CN-121972638-A - Vacuum casting fixed-point pouring device and equipment

CN121972638ACN 121972638 ACN121972638 ACN 121972638ACN-121972638-A

Abstract

The invention relates to the technical field of vacuum casting, in particular to a vacuum casting fixed-point pouring device and equipment. The device comprises a smelting furnace unit, a support unit, a lifting unit and a turnover unit, wherein the smelting furnace unit comprises a smelting furnace body and a furnace mouth, one end of the lifting unit is rotationally connected with the smelting furnace unit around a first axis, the other end of the lifting unit is fixedly connected with the support unit, one end of the turnover unit is rotationally connected with the smelting furnace unit around a second axis, the other end of the turnover unit is rotationally connected with the support unit around a third axis, the first axis, the second axis and the third axis are mutually parallel and have a distance, the distance between the second axis and the third axis is adjusted along with the telescopic action of the turnover unit, and the problem that the falling point accuracy of a molten metal in the pouring process cannot be guaranteed due to the fact that the falling point of the molten metal easily deviates from the preset position of a pouring cup caused by the excessive height difference caused by the vacuum condition of a heat insulation chamber is solved.

Inventors

JIN LEI
LI WANQING
HE YONGLIANG
ZHANG PENGCHENG
LIU ZHIZHONG
XIE HUASHENG
DU BING
YANG JINGMING
Wang Yita
ZHANG HELONG
WEN SHAOWEI
LIU XINFENG

Assignees

中国机械总院集团沈阳铸造研究所有限公司

Dates

Publication Date: 20260505
Application Date: 20260407

Claims (12)

1. A vacuum casting spot-casting apparatus, characterized in that the vacuum casting spot-casting apparatus comprises: the smelting furnace unit comprises a smelting furnace body and a furnace mouth, wherein the furnace mouth is connected with the opening end of the smelting furnace body; A stand unit; the lifting unit is rotatably connected with the smelting furnace unit around a first axis, and the other end of the lifting unit is fixedly connected with the bracket unit; The device comprises a smelting furnace unit, a turnover unit, a support unit, a first axis, a second axis, a third axis, a first vertical line and a second vertical line, wherein one end of the turnover unit is rotationally connected with the smelting furnace unit around a second axis, and the other end of the turnover unit is rotationally connected with the support unit around a third axis; the vacuum casting fixed point pouring device is in a working state, the position height of the first axis is adjusted along with the telescopic action of the lifting unit, and when the first vertical line is in an inclined posture, the first axis is located below an extension line of the first vertical line.
2. The apparatus of claim 1, wherein in the operational state, the first axis is positioned lower than the open end of the furnace body when the open end of the furnace body is oriented vertically upward.
3. The apparatus according to claim 1, wherein the stand unit is located below the melting furnace body in the operating state.
4. A vacuum casting spot-casting apparatus according to claim 3, wherein the first axis and the second axis have a first spacing therebetween, the first spacing being greater than 30% of the diameter of the melting furnace.
5. The apparatus of claim 4, wherein the second axis is spaced from the third axis by a second distance, the first distance being less than the second distance; In the working state, the opening end of the smelting furnace body can be overturned to be arranged obliquely downwards around the first axis.
6. The vacuum casting spot-casting apparatus according to claim 5, wherein in the operating state, when the open end of the melting furnace body is directed vertically upward, the axis of the melting furnace body is located between the first axis and the third axis in a projection along the first axis, and the projection of the melting furnace body covers more than 80% of the projection ratio of the lifting unit and the tilting unit.
7. The apparatus of claim 6, wherein in the operational state, when the open end of the furnace body is oriented vertically upward, the apparatus is positioned on the same side of the axis of the furnace body as the nozzle in projection along the first axis.
8. A vacuum casting spot casting apparatus according to claim 3, wherein the length of the lifting unit is 70% -120% of the axial length of the smelting furnace body.
9. The apparatus of claim 1, wherein the perpendicular from the second axis to the first axis is a second perpendicular; Under the working state, when the opening end of the smelting furnace body is vertically upwards, the included angle between the first vertical line and the second vertical line is 70-90 degrees.
10. The apparatus according to claim 1, further comprising a moving unit that drives the stand unit to move in a horizontal direction in the operating state.
11. A vacuum casting apparatus, characterized in that the vacuum casting apparatus comprises: a vacuum casting spot-casting apparatus according to any one of claims 1 to 10; the vacuum casting fixed-point pouring device is positioned in the smelting vacuum chamber; The vacuum casting fixed point pouring device comprises a smelting vacuum chamber, a heat preservation vacuum chamber, a pouring channel and a pouring cup, wherein the heat preservation vacuum chamber is positioned below the smelting vacuum chamber, the top of the smelting vacuum chamber is provided with the pouring channel, the pouring channel is used for accommodating the pouring cup of a shell unit, and molten metal poured by a smelting furnace unit of the vacuum casting fixed point pouring device can fall into the pouring cup of the pouring channel.
12. The vacuum casting apparatus according to claim 11, further comprising a mold inlet chamber, a transition chamber and a slow cooling chamber, wherein the mold inlet chamber, the transition chamber and the slow cooling chamber are connected in sequence in a horizontal direction, and the heat-insulating vacuum chamber is positioned above the transition chamber.

Description

Vacuum casting fixed-point pouring device and equipment Technical Field The invention relates to the technical field of vacuum casting, in particular to a vacuum casting fixed-point pouring device and equipment. Background Each operation cavity of vacuum casting equipment all need accomplish corresponding process under vacuum environment, in the structural design of current vacuum casting equipment, a smelting chamber for accomplishing metal raw materials smelting operation, with be used for placing the shell and maintain two cavities of heat preservation room of shell temperature mutually independent generally, two cavities can be independent control vacuum environment respectively, this structural design's core effect lies in, when the smelting chamber need break vacuum because of operations such as feeding, maintenance, can not cause the interference to the stable vacuum environment that has established in the heat preservation room, need not to carry out evacuation operation repeatedly to the heat preservation room, can effectively reduce equipment operation energy consumption, shorten whole operation cycle simultaneously, promote production efficiency. The smelting chamber is generally arranged above the heat preservation chamber, and the whole smelting furnace arranged in the smelting chamber is arranged above the pouring cup of the medium-sized shell of the heat preservation chamber by the arrangement, so that the operation requirement of pouring molten metal after smelting is completed is met. However, in order to guarantee the stable vacuum environment in the heat preservation chamber, there is higher difference in height between the furnace mouth of the smelting furnace and the pouring cup of the inner mold shell of the heat preservation chamber, in the operation process of pouring molten metal in the smelting furnace, the molten metal flows out from the furnace mouth and then is influenced by factors such as self gravity, equipment operation vibration and the like in a longer falling stroke, the situation of falling track deviation occurs, and then the deviation between a molten metal falling point and the preset position of the pouring cup is caused, the falling point accuracy of the molten metal pouring process cannot be guaranteed, and the stability of pouring operation is influenced. Disclosure of Invention The invention provides a vacuum casting fixed-point pouring device and equipment, which are used for solving the problems that the preset position of a molten metal drop point and a pouring cup is easy to deviate and the drop point accuracy in the molten metal pouring process cannot be ensured due to the overlarge height difference caused by the vacuum condition of a heat preservation chamber. In a first aspect, the present application provides a vacuum casting spot-casting apparatus comprising: the smelting furnace unit comprises a smelting furnace body and a furnace mouth, wherein the furnace mouth is connected with the opening end of the smelting furnace body; A stand unit; the lifting unit is rotatably connected with the smelting furnace unit around a first axis, and the other end of the lifting unit is fixedly connected with the bracket unit; The device comprises a smelting furnace unit, a turnover unit, a support unit, a first axis, a second axis, a third axis, a first vertical line and a second vertical line, wherein one end of the turnover unit is rotationally connected with the smelting furnace unit around a second axis, and the other end of the turnover unit is rotationally connected with the support unit around a third axis; the vacuum casting fixed point pouring device is in a working state, the position height of the first axis is adjusted along with the telescopic action of the lifting unit, and when the first vertical line is in an inclined posture, the first axis is located below an extension line of the first vertical line. Optionally, in the operating state, when the open end of the smelting furnace body is vertically upward, the position of the first axis is lower than the position of the open end of the smelting furnace body. Optionally, in the working state, the bracket unit is located below the smelting furnace body. Optionally, a first interval is arranged between the first axis and the second axis, and the first interval is more than 30% of the diameter of the smelting furnace body. Optionally, the second axis is spaced from the third axis by a second distance, and the first distance is smaller than the second distance; In the working state, the opening end of the smelting furnace body can be overturned to be arranged obliquely downwards around the first axis. Optionally, in the working state, when the open end of the smelting furnace body is vertically upward, the vacuum casting fixed point pouring device is in a projection along the first axis, the axis of the smelting furnace body is located between the first axis and the third axis, and the projection of the sme