CN104084558A - Gating system of ultra-thin metal shell - Google Patents
Gating system of ultra-thin metal shell Download PDFInfo
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- CN104084558A CN104084558A CN201410354977.3A CN201410354977A CN104084558A CN 104084558 A CN104084558 A CN 104084558A CN 201410354977 A CN201410354977 A CN 201410354977A CN 104084558 A CN104084558 A CN 104084558A
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Abstract
The invention provides a gating system of an ultra-thin metal shell and relates to the technical field of forming of ultra-thin castings. The gating system comprises a straight gating channel, a transverse gating channel, inner gating channels and inner gating openings which are all connected in sequence, wherein the transverse gating channel extends to form the first inner gating channel and the second inner gating channel, the first inner gating opening and the second inner gating opening are formed in a cavity for forming the ultra-thin metal shell, the first inner gating channel is connected to the cavity through the first inner gating opening, the second inner gating channel is connected to the cavity through the second inner gating opening, two flows of molten metal enter the first inner gating channel and the second inner gating channel respectively, the first flow of molten metal sequentially flows through the first inner gating channel, the first inner gating opening and the thin wall area of the cavity, the second flow of molten metal sequentially flows through the second inner gating channel and the second inner gating opening, and the first flow of molten metal and the second flow of molten metal reach the converging area of the cavity at the same time. According to the gating system, the mold-filling capacity and the mold-filling stability of the molten metal can be improved, the defects of cold shut, gas involving, bubbling and the like can be effectively avoided, the yield of the product is improved, and meanwhile, the gating system is reasonable and simple in structure, easy to operate and low in machining cost.
Description
Technical field
The invention relates to the field shaping technique of ultra-thin metal foundry goods, particularly relates to a kind of running gate system of ultra-thin metal housing.
Background technology
For the moulding of common metal thin-wall case, for example thickness is more than 1mm, if the structure of this housing is comparatively simple, the moulding of normal employing Sheet Metal Forming Technology, if the structure of this housing is comparatively complicated, its structure is difficult for adopting Sheet Metal Forming Technology disposal molding or in order to ensure the overall construction intensity of shell, generally all can adopt die cast, die cast with respect to Castingother technique have shaped article size accurately, any surface finish, structural strength and hardness higher, the feature that production efficiency is high is most popular one in casting technique.In prior art, the design of the running gate system of die casting is to be mainly thin-wall case more than 1mm for thickness, but be far smaller than the ultra-thin metal housing of 1mm for thickness, the shell of for example ultrathin connector, because the area of section of the running channel in its running gate system can reduce a lot, the mobile performance of metal bath in running channel is very limited, if the structure scaled down that by existing molding thickness is the running gate system of the above die casting of 1mm can not make metal bath reach high mobility, improve forming ability, can not reach again that to fill type steady, in order, easily make the foundry goods of moulding produce misrun, cold shut, volume gas, cold line, the defects such as pore, thereby have a strong impact on the quality of ultra-thin metal foundry goods, reduce the yields of foundry goods.
Summary of the invention
The object of the invention is to avoid weak point of the prior art and the running gate system that a kind of simple in structure, easy operating, cost are lower, fill the ultra-thin metal housing that type efficiency is high is provided, this running gate system can improve the mold-filling capacity of the ultra-thin housing of forming metal greatly, the stationarity of type is filled in guarantee, avoid the generation of misrun, cold shut, volume gas defect, can improve the yields of ultra-thin metal housing.
The object of the invention is achieved through the following technical solutions:
A kind of running gate system of ultra-thin metal housing is provided, comprise pouring gate structure, ultra-thin metal housing and several overflow bags, pouring gate structure comprises the sprue being connected successively, cross gate, ingate and ingate, described cross gate extends two described ingates, be respectively the first ingate and the second ingate, on the die cavity of the ultra-thin housing of forming metal, be provided with two described ingates, be respectively the first ingate and the second ingate, described the first ingate is connected in die cavity by described the first ingate, described the second ingate is connected in die cavity by described the second ingate, the metal bath of cast is successively through sprue, after cross gate, point two stocks do not enter the first ingate and the second ingate, first strand of metal bath, first ingate of flowing through successively, the first ingate, the tenuity of die cavity and the second money paid for shares belong to melt-flow second ingate of flowing through successively, the second ingate arrives the merge area of the just right die cavity of the second ingate simultaneously, in described merge area, two bursts of metal baths fusions flow to unfilled die cavity jointly.
Wherein, flow through the successively tenuity of the first ingate, the first ingate, die cavity of metal bath arrives flow through successively the second ingate, the second ingate of physical length that described merge area flows through and metal bath and arrives the physical length that described merge area flows through and equate.
Wherein, described the first ingate is linear pattern running channel, the cross section of described the first ingate to be shaped as by circular transition be hollow square or hollow circular.
Wherein, described the first ingate is arranged at an end of die cavity, and described the first ingate is rectangle cast gate.
Wherein, first ingate that is shaped as hollow square or hollow circular of cross section is provided with described overflow bag.
Wherein, described the second ingate arc running channel, the cross section of described the second ingate be shaped as circle or ellipse.
Wherein, the area of the cross section of described the second ingate reduces gradually along the cast flow direction of metal bath.
Wherein, described the second ingate is arranged at the middle part of die cavity, and described the second ingate is yi word pattern cast gate.
Wherein, be provided with described overflow bag with the just right die cavity place of described the second ingate.
Wherein, described sprue is extended with two described cross gates, every described cross gate is extended with two points of cross gates, and described in every, a point cross gate is extended with two described ingates, and described sprue, described cross gate, point cross gate, described ingate all connect successively by arc running channel.
The beneficial effect of the invention:
The running gate system of the ultra-thin metal housing of the invention, comprise the first ingate, the second ingate, the first ingate and the second ingate, the metal bath of cast divides two stocks not enter the first ingate and the second ingate, flow through the successively tenuity of the first ingate, the first ingate, die cavity and second strand of metal bath and second ingate of flowing through, the second ingate of first strand of metal bath arrives the merge area of die cavity simultaneously, and two strands of metal baths merge and jointly flow to unfilled die cavity in merge area.Because the first money paid for shares belongs to the tenuity of melt-flow through die cavity, the thinner wall section of the ultra-thin housing of tenuity forming metal of die cavity, first strand of metal bath front end temperature in the time arriving merge area can decrease, and flow velocity also declines to some extent, be that mold-filling capacity declines, and because two strands of metal baths arrive merge area simultaneously, second strand of metal bath is in time by high temperature, the metal bath of high flow rate supplements to first strand of metal bath, thereby the mobility and the temperature that merge rear metal bath are all improved a lot, ensure different parts stable the fill type of metal bath at die cavity, strengthen overall mold-filling capacity and stability, avoid illiquidity and the too low misrun that causes of solution temperature because of metal bath, cold shut, volume gas, the generation of the defects such as tissue looseness, realize the die cast that thickness is less than the ultra-thin metal housing of 0.15mm, obtain clear-cut, any surface finish, the ultra-thin metal housing that structural strength is high, improving product yield, simultaneously, two strands of metal baths arrive merge area simultaneously, because two strands of metal baths arrive before merge area without any stop, flow velocity equilibrium, can not be involved in gas because velocity jump causes eddy current, and two strands of metal baths are continuous, the arrival merge area of speed equilibrium, greatly reduce the mutual impulsive force of two strands of solution, make two strands of metal baths merge more even, fusion process is balance more, and then ensure follow-up stationarity and order of filling type, promote the yields of ultra-thin foundry goods, in addition, because two strands of metal baths are that type is filled in disposable filling, two strands of metal baths arrive process that merge area flows through without any stop, do not need two strands of metal baths mobile to carry out any control, thereby make the injection system structure of the invention more simple, operate simpler and easy, manufacturing cost is lower, simultaneously metal bath does not stop and disposablely completes filling in running channel, also reduced the duration of pouring, improve production efficiency.
Brief description of the drawings
Utilize accompanying drawing to be described further innovation and creation, but the embodiment in accompanying drawing does not form any restriction to the invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the cross-sectional view at a kind of visual angle of ultra-thin metal housing;
Fig. 2 is the cross-sectional view at the another kind of visual angle of ultra-thin metal housing;
Fig. 3 is the structural representation of the running gate system of a kind of ultra-thin metal housing of the invention;
Fig. 4 is the structural representation under the use state of running gate system of a kind of ultra-thin metal housing of the invention.
In Fig. 1 to Fig. 4, include:
1-sprue;
2-cross gate;
3-divides cross gate;
4-the first ingate, 41-the first ingate;
5-the second ingate, 51-the second ingate;
6-overflow bag;
7-ultra-thin metal housing
8-die cavity, 81-tenuity, 82-merge area.
Detailed description of the invention
With the following Examples the invention is further described.
The running gate system of a kind of ultra-thin metal housing in the present embodiment is as shown in Figure 3 and Figure 4: comprise pouring gate structure, ultra-thin metal housing 7 and several overflow bags 6, pouring gate structure comprises the sprue 1 being connected successively, cross gate 2, ingate and ingate, for enhancing productivity, sprue 1 is extended with two cross gates 2, every cross gate 2 is extended with two points of cross gates 3, every point of cross gate 3 is extended with two ingates, sprue 1, cross gate 2, divide cross gate 3, ingate all connects successively by arc running channel, and sprue 1, cross gate 2, divide cross gate 3, the cross-sectional area of ingate reduces successively gradually, it is steady that guarantee enters metal bath in die cavity 8, in order.
As shown in Figure 3 and Figure 4, divide one end of cross gate 3 to be extended with two ingates, be respectively the first ingate 4 and the second ingate 5, on the die cavity 8 of the ultra-thin housing 7 of forming metal, be provided with two ingates, be respectively the first ingate 41 and the second ingate 51, the first ingate 4 is connected in die cavity 8 by the first ingate 41, the second ingate 5 is connected in die cavity 8 by the second ingate 51, wherein, the structure of ultra-thin metal housing 7 as depicted in figs. 1 and 2, the metal bath of cast is successively through sprue 1, after cross gate 2, be divided into two stocks and do not enter the first ingate 4 and the second ingate 5, first strand of metal bath, first ingate 4 of flowing through successively, the first ingate 41, the tenuity 81 of die cavity 8 and second strand of metal bath second ingate 5 of flowing through successively, the second ingate 51 arrives the merge area 82 in the just right die cavity 8 of the second ingate 51 simultaneously, merge and also jointly flow to unfilled die cavity 8 at the interior two strands of metal baths of described merge area 82, because two strands of metal baths arrive the process of flowing through before merge area 82 without any stop, flow velocity equilibrium, can not cause eddy current and then be involved in gas in merge area 82 because of the sudden change of speed, form volume gas, the defects such as bubble, simultaneously, also reduced the mutual impulsive force of two strands of metal baths in merge area 82, make two bursts of metal bath fusion process steady, in order, ensure stability and the mold-filling capacity of metal bath moulding after merging.
Further, flow through the successively tenuity 81 of the first ingate 4, the first ingate 41, die cavity 8 of first strand of metal bath arrives flow through successively the second ingate 5, the second ingate 51 of physical length that merge area 82 flows through and second strand of metal bath and arrives the physical length that merge area 82 flows through and equate, ensure that two strands of solution can arrive merge area 82 simultaneously, make to fill type steady, avoid because large impulsive force forms whirlpool, and then avoid being involved in gas in metal bath and form bubble.Because two strands of metal baths arrive merge area 82 process of flowing through without any stop, without the flow velocity of two strands of metal baths is carried out to any control, disposable completing filled type, in simplified structure, easy operating, improved and filled type efficiency.As shown in Figure 3 and Figure 4, the tenuity 81 of die cavity 8 can the ultra-thin housing 7 of forming metal thinner wall section, first strand of metal bath all decreases at temperature and the flow velocity of the rear metal bath front end of tenuity 81 of the die cavity 8 of flowing through, mold-filling capacity declines, therefore do not had enough flow velocitys and temperature to carry out the follow-up type that fully fills arriving when merge area 82 first strand of metal bath, now, second strand of metal bath also arrives merge area 82, because second strand of metal bath has higher temperature and flow velocity, thereby second strand of metal bath is blended in first strand of metal bath and can have greatly improved flow velocity and the temperature of former first strand of metal bath front end in time, the mobility and the temperature that merge rear metal bath are all improved a lot, strengthen the mold-filling capacity to follow-up die cavity, and ensure the stable type that fills of the different parts of metal bath in die cavity 8, and then can avoid illiquidity and solution temperature too low the cause misrun follow-up because of metal bath, cold shut, the generation of the defects such as tissue looseness, thereby realize the die cast that thickness is less than the ultra-thin metal housing 7 of 0.15mm, in addition, due to first strand of metal bath and second burst of metal bath arrival merge area 82, and two strands of metal baths arrive front the flowed through process of merge area 82 without any stop, two strands of metal baths all do not produce velocity jump, and then the mutual impulsive force of two strands of metal baths is reduced, make metal bath be difficult for producing whirlpool and be involved in gas, further avoiding rolling up the generation of gas and bubble.
Further, the first ingate 4 is linear pattern running channel, the first ingate 4 and point cross gate 3 are on same straight line, while making metal bath flow to the first ingate 4 from a point cross gate 3, flow direction is constant, can greatly reduce like this loss of energy and heat in metal bath flow process, and shorten running channel length, ensure high type temperature and the mobility of filling, improve mold-filling capacity and fill type efficiency, the phenomenon of avoiding metal bath to produce eddy current and roll up gas because of turning; In addition, the shape of the cross section of the first ingate 4 is hollow square or hollow circular by circular transition, transitions smooth, nothing sudden change, and that the internal face of the first ingate 4 has is smooth, without design features such as dead angles, make metal bath have good mobility and mold-filling capacity, make casting metal melt be difficult for local generation whirlpool and be involved in gas, avoiding rolling up the generation of gas and bubble, ensureing ultra-thin metal housing 7 yields.
Further, the first ingate 41 is arranged at an end of die cavity 8, be the end that the first ingate 41 is arranged at ultra-thin metal housing 7, metal bath flows into an end of die cavity 8 and flows to the other end from the first ingate 41, preferably, the first ingate 41 is rectangle cast gate, and rectangle cast gate is to adapt with the shape of ultra-thin metal housing 7 ends.In the present embodiment, the cross section of the first ingate 4 be shaped as hollow square, hollow square is that rectangle cast gate is corresponding with the first ingate 41, the first ingate 41 is made interior the first ingate 4 shapes and is integrated altogether with the first ingate 4, be conducive to product Integral synchronous and fill type, make metal bath more swimmingly.Fill reposefully in die cavity 8, ensure the abundant filling of ultra-thin metal housing 7 one end.
Further, first ingate 4 that is shaped as hollow square or hollow circular of cross section is provided with overflow bag 6, and overflow bag 6 plays the effect of the first ingate 4 interior gases of discharging, and provides spatial accommodation for the oxide inclusion that produces in cavity filling process etc.
In the present embodiment, the second ingate 5 is set to arc running channel, the cross section of the second ingate 5 be shaped as circle or ellipse, and the area of the cross section of the second ingate 5 reduces gradually along the cast flow direction of metal bath.Reduce energy and thermal loss that metal bath brings due to the turning of runner or the sudden change of cross-sectional area, improve forming ability; In addition, the second ingate 51 is arranged at the middle part of die cavity 8, be the merge area 82 of die cavity 8, that is to say the middle part of ultra-thin metal housing 7, the second ingate 51 is preferably arranged at the relatively thick position of wall thickness of ultra-thin metal housing 7, i.e. merge area 82 is positioned at the relatively thick position of wall thickness of ultra-thin metal housing 7, make respectively the metal bath that comes together in this from the first ingate 4 and the second ingate 5 fully merge, improve mold-filling capacity, reduce metal bath impulsive force, avoid rolling up gas and produce; Simultaneously, the second ingate 51 is arranged at the middle part of die cavity 8, can effectively carry out cooling feeding, improve foundry goods dense structure property, strengthen structural strength, meanwhile, because ultra-thin metal housing 7 presentation qualities have certain requirement, the second ingate 51 is set to the flat cast gate of yi word pattern, thereby the shape of the cross section of the second ingate 5 is also transitioned into yi word pattern gradually from circle or ellipse.
Further, the merge area 82 of die cavity 8 position corresponding with the second ingate 5 is provided with the overflow bag 6 being connected with merge area 82, and this overflow bag 6 plays the gas of merge area 82 and the effect of slag inclusion of discharging.Equally, two money paid for shares flow to unfilled die cavity 8 after belonging to melt fusion, for discharging gas and the slag in it, end at unfilled die cavity 8 is also provided with overflow bag 6, because the ultra-thin metal housing 7 in the present embodiment is hollow housing, in ultra-thin metal housing 7, be equipped with the core of moulding hollow housing, the overflow bag 6 of unfilled die cavity 8 ends is arranged at respectively the both sides of die cavity 8 ends.
Finally should be noted that; above embodiment is only in order to illustrate the technical scheme of the invention; but not restriction to the invention protection domain; although the invention has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical scheme of the invention, and not depart from essence and the scope of the invention technical scheme.
Claims (10)
1. the running gate system of a ultra-thin metal housing, comprise pouring gate structure, ultra-thin metal housing and several overflow bags, pouring gate structure comprises the sprue being connected successively, cross gate, ingate and ingate, it is characterized in that: described cross gate extends two described ingates, be respectively the first ingate and the second ingate, on the die cavity of the ultra-thin housing of forming metal, be provided with two described ingates, be respectively the first ingate and the second ingate, described the first ingate is connected in die cavity by described the first ingate, described the second ingate is connected in die cavity by described the second ingate, the metal bath of cast is successively through sprue, after cross gate, point two stocks do not enter the first ingate and the second ingate, first strand of metal bath, first ingate of flowing through successively, the first ingate, the tenuity of die cavity and the second money paid for shares belong to melt-flow second ingate of flowing through successively, the second ingate arrives the merge area of the just right die cavity of the second ingate simultaneously, in described merge area, two bursts of metal baths fusions flow to unfilled die cavity jointly.
2. the running gate system of a kind of ultra-thin metal housing as claimed in claim 1, is characterized in that: flow through the successively tenuity of the first ingate, the first ingate, die cavity of metal bath arrives flow through successively the second ingate, the second ingate of physical length that described merge area flows through and metal bath and arrives the physical length that described merge area flows through and equate.
3. the running gate system of a kind of ultra-thin metal housing as claimed in claim 1, is characterized in that: described the first ingate is linear pattern running channel, the cross section of described the first ingate to be shaped as by circular transition be hollow square or hollow circular.
4. the running gate system of a kind of ultra-thin metal housing as claimed in claim 1, is characterized in that: described the first ingate is arranged at an end of die cavity, and described the first ingate is rectangle cast gate.
5. the running gate system of a kind of ultra-thin metal housing as claimed in claim 1, is characterized in that: first ingate that is shaped as hollow square or hollow circular of cross section is provided with described overflow bag.
6. the running gate system of a kind of ultra-thin metal housing as claimed in claim 1, is characterized in that: described the second ingate arc running channel, the cross section of described the second ingate be shaped as circle or ellipse.
7. the running gate system of a kind of ultra-thin metal housing as claimed in claim 1, is characterized in that: the area of the cross section of described the second ingate reduces gradually along the cast flow direction of metal bath.
8. the running gate system of a kind of ultra-thin metal housing as claimed in claim 1, is characterized in that: described the second ingate is arranged at the middle part of die cavity, and described the second ingate is yi word pattern cast gate.
9. the running gate system of a kind of ultra-thin metal housing as claimed in claim 1, is characterized in that: the die cavity place just right with described the second ingate is provided with described overflow bag.
10. the running gate system of a kind of ultra-thin metal housing as claimed in claim 1, it is characterized in that: described sprue is extended with two described cross gates, every described cross gate is extended with two points of cross gates, described in every, a point cross gate is extended with two described ingates, and described sprue, described cross gate, described point of cross gate, described ingate all connect successively by arc running channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354977.3A CN104084558B (en) | 2014-07-24 | 2014-07-24 | A kind of running gate system of ultra-thin metal housing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354977.3A CN104084558B (en) | 2014-07-24 | 2014-07-24 | A kind of running gate system of ultra-thin metal housing |
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| CN104084558A true CN104084558A (en) | 2014-10-08 |
| CN104084558B CN104084558B (en) | 2016-05-04 |
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| CN201410354977.3A Expired - Fee Related CN104084558B (en) | 2014-07-24 | 2014-07-24 | A kind of running gate system of ultra-thin metal housing |
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Cited By (6)
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| CN104690232A (en) * | 2015-04-03 | 2015-06-10 | 山东康迈信机械有限公司 | Static pressure line double-brake-drum rotary casting device |
| CN107983932A (en) * | 2017-12-28 | 2018-05-04 | 东莞市长长昶达金属制品有限公司 | Ring-like housing die-casting forming die |
| CN111054898A (en) * | 2019-12-23 | 2020-04-24 | 湛江德利车辆部件有限公司 | Die casting system for die-casting parts |
| CN111360224A (en) * | 2018-10-13 | 2020-07-03 | 北京逸智联科技有限公司 | Mould injection molding method |
| CN114603109A (en) * | 2022-03-16 | 2022-06-10 | 南京工业大学 | Mixed lap joint type ingate system of aluminum alloy die-casting gearbox shell |
| CN116638075A (en) * | 2023-06-05 | 2023-08-25 | 江苏新成标准件有限公司 | Forming device and forming process of special-shaped sealing bolt |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114603109B (en) * | 2022-03-16 | 2023-09-08 | 南京工业大学 | Mixed lap joint type ingate system of aluminum alloy die-casting gearbox shell |
| CN116638075A (en) * | 2023-06-05 | 2023-08-25 | 江苏新成标准件有限公司 | Forming device and forming process of special-shaped sealing bolt |
| CN116638075B (en) * | 2023-06-05 | 2023-10-20 | 江苏新成标准件有限公司 | Forming device and forming process of special-shaped sealing bolt |
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|---|---|
| CN104084558B (en) | 2016-05-04 |
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