CN219274437U

CN219274437U - High-pressure casting die for long cylinder cavity structure casting

Info

Publication number: CN219274437U
Application number: CN202320115160.5U
Authority: CN
Inventors: 张殿平; 李惠东; 王正军
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-06-30
Anticipated expiration: 2033-01-17

Abstract

The utility model provides a high-pressure casting die for a long cylinder cavity casting, which aims to solve the problems of difficult air holding and removal and easy air wrapping defect, and comprises an upper die holder, a middle die plate and a lower die holder which are sequentially arranged from top to bottom, wherein an upper male die is fixedly connected below the upper die holder, middle female dies and lower female dies are respectively arranged in the middle of the middle die plate and the lower die holder, a long cylinder cavity with a cylindrical structure is formed between the upper male die and the middle female dies and between the lower female dies, an air collecting cavity and an air exhausting groove are arranged on the upper male die, the cylinder cavity is coaxially arranged at the middle lower part in the upper male die, a plurality of groups of air exhausting grooves are arranged at intervals along the circumferential direction of the long cylinder cavity, the heights of the air exhausting grooves are distributed along the height direction of the air collecting cavity, the inner end and the outer end of each air exhausting groove are respectively communicated with the air collecting cavity and the long cylinder cavity, and the air in serious area of the long cylinder cavity can be effectively guided into the air collecting cavity through the plurality of groups of the air exhausting grooves, the air collecting cavity can be accepted in a larger range, the air content of the casting can be reduced, and the porosity of the casting can be reduced.

Description

High-pressure casting die for long cylinder cavity structure casting

Technical Field

The utility model relates to the technical field of dies, in particular to a high-pressure casting die for a long cylinder cavity structure casting.

Background

Pressure casting is a casting process in which a liquid or semi-solid metal or alloy, or a liquid metal or alloy containing a reinforcement phase, is filled into a cavity of a die casting mold at a relatively high rate under high pressure, and the metal or alloy is solidified under pressure to form a casting.

In high-pressure casting, a conventional slag ladle exhaust structure is used, and for a long cylindrical casting structure, only the gas holding in the range of about 5mm of the area where the slag ladle is positioned can be eliminated, and the whole exhaust of the long cylindrical cavity structure is unsmooth, so that the gas wrapping defect is easily caused.

Disclosure of Invention

In order to solve the problems of difficult air holding and removal and easy air wrapping defect of a long cylinder cavity casting, the utility model provides a high-pressure casting die for a long cylinder cavity structure casting, which adopts the following technical scheme:

the high-pressure casting die for the long barrel cavity structure casting is characterized by comprising an upper die base, a middle die plate and a lower die base which are sequentially arranged from top to bottom, wherein an upper male die is fixedly connected below the upper die base, middle dies and a lower female die are respectively arranged in the middle of the middle die plate and the lower die base, a long barrel cavity with a cylindrical structure is formed between the upper male die and the middle dies and between the upper male die and the lower female die, an air collecting cavity and an exhaust groove are arranged on the upper male die, the air collecting cavity is coaxially arranged at the middle lower part in the upper male die, a plurality of groups of exhaust grooves are arranged, the exhaust grooves are distributed at intervals along the circumferential direction of the long barrel cavity, the heights of the exhaust grooves are distributed along the height direction of the air collecting cavity, and the inner end and the outer end of each exhaust groove are respectively communicated with the air collecting cavity and the long barrel cavity.

Preferably, the plurality of groups of exhaust grooves are uniformly distributed at intervals along the circumferential direction of the long cylinder cavity, and the interval included angle is 10 degrees.

Preferably, the thickness of the exhaust groove gradually increases from the long cylinder cavity to the gas collecting cavity.

The beneficial effects of the utility model are as follows: the gas collection cavity is arranged in the upper male die, a plurality of groups of gas discharge grooves are arranged between the gas collection cavity and the long cylinder cavity, the gas discharge grooves are uniformly distributed at intervals along the circumferential direction of the long cylinder cavity, gas in a severe region of the long cylinder cavity can be effectively guided to the gas collection cavity through the plurality of groups of gas discharge grooves, the plurality of groups of gas discharge grooves can be used for receiving gas in a larger range, the gas content of a casting is better reduced, and therefore the porosity of the casting is reduced; and the exhaust groove adopts the structural design of thick outside, so that the subsequent casting processing is convenient while the exhaust effect is ensured.

Drawings

FIG. 1 is an exploded view of the structure of the present utility model

FIG. 2 is a schematic view of an upper die holder

FIG. 3 is a front view of the structure of the present utility model

FIG. 4 is a top view of the structure of the present utility model

FIGS. 5 and 6 are sectional views A-A

FIGS. 7 and 8 are sectional views of B-B

FIG. 9 is a schematic view of a casting structure

Wherein, 1-upper die holder, 2-middle die plate, 3-lower die holder, 4-upper punch, 5-gas collecting cavity, 6-exhaust groove, 7-middle die, 8-lower die, 9-long cylinder cavity.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

In the description of the utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the view direction or positional relationships, merely to facilitate describing the utility model, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the utility model.

The high-pressure casting die for the long barrel cavity structure castings shown in fig. 1-8 comprises an upper die holder 1, a middle die plate 2 and a lower die holder 3, wherein an upper punch 4 is fixedly connected below the middle part of the upper die holder 1, the upper punch 4 is integrally in a cylindrical structure, an air collecting cavity 5 is coaxially arranged inside the upper punch 4, the air collecting cavity 5 is downwards distributed from the middle upper part of the upper punch 4 until the air collecting cavity penetrates through the lower end of the lower punch 4, the upper punch 4 penetrates through a middle die 7 of the middle die plate 2 from top to bottom and then is connected with a lower die 8 of the lower die holder 3, a long barrel cavity 9 is formed among the upper punch 4, the middle die 7 and the lower die 8, and the air collecting cavity 5 and the long barrel cavity 9 are coaxially distributed.

In addition, the upper punch 4 is further provided with a plurality of groups of exhaust grooves 6, the groups of exhaust grooves 6 are uniformly distributed along the circumferential direction of the upper punch 4 at intervals of 10 degrees, each group of exhaust grooves 6 vertically extends downwards from the upper part of the upper punch 4 and penetrates through the lower end of the upper punch 4 to be distributed, the inner side and the outer side of each exhaust groove 6 are respectively communicated with the air collecting cavity 5 and the long cylinder cavity 9, the thickness of one end, connected with the air collecting cavity 5, of each exhaust groove 6 is 1.5mm, the thickness of one end, connected with the long cylinder cavity 9 is 0.2mm, namely the thickness of each exhaust groove is gradually increased from outside to inside, the contact area between the supporting leg structure formed by the exhaust grooves 6 and the inner wall of the long cylinder cavity structure is small while the exhaust effect is ensured, and subsequent treatment is convenient.

Utilize this application fashioned long tube-shape foundry goods as shown in fig. 9, the casting mould that this application adopted owing to dispose a plurality of exhaust grooves, and the holding down of long tube chamber 8 is inside can guide to gas collection chamber 5, can accept holding down in the more wide range, improves long tube-shape foundry goods exhaust effect, can reduce foundry goods air content better, makes the foundry goods porosity reduce.

The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that modifications may be made without departing from the principles of the utility model, and such modifications are intended to be within the scope of the utility model.

Claims

1. The high-pressure casting die for the long barrel cavity structure casting is characterized by comprising an upper die base, a middle die plate and a lower die base which are sequentially arranged from top to bottom, wherein an upper male die is fixedly connected below the upper die base, middle dies and a lower female die are respectively arranged in the middle of the middle die plate and the lower die base, a long barrel cavity with a cylindrical structure is formed between the upper male die and the middle dies and between the upper male die and the lower female die, an air collecting cavity and an exhaust groove are arranged on the upper male die, the air collecting cavity is coaxially arranged at the middle lower part in the upper male die, a plurality of groups of exhaust grooves are arranged, the exhaust grooves are distributed at intervals along the circumferential direction of the long barrel cavity, the heights of the exhaust grooves are distributed along the height direction of the air collecting cavity, and the inner end and the outer end of each exhaust groove are respectively communicated with the air collecting cavity and the long barrel cavity.

2. The high pressure casting mold for castings according to claim 1, wherein the plurality of sets of the air discharge grooves are uniformly spaced apart in the circumferential direction of the elongated cavity by an included angle of 10 °.

3. The high-pressure casting mold for a casting of a long cylindrical cavity structure according to claim 1, wherein the thickness of the vent groove becomes gradually larger from the long cylindrical cavity to the gas collecting cavity.