US1642657A - Corrugated-sheet-bending machine - Google Patents

Description

:tially' cylindricalformation to vthesheet'li ody thereofin theiaccompan-yinga drawings-in Patented Sept. 13, 1927.

nu-Ir an s;r:A,Te's j onnsrnn A.- ERICK, or MUNCiE', INDIANA, Asslenon ,ro ,Gnas'o'ocx Bnornnns M N AC I G OMPA EM NG N AN LA oaroaaai on D N coanuenrnn-sunarv Applicationfiled Maykl,

My invention relates to. improvements in sheet metalbending machines, andhas ,articulari reference to? amaohine for ben mg previously corru ated' sheetsof' metal.

One-ofthe objects of my; invention is to provide a machinewhicliwill bendwapreviously corrugated metal sheet ilong tud anlly: with the corrugations, to; impart intermed-iate of the-ends of:-;the;s.heet,:a vsubstituleaving the end portions substantially straight and" lying parallelwith: one anoth For; the: urpose'of' disclosing my nvention I have-illustfated one: embodim nt which 7 Fig. 1 is a side elevation partly in section, of a machine embodying my invention, and

Fig. 2 is a plan view thereof, partly in section.

In the embodiment illustrated I provide a base or backing member 1 which is adapted to extend substantially vertical from a support and is provided with a foot 2 by which it is secured in position on its support. The front face of this base 1 is adapted to re ceive and support a transversely corrugated bed die 3 which is preferably hollow on its rear face and is provided with inturned lugs 4 by which it may be bolted to the base 1. Extending through the bearing 5 on the front face of the base 1, which bearing is formed in a suitable box integrally formed with the base, is a shaft 6 the ends of which project beyond the top and bottom of the base 1. A U shaped yoke, the two legs 7 of which take over the ends of the shaft 6, carries a roller die 8 having its surface corrugated to co-operate with the corrugations in the bed die 3. This roller is mounted on a shaft 9 journaled in pillow blocks 10 slidably mounted in the legs 7 of the yoke and held in their adjusted position by means of set screws 11. Suitable collars 12 are secured to the opposite ends of the shafts to prevent lateral displacement of the shaftin the pillow blocks.

The side faces of the base 1 are corrugated and one has secured thereto a clamping plate 13 having its inner face corrugated to coincide with the corrugations of the side face of the base and this clamping plate 18 is held in clamped position by adjusting screws 14.

In operation the yoke and bending roll 8 BEHDINQ' j insomnia; I

1825; serialtNgr- 27,152;

are thrown to one: side as indicated in dotted lines iniFzig. 2; The previously corrugated sheet 1S. .tlien:.inserted in the clamp formed the-side face, of the base 1 :and the clamp- 'l 'g'im mbeili' 51.3. and if itspositiQn :has been determined; by the gage: member- 15 the Clamping plate =13nissetup until the plate is securely: clampedi in'i position; The roller-1.8 is! then: set byrthe: ad-justijng.--screws 11, up

against the plateVandthe: yoke: then swung u to: TQYQlVQrthe roller abouti the bed; die 3v,v a

suitable lever/handle 16on the yoke? being provided for] this purpose." As: the. roller revolves aboutvthe bed 1'die 3, rotating on its own fliXisaat'the same; time, the-corrugated i sheet; is: bent around the; bed; die: until the roller has swung past the center of the bed die and in a position on the opposite side corresponding. to the position shown in dotted lines in Fig. 2. The curvature in the corrugated plate is thus completed and while in the machine the straight ends of the plate are inclined past the parallel, or toward one another. When the plate is removed from the machine the tendency of the plate to spring back to its original form moves or straightens these sides out so that they lie substantially parallel.

To accommodate the roll 8 when it is swung into the position in dotted lines, the

front face of the clamping plate 13 is corrugated as at 17 to coincide with thecorrugations in the bed die 3.

I I claim as my invention:

1. In a machine for bending corrugated 3.

rality of transversely extending corrugations adapted to receive the corrugations of the sheet to be bent, a clamp for securing the sheet to be bent against one of the fiat faces of the bed and adapted to hold the sheet against longitudinal movement and a roller having a series of parallel corrugations formed in its face to coincide with the corrugations formed in the bed and mounted to roll on the face of said bed beginning at a oint on one of the side faces and ending 2. In a machine for bending corrugated sheets of metal, the combination With a sheet receiving bed substantially U shaped in cross section and of the same cross sectional dimension from end to end, the legs of the U being drawn inwardly at their extremities and forming substantially flat sides, the face of said bed having formed therein a plurality of transversely extending corrugations adapted to receive the corrugations of the sheet to be bent, a clamp for securing the sheet to be bent against one of the flat faces of the bed and adapted to hold the sheet against longitudinal movement, a roller having a series of parallel corrugations formed in its face to coincide with the corrugations formed in the bed and mounted to roll on the face of said bed beginning at a point on one of the side faces and ending at a point on the opposite sideface and beyond the bight in the U, andmeans'for unyieldingly advancing the roller toward the "bed;

3. In a machine for'ben'ding corrugated sheets of metal, the combination with a sheet receiving bed substantially U shaped in cross section and of the same cross sectional dimension from end to end, thelegs of the U being drawn inwardly at their extremities and forming substantially flat sides, the face of said bed having formed therein a plurality of transversely extending corruga-r tions adapted to receive the corrugations of the sheet to be bent, a clamp for securing the sheet to be bent against one of the flat faces ofthe bed and adapted to hold the sheet against longitudinal movement, a yoke pivoted onthe axis of the bight of said U, a

roller mountedin said yoke and having a thousand nine hundred and twenty five.

CHESTER A. ERICK.

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