WO2009118143A4

WO2009118143A4 - Bending method and machine for metal rods and/or bars

Info

Publication number: WO2009118143A4
Application number: PCT/EP2009/002125
Authority: WO
Inventors: Ugo Milocco; Giovanni Fratti
Original assignee: N.G.F. Inzeniering D.O.O.
Priority date: 2008-03-25
Filing date: 2009-03-23
Publication date: 2010-02-04
Also published as: WO2009118143A3; ITUD20080063A1; EP2262596A2; WO2009118143A2

Abstract

The present invention relates to a bending method for metal rods and/or bars, starting from rods (15) or bars previously straightened in a rectilinear manner by appropriate means and fed in the form of segments and/or originating from coils of continuous wire, wherein the devices suitable for performing all the steps for gripping (12, 18), bending (10, 11, 19), cutting (14) and expulsion (13, 17) of the finished product (16) are mounted on a single carriage (9), which can slide on parallel guides (4), and are actuated and managed, in coordination and cooperation with each other, by automatic computerization systems. The present invention also relates to a machine for bending metallic bars and/or rods, wherein the machine includes means for gripping (12, 18), means for bending (10, 11, 19), means for cutting (14) and means for expulsion (13, 17) of the finished product (16), said means (12, 18; 10, 11 19; 14; 13, 17) being mounted on a single carriage (9), which can slide on parallel guides (4), and said means (12, 18; 10, 11 19; 14; 13, 17) being actuated and managed, in coordination and cooperation with each other, by automatic computerization systems.

Claims

AMENDED CLAIMS received by the International Bureau on 12 October 2009 (12.10.09)

1. An automatic machine for bending metallic bars and/or rods that originate from suitable feeder means in rectilinear segments or from rods obtained from the straightening of coils, wherein the machine includes means for gripping (12, 18), means for bending (10, 11, 19), means for cutting (14) and means for expulsion (13, 17) of the finished product (16), said means (12, 18; 10, 11 19; 14; 13, 17) being mounted on a single carriage (9), which can slide on parallel guides (4), and said means (12, 18; 10, 11 19; 14; 13, 17) being actuated and managed, in coordination and cooperation with each other, by automatic computerization systems.

2. The bending machine according to claim 1, wherein said single carriage (9) can slide on said parallel guides (4) in a longitudinal direction in a manner similar to the direction of origin of a rod (15) and wherein said being machine is provided on a working plane with: said means for gripping (12, 18), said means for gripping (12, 18) including a grip clamp or vise (12, 18) with automatic opening and closing, which has at least one end edge of the jaws whose shape is radiused to act as a fixed bending surface; said means for bending (10, 11, 19), said means for bending (10, 11, 19) including a bending finger (10), which is pivoted at an axis (11) and is actuated by means of a lower lever (19) and is capable of performing an angular rotation from 0° to more than 120° in a clockwise or counter clockwise manner; said means for cutting (14), said means for cutting (14) including a cutting assembly with mutually opposite blades (14); and said means for expulsion (13, 17), said means for expulsion (13, 17) including an automatic assembly for expelling the previously cut rod.

3. The bending machine according to claim 2, wherein in an opposite position with respect to the radiused edge of the vise (12, 18), acting as a fixed bending surface, there is said bending finger (10), which is pivoted on said axis (11) and is fixed or adjustable with respect to said fixed bending surface and is jointly connected to the underlying lower lever (19) and is capable of performing angular rotations from 0° to more than 120° on the rod (15), clockwise and/or counter clockwise with suitable technical modifications.

4. The bending machine according to claims 2 and 3, wherein the radiused edge of the vise (12, 18) and the pivoting axis (11) of the bending finger (10) are perpendicular to the working plane.

5. The bending machine according to claims 2-4, wherein the grip clamp has a side that is contoured with an acute angle and is contiguous to the radiused edge that acts as said fixed bending surface and abutment.

6. The bending machine according to claims 2-5, having a sectional contour that is shaped like a semicircle or circular arc or another contour suitable for the purpose in order to facilitate the sliding of the rod both (15) on the bending finger (10) and on both jaws of the vise (12, 18), the movable one (12) and the fixed one (18), and/or only in one of the two.

7. The bending machine according to claims 2-6, wherein the vise (12, 18) has, on the side that is perpendicular to the jaws and lies opposite the contoured side, a device for ejecting the rod (15) from the jaws with a fulcrum at a pivoting axis (17) of a rocker lever (13) or another equivalent means suitable for the purpose.

8. The bending machine according to claims 2-7, wherein proximate to the vise (12, 18), at right angles to the feed direction of the rod (15) and on the same origin side, there is the cutting assembly with mutually opposite blades (14).

9. A bending method for metal rods and/or bars, starting from rods (15) or bars previously straightened in a rectilinear manner by appropriate means and fed in the form of segments and/or originating from coils of continuous wire, wherein the devices suitable for performing all the steps for gripping (12, 18), bending (10, 11, 19), cutting (14) and expulsion (13, 17) of the finished product (16) are mounted on a single carriage (9), which can slide on parallel guides (4), and are actuated and managed, in coordination and cooperation with each other, by automatic computerization systems.

10. The method according to claim 9, wherein the step of gripping is performed with a grip clamp or vise (12, 18), and wherein during the movement of the carriage (9) along the sliding guides (4), with the grip clamp or vise (12, 18) in the closed position in the presence of a clamped rod (15), it is possible to perform the simultaneous bending, through the desired angle, of said rod (15).

11. The method according to claims 9 and 10, wherein the step of gripping is performed with a grip clamp or vise (12, 18), wherein the step of bending is performed with an angular bending finger or pin (10, 11, 19), wherein the step of cutting is performed with an automatic cutting assembly (14), and wherein the movable carriage (9) that can slide on guides is provided with said grip clamp or vise (12, 18), with said angular bending finger or pin (10, 11, 19), and with said automatic cutting assembly (14).