Claims
- 1. Method of bending a frame from a frame material comprising the steps of feeding an elongated section of the frame material having a leading end to a bending station and moving the frame material into the bending station along a straight horizontal feed track, providing weakened areas at spaced positions along the length of the frame material with the spacing between the weakened areas corresponding to the lengths of the sides of the frame to be formed, feeding the leading end of the frame material into a drive head so that the leading end is received in the drive head and providing a driving member for the drive head, moving the driving member and with it the drive head and the leading end of the frame material along a vertical path of motion relative to the feed track, rotatably supporting the drive head on the driving member about an axis perpendicular to the feed track and to the path of motion of the frame material in the bending station, moving the driving member along the path of motion initially away from the feed track and then toward the feed track while the drive head moves the leading end of the frame material along with the driving member, with the drive head being rotatable relative to the driving member and at the same time moving the following frame material along the feed track in the feed direction and bending the frame material at the weakened areas while holding the frame material on the feed track so that the adjacent section of the frame material moving upwardly from the feed track and separated by a weakened area moves angularly toward the frame material remaining on the feed track for forming the frame.
- 2. Method of bending a frame from a frame material comprising the steps of feeding a length of the frame material having a leading end to a bending station and moving the frame material along a horizontal feed track, providing weakened areas at spaced positions along the length of the frame material with the spacing between the weakened areas corresponding to the length of the sides of the frame to be formed, feeding the leading end of the frame material into a drive head so that the leading end is received in the drive head and providing a driving member for the drive head, moving the driving member and the drive head and with it the leading end of the frame material along a vertical path of motion relative to the feed track such that the leading end and drive head are initially moved away from the feed track, rotatably supporting the drive head about an axis perpendicular to the feed track and to the path of motion of the frame material in the bending station, continuing moving the driving member along the path of motion vertically upwardly from the feed track with the leading end of the frame material held in the drive head which rotates relative to the driving member, and at the same time moving the frame material along the feed track in the feed direction and bending the section of the frame material extending between the leading end and the first weakened area relative to the following frame material on the feed track and holding the following frame material on the feed track and forming a first bend of the frame, continuing moving the driving member away from the feed track along the vertical path of motion with the leading end of the frame material held in the drive head and bending the second section of the frame material located between the first and second weakened areas relative to the following frame material secured on the frame track and angularly displacing the second section relative to the following frame material and forming a second bend of the frame at the second weakened area, moving the driving member along the path of motion closer to the feed track while the leading end of the frame material is held by the drive head which is rotatable relative to the driving member and continuing moving the following frame material along the feed track and holding the third weakened area on the feed track and maintaining the bending angle at the first weakened area and continuing the bending at the second weakened area, continuing moving the driving member along the path of motion almost back to the feed track while moving the leading end of the frame material in the drive head which rotates relative to the driving member, continuing moving the frame material along the feed track and retaining the third weakened area on the feed track while maintaining the bending angle at the first and second weakened areas and then bending the frame section extending between the second and third weakened areas relative to the fourth frame material section following the third weakened area and forming a third bend of the frame at the third weakened area.
- 3. Method, as set forth in claim 1 or 2, including the step of bending the frame material along lines extending in the feed direction of the frame material into a hollow section before the frame material enters the bending station.
- 4. Method, as set forth in claim 1 or 2, including the step of forming the weakened areas in the frame material by making the miter cuts into the frame material before the frame material moves into the bending station.
- 5. Method, as set forth in claim 1 or 2, including holding the weakened areas formed in the frame material on the feed track by holding members and moving the holding members in the direction of the feed track.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2905841 |
Feb 1979 |
DEX |
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Parent Case Info
This is a division of application Ser. No. 120,919 filed Feb. 12, 1980, now U.S. Pat. No. 4,356,614.
US Referenced Citations (6)
Foreign Referenced Citations (5)
Number |
Date |
Country |
474313 |
Mar 1929 |
DE2 |
537904 |
Nov 1931 |
DE2 |
1288140 |
Feb 1962 |
FRX |
2263834 |
Oct 1975 |
FRX |
53-76963 |
Jul 1978 |
JPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
120919 |
Feb 1980 |
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