CN205393455U

CN205393455U - Shaft coupling foundry sand mould

Info

Publication number: CN205393455U
Application number: CN201620182419.8U
Authority: CN
Inventors: 阎涛; 金桂芹; 陈翠凤; 何瑞强; 魏晓光
Original assignee: Huanggang Normal University
Current assignee: Huanggang Normal University
Priority date: 2016-03-10
Filing date: 2016-03-10
Publication date: 2016-07-27
Anticipated expiration: 2026-03-10

Abstract

The utility model discloses a shaft coupling foundry sand mould relates to casting molding technical field. The utility model discloses a cope, bottom boxd, sprue, runner and at least one shaft coupling foundry goods die cavity, sprue and die cavity pass through the cross gate intercommunication, are equipped with two ventholes in that the top of die cavity is vertical, are equipped with a blind riser on the cross gate, water in being equipped with between blind riser and the die cavity. The beneficial effects of the utility model reside in that the feeding is effectual, low in production cost.

Description

Shaft coupling foundry sand moulds

Technical field

This utility model relates to casting and molding technical field, particularly a kind of shaft coupling foundry sand moulds.

Background technology

Shaft coupling belongs to machinery spare part in common use category, being used for connecting two axles (driving shaft and driven shaft) in different institutions so as to jointly rotate the machine components to transmit moment of torsion, be part conventional in mechanical industry, demand is big, blank is made in many employing castings, is then processed.

Wherein, sand casting is the casting method producing foundry goods in sand mold, and steel, ferrum and most of non-ferrous alloy casting all can obtain with sand mould casting method.Modeling Material used by sand casting is cheap and easy to get, and Casting mold manufacturing is easy, the single-piece production of foundry goods, batch production is all adapted to, therefore, is always up the basic technology in Foundry Production.

And in sand casting, resin sand is because of its high intensity, high density and good surface smoothness, the casting dimension accuracy that produced is high, exterior contour is clear, dense structure, foundry goods comprehensive quality advantages of higher, simultaneously resin sand have that intensity after good mobility, easy consolidation, demoulding time scalable, hardening is high, indeformable in carrying behind and mould assembling process, be applied in the Foundry Production of shaft coupling.

At present, shaft coupling casting sand mo(u)ld, adopt top riser to carry out feeding, it is easy to the defect of shrinkage porosite, pore, cinder hole etc occurs, and spray is relatively costly.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of shaft coupling foundry sand moulds, and feeding effect is good, and production cost is low.

For solving above-mentioned technical problem, technical solution adopted in the utility model is: a kind of shaft coupling foundry sand moulds, including cope, drag box, sprue, cast gate and at least one shaft coupling foundry goods die cavity, sprue is connected by cross gate with die cavity, two ventholes vertically it are provided with at the top of die cavity, cross gate is provided with a blind riser, between blind riser and die cavity, is provided with ingate.

Further technical scheme, described venthole is uniformly distributed at the top of die cavity.

Further technical scheme, cross gate is positioned at the separating surface place of cope and drag box, and is positioned on cope.

Further technical scheme, ingate is positioned at the separating surface place of cope and drag box, and is positioned on drag box.

Further technical scheme, is provided with drainage screen between sprue and cross gate.

Adopt produced by technique scheme and have the beneficial effects that: this utility model, relative to prior art, eliminates top riser, adopts venthole aerofluxus, adopts blind riser feeding, during cast, decrease top riser need to iron water amount, feeding effect is good, and production cost is low.

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model embodiment；

Fig. 2 is the top view of drag box in Fig. 1；

In figure: 1, die cavity；2, ingate；3, drag box；4, cast gate；5, sprue；6, cross gate；7, blind riser；8, venthole；9, cope.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.

This utility model is cast into example with HRC280F shaft coupling, describes the technical scheme taked in detail.

Existing HRC280F shaft coupling casting technique is one case two pieces, utilizes two top risers (top riser diameter ∮ 90mm, height 100mm, substance 4.3kg) and a blind riser to carry out feeding (blind riser diameter ∮ 90mm, height 120mm, substance 5.2kg).

This utility model is the improvement to existing casting technique,

Shown in Figure 1, including cope 9, drag box 3, one case two pieces, sprue 5 is connected by cross gate 6 with die cavity 1, vertically it is provided with two ventholes 8 at the top of each die cavity 1, cross gate 6 is provided with a blind riser 7, between blind riser 7 and each die cavity 1, is equipped with ingate 2.

Wherein, removing the top riser adopted in prior art, venthole 8 is uniformly distributed at the top of die cavity 1, carries out utilizing venthole 8 aerofluxus in casting process.

Wherein, cross gate 6 is positioned at the separating surface place of cope 9 and drag box 3, and is positioned on cope 9；Ingate 2 is positioned at the separating surface place of cope 9 and drag box 3, and is positioned on drag box 3.Such process makes molten iron smooth and easy from high to low flowing.

It is provided with drainage screen, it is possible to the bits in elimination molten iron between sprue 5 and cross gate 6.

Wherein, compared with prior art, there is following difference: 1, one case two pieces is constant, the top riser in technique is removed, and the top of each die cavity respectively arranges two ventholes, is exhausted, which reduces the consumption of molten iron in casting process；

2, adopting the diameter strengthening blind riser, diameter is adjusted to ∮ 100 × 130 by original ∮ 90 × 120, individually adopts blind riser that foundry goods is carried out feeding.

3, strict control effect foundry goods chemical composition.

By adjusting process and strict control composition, the shaft coupling foundry goods of production fully achieves technical standard requirement.And decreasing the consumption of molten iron, product yield improves, and piece-production cost reduces, and so for the shaft coupling foundry goods of batch production, integral production cost then can substantially reduce.

Claims

1. a shaft coupling foundry sand moulds, including cope (9), drag box (3), sprue (5), cast gate and at least one shaft coupling foundry goods die cavity (1), sprue (5) is connected by cross gate (6) with die cavity (1), it is characterized in that, two ventholes (8) vertically it are provided with at the top of die cavity (1), cross gate (6) is provided with a blind riser (7), between blind riser (7) and die cavity (1), is provided with ingate (2).

2. a kind of shaft coupling foundry sand moulds according to claim 1, it is characterised in that described venthole (8) is uniformly distributed at the top of die cavity (1).

3. a kind of shaft coupling foundry sand moulds according to claim 1, it is characterised in that cross gate (6) is positioned at cope (9) and the separating surface place of drag box (3), and is positioned on cope (9).

4. a kind of shaft coupling foundry sand moulds according to claim 1, it is characterised in that ingate (2) is positioned at cope (9) and the separating surface place of drag box (3), and is positioned on drag box (3).

5. a kind of shaft coupling foundry sand moulds according to claim 1, it is characterised in that be provided with drainage screen between sprue (5) and cross gate (6).