CN114603109A - Mixed lap joint type ingate system of aluminum alloy die-casting gearbox shell - Google Patents
Mixed lap joint type ingate system of aluminum alloy die-casting gearbox shell Download PDFInfo
- Publication number
- CN114603109A CN114603109A CN202210256269.0A CN202210256269A CN114603109A CN 114603109 A CN114603109 A CN 114603109A CN 202210256269 A CN202210256269 A CN 202210256269A CN 114603109 A CN114603109 A CN 114603109A
- Authority
- CN
- China
- Prior art keywords
- ingate
- cross
- cavity
- joint
- aluminum alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2272—Sprue channels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model provides a mixed overlap joint formula ingate system of aluminum alloy die-casting transmission casing, characterized by is connected gradually by casing die cavity, ingate, cross gate and sprue four bibliographic categories branch and forms, the ingate outflow end follow shape set up in casing die cavity left side lower part, well lower part and right lower part, molten aluminium warp the ingate outflow end gets into the casing die cavity with different efflux angles, the cross sectional area of cross gate outflow end is greater than the total area in cross section of ingate outflow end is the diminishing trend gradually. The invention can lead the molten aluminum to smoothly pass through the sprue, the cross gate and the ingate in sequence and stably fill the shell cavity after entering the shell cavity, thereby reducing the local resistance coefficient and pressure loss of the molten aluminum in the runner and the shell cavity, greatly slowing down the front impact of the molten aluminum on the inner side of the shell cavity, avoiding the generation of vortex and turbulent flow areas and the generation of defects of air holes, loose structure and the like, and effectively improving the compactness and the yield of shell tissues.
Description
Technical Field
The invention relates to the technical field of aluminum alloy die-casting, in particular to an ingate design technology, and specifically relates to a mixed lap joint type ingate system of an aluminum alloy die-casting gearbox shell.
Background
The gearbox shell is an important part of an automobile transmission system, is generally made of cast iron or aluminum alloy, and is formed by a forming process comprising low-pressure casting, pressure casting and the like. In order to lighten the automobile and meet the requirements of high speed, safety, energy conservation and environmental protection, the material of the gearbox shell replaces an iron casting with aluminum alloy, and the product manufactured by die casting has beautiful appearance, good quality, high dimensional precision and high production efficiency, is generally used in the production of the gearbox shell, but has casting defects such as air holes, loose structure and the like easily in the die casting process.
In the prior art, an ingate system in a die-casting forming process is mainly used for a transmission shell with flat bottom and small wall thickness change and is influenced by the lightweight requirement of automobile parts, the structure of the transmission shell tends to be complicated, the wall thickness change is large, the requirements on quality, dimensional accuracy and air tightness are high, when molten aluminum liquid enters a shell cavity through the traditional ingate system, air entrainment is generated at the joint of the ingate and the shell cavity, the molten aluminum cannot be stably filled after entering the shell cavity, the defects of air holes, loose structure and the like are generated after a product is solidified and formed, and the qualified rate of the product quality is low and the production cost is high.
Aiming at a gearbox shell with a complicated structure, an ingate system needs to be redesigned, so that the mixed lap joint type ingate system of the aluminum alloy die-casting gearbox shell is provided to solve the defects in the prior art.
Disclosure of Invention
The invention discloses a mixed lap joint type ingate system of an aluminum alloy die-casting gearbox shell, aiming at the problem that the traditional ingate system can not meet the requirements of dimensional accuracy and quality of the aluminum alloy gearbox shell. The ingate system can avoid the generation of entrapped gas at the joint of the ingate and the shell cavity of molten aluminum, ensure that the molten aluminum can be stably filled in the shell cavity, avoid the generation of defects of air holes, loose structure and the like after the product is solidified and molded, and improve the product quality qualified rate.
The technical scheme of the invention is as follows: :
the utility model provides a mixed overlap joint formula ingate system of aluminum alloy die-casting transmission housing which characterized in that: the ingate system consists of a shell cavity, an ingate, a cross gate and a sprue; the outflow ends of the ingates are arranged at the left lower part, the middle lower part and the right lower part of the shell cavity in a shape-following manner, and the connecting parts of the ingates and the shell cavity are different in lap joint form; molten aluminum enters the shell cavity through the outflow end of the inner pouring channel at different jet angles; the shell cavity, the inner pouring channel, the cross pouring channel and the straight pouring channel are connected in sequence; the cross section area of the outflow end of the cross runner is larger than the total cross section area of the outflow end of the inner runner, and the cross section area gradually decreases.
Wherein the ingate system comprises: 1 sprue, 1 cross gate, 3 ingates and 1 shell cavity.
The joint of the left ingate and the shell cavity adopts an end face connection form; the connection part of the middle ingate and the shell cavity adopts a side connection mode; and the joint of the right ingate and the shell cavity adopts an end face connection form.
Wherein, the boundary lines of the two sides of the ingate are parallel.
Wherein a height of the outflow end of the intermediate ingate above the inflow end of the intermediate ingate is set in a range of 10 to 25 mm.
The included angle between the direction of injecting molten aluminum into the cavity from the left ingate and the lower wall of the cavity is set to be a jet angle of 30 to 60 degrees; and the included angle between the direction of injecting molten aluminum into the cavity from the right ingate and the lower wall of the cavity is set to be 30 to 60 degrees.
Wherein, the joints of the ingate, the cross gate and the sprue are in fillet transition; the junction fillet radius is in the range of 2 to 10 millimeters.
The cross section area of the outflow end of the cross runner is larger than the total cross section area of the outflow ends of the plurality of inner runners, and the cross section area is uniform and gradually reduced; the ratio of the cross section area of the outflow end of the cross runner to the total cross section area of the outflow ends of the plurality of inner runners is 3-4: 1.
The beneficial effects created by the invention are as follows:
the ingate system provided by the invention can enable molten aluminum to stably pass through the sprue, the cross gate and the ingate in sequence and enter the shell cavity for stable mold filling, thereby reducing the local resistance coefficient and pressure loss of the molten aluminum in the runner and the shell cavity, greatly slowing down the front impact of the molten aluminum on the inner side of the shell cavity, avoiding the generation of vortex and turbulent flow areas and the generation of defects of air holes, loose structure and the like, and effectively improving the compactness and yield of shell tissues.
Drawings
FIG. 1 is a schematic view of the overall structure of the hybrid lap-joint ingate system of the aluminum alloy die-cast transmission case of the present invention.
FIG. 2 is a schematic view, partially in section, of the junction of the left-hand, middle ingate and the housing cavity.
In the figure: 100-straight pouring channel; 200-horizontal pouring channel; 310-left ingate; 320-middle ingate; 330-right ingate; 400-housing cavity.
Detailed Description
The invention is further described with reference to the following figures and examples. It should be noted that in the description of the present invention, the terms of orientation such as up, down, left, right, middle, left-down, middle-down, right-down, etc. are only given based on the relative orientation shown in the drawings, and do not refer to the absolute position of each component of the present invention.
As shown in fig. 1-2.
A mixed overlapping type ingate system of an aluminum alloy die-casting transmission shell is formed by sequentially connecting a shell cavity 400, an ingate 310, an ingate 320, an ingate 330, a cross gate 200 and a sprue 100, as shown in figure 1. In order to make molten aluminum smoothly propel in the ingate system and enhance the mold filling capacity, the connecting parts of the shell cavity 400, the ingate 310, the ingate 320, the ingate 330, the cross gate 200 and the sprue 100 in sequence are in fillet transition, the fillet radius is in the range of 2-10 mm, and preferably, in combination with the size of the runner of the embodiment, when the fillet radius of the connecting parts of the ingate 100 and the cross gate 200 is 10 mm, the connecting parts of the cross gate 200 and the ingate 310, the ingate 320 and the ingate 330 are 5 mm, and the fillet radius of the connecting parts of the ingate 310, the ingate 320 and the ingate 330 and the shell cavity 400 is 2 mm, the local resistance coefficient and the pressure loss of the molten aluminum at the connecting parts of the runner are greatly reduced, the impact of the molten aluminum on the connecting parts of the molten aluminum runner is relieved, and the vortex and the turbulent flow zone at the connecting parts of the runner is avoided.
In order to further ensure the mold filling capability and mold filling stability of molten aluminum in the runner, the cross-sectional area of the outflow end of the cross gate 200 is larger than the total cross-sectional area of the outflow ends of the ingates 310, 320 and 330, and is in a uniform and gradually reduced trend, preferably, in combination with the size of the runner of the present embodiment, the ratio of the total cross-sectional area of the outflow end of the cross gate 200 to the total cross-sectional area of the outflow ends of the ingates 310, 320 and 330 is 3.5: 1, thereby effectively avoiding the kinetic energy and pressure loss of the molten aluminum due to unreasonable and abrupt change of the cross-sectional area of the runner, ensuring the mold filling capability of the molten aluminum, facilitating the control and guarantee of the uniform and gradually reduced trend of the cross-sectional areas of the outflow ends of the cross gate 200 to the ingates 310, 320 and 330, the boundary lines on the two sides of the ingates 310, 320 and 330 are parallel, and easily controlling the thickness of the ingates to equivalently control the ingates 310, 320, 330, The cross-sectional areas of the ingate 320 and the ingate 330 are large and small.
In this embodiment, the outflow ends of the ingate 310, the ingate 320 and the ingate 330 are respectively arranged at the left lower part, the middle lower part and the right lower part of the housing cavity 400 in a shape like the shape, i.e. the ingate 310, the ingate 320 and the ingate 330 are respectively communicated with different positions of the housing cavity 400 and are influenced by the lightweight requirement of automobile parts, the structure of the transmission housing tends to be complicated, the surface and the end parts of the structure are uneven, molten aluminum enters the left side, the middle part and the right side of the housing cavity 400 through the ingate 310, the ingate 320 and the outflow end of the ingate 330 at different positions of the housing, the effective transmission of pouring pressure and the compactness of the housing tissue are ensured, the filling path of the molten aluminum in the housing cavity 400 is reasonably distributed, the heat loss is reduced, the stable molten aluminum filling is ensured, and the pouring efficiency is improved.
Further, as shown in fig. 2, in this embodiment, the lap joint forms of the joints of the ingate 310, the ingate 320 and the ingate 330 and the housing cavity 400 are different, the lap joint forms of the ingate 310, the ingate 320 and the ingate 330 and the housing cavity 400 are different and directly determine the initial flowing state of molten aluminum when the molten aluminum enters the housing cavity 400, the left lower part and the right lower part of the housing cavity 400 belong to a deep cavity type structure, the middle lower part of the housing cavity belongs to a flat plate type structure, and the joint of the left ingate 310 and the housing cavity 400 adopts an end face connection form for adapting to the flat plate and the deep cavity at the lower end of the housing cavity 400, the joint of the middle ingate 320 and the housing cavity 400 adopts a side face connection form, and the joint of the right ingate 330 and the housing cavity 400 adopts an end face connection form, and when the outflow end of the intermediate ingate 320 is 10 mm higher than the inflow end, the phenomenon of air entrainment generated when the molten aluminum enters the shell cavity 400 is further prevented.
Still further, in this embodiment, an included angle between the direction in which the molten aluminum flows out of the left inner runner 310 into the cavity 400 and the lower wall of the cavity 400 is set to be a jet angle of 30 to 60 degrees, and an included angle between the direction in which the molten aluminum flows out of the right inner runner 330 into the cavity 400 and the lower wall of the cavity 400 is set to be a jet angle of 30 to 60 degrees. Preferably, when the angle between the direction of injecting the molten aluminum into the cavity 400 from the outflow end of the left ingate 310 and the lower wall of the cavity 400 is set to be 60 degrees, and the angle between the direction of injecting the molten aluminum into the cavity 400 from the outflow end of the right ingate 330 and the lower wall of the cavity 400 is set to be 60 degrees, molten aluminum can smoothly pass through the sprue 100 and the cross runner 200 in sequence, finally enters the shell cavity 400 through the mixed lap joint type ingate 310, the ingate 320 and the ingate 330 at different jet angles, and is stably filled after entering the shell cavity 400, so that the local resistance coefficient and pressure loss of the molten aluminum when initially entering the shell cavity 400 are reduced, the front impact of the molten aluminum on the inner side of the shell cavity 400 is greatly relieved, the generation of vortex and turbulent flow areas and the generation of defects of air holes, loose structures and the like are avoided, and the compactness and the yield of shell tissues are effectively improved.
The above description is only for one embodiment of the present invention, but not for limiting the claims, and any person skilled in the art can make equivalent changes or modifications according to the technical solution of the present invention within the technical scope of the present invention.
The present invention is not concerned with parts which are the same as or can be implemented using prior art techniques.
Claims (8)
1. The utility model provides a mixed overlap joint formula ingate system of aluminum alloy die-casting transmission housing which characterized in that: the device is formed by sequentially connecting a shell cavity, an ingate, a cross gate and a sprue; the outflow ends of the ingates are arranged at the left lower part, the middle lower part and the right lower part of the shell cavity in a shape-following manner, and the connecting parts of the ingates and the shell cavity are different in lap joint form; molten aluminum enters the shell cavity through the outflow end of the inner pouring channel at different jet angles; the cross section area of the outflow end of the cross runner is larger than the total cross section area of the outflow end of the inner runner, and the cross section area gradually decreases.
2. The hybrid lap-joint ingate system of an aluminum alloy die-cast transmission housing according to claim 1, wherein: the ingate system comprises 1 sprue, 1 cross runner, 3 ingates and 1 shell cavity.
3. The hybrid lap-joint ingate system of an aluminum alloy die-cast transmission housing according to claim 1, wherein: the joint of the left ingate and the shell cavity adopts an end face connection form; the connection part of the middle ingate and the shell cavity adopts a side connection mode; and the joint of the right ingate and the shell cavity adopts an end face connection form.
4. The hybrid lap-joint ingate system of an aluminum alloy die-cast transmission housing according to claim 1, wherein: the boundary lines of the two sides of the inner pouring channel are parallel.
5. The hybrid lap-joint ingate system of an aluminum alloy die-cast transmission housing according to claim 1, wherein: the height of the outflow end of the intermediate ingate above the inflow end of the intermediate ingate is set in the range of 10 to 25 mm.
6. The hybrid lap-joint ingate system of an aluminum alloy die-cast transmission housing according to claim 1, wherein: the included angle between the direction of the molten aluminum liquid injected into the cavity from the left ingate and the lower wall of the cavity is set to be 30 to 60 degrees; and the included angle between the direction of injecting molten aluminum into the cavity from the right ingate and the lower wall of the cavity is set to be 30 to 60 degrees.
7. The hybrid lap-joint ingate system of an aluminum alloy die-cast transmission housing according to claim 1, wherein: the joints of the ingate, the cross gate and the sprue are in fillet transition; the junction fillet radius is in the range of 2 to 10 millimeters.
8. The hybrid lap-joint ingate system of an aluminum alloy die-cast transmission housing according to claim 1, wherein: the cross section area of the outflow end of the cross runner is larger than the total cross section area of the outflow ends of the plurality of inner runners, and the cross section area gradually decreases; the ratio of the cross section area of the outflow end of the cross runner to the total cross section area of the outflow ends of the plurality of inner runners is 3-4: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210256269.0A CN114603109B (en) | 2022-03-16 | 2022-03-16 | Mixed lap joint type ingate system of aluminum alloy die-casting gearbox shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210256269.0A CN114603109B (en) | 2022-03-16 | 2022-03-16 | Mixed lap joint type ingate system of aluminum alloy die-casting gearbox shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114603109A true CN114603109A (en) | 2022-06-10 |
| CN114603109B CN114603109B (en) | 2023-09-08 |
Family
ID=81863746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210256269.0A Active CN114603109B (en) | 2022-03-16 | 2022-03-16 | Mixed lap joint type ingate system of aluminum alloy die-casting gearbox shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114603109B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084557A (en) * | 2014-07-24 | 2014-10-08 | 永泰电子（东莞）有限公司 | Gating system used for ultrathin connector shells |
| CN104084558A (en) * | 2014-07-24 | 2014-10-08 | 永泰电子（东莞）有限公司 | Gating system of ultra-thin metal shell |
| KR20170013527A (en) * | 2015-07-28 | 2017-02-07 | 이상훈 | Method for manufacturing hollow annulus shell for automotive transmission |
| CN211965878U (en) * | 2020-04-14 | 2020-11-20 | 东莞市兴茂压铸有限公司 | Aluminum-silicon alloy die for thin-wall large-area special-shaped die castings |
| CN212350319U (en) * | 2020-05-14 | 2021-01-15 | 东莞市兴茂压铸有限公司 | Gating system of simple low-cost die high-silicon aluminum alloy die casting |
| CN112453345A (en) * | 2020-11-05 | 2021-03-09 | 东莞市兴茂压铸有限公司 | Die-casting system and die-casting process for preparing aluminum alloy die-casting |
-
2022
- 2022-03-16 CN CN202210256269.0A patent/CN114603109B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084557A (en) * | 2014-07-24 | 2014-10-08 | 永泰电子（东莞）有限公司 | Gating system used for ultrathin connector shells |
| CN104084558A (en) * | 2014-07-24 | 2014-10-08 | 永泰电子（东莞）有限公司 | Gating system of ultra-thin metal shell |
| KR20170013527A (en) * | 2015-07-28 | 2017-02-07 | 이상훈 | Method for manufacturing hollow annulus shell for automotive transmission |
| CN211965878U (en) * | 2020-04-14 | 2020-11-20 | 东莞市兴茂压铸有限公司 | Aluminum-silicon alloy die for thin-wall large-area special-shaped die castings |
| CN212350319U (en) * | 2020-05-14 | 2021-01-15 | 东莞市兴茂压铸有限公司 | Gating system of simple low-cost die high-silicon aluminum alloy die casting |
| CN112453345A (en) * | 2020-11-05 | 2021-03-09 | 东莞市兴茂压铸有限公司 | Die-casting system and die-casting process for preparing aluminum alloy die-casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114603109B (en) | 2023-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201147825Y (en) | Pouring channel structure of automobile gearbox main casing cast die | |
| CN111659856B (en) | Concatemer solid blade pouring system and pouring method | |
| CN202343868U (en) | Pouring gate structure for gravity casting of flexural zinc alloy casting | |
| CN114603109A (en) | Mixed lap joint type ingate system of aluminum alloy die-casting gearbox shell | |
| CN205128855U (en) | Aluminum alloy becomes a section formula the gating system | |
| CN208341659U (en) | A kind of mold of butterfly valve body | |
| CN108436039B (en) | Container corner fitting casting mould for technology | |
| CN206748948U (en) | Sprue bush with refrigerating function | |
| CN206588308U (en) | Coupler body casting system | |
| CN206614003U (en) | Coupler body casting system | |
| CN213856955U (en) | Wind power hub pouring system | |
| CN211965878U (en) | Aluminum-silicon alloy die for thin-wall large-area special-shaped die castings | |
| CN202498195U (en) | Aluminium alloy semi-continuously cast crystallizer with variable intensity | |
| CN110586872B (en) | Casting system of hollow slab steel casting for valve and design method thereof | |
| CN201702350U (en) | Automobile silicon-oil clutch die-casting mould | |
| CN201217059Y (en) | Low pressure casting mould structure of aluminium alloy wheel hub | |
| CN207787659U (en) | Die casting | |
| CN206028658U (en) | Box body casting's die cavity structure behind wind generating set | |
| CN211564460U (en) | Die casting system of die casting engine support | |
| CN110918895A (en) | Low-cost vertical casting system of engine cylinder block | |
| CN106541085A (en) | Coupler body casting system | |
| CN208976757U (en) | Improve the casting mould of flywheel product yield | |
| CN2447086Y (en) | Metal die with several sprue gates | |
| CN212734051U (en) | Oil duct orifice plate casting gating system | |
| CN220387853U (en) | Box advances to water structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |