CN217044496U

CN217044496U - Aluminum alloy trachea dysmorphism boss is prevented contracting pine casting mould

Info

Publication number: CN217044496U
Application number: CN202220345528.2U
Authority: CN
Inventors: 刘庚; 白志红; 吴兴阳; 程刚
Original assignee: Tianjin Hangyu Jiarui Co ltd
Current assignee: Tianjin Hangyu Jiarui Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-07-26
Anticipated expiration: 2032-02-21

Abstract

The utility model relates to an aluminum alloy trachea dysmorphism boss anti-shrinkage pine casting mould, comprises an upper die, the lower mould, the psammitolite, all be equipped with ejection mechanism on last mould and the lower mould, be equipped with the pouring basin that corresponds with two pipe orifices departments of trachea on the lower mould, be equipped with a plurality of horizontal pipe orifice on last mould and the lower mould, the cooling water pipe has been laid in the pipe orifice, the psammitolite is arranged in the cavity behind mould and the lower mould compound die, and the space between psammitolite and the cavity inner wall is the product die cavity, be equipped with the recess one that corresponds with trachea dysmorphism boss department on the mould, recess one interpolation is equipped with the sand mould loose piece, be equipped with the pore that corresponds with trachea dysmorphism boss department in the sand mould loose piece, sand mould loose piece top is equipped with the dark rising head of heat preservation, the dark rising head of heat preservation and pore intercommunication, be equipped with the recess two that corresponds with the dark rising head of heat preservation in the recess one. The utility model provides a regional shrinkage porosity's of dysmorphism boss problem when aluminum alloy trachea casting, be convenient for improve the product percent of pass.

Description

Aluminum alloy trachea dysmorphism boss is prevented shrink pine and is cast mould

Technical Field

The utility model relates to a casting field especially relates to an aluminum alloy trachea dysmorphism boss is prevented contracting pine casting mould.

Background

In the field of aluminum alloy casting, the most economical method for manufacturing aluminum alloy castings is metal mold gravity casting, when the aluminum alloy air pipe product is produced, for the air pipe with a special-shaped boss, the shape of the boss of the casting and the peripheral area is changed suddenly during casting, shrinkage porosity is serious at the position during casting, feeding heads added in a conventional mode are not feasible, the feeding heads cover the surface due to the complex shape, the shape cannot be recovered after casting, the product quality is influenced, and the product percent of pass is low.

Disclosure of Invention

The utility model aims at solving the defects of the prior art and provides an aluminum alloy trachea dysmorphism boss shrinkproof loose casting mould.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides an aluminum alloy trachea dysmorphism boss anti-shrinkage-loosening casting mould, which comprises an upper die, the lower mould, the psammitolite, all be equipped with ejection mechanism on last mould and the lower mould, be equipped with the pouring basin that corresponds with two pipe openings of trachea department on the lower mould, be equipped with a plurality of horizontal pipeline holes on last mould and the lower mould, the downthehole cooling water pipe that has laid of pipeline, the psammitolite is arranged in the cavity after mould and lower mould compound die in, and the space between psammitolite and the cavity inner wall is the product die cavity, be equipped with the recess one that corresponds with trachea dysmorphism boss department in going up the mould, the interpolation of recess one is equipped with the sand mould loose piece, be equipped with the dark rising head that keeps warm in the sand mould loose top, keep warm dark rising head and pore intercommunication, be equipped with the recess two that correspond with the dark rising head that keeps warm in the recess one.

The ejection mechanism comprises a base arranged at two ends of the back separating surface of the upper die and the lower die, a guide column arranged at four corners of the back separating surface of the upper die and the lower die, a ejector rod plate and a pressing plate which are sleeved on the guide column, and a plurality of ejector rods inserted on the ejector rod plate, wherein the guide column is positioned on the inner side of the base, the upper die and the lower die are provided with through holes corresponding to the ejector rods, the pressing plate is positioned on the outer side of the ejector rod plate, the ejector rods are sleeved with springs, and the springs are positioned on the inner side of the ejector rod plate.

Particularly, the edge of the top of the lower die is provided with a plurality of positioning holes, the upper die is provided with positioning columns corresponding to the positioning holes, and the positioning columns are inserted into the positioning holes when the upper die and the lower die are closed.

The beneficial effects of the utility model are that: the utility model discloses a set up sand mould loose piece and heat preservation blind riser to and set up the inside feeding hole way at the sand mould loose piece, when making the casting, aluminium liquid is convenient for flow to following the passageway broad area, both can remain the product shape and can play the feeding effect again, avoid the inside shrinkage porosity of product boss, improve the product percent of pass, and it is ejecting to be convenient for through ejection mechanism after the casting is accomplished, the blind riser that keeps warm simultaneously has certain heat preservation effect, avoid aluminium liquid to cool off fast, be favorable to the feeding.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the position of the ejection mechanism of the present invention;

FIG. 3 is a schematic diagram of the ejector pin plate structure of the present invention;

FIG. 4 is a schematic view of the structure of the air tube, and the protrusion on the top of the air tube is a special-shaped boss;

fig. 5 is a schematic diagram of the position of the product cavity of the present invention;

FIG. 6 is a schematic view of the positions of the lower mold and the sand core of the present invention;

FIG. 7 is a schematic view of the positions of the air pipe and the sand mold loose piece of the present invention;

FIG. 8 is a schematic diagram of a first groove and a second groove of the present invention;

FIG. 9 is a schematic view of a sand mold loose piece structure of the present invention;

in the figure: 1-upper mould; 11-groove one; 12-groove two; 13-a positioning column; 2-lower mould; 21-positioning holes; 3-sand core; 31-sand mould loose pieces; 32-pore channels; 33-insulating blind riser; 4-an ejection mechanism; 41-a base; 42-a guide post; 43-ejector plate; 44-a platen; 45-ejector pin; 5-air pipe; 6-pouring cup; 7-a pipe bore; 8-product cavity;

the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

as shown in fig. 1-9, an aluminum alloy trachea dysmorphism boss anti-shrink pine casting mould, including last mould 1, lower mould 2, psammitolite 3, it all is equipped with ejection mechanism 4 on last mould 1 and the lower mould 2, ejection mechanism 4 is including locating the base 41 of the back facies both ends of last mould 1 and lower mould 2, locate the guide post 42 of the back facies four corners department of last mould 1 and lower mould 2, establish ejector pin board 43 and the clamp plate 44 on guide post 42 in the cover, a plurality of ejector pins 45 of establishing on ejector pin board 43 of inserting, guide post 42 is located the base 41 inboard, upward be equipped with the perforation that corresponds with ejector pin 45 on mould 1 and the lower mould 2, clamp plate 44 is located the ejector pin board 43 outside, the cover is equipped with the spring on the ejector pin 45, the spring is located ejector pin board 43 inboard. After the casting is finished, the ejector rod plate 43 is pushed to move by pushing the pressing plate 44, the ejector rod plate 43 drives the ejector rod 45 to move so as to eject the casting out of the mold, and the casting is convenient to eject.

Be equipped with the pouring basin 6 that corresponds with two pipe connections of trachea 5 on the lower mould 2, aluminium liquid gets into in the mould through pouring basin 6 during the casting, be equipped with a plurality of horizontal pipeline holes 7 on last mould 1 and the lower mould 2, cooling tube has been laid in the pipeline hole 7, after the casting is accomplished, the cooling water circulates in cooling tube, cool down the mould, accelerate the product shaping, psammitolite 3 is arranged in the cavity behind the compound die of last mould 1 and lower mould 2, and the space between psammitolite 3 and the cavity inner wall is product die cavity 8, trachea 5 is shaping in product die cavity 8.

The edge of the top of the lower die 2 is provided with a plurality of positioning holes 21, the upper die 1 is provided with positioning columns 13 corresponding to the positioning holes 21, the positioning columns 13 are inserted into the positioning holes 21 when the upper die 1 and the lower die 2 are closed, and the positioning holes 21 and the positioning columns 13 are arranged, so that the upper die 1 and the lower die 2 are closed accurately.

The upper die 1 is internally provided with a first groove 11 corresponding to the special-shaped boss of the air pipe 5, a sand mold loose piece 31 is inserted in the first groove 11, a pore 32 corresponding to the special-shaped boss of the air pipe 5 is arranged in the sand mold loose piece 31, the top of the sand mold loose piece 31 is provided with a heat insulation blind riser 33, the heat insulation blind riser 33 can be made of heat insulation materials such as asbestos, ceramic cotton, perlite and the like, the heat insulation blind riser 33 is communicated with the pore 32, a second groove 12 corresponding to the heat insulation blind riser 33 is arranged in the first groove 11, during casting, the special-shaped boss of the air pipe 5 is formed at the position of the sand mold loose piece 31, the heat insulation blind riser 33 is arranged to facilitate aluminum liquid feeding, the aluminum liquid flows to a wide area below along the pore 32, the product shape can be kept, the feeding effect can be achieved, shrinkage in the boss of the product is avoided, the qualification rate of the product is improved, meanwhile, the heat insulation blind riser 33 has a certain heat insulation effect, and the aluminum liquid is prevented from being rapidly cooled, the sand mould loose piece 31 and the heat insulation blind riser 33 are arranged, the structure is simple, the operation is convenient, no additional influence is caused to the production process, and the shrinkage porosity problem of the castings can be well prevented.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. A shrinkage-loosening-preventing casting mold for an aluminum alloy air pipe special-shaped boss comprises an upper mold (1), a lower mold (2) and a sand core (3), and is characterized in that ejection mechanisms (4) are arranged on the upper mold (1) and the lower mold (2), a sprue cup (6) corresponding to two pipe openings of an air pipe (5) is arranged on the lower mold (2), a plurality of transverse pipeline holes (7) are arranged on the upper mold (1) and the lower mold (2), cooling water pipes are laid in the pipeline holes (7), the sand core (3) is arranged in a cavity formed after the upper mold (1) and the lower mold (2) are assembled, a gap between the sand core (3) and the inner wall of the cavity is a product cavity (8), a groove I (11) corresponding to the special-shaped boss of the air pipe (5) is arranged in the upper mold (1), a sand mold loose piece (31) is inserted in the groove I (11), a pore (32) corresponding to the special-shaped boss of the air pipe (5) is arranged in the sand mold loose piece (31), a heat-insulating blind riser (33) is arranged at the top of the sand mould loose piece (31), the heat-insulating blind riser (33) is communicated with the pore canal (32), and a second groove (12) corresponding to the heat-insulating blind riser (33) is arranged in the first groove (11).

2. The aluminum alloy trachea special-shaped boss shrink-proof casting mold according to claim 1, wherein the ejection mechanism (4) comprises bases (41) arranged at two ends of opposite surfaces of the upper mold (1) and the lower mold (2), guide columns (42) arranged at four corners of opposite surfaces of the upper mold (1) and the lower mold (2), ejector rod plates (43) and pressing plates (44) sleeved on the guide columns (42), a plurality of ejector rods (45) inserted in the ejector rod plates (43), the guide columns (42) are arranged on the inner sides of the bases (41), through holes corresponding to the ejector rods (45) are formed in the upper mold (1) and the lower mold (2), the pressing plates (44) are arranged on the outer sides of the ejector rod plates (43), springs are sleeved on the ejector rods (45), and the springs are arranged on the inner sides of the ejector rod plates (43).

3. The aluminum alloy trachea profile boss shrink-proof casting die as claimed in claim 2, wherein the top edge of the lower die (2) is provided with a plurality of positioning holes (21), the upper die (1) is provided with positioning columns (13) corresponding to the positioning holes (21), and the positioning columns (13) are inserted into the positioning holes (21) when the upper die (1) and the lower die (2) are closed.