CN203308596U

CN203308596U - Water jacket sand core structure of automobile engine cylinder cover

Info

Publication number: CN203308596U
Application number: CN2013202483905U
Authority: CN
Inventors: 徐辉; 陈文涛; 刘宁; 刘保民; 姜新军; 李娜
Original assignee: Dongfeng Cummins Engine Co Ltd
Current assignee: Dongfeng Cummins Engine Co Ltd
Priority date: 2013-05-09
Filing date: 2013-05-09
Publication date: 2013-11-27
Anticipated expiration: 2023-05-09

Abstract

The utility model provides a water jacket sand core structure of an automobile engine cylinder cover. The water jacket sand core structure comprises a forming side and an air inlet table-board side, the forming side is provided with air valve guide pipe table boards, sand core feet are arranged between each set of air valve guide pipe table boards on the forming side, each sand core foot is in a nipple shape, the section area of the root of each sand core foot is 190 square meters to 220 square meters, and the height of each sand core foot is 50mm to 55mm. The sand core feet are arranged between every set of air valve guide pipe table boards on the forming side, improved pouring piece tracking proves that after improvement of the sand core structure, the reject rate of water jacket hole end cores is greatly lowered.

Description

The sand core of water jacket structure of cylinder cover of automobile engine

Technical field

The utility model relates to the motor car engine product technical field, particularly a kind of sand core of water jacket structure of cylinder cover of automobile engine.

Background technique

Near cylinder cover of automobile engine upper water sleeve 3,4 cylinder upper water sleeve oil nozzles, the disconnected core problem in upper and lower path place (relative cross-section amasss less path) is the bottleneck problem (disconnected core reject rate is more than 80%) that puzzlement casting production capacity promotes.

Summary of the invention

The purpose of this utility model is for the problems referred to above, and the sand core of water jacket structure of a kind of cylinder cover of automobile engine of exploitation solves the disconnected core problem of sand core of water jacket.

The technical solution of the utility model is achieved in that the sand core of water jacket structure of cylinder cover of automobile engine of the present utility model comprises moulding side and air inlet table top side, the valve guide table top is arranged on the moulding side, be furnished with core core pin between every group of valve guide table top of moulding side.

Described core core pin is mamillary, and root section is long-pending is 190mm2～220mm2, and core core pin height is 50mm～55mm.

Advantage of the present utility model: the utility model is furnished with core core pin between every group of valve guide table top of moulding side, follows the tracks of discovery to improving rear pouring piece, and after the sand core structure change, water jacket nose end core reject rate reduces greatly.

The accompanying drawing explanation

Fig. 1 is sand core of water jacket structural representation of the present utility model.

Fig. 2 is the right elevation of Fig. 1.

Fig. 3 is the enlarged view of sand core of water jacket core pin.

Fig. 4 is the generalized section of the utility model structural correspondence cylinder cap.

Embodiment

Below in conjunction with drawings and Examples, further illustrate the utility model.

Fig. 1, Fig. 2 have provided embodiment of the present utility model: the sand core of water jacket structure of cylinder cover of automobile engine of the present utility model comprises moulding side 1 and air inlet table top side 2, valve guide table top 3 is arranged on the moulding side, it is characterized in that: be furnished with core core pin 4 between every group of valve guide table top 3 of moulding side.

Fig. 3 is the enlarged view of sand core of water jacket core pin: described core core pin 4 is mamillary, and root section is long-pending is 190mm2～220mm2, and core core pin 4 is highly 50mm～55mm.

Fig. 4 is the generalized section of the utility model structural correspondence cylinder cap: the 5th, and cylinder cap, 5-4 are core core pin corresponding parts on cylinder cap.

Structure of the present utility model improves sand core strength greatly, has solved the problem of cylinder cap casting process interruption core.

Claims

1. the sand core of water jacket structure of a cylinder cover of automobile engine, comprise moulding side (1) and air inlet table top side (2), valve guide table top (3) is arranged on the moulding side, it is characterized in that: be furnished with core core pin (4) between every group of valve guide table top (3) of moulding side.

2. the sand core of water jacket structure of cylinder cover of automobile engine according to claim 1, it is characterized in that: described core core pin (4) is mamillary, and root section is long-pending is 190mm ²～220mm ², core core pin (4) is highly 50mm～55mm.