CN114273620A - Sand box mechanism for V-method sand burying of low-pressure casting of aluminum alloy castings - Google Patents
Sand box mechanism for V-method sand burying of low-pressure casting of aluminum alloy castings Download PDFInfo
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- CN114273620A CN114273620A CN202111635487.7A CN202111635487A CN114273620A CN 114273620 A CN114273620 A CN 114273620A CN 202111635487 A CN202111635487 A CN 202111635487A CN 114273620 A CN114273620 A CN 114273620A
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Abstract
The invention discloses a sand box mechanism for V-method sand burying in low-pressure casting of aluminum alloy castings, which relates to the technical field of low-pressure casting and comprises a sand box base and a negative-pressure sand box arranged on the sand box base, wherein two sides of the sand box base are respectively provided with a dry sand collapsing part; the dry sand collapsing part can rotate along the side edge of the sand box base to drive dry sand to collapse, and the dry sand collapsing part is respectively arranged on the two side edges of the sand box base; when taking out the foundry goods when the casting shaping, separation negative pressure sand box, then the side of collapsing the portion and rotate in step along the sand box base through two dry sand and burst with the drive dry sand for the dry sand is evenly broken comprehensively, does not need staff's assistance to clear up, prevents to cause the damage to the foundry goods, is showing improvement work efficiency.
Description
Technical Field
The invention relates to the technical field of low-pressure casting, in particular to a sand box mechanism for V-method sand burying in low-pressure casting of aluminum alloy castings.
Background
Sand casting refers to a casting process that produces castings in sand, and castings of steel, iron, and most nonferrous alloys can be obtained using sand casting processes. Because the molding material used by sand casting is cheap and easy to obtain, the casting mould is simple and convenient to manufacture, and can adapt to single-piece production, batch production and mass production of castings, the casting mould is a basic process in casting production for a long time, aluminum alloy is a non-ferrous metal structural material which is most widely applied in industry, has the characteristics of low density, high strength, good plasticity, corrosion resistance, excellent electric and thermal conductivity and the like, plays a very important role in the industries of automobiles, moulds, mechanical equipment, ships, aerospace, national defense and military industry and the like, is one of main structural materials for realizing industrial lightweight, and currently, ultra-large aluminum alloy castings with higher requirements on air tightness and mechanical properties, such as missile shells, unmanned planes and the like, are usually cast by adopting a resin sand and clay sand low-pressure casting process, and compared with the traditional sand casting, the castings have better quality and excellent air tightness and mechanical properties, compared with metal type, the cost is low, and the period is short.
For example, the invention patent of the invention named as 'a high-performance aluminum alloy casting dieless forming casting method' is that the applicant team previously applies for the publication number of CN111408690A, the application publication date is number of 07-14.2020, the specific method is that the three-dimensional graph of the product is preprocessed, the fine characteristics which can not be formed by casting are deleted, after the machining allowance is increased on the machining surface, the model is wholly shrunk, the pouring system is designed according to the structural characteristics of the product and the drawing of the three-dimensional graph of the pouring system is completed, the casting process graph of the product is obtained, and then the three-dimensional model of the sand mould shell is drawn by using three-dimensional software; (2) printing a drawn casting sand mold by using a 3D printer, cleaning accumulated sand, edges, burrs and the like in a printed sand mold cavity, dip-coating a coating on the sand mold, and drying the sand mold in an oven after dip-coating; (3) molding the baked sand mold to obtain a casting shell mold; laying a layer of PE film on a bottom plate, adsorbing the edge of the film on the periphery of a vacuum sand box by using a magnet, placing a shell mold on the bottom plate, enabling the bottom of the shell mold to be protruded and buckled in a hole on the bottom plate, and buckling and locking the vacuum box on the bottom plate; (4) adding dry quartz sand into a vacuum sand box until the vacuum sand box is full, scraping a sand surface, covering a layer of PE film, and adsorbing the edge of the film on the periphery of the vacuum sand box by using a magnet; (5) inserting a vacuum tube on a vacuumizing interface of a vacuum sand box, vacuumizing the vacuum sand box, (6) transferring the treated aluminum liquid into a crucible, closing a furnace cover of a heat preservation furnace, and putting the heat preservation furnace into a pit; (7) transferring the pouring sand mold subjected to the V-method quick box burying molding to a pit, and completing butt joint of a liquid lifting pipe and a pouring gate on the sand mold; (8) sending compressed air into the heat preservation furnace through a compressed air interface, applying pressure to aluminum liquid in the heat preservation furnace to finish pouring operation, and closing the compressed air; (9) and after the casting is finished, the negative pressure of the vacuum sand box is removed, the dry sand is automatically dispersed, and after the casting is cooled, the 3D printing shell mould on the surface of the casting is removed to obtain the casting blank.
Like the above application, in the prior art of low-pressure casting and molding of sand burying by the V method, when a casting is taken out, the operation is performed by removing the negative pressure of the vacuum sand box, the vacuum sand box is taken out, and the dry sand in the vacuum sand box is automatically dispersed.
Disclosure of Invention
The invention aims to provide a sand box mechanism for V-method sand burying in low-pressure casting of aluminum alloy castings, which aims to overcome the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme: a sand box mechanism for V-method sand burying of aluminum alloy castings through low-pressure casting comprises a sand box base and a negative-pressure sand box arranged on the sand box base, wherein two dry sand collapsing parts are respectively arranged on two side edges of the sand box base; the dry sand collapsing part can rotate along the side edge of the base of the sand box to drive dry sand to collapse.
As a further description of the above technical solution: the sand box base is provided with a bearing platform, and the dry sand scattering part is arranged on the bearing platform.
As a further description of the above technical solution: the length and the width of the spliced plummer and the dry sand scattering part are equal to those of the inner cavity of the negative pressure sand box.
As a further description of the above technical solution: an adjusting mechanism and a driving unit are arranged in the bearing table; the adjusting mechanism is in transmission connection with the two dry sand scattering parts, and the adjusting mechanism receives the driving of the driving unit and drives the two dry sand scattering parts to rotate synchronously for adjustment.
As a further description of the above technical solution: the adjusting mechanisms are arranged in a plurality, and the driving unit synchronously drives the adjusting mechanisms to synchronously drive the dry sand collapsing parts to synchronously rotate and adjust.
As a further description of the above technical solution: the sand box base is located the regional outside elasticity over-and-under type of dry sand scattering portion projection sets up the sand box and counterpoints the subassembly, the sand box is counterpointed the subassembly and is had two operating condition: the sand box aligning component is embedded into the sand box base in the second working state.
As a further description of the above technical solution: and the negative pressure sand box is provided with an alignment connecting piece which is matched with the sand box alignment assembly for limiting connection.
As a further description of the above technical solution: when the negative-pressure sand box is assembled, the sand box aligning assembly is switched from a first working state to a second working state under the action of the gravity of the negative-pressure sand box; when the negative pressure sand box is dismounted, the sand box aligning assembly is switched from the second working state to the first working state under the elastic action.
As a further description of the above technical solution: the auxiliary support assembly comprises a transmission connecting piece and a support mechanism; the transmission connecting piece receives the driving of the sand box aligning component to drive the supporting mechanism to support the dry sand collapsing part.
As a further description of the above technical solution: when the sand box aligning component is switched from the first working state to the second working state, the transmission component receives the driving of the sand box aligning component to drive the supporting mechanism to support the dry sand collapsing part.
In the technical scheme, the sand box mechanism for V-method sand burying in low-pressure casting of aluminum alloy castings, provided by the invention, is characterized in that two dry sand collapsing parts are respectively arranged on two side edges of a base of the sand box; when taking out the foundry goods when the casting shaping, separation negative pressure sand box, then the side of collapsing the portion and rotate in step along the sand box base through two dry sand and burst with the drive dry sand for the dry sand is evenly broken comprehensively, does not need staff's assistance to clear up, prevents to cause the damage to the foundry goods, is showing improvement work efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic overall structure diagram of a sand box mechanism for V-process sand burying in low-pressure casting of aluminum alloy castings according to an embodiment of the present invention;
FIG. 2 is a schematic view of a disassembled structure of a sand box mechanism for V-process sand burying in low-pressure casting of aluminum alloy castings according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a negative pressure sand box according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a base of a flask according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a base of a flask according to an embodiment of the present invention;
FIG. 6 is a schematic view of an assembly structure of a dry sand scattering part according to an embodiment of the present invention;
fig. 7 is a schematic view of a disassembled structure of a dry sand collapsing part according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of an adjustment mechanism provided in an embodiment of the present invention;
FIG. 9 is a schematic structural view of a flask alignment assembly according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a driving unit according to an embodiment of the present invention;
FIG. 11 is a schematic view of the internal structure of a driving gear box according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a vibration dissipation mechanism according to an embodiment of the present invention.
Description of reference numerals:
1. a negative pressure sand box; 11. a strip flange; 12. a butt joint hole; 2. a sand box base; 3. a bearing table; 4. a dry sand bursting part; 41. a hinge portion; 42. a connecting shaft; 5. an adjustment mechanism; 51. adjusting the shaft lever; 511. a first threaded section; 512. a second threaded section; 52. a bearing seat; 53. a linkage adjustment member; 531. a ball nut seat; 532. an adjusting bracket; 533. a hinged seat; 6. a sand box aligning component; 61. a rectangular groove; 62. folding the support frame; 621. rotating the connecting seat; 63. aligning the bearing frame; 64. a limiting column; 65. a return spring; 7. an auxiliary support assembly; 71. a transmission connection member; 72. a support mechanism; 81. a motor; 82. a drive shaft; 83. a drive gear box; 831. a first drive bevel gear; 832. a second drive bevel gear; 9. rotating the rod; 91. adjusting a rod; 92. a cam; 93. a connecting rod; 94. a first drive gear; 95. a second drive gear.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1-12, an embodiment of the present invention provides a technical solution: the utility model provides a sand box mechanism that is used for aluminum alloy casting low pressure casting V method to bury sand, includes sand box base 2 and sets up negative pressure sand box 1 on sand box base 2: two sides of the sand box base 2 are respectively provided with a dry sand collapsing part 4; the dry sand bursting and scattering part 4 can rotate along the side edge of the sand box base 2 to drive dry sand to burst, the bearing table 3 is arranged on the sand box base 2, the dry sand bursting and scattering part 4 is arranged on the bearing table 3, and the length and the width of the spliced bearing table 3 and the dry sand bursting and scattering part 4 are equal to the length and the width of the inner cavity of the negative pressure sand box 1.
The embodiment provides a sand box mechanism for burying sand by a V method in low-pressure casting of aluminum alloy castings, which is used for burying sand by the V method in casting of aluminum alloy castings, and specifically comprises a sand box base 2 and a negative pressure sand box 1, wherein the negative pressure sand box 1 is detachably connected with the sand box base 2 in a combined manner, the negative pressure sand box 1 is of a rectangular box structure with an open top and an open bottom, a negative pressure connecting pipe (not shown in the figure) for extracting gas in the negative pressure sand box 1 to form negative pressure is arranged outside the negative pressure sand box 1, a bearing platform 3 is integrally formed in the upper central area of the sand box base 2, dry sand scattering parts 4 are rotatably arranged on two opposite side edges of the bearing platform 3, for example, two side edges in the width direction of the bearing platform 3 are preferably arranged on two side edges in the length direction of the bearing platform 3, the dry sand scattering parts 4 are of a rectangular plate-shaped structure, and a hinge part 41 is integrally formed on one side of the dry sand scattering parts 4, the hinge 41 is provided with a connecting shaft 42 in a rotating manner, and the connecting shaft 42 is fixed on the side of the bearing table 3. Can support dry sand portion 4 of bursting apart through the support frame when burying sand, after the casting shaping, remove the support frame, dry sand portion 4 of bursting apart uses connecting axle 42 to rotate downwards as the axis under the action of gravity for dry sand portion 4 of bursting apart becomes the tilt state and can't carry out the bearing to the dry sand, bursts with the drive dry sand, makes the dry sand evenly burst comprehensively, does not need staff's assistance to clear up, prevents to cause the damage to the foundry goods, is showing improvement work efficiency.
Furthermore, the length and the width of the spliced bearing platform 3 and the dry sand scattering part 4 are equal to the length and the width of the inner cavity of the negative pressure sand box 1, namely when the negative pressure sand box 1 is assembled on the sand box base 2, the bearing platform 3 and the dry sand scattering part 4 protrude to the inner side of the negative pressure sand box 1, the length and the width of the bearing platform 3 are more than or equal to the length and the width of the casting, a dry sand filling space is formed by the bearing platform 3, the dry sand scattering part 4 and the negative pressure sand box 1, the bearing platform 3 is used for bearing the weight of the 3D printing shell mold and the casting, the dry sand scattering part 4 is used for bearing the weight of the peripheral dry sand, and the dry sand scattering part 4 is prevented from bearing the weight of the casting to cause deformation and influence the overall stability.
According to the sand box mechanism for V-method sand burying in low-pressure casting of aluminum alloy castings, the two side edges of the base of the sand box are respectively provided with the dry sand collapsing parts; when taking out the foundry goods when the casting shaping, separation negative pressure sand box, then the side of collapsing the portion and rotate in step along the sand box base through two dry sand and burst with the drive dry sand for the dry sand is evenly broken comprehensively, does not need staff's assistance to clear up, prevents to cause the damage to the foundry goods, is showing improvement work efficiency.
In still another embodiment of the present invention, an adjusting mechanism 5 and a driving unit are disposed in the bearing table 3; the adjusting mechanism 5 is in transmission connection with the two dry sand scattering parts 4, and the adjusting mechanism 5 receives the driving of the driving unit to drive the two dry sand scattering parts 4 to rotate synchronously for adjustment. A rectangular opening is formed between the two dry sand scattering parts 4 on the bearing table 3, the adjusting mechanism 5 comprises an adjusting shaft rod 51, the adjusting shaft rod 51 is arranged in the rectangular opening in a penetrating manner, bearing seats 52 are rotatably connected to two ends of the adjusting shaft rod 51, the bearing seats 52 are fixed on the sand box base 2, a first threaded section 511 and a second threaded section 512 are respectively formed at two ends of the adjusting shaft rod 51, the thread on the first threaded section 511 is equal to the thread on the second threaded section 512 in the opposite spiral direction, and linkage adjusting pieces 53 are respectively arranged on the first threaded section 511 and the second threaded section 512; the two linkage adjusting pieces 53 are respectively connected with the two dry sand collapsing parts 4, and when the adjusting shaft lever 51 rotates, the two linkage adjusting pieces 53 synchronously drive the two dry sand collapsing parts 4 to rotate and adjust;
further, the linkage adjusting members 53 comprise ball nut seats 531, the ball nut seats 531 are in threaded sleeve connection with the adjusting shaft rod 51, that is, the ball nut seats 531 on the two linkage adjusting members 53 are respectively threaded on the first threaded section 511 and the second threaded section 512 of the adjusting shaft rod 51, an adjusting frame 532 is rotatably connected to the ball nut seats 531, and the adjusting frame 532 is connected with the bottom of the dry sand crushing part 4 through a hinged seat 533.
Specifically, the drive unit is motor 81, drives adjusting shaft 51 through motor 81 and rotates, and adjusting shaft 51 drives two ball nut seats 531 on it and moves in opposite directions, and two ball nut seats 531 cooperate articulated seat 533 through adjusting bracket 532 to drive dry sand collapsing part 4 and rotate and adjust, and in the same way, when motor 81 drives adjusting shaft 51 antiport, two dry sand collapsing parts 4 of synchronous drive rotate and reset. The automatic dry sand bursting part 4 supporting and adjusting is achieved, manual operation of workers is not needed, manual operation of the workers is prevented, and safety of the workers is affected by dry sand bursting.
In another embodiment of the present invention, preferably, a plurality of adjusting mechanisms 5 are provided, and the driving unit synchronously drives a plurality of adjusting mechanisms 5 to synchronously drive the dry sand collapsing parts 4 to synchronously rotate and adjust.
The adjusting mechanisms 5 are provided with a plurality of adjusting mechanisms 5, the plurality of adjusting mechanisms 5 are equidistantly arranged along the length direction of the dry sand collapsing part 4, the driving unit comprises a motor 81, a driving shaft 82 and a driving gear box 83, the driving shaft 82 is arranged on the inner side of the bearing table 3, the driving shaft 82 is provided with a plurality of driving gear boxes 83 which are in transmission connection with the adjusting shaft rods 51 in the adjusting mechanisms 5, the motor 81 is in transmission connection with the driving shaft 82 through a reducer, the inner side of the driving gear box 83 is rotatably provided with a first driving bevel gear 831 and a second driving bevel gear 832, the first driving bevel gear 831 is meshed with the second driving bevel gear 832, the first driving bevel gear 831 is fixedly sleeved on the driving shaft 82, the second driving bevel gear 832 is fixedly sleeved on the adjusting shaft rods 51, and particularly, when the driving motor 81 drives the driving shaft 82 to rotate, the driving shaft 82 synchronously drives the plurality of first driving bevel gears 831 fixedly sleeved thereon to rotate, each first drive bevel gear 831 cooperates with the second drive bevel gear 832 to drive the adjusting shaft 51 to rotate, the adjusting shaft 51 drives the two ball nut seats 531 thereon to move oppositely, and the two ball nut seats 531 cooperate with the hinge seat 533 through the adjusting frame 532 to drive the dry sand crushing part 4 to rotate and adjust. The realization drives the synchronous rotation of dry sand collapsing portion 4 through a plurality of adjustment mechanism 5 of single drive and adjusts, ensures the uniformity of regulation, prevents to appear interfering, realizes simultaneously that the multiple spot drive rotates the regulation, is showing the stability that improves the regulation.
In another embodiment provided by the invention, the sand box base 2 is arranged outside the projection area of the dry sand collapsing part 4 and is provided with the sand box aligning component 6 in an elastic lifting mode, and the sand box aligning component 6 has two working states: the first working state, the sand box aligning component 6 and the bearing platform 3 are parallel to each other, and the second working state, the sand box aligning component 6 is embedded into the sand box base 2. The sand box aligning component 6 comprises a rectangular groove 61, the rectangular groove 61 is arranged on the sand box base 2 and is positioned at the outer side of the dry sand collapsing part 4, two rotating connecting seats 621 are symmetrically and slidably arranged at the inner side of the rectangular groove 61, a return spring 65 is connected between the rotating connecting seats 621 and the end surface of the rectangular groove 61, folding supporting frames 62 are rotatably connected on the two rotating connecting seats 621, and the top ends of the two folding supporting frames 62 are connected with an alignment bearing frame 63, and the top ends of the two folding supporting frames 62 are rotatably connected with the alignment bearing frame 63, the alignment bearing frame 63 is matched with the rectangular groove 61, a plurality of limit columns 64 are arranged on the alignment bearing frame 63 at equal intervals, the spacing between the aligning bearing frame 63 and the bearing platform 3 is equal to the thickness of the negative pressure sand box 1, and the negative pressure sand box 1 is provided with an aligning connecting piece which is matched with the sand box aligning component 6 for limiting connection. The aligning connecting piece comprises strip-shaped flanges 11 which are integrally formed at the bottoms of the same side edges of the negative pressure sand box 1 and the sand box aligning component 6, butt-joint holes 12 are formed in the strip-shaped flanges 11 at equal intervals, and the positions of the joint holes 12 correspond to the positions of the limiting columns 64 one by one.
In still another embodiment of the present invention, when assembling the negative-pressure flask 1, the flask aligning assembly 6 is switched from the first working condition to the second working condition under the gravity of the negative-pressure flask 1; when the negative pressure sand box 1 is dismounted, the sand box contraposition assembly 6 is switched from the second working state to the first working state under the elastic action.
When assembling the negative pressure sand box 1, that is, assembling the negative pressure sand box 1 on the sand box base 2, hoisting the negative pressure sand box 1 to the position right above the sand box base 2 by a hoisting device and then slowly moving down, at the moment, the butt joint holes 12 on the strip-shaped flanges 11 on the outer sides of the negative pressure sand box 1 are sleeved on the butt joint limiting posts 64, the strip-shaped flanges 11 are mutually attached to the alignment bearing frame 63, when the negative pressure sand box 1 continues to descend, the weight of the negative pressure sand box 1 acts on the alignment bearing frame 63, so that the two folding supporting frames 62 are driven to be rotationally folded, and the rotary connecting seat 621 rotationally connected with the bottom ends of the two folding supporting frames 62 is driven to slide in the rectangular groove 61 when the two folding supporting frames 62 are rotationally folded, finally, the alignment bearing frame 63 is embedded in the rectangular groove 61 under the gravity action of the negative pressure sand box 1, (namely, the first working state is switched to the second working state), when the negative pressure sand box 1 is disassembled after the casting molding is completed, after being about to the separation of negative pressure sand box 1 from sand box base 2, this moment under reset spring 65's effect, rotate connecting seat 621 and reset in the inside automatic sliding of rectangular channel 61, cooperate folding support frame 62 drive when rotating connecting seat 621 and reset simultaneously and counterpoint bearing frame 63 to be parallel to each other from rectangular channel 61 in the protruding, it is spacing to assemble negative pressure sand box 1 when realizing assembling negative pressure sand box 1 on sand box base 2, incline to appear negative pressure sand box 1 during the prevention assembly and dry sand bursting portion 4 butt appears, lead to dry sand bursting portion 4 to appear deforming damage, even cause the adjustment mechanism 5 of connecting on the dry sand bursting portion 4 to damage.
In still another embodiment of the present invention, the present invention further comprises an auxiliary supporting assembly 7, wherein the auxiliary supporting assembly 7 comprises a transmission connecting member 71 and a supporting mechanism 72; the transmission connecting piece 71 receives the driving of the sand box aligning component 6 to drive the supporting mechanism 72 to support the dry sand collapsing part 4. Specifically, the transmission connecting piece 71 is a gas supply mechanism, the transmission connecting piece 71 comprises an air cylinder, the air cylinder is horizontally arranged in the rectangular groove 61, piston rods are symmetrically and movably embedded in two sides of the air cylinder, a supporting spring for driving the piston rods to move away from the air cylinder is arranged on the inner side of the air cylinder, the supporting mechanism 72 comprises a supporting air cylinder, the supporting air cylinder is arranged on the sand box base 2 and located at the bottom of the dry sand collapsing part 4, a supporting support rod is movably embedded in the supporting air cylinder, the air cylinder is communicated with the air cylinder through an air pipe, and when the sand box aligning component 6 is switched from the first working state to the second working state, the transmission connecting piece 71 receives the driving of the sand box aligning component 6 to drive the supporting mechanism 72 to support the dry sand collapsing part 4. The bearing frame 63 is acted and aligned by the weight of the negative pressure sand box 1, so that the two folding support frames 62 are driven to rotate and fold, the rotating connecting seat 621 rotationally connected with the bottom end of each folding support frame 62 is driven to slide in the rectangular groove 61 when the two folding support frames 62 rotate and fold, the piston rod is driven to move towards the inner side of the air cylinder by sliding the rotating connecting seat 621, and therefore air on the inner side of the air cylinder is injected into the air cylinder through the connecting pipe to drive the supporting rod in the air cylinder to lift and support the bottom of the dry sand scattering part 4, the dry sand scattering part 4 is supported in an auxiliary mode, the acting force of the dry sand scattering part 4 on the adjusting mechanism 5 is reduced, the adjusting mechanism 5 is protected, and the adjusting mechanism 5 is prevented from being damaged by pressure. When the flask aligning assembly 6 is switched from the second working state to the first working state, the transmission connecting piece 71 receives the driving of the flask aligning assembly 6 to drive the supporting mechanism 72 to contract to release the support of the dry sand collapsing part 4. After being about to negative pressure sand box 1 from sand box base 2 separation, this moment under reset spring 65's elastic force effect, it resets to rotate connecting seat 621 at the inside automatic sliding of rectangular channel 61, it resets to rotate connecting seat 621 and slide folding support frame 62 drive when reseing to coordinate and counterpoint and bear frame 63 and be parallel to each other from rectangular channel 61 in protruding, it promotes the piston rod not at the butt after resetting to rotate connecting seat 621 and slide, under the support spring effect, piston rod automatic re-setting, thereby form the negative pressure and will support the inboard gas of cylinder and take out through the trachea, make the support die-pin in the support cylinder reset, thereby can not rotate to adjust to dry sand portion of bursting 4 and cause the interference.
Through the setting of auxiliary stay subassembly 7, realize when assembling negative pressure sand box 1 on sand box base 2, auxiliary stay subassembly 7 is automatic to be supported dry sand portion 4 of bursting apart, after separating negative pressure sand box 1 from sand box base 2, auxiliary stay subassembly 7 automatic re-setting prevents to rotate to adjust to dry sand portion 4 of bursting apart and causes the interference, thereby realize supplementary portion 4 of bursting apart to supporting dry sand, reduce the effort of dry sand portion 4 of bursting apart to adjustment mechanism 5, and realize protecting adjustment mechanism 5, prevent that adjustment mechanism 5 from being damaged by the pressure.
In still another embodiment of the present invention, the present invention further comprises a vibration scattering mechanism, the vibration scattering mechanism is disposed inside the carrier, and the vibration scattering mechanism is in transmission connection with the adjusting mechanism 5, when the adjusting mechanism 5 drives the dry sand scattering portion 4 to rotate and adjust, the adjusting mechanism 5 synchronously drives the vibration scattering mechanism to drive the dry sand scattering portion 4 to vibrate to assist in scattering the dry sand, further, the vibration scattering mechanism comprises a rotating rod 9 disposed in the carrier 3, two ends of the rotating rod 9 are elastically and telescopically embedded and connected with an adjusting rod 91, the end of the adjusting rod 91 is fixedly connected with a cam 92, the vibration scattering mechanism further comprises a first driving gear 94 and a second driving gear 95, the first driving gear 94 is fixedly connected to the rotating rod 9, the second driving gear 95 is sleeved on the adjusting shaft 51, the first driving gear 94 and the second driving gear 95 are engaged with each other, that when the adjusting shaft 51 rotates, it drives dwang 9 through second drive gear 95 cooperation first drive gear 94 and rotates, and dwang 9 drives regulation pole 91 and rotates, adjusts the cam 92 that pole 91 cooperation its end is connected and shakes supplementary dry sand ulceration to dry sand portion 4 of bursting, and dry sand portion 4 of bursting 4 shakes when folding butt cam 92 drives regulation pole 91 and to the inboard shrink of dwang 9, realizes shaking in step with dry sand portion 4 of bursting 4 rotation regulation adaptation. The dry sand is driven to collapse in a dual mode, and the comprehensiveness and uniformity of collapse are obviously improved. Further, the adjusting rod 91 is further rotatably sleeved with a sleeve frame, the sleeve frame is connected with the ball nut seat 531 through a connecting rod 93, the ball nut seat 531 is synchronously driven to move when the adjusting rod 91 rotates, the ball nut seat 531 is matched with the connecting rod 93 to drive the adjusting rod 91 to contract towards the inner side of the rotating rod 9, and the cam 92 is driven to move, so that the rotating adjustment requirement of the dry sand collapsing part 4 is met.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. The utility model provides a sand box mechanism that is used for aluminum alloy casting low pressure casting V method to bury sand, includes sand box base (2) and set up in negative pressure sand box (1) on sand box base (2), its characterized in that:
two sides of the sand box base (2) are respectively provided with a dry sand collapsing part (4); the dry sand collapsing part (4) can rotate along the side edge of the sand box base (2) to drive dry sand to collapse.
2. The flask mechanism according to claim 1, wherein a carrying platform (3) is provided on the flask base (2), and the dry sand collapsing part (4) is provided on the carrying platform (3).
3. A flask mechanism according to claim 2, wherein the length and width of the carrier (3) and the dry sand collapsing part (4) are equal to the length and width of the cavity of the negative pressure flask (1).
4. A flask mechanism according to claim 2, wherein the carrier table (3) has an adjustment mechanism (5) and a drive unit disposed therein;
the adjusting mechanism (5) is in transmission connection with the two dry sand scattering parts (4), and the adjusting mechanism (5) receives the driving of the driving unit to drive the two dry sand scattering parts (4) to rotate synchronously for adjustment.
5. A sand box mechanism according to claim 4, characterized in that a plurality of adjusting mechanisms (5) are arranged, and the driving unit synchronously drives a plurality of adjusting mechanisms (5) to synchronously drive the dry sand collapsing part (4) to synchronously rotate and adjust.
6. A flask mechanism according to claim 1, wherein the flask base (2) is resiliently liftable outside the projected area of the dry sand collapsing section (4) to provide a flask alignment assembly (6), the flask alignment assembly (6) having two operating states:
the sand box aligning component (6) and the bearing platform (3) are parallel to each other in the first working state, and the sand box aligning component (6) is embedded into the sand box base (2) in the second working state.
7. The sand box mechanism as claimed in claim 6, characterized in that the negative pressure sand box (1) is provided with a positioning connecting piece which is matched with the sand box positioning assembly (6) for limiting connection.
8. A flask mechanism according to claim 6, wherein when assembling the negative pressure flask (1), the flask alignment assembly (6) is switched from the first working condition to the second working condition under the gravity of the negative pressure flask (1);
when the negative pressure sand box (1) is dismounted, the sand box aligning component (6) is switched from the second working state to the first working state under the elastic action.
9. A flask mechanism according to claim 6, further comprising an auxiliary support assembly (7), said auxiliary support assembly (7) comprising a drive connection (71) and a support mechanism (72);
the transmission connecting piece (71) receives the driving of the sand box aligning component (6) to drive the supporting mechanism (72) to support the dry sand collapsing part (4).
10. A flask mechanism according to claim 9, wherein the transmission assembly (71) receives actuation of the flask alignment assembly (6) to drive the support mechanism (72) to support the dry sand collapsing part (4) when the flask alignment assembly (6) is switched from the first operating condition to the second operating condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111635487.7A CN114273620A (en) | 2021-12-29 | 2021-12-29 | Sand box mechanism for V-method sand burying of low-pressure casting of aluminum alloy castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111635487.7A CN114273620A (en) | 2021-12-29 | 2021-12-29 | Sand box mechanism for V-method sand burying of low-pressure casting of aluminum alloy castings |
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| CN114273620A true CN114273620A (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111635487.7A Pending CN114273620A (en) | 2021-12-29 | 2021-12-29 | Sand box mechanism for V-method sand burying of low-pressure casting of aluminum alloy castings |
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| CN (1) | CN114273620A (en) |
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| CN111408690A (en) * | 2020-04-07 | 2020-07-14 | 滁州金诺实业有限公司 | High-performance aluminum alloy casting dieless forming casting method |
| CN212704312U (en) * | 2020-06-07 | 2021-03-16 | 侯马市宝德机械铸造有限公司 | Sand box sand discharging mechanism for lost foam casting |
| CN113399655A (en) * | 2021-07-09 | 2021-09-17 | 滁州金诺实业有限公司 | V-method sand burying and sand box mechanism based on aluminum alloy casting sand mold low-pressure casting |
| CN113536480A (en) * | 2021-07-12 | 2021-10-22 | 滁州金诺实业有限公司 | Dieless forming casting process for aluminum alloy casting |
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| CN102615252A (en) * | 2012-02-28 | 2012-08-01 | 夏汝明 | Negative pressure modeling and demolding device |
| CN202684054U (en) * | 2012-07-19 | 2013-01-23 | 天津市龙鑫汇汽车零部件制造有限公司 | Sand discharging device at bottom of sand box |
| CN207681446U (en) * | 2017-12-12 | 2018-08-03 | 扬州市瑞晟机械铸造有限公司 | The lost foam casting sandbox being convenient to clean |
| CN207900214U (en) * | 2018-02-05 | 2018-09-25 | 辽阳德盛重工机械有限公司 | A kind of lost foam casting sandbox bottom sand unloading machine structure |
| CN111408690A (en) * | 2020-04-07 | 2020-07-14 | 滁州金诺实业有限公司 | High-performance aluminum alloy casting dieless forming casting method |
| CN212704312U (en) * | 2020-06-07 | 2021-03-16 | 侯马市宝德机械铸造有限公司 | Sand box sand discharging mechanism for lost foam casting |
| CN113399655A (en) * | 2021-07-09 | 2021-09-17 | 滁州金诺实业有限公司 | V-method sand burying and sand box mechanism based on aluminum alloy casting sand mold low-pressure casting |
| CN113536480A (en) * | 2021-07-12 | 2021-10-22 | 滁州金诺实业有限公司 | Dieless forming casting process for aluminum alloy casting |
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Application publication date: 20220405 |