CN111054898A - Die casting system for die-casting parts - Google Patents
Die casting system for die-casting parts Download PDFInfo
- Publication number
- CN111054898A CN111054898A CN201911337877.9A CN201911337877A CN111054898A CN 111054898 A CN111054898 A CN 111054898A CN 201911337877 A CN201911337877 A CN 201911337877A CN 111054898 A CN111054898 A CN 111054898A
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- Prior art keywords
- die
- molding cavity
- casting
- overflow
- gate
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Classifications
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- 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
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- 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
Abstract
The invention provides a die casting arrangement system of a die-casting part, which comprises a pouring gate system and a forming cavity, wherein the pouring gate system comprises a pouring gate, a die and a die holder; the runner system comprises a plurality of main runners, and a plurality of branch runners are arranged at the output end of the main runners, wherein the cross-sectional area of the main runners and/or the branch runners is gradually reduced along the conveying direction of molten metal; a plurality of injection gates are arranged on the molding cavity and are communicated with the output ends of the branch pouring channels in a one-to-one correspondence manner; the plane where the inlet gate is located is the top surface of the molding cavity along the conveying direction of the molten metal, so that the molten metal enters the molding cavity from the inlet gate and then directly falls on the bottom surface of the molding cavity; and the distance value between the arrangement position of the in-gate and the bottom surface of the molding cavity comprises the maximum height value of the casting to be molded in the molding cavity. The invention can reduce the generation of internal air holes and shrinkage cavities of the casting under the conventional die-casting condition, improve the product quality and reduce the production cost.
Description
Technical Field
The invention belongs to the technical field of die casting rows, and particularly relates to a die casting row system for die-casting parts.
Background
High-pressure casting is a process technology capable of efficiently manufacturing high-quality automobile die castings. The automobile parts are manufactured by adopting a high-pressure casting process, and the casting has the advantages of stable size, high precision, smooth surface, good smoothness and high production efficiency, and is easy to realize automatic production.
There are various small supports in the automobile engine, which support various moving functional parts. The small-sized support is simple in structure, the die generally adopts a slide-block-free split die mode with one die and multiple cavities, but the wall thickness of a casting is not uniform, a deep cavity exists on the die, and air holes and shrinkage cavities are easily generated in the wall thickness area. And because the support needs to bear certain motion load and vibration in the engine, therefore, has higher requirement to support inside quality.
In the industry, techniques such as vacuum die casting, local extrusion, high-pressure spot cooling and the like are adopted to solve the problems of air holes and shrinkage cavities, but the complexity of the die, the manufacturing cost and the like are greatly increased.
Therefore, how to ensure the casting quality of the casting under the conventional die casting condition has become an important research topic in the field.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a die casting and discharging system for die-casting parts, which can reduce the generation of air holes and shrinkage cavities in castings, improve the product quality and reduce the production cost under the conventional die-casting condition.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a die gating system for die cast components, comprising:
the runner system comprises a plurality of main runners, and the input ends of the main runners are communicated to the molten metal inlet gates; the output end of the main pouring channel is provided with a plurality of branch pouring channels, wherein the cross-sectional area of the main pouring channel and/or the branch pouring channels gradually becomes smaller along the conveying direction of molten metal;
the molding cavities are provided with a plurality of injection gates which are communicated with the output ends of the branch pouring channels in a one-to-one correspondence manner; the plane where the inlet gate is located is the top surface of the molding cavity along the conveying direction of the molten metal, so that the molten metal enters the molding cavity from the inlet gate and then directly falls on the bottom surface of the molding cavity; and the distance value between the arrangement position of the in-gate and the bottom surface of the molding cavity comprises the maximum height value of the casting to be molded in the molding cavity.
Preferably, the bent parts of the main pouring channel and the branch pouring channels are smoothly transited.
Preferably, a surrounding edge structure is arranged at the joint of the branch pouring gate and the pouring gate, and the surrounding edge structure is arranged in a protruding mode back to the molding cavity.
Preferably, the molding device further comprises an overflow system, wherein the overflow system comprises a plurality of overflow grooves, and one end of each overflow groove is communicated with an overflow port of the molding cavity;
the other end of the overflow groove is communicated with the atmosphere.
Preferably, one end of the overflow groove communicated with the atmosphere is provided with an exhaust groove; the exhaust grooves are in one-to-one correspondence with the molding cavities, and the corresponding exhaust grooves between different molding cavities are mutually independent.
Preferably, the inlet gate and the overflow gate are both arranged on a parting surface of the molding cavity.
Preferably, a surrounding edge structure is arranged at the joint of the overflow port and the overflow groove, and the surrounding edge structure is arranged in a protruding manner back to the forming cavity.
Compared with the prior art, the invention has the beneficial effects that:
in the scheme, the sectional area of the branch pouring channel is skillfully set to be gradually reduced, so that the filling speed and pressure of molten metal can be conveniently regulated and controlled, and the molding quality of a casting is ensured; meanwhile, the raised surrounding edge structures are arranged at the position of the pouring gate and the position of the overflow port, so that the situation of meat collapse during the later pouring gate removing operation can be avoided, and the damage rate of the casting is reduced.
In addition, in the scheme, the arrangement position of the pouring gate is staggered with the side wall or the middle structure of the forming cavity, so that the phenomenon that molten metal collides and splashes with the side wall or the middle structure when the molten metal directly rushes into the forming cavity to cause energy loss of the molten metal is avoided; the pressure transmission and pressure supply effects are improved, and the influence of gas on pouring is reduced; simultaneously, will go into runner and overflow mouth setting on the die joint, the molten metal begins to fill in proper order from dark chamber position, fills to the terminal surface position at last, can make things convenient for the quick discharge of gas and cold burden, reduces to be drawn into gas to ensure that the pouring of molten metal targets in place in the shaping chamber.
The pouring and discharging system is good in stability and low in manufacturing cost, and production benefits of castings are effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an application example of the present invention.
FIG. 2 is a schematic structural view of the present invention with a molding cavity as a main viewing angle.
FIG. 3 is a schematic structural diagram of another embodiment of the present invention.
Wherein:
1-runner system, 11-main runner, 12-branch runner;
2-forming cavity, 201-parting surface, 21-pouring gate, 22-overflow port, 23-surrounding edge structure;
3-an overflow discharge system, 31-an exhaust groove and 32-an overflow groove.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
As shown in fig. 1-2, the present embodiment provides a mold gating system for die-casting components, which is mainly applied to the casting of automobile components; comprises a pouring channel system 1, a plurality of molding cavities 2 and a drainage and overflow system 3.
The pouring gate system 1 comprises a plurality of horizontally arranged main pouring gates 11, one end of each main pouring gate 11 is an input end of metal casting liquid, and the output end of each main pouring gate 11 is provided with a plurality of branch pouring gates 12; wherein the cross-sectional area of the plurality of branch runners 12 gradually decreases in the conveying direction of the branch runners 12.
As a preferable scheme, when the main runner 11 and the branch runner 12 need to be bent, the bent portions of the main runner 11 and the branch runner 12 are smoothly transitioned without sudden contraction or expansion, so as to avoid pressure loss caused by collision between molten metal and the side wall of the pipeline.
Be provided with a plurality of gates 21 of going into on the die joint 201 of shaping chamber 2, in this embodiment, die joint 201 sets up promptly on the terminal surface of the top of shaping chamber 2. The pouring gate 21 is arranged on one side of the parting surface 201, and a plurality of overflow ports 22 are arranged on the other side of the parting surface 201.
As a preferable scheme, the in-gates 21 correspond to the branch runners 12 one by one and are communicated with each other; and along the direction of delivery of molten metal, when the plane of going into runner 21 is the top surface of shaping chamber 2, molten metal directly falls on the bottom surface of shaping chamber 2 after going into from going into runner 21 behind the shaping chamber 2, go into runner 21 with the lateral wall in shaping chamber 2 is not overlapped, avoids molten metal front impact type wall or other middle part structures. And the distance value between the arrangement position of the pouring gate 21 and the bottom surface of the molding cavity 2 comprises the maximum height value of a casting to be molded in the molding cavity 2, so that the pouring at a higher or deeper position can be performed from the bottom to the top, and the generation of air holes and shrinkage cavities is further avoided.
The area of the output port of the branch pouring gate 12 is larger than that of the inlet gate 21, and the flow speed and the filling direction of each strand of molten metal are controlled by adjusting the sectional area and the trend of each pouring gate, so that the molten metal flowing through each position has enough pressure.
As a preferable scheme, a surrounding edge structure 23 is further arranged at the connecting position of the branch pouring gate 12 and the sprue 21 and the position of the overflow port 22, and the surrounding edge structure 23 is arranged in a protruding manner back to the molding cavity 2, so that the sprue removal at the later stage of the casting is facilitated, the situation of meat collapse during the sprue removal is prevented, and the damage rate of the casting is reduced.
The overflow system 3 is communicated with the overflow port 22, the overflow system 3 comprises an exhaust groove 31, one end of the exhaust groove 31 is communicated with the overflow port 22, and the other end of the exhaust groove 31 is communicated with the atmosphere.
Furthermore, an overflow groove 32 is arranged at one end of the exhaust groove 31 communicated with the overflow port 22, and the exhaust groove 31 is communicated with the upper end of the overflow groove 32 so as to stagger the position of the air port of the exhaust groove 31 and the position of the overflow port 22, thereby ensuring that the exhaust function and the overflow function are not conflicted with each other, saving the occupied space of the mold and simplifying the structure.
In the embodiment, four molding cavities 2 are arranged and arranged side by side in a straight shape along the length direction of the molding cavities; the gate inlets 21 are respectively and correspondingly arranged on the same side of the molding cavity 2, so that the runner system 1 and the overflow system 3 are respectively arranged on two sides of the molding cavity 2.
As a preferable scheme, the overflow systems 3 and the molding cavities 2 are uniformly and correspondingly arranged, so that the overflow systems 3 correspondingly arranged in each molding cavity 2 are mutually independent, and the corresponding exhaust grooves 31 between different molding cavities 2 are mutually independent, thereby avoiding the influence on the operation in another molding cavity 2 caused by different pouring processes of each molding cavity 2.
Example 2
As shown in fig. 3, the present embodiment provides a mold gating system for die-casting parts, which is mainly different from embodiment 1 in that the present embodiment is mainly applied to the casting operation of the engine bracket; comprises a pouring channel system 1, a molding cavity 2 and an overflow system 3; during casting, molten metal is input into the runner system 1 and is conveyed to the forming cavity 2 through the runner system 1 to cast the engine bracket, and partial molten metal and gas generated in the casting process are output through the overflow system 3.
The runner system 1 comprises a plurality of main runners 11 and a plurality of branch runners 12, wherein the output end of the main runner 11 is connected with the input end of the branch runner 12 at an angle, and as a preferred scheme, the angle of the connection position of the main runner 11 and the branch runner 12 is an obtuse angle; the junction between the main runner 11 and the branch runner 12 is in a circular arc transition.
Further, the cross-sectional area of the branch runners 12 becomes gradually smaller in the conveying direction of the branch runners 12; preferably, the inner conveying channel of the branch runner 12 has a smooth transition from the input end to the output end of the branch runner 12 without sudden contraction or expansion, so as to avoid pressure loss caused by collision of molten metal with the side wall of the pipe.
A plurality of gate inlets 21 are arranged on the molding cavity 2, and the gate inlets 21 are correspondingly connected with the branch runners 12 one by one; wherein, a plurality of the injection gates 21 are all arranged on the end surface of the same side of the molding cavity 2; and along the liquid inlet direction of the inlet gate 21, the inlet gate 21 is not overlapped with the side wall of the molding cavity 2, so that the front impact of molten metal on the molding wall is avoided.
Further, the area of the delivery port of the branch runner 12 is larger than the area of the in-gate 21; the flow speed and the filling direction of each strand of molten metal are controlled by adjusting the sectional area and the direction of each pouring channel, so that the molten metal flowing through each position has enough pressure.
The drainage and overflow system 3 includes a plurality of drainage grooves 31 and overflow grooves 32.
One end of the exhaust groove 31 is communicated with the molding cavity 2, and the other end of the exhaust groove 31 is communicated with the output end of the overflow groove 32 so as to be communicated with the atmosphere through the same output end.
Further, a plurality of the overflow grooves 32 are disposed on a side wall where a filling end of the molding cavity 2 is located, for example, on a side wall opposite to the in-gate 21, one end of the overflow groove 32 is communicated with the molding cavity 2, and the other end of the overflow groove 32 is communicated with the atmosphere.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (7)
1. A die casting arrangement system for die casting parts, comprising:
the runner system comprises a plurality of main runners, and the input ends of the main runners are communicated to the molten metal inlet gates; the output end of the main pouring channel is provided with a plurality of branch pouring channels, wherein the cross-sectional area of the main pouring channel and/or the branch pouring channels gradually becomes smaller along the conveying direction of molten metal;
the molding cavities are provided with a plurality of injection gates which are communicated with the output ends of the branch pouring channels in a one-to-one correspondence manner; the plane where the inlet gate is located is the top surface of the molding cavity along the conveying direction of the molten metal, so that the molten metal enters the molding cavity from the inlet gate and then directly falls on the bottom surface of the molding cavity; and the distance value between the arrangement position of the in-gate and the bottom surface of the molding cavity comprises the maximum height value of the casting to be molded in the molding cavity.
2. The die gating system for die cast parts as claimed in claim 1, wherein the bends of the main runner and the branch runners are smoothly transitioned.
3. The die gating system for die cast components as claimed in claim 1, wherein a peripheral edge structure is provided at a junction of the branch runner and the sprue, the peripheral edge structure being raised away from the molding cavity.
4. The die casting system for die casting parts according to any one of claims 1 to 3, further comprising an overflow system, wherein the overflow system comprises a plurality of overflow grooves, and one end of each overflow groove is communicated with an overflow port of the forming cavity;
the other end of the overflow groove is communicated with the atmosphere.
5. The die casting system for die casting parts according to claim 4, wherein an exhaust groove is provided at one end of the overflow groove which is communicated with the atmosphere; the exhaust grooves are in one-to-one correspondence with the molding cavities, and the corresponding exhaust grooves between different molding cavities are mutually independent.
6. The die casting system for die casting components according to claim 4, wherein the inlet gate and the overflow gate are disposed on a parting surface of the molding cavity.
7. The die casting system for die-casting parts according to claim 5 or 6, wherein a surrounding edge structure is also arranged at the joint of the overflow port and the overflow groove, and the surrounding edge structure is arranged to protrude away from the forming cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911337877.9A CN111054898A (en) | 2019-12-23 | 2019-12-23 | Die casting system for die-casting parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911337877.9A CN111054898A (en) | 2019-12-23 | 2019-12-23 | Die casting system for die-casting parts |
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| CN111054898A true CN111054898A (en) | 2020-04-24 |
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| CN201911337877.9A Pending CN111054898A (en) | 2019-12-23 | 2019-12-23 | Die casting system for die-casting parts |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111438332A (en) * | 2020-05-22 | 2020-07-24 | 湛江德利车辆部件有限公司 | A mould waters row system for U type automobile parts |
| CN111590050A (en) * | 2020-05-27 | 2020-08-28 | 湛江德利车辆部件有限公司 | Multi-cavity pouring system for aluminum alloy retainer |
| CN113770327A (en) * | 2021-08-04 | 2021-12-10 | 金榀精密工业(苏州)有限公司 | Tree-shaped shunting type die-casting forming structure |
| CN114029470A (en) * | 2021-11-12 | 2022-02-11 | 深圳市海曼科技股份有限公司 | Die-casting die for explosion-proof gas detector and die-casting method thereof |
| CN115415503A (en) * | 2022-09-02 | 2022-12-02 | 上海汽车变速器有限公司 | Mold pouring and discharging system capable of exhausting gas quickly and high-pressure casting mold |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111438332A (en) * | 2020-05-22 | 2020-07-24 | 湛江德利车辆部件有限公司 | A mould waters row system for U type automobile parts |
| CN111590050A (en) * | 2020-05-27 | 2020-08-28 | 湛江德利车辆部件有限公司 | Multi-cavity pouring system for aluminum alloy retainer |
| CN111590050B (en) * | 2020-05-27 | 2022-02-01 | 湛江德利车辆部件有限公司 | Multi-cavity pouring system for aluminum alloy retainer |
| CN113770327A (en) * | 2021-08-04 | 2021-12-10 | 金榀精密工业(苏州)有限公司 | Tree-shaped shunting type die-casting forming structure |
| CN114029470A (en) * | 2021-11-12 | 2022-02-11 | 深圳市海曼科技股份有限公司 | Die-casting die for explosion-proof gas detector and die-casting method thereof |
| CN114029470B (en) * | 2021-11-12 | 2023-03-14 | 深圳市海曼科技股份有限公司 | Die-casting die for explosion-proof gas detector and die-casting method thereof |
| CN115415503A (en) * | 2022-09-02 | 2022-12-02 | 上海汽车变速器有限公司 | Mold pouring and discharging system capable of exhausting gas quickly and high-pressure casting mold |
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Application publication date: 20200424 |
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