CN203778691U - Second parting core box for oil inlet cavity sand core of overflow valve with multi-way valve body - Google Patents

Abstract

The utility model relates to a second parting core box for an oil inlet cavity sand core of an overflow valve with a multi-way valve body. The core box is jointly formed by a left half-slice core box and a right half-slice core box which are subjected to mould opening horizontally; the parting surfaces are in the vertical direction; the left half-slice core box and the right half-slice core box are subjected to mould compounding so as to jointly form a main body cavity of the multi-way valve body; an axial line of a main body flow channel of the main body cavity of the multi-way valve body is in the vertical direction; a group of sand jetting ports communicated with the main body cavity of the multi-way valve body are formed in the core box and are distributed on the parting surfaces at the two sides of the core box; the upper end surfaces of sand jetting holes formed in the sand jetting ports are leveled with the upper end surface of the cavity; the surfaces of the sand jetting ports of the core box are parted in a curved surface mode and the sand jetting ports face to an inlet of the oil inlet cavity. The second parting core box has the advantages that the surfaces of the sand jetting ports of the core box are parted in a curved surface mode, and the upper end surfaces of sand jetting holes formed in the sand jetting ports are leveled with the upper end surface of the cavity, and the sand jetting ports face to the inlet of the oil inlet cavity, so that the compactness of the sand core is guaranteed.

Description

A kind of multichannel valve body overflow valve oil suction chamber core twice parting core box

Technical field

The utility model relates to a kind of core box, particularly a kind of multichannel valve body overflow valve oil suction chamber core twice parting core box.

Background technology

At present, China's casting industry generally adopts core box to manufacture core.Core box refers to the technological equipment of coated sand being made to core, and in the time using core box for forming multiway valve body oil inlet chamber sand cores to manufacture core, the multiple cores of one-shot forming conventionally, to improve coremaking efficiency, save various resources.Its manufacturing process is roughly as follows: the sand material that foundry sand, thermosetting resin and catalyst mix are become is injected into by core shooter in the core box with heater, be heated to 250 to 320 degrees Celsius, make the sand material on core box surface to be heated, binding agent in sand material can harden in a short period of time in polycondensation, and then forms core.In the time of the multiple forming multiway valve body oil inlet chamber sand cores of one-shot forming, due to the semicircle that the lower end Assembly interface of each core is indent, in the time of moulding, must be aided with multiple loose pieces and realize two half point cores.Due to the respectively corresponding moulding loose piece of semi-circular groove installation opening of each core, cause the assembling of produced core semi-circular groove installation opening highly inconsistent, have certain error, cause assembling rear multi-way valve body runner precision low, density is poor, affects casting quality.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of multichannel valve body overflow valve oil suction chamber core twice parting core box that can ensure valve body oil pocket core density.

For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of multichannel valve body overflow valve oil suction chamber core twice parting core box, its innovative point is: described core box is made up of jointly the left and right half sheet core box of horizontal die sinking, die joint is vertical direction, and left core box and right core box common formation multi-way valve body main body die cavity after matched moulds, the main body runner axis of described multi-way valve body main body die cavity is vertical direction;

Described core box is provided with the Sha Kou that penetrates with the conducting of multi-way valve body main body die cavity, and penetrating sand mouth is one group, and is located at the die joint place of core box both sides, described in to penetrate sand-spraying hole upper surface on sand mouth concordant with the upper surface of die cavity;

The sand actinal surface of penetrating of described core box is curved surface somatotype, and faces the porch of oil suction chamber core.

The utility model has the advantage of: the sand actinal surface of penetrating of core box is designed to curved surface somatotype, penetrate sand-spraying hole upper surface on sand mouth concordant with the upper surface of die cavity, penetrate the porch that Sha Kou position faces oil suction chamber core, ensure the density of core, reduced core box high strength, lazy flow precoated sand filling resistance in core box simultaneously.

brief description of the drawings

Fig. 1 is the schematic diagram of multichannel valve body overflow valve oil suction chamber core of the present utility model.

Fig. 2 is the schematic diagram of multichannel valve body overflow valve oil suction chamber core twice parting core box of the present utility model.

Detailed description of the invention

Schematic diagram is as shown in Figure 2 known, and multichannel valve body overflow valve oil suction chamber core twice parting core box of the present utility model is made up of jointly a left side half sheet core box 1 and the right half sheet core box 2 of horizontal die sinking.

Left core box 1 and right core box 2 left and right arrange, and die joint is vertical direction, after left core box 1 and right core box 2 both matched moulds, forms multi-way valve body main body die cavity 4, and the main body runner axis of this multi-way valve body main body die cavity 4 is vertical direction.

Core box be provided with die cavity conducting penetrate sand mouth 3, the described sand mouth 3 of penetrating is one group, be located at the die joint place of core box both sides, the sand mouth 3 of penetrating of core box is designed to curved surface somatotype, penetrate the relative position of sand mouth 3 on core thereby changed, reduced to greatest extent the filling resistance of precoated sand in core box, penetrate sand-spraying hole upper surface on sand mouth 3 concordant with the upper surface of die cavity 4, face the porch of die cavity 4 cores, ensured the density of core.Utilize the made multichannel valve body overflow valve oil suction chamber core of core box of the present utility model as shown in Figure 1.

More than show and described general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (1)

1. a multichannel valve body overflow valve oil suction chamber core twice parting core box, it is characterized in that: described core box is made up of jointly the left and right half sheet core box of horizontal die sinking, die joint is vertical direction, and left core box and right core box common formation multi-way valve body main body die cavity after matched moulds, the main body runner axis of described multi-way valve body main body die cavity is vertical direction;

Described core box is provided with the Sha Kou that penetrates with the conducting of multi-way valve body main body die cavity, and penetrating sand mouth is one group, and is located at the die joint place of core box both sides, described in to penetrate sand-spraying hole upper surface on sand mouth concordant with the upper surface of die cavity;

The sand actinal surface of penetrating of described core box is curved surface somatotype, and faces the porch of oil suction chamber core.