End machine

Abstract

To provide a binding machine capable of facilitating entry of a reinforcement between a pair of guides.SOLUTION: A reinforcement binding machine comprises a guide part 5 that guides a wire W around ironware S which is an object to be bound. The guide part 5 comprises a guiding part 59 that guides the ironware S to an insertion port 53. The guiding part 59 is provided closer to a tip side of a first guide 51 than an end P2 of a groove 51h, and provided with a slope inclined in a direction where a gap between the first guide 51 and a second guide 52 becomes smaller from the tip of the first guide 51 to a base end side.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present disclosure relates to a tying machine that ties objects to be tied, such as reinforcing bars, with a wire.

Background Art

[0002] Conventionally, a tying machine has been proposed that pulls a wire from a wire reel attached to a tying machine body, feeds it to a guide portion provided at the tip of the tying machine body, winds the wire around a reinforcing bar disposed inside the guide portion, and ties the reinforcing bar (see, for example, Patent Document 1).

[0003] The tying machine described in Patent Document 1 includes a lower guide provided at a predetermined interval from the guide portion, and a tying operation is performed by inserting a reinforcing bar between the guide portion and the lower guide.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the tying machine described in Patent Document 1, when inserting a reinforcing bar between the guide portion and the lower guide, if the reinforcing bar hits the tip of the guide portion, it may not be possible to insert the reinforcing bar between the guide portion and the lower guide. The operator has to ensure that the reinforcing bar is inserted between the guide portion and the lower guide, which is time-consuming.

[0006] The present disclosure has been made to solve such problems, and an object thereof is to provide a tying machine that allows a reinforcing bar to be easily inserted between a pair of guides.

Means for Solving the Problems

[0007] To solve the above problems, the tying machine according to the present disclosure includes a main body portion, in the forward and reverse directions a wire feeder, being capable of a feeder portion, and one end of the main body portion the proximal end side is attached to, and the main body extends in a first direction the distal end side is and guides the wire fed by the feeder portion in sliding contact with guides, a groove portion having a guide surface and a first guide having a first guiding portion on the tip side along the first direction and a second guide that is arranged at an interval where the object to be tied can be inserted in a second direction orthogonal to the first direction and guides the wire fed by the feeder portion, and a twisting portion that twists the wire guided by the first guide and the second guide, a regulating portion provided on the distal end side of the first guide, with a part of the outer peripheral surface protruding from the guide surface, and including a regulating member that imparts a curl to the wire fed in the forward direction by the feeding portion and the first guiding portion is composed of a surface inclined in a direction in which the distance between the first guide and the second guide approaches from the tip side to the base side along the first direction of the first guiding portion, and the entire first guiding portion of the inclined surface is entirely one regulating member is provided on the tip side of.

[0008] In this tying machine, since the first guiding portion is composed of a surface inclined in a direction in which the distance between the first guide and the second guide approaches from the tip side to the base side, and the entire first guiding portion is provided on the tip side of the end portion of the groove portion of the first guide, when the object to be tied hits the first guiding portion, it is guided in a direction toward between the first guide and the second guide.

Advantages of the Invention

[0009] In the tying machine according to the present disclosure, the object to be tied can be easily inserted between the first guide and the second guide, and the labor of the work can be reduced.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8A

Figure 8B

Figure 9

Figure 10A

Figure 10B

Figure 11

Figure 12

Figure 13

Figure 14A

Figure 14B

Figure 15A

Figure 15B

Figure 16A

Figure 16B

Figure 17A

Figure 17B

Figure 18

Figure 19A

Figure 19B

Figure 20

Figure 21A

Figure 21B

Embodiments for Carrying Out the Invention

[0011] Hereinafter, with reference to the drawings, an example of a steel bar tying machine as an embodiment of the tying machine of the present invention will be described.

[0012] <Example of the steel bar tying machine according to the first embodiment> FIG. 1 is a side view showing an example of the overall configuration of the steel bar tying machine according to the first embodiment, FIG. 2 is a top view showing an example of the overall configuration of the steel bar tying machine according to the first embodiment, FIG. 3 is a perspective view showing an example of the overall configuration of the steel bar tying machine according to the first embodiment, and FIG. 4 is a front view showing an example of the overall configuration of the steel bar tying machine according to the first embodiment.

[0013] The steel bar tying machine 1A according to the first embodiment includes a first main body portion 301, a second main body portion 302, and a long connecting portion 303 that connects the first main body portion 301 and the second main body portion 302. The first main body portion 301 includes a handle portion 304h having a pair of grip portions 304L and 304R that can be gripped by an operator. Further, a battery 310B is attached to the first main body portion 301.

[0014] FIG. 5 is a perspective view showing an example of the grip portion. The handle portion 304h includes an operation portion 304t in the grip portion 304R mainly gripped by the right hand. The operation portion 304t is attached to the grip portion 304R so as to be rotatable about an axis (not shown) as a fulcrum and protrudes from the surface of the grip portion 304R. The operation portion 304t is actuated by rotating with respect to the grip portion 304R when being gripped together with the grip portion 304R by an operator. The rebar tying machine 1A includes an output portion in the grip portion 304R that performs a predetermined output when the operation portion 304t is actuated. The output portion that performs a predetermined output when the operation portion 304t is actuated is referred to as a first output portion, which will be described later.

[0015] FIG. 6 is a side view showing an example of the internal configuration of the rebar tying machine according to the first embodiment, and FIG. 7 is a side view showing a main part of the internal configuration of the rebar tying machine according to the first embodiment.

[0016] The second main body portion 302 includes a housing portion 2 that rotatably houses a wire reel 20 around which a wire W is wound, and a feeding portion 3 that feeds the wire W wound around the wire reel 20 housed in the housing portion 2. Further, the second main body portion 302 includes a regulating portion 4 that imparts a twist to the wire W fed by the feeding portion 3, and a guide portion 5 that guides the wire W to which the twist is imparted by the regulating portion 4 around the ironware S, which is an object to be tied. Furthermore, the second main body portion 302 includes a cutting portion 6 that cuts the wire W, a twisting portion 7 that twists the wire W, and a driving portion 8 that drives the cutting portion 6, the twisting portion 7, etc.

[0017] The rebar tying machine 1A has a guide portion 5 provided on one side of the second main body portion 302. In the present embodiment, the side where the guide portion 5 is provided is defined as the front. The rebar tying machine 1A has a form in which the space between the guide portion 5 and the handle portion 304h extends as compared with a rebar tying machine not having a connecting portion 303, by connecting the first main body portion 301 and the second main body portion 302 with the connecting portion 303.

[0018] The accommodating portion 2 is configured to be detachable and supportable for the wire reel 20. The feeding portion 3 includes a pair of feeding gears 30 as feeding members. The feeding portion 3 feeds the wire W by rotating the feeding gears 30 by a motor (not shown) with the wire W being sandwiched between the pair of feeding gears 30. The feeding portion 3 can feed the wire W in both the forward direction indicated by the arrow F and the reverse direction indicated by the arrow R according to the rotation direction of the feeding gears 30.

[0019] The cutting portion 6 is provided on the downstream side of the feeding portion 3 with respect to the forward feeding of the wire W indicated by the arrow F. The cutting portion 6 includes a fixed blade portion 60 and a movable blade portion 61 that cuts the wire W in cooperation with the fixed blade portion 60. Further, the cutting portion 6 includes a transmission mechanism 62 that transmits the movement of the driving portion 8 to the movable blade portion 61.

[0020] The fixed blade portion 60 includes 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.

[0021] The restricting portion 4 includes first to third restricting members that contact the wire W at a plurality of locations along the feeding direction of the wire W fed by the feeding portion 3, in this example, at least three locations, thereby imparting a winding habit to the wire W along the feeding path Wf of the wire W indicated by the dashed line in FIG. 7.

[0022] The restricting portion 4 is configured such that the first restricting member is the above-described fixed blade portion 60. Further, the restricting portion 4 includes a restricting member 42 as a second restricting member on the downstream side of the fixed blade portion 60 with respect to the forward feeding of the wire W indicated by the arrow F, and includes a restricting member 43 as a third restricting member on the downstream side of the restricting member 42. The restricting member 42 and the restricting member 43 are formed of columnar members, and the wire W contacts the outer peripheral surface.

[0023] The regulating unit 4 arranges the fixed blade part 60, the regulating member 42, and the regulating member 43 on a curve in accordance with the feed path Wf of the wire W in a spiral shape. An opening 60a through which the wire W passes is provided on the feed path Wf of the wire W in the fixed blade part 60. Further, the regulating member 42 is provided on the inner side in the radial direction with respect to the feed path Wf of the wire W. Furthermore, the regulating member 43 is provided on the outer side in the radial direction with respect to the feed path Wf of the wire W.

[0024] As a result, the wire W fed by the feeding unit 3 passes while contacting the fixed blade part 60, the regulating member 42, and the regulating member 43, so that the wire W is curled along the feed path Wf of the wire W.

[0025] The regulating unit 4 includes a transmission mechanism 44 that transmits the movement of the driving unit 8 to the regulating member 42. The regulating member 42 is configured to be movable to a position where it contacts the wire W during the operation of feeding the wire W in the forward direction by the feeding unit 3 and curling the wire W, and to a position where it does not contact the wire W during the operation of feeding the wire W in the reverse direction and winding the wire W around the reinforcing bar S.

[0026] FIG. 8A and FIG. 8B are side views showing an example of the guide part, FIG. 9 is a perspective view showing an example of the guide part and the contact member, and FIG. 10A and FIG. 10B are side views showing an example of the contact member. Next, the configuration and the operation and effect of operating a pair of guides will be described.

[0027] The guide part 5 includes a first guide 51 provided with the regulating member 43 of the regulating unit 4, and a second guide 52 that guides the wire W curled by the regulating unit 4 and the first guide 51 to the twisting part 7.

[0028] The first guide 51 is attached to the front end of the second main body 302 and extends in the first direction indicated by the arrow A1. As shown in FIG. 7, the first guide 51 includes a groove portion 51h having a guide surface 51g with which the wire W fed by the feeding unit 3 is in sliding contact. In the first guide 51, when the side attached to the second main body 302 is defined as the base end side and the side extending from the second main body 302 in the first direction is defined as the tip end side, the regulating member 42 is provided on the base end side of the first guide 51, and the regulating member 43 is provided on the tip end side of the first guide 51. A gap through which the wire W can pass is formed between the guide surface 51g of the first guide 51 and the outer peripheral surface of the regulating member 42. A part of the outer peripheral surface of the regulating member 43 protrudes from the guide surface 51g of the first guide 51.

[0029] The second guide 52 is attached to the front end of the second main body 302. The second guide 52 is provided opposite to the first guide 51 in the second direction indicated by the arrow A2 that is orthogonal to the first direction. A predetermined interval is provided between the first guide 51 and the second guide 52 along the second direction, and an insertion and extraction port 53 through which the reinforcing bar S is inserted and extracted as shown in FIGS. 8A and 8B is formed between the first guide 51 and the second guide 52.

[0030] The guide portion 5 includes a guiding portion 59 that guides the reinforcing bar S to the insertion and extraction port 53. The guiding portion 59 is an example of the first guiding portion, and is provided integrally with the first guide 51 on the tip end side of the first guide 51. A surface on which the interval between the first guide 51 and the second guide 52 approaches from the tip end side to the base end side is provided. Specifically, as shown in FIG. 7, the guiding portion 59 is provided on the tip end side of the end portion P2 of the groove portion 51h on the tip end side of the first guide 51. More specifically, the guiding portion 59 is composed of an inclined surface that inclines in a direction in which the interval between the first guide 51 and the second guide 52 approaches with respect to the first direction indicated by the arrow A1 from the tip end P1 of the first guide 51 toward the vicinity of the end portion P2 of the groove portion 51h of the first guide 51.

[0031] The inclination angle α of the guiding portion 59 is preferably 6° or more and 45° or less with respect to the axis Ax described later. Further, for the first guide 51, the length of the guiding portion 59 along the first direction indicated by the arrow A1, specifically, the length from the tip P1 of the first guide 51 to the end P2 of the groove portion 51h on the tip side of the first guide 51 is preferably 10 mm or more and 30 mm or less. Furthermore, the length of the first guide 51 including the guiding portion 59 in the same direction, specifically, the length from the tip P3 of the cover portion 11 described later to the tip P1 of the first guide 51 is preferably 110 mm or less.

[0032] If the inclination angle α of the guiding portion 59 is 6° or more, even when the length of the guiding portion 59 from the tip P1 of the first guide 51 to the end P2 of the groove portion 51h is 10 mm, the insertion and extraction opening 53, which is the distance between the first guide 51 and the second guide 52, can be widened to 1 mm or more. However, if the inclination angle α of the guiding portion 59 exceeds 45°, a force is generated that pushes the reinforcing bar S against the moving direction of the reinforcing bar tying machine 1A in the operation of inserting the reinforcing bar S into the insertion and extraction opening 53 between the first guide 51 and the second guide 52, making it difficult to insert the reinforcing bar S into the insertion and extraction opening 53 along the guiding portion 59. If the length of the guiding portion 59 is less than 10 mm, the length for moving the reinforcing bar S along the guiding portion 59 is insufficient. Also, if the length of the guiding portion 59 exceeds 30 mm, it becomes a resistance when moving the reinforcing bar S along the guiding portion 59, making it difficult to insert the reinforcing bar S into the insertion and extraction opening 53 along the guiding portion 59. Furthermore, there may be cases where the distance between the reinforcing bar arrangement surface on which the reinforcing bar S is disposed and the foundation structure located below (bottom side) the reinforcing bar arrangement surface, and the distance between the front-side reinforcing bar arrangement surface and the back-side reinforcing bar arrangement surface is 110 mm. In such a case, if the length of the first guide 51 exceeds 110 mm, the tip of the first guide 51 contacts the foundation structure or the like, and the reinforcing bar S cannot be inserted to a predetermined position within the insertion and extraction opening 53.

[0033] The first guide 51 includes a visible portion 510 that allows the position of the guide portion 5 to be visible from the handle portion 304h side. The visible portion 510 is an example of the first visible portion and protrudes outside the outer shape of the second main body portion 302. In the present embodiment, the visible portion 510 is provided on the proximal end side of the first guide 51 and protrudes outward from the outer shape of the second main body portion 302 in the second direction, in a direction opposite to the side where the second guide 52 is provided.

[0034] As shown in FIG. 9, the second guide 52 includes a pair of side guides 52a that face each other along a third direction indicated by an arrow A3 that is orthogonal to the first direction and the second direction. In the second guide 52, when the side attached to the second main body portion 302 is the proximal end side and the side extending from the second main body portion 302 in the first direction is the distal end side, the pair of side guides 52a have a narrowing interval from the distal end side toward the proximal end side. The proximal ends of the pair of side guides 52a face each other at an interval through which the wire W can pass.

[0035] The proximal end side of the second guide 52 is supported by a shaft 52b and attached to the second main body portion 302. The axis of the shaft 52b is a direction along the third direction. The second guide 52 is rotatable with respect to the second main body portion 302 with the shaft 52b as a fulcrum. The distal end portion 52c of the second guide 52 is movable in a direction approaching and away from the end portion 51c of the first guide 51 that faces the second guide 52 in the second direction indicated by the arrow A2. At the end portion 51c of the first guide 51, the end portion P2 of the groove portion 51h is exposed.

[0036] By rotation with the shaft 52b as a fulcrum, as shown by the solid line in FIG. 8A, the second guide 52 moves between a first position where the distance between the end portion 52c of the second guide 52 and the end portion 51c of the first guide 51 is a first distance L1, and a second position shown by the two-dot chain line in FIG. 8A and the solid line in FIG. 8B, where the distance between the end portion 52c of the second guide 52 and the end portion 51c of the first guide 51 is a second distance L2 that is shorter than the first distance L1.

[0037] In the state where the second guide 52 is in the second position, there is an open state between the end portion 52c of the second guide 52 and the end portion 51c of the first guide 51. In the state where the second guide 52 is in the first position, the interval between the end portion 52c of the second guide 52 and the end portion 51c of the first guide 51 widens, making it easier to insert the reinforcing bar S into the insertion and extraction opening 53 between the first guide 51 and the second guide 52.

[0038] In the state where the second guide 52 is in the second position, the side guide 52a is located on the feed path Wf of the wire W shown by the dashed line in FIGS. 8A and 8B. When the second guide 52 is in the first position, if the interval between the end portion 52c of the second guide 52 and the end portion 51c of the first guide 51 becomes wider than when the second guide 52 is in the second position, the side guide 52a may be located on the feed path Wf of the wire W, or as shown by the solid line in FIG. 8A, the side guide 52a may be located outside the feed path Wf of the wire W.

[0039] The second guide 52 is biased in the direction of moving to the first position by a biasing member 54 composed of a torsion coil spring or the like, and the state of having moved to the first position is maintained.

[0040] The reinforcing bar tying machine 1A includes a contact member 9A that detects the reinforcing bar S when the reinforcing bar S inserted into the insertion and extraction opening 53 between the first guide 51 and the second guide 52 abuts thereon and operates the second guide 52. Further, the reinforcing bar tying machine 1A includes a cover portion 11 that covers the front end portion of the second main body portion 302.

[0041] The cover part 11 is attached from the front end of the second main body part 302 along the third direction to both the left and right sides of the second main body part 302. The cover part 11 is made of a metal plate material or the like, and has a shape that covers a part or all of the front end of the second main body part 302 and a part of both the left and right sides on the front side of the second main body part 302 between the proximal end side of the first guide 51 and the proximal end side of the second guide 52. Since the second main body part 302 is made of resin while the cover part 11 is made of metal, even if the contact member 9A and the reinforcing bar S abut against the cover part 11, wear of the cover part 11 can be reduced.

[0042] The contact member 9A is attached to the second main body part 302 via the cover part 11 by being rotatably supported by the shaft 90A. The contact member 9A has a bent shape, and a contact part 91A for abutting against the reinforcing bar S is provided on one side with respect to the shaft 90A, and a connecting part 92A connected to the second guide 52 is provided on the other side with respect to the shaft 90A. Specifically, in the second direction, the contact part 91A is provided on one side with respect to the shaft 90A, and the connecting part 92A is provided on the other side.

[0043] The shaft 90A of the contact member 9A is provided near the middle between the first guide 51 and the second guide 52. Further, the contact member 9A has a pair of contact parts 91A provided in the third direction indicated by the arrow A3 at an interval allowing the wire W bundling the reinforcing bar S to pass from the vicinity of the part supported by the shaft 90A to the first guide 51 side. The contact parts 91A extend to both the left and right sides of the first guide 51.

[0044] Furthermore, the contact member 9A has a connecting part 92A provided on the second guide 52 side from the part supported by the shaft 90A, and a displacement part 93A that contacts a part on the side opposite to the side facing the first guide 51 in the second guide 52 is provided at the tip side of the connecting part 92A.

[0045] The contact member 9A pivots with respect to the second main body 302 about the axis 90A, and as shown in Fig. 10A, it moves between a standby position where the contact portion 91A protrudes from the cover portion 11 into the insertion opening 53 and an operating position where the contact portion 91A approaches the cover portion 11 as shown in Fig. 10B.

[0046] In the state where the contact member 9A has moved to the operating position shown in Fig. 10B, the contact portion 91A has a shape that extends in the direction in which the first guide 51 is provided along the second direction indicated by the arrow A2 from the axis 90A. Therefore, the contact member 9A moves along the first direction indicated by the arrow A1 along an arc centered on the axis 90A by pivoting about the axis 90A. In the operation of inserting the reinforcing bar S into the insertion opening 53 between the first guide 51 and the second guide 52, the reinforcing bar tying machine 1A moves in the first direction indicated by the arrow A1. Due to the relative movement between the reinforcing bar tying machine 1A and the reinforcing bar S, the contact member 9A is pushed by a force along the first direction indicated by the arrow A1 on the contact portion 91A and moves to the operating position. As a result, the direction in which the contact portion 91A moves by pivoting about the axis 90A becomes the same as the direction of the force with which the reinforcing bar S pushes the contact portion 91A due to the relative movement between the reinforcing bar tying machine 1A and the reinforcing bar S. Also, in the state where it has moved to the operating position shown in Fig. 10B, the contact member 9A has a shape in which the connecting portion 92A is inclined forward from the axis 90A with respect to the contact portion 91A and extends in the direction in which the second guide 52 is provided. Therefore, the contact member 9A moves along the second direction indicated by the arrow A2 along an arc centered on the axis 90A by pivoting about the axis 90A. As a result, the contact member 9A is urged by the urging member 54, and when the second guide 52 is in the first position, the displacement portion 93A is pushed away from the first guide 51 by the second guide 52. For this reason, the contact member 9A moves to the standby position by pivoting about the axis 90A, and the contact portion 91A protrudes from the cover portion 11. In this example, the contact member 9A is configured to move by the force of the urging member 54 that urges the second guide 52, but it may also be configured to include other urging members that urge the contact member 9A.

[0047] When the contact portion 91A is pressed against the reinforcing bar S, the contact portion 91A moves along the first direction. As a result, the contact member 9A rotates about the shaft 90A and moves to the operating position. When the contact member 9A moves to the operating position, the displacement portion 93A moves in a direction approaching the first guide 51 by the rotation of the connecting portion 92A about the shaft 90A. As a result, the displacement portion 93A presses the second guide 52, and the second guide 52 moves to the second position. In this way, when the reinforcing bar S abuts on the contact portion 91A and the displacement portion 93A moves, the second guide 52 moves from the first position to the second position.

[0048] FIG. 11 is a side view showing an example of an output portion that detects the second guide. Next, the details of the second output portion 12A will be described with reference to each figure. The reinforcing bar bundling machine 1A includes a second output portion 12A that detects that the second guide 52 has moved to the second position and performs a predetermined output. The second output portion 12A is configured such that the output changes due to the displacement of the mover 120, for example. In this example, when the contact member 9A moves to the standby position and the second guide 52 moves to the first position, the second guide 52 moves in a direction away from the mover 120. In this way, the output of the second output portion 12A in a state where the second guide 52 has moved to the first position is turned off. On the other hand, when the contact member 9A moves to the operating position and the second guide 52 moves to the second position, the second guide 52 moves in a direction of pressing the mover 120. In this way, the output of the second output portion 12A in a state where the second guide 52 has moved to the second position is turned on. Note that the output portion that detects the second guide may be configured by a non-contact sensor. Further, instead of the output portion that detects the second guide, a configuration may be provided that includes an output portion that detects that the contact member has moved to the operating position.

[0049] Next, the twisting portion 7 and the driving portion 8 will be described with reference to each figure. The twisting portion 7 includes an engaging portion 70 with which the wire W engages and an operating portion 71 that operates the engaging portion 70. The engaging portion 70 twists the wire W wound around the reinforcing bar S by rotating by the operation of the operating portion 71.

[0050] The drive unit 8 includes a torsion motor 80 that drives the torsion part 7 and the like, a speed reducer 81 that performs speed reduction and torque amplification, a rotating shaft 82 that is driven by the torsion motor 80 via the speed reducer 81 and rotates, and a moving member 83 that transmits a driving force to the cutting part 6 and the regulating member 42. The torsion part 7 and the drive unit 8 are arranged such that the rotating shaft 82 and the rotation centers of the operating part 71 and the engaging part 70 are coaxially disposed. The rotation center of the rotating shaft 82, the operating part 71, and the engaging part 70 is referred to as the axis Ax.

[0051] The engaging part 70 is formed with a first passage through which the wire W sent to the cutting part 6 by the feeding part 3 passes, and a second passage through which the wire W that is curled by the regulating part 4 and guided to the torsion part 7 by the guide part 5 passes.

[0052] The drive unit 8 moves the operating part 71 along the axial direction of the rotating shaft 82 by the rotational operation of the rotating shaft 82. By the operating part 71 moving along the axial direction of the rotating shaft 82, the engaging part 70 holds the tip side of the wire W guided to the torsion part 7 by the guide part 5.

[0053] The drive unit 8, in conjunction with the operation of the operating part 71 moving along the axial direction of the rotating shaft 82, moves the moving member 83 along the axial direction of the rotating shaft 82, whereby the movement of the moving member 83 is transmitted by the transmission mechanism 44 to the regulating member 42, and the regulating member 42 moves to a position where it does not contact the wire. Further, by the operating part 71 moving along the axial direction of the rotating shaft 82, the movement of the moving member 83 is transmitted by the transmission mechanism 62 to the movable blade part 61, and the movable blade part 61 operates to cut the wire W.

[0054] The drive unit 8 rotates the operating part 71 that has been moved along the axial direction of the rotating shaft 82 by the rotational operation of the rotating shaft 82. The operating part 71 rotates about the axis of the rotating shaft 82, whereby the engaging part 70 twists the wire W.

[0055] FIG. 12 is a functional block diagram of the steel bar tying machine according to the first embodiment. The steel bar tying machine 1A includes a first output unit 15 that operates by an operation of the operation unit 304t, and a control unit 100A detects an output of a second output unit 12A that operates by an operation in which a steel bar S abuts against a contact portion 91A of the contact member 9A and the steel bar S is pressed. The control unit 100A controls a feed motor 31 that drives a feed gear 30 and a twist motor 80 that drives a twisting unit 7 or the like according to the outputs of the first output unit 15 and the second output unit 12A, and executes a series of operations for tying the steel bar S with a wire W.

[0056] Next, an operation of tying the steel bar S with the wire W by the steel bar tying machine 1A will be described. An operator grips the handle portion 304h of the steel bar tying machine 1A with both hands. That is, the operator grips the grip portion 304R of the handle portion 304h with the right hand and the grip portion 304L of the handle portion 304h with the left hand.

[0057] When the operation unit 304t is gripped together with the grip portion 304R by the operator, the operation unit 304t operates by rotating with respect to the grip portion 304R. When the operation unit 304t operates, the output of the first output unit 15 turns on, and the control unit 100A detects that the output of the first output unit 15 has turned on.

[0058] The operator grips the handle portion 304h of the steel bar tying machine 1A with both hands, aligns the position of the guide portion 5 with the intersection of the two steel bars S, and inserts the steel bar S into the insertion / removal port 53.

[0059] The steel bar tying machine 1A is used in a state where the operator stands with the guide portion 5 facing downward in order to tie the steel bar S at the operator's feet. The steel bar S to be tied is located at a position away from the handle portion 304h, and moreover, the visual field is blocked by the first main body portion 301, the connecting portion 303, and the second main body portion 302, making it difficult to see the guide portion 5 and the intersection of the two steel bars S. For this reason, it is difficult to align the position of the guide portion 5 with the intersection of the two steel bars S. Also, in the operation of tying the steel bar S, it is preferable to substantially align the intersection of the steel bars S with a virtual plane including the feed path Wf of the wire W shown in FIG. 7 or the like.

[0060] Therefore, the steel bar tying machine 1A is provided with a visual recognition portion 510 that enables the position of the guide portion 5 to be visually recognized from the handle portion 304h side. The visual recognition portion 510 is provided on the proximal end side of the first guide 51, and protrudes from the second main body portion 302 in the second direction toward the side opposite to the side where the second guide 52 is provided. In this way, the visual recognition portion 510 is provided on the first guide 51 in a form protruding from the second main body portion 302, and an operator standing while gripping the handle portion 304h can easily visually recognize the visual recognition portion 510. Further, the visual recognition portion 510 is provided at a position substantially coinciding with a virtual plane including the feeding path Wf of the wire W passing through the groove portion 51h of the first guide 51 shown in FIG. 7. Therefore, the position of the virtual plane including the feeding path Wf of the wire W can be visually recognized as the position of the visual recognition portion 510. Thereby, while visually recognizing the visual recognition portion 510, the position of the first guide 51 can be easily aligned with the intersection of the steel bars S. And by aligning the position of the first guide 51 with the intersection of the steel bars S, the intersection of the steel bars S can be made to substantially coincide with the virtual plane including the feeding path Wf of the wire W.

[0061] In addition, the steel bar tying machine 1A is provided with a guiding portion 59 having a shape for guiding the steel bar S to the insertion / removal opening 53 on the distal end side of the first guide 51. The operator can place the steel bar S against the guiding portion 59 and move the steel bar S so that the guiding portion 59 slides thereon. Thereby, when the guiding portion 59 of the first guide 51 is applied to the steel bar S, the first guide 51 can be guided in the direction in which the steel bar S enters the insertion / removal opening 53. If the inclination angle α of the guiding portion 59 is 5° or more and 45° or less with respect to the axis Ax, when the guiding portion 59 of the first guide 51 is applied to the steel bar S, the first guide 51 can be surely guided in the direction in which the steel bar S enters the insertion / removal opening 53.

[0062] Furthermore, when the steel bar S is not inserted into the insertion / removal opening 53, as shown in FIG. 10A, the second guide 52 moves to the first position, and the interval between the end portion 52c of the second guide 52 and the end portion 51c of the first guide 51 widens. Thereby, it becomes easier to insert the steel bar S into the insertion / removal opening 53.

[0063] In addition, when there are obstacles such as another reinforcing bar or a wall surface on the back side of the reinforcing bar S to be bundled, if the tip P1 of the first guide 51 hits the obstacle, the reinforcing bar S to be bundled cannot be brought into contact with the contact portion 91A of the contact member 9A. On the other hand, if the length from the tip P1 of the first guide 51 to the end P2 of the groove portion 51h on the tip side of the first guide 51 is 10 mm or more and 30 mm or less, the tip P1 of the first guide 51 is suppressed from hitting the obstacle, and the reinforcing bar S can be brought into contact with the contact portion 91A of the contact member 9A.

[0064] The operator presses the reinforcing bar S against the contact portion 91A of the contact member 9A by moving the reinforcing bar tying machine 1A in the direction of inserting the reinforcing bar S into the insertion / removal port 53.

[0065] The contact member 9A receives a force along the direction in which the reinforcing bar tying machine 1A moves in the operation of moving the reinforcing bar tying machine 1A in the direction of inserting the reinforcing bar S into the insertion / removal port 53, and thus the contact portion 91A is pushed. As a result, the contact member 9A rotates about the shaft 90A as the contact portion 91A moves along the first direction indicated by the arrow A1, and moves to the operating position as shown in FIG. 10B.

[0066] When two intersecting reinforcing bars S are inserted into the insertion / removal port 53, one reinforcing bar S is located on one side portion of the first guide 51, and the other reinforcing bar S is located on the other side portion of the first guide 51. On the other hand, the contact member 9A has a pair of contact portions 91A extending from between the first guide 51 and the second guide 52 to both the left and right sides of the first guide 51. Thereby, the reinforcing bar S inserted into the insertion / removal port 53 surely contacts the contact portion 91A, and the contact member 9A can be moved to the operating position. Further, the contact portion 91A of the contact member 9A moves along the first direction indicated by the arrow A1 by a rotation operation about the shaft 90A as a fulcrum. Thereby, in the operation of moving the reinforcing bar tying machine 1A in the direction of inserting the reinforcing bar S into the insertion / removal port 53, the contact portion 91A can be pushed, and in order to operate the contact member 9A, it is not necessary to move the reinforcing bar tying machine 1A in another direction.

[0067] When the contact member 9A moves to the operating position, the rotation of the connecting portion 92A about the shaft 90A causes the displacement portion 93A to push the second guide 52 in a direction approaching the first guide 51, and the second guide 52 moves to the second position.

[0068] When the second guide 52 moves to the second position, the output of the second output portion 12A turns on, and the control unit 100A detects that the output of the second output portion 12A has turned on. In a state where the contact member 9A whose output of the second output portion 12A turns on has moved to the operating position, the reinforcing bar S is within the feeding path Wf of the wire W indicated by the broken line in FIG. 7 and is in a state of being placed in a bundling possible position. Thereby, the second output portion 12A can detect that the reinforcing bar S has been placed within the feeding path Wf of the wire W.

[0069] When the control unit 100A detects that the output of the second output portion 12A has turned on in a state where it has detected that the output of the first output portion 15 has turned on, it controls the feeding motor 31 and the twisting motor 80 to execute a series of operations for bundling the reinforcing bar S with the wire W.

[0070] Regarding the details of the bundling operation, when the feeding motor 31 rotates in the forward direction and the feeding gear 30 rotates in the forward direction, the wire W is fed in the forward direction indicated by the arrow F. The wire W fed in the forward direction by the feeding unit 3 passes through the fixed blade portion 60 which is the first regulating member constituting the regulating unit 4 and the regulating member 42 which is the second regulating member. The wire W that has passed through the regulating member 42 is guided by the regulating member 43 which is the third regulating member by contacting the guide surface 51g of the first guide 51.

[0071] Thereby, the wire W fed in the forward direction by the feeding unit 3 is bent into an arc shape by contacting the fixed blade portion 60, the regulating member 42, the regulating member 43, and the guide surface 51g of the first guide 51. Then, the wire W fed in the forward direction by the feeding unit 3 contacts the fixed blade portion 60 and the regulating member 43 from the outer peripheral direction of the arc shape, and the regulating member 42 contacts from the inner peripheral direction of the arc shape between the fixed blade portion 60 and the regulating member 43, so that a winding habit of drawing a substantially circle is formed.

[0072] There is a predetermined gap between the end portion 51c of the first guide 51 and the end portion 52c of the second guide 52 when the second guide 52 is moved to the second position. However, when the second guide 52 is moved to the second position, the pair of side guides 52a are located in the feeding path Wf of the wire W, and the wire W fed in the forward direction by the feeding unit 3 is curled by the regulating unit 4 as described above, so it is guided between the pair of side guides 52a of the second guide 52.

[0073] The wire W guided between the pair of side guides 52a of the second guide 52 is guided by the pair of side guides 52a of the second guide 52 to the engaging portion 70 of the twisting portion 7 by being fed in the forward direction by the feeding unit 3. Then, when the control unit 100A determines that the tip of the wire W has been fed to a predetermined position, it stops the drive of the feeding motor 31. Thereby, the wire W is wound spirally around the reinforcing bar S. In addition, when the second guide 52 has not moved to the second position and the output of the second output unit 12A is off, the control unit 100A does not feed the wire W. Thereby, it is suppressed that the wire W is not engaged with the engaging portion 70 of the twisting portion 7 and a feeding failure occurs.

[0074] After stopping the forward feeding of the wire W, the control unit 100A rotates the twisting motor 80 in the forward direction. By rotating the twisting motor 80 in the forward direction, the operating portion 71 operates the engaging portion 70, and the engaging portion 70 holds the tip side of the wire W.

[0075] When the control unit 100A determines that it has rotated the twisting motor 80 until the engaging portion 70 holds the wire W, it stops the rotation of the twisting motor 80 and rotates the feeding motor 31 in the reverse direction. When the twisting motor 80 is rotated until the engaging portion 70 holds the wire W, the movement of the moving member 83 is transmitted to the regulating member 42 by the transmission mechanism 44, and the regulating member 42 moves to a position where it does not contact the wire.

[0076] When the feed motor 31 rotates in the reverse direction, the feed gear 30 rotates in the reverse direction, and the wire W is fed in the reverse direction indicated by the arrow R. By the operation of feeding the wire W in the reverse direction, the wire W is wound around the reinforcing bar S so as to be in close contact with it.

[0077] When the control unit 100A determines that the feed motor 31 is rotated in the reverse direction until the wire W is wound around the reinforcing bar S, after stopping the rotation of the feed motor 31, the twisting motor 80 is rotated in the forward direction. By rotating the twisting motor 80 in the forward direction, the movable blade portion 61 is actuated via the transmission mechanism 62 by the moving member 83, and the wire W is cut.

[0078] After the wire W is cut, by continuing the forward rotation of the twisting motor 80, the engaging portion 70 is rotated to twist the wire W.

[0079] When the control unit 100A determines that the twisting motor 80 is rotated in the forward direction until the wire W is twisted, the twisting motor 80 is rotated in the reverse direction. By rotating the twisting motor 80 in the reverse direction, the engaging portion 70 is returned to the initial position, and the holding of the wire W is released. As a result, it becomes possible to pull out the wire W that has bound the reinforcing bar S from the engaging portion 70.

[0080] When the control unit 100A determines that the twisting motor 80 is rotated in the reverse direction until the engaging portion 70 etc. is returned to the initial position, the rotation of the twisting motor 80 is stopped.

[0081] The operator moves the reinforcing bar tying machine 1A in the direction of pulling out the reinforcing bar S tied with the wire W from the insertion / removal port 53. When the force of pushing the contact portion 91A of the contact member 9A is no longer applied by the operation of moving the reinforcing bar tying machine 1A in the direction of pulling out the reinforcing bar S from the insertion / removal port 53, the second guide 52 moves from the second position to the first position by the force of the biasing member 54.

[0082] When the second guide 52 moves to the first position, the contact member 9A is pushed in the direction in which the displacement portion 93A separates from the first guide 51, moves to the standby position by rotating about the shaft 90A, and the contact portion 91A protrudes from the cover portion 11.

[0083] In the operation of moving the rebar tying machine 1A in the direction in which the operator pulls out the rebar S tied with the wire W from the insertion / removal port 53, the second guide 52 moves to the first position, and the distance between the end 52c of the second guide 52 and the end 51c of the first guide 51 widens. This makes it easier to pull out the rebar S from the insertion / removal port 53.

[0084] Figs. 13, 14A, and 14B are perspective views showing modified examples of the visual recognition part. In Fig. 13, a visual recognition part 511 is provided that enables visual recognition of the position of the insertion / removal port 53 between the first guide 51 and the second guide 52 from the handle part 304h side.

[0085] The visual recognition part 511 is an example of a second visual recognition part, is provided on the cover part 11, and protrudes to both left and right sides along the third direction indicated by the arrow A3. The visual recognition part 511 is located on the axis Ax shown in Fig. 7 in the second direction indicated by the arrow A2. In the operation of tying the rebar S, it is preferable that the intersection point of the rebar S with the virtual plane including the feed path Wf of the wire W shown in Fig. 7 substantially coincides with the axis Ax. Thereby, the operator can hold the handle part 304h of the rebar tying machine 1A with both hands, and while confirming the positions of the visual recognition part 510 and the visual recognition part 511, align the positions of the visual recognition part 510 and the visual recognition part 511 with the intersection point of the rebar S, and insert the rebar S into the insertion / removal port 53, and it becomes possible to align the direction of the first guide 51 with respect to the rebar S.

[0086] In Figs. 14A and 14B, a visual recognition part 512(A, B) which is a second visual recognition part that enables visual recognition of the position and orientation of the rebar tying machine 1A with respect to the intersecting rebars S from the handle part 304h side and enables alignment of the direction of the first guide 51 with respect to the rebar S is provided. In Fig. 14A, the visual recognition part 512A is provided on the cover part 11 and protrudes in both left and right directions at a predetermined angle with respect to the second direction indicated by the arrow A2 and the third direction indicated by the arrow A3. The angle between the pair of visual recognition parts 512A is approximately 90°.

[0087] In FIG. 14B, the visual recognition portions 512B are provided on each of the pair of contact members 9A, and are formed by lines with changed colors extending in both left and right directions at a predetermined angle with respect to the second direction indicated by arrow A2 and the third direction indicated by arrow A3, and uneven shapes indicating the lines. The angle between the pair of visual recognition portions 512B is approximately 90°.

[0088] Thereby, the operator can hold the handle portion 304h of the steel bar tying machine 1A with both hands, and while confirming the positions of the visual recognition portions 512A and 512B, align the directions of the visual recognition portions 512A and 512B with the directions of the intersecting steel bars S, and insert the steel bar S into the insertion / removal port 53.

[0089] FIGS. 15A and 15B are perspective views showing a modified example of the guide portion. In FIG. 15A, the guide portion 5B includes a guide portion 59B, which is a second guide portion for guiding the steel bar S to the insertion / removal port 53, on the side where the second guide 52 is provided facing the insertion / removal port 53.

[0090] The guide portion 5B includes a third guide 520 on the tip side of the second guide 52. The third guide 520 is attached to the second main body portion 302 via the cover portion 11. The second guide 52 is configured to move in a direction away from and a direction approaching the first guide 51, but the third guide 520 does not move in a direction away from and a direction approaching the first guide 51.

[0091] The third guide 520 covers the second guide 52 and extends forward along the first direction indicated by arrow A1 and in the direction opposite to the first guide 51 along the second direction indicated by arrow A2, and the guide portion 59B is provided on the tip side of the third guide 520.

[0092] The guiding portion 59B is configured by providing a surface where the distance between the third guide 520 and the first guide 51 approaches from the tip of the third guide 520 toward the tip side of the second guide 52. Specifically, the guiding portion 59B is configured by an inclined surface that inclines in a direction where the distance between the third guide 520 and the first guide 51 approaches with respect to the first direction indicated by the arrow A1 from the tip of the third guide 520 toward the tip of the second guide 52.

[0093] In the configuration of FIG. 15A, the guiding portion 59B of the third guide 520 can be applied to the reinforcing bar S and the guiding portion 59B can be moved along the surface of the reinforcing bar S so as to slide. Therefore, the guiding portion 59B can guide the third guide 520 in the direction in which the reinforcing bar S enters the insertion / removal port 53.

[0094] In FIG. 15B, the guide portion 5C includes a guiding portion 59C, which is a second guiding portion for guiding the reinforcing bar S to the insertion / removal port 53, on the side where the second guide 52 is provided facing the insertion / removal port 53.

[0095] The guide portion 5C includes a third guide 521 on the tip side of the second guide 52. The third guide 521 is attached to the second main body portion 302 via the cover portion 11. The second guide 52 is configured to move in a direction away from and approaching the first guide 51, but the third guide 521 does not move in a direction away from and approaching the first guide 51.

[0096] The third guide 521 extends forward of the second guide 52 along the first direction indicated by the arrow A1 in a form covering the second guide 52 to a position facing the guiding portion 59 of the first guide 51, and a guiding portion 59C is provided on the tip side of the third guide 520 so as to face the guiding portion 59 of the first guide 51.

[0097] In the configuration of FIG. 15B, the third guide 521 has a length along the first direction indicated by arrow A1 that is longer than that of the first guide 51. Thus, by placing the guiding portion 59C of the third guide 521 against the reinforcing bar S and moving the reinforcing bar S so that the surface of the reinforcing bar S slides along the guiding portion 59C, the reinforcing bar S can be inserted between the guiding portion 59 of the first guide and the guiding portion 59C of the third guide 521, and then guided along the guiding portion 59C of the third guide 521 to the insertion and extraction opening 53.

[0098] FIGS. 16A, 16B, 17A, and 17B are perspective views showing other modification examples of the guide portion. In FIGS. 16A and 16B, the guide portion 5D includes a guide cover portion 540 provided with a guiding portion 59 and a visual recognition portion 510. The first guide 51 has a groove portion 51h having the guide surface 51g described in FIG. 7 and a regulating member 43, and includes a guide arm 51d for guiding the wire W. Further, the first guide 51 includes a guide cover portion 540, and the guide cover portion 540 is configured to be detachable from the guide arm 51d. The configurations such as the groove portion 51h and the regulating member 43 provided on the guide arm 51d are necessary for giving a winding habit to the wire W and require precision, so the guide arm 51d is configured as a portion fixed to the second main body portion 302.

[0099] On the other hand, the guiding portion 59 and the visual recognition portion 510 are not necessary for giving a winding habit to the wire W. Therefore, compared with the groove portion 51h having the guide surface 51g and the regulating member 43, since precision is not required, it can be configured to be detachable as an independent portion with respect to the guide arm 51d.

[0100] By configuring the guide cover portion 540 provided with the guiding portion 59 and the visual recognition portion 510 to be detachable from the guide arm 51d, the guide cover portion 540 can be replaced. Further, if necessary, it can be used in a state where the guide cover portion 540 is removed as shown in FIG. 16A and in a state where the guide cover portion 540 is attached as shown in FIG. 16B. Furthermore, a guide cover having other functions can also be attached to the guide arm 51d.

[0101] In FIGS. 17A and 17B, the guide cover portion 540B includes a locking portion 541 capable of correcting the position of the reinforcing bar S instead of the guiding portion 59. The locking portion 541 protrudes from the first guide 51 toward the second guide 52 in a state where the guide cover portion 540B is attached to the guide arm 51d, and is configured such that the wire W inserted into the insertion / removal port 53 can be locked. Thereby, after locking the locking portion 541 to the wire W inserted into the insertion / removal port 53 and moving it in the direction of lifting the reinforcing bar S to correct the position, the bundling operation of the reinforcing bar S can be performed.

[0102] <Example of the reinforcing bar bundling machine according to the second embodiment> FIG. 18 is a side view showing an example of the overall configuration of the reinforcing bar bundling machine according to the second embodiment. The reinforcing bar bundling machine 1B according to the second embodiment is not in a long shape, but is provided in a form in which the handle portion 10h protrudes from the main body portion 10, and a trigger 10t for receiving an operation for operating the reinforcing bar bundling machine 1B is provided on the front side of the handle portion 10h. The reinforcing bar bundling machine 1B is provided with a guide portion 5 on one side of the main body portion 10.

[0103] The guide portion 5 includes a guiding portion 59 for guiding the reinforcing bar S to the insertion / removal port 53. The guiding portion 59 is provided on the tip side of the first guide 51, and is configured by providing an inclined surface that inclines in a direction in which the distance between the first guide 51 and the second guide 52 approaches from the tip to the base end side of the first guide 51. Other configurations are the same as those of the reinforcing bar bundling machine 1A according to the first embodiment.

[0104] The operator grips the handle portion 10h of the reinforcing bar bundling machine 1B, aligns the position of the guide portion 5 with the intersection of the two reinforcing bars S, and inserts the reinforcing bar S into the insertion / removal port 53.

[0105] The reinforcing bar bundling machine 1B includes a visual recognition portion 510 that enables visual recognition of the position of the guide portion 5, so that the position of the first guide 51 can be easily aligned with the intersection of the reinforcing bars S while visually recognizing the visual recognition portion 510.

[0106] Further, the steel bar tying machine 1B is provided with a guiding portion 59 having a shape for guiding the steel bar S to the insertion / removal port 53 on the tip side of the first guide 51. Thereby, when the guiding portion 59 of the first guide 51 abuts on the steel bar S, the first guide 51 can be guided in the direction in which the steel bar S enters the insertion / removal port 53.

[0107] Furthermore, when the steel bar S is not inserted into the insertion / removal port 53, the second guide 52 of the steel bar tying machine 1B moves to the first position, and the interval between the end portion 52c of the second guide 52 and the end portion 51c of the first guide 51 widens. This makes it easier to insert the steel bar S into the insertion / removal port 53.

[0108] The operator presses the steel bar S against the contact portion 91A of the contact member 9A by moving the steel bar tying machine 1B in the direction in which the steel bar S is inserted into the insertion / removal port 53.

[0109] The contact member 9A receives a force along the direction in which the steel bar tying machine 1A moves in the operation of moving the steel bar tying machine 1A in the direction in which the steel bar S is inserted into the insertion / removal port 53, and thereby the contact portion 91A is pushed. As a result, the contact member 9A rotates about the shaft 90A as a fulcrum as the contact portion 91A moves along the first direction indicated by the arrow A1, and moves to the operating position as described in the explanation of FIG. 10B.

[0110] The contact portion 91A of the contact member 9A moves along the first direction indicated by the arrow A1 by a rotational operation about the shaft 90A as a fulcrum. Thereby, in the operation of moving the steel bar tying machine 1A in the direction in which the steel bar S is inserted into the insertion / removal port 53, the contact portion 91A can be pushed, and it is not necessary to move the steel bar tying machine 1A in another direction in order to operate the contact member 9A.

[0111] When the contact member 9A moves to the operating position, the connecting portion 92A rotates about the shaft 90A as a fulcrum, and the displacement portion 93A pushes the second guide 52 in the direction approaching the first guide 51, and the second guide 52 moves to the second position.

[0112] When the second guide 52 moves to the second position, the output of the second output unit 12A described in FIG. 11 is turned on. In a state where the contact member 9A at which the output of the second output unit 12A is turned on has moved to the operating position, the reinforcing bar S is within the feeding path Wf of the wire W indicated by the dashed line in FIG. 7 and is in a state of being placed in a bundling possible position. Thereby, the second output unit 12A can detect that the reinforcing bar S has been placed within the feeding path Wf of the wire W.

[0113] When the operator operates the trigger 10t, the output of a first output unit (not shown) is turned on. When the reinforcing bar S is not pressed against the contact portion 91A of the contact member 9A, the contact member 9A is in the standby position, and the output of the second output unit 12A is off, even if the trigger 10t is operated and the output of the first output unit (not shown) is turned on, a series of operations for bundling the reinforcing bar S with the wire W are not executed. On the other hand, when the trigger 10t is operated and the output of the first output unit (not shown) is turned on, and the reinforcing bar S is pressed against the contact portion 91A of the contact member 9A, the contact member 9A moves to the operating position, and the output of the second output unit 12A is turned on, a series of operations for bundling the reinforcing bar S with the wire W are executed. Alternatively, the operator operates the trigger 10t while pressing the reinforcing bar S against the contact portion 91A of the contact member 9A. When the trigger 10t is operated, the output of the first output unit (not shown) is turned on, and a series of operations for bundling the reinforcing bar S with the wire W are executed.

[0114] <Example of a reinforcing bar bundling machine according to the third embodiment> FIGS. 19A and 19B are side views showing the main part of the reinforcing bar bundling machine according to the third embodiment.

[0115] The reinforcing bar bundling machine 1C according to the third embodiment has a configuration in which the contact member and the second guide do not interlock, and as described with reference to FIG. 1 and the like, the first main body portion 301 and the second main body portion 302 are connected by a long connecting portion 303, or, as described with reference to FIG. 18, it is not in a long shape, and is applied to a form in which the handle portion 10h protrudes from the main body portion 10.

[0116] The reinforcing bar tying machine 1C includes a guide portion 5 for guiding a wire. The guide portion 5 includes a first guide 51 and a second guide 52. The first guide 51 and the second guide 52 are attached to the front end of the second main body portion 302 described in FIG. 1 etc. or the main body portion 10 described in FIG. 18, and extend in the first direction indicated by the arrow A1. The second guide 52 is provided opposite to the first guide 51 in the second direction indicated by the arrow A2 orthogonal to the first direction. The second guide 52 may be configured to be movable in a direction approaching and separating from the first guide 51 by rotation about an axis (not shown). The guide portion 5 includes a guiding portion 59 for guiding the reinforcing bar to the insertion and extraction port 53. The guiding portion 59 is provided on the tip side of the first guide 51.

[0117] The first guide 51 includes a visual recognition portion 510 that enables visual recognition of the position of the guide portion 5. The visual recognition portion 510 is provided on the proximal end side of the first guide 51, and protrudes in the second direction from the second main body portion 302 toward the direction opposite to the side where the second guide 52 is provided.

[0118] The reinforcing bar tying machine 1C includes a contact member 9B with which the reinforcing bar S abuts. The contact member 9B is rotatably supported by a shaft 90B and is attached to the second main body portion 302 or the main body portion 10 via a cover portion 11. The contact member 9B is provided with a contact portion 91B for abutting the reinforcing bar S on one side with respect to the shaft 90B. The contact portion 91B of the contact member 9B extends in the direction in which the first guide 51 is provided along the second direction indicated by the arrow A2 from the shaft 90B.

[0119] The shaft 90B of the contact member 9B is provided near the middle of the first guide 51 and the second guide 52. Also, the contact member 9B is provided with a pair of contact portions 91B on the side of the first guide 51 from the vicinity of the portion supported by the shaft 90B between the first guide 51 and the second guide 52. The contact portions 91B are provided on both sides along the third direction with an interval through which the wire W bundling the reinforcing bar S can pass. The contact portions 91B extend to both the left and right sides of the first guide 51.

[0120] The contact member 9B pivots about the shaft 90B and moves between a standby position where the contact portion 91B protrudes from the cover portion 11 into the insertion and extraction opening 53 as shown in FIG. 19A, and an operating position where the contact portion 91B approaches the cover portion 11 as shown in FIG. 19B. The contact member 9B is biased by a biasing member (not shown) in the direction of moving to the standby position and is held in the state of having moved to the standby position.

[0121] The rebar tying machine 1C includes a second output portion 14A that detects that the contact member 9B has moved to the operating position. As shown in FIG. 19A, when the contact member 9B moves to the standby position, the contact portion 91B of the contact member 9B moves in a direction away from the mover 140. Thus, the output of the second output portion 14A in the state where the contact member 9B has moved to the standby position is turned off. On the other hand, when the contact portion 91B is pressed against the rebar and the contact member 9B moves to the operating position as shown in FIG. 19B, the contact portion 91B of the contact member 9B moves in the direction of pushing the mover 140. Thus, the output of the second output portion 14A in the state where the contact member 9B has moved to the operating position is turned on.

[0122] As described with reference to FIG. 1 and the like, when applied to a form in which the first main body portion 301 and the second main body portion 302 are connected by a long connecting portion 303, when it is detected that the output of the first output portion 15 has turned on by operating the operation portion 304t, and when it is detected that the output of the second output portion 14A has turned on by the contact member 9B moving to the operating position, as described above, the feed motor 31 and the twisting motor 80 are controlled to execute a series of operations for tying the rebar S with the wire W.

[0123] Also, as described with reference to FIG. 18, when applied to a form in which the handle portion 10h protrudes from the main body portion 10 instead of having a long shape, when the trigger 10t is operated and the output of an output portion (not shown) has turned on, and when the rebar S is pressed against the contact portion 91B of the contact member 9B and the contact member 9B moves to the operating position and the output of the second output portion 14A turns on, a series of operations for tying the rebar S with the wire W are executed.

[0124] Even in a configuration where the contact member and the second guide do not operate in conjunction, by providing the above-described visual recognition portion 510 that enables visual recognition of the position of the guide portion 5, it is possible to easily align the position of the first guide 51 with the intersection point of the reinforcing bars S while visually recognizing the visual recognition portion 510.

[0125] Further, by providing a guiding portion 59 having a shape that guides the reinforcing bar S to the insertion / removal port 53 on the tip side of the first guide 51, when the guiding portion 59 of the first guide 51 is applied to the reinforcing bar S, the first guide 51 can be guided in the direction in which the reinforcing bar S enters the insertion / removal port 53.

[0126] <Example of a reinforcing bar tying machine according to the fourth embodiment> FIG. 20 is a side view showing a main part of a reinforcing bar tying machine according to the fourth embodiment.

[0127] The reinforcing bar tying machine 1D according to the fourth embodiment has a configuration without a contact member. As described with reference to FIG. 1 and the like, the first main body portion 301 and the second main body portion 302 are connected by a long connecting portion 303, or, as described with reference to FIG. 18, it is applied to a form in which the handle portion 10h protrudes from the main body portion 10 instead of having a long shape.

[0128] The reinforcing bar tying machine 1D includes a guide portion 5 for guiding a wire. The guide portion 5 includes a first guide 51 and a second guide 52. The first guide 51 and the second guide 52 are attached to the second main body portion 302 described with reference to FIG. 1 and the like, or the front end portion of the main body portion 10 described with reference to FIG. 18, and extend in a first direction indicated by an arrow A1. The second guide 52 is provided opposite to the first guide 51 in a second direction indicated by an arrow A2 that is orthogonal to the first direction. The second guide 52 may be configured to be movable in a direction approaching and separating from the first guide 51 by rotation about an axis (not shown) as a fulcrum. The guide portion 5 includes a guiding portion 59 for guiding the reinforcing bar to the insertion / removal port 53. The guiding portion 59 is provided on the tip side of the first guide 51.

[0129] The first guide 51 includes a visible portion 510 that makes the position of the guide portion 5 visible. The visible portion 510 is provided on the proximal end side of the first guide 51 and protrudes from the second main body portion 302 in the second direction toward the side opposite to the side where the second guide 52 is provided.

[0130] Even in a configuration without a contact member, by providing the above-described visible portion 510 that makes the position of the guide portion 5 visible, while visually recognizing the visible portion 510, the position of the first guide 51 can be easily aligned with the intersection of the reinforcing bars S.

[0131] Further, by providing a guiding portion 59 having a shape that guides the reinforcing bar S to the insertion and extraction opening 53 on the distal end side of the first guide 51, when the guiding portion 59 of the first guide 51 contacts the reinforcing bar S, the first guide 51 can be guided in the direction in which the reinforcing bar S enters the insertion and extraction opening 53.

[0132] Note that, even in a configuration without a contact member, when there are obstacles such as another reinforcing bar or a wall surface on the back side of the reinforcing bar S to be bundled, if the tip P1 of the first guide 51 hits the obstacle, the reinforcing bar S to be bundled cannot be brought into contact with the contact portion 91A of the contact member 9A. On the other hand, if the length from the tip P1 of the first guide 51 to the end P2 of the groove portion 51h on the distal end side of the first guide 51 is 10 mm or more and 30 mm or less, the tip P1 of the first guide 51 is suppressed from hitting the obstacle, and the reinforcing bar S can be brought into contact with the cover portion 11.

[0133] <Example of the reinforcing bar bundling machine according to the fifth embodiment> FIGS. 21A and 21B are perspective views showing the main part of the reinforcing bar bundling machine according to the fifth embodiment.

[0134] The reinforcing bar bundling machine 1E according to the fifth embodiment includes protruding portions 57 on the first guides 51 and 51E of the guide portion 5. The protruding portions 57 are configured by providing portions that protrude laterally of the first guides 51 and 51E along the third direction indicated by the arrow A3.

[0135] In FIG. 21A, the protruding portion 57 is configured by bending the upper end portions of one side plate portion and the other side plate portion of the first guide 51 outward along the third direction. In FIG. 21B, the first guide 51E has a groove portion 51h having the guide surface 51g described above and a regulating member 43, and a guide arm 51d for guiding the wire W is covered with a cover portion 57A made of a metal plate material. The protruding portion 57 is configured by bending the upper end portion of the cover portion 57A covering one side portion of the guide arm 51d and the upper end portion of the cover portion 57A covering the other side portion outward along the third direction. Note that the protruding portion 57 may be configured by providing an uneven shape on the side portion of the first guide 51, the guide arm 51d, or the cover portion 57A.

[0136] When the reinforcing bar S is inserted into the insertion / removal port 53, the reinforcing bar S is likely to hit the first guide 51. Therefore, by providing the protruding portion 57 protruding laterally on the first guide 51, the rigidity of the first guide 51, particularly the rigidity against the force for bending the first guide 51 in the surface direction along the third direction, is improved. Thereby, the occurrence of binding failure due to the deformation of the first guide 51 can be suppressed. Similarly, in the first guide 51E as well, by providing the protruding portion 57 protruding laterally on the cover portion 57A, the rigidity of the cover portion 57A is improved, and since the guide arm 51d is reinforced by the cover portion 57A, the overall rigidity of the first guide 51E including the guide arm 51d is improved. Thereby, the occurrence of binding failure due to the deformation of not only the cover portion 57A but also the first guide 51E including the guide arm 51d can be suppressed.

Explanation of Reference Numerals

[0137] 1A, 1B, 1C, 1D, 1E... steel bar tying machine, 10... main body part, 10h... handle part, 10t... trigger, 11... cover part, 12A, 14A... second output part, 120... mover, 15... first output part, 2... accommodating part, 20... wire reel, 3... feeding part, 30... feeding gear, 31... feeding motor, 4... regulating part, 42... regulating member, 43... regulating member, 44... transmission mechanism, 5, 5B, 5C, 5D... guide part, 51, 51E... first guide, 51d... guide arm, 51g... guide surface, 51h... groove part, P2... end part, 51c... end part, 52... second guide, 52a... side guide, 52b... shaft, 52c... end part, 53... insertion and extraction port, 54... biasing member, 57... protruding part, 57A... cover part, 59... guiding part (first guiding part), 59B, 59C... guiding part (second guiding part), 510, 511... visual recognition part (first visual recognition part), 512A, 512B... visual recognition part (second visual recognition part), 520, 521... third guide, 540, 540B... guide cover part, 541... locking part, 6... cutting part, 60... fixed blade part, 60a... opening, 61... movable blade part, 62... transmission mechanism, 7... twisting part, 70... engaging part, 71... operating part, 8... driving part, 80... twisting motor, 81... speed reducer, 82... rotating shaft, 83... moving member, 9A, 9B... contact member, 90A, 90B... shaft, 91A, 91B... abutting part, 92A... connecting part, 93A... displacement part, 100A... control part, 301... first main body part, 302... second main body part, 303... connecting part, 304h... handle part, 304L, 304R... grip part, 304t... operating part, W... wire

Claims

1. A main body portion, A feeding portion capable of feeding a wire in a forward direction and a reverse direction, A first guide having a groove portion with a guide surface that is attached to one end of the main body portion with the proximal end side, extends in the first direction from the main body portion, and slidably contacts and guides the wire fed by the feeding portion, and a first guiding portion on the distal end side along the first direction, A second guide that is arranged at an interval for inserting a bundling object in a second direction orthogonal to the first direction with respect to the first guide, and guides the wire fed by the feeding portion, A twisting portion that twists the wire guided by the first guide and the second guide, A regulating portion provided on the distal end side of the first guide, having a part of the outer peripheral surface protruding from the guide surface, and including a regulating member that imparts a winding habit to the wire fed in the forward direction by the feeding portion, The first guiding portion is composed of a surface inclined in a direction in which the distance between the first guide and the second guide approaches from the distal end side to the proximal end side along the first direction of the first guiding portion, and the entire inclined surface of the first guiding portion is provided on the distal end side of the regulating member, A bundling machine.

2. The regulating member is provided on the outer side in the radial direction with respect to the feeding path of the spiral wire. The bundling machine according to Claim 1.

3. The regulating member has a wire in contact with the outer peripheral surface. The bundling machine according to Claim 1 or Claim 2.

4. The regulating member is composed of a cylindrical member. The bundling machine according to any one of Claims 1 to 3.

5. The regulating portion includes another regulating member provided on the proximal end side of the first guide. The bundling machine according to any one of Claims 1 to 4.

6. The other regulating member is provided on the inner side in the radial direction with respect to the feeding path of the spiral wire. The bundling machine according to Claim 5.

7. The regulating portion includes another regulating member. With respect to the forward feeding of the wire, the other regulating member is provided on the downstream side of the other regulating member. The bundling machine according to Claim 5 or Claim 6.

8. The other regulating member is provided on the feeding path of the wire where the opening through which the wire passes is spiral. The bundling machine according to Claim 7.

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