Binding machine

Patent metadata

Field	Value
Publication number	US-11779997-B2
Application number	US-202017133258-A
Country	US
Kind code	B2
Filing date	Dec 23, 2020
Priority date	Jul 22, 2015
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

Abstract

A reinforcing bar binding machine includes a magazine in which two wires are housed in a drawable manner; a curl guide unit that winds the juxtaposed wires around the reinforcing bars and a wire feeding unit that winds the wires around the reinforcing bars with the curl guide unit in an operation of juxtaposing and feeding the wires so that the wires are wound around the reinforcing bars. In addition, the binding machine includes a binding unit that twists crossing portions of one end side and the other end side of each of the wires wound around the reinforcing bars. The binding unit further includes a bending portion that bends the one end side and the other end side of each of the wires, which are wound around the reinforcing bars, toward the reinforcing bars.

First claim

The invention claimed is:

1. A binding method comprising:
feeding a wire housed in a housing;
winding the fed wire in a loop around a binding object;
after forming the loop, feeding the wire in a reverse direction to tighten the loop about the binding object;
cutting the wire after feeding the wire in the reverse direction;
bending the wire such that end portions of the wire which bind the binding object are located closer to the binding object than a top portion of the wire which protrudes the most in a direction away from the binding object; and
twisting the wire after the wire is bent.

2. The binding method according to claim 1 , further comprising simultaneously feeding two wires in parallel, and wherein in forming the loop, the two wires in parallel are simultaneously wound about the binding object to form a single loop comprising the two wires; and
wherein the method further comprises guiding the two wires such that they are maintained in parallel with an axis of one wire of the two wires offset from an axis of a second wire of the two wires.

3. The binding method according to claim 2 , wherein after bending and twisting of the wire, the top portion is the vertically highest part of the wire and the end portions are vertically lower than the top portion.

4. The binding method according to claim 2 , wherein the feeding the wire in the reverse direction includes feeding the two wires in the reverse direction after forming the loop, the method further including cutting the wire after forming the loop and prior to the bending of the wire.

Assignees

• Max Co Ltd

Inventors

• Itagaki Osamu
• Kasahara Akira
• Nagaoka Takahiro

Classifications

• E04G21/123 Primary

  Wire twisting tools (bundling articles by twisting, e.g. wire B65B13/28; bundling rods, sticks, or like elongated objects with, e.g. wire B65B27/10; tying devices for hops, vines or trees with, e.g. wire A01G17/08) · CPC title

• B25B25/00 Primary

  Implements for fastening, connecting or tensioning of wire or strip · CPC title

• B21F15/06 Primary

  with additional connecting elements or material · CPC title

• B65B13/14

  Pairs of carriers or guides movable around opposite sides of the articles · CPC title

• B65B13/06

  Stationary ducts or channels · CPC title