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US 4,782,684 AGranted
Bending machine
AssigneeNone recorded
InventorRonald E. Benton
Life of this patent
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AssigneeNone recorded
InventorRonald E. Benton
Estimating the term…
A bending machine having a rotary bending head to which fluid pressure is transmitted via a fluid flow or fluid pressure transmission device comprising a fixed block and a rotary shaft mounted in relation to the fixed block so as to be rotatable relative thereto. The fixed block has at least one passageway through it extending to the rotary shaft, and the rotary shaft has at least one annular groove in registration with the fixed block passageway and at least one axially extending passageway in communication with the annular groove. As a result, the axial passageway is in communication with the fixed block passageway independently of the angular position of the rotary shaft relative to the fixed block.
A bending machine for bending elongate material, comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
Subject matter not provided for in other groups of this subclass
Bending rods, profiles, or tubes: over a stationary forming member; by use of a swinging forming member or abutment
Bending rods, profiles, or tubes: with program control
Bending wire other than coiling
Term ended 1 May 2007 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to a bending machine.
A problem arises when one part of a machine rotates relative to another, and fluid flow or pressure has to be transmitted from one of the parts to the other independently of their relative positioning or relative movement, especially (although not exclusively) when there is more than one flow or pressure that has to be transmitted.
The present invention seeks to overcome this problem.
An example of a machine which incorporates a device made in accordance with the present invention is illustrated in the accompanying drawings in which:
FIG. 1 is a perspective view of the machine from above and to one side thereof;
FIG. 2 is a side view of parts of a bending head of the machine;
FIG. 1 shows a bending machine for bending wire, tubing or other elongate material. It comprises a support structure 10 on which is mounted, in spacial sequence from right to left in that Figure, a straightener 12, a feed unit 14, a clamp 15, a bending head mounting wheel 16, a bending head mounting arm 18, a bending head 20, and a crop unit 22. In FIGS. 1 and 2, these units are all dimensioned and constructed for bending a wire 24. However, the units may be adjusted or replaced by parts which are suitable for bending other dimensions and forms of elongate material, such as tubing.
The straightener 12 comprises a first set of nine rollers 26 arranged in a first line of five rollers on one side of an axis of the machine on which the wire 24 lies, and a second line of four rollers on the other side of this axis. Adjuster means 28 are provided to enable the separation of the two lines of rollers to be adjusted so that all the rollers engage the wire 24. A second set of nine rollers 30 is also provided adjacent to the first set, also extending along the axis of the machine but having the plane in which the rollers lie at right angles to the plane in which the first set of rollers 26 lies.
The clamp 15 comprises two blocks 40 and 42 disposed adjacent to and on opposite sides of the machine axis. The two blocks are moveable towards and away from one another to clamp and release the wire 24 respectively.