JP2024094235A - Binding machine - Google Patents

Abstract

A rebar binding machine is provided that stabilizes the position of a wire in a magazine in a direction intersecting the direction in which the wire is fed.
[Solution] The rebar binding machine 1A comprises a magazine 2A that contains a reel 20 wound with wire W, a wire feed unit 3A that feeds the wire W, a curl forming unit 5A that forms a circular feed path Ru that winds the wire W fed by the wire feed unit 3A around the rebar S, and a binding unit 7A that twists the wire wound around the rebar S. The magazine 2A comprises a feed path forming unit 21d that forms the feed path for the wire W, and a regulating unit 25 that regulates the wire W from moving in a second direction that is a direction intersecting the direction in which the wire W is fed in the feed path forming unit 21d and along the axial direction of the annular feed path Ru, which is the opposite direction to the first direction in which the reel 20 is offset.
[Selected Figure] Figure 1A

Description

This relates to a bundling machine that uses wire to bind reinforcing bars and other objects.

Reinforcing bars are used in concrete structures to increase their strength, and are tied together with wire to prevent them from shifting from their designated position when the concrete is poured.

Therefore, a bundling machine called a rebar bundling machine has been proposed, which includes a wire feed section having a cylindrical hub around which the wire is wound and capable of feeding the wire from a reel rotatably supported in a magazine, and a curl arm that plastically deforms the wire fed from the wire feed section so that it traces an arc-shaped trajectory, and which wraps the wire plastically deformed by the curl arm around the rebar and then twists it to bind the rebar (see, for example, Patent Document 1).

Japanese Patent No. 6566310

When the diameter of the rebar to be bound increases, it is necessary to increase the diameter of the wire feed path that is wound in a ring shape around the rebar. However, when the diameter of the ring-shaped wire feed path increases, the position of the wire along the axial direction of the ring-shaped feed path varies within the wire feed path sent out from the curl arm by the wire feed section.

This variation increases when the position of the wire in the magazine becomes misaligned in the direction that crosses the direction in which the wire is fed. If this variation increases, there is a possibility that the tip of the wire fed out of the curl arm will not enter the guide located below the curl arm.

The present invention was made to solve these problems, and aims to provide a binding machine that stabilizes the position of the wire in the magazine in a direction that crosses the direction in which the wire is fed.

In order to solve the above-mentioned problems, the present invention provides a bundling machine that includes a magazine that stores wire, a wire feed section that feeds the wire stored in the magazine, a curl forming section that forms a circular feed path that winds the wire fed by the wire feed section around the object to be bound, and a bundling section that twists the wire wrapped around the object to be bound, the curl forming section includes a curl guide that gives a curl to the wire fed by the wire feed section, and a guide guide that guides the wire curled by the curl guide to the bundling section, and the magazine includes a feed path forming section that forms the wire feed path, and a regulating section that regulates the movement of the wire in a direction that intersects with the direction in which the wire is fed in the feed path forming section and is along the axial direction of the circular feed path.

In the present invention, the movement of the wire is restricted in a direction that intersects with the direction in which the wire is fed in the feed path forming section and is aligned with the axial direction of the annular feed path.

In the present invention, the movement of the wire in a direction that intersects with the direction in which the wire is fed in the feed path forming section and is along the axial direction of the annular feed path is restricted, so that the position of the wire along the axial direction of the annular feed path within the magazine is stabilized. This allows the wire that has been curled by the curl guide to be fed from the curl guide into the induction guide.

1 is a side view showing an example of an internal configuration of a reinforcing bar binding machine according to a first embodiment; FIG. 1 is a front view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment; FIG. 1 is a front view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment; FIG. 2 is a side view illustrating an example of a magazine according to the first embodiment. This is a cross-sectional view of line AA in Figure 2A. 2B is a cross-sectional view taken along line BB of FIG. 2A. FIG. 2 is a perspective view illustrating an example of a magazine according to the first embodiment. FIG. 2 is a side view showing an example of a magazine according to the first embodiment with parts removed; FIG. 2 is a perspective view showing an example of a magazine according to the first embodiment with parts removed; FIG. 2 is a perspective view showing an example of a magazine according to the first embodiment with parts removed; FIG. 4 is a cross-sectional plan view showing an example of a binding section and a driving section. FIG. 4 is a cross-sectional plan view showing an example of a binding section and a driving section. 4 is a cross-sectional side view of a main portion showing an example of the operation of the reinforcing bar binding machine of the first embodiment. FIG. 4 is a cross-sectional side view of a main portion showing an example of the operation of the reinforcing bar binding machine of the first embodiment. FIG. 4 is a cross-sectional side view of a main portion showing an example of the operation of the reinforcing bar binding machine of the first embodiment. FIG. 4 is a cross-sectional side view of a main portion showing an example of the operation of the reinforcing bar binding machine of the first embodiment. FIG. 4 is a cross-sectional side view of a main portion showing an example of the operation of the reinforcing bar binding machine of the first embodiment. FIG. 4 is a cross-sectional side view of a main portion showing an example of the operation of the reinforcing bar binding machine of the first embodiment. FIG. 4 is a cross-sectional side view of a main portion showing an example of the operation of the reinforcing bar binding machine of the first embodiment. FIG. 4 is a cross-sectional side view of a main portion showing an example of the operation of the reinforcing bar binding machine of the first embodiment. FIG. FIG. 11 is a side view illustrating an example of a magazine according to a second embodiment. This is a cross-sectional view taken along line B1-B1 of FIG. 6A. This is a cross-sectional view taken along line B2-B2 of FIG. 6A. FIG. 11 is a perspective view illustrating an example of a magazine according to a second embodiment. FIG. 11 is a side view illustrating another example of the magazine according to the second embodiment. This is a cross-sectional view taken along line B3-B3 in FIG. 7A. This is a cross-sectional view taken along line B4-B4 in FIG. 7A. FIG. 11 is a perspective view illustrating an example of a rotating member of a magazine according to a second embodiment. FIG. 11 is a perspective view illustrating an example of a rotating member of a magazine according to a second embodiment. FIG. 11 is a perspective view illustrating an example of a rotating member of a magazine according to a second embodiment. FIG. 11 is a perspective view illustrating an example of a rotating member of a magazine according to a second embodiment. FIG. 13 is a side view illustrating an example of a magazine according to a third embodiment. This is a cross-sectional view taken along line B5-B5 in Figure 9A. This is a cross-sectional view taken along line B6-B6 in Figure 9A. This is a cross-sectional perspective view taken along line B7-B7 in Figure 9A. FIG. 13 is a perspective view illustrating an example of a magazine according to a third embodiment. FIG. 13 is a cross-sectional view illustrating an example of a magazine according to a fourth embodiment. FIG. 13 is a perspective view illustrating an example of a magazine according to a fourth embodiment. FIG. 13 is a cross-sectional view illustrating an example of a magazine according to a fifth embodiment. FIG. 13 is a perspective view illustrating an example of a magazine according to a fifth embodiment. FIG. 23 is a side view illustrating an example of a magazine according to a sixth embodiment. This is a cross-sectional view taken along line B8-B8 in Figure 12A. This is a cross-sectional perspective view taken along line B9-B9 in Figure 12A. FIG. 23 is a perspective view illustrating an example of a magazine according to a sixth embodiment. FIG. 23 is a cross-sectional view illustrating an example of a magazine according to a seventh embodiment. FIG. 2 is a cross-sectional view showing an example of a rotating member. FIG. 2 is a cross-sectional view showing an example of a rotating member. FIG. 2 is a cross-sectional view showing an example of a rotating member. FIG. 23 is a cross-sectional view illustrating an example of a magazine according to an eighth embodiment. FIG. 23 is a perspective view illustrating an example of a magazine according to an eighth embodiment. FIG. 4 is a cross-sectional view showing an example of an adjustment unit. FIG. 4 is a cross-sectional view showing an example of an adjustment unit. FIG. 23 is a side view illustrating an example of a magazine according to a ninth embodiment. This is a cross-sectional view taken along line B10-B10 in Figure 15A. This is a cross-sectional perspective view taken along line B11-B11 in FIG. 15A.

Below, an example of a rebar binding machine as an embodiment of the binding machine of the present invention will be described with reference to the drawings.

<Configuration example of the reinforcing bar binding machine according to the first embodiment>
FIG. 1A is an internal configuration diagram viewed from the side showing an example of the overall configuration of a reinforcing bar tying machine of the first embodiment, FIG. 1B is an internal configuration diagram viewed from the front showing an example of the overall configuration of a reinforcing bar tying machine of the first embodiment, and FIG. 1C is a front view showing an example of the overall configuration of a reinforcing bar tying machine of the first embodiment.

The rebar tying machine 1A is handheld by an operator and includes a main body 10A and a handle 11A. The rebar tying machine 1A feeds the wire W in the forward direction indicated by the arrow F, winding it around the rebar S to be tied, and then feeds the wire W wound around the rebar S in the reverse direction indicated by the arrow R to wind it around the rebar S. The rebar tying machine 1A then twists the wire W and ties the rebar S with the wire W. The rebar tying machine 1A ties the rebar S with one wire W or multiple wires W, two wires W in this example.

To achieve the above-mentioned functions, the rebar tying machine 1A is equipped with a magazine 2A that stores the wire W, a wire feed section 3A that feeds two wires W aligned in the radial direction of the wire W, and a wire guide 4A that guides the two wires W fed to the wire feed section 3A. The rebar tying machine 1A also has a curl forming section 5A that forms a circular feed path that winds the two wires W fed by the wire feed section 3A around the rebar S, and a cutting section 6A that cuts the two wires W wound around the rebar S. The rebar tying machine 1A further includes a binding section 7A that twists the two wires W wound around the rebar S, and a drive section 8A that drives the binding section 7A.

The magazine 2A stores a reel 20 on which a long wire W is wound so that it can be unwound and can be rotated and detached. The wire W is made of a metal wire that can be plastically deformed, a metal wire coated with resin, or a twisted wire.

The reel 20 comprises a cylindrical hub portion 20a around which the wire W is wound, and a pair of flange portions 20b, 20c integrally provided on both axial ends of the hub portion 20a. The flange portions 20b, 20c are generally disk-shaped with a larger diameter than the hub portion 20a, and are provided concentrically with the hub portion 20a. The reel 20 has two wires W wound around the hub portion 20a, allowing two wires W to be pulled out from the reel 20 at the same time.

As shown in FIG. 1C, the rebar tying machine 1A is arranged with the magazine 2A offset in a first direction indicated by an arrow C1, which is one direction based on the curl guide 50a of the curl forming section 5A described later. As a result, as shown in FIG. 1B, the rebar tying machine 1A has the reel 20 attached in a state where it is offset in the first direction indicated by an arrow C1 along the axial direction of the reel 20, which is aligned with the axial direction of the hub section 20a, with respect to the feed path FL of the wire W defined by the wire feed section 3A, the wire guide 4A, etc.

The wire feed unit 3A is equipped with a pair of feed gears 30 (30L, 30R) that clamp and feed two parallel wires W. In the wire feed unit 3A, the rotational motion of the feed motor 31 is transmitted to one of the feed gears 30L. In addition, the gear parts on the outer periphery of the feed gears 30L and 30R mesh with each other, so that the rotational motion of one of the feed gears 30L is transmitted to the other feed gear 30R. As a result, one of the feed gears 30L is the driving side, and the other feed gear 30R is the driven side.

The wire feed unit 3A aligns the two wires W in the direction in which the pair of feed gears 30L, 30R are aligned. In the wire feed unit 3A, one wire W contacts the groove of one feed gear 30L, and the other wire W contacts the groove of the other feed gear 30R, so that the one wire W and the other wire W contact each other. As a result, the wire feed unit 3A feeds the two wires W held between the pair of feed gears 30 (30L, 30R) in the extension direction of the wires W by the frictional force generated between one feed gear 30L and one wire W, the frictional force generated between the other feed gear 30R and the other wire W, and the frictional force generated between the two wires W as the pair of feed gears 30 (30L, 30R) rotates.

In addition, the wire feed unit 3A switches the rotation direction of the feed motor 31 between forward and reverse, thereby switching the rotation direction of the feed gear 30 and switching the forward and reverse feed direction of the wire W.

The wire guide 4A is disposed upstream and downstream of the feed gear 30 with respect to the feed direction of the wire W, which is fed in the forward direction. The wire guide 4A guides the two entering wires W between the pair of feed gears 30, aligning them in the direction in which the pair of feed gears 30 are aligned.

The wire guide 4A is configured so that the opening on the upstream side with respect to the feed direction of the wire W fed in the forward direction has a larger opening area than the opening on the downstream side, and part or all of the inner surface of the opening is tapered. This makes it easy to insert the wire W pulled out from the reel 20 stored in the magazine 2A into the wire guide 4A.

The curl forming unit 5A is equipped with a curl guide 50a that curls the two wires W fed by the wire feed unit 3A and regulates the parallel orientation of the two wires W, and an induction guide 50b that guides the two wires W curled by the curl guide 50a to the bundling unit 7A. The curl forming unit 5A curls the two wires W fed by the wire feed unit 3A and passing through the curl guide 50a, forming a circular feed path Ru as shown by the two-dot chain line in FIG. 1, which passes from the curl guide 50a through the induction guide 50b and reaches the bundling unit 7A.

The cutting unit 6A includes a fixed blade unit 60, a movable blade unit 61 that cuts the wire W in cooperation with the fixed blade unit 60, and a transmission mechanism 62 that transmits the operation of the binding unit 7A to the movable blade unit 61. The cutting unit 6A cuts the wire W by rotating the movable blade unit 61 around the fixed blade unit 60 as a fulcrum axis.

The bundling unit 7A includes a wire locking body 70 to which the wire W is locked, and a sleeve 71 that operates the wire locking body 70. The driving unit 8A includes a motor 80 and a reducer 81 that reduces speed and amplifies torque.

The reinforcing bar tying machine 1A is provided with a wire abutting section 90 where the tip of the wire W abuts at the end of the feed path of the wire W that passes through the annular feed path Ru and is locked by the wire locking body 70. In addition, the reinforcing bar tying machine 1A is provided with the curl guide 50a and the induction guide 50b of the curl forming section 5A described above at the front end of the main body section 10A. Furthermore, the reinforcing bar tying machine 1A is provided with a reinforcing bar abutting section 91 where the reinforcing bar S abuts, between the curl guide 50a and the induction guide 50b at the front end of the main body section 10A.

The rebar tying machine 1A has a handle section 11A that extends downward from the main body section 10A. Furthermore, a battery 15A is removably attached to the lower part of the handle section 11A. The rebar tying machine 1A also has a magazine 2A provided in front of the handle section 11A. The rebar tying machine 1A has the above-mentioned wire feed section 3A, cutting section 6A, tying section 7A, drive section 8A that drives tying section 7A, etc. stored in the main body section 10A.

The rebar tying machine 1A has a trigger 12A provided in front of the handle portion 11A, and a switch 13A provided inside the handle portion 11A. In the rebar tying machine 1A, the control unit 100A controls the feed motor 31 and the motor 80 according to the state of the switch 13A pressed by operating the trigger 12A.

<Example of main configuration of the reinforcing bar binding machine according to the present embodiment>
- Example of magazine configuration Fig. 2A is a side view showing an example of a magazine according to the first embodiment, Fig. 2B is a cross-sectional view taken along line A-A in Fig. 2A, Fig. 2C is a cross-sectional view taken along line B-B in Fig. 2A, and Fig. 2D is a perspective view showing an example of a magazine according to the first embodiment. Furthermore, Fig. 3A is a side view showing an example of a magazine according to the first embodiment with parts removed, and Figs. 3B and 3C are perspective views showing an example of a magazine according to the first embodiment with parts removed.

The magazine 2A of the first embodiment has an axle portion 21f that supports the reel 20 rotatably relative to the magazine 2A. The magazine 2A has a side wall portion 21a on one side along the axis of rotation of the reel 20 defined by the axle portion 21f. The side wall portion 21a closes the side of the magazine 2A in the second direction indicated by the arrow C2, which is the opposite direction to the first direction in which the reel 20 is offset. The magazine 2A also has a peripheral wall portion 21b that stands upright from the side wall portion 21a along the circumferential direction of the rotation of the reel 20.

The magazine 2A further includes a lid 22 that opens and closes the other side along the axis of rotation of the reel 20. The lid 22 is provided on the side of the magazine 2A in the first direction to which the reel 20 is offset, and opens and closes the opening of the magazine 2A by rotating about a hinge 22a provided on the peripheral wall 21b. The reel 20 can be attached and detached from the magazine 2A by opening the lid 22.

The magazine 2A has a space formed by the side wall portion 21a, the peripheral wall portion 21b, and the lid portion 22 in the closed state, large enough for the reel 20 to rotate.

The magazine 2A also has a wire W outlet 21c on the side connected to the wire feed section 3A. The magazine 2A also has a feed path forming section 21d that forms a feed path for the wire W pulled out from the reel 20 on the opposite side of the outlet 21c across the storage position 21e of the reel 20. The feed path forming section 21d is formed by the space between the reel 20 and the peripheral wall section 21b.

The magazine 2A has a 2323 in the feed path forming portion 21d. 223 has a convex portion 23b that protrudes in a first direction indicated by an arrow C1 from the side wall portion 21a of the magazine 2A toward the feed path forming portion 21d. The convex portion 23b protrudes in the axial direction of the reel 20 along the peripheral wall portion 21b.

In the magazine 2A, the feed path forming section 21d located on the opposite side of the delivery port 21c is a range in which the wire W is likely to bend when the wire W is fed in the reverse direction indicated by the arrow R, and is a range in which the bent wire W is likely to be displaced in a direction approaching the wire W wound on the reel 20 when the wire W is then fed in the forward direction indicated by the arrow F. Therefore, the feed path forming section 21d is provided with a separation section 23. The separation section 23 separates the reel 20 contained in the magazine 2A from the wire W that has been bent in the feed path forming section 21d.

The separation section 23 is provided with a rotating member 24a on the upstream side of the convex portion 23b in the feed direction of the wire W indicated by the arrow F, and a rotating member 24b on the downstream side of the feed direction of the wire W indicated by the arrow F. The rotating members 24a and 24b are rotatably provided such that the rotation axis extends in a direction intersecting the feed direction of the wire W, and the wire W fed in the forward or reverse direction comes into contact with the outer circumferential surface.

The separation section 23 includes a pressing member 23a that rotatably supports the rotating members 24a and 24b. The pressing member 23a is attached to the portion of the convex section 23b opposite the side wall section 21a. One side of the rotating members 24a and 24b along the axial direction is rotatably supported by the side wall section 21a, and the other side along the axial direction is rotatably supported by the pressing member 23a. Note that the separation section 23 may have markings on the pressing member 23a in a planar or three-dimensional manner to guide the loading path of the wire W.

The magazine 2A includes a restricting portion 25 that restricts the movement of the wire W in a second direction indicated by arrow C2 along the axial direction of the reel 20 and the axial direction of the annular feed path Ru, which is a direction intersecting the direction in which the wire W is fed in the feed path forming portion 21d. The restricting portion 25 is provided in the feed path forming portion 21d at a position corresponding to the position where the separating portion 23 is provided, and is configured as a convex portion that protrudes from the side wall portion 21a toward the feed path forming portion 21d in the first direction indicated by arrow C1. The restricting portion 25 is, for example, configured integrally with the side wall portion 21a.

The restricting portion 25 is provided between the rotating member 24a and the rotating member 24b, on the outside along the radial direction of the reel 20 with respect to the convex portion 23b. The restricting portion 25 may be integrally formed with the side wall portion 21a and the convex portion 23b. The restricting portion 25 includes the feed path of the wire W, which is defined by the wire W contacting at least one of the outer circumferential surfaces of the rotating member 24a and the rotating member 24b, and is provided on the outside along the radial direction of the reel 20, or on both the outside and the inside. The restricting portion 25 is configured such that the length along the circumferential direction of the reel 20 is shorter than the length between the rotating member 24a and the rotating member 24b, and protrudes from the side wall portion 21a along the circumferential wall portion 21b in the axial direction of the reel 20 between the rotating member 24a and the rotating member 24b. The restricting portion 25 protrudes from the side wall portion 21a to a height about half the axial length of the reel 20.

4A and 4B are cross-sectional plan views showing examples of the binding unit and the drive unit. Next, the configurations of the binding unit 7A and the drive unit 8A will be described with reference to each drawing.

The bundling part 7A includes a rotating shaft 72 that operates the wire locking body 70 and the sleeve 71. The rotating shaft 72 is connected to the reducer 81 via a connecting part 72b that is configured to rotate integrally with the reducer 81 and to be movable in the axial direction relative to the reducer 81. The connecting part 72b includes a spring 72c that biases the rotating shaft 72 backward, which is a direction toward the reducer 81, and regulates the position of the rotating shaft 72 along the axial direction. As a result, the rotating shaft 72 is configured to be movable forward, which is a direction away from the reducer 81, while receiving a force pushing it backward by the spring 72c. Therefore, when a force is applied to move the wire locking body 70 forward along the axial direction, the rotating shaft 72 can move forward while receiving a force pushing it backward by the spring 72c.

The wire locking body 70 has a center hook 70C that is connected to the rotating shaft 72, and a first side hook 70R and a second side hook 70L that open and close relative to the center hook 70C.

The center hook 70C is connected to the tip of the rotating shaft 72, which is one end of the rotating shaft 72 along the axial direction, via a structure that allows it to rotate relative to the rotating shaft 72 and move axially together with the rotating shaft 72.

The wire locking body 70 rotates about the shaft 71b, opening and closing the tip of the first side hook 70R in the direction of approaching and separating from the center hook 70C. The tip of the second side hook 70L also opens and closes in the direction of approaching and separating from the center hook 70C.

The sleeve 71 has a convex portion (not shown) that protrudes from the inner circumferential surface of the space into which the rotating shaft 72 is inserted, and this convex portion fits into a groove of a feed screw 72a formed along the axial direction on the outer periphery of the rotating shaft 72. The sleeve 71 is supported by a support member 76d so as to be rotatable and slidable in the axial direction. When the rotating shaft 72 rotates, the sleeve 71 moves in the direction along the axial direction of the rotating shaft 72 according to the rotation direction of the rotating shaft 72 due to the action of the convex portion (not shown) and the feed screw 72a of the rotating shaft 72. The sleeve 71 also rotates integrally with the rotating shaft 72.

The sleeve 71 has an opening/closing pin 71a that opens and closes the first side hook 70R and the second side hook 70L.

The opening/closing pin 71a is inserted into the opening/closing guide hole 73 provided in the first side hook 70R and the second side hook 70L. The opening/closing guide hole 73 extends along the movement direction of the sleeve 71 and has a shape that converts the linear movement of the opening/closing pin 71a, which moves in conjunction with the sleeve 71, into an opening/closing operation caused by the rotation of the first side hook 70R and the second side hook 70L about the axis 71b.

When the sleeve 71 of the wire locking body 70 moves downward as indicated by the arrow A2, the first side hook 70R and the second side hook 70L move in a direction away from the center hook 70C by rotating about the shaft 71b, depending on the trajectory of the opening/closing pin 71a and the shape of the opening/closing guide hole 73.

As a result, the first side hook 70R and the second side hook 70L open relative to the center hook 70C, and a feed path through which the wire W passes is formed between the first side hook 70R and the center hook 70C, and between the second side hook 70L and the center hook 70C.

When the first side hook 70R and the second side hook 70L are open relative to the center hook 70C, the wire W fed by the wire feed section 3A passes between the center hook 70C and the first side hook 70R. The wire W passing between the center hook 70C and the first side hook 70R is guided to the curl forming section 5A. The wire W is then curled by the curl guide 50a and guided to the bundling section 7A by the induction guide 50b, and passes between the center hook 70C and the second side hook 70L.

When the sleeve 71 of the wire locking body 70 moves upward as indicated by the arrow A1, the first side hook 70R and the second side hook 70L move in a direction approaching the center hook 70C by rotating about the axis 71b due to the trajectory of the opening/closing pin 71a and the shape of the opening/closing guide hole 73. This causes the first side hook 70R and the second side hook 70L to close against the center hook 70C.

When the first side hook 70R closes against the center hook 70C, the wire W sandwiched between the first side hook 70R and the center hook 70C is locked in a manner that allows it to move between the first side hook 70R and the center hook 70C. When the second side hook 70L closes against the center hook 70C, the wire W sandwiched between the second side hook 70L and the center hook 70C is locked in a manner that prevents it from slipping out from between the second side hook 70L and the center hook 70C.

The sleeve 71 has a bending section 71c1 that presses and bends one end of the wire W, i.e., the tip side, in a predetermined direction to form the wire W into a predetermined shape, and a bending section 71c2 that presses and bends the other end of the wire W, i.e., the terminal side, cut at the cutting section 6A, in a predetermined direction to form the wire W into a predetermined shape.

By moving upward as indicated by arrow A1, the sleeve 71 pushes the tip end of the wire W, which is engaged with the center hook 70C and the second side hook 70L, with the bending portion 71c1, bending it toward the rebar S. Also, by moving upward as indicated by arrow A1, the sleeve 71 pushes the end end of the wire W, which is engaged with the center hook 70C and the first side hook 70R and cut at the cutting portion 6A, with the bending portion 71c2, bending it toward the rebar S.

The bundling section 7A includes a rotation restriction section 74 that restricts the rotation of the wire locking body 70 and the sleeve 71 in conjunction with the rotational movement of the rotating shaft 72. In the bundling section 7A, the rotation restriction section 74 restricts the rotation of the sleeve 71 in conjunction with the rotation of the rotating shaft 72 depending on the position of the sleeve 71 along the axial direction of the rotating shaft 72, and the sleeve 71 moves in the directions of arrows A1 and A2 due to the rotational movement of the rotating shaft 72.

As a result, the sleeve 71 moves in the direction of arrow A1 without rotating, causing the first side hook 70R and the second side hook 70L to close relative to the center hook 70C and locking the wire W. Also, the sleeve 71 moves in the direction of arrow A2 without rotating, causing the first side hook 70R and the second side hook 70L to open relative to the center hook 70C and unlocking the wire W.

When the restriction on the rotation of the sleeve 71 by the rotation restriction part 74 is released, the binding part 7A rotates the sleeve 71 in conjunction with the rotation of the rotating shaft 72.

As a result, the first side hook 70R, the second side hook 70L, and the center hook 70C that are holding the wire W rotate, and the held wire W is twisted.

<Operation example of the reinforcing bar binding machine of the first embodiment>
5A, 5B, 5C, 5D, 5E, 5F, 5G, and 5H are cross-sectional views of the main part showing an example of the operation of the reinforcing bar binding machine of the first embodiment. FIG. 5A shows a state where the reinforcing bar S is placed in a position where it can be bound. FIG. 5B shows the operation of feeding the wire W in the forward direction and winding it around the reinforcing bar S. FIG. 5C shows the operation of locking the wire W wound around the reinforcing bar S. FIG. 5D shows the operation of feeding the wire W in the reverse direction and winding it around the reinforcing bar S. FIG. 5E shows the operation of cutting off the excess part of the wire W wound around the reinforcing bar S. FIG. 5F shows the operation of bending the wire W wound around the reinforcing bar S. FIG. 5G and FIG. 5H show the operation of twisting the wire W wound around the reinforcing bar S.

Next, with reference to each figure, we will explain the operation of binding reinforcing bars S with wire W using the reinforcing bar binding machine 1A of the first embodiment.

The rebar binding machine 1A is in a standby state in which two wires W are clamped between a pair of feed gears 30 (30L, 30R) and the tip of each wire W is positioned between the clamping position of the feed gears 30 (30L, 30R) and the fixed blade portion 60 of the cutting section 6A. In addition, in the standby state, the rebar binding machine 1A is in a standby state in which the wire retainer 70, which has the sleeve 71 and the first side hook 70R, the second side hook 70L, and the center hook 70C attached to the sleeve 71, moves in the rear direction indicated by the arrow A2, and as shown in FIG. 4A, the first side hook 70R opens relative to the center hook 70C, and the second side hook 70L opens relative to the center hook 70C.

As shown in FIG. 5A, the rebar S is placed between the curl guide 50a and the induction guide 50b of the curl forming section 5A, and when the trigger 12A is operated, the feed motor 31 is driven in the forward rotation direction, and as shown in FIG. 5B, the two wires W are fed in the forward direction indicated by the arrow F by the wire feed section 3A.

The two wires W fed in the forward direction by the wire feed section 3A are oriented in parallel along the axial direction of the circular feed path Ru by the wire guide 4A.

The two wires W fed in the forward direction pass between the center hook 70C and the first side hook 70R and are fed to the curl guide 50a of the curl forming section 5A. By passing through the curl guide 50a, the two wires W are given a curling tendency to be wound around the reinforcing bar S along the circular feed path Ru.

The two wires W, which are fed in the forward direction by the wire feed unit 3A and curled along the circular feed path Ru by the curl guide 50a, are guided by the induction guide 50b and further fed in the forward direction by the wire feed unit 3A, so that they are guided by the induction guide 50b between the center hook 70C and the second side hook 70L. The two wires W are then fed until their tips abut against the wire abutment portion 90. When the tips of the wires W are fed to a position where they abut against the wire abutment portion 90, the drive of the feed motor 31 is stopped.

After the forward feed of the wire W is stopped, the motor 80 is driven in the forward direction. In the operating range where the wire locking body 70 locks the wire W, the rotation of the sleeve 71 linked to the rotation of the rotating shaft 72 is restricted by the rotation restricting portion 74. As a result, as shown in FIG. 5C, the rotation of the motor 80 is converted into linear movement, and the sleeve 71 moves forward in the direction of the arrow A1.

When the sleeve 71 moves forward, the opening/closing pin 71a passes through the opening/closing guide hole 73. As a result, the first side hook 70R moves in a direction approaching the center hook 70C by rotating around the shaft 71b. When the first side hook 70R closes against the center hook 70C, the wire W sandwiched between the first side hook 70R and the center hook 70C is locked in a form that allows it to move between the first side hook 70R and the center hook 70C.

The second side hook 70L also moves toward the center hook 70C by rotating about the shaft 71b. When the second side hook 70L closes against the center hook 70C, the wire W sandwiched between the second side hook 70L and the center hook 70C is locked in a manner that prevents it from slipping out from between the second side hook 70L and the center hook 70C.

After the sleeve 71 is advanced to a position where the first side hook 70R and the second side hook 70L close to engage the wire W, the rotation of the motor 80 is temporarily stopped and the feed motor 31 is driven in the reverse direction.

As a result, the pair of feed gears 30 (30L, 30R) rotate in the opposite direction, and as shown in FIG. 5D, the two wires W clamped between the pair of feed gears 30 (30L, 30R) are fed in the opposite direction indicated by the arrows R. Because the tip ends of the two wires W are secured between the second side hook 70L and the center hook 70C in a manner that prevents them from slipping out, the wires W are wound around the reinforcing bar S by feeding them in the opposite direction.

After winding the wire W around the rebar S and stopping the reverse rotation of the feed motor 31, the motor 80 is driven in the forward direction to further move the sleeve 71 forward as indicated by the arrow A1. As shown in FIG. 5E, the forward movement of the sleeve 71 is transmitted to the cutting unit 6A by the transmission mechanism 62, causing the movable blade unit 61 to rotate, and the wire W, which is held by the first side hook 70R and the center hook 70C, is cut by the action of the fixed blade unit 60 and the movable blade unit 61.

By driving the motor 80 in the forward direction, the sleeve 71 moves forward as indicated by the arrow A1 to cut the two wires W, and at almost the same time, the bending portions 71c1 and 71c2 move in a direction approaching the rebar S. As a result, the tip sides of the two wires W engaged with the center hook 70C and the first side hook 70R are pressed toward the rebar S by the bending portion 71c1, and are bent toward the rebar S using the engagement position as a fulcrum. As the sleeve 71 moves further forward, the wires W engaged between the second side hook 70L and the center hook 70C are held in a state where they are sandwiched by the bending portion 71c1.

The end of the wire W, which is engaged with the center hook 70C and the first side hook 70R and cut at the cutting portion 6A, is pressed toward the rebar S by the bending portion 71c2 and bent toward the rebar S using the engagement position as a fulcrum. As the sleeve 71 moves further forward, the wire W engaged between the first side hook 70R and the center hook is held in a state sandwiched by the bending portion 71c2. In the operating range where the wire W is bent and shaped, the rotation of the sleeve 71 linked to the rotation of the rotating shaft 72 is restricted by the rotation restricting portion 74, and the sleeve 71 moves forward without rotating.

After bending the tip and end of each of the two wires W toward the rebar S, the motor 80 is further driven in the forward direction, causing the sleeve 71 to move further forward. When the sleeve 71 has moved to a specified position, the restriction on the rotation of the sleeve 71 by the rotation restriction part 74 is released.

As a result, the motor 80 is further driven in the forward direction, causing the sleeve 71 to rotate in conjunction with the rotating shaft 72, and as shown in FIG. 5F, the two wires W held by the wire holding body 70 begin to twist.

When the binding portion 7A is in the operating range where the sleeve 71 rotates to twist the wire W, the wire W held by the wire locking body 70 is twisted, and a force is applied to the wire locking body 70 that pulls it forward along the axial direction of the rotating shaft 72. Meanwhile, the rotating shaft 72 is subjected to a force that pushes it backward by the spring 72c. As a result, the wire locking body 70 moves forward while the rotating shaft 72 is subjected to a force that pushes it backward by the spring 72c, and as shown in FIG. 5G, it twists the wire W as it moves forward.

When the binding part 7A is in the operating range where the sleeve 71 rotates to twist the wire W, the wire retainer 70 further rotates in conjunction with the rotating shaft 72, and the wire retainer 70 and the rotating shaft 72 move forward in a direction that reduces the gap between the twisted portion of the wire W and the rebar S, further twisting the wire W.

As a result, as shown in FIG. 5H, the gap between the twisted portions of the wires W and the reinforcing bar S becomes smaller, and the two twisted wires W adhere closely to the reinforcing bar S in a manner that conforms to the reinforcing bar S.

When it is detected that the load on the motor 80 has reached a maximum by twisting the two wires W, the forward rotation of the motor 80 is stopped. Next, the motor 80 is driven in the reverse direction, causing the rotating shaft 72 to rotate in the reverse direction. When the sleeve 71 rotates in the reverse direction following the reverse rotation of the rotating shaft 72, the rotation of the sleeve 71 linked to the rotation of the rotating shaft 72 is restricted by the rotation restricting portion 74. As a result, the sleeve 71 moves in the rear direction, that is, in the direction of the arrow A2.

When the sleeve 71 moves rearward, the bent portions 71c1 and 71c2 separate from the wire W, and the retention of the wire W by the bent portions 71c1 and 71c2 is released. Also, when the sleeve 71 moves rearward, the opening/closing pin 71a passes through the opening/closing guide hole 73. As a result, the first side hook 70R moves in a direction away from the center hook 70C by rotating about the axis 71b. Also, the second side hook 70L moves in a direction away from the center hook 70C by rotating about the axis 71b. As a result, the two wires W binding the reinforcing bars S come out of the wire retainer 70.

<Example of the function and effect of the reinforcing bar binding machine according to the first embodiment>
Since the magazine 2A is not provided with a driving means for rotating the reel 20, the reel 20 rotates in response to the feeding of the wire W by feeding the wire W in the forward direction indicated by the arrow F. On the other hand, when the feeding of the wire W in the forward direction stops, the reel 20 continues to rotate slightly due to its inertia, so that the wire W wound around the reel 20 slackens and spreads in the radial direction of the reel 20.

In addition, when the wire W is fed in the reverse direction indicated by the arrow R, the reel 20 rotates as it is pushed by the wire W, but the rotation of the reel 20 is delayed relative to the feed speed of the wire W by the wire feed unit 3A. As a result, when the wire W is fed in the reverse direction indicated by the arrow R, the wire W bends in a direction expanding along the radial direction of the reel 20.

For this reason, in a configuration in which the separation section 23 is not provided in the feed path forming section 21d where the wire W is likely to bend, when the wire W is next fed in the positive direction indicated by the arrow F, a force is applied to wind the bent wire W around the reel 20, and there is a possibility that the wire W may become entangled with the wire W wound around the reel 20.

In response to this, by providing a separation section 23 in the feed path forming section 21d, the reel 20 stored in the magazine 2A and the wire W bent in the feed path forming section 21d are separated by the separation section 23 within a range where the bent wire W can easily approach the reel 20 when the wire W is fed in the positive direction indicated by the arrow F.

Therefore, the wire W that has been bent by being fed in the reverse direction indicated by the arrow R is prevented from being displaced toward the reel 20 when it is next fed in the forward direction indicated by the arrow F, and the wire W that is pulled out from the reel 20 is prevented from becoming entangled with the wire W wound around the reel 20.

The separation unit 23 also has rotating members 24a and 24b at the upstream and downstream ends in the feed direction of the wire W, so that the wire W, which is mainly fed in the forward direction, comes into contact with the rotating members 24a and 24b, causing the rotating members 24a and 24b to rotate. This reduces the sliding resistance when the wire W slides against the separation unit 23.

The wire W wound on the reel 20 is pulled out while moving along the axial direction of the reel 20 by feeding the wire W in the positive direction indicated by the arrow F. However, the wire W pulled out from the reel 20 may be biased inside the magazine 2A in the second direction indicated by the arrow C2, which is the opposite direction to the first direction in which the reel 20 is offset. In such a case, the wire W that has been fed in the positive direction by the wire feed section 3A and has been curled by the curl guide 50a may be guided in the first direction from the curl guide 50a and come off the induction guide 50b. This is particularly noticeable in the wire W that comes into contact with the drive-side feed gear 30L in a configuration in which two wires W are fed.

The magazine 2A is therefore provided with a restricting portion 25 that restricts the wire W from moving in the second direction indicated by arrow C2 in the feed path forming portion 21d. The restricting portion 25 is formed of a convex portion that protrudes from the side wall portion 21a in the first direction indicated by arrow C1, thereby restricting the wire W passing outside the separation portion 23 from moving in the second direction beyond the restricting portion 25. This restricts the wire W pulled out from the reel 20 from moving in the second direction inside the magazine 2A.

Therefore, within the magazine 2A, the position of the wire W along the axial direction of the circular feed path Ru and the axial direction of the reel 20 is stable without being biased in the second direction. Therefore, the wire W that is fed in the forward direction by the wire feed section 3A and has been curled by the curl guide 50a is prevented from being guided in the first direction from the curl guide 50a, and can be guided to enter the guide guide 50b. This eliminates the need to enlarge the guide guide 50b, and prevents the rebar binding machine 1A from becoming larger and heavier, and prevents deterioration in operability.

<Modifications of the reinforcing bar binding machine according to the present embodiment>
Other configuration examples of the magazine Fig. 6A is a side view showing an example of the magazine of the second embodiment, Fig. 6B is a cross-sectional view taken along line B1-B1 of Fig. 6A, Fig. 6C is a cross-sectional view taken along line B2-B2 of Fig. 6A, and Fig. 6D is a perspective view showing an example of the magazine of the second embodiment. Fig. 7A is a side view showing another example of the magazine of the second embodiment, Fig. 7B is a cross-sectional view taken along line B3-B3 of Fig. 7A, and Fig. 7C is a cross-sectional view taken along line B4-B4 of Fig. 7A. Figs. 8A, 8B, 8C, and 8D are perspective views showing an example of a rotating member of the magazine of the second embodiment.

In magazines 2B and 2C of the second embodiment, the same configuration as magazine 2A of the first embodiment will be described with the same reference numerals. Magazine 2B has a separation section 23 in feed path forming section 21d. Separation section 23 separates reel 20 housed in magazine 2B from wire W bent in feed path forming section 21d.

The separation section 23 is provided with a rotating member 24a on the upstream side of the feed direction of the wire W indicated by the arrow F, and a rotating member 24b on the downstream side of the feed direction of the wire W indicated by the arrow F. The rotating members 24a and 24b are provided so that their rotation axes extend in a direction intersecting the feed direction of the wire W, and are rotatably mounted when the wire W being fed in the forward or reverse direction comes into contact with them.

The magazine 2B has a regulating portion 26 on the rotating member 24b. The regulating portion 26 is configured as a slope in which the outer peripheral surface of the rotating member 24b slopes in a direction in which the diameter of the rotating member 24b becomes smaller as it moves from the end of the rotating member 24b in the second direction indicated by the arrow C2, which is opposite to the direction in which the reel 20 is offset, toward the first direction indicated by the arrow C1 in which the reel 20 is offset.

The restricting portion 26 has a conical shape that is inclined so that the wire W that comes into contact with the rotating member 24b is guided in a first direction along the axial direction of the rotating member 24b. As a result, when the wire W, which is mainly fed in the forward direction, comes into contact with the restricting portion 26 of the rotating member 24b, the conical shape of the restricting portion 26 guides the wire W in the first direction indicated by the arrow C1, and restricts the wire W from moving in the second direction indicated by the arrow C2 in the feed path forming portion 21d.

The magazine 2C has a regulating portion 26 on the rotating member 24a and the rotating member 24b. The regulating portion 26 is configured as a slope in which the outer peripheral surface of the rotating members 24a and 24b is inclined in a direction in which the diameter of the rotating members 24a and 24b becomes smaller as the reel 20 moves from the end of the rotating members 24a and 24b in the second direction indicated by the arrow C2, which is opposite to the direction in which the reel 20 is offset, toward the first direction indicated by the arrow C1 in which the reel 20 is offset.

The restricting portion 26 has a conical shape that is inclined so that the wire W that comes into contact with the rotating members 24a, 24b is guided in a first direction along the axial direction of the rotating members 24a, 24b. As a result, when the wire W that is mainly fed in the forward direction comes into contact with the restricting portion 26 of the rotating members 24a, 24b, the conical shape of the restricting portion 26 guides the wire W in the first direction indicated by the arrow C1, and restricts the wire W from moving in the second direction indicated by the arrow C2 in the feed path forming portion 21d.

In the configuration in which the rotating member 24b is provided with the regulating portion 26, as shown in FIG. 8A, the regulating portion 26 may be provided in a range of about 1/3 of the length of the rotating member 24b in the axial direction from the end of the rotating member 24b in the second direction indicated by the arrow C2, which is shorter than half of the axial direction of the rotating member 24b, to form a cone shape, and the remaining part may be cylindrical. Also, as shown in FIG. 8B, the regulating portion 26 may be provided in a range of about half of the length of the rotating member 24b in the axial direction from the end of the rotating member 24b in the second direction indicated by the arrow C2, which is shorter than half of the axial direction of the rotating member 24b, to form a cone shape, and the remaining part may be cylindrical. Furthermore, as shown in FIG. 8C, the regulating portion 26 may be provided in a range of about 2/3 of the length of the rotating member 24b in the second direction indicated by the arrow C2, which is longer than half of the axial direction of the rotating member 24b, to form a cone shape, and the remaining part may be cylindrical. Also, as shown in FIG. 8D, the regulating portion 26 may be provided over the entire axial direction of the rotating member 24b to form a cone shape.

In contrast, in a configuration in which the rotating member 24a is provided with a regulating portion 26, as shown in FIG. 8A, it is preferable to provide the regulating portion 26 in a range of about 1/3 of the length of the rotating member 24a, which is shorter than half of the axial direction of the rotating member 24a, from the end of the rotating member 24a in the second direction indicated by the arrow C2, to form a conical shape, and the remaining part is cylindrical. The diameter of the cylindrical part of the rotating member 24a is made thicker than that of the rotating member 24b. When the diameter of the rotating member 24a is thin, the curvature when the wire W comes into contact with the outer circumferential surface and changes the path of the wire W becomes smaller compared to when the diameter of the rotating member 24a is thick, so that the wire W may have a bending tendency. For this reason, the diameter of the rotating member 24a is made thicker. On the other hand, when the regulating portion 26 is provided over the entire rotating member 24a along the axial direction to form a conical shape, it is necessary to thicken the diameter of the narrow side of the cone shape, whereas there is a restriction on thickening the diameter of the wide side of the cone shape due to restrictions on the size of the magazine 2C, etc. This reduces the angle of the taper, and the effect of moving the wire W on the slope of the outer peripheral surface of the rotating member 24a is reduced. Therefore, it is preferable that the rotating member 24a has a conical shape with a restricting portion 26 provided within a range of about 1/3 of the axial length, and the remaining portion is cylindrical.

The magazine 2B may be configured to include the rotating member 24b without the rotating member 24a, and the rotating member 24b may be configured to include the regulating portion 26. The magazine 2C may be configured to include the rotating member 24b without the rotating member 24a, and the rotating member 24b may be configured to include the regulating portion 26. Furthermore, even if the reinforcing bars S are bound with one wire W, the magazines 2A, 2B, and 2C (reel 20) are offset, which causes a problem that the wire W moves in the second direction indicated by the arrow C2. By providing the regulating portions 25 and 26, the wire W can be restricted from moving in the second direction indicated by the arrow C2 in the feed path forming portion 21d. As a result, although the above-mentioned embodiment has been described as an example in which the reinforcing bars S are bound with multiple wires W, the reinforcing bars S may be bound with one wire W, and the number of wires W is not essential.

Figure 9A is a side view showing an example of a magazine according to the third embodiment, Figure 9B is a cross-sectional view taken along line B5-B5 in Figure 9A, Figure 9C is a cross-sectional view taken along line B6-B6 in Figure 9A, Figure 9D is a cross-sectional perspective view taken along line B7-B7 in Figure 9A, and Figure 9E is a perspective view showing an example of a magazine according to the third embodiment.

In the magazine 2D of the third embodiment, the same components as those of the magazine 2A of the first embodiment are described with the same reference numerals. The magazine 2D has a separation section 23 in the feed path forming section 21d. The separation section 23 separates the reel 20 stored in the magazine 2D from the wire W bent in the feed path forming section 21d. The separation section 23 has a convex portion 23b that protrudes in a first direction indicated by an arrow C1 from the side wall portion 21a of the magazine 2D toward the feed path forming section 21d. The convex portion 23b protrudes in the axial direction of the reel 20 along the peripheral wall portion 21b.

The separation unit 23 is provided with a rotating member 24b in the feed path forming portion 21d of the magazine 2D. The separation unit 23 may be configured to include a rotating member 24b without including a convex portion 23b. In a configuration in which the separation unit 23 includes a convex portion 23b, the rotating member 24b is provided downstream of the convex portion 23b in the feed direction of the wire W indicated by the arrow F. The separation unit 23 may further include a rotating member 24a in the feed path forming portion 21d of the magazine 2D. In a configuration in which the separation unit 23 does not include a convex portion 23b, the rotating member 24a is provided upstream of the rotating member 24b in the feed direction of the wire W indicated by the arrow F. In a configuration in which the separation unit 23 includes a convex portion 23b, the rotating member 24a is provided upstream of the convex portion 23b in the feed direction of the wire W indicated by the arrow F. The rotating members 24a and 24b are rotatable by their rotation axes extending in a direction intersecting the feed direction of the wire W and coming into contact with the wire W fed in the forward or reverse direction.

The magazine 2D includes a regulating portion 27 on the rotating member 24b. In a configuration in which the magazine 2D includes a rotating member 24a, the rotating member 24a may also include a regulating portion 27. The regulating portion 27 on the rotating member 24b is configured as a slope in which the outer peripheral surface of the rotating member 24b slopes in a direction in which the diameter of the rotating member 24b becomes smaller as the outer peripheral surface slopes from the end of the rotating member 24b in the first direction indicated by the arrow C1 in which the reel 20 is offset toward the second direction indicated by the arrow C2 opposite to the direction in which the reel 20 is offset. In a configuration further including a rotating member 24a and a regulating portion 27 on the rotating member 24a, the regulating portion 27 on the rotating member 24a is also configured with an inclined surface on the outer circumferential surface of the rotating member 24a in a direction in which the diameter of the rotating member 24a becomes smaller as the reel 20 moves from the end of the rotating member 24a in the first direction indicated by the arrow C1 in which the reel 20 is offset to the second direction indicated by the arrow C2 opposite to the direction in which the reel 20 is offset. In a configuration further including a rotating member 24a and a regulating portion 27 on the rotating member 24a, the inclination angles of the regulating portions 27 on the rotating members 24a and 24b with respect to the axial direction may be the same or different. For example, the inclination angle of the regulating portion 27 on the rotating member 24b may be larger than that of the regulating portion 27 on the rotating member 24a.

The magazine 2D may include a restricting portion 25 that restricts the movement of the wire W in the second direction indicated by the arrow C2 along the axial direction of the reel 20. The restricting portion 25 is configured as a protrusion that protrudes from the side wall portion 21a in the first direction indicated by the arrow C1. The restricting portion 25 may be fixed to the side wall portion 21a by a screw or the like, or may be provided integrally with the side wall portion 21a. The restricting portion 25 may also be fixed to the peripheral wall portion 21b facing the feed path forming portion 21d by a screw or the like, or may be provided integrally with the peripheral wall portion 21b.

The regulating portion 25 is provided upstream of the rotating member 24b in the feed direction of the wire W indicated by the arrow F. The regulating portion 25 may be provided downstream of the rotating member 24b in the feed direction of the wire W indicated by the arrow F. The regulating portion 25 may be provided upstream and downstream of the rotating member 24b in the feed direction of the wire W indicated by the arrow F. In a configuration including the rotating member 24b and the rotating member 24a, the regulating portion 25 is provided between the rotating member 24a and the rotating member 24b. In a configuration including the separating portion 23 including the convex portion 23b, the regulating portion 25 is provided on the outer side along the radial direction of the reel 20 with respect to the convex portion 23b. In a configuration including the rotating member 24b and the rotating member 24a, the regulating portion 25 is configured such that the length along the circumferential direction of the reel 20 is shorter than the length between the rotating member 24a and the rotating member 24b. In addition, the restricting portion 25 protrudes from the side wall portion 21a to a length that is approximately half or less than half the axial length of the rotating member 24a and/or the rotating member 24b. In other words, the restricting portion 25 protrudes from the side wall portion 21a to a length that is approximately half or less than half the axial length of the reel 20.

The restricting portion 27 is a cone-shaped portion inclined in such a direction that the wire W in contact with the rotating member 24b is guided in the second direction indicated by the arrow C2 along the axial direction of the rotating member 24b. As a result, when the wire W, which is mainly fed in the forward direction, comes into contact with the restricting portion 27 of the rotating member 24b, the cone-shaped restricting portion 27 guides the wire W in the second direction indicated by the arrow C2, and restricts the wire W from moving in the first direction indicated by the arrow C1 in the feed path forming portion 21d. In a configuration further including the rotating member 24a and the restricting portion 27 on the rotating member 24a, the restricting portion 27 of the rotating member 24a is also a cone-shaped portion inclined in such a direction that the wire W in contact with the rotating member 24a is guided in the second direction indicated by the arrow C2 along the axial direction of the rotating member 24a. As a result, when the wire W, which is mainly fed in the forward direction, comes into contact with the restricting portion 27 of the rotating member 24a and/or the rotating member 24b, the conical shape of the restricting portion 27 guides the wire W in the second direction indicated by the arrow C2, and restricts the wire W from moving in the first direction indicated by the arrow C1 in the feed path forming portion 21d. Therefore, in the magazine 2D, the position of the wire W along the axial direction of the annular feed path Ru and the axial direction of the reel 20 is stable without being biased in the first direction. Therefore, the wire W, which is fed in the forward direction by the wire feed portion 3A and has a curl habit by the curl guide 50a, can be guided to enter the guide guide 50b. As a result, even if the diameter of the reinforcing bar to be tied increases and the diameter of the feed path of the wire to be annular increases, there is no need to increase the length of the guide guide 50b in the direction along the axial direction of the annular feed path, and the reinforcing bar binding machine 1A can be prevented from becoming larger and heavier, and the deterioration of operability can be prevented.

In addition, in a configuration including a restricting portion 25, the restricting portion 25 is configured as a convex portion that protrudes from the side wall portion 21a in the first direction indicated by the arrow C1, thereby preventing the wire W passing outside the separation portion 23 from moving beyond the restricting portion 25 in the second direction. This prevents the wire W pulled out from the reel 20 from moving in the second direction inside the magazine 2D.

Therefore, in the magazine 2D, the position of the wire W along the axial direction of the annular feed path Ru and the axial direction of the reel 20 is stable without being biased in the first direction and the second direction. Therefore, the wire W that is fed in the forward direction by the wire feed unit 3A and curled by the curl guide 50a can be guided to enter the guide guide 50b. As a result, even if the diameter of the reinforcing bar to be tied increases and the diameter of the feed path of the wire to be annular increases, it is not necessary to increase the length of the guide guide 50b in the direction along the axial direction of the annular feed path, and the reinforcing bar binding machine 1A can be prevented from becoming larger and heavier, and the operability can be prevented from becoming worse. Note that the regulating unit 27 is configured to be provided on the rotating member 24b and/or the rotating member 24a, but the feed path forming unit 21d of the magazine 2D may be provided with a non-rotating member integrally or separately, and the non-rotating member may be provided with the regulating unit. Such a regulating portion is, for example, configured as a slope in which the surface of a member provided on the feed path forming portion 21d that faces the feed path forming portion 21d is inclined in a direction in which the distance between the feed path forming portion 21d and the opposing peripheral wall portion 21b becomes narrower as the surface moves from a second direction opposite to the direction in which the reel 20 is offset toward the first direction in which the reel 20 is offset.

Figure 10A is a cross-sectional view showing an example of a magazine according to the fourth embodiment, and Figure 10B is a perspective view showing an example of a magazine according to the fourth embodiment. Note that the cut surface in the cross-sectional view of Figure 10A is equivalent to line B5-B5 in Figure 9A.

In the magazine 2E of the fourth embodiment, the same configuration as the magazine 2A of the first embodiment and the magazine 2D of the third embodiment will be described with the same reference numerals.

The magazine 2E has a restricting portion 27b on the rotating member 24b. The magazine 2E may have a configuration in which the separation portion 23 does not have the convex portion 23b and the rotating member 24a, but has the rotating member 24b. In a configuration in which the rotating member 24a is provided, the rotating member 24a may have the restricting portion 27 described above. The restricting portion 27b of the rotating member 24b has a first restricting portion 27b1, a second restricting portion 27b2, and a bottom portion 27b3.

The first regulating portion 27b1 is configured as a slope in which the outer peripheral surface of the rotating member 24b slopes in a direction in which the diameter of the rotating member 24b becomes smaller as it moves from the end of the rotating member 24b in the first direction indicated by the arrow C1 in which the reel 20 is offset toward the bottom portion 27b3.

The second regulating portion 27b2 is configured as a slope in which the outer peripheral surface of the rotating member 24b slopes in a direction in which the diameter of the rotating member 24b becomes smaller as it moves from the end of the rotating member 24b in the second direction indicated by the arrow C2, which is opposite to the direction in which the reel 20 is offset, toward the bottom portion 27b3.

The bottom 27b3 is configured by providing a portion where the diameter of the rotating member 24b is smallest, near the center of the axial direction of the rotating member 24b, between the first restricting portion 27b1 and the second restricting portion 27b2. The bottom 27b3 is provided at the center of the axial direction of the rotating member 24b, or at a portion closer to the center of the axial direction of the rotating member 24b, for example, in the second direction. In this example, the bottom 27b3 is configured as a V-shaped groove extending in the circumferential direction of the rotating member 24b, by making the cross-sectional shape along the axial direction of the rotating member 24b V-shaped.

The restricting portion 27b has a conical shape that is inclined so that the wire W in contact with the rotating member 24b is guided in a first direction indicated by an arrow C1 or a second direction indicated by an arrow C2 toward the bottom portion 27b3 near the center along the axial direction of the rotating member 24b.

As a result, when the wire W, which is mainly fed in the forward direction, comes into contact with the restricting portion 27b of the rotating member 24b, the conical shape of the restricting portion 27b guides the wire W toward the center of the rotating member 24b along the axial direction. In addition, the conical shape of the restricting portion 27b restricts the wire W from moving from the center of the rotating member 24b along the axial direction toward the first direction indicated by arrow C1 or the second direction indicated by arrow C2.

Therefore, in the magazine 2E, the position of the wire W along the axial direction of the circular feed path Ru and the axial direction of the reel 20 is stable without being biased in the first and second directions. Therefore, the wire W that is fed in the forward direction by the wire feed unit 3A and curled by the curl guide 50a can be guided to enter the guide guide 50b. As a result, even if the diameter of the rebar to be tied increases and the diameter of the feed path of the wire that becomes a loop increases, there is no need to increase the length of the guide guide 50b in the direction along the axial direction of the loop feed path, and this prevents the rebar binding machine 1A from becoming larger and heavier, and prevents deterioration in operability.

Figure 11A is a cross-sectional view showing an example of a magazine according to the fifth embodiment, and Figure 11B is a perspective view showing an example of a magazine according to the fifth embodiment. Note that the cut surface in the cross-sectional view of Figure 11A is equivalent to the line B5-B5 in Figure 9A.

In the magazine 2F of the fifth embodiment, the same components as those in the magazine 2A of the first embodiment and the magazine 2D of the third embodiment are described with the same reference numerals.

The magazine 2F is provided with a restricting portion 28 on the rotating member 24b. The magazine 2F may be configured to include the rotating member 24b without including the convex portion 23b and the rotating member 24a on the separation portion 23. In a configuration including the rotating member 24a, the above-mentioned restricting portion 27 may be provided on the rotating member 24a. The restricting portion 28 includes a first restricting portion 28a that restricts the wire W from moving in the first direction indicated by the arrow C1, a second restricting portion 28b that restricts the wire W from moving in the second direction indicated by the arrow C2, and a bottom portion 28c formed between the first restricting portion 28a and the second restricting portion 28b. The restricting portion 28 is configured by providing a recess extending in the circumferential direction of the rotating member 24b on the outer peripheral surface near the center in the axial direction of the rotating member 24b. The first restricting portion 28a is provided in a form that stands up from the bottom portion 28c at the end of the restricting portion 28 in the first direction. The second restricting portion 28b is provided in a form of standing from the bottom portion 28c at the end portion in the second direction of the restricting portion 28, facing the first restricting portion 28a. The bottom portion 28c is configured by providing a portion where the diameter of the rotating member 24b is smallest between the first restricting portion 28a and the second restricting portion 28b. The restricting portion 28 is configured such that the radial depth of the rotating member 24b, which is the depth from the outer circumferential surface of the rotating member 24b to the bottom portion 28c, is long enough for the wire W to enter and for the wire W fed along the rotating member 24b to be held within the restricting portion 28. The restricting portion 28 is configured such that the width along the axial direction of the rotating member 24b, which is the interval between the first restricting portion 28a and the second restricting portion 28b, is long enough for the wire W to enter and for the wire W to move a predetermined amount along the axial direction of the rotating member 24b within the restricting portion 28. The restricting portion 28 is provided at the center of the axial direction of the rotating member 24b, or at a location closer to the center of the axial direction of the rotating member 24b, for example, in the second direction.

The wire W enters the restricting portion 28 of the rotating member 24b with the wire W being fed mainly in the forward direction. In a configuration further including a rotating member 24a and a restricting portion 27 on the rotating member 24a, when the wire W being fed mainly in the forward direction comes into contact with the restricting portion 27 of the rotating member 24a, the conical shape of the restricting portion 27 guides the wire W in the second direction indicated by the arrow C2 while it is fed. This restricts the wire W from moving in the first direction indicated by the arrow C1 in the feed path forming portion 21d.

When the wire W is guided in the second direction indicated by the arrow C2 by the restricting portion 27 of the rotating member 24a, the wire W is encouraged to enter the restricting portion 28 of the rotating member 24b. The wire W that has entered the restricting portion 28 of the rotating member 24b is fed while still inside the restricting portion 28 due to the uneven shape of the outer peripheral surface of the rotating member 24b. As a result, the first restricting portion 28a and the second restricting portion 28b restrict the wire W in the feed path forming portion 21d from moving from near the center along the axial direction of the rotating member 24b toward the first direction indicated by the arrow C1 or the second direction indicated by the arrow C2.

Therefore, in the magazine 2F, the position of the wire W along the axial direction of the circular feed path Ru and the axial direction of the reel 20 is stable without being biased in the first and second directions. Therefore, the wire W that is fed in the forward direction by the wire feed unit 3A and curled by the curl guide 50a can be guided to enter the guide guide 50b. As a result, even if the diameter of the rebar to be tied increases and the diameter of the feed path of the wire that becomes a loop increases, there is no need to increase the length of the guide guide 50b in the direction along the axial direction of the loop feed path, and this prevents the rebar binding machine 1A from becoming larger and heavier, and prevents deterioration in operability.

Figure 12A is a side view showing an example of a magazine according to the sixth embodiment, Figure 12B is a cross-sectional view taken along line B8-B8 in Figure 12A, Figure 12C is a perspective cross-sectional view taken along line B9-B9 in Figure 12A, and Figure 12D is a perspective view showing an example of a magazine according to the sixth embodiment.

In the magazine 2G of the sixth embodiment, the same components as those of the magazine 2A of the first embodiment and the magazine 2D of the third embodiment are described with the same reference numerals. The magazine 2G includes a restricting portion 29a that restricts the wire W from moving along the axial direction of the reel 20 and the axial direction of the annular feed path Ru, which is a direction intersecting the direction in which the wire W is fed in the feed path forming portion 21d. The restricting portion 29a includes a second restricting portion 29 that restricts the wire W from moving in a second direction indicated by the arrow C2 along the axial direction of the reel 20. The second restricting portion 29 is provided downstream of the position where the separating portion 23 is provided in the feed path forming portion 21d in the feed direction of the wire W fed in the forward direction, and is configured as a convex portion that protrudes from the side wall portion 21a in the first direction indicated by the arrow C1.

The second restricting portion 29 is provided on the outside along the radial direction of the reel 20 with respect to the rotating member 24b. The protruding height of the second restricting portion 29 from the side wall portion 21a is shorter than approximately half the axial length of the rotating member 24b. The second restricting portion 29 faces the outer peripheral surface of the rotating member 24b at a predetermined interval. The second restricting portion 29 may face the outer peripheral surface of the rotating member 24b at a distance narrower than the diameter of the wire W to prevent the wire W from moving in the second direction indicated by arrow C2 and entering between the rotating member 24b and the second restricting portion 29.

The restricting portion 29a includes a first restricting portion 22b that restricts the wire W from moving in a first direction indicated by arrow C1 along the axial direction of the reel 20. The first restricting portion 22b is provided on the lid portion 22 that constitutes the side wall portion of the magazine 2G in the first direction. When the magazine 2G is closed by the lid portion 22, the first restricting portion 22b is provided downstream in the feed direction of the wire W fed in the forward direction from the position where the separation portion 23 is provided in the feed path forming portion 21d, and is composed of a protrusion that protrudes from the lid portion 22 in the second direction indicated by arrow C2.

The first restricting portion 22b is provided on the outside along the radial direction of the reel 20 with respect to the rotating member 24b. The protruding height of the first restricting portion 22b from the lid portion 22 is shorter than approximately half the axial length of the rotating member 24b. The first restricting portion 22b faces the outer peripheral surface of the rotating member 24b at a predetermined distance. The first restricting portion 22b may face the outer peripheral surface of the rotating member 24b at a distance wider than the diameter of the wire W so as not to interfere with the opening and closing of the lid portion 22 and to prevent the wire W from moving in the first direction indicated by the arrow C1 and entering between the rotating member 24b and the first restricting portion 22b.

As a result, when the magazine 2G is closed by the lid 22, the restricting portion 29a forms a bottom 29b between the second restricting portion 29 and the first restricting portion 22b. The bottom 29b is configured by providing a recess facing outward along the radial direction of the reel 20 between the first restricting portion 22b and the second restricting portion 29. The restricting portion 29a is configured to have a depth along the radial direction of the reel 20 that is long enough to allow the wire W to enter and to hold the wire W within the restricting portion 29a. The restricting portion 29a is configured to have a width along the axial direction of the rotating member 24b that is long enough to allow the wire W to enter and to move a predetermined amount along the axial direction of the rotating member 24b within the restricting portion 29a. The restricting portion 29a is provided opposite the center of the axial direction of the rotating member 24b.

The wire W that is fed in contact with the outer peripheral surface of the rotating member 24b enters the restricting portion 29a. In a configuration that further includes a rotating member 24a and a restricting portion 27 on the rotating member 24a, when the wire W that is fed mainly in the forward direction comes into contact with the restricting portion 27 of the rotating member 24a, the conical shape of the restricting portion 27 guides the wire W in the second direction indicated by the arrow C2 while it is fed. This restricts the wire W from moving in the first direction indicated by the arrow C1 in the feed path forming portion 21d.

In addition, the wire W guided in the second direction indicated by the arrow C2 by the restricting portion 27 of the rotating member 24a is encouraged to enter the restricting portion 29a. The wire W that has entered the restricting portion 29a is fed while still in the restricting portion 29a. This restricts the wire W in the feed path forming portion 21d from moving from near the center along the axial direction of the rotating member 24b toward the first direction indicated by the arrow C1 or the second direction indicated by the arrow C2.

Therefore, within the magazine 2G, the position of the wire W along the axial direction of the circular feed path Ru and the axial direction of the reel 20 is stable without being biased in the first and second directions. Therefore, the wire W that is fed in the forward direction by the wire feed unit 3A and curled by the curl guide 50a can be guided to enter the guide guide 50b. As a result, even if the diameter of the rebar to be tied increases and the diameter of the feed path of the wire that becomes a loop increases, there is no need to increase the length of the guide guide 50b in the direction along the axial direction of the loop feed path, and this prevents the rebar binding machine 1A from becoming larger and heavier, and prevents deterioration in operability.

Figure 13A is a cross-sectional view showing an example of a magazine according to the seventh embodiment. Note that the cut surface in the cross-sectional view of Figure 13A is equivalent to line B5-B5 in Figure 9A.

In the seventh embodiment of the magazine 2H, the same configurations as those in the magazine 2A of the first embodiment and the magazine 2E of the fourth embodiment are described with the same reference numerals.

The magazine 2H has a restricting portion 27b on the rotating member 24b. The magazine 2H may have a configuration in which the separation portion 23 does not have the convex portion 23b and the rotating member 24a, but has the rotating member 24b. In a configuration in which the rotating member 24a is provided, the above-mentioned restricting portion 27 may be provided on the rotating member 24a. The restricting portion 27b of the rotating member 24b is divided into at least two portions in the axial direction, and has a first restricting portion 27b1 and a second restricting portion 27b2.

The first regulating portion 27b1 is composed of a cone-shaped member having a slope in which the outer peripheral surface of the rotating member 24b slopes in a direction in which the diameter of the rotating member 24b becomes smaller as it moves from the end of the rotating member 24b in the first direction indicated by the arrow C1 in which the reel 20 is offset toward the second direction indicated by the arrow C2, which is opposite to the direction in which the reel 20 is offset.

The second regulating portion 27b2 is composed of a cone-shaped member having a slope in which the outer peripheral surface of the rotating member 24b is inclined in the direction in which the diameter of the rotating member 24b becomes smaller as it moves from the end of the rotating member 24b in the second direction indicated by the arrow C2 toward the first direction indicated by the arrow C1.

The rotating member 24b has a first restricting portion 27b1 and a second restricting portion 27b2 rotatably attached to the shaft 24c. When the first restricting portion 27b1 and the second restricting portion 27b2 are attached to the shaft 24c, the bottom portion 27b3 is formed between the first restricting portion 27b1 and the second restricting portion 27b2.

The bottom portion 27b3 is configured by providing a portion where the diameter of the rotating member 24b is smallest, near the center of the rotating member 24b in the axial direction.

13B, 13C, and 13D are cross-sectional views showing an example of the rotating member 24b. The rotating member 24b is prepared with a combination of a first restricting portion 27b1 and a second restricting portion 27b2 of different types, each having a different axial length and an inclination angle of the inclined surface. As a result, the combination of the first restricting portion 27b1 and the second restricting portion 27b2 can realize the rotating member 24b in a desired form, such as a form in which the bottom portion 27b3 is provided in a portion closer to the axial center of the rotating member 24b in the first direction, a form in which the bottom portion 27b3 is provided in a portion closer to the axial center of the rotating member 24b in the second direction, or a form in which the bottom portion 27b3 is provided in the axial center of the rotating member 24b (not shown).

The rotating member 24b may also be configured by combining three or more divided parts. For example, as shown in FIG. 13C, the bottom portion 27b3 may be configured as a separate part from the first restricting portion 27b1 and the second restricting portion 27b2.

Therefore, within the magazine 2H, the position of the wire W along the axial direction of the circular feed path Ru and the axial direction of the reel 20 can be stabilized at the desired position without being biased in the first direction or the second direction.

Figure 14A is a cross-sectional view showing an example of a magazine according to the eighth embodiment, and Figure 14B is a perspective view showing an example of a magazine according to the eighth embodiment. The cut surface in the cross-sectional view of Figure 14A is equivalent to line B5-B5 in Figure 9A. Figures 14C and 14D are cross-sectional views showing an example of an adjustment unit.

In the eighth embodiment of the magazine 2J, the same configurations as those in the first embodiment of the magazine 2A and the fourth embodiment of the magazine 2E are described with the same reference numerals.

The magazine 2J has a regulating portion 27b on the rotating member 24b. The magazine 2J may have a configuration in which the separation section 23 does not have the convex portion 23b and the rotating member 24a, but has the rotating member 24b. In a configuration in which the rotating member 24a is included, the above-mentioned regulating portion 27 may be included on the rotating member 24a. The regulating portion 27b of the rotating member 24b has a first regulating portion 27b4, a second regulating portion 27b5, and an adjustment portion 27b6.

The first regulating portion 27b4 is composed of a conical member having a slope in which the outer peripheral surface of the rotating member 24b is inclined in the direction in which the diameter of the rotating member 24b becomes smaller as it moves from the end side of the rotating member 24b in the first direction indicated by the arrow C1 in which the reel 20 is offset toward the adjustment portion 27b6.

The second regulating portion 27b5 is composed of a cone-shaped member having a slope in which the outer peripheral surface of the rotating member 24b is inclined in the direction in which the diameter of the rotating member 24b becomes smaller as it moves from the end side of the rotating member 24b in the second direction indicated by the arrow C2, which is opposite to the direction in which the reel 20 is offset, toward the adjustment portion 27b6.

The adjustment portion 27b6 is configured by connecting a cone-shaped portion having an inclined surface whose outer circumferential surface slopes in a direction in which the diameter decreases from the end side in the first direction indicated by the arrow C1 toward the center in the axial direction, and a cone-shaped portion having an inclined surface whose outer circumferential surface slopes in a direction in which the diameter decreases from the end side in the second direction indicated by the arrow C2 toward the center in the axial direction. The adjustment portion 27b6 has a smallest diameter near the center along the axial direction, and a bottom 27b6a is formed at the smallest diameter portion. In this example, the bottom 27b6a is configured as a V-shaped groove extending in the circumferential direction of the adjustment portion 27b6 by making the cross-sectional shape of the adjustment portion 27b6 along the axial direction V-shaped.

The rotating member 24b has a first restricting portion 27b4, a second restricting portion 27b5, and an adjustment portion 27b6 rotatably attached to the shaft 24c. The adjustment portion 27b6 is configured to be movable in the axial direction relative to the first restricting portion 27b4 and the second restricting portion 27b5. The rotating member 24b includes a positioning portion 27b7 that adjustably positions the axial position of the adjustment portion 27b6 relative to the first restricting portion 27b4 and the second restricting portion 27b5.

The positioning portion 27b7 has a groove portion 27b8 along the circumferential direction on the inner peripheral surface of the first restricting portion 27b4 and the second restricting portion 27b5. The positioning portion 27b7 also has an elastic member 27b9 fitted into the groove portion 27b8. The elastic member 27b9 is composed of an elastically deformable member such as an O-ring. The positioning portion 27b7 also has a groove portion 27b10 along the circumferential direction on the outer peripheral surface of the adjustment portion 27b6. The groove portion 27b10 has a shape that allows engagement and disengagement of the elastic member 27B9, and is formed at multiple locations along the axial direction of the adjustment portion 27b6.

When the adjustment portion 27b6 is inserted into the inner peripheral surface of the first and second restricting portions 27b4 and 27b5, the elastic member 27B9 fits into any of the grooves 27b10 of the adjustment portion 27b6, thereby determining the axial position of the adjustment portion 27b6 relative to the first and second restricting portions 27b4 and 27b5. When the adjustment portion 27b6 is moved axially relative to the first and second restricting portions 27b4 and 27b5, the elastic member 27B9 elastically deforms, changing the groove 27b10 into which the elastic member 27B9 fits, and the axial position of the adjustment portion 27b6 relative to the first and second restricting portions 27b4 and 27b5 is determined according to the position at which the groove 27b10 is provided.

As a result, the rotating member 24b can be realized in a desired form, such as a form in which the bottom 27b6a is provided in a position closer to the first direction than the axial center of the rotating member 24b as shown in Figures 14C and 14D, a form in which the bottom 27b6a is provided in a position closer to the second direction than the axial center of the rotating member 24b, or a form in which the bottom 27b6a is provided in the axial center of the rotating member 24b (not shown). Therefore, in the magazine 2J, the position of the wire W along the axial direction of the circular feed path Ru and the axial direction of the reel 20 can be adjusted in stages, and the position of the wire W in the same direction can be stabilized at a desired position without being biased in the first or second direction.

Figure 15A is a side view showing an example of a magazine according to the ninth embodiment, Figure 15B is a cross-sectional view taken along line B10-B10 in Figure 15A, and Figure 15C is a cross-sectional perspective view taken along line B11-B11 in Figure 15A.

In the magazine 2K of the ninth embodiment, the same components as those of the magazine 2A of the first embodiment and the magazine 2D of the third embodiment are described with the same reference numerals. The magazine 2K includes a separation section 23 in the feed path forming section 21d. The separation section 23 separates the reel 20 housed in the magazine 2K from the wire W bent in the feed path forming section 21d.

The magazine 2K has a rotating member 24b downstream of the convex portion 23b of the separation portion 23 in the feed direction of the wire W indicated by the arrow F. The magazine 2K also has a regulating portion 27 on the rotating member 24b. The magazine 2K may have a rotating member 24a upstream of the convex portion 23b of the separation portion 23 in the feed direction of the wire W indicated by the arrow F, or may have a regulating portion 27 on the rotating member 24b.

The magazine 2K includes a restricting member 25a that restricts the movement of the wire W in the second direction indicated by the arrow C2 along the axial direction of the reel 20, and an adjustment member 25b that adjustably positions the restricting member 25a.

The regulating member 25a is provided upstream of the rotating member 24b in the feed direction of the wire W indicated by the arrow F. The regulating member 25a may be provided downstream of the rotating member 24b in the feed direction of the wire W indicated by the arrow F. The regulating member 25a may also be provided upstream and downstream of the rotating member 24b in the feed direction of the wire W indicated by the arrow F. In a configuration including the rotating member 24b and another rotating member 24a, the regulating member 25a is provided between the rotating members 24a and 24b, on the outside along the radial direction of the reel 20 with respect to the separating portion 23. The regulating member 25a is supported by the adjusting member 25b in a form that protrudes from the side of the side wall portion 21a in the first direction indicated by the arrow C1.

The adjustment member 25b is formed of a screw and is rotatably inserted into a hole 25c formed in the side wall portion 21a. The adjustment member 25b inserted into the hole 25c extends in the axial direction of the reel 20 in a first direction indicated by an arrow C1 and a second direction indicated by an arrow C2. The adjustment member 25b is also screwed into a female threaded hole 25d formed in the regulating member 25a. As a result, when the adjustment member 25b is rotated, the regulating member 25a moves in the first direction indicated by an arrow C1 and the second direction indicated by an arrow C2, and the protruding height from the side wall portion 21a can be arbitrarily switched. The adjustment member 25b may be provided with an anti-slip structure that adjustably fixes the position of the regulating member 25a, for example, by increasing the friction between the male screw and the female screw.

When the wire W, which is mainly fed in the forward direction, comes into contact with the restricting portion 27 of the rotating member 24a and/or the rotating member 24b, the conical shape of the restricting portion 27 guides the wire W in the second direction indicated by the arrow C2, and restricts the wire W from moving in the first direction indicated by the arrow C1 in the feed path forming portion 21d.

On the other hand, the regulating member 25a is provided in a form that protrudes from the side wall portion 21a in the first direction indicated by the arrow C1, so that the wire W passing outside the separation portion 23 is prevented from moving beyond the regulating member 25a in the second direction. This prevents the wire W pulled out from the reel 20 from shifting in the second direction inside the magazine 2K. Furthermore, when the adjustment member 25b is rotated, the protruding height of the regulating member 25a from the side wall portion 21a can be arbitrarily switched. Therefore, the position of the wire W along the axial direction of the circular feed path Ru and the axial direction of the reel 20 can be arbitrarily adjusted inside the magazine 2K, and the position of the wire W in the same direction can be stabilized at a desired position without being biased in the first direction or the second direction.

As described above, in a configuration in which the position of the wire W can be adjusted along the axial direction of the circular feed path Ru and the axial direction of the reel 20, the position of the wire W in the same direction can be adjusted depending on the size of the diameter of the circular wire feed path so that the wire W, which is fed in the forward direction by the wire feed section 3A and has been curled by the curl guide 50a, enters the induction guide 50b.

In the third to ninth embodiments described above, the reinforcing bars S may be bound with multiple wires W or with a single wire W, and the number of wires W is not a required configuration.

1A...rebar tying machine, 10A...main body, 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, 2J, 2K...magazine, 20...reel, 21a...side wall, 21b...circumferential wall, 21c...feed outlet, 21d...feed path forming section, 21e...storage position, 21f...shaft, 22...lid, 22a...hinge, 22b...first regulating section, 23...separating section, 23a...holding member, 23b...convex section, 24a, 24b...rotating member, 25...regulating section, 25a...regulating member, 25b...adjusting member, 25c...hole, 25d...female thread hole, 26...regulating section, 27...regulating section, 27b... Regulating portion, 27b1...first regulating portion, 27b2...second regulating portion, 27b3...bottom portion, 27b4...first regulating portion, 27b5...second regulating portion, 27b6...adjusting portion, 27b6a...bottom portion, 27b7...positioning portion, 27b8...groove portion, 27b9...elastic member, 27b10...groove portion, 28...regulating portion, 29...second regulating portion, 29a...regulating portion, 3A...wire feed portion, 30 (30L, 30R)...feed gear, 31...feed motor, 5A...curl forming portion, 50a...curl guide, 50b...guiding guide, 6A...cutting portion, 7A...binding portion, 8A...driving portion, W...wire

Claims (15)

A magazine for storing wires;
a wire feed unit that feeds the wire contained in the magazine;
a curl forming section that forms a circular feed path for winding the wire fed by the wire feed section around a bundle;
A bundling unit is provided for twisting the wire wound around the bundling object,
The curl forming unit includes:
a curl guide for curling the wire fed by the wire feeding unit;
a guide for guiding the wire curled by the curl guide to the bundling section,
The magazine includes:
a feed path forming unit that forms a feed path for the wire;
a regulating section that regulates movement of the wire in a direction intersecting the direction in which the wire is fed in the feed path forming section and along the axial direction of the annular feed path. The magazine accommodates a reel on which a wire is wound,
The magazine has a wire feed opening on a side connected to the wire feed unit, and the feed path forming portion on the opposite side of the feed opening across a reel storage position,
The binding machine according to claim 1 , wherein the regulating portion regulates movement of the wire in the feed path forming portion along an axial direction of the reel. The magazine is disposed offset in one direction with respect to the curl guide,
The binding machine according to claim 2 , wherein the regulating portion regulates the wire from moving in a second direction that is opposite to a first direction in which the reel is offset in the feed path forming portion. The binding machine according to claim 3 , wherein the regulating portion is configured as a convex portion protruding in the first direction from a side wall portion of the magazine in the second direction. The magazine includes a rotating member in the feed path forming section, the rotating member having an axis of rotation extending in a direction intersecting with a wire feed direction,
The binding machine of claim 3 , wherein the regulating portion is configured with a slope in which the outer peripheral surface of the rotating member slopes in a direction in which the diameter of the rotating member becomes smaller as the rotating member moves from an end of the rotating member in the second direction toward the first direction. The magazine is disposed offset in one direction with respect to the curl guide,
The binding machine according to claim 2 , wherein the regulating portion regulates the wire from moving in a first direction in which the reel is offset in the feed path forming portion. The magazine includes a rotating member in the feed path forming section, the rotating member having an axis of rotation extending in a direction intersecting with a wire feed direction,
The binding machine of claim 6, wherein the regulating portion is configured with a slope in which the outer surface of the rotating member slopes in a direction in which the diameter of the rotating member becomes smaller as the rotating member moves from the end of the rotating member in the first direction toward a second direction that is the opposite direction to the first direction. The binding machine according to claim 7 , further comprising a restricting portion protruding in the first direction from a side wall portion of the magazine in the second direction. The magazine is disposed offset in one direction with respect to the curl guide,
The regulating portion is
a first restricting portion that restricts the wire from moving in a first direction in which the reel is offset in the feed path forming portion;
a second restricting portion that restricts the wire from moving in a second direction that is a direction opposite to the first direction;
The binding machine according to claim 2 , further comprising a bottom portion formed between the first regulating portion and the second regulating portion. The feed path forming section is provided with a rotating member having an axis of rotation extending in a direction intersecting with a wire feed direction,
the first regulating portion is configured with an inclined surface in which an outer peripheral surface of the rotating member is inclined in a direction in which a diameter of the rotating member becomes smaller from an end of the rotating member in the first direction toward a second direction that is the opposite direction to the first direction,
the second regulating portion is configured with an inclined surface in which an outer circumferential surface of the rotating member is inclined in a direction in which a diameter of the rotating member becomes smaller as the outer circumferential surface of the rotating member is inclined from an end of the rotating member in the second direction toward the first direction,
The binding machine according to claim 9 , wherein the bottom portion is configured by providing a portion, at which the diameter of the rotating member is smallest, between the first regulating portion and the second regulating portion. The feed path forming section is provided with a rotating member having an axis of rotation extending in a direction intersecting with a wire feed direction,
The restricting portion is configured by providing a recessed portion on an outer circumferential surface of the rotating member, the recessed portion extending in a circumferential direction of the rotating member,
The first restricting portion is provided at an end portion of the restricting portion in the first direction,
the second restricting portion is provided at an end of the restricting portion in the second direction, facing the first restricting portion,
The binding machine according to claim 9 , wherein the bottom portion is configured by providing a portion, at which the diameter of the rotating member is smallest, between the first regulating portion and the second regulating portion. the first restricting portion is formed of a protrusion protruding in the second direction from a side wall portion of the magazine in the first direction,
the second restricting portion is formed of a protrusion protruding in the first direction from a side wall portion of the magazine in the second direction,
The binding machine according to claim 9 , wherein the bottom portion is configured by providing a recess facing outward along a radial direction of the reel between the first regulating portion and the second regulating portion. The strapping machine according to claim 10 or 11, wherein the position of the bottom portion along the axial direction of the rotating member is adjustable. The magazine is disposed offset in one direction with respect to the curl guide,
The strapping machine according to claim 2 , wherein the regulating portion is configured so that a position thereof can be adjusted along a first direction in which the reel is offset and along a second direction that is opposite to the first direction. the magazine includes a plurality of the rotating members arranged along a wire feeding direction,
The binding machine according to claim 5 , wherein at least one of the rotating members is provided with the regulating portion.

Images