CN202021336U - Sprue bushing for low pressure casting - Google Patents

Sprue bushing for low pressure casting Download PDF

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Publication number
CN202021336U
CN202021336U CN2011200907701U CN201120090770U CN202021336U CN 202021336 U CN202021336 U CN 202021336U CN 2011200907701 U CN2011200907701 U CN 2011200907701U CN 201120090770 U CN201120090770 U CN 201120090770U CN 202021336 U CN202021336 U CN 202021336U
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CN
China
Prior art keywords
low pressure
pressure casting
sprue bush
sprue
die
Prior art date
Application number
CN2011200907701U
Other languages
Chinese (zh)
Inventor
刘宗建
马红堂
Original Assignee
广州驭风铝铸件有限公司
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Publication date
Application filed by 广州驭风铝铸件有限公司 filed Critical 广州驭风铝铸件有限公司
Priority to CN2011200907701U priority Critical patent/CN202021336U/en
Application granted granted Critical
Publication of CN202021336U publication Critical patent/CN202021336U/en

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Abstract

The utility model discloses a sprue bushing for low pressure casting, which comprises an upper sprue bushing and a lower sprue bushing, and is characterized in that: the upper and the lower sprue bushings are integrally formed, a pouring passage which penetrates through the upper and the lower sprue bushings is arranged at the center of the sprue bushing, and is communicated with a liquid guide pipe which is arranged in a low pressure casting liquid guide system, the lower sprue bushing is sleeved in a support structure which is arranged at the periphery of a low pressure casting die, and the upper sprue bushing is installed at the bottom film of the low pressure casting die, and is communicated with the cavity of the low pressure casting die. The upper and the lower sprue bushings of the sprue bushing are integrally formed, the sprue bushing has a simple structure and a reasonable design, the splicing treatment which is carried out between the upper and the lower sprue bushings in the prior art is avoided, low pressure casting slag adhering parts are reduced, and the low pressure casting quality and efficiency are optimized.

Description

A kind of low pressure casting sprue bush
Technical field
The utility model relates to the metal casting technical field, relates in particular to a kind of low pressure casting sprue bush.
Background technology
Low pressure casting is to make liquid metals finish filling die cavity and process of setting under pressure, obtains a kind of casting method of foundry goods.Because used pressure is lower (generally≤150kPa), so be called low pressure casting.Its technical process is: in the holding furnace (or crucible) of sealing, feed dry compressed air, molten metal is under the effect of gas pressure, enter sprue along catheter, enter die cavity reposefully by ingate, and the gas pressure on the liquid level in the maintenance holding furnace, till foundry goods solidifies fully.Remove the gas pressure on the liquid level then, make that not solidified molten metal flows back to holding furnace in catheter and the cast gate, again open form and take out foundry goods.Than the Castingother technology, low pressure casting has its unique advantage: 1) to fill type more steady for liquid metals; 2) casting forming is good, helps forming the foundry goods of clear-cut, any surface finish, and is more favourable for the shaping of large thin wall casting; 3) foundry goods dense structure, mechanical performance height (pressure is shaped down); 4) improved the utilization rate of molten metal, utilization rate generally can reach 90%; 5) working condition is good; Equipment is simple, easily realizes mechanization and automation, also is the outstanding advantage of low pressure casting.
In whole low pressure casting system, catheter and sprue bush are difficult to the degree important influence as the vitals that is connected holding furnace and mold cavity to efficient, quality and the subsequent treatment of whole low pressure casting.For sprue bush, in existing disclosed low pressure casting process, the sprue bush that is provided with in the low pressure casting die comprises sprue bush and submarine gate cover, the two separate machined forms, and independently be installed in the external support structure of low pressure casting die bed die and low pressure casting die the sealing the when gap between last sprue bush and the submarine gate cover seals with realization drain and casting with fire clay respectively.But because it is poor to connect the heat-insulating property in slit, and dross is also caused in slit itself easily; therefore, the sealing off gap place is through regular meeting's accumulated slag, and the accumulated slag at pouring head place not only can influence the internal soundness of foundry goods; and influence the feeding of molten metal by pouring head, cause internal defect in cast.In addition, to separating the last sprue bush cover and the submarine gate condom of moulding, it is installed with splicing and not only has the problem of complex procedures, and also exists Chang Yi to influence the quality and the efficient of whole low pressure casting because of the existence of operation deviation in the process of the two splicing.
This shows, develop a kind of novel low pressure casting sprue bush, overcome the defective of prior art, is the technical problem that those skilled in the art need to be resolved hurrily.
The utility model content
In view of this, technical problem to be solved of the present utility model is to provide a kind of low pressure casting sprue bush, last sprue bush and submarine gate cover are one-body molded in this sprue bush, simple in structure, reasonable in design, avoided in the prior art splicing between last sprue bush and the submarine gate cover being handled, the quality and the efficient of low pressure casting have been optimized in the dross position of having reduced low pressure casting.
The utility model solves the problems of the technologies described above by following technical proposal:
A kind of low pressure casting sprue bush, comprise sprue bush and submarine gate cover, described upward sprue bush and submarine gate cover are one-body molded, this sprue bush center offers runs through the described cast passage of going up sprue bush and submarine gate cover, described cast passage is connected with catheter in the low pressure casting drain system, described submarine gate cover is arranged in the peripheral supporting construction of low pressure casting die, and described upward sprue bush is installed on the counterdie of low pressure casting die, and is connected with the die cavity of low pressure casting die.
As preferred version of the present utility model, the low pressure casting that embodiment of the present utility model provides further comprises the part or all of of following technical characterictic with sprue bush:
Preferably, the outer wall of described sprue bush is provided with the upper bracket step, and this upper bracket step is positioned at the outer peripheral areas of sprue bush.
Correspondingly, described upper bracket step is embedded in the position that the peripheral supporting construction of the bed die of low pressure casting die and low pressure casting die is joined.By the upper bracket step is set, and will be arranged at the position that the peripheral supporting construction of the bed die of low pressure casting die and low pressure casting die is joined, it is good chimeric, fixing that sprue bush of the present utility model and low pressure casting can be realized.
Preferably, the outer wall of described sprue bush is provided with the undersetting step, and this undersetting step is positioned at the outer peripheral areas of submarine gate cover.
Correspondingly, described undersetting step is embedded in the peripheral supporting construction of low pressure casting die.
By upper bracket step and undersetting step are set in sprue bush of the present utility model, and the two is installed on the peripheral supporting construction of the bed die and the low pressure casting die of low pressure casting die respectively, casting red soil with excellent bonds effect is set between sprue bush and the mould, realizes good installation, chimeric.
Preferably, described cast passage comprises the interior protuberance between its both ends open, and protuberance is arranged at the described position that sprue bush and submarine gate cover join of going up in this, and the radius at sprue bush protuberance place in this is less than the radius of sprue bush both ends open.So be provided with, the outlet that last sprue bush links to each other with die cavity is big, and the speed of molten metal in uphill process has obtained slowing down, and makes the flow summation gradually in saturated stable, makes the molten metal smooth transition to mold cavity inside.
Preferably, described sprue bush is formed by ceramic material.Ceramic material has good compressive property, thermal shock resistance and heat-insulating property, and can not corroded and permeate by molten metal when the foundry goods moulding, guarantees that molten metal is not subjected to contaminating impurity, and the pottery table is full smooth, is not prone to dross and other shutoff phenomenons.
Compared with prior art, the technical scheme that the utility model disclosed has following beneficial effect at least:
Low pressure casting sprue bush of the present utility model, the sprue bush and submarine gate cover is one-body molded on it, simple in structure, reasonable in design, avoided in the prior art splicing between last sprue bush and the submarine gate cover being handled, reduce the dross position of low pressure casting, optimized the quality and the efficient of low pressure casting.In addition, by upper bracket step and undersetting step are set in sprue bush of the present utility model, and the two is installed on the peripheral supporting construction of the bed die and the low pressure casting die of low pressure casting die respectively, casting red soil with excellent bonds effect is set between sprue bush and the mould, realizes good installation, chimeric.Moreover by gate channel reasonably is set, the outlet that last sprue bush links to each other with die cavity is bigger, and the speed of molten metal in uphill process has obtained slowing down, and makes the flow summation gradually in saturated stable, makes the molten metal smooth transition to mold cavity inside.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below in conjunction with preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the structural representation of the low pressure casting of the utility model embodiment with sprue bush;
Fig. 2 is the user mode figure of low pressure casting of the present utility model with sprue bush.
The specific embodiment
Describe the utility model in detail below in conjunction with accompanying drawing, it illustrates principle of the present utility model as the part of this specification by embodiment, and other aspects of the present utility model, feature and advantage thereof will become very clear by this detailed description.In the accompanying drawing of institute's reference, same or analogous parts use identical drawing reference numeral to represent among the different figure.
As illustrated in fig. 1 and 2, the low pressure casting that the utility model embodiment one provides sprue bush 10, comprise the sprue bush 11 and submarine gate cover 16, it is 16 one-body molded that the last sprue bush 11 and the submarine gate overlap, sprue bush 10 centers offer the cast passage 13 that runs through sprue bush 11 and submarine gate cover 16, and cast passage 13 is connected with catheter 24 in the low pressure casting drain system 20.During specific implementation, submarine gate cover 16 is arranged in the peripheral supporting construction of low pressure casting die 21, and last sprue bush 11 is installed on the counterdie 23 of low pressure casting die, and is connected with the die cavity 22 of low pressure casting die.
In the utility model embodiment one, the outer wall of sprue bush 10 is provided with upper bracket step 12 and undersetting step 15.Wherein, upper bracket step 12 is positioned at the outer peripheral areas of sprue bush 11, and undersetting step 15 is positioned at the outer peripheral areas of submarine gate cover 16.During concrete the installation, the position that the bed die 23 that upper bracket step 12 is embedded in low pressure casting die and the peripheral supporting construction 21 of low pressure casting die are joined; And undersetting platform 15 rank are embedded in the peripheral supporting construction 21 of low pressure casting die.By upper bracket step 12 and undersetting step 16 are set in the sprue bush 10 of the utility model embodiment, and the two is installed on the peripheral supporting construction of the bed die and the low pressure casting die of low pressure casting die respectively, casting red soil with excellent bonds effect is set between sprue bush and the mould, realizes good installation, chimeric.
In the utility model embodiment one, cast passage 13 comprises the interior protuberance 14 between its both ends open, should be arranged at sprue bush 11 and submarine gate cover 16 positions that join by interior protuberance 14, the radius at sprue bush 11 protuberance 14 places in this is less than the radius of sprue bush 10 both ends opens.So be provided with, the outlet that last sprue bush links to each other with die cavity is big, and the speed of molten metal in uphill process has obtained slowing down, and makes the flow summation gradually in saturated stable, makes the molten metal smooth transition to mold cavity inside.Certainly in other embodiment of the present utility model, under the prerequisite that can solve the utility model technical problem, the shape of cast passage is made corresponding adjustment, also should be considered as the utility model claim scope required for protection.
In addition, in the utility model embodiment one, sprue bush 10 is formed by ceramic material.Ceramic material has good compressive property, thermal shock resistance and heat-insulating property, and can not corroded and permeate by molten metal when the foundry goods moulding, guarantees that molten metal is not subjected to contaminating impurity, and the pottery table is full smooth, is not prone to dross and other shutoff phenomenons.Certainly, in can guaranteeing these practical other embodiment, adopt situation that other materials also can reach above-mentioned technique effect also, also ought be considered as the utility model claim scope required for protection.
Compared with prior art, the technical scheme that the utility model disclosed has following beneficial effect at least:
Low pressure casting sprue bush of the present utility model, the sprue bush and submarine gate cover is one-body molded on it, simple in structure, reasonable in design, avoided in the prior art splicing between last sprue bush and the submarine gate cover being handled, reduce the dross position of low pressure casting, optimized the quality and the efficient of low pressure casting.In addition, by upper bracket step and undersetting step are set in sprue bush of the present utility model, and the two is installed on the peripheral supporting construction of the bed die and the low pressure casting die of low pressure casting die respectively, casting red soil with excellent bonds effect is set between sprue bush and the mould, realizes good installation, chimeric.Moreover by gate channel reasonably is set, the outlet that last sprue bush links to each other with die cavity is bigger, and the speed of molten metal in uphill process has obtained slowing down, and makes the flow summation gradually in saturated stable, makes the molten metal smooth transition to mold cavity inside.
The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.

Claims (7)

1. low pressure casting sprue bush, comprise sprue bush and submarine gate cover, it is characterized in that: described upward sprue bush and submarine gate cover are one-body molded, this sprue bush center offers runs through the described cast passage of going up sprue bush and submarine gate cover, described cast passage is connected with catheter in the low pressure casting drain system, described submarine gate cover is arranged in the peripheral supporting construction of low pressure casting die, described upward sprue bush is installed on the counterdie of low pressure casting die, and is connected with the die cavity of low pressure casting die.
2. low pressure casting sprue bush according to claim 1 is characterized in that: the outer wall of described sprue bush is provided with the upper bracket step, and this upper bracket step is positioned at the outer peripheral areas of sprue bush.
3. low pressure casting sprue bush according to claim 2 is characterized in that: described upper bracket step is embedded in the position that the peripheral supporting construction of the bed die of low pressure casting die and low pressure casting die is joined.
4. low pressure casting sprue bush according to claim 1 and 2 is characterized in that: the outer wall of described sprue bush is provided with the undersetting step, and this undersetting step is positioned at the outer peripheral areas of submarine gate cover.
5. low pressure casting sprue bush according to claim 4 is characterized in that: described undersetting step is embedded in the peripheral supporting construction of low pressure casting die.
6. low pressure casting sprue bush according to claim 1, it is characterized in that: described cast passage comprises the interior protuberance between its both ends open, should in protuberance be arranged at the described position that sprue bush and submarine gate cover join of going up, the radius at sprue bush protuberance place in this is less than the radius of sprue bush both ends open.
7. low pressure casting sprue bush according to claim 1 is characterized in that: described sprue bush is formed by ceramic material.
CN2011200907701U 2011-03-31 2011-03-31 Sprue bushing for low pressure casting CN202021336U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200907701U CN202021336U (en) 2011-03-31 2011-03-31 Sprue bushing for low pressure casting

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Application Number Priority Date Filing Date Title
CN2011200907701U CN202021336U (en) 2011-03-31 2011-03-31 Sprue bushing for low pressure casting

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CN202021336U true CN202021336U (en) 2011-11-02

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102688999A (en) * 2012-06-26 2012-09-26 苏州三基铸造装备股份有限公司 Pouring gate sleeve for extrusion casting mould
CN105478722A (en) * 2016-01-27 2016-04-13 中信戴卡股份有限公司 Improved wheel center casting device and lower mold comprising same
CN105522116A (en) * 2015-12-15 2016-04-27 天津立中车轮有限公司 Composite sprue bush for aluminum alloy wheel die
CN107206480A (en) * 2015-02-19 2017-09-26 日产自动车株式会社 The sprue construction of low-pressure casting apparatus and the low-pressure casting apparatus with the sprue

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102688999A (en) * 2012-06-26 2012-09-26 苏州三基铸造装备股份有限公司 Pouring gate sleeve for extrusion casting mould
CN107206480A (en) * 2015-02-19 2017-09-26 日产自动车株式会社 The sprue construction of low-pressure casting apparatus and the low-pressure casting apparatus with the sprue
CN105522116A (en) * 2015-12-15 2016-04-27 天津立中车轮有限公司 Composite sprue bush for aluminum alloy wheel die
CN105478722A (en) * 2016-01-27 2016-04-13 中信戴卡股份有限公司 Improved wheel center casting device and lower mold comprising same

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111102

Termination date: 20140331