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发明公开
CN105799118A 大截面电动汽车保险杠的制造方法及所用的成型模具 无效 - 驳回

大截面电动汽车保险杠的制造方法及所用的成型模具
摘要：
本发明公开了一种大截面电动汽车保险杠的制造方法。其采用与保险杠匹配的保险杠本体成型模具注塑成型，保险杠本体成型模具上设有呈“米”字型布置的六个热流道，第一热流道和第二热流道分别对应保险杠本体成型模具上的左右两侧的灯具安装孔A设置，第三热流道和第四热流道分别对应保险杠本体成型模具上的左右两侧的灯具安装孔B设置，第五热流道对应保险杠本体成型模具上侧内分型面中心设置，第六热流道对应保险杠本体成型模具上的牌照安装部设置，四个灯具安装孔的上部和下部均分别设有一个分浇口，保险杠本体成型模具的上侧内分型面和牌照安装部均分别设置一个分浇口；注塑时，熔融状态的聚丙烯经热流道的各分浇口注射到保险杠本体成型模具内。
摘要（英）：

The invention discloses a manufacturing method for a large-section electric automobile bumper. A bumper body forming mold matched with the bumper is adopted in the manufacturing method for injection molding. Six hot runners arranged in an * shape are arranged on the bumper body forming mold. The first hot runner is arranged by corresponding to a lamp installation hole A in the left side on the bumper body forming mold, and the second hot runner is arranged by corresponding to a lamp installation hole A in the right side on the bumper body forming mold. The third hot runner is arranged by corresponding to a lamp installation hole B in the left side of the bumper body forming mold, and the fourth hot runner is arranged by corresponding to a lamp installation hole B in the right side on the bumper body forming mold. The fifth hot runner is arranged by corresponding to the center of an inner parting surface of the upper side of the bumper body forming mold. The sixth hot runner is arranged by corresponding to a license plate installation part on the bumper body forming mold. Each of the upper portion and the lower portion of each of the four lamp installation holes is provided with a branch sprue. The inner parting surface of the upper side of the bumper body forming mold and the license plate installation part of the bumper body forming mold are each provided with a branch sprue. During injection molding, molten polypropylene flows through all the sprues of the hot runners and is injected into the bumper body forming mold.

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