Wide aluminum strip profile extrusion die

CN224687586UActive Publication Date: 2026-08-28FUJIAN NANPING ALUMINUM
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Patent Information

Application Number
CN202521643654.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-04
Publication Date
2026-08-28
Estimated Expiration
2035-08-04

AI Technical Summary

Technical Problem

[0002]在新能源汽车产业爆发式增长的背景下，车用铝排型材的性能需求已从“轻量化”向“高强度和高精度”升级；以6082合金为例，其在制造厚度超5mm和宽厚比大的实心板类型材时，面临着挤压工艺的多重挑战，一般选择的挤压机类型都普遍较小，其挤压筒直径都小于型材的外接圆直径；传统平模因导板宽展量大，导致两侧金属供流不均，加之6082合金流动性差，型材边部尺寸缩水率可达±0.5mm，需通过型孔放大补偿缓解；更棘手的是，由于导板的宽展量大，铝棒的表皮杂质、偏析物等大量储存于导板两侧死区；但随着挤压的进行，型材两侧易出现明显的分层，并伴有大量的气泡缺陷，从而影响到型材的成型尺寸精准度；实际生产中缺陷率高达35%，有缺陷部分都会被丢弃，严重影响成品率

Benefits of technology

本方案通过在导流模的导流孔内壁设置第一斜坡段和第二斜坡段，且第一斜坡段倾斜角度大于第二斜坡段，第一斜坡段与第二斜坡段采用两次变角度导流设计，这样能产生较强的导向力，推动金属更快地向导流孔两侧填充，在金属供应充足后，这样型材两侧端头的尺寸就能够得到可靠保证，不再出现明显的尺寸缩水情况；同时，金属快速填充减少了杂质在导流孔两侧的堆积，从而大大降低了型材表面产生气泡的可能性，进而能够有效提高了型材的成型尺寸精确度。

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Abstract

The utility model relates to aluminium bar section extrusion technical field, especially a kind of wide aluminium bar section extrusion die, including flow guide mould, and the flow guide hole of quadrilateral is set up in the flow guide mould and is penetrated, the first inclined section and the second inclined section of being connected are equipped in the opposite two inner walls of flow guide hole, and the inclination angle of first inclined section is greater than the second inclined section, first inclined section and the second inclined section are designed twice angle change flow guide, it can produce stronger guiding force, promote metal faster to the filling of both sides of flow guide hole, after metal supply is sufficient, the size of the both ends of the section can be reliably guaranteed, no longer obvious size shrinkage condition appears, simultaneously, metal fast filling reduces the accumulation of impurity in both sides of flow guide hole, thereby greatly reduce the possibility that section surface produces bubble, and then the forming size accuracy of section can be effectively improved.
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Claims

1. A wide-width aluminum profile extrusion die, comprising a flow guide die, wherein a quadrilateral flow guide hole is provided through the flow guide die, characterized in that, The guide hole has a first ramp section and a second ramp section connected to each other on its two inner walls. The first ramp section is located near the inlet end of the guide hole, and the second ramp section is located near the outlet end of the guide hole. The inclination angle of the first ramp section is greater than that of the second ramp section.

2. The wide aluminum profile extrusion die according to claim 1, characterized in that, Vertical sections are also provided on the two inner walls opposite to each other of the guide hole. The vertical sections are located between the inlet end of the guide hole and the first slope section on the same side and are connected to the first slope section.

3. The wide aluminum profile extrusion die according to claim 1, characterized in that, On the other two opposite inner walls of the guide hole, there is a recessed platform. There is a gap between the side of the recessed platform near the inlet end of the guide hole and the plane where the inlet end of the guide hole is located.

4. The wide aluminum profile extrusion die according to claim 3, characterized in that, The two sides of the platform that are close to each other on opposite inner walls of the guide hole are inclined away from the center of the guide hole.

5. The wide aluminum profile extrusion die according to claim 4, characterized in that, The inclination angle of the two inner walls of the sinking platform that are close to each other with respect to the guide hole is smaller than the inclination angle of the first slope section.

6. The wide aluminum profile extrusion die according to claim 3, characterized in that, There is a gap between the side of the sinking platform near the outlet end of the guide hole and the plane where the outlet end of the guide hole is located. The gap between the side of the sinking platform near the outlet end of the guide hole and the plane where the outlet end of the guide hole is located is smaller than the gap between the side of the sinking platform near the inlet end of the guide hole and the plane where the inlet end of the guide hole is located.

7. The wide aluminum profile extrusion die according to claim 1, characterized in that, It also includes a mold that engages with the flow guide mold, the mold having a through hole for forming a profile, the through hole being opposite to the flow guide hole, the flow guide groove being surrounded by the periphery of the through hole, and the groove wall being inclined.

8. The wide aluminum profile extrusion die according to claim 7, characterized in that, The distance between the wall of the guide channel near the extrusion center of the die and the edge of the die hole is less than the distance between the wall of the guide channel away from the extrusion center of the die and the edge of the die hole.

9. The wide aluminum profile extrusion die according to claim 8, characterized in that, The inclination angle of the channel wall near the extrusion center of the die is smaller than the inclination angle of the channel wall away from the extrusion center of the die.

10. The wide aluminum profile extrusion die according to claim 7, characterized in that, The hole wall at the entrance end of the working zone within the hole is inclined.