CN208976780U - Improve the casting mould of Wheel casting quality - Google Patents

Abstract

The utility model discloses the casting moulds for improving Wheel casting quality, the first mold and the second mold including vertical-parting, first mold includes 2 the first casting type chamber, the first running gate system and the first systems of risers being spaced apart, first system of risers includes the level-one riser and second level riser of vertical spacing arrangement, the level-one riser is located at the top of the first casting type chamber highest point and is formed with riser neck in lower end, and the second level riser is located at the interval of 2 the first casting type chambers and connects 2 first point of cast gates；Second mold includes 2 the second casting type chamber, the second running gate system and the second systems of risers being spaced apart, and the second system of risers includes the second riser, and when molding, the second level riser is Chong Die with second riser.The utility model provides a kind of casting mould for improving Wheel casting quality, by the way that reasonable system of risers is arranged, eliminates casting shrinkage cavity and shrinkage defect.

Description

Improve the casting mould of Wheel casting quality

Technical field

The utility model belongs to flywheel casting field, in particular to a kind of casting mould for improving Wheel casting quality.

Background technique

Flywheel (flying wheel) is a kind of disk-shaped part that rotary inertia is very big.For four-stroke engine, Every four piston stroke works done are primary, i.e. only expansion space stroke work done, and be vented, air inlet and compression three strokes will consume Function.Therefore in cyclically-varying, speed of crankshaft is also unstable for the torque that crankshaft externally exports.In order to improve this situation, in song Shaft rear end device flywheel, its effect are to store engine power, overcome the resistance of other component, revolve crankshaft uniformly Turn.

Existing flywheel is made by the way of casting.Casting forming to undergo the liquid contraction of alloy, solidification shrinkage and Liquid contraction three phases.During casting forming, the liquid contraction and solidification shrinkage of alloy can make casting generate shrinkage cavity and Rarefaction defect, often because feeding is bad and lead to shrinkage cavity, loose when casting, causes especially for larger-size flywheel Casting quality is poor.In consideration of it, reasonable feeding system is arranged it is necessary to provide a kind of casting mould for improving Wheel casting quality System eliminates shrinkage cavity and shrinkage defect.

Utility model content

It is reasonable by being arranged the purpose of the utility model is to provide a kind of casting mould for improving Wheel casting quality System of risers, eliminate casting shrinkage cavity and shrinkage defect.

The utility model technical solution used for the above purpose is: improving the casting die of Wheel casting quality Tool, the first mold and the second mold, key including vertical-parting are:

First mold includes 2 the first casting type chamber, the first running gate system and the first feeding systems being spaced apart System, first running gate system include the first cast gate, are connected to the first cross gate of first cast gate bottom, and take respectively 2 first point of cast gates of the first casting type chamber top edge are connected to, first system of risers includes the one of vertical spacing arrangement Grade riser and second level riser, the level-one riser are located at the top of the first casting type chamber highest point and are formed in lower end Riser neck, the second level riser are located at the interval of 2 the first casting type chambers and connect 2 first point of cast gates；

Second mold includes 2 the second casting type chamber, the second running gate system and the second feeding systems being spaced apart System, second running gate system include the second cast gate, are connected to the sprue of second cast gate bottom, and are connected to described The second cross gate and the ingate below the second cross gate of sprue bottom, the second system of risers include the second riser, When molding, the second cross gate connects first cross gate and level-one riser, and the ingate connects the riser neck and institute Second level riser is stated, the second level riser is Chong Die with second riser.

Further, first cast gate and the second cast gate are respectively half funnel-form splitted along middle axial plane.

Further, the second level riser and the second riser are funnel-shaped.

Further, the level-one riser is symmetrical about the midpoint line of 2 the first casting type chambers.

Further, the second level riser is symmetrical about the midpoint line of 2 the first casting type chambers.

Further, described to divide cast gate for sector, and the midpoint line about 2 the first casting type chambers is symmetrical.

Further, first mold and the second mold are formed with the dowel hole of molding, and when molding, the two Dowel hole be overlapped.

The utility model compared with prior art, has the following advantages and beneficial effects:

Casting mould provided by the utility model includes the first mold and the second mold of vertical-parting, in the first mold It is formed with the level-one riser and second level riser of vertical spacing arrangement, is formed with the second level riser consistent the in the second mold Two riser, the level-one riser include riser neck and are located above the casting mold cavity, and the second level riser is formed in the casting Moulding chamber interval is simultaneously connect with cast gate is divided, and the utility model utilizes the level-one riser higher than the casting mold cavity highest point to guarantee The pressure of feeding molten iron expands the volume of feeding molten iron using second level riser and the second riser, can be in the mistake of casting forming Timely feeding is carried out to the liquid contraction of molten iron and solidification shrinkage in journey, prevents the Wheel casting of forming from shrinkage cavity and contracting occur Pine improves the quality of Wheel casting.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of first mold of the utility model；

Fig. 2 is the structural schematic diagram of second mold of the utility model.

Specific embodiment

Detailed description furtherly is made to the utility model in the following with reference to the drawings and specific embodiments, so as to this field skill Art personnel understand.

As shown in Figs. 1-2, the casting mould of the improvement Wheel casting quality of the utility model, first including vertical-parting Mold 1 and the second mold 2, first mold 1 include 2 be spaced apart the first casting type chambers 11, the first running gate system with And first system of risers, first running gate system include the first cast gate 12, are connected to the first of 12 bottom of the first cast gate Cross gate 13, and it is overlapped in 2 first point of cast gates 14 of 11 top edge of the first casting type chamber, first feeding system respectively System includes the level-one riser 15 and second level riser 16 of vertical spacing arrangement, and the level-one riser 15 is located at the first casting type The top of 11 highest point of chamber is simultaneously formed with riser neck in lower end, and the second level riser 16 is located between 2 the first casting type chambers 11 Every place and connect 2 first point of cast gates 14；

Second mold 2 includes 2 the second casting type chamber 21, the second running gate system and the second feeding being spaced apart System, second running gate system include the second cast gate 22, are connected to the sprue 23, Yi Jilian of 22 bottom of the second cast gate It is connected to the second cross gate 24 of 23 bottom of sprue and the ingate 25 positioned at 24 lower section of the second cross gate, the second feeding System includes the second riser 26, and when molding, the second cross gate 24 connects first cross gate 13 and level-one riser 15, it is described in Running channel 25 connects the riser neck and the second level riser 16, and the second level riser 16 is Chong Die with second riser 26.

The utility model utilizes the pressure for guaranteeing feeding molten iron higher than the level-one riser 15 of the casting mold cavity highest point, benefit The volume for expanding feeding molten iron with second level riser 16 and the second riser 26, can be during casting forming to the liquid of molten iron State is shunk and solidification shrinkage carries out timely feeding, prevents the Wheel casting of forming from shrinkage cavity and shrinkage porosite occur, improves Wheel casting Quality.

First cast gate 12 and the second cast gate 22 of the utility model are respectively half funnel-form splitted along middle axial plane.Two Mould assembling carries out pouring in vertically clamped moulds after fanning mold, and the funnelform cast gate of two halves is combined into funnel-form, can lead to the molten metal of casting Stream, rapidly enters it in running gate system.

The level-one riser 15 of the utility model, second level riser 16 and the second riser 26 are funnel-shaped.Level-one riser 15 For guaranteeing the pressure of feeding molten iron, using funnel-form and lower end riser neck, water conservancy diversion can be carried out to the molten iron of casting, make it It rapidly enters in second level riser 16.Second level riser 16 and the second riser 26 it is funnel-shaped and connect divide cast gate, can make full use of Gap between casting mold cavity, promotes the liquid storage volume of riser, when pouring in vertically clamped moulds, allows molten iron first to flow through riser and is re-introduced into type chamber, The feeding effect of riser is improved, feeding is carried out to casting in time, shrinkage cavity and rarefaction defect is eliminated, improves the quality of Wheel casting.

The level-one riser 15 of the utility model is symmetrical about the midpoint line of 2 the first casting type chambers 11.Described two Grade riser 16 is symmetrical about the midpoint line of 2 the first casting type chambers.Described point of cast gate 14 is sector, and casts about 2 first The midpoint line of part type chamber is symmetrical.When the middle position of casting mold cavity forms riser, guarantees to be poured to both sides feeding a casting Uniformity and timeliness.When casting, flow through the molten iron of riser by point pouring the inflow of opening's edge type wall, stamp block and it is steady, and point The position of cast gate is symmetrical about running channel, guarantees the uniformity with row's casting pouring.

First mold 1 and the second mold 2 of the utility model are formed with the dowel hole 17,27 of molding, and close When mould, the dowel hole of the two is overlapped.First mold 1 and the second mold 2 pass through the positioning pin realization also cross dowel hole Molding positioning.

Although above-described embodiment is made that detailed description to the utility model, it is only the utility model a part Embodiment, rather than whole embodiments, people can also obtain other implementations according to the present embodiment under the premise of without creativeness Example, these embodiments belong to scope of protection of the utility model.

Claims (7)

1. improving the casting mould of Wheel casting quality, the first mold and the second mold including vertical-parting, it is characterised in that:

First mold includes 2 the first casting type chamber, the first running gate system and the first systems of risers being spaced apart, institute Stating the first running gate system includes the first cast gate, is connected to the first cross gate of first cast gate bottom, and be overlapped in respectively 2 first point of cast gates of first casting type chamber top edge, first system of risers include that the level-one of vertical spacing arrangement emits Mouth and second level riser, the level-one riser are located at the top of the first casting type chamber highest point and are formed with riser in lower end Neck, the second level riser are located at the interval of 2 the first casting type chambers and connect 2 first point of cast gates；

Second mold includes 2 the second casting type chamber, the second running gate system and the second systems of risers being spaced apart, institute Stating the second running gate system includes the second cast gate, is connected to the sprue of second cast gate bottom, and is connected to and described directly pours The second cross gate and the ingate below the second cross gate of road bottom, the second system of risers include the second riser, molding When, the second cross gate connects first cross gate and level-one riser, and the ingate connects the riser neck and described two Grade riser, the second level riser are Chong Die with second riser.

2. it is according to claim 1 improve Wheel casting quality casting mould, it is characterised in that: first cast gate and Second cast gate is respectively half funnel-form splitted along middle axial plane.

3. the casting mould according to claim 1 for improving Wheel casting quality, it is characterised in that: the level-one riser, Second level riser and the second riser are funnel-shaped.

4. the casting mould according to claim 1 for improving Wheel casting quality, it is characterised in that: the level-one riser closes It is symmetrical in the midpoint line of 2 the first casting type chambers.

5. the casting mould according to claim 1 for improving Wheel casting quality, it is characterised in that: the second level riser closes It is symmetrical in the midpoint line of 2 the first casting type chambers.

6. the casting mould according to claim 1 for improving Wheel casting quality, it is characterised in that: described to divide cast gate for fan Shape, and the midpoint line about 2 the first casting type chambers is symmetrical.

7. it is according to claim 1 improve Wheel casting quality casting mould, it is characterised in that: first mold and Second mold is formed with the dowel hole of molding, and when molding, and the dowel hole of the two is overlapped.