CN215144585U

CN215144585U - Mold for large-area aluminum casting

Info

Publication number: CN215144585U
Application number: CN202121439993.4U
Authority: CN
Inventors: 陈晓兵
Original assignee: Dongguan Hongkai Hardware Products Co ltd
Current assignee: Dongguan Hongkai Hardware Products Co ltd
Priority date: 2021-06-26
Filing date: 2021-06-26
Publication date: 2021-12-14
Anticipated expiration: 2031-06-26

Abstract

The utility model relates to a casting moulding technical field discloses a mould for large tracts of land aluminium foundry goods, is formed by last mould and lower mould lock mutually, goes up the mould and has last die cavity, and the lower mould has lower die cavity, the bottom of going up the die cavity is equipped with the net piece that is alternately formed by plural root net twine. The cross section of the net wire is triangular. The grid sheet is formed by intersecting a plurality of grid lines parallel to the first direction and grid lines parallel to the second direction. The first direction is perpendicular to the second direction. The slope of the first or second direction relative to the sidewall of the upper cavity is 0, 15, 30, 45, 60, 75, or 90 degrees. The distances between two adjacent net wires in the first direction are sequentially arranged in a plurality of rows with large middle and small ends. The distances between two adjacent net wires in the second direction are sequentially arranged in a plurality of rows with large middle and small ends. The utility model discloses can eliminate the bad phenomena such as gas pocket of large tracts of land aluminium casting surface product.

Description

Mold for large-area aluminum casting

Technical Field

The utility model relates to a casting moulding technical field especially relates to a mould for large tracts of land aluminium casting.

Background

The die-casting of aluminum parts is a method in which molten liquid aluminum is poured into a pressure chamber of a die-casting machine, filled into a die-casting mold cavity at a high speed under the action of high pressure by the movement of an injection punch, and solidified and molded into an aluminum die-casting under pressure. The reason for the phenomenon that a plurality of air holes and slag holes exist on the surface of a large-area flat aluminum casting after the large-area flat aluminum casting is formed by die casting is that the existing die which is formed by buckling an upper die and a lower die cannot discharge air in a die cavity in time, the gas which is not discharged is attached to the inner surface of the die, and the surface of a cast product has bad phenomena of air lines, air holes, slag holes and the like. Which is a disadvantage of the existing mould.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a mould for large tracts of land aluminium foundry goods, it can eliminate unfavorable phenomena such as the gas pocket on product surface.

The technical scheme of the utility model is that: the utility model provides a mould for large tracts of land aluminium foundry goods forms by last mould and lower mould looks lock, goes up the mould and has last die cavity, and the lower mould has lower die cavity, characterized by: and a grid sheet formed by crossing a plurality of grid lines is arranged at the bottom of the upper cavity.

The cross section of the net wire is triangular.

The grid sheet is formed by intersecting a plurality of grid lines parallel to the first direction and grid lines parallel to the second direction.

The first direction is perpendicular to the second direction.

The slope of the first or second direction relative to the sidewall of the upper cavity is 0, 15, 30, 45, 60, 75, or 90 degrees.

The distances between two adjacent net wires in the first direction are sequentially arranged in a plurality of rows with large middle and small ends.

The distances between two adjacent net wires in the second direction are sequentially arranged in a plurality of rows with large middle and small ends.

The utility model discloses a mould, because the existence of the net piece in the last die cavity can hold residual gas and the aluminium sediment that the in-process produced of pouring, has eliminated the foundry goods product, and the probability of bad phenomena such as gas line, gas pocket and cinder hole appear in especially large tracts of land aluminium casting surface.

Drawings

Fig. 1 is a perspective view of the mold of the present invention.

Fig. 2 is a front view of the upper die of the present invention.

Fig. 3 is a sectional view a-a of fig. 2.

Fig. 4 is a partially enlarged view of fig. 3 at B.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings and examples.

Referring to fig. 1-4, the mold of the present invention is formed by engaging an upper mold 1 and a lower mold 2, wherein the upper mold 1 has an upper cavity 10, the lower mold 2 has a lower cavity 20, and a grid sheet 3 is disposed at the bottom of the upper cavity 10, the grid sheet is formed by a plurality of grid lines arranged in a cross manner, and the cross sections of the grid lines are triangular, so that the grid sheet has enough space to accommodate residual gas and aluminum slag. And unlike the existing mold, the residual gas and the aluminum slag can only attach to the surface of the product, which causes the appearance of defective products, the utility model discloses a mold overcomes the defect that the existing mold pours the large-area aluminum casting finished product.

The arrangement direction of the net lines is related to the air flow in the upper cavity and the lower cavity, the net lines mainly extend along two directions, namely a first direction and a second direction, and the grid sheet is formed by intersecting a plurality of net lines parallel to the first direction and net lines parallel to the second direction.

Preferably, the first direction is perpendicular to the second direction.

Preferably, the slope of the first or second direction with respect to the sidewall of the upper cavity is 0 degrees, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, or 90 degrees.

Furthermore, the distance between adjacent wires is also related to the air flow in the upper and lower cavities,

preferably, the distances between two adjacent net wires in the first direction are arranged in sequence, and the net wires are arranged in rows with a large middle and small ends.

Preferably, the distances between two adjacent second-direction net wires are arranged in sequence, and the two adjacent second-direction net wires are arranged in a plurality of rows with a large middle and small ends.

Thus, the adverse effect of the air holes on the surface quality of the product can be overcome to the maximum extent.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a mould for large tracts of land aluminium foundry goods forms by last mould and lower mould looks lock, goes up the mould and has last die cavity, and the lower mould has lower die cavity, characterized by: and a grid sheet formed by crossing a plurality of grid lines is arranged at the bottom of the upper cavity.

2. A mold for large area aluminum castings according to claim 1, characterized by: the cross section of the net wire is triangular.

3. A mold for large area aluminum castings according to claim 2, characterized by: the grid sheet is formed by intersecting a plurality of grid lines parallel to the first direction and grid lines parallel to the second direction.

4. A mold for large area aluminum castings according to claim 3, characterized by: the first direction is perpendicular to the second direction.

5. A mold for large area aluminum castings according to claim 4, characterized by: the slope of the first or second direction relative to the sidewall of the upper cavity is 0, 15, 30, 45, 60, 75, or 90 degrees.

6. A mold for large area aluminum castings according to claim 4, characterized by: the distances between two adjacent net wires in the first direction are sequentially arranged in a plurality of rows with large middle and small ends.

7. A mold for large area aluminum castings according to claim 4, characterized by: the distances between two adjacent net wires in the second direction are sequentially arranged in a plurality of rows with large middle and small ends.