CN211679947U - A mold pouring system for die-casting auto parts - Google Patents

Abstract

The utility model provides a mold runner system for die-casting auto parts, comprising a runner system and a plurality of molding cavities; the runner system includes a number of main runners, and the output end of the main runner is provided with a number of branch runners , wherein, along the conveying direction of the branch runners, the cross-sectional areas of the branch runners gradually become smaller; a number of ingates are arranged on the parting surface of the molding cavity, and the ingates are connected to the The branch runners are in one-to-one correspondence and communicate with each other; wherein, along the normal direction of the parting surface, the inner gate does not overlap with the side wall of the molding cavity. The utility model can reduce the generation of air holes and shrinkage holes in the casting under the conventional die casting conditions, improve the product quality and reduce the production cost.

Description

A mold pouring system for die-casting auto parts

technical field

The utility model belongs to the technical field of mold pouring and discharging, in particular to a mold pouring and discharging system for die-casting auto parts.

Background technique

High-pressure casting is a process technology that can efficiently manufacture high-quality automotive die-casting parts. The high-pressure casting process is used to manufacture auto parts. The castings have stable dimensions, high precision, good surface smoothness, high production efficiency, and easy automatic production.

There are various small brackets in the car engine, they support various sports function parts. The structure of the small bracket is simple, and the mold is generally in the form of a one-mold multi-cavity split mold without a slider, but the wall thickness of the casting is uneven, and there are deep cavities on the mold, which is easy to generate pores and shrinkage holes in the wall thickness area. Since the bracket needs to bear a certain movement load and vibration in the engine, there is a higher requirement for the internal quality of the bracket.

In the industry, technologies such as vacuum die-casting, local extrusion, and high-pressure spot cooling are also used to deal with the problems of pores and shrinkage holes, but this will lead to a significant increase in the complexity of the mold and the manufacturing cost.

Therefore, how to ensure the casting quality of castings under conventional die casting conditions has become an important research topic in the field.

Utility model content

In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a die casting system for die-casting auto parts, which can reduce the generation of pores and shrinkage holes in the casting under conventional die-casting conditions, and improve product quality. reduce manufacturing cost.

The technical scheme adopted by the utility model to solve its technical problems is:

A mold gating system for die-casting auto parts, comprising:

The runner system includes several main runners, the output end of the main runner is provided with several branch runners, wherein, along the conveying direction of the branch runners, the transverse The cross-sectional area gradually decreases;

A number of molding cavities, and a number of ingates are arranged on the parting surface of the molding cavity, and the ingates and the branch runners are in one-to-one correspondence and communicate with each other; wherein, along the normal direction of the parting surface, The ingate does not overlap the sidewall of the molding cavity.

Preferably, the bends on the main runner and the branch runner are set with smooth transitions.

Preferably, the area of the output port of the branch runner is larger than the area of the inner gate.

Preferably, the parting surface is the top end surface of the molding cavity.

Preferably, an edge structure is provided at the connection between the branch runner and the inner gate.

Preferably, the inner gate is provided on one side of the parting surface, and the other side of the parting surface is provided with several overflow ports;

An overflow system is communicated and arranged at the overflow port.

Preferably, the overflow system includes an exhaust slot, one end of the exhaust slot is communicated with the overflow port, and the other end of the exhaust slot is communicated with the atmosphere.

Preferably, an overflow groove is provided at one end of the exhaust groove that communicates with the overflow port, and the exhaust groove is communicated and provided at the upper end of the overflow groove.

Preferably, there are at least two forming cavities, and they are arranged side by side in a "one" shape;

A plurality of the inner gates are respectively disposed on the same side of the plurality of the molding cavities.

Preferably, the overflow systems are provided corresponding to several of the molding cavities, and the overflow systems corresponding to different molding cavities are independent of each other.

Compared with the prior art, the beneficial effects of the present utility model are:

In this solution, an inner gate is arranged on the parting surface, and the position of the inner gate is cleverly staggered from the side wall of the molding cavity in the infusion direction of the inner gate, so as to prevent the molten metal from directly rushing into the cavity However, splashing with the wall structure results in energy loss of molten metal, which improves the effect of pressure transmission and pressure supply, and reduces the influence of gas on pouring. The cavity parts are filled in sequence, and finally filled to the end face parts, which can facilitate the discharge of gas, reduce the gas involved, and ensure that the molten metal in the forming cavity is poured in place.

At the same time, the cross-sectional area of the branch runner is cleverly set to gradually decrease, so as to realize the regulation of the filling speed and pressure of the molten metal and ensure the molding quality of the casting; The surrounding structure can avoid the collapse of the meat during the later gate removal operation, and reduce the damage rate of the casting; and the gating and discharging system of this scheme has good stability, low production cost, and effectively improves the production efficiency of the casting.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Figure 1 is a schematic structural diagram of the utility model.

FIG. 2 is a schematic structural diagram of the present invention with the molding cavity as the main perspective.

in:

1- runner system, 11- main runner, 12- branch runner;

2-molding cavity, 201-parting surface, 21-inner gate, 22-overflow port, 23-perimeter structure;

3- Overflow system, 31- Exhaust groove, 32- Overflow groove.

Detailed ways

In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features of the embodiments may be combined with each other unless there is conflict. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

Example 1

As shown in FIGS. 1-2 , this embodiment provides a mold sprue system for die-casting auto parts, which mainly includes a runner system 1 , several molding cavities 2 and an overflow system 3 .

The runner system 1 includes several main runners 11 arranged horizontally, one end of the main runner 11 is the input end of the molten metal, and the output end of the main runner 11 is provided with several branch runners 12; Wherein, along the conveying direction of the branch runners 12 , the cross-sectional areas of the branch runners 12 gradually decrease.

As a preferred solution, when the main runner 11 and the branch runner 12 need to be bent and arranged, the bends on the main runner 11 and the branch runner 12 are all set with smooth transitions. Sudden contraction or expansion to avoid pressure loss caused by the collision of molten metal with the sidewall of the pipeline.

A plurality of gates 21 are provided on the parting surface 201 of the molding cavity 2 . In this embodiment, the parting surface 201 is disposed on the top end surface of the molding cavity 2 . The inner gate 21 is disposed on one side of the parting surface 201 , and a plurality of overflow ports 22 are disposed on the other side of the parting surface 201 .

As a preferred solution, the ingate 21 corresponds to the branch runner 12 one-to-one and communicates with each other; and along the normal direction of the parting surface 201 , the ingate 21 and the molding The side walls of the cavity 2 do not overlap to avoid the frontal impact of the molten metal on the mold wall; and the area of the output port of the branch runner 12 is larger than the area of the inner gate 21. By adjusting the size and direction of the cross-sectional area of each runner, Control the flow speed and filling direction of each strand of molten metal to ensure that the molten metal flowing through everywhere has sufficient pressure.

As a preferred solution, the connection between the branch runner 12 and the inner gate 21 and the overflow port 22 are also provided with an edge structure 23, which is conducive to the removal of the gate in the later stage of the casting and prevents the Collapse occurs when the gate is removed, reducing the damage rate of the casting.

The overflow system 3 is communicated and arranged at the overflow port 22. The overflow system 3 includes an exhaust slot 31, one end of the exhaust slot 31 is communicated with the overflow port 22, and the exhaust slot 31 is connected to the overflow port 22. The other end of the air groove 31 communicates with the atmosphere.

Further, an overflow slot 32 is provided at one end of the exhaust slot 31 that communicates with the overflow port 22 , and the exhaust slot 31 is communicated and arranged at the upper end of the overflow slot 32 to stagger the exhaust slot 31 The position of the air port and the position of the overflow port 22 ensure that the functions of exhaust and overflow do not conflict with each other, save the space occupied by the mold, and simplify the structure.

In this embodiment, four of the molding cavities 2 are provided, and they are arranged side by side in a "one" shape in the longitudinal direction of the molding cavity; the inner gates 21 are respectively arranged on the same side of the molding cavity 2, so that The runner system 1 and the overflow system 3 are respectively arranged on both sides of the molding cavity 2 .

As a preferred solution, the overflow systems 3 and the molding cavities 2 are arranged in a one-to-one correspondence, so that the overflow systems 3 corresponding to the molding cavities 2 are independent of each other, so as to avoid The pouring process of the molding cavity 2 is different and affects the operation in the other molding cavity 2 .

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Therefore, without departing from the technical solution content of the present utility model, the above embodiments are made according to the technical essence of the present utility model. Any modification, equivalent change and modification of the present invention still belong to the scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a die casting automobile parts's mould waters row system which characterized in that includes:

the runner system comprises a plurality of main runners, and a plurality of branch runners are arranged at the output end of the main runners, wherein the cross-sectional areas of the branch runners gradually decrease along the conveying direction of the branch runners;

the parting surface of the molding cavity is provided with a plurality of inner gates, and the inner gates and the branch runners are in one-to-one correspondence and are mutually communicated; wherein the ingate does not overlap with the side wall of the molding cavity along the normal direction of the parting surface.

2. The mold gating system of claim 1, wherein the bends of the main gate and the branch gates are smoothly transitioned.

3. The mold gating system of die-cast automobile parts according to claim 1 or 2, wherein the area of the outlet port of the branch gate is larger than the area of the in-gate.

4. The mold gating system of claim 3, wherein the parting plane is a top end surface of the mold cavity.

5. The mold gating system of die-cast automobile parts, according to claim 1 or 4, wherein the junction of the branch runner and the ingate is provided with a surrounding edge structure.

6. The mold gating system of claim 5, wherein the ingate is disposed on one side of the parting plane, and the other side of the parting plane is provided with a plurality of overflow ports;

and the overflow port is communicated with an overflow discharge system.

7. The mold gating system of claim 6, wherein the vent system comprises a vent channel, one end of the vent channel being in communication with the overflow port and the other end of the vent channel being in communication with the atmosphere.

8. The system of claim 7, wherein an overflow groove is disposed at an end of the exhaust groove in communication with the overflow port, and the exhaust groove is in communication with an upper end of the overflow groove.

9. The die-casting mold gating system for die-casting automobile parts according to any one of claims 6 to 8, wherein at least two molding cavities are provided and arranged side by side in a line shape;

the plurality of inner gates are respectively and correspondingly arranged on the same side of the plurality of molding cavities.

10. The mold gating system of claim 9, wherein the overflow systems are disposed corresponding to a plurality of the molding cavities, and the overflow systems disposed corresponding to different molding cavities are independent of each other.

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