CN113399655A

CN113399655A - V-method sand burying and sand box mechanism based on aluminum alloy casting sand mold low-pressure casting

Info

Publication number: CN113399655A
Application number: CN202110777799.5A
Authority: CN
Inventors: 马正松; 马文青; 蔡新伟
Original assignee: Chuzhou Jinnuo Industrial Co ltd
Current assignee: Chuzhou Jinnuo Industrial Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-09-17

Abstract

The invention discloses a V-method sand burying sand box mechanism based on aluminum alloy casting sand mold low-pressure casting, which relates to the technical field of aluminum alloy casting and comprises a negative-pressure sand box, wherein a sand box base is arranged at the bottom of the negative-pressure sand box, a plurality of sand unloading holes are formed in the sand box base, and a plurality of cover plates which correspond to the sand unloading holes one by one and are used for sealing the sand unloading holes are arranged at the bottom of the sand box base in a sliding manner; the sand unloading device is characterized by further comprising a sand unloading collecting box, wherein the sand unloading collecting box is arranged below the sand box base, and a sand unloading assembly is arranged in the sand unloading collecting box.

Description

V-method sand burying and sand box mechanism based on aluminum alloy casting sand mold low-pressure casting

Technical Field

The invention relates to the technical field of aluminum alloy casting, in particular to a V-method sand burying sand box mechanism based on aluminum alloy casting sand mold low-pressure casting.

Background

Sand casting is known as a casting process for producing castings in sand molds, and castings of steel, iron and most nonferrous alloys can be obtained by sand casting. 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 molds, the sand box base for burying sand by the V method is provided with a sand unloading hole, the sand unloading hole is rotatably arranged on the cover plate for sealing, and the piston rod of the air cylinder is matched to drive the cover plate to rotate so as to realize the opening and closing of the sand unloading hole.

According to the invention patent with the application publication number of CN113042709A, the application publication date of 2021, 06 and 29 and the name of V-method sand burying mechanism for ultra-large aluminum alloy casting sand mold low-pressure casting, the invention concretely comprises that a plurality of sand unloading holes are formed in a sand box base, four negative pressure connecting pipes are mounted on a negative pressure sand box, a plurality of negative pressure holes are formed in the inner wall of the negative pressure sand box, a vehicle body is arranged above a pouring bottom plate, a liquid lifting pipe is formed in the sand box base, a liquid lifting port is formed in the pouring bottom plate, the plurality of sand unloading holes are arranged on the sand box base in a rectangular array, a plurality of opening and closing cylinders are rotatably mounted at the bottom of the sand box base, a cover plate is rotatably mounted at the end part of a piston rod of each opening and closing cylinder, the plurality of sand unloading holes correspond to the plurality of cover plates one to one, and the sand unloading holes and the cover plates are matched members.

The weak point of prior art lies in, because set up a plurality of sand discharging holes on the sand box base, the event needs to arrange a plurality of air cylinder piston rods in the sand box base bottom surface and drives in order to realize unloading the apron in the sand discharging hole a plurality of, easily break down in the use, influence the normal sand discharging operation, the bottom surface at the sand box base is arranged to a plurality of air cylinder piston rods exposed formula simultaneously, easily the unexpected collision extrusion that appears when transporting leads to air cylinder piston rod to break down, influence the sealed effect of apron, lead to appearing unloading the problem that the hole appears leaking sand.

Disclosure of Invention

The invention aims to provide a V-method sand burying and sand box mechanism based on aluminum alloy casting sand mold low-pressure casting, which aims to overcome the defects in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme: the V-method sand burying sand box mechanism based on the sand mold low-pressure casting of the aluminum alloy casting comprises a negative-pressure sand box, wherein a sand box base is arranged at the bottom of the negative-pressure sand box, a plurality of sand unloading holes are formed in the sand box base, and a plurality of cover plates which correspond to the sand unloading holes in a one-to-one mode and are used for sealing the sand unloading holes are arranged at the bottom of the sand box base in a sliding mode; the sand unloading device is characterized by further comprising a sand unloading collecting box, the sand unloading collecting box is arranged below the base of the sand box, a sand unloading assembly is arranged in the sand unloading collecting box and used for driving the cover plates to slide in a reciprocating mode so as to open or close the sand unloading holes.

As a further description of the above technical solution: unload the sand subassembly and include the mounting bracket, the activity of mounting bracket over-and-under type is established in unloading the sand collecting box, on the mounting bracket with it is fixed with the sand unloading funnel to unload sand pore pair position department, and is provided with apron adjustment mechanism on unloading the sand funnel, apron adjustment mechanism is assembled to be: when the sand unloading funnel moves upwards and is in butt joint with the sand unloading hole, the cover plate adjusting mechanism synchronously drives the cover plate to slide in the guide sliding groove so as to open the sand unloading hole.

As a further description of the above technical solution: the cover plate adjusting mechanism comprises a fixed sleeve frame, the fixed sleeve frame is fixedly sleeved on the top opening of the sand unloading funnel, an adjusting connecting rod is arranged on the fixed sleeve frame in a rotating mode, the top end of the adjusting connecting rod is connected with an adjusting seat in a rotating mode through a hinged seat, an auxiliary supporting piece used for elastically supporting the adjusting connecting rod is further arranged on the fixed sleeve frame, and an adjusting groove used for being matched with the adjusting seat is formed in the bottom of the cover plate.

As a further description of the above technical solution: the auxiliary supporting piece comprises a guide polished rod fixed on the outer side of the fixed sleeve frame, the guide polished rod is sleeved with an adjusting sleeve frame in a sliding mode, the adjusting sleeve frame is connected with a supporting connecting rod in a rotating mode, the other end of the supporting connecting rod is connected with the adjusting connecting rod in a rotating mode, and the guide polished rod is sleeved with a supporting spring.

As a further description of the above technical solution: adjust and be provided with the self-locking piece that resets on the seat, the self-locking piece that resets is configured into: when the adjusting connecting rod rotates, the reset self-locking piece locks the adjusting seat in the adjusting groove, so that when the sand unloading funnel moves downwards to be separated from the sand unloading hole, the cover plate adjusting mechanism synchronously drives the cover plate to slide in the guide sliding groove to cover the sand unloading hole.

As a further description of the above technical solution: reset from the locking part including seting up the installation cavity in the regulation seat inside, the bilateral symmetry activity of installation cavity is run through and is provided with the auto-lock lug, still be provided with the linkage subassembly in the installation cavity, the linkage subassembly receives two auto-lock lugs of drive are protruding to the outside to stretch when adjusting the connecting rod and rotating the extrusion.

As a further description of the above technical solution: the linkage assembly comprises an adjusting rod penetrating through the installation cavity, the adjusting rod is located in the installation cavity, one end of the adjusting rod is symmetrically connected with adjusting connecting rods in a bilateral rotating mode, the tail ends of the adjusting connecting rods are respectively connected with the tail ends of the two self-locking lugs in a rotating mode, and elastic supporting pieces are further connected between the bottom end of the adjusting rod and the installation cavity.

As a further description of the above technical solution: and self-locking grooves matched with the self-locking lugs for use are symmetrically formed in the two side walls of the adjusting groove.

As a further description of the above technical solution: and lifting adjusting components are further arranged on two sides of the negative pressure sand box and connected with the mounting frame so as to drive the mounting frame to move up and down in the negative pressure sand box.

As a further description of the above technical solution: the sand unloading hopper is internally provided with a sand unloading mechanism, the sand unloading mechanism comprises a rotating shaft which is rotatably arranged in the sand unloading hopper, and the top end of the sand unloading mechanism extends to the outer side of the sand unloading hopper and is connected with a side frame.

In the technical scheme, the V-method sand burying sand box mechanism based on the sand mold low-pressure casting of the aluminum alloy casting, provided by the invention, has the advantages that the cover plate for controlling the opening and closing of the sand unloading hole is arranged on the sand box base in a sliding manner, the sand unloading assembly is arranged in the sand unloading collecting box, when the negative pressure sand box and the sand box base are transferred to the sand unloading collecting box for sand unloading operation, the cover plate is driven by the sand unloading assembly to slide and be staggered with the sand unloading hole, the automatic sand unloading is realized by opening the sand unloading hole, the synchronous driving of a plurality of cover plates through single driving is realized, the fault probability is reduced, the maintenance is convenient, the sand unloading assembly is integrally arranged in the sand unloading collecting box, the sand box base is kept flat, the transfer of the negative pressure sand box and the sand box base is convenient, meanwhile, the phenomenon that the scraper driving mechanism fails due to accidental collision and extrusion during the transfer, and the sealing effect of the cover plate is influenced, resulting in the problem of sand leakage in the sand unloading hole.

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 V-process sand burying box mechanism based on aluminum alloy casting sand mold low-pressure casting according to an embodiment of the invention;

FIG. 2 is a schematic structural view of a sand discharge assembly provided in an embodiment of the present invention;

FIG. 3 is a schematic front view of a base of a flask according to an embodiment of the present invention;

FIG. 4 is a schematic view of the back side of the base of the flask according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an adjustment slot provided in an embodiment of the present invention;

FIG. 6 is a schematic view of a connection structure of a sand discharge funnel and a cover plate adjusting mechanism according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a cover plate adjusting mechanism according to an embodiment of the present invention;

FIG. 8 is an elevation view of a cover adjustment mechanism provided in accordance with an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of an adjusting seat according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a reset self-locking element provided by an embodiment of the present invention;

fig. 11 is a schematic view illustrating an assembling structure of a cover plate self-locking member according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a cover plate self-locking element according to an embodiment of the present invention.

Description of reference numerals:

1. a negative pressure sand box; 11. a negative pressure hole; 12. connecting a negative pressure pipe; 2. a sand box base; 21. unloading the sand hole; 22. a liquid lifting port; 23. a guide chute; 24. a cover plate; 241. an adjustment groove; 242. a self-locking groove; 25. the cover plate is self-locking; 251. a connecting sleeve seat; 252. adjusting the sliding seat; 253. a self-locking pin; 254. a clamping head; 255. a guide adjusting groove; 256. a return spring; 3. a sand discharge collection box; 4. a sand discharge assembly; 41. a mounting frame; 42. a sand unloading funnel; 43. a cover plate adjusting mechanism; 431. fixing the sleeve frame; 432. adjusting the connecting rod; 433. a guide polish rod; 434. adjusting the sleeve frame; 435. a support spring; 436. a support link; 437. an adjusting seat; 438. a hinged seat; 44. a self-locking reset component; 441. a mounting cavity; 442. a self-locking projection; 443. an elastic support member; 444. adjusting a rod; 445. a reciprocating connecting rod; 5. a lift adjustment assembly; 51. a strip-shaped opening; 52. a hydraulic telescopic rod; 53. and adjusting the connecting frame.

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 V-method sand burying sand box mechanism based on the sand mold low-pressure casting of the aluminum alloy casting comprises a negative-pressure sand box 1, wherein a sand box base 2 is arranged at the bottom of the negative-pressure sand box 1, a plurality of sand unloading holes 21 are formed in the sand box base 2, and a plurality of cover plates 24 which correspond to the sand unloading holes 21 one by one and are used for sealing the sand unloading holes 21 are arranged at the bottom of the sand box base 2 in a sliding mode; the sand discharging device further comprises a sand discharging collecting box 3, the sand discharging collecting box 3 is arranged below the sand box base 2, a sand discharging assembly 4 is arranged in the sand discharging collecting box 3, and the sand discharging assembly 4 is used for driving each cover plate 24 to slide back and forth to open or close each sand discharging hole 21.

Specifically, the V-process sand-embedding flask mechanism based on aluminum alloy casting sand mold low-pressure casting provided in this embodiment is used for assisting in driving the cover plate 24 on the flask base 2 to move after the aluminum alloy casting is poured, solidified and cooled, so that the sand unloading holes 21 are opened, and performing sand unloading operation, the negative pressure connecting pipes 12 are symmetrically installed on two sides of the negative pressure flask 1, the negative pressure holes 11 are uniformly formed in the side wall inside the negative pressure flask 1, the negative pressure holes 11 are communicated with the negative pressure connecting pipes 12, the negative pressure connecting pipes 12 are matched with the negative pressure holes 11 to realize negative pressure positive emptying inside the negative pressure flask 1, the center position of the flask base 2 is provided with the liquid lifting port 22 for pouring, the flask base 2 is uniformly provided with a plurality of sand unloading holes 21, the flask base 2 is provided with the guide chutes 23 at positions corresponding to the plurality of sand unloading holes 21, the plurality of cover plates 24 are slidably embedded in the guide chutes 23, the cover plate 24 has two stations, the first station cover plate 24 corresponds to the sand unloading hole 21 up and down to seal the sand unloading hole 21, the second station cover plate 24 is staggered with the sand unloading hole 21 up and down to open the sand unloading hole 21 to unload sand, the sand unloading collecting box 3 is arranged below the sand box base 2 and is used for bearing the sand box base 2 and the negative pressure sand box 1, a groove can be formed in the bottom surface of the sand unloading station, the sand unloading collecting box 3 is arranged in the groove, so that the negative pressure sand box 1 and the sand box base 2 are convenient to transfer to the sand unloading collecting box 3 to carry out sand unloading operation, the sand unloading collecting box 3 is internally provided with a sand unloading assembly 4, the sand unloading assembly 4 is used for driving each cover plate 24 to slide back and forth to open or seal each sand unloading hole 21, namely the sand unloading assembly 4 drives the cover plate 24 to switch between the first station and the second station, optionally, the sand unloading assembly 4 is a push frame which is horizontally arranged in the sand unloading collecting box 3 in a sliding manner, and the electric push rod connected with the push frame drives the push frame to drive each cover plate 24 to slide in each guide sliding groove 23 so that the cover plates 24 and the sand unloading holes 21 are staggered up and down to open the sand unloading holes 21 to unload sand when the negative pressure sand box 1 and the sand box base 2 are transferred to the sand unloading collecting box 3 to carry out sand unloading operation, thereby completing the sand unloading operation.

The V-method sand burying and sand box mechanism based on the low-pressure casting of the aluminum alloy casting sand mold provided by the embodiment is characterized in that a cover plate for controlling opening and closing of a sand unloading hole is arranged on a sand box base in a sliding manner, a sand unloading assembly is arranged in a sand unloading collecting box, when the negative pressure sand box and the sand box base are transferred to the sand unloading collecting box for sand unloading operation, the sand unloading assembly drives the cover plate to slide and dislocate with the sand unloading hole, so as to realize automatic sand unloading by opening the sand unloading hole, realize synchronous driving by singly driving a plurality of cover plates, reduce the failure probability and maintain, meanwhile, the sand unloading component is integrated and arranged in the sand unloading collecting box 3, so that the sand box base 2 is kept flat, the negative pressure sand box 1 and the sand box base 2 are convenient to transfer, meanwhile, the cover plate driving mechanism is prevented from being broken down due to accidental collision and extrusion during transferring, the sealing effect of the cover plate is influenced, and the problem that sand leakage occurs in the sand unloading hole 21 is solved.

In still another embodiment of the present invention, it is preferable that the sand discharging assembly 4 includes a mounting frame 41, the mounting frame 41 is movably installed in the sand discharging collecting box 3 in a lifting manner, a sand discharging funnel 42 is fixed on the mounting frame 41 at a position corresponding to the sand discharging hole 21, a cover plate adjusting mechanism 43 is installed on the sand discharging funnel 42, and the cover plate adjusting mechanism 43 is configured to: when the sand discharge hopper 42 moves upwards to be butted with the sand discharge hole 21, the cover plate adjusting mechanism 43 synchronously drives the cover plate 24 to slide on the guide chute 23 to open the sand discharge hole 21. The cover plate adjusting mechanism 43 comprises a fixed sleeve frame 431, the fixed sleeve frame 431 is fixedly sleeved on the top opening of the sand unloading funnel 42, an adjusting connecting rod 432 is arranged on the fixed sleeve frame 431 in a rotating mode, the top end of the adjusting connecting rod 432 is rotatably connected with an adjusting seat 437 through a hinged seat 438, an auxiliary supporting piece used for elastically supporting the adjusting connecting rod 432 is further arranged on the fixed sleeve frame 431, and an adjusting groove 241 used for matching the adjusting seat 437 is formed in the bottom of the cover plate 24. Specifically, the sand unloading assembly 4 comprises a mounting frame 41 movably arranged in the sand unloading collecting box 3 in a lifting manner, the mounting frame 41 is of a rectangular frame structure, a plurality of reinforcing ribs are fixed inside the mounting frame 41, a plurality of sand unloading funnels 42 are fixedly arranged on the mounting frame 41, each sand unloading funnel 42 is of a cylindrical structure with a large top and a small bottom, the plurality of sand unloading funnels 42 correspond to the positions of the sand unloading holes 21 up and down, a cover plate adjusting mechanism 43 is arranged at the top ends of the sand unloading funnels 42, the cover plate adjusting mechanism 43 is used for synchronously driving a cover plate 24 to slide on a guide chute 23 to open the sand unloading holes 21 when the mounting frame 41 drives the sand unloading funnels 42 to move up and butt joint with the sand unloading holes 21, so that top openings of the sand unloading funnels 42 are butt joint with the sand unloading holes 21, guiding sand unloading is realized, cast sand is prevented from adhering to the cover plate adjusting mechanism 43 during sand unloading, and the running stability of the cover plate adjusting mechanism 43 is influenced, and unloading sand through the butt joint of the sand unloading funnel 42 and the sand unloading hole 21, little dust emission, good environment and low labor intensity during unloading sand, and simultaneously improving the stability of unloading sand, and avoiding the problem of crush, further, the cover plate adjusting mechanism 43 is arranged on the sand unloading funnel 42, so that the cover plate 24 is automatically opened when the sand unloading funnel 42 is in butt joint, the cover plate 24 is opened without independent configuration and driving, the equipment cost is reduced, the operation is more convenient, the fault probability is further reduced, and the sand unloading stability is improved, the cover plate adjusting mechanism 43 comprises a fixed sleeve frame 431 fixed on the top opening of the sand unloading funnel 42, the fixed sleeve frame 431 is of a rectangular frame upper structure with a round opening inside, the two sides of the fixed sleeve frame 431 are symmetrically and rotatably connected with adjusting connecting rods 432, the top ends of the adjusting connecting rods 432 are rotatably connected with adjusting seats 437 through hinge seats 438, torsion springs are arranged on the hinge seats 438, the elasticity of the torsion springs is used for driving the adjusting seats 437 to be horizontal, the adjusting groove 241 is conveniently abutted to the bottom of the cover plate 24, an auxiliary supporting piece for elastically supporting the adjusting connecting rod 432 is further arranged on the outer side of the fixed sleeve frame 431, the auxiliary supporting piece is used for supporting the adjusting connecting rod 432 in an auxiliary mode so that the adjusting connecting rod 432 is kept at a preset position in a normal state, when the mounting frame 41 drives the sand discharging funnel 42 to move upwards and abut against the sand discharging hole 21, the adjusting seat 437 at the top end of the adjusting connecting rod 432 is embedded in the adjusting groove 241 formed in the bottom of the cover plate 24, when the sand discharging funnel 42 continuously moves upwards, the adjusting connecting rod 432 rotates and is matched with the adjusting seat 437 to drive the cover plate 24 to slide and be dislocated with the sand discharging hole 21, the sand discharging hole 21 is opened, meanwhile, the sand discharging hole 42 is abutted to the sand discharging hole 21, and guiding sand discharging is achieved.

In another embodiment of the present invention, the auxiliary supporting member includes a guiding polished rod 433 fixed outside the fixed sleeve frame 431, an adjusting sleeve frame 434 is slidably sleeved on the guiding polished rod 433, a supporting link 436 is rotatably connected to the adjusting sleeve frame 434, the other end of the supporting link 436 is rotatably connected to the adjusting link 432, and a supporting spring 435 is sleeved on the guiding polished rod 433. Specifically, the elastic force of the supporting spring 435 is used to drive the adjusting sleeve frame 434 to slide along the guide polished rod 433 to one side of the adjusting link 432, that is, the adjusting sleeve frame 434 is elastically supported by the supporting spring 435, the adjusting link 432 is supported by the adjusting sleeve frame 434 in cooperation with the supporting link 436, and when the adjusting link 432 is not pressed, the adjusting link 432 is always kept at a preset position (where the preset position corresponds to the position of the adjusting groove 241 on the cover plate 24 when the cover plate 24 closes the sand discharge hole 21), and when the sand discharge funnel 42 moves upwards, the adjusting link 432 is in cooperation with the adjusting seat 437 at the top end to be in abutment with the adjusting groove 241 on the cover plate 24 and presses the adjusting link 432, the adjusting link 432 rotates to drive the cover plate 24 to open, and at this time, the adjusting link 432 is in cooperation with the supporting link 436 to drive the adjusting sleeve frame 434 to slide on the guide polished rod 433, and the supporting spring 435 is compressed.

In still another embodiment of the present invention, it is preferable that the adjusting seat 437 is provided with a self-locking reset element 44, and the self-locking reset element 44 is configured to: when the adjusting link 432 rotates, the reset self-locking piece 44 locks the adjusting seat 437 in the adjusting groove 241, so that when the sand discharge funnel 42 moves downwards to be separated from the sand discharge hole 21, the cover plate adjusting mechanism 43 synchronously drives the cover plate 24 to slide on the guide slide groove 23 to cover the sand discharge hole 21. Reset from lock piece 44 is including seting up the installation cavity 441 in adjusting seat 437, and the bilateral symmetry activity of installation cavity 441 is run through and is provided with auto-lock lug 442, still is provided with the linkage subassembly in installation cavity 441, and the linkage subassembly receives adjusting rod 432 to rotate when extrudeing and drive two auto-lock lugs 442 and to protruding outside, and the auto-lock groove 242 that cooperation auto-lock lug 442 used is seted up to the both sides wall symmetry of adjustment groove 241.

The sand discharging funnel 42 moves upwards, the adjusting link 432 is in butt joint with the adjusting groove 241 on the cover plate 24 in cooperation with the adjusting seat 437 at the top end, when the sand discharging funnel 42 moves upwards continuously, the adjusting link 432 deflects between the hinge seat 438 and the adjusting seat 437 at the moment, the adjusting link 432 deflects to drive the reset self-locking piece 44 to lock the adjusting seat 437 in the adjusting groove 241, so that when the sand discharging funnel 42 moves downwards to be separated from the sand discharging hole 21, the adjusting link 432 is in cooperation with the adjusting seat 437 at the top end to drive the cover plate 24 to slide in the guide sliding chute 23 to cover the sand discharging hole 21, when the sand discharging funnel 42 moves to the initial position, the adjusting link 432 automatically resets and does not drive the reset self-locking piece 44, the adjusting seat 437 is unlocked from the adjusting groove 241, the adjusting seat 437 is automatically separated from the adjusting groove 241, further, the reset self-locking piece 44 comprises a mounting cavity 441 arranged in the adjusting seat 437, two sides of the mounting cavity 441 are symmetrically and movably provided with self-locking lugs 442 in a penetrating manner, the installation cavity 441 is further provided with a linkage assembly, the adjusting connecting rod 432 deflects to drive the linkage assembly, the linkage assembly drives the two self-locking protrusions 442 to protrude from two sides of the adjusting seat 437 and be embedded in self-locking grooves 242 symmetrically formed in two side walls of the adjusting groove 241, the adjusting seat 437 is locked in the adjusting groove 241, optionally, the linkage assembly is an air pressure piston rod, the air pressure piston rod is deflected by the adjusting connecting rod 432 to move downwards, the air pressure in the installation cavity 441 is increased, and the two self-locking protrusions 442 are driven to protrude from two sides of the adjusting seat 437.

In another embodiment of the present invention, preferably, the linkage assembly includes an adjusting rod 444 penetrating through the installation cavity 441, the adjusting rod 444 is located inside the installation cavity 441, and two ends of the adjusting rod 444 are symmetrically and rotatably connected to the reciprocating connecting rods 445, and the tail ends of the two reciprocating connecting rods 445 are respectively and rotatably connected to the tail ends of the two self-locking protrusions 442, and an elastic supporting member 443 is further connected between the bottom end of the adjusting rod 444 and the installation cavity 441. The two side walls of the adjusting groove 241 are symmetrically provided with self-locking grooves 242 matched with the self-locking protrusions 442 for use. Specifically, the adjusting rod 444 is driven by the adjusting link 432 to move downwards in a deflecting manner, the two reciprocating links 445, which are symmetrically and rotatably connected with two sides of one end of the adjusting rod 444, are respectively driven to protrude from two sides of the adjusting seat 437, the two self-locking protrusions 442 protrude from two sides of the adjusting seat 437 and are embedded in the self-locking grooves 242 symmetrically formed on two side walls of the adjusting groove 241, so that the adjusting seat 437 is locked in the adjusting groove 241, when the sand discharging funnel 42 moves to the initial position, the adjusting link 432 automatically resets and does not drive the resetting self-locking piece 44, at this time, under the action of the elastic support 443, the adjusting rod 444 resets and moves upwards, the adjusting rod 444 is matched with the two reciprocating links 445 to drive the two self-locking protrusions 442 to retract from two sides of the adjusting seat 437, the two self-locking protrusions 442 are separated from the self-locking grooves 242 symmetrically formed on two side walls of the adjusting groove 241, and the adjusting seat 437 is unlocked from the adjusting groove 241, the adjustment seat 437 is automatically separated from the adjustment groove 241.

In another embodiment provided by the invention, the two sides of the negative pressure sand box 1 are also provided with lifting adjusting assemblies 5, and the lifting adjusting assemblies 5 are connected with the mounting frame 41 to drive the mounting frame 41 to perform lifting movement in the negative pressure sand box 1. Specifically, lift adjustment subassembly 5 is including seting up the bar opening 51 at negative pressure sand box 1 lateral wall, and fix the hydraulic telescoping rod 52 at negative pressure sand box 1 lateral wall, hydraulic telescoping rod 52's expansion end is connected with the regulation link 53, it runs through bar opening 51 and is connected with mounting bracket 41 to adjust link 53, adjust link 53 through the cooperation of hydraulic telescoping rod 52 and drive mounting bracket 41 and go up and down to remove, and through the external wall at negative pressure sand box 1 with hydraulic telescoping rod 52, prevent that the inside foundry sand of negative pressure sand box 1 from causing the influence to it, protect hydraulic telescoping rod 52, the stability of the removal of going up and down is improved.

In another embodiment of the present invention, a sand discharge mechanism is disposed in the sand discharge hopper 42, and the sand discharge mechanism includes a rotating shaft rotatably disposed in the sand discharge hopper, and the top end of the rotating shaft extends to the outside of the sand discharge hopper 42 and is connected to a side frame. Specifically, set up drive unit in unloading sand funnel 42, rotate through drive unit drive pivot, the side bearer on its top of pivot cooperation realizes unloading the sand hole and supplementary unloading sand, prevent to unload the sand hole and appear blockking up, improve the stability of unloading sand, it is further, unloading sand funnel 42 still in set up the mechanism of breaing up, the mechanism of breaing up is including setting up the frame of breaing up in the pivot, it realizes breaing up the foundry sand that falls down from unloading sand funnel 42 to break up the frame through pivot normal running fit, prevent the foundry sand agglomeration, subsequent reuse of being convenient for.

In still another embodiment of the present invention, preferably, a cover plate self-locking piece 25 is disposed in the adjusting groove 241, the cover plate self-locking piece 25 is used for self-locking and fixing the cover plate 24 when the cover plate 24 closes the sand unloading hole 21, so as to prevent the sand leakage from occurring in the sand unloading hole 21 due to accidental sliding of the cover plate 24, the cover plate self-locking piece 25 includes a connecting sleeve seat 251, the connecting sleeve seat 251 is fixed in the adjusting groove 241, a self-locking pin 253 vertically and movably penetrates through the connecting sleeve seat 251, the self-locking pin 253 penetrates through the cover plate 24, a locking hole used in cooperation with the self-locking pin 253 is disposed in the guide sliding groove 23, an adjusting sliding seat 252 is slidably inserted in the connecting sleeve seat 251, a guide adjusting groove 255 is obliquely disposed on the adjusting sliding seat 252, a clamping connector 254 is disposed at the tail end of the self-locking pin 253, the clamping connector 254 is slidably inserted in the guide adjusting groove 255, a return spring 256 is disposed between the adjusting sliding seat 252 and the, specifically, when the cover plate 24 closes the sand discharge hole 21, the position of the self-locking pin 253 corresponds to the position of a lock hole arranged in the guide chute 23 and used in cooperation with the self-locking pin 253, under the action of the return spring 256, the latch 254 is positioned at the bottom of the guide adjustment slot 255, and the self-locking pin 253 penetrates through the cover plate 24 and is inserted into the lock hole, thereby realizing the fixation of the cover plate 24, when the adjusting connecting rod 432 is matched with the adjusting seat 437 at the top end to be butted with the adjusting groove 241 on the cover plate 24, when the cover plate 24 is driven to slide by matching with the adjusting seat 437 and the sand discharging hole 21 is opened in a staggered way, the adjusting seat 437 first drives the adjusting slide seat 252 to move toward the inside of the connecting sleeve seat 251, the adjusting slide seat 252 moves toward the inside of the connecting sleeve seat 251 to cooperate with the guiding adjusting groove 255 and the locking joint 254 thereon to drive the self-locking pin 253 to retract into the cover plate 24, the cover plate 24 is unlocked, and then the cover plate 24 is driven to slide and the sand discharge hole 21 is opened in a staggered mode.

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

1. Sand sand box mechanism is buried to V method based on aluminum alloy casting sand mould low pressure casting, including negative pressure sand box (1), the bottom of negative pressure sand box (1) is provided with sand box base (2), a plurality of sand discharging holes (21), its characterized in that have been seted up on sand box base (2):

the bottom of the sand box base (2) is provided with a plurality of cover plates (24) which correspond to the sand unloading holes (21) one by one and are used for sealing the sand unloading holes (21);

the sand unloading device is characterized by further comprising a sand unloading collecting box (3), wherein the sand unloading collecting box (3) is arranged below the sand box base (2), a sand unloading assembly (4) is arranged in the sand unloading collecting box (3), and the sand unloading assembly (4) is used for driving each cover plate (24) to slide in a reciprocating mode so as to open or close each sand unloading hole (21).

2. The V-process sand-embedding sand box mechanism based on aluminum alloy casting sand mold low-pressure casting as claimed in claim 1, wherein the sand unloading assembly (4) comprises a mounting frame (41), the mounting frame (41) is movably arranged in the sand unloading collecting box (3) in a lifting mode, a sand unloading funnel (42) is fixed on the mounting frame (41) at a position corresponding to the sand unloading hole (21), a cover plate adjusting mechanism (43) is arranged on the sand unloading funnel (42), and the cover plate adjusting mechanism (43) is assembled as follows: when the sand discharging hopper (42) moves upwards and is in butt joint with the sand discharging hole (21), the cover plate adjusting mechanism (43) synchronously drives the cover plate (24) to slide in the guide sliding groove (23) so as to open the sand discharging hole (21).

3. The V-process sand burying and sand box mechanism based on aluminum alloy casting sand mold low pressure casting as claimed in claim 2, wherein the cover plate adjusting mechanism (43) comprises a fixed sleeve frame (431), the fixed sleeve frame (431) is fixedly sleeved on the top opening of the sand unloading funnel (42), an adjusting connecting rod (432) is arranged on the fixed sleeve frame (431) in a rotating mode, the top end of the adjusting connecting rod (432) is rotatably connected with an adjusting seat (437) through a hinged seat (438), an auxiliary supporting member for elastically supporting the adjusting connecting rod (432) is further arranged on the fixed sleeve frame (431), and an adjusting groove (241) matched with the adjusting seat (437) is formed in the bottom of the cover plate (24).

4. The V-process sand-embedding sand box mechanism based on aluminum alloy casting sand mold low-pressure casting is characterized in that the auxiliary support comprises a guide polished rod (433) fixed on the outer side of a fixed sleeve frame (431), an adjusting sleeve frame (434) is sleeved on the guide polished rod (433) in a sliding mode, a support connecting rod (436) is connected to the adjusting sleeve frame (434) in a rotating mode, the other end of the support connecting rod (436) is connected with an adjusting connecting rod (432) in a rotating mode, and a support spring (435) is sleeved on the guide polished rod (433).

5. The V-sand-burying box mechanism based on aluminum alloy casting sand mold low pressure casting according to claim 3, characterized in that a reset self-locking piece (44) is arranged on the adjusting seat (437), and the reset self-locking piece (44) is configured to: when the adjusting connecting rod (432) rotates, the reset self-locking piece (44) locks the adjusting seat (437) in the adjusting groove (241) so that the sand discharging hopper (42) moves downwards to be separated from the sand discharging hole (21), and the cover plate adjusting mechanism (43) synchronously drives the cover plate (24) to slide in the guide sliding groove (23) to cover the sand discharging hole (21).

6. The V-process sand-embedding sand box mechanism based on aluminum alloy casting sand mold low-pressure casting is characterized in that the reset self-locking piece (44) comprises a mounting cavity (441) arranged inside the adjusting seat (437), the two sides of the mounting cavity (441) are symmetrically and movably provided with self-locking lugs (442) in a penetrating manner, and a linkage assembly is further arranged in the mounting cavity (441) and drives the two self-locking lugs (442) to protrude outwards when the linkage assembly is rotationally extruded by the adjusting connecting rod (432).

7. The V-process sand-embedding sand box mechanism based on aluminum alloy casting sand mold low-pressure casting is characterized in that the linkage assembly comprises an adjusting rod (444) penetrating through the installation cavity (441), reciprocating connecting rods (445) are symmetrically and rotatably connected to two sides of one end, located inside the installation cavity (441), of the adjusting rod (444), tail ends of the two reciprocating connecting rods (445) are respectively and rotatably connected with tail ends of the two self-locking lugs (442), and an elastic supporting piece (443) is further connected between the bottom end of the adjusting rod (444) and the installation cavity (441).

8. The V-process sand-embedding sand box mechanism based on aluminum alloy casting sand mold low-pressure casting according to claim 6, characterized in that two side walls of the adjusting groove (241) are symmetrically provided with self-locking grooves (242) matched with the self-locking lugs (442) for use.

9. The V-process sand-embedding sand box mechanism based on aluminum alloy casting sand mold low-pressure casting is characterized in that lifting adjusting assemblies (5) are further arranged on two sides of the negative pressure sand box (1), and the lifting adjusting assemblies (5) are connected with the mounting frame (41) to drive the mounting frame (41) to move up and down in the negative pressure sand box (1).

10. The V-process sand-embedding and sand-box mechanism based on aluminum alloy casting sand mold low-pressure casting is characterized in that a sand unloading mechanism is arranged in the sand unloading funnel (42), the sand unloading mechanism comprises a rotating shaft which is rotatably arranged in the sand unloading funnel, and the top end of the rotating shaft extends to the outer side of the sand unloading funnel (42) and is connected with a side frame.