CN114951603A

CN114951603A - Thin-wall aluminum alloy shell low-pressure pouring device

Info

Publication number: CN114951603A
Application number: CN202210598026.5A
Authority: CN
Inventors: 周和应; 丁永超; 范国勇
Original assignee: Zhejiang Xinfeng Machinery Co ltd
Current assignee: Zhejiang Xinfeng Machinery Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-08-30

Abstract

The invention discloses a thin-wall aluminum alloy shell low-pressure pouring device which comprises a device body, wherein the device body comprises a base, an upper die and a lower die are arranged on the base, a die cavity is formed between the upper die and the lower die in a clamping mode, a vacuumizing assembly and an air inlet pipe are arranged on the upper die, a pouring gate is arranged in the upper die, a heating pipe is arranged on the lower die, the upper die and the lower die are fixedly connected through a fixing piece, the vacuumizing assembly comprises an exhaust hole, a connecting pipe and an exhaust pipe, the fixing piece comprises a first fixing block, a second fixing block, a connecting piece, a chain and a bolt, the device achieves the purpose of casting a thin-wall part at low pressure through the matching of the vacuumizing assembly, the heating pipe and the air inlet pipe, and solves the problem that the thin-wall part is difficult to form when traditional low-pressure casting equipment is used for production.

Description

Thin-wall aluminum alloy shell low-pressure pouring device

Technical Field

The invention belongs to the field of low-pressure casting equipment, and particularly relates to a thin-wall aluminum alloy shell low-pressure casting device.

Background

The casting equipment of the thin-wall aluminum alloy shell comprises high-pressure casting equipment and low-pressure casting equipment, wherein the pressure value of the high-pressure casting equipment is generally 2500T-3000T, the price of the high-pressure casting equipment is about 800-1000 ten thousand, the pressure of the low-pressure casting equipment is generally only 1200mba at most, and the price of the low-pressure casting equipment is about 80 ten thousand;

if a high-pressure casting device is adopted to produce the thin-wall part, the problem of high equipment price exists, and the produced thin-wall part cannot be subjected to T6 heat treatment;

if the traditional low-pressure casting equipment is adopted to produce the thin-wall part, the problem of difficult thin-wall part forming exists.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a thin-wall aluminum alloy shell low-pressure pouring device, and in order to achieve the aim, the invention adopts the technical scheme that:

the utility model provides a thin wall aluminum alloy casing low pressure pouring device, includes the device body, the device body includes the base, be provided with the lower mould on the base and go up the mould, go up mould and lower mould fixedly connected with mounting, the bottom of going up the mould and the top centre gripping of lower mould form the mould die cavity, upward be equipped with the evacuation subassembly that is linked together with the mould die cavity on the mould, be equipped with the electrothermal tube in the lower mould, upward be equipped with the intake pipe that is linked together with the mould die cavity on the mould, go up the interior sprue gate that still is equipped with and communicates with the mould die cavity of going up the mould.

Preferably, the vacuumizing assembly comprises an exhaust hole, a connecting pipe and an exhaust pipe, the exhaust hole is communicated with the mold cavity, the connecting pipe and the exhaust pipe are both arranged in the upper mold, the connecting pipe is communicated with the exhaust hole, and the exhaust pipe is communicated with the connecting pipe.

Preferably, the mounting includes fixed block one, fixed block two, connection piece, chain and bolt, fixed block one is fixed on the lateral wall of lower mould, fixed block two is the U type and fixes on the lateral wall of last mould, the first half block of fixed block one is on fixed block two, and the quantity of connection piece is 2, and the connection piece that is located the below is fixed on the lateral wall of fixed block one, and the connection piece that is located the top passes through the bolt fastening on the lateral wall of fixed block one, the bolt passes fixed block one and fixed block two and last mould threaded connection.

Preferably, the fixing parts are respectively fixed on the two opposite side walls of the lower die and the upper die at the junctions of the two ends.

The invention has the beneficial effects that:

compared with high-pressure casting equipment, the device has the advantage of low price, and can reduce the production cost of enterprises; when the thin-wall part is formed, the air inlet pipe is used for inflating and pressurizing the cavity of the die, the vacuumizing assembly discharges a part of air pressure in the cavity of the die to maintain the air pressure in the cavity of the die, and the electric heating pipe heats the die to prevent aluminum alloy liquid in the cavity of the die from being cooled and solidified when the die is not formed, so that the aim of casting the thin-wall part at low pressure is fulfilled; the thin-wall part produced by the device can be subjected to T6 heat treatment, and the mechanical property of the thin-wall part subjected to the heat treatment can be improved by 20-30%.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is an enlarged view of FIG. 1;

FIG. 3 is a sectional view of the upper mold;

fig. 4 is a top view of the upper die.

In the figure, 1-device body, 2-base, 3-lower die, 4-upper die, 5-die cavity, 6-vacuum-pumping component, 61-exhaust hole, 62-connecting pipe, 63-exhaust pipe, 7-electric heating pipe, 8-fixing piece, 81-first fixing block, 82-second fixing block, 83-connecting piece, 84-chain, 85-bolt, 9-air inlet pipe and 10-pouring gate.

Detailed Description

In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and embodiments.

As shown in fig. 1-4, a thin-wall aluminum alloy shell low-pressure pouring device comprises a device body 1, the device body 1 comprises a base 2, a lower die 3 and an upper die 4 are arranged on the base 2, the upper die 4 and the lower die 3 are fixed through 4 fixing pieces 8 with the same structure, the bottom of the upper die 4 and the top of the lower die 3 are clamped to form a die cavity 5, a vacuumizing assembly 6 communicated with the die cavity 5 is arranged on the upper die 4, an electric heating tube 7 is arranged in the lower die 3, an air inlet tube 9 communicated with the die cavity 5 is arranged on the upper die 4, and a pouring gate 10 communicated with the die cavity 5 is further arranged in the upper die 4.

The vacuumizing assembly 6 comprises an exhaust hole 61, a connecting pipe 62 and an exhaust pipe 63, the exhaust hole 61 is communicated with the mold cavity 5, the connecting pipe 62 and the exhaust pipe 63 are both arranged in the upper mold 4, the connecting pipe 62 is communicated with the exhaust hole 61, and the exhaust pipe 63 is communicated with the connecting pipe 62.

The fixing part 8 comprises a first fixing block 81, a second fixing block 82, connecting pieces 83, a chain 84 and bolts 85, the first fixing block 81 is fixed on the side wall of the lower die 3, the second fixing block 82 is U-shaped and fixed on the side wall of the upper die 4, the upper half part of the first fixing block 81 is clamped on the second fixing block 82, the number of the connecting pieces 83 is 2, the connecting pieces 83 located below are fixed on the side wall of the first fixing block 81, the connecting pieces 83 located above are fixed on the side wall of the first fixing block 81 through the bolts 85, the bolts 85 penetrate through the first fixing block 81 and the second fixing block 82 and are in threaded connection with the upper die 4, when the fixing part 8 is used, the bolts 85 are unscrewed, the first fixing block 81 is taken down from the fixing block 82, the upper die 4 is moved upwards, then the cast thin-wall part is taken out, and the chain 84 can avoid the loss of the connecting pieces 83 and the bolts 85 located above when the bolts 85 are taken out, thereby affecting production efficiency.

The working principle of the invention is as follows:

when the device is used, aluminum alloy liquid enters the die cavity 5 through the pouring gate 10, the air inlet pipe 9 starts to inflate and pressurize the die cavity 5, redundant air in the die cavity 5 enters the connecting pipe 62 through the air exhaust hole 61 and then is exhausted out of the device through the air exhaust pipe 63, so that the air pressure in the die cavity 5 is kept not higher than 1200mba during casting, the heating pipe 7 continuously heats the die in the die cavity 5, cooling solidification before die forming is avoided, the forming rate of the die is improved, after the die is formed, the bolt 85 is unscrewed, the first fixing block 81 is taken down from the fixing block 82, the upper die 4 is moved upwards, and then the cast thin-wall part is taken out.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a thin wall aluminum alloy casing low pressure pouring device, includes device body (1), its characterized in that: device body (1) includes base (2), be provided with lower mould (3) on base (2) and go up mould (4), go up mould (4) and lower mould (3) fixedly connected with mounting (8), the bottom of going up mould (4) and the top centre gripping of lower mould (3) form mould cavity (5), upward be equipped with evacuation subassembly (6) that are linked together with mould cavity (5) on mould (4), be equipped with electrothermal tube (7) in lower mould (3), upward be equipped with intake pipe (9) that are linked together with mould cavity (5) on mould (3), still be equipped with sprue gate (10) that communicate with mould cavity (5) in last mould (4).

2. The low pressure casting apparatus for thin wall aluminum alloy shell according to claim 1, wherein: evacuation subassembly (6) are including exhaust hole (61), connecting pipe (62) and blast pipe (63), exhaust hole (61) are linked together with mould cavity (5), and connecting pipe (62) and blast pipe (63) all set up in last mould (4), connecting pipe (62) are linked together with exhaust hole (61), blast pipe (63) are linked together with connecting pipe (62).

3. The low pressure casting apparatus for thin wall aluminum alloy shell according to claim 1, wherein: mounting (8) are including fixed block one (81), fixed block two (82), connection piece (83), chain (84) and bolt (85), fixed block one (81) are fixed on the lateral wall of lower mould (3), fixed block two (82) are the U type and fix on the lateral wall of last mould (4), the first block of fixed block one (81) is on fixed block two (82), and the quantity of connection piece (83) is 2, and connection piece (83) that are located the below are fixed on the lateral wall of fixed block one (81), and connection piece (83) that are located the top are fixed on the lateral wall of fixed block one (81) through bolt (85), bolt (85) pass fixed block one (81) and fixed block two (82) and go up mould (4) threaded connection.

4. The low pressure casting apparatus for thin wall aluminum alloy shell according to claim 3, wherein: and fixing pieces (8) are respectively fixed on two opposite side walls of the lower die (3) and the upper die (4) at junctions of two ends.