cover through the tie bar, the support rib is connected with the four rubber strips, and the tie bar is connected with the inner cavity of the sealing cover. And the tie bar is connected with the inner cavity wall of the sealing cover. According to the utility model, the periphery of the bottom end of the sealing cover is respectively connected with the four rubber strips, the supporting rib is connected with the inner cavity of the sealing cover through the tie bar, the supporting rib is connected with the four rubber strips, the tie bar is connected with the inner cavity wall of the sealing cover, and the sealing cover covers the top of the sand box, so that the use requirement can be met; stable air pressure in the sand box after pouring can be ensured, a film can be replaced for use, and the cost is reduced; the structure is simple, the cost is low, and the applicability is wide.

The utility model relates to the technical field of casting, and discloses a casting precoated sand mold pressing device which comprises a bottom plate, four supporting rods are arranged on the bottom plate, a cooling mechanism is arranged on the tops of the four supporting rods, a containing shell is movably connected to the upper portion of the cooling mechanism, a pushing mechanism is arranged in the containing shell, and the pushing mechanism is arranged on the bottom plate. And an extrusion mechanism is arranged in the placement shell, and the pushing mechanism comprises a U-shaped plate, a threaded sleeve, a driving assembly, a threaded rod, a pushing block, a connecting rod and a T-shaped assembly. By arranging the U-shaped plate, the threaded sleeve, the driving assembly, the threaded rod, the pushing block and the connecting rod, a mold can be pushed, so that the mold is quickly separated from the placement shell, workers can take down the mold conveniently, the mold casting efficiency is greatly improved, the mold can be pressed tightly through the extrusion mechanism, and the situation that the mold is damaged during casting is avoided. And molten iron leakage caused by insufficient mold closing pressure of the mold is avoided.

The utility model relates to the technical field of casting sand boxes, and discloses a liquid injection port mounting structure for a reduction gearbox casting sand box, which comprises a lower sand box, an upper sand box and a liquid injection pipe I. A positioning bolt I is arranged between the lower sand box and the upper sand box, and a mounting seat is fixedly mounted at the other end, far away from the lower sand box, of the upper sand box. A mounting groove, a sliding groove, a limiting groove and a first positioning hole are formed in the inner surface of the mounting base, a limiting rod is fixedly mounted on the outer surface of the first liquid injection pipe, and a second positioning hole is formed in the outer surface of the first liquid injection pipe. According to the liquid injection opening mounting structure for the reduction gearbox casting sand box, the limiting rod is matched with the mounting groove and the sliding groove and is connected with the limiting groove in a clamped mode, the guiding and preliminary positioning effects are achieved in the mounting process, and an operator can conveniently, rapidly and accurately mount a first liquid injection pipe on the mounting base; and meanwhile, the stability of the first liquid injection pipe after installation is further enhanced, the risk that the first liquid injection pipe is loosened due to improper installation is reduced, and the installation efficiency is improved.

The invention belongs to the technical field of evanescent mode casting, and particularly discloses an evanescent mode casting automatic bottom shakeout special sand box device which comprises a sand box body used for containing an evanescent mode and shakeout and used for evanescent mode casting. The transportation frame is placed at the bottom of the sand box body and used for driving the sand box body to move; the sand shakeout component comprises two turning plates, the number of the turning plates is two, the two turning plates are oppositely arranged, the outer side ends of the turning plates are rotationally connected with the inner rod in a sleeving mode, and the turning plates are located in the leakage groove. The sliding rod is fixed to the bottom of the turning plate. The inserting rods move at the bottoms of the sliding rods through movement of the pulling plates, the sliding rods are limited through the inserting rods with different heights, and therefore the inclination angle of the turning plate in the leakage groove is limited, simple sand shakeout of the sand box body is guaranteed, the speed of dry sand falling in the leakage groove and the through groove can be adjusted and controlled, and the production efficiency is improved. And the phenomenon that dry sand with high heat is scattered on the body of a worker due to the too high sand shakeout speed is avoided.

A casting core assembly (20) has: a first ceramic piece (22) including a projecting post (26); a second ceramic piece (24) including a socket (28); and a ceramic filler material (52) between the post and the socket. In transverse section at at least one location one of the post and socket has a configuration of: three circumferentially offset radial peaks of a peak radius (RPMAX, RSMAX); and three radial troughs of a trough radius (RPMIN, RSMIN) not more than 98.0% of the peak radius.

The invention relates to the technical field of V-method casting, and discloses a sand box turnover device which comprises a first supporting and limiting mechanism, a second supporting and limiting mechanism, a rotating plate, a clamping mechanism and a transmission connecting mechanism. The second supporting and limiting mechanism is used for supporting and limiting a rotating shaft at the other end of the sand box, the first supporting and limiting mechanism can lift the rotating plate, the rotating plate is used for driving the sand box to turn over, the clamping mechanism is used for clamping the rotating shaft of the sand box, and the transmission connecting mechanism is connected to the first supporting and limiting mechanism. The transmission connection mechanism can be connected with or separated from the clamping mechanism, and the transmission connection mechanism is used for transmitting power to the clamping mechanism so as to realize clamping or loosening of the clamping mechanism. Clamping linkage is achieved synchronously through ascending of the rotating plate, loosening linkage is achieved synchronously through descending of the rotating plate, manual mounting and dismounting are not needed, and the labor intensity of workers is reduced.

The invention provides an active scraping and sweeping mechanism with a connecting rod lifting function, and relates to a scraping and sweeping structure, the active scraping and sweeping mechanism comprises two groups of movable guide frames, a hanging frame, an oil cylinder, an air cylinder, a connecting rod and a scraping and brushing scraping plate, the movable guide frames are used for conveying an upper box and a lower box, and the movable guide frames are horizontally installed on a molding section conveying frame in a rolling connection mode through rollers; the two ends of the hanging frame are connected to the two sets of movable guide frames, the driving end of an oil cylinder installed on the molding section conveying frame is connected with the middle of the hanging frame, the two sides of the hanging frame are further connected with connecting rods through connecting plates, the ends of the connecting rods are connected with one set of base frames, and the two ends of the connecting rods are rotationally connected with the connecting plates and the base frames through pin shafts respectively. The scraping brush and the scraping plate are installed on the base frame to serve as a sweeping mechanism to scrape and sweep the lower box face of the thin box, an air cylinder is further installed on the movable guide frame in a hinged mode, the driving end of the air cylinder is connected with the end of the base frame through a rotating shaft in a rotating connection mode, hanging sweeping of the box faces of the upper box and the lower box with different heights can be completed, and therefore the waste rate caused by sand padding is reduced.

The invention relates to a mould assembling method for sand mould casting, which comprises the following steps of: firstly, preparing a casting sand box, and manufacturing a casting cavity with a to-be-produced forging press bracket outline inside; secondly, pre-positioning the loam core: placing the prepared loam core in a bottom box, positioning core heads at two ends of the loam core, placing a plurality of conical loam strips on the upper surface of the loam core, and covering the loam core with a cover box; then core supports are installed, wherein the cover box is opened, the reduced height of the mud strips at all positions is measured and recorded, and the mud strips are replaced with the core supports with the same height at the same position according to the reduced height of the mud strips; according to the box closing method, due to the fact that the mud strips are arranged, the best height selection of the chaplet can be conveniently confirmed, and the situation that the molding quality is affected due to floating of the mud core is effectively prevented.