CN211803762U - Cylinder cover low-pressure pouring device of 180-degree turnover metal mold - Google Patents
Cylinder cover low-pressure pouring device of 180-degree turnover metal mold Download PDFInfo
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- CN211803762U CN211803762U CN202020186945.8U CN202020186945U CN211803762U CN 211803762 U CN211803762 U CN 211803762U CN 202020186945 U CN202020186945 U CN 202020186945U CN 211803762 U CN211803762 U CN 211803762U
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Abstract
The invention discloses a cylinder cover low-pressure pouring device of a 180-degree turnover metal mold, which comprises the metal mold, wherein the metal mold is connected with an automatic turnover mechanism, the automatic turnover mechanism is arranged on rails through a conveying and propelling mechanism, a low-pressure furnace is arranged between the rails, and a lifting control mechanism is arranged below the low-pressure furnace. The low-pressure furnace is provided with a liquid lifting pipe, the bottom of the metal mold is provided with a casting auxiliary body butted with the liquid lifting pipe, the casting auxiliary body is internally provided with an inner pouring gate, a cross gate and an inlet pouring gate which are sequentially communicated, the inlet pouring gate of the casting auxiliary body is butted with the pipe orifice of the liquid lifting pipe, and the inner pouring gate of the casting auxiliary body is communicated with the bottom of the metal mold. According to the invention, after the metal mold is vertically turned by 180 degrees by the automatic turning mechanism, the bottom surface and the combustion chamber position have lower temperature and relatively faster solidification when the cylinder cover is formed in the metal mold and the combustion chamber surface corresponding to the cylinder cover faces upwards and the spark plug column surface faces downwards, so that the secondary dendrite spacing at the combustion chamber position meets the relevant requirements, and the quality of a cylinder cover product is improved.
Description
Technical Field
The invention relates to a cylinder cover low-pressure pouring device applying a metal mold.
Background
With the development of science and technology and the progress of society, energy conservation and emission reduction gradually become the mainstream design concept of automobile engines, and the lightweight technology can be said to be the necessary condition of energy conservation and emission reduction of automobiles, so that the cylinder cover serving as a core part of the engine tends to be developed in the direction of low weight, small discharge capacity and high performance. The traditional cylinder cover low-pressure process is basically that the material is fed into the bottom surface or the side surface of a cylinder cover (namely the combustion chamber of the cylinder cover faces downwards, and a spark plug column faces upwards), so that the temperature of the bottom surface and the combustion chamber is high, the solidification is relatively slow, the secondary dendrite spacing of the combustion chamber is large, and the organizational performance of the combustion chamber is negatively influenced. Under the promotion of the innovation of the prior art, a casting process capable of meeting the requirements of cylinder covers with smaller wall thickness, more complex structures and higher performance requirements is urgently needed.
Disclosure of Invention
The invention aims to overcome the technical defects of larger grain size and larger secondary dendrite spacing on the surface of a combustion chamber of a cylinder cover in the traditional low-pressure process, and provides a cylinder cover low-pressure pouring device of a 180-degree turnover metal mold, which has lower temperature and relatively faster solidification corresponding to the position of the combustion chamber of the cylinder cover.
The purpose of the invention is realized by the following technical scheme: the cylinder cover low-pressure pouring device for the metal mold with the 180-degree turnover comprises the metal mold, wherein the metal mold is connected with an automatic turnover mechanism, the automatic turnover mechanism is arranged on rails through a conveying and pushing mechanism, a low-pressure furnace is arranged between the rails, a lifting control mechanism is arranged below the low-pressure furnace, and the metal mold is positioned above the low-pressure furnace.
The low-pressure furnace is provided with a liquid lifting pipe, the bottom of the metal mold is provided with a casting auxiliary body butted with the liquid lifting pipe, the casting auxiliary body is internally provided with an inner pouring gate, a cross gate and an inlet pouring gate which are sequentially communicated, the inlet pouring gate of the casting auxiliary body is butted with the pipe orifice of the liquid lifting pipe, and the inner pouring gate of the casting auxiliary body is communicated with the bottom of the metal mold.
After the automatic turnover mechanism is adopted, the metal die is turned over by 180 degrees up and down by the automatic turnover mechanism, so that the bottom surface and the position of the combustion chamber are relatively low in temperature and relatively quick in solidification when the cylinder cover is formed in the metal die and the combustion chamber corresponding to the cylinder cover faces upwards and the spark plug faces downwards, and the secondary dendrite spacing of the position of the combustion chamber meets related requirements, so that the quality of a cylinder cover product is improved, and the automatic turnover mechanism is particularly suitable for cylinder covers with thin wall thicknesses, complex structures and high performance requirements.
Drawings
FIG. 1 is a schematic view of the cylinder cover low-pressure casting process of the 180-degree turnover metal mold disclosed by the invention.
Fig. 2 is a schematic structural view of the cylinder cover low-pressure pouring device of the 180-degree turnover metal mold.
Detailed Description
As shown in fig. 1 and 2, the cylinder head low-pressure casting device for 180-degree turnover metal molds of the invention comprises a metal mold 4 (with a mold opening and closing mechanism), wherein the metal mold 4 is connected with an automatic turnover mechanism 5, the automatic turnover mechanism 5 is arranged on a rail 7 (two parallel rails) through a conveying and pushing mechanism 8, a low-pressure furnace 6 (crucible type) is arranged between the rails 7, a lifting control mechanism 9 is arranged below the low-pressure furnace 6, and the metal mold 4 is positioned above the low-pressure furnace 6.
The low-pressure furnace 6 is provided with a liquid lifting pipe 3, the bottom of the metal mold 4 is provided with a casting auxiliary body 10 butted with the liquid lifting pipe 3, an inner pouring gate 12, a cross runner 2 and an inlet pouring gate 11 which are sequentially communicated are arranged in the casting auxiliary body 10, the inlet pouring gate 11 of the casting auxiliary body 10 is butted with the pipe orifice of the liquid lifting pipe 3, and the inner pouring gate 12 of the casting auxiliary body 10 is communicated with the bottom (corresponding to the cylindrical surface of a spark plug of a cylinder cover) of the metal mold 4.
According to the cylinder cover low-pressure pouring process of the 180-degree turnover metal mold, which is obtained by the cylinder cover low-pressure pouring device of the 180-degree turnover metal mold, the process comprises the following steps: firstly, after sand cores are placed at corresponding positions in a metal mold (with a mold opening and closing mechanism), closing the mold, turning the metal mold 4 up and down by 180 degrees by an automatic turning mechanism 5 (namely, turning by 180 degrees, facing up corresponding to a combustion chamber of a cylinder cover and facing down corresponding to a spark plug column), and moving the turned metal mold 4 (which is two parallel rows along a track 7) to the position right above a low-pressure furnace 6 (in a crucible mode) by a conveying and propelling mechanism 8; then, a low-pressure furnace 6 (crucible type) automatically ascends to be in butt joint with the metal mold 4, and then low-pressure charging is started; the whole mold filling process is divided into five stages in sequence: (1) liquid rise phase (about 5 s): the high-temperature aluminum liquid rises from a liquid lifting pipe 3 on the low-pressure furnace to a pouring inlet 11 of a pouring auxiliary body 10 at the bottom of the metal mold and enters a cross pouring gate 2 of the metal mold; (2) filling stage (about 16 s): then, the pouring auxiliary body 10 is filled from the bottom of the metal mold (i.e. corresponding to the cylindrical surface of the spark plug of the cylinder head) to the top of the metal mold 4 (i.e. corresponding to the combustion chamber surface of the cylinder head) along the inner sprue 12 of the pouring auxiliary body 2; (3) a supercharging stage (supercharging speed of about 6Kpa/s, supercharging time of about 2 s); (4) a dwell phase (dwell pressure about 33Kpa, dwell time about 260 s); (5) pressure relief stage and solidification of cylinder cover casting: after pressure relief, the low-pressure furnace 6 descends, the automatic turnover mechanism 5 returns to the original position and then reversely overturns the metal mold for 180 degrees to return to the original position (namely the combustion chamber of the cylinder cover faces downwards), then the metal mold 4 is opened, the cylinder cover casting 1 in the metal mold is taken out, and the cavity of the metal mold is cleaned for next casting operation.
Claims (2)
1.180 degree upset metal mold's cylinder cap low pressure pouring device, including metal mold, its characterized in that: the metal mold is connected with an automatic turnover mechanism, the automatic turnover mechanism is arranged on rails through a conveying and pushing mechanism, a low-pressure furnace is arranged between the rails, a lifting control mechanism is arranged below the low-pressure furnace, and the metal mold is positioned above the low-pressure furnace.
2. The cylinder cover low-pressure pouring device of the 180-degree turnover metal mold as claimed in claim 1, wherein: the low-pressure furnace is provided with a liquid lifting pipe, the bottom of the metal mold is provided with a casting auxiliary body butted with the liquid lifting pipe, the casting auxiliary body is internally provided with an inner pouring gate, a cross gate and an inlet pouring gate which are sequentially communicated, the inlet pouring gate of the casting auxiliary body is butted with the pipe orifice of the liquid lifting pipe, and the inner pouring gate of the casting auxiliary body is communicated with the bottom of the metal mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020186945.8U CN211803762U (en) | 2020-02-02 | 2020-02-02 | Cylinder cover low-pressure pouring device of 180-degree turnover metal mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020186945.8U CN211803762U (en) | 2020-02-02 | 2020-02-02 | Cylinder cover low-pressure pouring device of 180-degree turnover metal mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211803762U true CN211803762U (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020186945.8U Active CN211803762U (en) | 2020-02-02 | 2020-02-02 | Cylinder cover low-pressure pouring device of 180-degree turnover metal mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211803762U (en) |
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2020
- 2020-02-02 CN CN202020186945.8U patent/CN211803762U/en active Active
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