CN112974737A - Sand box for casting - Google Patents
Sand box for casting Download PDFInfo
- Publication number
- CN112974737A CN112974737A CN202110158925.9A CN202110158925A CN112974737A CN 112974737 A CN112974737 A CN 112974737A CN 202110158925 A CN202110158925 A CN 202110158925A CN 112974737 A CN112974737 A CN 112974737A
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- Prior art keywords
- fixedly connected
- wall
- sand box
- cavity
- rod
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- 244000035744 Hura crepitans Species 0.000 title claims abstract description 50
- 238000005266 casting Methods 0.000 title claims abstract description 29
- 239000003110 molding sand Substances 0.000 claims abstract description 27
- 238000003860 storage Methods 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 43
- 230000007246 mechanism Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 10
- 206010066054 Dysmorphism Diseases 0.000 claims description 7
- 230000005389 magnetism Effects 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 6
- 230000002940 repellent Effects 0.000 claims description 5
- 239000005871 repellent Substances 0.000 claims description 5
- 241000252254 Catostomidae Species 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 241000283984 Rodentia Species 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010114 lost-foam casting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/01—Flasks; Accessories therefor for vacuum-sealed moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention discloses a casting sand box, which comprises a sand box body, wherein a plurality of air exhaust ports are formed in the side wall of the sand box body, a plurality of support rods are fixedly connected to the inner wall of the sand box body, slide blocks are arranged in the support rods in a sliding manner, movable rods are fixedly connected to the slide blocks, expansion blocks are fixedly connected to the movable rods, a support frame is fixedly connected to the inner part of the sand box body, connecting rods are fixedly connected to two ends of the support frame, and molding sand is arranged in the sand box body; compared with the prior art, the air pressure cavity is extruded through the memory metal plate, so that air in the air pressure cavity is conveyed into the support rod through the air conveying pipe, meanwhile, the memory metal plate can generate inward compression force on the elastic rod, the air in the air storage cavity can be conveyed into the support rod through the air conveying pipe, the movable rod moves outwards, the expansion block abuts against the bottom of the support frame, and the situation that the support frame moves due to the fact that gaps among molding sand are reduced, a foam mold moves, and the situation that the shape of the detail part of a casting is incomplete easily caused is avoided.
Description
Technical Field
The invention relates to the technical field of casting equipment, in particular to a sand box for casting.
Background
The sand box is a key device in the lost foam casting production and is divided into a complex sand box, a simple sand box and the like according to different purposes. The complex sand box can achieve the most reasonable negative pressure field when castings are vacuumized in the sand box, so that the full-box castings can be well formed without defects, the simple sand box can be adopted for some castings with simple shapes and low requirement on uniformity of the negative pressure field during pouring, the standard reaching rate of the castings is low when the casting sand box is used for casting the castings at present, the main reason is that in the casting manufacturing process, the attaching degree of molding sand and a foam model is not high, particularly for the bending part, the groove part, the hole part and the like of the castings, after the casting sand is pumped to enable the interior to be in a vacuum state, gaps among the molding sand are reduced, and incomplete modeling of the detail parts of the castings can be caused.
Disclosure of Invention
The present invention has been made to solve the above problems occurring in the prior art, and an object of the present invention is to provide a sand box for casting.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a sand box for casting, includes the sand box body, be equipped with a plurality of extraction openings on the sand box body lateral wall, can take out the inside gas of sand box through the extraction opening through air exhaust device, make inside be in vacuum state, a plurality of bracing pieces of fixedly connected with on the sand box body inner wall, the inside slip of bracing piece is equipped with the slider, fixedly connected with movable rod on the slider, fixedly connected with inflation piece on the movable rod, the inside fixedly connected with support frame of sand box body, support frame both ends fixedly connected with connecting rod, this internal molding sand that is equipped with of sand box.
Preferably, a limit groove is formed in the side wall of the movable rod, a vibration spring is fixedly connected to the inner wall of the limit groove, an extrusion ball is fixedly connected to the vibration spring, a plurality of elastic balls are fixedly connected to the inner wall of the support rod, the extrusion ball can extrude the elastic balls on the inner wall of the support rod during movement of the movable rod, so that the movable rod can vibrate during movement, a plurality of gas transmission mechanisms are arranged inside the support rod, each gas transmission mechanism comprises a gas pressure cavity, a memory metal plate is arranged on the surface of the gas pressure cavity, a pair of elastic rods is fixedly connected to the inner wall of the memory metal plate, a swing block is fixedly connected to one end of each elastic rod, the swing block is rotatably arranged on the inner wall of the gas pressure cavity, an extrusion rod is fixedly connected to one end of the swing block, the extrusion rod is arc-shaped, a compression block is fixedly connected to one end of the extrusion rod, and, the extrusion intracavity is equipped with the elastic membrane, and compresses piece one end and support on the elastic membrane surface, a pair of gas-supply pipe has been seted up in the bracing piece, atmospheric pressure chamber and gas-supply pipe fixed connection, the gas storage chamber has been seted up to atmospheric pressure chamber both sides, and the molding sand can produce the extrusion to memory metal sheet, makes the gas of atmospheric pressure intracavity portion carry to the bracing piece inside through the gas-supply pipe, and memory metal sheet can produce the power of inside compression to the elastic rod simultaneously, makes the swing piece rotate, can make the stripper bar remove, makes the compression piece produce the extrusion to the elastic membrane, will extrude the intracavity portion gas transport to the arc intracavity.
Preferably, the gas storage intracavity fixed connection springboard, gas storage intracavity internal rotation is equipped with the pivot, pivot both ends fixedly connected with dysmorphism piece, the arc wall has been seted up to extrusion chamber one side, and the arc wall internalization is equipped with the arc pole, gas storage chamber and gas-supply pipe fixed connection, the arc pole removes and to make the dysmorphism piece rotate, produces the extrusion to the springboard, can carry the gas of gas storage intracavity portion to the bracing piece inside through the gas-supply pipe.
Preferably, pivot and arc pole surface all are equipped with a plurality of rodents, and the rodent intermeshing on the rodent on the arc pole and the pivot outer wall, and the arc pole removes, and the rodent through intermeshing can drive the pivot and rotate.
Preferably, an expansion cavity is arranged inside the expansion block, a fixed plate is fixedly connected in the expansion cavity, the fixed plate is arc-shaped, a plurality of transmission mechanisms are arranged on the fixed plate, each transmission mechanism comprises a movable cavity, the movable cavity is positioned between the fixed plate and the inner wall of the expansion cavity, an exhaust pipe is arranged at the bottom of the movable cavity and is arranged inside the fixed plate, a movable ball is slidably arranged inside the movable cavity, a semicircular groove is formed at the bottom of the movable ball, an articulated frame is articulated on the inner wall of the movable cavity, an ejector rod is fixedly connected at one end of the articulated frame, a pair of reset springs is fixedly connected on the inner wall of the movable cavity, one end of each reset spring is fixedly connected on the articulated frame, a vibration block is fixedly connected at the top of the inner wall of the movable cavity, the movable ball pops out instantly under, the hinged frame can reset under the action of the reset spring, and the ejector rod can extrude the bottom of the vibrating block.
Preferably, a plurality of connecting blocks of fixedly connected with on the vibrating mass inner wall, and fixedly connected with connecting spring on the connecting block, connecting spring one end fixedly connected with vibration ball, vibration ball and inflation intracavity wall have repellent magnetism, and repellent magnetism can drive the vibration ball and make reciprocating motion between vibration ball and the inflation piece inner wall, and connecting spring can enlarge the vibration, makes the movable ball continuously strike inflation intracavity wall, makes inflation piece surface can produce the vibration, can make the inside molding sand of support frame lay more evenly, avoids appearing the molding sand and the casting the flexion, slot part and hole portion etc. result laminating degree not high.
Preferably, activity chamber bottom is the arc, the special-shaped chamber has been seted up to activity intracavity portion, special-shaped chamber one side is the rubber material, a pair of spacing groove has been seted up to activity chamber bottom symmetry, and a plurality of sucking discs of fixedly connected with on the spacing groove, and after deformation took place in the special-shaped chamber, the sucking disc position can take place the skew, makes the adsorption affinity reduce.
Preferably, blast pipe both ends fixedly connected with expansion pipe, the expansion pipe is seted up in the fixed plate, be equipped with the rubber layer between expansion pipe and the dysmorphism chamber, and the rubber in situ is fixed and is equipped with a plurality of extrusion pieces, and the inside gas of expansion chamber can be carried to the activity inslot through the blast pipe, has partly gaseous reposition of redundant personnel to expansion pipe simultaneously, can make expansion pipe deformation, makes the extrusion piece produce the extrusion to the dysmorphism chamber.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the memory metal plate is extruded, so that gas in the air pressure cavity is conveyed into the support rod through the gas pipe, meanwhile, the memory metal plate can generate inward compression force on the elastic rod, the swinging block can rotate, the extrusion rod can move, the compression block can extrude the elastic membrane, the gas in the extrusion cavity is conveyed into the arc-shaped cavity, the arc-shaped rod is driven to move, the rotating shaft is driven to rotate, the special-shaped block can rotate, the elastic plate is extruded, the gas in the gas storage cavity can be conveyed into the support rod through the gas pipe, the sliding block is driven to slide, the movable rod moves outwards, the expansion block is abutted against the bottom of the support frame, the situation that the support frame moves due to the reduction of the gap of molding sand, the foam mold moves, and incomplete modeling of the detail part of a casting is easily caused is avoided;
2. according to the invention, the extrusion balls on the surface of the movable rod can extrude the elastic balls on the inner wall of the support rod, so that the movable rod can vibrate in the moving process to drive the expansion block to knock the support frame, and the molding sand on the surface of the foam mold can be more uniformly laid;
3. according to the invention, gas in the expansion cavity can be conveyed into the movable groove through the exhaust pipe, and meanwhile, a part of gas is shunted to the expansion pipe, so that the expansion pipe can be deformed, the extrusion block can extrude the special-shaped cavity, the special-shaped cavity is deformed, the position of the sucking disc is deviated, the adsorption force is reduced, the movable ball can be instantly popped out under the action of air pressure, an upward acting force is generated on the hinged frame, the hinged frame can be reset under the action of the reset spring, the ejector rod can extrude the bottom of the vibration block, the vibration ball in the vibration block is vibrated, the inner wall of the expansion cavity is knocked, the vibration ball can be driven to do reciprocating motion through the repulsive magnetism between the movable ball and the outer wall of the expansion block, the inner wall of the expansion cavity is knocked continuously, vibration can be transmitted to the support;
4. according to the invention, the moving range of the vibrating ball can be enlarged through the connecting spring, so that the vibrating ball continuously strikes the inner wall of the expansion cavity, the surface of the expansion block can vibrate, the vibration can be transmitted to the support frame, the molding sand in the support frame can be more uniformly laid, and the situation that the fitting degree of the molding sand and structures such as a bending part, a groove part and a hole part of a casting is not high is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of the present invention;
FIG. 3 is a schematic view of a support pole of the present invention in partial cross-section;
FIG. 4 is an enlarged view of a portion of FIG. 3 according to the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at B according to the present invention;
FIG. 6 is a schematic view of an expansion block of the present invention;
FIG. 7 is a schematic view, partly in section, of the invention at C in FIG. 6;
FIG. 8 is a schematic view, partly in section, taken at D in FIG. 7, of the present invention;
FIG. 9 is a schematic view of a vibrating mass according to the present invention;
in the figure: 1. a flask body; 2. molding sand; 3. a gas delivery mechanism; 4. a transmission mechanism; 11. an air extraction opening; 12. a support bar; 121. a movable rod; 122. a vibration spring; 123. extruding the ball; 124. a slider; 13. a support frame; 131. a connecting rod; 14. an expansion block; 141. an expansion chamber; 142. a fixing plate; 31. a pneumatic chamber; 311. a swing block; 32. a gas delivery pipe; 33. a gas storage cavity; 331. an elastic plate; 34. an extrusion chamber; 35. an extrusion stem; 36. a memory metal plate; 37. a shaped block; 38. a rotating shaft; 39. an arcuate bar; 41. an exhaust pipe; 42. a movable cavity; 43. vibrating the block; 431. a connecting spring; 432. vibrating the ball; 44. a hinged frame; 441. a return spring; 442. a top rod; 45. a movable ball; 46. a profiled cavity; 47. a suction cup; 48. an expansion tube; 481. and extruding the block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, the present invention provides a technical solution: the utility model provides a sand box for casting, including sand box body 1, be equipped with a plurality of extraction openings 11 on the 1 lateral wall of sand box body, can take out the inside gas of sand box through extraction opening 11 through air exhaust device, make inside be in the vacuum state, a plurality of bracing pieces of fixedly connected with 12 on the 1 inner wall of sand box body, the inside slip of bracing piece 12 is equipped with slider 124, fixedly connected with movable rod 121 on the slider 124, fixedly connected with inflation piece 14 on the movable rod 121, the inside fixedly connected with support frame 13 of sand box body 1, support frame 13 both ends fixedly connected with connecting rod 131, be equipped with molding sand 2 in the sand box body 1.
The side wall of the movable rod 121 is provided with a limit groove, the inner wall of the limit groove is fixedly connected with a vibration spring 122, the vibration spring 122 is fixedly connected with an extrusion ball 123, the inner wall of the support rod 12 is fixedly connected with a plurality of elastic balls, the extrusion ball 123 of the movable rod 121 can extrude with the elastic balls on the inner wall of the support rod 12 in the moving process, so that the movable rod 121 can vibrate in the moving process, a plurality of gas transmission mechanisms 3 are arranged inside the support rod 12, each gas transmission mechanism 3 comprises a gas pressure cavity 31, a memory metal plate 36 is arranged on the surface of the gas pressure cavity 31, a pair of elastic rods are fixedly connected on the inner wall of the memory metal plate 36, one end of each elastic rod is fixedly connected with a swinging block 311, the swinging block 311 is rotatably arranged on the inner wall of the gas pressure cavity 31, one end of the swinging block 311 is fixedly connected with an extrusion rod 35, the extrusion rod 35 is arc-shaped, be equipped with the elastic membrane in the extrusion chamber 34, and compression piece one end supports on the elastic membrane surface, a pair of gas-supply pipe 32 has been seted up in the bracing piece 12, gas storage chamber 33 has been seted up to gas-supply chamber 31 and gas-supply pipe 32 fixed connection, molding sand 2 can produce the extrusion to memory metal sheet 36, make the inside gas in gas-supply chamber 31 carry to bracing piece 12 inside through gas-supply pipe 32, memory metal sheet 36 can produce the power of inside compression to the elastic rod simultaneously, make swing piece 311 rotate, can make the extrusion pole 35 remove, make the compression piece produce the extrusion to the elastic membrane, with the inside gas-supply of extrusion chamber 34 to the arc intracavity.
The surfaces of the rotating shaft 38 and the arc-shaped rod 39 are provided with a plurality of engaging teeth, the engaging teeth on the arc-shaped rod 39 are meshed with the engaging teeth on the outer wall of the rotating shaft 38, the arc-shaped rod 39 moves, and the rotating shaft 38 can be driven to rotate through the meshed engaging teeth.
An expansion cavity 141 is arranged in the expansion block 14, a fixing plate 142 is fixedly connected in the expansion cavity 141, the fixing plate 142 is arc-shaped, a plurality of transmission mechanisms 4 are arranged on the fixing plate 142, each transmission mechanism 4 comprises a movable cavity 42, the movable cavity 42 is positioned between the fixing plate 142 and the inner wall of the expansion cavity 141, an exhaust pipe 41 is arranged at the bottom of the movable cavity 42, the exhaust pipe 41 is arranged in the fixing plate 142, a movable ball 45 is arranged in the movable cavity 42 in a sliding manner, a semicircular groove is formed at the bottom of the movable ball 45, a hinged frame 44 is hinged on the inner wall of the movable cavity 42, one end of the hinged frame 44 is fixedly connected with an ejector rod 442, a pair of return springs 441 are fixedly connected on the inner wall of the movable cavity 42, one end of each return spring 441 is fixedly connected to the hinged frame 44, a vibration block 43 is fixedly connected on the top of the inner wall of the movable cavity 42, the, the top rod 442 can be pressed against the bottom of the vibration block 43.
A plurality of connecting blocks of fixedly connected with on the inner wall of vibrating mass 43, and fixedly connected with connecting spring 431 on the connecting block, connecting spring 431 one end fixedly connected with vibration ball 432, vibration ball 432 has repellent magnetism with inflation chamber 141 inner wall, repellent magnetism can drive vibration ball 432 and make reciprocating motion between the expansion block 14 inner wall between vibration ball 432 and the expansion block, connecting spring 431 can enlarge the vibration, make movable ball 45 continuously strike inflation chamber 141 inner wall, make the 14 surfaces of inflation piece can produce the vibration, can make the inside molding sand 2 of support frame 13 lay more evenly, avoid appearing the flexion of molding sand 2 and foundry goods, the result laminating degree such as slot part and hole portion is not high.
The bottom of the movable cavity 42 is arc-shaped, the special-shaped cavity 46 is formed in the movable cavity 42, one side of the special-shaped cavity 46 is made of rubber, a pair of limiting grooves are symmetrically formed in the bottom of the movable cavity 42, a plurality of suckers 47 are fixedly connected to the limiting grooves, and after the special-shaped cavity 46 deforms, the suckers 47 can shift, so that the adsorption force is reduced.
The expansion pipe 48 is fixedly connected to the two ends of the exhaust pipe 41, the expansion pipe 48 is arranged in the fixing plate 142, a rubber layer is arranged between the expansion pipe 48 and the special-shaped cavity 46, a plurality of extrusion blocks 481 are fixedly arranged in the rubber layer, gas in the expansion cavity 141 can be conveyed to the movable groove through the exhaust pipe 41, meanwhile, part of gas is shunted to the expansion pipe 48, the expansion pipe 48 can be deformed, and the extrusion blocks 481 extrude the special-shaped cavity 46.
The working principle is as follows: when casting a casting by a sand box, a foam mold is placed in the sand box and is placed on the support frame 13, then molding sand 2 is slowly poured into the sand box, the sand box can be driven to slightly shake by an external instrument, large gaps between the molding sand 2 are avoided, the cast casting is incomplete, then air in the sand box can be pumped out through the air pumping port 11 by the air pumping device, so that the inside is in a vacuum state, in the process of air pumping, the gaps between the molding sand 2 are gradually reduced, the surface of the expansion block 14 is gradually expanded, the molding sand 2 can extrude the memory metal plate 36, the air in the air pressure cavity 31 is conveyed into the support rod 12 through the air conveying pipe 32, meanwhile, the memory metal plate 36 can generate inward compression force on the elastic rod, the swing block 311 rotates, the extrusion rod 35 can move, and the compression block can extrude the elastic membrane, the gas in the extrusion cavity 34 is conveyed into the arc-shaped cavity to drive the arc-shaped rod 39 to move, the rotating shaft 38 can be driven to rotate through meshed rodents, the special-shaped block 37 can be driven to rotate, the elastic plate 331 is extruded, the gas in the gas storage cavity 33 can be conveyed into the supporting rod 12 through the gas conveying pipe 32, the sliding block 124 is driven to slide, the extrusion ball 123 on the surface of the movable rod 121 can be extruded with the elastic ball on the inner wall of the supporting rod 12, the movable rod 121 can vibrate in the moving process, the expansion block 14 is driven to knock the supporting frame 13, the molding sand 2 on the surface of the foam mold can be laid more uniformly, the position of the supporting frame 13 can be limited, the situation that the supporting frame 13 moves due to the reduction of the clearance of the molding sand 2 is avoided, the foam mold moves, the incomplete modeling of the detail part of a casting is easy to happen, and the gas in the, filling the vacant space between the molding sand 2 and the air pressure is reduced, in the expansion process of the expansion block 14, the air in the expansion cavity 141 can be conveyed into the movable groove through the exhaust pipe 41, meanwhile, a part of the air is shunted to the expansion pipe 48, the expansion pipe 48 can be deformed, the extrusion block 481 can extrude the special-shaped cavity 46, the special-shaped cavity 46 is deformed, the position of the sucking disc 47 can be deviated, the adsorption force is reduced, the movable ball 45 can be instantly popped out under the action of the air pressure, an upward acting force is generated on the hinged frame 44, the hinged frame 44 can be reset under the action of the reset spring 441, the push rod 442 can extrude the bottom of the vibration block 43, the vibration ball 432 in the vibration block 43 is vibrated, the inner wall of the expansion cavity 141 is knocked, the repulsive magnetism between the vibration ball 432 and the outer wall of the expansion block 14 can drive the vibration ball 432 to reciprocate, and the connecting spring 431 can amplify the vibration, make vibration ball 432 continuously strike inflation chamber 141 inner wall, make inflation piece 14 surface can produce the vibration, can make the inside molding sand 2 of support frame 13 lay more evenly, avoid appearing molding sand 2 and casting's flexion, slot part and hole part isotructure laminating degree not high.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a sand box for casting, includes sand box body (1), its characterized in that: the sand box comprises a sand box body (1) and is characterized in that a plurality of air extraction openings (11) are formed in the side wall of the sand box body (1), a plurality of support rods (12) are fixedly connected to the inner wall of the sand box body (1), a slide block 124 is arranged in the support rods (12) in a sliding mode, a movable rod 121 is fixedly connected to the slide block (124), an expansion block 14 is fixedly connected to the movable rod 121, a support frame 13 is fixedly connected to the inner portion of the sand box body (1), connecting rods (131) are fixedly connected to the two ends of the support frame (13), and molding sand (2) is arranged in the sand.
2. A foundry sand box according to claim 1, wherein: the movable rod (121) is characterized in that a limiting groove is formed in the side wall of the movable rod (121), a vibration spring (122) is fixedly connected to the inner wall of the limiting groove, an extrusion ball (123) is fixedly connected to the vibration spring (122), a plurality of elastic balls are fixedly connected to the inner wall of the support rod (12), a plurality of gas transmission mechanisms (3) are arranged inside the support rod (12), each gas transmission mechanism (3) comprises a gas pressure cavity (31), a memory metal plate (36) is arranged on the surface of the gas pressure cavity (31), a pair of elastic rods are fixedly connected to the inner wall of the memory metal plate (36), a swinging block (311) is fixedly connected to one end of each elastic rod, the swinging block (311) is rotatably arranged on the inner wall of the gas pressure cavity (31), an extrusion rod (35) is fixedly connected to one end of each swinging block (311), the extrusion rod (35) is arc-shaped, and a compression, a pair of extrusion chamber (34) has been seted up on atmospheric pressure chamber (31) inner wall, be equipped with the elastic membrane in extrusion chamber (34), and compression piece one end supports on the elastic membrane surface, a pair of gas-supply pipe (32) have been seted up in bracing piece (12), atmospheric pressure chamber (31) and gas-supply pipe (32) fixed connection, gas storage chamber (33) have been seted up to atmospheric pressure chamber (31) both sides.
3. A foundry sand box according to claim 2, wherein: gas storage chamber (33) internal fixation is connected with elastic plate (331), gas storage chamber (33) internal rotation is equipped with pivot (38), pivot (38) both ends fixedly connected with dysmorphism piece (37), the arc wall has been seted up to extrusion chamber (34) one side, and the arc wall internalization is equipped with arc pole (39), gas storage chamber (33) and gas-supply pipe (32) fixed connection.
4. A foundry sand box according to claim 3, wherein: the surfaces of the rotating shaft (38) and the arc-shaped rod (39) are provided with a plurality of engaging teeth, and the engaging teeth on the arc-shaped rod (39) are meshed with the engaging teeth on the outer wall of the rotating shaft (38).
5. A foundry sand box according to claim 1, wherein: the expansion block (14) is internally provided with an expansion cavity (141), the expansion cavity (141) is internally and fixedly connected with a fixing plate (142), the fixing plate (142) is arc-shaped, the fixing plate (142) is provided with a plurality of transmission mechanisms (4), each transmission mechanism (4) comprises a movable cavity (42), each movable cavity (42) is positioned between the fixing plate (142) and the inner wall of the expansion cavity (141), the bottom of each movable cavity (42) is provided with an exhaust pipe (41), each exhaust pipe (41) is arranged inside the corresponding fixing plate (142), a movable ball (45) is arranged inside each movable cavity (42) in a sliding manner, the bottom of each movable ball (45) is provided with a semicircular groove, the inner wall of each movable cavity (42) is hinged with a hinged frame (44), one end of each hinged frame (44) is fixedly connected with an ejector rod (442), the inner wall of each movable cavity (42) is fixedly connected with, one end of the return spring (441) is fixedly connected to the hinged frame (44), and the top of the inner wall of the movable cavity (42) is fixedly connected with a vibrating block (43).
6. A foundry sand box according to claim 5, wherein: a plurality of connecting blocks of fixedly connected with on vibrating mass (43) inner wall, and fixedly connected with connecting spring (431) on the connecting block, connecting spring (431) one end fixedly connected with vibration ball (432), vibration ball (432) have repellent magnetism with inflation chamber (141) inner wall.
7. A foundry sand box according to claim 5, wherein: the improved vacuum cleaner is characterized in that the bottom of the movable cavity (42) is arc-shaped, the movable cavity (42) is internally provided with a special-shaped cavity (46), one side of the special-shaped cavity (46) is made of rubber, a pair of limiting grooves are symmetrically formed in the bottom of the movable cavity (42), and the limiting grooves are fixedly connected with a plurality of suckers (47).
8. A foundry sand box according to claim 5, wherein: expansion pipes (48) are fixedly connected to two ends of the exhaust pipe (41), the expansion pipes (48) are arranged in the fixing plate (142), a rubber layer is arranged between the expansion pipes (48) and the special-shaped cavity (46), and a plurality of extrusion blocks (481) are fixedly arranged in the rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110158925.9A CN112974737A (en) | 2021-02-05 | 2021-02-05 | Sand box for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110158925.9A CN112974737A (en) | 2021-02-05 | 2021-02-05 | Sand box for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112974737A true CN112974737A (en) | 2021-06-18 |
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ID=76347371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110158925.9A Pending CN112974737A (en) | 2021-02-05 | 2021-02-05 | Sand box for casting |
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| Country | Link |
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| CN (1) | CN112974737A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363132A (en) * | 2016-11-18 | 2017-02-01 | 绥阳县海红铸造有限责任公司 | Lost-foam casting device |
| CN106424563A (en) * | 2016-11-18 | 2017-02-22 | 绥阳县海红铸造有限责任公司 | Lost-form casting method |
| CN110280720A (en) * | 2019-07-30 | 2019-09-27 | 张翔 | A kind of lost-foam casting method |
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2021
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363132A (en) * | 2016-11-18 | 2017-02-01 | 绥阳县海红铸造有限责任公司 | Lost-foam casting device |
| CN106424563A (en) * | 2016-11-18 | 2017-02-22 | 绥阳县海红铸造有限责任公司 | Lost-form casting method |
| CN110280720A (en) * | 2019-07-30 | 2019-09-27 | 张翔 | A kind of lost-foam casting method |
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Application publication date: 20210618 |