CN203495150U - Novel mold for casting piston - Google Patents

Abstract

The utility model relates to a new mold for piston casting, which relates to a mechanical processing device, in particular to a piston casting mold with a combustion chamber. It has an outer mold (1), a core mold (2), a pin mold (3) and a top mold (4). The outer mold is provided with a sprue (6), a casting cavity and a positioning ring (5), and the core mold is installed on the In the matching positioning ring, the pin mold and the top mold are installed in the cavity of the outer mold, and the feature is that the top mold is provided with a boss corresponding to the combustion chamber of the piston; the top mold is provided with an exhaust port (7). The utility model has the positive effects of reducing production cost, improving work efficiency and product quality.

Description

Piston casting new mold

technical field

The utility model relates to a mechanical processing device, in particular to a piston casting mold with a combustion chamber. the

Background technique

Pistons are the key components of engines. With the rapid development of the automobile industry, the demand for pistons is also increasing. At present, mass production of pistons at home and abroad mostly adopts flat-top casting, and the combustion chamber is obtained by removing residual materials through machining. This method not only wastes raw materials, but also requires a long processing time, resulting in high production costs and low work efficiency. the

Contents of the invention

The purpose of the utility model is to provide a new mold for piston casting, so as to reduce production cost and improve work efficiency. the

The new mold for piston casting provided by the utility model has an outer mold, a core mold, a pin mold and a top mold. The outer mold is provided with a sprue, a casting cavity and a positioning ring, and the core mold is installed in the positioning ring matched with it. The mold and the top mold are installed in the cavity of the outer mold, and the feature is that the top mold is provided with a boss corresponding to the combustion chamber of the piston; the top mold is provided with an exhaust port. the

The top mold of the utility model is provided with a boss, which forms a combustion chamber on the piston when casting the piston, which saves materials and reduces the processing procedure; the top mold is provided with an exhaust port with a small top and a large bottom, which can discharge Air in the casting cavity while avoiding the temperature drop too quickly. In summary, the utility model has the positive effects of reducing production costs, improving work efficiency and product quality. the

Description of drawings

Accompanying drawing part discloses specific embodiment of the present utility model, wherein,

Fig. 1 is a schematic diagram of the assembly structure of the utility model;

Fig. 2, the sectional view of top mold of the present utility model;

Fig. 3 is the bottom view of the top mold of the present utility model.

Detailed ways

As shown in Figure 1, the piston casting novel mold provided by the utility model has an outer mold 1, a core mold 2, a pin mold 3 and a top mold 4, and the outer mold is provided with a sprue 6, a casting cavity and a positioning ring 5, The core mold is installed in the positioning ring matched with it, and the pin mold and the top mold are installed in the cavity of the outer mold. the

As shown in Figure 2, the top mold is provided with a boss, and the top mold is provided with an exhaust port 7, and its cross section is conical, that is, the inner diameter of the upper part is smaller than the inner diameter of the lower part. the

The top mold of the utility model is provided with a boss, which forms a combustion chamber on the piston when casting the piston, which saves materials and reduces the processing procedure; the top mold is provided with an exhaust port with a small top and a large bottom, which can discharge Air in the casting cavity while avoiding the temperature drop too quickly. In summary, the utility model has the positive effects of reducing production costs, improving work efficiency and improving product quality. the

Claims (2)

1. a casting for piston novel die, there is external mold (1), core (2), pin mould (3) and backform (4), external mold is provided with sprue gate (6), casting cavity and centring ring (5), core is arranged in the centring ring being mated, pin mould and backform are arranged in the chamber of external mold, it is characterized in that, backform is provided with boss, corresponding with the combustion chamber of piston; In backform, be provided with exhaust outlet (7).

2. casting for piston novel die according to claim 1, is further characterized in that, the exhaust outlet being provided with in described backform (7), and its longitudinal cross-section is tapered.

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