CN202185557U

CN202185557U - Core box for water channel of diesel engine

Info

Publication number: CN202185557U
Application number: CN2011202325688U
Authority: CN
Inventors: 谢永泽
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2011-06-29
Filing date: 2011-06-29
Publication date: 2012-04-11
Anticipated expiration: 2021-06-29

Abstract

The utility model discloses a core box for the water channel of a diesel engine. The core box comprises an upper core box and a lower core box, wherein a sand injection hole is formed on the upper core box, the cavity body of the lower core box protrudes out of a box dividing surface, and the cavity body of the upper core box is recessed into the box dividing surface according to the corresponding relation with the cavity body of the lower core box. Further, at least one sand injection hole is formed on the upper core box in the position where the thin-walled sand core of the outer wall of an inlet and exhaust port is correspondingly formed. Further, a small injection nozzle is formed on the upper core box and/or the lower core box in a position corresponding to the narrow and small part with a diameter smaller than 6 mm in sand core. The core box for the water channel of the diesel engine can effectively solve the problems of insufficient injection, uncompaction and poor solidification in a made sand core, thereby effectively ensuring the integrity of the sand core and further guaranteeing the performance of the diesel engine.

Description

Diesel engine water channel core box

Technical field

The utility model relates to the core box that a kind of casting sand core is used, particularly a kind of diesel engine water channel core box.

Background technology

Water channel is the most complicated position of structure on the diesel engine, and a lot of irregular curved surfaces and the tiny structure of diameter are arranged.In the process of casting diesel-engine body, need at first produce the core corresponding with the diesel-engine body cavity shape.Core box is exactly the device that is used for making this core specially.Existing diesel engine water channel core box adopts the split-type design that goes up core box and following core box, the bisector plane flush of the branch box face of core box and water channel up and down, and the end face of wherein going up core box also offers several sand-spraying holes, is used for sand is blown into core box.Because the special construction of diesel engine water channel; This existing core box design can not guarantee that all cavitys all are in the effective range scope of penetrating the sand device; The thin-walled core part at entering and exhaust channel position particularly even can not address the above problem well through adding venting plug, is easy to because penetrate sand insufficient and cause the yields of core low; And core penetrate discontented, not consolidation, solidify bad defective, and further influence the performance of diesel engine.

The utility model content

The utility model is in order to overcome above-mentioned defective of the prior art; A kind of diesel engine water channel core box is provided; Can solve effectively the core of making existing penetrate discontented, not consolidation, solidify bad problem, thereby effectively guarantee the integrality of core, and further guarantee the performance of diesel engine.

Particularly, the utility model provides following technical scheme:

A kind of diesel engine water channel core box comprises core box and following core box, wherein goes up and offers sand-spraying hole on the core box, the cavity protrusion branch box face of said core box down, and the cavity of said upward core box according to recessed minute box face of the corresponding relation of following core box cavity.

Further, the said corresponding position that forms the thin-walled core of entering and exhaust channel outer wall of core box of going up is provided with at least one sand-spraying hole.

Further, saidly go up diameter in core box and/or the corresponding core of said core box down and be provided with little nozzle less than the narrow position of 6mm.

Compared with prior art, the utlity model has following beneficial effect:

1, the cavity of core box protrusion divides the box face down, upward actual branch box face has been raised in the design of the recessed minute box face of cavity of core box; Make the die cavity that forms after core box merges up and down press close to penetrate the sand device more; Effectively remedied existing deficiency of penetrating sand equipment range, made all cavitys of core box can both be in the effective range of penetrating sand device range;

2, in the corresponding position that forms the thin-walled core of entering and exhaust channel outer wall of last core box sand-spraying hole is set, makes to exceed the position of penetrating sand equipment range originally and also can be penetrated sand, thus guaranteed the thin-walled core to penetrate sand abundant, make core full solid, solidify good;

3, corresponding to narrow structure division, especially diameter in the water channel position, on core box, set up little nozzle, made these narrow positions also have sand directly to arrive less than 6mm, thus make core full solid, solidify good.

Description of drawings

Fig. 1 is the three-dimensional view of diesel engine water channel core box;

Fig. 2 is the vertical view of following core box among Fig. 1;

Fig. 3 is the stereogram of following core box among Fig. 1;

Fig. 4 is a upward view of going up core box among Fig. 1;

Fig. 5 is a stereogram of going up core box among Fig. 1;

Fig. 6 is the cutaway view of diesel engine water channel core box among Fig. 1;

Fig. 7 is the structure cutaway view of the medium and small nozzle of Fig. 6;

Fig. 8 is the three-dimensional view that utilizes the core that the utility model processes.

In conjunction with the accompanying drawing following Reference numeral of mark above that:

The last core box of 1-, core box under the 2-, the 3-sand-spraying hole, the little nozzle of 4-, the last core box of 11-divides the box face, the last core box cavity of 12-, core box divides the box face under the 21-, core box cavity under the 22-.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of the specific embodiment.

Embodiment one

A kind of diesel engine water channel core box, as shown in Figure 1, comprise core box 1 and following core box 2.Offer a plurality of sand-spraying holes 3 on the end face of last core box 1, be used for penetrating the die cavity of sand equipment in core box and penetrate sand.The structure of following core box 2 is shown in Fig. 2 and 3, and the following core box that has on it with the bisector plane flush of diesel engine water channel divides box face 21 and protrudes the following core box cavity 22 that this time core box divides box face 21.The structure of last core box 1 is shown in Figure 4 and 5, and corresponding to the structure of following core box 2, the cavity 12 recessed core boxes of going up of last core box 1 divide box face 11.

Fig. 6 then is this have last core box 1 of counter structure and the cutaway view that following core box 2 lumps together the diesel engine water channel core box of formation.Because following core box cavity 22 protrudes from down core box and divides box face 21, has raised actual branch box face, makes the die cavity of core box be close to the roof of core box 1 more.Such benefit is to have surpassed the position of penetrating sand device range in the past all to have got into and penetrate within the sand scope; Especially go up the corresponding position that forms the thin-walled core of entering and exhaust channel outer wall of core box; Can offer one or more sand-spraying holes 3 according to the shape of core herein, thereby guarantee that thin-walled core part is also can be full solid, it is good to solidify.Also show the little nozzle 4 at the narrow position that is installed in core box cavity 12 among Fig. 6.Use air-flow that sand is blown into to form core in the die cavity owing to penetrate sand technology, therefore for some narrow position, especially diameters structure place less than 6mm, the moulding of sand is easy to receive the influence of gyration airflow and defective occurs.The little nozzle 4 that use aims at this narrow structural design just can form the more very thin sand air-flow of penetrating, thereby makes sand also can form full solid core at narrow structure place.If the structure of die cavity is too complicated, when especially in core box cavity 22 down, also having above-mentioned narrow structure, can consider that also the corresponding position on core box 2 down adds the little nozzle 4 of suitable quantity.If there is not this narrow structure in the core, then need not to add little nozzle 4.The structure of above-mentioned little nozzle 4 is as shown in Figure 7.

Fig. 8 is a schematic perspective view of using the core that the diesel engine water channel core box in the present embodiment processes.

More than a disclosed specific embodiment that is merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.

Claims

1. diesel engine water channel core box; Comprise core box and following core box, wherein go up and offer sand-spraying hole on the core box, it is characterized in that; The cavity protrusion of said down core box divides the box face, and the said cavity that goes up core box according to recessed minute box face of the corresponding relation of following core box cavity.

2. diesel engine water channel core box according to claim 1 is characterized in that, the said corresponding position that forms the thin-walled core of entering and exhaust channel outer wall of core box of going up is provided with at least one sand-spraying hole.

3. diesel engine water channel core box according to claim 1 and 2 is characterized in that, diameter is provided with little nozzle less than the narrow position of 6mm in said upward core box and/or the corresponding core of said core box down.