SHEET METAL REPAIR JIG

• US 20120272705A1
• Filed: 04/26/2012
• Published: 11/01/2012
• Est. Priority Date: 04/28/2011
• Status: Abandoned Application

• Current Assignee: Hirane Co., Ltd.
• Original Assignee: Hirane Co., Ltd.
• Inventors: Hirane, Akio
• Application Number:
  US13/456,494
• Publication Number:
  US 20120272705A1
• Time in Patent Office: Days
• US Class Current: 72/200
• CPC Class Codes: B21D 1/06 Removing local distortions

Abstract

A sheet metal repair jig for smoothening a sheet metal by heating and cooling a part of the sheet metal to be repaired includes at least one roller having a cylindrical shape, the roller being made of an electrically-conductive material and serving as a heating means; a roller support shaft supporting the roller pivotably about an axis of rotation of the cylindrical shape; a support supporting the roller support shaft and having an electrode electrically connected to the roller; and a cooling channel serving as an air channel for discharging cooling air to a contact surface between the part of the sheet metal to be repaired and the roller. The cooling channel is formed inside the roller support shaft and has a discharge port that discharges the cooling air to the contact surface between the part of the sheet metal to be repaired and the roller.

Claims

1. A sheet metal repair jig for smoothening a sheet metal by heating and cooling a part of the sheet metal to be repaired, comprising:

at least one roller having a cylindrical shape, the roller being made of an electrically-conductive material and serving as a heating means;

a roller support shaft supporting the roller pivotably about an axis of rotation of the cylindrical shape;

a support supporting the roller support shaft and having an electrode electrically connected to the roller; and

a cooling channel serving as an air channel for discharging cooling air to a contact surface between the part of the sheet metal to be repaired and the roller,

wherein the cooling channel is formed inside the roller support shaft and has a discharge port that discharges the cooling air to the contact surface between the part of the sheet metal to be repaired and the roller.

2. The sheet metal repair jig according to claim 1, wherein the sheet metal repair jig includes a plurality of rollers arranged along the axis of rotation, and the discharge port is formed in a gap between the plurality of rollers.

3. The sheet metal repair jig according to claim 2, wherein the sheet metal repair jig includes two rollers of the same size and shape arranged along the axis of rotation, and the discharge port is formed in a gap between the two rollers.