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US 2016/0250677 A1Published application
Device and method for hot stamping
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorHo Young KONG
Life of this patent
Estimating the term…
Abstract
A device for hot stamping includes a lower mold having a shape corresponding to a bottom of a product material. An upper mold has a shape corresponding to a top of the product material and presses the product material with the lower mold. A blank holder is disposed inside the upper mold and fixes a blank between the upper mold and the lower mold. A cam has a shape corresponding to a flange of the product material and forms the flange of the product material by moving up or down along an inner side of the blank holder.
Claims8
A method of hot stamping, comprising steps of:
- fixing a blank between a lower mold and an upper mold of a device for hot stamping;
- pressing and forming the blank with the lower mold and the upper mold;
- rapidly cooling a portion of the blank, which is in contact with the lower mold and the upper mold and slowly cooling a flange of a product material, which is not in contact with the lower mold and the upper mold;
- and
- forming the flange by a cam.
2 more elements
Dependencies are inferred from the claim text.