CN208976770U

CN208976770U - Prevent the casting mould of casting flaw

Info

Publication number: CN208976770U
Application number: CN201821517723.9U
Authority: CN
Inventors: 李益凤; 唐应彬; 唐微涵; 唐惠琳; 张璐
Original assignee: Chongqing Xin Juxin Machinery Co Ltd
Current assignee: Chongqing Xin Juxin Machinery Co Ltd
Priority date: 2018-09-17
Filing date: 2018-09-17
Publication date: 2019-06-14
Anticipated expiration: 2028-09-17

Abstract

The utility model discloses a kind of casting moulds for preventing casting flaw, the first mold and the second mold including vertical-parting, first mold includes 2 the first casting type chamber, the first running gate system, the first riser and the chills being spaced apart, the riser is located at the top interval of 2 the first casting type chambers and connects 2 points of cast gates, the chill is 2, it is overlapped in the lower edge of the first casting type chamber respectively, and the chill divides cast gate to be distributed about the radial symmetric of the first casting type chamber with described；Second mold includes 2 the second casting type chamber, the second running gate system and the second riser being spaced apart.The utility model provides a kind of casting mould for preventing casting flaw, is used cooperatively using chill and running gate system, riser system, controls the solidification sequence of casting, eliminates the casting flaws such as shrinkage cavity and shrinkage porosite, to obtain qualified casting.

Description

Prevent the casting mould of casting flaw

Technical field

The utility model belongs to flywheel casting field, in particular to a kind of casting mould for preventing casting flaw.

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, it is necessary to provide a kind of casting mould for preventing casting flaw, using chill and running gate system, emit Port system is used cooperatively, and controls the solidification sequence of casting, eliminates the casting flaws such as shrinkage cavity and shrinkage porosite, to obtain qualified casting.

Utility model content

The purpose of the utility model is to provide a kind of casting moulds for preventing casting flaw, are using chill and casting System, runner system are used cooperatively, and control the solidification sequence of casting, eliminate the casting flaws such as shrinkage cavity and shrinkage porosite, to obtain qualification Casting.

The utility model technical solution used for the above purpose is: preventing the casting mould of casting flaw, wraps The first mold and the second mold, key for including vertical-parting are:

First mold includes 2 the first casting type chambers being spaced apart, the first running gate system, the first riser and cold Iron, first running gate system include the first cast gate, are connected to the first cross gate of first cast gate bottom, are located at the first casting The first sprue above part type chamber, and it is overlapped in 2 points of cast gates of the first casting type chamber top edge, the riser respectively Positioned at 2 the first casting type chambers top interval and divide cast gate described in connecting 2, the chill is 2, is overlapped in institute respectively The lower edge of the first casting type chamber is stated, and the chill divides cast gate right about the radial direction of the first casting type chamber with described Claim distribution；

Second mold includes 2 the second casting type chamber, the second running gate system and the second riser being spaced apart, institute Stating the second running gate system includes the second cast gate, is connected to the second sprue of second cast gate bottom, and is connected to described The second cross gate and the ingate below the second cross gate of second sprue bottom, when molding, the connection of the second cross gate First cross gate and the first sprue, the ingate connects first sprue and first riser, described Second riser is Chong Die with first riser.

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

Further, the chill is the sector for being overlapped in the first casting type chamber circumferential edges.

Further, the chill is steel, cast iron or graphite.

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

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

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 is used cooperatively using chill and running gate system, riser system, by that will emit Mouth is set as directly connecting with cast gate is divided, and chill is set to distalmost end of point cast gate on casting mold cavity, strengthens casting Solidification sequence is solidified by distalmost end, and gradually to dividing cast gate to promote, so that the position close to riser is final solidified, it can Abundant feeding is carried out using riser, shrinkage cavity and porosity defect is prevented, improves the qualification rate of 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 for preventing casting flaw of the utility model, the first mold including vertical-parting 1 and second mold 2, first mold includes that 2 the first casting type chambers 11 being spaced apart, the first running gate system, first emit Mouthfuls 12 and chill 13, first running gate system include the first cast gate 141, be connected to the of 141 bottom of the first cast gate One cross gate 142, the first sprue 143 above the first casting type chamber, and be overlapped on the first casting type chamber respectively 2 points of cast gates 144 at portion edge, the riser 12 are located at the top interval of 2 the first casting type chambers and connect described in 2 Divide cast gate 144, the chill 13 is 2, is overlapped in the lower edge of the first casting type chamber 11 respectively, and described cold Iron 13 divides cast gate 144 to be distributed about the radial symmetric of the first casting type chamber 11 with described；

Second mold 2 includes 2 the second casting type chamber 21, the second running gate system and the second riser being spaced apart 22, second running gate system includes the second cast gate 231, is connected to the second sprue 232 of 231 bottom of the second cast gate, And it is connected to the second cross gate 233 of 232 bottom of the second sprue and the ingate positioned at 233 lower section of the second cross gate 234, when molding, the second cross gate 233 connects first cross gate 142 and the first sprue 143, and the ingate 234 connects First sprue 143 and first riser 12 are connect, second riser 22 is Chong Die with first riser 12.

The casting mould of the utility model is used cooperatively using chill 13 and running gate system, riser system, by by first Riser 12 is set as directly connecting with cast gate 144 is divided, and by chill 13 be set to point cast gate 13 the first casting mold cavity 11 most Distally, the solidification sequence for strengthening casting, solidifies by distalmost end, and gradually to dividing cast gate 144 to promote, so that close to riser Position is final solidified, can carry out abundant feeding using riser, prevent the casting flaws such as shrinkage cavity and porosity, improve the qualification of casting Rate.

The described of the utility model divides cast gate 144 for sector, and the midpoint line pair about 2 the first casting type chambers 11 Claim.When casting, flow through the molten iron of the first riser 12 by dividing cast gate 144 to flow into along type wall, stamp block and it is steady, and divide cast gate 144 positional symmetry distribution, guarantees the uniformity with row's casting pouring.

The chill 13 of the utility model is the sector for being overlapped in 11 circumferential edges of the first casting type chamber.Improve contact portion The cooling velocity of position, strengthens the consecutive solidification of casting.

The chill 13 of the utility model is steel, cast iron or graphite.Using the chill material of this field routine, material holds It easily obtains, and low in cost, it is easy to process.

First cast gate 141 and the second cast gate 231 of the utility model are respectively half funnel-form splitted along middle axial plane. Mould assembling carries out pouring in vertically clamped moulds after two fan molds, and the funnelform cast gate of two halves is combined into funnel-form, can carry out to the molten metal of casting Water conservancy diversion rapidly enters it in running gate system.

First riser 12 of the utility model is symmetrical about the midpoint line of 2 the first casting type chambers 11.It is casting The middle position of type chamber forms riser, to the uniformity and timeliness of both sides feeding a casting when guaranteeing to be poured.

First mold 1 and the second mold 2 of the utility model are formed with the dowel hole 15,24 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

1. preventing the casting mould of casting flaw, 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, the first riser and the chills being spaced apart, First running gate system includes the first cast gate, is connected to the first cross gate of first cast gate bottom, is located at the first casting The first sprue above type chamber, and it is overlapped in 2 points of cast gates of the first casting type chamber top edge, the riser position respectively In 2 the first casting type chambers top interval and divide cast gate described in connecting 2, the chill is 2, is overlapped in respectively described The lower edge of first casting type chamber, and the chill and the radial symmetric for dividing cast gate about the first casting type chamber Distribution；

Second mold includes 2 the second casting type chamber, the second running gate system and the second riser being spaced apart, and described Two running gate systems include the second cast gate, are connected to the second sprue of second cast gate bottom, and be connected to described second The second cross gate and the ingate below the second cross gate of sprue bottom, when molding, described in the connection of the second cross gate First cross gate and the first sprue, ingate connection first sprue and first riser, described second Riser is Chong Die with first riser.

2. the casting mould according to claim 1 for preventing casting flaw, it is characterised in that: it is described to divide cast gate for sector, And the midpoint line about 2 the first casting type chambers is symmetrical.

3. the casting mould according to claim 1 for preventing casting flaw, it is characterised in that: the chill is to be overlapped in the The sector of one casting type chamber circumferential edges.

4. the casting mould according to claim 1 for preventing casting flaw, it is characterised in that: the chill is steel, cast iron Or graphite.

5. the casting mould according to claim 1 for preventing casting flaw, it is characterised in that: first cast gate and second Cast gate is respectively half funnel-form splitted along middle axial plane.

6. the casting mould according to claim 1 for preventing casting flaw, it is characterised in that: first riser is about 2 The midpoint line of a first casting type chamber is symmetrical.

7. the casting mould according to claim 1 for preventing casting flaw, 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.