CN218855599U

CN218855599U - Gravity casting mold

Info

Publication number: CN218855599U
Application number: CN202223319870.4U
Authority: CN
Inventors: 乔礼洪
Original assignee: Xiangshan Xinrui Mould Co ltd
Current assignee: Xiangshan Xinrui Mould Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-04-14
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses a gravity casting die utensil, including the die block, two first side moulds, two second side moulds, be provided with the shaping piece on the die block, the dismantlement formula is connected with the core subassembly on the shaping piece, the core subassembly includes first sand chipware, second sand chipware, two first side moulds, two second side moulds, the shaping piece, the shaping cavity of casting between the core subassembly, the second sand chipware is formed with a plurality ofly and the communicating dead head groove in casting cavity, two first side moulds are provided with the inclusion respectively and water and the holding down plate, it is provided with the installation department to water the ladle body, the installation department all offsets with the top surface of second sand chipware with holding down plate, it communicates with each other with arbitrary dead head groove to water the inclusion, the lateral wall that the casting cavity was kept away from to the second side mould sets up the connecting axle that verts. The utility model discloses compress tightly and spacing second sand core spare when the compound die, firm core subassembly and the being connected of shaping piece, the precision of its inner chamber structure improves the qualification rate of foundry goods after the guarantee foundry goods shaping.

Description

Gravity casting mold

Technical Field

The utility model relates to a casting die utensil technical field, in particular to gravity casting die utensil.

Background

At present, many processes for manufacturing a desired product from a metal material include casting, forging, extrusion, rolling, drawing, pressing, cutting, powder metallurgy, and the like. Among them, casting is the most basic, common and widespread process, and gravity casting refers to a process in which molten metal is poured into a mold under the action of the earth's gravity, which is also called casting.

Casting die utensil passes through the side form, go up mould and die block and form the casting chamber, and the casting chamber is used for forming the housing part of foundry goods, and utility model discloses a publication number is CN215998605U for example, go up mould and die block, four side modules press each other and constitute the side form, go up the mould and insert in the side form, in the die block is in the lower part of side form, the side form, go up the shaping casting cavity between mould and the die block, through will watering inclusion and all mould slopes to rotate, the metal liquid that the inclusion was watered pours into the casting cavity under earth gravity action.

When the existing casting mould is used for manufacturing castings with complex inner cavity structures such as an engine cylinder body, an airplane shell part and the like, core sand is required to be manufactured into a sand core part by using a core box, for the complex inner cavity structures, the combined forming core assembly can be sleeved on the sand core parts at different positions to form the inner cavity structures of the castings, after the castings are demoulded and taken out, sand removing operation is carried out on the castings to obtain the castings, however, when the casting mould is inclined and rotated to carry out casting operation, the mold has no limit structure, so that the core assembly is easy to shake in the casting cavity, the core assembly is easy to shake and deviate in the casting cavity, metal liquid easily flows into a gap between the sand core part and a bottom mould or a gap between two adjacent sand core parts, the accurate forming of the inner cavity structures of the castings is difficult to guarantee, and the qualification rate is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough and a gravity casting die utensil that designs of above-mentioned technique, compress tightly and spacing second sand chipware when the compound die, firm mold core subassembly and the being connected of shaping piece, its inner chamber structure's behind the guarantee foundry goods shaping precision improves the qualification rate of foundry goods.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a gravity casting mould, includes the first side form that die block, two symmetries set up, the second side form that two symmetries set up, each first side form, each the second side form all slide connect in on the die block, be provided with the shaping piece on the die block, the dismantlement formula is connected with the core subassembly on the shaping piece, the core subassembly including peg graft in first sand core piece, cover on the shaping piece are located second sand core piece on the first sand core piece, two first draw-in groove has all been seted up to the relative lateral wall bottom of first side form, two the second draw-in groove has all been seted up to the relative lateral wall bottom of second side form, first draw-in groove with the second draw-in groove all laminates mutually with the shaping piece, two first side form, two the shaping casting cavity between second side form, shaping piece, core subassembly, second sand core piece is formed with a plurality of and casting cavity communicating riser groove, two the top surface of first side form is provided with casting body and holding down plate respectively, the casting body is provided with the installation department, the installation department with the equal pressing plate with the top surface of second side casting cavity offsets the tilting casting cavity.

Preferably, the bottom die is symmetrically provided with two guide structures, and slots for the second side dies to be inserted are arranged through the guide structures.

Preferably, the positioning grooves are formed in the two opposite side walls of the guide structures, and the first side die is provided with a positioning block connected in the positioning grooves in a sliding mode.

Preferably, two the relative lateral wall of guide structure all with first side mould is inconsistent, guide structure's top is provided with the stopper, two that correspond the bottom surface of stopper with correspond the top surface of first side mould is inconsistent.

Preferably, the two limiting blocks far away from the pouring body are respectively abutted against the two sides of the lower pressing plate.

Preferably, the installation department detachable connect in the top of first side form, the confession has all been seted up to the both sides of installation department the spacing groove that the stopper slided and connects.

Preferably, the top surfaces of the opposite side walls of the two guide structures are provided with support grooves, and the top of the second sand core piece is provided with a support part inserted in the support grooves.

Preferably, the bottom die is provided with a first guide rail corresponding to the first side die, the first guide rail extends inwards to the forming block, and the bottom of the first side die is provided with a first guide block connected to the first guide rail in a sliding manner.

Preferably, the bottom die is provided with a second guide rail corresponding to the second side die, the second guide rail extends inwards to the forming block, and the bottom of the second side die is provided with a second guide block connected to the second guide rail in a sliding manner.

Preferably, the forming block is provided with a plurality of ejection holes in a penetrating manner, each ejection hole is communicated with the bottom die, an ejection plate is movably connected to the position below the bottom die and provided with an ejection pin piece inserted into the ejection hole, the top surface of the ejection pin piece is attached to the top surface of the forming block, guide posts are arranged around the ejection plate, and guide grooves for sliding connection of the guide posts are formed in the bottom surface of the bottom die.

The utility model has the advantages that: through the grafting cooperation of first sand chipware and shaping piece, can install the core subassembly on the die block, when this mould carries out the compound die, two second side moulds are close to the shaping piece, when all laminating with the shaping piece until two second draw-in grooves, the compound die action is accomplished to two second side moulds, with the fixed core subassembly of centre gripping, two first side moulds are close to the shaping piece, when all laminating with the shaping piece until two first draw-in grooves, the compound die action is accomplished to two first side moulds, in this process, ladle body and holding down plate are close to each other, the bottom surface of installation department and the bottom surface of holding down plate respectively with the top surface counterbalance of second sand chipware, the tilting connecting axle is connected with tilting gravity casting machine, can rotate this mould along the peripheral direction of tilting connecting axle, in order to pour ladle body internal metal liquid into the casting intracavity through the rising head groove under the action of gravity, compress tightly and spacing second sand chipware with the holding down plate, in order to maintain the firm of second sand chipware and the connection of shaping piece with the first sand chipware, can avoid in certain extent casting the casting subassembly is in the gravity cavity of shaking, guarantee casting, the casting precision improvement of its shaping structure of casting back casting improves the qualified foundry goods.

Drawings

FIG. 1 is a first schematic structural diagram of an embodiment;

FIG. 2 is a second schematic structural diagram of the embodiment;

FIG. 3 is a cross-sectional view of the embodiment;

fig. 4 is an exploded view of the embodiment.

In the figure: 1. bottom die; 2. a first side mold; 3. a second side mold; 4. forming a block; 5. a core assembly; 51. a first sand core member; 52. a second sand core member; 6. a first card slot; 7. a second card slot; 8. a riser groove; 9. pouring a ladle body; 10. a lower pressing plate; 11. an installation part; 12. a tilting connecting shaft; 13. a guide structure; 14. a slot; 15. positioning a groove; 16. positioning a block; 17. a limiting block; 18. a limiting groove; 19. a first guide rail; 20. a first guide block; 21. a second guide rail; 22. a second guide block; 23. a material ejection hole; 24. ejecting the plate; 25. a thimble member; 26. a guide post; 27. a guide groove; 28. a support groove; 29. a support portion.

Detailed Description

The invention is further described by the following embodiments in conjunction with the accompanying drawings.

Referring to fig. 1, 2, 3 and 4, the gravity casting mold comprises a bottom mold 1, two first side molds 2 and two second side molds 3, wherein a forming block 4 is arranged at the center of the bottom mold 1, the periphery of the forming block 4 is rectangular, the two first side molds 2 and the two second side molds 3 respectively face the peripheral side walls of the forming block 4, the two first side molds 2 are arranged by taking the forming block 4 as central symmetry, and the two second side molds 3 are arranged by taking the forming block 4 as central symmetry.

The bottom die 1 is symmetrically provided with two first guide rails 19 by taking the forming block 4 as a center, the two first guide rails 19 are positioned on the same straight line and both extend inwards to the forming block 4, and the bottom of the first side die 2 is provided with a first guide block 20 connected to the first guide rails 19 in a sliding manner so as to guide the sliding direction of the first side die 2 on the bottom die 1.

The bottom die 1 is symmetrically provided with two second guide rails 21 by taking the forming block 4 as a center, the two second guide rails 21 are positioned on the same straight line and both extend inwards to the forming block 4, the second guide rails 21 are perpendicular to the first guide rails 19, and the bottom of the second side die 3 is provided with a second guide block 22 connected to the second guide rails 21 in a sliding manner for guiding the sliding direction of the second side die 3 on the bottom die 1.

The core assembly 5 is detachably connected to the forming block 4, so as to form an inner cavity structure of a casting, the core assembly 5 comprises a first sand core element 51, a second sand core element 52 sleeved on the first sand core element 51, the first sand core element 51 and the second sand core element 52 are both made of core sand, the core sand is made of oil sand, CO2 dry sand and shell core sand, the core sand passes through a core made of a core box, and the core is high in strength, air permeability, deformability and collapsibility, and is easy to clean after the casting is formed, and details are omitted herein for the prior art. The first sand core piece 51 is inserted on the forming block 4, and when the mould is used, each first side mould 2 and each second side mould 3 are separated from the forming block 4, so that a worker can install the core assembly 5 on the bottom mould 1 through the insertion fit of the first sand core piece 51 and the forming block 4, and the preparation work of the mould is completed.

The bottom of the side wall opposite to the two first side dies 2 is provided with a first clamping groove 6, the bottom of the side wall opposite to the two second side dies 3 is provided with a second clamping groove 7, when the die is closed, the two second side dies 3 are close to the forming block 4 until the two second clamping grooves 7 are attached to the forming block 4, the two second side dies 3 complete die closing action, the corresponding two side parts of the core assembly 5 are respectively abutted to the side walls opposite to the two second side dies 3, the two second side dies 3 clamp the fixed core assembly 5, the two first side dies 2 are close to the forming block 4 until the two first clamping grooves 6 are attached to the forming block 4, the two first side dies 2 complete die closing action, the corresponding two side parts of the core assembly 5 are respectively abutted to the side walls opposite to the two first side dies 2, so that the clamping and fixing of the core assembly 5 are more stable, the two first side dies 2, the two second side dies 3, the forming block 4, a casting cavity is formed between the core assembly 5, the casting cavity is used for forming a connecting shaft of a casting, the second core assembly 52 is formed with a plurality of sand cores 8, the top surface of the casting cavity is provided with a tilting casting riser 11, and a casting cavity 10 communicated with a casting top surface of the second side die 11, and a tilting casting cavity are respectively provided with a casting riser 12.

In the process of closing the first side die 2, the ladle body 9 and the lower pressing plate 10 are close to each other, the bottom surface of the mounting portion 11 and the bottom surface of the lower pressing plate 10 are respectively abutted against the top surface of the second sand core member 52, and a worker can connect the tilting connecting shaft 12 with a driving portion of a tilting gravity casting machine, so that the tilting gravity casting machine can tilt and pour the die, and is suitable for gravity casting of complex castings. The tilting gravity casting machine can rotate the die along the peripheral direction of the tilting connecting shaft 12, after the die is closed, the die can be moved to a horizontal state integrally, the opening of the ladle body 9 faces upwards, so that a worker can pour metal liquid into the inner concave cavity of the ladle body 9, then the die can be tilted upwards by 90 degrees slowly, so that the opening of each riser groove 8 faces upwards, in the process, the metal liquid in the ladle body 9 is injected into the casting cavity through the riser groove 8 under the action of gravity, the mounting part 11 and the lower pressing plate 10 compress and limit the second sand core piece 52, the second sand core piece 52 is kept in sleeved connection with the first sand core piece 51, the die core assembly 5 is stably connected with the forming block 4, during gravity casting, the die core assembly 5 can be prevented from shaking in the casting cavity to a certain degree, the precision of the inner cavity structure of the formed casting is guaranteed, and the qualified rate of the casting is improved.

Two guide structures 13 are symmetrically arranged on the bottom die 1, support grooves 28 are formed in the top surfaces of the opposite side walls of the two guide structures 13, support portions 29 inserted into the support grooves 28 are arranged at the top of the second sand core piece 52, the inner wall of each support groove 28 abuts against the bottom of each support portion 29, a certain support effect is achieved on the second sand core piece 52, the lower pressing plate 10 and the mounting portion 11 are matched, clamping and fixing of the second sand core piece 52 are enhanced, and stability of the core assembly 5 in the casting cavity is guaranteed.

The guiding structure 13 is provided with a slot 14 for the second side mold 3 to be inserted, and the inner slot wall of the slot 14 is abutted to the second side mold 3, so that the second side mold 3 can be closed at a correct position, and the second side mold 3 is prevented from shaking when the mold tilts.

Constant head tank 15 has all been seted up to the relative lateral wall of two guide structure 13, first side mould 2 is provided with the locating piece 16 of sliding connection in constant head tank 15, the relative lateral wall of two guide structure 13 all offsets with first side mould 2, the top of guide structure 13 is provided with stopper 17, the bottom surface of two stopper 17 that correspond is inconsistent with the top surface of the first side mould 2 that corresponds, make first side mould 2 carry out the compound die action with correct position, and prevent that first side mould 2 from taking place to rock when this mould verts. Two stopper 17 of keeping away from pouring inclusion 9 are inconsistent with the both sides of holding down plate 10 respectively, guide the sliding of holding down plate 10 when the compound die, and installation department 11 detachable connects in the top of first side mould 2, and the spacing groove 18 that supplies stopper 17 to slide the connection is all seted up to the both sides of installation department 11, and spacing groove 18 provides the space of stopper 17 activity to installation department 11 removes the top surface department to second sand core piece 52.

A plurality of ejector holes 23 penetrate through the top surface of the forming block 4, each ejector hole 23 penetrates through to the bottom die 1, an ejector plate 24 is movably connected to the position below the bottom die 1, the ejector plate 24 is provided with an ejector pin piece 25 inserted in the ejector hole 23, the top surface of the ejector pin piece 25 is attached to the top surface of the forming block 4, guide columns 26 are arranged on the periphery of the ejector plate 24, a guide groove 27 for the guide columns 26 to slide and connect is formed in the bottom surface of the bottom die 1, and the guide columns 26 slide and connect in the guide groove 27 to guide the moving direction of the ejector plate 24.

When the casting is cooled and formed to be demoulded, under the guide of the two guide structures 13, the two first side dies 2 move outwards and stably, the two second side dies 3 move outwards and stably, then the ejector plate 24 is pushed upwards to be close to the bottom die 1, each ejector pin piece 25 is driven to be pushed upwards in each ejector hole 23, the formed casting is ejected, demoulding operation is completed, and then the worker desands the casting to obtain a finished casting.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. The gravity casting mold is characterized in that: the casting mold comprises a bottom mold (1), two first side molds (2) which are symmetrically arranged, two second side molds (3) which are symmetrically arranged, each first side mold (2) and each second side mold (3) are connected to the bottom mold (1) in a sliding manner, a molding block (4) is arranged on the bottom mold (1), a mold core assembly (5) is detachably connected to the molding block (4), the mold core assembly (5) comprises a first sand core piece (51) which is inserted into the molding block (4) and a second sand core piece (52) which is sleeved on the first sand core piece (51), two first clamping grooves (6) are formed in the bottom of the side wall opposite to the first side mold (2), two second clamping grooves (7) are formed in the bottom of the side wall opposite to the second side mold (3), the first clamping grooves (6) and the second clamping grooves (7) are respectively attached to the molding block (4), two first side molds (2), two second side molds (3), two mold core pieces (4) and a casting cavity (9) which is communicated with a casting molding cavity (9), and two molding grooves (9) which are formed in the casting cavity (9) and a plurality of casting mold core pieces (9), installation department (11) with holding down plate (10) all with the top surface of second sand core piece (52) is inconsistent, water the inclusion (9) with arbitrary riser groove (8) communicate with each other, the lateral wall that the casting chamber was kept away from in second side mould (3) sets up tilting connection axle (12).

2. A gravity casting mould as claimed in claim 1, wherein: two guide structures (13) are symmetrically arranged on the bottom die (1), and slots (14) for the second side dies (3) to be inserted are formed in the guide structures (13) in a penetrating mode.

3. A gravity casting mould as claimed in claim 2, wherein: two constant head tank (15) have all been seted up to lateral wall that guide structure (13) are relative, first side mould (2) be provided with slide connect in locating piece (16) in constant head tank (15).

4. A gravity casting mould as claimed in claim 2, wherein: two the relative lateral wall of guide structure (13) all with first side mould (2) are inconsistent, the top of guide structure (13) is provided with stopper (17), two of correspondence the bottom surface of stopper (17) with correspond the top surface of first side mould (2) is inconsistent.

5. A gravity casting mould as claimed in claim 4, wherein: the two limiting blocks (17) far away from the pouring body (9) are respectively abutted against the two sides of the lower pressing plate (10).

6. A gravity casting mould as claimed in claim 4, wherein: installation department (11) dismantlement formula connect in the top of first side mould (2), the confession has all been seted up to the both sides of installation department (11) spacing groove (18) that stopper (17) slided and connect.

7. A gravity casting mould as claimed in claim 2, wherein: supporting grooves (28) are formed in the top surfaces of the opposite side walls of the two guide structures (13), and supporting portions (29) inserted in the supporting grooves (28) are arranged at the tops of the second sand core pieces (52).

8. A gravity casting mould as claimed in claim 1, wherein: die block (1) corresponds first side mould (2) department is provided with first guide rail (19), first guide rail (19) inwards extend to shaping piece (4) department, the bottom of first side mould (2) be provided with slide connect in first guide block (20) on first guide rail (19).

9. A gravity casting mould according to claim 1, characterised in that: die block (1) corresponds second side mould (3) department is provided with second guide rail (21), second guide rail (21) inwards extend to shaping piece (4) department, the bottom of second side mould (3) be provided with slide connect in second guide block (22) on second guide rail (21).

10. A gravity casting mould as claimed in claim 1, wherein: the shaping piece (4) link up there are a plurality of liftout holes (23), each liftout hole (23) link up extremely die block (1) department, die block (1) below department swing joint has liftout plate (24), liftout plate (24) be provided with peg graft in thimble spare (25) in liftout hole (23), the top surface of thimble spare (25) is laminated with the top surface of shaping piece (4) mutually, be provided with guide post (26) around liftout plate (24), the confession has been seted up to the bottom surface of die block (1) guide way (27) that guide post (26) slided and connect.