CN211248275U

CN211248275U - Low-pressure casting die for aluminum alloy brake cylinder body for subway

Info

Publication number: CN211248275U
Application number: CN201922107532.6U
Authority: CN
Inventors: 季石华; 曾礼
Original assignee: Zhejiang Tuokas Technology Co ltd
Current assignee: Zhejiang Tuokas Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-14
Anticipated expiration: 2029-11-29

Abstract

The utility model relates to an aluminum alloy brake cylinder body low pressure casting mould for subway has four bosss along circumference equipartition in the brake cylinder body periphery, and casting mould includes module and lower module, goes up the module and installs the mold core below, the module has lower die cavity down, and when last module and lower module cooperation were in the same place, it is located lower die cavity to go up the mold core to and form the die cavity that is used for forming the brake cylinder body down between the die cavity, the bottom surface department of going up the module sets up four feeding indent risers that are used for playing the feeding effect to four bosss on the brake cylinder body. The bottom surface department of going up the module sets up four feeding indent rising heads that are used for playing the feeding effect to four bosss on the braking cylinder body, has improved the casting quality of braking cylinder body, in addition, has two reposition of redundant personnel runners on the well pouring cup apron, enables the die cavity of quick and evenly filling of molten metal, has improved production efficiency.

Description

Low-pressure casting die for aluminum alloy brake cylinder body for subway

Technical Field

The utility model relates to a mould field, specifically say, relate to an aluminum alloy braking cylinder body low pressure casting mould for subway.

Background

The aluminum alloy brake cylinder body for the subway is required to have higher strength, and cracks can not occur in the using process, so that the brake cylinder body is required to have good casting quality, but the quality of the brake cylinder body produced by casting is poor due to the unreasonable structural design of the existing casting mold, so that the brake cylinder body is very easy to crack, damage and the like in the using process, and therefore, the existing casting mold for the brake cylinder body needs to be improved and optimized.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design reasonable, can produce the casting mould of good quality's aluminum alloy braking cylinder body for subway.

The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides an aluminum alloy braking cylinder body low pressure casting mould for subway has four bosss along the circumference equipartition in the braking cylinder body periphery, the casting mould includes module and lower module, its characterized in that: the mould comprises an upper mould core and a lower mould core, wherein the upper mould core is arranged below the upper mould block, the lower mould block is provided with a lower mould cavity, when the upper mould block and the lower mould block are matched together, the upper mould core is positioned in the lower mould cavity and forms a mould cavity for forming a brake cylinder body between the upper mould core and the lower mould cavity, and four feeding concave risers for feeding four bosses on the brake cylinder body are arranged at the bottom surface of the upper mould block.

Preferably, an asbestos heat-insulating sleeve which plays a heat-insulating role is sleeved in the feeding concave riser.

Preferably, the low-pressure casting die for the aluminum alloy brake cylinder body for the subway further comprises a pushing structure, wherein the pushing structure comprises an upper top plate, a push rod mounting plate, a push rod and a reset guide rod; the upper top plate is connected with the ejector rod mounting plate, and the ejector rod and the reset guide rod are both mounted on the ejector rod mounting plate; the four reset guide rods are distributed and installed at four corners of the ejector rod installation plate, and the lower ends of the reset guide rods penetrate through the upper module and then are in contact with the parting surface of the lower module; the ejector rods are arranged at the positions, where the die of the casting is easy to clamp, of the plurality of ejector rods, and the lower ends of the ejector rods penetrate through the upper die block.

Preferably, the low-pressure casting die for the aluminum alloy brake cylinder body for the subway further comprises an air cooling pipe for ventilating cooling air and cooling the upper die core, wherein the air cooling pipe is installed on the upper die block, and one end of the air cooling pipe penetrates through the upper die block and then extends into the upper die core.

Preferably, the low-pressure casting mold for the aluminum alloy brake cylinder body for the subway further comprises a middle pouring cup, the middle pouring cup is installed below the lower mold block, the bottom of the middle pouring cup is provided with a main pouring gate, the top of the middle pouring cup is covered with a middle pouring cup cover plate, the middle pouring cup cover plate is provided with two shunt pouring gates, and the shunt pouring gates are communicated with the lower mold cavity.

Preferably, the bottom surface of the upper module is provided with three mold closing positioning columns, and the top surface of the lower module is provided with positioning holes for matching the mold closing positioning columns and enabling the mold closing positioning columns to extend into.

Compared with the prior art, the utility model, have following advantage and effect: the bottom surface department of going up the module sets up four feeding indent rising heads that are used for playing the feeding effect to four bosss on the braking cylinder body, has improved the casting quality of braking cylinder body, in addition, has two reposition of redundant personnel runners on the well pouring cup apron, enables the die cavity of quick and evenly filling of molten metal, has improved production efficiency.

Drawings

In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a braking cylinder cast in the embodiment of the present invention.

Fig. 3 is a schematic front view structure diagram of the embodiment of the present invention.

Fig. 4 is a schematic top view of an embodiment of the present invention.

Fig. 5 is a schematic sectional view along a-a in fig. 4.

Fig. 6 is a schematic perspective view of an upper module in an embodiment of the present invention.

Fig. 7 is a schematic bottom view of the structure of fig. 6.

Fig. 8 is a schematic perspective view of a lower module in an embodiment of the present invention.

Fig. 9 is a schematic perspective view of a pouring cup in an embodiment of the present invention.

Fig. 10 is another perspective view of the pouring cup in the embodiment of the present invention.

Description of reference numerals: the device comprises an upper module 1, an upper die core 11, a feeding concave riser 12, an asbestos insulation sleeve 13, a combined positioning column 14, a lower module 2, a lower die cavity 21, a positioning hole 22, an upper top plate 3, a push rod mounting plate 4, a push rod 5, a reset guide rod 6, an air cooling pipe 7, a pouring cup 8, a main pouring gate 81, a pouring cup cover plate 9 and a shunt pouring gate 91.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

Examples are given.

See fig. 1-10.

The embodiment discloses an aluminum alloy brake cylinder body low pressure casting mould for subway, four bosses are evenly distributed along the circumference on the periphery of a brake cylinder body (refer to fig. 2), each boss corresponds to a riser boss, and the casting mould comprises an upper module 1, a lower module 2, a pushing structure, a middle pouring cup 8 and an air cooling pipe 7.

In this embodiment, an upper mold core 11 is installed below the upper mold block 1, the lower mold block 2 has a lower mold cavity 21, when the upper mold block 1 and the lower mold block 2 are matched together, the upper mold core 11 is located in the lower mold cavity 21, a mold cavity for forming a brake cylinder body is formed between the upper mold core 11 and the lower mold cavity 21, and four feeding concave risers 12 for feeding four bosses on the brake cylinder body are arranged at the bottom surface of the upper mold block 1. An asbestos insulation sleeve 13 playing a role in insulation is sleeved in the feeding concave riser 12, the insulation effect of the asbestos insulation sleeve 13 can increase the feeding effect, and the quality of a casting is improved.

In this embodiment, three mold closing positioning pillars 14 are installed on the bottom surface of the upper module 1, and a positioning hole 22 for matching the mold closing positioning pillar 14 and extending the mold closing positioning pillar 14 is opened on the top surface of the lower module 2.

In this embodiment, the pushing structure includes an upper top plate 3, a push rod mounting plate 4, a push rod 5 and a reset guide rod 6; go up roof 3 and ejector pin mounting panel 4 and be connected, ejector pin 5 and reset guide bar 6 are all installed on ejector pin mounting panel 4. The reset guide rods 6 are four in number, are distributed and installed at four corners of the ejector rod installation plate 4, and the lower ends of the reset guide rods 6 are contacted with the parting surfaces of the lower die block 2 after penetrating through the upper die block 1. Ejector pin 5 sets up many, sets up the position at the easy card mould of foundry goods, and the lower extreme of ejector pin 5 passes upper die piece 1, treats braking cylinder body shaping back, promotes roof 3 downwards to drive ejector pin 5 and remove downwards, will brake the cylinder body and go up the mould core 11 and carry out the drawing of patterns.

In this embodiment, the air-cooling pipe 7 is installed on the upper module 1, and one end thereof penetrates through the upper module 1 and then extends into the upper mold core 11. The air-cooling pipe 7 is used for supplying cooling air to cool the upper mold core 11, so that the formed brake cylinder body and the upper mold core 11 are easier to separate.

In this embodiment, the tundish 8 is mounted below the lower mold block 2, the bottom of the tundish 8 has a main gate 81, the top of the tundish 8 is covered by a tundish cover 9, the tundish cover 9 has two split gates 91, and the split gates 91 are connected to the lower mold cavity 21. The two shunting gates 91 can enable molten metal to quickly and uniformly fill the cavity, and production efficiency is improved.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the patent idea of the utility model are included in the protection scope of the patent of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an aluminum alloy braking cylinder body low pressure casting mould for subway has four bosss along the circumference equipartition in the braking cylinder body periphery, the casting mould includes module (1) and lower module (2), its characterized in that: the brake cylinder is characterized in that an upper mold core (11) is installed below the upper mold block (1), the lower mold block (2) is provided with a lower mold cavity (21), when the upper mold block (1) and the lower mold block (2) are matched together, the upper mold core (11) is located in the lower mold cavity (21) and forms a mold cavity for forming a brake cylinder body with the lower mold cavity (21), and four feeding concave risers (12) used for feeding four bosses on the brake cylinder body are arranged at the bottom surface of the upper mold block (1).

2. The aluminum alloy brake cylinder low-pressure casting mold for subways as recited in claim 1, wherein: an asbestos heat-insulating sleeve (13) which plays a role in heat insulation is sleeved in the feeding concave riser (12).

3. The aluminum alloy brake cylinder low-pressure casting mold for subways as recited in claim 1, wherein: the pushing structure comprises an upper top plate (3), a push rod mounting plate (4), a push rod (5) and a reset guide rod (6); the upper top plate (3) is connected with the ejector rod mounting plate (4), and the ejector rod (5) and the reset guide rod (6) are both mounted on the ejector rod mounting plate (4); the four reset guide rods (6) are arranged and distributed at the four corners of the ejector rod mounting plate (4), and the lower ends of the reset guide rods (6) penetrate through the upper module (1) and then contact with the parting surface of the lower module (2); the ejector rods (5) are arranged at the positions of the castings, which are easy to clamp the die, and the lower ends of the ejector rods (5) penetrate through the upper die block (1).

4. The aluminum alloy brake cylinder low-pressure casting mold for subways as recited in claim 1, wherein: the cooling device is characterized by further comprising an air cooling pipe (7) used for ventilating cooling air and cooling the upper mold core (11), wherein the air cooling pipe (7) is installed on the upper module (1), and one end of the air cooling pipe penetrates through the upper module (1) and then extends into the upper mold core (11).

5. The aluminum alloy brake cylinder low-pressure casting mold for subways as recited in claim 1, wherein: the pouring cup structure is characterized by further comprising a pouring cup (8), wherein the pouring cup (8) is installed below the lower die block (2), the bottom of the pouring cup (8) is provided with a main pouring gate (81), the top of the pouring cup (8) is covered with a pouring cup cover plate (9), the pouring cup cover plate (9) is provided with two shunt pouring gates (91), and the shunt pouring gates (91) are communicated with the lower die cavity (21).

6. The aluminum alloy brake cylinder low-pressure casting mold for subways as recited in claim 1, wherein: three mold closing positioning columns (14) are arranged on the bottom surface of the upper module (1), and positioning holes (22) used for being matched with the mold closing positioning columns (14) and enabling the mold closing positioning columns (14) to extend into are formed in the top surface of the lower module (2).