Binding machine

Patent metadata

Field	Value
Publication number	US-10787828-B2
Application number	US-201615577260-A
Country	US
Kind code	B2
Filing date	Jul 21, 2016
Priority date	Jul 22, 2015
Publication date	Sep 29, 2020
Grant date	Sep 29, 2020

Abstract

The reinforcing bar binding machine which is capable of surely wrapping and binding a wire to a binding object. The reinforcing bar binding machine includes a magazine in which two wires are housed so as to be drawable, a curl guide unit which winds the arranged wires around the reinforcing bar, by the operation of feeding the parallel wires at the curl guide unit to wind around the reinforcing bar, a wire feeding unit which feeds the wires so that they are wound around the reinforcing bar, and a binding unit which twists an intersecting portion between one end side and the other end side of the wires wound around the reinforcing bar.

First claim

The invention claimed is:

1. A binding machine comprising:
a housing that is configured to house a wire reel containing two or more wires;
a wire feeding unit that is configured to feed the two or more wires from the housing and wherein the wire feeding unit feeds the two or more wires in parallel with each other; wherein the two or more wires are movable relative to each other in directions orthogonal to a feeding direction;
a curl guide that is configured to wind the two or more wires fed from the wire feeding unit in a loop around a binding object; and
a binding unit that is configured to grip and twist the two or more wires wound around the binding object to bind the binding object.

2. The binding machine according to claim 1 , wherein the wire feeding unit includes a first feeding member and a second feeding member,
which feed the two or more wires with the two or more wires between the first feeding member and the second feeding member, and wherein the first and second feeding members respectively include first and second facing surfaces which face each other and form a pinching portion to pinch the two or more wires between the first and second facing surfaces, and
the first and second facing surfaces are displaceable in a wire feeding direction to feed the two or more wires pinched therebetween, and the pinching portion controls a direction of movement of the two or more wires in the directions orthogonal to the feeding direction while maintaining axes of the two or more wires parallel to each other and parallel to the feeding direction.

3. The binding machine according to claim 1 , further comprising:
a restricting unit that is positioned between the housing and the curl guide and that is configured to restrict a direction of movement of the two or more wires, and
wherein the restricting unit restricts the direction of movement of the two or more wires and is configured so as to arrange the two or more wires in parallel.

4. The binding machine according to claim 3 ,
wherein the restricting unit includes a wire introducing portion at an inlet side and through which the two or more wires enter the restricting unit, and a wire restricting portion which restricts the direction of movement of the two or more wires entering from the wire introducing portion, and
the wire introducing portion includes a larger opening than an opening of the wire restricting portion to facilitate entry of the two or more wires into the wire introducing portion.

5. The binding machine according to claim 4 ,
wherein the opening of the wire restricting portion is formed such that a length in a first direction orthogonal to the wire feeding direction is larger than a length in a second direction orthogonal to the wire feeding direction and orthogonal to the first direction.

6. The binding machine according to claim 5 ,
wherein the length in the first direction is larger than twice a diameter of one wire, and
the length in the second direction is larger than the diameter of one wire and is smaller than twice the diameter of one wire.

7. The binding machine according to claim 6 ,
wherein the length of the opening of the wire restricting portion in the second direction is smaller than 1.5 times the diameter of one wire.

8. The binding machine according to claim 5 ,
wherein in the opening of the wire restricting portion, the length in the first direction is at least 1.2 times the length in the second direction.

9. The binding machine according to claim 5 ,
wherein the opening of the wire restricting portion is configured such that an inclination of a line extending through axes of the two or more wires in the opening is 45 degrees or less with respect to the length of the opening extending in the first direction when the two or more wires is inserted therein.

10. The binding machine according to claim 9 ,
wherein the opening of the wire restricting portion is configured such that the inclination is 15 degrees or less.

11. The binding unit according to claim 5 , wherein the two or more wires are movable relative to each other, and the wire restricting portion restricts relative movement of the two or more wires such that the two or more wires are maintained in parallel with axes of the two or more wires parallel to each other.

12. The binding machine according to claim 3 ,
wherein the restricting unit is located between the housing and the wire feeding unit.

13. The binding machine according to claim 3 ,
wherein the restricting unit is located between the wire feeding unit and the curl guide.

14. The binding machine according to claim 13 , further comprising:
a cutting unit located between the wire feeding unit and the curl guide and configured to cut the wires wound around the binding object, and
wherein the restricting unit is located between the wire feeding unit and the cutting unit.

15. The binding machine according to claim 13 , further comprising:
a cutting unit located between the wire feeding unit and the curl guide and configured to cut the wires wound around the binding object,
wherein the restricting unit is located in or near the cutting unit.

16. The binding machine according to claim 13 , further comprising:
a cutting unit located between the wire feeding unit and the curl guide and configured to cut the wires wound around the binding object,
wherein the restricting unit is located between the cutting unit and the curl guide.

17. The binding machine according to claim 1 , further including:
a restricting unit positioned between the housing and the curl guide;
wherein the restricting unit is configured to restrict lateral movement of the at least two wires relative to each other in a direction orthogonal to a feed direction.

18. The binding unit according to claim 17 , wherein the restricting unit includes an opening having a first dimension in a first direction orthogonal to the feed direction and a second dimension orthogonal to both the first direction and the feed direction, and wherein the first dimension is at least twice a diameter of one wire and the second dimension is less than twice the diameter of one wire.

19. The binding machine according to claim 18 , wherein the wire feeding unit and the binding unit form a single loop of the two or more wires simultaneously wound around the binding object, and the wires of the single loop are gripped and twisted to bind the binding object.

20. The binding machine according to claim 19 , wherein the feeding unit reverses a feeding direction of the wire after forming of the single loop about the binding object to tighten the single loop of the at least two wires.

21. The binding machine according to claim 1 , wherein the wire feeding unit includes a first feeding member having a first groove thereon and a second feeding member having a second groove thereon, and wherein the wire feeding unit is configured to feed the two or more wires with a first wire of the two or more wires positioned in said first groove and a second wire of the two or more wires positioned in said second groove.

22. A binding machine comprising
a housing configured to house a wire reel containing two or more wires which are separate and movable relative to each other,
a wire feeding unit that is configured to feed the two or more wires from the housing in parallel with each other,
a curl guide that is configured to wind the two or more wires fed from the wire feeding unit in a loop around a binding object;
a binding uni

Assignees

• Max Co Ltd

Inventors

• Itagaki Osamu
• Morijiri Takeshi
• Sera Tatsunori
• CHIGIRA Takuya
• Takeuchi Kazuhisa
• Takeuchi Sadayoshi

Classifications

• B65H2701/362

  Tying wires, e.g. for tying concrete reinforcement rods · CPC title

• B65H75/14

  with two end flanges · CPC title

• B65H69/06

  by splicing {(grommets made by splicing D07B1/18, auxiliary apparatus for splicing ropes or cables D07B7/169)} · CPC title

• B65H55/005 Primary

  with two or more filaments wound in parallel on the bobbin · CPC title

• B65B27/10 Primary

  Bundling rods, sticks, or like elongated objects · CPC title