A binding machine includes a magazine configured to accommodate a wire, a wire feeding portion configured to feed the wire accommodated in the magazine, a curl forming portion configured to constitute an annular feeding path for winding the wire fed by the wire feeding portion around a binding object, and a binding portion configured to twist the wire wound around the binding object. The curl forming portion includes a curling guide that curls the wire fed by the wire feeding portion, and a leading guide that leads the wire curled by the curling guide to the binding portion. The magazine includes a feeding path forming portion that forms a feeding path of the wire, and a regulating portion that regulates movement of the wire in a direction intersecting a direction in which the wire is fed in the feeding path forming portion.

A binding machine includes a wire feeding unit configured to feed a wire to be wound on an object to be bound and a binding unit configured to twist the wire wound on the object to be bound. The wire feeding unit includes a pair of feeding members configured to sandwich the wire between the pair of feeding members and to feed the wire by a rotating operation, a wire feeding drive unit connected to one feeding member and configured to rotatively drive the one feeding member, and a load reducing part configured to reduce or remove a load, which is to be applied to the wire via the one feeding member, of the wire feeding drive unit.

A rebar tying tool may include a controller configured to selectively execute one of a plurality of control modes including a single-action control mode and a repetitive-action control mode. While the controller executes the single-action control mode, a tying mechanism may perform a tying operation in response to an activation of a manipulation member by a user. While the controller executes the repetitive-action control mode, the tying mechanism may perform the tying operation in response to a detection of the at least one of rebars by a detection mechanism.

An apparatus for tying a wire 46; 52 around one or more objects such as concrete reinforcing bars 2 is disclosed. It comprises means for passing the wire 46; 52 in a loop around the bars and a rotatable head 4 for twisting the ends of the loop together. The head 4 has at least one gripping means such as a variable force clutch 32 for gripping the wire, the gripping means being adapted to provide a variable gripping force so as to apply a predetermined tension to the wire during at least a first phase of twisting. Also disclosed is pre-feeding the wire between tying operations; conditioning the surface of the wire; and using the electrical conductivity of the reinforcing bars to verify that the bars are present before tying.

A binding machine includes: a holding portion configured to hold a tip end side of a cured wire rod; a feed unit configured to hold a base end side of the wire rod, the tip end side of which is held by the holding portion, such that the base end side of the wire rod is able to be fed out; a twisting unit configured to twist the wire rod; and a control unit configured to control the feed unit and the twisting unit. The control unit is configured to control the feed unit to feed the wire rod when detecting a first signal, and is configured to control the twisting unit to twist the wire rod when detecting a second signal.

A reinforcing bar binding machine includes a wire reel which is supported on a binding machine main body, a feed motor which drives the wire reel, a twisting mechanism which twists and binds a wire, a twist motor which drives the twisting mechanism and a brake actuating unit which is actuated by the twist motor. The twist motor starts a normal rotation when the wire is fed by a predetermined amount. The twisting mechanism twists the wire to complete the binding after the twisting mechanism is advanced to a predetermined position by the normal rotation. The twist motor starts a reverse rotation after completing the binding, and the twisting mechanism is retracted to a stand-by position by the reverse rotation. Before completing the binding, the brake actuating unit brakes the wire reel to stop the wire reel and releases the braking with respect to the wire reel.

A knot plate (1) for a tying machine (3) is described. The knot plate (1) is designed as a substantially circular disc, wherein the knot plate (1) comprises: an aperture (5) arranged substantially in the middle of the knot plate (1), wherein the aperture (5) comprises a substantially circular form, and two through slots (7, 9) for receiving of a binding wire (11) arranged in the knot plate (1) substantially on opposite sides of each other in relation to the aperture (5). The knot plate (1) comprises two grooves (13, 15) for receiving the binding wire, wherein each of the two grooves (13, 15) connects one respective through slot (7, 9) of the two through slots (7, 9) with the aperture (5), each of the two grooves (13, 15) ends in the aperture (5) in a direction that coincides with substantially tangential directions of the aperture (5) so that initially the binding wire substantially follows a wall of the substantially circular formed aperture (5). A tying machine (3) comprising a knot plate (1) is also described.

A wire locking mechanism (200, 300, 400, 500, 600, 700) for a reinforcement bar, rebar, wire tying device (100), the locking mechanism comprising (200, 300, 400, 500, 600, 700) a holding member (210, 310) and a counter-holding member (220, 320) arranged to engage respective and opposite sides of a wire (230) to releasably hold the wire (230) in a locking position, where a holding force exerted on the wire (230) by the holding member (210, 310) is normal to a holding plane (A2), wherein the holding member (210, 310) is supported on a first end of an excentre arm (240, 340), the excentre arm (240, 340) being rotatably supported on a first shaft (250, 350) to rotate (R1) about an excentre arm center of rotation (255, 355), wherein the holding member (210, 310) is arranged distanced (D) along a first axis (A1) from the excentre arm center of rotation (255, 355), the first axis (A1) forming an acute angle (A) with the holding plane (A2) when in the locking position.

A binding machine includes: a first main unit that has a pair of grips that an operator can hold; a second main unit that has a curl guide for curling a wire around an object to be bound, and a twisting unit including a twisting shaft to twist the curled wire; and a link unit that links the first main unit and the second main unit. The grips are provided on either side of the axis line of the link unit or an extended line of the axis line as seen from the operator side when the operator is holding the grips to manipulate.

It provides a reinforcing bar binding machine which reduces restrictions on a moving direction of the reinforcing bar binding machine in an operation of pulling out a reinforcing bar bound with a wire. A reinforcing bar binding machine (1A) includes a curl guide unit (5A) that winds a wire (W) around a reinforcing bar (S), a wire feeding unit (3A) that feeds the wire (W), and a binding unit (7A) that twists crossing portions between one end and the other end of the wire (W) wound around the reinforcing bar (S). The curl guide unit (5A) includes a first guide unit (50) that curls the wire (W) fed by the feeding unit (3A) and a second guide unit (51) that guides the wire (W) fed from the first guide unit (50) to the binding unit (7A), and the second guide unit (51) includes a fixed guide unit (54) that restricts a position in a radial direction of the wire (W) wound around the reinforcing bar (S) and a movable guide unit (55) that restricts a position in an axial direction of the wire (W) wound around the reinforcing bar (S).