CN214185143U

CN214185143U - Anti-drilling iron structure of sand casting cylinder cover

Info

Publication number: CN214185143U
Application number: CN202023007846.8U
Authority: CN
Inventors: 王磊
Original assignee: Asimco International Casting Co ltd Shanxi
Current assignee: Asimco International Casting Co ltd Shanxi; Asimco International Casting Shanxi Co Ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-09-14
Anticipated expiration: 2030-12-15

Abstract

The utility model belongs to a sand casting pouring technical field for solving current casting cylinder cap in-process because sand mold cavity and core assembly cooperation harmfully lead to boring indisputable problem, provide a sand casting cylinder cap prevents boring indisputable structure. Go up and establish the sand mold chamber between sand mold and the lower sand mold, establish cylinder cap core assembly in the sand mold chamber, upward establish in the sand mold inner wall and runner, runner and buffering portion are established down to the sand mold lateral wall down, and runner and lower runner pass through buffering portion intercommunication, and runner and cross gate are established at the bottom of lower sand mold, runner and end runner intercommunication, and runner and cross gate intercommunication are established to lower sand mold inner wall and are watered the benefit core, and it is located between runner and cylinder cap core assembly to water the benefit core. In the pouring process, molten iron enters the cylinder cover core assembly from the bottom of the sand mold cavity along the upper pouring gate, the lower pouring gate, the bottom pouring gate and the cross gate, and even if the sand mold cavity and the cylinder cover core assembly are staggered, the phenomenon that the molten iron directly enters the sand mold cavity when the lower pouring gate flows is prevented, and the iron drilling phenomenon is avoided. The complete shape and qualified size of the casting are ensured, the production efficiency is improved, and the production cost is reduced.

Description

Anti-drilling iron structure of sand casting cylinder cover

Technical Field

The utility model relates to a sand casting pouring technical field specifically is an iron structure is prevented boring by sand casting cylinder cap.

Background

As shown in figure 1, the structure of the casting device for producing the engine cylinder cover in the prior art comprises an upper sand mold 1 and a lower sand mold 2, wherein a sand mold cavity is formed between the upper sand mold 1 and the lower sand mold 2, a cylinder cover core group 3 is arranged in the sand mold cavity, an upper pouring gate 4 is arranged in the side wall of the upper sand mold 1, a lower pouring gate 7 is arranged on the inner wall of the lower sand mold 2, a bottom pouring gate 8 is arranged at the bottom of the lower sand mold 2, and the upper pouring gate 4, the lower pouring gate 7 and the bottom pouring gate 8 are communicated. Wherein, the inboard and the sand die cavity of runner 7 link up, after sand die cavity was arranged in to cylinder cap core group 3, theoretically cylinder cap core group 3 should closely laminate with the sand die cavity, and the molten iron gets into from runner 4, and rethread runner 7 and bottom gate way get into cylinder cap core group 3, and the molten iron cooling at last demolishs cylinder cap core group and forms the cylinder cap again. But often the mistake case phenomenon appears occasionally when the core is organized to the cylinder cap core, makes the clearance appear between sand die cavity and the cylinder cap core assembly, especially appears the clearance between runner and cylinder cap core assembly. In the pouring process, molten iron flows along the clearance fit surface between the sand cavity and the cylinder cover core group, the molten iron seeps out of the clearance position to form a large-area iron drilling phenomenon, and after a casting is formed, the plate-shaped iron drilling 6 appears at the clearance position. The production rate of the cylinder cover is low, the production cost is increased, and the production efficiency is reduced.

Disclosure of Invention

The utility model discloses a solve the problem of boring the iron that current casting cylinder cap in-process leads to because sand mold cavity and core assembly cooperation are bad provides a sand casting cylinder cap prevents boring iron structure.

Realize the technical scheme of the utility model, an iron structure is prevented boring by sand casting cylinder cap, including last sand mould, lower sand mould, last sand mould is equipped with sand mold cavity under and between the sand mould, is equipped with cylinder cap core assembly in the sand mold cavity, goes up to be equipped with in the sand mould inner wall and waters, and lower sand mould lateral wall is equipped with down waters and buffering portion, goes up to water and waters down through buffering portion intercommunication, and lower sand mould bottom is equipped with bottom gate and cross gate, waters down and bottom gate intercommunication, and bottom gate and cross gate intercommunication, are equipped with to water under the sand mould inner wall and mend the core, and it is located down to water to mend the core and waters between the cylinder cap core assembly to water the core.

The pouring gate core is L-shaped, the vertical part of the pouring gate core is positioned between the side surfaces of the lower pouring gate and the cylinder cover core assembly, and the horizontal part of the pouring gate core is positioned between the bottom pouring gate and the bottom surface of the cylinder cover core assembly.

Therefore, in the process of pouring molten iron, the molten iron enters the cylinder cover core assembly from the bottom of the sand mold cavity along the upper pouring gate, the lower pouring gate, the bottom pouring gate and the cross pouring gate, and even if the sand mold cavity and the cylinder cover core assembly are staggered as described in the background art, the phenomenon that the molten iron directly enters the sand mold cavity when the lower pouring gate flows is avoided, and the phenomenon of iron drilling is avoided. The complete shape and qualified size of the casting are ensured, the production efficiency is improved, and the production cost is reduced.

Drawings

FIG. 1 is a schematic view of a prior art casting configuration; fig. 2 is a schematic structural diagram of the present invention.

In the figure: 1-feeding a sand mold; 2-laying a sand mold; 3-assembling a cylinder cover core; 4-up pouring channel; 5-a buffer part; 6-plate-shaped drilling iron; 7-lower pouring channel; 8-bottom pouring channel; 9-horizontal pouring channel; 10-pouring channel core supplement.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As illustrated in fig. 2, an iron structure is prevented boring by sand casting cylinder cap, including last sand mould 1, lower sand mould 2, last sand mould 1 is equipped with the sand mold chamber down between the sand mould 2, be equipped with cylinder cap core assembly 3 in the sand mold chamber, upward be equipped with runner 4 in the 1 inner wall of sand mould, 2 lateral walls of lower sand mould are equipped with runner 7 and buffer 5, runner 4 and runner 7 pass through buffer 5 and communicate, lower sand mould 2 bottom is equipped with runner 8 and cross gate 9, runner 7 and runner 8 intercommunication, runner 8 and cross gate 9 intercommunication, be equipped with runner core compensation 10 at 2 inner walls of lower sand mould, runner core compensation 10 is located between runner 7 and cylinder cap core assembly 3.

The pouring gate core supplementing 10 is L-shaped, the vertical part of the pouring gate core supplementing 10 is positioned between the side surfaces of the lower pouring gate 4 and the cylinder cover core assembly 3, and the horizontal part of the pouring gate core supplementing 10 is positioned between the bottom pouring gate 8 and the bottom surface of the cylinder cover core assembly 3.

Before casting begins, a pouring gate core supplementing 10 is placed in a lower sand mold 2, a cylinder cover core assembly 3 is placed, an upper sand mold 1 is placed at last, the whole casting structure is completed, and molten iron is cast at last.

In the molten iron pouring process, molten iron enters the cylinder cover core assembly from the bottom of the sand mold cavity along the upper pouring gate, the lower pouring gate, the bottom pouring gate and the cross pouring gate, and even if the sand mold cavity and the cylinder cover core assembly are staggered as described in the background art, the phenomenon that the molten iron directly enters the sand mold cavity when the lower pouring gate flows is avoided, and the iron drilling phenomenon is avoided. The complete shape and qualified size of the casting are ensured, the production efficiency is improved, and the production cost is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides an iron structure is prevented boring by sand casting cylinder cap, including last sand mould (1), lower sand mould (2), be equipped with sand die cavity between last sand mould (1) and lower sand mould (2), be equipped with cylinder cap core assembly (3) in the sand mould cavity, it is equipped with runner (4) in sand mould (1) inner wall to go up, sand mould (2) lateral wall is equipped with down runner (7) and buffering portion (5) down, it is through buffering portion (5) intercommunication to go up runner (4) and runner (7) down, lower sand mould (2) bottom is equipped with end runner (8) and cross gate (9), runner (7) and end runner (8) intercommunication down, end runner (8) and cross gate (9) intercommunication, its characterized in that: a pouring channel core supplementing (10) is arranged on the inner wall of the lower sand mold (2), and the pouring channel core supplementing (10) is located between the lower pouring channel (7) and the cylinder cover core assembly (3).

2. The sand casting cylinder cap anti-drilling iron structure according to claim 1, characterized in that: the pouring gate core supplementing (10) is L-shaped, the vertical part of the pouring gate core supplementing (10) is positioned between the lower pouring gate (7) and the side face of the cylinder cover core assembly (3), and the horizontal part of the pouring gate core supplementing (10) is positioned between the bottom pouring gate (8) and the bottom face of the cylinder cover core assembly (3).