New technology for producing new energy automobile bracket mold by vertical line
Technical Field
The invention relates to the technical field of automobile bracket production, in particular to a novel process for producing a novel energy automobile bracket mold by a vertical line.
Background
For castings, the thick and large pieces generally relate to feeding, and the defect that shrinkage porosity and shrinkage porosity are extremely easy to occur in feeding cannot be realized. For new energy automobile support, there is the installation through-hole, and the through-hole sets up with drawing of patterns direction is perpendicular, can't realize casting drawing of patterns. If a hole is not cast, a riser is difficult to set at a thick position of the hole so as to realize feeding of the part, and how to realize production of the part at a vertical line is a difficult problem to be solved and needs better design scheme and thought.
Disclosure of Invention
The invention aims to provide a novel process for producing a new energy automobile bracket die by vertical lines, which solves the problems that a middle hole cannot be demolded and cast and the inside shrinkage cavity is shrinkage cavity during the production of a Di-sand vertical line.
In order to achieve the aim, the invention provides a novel process for producing a new energy automobile bracket mold by using vertical lines, which uses Di sand vertical lines to produce, uses sand cores to mold middle holes of the automobile bracket, and comprises the following steps,
S1, pouring from a pouring cup at a side top, wherein pouring liquid sequentially enters a pouring cavity through a cross runner, a main lap joint and a vertical runner;
S2, when the casting cavity reaches 80%, water is fed through the top riser, and the flow speed is adjusted by the first throttling block and the second throttling block, so that the simultaneous filling of the upper automobile bracket and the lower automobile bracket in the casting cavity is completed.
Preferably, in S1, the center of the top of the cross runner is communicated with the pouring cup, the two sides of the cross runner are communicated with main lap joints, the main lap joints are communicated with vertical runners, and the vertical runners are sequentially communicated with the first throttling block and the second throttling block.
Preferably, in S1, the two sides of the sprue are respectively provided with a casting cavity, and sand cores are placed in the casting cavities.
Preferably, in S2, the top riser is disposed at the top of the side of the sand core near the casting cup, and the top riser is communicated with the sprue through a feeding channel disposed obliquely.
Preferably, in S1, the middle hole of the upper automobile bracket and the middle hole of the lower automobile bracket in the casting cavity share a sand core.
Preferably, in S1, the sprue is in communication with the lower car support of the casting cavity below the second throttle block.
Preferably, in S2, the top riser is a hot riser.
Therefore, the novel process for producing the new energy automobile bracket mold by adopting the vertical line is suitable for producing the lower core cast-out bracket with the middle hole, is formed by a sand mold and a sand core combined mode, is convenient for demolding the middle hole, realizes top-down feeding by adopting a thermal field of the automobile bracket in the casting process, and simultaneously adopts a top riser liquid feeding mode to improve the feeding efficiency of the top riser.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of a novel process for producing a new energy automobile bracket mold by vertical lines;
Figure 2 is a schematic diagram of the connection combination of the automobile bracket and the sand core in the invention,
Wherein (a) in fig. 2 is a cross-sectional view taken along A-A in fig. 2, (b) in fig. 2 is a connection schematic;
Fig. 3 is a schematic cross-sectional view of an automobile bracket according to the present invention.
Reference numerals:
1. pouring cup, 2, cross runner, 3, main lap joint, 4, vertical runner, 5, top riser, 6, sand core, 7, automobile bracket, 8, first throttle block, 9, second throttle block, 10, feeding channel, 11, middle hole.
Detailed Description
The invention will be further described with reference to the drawings and examples. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The above-mentioned features of the invention or the features mentioned in the specific examples can be combined in any desired manner, and these specific examples are only intended to illustrate the invention and are not intended to limit the scope of the invention.
Examples
As shown in fig. 1 and 3, the present invention provides a novel process for producing a new energy automobile bracket mold by vertical lines, using vertical lines of diesand, molding a middle hole 11 portion of an automobile bracket 7 which cannot be demolded by sand cores 6, comprising the steps of,
S1, side-top pouring is carried out at the pouring cup 1, and pouring liquid sequentially enters a pouring cavity through a horizontal pouring channel 2, a main lap joint 3 and a vertical pouring channel 4. In the embodiment, side-top casting is adopted to realize top-down feeding through a thermal field of the automobile bracket 7 in the casting process.
S2, when the casting cavity reaches 80%, water is fed through the top riser 5, and the feeding efficiency of the top riser 5 is improved. The first throttling block 8 and the second throttling block 9 adjust the flow rate of casting liquid, and the simultaneous filling of the upper automobile bracket 7 and the lower automobile bracket 7 in the casting cavity is completed.
In S1, the center of the top of a horizontal pouring channel 2 is communicated with a pouring cup 1, both sides of the horizontal pouring channel 2 are communicated with a main lap joint 3, the main lap joint 3 is communicated with a vertical pouring channel 4, and the vertical pouring channel 4 is sequentially communicated with a first throttling block 8 and a second throttling block 9. The pouring liquid is stably guided into the horizontal pouring gate 2 through the pouring cup 1, the pouring liquid is guided into the main lap joint 3 through the horizontal pouring gate 2, the pouring liquid is guided into the vertical pouring gate 4 through the main lap joint 3, the pouring liquid is guided into the pouring cavity through the vertical pouring gate 4, the speed of the pouring liquid entering the pouring cavity is controlled, and the quality of a finished product of the automobile bracket 7 is guaranteed.
In S1, casting cavities are arranged on two sides of the sprue 4, and sand cores 6 are placed in the casting cavities.
As shown in fig. 2, in S1, the middle hole 11 of the upper automobile bracket 7 and the middle hole 11 of the lower automobile bracket 7 in the casting cavity share one sand core 6, so as to facilitate quick core setting. In this embodiment, the forming of the middle hole 11 is completed through the sand core 6, and the wall thickness of the automobile bracket 7 is uniform by local increment at the middle position of the inner hole of the middle hole 11 of the automobile bracket 7, so as to balance the local heat joint of the automobile bracket 7 and avoid the occurrence of insufficient feeding at the heat joint.
In S1, the sprue 4 communicates with the lower car support 7 of the casting cavity below the second throttle block 9. The arrangement of the first throttling block 8 and the second throttling block 9 filters impurities in casting liquid and adjusts the flow rate of the casting liquid, reduces the impact of the casting liquid on the automobile bracket 7, and reduces the risk of heat cracking of the automobile bracket 7. The casting liquid flows from top to bottom in the sprue 4, the flow speed of the casting liquid is continuously increased along with the increase of the liquid level of the casting liquid, and the liquid level is controlled by adjusting the sizes of the first throttling block 8 and the second throttling block 9, so that the effect of controlling the flow speed is achieved.
In S2, a top dead head 5 is arranged at the top of one side of the sand core 6, which is close to the pouring cup 1, and the top dead head 5 is communicated with the sprue 4 through a feeding channel 10 which is obliquely arranged. The top riser 5 is arranged at a position close to the middle hole 11 of the automobile bracket 7 so as to realize the feeding of the automobile bracket 7 by the top riser 5. In the pouring liquid filling process, part of pouring liquid in the sprue 4 enters the top riser 5 through the feeding channel 10, and the feeding channel 10 is arranged, so that the pouring liquid in the solidification process enters the pouring cavity to fill the shrinkage cavity due to volume shrinkage.
The diameter of one side of the feeding channel 10 close to the top dead head 5 is smaller than the diameter of one side of the feeding channel close to the vertical pouring channel 4, the diameter of one side of the feeding channel 10 close to the vertical pouring channel 4 is gradually increased from the top dead head 5 to the vertical pouring channel 4, the slag avoidance purpose can be achieved through the arrangement of the shape of the feeding channel 10, the purity of casting liquid is improved, and the probability of slag blister defects in the automobile bracket 7 is reduced.
In S2, the top riser 5 is a hot riser, so that shrinkage cavity and shrinkage porosity defects generated by solidification and shrinkage of casting solution are reduced or eliminated.
In the embodiment, by means of CAE simulation technology, the vertical line production by using the Di sand is obtained through repeated adjustment of multiple simulation, the middle hole adopts the lower core, and simultaneously, the scheme of side top pouring and top hot riser is adopted.
Therefore, the novel process for producing the new energy automobile bracket mold by adopting the vertical line is suitable for producing the lower core cast-out bracket with the middle hole, is formed by a sand mold and a sand core combined mode, is convenient for demolding the middle hole, realizes top-down feeding by adopting a thermal field of the automobile bracket in the casting process, and simultaneously adopts a top riser liquid feeding mode to improve the feeding efficiency of the top riser.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted by the same, and the modified or substituted technical solution may not deviate from the spirit and scope of the technical solution of the present invention.