Bundling machine

Abstract

Provided is a tying machine that can insert a reinforcing bar into an opening between a pair of guide sections even in a site where a gap between the reinforcing bar and the ground is narrow. A reinforcing bar tying machine (1A) includes a feeding section (3) that feeds wire, a guide section (5) that winds the wire fed by the feeding section around a reinforcing bar (S), a twisting section (7) that twists the wire around the reinforcing bar wound by the guide section, and an abutting section (11) that is contacted by the reinforcing bar. The guide section includes a first guide (51) that shapes the wire along the periphery of the reinforcing bar that contacts the abutting section, a second guide (52) that guides the wire shaped by the first guide to the twisting section, and an inducing section (600) that is provided on the front end side of the first guide and induces the reinforcing bar between the first guide and the second guide. The inducing section (600) is configured so that the distance from the abutting section (11) can be changed.

Description

Technical Field

[0001] This disclosure relates to strapping machines. Background Technology

[0002] Traditionally, a binding machine is used to insert a steel bar, which is the object to be bound, into the inside of a pair of guide parts located at the front end of the binding machine body. The pair of guide parts shape the wire and wrap it around the steel bar and twist it, thereby performing the binding action.

[0003] In order to reliably perform the binding action, it is necessary to reliably insert the reinforcing bar, which is to be bound, into the openings inside the pair of guide parts. In particular, in binding machines where the binding machine body and the handle are connected by a long strip-shaped connecting part, the guide parts are far from the operator's viewpoint, so a structure that can reliably insert the reinforcing bar into the inside of the pair of guide parts is required.

[0004] To address this issue, the following technology has been proposed. For example, a strapping machine is disclosed in which an induction section with an inclined surface is provided on the front end side of the first guide of the guide section, which can easily insert the reinforcing bar into the insertion port between the first guide and the second guide.

[0005] Prior art literature

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2020-41399

[0008] However, in the existing strapping machines disclosed in Patent Document 1 and the like, when operating in a space with a small gap between the reinforcing bar to be strapped and the ground, there is a problem that when the reinforcing bar is to be inserted into the opening inside the pair of guide parts, the front end of the guide part is in contact with the ground and the reinforcing bar cannot be inserted into the specified position in the opening between the pair of guide parts. Summary of the Invention

[0009] Therefore, the present invention is an invention that solves the above-mentioned problems, and its object is to provide a binding machine that can insert reinforcing bars into the opening between a pair of guide parts even in a space where the gap between the object to be bound, such as reinforcing bars, and the ground is small.

[0010] To address the aforementioned issues, this disclosure includes: a feeding section for conveying a thread; a guiding section for winding the thread conveyed by the feeding section around a bundled object; a twisting section for twisting the thread wound around the bundled object by the guiding section; and an abutting section for contact with the bundled object. The guiding section includes: a first guiding member for shaping the thread around the bundled object that contacts the abutting section; a second guiding member for guiding the thread shaped by the first guiding member toward the twisting section; and an inducing section provided at least one of the first and second guiding members for inducing the bundled object between the first and second guiding members. The inducing section is configured such that the distance between it and the abutting section can be changed.

[0011] Invention Effects

[0012] According to this disclosure, the distance between the guide portion and the contact portion can be changed, so that even when the distance between the object to be tied and the ground is small, the object to be tied can be inserted between a pair of guide portions. Attached Figure Description

[0013] Figure 1A This is a side view of the rebar tying machine according to the first embodiment.

[0014] Figure 1B This is a side view of the rebar tying machine according to the first embodiment.

[0015] Figure 1C This is a front view of the rebar tying machine according to the first embodiment.

[0016] Figure 2A This is a side view showing the internal structure of the rebar tying machine according to the first embodiment.

[0017] Figure 2B This is a side view showing the internal structure of the rebar tying machine according to the first embodiment.

[0018] Figure 3 This is a side view showing the main parts of the internal structure of the rebar tying machine according to the first embodiment.

[0019] Figure 4A This is a side view of the guide section of the rebar tying machine according to the first embodiment.

[0020] Figure 4B This is a side view of the guide section of the rebar tying machine according to the first embodiment.

[0021] Figure 4C This is a side view of the guide section of the rebar tying machine according to the first embodiment.

[0022] Figure 5This is an exploded perspective view of the guide section of the rebar tying machine according to the first embodiment.

[0023] Figure 6 This is a diagram showing the operation of the rebar tying machine according to the first embodiment.

[0024] Figure 7 This is a side view of the guide section of a rebar tying machine, a variation of the first embodiment.

[0025] Figure 8A This is a side view of the guide section of the rebar tying machine according to the second embodiment.

[0026] Figure 8B This is a side view of the guide section of the rebar tying machine according to the second embodiment.

[0027] Figure 9 This is an exploded perspective view of the guide section of the rebar tying machine according to the second embodiment.

[0028] Figure 10A This is a side view of the guide section of the rebar tying machine according to the third embodiment.

[0029] Figure 10B This is a side view of the guide section of the rebar tying machine according to the third embodiment.

[0030] Figure 10C This is a side view of the guide section of the rebar tying machine according to the third embodiment.

[0031] Figure 11 This is an exploded perspective view of the guide section of the rebar tying machine according to the third embodiment.

[0032] Figure 12A This is a side view of the guide section of the rebar tying machine according to the fourth embodiment.

[0033] Figure 12B This is a side view of the guide section of the rebar tying machine according to the fourth embodiment.

[0034] Figure 12C This is a side view of the guide section of the rebar tying machine according to the fourth embodiment.

[0035] Figure 13 This is an exploded perspective view of the guide section of the rebar tying machine according to the fourth embodiment.

[0036] Label Explanation

[0037] 1A, 1B, 1C, 1D Rebar Binding Machines (Binding Machines)

[0038] 3 feed section

[0039] 5. Guide component section

[0040] 7. Twist section

[0041] 8 drive units

[0042] 11 Contact Department

[0043] 51 First Guide

[0044] 52 Second Guide

[0045] 70-card combination

[0046] 80 Torque Motor

[0047] 304hL and 304hR handles (grip)

[0048] 600, 700, 800, 900 guiding sections

[0049] 670 screw (retaining member)

[0050] 810 First Card Unit

[0051] 820 Second Card Unit

[0052] 850b head (locking part)

[0053] 910 First Card Unit

[0054] 920 Second Card Unit

[0055] 930b head (locked part)

[0056] Ax axis

[0057] G Ground

[0058] P1 First Position

[0059] P2 Second Position

[0060] S-shaped reinforcing bars (for binding objects)

[0061] W silk thread. Detailed Implementation

[0062] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0063] [First Implementation Method]

[0064] (Structural example of rebar tying machine 1A)

[0065] Figure 1A as well as Figure 1B This is a side view of the rebar tying machine 1A according to the first embodiment. Figure 1C This is a front view of the rebar tying machine 1A according to the first embodiment. Figure 2A as well as Figure 2BThis is a side view showing the internal structure of the rebar tying machine 1A according to the first embodiment. Figure 3 This is a side view showing the main parts of the internal structure of the rebar tying machine 1A shown in Figure 2. Figures 4A to 4C This is a side view showing an example of the structure of the induction unit 600 in the first embodiment. Figure 4A This illustrates a scenario where work is being carried out in a space with a wide gap between the ground G (which acts as an obstacle) and the reinforcing steel S. Figure 4C This illustrates a situation where work is being carried out in a narrow space between the ground G (which acts as an obstacle) and the reinforcing steel S. Figure 5 This is an exploded perspective view of the induction section 600 of the first embodiment.

[0066] The rebar tying machine 1A ties the rebar S under the operator's feet; therefore, the guide part 5 is oriented downwards, and it is used while the operator is standing. The rebar tying machine 1A... Figures 1A to 1C As shown, the machine includes a first main body 301 configured for hand gripping, a second main body 302 with a mechanism for binding the reinforcing bars S with thread W, and a long strip-shaped connecting part 303 connecting the first main body 301 and the second main body 302. The first main body 301 has a pair of handles 304hL and 304hR as an example of a grip that can be held by an operator. Furthermore, a power switch (not shown) is provided in the first main body 301 for operating the power supply of the reinforcing bar binding machine 1A to be turned on or off.

[0067] Second main body 302 Figure 2A as well as Figure 3 As shown, the second main body 302 includes a storage section 2 that houses a rotatable spool 20 containing a filament W, and a feed section 3 that feeds the filament W wound on the spool 20 housed in the storage section 2. Furthermore, the second main body 302 includes a guide section 5 that shapes the filament W fed by the feed section 3 around the reinforcing bar S and guides the shaped filament W towards the twisting section 7. The second main body 302 also includes a cutting section 6 for cutting the filament W, a twisting section 7 for twisting the filament W wound around the reinforcing bar S by the guide section 5, and a drive section 8 for driving the cutting section 6 and the twisting section 7.

[0068] The rebar tying machine 1A has a guide section 5 provided on one side of the second main body 302. The rebar tying machine 1A, by connecting the first main body 301 and the second main body 302 with a connecting section 303, has a shape that extends further between the guide section 5 and the handle sections 304hL and 304hR compared to a rebar tying machine without a connecting section 303. In this embodiment, the side where the guide section 5 is provided is defined as the front.

[0069] like Figure 3As shown, the storage section 2 is configured to allow for the assembly, disassembly, and support of the wire reel 20. The feeding section 3 includes a pair of feeding gears 30 as feeding members. The feeding section 3 feeds the wire W by rotating the feeding gears 30 using a motor (not shown) while the wire W is held between the pair of feeding gears 30. The feeding section 3 can feed the wire W in both the forward direction (indicated by arrow F) and the reverse direction (indicated by arrow R) depending on the rotation direction of the feeding gears 30.

[0070] The cutting section 6 is located downstream of the feed section 3, conveying the thread W in the positive direction relative to the arrow F. The cutting section 6 includes a fixed blade section 60 and a movable blade section 61 that cuts the thread W in cooperation with the fixed blade section 60. Furthermore, the cutting section 6 includes a transmission mechanism 62 that transmits the operation of the drive section 8 to the movable blade section 61.

[0071] The fixed blade part 60 has an opening 60a through which the thread W passes. The movable blade part 61 cuts the thread W passing through the opening 60a of the fixed blade part 60 by rotating around the fixed blade part 60.

[0072] And, as Figure 3 as well as Figure 4A As shown, the guide section 5 winds the wire W, which is conveyed by the feed section 3, around the reinforcing bar S. The guide section 5 includes a first guide 51 that shapes and guides the wire W around the reinforcing bar S that contacts the contact section 11 (described later), a second guide 52 that guides the wire W shaped by the first guide 51 toward the twist section 7, and a guide section 600 that guides the reinforcing bar S toward the insertion port (opening) 53. It should be noted that details about the guide section 600 will be described later.

[0073] The first guide member 51 is mounted on the front end of the second main body 302 and extends in the front-rear direction, i.e., the first direction, indicated by arrow A1. In the first guide member 51, the side mounted on the second main body 302 is designated as the base end side, and the side extending from the second main body 302 to the front side is designated as the front end side. The base end side is mounted to the second main body 302 by screws or the like. Furthermore, the first guide member 51 includes a groove 51h, which has a guide surface 51g for sliding contact with the wire W conveyed by the feed unit 3.

[0074] The first guide member 51 has a limiting part 40. The first limiting member of the limiting part 40 is composed of the aforementioned fixed blade part 60. Furthermore, the limiting part 40 is conveyed in the positive direction relative to the thread W indicated by arrow F, and a limiting member 42 is provided downstream of the fixed blade part 60, and a limiting member 43 is provided downstream of the limiting member 42. The limiting members 42 and 43 are composed of cylindrical members, and the thread is in contact with the outer peripheral surface. Thus, the thread W conveyed by the feed part 3 passes through while in contact with the fixed blade part 60, the limiting member 42, and the limiting member 43, thereby forming a curled shape for the thread W.

[0075] The limiting part 40 is equipped with a transmission mechanism 44 that transmits the action of the driving part 8 to the limiting member 42. The limiting member 42 is located at the point of contact with the wire W when the wire W is fed in the positive direction by the feed part 3 and the wire W is formed into a coil shape. When the wire W is fed in the opposite direction and the wire W is wound around the reinforcing bar S, it can move to a position where it is not in contact with the wire W.

[0076] The second guide 52 is installed at the front end of the second main body 302. The second guide 52 is disposed opposite to the first guide 51 in a second direction, which is orthogonal to the first direction and is indicated by arrow A2. The first guide 51 and the second guide 52 are spaced apart by a predetermined interval along the second direction, and an insertion port 53 for inserting and removing the reinforcing bar S is formed between the first guide 51 and the second guide 52.

[0077] The second guide 52 is rotatable relative to the second main body 302 with axis 52b as the fulcrum. The second guide 52 is movable in the second direction indicated by arrow A2, towards the first guide 51 and away from the first guide 51.

[0078] The second guide 52 is linked to a pair of contact members 9L and 9R, and can move between an open position relative to the first guide 51 and a closed position closer to the first guide 51 by rotation about the shaft 52b. When the second guide 52 is in the open position, the gap between the first guide 51 and the second guide 52 increases, making it easier to insert the reinforcing bar into the insertion port 53. The second guide 52 is held in the open position by a force-applying member 54, such as a torsion spring, which applies force in the direction of movement toward the open position.

[0079] Twist 7 Figure 3The diagram shows an engaging part 70 for engaging the wire W and a working part 71 for operating the engaging part 70. The engaging part 70 forms a first passage for the wire W fed by the feed part 3 to the cutting part 6, and a second passage for the wire W formed into a coil shape by the limiting part 40 and guided by the guide part 5 to the twisting part 7. The engaging part 70 rotates due to the action of the working part 71, thereby twisting the wire W wound around the reinforcing bar S.

[0080] Drive unit 8 Figure 2A as well as Figure 3 The device shown includes a torsion motor 80 that drives the torsion section 7, a speed reducer 81 that reduces speed and amplifies torque, a rotating shaft 82 that is driven and rotated by the torsion motor 80 via the speed reducer 81, and a moving member 83 that transmits driving force to the cutting section 6 and the limiting member 42. The torsion section 7 and the driving section 8 are arranged coaxially with the rotation centers of the rotating shaft 82, the working section 71, and the engaging section 70. The rotation center of the rotating shaft 82 and the working section 71 and the engaging section 70 is referred to as the axis Ax. In this example, the first direction indicated by arrow A1 is the direction along the axis Ax.

[0081] The drive unit 8 causes the working part 71 to move axially along the rotating shaft 82 by rotating the rotating shaft 82. By moving the working part 71 axially along the rotating shaft 82, the engaging part 70 holds the front end of the thread W, which is guided to the twisting part 7 by the guide part 5.

[0082] The drive unit 8 and the working unit 71 move axially along the rotation axis 82, and the moving member 83 moves axially along the rotation axis 82. The movement of the moving member 83 is then transmitted from the transmission mechanism 44 to the limiting member 42, which moves to a position where it is not in contact with the thread. Furthermore, the movement of the working unit 71 along the rotation axis 82 transmits the movement of the moving member 83 from the transmission mechanism 62 to the movable cutter unit 61, which then cuts the thread W.

[0083] The drive unit 8 rotates the working part 71, which moves along the axial direction of the rotating shaft 82, by rotating the rotating shaft 82. The working part 71 rotates around the axis of the rotating shaft 82 and uses the engaging part 70 to twist the thread W.

[0084] Furthermore, the rebar tying machine 1A has contact components 9L and 9R, connecting rod components 96, and abutment part 11.

[0085] Contact components 9L and 9R are shown in Figure 1 and Figure 2AThe binding object, i.e., the reinforcing bar S, is inserted into the insertion port 53 between the first guide 51 and the second guide 52, as shown in the figure. A contact member 9L is provided on one side of the second main body 302, and a contact member 9R is provided on the other side of the second main body 302. The contact members 9L and 9R are configured to be movable along a first direction indicated by arrow A1, in a standby position protruding from the abutment portion 11 towards the insertion port 53 (see reference). Figure 4B The working position (refer to) is close to the contact part 11 and moves the second guide 52 toward the closed position. Figure 4C Move between ).

[0086] The linkage member 96 transmits the motion of the contact members 9L and 9R to the second guide member 52. When the contact members 9L and 9R move to the working position, the linkage member 96 rotates around the axis 97 as the fulcrum, thereby causing the second guide member 52 to move to the closed position, which narrows the opening width of the insertion port 53.

[0087] The abutment portion 11 is installed from the front end of the second main body portion 302 to the left and right sides of the second main body portion 302, covering the front end of the second main body portion 302. When the contact members 9L and 9R, pressed by the reinforcing bar S of the insertion port 53, move to the working position, the reinforcing bar S, etc., comes into contact with the abutment portion 11. The abutment portion 11 is made of metal sheet or the like, and is shaped to cover part or all of the front end of the second main body portion 302 and a portion of the left and right sides of the front of the second main body portion 302 between the base end side of the first guide member 51 and the base end side of the second guide member 52. The second main body portion 302 is made of resin, while the abutment portion 11 is made of metal, thereby reducing wear on the abutment portion 11 even when the contact members 9L and 9R and the reinforcing bar S come into contact with it.

[0088] (Structural example of the induction section 600)

[0089] Next, an example of the structure of the induction unit 600 in the first embodiment will be described.

[0090] Induction section 600 Figure 4A As shown, the guide section 600 is located at the front end of the first guide member 51, and picks up the bundled rebar S and guides it into the insertion / extraction port 53 between the first guide member 51 and the second guide member 52. The guide section 600 has a front end portion 600a that is configured to contact the ground G and a guide surface 600b located on the side opposite to the second guide member 52 (the insertion / extraction port 53 side). The front end portion 600a is formed, for example, in a curved shape rather than an edge shape to avoid damaging the floor surface of the work area. The guide surface 600b is inclined such that the opening width of the insertion / extraction port 53 widens from the base end side of the guide section 600 toward the front end side, making it easy to pick up the rebar S.

[0091] Furthermore, the guide unit 600 is configured such that when working in a space with a narrow gap between the ground G (which is an obstacle) and the reinforcing bar S, the front end 600a rotates upon contact with the ground G, thereby changing the amount of protrusion relative to the first guide member 51. In other words, the guide unit 600 is configured to change the distance between itself and the contact portion 11 of the second main body 302 according to the gap between the reinforcing bar S (which is the object to be tied) and the ground G.

[0092] Specifically, such as Figure 4A As shown, when working in a space with a wide gap between the reinforcing bar S and the ground G, the guide part 600 is located at a first position P1 where the distance between the front end 600a and the abutment part 11 is a first distance D1, and the protrusion of the guide part 600 relative to the first guide member 51 increases. In contrast, as... Figure 4C As shown, when working in a space with a narrow gap between the reinforcing bar S and the ground G, the guide part 600 rotates to a second position P2 where the distance between the forward end 600a and the abutment part 11 is a second distance D2 shorter than the first distance D1, and the protrusion of the guide part 600 relative to the first guide member 51 becomes smaller.

[0093] Induction section 600 Figure 5 As shown, it is composed of, for example, a pair of plates arranged opposite each other and embedded on the outside of the guide cover 51b. The guide cover 51b, like the guide portion 600, is also composed of, for example, a pair of plates arranged opposite each other and embedded on the outside of the guide arm 51a. It should be noted that the guide arm 51a and the guide cover 51b constitute the first guide member 51.

[0094] An elongated hole 610 is formed in the guide section 600 for guiding the movement between a first position P1 and a second position P2. The elongated hole 610 is formed in a generally arc shape, which limits the movement range of the guide section 600 between the first position P1 and the second position P2.

[0095] Pin 630 is inserted from one side into the elongated hole 610 of the guide section 600, the hole 500 of the guide cover 51b, and the hole 502 of the guide arm 51a. A stop 632 is installed at the other end of pin 630 to prevent pin 630 from falling off axially. Furthermore, pin 640 is installed between the plates of guide cover 51b to support the torsion coil spring 650 described later.

[0096] Pin 620 is inserted from one side into hole 660 of guide section 600 and hole 504 of guide cover 51b. A stop 622 is installed at the other end of pin 620 to prevent it from axially dislodging. Guide section 600 rotates about pin 620 as a fulcrum and along elongated hole 610 relative to guide cover 51b (first guide 51). Front end 600a is located closer to insertion / removal port 53 than pin 620, which serves as the fulcrum for rotation.

[0097] A torsion spring 650 is provided between the plates of the guide cover 51b. A pin 620 is inserted into the central axis of the torsion spring 650, and the fixing point of the torsion spring 650 is mounted on the pin 640. The load point of the torsion spring 650 abuts against the actuating part 602 located on the opposite side of the guiding surface 600b. The guiding part 600 rotates clockwise from the torsion spring 650 in the direction of arrow A3 (refer to the guide surface 600b). Figure 4B Apply force to maintain the first position P1.

[0098] (Example of the operation of rebar tying machine 1A)

[0099] Next, the action of binding the steel bar S with wire W using the steel bar binding machine 1A will be explained. Figure 6 This is a diagram illustrating an example of the operation of the rebar tying machine 1A according to the first embodiment. Hereinafter, refer to... Figures 1A to 6 It also describes the situation of binding operations being carried out in a narrow work area where the gap between the steel bar S and the ground G is small.

[0100] The operator holds handles 304hR and 304hL in a standing position, aligning guide part 5 with, for example, the intersection of two steel bars S. Then, as... Figure 4B As shown, by moving the rebar tying machine 1A in the direction of inserting the rebar S into the insertion port 53, the front end 600a of the guide section 600 is pressed against the ground G.

[0101] Through this pressing action, such as Figure 4C as well as Figure 5 As shown, the front end portion 600a of the guide portion 600 overcomes the elastic force of the torsion coil spring 650 and moves toward the second main body portion 302. Specifically, the guide portion 600 rotates in the direction of arrow A4 with pin 620 as the fulcrum and along the elongated hole 610, and the front end portion 600a of the guide portion 600 moves from the first position P1 to the second position P2. As a result, the amount of protrusion of the guide portion 600 from the front end side of the first guide member 51 can be reduced, and the reinforcing bar S can be inserted into the insertion / removal port 53.

[0102] like Figure 4C and Figure 6As shown, when the reinforcing bar S is inserted into the insertion port 53, and the reinforcing bar binding machine 1A presses the reinforcing bar S against the contact member 9L by moving the machine in the direction of inserting the reinforcing bar S into the insertion port 53, the contact member 9L moves towards the working position. Simultaneously, the connecting rod member 96 rotates, and the second guide member 52 moves from the open position towards the closed position approaching the first guide member 51.

[0103] When the second guide 52 moves to the closed position, the feed motor rotates in the positive direction, and the feed gear 30 rotates in the positive direction, thereby feeding the wire W in the positive direction indicated by arrow F. The wire W fed in the positive direction by the feed section 3 is bent into an arc shape by contacting the guide surface 51g of the fixed blade section 60, the limiting member 42, the limiting member 43 and the first guide 51, forming a curled shape that is roughly circular.

[0104] The coiled wire W, formed by the limiting part 40 of the first guide 51, is guided by the second guide 52 and the engaging part 70 of the twisting part 7. When the leading end of the wire W is conveyed to the predetermined position, the feed motor (not shown) stops, and the wire W is in a state of being wound around the reinforcing bar S.

[0105] After the feed motor stops, the torsion motor 80 rotates in the forward direction, and the lead end of the wire W is held by the engaging part 70 in conjunction with the movement of the working part 71. While the wire W is held by the engaging part 70, the torsion motor 80 stops, and the feed motor rotates in the reverse direction. When the feed motor rotates in the reverse direction, the feed gear 30 rotates in the reverse direction, and the wire W is fed in the opposite direction indicated by arrow R. Thus, the wire W is wound around the reinforcing bar S in a way that it is tightly wrapped around the reinforcing bar S.

[0106] When the wire W is wound around the reinforcing bar S, the feed motor stops rotating, and the torsion motor 80 rotates in the forward direction. Simultaneously, the movable cutter 61, accessible via the transfer mechanism 62 through the moving member 83, cuts the wire W.

[0107] After the thread W is cut, the motor 80 continues to rotate in the forward direction, causing the engaging part 70 to rotate and twist the thread W. When binding the thread W, the motor 80 rotates in the reverse direction. As a result, the engaging part 70 returns to its initial position, releasing the thread W. The binding action is performed through this series of actions.

[0108] After the binding action is completed, the operator moves the rebar binding machine 1A in the direction in which the rebar S is pulled out from the insertion port 53 (away from the ground G). Simultaneously, the front end 600a of the guide unit 600 moves away from the ground G, thus... Figure 4BAs shown, the guide section 600 rotates in the direction of arrow A3 with pin 620 as the fulcrum due to the force of the torsion coil spring 650, and the guide section 600 returns from the second position P2 to the first position P1. Furthermore, when the force based on the pressing contact member 9L of the rebar S is no longer applied due to the action of moving the rebar tying machine 1A in the direction of pulling the rebar S out of the insertion port 53, the second guide member 52 moves away from the first guide member 51 and returns to the open position due to the force of the force-applying member 54.

[0109] According to the first embodiment, when working in a space with a narrow gap between the reinforcing bar S and the ground G, the guiding part 600 rotates due to its pressing action against the ground G, thereby reducing the amount of protrusion of the guiding part 600 from the front end of the first guide member 51. As a result, the reinforcing bar S can be reliably inserted into the insertion / removal port 53 between the first guide member 51 and the second guide member 52, and the reinforcing bar S presses against the contact members 9L and 9R, thereby reliably initiating the binding operation.

[0110] Furthermore, in situations where the space between the reinforcing bar S and the ground G is narrow, it is necessary to remove the guide section 600 from the first guide section 51 to shorten the overall length of the guide section 5 along the axis Ax. In contrast, according to the first embodiment, the length of the guide section 600 in the axis Ax direction opposite to the abutment section 11 can be changed, thus eliminating the need to replace the guide section 600 and reducing workload. Furthermore, the loss of parts during the replacement of the guide section 600 can be avoided. Moreover, since a replacement-based mechanism is not required, the guide section 600 can be securely installed on the first guide section 51.

[0111] It should be noted that in the above embodiments, when working in a space with a narrow gap between the reinforcing bar S and the ground G, the guide part 600 is pressed against the ground G, which is an obstacle, so that the front end 600a of the guide part 600 moves from the first position P1 to the second position P2. However, in work areas where it is not recommended to let the guide part 600 contact the ground G, the operator may manually rotate the guide part 600.

[0112] For example, in work areas where curing sheets or strips (hereinafter referred to as curing sheets, etc.) are laid on concrete (ground surface G), the front end 600a of the guide part 600 may sometimes be damaged when it comes into contact with the curing sheets, etc. Therefore, in work areas where curing sheets, etc. are laid, it is necessary to carry out the binding operation without allowing the guide part 600 to come into contact with the ground surface G.

[0113] Figure 7 This is a diagram showing the usage state of the induction unit 600 in a modified example of the first embodiment.

[0114] When the gap between the reinforcing bar S and the ground surface G is narrow, and curing sheets or the like are laid on the concrete or other ground surface G, such as Figure 7 As shown, before starting the binding operation, the operator rotates the front end 600a from the first position P1 to the second position. Then, the screw 670, which serves as a retaining member, is removed from the hole 508 in the guide cover 51b (see reference). Figure 4C The removed screw 670 is installed in the hole 662 of the guide section 600 and the hole 506 of the guide cover 51b (see reference). Figure 5 Therefore, the guide part 600 is held and fixed in the second position P2. After fixing the guide part 600 in the second position P2, the guide part 5 is aligned with, for example, the intersection of two steel bars S, and the steel bars S are inserted into the insertion / extraction port 53, thereby performing the binding action. In this way, by rotating the guide part 600 before the binding action begins, damage to the curing sheet, etc., can be avoided.

[0115] Furthermore, in the above description, the reference for the distance at which the guide unit 600 can be changed is set as the contact part 11. However, the reference could also be, for example, the drive unit 8, or even the torsion motor 80. The guide unit 600 is as follows... Figure 2A as well as Figure 2B As shown, it is configured to change the distance between the steel bar S (which is the object to be tied) and the ground G, and the torsion motor 80 provided in the second main body 302.

[0116] Specifically, when working in a space with a wide gap between the reinforcing bar S and the ground G, such as Figure 2A As shown, the guide section 600 is located at a first position P1, with a distance of a first distance F1 between the front end 600a and the torsion motor 80, and the protrusion of the guide section 600 relative to the first guide member 51 is increased. In contrast, when working in a space with a narrow gap between the reinforcing bar S and the ground G, such as... Figure 2B As shown, when the guide part 600 rotates to a second position P2 where the distance between the front end part 600a and the torsion motor 80 is a second distance F2 shorter than the first distance F1, the protrusion of the guide part 600 relative to the first guide member 51 becomes smaller.

[0117] Furthermore, the reference for the distance at which the guide part 600 can be changed can replace the aforementioned contact part 11, etc., and instead use, for example, the grip part, i.e., the handle part 304hL, 304hR, as the reference. The guide part 600, as... Figure 1A as well as Figure 1B As shown, it is configured to change the distance between the gripping part, i.e. the handle part 304hL, 304hR, of the first main body 301 according to the interval between the steel bar S, which is the object to be tied, and the ground G.

[0118] Specifically, when working in a space with a wide gap between the reinforcing bar S and the ground G, such as Figure 1A As shown, the guide part 600 is located at a first position P1, with the distance between the front end 600a and the handle parts 304hL and 304hR being the first distance E1. The protrusion of the guide part 600 relative to the first guide member 51 is increased. In contrast, when working in a space with a narrow gap between the reinforcing bar S and the ground G, such as... Figure 1B As shown, when the guide part 600 rotates to a second position P2 where the distance between the front end part 600a and the handle parts 304hL and 304hR is a second distance E2 shorter than the first distance E1, the protrusion of the guide part 600 relative to the first guide member 51 becomes smaller.

[0119] Furthermore, the reference for the distance at which the guide portion 600 can be changed can replace the aforementioned abutment portion 11, and can be, for example, the front end 51a1 of the first guide member, i.e., the guide arm 51a, as the reference. The guide portion 600, as... Figure 4A as well as Figure 4C As shown, it is configured to change the distance between the front end 51a1 of the guide arm 51a provided on the second main body 302 and the distance between the steel bar S, which is the object to be tied, and the ground G, according to the distance between them.

[0120] Specifically, when working in a space with a wide gap between the reinforcing bar S and the ground G, such as Figure 4A As shown, the guide portion 600 is located at a first position P1 where the distance between the front end portion 600a and the front end portion 51a1 of the guide arm 51a is a first distance H1, and the protrusion of the guide portion 600 relative to the first guide member 51 is increased. In contrast, when working in a space with a narrow gap between the reinforcing bar S and the ground G, such as... Figure 4C As shown, when the guide part 600 rotates to a second position P2 where the distance between the front end part 600a and the front end part 51a1 of the guide arm 51a is a second distance H2 shorter than the first distance H1, the protrusion of the guide part 600 relative to the first guide member 51 becomes smaller.

[0121] [Second Implementation]

[0122] In the rebar tying machine 1B of the second embodiment, the point at which the guide 700 is configured to move substantially parallel to the axis Ax differs from the guide 600 of the rebar tying machine 1A of the first embodiment. In the second embodiment, for structures and operations common to the first embodiment, repeated descriptions are omitted by referring to the description of the first embodiment.

[0123] (Structural example of the induction section 700)

[0124] Figure 8A as well as Figure 8B This is a side view showing an example of the structure of the guide unit 700 in the second embodiment. Figure 9 This is an exploded perspective view of the induction section 700 of the second embodiment.

[0125] Induction section 700 Figure 8A As shown, the guide section 700 is located at the front end of the first guide member 51, and picks up the bundled reinforcing bar S and guides it into the insertion / extraction port 53 between the first guide member 51 and the second guide member 52. The guide section 700 has a front end portion 700a that is configured to contact the ground G and a guide surface 700b provided on the side opposite to the second guide member 52. The guide surface 700b is inclined such that the opening width of the insertion / extraction port 53 widens from the base end side of the guide section 700 toward the front end side, making it easy to pick up the reinforcing bar S.

[0126] Furthermore, the guide unit 700 is configured such that, when working in a space where the gap between the ground G (which is an obstacle) and the reinforcing bar S is small, the front end 700a slides approximately parallel to the axis Ax after hitting the ground G, thus changing the amount of protrusion relative to the first guide member 51. In other words, the guide unit 700 is configured to change the distance between itself and the contact portion 11 of the second main body 302 according to the gap between the reinforcing bar S (the object to be tied) and the ground G.

[0127] Specifically, when working in a space with a wide gap between the reinforcing bar S and the ground G, such as Figure 8A As shown, the guide portion 700 is located at a first position P1 where the distance between the front end portion 700a and the abutment portion 11 is a first distance D1, and the protrusion of the guide portion 700 relative to the first guide member 51 is increased. In contrast, when working in a space with a narrow gap between the reinforcing bar S and the ground G, such as... Figure 8B As shown, since the front end portion 700a of the guide portion 700 pushes against the ground G, the guide portion 700 slides to a second position P2 where the distance between the front end portion 700a and the abutment portion 11 is a second distance D2 shorter than the first distance D1, and the protrusion of the guide portion 700 relative to the first guide member 51 becomes smaller.

[0128] like Figure 9 As shown, the guide portion 700 is composed of, for example, a pair of flat plates arranged opposite each other, embedded in the outer side of the guide covers 51b, 51b. The guide covers 51b, 51b are, for example, a pair of flat plates arranged opposite each other, connected by pins 530, 532 via the guide arm 51a. It should be noted that the guide arm 51a and the guide cover 51b constitute the first guide member 51.

[0129] The guide covers 51b and 51b respectively have a first elongated hole 522 and a second elongated hole 520 for supporting the guide portion 700 so that it can move between the first position P1 and the second position P2. The first elongated hole 522 and the second elongated hole 520 are formed to be substantially parallel to the axis Ax and arranged in the front-rear direction, thereby limiting the range of movement of the guide portion 700 between the first position P1 and the second position P2.

[0130] Pin 720 is inserted from one side into hole 740 of guide section 700 and second elongated hole 520 of guide cover 51b, 51b from the other side. Stops 722 and 723 are respectively installed at both ends of pin 720 to prevent pin 720 from falling off axially.

[0131] Pin 710 is inserted into the first elongated hole 522 of guide cap 51b from one side to the other. The portion of pin 710 protruding from the guide cap 51b engages (fits) with the recess 742 of guide portion 700. Stops 712 and 713 are respectively installed at both ends of pin 710 inserted into the first elongated hole 522 to prevent pin 710 from falling off axially.

[0132] A tension spring 730 is provided between guide covers 51b and 51b. One end of the tension spring 730 is mounted to pin 710, and the other end of the tension spring 730 is mounted to pin 530. Thus, as Figure 8A as well as Figure 9 As shown, the pin 710 is subjected to force by the tension spring 730 in the direction of arrow B1 on the side opposite to the contact member 9L, and the guide portion 700 that engages with the pin 710 is pressed in the direction of arrow B1, thereby maintaining it in the first position P1.

[0133] (Example of the operation of the guide unit 700)

[0134] Next, an example of the operation of the guide unit 700 in the second embodiment will be described. It should be noted that, under normal conditions, such as... Figure 8A As shown, the induction part 700 is located in the first position P1 due to the force of the tension spring 730.

[0135] When performing binding operations in situations where the gap between the ground G and the reinforcing bars S is narrow, in order to reduce the amount of protrusion from the front end of the first guide 51 in the direction of the axis Ax of the guide 700, the guide 700 is slidably moved from the first position P1 to the second position P2. Specifically, the operator aligns the guide 5 with, for example, the intersection of two reinforcing bars S, and presses the front end 700a of the guide 700 onto the ground G by moving the reinforcing bar binding machine 1B in the direction of inserting the reinforcing bar S into the insertion port 53.

[0136] Through this pressing action, such as Figure 8BAs shown, the pin 710 is forced in the direction of arrow B2 by the recess 742 of the guide portion 700, and the tension spring 730 is extended, thereby moving the pin 710 along the first elongated hole 522. The guide portion 700 moves relative to the first guide member 51 in the direction of arrow B2 on the contact member 9L side, and the front end portion 700a moves from the first position P1 to the second position P2. As a result, the amount of protrusion of the guide portion 700 from the front end side of the first guide member 51 in the axial direction Ax can be reduced, and the reinforcing bar S can be inserted into the insertion / extraction port 53 and reliably pressed against the contact member 9L.

[0137] On the other hand, upon completion of the binding action of the reinforcing bar S, the reinforcing bar binding machine 1B is lifted away from the ground G. As the front end 700a separates from the ground G, the tension spring 730 is compressed and returns to its original state, and the pin 710 moves towards arrow B1 (refer to...). Figure 8A A force is applied in the direction of arrow B1. Accompanying this, the guide 700 and the pin 710 slide relative to the first guide 51 in the direction of arrow B1, and the front end 700a returns from the second position P2 to the first position P1.

[0138] According to the second embodiment, the same effect as the first embodiment can be achieved. Specifically, when working in a space with a small gap between the reinforcing bar S and the ground G, the guiding part 700 slides as it is pressed against the ground G, thereby reducing the amount of protrusion of the guiding part 700 from the front end of the first guide member 51. As a result, the reinforcing bar S can be reliably inserted into the insertion / removal port 53 between the first guide member 51 and the second guide member 52, and the contact members 9L and 9R can be pressed by the reinforcing bar S.

[0139] It should be noted that in the second embodiment, the reference for the distance at which the guide 700 can be changed is set as the contact part 11. However, it is not limited to this. The reference can also be set as the drive part 8, the grip part, i.e. the handle part 304hL, 304hR, or the front end part 51a1 of the guide arm 51a, as described in the first embodiment.

[0140] [Third Implementation Method]

[0141] In the rebar tying machine 1C of the third embodiment, the point at which the guide section 800 is configured to be manually rotatable relative to a shaft (pin 860) provided in a direction orthogonal to the axis Ax differs from the guide section 600 of the rebar tying machine 1A of the first embodiment. It should be noted that in the third embodiment, for structures and operations common to the first embodiment, repeated descriptions are omitted by referring to the description of the first embodiment.

[0142] (Structural example of the induction section 800)

[0143] Figures 10A to 10C This is a side view showing an example of the structure of the induction unit 800 in the third embodiment. Figure 11 This is an exploded perspective view of the induction section 800 of the third embodiment.

[0144] Induction section 800 Figure 10A As shown, the guide section 800 is located at the front end of the first guide member 51, and picks up the bundled reinforcing bar S and guides it into the insertion / extraction port 53 between the first guide member 51 and the second guide member 52. The guide section 800 has a front end portion 800a that is configured to contact the ground G and a guide surface 800b provided on the side opposite to the second guide member 52. The guide surface 800b is inclined such that the opening width of the insertion / extraction port 53 widens from the base end side of the guide section 800 toward the front end side, making it easy to pick up the reinforcing bar S.

[0145] Furthermore, the guide unit 800 is configured such that, when working in a space where the gap between the ground G (which serves as an obstacle) and the reinforcing bar S is narrow, the operator can manually rotate the guide unit 800 around an axis (pin 860) orthogonal to the axis Ax, thereby changing the amount of protrusion relative to the first guide member 51. In other words, the guide unit 800 is configured to change the distance between itself and the contact portion 11 of the second main body 302 according to the gap between the reinforcing bar S (the object to be tied) and the ground G.

[0146] Specifically, when working in a space with a wide gap between the reinforcing bar S and the ground G, the guide section 800, as... Figure 10A As shown, at the first position P1, where the distance between the front end 800a and the abutment portion 11 is the first distance D1, the protrusion of the guide portion 800 relative to the first guide member 51 increases. In contrast, when working in a space with a narrow gap between the reinforcing bar S and the ground G, such as... Figure 10C As shown, when the guide part 800 rotates to a second position P2 where the distance between the front end part 800a and the abutment part 11 is a second distance D2 shorter than the first distance D1, the protrusion of the guide part 800 relative to the first guide member 51 becomes smaller.

[0147] like Figure 11 As shown, the guide portion 800 is composed of, for example, a pair of plates arranged opposite each other, embedded on the outside of the guide cover 51b. The guide cover 51b, like the guide portion 800, is also composed of, for example, a pair of plates arranged opposite each other, embedded on the outside of the guide arm 51a. It should be noted that the guide arm 51a and the guide cover 51b constitute the first guide member 51.

[0148] The guide portion 800 has a first engaging portion 810 that can engage with the pin 850 (engaged portion) described later when in the first position P1, and a second engaging portion 820 that can engage with the pin 850 when in the second position P2. The first engaging portion 810 and the second engaging portion 820 are formed, for example, by recesses, on the end edges of the guide portion 800.

[0149] An elongated hole 540 is formed in the guide cover 51b for moving the guide portion 800 to a position that can release the engagement state of the first engaging portion 810 and the second engaging portion 820. The elongated hole 540 is composed of a first hole 540a having a size that allows the head (engaged portion) 850b of the pin 850 to be inserted and a second hole 540b for supporting the shaft portion 850a of the pin 850 so that it can move.

[0150] Pin 880 is inserted into hole 544 of guide cover 51b from one side to the other. The part of pin 880 exposed on the inside of guide cover 51b engages (fits) in recess 542 of guide arm 51a.

[0151] Pin 860 is inserted from one side into hole 830 of guide section 800 and hole 546 of guide cover 51b. A stop 862 is installed at the other end of pin 860 to prevent pin 860 from falling off axially. Thus, guide section 800 can rotate relative to guide cover 51b with pin 860 as fulcrum.

[0152] Pin 850 is inserted into the elongated hole 540 of guide cover 51b from one side to the other. The shaft portion 850a of pin 850 is supported so that it can move along the elongated hole 540. The head 850b of pin 850 is mounted on guide cover 51b in such a way that it protrudes from the left and right sides of guide cover 51b so that the operator can hold it.

[0153] A tension spring 870 is provided between the plates of the guide cover 51b. One end of the tension spring 870 is mounted to a pin 860, and the other end of the tension spring 870 is mounted to a pin 850. Thus, the pin 850 is forced by the elastic force of the tension spring 870 toward the first engaging portion 810 and the second engaging portion 820 of the guide portion 800, maintaining the engagement state based on the pin 850 opposite to the first engaging portion 810 and the like of the guide portion 800.

[0154] (Example of the operation of the guide unit 800)

[0155] Next, an example of the operation of the guiding unit 800 in the third embodiment will be described. It should be noted that, under normal conditions, such as... Figure 10A As shown, the induction part 800 is engaged with the first engaging part 810 by the pin 850 and is in the first position P1.

[0156] When performing binding operations in situations where the gap between the ground G and the reinforcing bar S is narrow, in order to reduce the amount of protrusion from the front end of the first guide 51 in the direction of the axis Ax of the guide 800, the guide 800 is manually rotated from the first position P1 to the second position P2.

[0157] The operator holds the head 850b of pin 850, such as Figure 10A As shown, the force of the tension spring 870 is overcome, pulling the pin 850 towards the direction of arrow C1 on the contact member 9L side of the guide portion 800. Consequently, the pin 850 moves along the elongated hole 540 in the direction of arrow C1, as... Figure 10B As shown, the first engaging part 810 of the guide part 800 is released from the engaging state relative to the pin 850.

[0158] Next, the workers, as Figure 10B as well as Figure 10C As shown, the state of pulling pin 850 is maintained, that is, the state of the first engaging part 810 is released, so that the guiding part 800 rotates the front end 800a counterclockwise (in the direction of arrow C3) toward the insertion port 53 with pin 860 as the fulcrum.

[0159] After the second engaging portion 820 is moved to the engaging position of the pin 850, the head 850b of the pin 850 is released or the force holding the head 850b of the pin 850 is released. As a result, the tension spring 870 is compressed and returns to its original state, and the pin 850 moves toward the second engaging portion 820 in the direction of arrow C2, thereby engaging with the second engaging portion 820. Through this operator's operation, the front end 800a is moved from the first position P1 to the second position P2, thereby reducing the amount of protrusion from the front end of the first guide member 51 in the direction of the axis Ax of the guide portion 800, allowing the reinforcing bar S to be inserted into the insertion / removal port 53 and reliably pressing the contact member 9L.

[0160] According to the third embodiment, the same effect as the first embodiment can be achieved. For example, when working in a space with a small gap between the reinforcing bar S and the ground G, the guide 800 can be manually rotated before the binding operation, thereby reducing the amount of protrusion of the guide 800 from the front end of the first guide 51. As a result, the reinforcing bar S can be reliably inserted into the insertion port 53 between the first guide 51 and the second guide 52, and the contact members 9L and 9R can be pressed by the reinforcing bar S.

[0161] It should be noted that in the third embodiment, the reference for the distance at which the guide 800 can be changed is set as the contact part 11. However, it is not limited to this. The reference can also be set as the drive part 8, the grip part, i.e. the handle part 304hL, 304hR, or the front end part 51a1 of the guide arm 51a, as described in the first embodiment.

[0162] [Fourth Implementation Method]

[0163] In the rebar tying machine 1D of the fourth embodiment, the guide section 900 differs from the guide section 600 of the rebar tying machine 1A of the first embodiment in that it is configured to be manually rotated relative to a shaft (pin 950) provided in a direction orthogonal to the axis Ax. It should be noted that in the fourth embodiment, for structures and operations common to the first embodiment, repeated descriptions are omitted by referring to the description of the first embodiment.

[0164] (Structural example of the induction section 900)

[0165] Figures 12A-12C This is a side view showing an example of the structure of the guide unit 900 in the fourth embodiment. Figure 13 This is an exploded perspective view of the induction section 900 according to the fourth embodiment.

[0166] Induction section 900 Figure 12A As shown, the guide section 900 is located at the front end of the first guide member 51, and picks up the bundled reinforcing bar S and guides it into the insertion / extraction port 53 between the first guide member 51 and the second guide member 52. The guide section 900 has a front end portion 900a that is configured to contact the ground G and a guide surface 900b provided on the side opposite to the second guide member 52. The guide surface 900b is inclined such that the opening width of the insertion / extraction port 53 widens from the base end side of the guide section 900 toward the front end side, making it easy to pick up the reinforcing bar S.

[0167] Furthermore, the guide unit 900 is configured such that, when working in a space where the gap between the ground G (which serves as an obstacle) and the reinforcing bar S is narrow, the operator can manually rotate the guide unit 800 around an axis orthogonal to the axis Ax (pin 950, described later) as a fulcrum, thereby changing the amount of protrusion relative to the first guide member 51. That is, the guide unit 900 is configured to change the distance between itself and the contact portion 11 provided on the second main body 302 according to the gap between the reinforcing bar S (which is the object to be tied) and the ground G.

[0168] Specifically, when working in a space with a wide gap between the reinforcing bar S and the ground G, such as Figure 12A As shown, the guide portion 900 is located at a first position P1 where the distance between the front end portion 900a and the abutment portion 11 is a first distance D1, and the protrusion of the guide portion 900 relative to the first guide member 51 is increased. In contrast, when working in a space with a narrow gap between the reinforcing bar S and the ground G, such as... Figure 12CAs shown, when the guide portion 600 rotates to a second position P2 where the distance between the front end portion 900a and the abutment portion 11 is a second distance D2 shorter than the first distance D1, the protrusion of the guide portion 900 relative to the first guide member 51 becomes smaller.

[0169] like Figure 13 As shown, the guide portion 900 has a first engaging portion 910 that can engage with the head (engaged portion) 930b formed on the pin 930 when in the first position P1, and a second engaging portion 920 that can engage with the head 930b of the pin 930 when in the second position P2. The first engaging portion 910 and the second engaging portion 920 are formed by recesses on the end edges of the guide portion 900.

[0170] An elongated hole 580 is formed in the guide cover 51b for moving the guide portion 800 to a position that can release the engagement state of the first engaging portion 810 and the second engaging portion 820. The length direction of the elongated hole 580 is approximately parallel to the axis Ax.

[0171] The guide section 900 is composed of, for example, a pair of plates arranged opposite each other, and is embedded on the outside of the guide cover 51b. The guide cover 51b, like the guide section 800, is also composed of, for example, a pair of plates arranged opposite each other and is embedded on the outside of the guide arm 51a.

[0172] Insert pin 940 into guide cover 51b. The portion of pin 940 exposed on the inside of guide cover 51b engages with recess 582 of guide arm 51a.

[0173] Pin 930 is inserted into guide cover 51b from one side to the other. A head (engaged portion) 930b with a diameter larger than the shaft portion is provided at one end of pin 930. The head 930b protrudes from one side of guide cover 51b and can be engaged by the first engaging portion 910 and the second engaging portion 920. A stop 932 to prevent pin 930 from falling off is installed at the other end of pin 930. This other end is held by a collar 933.

[0174] Pin 950 is inserted from one side into the elongated hole 580 of guide cover 51b and the hole 960 of guide part 900. A stop 952 is installed at the other end of pin 950 to prevent pin 950 from falling off. Guide part 900 is movable along the elongated hole 580 of guide cover 51b with pin 950 as the support axis between first position P1 and second position P2.

[0175] A tension spring 990 is provided between the plates of the guide cover 51b. One end of the tension spring 990 is mounted to pin 930, and the other end is mounted to pin 950. Thus, the guide portion 900 moves from the tension spring 990 towards the contact member 9L (…). Figure 12AApply force in the opposite direction of arrow I1 to maintain the engagement state of the first engaging part 910 relative to the head 930b of the pin 930.

[0176] (Example of the operation of the guide unit 900)

[0177] Next, an example of the operation of the guide unit 900 in the fourth embodiment will be described. It should be noted that, under normal conditions, such as... Figure 12A As shown, the induction part 900 is located in the first position P1 by the force of the tension spring 990.

[0178] When performing binding operations in situations where the gap between the ground G and the reinforcing bar S is narrow, in order to reduce the amount of protrusion from the front end of the first guide 51 in the direction of the axis Ax of the guide 900, the guide 900 is manually rotated from the first position P1 to the second position P2.

[0179] Workers such as Figure 12A As shown, by holding the left and right sides of the guide portion 900 with your fingers, you overcome the elastic force of the tension spring 990 and pull the guide portion 900 in the direction of arrow I1, opposite to the contact member 9L. As a result, the guide portion 900 moves along the elongated hole 580 of the guide cover 51b, as... Figure 12B As shown, the first engaging portion 910 of the guide portion 900 is released from its engaging state relative to the head 930b of the pin 930.

[0180] Next, the workers, as Figure 12B as well as Figure 12C As shown, the guide portion 900 is rotated clockwise (in the direction of arrow I3) with the pin 950 as the fulcrum, and moved to the position where the second engaging portion 920 can engage with the head 930b of the pin 930.

[0181] When releasing the guide 900 or loosening the gripping force in this state, such as Figure 12C As shown, due to the compression of the tension spring 990, the guiding part 900 moves in the direction of arrow I2 towards the contact member 9L, and the second engaging part 920 engages with the head 930b of the pin 930. Through this operator's operation, the front end 900a moves from the first position P1 to the second position P2, thereby reducing the amount of protrusion from the front end of the first guide member 51 in the axial direction Ax of the guiding part 800, allowing the reinforcing bar S to be inserted into the insertion / extraction port 53 and reliably pressing the contact member 9L.

[0182] According to the fourth embodiment, the same effect as the first embodiment can be achieved. Specifically, when working in a space with a small gap between the reinforcing bar S and the ground G, the guide 900 is manually rotated before the binding action, thereby reducing the amount of protrusion of the guide 900 from the front end of the first guide 51. As a result, the reinforcing bar S can be reliably inserted into the insertion / removal port 53 between the first guide 51 and the second guide 52, and the contact members 9L and 9R can be pressed by the reinforcing bar S.

[0183] It should be noted that in the fourth embodiment, the reference for the distance when the guide 900 can be variable is set as the contact part 11. However, it is not limited to this. The reference can also be set as the drive part 8, the grip part, i.e. the handle part 304hL, 304hR, or the front end part 51a1 of the guide arm 51a, as described in the first embodiment.

[0184] The embodiments of this disclosure have been described above with reference to the accompanying drawings. However, the specific structure is not limited to this embodiment and may include designs that do not depart from the spirit of this disclosure. Furthermore, the effects described in this specification are merely examples and are not limiting; other effects may also be possible.

[0185] For example, in the above-described embodiment, an example of a rebar tying machine 1A, etc., in which a first main body 301 having a handle portion 304hL or similar grip portion is connected to a second main body 302 having a torsion portion 7 or similar grip portion by a long strip-shaped connecting portion 303, is described, but it is not limited to this. For example, the above-described guiding portions 600 to 900 or similar grip portions can also be applied to the guide portion of a portable rebar tying machine in which a handle portion or similar grip portion is provided in the second main body 302.

[0186] Furthermore, in the above embodiments, examples of providing guide portions 600 to 900 in the first guide member 51 have been described, but this is not a limitation. For example, if the length of the second guide member 52 in the axis Ax direction is longer than that of the first guide member 51 and the second guide member 52 contacts the obstacle such as the ground G first, the aforementioned guide portion 600 or the like can also be installed on the front end side of the second guide member 52.

[0187] Furthermore, in the above-described embodiment, the drive unit 8 drives the cutting part 6 and the twisting part 7, but the drive unit 8 may only drive the twisting part 7, while other structures such as the cutting part 6 may be driven by other drive sources.

Claims

1. A strapping machine, comprising: Feed section, conveys the wire; The guide section winds the thread conveyed by the feed section around the object to be bound. The twisting part, which twists the thread wound around the object being bound using the guide part; and The contact part is for the object to be bundled to come into contact with. The guide portion has: The first guide shapes the thread around the object to be bound, which comes into contact with the abutment portion; The second guide guides the thread, shaped by the first guide, toward the twisted portion; and A guiding section, disposed on at least one of the first guide and the second guide, guides the object to be bundled between the first guide and the second guide, and has a guiding surface. The guiding part is configured such that the distance between it and the contacting part can be changed. The guiding surface is inclined such that the opening width of the insertion port between the first guide and the second guide widens toward the front end of the guiding part.

2. A strapping machine, comprising: Feed section, conveys the wire; The guide section winds the thread conveyed by the feed section around the object to be bound. The twisting part, which twists the thread wound around the object being bound using the guide part; and Drive unit, drives the torsion unit, The guide portion has: The first guide shapes the thread around the object being bound; The second guide guides the thread, shaped by the first guide, toward the twisted portion; and A guiding section, disposed on at least one of the first guide and the second guide, guides the object to be bundled between the first guide and the second guide, and has a guiding surface. The guiding part is configured such that the distance between it and the driving part can be changed. The guiding surface is inclined such that the opening width of the insertion port between the first guide and the second guide widens toward the front end of the guiding part.

3. A strapping machine, comprising: Feed section, conveys the wire; The guide section winds the thread conveyed by the feed section around the object to be bound. The twisting part, which twists the thread wound around the object being bound using the guide part; and The control section is controlled by the operators. The guide portion has: The first guide shapes the thread around the object being bound; The second guide guides the thread, shaped by the first guide, toward the twisted portion; and A guiding section, disposed on at least one of the first guide and the second guide, guides the object to be bundled between the first guide and the second guide, and has a guiding surface. The guiding part is configured such that the distance between it and the holding part can be changed. The guiding surface is inclined such that the opening width of the insertion port between the first guide and the second guide widens toward the front end of the guiding part.

4. A strapping machine, comprising: Feed section, conveys the wire; The guide section winds the thread conveyed by the feed section around the object to be bound; and The twisting part is used to twist the thread wound around the object being bound by the guide part. The guide portion has: The first guide shapes the thread around the object being bound. The second guide guides the thread, shaped by the first guide, toward the twisted portion; and A guiding section, disposed on at least one of the first guide and the second guide, guides the object to be bundled between the first guide and the second guide, and has a guiding surface. The guiding portion is configured such that the distance between it and the front end of at least one of the first guide and the second guide can be changed. The guiding surface is inclined such that the opening width of the insertion port between the first guide and the second guide widens toward the front end of the guiding part.

5. The strapping machine according to any one of claims 1 to 4, wherein, The induction section rotates around an axis extending in a direction substantially orthogonal to the axis of the torsion section.

6. The strapping machine according to claim 5, wherein, The front end of the guide is located closer to the opening formed between the first guide and the second guide than the shaft.

7. The strapping machine according to any one of claims 1 to 4, wherein, The inducing part moves approximately parallel to the axis of the torsion part.

8. The strapping machine according to claim 1, wherein, The guiding part can move to a first position and a second position. The first position is a position where the distance between the front end of the guiding part and the abutting part is a first distance. The second position is a position where the distance between the front end of the guide portion and the abutment portion is a second distance shorter than the first distance.

9. The strapping machine according to claim 2, wherein, The guiding part can move to a first position and a second position. The first position is a position where the distance between the front end of the guide and the drive is a first distance. The second position is a position where the distance between the front end of the guide and the drive is a second distance shorter than the first distance.

10. The strapping machine according to claim 8 or 9, wherein, The induction section has: The first engaging portion secures the guiding portion to the first position; and The second engaging portion secures the guiding portion to the second position. At least one of the first guide and the second guide is provided with a engaged portion for engaging with the first engaging portion and the second engaging portion.

11. The strapping machine according to claim 10, wherein, In the guiding section, the first engaging section or the second engaging section engages with the engaged section by rotating around an axis extending in a direction substantially orthogonal to the axis of the torsion section.

12. The strapping machine according to claim 8 or 9, wherein, When the guiding part moves from the first position to the second position, it is held in the second position by the holding member.

13. The strapping machine according to claim 2, wherein, The strapping machine includes a first main body, a second main body, and an elongated connecting part that connects the first main body and the second main body. The torsion section and the driving section are located inside the second main body section. The first guide and the second guide are located at the end opposite to the connecting portion connected to the second main body. The guiding part is disposed on the front end side of at least one of the first guide and the second guide.

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