US 4,662,204 AGranted

Apparatus for automatically bending metallic tubes

AssigneeUsui Kokusai Sangyo Kabushiki Kaisha

InventorShigeru Saegusa

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Abstract

An apparatus is provided for automatically bending tubular materials. The apparatus comprises a bending direction setter which is operative to securely grip a length of tubular material approximately centrally along the length of material. The bending direction setter is operative to rotate the tubular material about its original axis a preselected and carefully controlled amount. The bending apparatus further comprises a pair of automatic benders which are operative to engage the tubing at selected locations on opposed sides of the bending direction setter. The benders are operative to selectively engage the tubing material at a predetermined location therealong and to effect a controlled bend therein. The bending direction setter may rotate the tubular material about its original axis between successive bends carried out by the benders, thereby enabling the tubular material to be bent through three dimensions. The apparatus further comprises a takeout unit for removing the bent tubular product from the bend direction setter.

Claims6

Dependent claims

An apparatus for automatically bending a metallic tube, comprising:

feed means for sequentially feeding elongated tubes;
bending-direction setting means for clamping a tube fed from said feed means substantially centrally along the length of said tube, and for rotating the tube around the longitudinal axis of the gripped portion thereof, said bending direction setting means including a link assembly having a plurality of support members, a pair of parallel beams hinged loosely to each of said support members and a clamp pivotably connected to said support members for gripping the tube, said link assembly defining a plane disposed substantially at a right angle to the portion of the tube clamped by said bending direction setting means, said parallel beams each being pivotably mounted about hinge points disposed at respective locations thereon spaced from said support members for rotation within the plane of said link assembly;
means connected to at least one hinge point for rotating one of said parallel beams;
a pair of automatic bending means for bending the tube preselected amounts, said bending means being disposed on opposite sides of said bending direction setting means and being movable relative thereto;
and
removal means for removing a bent tube from said bending direction setting means, said removal means being selectively movable with respect to said bending direction setting means.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/818,620Filed 13 Jan 1986
Priority: JP 60-659117 Jan 1985
Granted: 5 May 1987
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B21D 43/006
Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or…:…
B21D 7/022
Over a stationary forming member; by use of a swinging forming member or abutment: over a stationary forming member only
Y10S 414/13
Material or article handling: handlers utilizing parallel links
B21D
Working or processing of sheet metal or metal tubes, rods or profiles