CN2860676Y

CN2860676Y - Water channel core of engine cylinder cap

Info

Publication number: CN2860676Y
Application number: CN 200520144152
Authority: CN
Inventors: 刘毅; 陈祖礼; 龙善北; 林振丽
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2005-12-31
Filing date: 2005-12-31
Publication date: 2007-01-24
Anticipated expiration: 2015-12-31

Abstract

The utility model discloses a waterway core for engine cylinder cover, including reality core and core head, which is around lateral side of the said reality core, and connected with the reality core through the sand-outlet part of the reality core. The said core head forms a ring-shape framework structure. The utility model can be applied in the manufacturing process of cylinder head castings molding, and simple-structured, and can rupture during the mould-taking or conveying of the waterway core, in order to increase the rate of finished core and high accuracy of contra positioning group cores.

Description

The engine cylinder cap water channel sand cores

Technical field

The utility model relates to a kind of engine cylinder cap water channel sand cores, especially a kind of automobile-used and marine diesel engine cylinder head water channel sand cores.

Background technology

The water channel sand cores of engine cylinder cap, be a kind of requisite intermediate products in the cylinder cap casting manufacture process, the method that core is shaped, be in core box mould, to fill the diffusing shape core sand mixture for preparing with definite shape, make the shape core sand mixture solidified of loosing by Re Fa or cold process or other physics, chemical method, make it break away from core box afterwards and the core that obtains having definite shape.

The board-like water channel sand cores of long strip type that engine cylinder cap is common, its core print are the simple extension of cylinder head water channel body core clearance hole part.The cylinder head water channel sand cores of this structure, particularly long and thin water channel sand cores, the undercapacity of or core narrow because of the cross section of core is in the knockout course behind its solidified forming, perhaps move very easily fracture in the process of transportation, influence the yield rate of core at it; In addition, the cylinder cap water channel sand cores of this kind structure also exists and be difficult for the problem that the location influences core assembly efficient in the core assembly process.

Summary of the invention

The technical problems to be solved in the utility model is the defective that overcomes prior art, and a kind of breakage problem of water channel sand cores in the demoulding or handling process that solve is provided, and improves the engine cylinder cap water channel sand cores of the yield rate of core.Another purpose of the present utility model provides the high engine cylinder cap water channel sand cores of a kind of core assembly aligning accuracy.

The utility model provides a kind of engine cylinder cap water channel sand cores, comprises body core and core print, and this core print is centered around the outside of described body core, and the clearance hole part by the body core is connected with the body core.

As a kind of improvement of the present utility model, described water channel sand cores comprises upper and lower water channel sand cores, described upper and lower water channel sand cores comprises the body core respectively and is arranged on described body core core print on every side that this core print is connected with the body core by the clearance hole part of body core.Described core print is a ring frame posture structure.

On the core print of described water channel sand cores, be provided with tenon or tenon seat, according to the design needs, tenon can design on the core print of water-supply line core or sewer core, correspondingly, tenon seat contraposition design is on the core print of sewer core or water-supply line core, but described tenon and the contraposition of tenon seat cooperate, to locate upper and lower water channel sand cores.Wherein, preferably adopt 3 pairs of tenons and the contraposition of tenon seat to cooperate.Described tenon and tenon seat adopt any suitable shape, as taper shape, square taper etc.

Owing to adopt above-mentioned technical scheme, the utlity model has following beneficial effect:

1, simple in structure;

2, prevent the fracture of water channel sand cores in the demoulding or handling process, improve the yield rate of core;

3, core assembly aligning accuracy height.

Description of drawings

Fig. 1 is a water-supply line core schematic diagram of the present utility model;

Fig. 2 is the upward view of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 2;

Fig. 4 is that the axle of water-supply line core shown in Figure 1 is surveyed schematic diagram;

Fig. 5 is a sewer core schematic diagram of the present utility model;

Fig. 6 is the upward view of Fig. 5;

Fig. 7 is the B-B cutaway view of Fig. 6;

Fig. 8 is that the axle of sewer core shown in Figure 5 is surveyed schematic diagram;

Fig. 9 is the generalized section at tenon place, upper and lower water channel core assembling back.

Mark the following drawings mark thereon in conjunction with the accompanying drawings:

The 1-core print; The 2-clearance hole; 3-body core; Tenon seat on the core print of 4-water-supply line core; Tenon on the core print of 5-sewer core; 6-water-supply line core, 7-sewer core.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment is illustrated:

Extremely shown in Figure 8 as Fig. 1, upper and lower water channel sand cores 6,7 comprises water channel body core 3 respectively and is arranged on described water channel body core core print 1 on every side, this core print 1 is fixedlyed connected with the clearance hole core 2 on the water channel body core 3, and then is connected to become an organic whole with cylinder head water channel sand cores body 3.

In an embodiment, on the core print of water-supply line core, be provided with tenon seat 4, on the core print of sewer core, be provided with tenon 5, but tenon 5 and tenon seat 4 contrapositions cooperation are located upper and lower water channel sand cores with core assembly.Wherein, preferably adopt 3 pairs of tenons and the contraposition of tenon seat to cooperate.Tenon and tenon seat also adopt any suitable shape, as taper shape, square taper etc.

As shown in Figure 9, on its ring frame posture core print, be provided with tenon 5 and tenon seat 4; During the upper and lower water course assembling,, realize rapid and precise core assembly operation by tenon seat 4 and tenon 5.

It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.

Claims

1, a kind of engine cylinder cap water channel sand cores comprises body core and core print, it is characterized in that: described core print is centered around the outside of described body core, and the clearance hole part by the body core is connected with the body core.

2, engine cylinder cap water channel sand cores according to claim 1, it is characterized in that: described water channel sand cores comprises upper and lower water channel sand cores, described upper and lower water channel sand cores comprises the body core respectively and is arranged on described body core core print on every side that this core print is connected with the body core by the clearance hole part of body core.

3, engine cylinder cap water channel sand cores according to claim 1 and 2 is characterized in that: described core print is a ring frame posture structure.

4, engine cylinder cap water channel sand cores according to claim 2, it is characterized in that: on the core print of described water-supply line core, be provided with tenon seat or tenon, on the core print of described sewer core, be provided with tenon or tenon seat, but described tenon and the contraposition of tenon seat cooperate, to locate upper and lower water channel sand cores.

5, engine cylinder cap water channel sand cores according to claim 4 is characterized in that: described tenon and tenon seat are conical or square taper.

6, according to claim 4 or 5 described engine cylinder cap water channel sand cores, it is characterized in that: on the core print of described upper and lower water channel sand cores, be provided with tenon and tenon seat that 3 pairs of contrapositions cooperate.