End machine

Abstract

To provide a binding machine capable of eliminating deviation of a wire from a transport path, wire clogging, wire buckling, etc., in a member movable to a position on a wire feed track.SOLUTION: A reinforcing bar binding machine 1A comprises: a feed part 3A capable of feeding a wire W and winding it around a reinforcing-bar S; a functional part variable between a first position located on a feed track of the wire W and a second position deviated from a position on the feed track; and a control part for moving the functional part to the first position or the second position, wherein the control part moves the functional part to the second position after the end of a bonding operation or when the feed failure of the wire W occurs, and the functional part is either a regulating member 42 for guiding the wire W in contact with the wire W, a retraction mechanism 43 for attaching a member constituting the regulating member 42, or a gripping part 70 engaged with the wire W.SELECTED DRAWING: Figure 4B

Description

[Technical field]

[0001] The present disclosure relates to a strapping machine. [Background technology]

[0002] Conventionally, rebar binding machines have been used in which the wire fed from the feed section is wound around the rebar in a loop using a guide section such as a guide pin, and the wire is then grasped and twisted with a binding section including a hook, thereby wrapping the rebar with the wire and binding it (see, for example, Patent Document 1).

[0003] The rebar binding machine includes members that are movable between a position on the wire feed track and a position retracted from the feed track. Examples of the members include a guide pin and a retraction mechanism that give a curl to the wire W, and a twisting unit that grips and twists the wire. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2017 / 014266 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in conventional rebar binding machines, the retraction mechanism and the return section move on the wire feed track, so the wire may hit the retraction mechanism and the return section when the wire is fed. In such cases, problems such as the wire deviating from the transport path, the wire becoming clogged, or the wire buckling may occur.

[0006] Therefore, in order to solve the above problems, the present invention aims to provide a binding machine that can prevent deviation of the wire from the transport path, wire clogging, wire buckling, etc., using a member that can be moved to a position on the wire feed track. [Means for solving the problem]

[0007] According to the present disclosure, a wire feeder includes a feed unit capable of feeding a wire and winding it around a material to be bound, a functional unit that can be moved between a first position located on a wire feed track and a second position that is off the position on the wire feed track, and a control unit that moves the functional unit to the first position or the second position, and the control unit moves the functional unit to the second position after the end of a bundling operation or when a wire feed failure occurs, and the functional unit contacts the wire to wind the wire. The wire fed by the feeding section is curled. A regulating portion that guides the wire, a retracting mechanism to which a member that constitutes the regulating portion is attached, or a wire that engages the wire and rotating to twist the wire wound around the bundle. A strapping machine is provided, the strapping machine being either a gripper or a fastener. Effect of the Invention

[0008] According to the present disclosure, in a predetermined state, the functional part is in a second position that is off-center from its position on the feed track, so that the wire can be removed from the functional part even if deviation from the wire transport path, clogging of the wire, buckling of the wire, etc. occurs. [Brief description of the drawings]

[0009] [Figure 1A] FIG. 1 is a side view of a reinforcing bar binding machine according to a first embodiment. [Figure 1B] FIG. 1 is a side view of a reinforcing bar binding machine according to a first embodiment. [Figure 1C] FIG. 1 is a side view of a reinforcing bar binding machine according to a first embodiment. [Figure 1D] FIG. 1 is a side view of a reinforcing bar binding machine according to a first embodiment. [Figure 1E] FIG. 1 is a top view of a reinforcing bar binding machine according to a first embodiment. [Figure 2A] FIG. 1 is a front view of a reinforcing bar binding machine according to a first embodiment. [Figure 2B] FIG. 2 is a rear view of the reinforcing bar binding machine according to the first embodiment. [Diagram 3] FIG. 2 is a side view of the internal configuration of the reinforcing bar binding machine according to the first embodiment. [Figure 4A] FIG. 2 is a side view of the inside of the reinforcing bar binding machine according to the first embodiment. [Figure 4B] FIG. 2 is a side view of the inside of the reinforcing bar binding machine according to the first embodiment. [Figure 4C] FIG. 2 is a side view of the inside of the reinforcing bar binding machine according to the first embodiment. [Diagram 5] FIG. 2 is a diagram showing a feed section of the reinforcing bar binding machine according to the first embodiment. [Figure 6A] FIG. 2 is a diagram showing a regulating part of the reinforcing bar binding machine according to the first embodiment. [Figure 6B] FIG. 2 is a diagram showing a regulating part of the reinforcing bar binding machine according to the first embodiment. [Figure 7] 1 is a block diagram showing a hardware configuration of a reinforcing bar binding machine according to a first embodiment. [Figure 8] 4 is a flowchart showing an example of the operation of the reinforcing bar binding machine according to the first embodiment. [Figure 9] 6 is a flowchart showing an example of the operation of the reinforcing bar binding machine according to the first modified example. [Figure 10] FIG. 13 is a block diagram showing a hardware configuration of a reinforcing bar binding machine according to a second modified example. [Figure 11] 10 is a flowchart showing an example of the operation of the reinforcing bar binding machine according to the second modified example. [Figure 12] FIG. 13 is a block diagram showing a hardware configuration of a reinforcing bar binding machine according to a third modified example. [Figure 13] 13 is a flowchart showing an example of the operation of the reinforcing bar binding machine according to the third modified example. [Figure 14] FIG. 11 is a perspective view of a reinforcing bar binding machine according to a second embodiment. [Figure 15] FIG. 11 is a side view of the internal configuration of a reinforcing bar binding machine according to a second embodiment. [Figure 16] FIG. 11 is a block diagram showing a hardware configuration of a reinforcing bar binding machine according to a second embodiment. [Figure 17] 10 is a flowchart showing an example of the operation of the reinforcing bar binding machine according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0011] [First embodiment] (Example of the configuration of the rebar binding machine 1A) 1A, 1B, 1C, and 1D are side views showing an example of the overall configuration of the reinforcing bar binding machine 1A according to the first embodiment, FIG. 1E is a top view showing an example of the overall configuration of the reinforcing bar binding machine 1A according to the first embodiment, FIG. 2A is a front view showing an example of the overall configuration of the reinforcing bar binding machine 1A according to the first embodiment, and FIG. 2B is a rear view showing an example of the overall configuration of the reinforcing bar binding machine 1A according to the first embodiment. FIG. 3 is a side view showing an example of the internal configuration of the reinforcing bar binding machine 1A according to the first embodiment, and FIGS. 4A, 4B, and 4C are side views showing the main parts of the internal configuration of the reinforcing bar binding machine 1A according to the first embodiment. FIG. 5 is a diagram showing a feed unit 3A of the reinforcing bar binding machine 1A according to the first embodiment. FIGS. 6A and 6B are diagrams showing a regulating unit 4A of the reinforcing bar binding machine 1A according to the first embodiment.

[0012] As shown in Figures 1A to 1E, the first embodiment of the reinforcing bar binding machine 1A comprises a first main body portion 301 configured to be able to be held by hand, a second main body portion 302 equipped with a mechanism for binding reinforcing bars S with wire W, and a long connecting portion 303 connecting the first main body portion 301 and the second main body portion 302.

[0013] The first main body 301 includes a pair of handles 304hL and 304hR that can be held by an operator. As shown in FIG. 2B, the first main body 301 also includes a power switch 16 for turning on and off the power to the rebar binding machine 1A, and an operation unit 18 having a dial or the like for adjusting the binding force.

[0014] The exterior of the second main body 302 is made of resin. As shown in Figs. 3 and 4A, the second main body 302 includes a housing 2A that rotatably houses the wire reel 20 around which the wire W is wound, and a feed section 3A that feeds the wire W wound around the wire reel 20 housed in the housing 2A. The second main body 302 also includes a restricting section 4A that imparts a curl to the wire W fed by the feed section 3A, and a guide section 5A that guides the wire W that has been curled by the restricting section 4A. The second main body 302 also includes a cutting section 6A that cuts the wire W, a twisting section 7A that twists the wire W, and a driving section 8A that drives the cutting section 6A, the twisting section 7A, and the like.

[0015] As shown in Fig. 1A and other figures, the reinforcing bar binding machine 1A is provided with a guide unit 5A on one side of the second main body unit 302. The reinforcing bar binding machine 1A has a configuration in which the guide unit 5A and the handle units 304hL and 304hR are elongated compared to a reinforcing bar binding machine not provided with the connecting unit 303, by connecting the first main body unit 301 and the second main body unit 302 with the connecting unit 303. In this embodiment, the side on which the guide unit 5A is provided is defined as the front.

[0016] The storage section 2A is configured to be able to detachably attach and support the wire reel 20. The feed section 3A is provided with a pair of feed gears 30 as a feed member. With the wire W sandwiched between the pair of feed gears 30, the feed section 3A feeds the wire W by rotating the feed gears 30 with a feed motor 33. Depending on the rotation direction of the feed gears 30, the feed section 3A can feed the wire W in both the forward direction indicated by arrow F and the reverse direction indicated by arrow R.

[0017] 5, the feed section 3A includes a pair of first and second feed gears 30L and 30R that feed the wire W while clamping it by rotating, and a displacement member 36 that displaces the second feed gear 30R in a direction to move toward or away from the first feed gear 30L. The second feed gear 30R is rotatably supported by a shaft 300R at one end of the displacement member 36. The displacement member 36 is rotatably supported by a support member 37 of the feed section 3A at the other end with a shaft 36a as a fulcrum.

[0018] The displacement member 36 is pressed by a spring (not shown) and displaced in the direction of arrow V1 by rotation about the shaft 36a as a fulcrum. As a result, the second feed gear 30R is pressed toward the first feed gear 30L by the force of the spring 38. As shown in Fig. 1A etc., the second main body 302 is provided with a release lever 39 for performing an operation of moving the second feed gear 30R toward and away from the first feed gear 30L via the displacement member 36.

[0019] The feed section 3A includes a feed motor 33 that drives one of the first feed gear 30L and the second feed gear 30R, in this example the first feed gear 30L, and a driving force transmission mechanism 34 that transmits the driving force of the feed motor 33 to the first feed gear 30L.

[0020] The driving force transmission mechanism 34 includes a small gear 33a attached to the shaft of the feed motor 33 and a large gear 33b meshing with the small gear 33a. The driving force transmission mechanism 34 also includes a small feed gear 34a to which the driving force is transmitted from the large gear 33b and which meshes with the first feed gear 30L.

[0021] The first feed gear 30L rotates as the rotational motion of the feed motor 33 is transmitted to it via a driving force transmission mechanism 34. The second feed gear 30R receives the rotational motion of the first feed gear 30L and rotates following the first feed gear 30L.

[0022] In the feed section 3A, the rotation direction of the feed motor 33 is switched between forward and reverse, whereby the rotation direction of the first feed gear 30L and the second feed gear 30R is switched, and the feed direction of the wire W is switched between forward and reverse.

[0023] 4A and other figures, the cutting unit 6A is provided downstream of the feeding unit 3A with respect to the forward feeding of the wire W indicated by the arrow F. The cutting unit 6A includes a fixed blade unit 60 and a movable blade unit 61 that cuts the wire W in cooperation with the fixed blade unit 60. The cutting unit 6A also includes a transmission mechanism 62 that transmits power from the drive unit 8A to the movable blade unit 61.

[0024] The fixed blade portion 60 has an opening 60a through which the wire W passes. The movable blade portion 61 cuts the wire W passing through the opening 60a of the fixed blade portion 60 by a rotational movement with the fixed blade portion 60 as a fulcrum.

[0025] The restricting unit 4A includes first to third restricting members that contact the wire W at multiple locations (at least three locations in this example) along the feeding direction of the wire W fed by the feed unit 3A, thereby forming a curl in the wire W along the feed path Wf of the wire W shown by the dashed line in Fig. 4B. The fixed blade unit 60 described above functions as a first restricting member and forms a curl in the wire W.

[0026] The regulating unit 4A includes a regulating member 42 as a second regulating member downstream of the fixed blade unit 60 with respect to the forward feeding of the wire W indicated by the arrow F, and includes a regulating member 45 as a third regulating member downstream of the regulating member 42. The regulating members 42 and 45 are each formed of a cylindrical member, and the wire W comes into contact with its outer circumferential surface.

[0027] In the restricting portion 4A, the restricting members 42 and 45, which are constituted by the fixed blade portion 60, guide pins, etc., are arranged on a curve in accordance with the feed path Wf of the wire W, which is a substantially circular spiral. The fixed blade portion 60 has an opening 60a through which the wire W passes, which is provided on the feed path Wf of the wire W. The restricting member 42 is provided radially inward with respect to the feed path Wf of the wire W. The restricting member 45 is provided radially outward with respect to the feed path Wf of the wire W.

[0028] As a result, the wire W fed by the feed section 3A passes through the fixed blade section 60, the regulating member 42 and the regulating member 45 while coming into contact with them, so that the wire W is curled along the feed path Wf of the wire W.

[0029] As shown in Figure 6A, etc., within the second main body portion 302, a space 102 is provided through which the wire W passes when binding the reinforcing bar S with the wire W, and within which the gripping portion 70 of the twisting portion 7A, the operating portion 71, and the functional portion 40 located on the feed track of the wire W, etc., operate.

[0030] As shown in FIG. 4A and other figures, the functional unit 40 includes a regulating member 42 constituting the regulating unit 4A described above, and a retracting mechanism 43 to which the regulating member 42 is attached. The retracting mechanism 43 is connected to a transmission member 44 that operates in conjunction with the moving member 83 of the driving unit 8A, and is configured to be variable in position with respect to the feed track of the wire W. Specifically, the regulating member 42 and the retracting mechanism 43 are located at a first position on the feed track of the wire W that contacts the wire W, as shown in FIG. 6A, during an operation in which the wire W is fed in the forward direction by the feed unit 3A to give a curl to the wire W. In addition, the regulating member 42 and the retracting mechanism 43 move to a second position that is out of the feed track of the wire W that does not contact the wire W, as shown in FIG. 6B, before an operation in which the wire W is fed in the reverse direction and wound around the reinforcing bar S, as shown in FIG. 4C, is performed.

[0031] As shown in FIG. 4A etc., the guide portion 5A includes a first guide 51 that guides the wire W, and a second guide 52 that guides the wire W that has been curled by the regulating portion 4A and the first guide 51 to the twisting portion 7A.

[0032] The first guide 51 is attached to the front end of the second main body 302 and extends in a first direction, which is the front-rear direction indicated by the arrow A1. The first guide 51 includes a groove 51h having a guide surface 51g with which the wire W fed by the feed unit 3A comes into sliding contact.

[0033] In the first guide 51, when the side attached to the second main body portion 302 is the base end side and the side extending in the first direction from the second main body portion 302 is the tip side, the base end side is attached to the second main body portion 302 by a screw or the like.

[0034] The first guide 51 has the restricting member 42 provided on the base end side and the restricting member 45 provided on the tip end side. In the first guide 51, a gap through which the wire W can pass is formed between a guide surface 51g and the outer circumferential surface of the restricting member 42. In the first guide 51, a part of the outer circumferential surface of the restricting member 45 protrudes onto the guide surface 51g.

[0035] 1A, 4A, etc., the second guide 52 is attached to the front end of the second main body 302. The second guide 52 is provided facing the first guide 51 in a second direction indicated by an arrow A2, which is an up-down direction perpendicular to the first direction. A predetermined distance is provided between the first guide 51 and the second guide 52 along the second direction, and an insertion / removal opening 53 through which the reinforcing bar S is inserted and removed is formed between the first guide 51 and the second guide 52.

[0036] The second guide 52, in conjunction with a pair of contact members described later, moves about an axis 52b to move between a first position in which the distance between the tip end 52c of the second guide 52 and the end 51c of the first guide 51 is a first distance, as shown in FIG. 4A, and a second position in which the distance between the end 52c of the second guide 52 and the end 51c of the first guide 51 is a second distance shorter than the first distance, as shown in FIG. 4B.

[0037] When the second guide 52 is in the second position, the distance between the end 52c of the second guide 52 and the end 51c of the first guide 51 is open. When the second guide 52 is in the first position, the distance between the end 52c of the second guide 52 and the end 51c of the first guide 51 is widened, making it easier to insert the rebar into the insertion / removal opening 53 between the first guide 51 and the second guide 52.

[0038] The second guide 52 is biased in a direction to move to the first position by a biasing member 54 formed of a torsion coil spring or the like, and is maintained in a state where it has been moved to the first position.

[0039] The second guide 52 includes a receiving portion 56 that receives the movement of a pair of contact members (described later) via a link portion. The receiving portion 56 is configured with a surface perpendicular to the lower surface of the second guide 52 or a surface inclined with respect to a direction perpendicular to the lower surface of the second guide 52.

[0040] 1A to 1D, the reinforcing bar binding machine 1A includes a first contact member 9AL and a second contact member 9AR against which the reinforcing bar S inserted into the insertion / removal opening 53 between a first guide 51 and a second guide 52 is abutted. The first contact member 9AL operates in conjunction with the abutting operation against the reinforcing bar S, and turns on a first sensor 12L, which will be described later. The second contact member 9AR operates in conjunction with the abutting operation against the reinforcing bar S, and turns on a second sensor 12R, which will be described later.

[0041] The rebar binding machine 1A also includes a first link member 96L that transmits the movement of the first contact member 9AL to the second guide 52, and a second link member 96R that transmits the movement of the second contact member 9AR to the second guide 52. The first link member 96L and the second link member 96R are rotatably supported by a shaft 96A. When the worker abuts the first contact member 9AL and the second contact member 9AR against the rebar S, the first link member 96L and the second link member 96R rotate about the shaft 96A as a fulcrum, and the second guide 52 moves from the first position to the second position.

[0042] 3, 4A, etc., the twisting unit 7A includes a gripping unit 70 with which the wire W engages, and an operating unit 71 that operates the gripping unit 70. The gripping unit 70 has a first passage P1 through which the wire W fed to the cutting unit 6A by the feeding unit 3A passes, and a second passage P2 through which the wire W that has been given a curl by the restricting unit 4A and guided to the twisting unit 7A by the guide unit 5A passes. The gripping unit 70 rotates by the operation of the operating unit 71, thereby twisting the wire W wound around the reinforcing bar S.

[0043] As shown in Fig. 3, Fig. 4A, etc., the driving unit 8A includes a torsion motor 80 that drives the torsion unit 7A, etc., a reducer 81 that reduces speed and amplifies torque, a rotating shaft 82 that is driven to rotate by the torsion motor 80 via the reducer 81, and a moving member 83 that transmits driving force to the cutting unit 6A and the regulating member 42. The torsion unit 7A and the driving unit 8A are arranged such that the rotating shaft 82 and the rotation centers of the operating unit 71 and the gripping unit 70 are coaxially arranged. The rotating shaft 82 and the rotation centers of the operating unit 71 and the gripping unit 70 are referred to as the axis Ax. In this example, the first direction indicated by the arrow A1 is the direction along the axis Ax.

[0044] The driving unit 8A moves the operating unit 71 along the axial direction of the rotating shaft 82 by the rotational movement of the rotating shaft 82. As the operating unit 71 moves along the axial direction of the rotating shaft 82, the gripping unit 70 holds the tip side of the wire W guided to the twisting unit 7A by the guide unit 5A.

[0045] In the driving unit 8A, the moving member 83 moves along the axial direction of the rotating shaft 82 in conjunction with the movement of the operating unit 71 along the axial direction of the rotating shaft 82. The movement of the moving member 83 is transmitted to the retracting mechanism 43 via the transmitting member 44, and the restricting member 42 and the retracting mechanism 43 move from a first position where they are in contact with the wire to a second position where they are not in contact with the wire. Thereafter, the wire W is pulled back in the opposite direction by the reverse rotation of the twisting motor 80, so that the wire W is brought into close contact with the periphery of the reinforcing bar S. Furthermore, as the operating unit 71 moves along the axial direction of the rotating shaft 82, the movement of the moving member 83 is transmitted to the movable blade unit 61 by the transmitting mechanism 62, and the movable blade unit 61 is actuated to cut the wire W.

[0046] The driving unit 8A rotates the operating unit 71, which has been moved along the axial direction of the rotating shaft 82, by the rotational movement of the rotating shaft 82. The operating unit 71 rotates about the axis of the rotating shaft 82, causing the gripping unit 70 to twist the wire W.

[0047] (Example of hardware configuration for rebar binding machine 1A) Fig. 7 is a block diagram showing an example of a hardware configuration of the reinforcing bar binding machine 1A. As shown in Fig. 7, the reinforcing bar binding machine 1A includes a control unit 10, a first sensor 12L, a second sensor 12R, a memory unit 14, a power switch 16, an operation unit 18, a twisting motor 80, and a feed motor 33.

[0048] The control unit 10 includes a CPU (Central Processing Unit) that functions as an arithmetic processing device, and controls the overall operation of the reinforcing bar binding machine 1A in accordance with various programs stored in the storage unit 14 and the like.

[0049] The first sensor 12L and the second sensor 12R are composed of, for example, a magnetic sensor, and detect a detection part (not shown) whose position is displaced by the abutting action of the first contact member 9AL and the second contact member 9AR against the reinforcing bar S, and output an ON signal to the control unit 10.

[0050] The storage unit 14 includes a ROM (Read Only Memory), a RAM (Random Access Memory), a semiconductor memory element, a hard disk, an optical disk, etc. The storage unit 14 stores programs, calculation parameters, various data, etc. that the control unit 10 uses during the bundling operation.

[0051] The power switch 16 outputs an ON signal based on the power being turned on by an operator and an OFF signal based on the power being turned off by an operator to the control unit 10. The operation unit 18 outputs a binding force signal based on the level of binding force adjusted by the operator using a dial to the control unit 10.

[0052] The control unit 10 outputs a drive signal for feeding the wire W in the forward and reverse directions to the feed motor 33 via a drive circuit (not shown) based on the ON signals supplied from the first sensor 12L and the second sensor 12R. The feed motor 33 is driven based on the drive signal supplied from the control unit 10 to rotate the first feed gear 30L and the second feed gear 30R forward and reverse.

[0053] Based on the ON signals supplied from the first sensor 12L and the second sensor 12R, the control unit 10 outputs a drive signal for advancing and retracting the operating unit 71 to the torsion motor 80 via a drive circuit (not shown). The torsion motor 80 is driven based on the bundling signal supplied from the control unit 10 to advance or retract the operating unit 71.

[0054] (Issues when the functional part 40 is the regulating member 42 and the retracting mechanism 43 of the regulating part 4A) Here, a problem that occurs in the retraction mechanism 43, which is one of the functional parts 40, when reinforcing bars are fastened using a conventional reinforcing bar fastening machine will be described. Note that since the configuration of the conventional reinforcing bar fastening machine and the configuration of the reinforcing bar fastening machine 1A of the present embodiment have some common parts, for convenience, the reinforcing bar fastening machine 1A shown in Fig. 1A etc. will be used for the description.

[0055] When the bundling operation is started, the actuation unit 71 advances by being driven by the twisting motor 80, and accordingly, the wire W is gripped by the gripping unit 70, and then the restricting member 42 and the retraction mechanism 43 retract from the first position to the second position. The wire W is then pulled back so that the wire W is wound around the reinforcing bar S, and after the wire W is cut, the actuation unit 71 rotates around the rotating shaft 82 to perform the twisting operation of the wire W. The twisting unit 7A is biased backward by a compression spring arranged inside the rotating shaft 82, and can move forward and backward slightly by the expansion and contraction of the compression spring.

[0056] During the twisting of the wire W, the wire W is tightened, and the loop diameter of the wire W becomes smaller (the length of the twisting allowance becomes shorter), so that the gripping part 70 and the operating part 71 are pulled forward. As a result, the compression spring is compressed, and the gripping part 70 and the operating part 71 stop at a position where they have advanced toward the reinforcing bar S.

[0057] Incidentally, after the rebar S is bound with the wire W, in a normal case, as the operating part 71 retracts, the gripping part 70 releases the wire W, and the gripping part 70 and the operating part 71 return to their initial positions. However, if the binding operation does not end normally (in the case of an abnormality), as the operating part 71 retracts, the gripping part 70 moves to release the wire W, but a part of the wire W after binding may become caught in the gripping part 70.

[0058] In this case, the actuation part 71 retreats relative to the grip part 70 as the torsion motor 80 is driven in the reverse direction, but the grip part 70 and the actuation part 71 remain in a position that is further forward than the initial position due to the compression of the spring described above. The restriction member 42 and the retraction mechanism 43 depend on the positions of the grip part 70 and the actuation part 71, and are therefore held in the second position.

[0059] In this state, when an operator is performing an operation to release the caught wire W, the first contact member 9AL and the second contact member 9AR may unintentionally hit the reinforcing bar S. In this case, the bundling operation is started and the wire W is fed in the forward direction by driving the feed motor 33, but depending on the feeding attitude of the wire W, the wire W (Wa) shown by the thick line may deviate from the conveying path and be inserted into the gap between the retraction mechanism 43 and the first guide 51 as shown in FIG. 4B.

[0060] At this timing, when the wire W after bundling is released from the gripping portion 70, the compression spring expands, causing the gripping portion 70 and the operating portion to retreat and return to their initial positions. Accordingly, the restricting member 42 and the retracting mechanism 43, which depend on the position of the operating portion 71, move from the second position to the first position. As a result, the gap between the first guide 51 and the retracting mechanism 43 is blocked, so that the wire W becomes sandwiched between the first guide 51 and the retracting mechanism 43, which causes a problem that the operator cannot easily remove the wire W from the first guide 51, etc.

[0061] Therefore, in this embodiment, by executing the control shown in FIG. 8 below, it becomes possible to easily remove the wire W from the first guide 51 and the like.

[0062] (Example of control for rebar binding machine 1A) FIG. 8 is a flowchart showing an example of control of the reinforcing bar binding machine 1A when the wire W is pinched between the first guide 51 and the retraction mechanism 43.

[0063] First, when an operator confirms that the wire W is caught between the first guide 51 and the retraction mechanism 43, the operator operates the release lever 39. This causes the second feed gear 30R to move away from the first feed gear 30L, and the meshing between the first feed gear 30L and the second feed gear 30R is released.

[0064] 8, in step S100, an operator performs an operation to turn on the first contact member 9AL and the second contact member 9AR. The first contact member 9AL and the second contact member 9AR can be turned on by, for example, butting the first contact member 9AL against a reinforcing bar S. It is not necessary to turn on both the first contact member 9AL and the second contact member 9AR, and it is sufficient that at least one of the contact members is turned on. The control unit 10 determines whether an on signal based on the on operation of the first contact member 9AL and the second contact member 9AR is supplied from at least one of the first sensor 12L and the second sensor 12R.

[0065] In step S110, when the control unit 10 determines that an ON signal is supplied from at least one of the first sensor 12L and the second sensor 12R, the control unit 10 starts the bundling operation. Specifically, the control unit 10 drives the feed motor 33 and the twisting motor 80. At this time, the meshing between the first feed gear 30L and the second feed gear 30R is released, so the wire W is in an idling state, the load current of the feed motor 33 does not increase, and the idling operation is performed. Therefore, the control unit 10 determines that the wire W is not being fed normally from the output result of the load current of the feed motor 33, increments the continuous idling counter N (N=1), and stores the result in the storage unit 14. When a series of idling operations is completed, the control unit 10 stops the feed motor 33 and the twisting motor 80. The operation unit 71 and the like return to their initial positions.

[0066] In this embodiment, the empty bundling operation is performed, for example, three times by the operator. The number of times the empty bundling operation is not limited to three, and may be one or more. By performing the empty bundling operation multiple times, it is possible to accurately determine that empty feeding of the wire W has occurred. It is also possible to set the empty bundling operation to one time, since a sensor for detecting whether or not the release lever 39 is operated can be provided and, if the operation of the release lever 39 is detected by the sensor, it can be confirmed in advance that empty feeding of the wire W will occur.

[0067] In step S120, the control unit 10 judges whether the blank bundling operation has been performed three times in succession and the continuous blank beating counter N has reached N = 3. If the control unit 10 judges that the continuous blank beating counter N is not N = 3, the control unit 10 returns to step S100 and executes the blank bundling operation of steps S100 and S110 described above.

[0068] On the other hand, if it is determined that the continuous blank firing counter N is 3, the process proceeds to step S130. In step S130, the control unit 10 drives the feed motor 33 to rotate the first feed gear 30L, and drives the torsion motor 80 to advance the operating unit 71. As the operating unit 71 advances, the regulating member 42 and the retracting mechanism 43 move from the first position to the second position.

[0069] In step S140, the control unit 10 stops the twisting motor 80 at the position where the operating unit 71 has advanced, and also stops the feed motor 33, thereby stopping the empty bundling operation. As a result, the regulating member 42 and the retracting mechanism 43 are stopped at the second position, the retracting mechanism 43 is separated from the first guide 51, and a gap is provided between the first guide 51 and the retracting mechanism 43.

[0070] Since a gap is provided between the first guide 51 and the retraction mechanism 43, the worker can easily remove the wire W caught between the first guide 51 and the like. When the work of removing the wire W is completed, the worker turns off the power switch 16. When the power switch 16 is turned on again, the control unit 10 executes initialization to return the operating unit 71 and the like to their initial positions, and thereafter, when the first contact member 9AL and the like are turned on, the bundling operation is executed. Note that the bundling operation can be resumed by a control other than the on / off of the power switch 16.

[0071] (When the functional portion 40 is the grip portion 70) The gripping part 70 includes a hook that opens and closes in conjunction with the operation of the operating part 71, and is configured to be movable between a first position where the hook is open and a second position where the hook is closed. Note that the second position includes not only a completely closed state, but also a state slightly more closed than the first position.

[0072] Here, when the wire W is fed in the forward direction to wind the wire W around the reinforcing bar S, the wire W passes through a first passage P1 and a second passage P2 shown in Fig. 6A etc. between the hooks of the gripping unit 70 in the first position. However, depending on the feeding posture of the wire W, etc., the wire W may come into contact with the hooks, causing deviation of the wire W from the transport path, clogging of the wire W, buckling of the wire W, etc., resulting in a jam.

[0073] In such a case, the control unit 10 can move the hook of the gripper 70 from the first position to the second position by controlling the actuator 71 to move forward and backward. Whether or not a feeding failure of the wire W has occurred can be determined, for example, according to a fluctuation in the load current of the feed motor 33. This allows the entanglement of the wire W to be released and the jam to be eliminated. Alternatively, a predetermined rotation angle of the gripper 70 may be defined as the first position, and a rotation angle obtained by rotating the gripper 70 around the rotation shaft 82 by a predetermined angle from the first position may be defined as the second position, and when a feeding failure of the wire W has occurred, the gripper 70 may be controlled to rotate from the first position to the second position.

[0074] As described above, according to the first embodiment, even if a feeding failure of the wire W occurs in the functional unit 40 including the retraction mechanism 43, the retraction mechanism 43 can be set to the second position by executing a predetermined state, for example, the control shown in Fig. 8. This creates a gap between the retraction mechanism 43 and the first guide 51, so that the wire W can be easily removed from between the retraction mechanism 43 and the first guide 51, and jamming of the wire W can be eliminated.

[0075] Furthermore, according to the first embodiment, for example, if poor feeding of the wire W occurs at the gripping portion 70, the gripping portion 70 can be set to the second position, so that the wire W can be easily removed from the gripping portion 70, etc.

[0076] [First Modification] Next, a first modified example will be described in which the functional part 40 is set to the second position by a means different from the control in Fig. 8. In the following, a case in which the functional part 40 is the restriction part 4A will be described.

[0077] Fig. 9 is a flowchart showing an example of control of the reinforcing bar binding machine 1A when the wire W is pinched between the first guide 51 and the retraction mechanism 43. Note that detailed explanations of processes that are the same as or similar to the control explained in Fig. 8 will be omitted.

[0078] 9, in step S200, the control unit 10 determines whether or not an ON signal has been supplied from the first sensor 12L, etc. by turning on the first contact member 9AL, etc. If an ON signal has been supplied, the process proceeds to step S210.

[0079] In step S210, the control unit 10 starts the bundling operation by driving the feed motor 33 and the twisting motor 80. As a result, the feed unit 3A feeds the wire W, the twisting unit 7A grasps and twists the wire W, and the reinforcing bars S are bound with the wire W.

[0080] In step S220, the control unit 10 judges whether the bundling operation is completed. If it is judged that the bundling operation is completed, the process proceeds to step S230. At this time, it is assumed that the gripping and twisting operation of the wire W is completed, and the operating unit 71 is positioned at a position advanced toward the reinforcing bar S side.

[0081] In step S230, the control unit 10 executes a first mode in which the actuating unit 71 is stopped at a position (advance position) advanced from the initial position by driving the torsion motor 80 in the reverse rotation to cause the actuating unit 71 to retreat and to be stopped at a position where the gripping unit 70 releases the wire W. This allows the regulating member 42 and the retracting mechanism 43, which operate in conjunction with the actuating unit 71, to be stopped at a second position spaced apart from the first guide 51. Alternatively, after the bundling operation is completed, the actuating unit 71 may be controlled to retreat and return to the initial position, and then to advance the actuating unit 71 to stop it at the advance position.

[0082] Note that a configuration may be adopted in which the first mode is set as a default setting, and a second mode in which the retraction mechanism 43 is set to the first position after bundling is completed is selectable. The first and second modes may be manually switched by an operator, or may be automatically switched in response to the occurrence of a feeding failure of the wire W, etc.

[0083] According to the first modified example, for example, even if a piece of the wire W is inserted between the retracting mechanism 43 in the second position and the first guide 51 after bundling the reinforcing bars S with the wire W, the retracting mechanism 43 stops in the second position after bundling, so the piece of the wire W is not caught between the retracting mechanism 43 and the first guide 51 and can be easily pulled out. This makes it possible to prevent jamming.

[0084] [Second modified example] Next, a second modified example will be described in which the functional part 40 is set to the second position by a means different from the control in Fig. 8. In the following, a case in which the functional part 40 is the restriction part 4A will be described.

[0085] (Example of hardware configuration for rebar binding machine 1Aa) 10 is a block diagram showing an example of the hardware configuration of the reinforcing bar binding machine 1Aa. Note that components having substantially the same functional configuration as those of the reinforcing bar binding machine 1A according to the first embodiment are given the same reference numerals and will not be described again.

[0086] As shown in FIG. 10, the rebar binding machine 1Aa includes a control unit 10, a first sensor 12L, a second sensor 12R, a memory unit 14, a jam detection sensor 11, a power switch 16, an operation unit 18, a twisting motor 80, and a feed motor 33.

[0087] The jam detection sensor 11 is provided on the transport path of the wire W and is composed of, for example, a reflective or transmissive optical sensor. The control unit 10 determines whether or not a jam has occurred on the transport path of the wire W based on state information of the wire W supplied from the jam detection sensor 11. The jam detection sensor 11 may also be configured to detect whether or not a jam has occurred based on fluctuations in the current values ​​of the feed motor 33 and the twist motor 80.

[0088] Fig. 11 is a flowchart showing an example of control of the reinforcing bar binding machine 1Aa when the wire W is pinched between the first guide 51 and the retraction mechanism 43. Note that detailed explanations of processes that are the same as or similar to the control explained in Fig. 8 will be omitted.

[0089] 11, in step S300, the control unit 10 determines whether or not an ON signal has been supplied from the first sensor 12L, etc. by turning on the first contact member 9AL, etc. If an ON signal has been supplied, the process proceeds to step S310.

[0090] In step S310, the control unit 10 starts the bundling operation. As a result, the wire W is fed by the feeding unit 3A, and the wire W is gripped and twisted by the twisting unit 7A, so that the reinforcing bars S are bound with the wire W.

[0091] In step S320, the control unit 10 determines whether or not a jam has occurred in the transport path of the wire W based on the state information of the wire W from the jam detection sensor 11. If the control unit 10 determines that a jam has occurred, the process proceeds to step S330.

[0092] In step S330, the control unit 10 executes a first mode in which the operation unit 71 is stopped at the forward position. As a result, the regulating member 42 and the retracting mechanism 43, which are linked to the operation unit 71, are stopped at a second position separated from the first guide 51.

[0093] According to the second modified example, even if a jam occurs in the first guide 51 and the retraction mechanism 43 during the bundling operation, the retraction mechanism 43 can be moved to the second position upon detection of the jam by the jam detection sensor 11, so that the wire W caught between the retraction mechanism 43 and the first guide 51 can be easily pulled out and the jam can be cleared. Note that the control according to the second modified example can also be applied to the case where a jam occurs in the gripping unit 70, which is an example of the functional unit 40.

[0094] [Third modified example] Next, a third modified example will be described in which the functional part 40 is set to the second position by a means different from the control in Fig. 8. In the following, a case in which the functional part 40 is the restricting part 4A will be described.

[0095] (Example of hardware configuration for rebar binding machine 1Ab) 12 is a block diagram showing an example of the hardware configuration of the reinforcing bar binding machine 1Ab. Note that components having substantially the same functional configuration as those of the reinforcing bar binding machine 1A according to the first embodiment are given the same reference numerals and will not be described again.

[0096] 12, the rebar binding machine 1Ab includes a control unit 10, a first sensor 12L, a second sensor 12R, a memory unit 14, a power switch 16, an operation unit 18, a movement switch 19, a torsion motor 80, a feed motor 33, and a movement mechanism 13. In the third modified example, the regulating member 42 and the retracting mechanism 43 are configured to be independently movable between the first position and the second position by the movement mechanism 13 without being linked to a transmission member 44.

[0097] The movement switch 19 is provided on at least one side of the first body portion 301 and the second body portion 302, and is configured as a known switch such as a push button, a slide switch, or a seesaw switch. When the movement switch 19 is operated by an operator, it generates an operation signal and outputs it to the control unit 10. The control unit 10 drives the movement mechanism 13, which is configured as, for example, a solenoid, to move the restricting member 42 and the retraction mechanism 43 to the second position. Of course, the retraction mechanism 43 and the like may be configured to be linked with the transmission member 44, and the torsion motor 80 may be driven by the operation of the movement switch 19 to move the retraction mechanism 43 and the like via the transmission member 44.

[0098] Fig. 13 is a flowchart showing an example of control of the reinforcing bar binding machine 1Ab when the wire W is pinched between the first guide 51 and the retraction mechanism 43. Note that detailed explanations of processes that are the same as or similar to the control explained in Fig. 8 will be omitted.

[0099] 13, in step S400, the control unit 10 determines whether or not an ON signal has been supplied from the first sensor 12L, etc. by operating the first contact member 9AL, etc. If an ON signal has been supplied, the process proceeds to step S410.

[0100] In step S410, the control unit 10 starts the bundling operation. As a result, the wire W is fed by the feeding unit 3A, and the wire W is gripped and twisted by the twisting unit 7A, so that the reinforcing bars S are bound with the wire W.

[0101] In step S420, the control unit 10 determines whether or not the movement switch 19 has been turned on. For example, if a jam of the wire W occurs after the start of the bundling operation, the worker operates the movement switch 19 to clear the jam. If the control unit 10 determines that the movement switch 19 has been turned on, the process proceeds to step S430.

[0102] In step S430, the control unit 10 executes a first mode in which the operating unit 71 is stopped at the forward position by driving the movement mechanism 13. This makes it possible to stop the regulating member 42 and the retracting mechanism 43, which are linked to the operating unit 71, at a second position spaced apart from the first guide 51. Note that the movement switch 19 may be configured as a mechanical switch, and when the movement switch 19 is operated by an operator, the regulating member 42 and the retracting mechanism 43 may be moved to the second position regardless of the determination of the control unit 10.

[0103] According to the third modified example, even if a jam occurs between the first guide 51 and the retracting mechanism 43 during the bundling operation, the retracting mechanism 43 can be moved to the second position by operating the movement switch 19, so that the wire W caught between the retracting mechanism 43 and the first guide 51 can be easily pulled out and the jam can be cleared. The control of the third modified example can also be applied to the case where a jam occurs in the gripping unit 70, which is an example of the functional unit 40.

[0104] [Other variations] In addition to the first to third modified examples described above, the control for moving the functional unit 40 including the regulating member 42, the retracting mechanism 43, and the gripping unit 70 to the second position may be controlled as follows. Specifically, when the power switch 16 is turned on by the operator, the functional unit 40 may be controlled to move to the second position. Also, the default of the functional unit 40 may be set as the first position, and when a predetermined time has elapsed, for example, when the power switch 16 is turned on, the functional unit 40 may be located at the first position, and when the predetermined time has elapsed, the functional unit 40 may be moved to the second position. Also, when a predetermined time has elapsed since the first contact member 9AL or the like is turned on, the functional unit 40 may be controlled to move to the second position. Also, in this case, when the first contact member 9AL or the like is not turned on for a predetermined time after the end of the bundling operation, the functional unit 40 may be controlled to move to the second position.

[0105] [Second embodiment] Next, a reinforcing bar binding machine 1B according to a second embodiment will be described. The main configuration and binding operation of the reinforcing bar binding machine 1B according to the second embodiment are the same as those of the reinforcing bar binding machine 1A according to the first embodiment. Therefore, the same or similar reference numerals are used to designate components having substantially the same functional configuration as those of the reinforcing bar binding machine 1A according to the first embodiment described above, and redundant explanations will be omitted.

[0106] (Example of the configuration of the rebar binding machine 1B) FIG. 14 is a perspective view of a reinforcing bar binding machine 1B according to the second embodiment, and FIG. 15 is a side view showing the internal configuration of the reinforcing bar binding machine 1B according to the second embodiment.

[0107] 14 and 15, the reinforcing bar binding machine 1B includes a storage unit 2B that rotatably stores a wire reel 20 around which a wire W is wound, and a feed unit 3B that feeds the wire W wound around the wire reel 20 stored in the storage unit 2B. The reinforcing bar binding machine 1B also includes a regulating unit 4B that imparts a curl to the wire W fed by the feed unit 3B, and a guide unit 5B that guides the wire W that has been curled by the regulating unit 4B. The reinforcing bar binding machine 1B also includes a cutting unit 6B that cuts the wire W, a twisting unit 7B that twists the wire W, and a drive unit 8B that drives the cutting unit 6B, the twisting unit 7B, etc.

[0108] A handle portion 15h is provided in a protruding form on the other side of the main body portion 15 of the rebar binding machine 1B. A battery 17 is detachably attached to the lower portion of the handle portion 15h. A trigger 15t that is operated to operate the rebar binding machine 1B is provided on the front side of the handle portion 15h.

[0109] 5 and other drawings, the feed unit 3B includes a pair of first and second feed gears 30L and 30R that feed the wire W while clamping it by a rotational motion. The second feed gear 30R of the feed unit 3B is configured to be movable between a first position on the feed track of the wire W and a second position off the feed track of the wire W.

[0110] As shown in FIG. 15 and other figures, the functional unit 40 includes a regulating member 42 constituting the regulating unit 4B described above, and a retracting mechanism 43 to which the regulating member 42 is attached. The retracting mechanism 43 is connected to a transmission member 44 that operates in conjunction with the moving member 83 of the driving unit 8B, and is configured to be variable in position relative to the feed track of the wire W. Specifically, the regulating member 42 and the retracting mechanism 43 are located at a first position on the feed track of the wire W that contacts the wire W when the feed unit 3B feeds the wire W in the forward direction to give the wire W a curl (see FIG. 6A). In addition, the regulating member 42 and the retracting mechanism 43 move to a second position that is out of the feed track of the wire W that does not contact the wire W, before the wire W is fed in the reverse direction as shown in FIG. 4C and wound around the reinforcing bar S (see FIG. 6B).

[0111] The twisting unit 7B is an example of the functional unit 40, and includes a gripping unit 70 that grips the wire W, and an actuation unit 71 that actuates the gripping unit 70. The gripping unit 70 includes a hook that opens and closes in conjunction with the operation of the actuation unit 71, and is configured to be movable between a first position where the hook is open and a second position where the hook is closed.

[0112] (Example of hardware configuration for rebar binding machine 1B) 16 is a block diagram showing an example of the hardware configuration of the reinforcing bar binding machine 1B. Note that components having substantially the same functional configuration as those of the reinforcing bar binding machine 1A according to the first embodiment are given the same reference numerals and will not be described again.

[0113] As shown in FIG. 16, the rebar binding machine 1B includes a control unit 10, a trigger 15t, a memory unit 14, a power switch 16, an operation unit 18, a twisting motor 80, and a feed motor 33.

[0114] The trigger 15t includes a trigger switch, and when pulled by an operator, the trigger switch is turned on and outputs an operation signal to the control unit 10. The control unit 10 executes the binding operation by driving the feed motor 33 and the twist motor 80 based on the operation signal supplied from the trigger 15t.

[0115] (Example of control for rebar binding machine 1B) Fig. 17 is a flowchart showing an example of control of the reinforcing bar binding machine 1B when the wire W is pinched between the first guide 51 and the retraction mechanism 43. Note that detailed explanation of the control common to Fig. 8 of the first embodiment will be omitted.

[0116] First, when an operator confirms that the wire W is caught between the first guide 51 and the retraction mechanism 43, the operator operates the release lever 39. This causes the second feed gear 30R to move away from the first feed gear 30L, and the meshing between the first feed gear 30L and the second feed gear 30R is released.

[0117] 17, in step S500, the control unit 10 determines whether or not an operation signal based on an ON operation of the trigger 15t has been input. If it is determined that the trigger 15t has been turned ON, the process proceeds to step S510.

[0118] In step S510, the control unit 10 starts the bundling operation. Specifically, it drives the feed motor 33 and the twist motor 80. At this time, the meshing between the first feed gear 30L and the second feed gear 30R is released, so the wire W is in an idling state, the load current of the feed motor 33 does not increase, and the idling operation is performed. The control unit 10 determines that the wire W is not being fed normally from the output result of the load current of the feed motor 33, increments the continuous idling counter N (N=1), and stores the result in the memory unit 14. When a series of idling operations is completed, it stops the feed motor 33 and the twist motor 80. The operating unit 71 and the like return to their initial positions.

[0119] In step S520, the control unit 10 judges whether the blank bundling operation has been performed, for example, three times in succession and the continuous blank beating counter N has reached N = 3. If the control unit 10 judges that the continuous blank beating counter N is not N = 3, the control unit 10 returns to step S500 and executes the blank bundling operation of steps S500 and S510 described above.

[0120] On the other hand, if it is determined that the continuous blank firing counter N is 3, the process proceeds to step S530. In step S530, the control unit 10 drives the feed motor 33 to rotate the first feed gear 30L, and drives the torsion motor 80 to advance the operating unit 71. As the operating unit 71 advances, the regulating member 42 and the retracting mechanism 43 move from the first position to the second position.

[0121] In step S540, the control unit 10 stops the feed motor 33 and the twist motor 80 at the position where the operating unit 71 has advanced, thereby stopping the empty binding operation. As a result, the regulating member 42 and the retracting mechanism 43 are stopped at the second position, the retracting mechanism 43 is separated from the first guide 51, and a gap is provided between the first guide 51 and the retracting mechanism 43.

[0122] Since a gap is provided between the first guide 51 and the retraction mechanism 43, the operator can easily remove the wire W that has been caught between the first guide 51 and the like. When the operation of removing the wire W is completed, the operator turns off the power switch 16. When the power switch 16 is turned on again, the control unit 10 executes initialization to return the operating unit 71 and the like to their initial positions. Thereafter, when the operator turns on the trigger 15t, the bundling operation is resumed. Note that the resumption of the bundling operation can also be achieved by control other than the on / off of the power switch 16.

[0123] In addition to the control shown in FIG. 17, the control according to the first to third modified examples described above can be applied as a means for solving the problem when a poor feed of the wire W occurs in the regulating unit 4B by changing the ON operation of the first contact member 9AL, etc. to the ON operation of the trigger 15t. Specifically, in the rebar binding machine 1B, after the end of the binding operation, the control shown in FIG. 9 of the first modified example can be performed, that is, after binding, the operating unit 71 is stopped at the forward position, and the retraction mechanism 43 that operates in conjunction with this can be controlled to stop at the second position. In addition, the control shown in FIG. 11 of the second modified example can be performed, that is, a jam detection sensor 11 is provided, and the retraction mechanism 43 is controlled to move to the second position when a jam occurs. In addition, the control shown in FIG. 13 of the third modified example can be performed, that is, a moving switch 19 that moves the retraction mechanism 43 is provided, and when a poor feed of the wire W occurs, the retraction mechanism 43 can be moved to the second position by operating the moving switch 19. The controls according to the first to third modified examples can also be applied when a jam or the like occurs at the gripper 70 having a hook.

[0124] Although the preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, the technical scope of the present disclosure is not limited to such examples. Any technical idea that a person having ordinary knowledge in the technical field of the present disclosure can come up with various modified or amended examples within the scope of the technical idea described in the claims belongs to the technical scope of the present disclosure. [Explanation of symbols]

[0125] 1A,1B Rebar binding machine (binding machine) 3A, 3B Feed section 4A, 4B Regulatory section (functional section) 6A,6B cutting section 7A, 7B Twisted section 8A, 8B Drive unit 10 Control section 40 Functional section 42 Regulating member (regulating part, functional part) 43 Evacuation mechanism (regulation part, function part) 70 Gripping part (functional part) S Reinforced concrete (bundled) W Wire

Claims

1. A feeding section capable of feeding the wire and winding it around the object to be bound; a functional unit movable between a first position located on the wire feed track and a second position away from the wire feed track; a control unit that moves the functional unit to the first position or the second position, The control unit moves the functional unit to the second position after the bundling operation is completed or when a feeding failure of the wire occurs, The functional unit is any one of a regulating unit that contacts the wire and guides the wire fed by the feeding unit by giving a curl to the wire, a retracting mechanism to which a member constituting the regulating unit is attached, and a gripping unit that engages with the wire and rotates to twist the wire wound around the bundle. Binding machine.

2. a switch for moving the functional unit from the first position to the second position; The strapping machine according to claim 1.

3. the functional unit executes a first mode in which the functional unit is located at the first position or a second mode in which the functional unit is located at the second position after the bundling operation is completed or when a feeding failure of the wire occurs. The strapping machine according to claim 1.

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