CN113680970A - Casting die exempts from to cut casting gate - Google Patents

Abstract

The invention relates to a cutting-free casting gate of a casting die, belonging to the field of casting accessories, wherein a conical bottom drain is arranged on a seat ring, an overflow drain hole is arranged on a bottom plate of the bottom drain, D-shaped bottom drain support lugs are arranged at the symmetrical parts of the two sides of the outer side of the upper opening of the bottom drain, a conical casting gate is arranged on the bottom drain, a filtering hole is arranged on the bottom plate of the casting gate, D-shaped casting gate support lugs are arranged at the symmetrical parts of the two sides of the outer side of the upper opening of the casting gate, the method comprises the steps that a worker places a seat ring, a bottom drain and a pouring gate in the center of the upper surface of a sand box, then molten iron is poured into the pouring gate, the molten iron flows into the sand box through a filtering hole and an overflow hole, after pouring is finished, the worker clamps a bottom drain support lug and a pouring gate support lug through calipers to enable the pouring gate to rotate by 30-45 degrees, the filtering hole and the overflow hole are completely closed to cut off the molten iron in the pouring gate and the sand box, then the bottom drain and the pouring gate are quickly lifted up together, and then the molten iron in the pouring gate is poured out.

Description

Casting die exempts from to cut casting gate

Technical Field

The invention discloses a cutting-free casting opening of a casting mold, belongs to the field of casting accessories, and particularly relates to a cutting-free casting opening after the casting of the mold.

Background

A pouring gate, a kind of funnel used for preventing the casting sand from collapsing and the molten iron from flowing into the interior of the mould. When the existing casting enterprises cast the sandbox, most of the casting enterprises use the funnel-shaped casting gate made of ceramic materials, and after casting, iron piles are left at the position of the casting gate and need to be cut off in addition, which takes labor and time. Therefore, there is a need for a cutting-free sprue that replaces existing sprues.

Disclosure of Invention

The invention relates to a casting mould cutting-free pouring gate, which solves the difficulties by adopting a conical seat ring, wherein a conical bottom drain is arranged on the seat ring, a leakage hole is arranged on a bottom plate of the bottom drain, D-shaped bottom drain support lugs are arranged at symmetrical positions on two sides of the outer side of an upper opening of the bottom drain, a conical pouring gate is arranged on the bottom drain, a filtering hole is arranged on the bottom plate of the pouring gate, and D-shaped pouring gate support lugs are arranged at symmetrical positions on two sides of the outer side of the upper opening of the pouring gate, when in pouring, workers place the seat ring, the bottom drain and the pouring gate at the center of the upper surface of a sand box, then pour molten iron into the pouring gate, the molten iron flows into the sand box through the filtering hole and the leakage hole, after the pouring is finished, the workers use calipers to clamp the bottom drain support lugs and the pouring gate support lugs to enable the pouring gate to rotate by 30-45 degrees, and completely close a gap between the filtering hole and the leakage hole to cut off the molten iron inside the pouring gate and the sand box, Then quickly lifting the bottom drain and the pouring gate together, pouring molten iron in the pouring gate, and leaving no iron pile at the position of the pouring gate after the casting is cooled.

A cutting-free casting gate of a casting die is characterized by comprising a seat ring, a bottom drain support lug, a casting gate support lug, a leakage hole and a filtering hole;

the seat ring is a hollow conical ring made of ceramics, is vertically arranged above the casting sand in the center of the sand box, is provided with a circular opening at the upper part and the lower part, and is connected with a polystyrene mold in the casting sand at the bottom;

the bottom leakage is a hollow conical shape made of ceramics and is arranged in the seat ring, the taper of the outer wall is equal to that of the inner wall of the seat ring, the outer wall is attached to the inner wall of the seat ring, the outer surfaces of the left side and the right side of the upper opening are respectively and horizontally and symmetrically provided with a D-shaped bottom leakage support lug, 4-6 overflow leakage holes with equal diameters are uniformly, symmetrically and vertically arranged on the bottom plate, and the total area of the overflow leakage holes is less than 3/5 of the total area of the part without holes on the bottom plate;

the pouring gate is a hollow conical shape made of ceramics and is arranged in the bottom drain, the taper of the outer wall is equal to that of the inner wall of the bottom drain, the outer wall is attached to the inner wall of the bottom drain, the outer faces of the front side and the rear side of the upper opening are respectively and horizontally symmetrically provided with a rectangular pouring gate support lug, 4-6 filtering holes with the diameter equal to that of the overflow holes are uniformly and vertically arranged on the bottom plate, all the filtering holes are symmetrical and coincident with the overflow holes right below, and the bottom is attached to the upper face of the bottom drain plate.

Has the advantages that: when the existing casting enterprises cast the sandbox, most of the casting enterprises use the funnel-shaped casting gate made of ceramic materials, and after casting, iron piles are left at the position of the casting gate and need to be cut off in addition, which takes labor and time. A cutting-free pouring gate of a casting die is characterized in that during casting, workers place a seat ring, a bottom drain and a pouring gate in the center of the upper surface of a sand box, then pour molten iron into the pouring gate, the molten iron flows into the sand box through a filtering hole and an overflow hole, after the casting is finished, the workers use calipers to clamp a bottom drain support lug and a pouring gate support lug to enable the pouring gate to rotate by 30-45 degrees, the gap between the filtering hole and the overflow hole is completely closed to cut off the molten iron in the pouring gate and the sand box, then the bottom drain and the pouring gate are lifted quickly, then the molten iron in the pouring gate is poured, and iron piles cannot be left at the position of the pouring gate after a casting is cooled.

Drawings

FIG. 1 is a schematic view of a non-cutting casting gate of a casting mold;

FIG. 2 is a schematic view of the construction of the seat ring;

FIG. 3 is a schematic view of the structure of the bottom drain, the bottom drain support lug and the overflow drain hole;

FIG. 4 is a schematic structural diagram of a casting port, a casting port support lug and a filtering hole;

the marks in the above figures are a seat ring 1, a bottom drain 2, a bottom drain support lug 3, a casting opening 4, a casting opening support lug 5, a spillway hole 6 and a filtering hole 7.

Detailed Description

The shape and construction of the present invention will now be described in detail with reference to the accompanying drawings and reference numerals:

a cutting-free casting gate of a casting die is characterized by comprising a seat ring 1, a bottom drain 2, a bottom drain support lug 3, a casting gate 4, a casting gate support lug 5, an overflow drain hole 6 and a filtering hole 7;

the seat ring 1 is a hollow conical ceramic seat ring, is vertically arranged above the casting sand in the center of the sand box, is provided with a circular opening at the upper part and the lower part, and is connected with a polystyrene mold in the casting sand at the bottom;

the bottom leakage 2 is a hollow conical shape made of ceramics and is arranged in the seat ring 1, the taper of the outer wall is equal to that of the inner wall of the seat ring 1, the outer wall is attached to the inner wall of the seat ring 1, the outer faces of the left side and the right side of the upper opening are respectively and horizontally and symmetrically provided with a D-shaped bottom leakage support lug 3, 4-6 overflow leakage holes 6 with equal diameters are uniformly, symmetrically and vertically arranged on the bottom plate, and the total area of the overflow leakage holes 6 is less than 3/5 of the total area of the part without holes on the bottom plate;

the pouring gate 4 is a hollow cone made of ceramics and is arranged in the bottom drain 2, the taper of the outer wall is equal to that of the inner wall of the bottom drain 2, the outer wall is attached to the inner wall of the bottom drain 2, the outer faces of the front side and the rear side of the upper opening are respectively and horizontally symmetrically provided with a rectangular pouring gate support lug 5, 4-6 filtering holes 7 with the diameter equal to that of the overflow drain hole 6 are uniformly and symmetrically and vertically arranged on the bottom plate, all the filtering holes 7 are symmetrical and superposed with the overflow drain hole 6 right below, and the bottom is attached to the upper face of the bottom plate of the bottom drain 2.

When the cutting-free casting opening of the casting mold is used, a worker firstly lays casting sand into a sand box, then puts the casting sand into a polystyrene mold, then fills the casting sand which is 10cm higher than the polystyrene mold into the sand box and tamps the casting sand, the worker uses a special tool to dig out a hole which is equal to the outer diameter of a seat ring of the casting opening in the center of the casting sand, then puts the seat ring into the seat ring to enable the bottom of the seat ring to be combined with the surface of the polystyrene mold, hammers the periphery of the seat ring into shape, then cleans a polystyrene mold surface heat insulation layer exposed at the bottom of the interior of the seat ring by a cutting knife to expose white polystyrene, uses a row brush to uniformly coat talcum powder slurry on the exterior and the interior of the bottom leakage and the upper surface of a bottom plate by the worker, places the bottom leakage into the seat ring, then places the casting opening into the bottom leakage, and carefully inspects whether a filtering hole is coincident with an overflow hole or not, If the filtering hole and the overflow hole are completely overlapped by rotating the pouring gate with deviation, then the molten iron in the pouring pot is accurately poured into the pouring gate, the molten iron flows into the casting sand through the filtering hole and the overflow hole to melt the polystyrene mould to form a casting, after the pouring is finished, a worker uses a special caliper to clamp the bottom drain support lug and the pouring gate support lug to enable the pouring gate to rotate by 30-45 degrees (4 holes are formed on the bottom drain and the pouring gate to rotate the pouring gate by 45 degrees, and if 6 holes are formed, the pouring gate is rotated by 30 degrees), then a pouring gate bottom plate beside the filtering hole is staggered between the filtering hole and the overflow hole to block the overflow hole and cut off the connection between the molten iron in the pouring gate and the molten iron in the overflow hole, then the worker quickly uses a special tool to lift the bottom drain and the pouring gate together and then pour the molten iron in the pouring gate, and at the same time, the molten iron in the seat ring can automatically flow smoothly, after the casting inside the sandbox is cooled, the position of the casting opening is in a flat state, and no iron pile is left.

The above-mentioned non-detailed description is prior art.

The foregoing is merely a general disclosure of the invention and is not intended to limit the invention in any way; those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims.

Claims (1)

1. A cutting-free casting gate of a casting die is characterized by comprising a seat ring, a bottom drain support lug, a casting gate support lug, a leakage hole and a filtering hole;

the seat ring is a hollow conical ring made of ceramics, is vertically arranged above the casting sand in the center of the sand box, is provided with a circular opening at the upper part and the lower part, and is connected with a polystyrene mold in the casting sand at the bottom;

the bottom leakage is a hollow conical shape made of ceramics and is arranged in the seat ring, the taper of the outer wall is equal to that of the inner wall of the seat ring, the outer wall is attached to the inner wall of the seat ring, the outer surfaces of the left side and the right side of the upper opening are respectively and horizontally and symmetrically provided with a D-shaped bottom leakage support lug, 4-6 overflow leakage holes with equal diameters are uniformly, symmetrically and vertically arranged on the bottom plate, and the total area of the overflow leakage holes is less than 3/5 of the total area of the part without holes on the bottom plate;

the pouring gate is a hollow conical shape made of ceramics and is arranged in the bottom drain, the taper of the outer wall is equal to that of the inner wall of the bottom drain, the outer wall is attached to the inner wall of the bottom drain, the outer faces of the front side and the rear side of the upper opening are respectively and horizontally symmetrically provided with a rectangular pouring gate support lug, 4-6 filtering holes with the diameter equal to that of the overflow holes are uniformly and vertically arranged on the bottom plate, all the filtering holes are symmetrical and coincident with the overflow holes right below, and the bottom is attached to the upper face of the bottom drain plate.

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