CN220679325U

CN220679325U - Rotary casting component

Info

Publication number: CN220679325U
Application number: CN202322375586.7U
Authority: CN
Inventors: 徐建; 伍世添; 刘后尧; 陈大贤; 杨耿彬; 季晓菊
Original assignee: Guangdong Hongtu Nantong Die Casting Co ltd
Current assignee: Guangdong Hongtu Nantong Die Casting Co ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-03-29
Anticipated expiration: 2033-09-01

Abstract

The utility model discloses a rotary type pouring assembly, which comprises a material cake, wherein the material cake is communicated with a cross runner, the cross runner is communicated with a sprue set, the sprue set comprises a plurality of rotary type sprue, the rotation direction of each sprue is consistent, and each sprue is communicated with an in-gate; the temperature of the aluminum liquid reaches 660 ℃, the aluminum liquid enters the casting feeding assembly from the material cake, then the aluminum liquid enters each rotary sprue through the transverse runner, and enters the barrel casting through the inner gate, the aluminum liquid is filled in the barrel casting in a spiral mode, and gas in the die is extruded. According to the utility model, the internal pouring gate is designed to be at an angle smaller than 90 degrees with the sprue, and then the die cavity is filled in a rotary pouring manner, so that the problem of difficult filling of the cylinder-shaped die-casting can be solved, and the external and internal quality of the cylinder-shaped die-casting can be improved to a great extent.

Description

Rotary casting component

Technical Field

The utility model belongs to the technical field of die casting aluminum alloy machinery, and mainly relates to a rotary casting component.

Background

When a casting system is selected, a die casting generally obtains higher gate speed for reducing pressure loss of a runner, shortens filling time, reduces air mixing into metal liquid, generally designs an inner gate to be perpendicular to a straight runner, as shown in fig. 1, or designs an included angle between the inner gate and the straight runner to be more than 90 degrees, then obtains better internal quality in a straight-line casting mode, and obtains better internal quality at the fastest speed, when the inner gate and the straight runner are more than or equal to 90 degrees, aluminum liquid is in countercurrent at two sides of the edge of the inner gate, and if aluminum alloy liquid is in countercurrent at the inner gate in the aluminum liquid filling process, air holes are formed at the junction of the inner gate on a product.

When the cylinder molding die-casting adopts a common linear casting scheme, gas in a die cavity is discharged to a product exhaust end rapidly, the gas collides with each other in the rapid exhaust process, an ideal exhaust route is separated, the final gas discharge direction is uncontrolled, part of the gas is remained in the die cavity and the product, the product is loose, the internal air holes are out of tolerance, and the internal quality cannot meet the requirements. Based on the conditions that the temperature of the aluminum liquid is 660 ℃, the speed of a punch is 3m/s, the speed of an inner gate is 45m/s, and the casting pressure is 80MPa, particle tracking simulation is carried out, and the phenomenon that gas is impacted at the water tail part of a product and then flows back into the product to form coiled gas is found, so that quality defects such as gas shrinkage holes and the like in the product are extremely easy to form.

Because of product defects there are the following hidden hazards: 1. the product is bad in modeling, and under the condition of acute angles and the like, the safety operation of staff can be influenced. 2. The product is inside to have the shrinkage cavity, can not satisfy the requirement, leads to foundry goods cooling effect to reduce, produces inside leakage even, and the motor can't normally work.

Disclosure of Invention

The utility model aims to solve the problems and provide a rotary casting assembly.

The aim of the utility model is achieved by the following technical scheme:

the utility model provides a subassembly is watered in rotation type, includes the material cake, and the material cake intercommunication has the cross gate, and the cross gate communicates with each other with the sprue group, and the sprue group includes a plurality of rotation type's sprue, and the direction of rotation of every sprue is unanimous, and every sprue communicates the header.

The utility model further improves that: the rotation angle of each sprue is 45-50 degrees.

The utility model further improves that: the included angle between each sprue and the corresponding in-gate is smaller than 90 degrees.

Compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the internal pouring gate is designed to be at an angle smaller than 90 degrees with the sprue, and then the die cavity is filled in a rotary pouring manner, so that the problem of difficult filling of the cylinder-shaped die-casting can be solved, and the external and internal quality of the cylinder-shaped die-casting can be improved to a great extent.

2. When the barrel molding die casting adopts a casting scheme vertical to the end face of the product, the rejection rate of the die casting process is about 40 percent, and when the rotary casting scheme is adopted, the rejection rate of the die casting process is reduced to 5 percent.

Drawings

FIG. 1 is a schematic view of a prior art casting structure;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a state of use of the present utility model;

reference numerals in the drawings: 1-material cake, 2-cross gate, 3-straight gate, 4-in gate and 5-barrel casting.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. Elements and features described in one embodiment of the utility model may be combined with elements and features shown in one or more other embodiments. It should be noted that the illustration and description of components and processes known to those of ordinary skill in the art, which are not relevant to the present utility model, have been omitted for clarity. All other embodiments, which can be made by a person skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to fall within the scope of the utility model.

As shown in fig. 2 and 3, a rotary pouring assembly is arranged at a pouring gate of a die, the rotary pouring assembly comprises a material cake 1, the material cake 1 is communicated with a cross runner 2, the cross runner 2 is communicated with a sprue set, the sprue set comprises a plurality of rotary type sprue 3, the rotation direction of each sprue 3 is consistent, the rotation angle of each sprue is 45-50 degrees, the optimal angle is 49 degrees, and an aluminum alloy liquid is rotationally filled into a product according to the direction of a rotary pouring gate by using a rotary pouring scheme; each sprue 3 is communicated with the corresponding sprue 4, the included angle between each sprue and the corresponding sprue is smaller than 90 degrees, the optimal angle is 80 degrees, gas can be stably extruded out of the die cavity, gas residues in the die cavity are reduced, and gas residues in castings due to gas mutual collision and turbulence are reduced.

The temperature of the aluminum liquid reaches 660 ℃, the aluminum liquid enters the casting assembly from the material cake 1, then the aluminum liquid enters each rotary sprue 3 through the sprue 2, and then enters the barrel casting 5 through the inner gate 4, the aluminum liquid is filled in the barrel casting in a spiral mode, and the gas in the die is extruded. Based on the conditions that the temperature of the aluminum liquid is 660 ℃, the speed of a punch is 3m/s, the speed of an inner gate is 45m/s, and the casting pressure is 80MPa, particle tracking simulation is carried out, the phenomenon that partial gas at the tail part of the product water is stably discharged out of a die cavity according to rotation can be found, and the phenomenon can greatly reduce quality defects such as gas shrinkage holes in the product.

Finally, it should be noted that: although the present utility model and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims. Furthermore, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, means, method and steps described in the specification. Those of ordinary skill in the art will readily appreciate from the disclosure of the present utility model, processes, machines, means, methods, or steps, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present utility model. Accordingly, the appended claims are intended to include within their scope such processes, apparatuses, means, methods, or steps.

Claims

1. A rotary casting assembly, characterized in that: including charge cake (1), charge cake (1) intercommunication has cross gate (2), and cross gate (2) communicate with each other with the sprue group, and the sprue group includes a plurality of rotatory sprue (3), and the direction of rotation of every sprue (3) is unanimous, and every sprue (3) intercommunication header (4).

2. The rotary feed assembly of claim 1, wherein: the rotation angle of each sprue (3) is 45-50 degrees.

3. The rotary feed assembly of claim 1, wherein: the included angle between each sprue (3) and the corresponding in-gate (4) is smaller than 90 degrees.