End machine

Abstract

To provide a binding machine capable of inserting a steel bar into an opening between a pair of guide parts even at a work site with a narrow gap between an object to be bound such as the steel bar and a ground.SOLUTION: A steel bar binding machine 1A comprises a feed part 3 for feeding a wire, a guide part 5 for winding the wire fed by the feed part 3 around a steel bar S, a twist part 7 for twisting the wire wound around the steel bar S at the guide part 5 and an abutment part 11 onto which the steel bar S is abutted. The guide part 5 comprises a first guide 51 for reforming the wire along the periphery of the steel bar S abutted onto the abutment part 11, a second guide 52 for guiding the wire reformed by the first guide 51 to the twist part 7 and an introduction part 600 provided at a tip side of the first guide 51 to introduce the steel bar S between the first guide 51 and the second guide 52. The introduction part 600 is configured to have a variable distance between the abutment part 11 and itself.SELECTED DRAWING: Figure 4B

Description

[Technical field]

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

[0002] Conventionally, binding machines have been used that perform binding operations by inserting the object to be bound, a reinforcing bar, inside a pair of guides provided at the tip side of the binding machine body, and then bending the wire using the pair of guide portions to wind it around the reinforcing bar and twist it.

[0003] In order to perform the binding operation reliably, it is necessary to reliably insert the rebar, which is the object to be bound, into the opening on the inside of the pair of guide parts. In particular, in a binding machine in which the binding machine body and the handle part are connected by a long connecting part, the guide parts are far away from the operator's viewpoint, so a structure that allows the rebar to be reliably inserted inside the pair of guide parts is required.

[0004] To address these issues, the following technologies have been proposed: For example, a binding machine has been disclosed in which a guide section with an inclined surface is provided on the tip side of the first guide of the guide section, making it easy to insert a rebar into the insertion / removal opening between the first guide and the second guide. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-41399 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, with conventional binding machines disclosed in Patent Document 1 and other documents, when working at a site where the gap between the reinforcing bar to be bound and the ground is narrow, when attempting to insert the reinforcing bar into the inner opening of a pair of guide parts, the tip of the guide parts comes into contact with the ground, making it impossible to insert the reinforcing bar into the specified position within the opening between the pair of guide parts.

[0007] Therefore, the present invention is intended to solve the above-mentioned problems and aims to provide a binding machine that is capable of inserting reinforcing bars into an opening between a pair of guide parts, even at sites where the gap between the object to be bound, such as reinforcing bars, and the ground is narrow. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, the present disclosure Binding machine the wire-binding apparatus includes a feed section that feeds a wire, a guide section that winds the wire fed by the feed section around an object to be bound, a twisting section that twists the wire wound around the object to be bound by the guide section, and a contact section against which the object to be bound is abutted, the guide section having a first guide that shapes the wire along the periphery of the object to be bound that is abutted against the abutment section, a second guide that guides the wire shaped by the first guide to the twisting section, and a guide section that is provided on at least one of the first guide and the second guide and guides the object to be bound between the first guide and the second guide, the guide section being The device has a tip portion that is capable of contacting an obstacle, and the tip portion is pressed against the obstacle. The distance between the contact portion and the contact portion is variable. Another binding machine includes a feed section that feeds a wire, a guide section that winds the wire fed by the feed section around an object to be bound, a twisting section that twists the wire wound around the object to be bound by the guide section, and a drive section that drives the twisting section, wherein the guide section has a first guide that shapes the wire around the object to be bound, a second guide that guides the wire that has been shaped by the first guide to the twisting section, and a guide section that is provided on at least one of the first guide and the second guide and guides the object to be bound between the first guide and the second guide, and the guide section has a tip that is capable of coming into contact with an obstacle, and the tip is pressed against the obstacle to change the distance between the guide section and the drive section. Another binding machine includes a feed section that feeds a wire, a guide section that winds the wire fed by the feed section around an object to be bound, a twisting section that twists the wire wound around the object to be bound by the guide section, and a holding section that is held by an operator, and the guide section has a first guide that shapes the wire around the object to be bound, a second guide that guides the wire that has been shaped by the first guide to the twisting section, and a guide section that is provided on at least one of the first guide and the second guide and guides the object to be bound between the first guide and the second guide, and the guide section has a tip that is capable of coming into contact with an obstacle, and the tip is pressed against the obstacle to change the distance between the guide section and the holding section. Another binding machine includes a feed section that feeds a wire, a guide section that winds the wire fed by the feed section around an object to be bound, and a twisting section that twists the wire wound around the object to be bound by the guide section, and the guide section has a first guide that shapes the wire around the object to be bound, a second guide that guides the wire that has been shaped by the first guide to the twisting section, and a guide section that is provided on at least one of the first guide and the second guide and guides the object to be bound between the first guide and the second guide, and the guide section has a tip that is capable of contacting an obstacle, and the tip is pressed against the obstacle to change the distance between the tip of at least one of the first guide and the second guide. Effect of the Invention

[0009] According to the present disclosure, the distance between the guide portion and the abutment portion is configured to be variable, so that the object to be bound can be inserted between the pair of guide portions even if the distance between the object to be bound and the ground is narrow. [Brief description of the drawings]

[0010] [Figure 1A] FIG. 1 is a side view of a reinforcing bar binding machine according to a first embodiment. [Figure 1B] FIG. 1 is a side view of a reinforcing bar binding machine according to a first embodiment. [Figure 1C] FIG. 1 is a front view of a reinforcing bar binding machine according to a first embodiment. [Figure 2A] FIG. 2 is a side view showing the internal configuration of the reinforcing bar binding machine according to the first embodiment. [Figure 2B] FIG. 2 is a side view showing the internal configuration of the reinforcing bar binding machine according to the first embodiment. [Diagram 3] 1 is a side view showing a main part of the internal configuration of a reinforcing bar binding machine according to a first embodiment. FIG. [Figure 4A] FIG. 2 is a side view of a guide section of the reinforcing bar binding machine according to the first embodiment. [Figure 4B] FIG. 2 is a side view of a guide section of the reinforcing bar binding machine according to the first embodiment. [Figure 4C] FIG. 2 is a side view of a guide section of the reinforcing bar binding machine according to the first embodiment. [Diagram 5] FIG. 2 is an exploded perspective view of a guide portion of the reinforcing bar binding machine according to the first embodiment. [Figure 6] 5A to 5C are diagrams illustrating the operation of the reinforcing bar binding machine according to the first embodiment. [Figure 7] FIG. 11 is a side view of a guide section of the reinforcing bar binding machine according to a modified example of the first embodiment. [Figure 8A] FIG. 11 is a side view of a guide section of the reinforcing bar binding machine according to the second embodiment. [Figure 8B] FIG. 11 is a side view of a guide section of the reinforcing bar binding machine according to the second embodiment. [Figure 9] FIG. 11 is an exploded perspective view of a guide portion of a reinforcing bar binding machine according to a second embodiment. [Figure 10A] FIG. 11 is a side view of a guide section of the reinforcing bar binding machine according to the third embodiment. [Figure 10B] FIG. 11 is a side view of a guide section of the reinforcing bar binding machine according to the third embodiment. [Figure 10C] FIG. 11 is a side view of a guide section of the reinforcing bar binding machine according to the third embodiment. [Figure 11] FIG. 11 is an exploded perspective view of a guide portion of a reinforcing bar binding machine according to a third embodiment. [Figure 12A] FIG. 13 is a side view of a guide section of the reinforcing bar binding machine according to the fourth embodiment. [Figure 12B] FIG. 13 is a side view of a guide section of the reinforcing bar binding machine according to the fourth embodiment. [Figure 12C] FIG. 13 is a side view of a guide section of the reinforcing bar binding machine according to the fourth embodiment. [Figure 13] FIG. 13 is an exploded perspective view of a guide part of a reinforcing bar binding machine according to a fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0012] [First embodiment] (Example of the configuration of the rebar binding machine 1A) 1A and 1B are side views of a reinforcing bar binding machine 1A according to the first embodiment. FIG. 1C is a front view of the reinforcing bar binding machine 1A according to the first embodiment. FIG. 2A and FIG. 2B are side views showing the internal configuration of the reinforcing bar binding machine 1A according to the first embodiment, and FIG. 3 is a side view showing a main part of the internal configuration of the reinforcing bar binding machine 1A shown in FIG. 2. FIG. 4A to FIG. 4C are side views showing an example of the configuration of a guiding unit 600 according to the first embodiment. FIG. 4A shows a case where work is performed at a site where the gap between the ground G, which is an obstacle, and the reinforcing bar S is wide, and FIG. 4B and FIG. 4C show a case where work is performed at a site where the gap between the ground G, which is an obstacle, and the reinforcing bar S is narrow. FIG. 5 is an exploded perspective view of the guiding unit 600 according to the first embodiment.

[0013] The reinforcing bar binding machine 1A is used with the operator standing with the guide part 5 facing downward in order to bind the reinforcing bar S at the operator's feet. As shown in Figs. 1A to 1C, the reinforcing bar binding machine 1A includes a first main body part 301 configured to be held by hand, a second main body part 302 equipped with a mechanism for binding the reinforcing bar S with a wire W, and a long connecting part 303 connecting the first main body part 301 and the second main body part 302. The first main body part 301 includes a pair of handle parts 304hL and 304hR, which are an example of a grip part that can be held by the operator. In addition, the first main body part 301 is provided with a power switch (not shown) for turning the power of the reinforcing bar binding machine 1A on and off.

[0014] 2A and 3, the second main body 302 includes a housing 2 that rotatably houses the wire reel 20 around which the wire W is wound, and a feed unit 3 that feeds the wire W wound around the wire reel 20 housed in the housing 2. The second main body 302 also includes a guide unit 5 that shapes the wire W fed by the feed unit 3 so that it follows the periphery of the reinforcing bar S and guides the shaped wire W to the twisting unit 7. The second main body 302 also includes a cutting unit 6 that cuts the wire W, a twisting unit 7 that twists the wire W wound around the reinforcing bar S in the guide unit 5, and a drive unit 8 that drives the cutting unit 6, the twisting unit 7, etc.

[0015] In the reinforcing bar binding machine 1A, a guide unit 5 is provided on one side of the second main body unit 302. In the reinforcing bar binding machine 1A, the first main body unit 301 and the second main body unit 302 are connected by the connecting unit 303, so that the distance between the guide unit 5 and the handle units 304hL and 304hR is extended compared to a reinforcing bar binding machine that does not have the connecting unit 303. In this embodiment, the side on which the guide unit 5 is provided is defined as the front.

[0016] As shown in Fig. 3, the storage section 2 is configured to be able to detachably attach and support the wire reel 20. The feed section 3 is equipped with a pair of feed gears 30 as a feed member. With the wire W sandwiched between the pair of feed gears 30, the feed section 3 feeds the wire W by rotating the feed gears 30 with a motor (not shown). Depending on the rotation direction of the feed gear 30, the feed section 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.

[0017] The cutting unit 6 is provided downstream of the feeding unit 3 with respect to the forward feeding of the wire W indicated by the arrow F. The cutting unit 6 includes a fixed blade unit 60 and a movable blade unit 61 that cuts the wire W in cooperation with the fixed blade unit 60. The cutting unit 6 also includes a transmission mechanism 62 that transmits the movement of the drive unit 8 to the movable blade unit 61.

[0018] The fixed blade portion 60 has an opening 60a through which the wire W passes. The movable blade portion 61 cuts the wire W passing through the opening 60a of the fixed blade portion 60 by a rotational movement with the fixed blade portion 60 as a fulcrum.

[0019] 3, 4A, etc., the guide unit 5 winds the wire W fed by the feed unit 3 around the reinforcing bar S. The guide unit 5 includes a first guide 51 that shapes and guides the wire W so that it follows the periphery of the reinforcing bar S that is abutted against the abutting unit 11 described below, a second guide 52 that guides the wire W that has been shaped by the first guide 51 to the twisting unit 7, and a guide unit 600 that guides the reinforcing bar S to the insertion / removal port (opening) 53. Details of the guide unit 600 will be described later.

[0020] The first guide 51 is attached to the front end of the second main body 302 and extends in a first direction, which is the front-rear direction indicated by the arrow A1. When the side of the first guide 51 attached to the second main body 302 is defined as the base end side and the side extending forward from the second main body 302 is defined as the tip end side, the base end side is attached to the second main body 302 by a screw or the like. The first guide 51 also includes a groove 51h having a guide surface 51g with which the wire W fed by the feed unit 3 slides.

[0021] The first guide 51 has a regulating section 40. The first regulating member of the regulating section 40 is constituted by the fixed blade section 60 described above. The regulating section 40 further includes a regulating member 42 downstream of the fixed blade section 60 and a regulating member 43 downstream of the regulating member 42 with respect to the forward feeding of the wire W indicated by the arrow F. The regulating members 42 and 43 are constituted by cylindrical members, and the wire W comes into contact with the outer circumferential surfaces. As a result, the wire W fed by the feed section 3 passes through the fixed blade section 60, the regulating member 42, and the regulating member 43 while coming into contact with each other, thereby forming a curling habit in the wire W.

[0022] The regulating unit 40 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 located at a position where the wire W comes into contact when the wire W is fed in the forward direction by the feeding unit 3 to give the wire W a curl, and to be movable to a position where the regulating member 42 does not come into contact with the wire W when the wire W is fed in the reverse direction to wind the wire W around the reinforcing bar S.

[0023] The second guide 52 is attached to the front end of the second main body 302. The second guide 52 is provided facing the first guide 51 in a second direction indicated by an arrow A2, which is an up-down direction perpendicular to the first direction. A predetermined distance is provided between the first guide 51 and the second guide 52 along the second direction, and an insertion / removal opening 53 through which the reinforcing bar S is inserted and removed is formed between the first guide 51 and the second guide 52.

[0024] The second guide 52 is rotatable about a shaft 52b relative to the second main body portion 302. The second guide 52 is movable toward and away from the first guide 51 in a second direction indicated by an arrow A2.

[0025] The second guide 52 can move between an open position where it is open relative to the first guide 51 and a closed position where it is closer to the first guide 51 than the open position by rotating about an axis 52b in conjunction with the pair of contact members 9L, 9R. When the second guide 52 is in the open position, the gap between the first guide 51 and the second guide 52 is widened, making it easier to insert a reinforcing bar into the insertion / removal opening 53. The second guide 52 is biased in the direction of moving to the open position by a biasing member 54 formed of a torsion coil spring or the like, and is maintained in the state moved to the open position.

[0026] 3, the twisting unit 7 includes an engaging unit 70 with which the wire W engages, and an operating unit 71 that operates the engaging unit 70. The engaging unit 70 has a first passage through which the wire W fed to the cutting unit 6 by the feeding unit 3 passes, and a second passage through which the wire W that has been given a curl by the restricting unit 40 and guided to the twisting unit 7 by the guide unit 5 passes. The engaging unit 70 rotates with the operation of the operating unit 71, thereby twisting the wire W wound around the reinforcing bar S.

[0027] As shown in Fig. 2A and Fig. 3, the drive unit 8 includes a torsion motor 80 that drives the torsion unit 7, a reducer 81 that reduces speed and amplifies torque, a rotating shaft 82 that is driven to rotate by the torsion motor 80 via the reducer 81, and a moving member 83 that transmits driving force to the cutting unit 6 and the regulating member 42. The torsion unit 7 and the drive unit 8 are arranged such that the rotating shaft 82, the operating unit 71, and the engagement unit 70 have their rotation centers coaxially arranged. The rotating shaft 82, and the rotating centers of the operating unit 71 and the engagement unit 70 are referred to as the axis Ax. In this example, the first direction indicated by the arrow A1 is the direction along the axis Ax.

[0028] The driving unit 8 moves the operating unit 71 along the axial direction of the rotating shaft 82 by the rotational movement of the rotating shaft 82. As the operating unit 71 moves along the axial direction of the rotating shaft 82, the engaging unit 70 holds the tip side of the wire W guided to the twisting unit 7 by the guide unit 5.

[0029] In the drive unit 8, the moving member 83 moves along the axial direction of the rotation shaft 82 in conjunction with the movement of the operating unit 71 along the axial direction of the rotation shaft 82, so that 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. Furthermore, as the operating unit 71 moves along the axial direction of the rotation shaft 82, the movement of the moving member 83 is transmitted to the movable blade unit 61 by the transmission mechanism 62, and the movable blade unit 61 is actuated to cut the wire W.

[0030] The driving unit 8 rotates the operating unit 71, which has been moved along the axial direction of the rotating shaft 82, by the rotational movement of the rotating shaft 82. The operating unit 71 rotates about the axis of the rotating shaft 82, thereby twisting the wire W at the engagement unit 70.

[0031] The reinforcing bar binding machine 1A also includes contact members 9L and 9R, a link member 96, and an abutment portion 11.

[0032] 1 and 2A, the contact members 9L and 9R come into contact with the reinforcing bar S, which is the object to be bound, inserted into the insertion / removal opening 53 between the first guide 51 and the second guide 52. The contact member 9L is provided on one side of the second main body 302, and the contact member 9R is provided on the other side of the second main body 302. The contact members 9L and 9R are provided movably along the first direction indicated by the arrow A1, and move between a standby position (see FIG. 4B) where they protrude from the abutment portion 11 toward the insertion / removal opening 53, and an operating position (see FIG. 4C) which is close to the abutment portion 11 and moves the second guide 52 to the closed position.

[0033] The link member 96 transmits the movement of the contact members 9L, 9R to the second guide 52. When the contact members 9L, 9R move to the operating position, the link member 96 rotates about an axis 97 as a fulcrum to move the second guide 52 to a closed position where the opening width of the insertion / removal port 53 is narrowed.

[0034] The abutment portion 11 is attached from the front end of the second main body portion 302 to both the left and right sides of the second main body portion 302, and covers the front end of the second main body portion 302. The abutment portion 11 is abutted against the reinforcing bar S or the like when the contact members 9L, 9R, which are pushed by the reinforcing bar S inserted into the insertion / removal port 53, move to the operating position. The abutment portion 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 portion 302 and parts of both the left and right sides of the front side of the second main body portion 302 between the base end side of the first guide 51 and the base end side of the second guide 52. While the second main body portion 302 is made of resin, the abutment portion 11 is made of metal, so that wear of the abutment portion 11 can be reduced even if the contact members 9L, 9R and the reinforcing bar S abut against the abutment portion 11.

[0035] (Configuration example of the guidance unit 600) Next, an example of the configuration of the guiding section 600 according to the first embodiment will be described.

[0036] As shown in FIG. 4A etc., the guiding part 600 is provided at the tip side of the first guide 51, picks up the reinforcing bars S to be bound, and guides and guides them into the insertion / removal opening 53 between the first guide 51 and the second guide 52. The guiding part 600 has a tip part 600a that is provided so as to be able to contact the ground G, and a guiding surface 600b that is provided on the side facing the second guide 52 (the insertion / removal opening 53 side). The tip part 600a is formed in a curved shape, not an edge shape, so as not to damage the floor surface of the work site. The guiding surface 600b is inclined so that the opening width of the insertion / removal opening 53 becomes wider from the base end side to the tip side of the guiding part 600, and has a shape that makes it easy to pick up the reinforcing bars S.

[0037] Furthermore, when working at a site where the distance between the ground G, which is an obstacle, and the reinforcing bar S is narrow, the guiding part 600 is configured to rotate by pressing the tip part 600a against the ground G, thereby making it possible to change the amount of protrusion from the first guide 51. In other words, the guiding part 600 is configured to be able to change the distance between the contact part 11 of the second main body part 302 according to the distance between the reinforcing bar S, which is the object to be bound, and the ground G.

[0038] Specifically, as shown in Fig. 4A, when working at a site where the gap between the reinforcing bar S and the ground G is wide, the guiding part 600 is located at a first position P1 where the distance between the tip part 600a and the abutment part 11 is a first distance D1, and the guiding part 600 protrudes a large amount from the first guide 51. In contrast, as shown in Fig. 4B and Fig. 4C, when working at a site where the gap between the reinforcing bar S and the ground G is narrow, the guiding part 600 rotates to a second position P2 where the distance between the tip part 600a and the abutment part 11 is a second distance D2 that is shorter than the first distance D1, and the guiding part 600 protrudes a small amount from the first guide 51.

[0039] 5, the guide portion 600 is formed of, for example, a pair of flat plates arranged opposite to each other, and is fitted to the outside of the guide cover 51b. Like the guide portion 600, the guide cover 51b is also formed of, for example, a pair of flat plates arranged opposite to each other, and is fitted to the outside of the guide arm 51a. The guide arm 51a and the guide cover 51b form the first guide 51.

[0040] A long hole 610 for guiding the guide portion 600 to be movable between the first position P1 and the second position P2 is formed in the guide portion 600. The long hole 610 is formed in a substantially arc shape and restricts the movement range of the guide portion 600 to between the first position P1 and the second position P2.

[0041] A pin 630 is inserted from one side to the other side through the long hole 610 of the guiding portion 600, the hole 500 of the guide cover 51b, and the hole 502 of the guide arm 51a. A stopper 632 is attached to the other end of the pin 630 to prevent the pin 630 from coming out in the axial direction. In addition, a pin 640 for supporting a torsion coil spring 650 described later is attached between the plates of the guide cover 51b.

[0042] A pin 620 is inserted from one side to the other side through a hole 660 of the guiding part 600 and a hole 504 of the guide cover 51b. A stopper 622 is attached to the other end of the pin 620 to prevent the pin 620 from coming out in the axial direction. The guiding part 600 rotates along the long hole 610 with the pin 620 as a fulcrum relative to the guide cover 51b (first guide 51). The tip part 600a is provided on the insertion / removal opening 53 side of the pin 620, which serves as the fulcrum for the rotation.

[0043] Torsion coil spring 650 is provided between the plates of guide cover 51b. Pin 620 is inserted into the central axis of torsion coil spring 650, a fixed point of torsion coil spring 650 is attached to pin 640, and a load point of torsion coil spring 650 abuts against action portion 602 provided on the opposite side of guide surface 600b. Guide portion 600 is biased by torsion coil spring 650 in the clockwise direction of arrow A3 (see FIG. 4B) with pin 620 as a fulcrum, and is held at first position P1.

[0044] (Example of operation of rebar binding machine 1A) Next, an operation of the reinforcing bar binding machine 1A for binding the reinforcing bar S with the wire W will be described. Fig. 6 is a diagram showing an example of the operation of the reinforcing bar binding machine 1A according to the first embodiment. Below, a case where binding work is performed at a work site where the distance between the reinforcing bar S and the ground G is narrow will be described with reference to Figs. 1A to 6.

[0045] The worker stands while holding the handle portion 304hR and the handle portion 304hL, and aligns the guide portion 5 with, for example, the intersection of two reinforcing bars S. Next, as shown in FIG. 4B, the tip portion 600a of the guide portion 600 is pressed against the ground G by moving the reinforcing bar binding machine 1A in the direction in which the reinforcing bar S is inserted into the insertion / removal port 53.

[0046] 4C and 5, this pressing action causes the tip 600a of the guiding part 600 to move toward the second main body part 302 against the elastic force of the torsion coil spring 650. Specifically, the guiding part 600 rotates in the direction of the arrow A4 along the long hole 610 with the pin 620 as a fulcrum, and the tip 600a of the guiding part 600 moves from the first position P1 to the second position P2. This reduces the amount of protrusion of the guiding part 600 from the tip side of the first guide 51, making it possible to insert the reinforcing bar S into the insertion / removal opening 53.

[0047] 4C and 6, when the reinforcing bar S is inserted into the insertion opening 53 and the reinforcing bar binding machine 1A is moved in the direction of inserting the reinforcing bar S into the insertion opening 53, the reinforcing bar S is pressed against the contact member 9L, so that the contact member 9L moves to the operating position. Accordingly, the link member 96 rotates, and the second guide 52 moves from the open position to the closed position approaching the first guide 51.

[0048] When the second guide 52 moves to the closed position, the feed motor rotates in the forward direction, and the feed gear 30 rotates in the forward direction, thereby feeding the wire W in the forward direction indicated by the arrow F. The wire W fed in the forward direction by the feed unit 3 comes into contact with the fixed blade unit 60, the regulating members 42 and 43, and the guide surface 51g of the first guide 51, so that the wire W is bent into an arc shape and given a curling tendency that draws an approximately circle.

[0049] The wire W having been curled by the restricting portion 40 of the first guide 51 is guided to the second guide 52 and the engaging portion 70 of the twisting unit 7. When the tip of the wire W is fed to a predetermined position, the feed motor (not shown) is stopped, and the wire W is wound around the reinforcing bar S.

[0050] After the feed motor stops, the twisting motor 80 rotates in the forward direction, and the tip side of the wire W is held by the engagement portion 70 in accordance with the operation of the operating portion 71. When the wire W is held by the engagement portion 70, the twisting motor 80 stops and the feed motor is rotated 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 reverse direction as indicated by the arrow R. This causes the wire W to be wound around the reinforcing bar S so as to be in close contact with it.

[0051] When the wire W is wound around the reinforcing bar S, the feed motor stops rotating and the twisting motor 80 rotates in the forward direction. Accordingly, the movable blade 61 is actuated by the moving member 83 via the transmission mechanism 62, and the wire W is cut.

[0052] After the wire W is cut, the twisting motor 80 continues to rotate in the forward direction to rotate the engagement portion 70 and twist the wire W. Once the wire W is tied, the twisting motor 80 is rotated in the reverse direction. This causes the engagement portion 70 to return to its initial position, and the wire W is released from its hold. The bundling operation is performed by this series of operations.

[0053] When the binding operation is completed, the worker moves the reinforcing bar binding machine 1A in the direction to remove the reinforcing bar S from the insertion / removal opening 53 (direction away from the ground G). As a result, the tip 600a of the guiding part 600 moves away from the ground G, and as shown in Fig. 4B, the urging force of the torsion coil spring 650 causes the guiding part 600 to rotate in the direction of arrow A3 with the pin 620 as a fulcrum, and the guiding part 600 returns from the second position P2 to the first position P1. In addition, when the force of the reinforcing bar S pressing the contact member 9L is no longer applied by the operation of moving the reinforcing bar binding machine 1A in the direction to remove the reinforcing bar S from the insertion / removal opening 53, the second guide 52 moves in the direction away from the first guide 51 by the urging force of the urging member 54 and returns to the open position.

[0054] According to the first embodiment, when working at a site where the gap between the reinforcing bar S and the ground G is narrow, the amount of protrusion of the reinforcing bar 600 from the tip of the first guide 51 can be reduced by rotating the reinforcing bar 600 by pressing the reinforcing bar 600 against the ground G. This allows the reinforcing bar S to be reliably inserted into the insertion / removal opening 53 between the first guide 51 and the second guide 52, and the reinforcing bar S presses the contact members 9L, 9R to reliably start the bundling operation.

[0055] Conventionally, in the case of a site where the interval between the reinforcing bar S and the ground G is narrow, in order to shorten the length of the entire guide unit 5 in the axis Ax direction, it was necessary to perform replacement work of removing the guiding unit 600 from the first guide 51. In contrast, according to the first embodiment, since the length of the guiding unit 600 in the axis Ax direction relative to the abutting unit 11 can be changed, the work of replacing the guiding unit 600 is not required, and the work burden can be reduced. In addition, loss of parts during the replacement work of the guiding unit 600 can be avoided. In addition, since a mechanism premised on replacement is not required, the guiding unit 600 can be firmly attached to the first guide 51.

[0056] In the above-described embodiment, when work is performed at a site where the distance between the reinforcing bar S and the ground G is narrow, the tip 600a of the guidance part 600 is moved from the first position P1 to the second position P2 by pressing the guidance part 600 against the ground G, which is an obstacle; however, in a work site where it is not recommended to bring the guidance part 600 into contact with the ground G, the worker may manually rotate the guidance part 600.

[0057] For example, at a work site where a protective sheet or tape (hereinafter referred to as a protective sheet, etc.) is laid on concrete (ground G), contacting the tip 600a of the guiding part 600 with the protective sheet, etc. may damage the protective sheet, etc. Therefore, at a work site where a protective sheet, etc. is laid, it is necessary to perform the bundling work without bringing the guiding part 600 into contact with the ground G.

[0058] FIG. 7 is a diagram showing a state in which a guide portion 600 according to a modified example of the first embodiment is used.

[0059] When the gap between the reinforcing bar S and the ground G is narrow and a curing sheet or the like is laid on the ground G such as concrete, as shown in FIG. 7, the worker rotates the tip portion 600a from the first position P1 to the second position before starting the bundling operation. Next, the screw 670, which is a holding member, is removed from the hole 508 of the guide cover 51b (see FIG. 4C), and the removed screw 670 is attached to the hole 662 of the guiding portion 600 and the hole 506 of the guide cover 51b (see FIG. 5). As a result, the guiding portion 600 is held and fixed at the second position P2. After the guiding portion 600 is fixed at the second position P2, for example, the guide portion 5 is aligned with the intersection of two reinforcing bars S, and the reinforcing bar S is inserted into the insertion / removal opening 53 to perform the bundling operation. In this way, by rotating the guiding portion 600 before starting the bundling operation, damage to the curing sheet or the like can be avoided.

[0060] In the above description, the reference for the distance when the guiding unit 600 is varied is the contact unit 11, but the reference may be, for example, the driving unit 8 or the torsion motor 80. The guiding unit 600 is configured so that the distance between it and the torsion motor 80 provided in the second main body unit 302 can be varied according to the distance between the reinforcing bar S, which is the object to be bound, and the ground G, as shown in Figs. 2A and 2B.

[0061] Specifically, when working at a site where the gap between the reinforcing bar S and the ground G is wide, as shown in Fig. 2A, the guiding part 600 is located at a first position P1 where the distance between the tip part 600a and the torsion motor 80 is a first distance F1, and the amount of protrusion of the guiding part 600 from the first guide 51 becomes large. In contrast, when working at a site where the gap between the reinforcing bar S and the ground G is narrow, as shown in Fig. 2B, the guiding part 600 rotates to a second position P2 where the distance between the tip part 600a and the torsion motor 80 is a second distance F2 that is shorter than the first distance F1, and the amount of protrusion of the guiding part 600 from the first guide 51 becomes small.

[0062] In addition, the reference for the distance when the guiding part 600 is varied may be, for example, the handle parts 304hL, 304hR which are the gripping parts, instead of the contact part 11 etc. As shown in Figs. 1A and 1B, the guiding part 600 is configured so that the distance between the handle parts 304hL, 304hR which are the gripping parts of the first main body part 301 can be varied according to the distance between the reinforcing bar S which is the binding object and the ground G.

[0063] Specifically, when working at a site where the interval between the reinforcing bar S and the ground G is wide, as shown in Fig. 1A, the guiding part 600 is located at a first position P1 where the distance between the tip part 600a and the handle parts 304hL, 304hR is a first distance E1, and the amount of protrusion of the guiding part 600 from the first guide 51 is large. In contrast, when working at a site where the interval between the reinforcing bar S and the ground G is narrow, as shown in Fig. 1B, the guiding part 600 rotates to a second position P2 where the distance between the tip part 600a and the handle parts 304hL, 304hR is a second distance E2 that is shorter than the first distance E1, and the amount of protrusion of the guiding part 600 from the first guide 51 is small.

[0064] Furthermore, the reference for the distance when the guiding unit 600 is varied may be, for example, the tip 51a1 of the guide arm 51a, which is the first guide, instead of the contact unit 11, etc. As shown in Figures 4A and 4C, the guiding unit 600 is configured so that the distance between the tip 51a1 of the guide arm 51a provided on the second main body 302 can be varied depending on the distance between the reinforcing bar S, which is the object to be bound, and the ground G.

[0065] Specifically, when working at a site where the gap between the reinforcing bar S and the ground G is wide, as shown in Fig. 4A, the guiding part 600 is located at a first position P1 where the distance between the tip 600a and the tip 51a1 of the guide arm 51a is a first distance H1, and the amount of protrusion of the guiding part 600 from the first guide 51 is large. In contrast, when working at a site where the gap between the reinforcing bar S and the ground G is narrow, as shown in Fig. 4C, the guiding part 600 rotates to a second position P2 where the distance between the tip 600a and the tip 51a1 of the guide arm 51a is a second distance H2 that is shorter than the first distance H1, and the amount of protrusion of the guiding part 600 from the first guide 51 is small.

[0066] [Second embodiment] The reinforcing bar binding machine 1A according to the second embodiment differs from the guiding unit 600 of the reinforcing bar binding machine 1A according to the first embodiment in that the guiding unit 700 is configured to be movable substantially parallel to the axis Ax. In the second embodiment, for configurations and operations common to the first embodiment, the explanation of the first embodiment will be cited and redundant explanations will be omitted.

[0067] (Configuration example of the guidance section 700) 8A and 8B are side views showing an example of the configuration of the guiding section 700 according to the second embodiment. Fig. 9 is an exploded perspective view of the guiding section 700 according to the second embodiment.

[0068] 8A and other figures, the guiding part 700 is provided at the tip side of the first guide 51, and picks up the reinforcing bars S to be bundled and guides and guides them into the insertion / removal opening 53 between the first guide 51 and the second guide 52. The guiding part 700 has a tip part 700a that is provided so as to be able to contact the ground G, and a guiding surface 700b that is provided on the side facing the second guide 52. The guiding surface 700b is inclined so that the opening width of the insertion / removal opening 53 becomes wider from the base end side toward the tip side of the guiding part 700, and has a shape that makes it easy to pick up the reinforcing bars S.

[0069] Furthermore, when working at a site where the gap between the ground G, which is an obstacle, and the reinforcing bar S is narrow, the guiding part 700 is configured so that the tip part 700a presses against the ground G to slide approximately parallel to the axis Ax and change the amount of protrusion from the first guide 51. In other words, the guiding part 700 is configured so that the distance between the abutting part 11 of the second main body part 302 can be changed according to the gap between the reinforcing bar S, which is the object to be bound, and the ground G.

[0070] Specifically, when working at a site where the gap between the reinforcing bar S and the ground G is wide, as shown in Fig. 8A, the guiding part 700 is located at a first position P1 where the distance between the tip 700a and the abutment part 11 is a first distance D1, and the amount of protrusion of the guiding part 700 from the first guide 51 is large. In contrast, when working at a site where the gap between the reinforcing bar S and the ground G is narrow, as shown in Fig. 8B, the tip 700a of the guiding part 700 presses against the ground G, causing the guiding part 700 to slide to a second position P2 where the distance between the tip 700a and the abutment part 11 is a second distance D2 shorter than the first distance D1, and the amount of protrusion of the guiding part 700 from the first guide 51 is small.

[0071] 9, the guide portion 700 is configured, for example, by a pair of flat plates arranged opposite to each other, and is fitted to the outside of the guide covers 51b, 51b. The guide covers 51b, 51b are, for example, a pair of flat plates arranged opposite to each other, and are connected by pins 530, 532 via the guide arm 51a. The guide arm 51a and the guide cover 51b configure the first guide 51.

[0072] The guide covers 51b, 51b are respectively formed with a first elongated hole 522 and a second elongated hole 520 for movably supporting the guide part 600 between a first position P1 and a second position P2. The first elongated hole 522 and the second elongated hole 520 are formed substantially parallel to the axis Ax and aligned in the front-rear direction, and restrict the movement range of the guide part 700 to between the first position P1 and the second position P2.

[0073] A pin 720 is inserted from one side to the other side through the hole 740 of the guide portion 700 and the second long hole 520 of the guide covers 51b. Stoppers 722, 723 are attached to both ends of the pin 720 to prevent the pin 720 from coming out in the axial direction.

[0074] Pin 710 is inserted from one side to the other side into first long hole 522 of guide covers 51b, 51b. A portion of pin 710 exposed to the outside from guide cover 51b engages (fits) into recess 724 of guide portion 700. Stoppers 712, 713 are attached to both ends of pin 710 inserted into first long hole 522, respectively, to prevent pin 710 from coming out in the axial direction.

[0075] A tension spring 730 is provided between the guide covers 51b, 51b. One end of the tension spring 730 is attached to the pin 710, and the other end of the tension spring 730 is attached to the pin 530. As a result, as shown in Figures 8A and 9, the pin 710 is urged by the tension spring 730 in the direction of the arrow B1 opposite to the contact member 9L, and the guide portion 700 engaged with the pin 710 is pressed in the direction of the arrow B1, thereby being held at the first position P1.

[0076] (Operation example of guiding unit 700) Next, a description will be given of an example of the operation of guiding section 700 according to the second embodiment. In a normal state, guiding section 700 is located at first position P1 by the biasing force of tension spring 730, as shown in FIG.

[0077] When performing binding work when the gap between the ground G and the reinforcing bar S is narrow, the guiding part 700 is slid from the first position P1 to the second position P2 in order to reduce the amount of protrusion from the tip side of the first guide 51 in the direction of the axis Ax of the guiding part 700. Specifically, the worker aligns the guide part 5 with the intersection of two reinforcing bars S, for example, and presses the tip part 700a of the guiding part 700 against the ground G by moving the reinforcing bar binding machine 1B in the direction in which the reinforcing bar S is inserted into the insertion / removal port 53.

[0078] 8B, the pin 710 is biased in the direction of arrow B2 by the recess 742 of the guide portion 700, and the tension spring 730 is expanded, causing the pin 710 to move along the first long hole 522. The guide portion 700 moves relatively to the first guide 51 in the direction of arrow B2 on the contact member 9L side, and the tip portion 700a moves from the first position P1 to the second position P2. This makes it possible to reduce the amount of protrusion of the guide portion 700 from the tip side of the first guide 51 in the direction of the axis Ax, and makes it possible to insert the reinforcing bar S into the insertion / removal port 53 and reliably press the contact member 9L.

[0079] On the other hand, when the rebar binding machine 1C is lifted in a direction away from the ground G due to completion of the binding operation of the rebar S, and the tip 700a is separated from the ground G, the tension spring 730 is compressed and returns to its original state, and the pin 710 is biased in the direction of the arrow B1 (see FIG. 8A). Accordingly, the guiding part 700 together with the pin 710 slides relatively in the direction of the arrow B1 with respect to the first guide 51, and the tip 700a returns from the second position P2 to the first position P1.

[0080] According to the second embodiment, it is possible to achieve substantially the same effects as the first embodiment. Specifically, when working at a site where the gap between the reinforcing bar S and the ground G is narrow, the guiding part 700 is slid by pressing the guiding part 700 against the ground G, thereby making it possible to reduce the amount of protrusion of the guiding part 700 from the tip side of the first guide 51. This allows the reinforcing bar S to be reliably inserted into the insertion / removal opening 53 between the first guide 51 and the second guide 52, and the reinforcing bar S can press the contact members 9L and 9R.

[0081] In the second embodiment, the reference distance when the guidance unit 700 is varied is the abutment unit 11, but this is not limited to this, and as described in the first embodiment, the reference distance may be the drive unit 8, the handle units 304hL and 304hR which are the gripping units, or the tip end 51a1 of the guide arm 51a.

[0082] [Third embodiment] The reinforcing bar binding machine 1C of the third embodiment differs from the guiding unit 600 of the reinforcing bar binding machine 1A of the first embodiment in that the guiding unit 800 is configured to be manually rotatable about an axis (pin 860) provided in a direction perpendicular to the axis Ax. Note that in the third embodiment, the explanation of the first embodiment will be cited for the configuration and operation common to the first embodiment, and redundant explanations will be omitted.

[0083] (Example of the configuration of the guiding unit 800) 10A to 10C are side views showing an example of the configuration of a guiding section 800 according to the third embodiment. Fig. 11 is an exploded perspective view of the guiding section 800 according to the third embodiment.

[0084] 10A and other figures, the guiding part 800 is provided at the tip side of the first guide 51, and picks up the reinforcing bars S to be bundled and guides and guides them into the insertion / removal opening 53 between the first guide 51 and the second guide 52. The guiding part 800 has a tip part 800a that is provided so as to be able to contact the ground G, and a guiding surface 800b that is provided on the side facing the second guide 52. The guiding surface 800b is inclined so that the opening width of the insertion / removal opening 53 becomes wider from the base end side toward the tip side of the guiding part 800, and has a shape that makes it easy to pick up the reinforcing bars S.

[0085] Furthermore, when working at a site where the gap between the ground G, which is an obstacle, and the reinforcing bar S is narrow, the guiding unit 800 is configured so that the worker can manually rotate the guiding unit 800 about an axis (pin 860) perpendicular to the axis Ax as a fulcrum, thereby varying the amount of protrusion from the first guide 51. In other words, the guiding unit 800 is configured so that the distance between the abutting unit 11 of the second main body 302 can be varied according to the gap between the reinforcing bar S, which is the object to be bound, and the ground G.

[0086] Specifically, when working at a site where the gap between the reinforcing bar S and the ground G is wide, the guiding part 800 is located at a first position P1 where the distance between the tip 800a and the abutment part 11 is a first distance D1, as shown in Fig. 10A, and the amount of protrusion of the guiding part 800 from the first guide 51 becomes large. In contrast, when working at a site where the gap between the reinforcing bar S and the ground G is narrow, the guiding part 800 rotates to a second position P2 where the distance between the tip 800a and the abutment part 11 is a second distance D2 that is shorter than the first distance D1, as shown in Fig. 10C, and the amount of protrusion of the guiding part 800 from the first guide 51 becomes small.

[0087] 11, the guide portion 800 is formed of, for example, a pair of flat plates arranged opposite to each other, and is fitted to the outside of the guide cover 51b. Like the guide portion 800, the guide cover 51b is also formed of, for example, a pair of flat plates arranged opposite to each other, and is fitted to the outside of the guide arm 51a. The guide arm 51a and the guide cover 51b form the first guide 51.

[0088] The guide portion 800 has a first engagement portion 810 that can engage with a pin 850 (engaged portion) described below when the guide portion 800 is in a first position P1, and a second engagement portion 820 that can engage with the pin 850 when the guide portion 800 is in a second position P2. The first engagement portion 810 and the second engagement portion 820 are, for example, recesses, and are formed on the edge portions of the guide portion 800, respectively.

[0089] The guide cover 51b is formed with an elongated hole 540 for moving the guiding part 800 to a position where the engagement between the first engagement part 810 and the second engagement part 820 can be released. The elongated hole 540 is composed of a first hole 540a having a size that allows the head part (engaged part) 850b of the pin 850 to be inserted therein, and a second hole 540b for movably supporting the shaft part 850a of the pin 850.

[0090] A pin 880 is inserted from one side to the other side into the hole 544 of the guide cover 51b. A portion of the pin 880 exposed to the inside of the guide cover 51b engages (fits) with the recess 542 of the guide arm 51a.

[0091] A pin 860 is inserted from one side to the other side through hole 830 of guiding part 800 and hole 546 of guide cover 51b. A stopper 862 that prevents pin 860 from coming out in the axial direction is attached to the other end of pin 860. This allows guiding part 800 to rotate with respect to guide cover 51b, with pin 860 as a fulcrum.

[0092] A pin 850 is inserted into the long hole 540 of the guide cover 51b from one side to the other side. A shaft portion 850a of the pin 850 is supported so as to be movable along the long hole 540. A head portion 850b of the pin 850 is attached to the guide cover 51b so as to be exposed from the left and right side surfaces of the guide cover 51b and to be grippable by an operator.

[0093] A tension spring 870 is provided between the plates of the guide cover 51b. One end of the tension spring 870 is attached to the pin 860, and the other end of the tension spring 870 is attached to the pin 850. As a result, the pin 850 is biased toward the first engagement portion 810 and the second engagement portion 820 of the guiding portion 800 by the elastic force of the tension spring 870, and the engagement state of the pin 850 with the first engagement portion 810 etc. of the guiding portion 800 is maintained.

[0094] (Example of operation of the guiding unit 800) Next, an example of the operation of the guiding unit 800 according to the third embodiment will be described. In a normal state, as shown in FIG. 10A, the guiding unit 800 is located at the first position P1 by the pin 850 engaging with the first engagement portion 810.

[0095] When performing binding work when the gap between the ground G and the reinforcing bar S is narrow, the guide part 800 is manually rotated from the first position P1 to the second position P2 in order to reduce the amount of protrusion from the tip side of the first guide 51 in the direction of the axis Ax of the guide part 800.

[0096] The operator grasps head 850b of pin 850 and pulls pin 850 in the direction of arrow C1 on the contact member 9L side of guiding part 800 against the elastic force of tension spring 870, as shown in Fig. 10A. This causes pin 850 to move in the direction of arrow C1 along long hole 540, and as shown in Fig. 10B, the engagement state of first engagement part 810 of guiding part 800 with pin 850 is released.

[0097] Next, as shown in Figures 10B and 10C, the worker maintains the state in which pin 850 is pulled, i.e., the state in which the engagement of first engagement portion 810 is released, and rotates tip portion 800a of guide portion 800 counterclockwise (in the direction of arrow C3) toward insertion / removal port 53, with pin 860 as the fulcrum.

[0098] After the second engagement portion 820 is moved to the engagement position of the pin 850, the head 850b of the pin 850 is released or the force gripping the head 850b of the pin 850 is loosened. As a result, the tension spring 870 is compressed and returns to its original state, and the pin 850 moves toward the second engagement portion 820 in the direction of the arrow C2, so that the pin 850 engages with the second engagement portion 820. By moving the tip portion 800a from the first position P1 to the second position P2 by such an operation by the operator, the amount of protrusion from the tip side of the first guide 51 in the direction of the axis Ax of the guide portion 800 can be reduced, and the reinforcing bar S can be inserted into the insertion / removal port 53 to reliably press the contact member 9L.

[0099] According to the third embodiment, it is possible to achieve substantially the same effects as the first embodiment. For example, when working at a site where the gap between the reinforcing bar S and the ground G is narrow, the amount of protrusion of the guiding part 800 from the tip side of the first guide 51 can be reduced by manually rotating the guiding part 800 before the bundling operation. This allows the reinforcing bar S to be reliably inserted into the insertion / removal opening 53 between the first guide 51 and the second guide 52, and the reinforcing bar S can press the contact members 9L and 9R.

[0100] In the third embodiment, the reference distance when the guidance unit 800 is varied is the abutment unit 11, but this is not limited to this, and as described in the first embodiment, the reference distance may be the drive unit 8, the handle units 304hL and 304hR which are the gripping units, or the tip end 51a1 of the guide arm 51a.

[0101] [Fourth embodiment] The reinforcing bar binding machine 1D of the fourth embodiment differs from the guiding unit 600 of the reinforcing bar binding machine 1A of the first embodiment in that the guiding unit 900 is configured to be manually rotatable about an axis (pin 950) provided in a direction perpendicular to the axis Ax. Note that in the fourth embodiment, the explanation of the first embodiment will be cited for the configuration and operation common to the first embodiment, and redundant explanations will be omitted.

[0102] (Example of the configuration of the guiding section 900) 12A to 12C are side views showing an example of the configuration of a guiding section 900 according to the fourth embodiment. Fig. 13 is an exploded perspective view of the guiding section 900 according to the fourth embodiment.

[0103] 12A and other figures, the guiding part 900 is provided at the tip side of the first guide 51, and picks up the reinforcing bars S to be bound and guides and guides them into the insertion / removal opening 53 between the first guide 51 and the second guide 52. The guiding part 900 has a tip part 900a that is provided so as to be able to contact the ground G, and a guiding surface 900b that is provided on the side facing the second guide 52. The guiding surface 900b is inclined so that the opening width of the insertion / removal opening 53 becomes wider from the base end side toward the tip side of the guiding part 900, and has a shape that makes it easy to pick up the reinforcing bars S.

[0104] Furthermore, when working at a site where the gap between the ground G, which is an obstacle, and the reinforcing bar S is narrow, the guiding unit 900 is configured so that the worker can manually rotate the guiding unit 800 about an axis (pin 950 described later) perpendicular to the axis Ax as a fulcrum, thereby varying the amount of protrusion from the first guide 51. In other words, the guiding unit 900 is configured so that the distance between the abutting unit 11 provided on the second main body 302 can be varied according to the gap between the reinforcing bar S, which is the object to be bound, and the ground G.

[0105] Specifically, when working at a site where the gap between the reinforcing bar S and the ground G is wide, as shown in Fig. 12A etc., the guiding part 900 is located at a first position P1 where the distance between the tip part 900a and the abutment part 11 is a first distance D1, and the amount of protrusion of the guiding part 900 from the first guide 51 becomes large. In contrast, when working at a site where the gap between the reinforcing bar S and the ground G is narrow, as shown in Fig. 12C, the guiding part 600 rotates to a second position P2 where the distance between the tip part 900a and the abutment part 11 is a second distance D2 shorter than the first distance D1, and the amount of protrusion of the guiding part 900 from the first guide 51 becomes small.

[0106] 13, the guide portion 900 has a first engagement portion 910 that can engage with a head portion (engaged portion) 930b formed on the pin 930 when the guide portion 900 is in the first position P1, and a second engagement portion 920 that can engage with the head portion 930b of the pin 930 when the guide portion 900 is in the second position P2. The first engagement portion 910 and the second engagement portion 920 are recessed portions, and are formed on the edge portions of the guide portion 900, respectively.

[0107] The guide cover 51b is formed with a long hole 580 for moving the guide part 800 to a position where the engagement between the first engagement part 810 and the second engagement part 820 can be released. The longitudinal direction of the long hole 580 is approximately parallel to the axis Ax.

[0108] The guide portion 900 is formed of, for example, a pair of flat plates arranged opposite to each other, and is fitted to the outside of the guide cover 51b. Like the guide portion 800, the guide cover 51b is also formed of, for example, a pair of flat plates arranged opposite to each other, and is fitted to the outside of the guide arm 51a.

[0109] A pin 940 is inserted into the guide cover 51b. A portion of the pin 940 exposed to the inside of the guide cover 51b is engaged with a recess 582 of the guide arm 51a.

[0110] A pin 930 is inserted into the guide cover 51b from one side to the other side. One end of the pin 930 is provided with a head (engaged portion) 930b having a diameter larger than that of the shaft portion. The head 930b is exposed from one side surface of the guide cover 51b, and is engageable with the first engaging portion 910 and the second engaging portion 920. A stopper 932 is attached to the other end of the pin 930 to prevent the pin 930 from coming off. The other end is held by a collar 933.

[0111] A pin 950 is inserted from one side to the other side through the long hole 580 of the guide cover 51b and the hole 960 of the guiding part 900. A stopper 952 for preventing the pin 950 from coming out is attached to the other end of the pin 950. The guiding part 900 is movable along the long hole 580 of the guide cover 51b with the pin 950 as a pivot between the first position P1 and the second position P2.

[0112] A tension spring 990 is provided between the plates of the guide cover 51b. One end of the tension spring 990 is attached to the pin 930, and the other end of the tension spring 990 is attached to the pin 950. As a result, the guide portion 900 is biased toward the contact member 9L side (the opposite direction of the arrow I1 in FIG. 12A) by the tension spring 990, and the first engagement portion 910, etc. are maintained in an engaged state with the head 930b of the pin 930.

[0113] (Operation example of the guiding unit 900) Next, a description will be given of an example of the operation of the guiding unit 900 according to the fourth embodiment. In a normal state, the guiding unit 900 is located at the first position P1 by the biasing force of the tension spring 990, as shown in FIG.

[0114] When performing binding work when the gap between the ground G and the reinforcing bar S is narrow, the guide part 900 is manually rotated from the first position P1 to the second position P2 in order to reduce the amount of protrusion from the tip side of the first guide 51 in the direction of the axis Ax of the guide part 900.

[0115] 12A, for example, the operator holds the left and right side surfaces of the guiding part 900 with his / her fingers and pulls the guiding part 900 in the direction of the arrow I1 opposite to the contact member 9L against the elastic force of the tension spring 990. This causes the guiding part 900 to move along the long hole 580 of the guide cover 51b, and as shown in FIG. 12B, the engagement state of the first engagement part 910 of the guiding part 900 with the head 930b of the pin 930 is released.

[0116] Next, as shown in Figures 12B and 12C, the operator rotates the tip portion 900a of the guide portion 900 clockwise (in the direction of arrow I3) opposite the insertion / removal port 53, using the pin 950 as a fulcrum, and moves it to a position where the second engagement portion 920 can engage with the head portion 930b of the pin 930.

[0117] In this state, when the guiding part 900 is released or the gripping force is loosened, as shown in Fig. 12C, the guiding part 900 moves in the direction of the arrow I2 on the contact member 9L side due to compression of the tension spring 990, and the second engagement part 920 engages with the head 930b of the pin 930. By moving the tip part 900a from the first position P1 to the second position P2 by such an operation by the operator, the amount of protrusion of the guiding part 800 from the tip side of the first guide 51 in the direction of the axis Ax can be reduced, and the reinforcing bar S can be inserted into the insertion / removal port 53 to reliably press the contact member 9L.

[0118] According to the fourth embodiment, it is possible to achieve substantially the same effects as the first embodiment. Specifically, when working at a site where the gap between the reinforcing bar S and the ground G is narrow, the amount of protrusion of the guiding part 900 from the tip side of the first guide 51 can be reduced by manually rotating the guiding part 900 before the bundling operation. This allows the reinforcing bar S to be reliably inserted into the insertion / removal opening 53 between the first guide 51 and the second guide 52, and the reinforcing bar S can press the contact members 9L and 9R.

[0119] In the fourth embodiment, the reference for the distance when the guide portion 900 is varied is the abutment portion 11, but this is not limited to this, and as described in the first embodiment, the reference may be the drive portion 8, the handle portions 304hL, 304hR which are the gripping portions, or the tip portion 51a1 of the guide arm 51a.

[0120] Although the embodiment of the present disclosure has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and includes designs within the scope of the gist of the present disclosure. In addition, the effects described in this specification are merely examples and are not limiting, and other effects may also be present.

[0121] For example, in the above embodiment, an example was described in which the guide units 600-900 were applied to the reinforcing bar binding machine 1A in which the first main body 301 having a grip unit such as the handle unit 304hL and the second main body 302 having the twist unit 7 are connected by the long connecting unit 303, but the present invention is not limited to this. For example, the above-mentioned guide units 600-900 can also be applied to the guide unit of a handy reinforcing bar binding machine in which the second main body 302 is provided with a grip unit.

[0122] In the above embodiment, the first guide 51 is provided with the guiding parts 600 to 900, but the present invention is not limited to this. For example, if the length of the second guide 52 in the direction of the axis Ax is longer than that of the first guide 51 and the second guide 52 comes into contact with an obstacle such as the ground G first, the above-mentioned guiding part 600 or the like can be attached to the tip side of the second guide 52.

[0123] Furthermore, in the above-described embodiment, the drive unit 8 drives the cutting unit 6 and the twisting unit 7, etc., but the drive unit 8 may drive only the twisting unit 7, and other components such as the cutting unit 6 may be driven using a separate drive source. [Explanation of symbols]

[0124] 1A,1B,1C,1D Rebar binding machine (binding machine) 3 Feeding section 5 Guide section 7 Twisted section 8 Drive unit 11 Contact part 51 First Guide 52 Second Guide 70 Engagement part 80 Torsion Motor 304hL, 304hR Handle (grip) 600,700,800,900 Induction part 670 Screw (retaining member) 810 First engagement portion 820 Second engagement portion 850b Head (engaged part) 910 First engagement portion 920 Second engagement portion 930b Head (engaged part) Ax axis G ground P1 1st position P2 Second position S Reinforcement bar (binding object) W Wire

Claims

1. A feeding unit that feeds the wire; a guide section that winds the wire fed by the feeding section around an object to be bound; a twisting unit that twists the wire wound around the object to be bound by the guide unit; and a contact portion against which the object to be bound is abutted, The guide portion is a first guide that bends the wire along a periphery of the object to be bound that is abutted against the abutting portion; a second guide that guides the wire that has been shaped by the first guide to the twisting section; a guide portion provided on at least one of the first guide and the second guide, the guide portion guiding the object to be bound between the first guide and the second guide, The guiding portion has a tip portion that is provided so as to be able to come into contact with an obstacle, and the tip portion is configured to be pressed against the obstacle so that a distance between the tip portion and the contact portion can be changed. Binding machine.

2. A feeding unit that feeds the wire; a guide section that winds the wire fed by the feeding section around an object to be bound; a twisting unit that twists the wire wound around the object to be bound by the guide unit; A drive unit that drives the torsion unit, The guide portion is A first guide that bends the wire along a circumference of the object to be bound; a second guide that guides the wire that has been shaped by the first guide to the twisting section; a guide portion provided on at least one of the first guide and the second guide, the guide portion guiding the object to be bound between the first guide and the second guide, The guiding unit has a tip portion that is provided so as to be able to come into contact with an obstacle, and the tip portion is configured to be pressed against the obstacle so that the distance between the tip portion and the driving unit can be changed. Binding machine.

3. A feeding unit that feeds the wire; a guide section that winds the wire fed by the feeding section around an object to be bound; a twisting unit that twists the wire wound around the object to be bound by the guide unit; A gripping portion that is gripped by an operator, The guide portion is A first guide that bends the wire along a circumference of the object to be bound; a second guide that guides the wire that has been shaped by the first guide to the twisting section; a guide portion provided on at least one of the first guide and the second guide, the guide portion guiding the object to be bound between the first guide and the second guide, The guiding unit has a tip portion that is provided so as to be able to come into contact with an obstacle, and the tip portion is configured to be pressed against the obstacle so that the distance between the tip portion and the gripping unit can be changed. Binding machine.

4. A feeding unit that feeds the wire; a guide section that winds the wire fed by the feeding section around an object to be bound; a twisting unit that twists the wire wound around the object to be bound by the guide unit, The guide portion is A first guide that bends the wire along a circumference of the object to be bound; a second guide that guides the wire that has been shaped by the first guide to the twisting section; a guide portion provided on at least one of the first guide and the second guide, the guide portion guiding the object to be bound between the first guide and the second guide, The guiding unit has a tip portion that is provided so as to be able to come into contact with an obstacle, and the tip portion is pressed against the obstacle to change a distance between the tip portion and at least one of the first guide and the second guide. Binding machine.

5. The induction portion is The torsion portion rotates about an axis extending in a direction substantially perpendicular to the axis of the torsion portion. A binding machine according to any one of claims 1 to 4.

6. The tip end of the guide portion is provided on a side of an opening formed between the first guide and the second guide from the shaft. The binding machine according to claim 5.

7. The guide portion moves substantially parallel to the axis of the torsion portion. A binding machine according to any one of claims 1 to 4.

8. The induction portion is a first position in which the guide portion is biased by a spring and a distance between the tip portion of the guide portion and the contact portion is a first distance; and a second position where a distance between the tip end portion of the guide portion and the contact portion is a second distance shorter than the first distance. The strapping machine according to claim 1.

9. The induction portion is a first position in which the driving portion is biased by a spring and a distance between the tip end of the guide portion and the driving portion is a first distance; and a second position where a distance between the tip end of the guide portion and the drive portion is a second distance shorter than the first distance. The strapping machine according to claim 2.

10. The induction section is a first position in which the guide portion is biased by a spring and a distance between the tip end portion of the guide portion and the grip portion is a first distance; and a second position where a distance between the tip end of the guide portion and the grip portion is a second distance shorter than the first distance. The binding machine according to claim 3.

11. The induction section is a first position in which the guide portion is biased by a spring and a distance between the tip end of the guide portion and the tip end of at least one of the first guide and the second guide is a first distance; and a second position where a distance between the tip of the guide portion and the tip of at least one of the first guide and the second guide is a second distance shorter than the first distance. The binding machine according to claim 4.

12. The induction portion is a first engagement portion that fixes the guide portion at the first position; a second engagement portion that fixes the guide portion at the second position; having At least one of the first guide and the second guide is provided with an engaged portion with which the first engaging portion and the second engaging portion are engaged.

12. The binding machine according to any one of claims 8 to 11.

13. In the induction section, The first engaging portion or the second engaging portion is engaged with the engaged portion by rotating the torsion portion about an axis extending in a direction substantially perpendicular to the axis of the torsion portion. The strapping machine of claim 12.

14. The induction portion is When the movable member is moved from the first position to the second position, the movable member is held at the second position by a holding member.

12. The binding machine according to any one of claims 8 to 11.

15. A first body portion; A second body portion; a long connecting portion that connects the first body portion and the second body portion; Equipped with the torsion portion and the drive portion are provided inside the second body portion, the first guide and the second guide are provided at an end portion opposite to the connecting portion connected to the second body portion, The guide portion is provided on a tip side of at least one of the first guide and the second guide. The strapping machine according to claim 2.

16. At least the torsion portion is provided inside the main body portion, the guide portion has a guide surface that is inclined such that a width of an insertion / removal opening formed between the first guide and the second guide becomes wider from the main body portion toward the front side at the first position; 12. The binding machine according to any one of claims 8 to 11.

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