Automatic channel letter bending machine

  • US 5,881,591 A
  • Filed: 08/13/1996
  • Issued: 03/16/1999
  • Est. Priority Date: 08/13/1996
  • Status: Expired due to Term
First Claim
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1. A method of automatically bending channel letters from metal material, comprising the steps of:

  • inputting a desired configuration for a channel letter shape to be formed into a control computer;

    feeding the metal material under the control of the control computer along a feed path through a metal material bending machine that includes a notching station, a flanging station, a cutting station and a bending station that are arranged along the feed path for the metal material, with the notching station and the flanging station being located upstream of the bending station along the feed path;

    when a flange is desired based on the desired configuration for a channel letter shape for the attachment of a back of the channel letter,a) notching the metal material at lo cations on the metal material corresponding to the position of the flange and positions of bends at the notching station under the control of the control computer, andb) forming the flange on the bottom of the metal material at desired flange positions on the metal material at the flanging station under the control of the control computer;

    when a flange is not desired based on the desired configuration for a channel letter shape, feeding the metal material to the bending station without notching and flanging the metal material;

    bending the metal material at the positions of the bends into the desired configuration for a channel letter shape at the bending station under the control of the control computer; and

    cutting the metal material at the cutting station after said bending.

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