449results about "Moulding flasks" patented technology

A casting core assembly has: a first ceramic piece including a projecting post; a second ceramic piece including a socket; and a ceramic filler material 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 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 invention discloses a casting structure and method for improving box opening efficiency and an obtained casting, and belongs to the field of cast iron metallurgy, the casting structure comprises a sand core area, a casting area and the casting area, at least one hoisting hole is formed in the casting area, a hoisting through part is fixedly installed at the hoisting hole, the hoisting through part is of a through structure, and the left side and the right side of the hoisting through part are communicated with the outside; and the hoisting middle through part is filled with sand. According to the invention, sand removal is guided in the through part of the through type hoisting, comprehensive sand removal does not need to be carried out on an inner cavity of a large casting, the sand removal workload is obviously reduced, the labor intensity of casting box opening can be obviously reduced, and the production efficiency is improved.

The utility model discloses a valve body casting mold. The valve body casting mold comprises a lower mold and an anti-collision sealing mechanism, the upper mold is placed on the upper side of the lower mold; the anti-collision sealing mechanism comprises fixing seats, telescopic columns, buffering seats, contact seats, second sliding grooves and locking seats, the fixing seats are arranged on the front side and the rear side of the lower die, the buffering seats are arranged on the upper sides of the fixing seats through the telescopic ends of the telescopic columns which are evenly distributed, and the contact seats are arranged on the front side and the rear side of the upper die; according to the valve body casting mold, when a valve body is cast, elastic buffering is conducted in the vertical contact process of the upper mold and the lower mold, so that the phenomenon that the upper mold and the lower mold collide and are damaged is avoided; and meanwhile, the device can vertically move and limit the upper mold and the lower mold, the relative vertical movement phenomenon between the upper mold and the lower mold is avoided, and a balancing weight is not needed.

The invention relates to the technical field of investment casting, in particular to an anti-gravity pouring tool and method for aluminum alloy investment precision casting, and the tool comprises a bottom plate and an annular sliding rail; the annular sliding rail is mounted on the top surface of the bottom plate; a pouring hole is formed in the center of the bottom plate; a plurality of sliding blocks are installed on the annular sliding rail in a sliding mode, and each sliding block is provided with a locking structure. A stand column is vertically installed on the top of each sliding block. A transverse pressing rod is installed on each stand column, and a pressing screw is arranged at the cantilever end of each transverse pressing rod in a screwed mode. And the lower end of the pressing screw rod is used for pressing a shell placed on the bottom plate. According to the tool, rapid fixing and stable pouring of the shell are achieved, and the production efficiency is remarkably improved. Compared with a traditional sand filling pouring process, a sand box does not need to be adopted for carrying out sand filling operation, pouring can be carried out after the preheated shell is clamped and fixed through the anti-gravity pouring tool, and the pouring efficiency is greatly improved.

The invention discloses a thin film sealing and attaching device in V-method casting, and relates to the technical field of V-method casting equipment. The device comprises a base, a travelling crane, a mounting plate, a template and a moving frame, the moving frame directly faces and is movably arranged on the mounting plate, a lifting mechanism for driving the moving frame to move relative to the mounting plate is arranged on the mounting plate, the mounting plate directly faces the moving frame and is fixedly connected with a heating mechanism, and a plurality of communicating ports are formed in the bottom of the moving frame at intervals; a plurality of communicating ports are formed in the template, an air suction channel communicating with the communicating ports is formed in the moving frame, an air suction pipe communicating with the air suction channel is fixedly connected to the moving frame, the embedded frame is slidably connected to the inner wall of the moving frame, an embedded groove is embedded in the template right facing the embedded frame, and an elastic assembly for pushing the sliding block to move towards the embedded groove is arranged on the moving frame. When the movable frame is attached to the template, the elastic assembly can push the embedding frame to move, so that the embedding frame is embedded into the embedding groove, a film is further fixed, and the sealing performance of film attachment is improved.

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 discloses metal casting equipment for dumbbell casting production and processing, and relates to the technical field of metal casting equipment. Comprising a fixing plate, the bottom of the fixing plate is rotatably connected with multiple rollers, the multiple rollers are evenly distributed at the corners of the bottom of the fixing plate, the top of the fixing plate is fixedly connected with a middle plate, the top of the middle plate is fixedly connected with a top plate, the top of the top plate is provided with a square hole, and the interior of the square hole is fixedly connected with a fixing rod; the outer side of the fixing rod is slidably connected with a clamping piece. According to the metal casting equipment for dumbbell casting production and machining, a mold in the middle is clamped and fixed through the multiple clamping pieces, uniform clamping force can be provided, the mold can be kept at the accurate position and posture in the casting process, displacement or shaking caused by external force is avoided, and the production efficiency is improved. Therefore, the dimensional accuracy and the shape accuracy of the casting can be ensured, and casting defects caused by mold deviation are reduced.

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 invention discloses a high-pressure pump alloy pump shell casting system and a casting process thereof, and relates to the technical field of casting, the high-pressure pump alloy pump shell casting system comprises a base and a mounting plate, a lifting driving mechanism is arranged on the edge of the base, a sand box positioning assembly is arranged between the base and the lifting driving mechanism, and a lower swing positioning assembly is arranged at the end, close to the lifting driving mechanism, of the mounting plate; an edge connecting mechanism is arranged at the other end of the mounting plate; the sand box positioning assembly comprises a first connecting plate, a second connecting plate and a third connecting plate, the two ends of the second connecting plate are rotationally installed with the first connecting plate and the third connecting plate correspondingly, a clamping plate and a fixing plate are installed on the second connecting plate, a first L-shaped frame is connected to the clamping plate, a second L-shaped frame is connected to the fixing plate, and a box body is placed between the first L-shaped frame and the second L-shaped frame; an adjusting air cylinder is arranged between the fixing plate and the clamping plate; and rapid demolding is completed through the overturning demolding mechanism, and a casting and molding sand are separated and received.

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 invention relates to the technical field of pump shell casting, and particularly discloses an intelligent casting island for slurry pump shell production, which comprises a bearing frame, a conveying vehicle is slidably mounted on the upper surface of the bearing frame, a mounting plate is fixedly mounted on the upper surface of the conveying vehicle, a sliding assembly is slidably arranged on the upper surface of the mounting plate, and a sand box is connected above the sliding assembly. And a first electric telescopic rod is fixedly mounted on the upper surface of the conveying vehicle. According to the molding sand vibrating device, the vibrating assembly is arranged and used in cooperation with the vibrating assembly, in the up-down moving process of the lifting column, the upper end of the lifting column drives a first vibrating rod and a second vibrating rod to move up and down through connection between a first connecting base and a first lever according to the lever principle, and then molding sand in the box body is vibrated through a vibrating plate; the lower end of the lifting column can drive two arc-shaped rods arranged on the two sides of the box body to alternately knock the two sides of the box body, and then the vibrating plate is assisted to vibrate and compact molding sand in the box body.

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.

The utility model discloses a wear-resistant casting box which comprises an upper die, a lower die is arranged at the lower end of the upper die, positioning holes are upwards formed in the four corners of the upper end of the lower die in a penetrating mode, positioning pins are fixedly connected to the four corners of the lower end of the upper die, and the four positioning pins are inserted into the four positioning holes respectively. The upper die and the lower die are mutually positioned and connected through the four positioning holes and the four positioning pins, the lifting handle is designed to facilitate lifting and overturning of the upper die, the operation process is simplified, the tamping function is integrated, through linkage with the tamping pressing plate and the tamping pressing column, casting sand is effectively compacted, filling compactness is ensured, the casting quality is improved, and through the design of the heat dissipation holes, the production efficiency is improved. The elastic telescopic sliding blocks are combined with the balls, friction and abrasion between the positioning pins and the positioning holes in the using process are reduced, the service life of the die is prolonged, the pushing springs provide pre-tightening force, it is ensured that the balls make close contact with the inner walls of the positioning holes, and abrasion is further reduced.

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 discloses a sand mold casting mold closing positioning device which comprises a box body, a lower box sleeve, an upper box sleeve, a sleeve and a positioning pin, and the box body comprises an upper sand mold and a lower sand mold; the lower box sleeve is arranged on the lower sand mold, and a first sand hanging groove is formed in the lower box sleeve; the upper box sleeve is arranged on the upper sand mold, and a second sand hanging groove is formed in the upper box sleeve; the sleeve is arranged on the upper sand mold, and the sleeve is slidably arranged on the upper box sleeve in a sleeving manner; one end of the positioning pin is inserted into the lower box sleeve, and the other end of the positioning pin is inserted into the sleeve. Therefore, the sand shakeout device is not easy to damage during sand shakeout, and can be suitable for sand molds and sand cores with different heights, so that the sand mold casting cost is reduced.

The utility model discloses a special fixture for a wax tree for casting small parts by a lost wax method, which comprises a base part, a wax rod fixing unit, a rotating unit and a tightening unit, the base part further comprises a base, a base chute is arranged on the base, and the wax rod fixing unit is connected onto the base chute; the base is further connected with a hinge, and the hinge is connected with a movable bottom plate; a rotating unit is mounted on the movable bottom plate; the rotating unit further comprises a rotating top cover, and a top cover internal gear is arranged in the rotating top cover. The rotary top cover can rotate along with the gear in the top cover; a clamping unit is further installed over the rotating unit. The clamping unit further comprises a matching straight gear, a clamping claw installation groove is formed in the matching straight gear, a clamping claw is installed on the clamping claw installation groove, and the clamping claw can move along the inner contour line of the clamping claw installation groove.

The utility model discloses a V-method casting sand box overturning frame which comprises a base and supporting frames, the tops of the two ends of the base are arranged in a square shape, the supporting frames are fixedly connected to the top of the base and are symmetrically distributed, the V-method casting sand box overturning frame further comprises overturning assemblies and lifting assemblies, the overturning assemblies are arranged on the supporting frames, and the lifting assemblies are arranged on the supporting frames. The lifting assembly is arranged between the top of the base and the containing plate. The utility model belongs to the technical field of casting equipment, and particularly relates to a V-process casting sand box turnover frame which solves the problem that a V-process casting sand box with only one width can be turned over, so that the V-process casting sand box turnover frame has certain limitation in use.

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 relates to a mould structure capable of preventing untight mould closing and casting a shot box. The mould structure is characterized by comprising a mould plate module and a sand box module, the lifting division bars are arranged on the template units, a gap is reserved between the bottom end of the sand box and molding sand during molding sand molding, and the molding sand can directly fall on the template units, so that the end corner positions of the sand box can be filled with compact molding sand, the situation that the molding sand is loose is avoided, and in the subsequent box closing process, the molding sand is not prone to falling off. According to the molding sand box closing device, redundant overflowing molding sand is scraped by the scraper, and then box closing is performed, so that the sealing effect at the box closing position of the molding sand box can be ensured, and the box shooting condition caused by loose molding sand end corner positions is also reduced.