A press mold for forming a panel, may include an upper die for vertically operating by an upper press, and having a mounting recess recessed upward at a lower surface central portion, a lower die disposed under the upper die, and configured to the vertically operate by a lower press, an upper pad disposed in a center portion of the mounting recess, and formed with an upper forming surface at a lower surface edge portion, a lower steel disposed under the upper pad, mounted on the lower die, and formed with a lower forming surface at an upper surface edge portion of the lower steel corresponding to the upper forming surface, and an upper steel mounted on the upper die at a position exterior to the lower forming surface.
1. A press mold for forming a panel, the press mold comprising:
an upper die for vertically operating by an upper press, and having a mounting recess recessed upward at a lower surface central portion of the upper die;
a lower die disposed under the upper die;
an upper pad disposed in a center portion of the mounting recess, and formed with an upper forming surface at a lower surface edge portion of the upper pad;
a lower steel disposed under the upper pad, mounted on the lower die, and formed with a lower forming surface at an upper surface edge portion of the lower steel corresponding to the upper forming surface; and
an upper steel mounted on the upper die at a position exterior to the lower forming surface,
wherein the upper pad is elastically supported in a vertical direction by an elastic unit mounted in the mounting recess and configured to apply a pressure to the panel by the elastic unit,
wherein the elastic unit includes a plurality of gas springs of which pressure is adjusted by a pressure control device, and
wherein the pressure control device includes:
a controller mounted in an internal side of the upper die;
a plurality of pipes connected to the controller and to the plurality of gas springs; and
a sensing portion connected to the controller through the plurality of pipes, and configured to detect a gap between the upper forming surface and the lower forming surface.
2. The press mold of claim 1 , wherein a urethane pad of a preset thickness is formed on the upper forming surface to contact with the panel.
3. The press mold of claim 2 , wherein the preset thickness is set in a range of 5 mm to 15 mm.
4. The press mold of claim 2 , wherein the urethane pad is formed on the upper forming surface to preset thickness by 3D printing.
5. The press mold of claim 4 , wherein the urethane pad is bonded on the upper forming surface through a heat-resistant adhesive member that withstands a temperature range of 100° C. to 400° C.
6. The press mold of claim 2 , wherein a plurality of filling grooves is formed on the upper forming surface of the upper pad to form a surface roughness.
7. The press mold of claim 6 , wherein the plurality of filling grooves is filled with a urethane material.
8. The press mold of claim 6 , wherein the plurality of filling grooves is formed in a slot shape and arranged in parallel in a direction toward a center portion of the upper pad.
9. The press mold of claim 1 ,
wherein the upper pad is externally formed with a position regulation recess on a lateral side of the upper pad, and
wherein a side pin is mounted in an internal side of the upper die and detachably coupled with the position regulation recess to regulate a vertical position of the upper pad.
10. The press mold of claim 1 , wherein the upper steel is fitted to an outside of the lower steel, and formed with an external shape forming surface at an internal side to form an external shape of the panel.
11. The press mold of claim 1 , wherein the upper steel is mounted on a stepped surface stepped downwardly from the mounting recess, and vertically movable along an external surface of the lower steel together with the upper die.
12. The press mold of claim 1 , wherein a damping member is mounted between the upper die and the lower die to prevent direct contact between the upper die and the lower die.
13. A press mold for forming a panel, the press mold comprising:
an upper die for vertically operating by an upper press, and having a mounting recess recessed upward at a lower surface central portion of the upper die;
a lower die disposed under the upper die;
an upper pad disposed in a center portion of the mounting recess, and formed with an upper forming surface at a lower surface edge portion of the upper pad;
a lower steel disposed under the upper pad, mounted on the lower die, and formed with a lower forming surface at an upper surface edge portion of the lower steel corresponding to the upper forming surface; and
an upper steel mounted on the upper die at a position exterior to the lower forming surface,
wherein the upper pad is externally formed with a position regulation recess on a lateral side of the upper pad, and
wherein a side pin is mounted in an internal side of the upper die and detachably coupled with the position regulation recess to regulate a vertical position of the upper pad.
14. A press mold for forming a panel, the press mold comprising:
an upper die for vertically operating by an upper press, and having a mounting recess recessed upward at a lower surface central portion of the upper die;
a lower die disposed under the upper die;
an upper pad disposed in a center portion of the mounting recess, and formed with an upper forming surface at a lower surface edge portion of the upper pad;
a lower steel disposed under the upper pad, mounted on the lower die, and formed with a lower forming surface at an upper surface edge portion of the lower steel corresponding to the upper forming surface; and
an upper steel mounted on the upper die at a position exterior to the lower forming surface,
wherein a damping member is mounted between the upper die and the lower die to prevent direct contact between the upper die and the lower die.
15. The press mold of claim 14 ,
wherein the upper pad is externally formed with a position regulation recess on a lateral side of the upper pad, and
wherein a side pin is mounted in an internal side of the upper die and detachably coupled with the position regulation recess to regulate a vertical position of the upper pad.