Brake system of wire reel in reinforcing bar binding machine

Patent metadata

Field	Value
Publication number	US-9132472-B2
Application number	US-201414276066-A
Country	US
Kind code	B2
Filing date	May 13, 2014
Priority date	May 19, 2008
Publication date	Sep 15, 2015
Grant date	Sep 15, 2015

Abstract

A reinforcing bar binding machine is provided with a feed device for feeding a wire from a wire reel rotatably mounted on a binding machine body, a braking device for braking a rotation of the wire reel, and a control device that starts a braking to the rotation of the wire reel by the braking device after the wire is fed to a predetermined amount by the feed device.

First claim

What is claimed is:

1. A braking mechanism of a reinforcing bar binding machine in which a wire is fed from a wire reel rotatably mounted on a binding machine body, the fed wire is wound around reinforcing bars, and the wound wire is twisted to bind the reinforcing bars, the braking mechanism comprising:
braking means engageable with an engaging portion of the wire reel;
driving means for driving the braking means after a wire is fed by a predetermined length from the wire reel;
a rotatable shaft, wherein one end of the shaft actuates the braking means and the other end of the shaft connects with the driving means through a connecting part, the shaft being rotated by the driving means and the connecting part;
a cover partitioning the driving means from the wire reel; and
an opening formed in the cover around the shaft.

2. The braking mechanism according to claim 1 , wherein the connecting part includes a link.

3. The braking mechanism according to claim 2 ,
wherein the shaft is arranged between the wire reel and feed means, and
wherein the link connecting the shaft and the driving means is extended and arranged to a side of a guide disposed in a binding machine body.

4. The braking mechanism according to claim 3 , wherein the driving means includes a solenoid.

5. The braking mechanism according to claim 1 , wherein the driving means is hermetically-sealed from the wire reel by the cover.

6. A braking mechanism of a reinforcing bar binding machine in which a wire is fed from a wire reel rotatably mounted on a binding machine body, the fed wire is wound around reinforcing bars, and the wound wire is twisted to bind the reinforcing bars, the braking mechanism comprising:
a stopper lever engageable with an engaging portion of the wire reel;
a solenoid that drives the stopper lever after a wire is fed by a predetermined length from the wire reel;
a shaft that is rotatable about an axis of the shaft, wherein one end of the shaft actuates the stopper lever and the other end of the shaft connects with the solenoid through a connecting part, the shaft being rotated by the solenoid and the connecting part;
a cover partitioning the solenoid from the wire reel; and
an opening formed in the cover around the shaft.

7. The braking mechanism according to claim 6 , wherein the solenoid is hermetically-sealed from the wire reel by the cover.

8. The braking mechanism according to claim 6 , wherein the connecting part includes a link.

9. The braking mechanism according to claim 8 ,
wherein the shaft is arranged between the wire reel and a feed motor, and
wherein the link connecting the shaft and the solenoid is extended and arranged to a side of a guide disposed in a binding machine body.

Assignees

• Max Co Ltd

Inventors

• Itagaki Osamu

Classifications

• B21F15/04 Primary

  without additional connecting elements or material, e.g. by twisting · CPC title

• E04G21/123

  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

• E04G21/122 Primary

  Machines for joining reinforcing bars · CPC title

• B65H59/04

  by devices acting on package or support · CPC title

• B65B13/22 Primary

  Means for controlling tension of binding means · CPC title