Heating furnace for press hardening process
AssigneeHyundai Steel Company
InventorsKanghee Ko, Chisang Yoon, Soonyong Kwon
Life of this patent
Estimating the term…
Abstract
A heating furnace according to an embodiment of the present invention includes: a furnace body that has an inlet at the upper portion through which a steel sheet blank is inserted from a wound coil and an outlet at the lower portion through which the steel sheet blank is discharged, and has a cylindrical structure having a space for conveying the steel sheet blank; a conveyer that is spirally disposed on the inner circumference of the furnace body and sequentially conveys the steel sheet blank from the inlet at the upper portion and the outlet at the lower portion; and a clamping means that is disposed at one side of the conveyer and selectively clamps the steel sheet blank.
Claims15
A heating furnace for press hardening process, comprising:
- a furnace body comprising a plurality of fire holes, and an inlet and an outlet located at an upper portion and a lower portion, respectively;
- a conveyer having a spiral shaped configuration, disposed inside the furnace body, and configured to circulate by track circulation;
- and
- a clamp device attached to the conveyer and configured to clamp and convey a steel sheet blank,
- wherein the clamp device comprises:
- a fixed block fixed to the conveyer,
- a movable block spaced from the fixed block, corresponding to the fixed block and movable forward/backward to clamp the steel sheet blank by a moving unit, and
- conveying rollers installed to the fixed block and the movable block and rotatable by driving force of a motor.
A heating furnace for press hardening process, comprising:
- a furnace body having an inlet and an outlet;
- a conveyer having a spiral shaped configuration, disposed inside the furnace body, and configured to circulate by track circulation;
- a clamp device attached to the conveyer and configured to clamp and convey a steel sheet blank;
- an inserting device disposed close to the inlet of the furnace body and having a plurality of rotatable conveying rollers to convey the steel sheet blank to the clamp device;
- and
- a discharge device disposed close to the outlet of the furnace body and configured to transfer the steel sheet blank discharged out of the furnace body to the press and shield the steel sheet blank from the external air,
- wherein the clamp device comprises:
- a fixed block fixed to the conveyer,
- a movable block spaced from the fixed block, corresponding to the fixed block and movable forward/backward to clamp the steel sheet blank by a moving unit, and
- conveying rollers installed to the fixed block and the movable block and rotatable by driving force of a motor.
A heating furnace for press hardening process, comprising:
- a furnace body that has an inlet and an outlet;
- a conveyer having a spiral shaped configuration, disposed inside the furnace body, and configured to circulate by track circulation;
- and
- clamp devices attached to the conveyer and configured to clamp and convey a steel sheet blank,
- wherein at least one of the clamp devices comprises:
- a fixed block fixed to the conveyer,
- a movable block spaced from the fixed block, corresponding to the fixed block and movable forward/backward to clamp the steel sheet blank by a moving unit, and
- conveying rollers installed to the fixed block and the movable block and rotatable by driving force of a motor.
A heating furnace for press hardening process, comprising:
- a furnace body that has an inlet and an outlet;
- a conveyer having a spiral shaped configuration, disposed inside the furnace body, and configured to circulate by track circulation, wherein the conveyer comprises an inner conveyer portion and an outer conveyer portion circulate in opposite directions;
- clamp devices attached to the conveyer and configured to clamp and convey a steel sheet blank;
- a position sensor configured to sense whether the clamp devices of the inner conveyer portion and the outer conveyer portion are aligned and configured to output an electric signal;
- and
- a controller configured to output a control signal for conveying the steel sheet blank to the clamp device in response to a signal from the position sensor after determining that the clamp devices of the inner conveyer portion and the outer conveyer portion are aligned.
Dependencies are inferred from the claim text.