CN218555493U

CN218555493U - Pouring system of crankcase with quick cooling effect

Info

Publication number: CN218555493U
Application number: CN202221616037.3U
Authority: CN
Inventors: 聂越; 刘兴隆
Original assignee: Tonglin Casting Industrial Co ltd
Current assignee: Tonglin Casting Industrial Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2023-03-03
Anticipated expiration: 2032-06-24

Abstract

The utility model belongs to the technical field of sand casting, especially, relate to a gating system of crankcase with quick cooling effect, including the box sand mould, the inside die cavity that is used for pouring the shaping that is provided with of box sand mould has at least one high accuracy cold iron stick to be provided with in the terminal surface psammitolite of all directions of box sand mould, be provided with the sand hole on the terminal surface psammitolite, pre-buried metal sleeve has in the sand hole, hug closely among the metal sleeve and be provided with the cold iron stick, the other end of cold iron stick stretches into in the die cavity. The utility model discloses set up corresponding cooling structure that sets up to the position of difference to realize the even cooling of whole foundry goods, with avoid in the manufacturing process each position cooling rate differ, produce the problem of casting defect, ensure that each relevant size of engine cylinder body meets the requirements.

Description

Pouring system of crankcase with quick cooling effect

Technical Field

The utility model belongs to the technical field of sand casting, especially, relate to a gating system of crankcase with quick cooling effect.

Background

The automobile engine is a heart component of an automobile, is a complex machine consisting of a plurality of mechanisms and systems, and mainly plays a role in converting heat energy into mechanical energy. The cylinder block assembly is a framework of the engine, and is provided with all main parts and accessories of the engine and bears various loads in motion. The crankshaft connecting rod mechanism, the valve actuating mechanism and the systems for oil supply, skidding, cooling and the like of the engine are connected into a whole through the cylinder body, and the processing quality of the cylinder body directly influences the performance of the engine. The structure of the utility model is provided with a left side hanging surface, a right side hanging surface, a front end surface and a rear end surface. The cylinder body assembly of the traditional engine mainly comprises a cylinder body, a cylinder or a cylinder sleeve, a cylinder cover, a cylinder gasket, an oil pan and the like.

The shape of the cylinder body is complex due to the function of the cylinder body, the wall thickness of each position is different and the cylinder body is box-shaped, and the upper part of the cylinder body is provided with a plurality of hole seats which are only machined and used for installing a cylinder sleeve. Therefore, in the casting process, cooling structures are correspondingly arranged at different positions so as to realize uniform cooling of the integral casting. This requires a relatively precise cooling method to be used in the casting of the engine block of the automobile to avoid casting defects due to inconsistent cooling rates at various positions during the manufacturing process, to reduce the machining amount of the machining process, and to ensure that the relevant dimensions of the engine block meet the requirements.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems in the background art, the utility model provides a pouring system of a crankcase with a rapid cooling effect, at least one high-precision cold iron rod is arranged in at least one end face sand core in the end face sand cores in all directions of a box body sand mold, so that the whole casting can be ensured to conduct heat rapidly; the fixed mode of iron bar is provided with the sleeve pipe and buries in husky, then passes the iron bar again, can install after the application, avoids carrying out the application on the iron bar and influences the radiating effect.

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model provides a gating system of crankcase with quick cooling effect, includes the box sand mould, and the box sand mould is inside to be provided with and to be used for pouring fashioned die cavity, in the terminal surface psammitolite of all directions of box sand mould, has at least to be provided with at least one high accuracy chill stick in one terminal surface psammitolite, be provided with the sand hole on the terminal surface psammitolite, pre-buried metal sleeve has in the sand hole, hug closely in the metal sleeve and be provided with the chill stick, the other end of chill stick stretches into in the die cavity.

Optionally, the pouring system of the crankcase with the rapid cooling effect includes a crankcase blank cast in the cavity, and a plurality of iron sheets are arranged on the outer side of the crankcase blank.

Optionally, the iron sheet is arranged on the outer wall of the crankcase blank at a thicker position.

Optionally, the box sand mold comprises an upper end face sand core, 6 cold iron rods are arranged at the bottom end of the upper end face sand core, and the 6 cold iron rods are uniformly distributed on the outer wall of the crankshaft piston cavity.

Optionally, the box sand mold comprises a right end face sand core and a front end face sand core, and 1 cold iron rod is respectively arranged on the right end face sand core and the front end face sand core.

The utility model has the advantages of as follows and beneficial effect:

the utility model discloses in, in the terminal surface psammitolite of each direction of box sand mould, be provided with an at least high accuracy chill bar in having at least one terminal surface psammitolite. Specifically, the end face sand core is provided with a sand hole, a metal sleeve is pre-buried in the sand hole, a cold iron rod is arranged in the metal sleeve in a close fit mode, and the other end of the cold iron rod extends into the cavity. The utility model is provided with a plurality of cold iron bars in the whole crankcase, which can rapidly conduct heat, has large specific heat capacity and fast heat conduction; and the fixed mode of iron bar is that pre-buried the sleeve pipe that is provided with on the psammitolite earlier, then just spray paint, pass the iron bar again at last to can install cold iron bar after the application, avoid carrying on the application on the iron bar and influence the radiating effect. The whole casting solidification cold area trend accords with the design, and the structural defect can be avoided.

Drawings

FIG. 1 is a structural diagram of a sand mold of a box body of a pouring system of a crankcase provided by the utility model;

FIG. 2 is a three-dimensional model structure diagram of the pouring system of the crankcase according to the present invention;

FIG. 3 is a three-dimensional model block diagram of the crankcase gating system of FIG. 2 in another view orientation;

fig. 4 is a front view of a crankcase gating system provided by the present invention; FIG. 4 is an enlarged view c of a portion of FIG. 1;

FIG. 5 isbase:Sub>A cross-sectional view taken along A-A of FIG. 4;

FIG. 6 is a structural diagram of an upper end face sand core of a box sand mold provided by the present invention;

FIG. 7 is an enlarged view of a portion a of FIG. 6;

icon: 1-external mold, 11-upper end face sand core, 111-sand hole, 112-metal sleeve, 12-rear end face sand core, 13-right end face sand core, 14-front end face sand core, 15-left end face sand core, 2-internal mold, 3-cold iron bar, 4-crankcase blank, 41-iron sheet, 42-crankshaft groove, 43-piston cavity, 5-sprue, 51-cross runner and 6-riser.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

Firstly, the engine cylinder sand mold generally comprises an outer mold 1 and an inner mold 2, and after the outer mold 1 and the inner mold 2 are spliced, an inner cavity is a cavity for casting. The outer mold 1 is typically made from a plurality of sand cores.

As shown in fig. 1, the upper end surface of the water jacket structure of the engine cylinder block, which is centered on the engine cylinder block, is called an upper end surface sand core 11 of a cylinder block sand mold, and the sand mold at the upper end surface sand core 11 is provided with a feeding head; the end face, corresponding to the upper end face sand core 11, positioned at the bottom of the cylinder body sand core of the engine cylinder body is called a lower end face sand core, and the inner die 2 is arranged on the lower end face sand mold; the front end face sand core 14, the rear end face sand core 12, the left end face sand core 15 and the right end face sand core 13 are sequentially called in the front direction, the rear direction, the left direction and the right direction. The above-mentioned names of the end faces of the engine block are all common names in the technical field, for example, reference may be made to the naming mode of the engine block in chinese utility model CN201620743471.6, and obviously, these names with directionality are only for convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the drawings of the present invention, a large number of casting system model drawings/blank drawings are applied, because each runner of the casting system is actually only a channel which is distributed in the cylinder sand core, the channels are cast and have the shape of the cavity, and if the channels are directly shown by a structural drawing, the casting system cannot be completely shown, so the casting system is better explained by using the model drawings, obviously, the model drawings are only for the convenience of better explanation, and do not represent the actual structure.

As shown in fig. 1 to 7, a pouring system for a crankcase with a rapid cooling effect comprises a box sand mold, wherein a cavity for pouring is arranged in the box sand mold, and at least one high-precision cold iron rod 3 is arranged in at least one end-face sand core in each direction of the box sand mold.

Specifically, as shown in fig. 7, a sand hole 111 is formed in the end face sand core, a metal sleeve 112 is embedded in the sand hole 111, a cold iron rod 3 is closely attached to the metal sleeve 112, and the other end of the cold iron rod 3 extends into the cavity.

The utility model is provided with a plurality of cold iron rods 3 in the whole crankcase, which can conduct heat rapidly, and has large specific heat capacity and fast heat conduction; and the fixing mode of the cold iron rod 3 is that the metal sleeve 112 is pre-buried on the sand core, then the paint is sprayed, and finally the cold iron rod 3 passes through, so that the cold iron rod 3 can be installed after coating, and the influence of coating on the iron rod on the heat dissipation effect is avoided. The whole casting solidification cold area trend accords with the design, and the defect of structural property can be avoided.

The utility model provides a crankcase gating system, including the box sand mould. The casting structure poured by the box sand mold shown in figure 1 is shown in figures 2 and 3 and is a crankcase body blank piece 4. A riser 6 is arranged at the top end of the crankcase body blank piece 4, a sprue 5 is arranged on one side of the crankcase body blank piece 4, a cross runner 51 is connected to the bottom side of the sprue 5, and the cross runner 51 is located at the bottom end of the crankcase body blank piece 4.

Further, the utility model discloses a crankcase gating system, include and pour fashioned crankcase blank 4 in the die cavity, the outside of crankcase blank 4 is provided with a plurality of iron sheet 41, and iron sheet 41 can solve isolated heat festival (including main oil pipe) loose risk as cooling blade.

Further, the iron piece 41 is provided on the outer wall of the crankcase blank member 4 at a thicker position.

As shown in fig. 4 and 5, the crankcase blank 4 is provided with a crankshaft groove 42 at the bottom and a piston chamber 43 at the top. In the utility model, the box sand mould comprises an upper end face sand core 11, 6 chilling block rods 3 are arranged at the bottom end of the upper end face sand core 11, and the 6 chilling block rods 3 are uniformly distributed on the outer wall of the crankshaft piston cavity 43.

The utility model discloses in, the box sand mould includes right-hand member face psammitolite 13 and preceding terminal surface psammitolite 14, respectively is provided with 1 chill stick 3 on right-hand member face psammitolite 13 and preceding terminal surface psammitolite 14 respectively. Through the structure of crankcase blank 4, optimize the position design of chiller rod 3, as shown in fig. 5, 8 chiller rods 3 set up in crankcase blank 4 with great ease, and whole foundry goods solidifies cold district trend and accords with the design, can avoid structural defect.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pouring system of a crankcase with a rapid cooling effect comprises a box body sand mold, wherein a cavity for pouring molding is arranged in the box body sand mold, and the pouring system is characterized in that at least one high-precision cold iron rod (3) is arranged in at least one end face sand core in each direction of the box body sand mold, a sand hole (111) is formed in the end face sand core, a metal sleeve (112) is pre-buried in the sand hole (111), the cold iron rod (3) is closely arranged in the metal sleeve (112), and the other end of the cold iron rod (3) extends into the cavity.

2. The pouring system for a crankcase with a rapid cooling effect according to claim 1, wherein: the crankcase blank piece (4) is formed in a cavity in a pouring mode, and a plurality of iron sheets (41) are arranged on the outer side of the crankcase blank piece (4).

3. The gating system for a crankcase with a rapid cooling effect as claimed in claim 2, wherein: the iron sheet (41) is arranged on the outer wall of the thick position of the crankcase blank (4).

4. The pouring system for a crankcase with a rapid cooling effect according to claim 1, wherein: the box sand mould comprises an upper end face sand core (11), 6 chilling block rods (3) are arranged at the bottom end of the upper end face sand core (11), and the 6 chilling block rods (3) are uniformly distributed on the outer wall of the crankshaft piston cavity (43).

5. The pouring system for a crankcase with a rapid cooling effect according to claim 4, wherein: the box body sand mold comprises a right end face sand core (13) and a front end face sand core (14), and 1 cold iron rod (3) is respectively arranged on the right end face sand core (13) and the front end face sand core (14).