NZ799543B2

NZ799543B2 - Machine and method for producing uniaxial reinforced wire meshes

Info

Publication number: NZ799543B2
Application number: NZ799543A
Authority: NZ
Inventors: Franz Haussler; Alexander Stuflesser
Original assignee: Bam Ag; Progress Maschinen & Automation Ag
Filing date: 2021-08-30
Publication date: 2025-08-05

Abstract

reinforced concrete construction, steel bodies or bars are used to improve the static properties of concrete components, which absorb tensile forces and thus supplement the compressive strength of the concrete, so that the loadbearing capacity of the reinforced concrete components is improved. The present invention relates to a machine and a method for producing simply reinforced steel wire meshes, for uses with not predominantly static loading, reinforcement wires being fastened to supporting strips by means of individual wire tying. The machine for producing uniaxial reinforcing steel bar meshes, having a steel strip conveyor (1) for conveying a plurality of support strips (2) which are parallel to one another and spaced apart from one another, and a reinforcing bar conveyor (3), wherein the latter conveys individual reinforcing bars (4) in a crossing manner onto the plurality of support strips, forming crossing points (5), and preferably also positions them in a longitudinal - axial manner with respect thereto, and a plurality of connecting units (6) operatively arranged at each crossing point, wherein a connecting unit has a binding wire conveyer (7) feeding a binding wire (8) through a rotating unit (9), wherein the rotating unit is movable relative to the support strip and the crossing reinforcing bar and is arranged on a side of the plane defined by the support strip and the reinforcing bar, wherein the connecting unit further has a binding wire guide unit (10) which is arranged on the opposite side of the plane and which frictionally feeds out and holds a binding wire fed thereinto by the binding wire conveyer in a direction reverse to the infeed direction, wherein the rotating unit twists the two binding wire strands (11) located on a side of the plane together and cuts them to length, characterized in that the rotating unit and the binding wire guide unit are moved towards each other in a closing manner to form a wire loop connecting the support strip and the reinforcing bar in such a manner that the support strip and the reinforcing bar are pressed against each other.

Claims

PATENT CLAIMS

1. A machine for producing uniaxial reinforcing steel bar meshes, having a steel strip conveyor for conveying a plurality of support strips which are parallel to one another and spaced apart from one another, and a reinforcing bar conveyor, wherein the latter conveys individual reinforcing bars in a crossing manner onto the plurality of support strips, forming crossing points, and a plurality of connecting units operatively arranged at each crossing point, wherein a connecting unit has a binding wire conveyer feeding a binding wire through a rotating unit, wherein the rotating unit is movable relative to the support strip and the crossing reinforcing bar and is arranged on a side of the plane defined by the support strip and the reinforcing bar, wherein the connecting unit further has a binding wire guide unit which is arranged on the opposite side of the plane and which frictionally feeds out and holds a binding wire fed thereinto by the binding wire conveyer in a direction reverse to the infeed direction, wherein the rotating unit twists the two binding wire strands located on a side of the plane together and cuts them to length, wherein the rotating unit and the binding wire guide unit are moved towards each other in a closing manner to form a wire loop connecting the support strip and the reinforcing bar in such a manner that the support strip and the reinforcing bar are pressed against each other.

2. The machine according to claim 1, wherein the rotating unit comprises a cutoff device, in particular a knife.

3. The machine according to claim 1 or 2, wherein it bends a cut-to-length wire binding between the support strip and the crossing reinforcing bar, produced by the machine, from a predominantly orthogonal orientation to the plane to a predominantly parallel orientation to the plane.

4. The machine according to claims 1, 2 or 3, wherein the guides are openings and/or recesses.

5. The machine according to claim 4, wherein the openings are elongated holes.

6. A method for producing a uniaxial reinforcing bar mesh from a plurality of reinforcing bars which are parallel to each other and spaced apart from each other and are orthogonally oriented to and fastened to a plurality of support strips which are parallel to each other and spaced apart from each other, comprising the following steps: a) feeding a reinforcing bar orthogonally to the longitudinal axes of parallel support strips which are spaced apart from each other to create a plurality of crossing points between the support strips and reinforcing bar, b) pressing the reinforcing bar onto the support strip to hold it in close position, c) feeding a binding wire in the region of a crossing point around each support strip and the reinforcing bar thereby forming a double binding wire strand on one side, d) cutting the binding wire to length and twisting the two binding wire strands thus created to form a twisting section.

7. The method according to claim 6, wherein after step d), a step e) of bending the twisting section in or towards the plane defined by support strips and reinforcing bars is carried out.

8. The method according to claim 6 or 7, wherein step b) of pressing the reinforcing bar onto the support strip is carried out before, during, or after step c).

9. The method according to any one of claims 6 to 8, wherein step d) comprises bending the second free end of the binding wire created by cutting to length.

10. The method according to any one of claims 6 to 9, wherein a step f) of inserting guides into the support strip is carried out.

11. The method according to any one of claims 6 to 10, wherein an edge distance between two guides is selected depending on the diameter of the reinforcing steel bar to be connected, in particular that the edge distance is smaller than a diameter of the reinforcing steel bar to be fastened.

12. The method according to any one of claims 6 to 11, wherein it varies a length of the binding wire required for connection depending on the diameter of the reinforcing bar to be connected.

13. The machine according to claim 1, substantially as herein described with reference to any embodiment disclosed.

14. The method according to claim 6, substantially as herein described with reference to any embodiment disclosed.