| 主权项 |
1. An assembly of dies for producing W-shaped flanges of a heat-insulating protective component comprising a terrace-forming die and a bending die, wherein the terrace-forming die comprises an upper mould (D10), an upper mould left cutting edge (D11), an upper mould right cutting edge (D15), first to sixth upper mould inner terrace sides (D12, D13, D14, D16, D17 and D18), a lower mould (D20), a lower mould left cutting edge (D21), a lower mould right cutting edge (D25) and first to sixth lower mould inner terrace sides (D22, D23, D24, D26, D27 and D28); when the terrace-forming die reaches a closed position, gaps exist between the upper mould left cutting edge (D11) and the lower mould left cutting edge (D21) and between the lower mould right cutting edge (D15) and the lower mould right cutting edge (D25) respectively; also when the terrace-forming die reaches a closed position, a space formed between the first to sixth upper mould inner terrace sides and the corresponding first to sixth lower mould inner terrace sides is wider than thickness of materials being fed;
the bending die comprises a bending die upper mould (D30) and a bending die lower mould (D40), wherein the bending die upper mould (D30) comprises a left side surface (D32) and a right side surface (D34) both perpendicular to a bottom surface (D35) of the bending die upper mould (D30), and also comprises a left arc surface (D31) and a right arc surface (D33) joined to the left side surface (D32) and the right side surface (D34) respectively; the left arc surface and the right arc surface are arced surfaces oriented towards two corresponding outer sides of the bending die upper mould. |
