CN217315754U - Gravity casting mold for upper core-pulling piston - Google Patents
Gravity casting mold for upper core-pulling piston Download PDFInfo
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- CN217315754U CN217315754U CN202220347598.1U CN202220347598U CN217315754U CN 217315754 U CN217315754 U CN 217315754U CN 202220347598 U CN202220347598 U CN 202220347598U CN 217315754 U CN217315754 U CN 217315754U
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Abstract
The utility model relates to an on loose core piston gravity casting mould, it includes the cast mould body of loose core piston gravity, the mould body includes: a pouring channel for pouring molten aluminum, wherein one end of the pouring channel is provided with a pouring gate; the inner runner is used for guiding the flow of the molten aluminum and is symmetrically and vertically communicated with the other end of the pouring channel; the cavity is used for casting a piston, is arranged at two ends of the inner runner and is arranged in a mirror symmetry manner; risers for storing gas slag, which are respectively communicated with two ends of the cavity; the inner runner is communicated with the die cavity through a riser at one end of the die cavity, a buffer cavity for buffering aluminum water is arranged at the communication position of the inner runner and the pouring gate, and the technical scheme is adopted to reduce gas slag of a piston blank, improve the internal structure of the piston, improve the performance of the piston and improve the yield of the piston.
Description
Technical Field
The utility model relates to a metal mold gravity casting aluminum piston blank field, concretely relates to go up piston gravity casting mould of loosing core.
Background
The piston blank production of engine piston production enterprises still adopts aluminum alloy metal mold gravity casting, and the gravity casting refers to a process of injecting molten metal into a casting mold under the action of gravity, and also refers to gravity casting.
A herringbone pouring gate of a die for gravity casting of the upper core-pulling piston used in the prior art has large impact force, is easy to form but difficult to block slag, has a plurality of involved air holes and slag holes, and is easy to cause gas slag to rush into a casting cavity to form a casting defect; in addition, the sectional area of the inner pouring gate is too small, so that the pouring time is too long, and the defect of insufficient pouring (under-casting) is higher.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a reduce piston blank gas sediment, improve piston inner structure, promote the cast mould of piston gravity of loosing core on of the performance of piston.
The utility model discloses an on loose core piston gravity casting mould adopts following technical scheme: it includes the cast mould body of upper core-pulling piston gravity, the mould body includes:
a pouring channel for pouring molten aluminum, wherein one end of the pouring channel is provided with a pouring gate;
the inner runner is used for guiding the flow of the molten aluminum and is symmetrically and vertically communicated with the other end of the pouring channel;
the cavity is used for casting a piston, is arranged at two ends of the inner runner and is arranged in a mirror symmetry manner;
risers for storing gas slag, which are respectively communicated with two ends of the cavity;
the inner runner is communicated with the cavity through a riser at one end of the cavity, and a buffer cavity for buffering molten aluminum is arranged at the communication position of the inner runner and the pouring channel.
Further, the inner runner is an arc runner.
Furthermore, the length range of the buffer cavity is 25-27mm, the width range is 24-26mm, and the height range is 29-31 mm.
Further, the length of the buffer cavity is 26.08mm, the width is 25mm, and the height is 30 mm.
Furthermore, the width of the inner flow channel ranges from 14 mm to 15mm, and the height ranges from 8.5 mm to 9.5 mm.
Further, the inner flow channel width is 14.69mm, and the height is 9 mm.
Furthermore, the height of the dead head is 44.71mm, the width is 23mm, and the height is 20 mm.
Furthermore, the pouring gate is a horn-shaped channel with a pouring gate contracting towards the direction of the buffer cavity, the widest part of the inner diameter of the pouring gate is 33.16mm, and the narrowest part of the inner diameter of the pouring gate is 17.16 mm.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. adding a buffer cavity at the communication position of the inner runner and the pouring gate, so that aluminum water enters the buffer cavity before being flushed into the cavity, the buffer cavity plays a buffering role, and gas slag is flushed into the dead head;
2. the arc runner is adopted, the bottom pouring type runner has small impact force, stable pouring, slag blocking, less involved air holes and slag holes and easily controlled reject ratio;
3. the sectional area of the main pouring gate is widened, the pouring time is shortened, the aluminum water filling capacity is increased, and the poor insufficient pouring (under-casting) of the piston is improved.
Drawings
The accompanying drawings, which are described herein to provide a further understanding of the application, are included in the following description:
FIG. 1 is a three-dimensional structure diagram of a mold body according to an embodiment of the present invention;
fig. 2 is a cross-sectional view taken at a-a in fig. 1.
Detailed Description
Referring to fig. 1 and 2, an embodiment of the upper core back piston gravity casting mold includes a mold body for upper core back piston gravity casting, where the mold body includes:
a pouring channel 1 for pouring molten aluminum, wherein one end of the pouring channel is provided with a pouring gate 11;
the inner runner 3 is used for guiding the flow of the molten aluminum and is symmetrically and vertically communicated with the other end of the pouring channel 1;
the cavity 5 is used for casting a piston, is arranged at two ends of the inner runner 3 and is arranged in a mirror symmetry manner;
the riser 4 is used for storing gas slag and is respectively communicated with two ends of the cavity 5;
the inner runner 3 is communicated with the cavity 5 through a riser 4 at one end of the cavity 5, and a buffer cavity 2 for buffering aluminum water is arranged at the communication position of the inner runner 3 and the pouring channel 1.
Further, the inner runner 3 is an arc runner.
Further, the length of the buffer cavity 2 ranges from 25mm to 27mm, the width ranges from 24 mm to 26mm, and the height ranges from 29 mm to 31 mm.
Further, the length of the buffer cavity 2 is 26.08mm, the width is 25mm, and the height is 30 mm.
Further, the width of the inner runner 3 ranges from 14 mm to 15mm, and the height ranges from 8.5 mm to 9.5 mm.
Further, the width of the inner flow passage 3 is 14.69mm, and the height thereof is 9 mm.
Further, the feeder 4 has a length of 44.71mm, a width of 23mm and a height of 20 mm.
Furthermore, the pouring gate 1 is a trumpet-shaped channel with a sprue 11 contracting towards the buffer cavity 2, the widest part of the inner diameter of the pouring gate 1 is 33.16mm, and the narrowest part of the inner diameter of the pouring gate 1 is 17.16 mm.
The utility model discloses a theory of operation:
the aluminum water is poured from a pouring gate 1 as a pouring gate 11, flows into a buffer cavity 2, is guided by an arc-shaped inner runner 3 to flow into a riser 4, flows into a cavity 5, and is blown into a riser 6 by the structure of the buffer cavity 2 and the arc-shaped runner 3.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an on loose core piston gravity casting mould, includes the cast mould body of loose core piston gravity, the mould body includes:
a pouring channel for pouring molten aluminum, wherein one end of the pouring channel is provided with a pouring gate;
the inner runner is used for guiding the flow of the molten aluminum and is symmetrically and vertically communicated with the other end of the pouring channel;
the cavity is used for casting a piston, is arranged at two ends of the inner runner and is arranged in a mirror symmetry manner;
risers for storing gas slag, which are respectively communicated with two ends of the cavity;
the inner runner is communicated with the cavity through a riser at one end of the cavity, and the aluminum water buffer device is characterized in that a buffer cavity for buffering aluminum water is arranged at the communication part of the inner runner and the pouring channel.
2. The gravity casting mold for the upper core-pulling piston according to claim 1, wherein the inner runner is an arc runner.
3. The gravity casting mold for the loose core piston as claimed in claim 1, wherein the buffer cavity is 25-27mm long, 24-26mm wide and 29-31mm high.
4. The gravity casting mold for the core-pulling-up piston as claimed in claim 1, wherein the buffer cavity is 26.08mm long, 25mm wide and 30mm high.
5. The gravity casting mold for the upper core-pulling piston as claimed in claim 1, wherein the width of the inner flow channel is in a range of 14-15mm, and the height of the inner flow channel is in a range of 8.5-9.5 mm.
6. The gravity casting mold for the upper core-pulling piston as claimed in claim 1, wherein the width of the inner flow channel is 14.69mm, and the height of the inner flow channel is 9 mm.
7. The gravity casting mold of claim 1, wherein the feeder head is 44.71mm long, 23mm wide and 20mm high.
8. The gravity casting mold of claim 1, wherein the runner is a flared channel with a sprue converging towards the buffer cavity, the widest part of the inner diameter of the runner is 33.16mm, and the narrowest part of the inner diameter of the runner is 17.16 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220347598.1U CN217315754U (en) | 2022-02-21 | 2022-02-21 | Gravity casting mold for upper core-pulling piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220347598.1U CN217315754U (en) | 2022-02-21 | 2022-02-21 | Gravity casting mold for upper core-pulling piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217315754U true CN217315754U (en) | 2022-08-30 |
Family
ID=82998240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220347598.1U Active CN217315754U (en) | 2022-02-21 | 2022-02-21 | Gravity casting mold for upper core-pulling piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217315754U (en) |
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2022
- 2022-02-21 CN CN202220347598.1U patent/CN217315754U/en active Active
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