End machine

Abstract

To provide a rebar tying machine that can secure the amount of movement of the contact member that is thrust against the rebar and moves.SOLUTION: A rebar tying machine 1A includes: a first guide 51A for guiding a wire; a second guide 52 for guiding a wire habitually wound by the first guide 51A; a first contact member 9AL (a second contact member 9AR) that is butted against a rebar and moves; and a link portion 96 that transmits the movement of the first contact member 9AL (the second contact member 9AR) to the second guide 52. The first contact member 9AL (the second contact member 9AR) has an action portion 92AL (92AR) that actuates the link portion 96, the link portion 96 having an action shaft 98A in contact with the second guide 52 and an opening 98B supporting the action shaft 98A.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to a binding machine that binds objects to be bound, such as reinforcing bars, with a wire. [Background technology]

[0002] Conventionally, a binding machine known as a rebar binding machine has been proposed in which a wire fed from a wire feeding device is wound around a rebar in a loop, the wire is grasped and twisted with a twisting hook, and the wire is wrapped around the rebar to bind it (see, for example, Patent Document 1).

[0003] The rebar binding machine described in Patent Document 1 has a contact member that engages with the rebar during binding that is movable in the forward and backward directions, and is equipped with a switch that engages when the contact member moves rearward, enabling the binding machine to be operated. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 2949703 Summary of the Invention [Problem to be solved by the invention]

[0005] In the rebar binding machine described in Patent Document 1, if the amount of movement of the contact member cannot be secured, the contact member cannot engage with the switch even if it moves backward, and the binding operation cannot be performed. However, Patent Document 1 did not take into consideration a configuration for securing the amount of movement of the contact member.

[0006] The present disclosure has been made to solve such problems, and aims to provide a binding machine that can ensure the amount of movement of a moving part (contact member) that moves when pressed against an object to be bound. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the binding machine according to the present disclosure includes a main body and A cover guide portion is provided on the main body and has a contact portion against which the object to be bound is brought into contact; and the cover guide portion is movably supported by the cover guide portion. a moving section that moves when it is butted against an object to be bound; a first guide and a second guide that extend in a first direction from one end of the main body section and are arranged in a second direction perpendicular to the first direction with a space therebetween so that the object to be bound can be inserted, and that guide a wire that binds the object to be bound; The actuator has an operating shaft that contacts the second guide and an opening that supports the operating shaft, a guide moving unit that changes the interval from a first distance to a second distance that is shorter than the first distance; 、 Equipped with the second guide is movable toward and away from the first guide; The moving part has an operating part that operates the guide moving part. The second guide is movable to a position where the second guide is moved to a second distance and is movable to an operating position where the binding operation is performed, and the opening has a length along the moving direction of the guide moving part that is greater than the acting axis, and the amount of operation of the guide moving part is greater than the amount of movement of the second guide.

[0008] In this binding machine, in the operation of inserting the object to be bound between the first guide and the second guide, the moving part is pushed by the object to be bound due to the relative movement between the binding machine and the object to be bound, and the moving part moves. When the moving part abuts against the object to be bound and moves to a predetermined position, the guide moving part is activated, changing the distance between the first guide and the second guide from a first distance to a second distance shorter than the first distance, and the operation of binding the object to be bound is performed. Effect of the Invention

[0009] In the binding machine of the present disclosure, a guide moving unit is provided that transmits the movement of the moving unit and changes the distance between the first guide and the second guide from a first distance to a second distance shorter than the first distance. This allows the distance between the first guide and the second guide to be changed from the first distance to the second distance in conjunction with the moving unit, and the amount of movement of the moving unit that moves when it hits the object to be bound is within a predetermined range, allowing the operation of binding the object to be performed. [Brief description of the drawings]

[0010] [Figure 1A] 1 is a side view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment. [Figure 1B] 1 is a side view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment. [Figure 1C]1 is a side view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment. [Figure 1D] 1 is a side view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment. [Diagram 2] 1 is a top view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment. FIG. [Figure 3A] 1 is a front view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment. [Figure 3B] 1 is a rear view showing an example of the overall configuration of the reinforcing bar binding machine of the first embodiment. FIG. [Figure 4] 1 is a side view showing an example of an internal configuration of the reinforcing bar binding machine of the first embodiment. FIG. [Figure 5A] FIG. 2 is a side view showing a main part of the internal configuration of the reinforcing bar binding machine of the first embodiment. [Figure 5B] FIG. 2 is a side view showing a main part of the internal configuration of the reinforcing bar binding machine of the first embodiment. [Figure 6A] FIG. 2 is a side view showing the configuration of the main parts of the reinforcing bar binding machine of the first embodiment. [Figure 6B] FIG. 2 is a side view showing the configuration of the main parts of the reinforcing bar binding machine of the first embodiment. [Figure 7] 1 is a perspective view showing a configuration of a main part of a reinforcing bar binding machine according to a first embodiment; [Figure 8] 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment; [Figure 9A] 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment; [Figure 9B] 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment; [Figure 10] 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment; [Figure 11] 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment; [Figure 12] 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment; [Figure 13]1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment; [Figure 14] 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment; [Figure 15A] 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment; [Figure 15B] 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment; [Figure 16] FIG. 2 is a functional block diagram of the reinforcing bar binding machine of the first embodiment. [Figure 17A] FIG. 1 is a perspective view showing an orientation detection sensor according to a first embodiment. [Figure 17B] FIG. 11 is a perspective view showing an orientation detection sensor according to a second embodiment. [Figure 18] FIG. 2 is an explanatory diagram showing a binding tolerance range of the reinforcing bar binding machine of the first embodiment. [Figure 19A] 4 is a flowchart showing an example of the operation of the reinforcing bar binding machine of the first embodiment. [Figure 19B] 6 is a flowchart showing another example of the operation of the reinforcing bar binding machine of the first embodiment. [Figure 20] 11 is a perspective view showing an example of the function and effect of the sensor board unit; FIG. [Figure 21] FIG. 11 is a perspective view showing an example of a reinforcing bar binding machine according to a second embodiment. [Figure 22] FIG. 11 is a perspective view showing an example of a reinforcing bar binding machine according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0012] <Example of the reinforcing bar binding machine according to the first embodiment> Fig. 1A, Fig. 1B, Fig. 1C and Fig. 1D are side views showing an example of the overall configuration of the reinforcing bar binding machine of the first embodiment, Fig. 2 is a top view showing an example of the overall configuration of the reinforcing bar binding machine of the first embodiment, Fig. 3A is a front view showing an example of the overall configuration of the reinforcing bar binding machine of the first embodiment, Fig. 3B is a rear view showing an example of the overall configuration of the reinforcing bar binding machine of the first embodiment, Fig. 4 is a side view showing an example of the internal configuration of the reinforcing bar binding machine of the first embodiment, Fig. 5A and Fig. 5B are side views showing the main parts of the internal configuration of the reinforcing bar binding machine of the first embodiment.

[0013] The reinforcing bar binding machine 1A of the first embodiment includes a first main body 301 configured to be held by hand, a second main body 302 equipped with a mechanism for binding reinforcing bars S with wire W, and a long connecting portion 303 connecting the first main body 301 and the second main body 302. The first main body 301 includes a pair of handle portions 304hL and 304hR that can be held by an operator. The first main body 301 also includes a power switch 110 for turning the power of the reinforcing bar binding machine 1A on and off, and an operating portion 111 having a dial or the like for adjusting the binding force.

[0014] The second main body 302 is an example of a main body, and has an exterior made of resin. 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 regulating unit 4 that imparts a curl to the wire W fed by the feed unit 3, and a guide unit 5 that guides the wire W that has been curled by the regulating unit 4. 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, and a driving 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] 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 gears 30, the feed section 3 can feed the wire W in both the forward direction indicated by arrow F and the reverse direction indicated by 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] The regulating section 4 includes first to third regulating members that contact the wire W at multiple locations along the feed direction of the wire W fed by the feed section 3, at least three locations in this example, thereby causing the wire W to curl along the feed path Wf of the wire W as shown by the dashed line in Figure 5B.

[0020] The first regulating member of the regulating unit 4 is constituted by the fixed blade unit 60 described above. The regulating unit 4 also includes a regulating member 42 as a second regulating member downstream of the fixed blade unit 60 with respect to the forward feed of the wire W indicated by the arrow F, and a regulating member 43 as a third regulating member downstream of the regulating member 42. The regulating members 42 and 43 are constituted by cylindrical members, and the wire W comes into contact with their outer circumferential surfaces.

[0021] In the restricting unit 4, the fixed blade unit 60, the restricting members 42 and 43 are arranged on a curve in accordance with the feed path Wf of the wire W, which is a substantially circular spiral. The fixed blade unit 60 has an opening 60a through which the wire W passes provided on the feed path Wf of the wire W. The restricting member 42 is provided radially inside the feed path Wf of the wire W. The restricting member 43 is provided radially outside the feed path Wf of the wire W.

[0022] 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 them, so that the wire W is curled along the feed path Wf of the wire W.

[0023] The regulating unit 4 includes a transmission mechanism 44 that transmits the movement of the driving unit 8 to the regulating member 42. The regulating member 42 is configured to be movable to a position where it comes into contact with the wire W when the feeding unit 3 feeds the wire W in the forward direction to give the wire W a curl, and to a position where it does not come into contact with the wire W when the feeding unit 3 feeds the wire W in the reverse direction to wind the wire W around the reinforcing bar S.

[0024] The guide section 5A includes a first guide 51A that guides the wire W, a second guide 52 that guides the wire W that has been curled by the regulating section 4 and the first guide 51A to the twisting section 7, and a third guide 55 that regulates the radial position of the wire W with respect to the feed path Wf.

[0025] The first guide 51A is attached to the front end of the second main body 302 and extends in a first direction, which is the front-rear direction indicated by the arrow A1. The first guide 51A includes a groove 51h having a guide surface 51g with which the wire W fed by the feed unit 3 slides, as shown in Figs. 5A and 5B.

[0026] In the first guide 51A, when the side attached to the second main body portion 302 is the base end side and the side extending in the first direction from the second main body portion 302 is the tip side, the base end side is attached to the second main body portion 302 by a screw or the like.

[0027] The first guide 51A has the restricting member 42 provided on the base end side and the restricting member 43 provided on the tip end side. In the first guide 51A, a gap through which the wire W can pass is formed between a guide surface 51g and an outer circumferential surface of the restricting member 42. In the first guide 51A, a part of the outer circumferential surface of the restricting member 43 protrudes onto the guide surface 51g.

[0028] 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 51A 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 51A 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 51A and the second guide 52.

[0029] The second guide 52 includes a pair of side guides 52a that face each other along a third direction indicated by an arrow A3, which is a left-right direction perpendicular to the first and second directions. In the second guide 52, when the side attached to the second main body 302 is defined as the base end side and the side extending from the second main body 302 in the first direction is defined as the tip end side, the distance between the pair of side guides 52a narrows from the tip end side to the base end side. The base end sides of the pair of side guides 52a face each other at a distance that allows the wire W to pass through.

[0030] The second guide 52 is attached to the second main body 302 with the base end supported by the shaft 52b via the third guide 55 attached to the second main body 302 by a screw or the like. The axis of the shaft 52b is along the third direction. The second guide 52 is rotatable relative to the second main body 302 with the shaft 52b as a fulcrum. The tip end 52c of the second guide 52 is movable in the second direction indicated by the arrow A2 in a direction approaching and moving away from the end 51c of the first guide 51A facing the second guide 52. The end P2 of the groove 51h is exposed at the end 51c of the first guide 51A.

[0031] The second guide 52, in conjunction with a pair of contact members described later, moves about axis 52b to move between a first position in which the distance between the tip end 52c of the second guide 52 and the end 51c of the first guide 51A is a first distance, as shown in FIG. 5A, and a second position in which the distance between the end 52c of the second guide 52 and the end 51c of the first guide 51A is a second distance shorter than the first distance, as shown in FIG. 5B.

[0032] When the second guide 52 is in the second position, the end 52c of the second guide 52 and the end 51c of the first guide 51A are spaced apart. When the second guide 52 is in the first position, the space between the end 52c of the second guide 52 and the end 51c of the first guide 51A is widened, making it easier to insert the rebar into the insertion / removal opening 53 between the first guide 51A and the second guide 52.

[0033] When the second guide 52 is in the second position, the side guide 52a is located on the feed path Wf of the wire W shown in Fig. 5B. When the second guide 52 is in the first position, the side guide 52a may be located on the feed path Wf of the wire W, or may be located outside the feed path Wf of the wire W, as long as the distance between the end 52c of the second guide 52 and the end 51c of the first guide 51A is wider than when the second guide 52 is in the second position.

[0034] The second guide 52 is biased in a direction to move to the first position by a biasing member 54 formed of a torsion coil spring or the like, and is maintained in a state where it has been moved to the first position.

[0035] The second guide 52 includes a receiving portion 56 that receives the operation of a pair of contact members, which will be described later, via a link portion. The receiving portion 56 is configured with a surface perpendicular to the lower surface of the second guide 52, or a surface inclined with respect to a direction perpendicular to the lower surface of the second guide 52. The receiving portion 56 is configured, for example, by providing a surface on the lower surface of the second guide 52 that protrudes along the rotation direction of the second guide 52 with the shaft 52b as a fulcrum. The receiving portion 56 is inclined, for example, in a direction parallel to the lower surface of the second guide 52, in a direction in which the distance from the shaft 52b to the surface of the receiving portion 56 becomes longer as it approaches the second guide 52.

[0036] The guide portion 5A includes a guide portion 59 that guides the reinforcing bar S to the insertion / removal opening 53. The guide portion 59 is provided on the tip side of the first guide 51A, and is configured by providing a surface that narrows the distance between the first guide 51A and the second guide 52 from the tip side of the guide portion 59 toward the base end side. Specifically, the guide portion 59 is configured by an inclined surface that is inclined from the tip P1 of the first guide 51A toward the vicinity of the end P2 of the groove portion 51h on the tip side of the first guide 51A in the first direction indicated by the arrow A1 in the direction in which the distance between the first guide 51A and the second guide 52 narrows.

[0037] The guide portion 5A includes a protruding portion 57 on the first guide 51A. The protruding portion 57 is configured by providing a portion that protrudes to the side of the first guide 51A along the third direction indicated by the arrow A3. In this example, the first guide 51A has the groove portion 51h having the above-mentioned guide surface 51g and the regulating member 43, and the guide arm 51d that guides the wire W is covered with a cover portion 57A made of a metal plate. The protruding portion 57 is configured in such a manner that the upper end portion of the cover portion 57A that covers one side of the guide arm 51d and the upper end portion of the cover portion 57A that covers the other side are each bent outward along the third direction. The protruding portion 57 may be configured to be provided on the guide arm 51d. Also, the first guide 51A may have a configuration in which the guide arm 51d and the cover portion 57A are integrated, and the protrusion 57 may be provided integrally with the first guide 51A having the integrated configuration of the guide arm 51d and the cover portion 57A. Also, the protrusion 57 may be configured by providing an uneven shape on the side of the cover portion 57A, the side of the guide arm 51d, and the side of the first guide 51A having the integrated configuration of the guide arm 51d and the cover portion 57A.

[0038] 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 4 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.

[0039] 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 rotation centers of the operating unit 71 and the engagement unit 70 are referred to as the axis Ax. In this example, a first direction indicated by an arrow A1 is a direction along the axis Ax.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Figures 6A and 6B are side views showing the main configuration of the reinforcing bar tying machine of the first embodiment, and Figure 7 is an oblique view showing the main configuration of the reinforcing bar tying machine of the first embodiment. Next, we will explain the configuration of the contact member and the link section that links the movement of the contact member to the second guide.

[0044] The reinforcing bar binding machine 1A includes a first contact member 9AL and a second contact member 9AR that come into contact with the reinforcing bar S, which is the object to be bound, inserted into an insertion / removal port 53 between a first guide 51A and a second guide 52. The reinforcing bar binding machine 1A also includes a link section 96 that transmits the movement of the first contact member 9AL and the second contact member 9AR to the second guide 52.

[0045] The first contact member 9AL is an example of a moving part, and is provided on one side of the second main body portion 302, and includes an abutting portion 91AL that abuts against the reinforcing bar S, and an action portion 92AL that actuates the link portion 96. The second contact member 9AR is an example of a moving part, and is provided on the other side of the second main body portion 302, and includes an abutting portion 91AR that abuts against the reinforcing bar S, and an action portion 92AR that actuates the link portion 96.

[0046] The first contact member 9AL is movably arranged along a first direction indicated by arrow A1, and moves between a standby position in which the abutment portion 91AL protrudes into the insertion / removal opening 53, as shown in FIG. 1A, and an operating position in which the second guide 52 is moved to a second position, as shown in FIG. 1C.

[0047] The second contact member 9AR is movably arranged along a first direction indicated by arrow A1, and moves between a standby position in which the abutment portion 91AR protrudes into the insertion / removal opening 53, as shown in FIG. 1B, and an operating position in which the second guide 52 is moved to a second position, as shown in FIG. 1D.

[0048] The link portion 96 is an example of a guide moving portion, and includes a first link member 96L corresponding to the first contact member 9AL and a second link member 96R corresponding to the second contact member 9AR. In the link portion 96, the first link member 96L and the second link member 96R are rotatably supported by a shaft 96A which is a movement fulcrum.

[0049] The link portion 96 includes an acted upon portion 97L that is connected to the first contact member 9AL on one side of the first link member 96L with respect to the shaft 96A. The acted upon portion 97L is formed of a member that protrudes laterally from the first link member 96L and comes into contact with the acting portion 92AL of the first contact member 9AL.

[0050] The link portion 96 also includes an acted upon portion 97R that is connected to the second contact member 9AR on one side of the second link member 96R with respect to the shaft 96A. The acted upon portion 97R is formed of a member that protrudes laterally from the second link member 96R, and comes into contact with the acting portion 92AR of the second contact member 9AR.

[0051] Furthermore, the link portion 96 includes a connecting portion 98 that connects the first link member 96L and the second link member 96R on the other side of the shaft 96A. The connecting portion 98 includes an action shaft 98A that contacts the receiving portion 56 of the second guide 52, an opening 98B that supports the action shaft 98A, and a spring 98C that presses the action shaft 98A.

[0052] The action shaft 98A is cylindrical in shape and has a length sufficient to connect the first link member 96L and the second link member 96R.

[0053] The opening 98B is provided in each of the first link member 96L and the second link member 96R. The opening 98B is configured such that the circumferential length along the rotation direction of the link part 96 about the shaft 96A and the radial length perpendicular thereto are greater than the diameter of the action shaft 98A. This allows the action shaft 98A inserted in the opening 98B to move in the circumferential direction or tangential direction along the rotation direction of the link part 96 about the shaft 96A and in the radial direction perpendicular thereto.

[0054] The spring 98C is formed of a leaf spring, and biases the operating shaft 98A toward the receiving portion 56 of the second guide 52.

[0055] 8 to 15A and 15B are explanatory diagrams showing the configuration and operation and effect of the main part of the reinforcing bar binding machine of the first embodiment. Next, the details of the configuration for attaching the contact members and the link parts will be described.

[0056] The reinforcing bar binding machine 1A covers a predetermined portion on the front side of the second main body portion 302, and includes a cover guide portion 11 to which the first contact member 9AL, the second contact member 9AR, and the link portion 96 are attached. The reinforcing bar binding machine 1A also includes a first cover portion 12L and a second cover portion 12R attached to the cover guide portion 11.

[0057] The cover guide portion 11 includes a first side wall portion 11L attached to one side portion 302L of the second main body portion 302, a second side wall portion 11R attached to the other side portion 302R of the second main body portion 302, and a connection portion 11U connecting the first side wall portion 11L and the second side wall portion 11R.

[0058] 11, the cover guide portion 11 has a first side wall portion 11L, a second side wall portion 11R, and a connection portion 11U that are integrally formed from a metal plate material. The cover guide portion 11 has the first side wall portion 11L and the second side wall portion 11R opposed to each other at a distance equal to the width dimension of the second main body portion 302 in the third direction indicated by the arrow A3.

[0059] The first side wall 11L extends from one side of the connection portion 11U in a second direction indicated by an arrow A2 along one side 302L of the second main body portion 302. The second side wall 11R extends from the other side of the connection portion 11U in the second direction indicated by an arrow A2 along the other side 302R of the second main body portion 302. The connection portion 11U is provided with a groove 11H into which the first guide 51A fits. The groove 11H opens to a width that allows the first guide 51A to fit therein, and as shown in FIG. 13, both the left and right sides of the first guide 51A are supported by metal.

[0060] The first cover portion 12L is an example of a cover portion, and is configured in a shape that covers a predetermined portion of the first side wall portion 11L of the cover guide portion 11. The second cover portion 12R is an example of a cover portion, and is configured in a shape that covers a predetermined portion of the second side wall portion 11R of the cover guide portion 11.

[0061] The cover guide portion 11 includes a first contact portion 13L at a front end portion of the first side wall portion 11L, and a second contact portion 13R at a front end portion of the second side wall portion 11R.

[0062] The first contact portion 13L is configured in a form in which the front end portion of the first side wall portion 11L is bent toward the second side wall portion 11R, and covers the front end portion of one side portion 302L of the second main body portion 302. The second contact portion 13R is configured in a form in which the front end portion of the second side wall portion 11R is bent toward the first side wall portion 11L, and covers the front end portion of the other side portion 302R of the second main body portion 302.

[0063] The cover guide portion 11 has a first guide recess 14L1 and a second guide recess 14L2 on the first side wall portion 11L. The first guide recess 14L1 and the second guide recess 14L2 are examples of guide portions, and are formed of elongated openings extending along the moving direction of the first contact member 9AL, which is the first direction indicated by the arrow A1.

[0064] The first cover portion 12L includes a third guide recess 14L3. The third guide recess 14L3 is an example of a guide portion, and is configured as an elongated recess extending along the movement direction of the first contact member 9AL.

[0065] The cover guide portion 11 includes a spring support portion 15L1 on the first side wall portion 11L. The spring support portion 15L1 is configured as a recess into which the spring 95AL, which is a compression coil spring, is inserted, with the direction in which the spring 95AL expands and contracts being aligned with the direction in which the first contact member 9AL moves.

[0066] The first cover portion 12L includes a spring support portion 15L2. The spring support portion 15L2 is configured as a recess into which the spring 95AL fits, with the direction in which the spring 95AL expands and contracts being aligned with the direction in which the first contact member 9AL moves.

[0067] When the first cover portion 12L is attached to the first side wall portion 11L, as shown in FIG. 9A, the first guide recess 14L1, the second guide recess 14L2, the third guide recess 14L3, and the spring support portions 15L1 and 15L2 are arranged on the same axis Bx along the movement direction of the first contact member 9AL.

[0068] The cover guide portion 11 has a first guide recess 14R1 and a second guide recess 14R2 on the second side wall portion 11R. The first guide recess 14R1 and the second guide recess 14R2 are examples of guide portions, and are formed of elongated openings extending along the movement direction of the second contact member 9AR.

[0069] The second cover portion 12R includes a third guide recess 14R3. The third guide recess 14R3 is an example of a guide portion, and is configured as an elongated recess extending along the movement direction of the second contact member 9AR.

[0070] The cover guide portion 11 includes a spring support portion 15R1 on the second side wall portion 11R. The spring support portion 15R1 is configured as a recess into which the spring 95AR, which is a compression coil spring, is inserted, with the direction in which the spring 95AR expands and contracts being aligned with the direction in which the second contact member 9AR moves.

[0071] The second cover portion 12R includes a spring support portion 15R2. The spring support portion 15R2 is configured as a recess into which the spring 95AR fits, with the direction in which the spring 95AR expands and contracts being aligned with the direction in which the second contact member 9AR moves.

[0072] When the second cover portion 12R is attached to the second side wall portion 11R, as shown in FIG. 9B, the first guide recess 14R1, the second guide recess 14R2, and the third guide recess 14R3, and the spring support portions 15R1 and 15R2 are arranged coaxially along the movement direction of the second contact member 9AR.

[0073] Next, the contact members will be described in detail. The first contact member 9AL includes a guided portion 90AL on which a contact portion 91AL and an action portion 92AL are provided, and a detection portion 93AL. The second contact member 9AR includes a guided portion 90AR on which a contact portion 91AR and an action portion 92AR are provided, and a detection portion 93AR.

[0074] The first contact member 9AL has a guided portion 90AL made of a plate-like metal or the like, which is attached between the first side wall portion 11L of the cover guide portion 11 and the first cover portion 12L.

[0075] The first contact member 9AL is provided on one surface of the guided portion 90AL facing the first side wall portion 11L of the cover guide portion 11 with a first guide protrusion 94AL1 and a second guide protrusion 94AL2.

[0076] The first guide protrusion 94AL1 protrudes in a direction perpendicular to the movement direction of the first contact member 9AL and fits into the first guide recess 14L1 of the first side wall 11L. The second guide protrusion 94AL2 protrudes in a direction perpendicular to the movement direction of the first contact member 9AL and fits into the second guide recess 14L2 of the first side wall 11L.

[0077] The first contact member 9AL also has a third guide protrusion 94AL3 on the other surface of the guided portion 90AL facing the first cover portion 12L attached to the first side wall portion 11L of the cover guide portion 11. The third guide protrusion 94AL3 protrudes in a direction perpendicular to the moving direction of the first contact member 9AL, and enters the third guide recess 14L3 of the first cover portion 12L.

[0078] Furthermore, the first contact member 9AL has a spring attachment portion 94AL4 on the rear end side of the guided portion 90AL. The spring 95AL is attached to the spring attachment portion 94AL4 with the direction in which the spring 95AL expands and contracts aligned with the movement direction of the first contact member 9AL.

[0079] The first contact member 9AL has a first guide protrusion 94AL1, a second guide protrusion 94AL2, a third guide protrusion 94AL3, a spring mounting portion 94AL4, and a spring 95AL mounted on the spring mounting portion 94AL4, which are arranged in a straight line along the movement direction of the first contact member 9AL.

[0080] The first contact member 9AL is provided with an abutment portion 91AL on the front end side of the guided portion 90AL. The abutment portion 91AL is formed of a surface in a direction intersecting with the moving direction of the first contact member 9AL.

[0081] The first contact member 9AL is integral with the abutting portion 91AL and has an action portion 92AL provided on a side of the guided portion 90AL. The action portion 92AL has a slope inclined with respect to the moving direction of the first contact member 9AL. Alternatively, the action portion 92AL has a slope inclined with respect to the moving direction of the first contact member 9AL and a vertical surface. The action portion 92AL may have a vertical surface and a horizontal surface without having a slope inclined with respect to the moving direction of the first contact member 9AL. The first contact member 9AL has a space between the guided portion 90AL and the action portion 92AL, into which the first cover portion 12L fits.

[0082] The first contact member 9AL is provided with a detection portion 93AL integral with the guided portion 90AL. The detection portion 93AL protrudes in the direction of the second contact member 9AR, intersecting the moving direction of the first contact member 9AL.

[0083] The second contact member 9AR has a guided portion 90AR made of a plate-like metal or the like, which is attached between the second side wall portion 11R of the cover guide portion 11 and the second cover portion 12R.

[0084] The second contact member 9AR includes a first guide protrusion 94AR1 and a second guide protrusion 94AR2 on one surface of a guided portion 90AR facing the second side wall portion 11R of the cover guide portion 11.

[0085] The first guide protrusion 94AR1 protrudes in a direction perpendicular to the movement direction of the second contact member 9AR and enters into the first guide recess 14R1 of the second side wall 11R. The second guide protrusion 94AR2 protrudes in a direction perpendicular to the movement direction of the second contact member 9AR and enters into the second guide recess 14R2 of the second side wall 11R.

[0086] The second contact member 9AR also has a third guide protrusion 94AR3 on the other surface of the guided portion 90AR facing the second cover portion 12R attached to the second side wall portion 11R of the cover guide portion 11. The third guide protrusion 94AR3 protrudes in a direction perpendicular to the moving direction of the second contact member 9AR, and enters the third guide recess 14R3 of the second cover portion 12R.

[0087] Furthermore, the second contact member 9AR includes a spring attachment portion 94AR4 on the rear end side of the guided portion 90AR. The spring 95AR is attached to the spring attachment portion 94AR4 with the direction in which the spring 95AR expands and contracts aligned with the movement direction of the second contact member 9AR.

[0088] The second contact member 9AR has a first guide protrusion 94AR1, a second guide protrusion 94AR2, a third guide protrusion 94AR3, a spring mounting portion 94AR4, and a spring 95AR mounted on the spring mounting portion 94AR4, which are arranged in a straight line along the movement direction of the second contact member 9AR.

[0089] The second contact member 9AR is provided with an abutment portion 91AR on the front end side of the guided portion 90AR. The abutment portion 91AR is formed of a surface in a direction intersecting with the moving direction of the second contact member 9AR.

[0090] The second contact member 9AR is integral with the abutting portion 91AR and has an action portion 92AR provided on a side of the guided portion 90AR. The action portion 92AR has a slope inclined with respect to the moving direction of the second contact member 9AR. Alternatively, the action portion 92AR has a slope inclined with respect to the moving direction of the second contact member 9AR and a vertical surface. The action portion 92AR may have a vertical surface and a horizontal surface without having a slope inclined with respect to the moving direction of the second contact member 9AR. The second contact member 9AR has a space between the guided portion 90AR and the action portion 92AR, into which the second cover portion 12R fits.

[0091] The second contact member 9AR is provided with a detection portion 93AR integral with the guided portion 90AR. The detection portion 93AR protrudes in the direction of the first contact member 9AL, intersecting the moving direction of the second contact member 9AR.

[0092] Next, the mounting structure of the cover guide portion 11 and the like will be described. The position of the cover guide portion 11 relative to the second main body portion 302 is determined by a positioning pin 16p. The first side wall portion 11L of the cover guide portion 11 is mounted to one side portion 302L of the second main body portion 302 by a screw 16La. Furthermore, the first side wall portion 11L of the cover guide portion 11 is mounted to one side portion 302L of the second main body portion 302 by a screw 16Lb via the first cover portion 12L.

[0093] For this reason, the cover guide portion 11 is provided with holes 17p in a predetermined arrangement through which the positioning pin 16p passes. The second main body portion 302 is provided with holes 18p in a predetermined arrangement through which the positioning pin 16p passes. The holes 18p are formed with a diameter larger than that of the positioning pin 16p, and the first guide 51A, in this example, the guide arm 51d constituting the first guide 51A, is provided with a hole (not shown) with a diameter equivalent to that of the positioning pin 16p in accordance with the position of the holes 18p. Furthermore, the first cover portion 12L is provided with a restricting portion 18pL that suppresses the positioning pin 16p from coming off, and the second cover portion 12R is provided with a restricting portion 18pR that suppresses the positioning pin 16p from coming off.

[0094] The cover guide portion 11 has holes, through which the screws 16La and 16Lb are passed, provided in a predetermined arrangement in the first side wall portion 11L. The first cover portion 12L has holes, through which the screws 16Lb are passed, provided in a predetermined arrangement. Furthermore, screw holes, through which the screws 16La and 16Lb are fastened, are provided in a predetermined arrangement in one side portion 302L of the second main body portion 302.

[0095] In addition, the cover guide portion 11 has the first cover portion 12L attached to the first side wall portion 11L with the screws 16Lc. For this purpose, the first cover portion 12L is provided with holes through which the screws 16Lc are passed in a predetermined arrangement. Also, the first side wall portion 11L is provided with screw holes 17Lc through which the screws 16Lc are fastened in a predetermined arrangement.

[0096] Specifically, the cover guide portion 11 is placed at a predetermined position on the second main body portion 302, and a positioning pin 16p is passed through a hole portion 17p, thereby determining the position of the cover guide portion 11 relative to the second main body portion 302 via a hole portion (not shown) of the guide arm 51d. The cover guide portion 11 has a screw 16La passed through a hole portion (not shown) penetrating the first side wall portion 11L, and the screw 16La is fastened to a screw hole (not shown) provided in one side portion 302L of the second main body portion 302. In order to enable the screw 16La to be operated without removing the link portion 96, the link portion 96 is provided with an opening portion 99 penetrating the first link member 96L and the second link member 96R.

[0097] In addition, the cover guide portion 11 has a screw 16Lb passed through a hole portion (not shown) that penetrates the first cover portion 12L and then passed through a hole portion 18Lb that penetrates the first side wall portion 11L, and this screw 16Lb is fastened to a screw hole (not shown) provided in one side portion 302L of the second main body portion 302.

[0098] Furthermore, in the cover guide portion 11, a screw 16Lc is passed through a hole (not shown) penetrating the first cover portion 12L, and this screw 16Lc is fastened to a screw hole 17Lc provided in the first side wall portion 11L.

[0099] The second side wall portion 11R of the cover guide portion 11 is attached to the other side portion 302R of the second main body portion 302 by the screw 16Ra. Also, the second side wall portion 11R of the cover guide portion 11 is attached to the other side portion 302R of the second main body portion 302 by the screw 16Rb via the second cover portion 12R.

[0100] For this reason, holes through which the screws 16Ra and 16Rb are passed are provided in a predetermined arrangement in the second side wall portion 11R of the cover guide portion 11. Also, holes through which the screws 16Rb are passed are provided in a predetermined arrangement in the second cover portion 12R. Furthermore, screw holes through which the screws 16Ra and 16Rb are fastened are provided in a predetermined arrangement in the other side portion 302R of the second main body portion 302.

[0101] In addition, the cover guide portion 11 has the second cover portion 12R attached to the second side wall portion 11R with the screws 16Rc. For this purpose, the second cover portion 12R has holes through which the screws 16Rc are passed, which are provided in a predetermined arrangement. Also, the second side wall portion 11R has screw holes, into which the screws 16Rc are fastened, which are provided in a predetermined arrangement.

[0102] Specifically, the cover guide portion 11 has a screw 16Ra passed through a hole portion (not shown) that penetrates the second side wall portion 11R, and this screw 16Ra is fastened to a screw hole (not shown) provided in the other side portion 302R of the second main body portion 302.

[0103] In addition, the cover guide portion 11 has a screw 16Rb passed through a hole portion (not shown) that penetrates the second cover portion 12R, which is passed through a hole portion 18Rb that penetrates the second side wall portion 11R, and this screw 16Rb is fastened to a screw hole (not shown) provided in the other side portion 302R of the second main body portion 302.

[0104] Furthermore, in the cover guide portion 11, a screw 16Rc is passed through a hole (not shown) penetrating the second cover portion 12R, and this screw 16Rc is fastened to a screw hole (not shown) provided in the second side wall portion 11R.

[0105] As a result, the cover guide portion 11 is attached to the second main body portion 302 such that the first side wall portion 11L covers a portion of one side portion 302L of the second main body portion 302, the second side wall portion 11R covers a portion of the other side portion 302R of the second main body portion 302, and the connection portion 11U covers a portion of the top surface portion 302U of the second main body portion 302.

[0106] Further, the cover guide portion 11 has a first cover portion 12L attached to the first side wall portion 11L, and the cover guide portion 11 has a second cover portion 12R attached to the second side wall portion 11R.

[0107] When the first cover portion 12L is attached to the first side wall portion 11L, the first contact member 9AL has the first guide protrusion 94AL1 inserted into the first guide recess 14L1 of the first side wall portion 11L of the cover guide portion 11, and the second guide protrusion 94AL2 inserted into the second guide recess 14L2 of the first side wall portion 11L.

[0108] The spring 95AL attached to the spring attachment portion 94AL4 of the first contact member 9AL is inserted into the spring support portion 15L1 of the first side wall portion 11L. Furthermore, the third guide protrusion 94AL3 of the first contact member 9AL is inserted into the third guide recess 14L3 of the first cover portion 12L. The spring 95AL attached to the spring attachment portion 94AL4 is inserted into the spring support portion 15L2 of the first cover portion 12L.

[0109] As a result, the first contact member 9AL is supported so as to be movable along the extending direction of the first guide recess 14L1, the second guide recess 14L2, and the third guide recess 14L3.

[0110] In addition, the first contact member 9AL has portions that guide the movement of the first contact member 9AL, such as the first guide protrusion 94AL1 and the first guide recess 14L1, and the spring 95AL, which are covered by the first cover portion 12L. Furthermore, the abutment portion 91AL and the action portion 92AL of the first contact member 9AL are exposed from the first cover portion 12L.

[0111] The first contact member 9AL is biased by the spring 95AL in a direction in which the abutment portion 91AL protrudes from the first abutment portion 13L of the first side wall portion 11L. When the first cover portion 12L is attached to the first side wall portion 11L, the restriction portion 18pL faces the end of the positioning pin 16p, preventing the positioning pin 16p from coming off.

[0112] When the second cover portion 12R is attached to the second side wall portion 11R, the second contact member 9AR has the first guide protrusion 94AR1 inserted into the first guide recess 14R1 of the second side wall portion 11R of the cover guide portion 11, and the second guide protrusion 94AR2 inserted into the second guide recess 14R2 of the second side wall portion 11R.

[0113] The spring 95AR attached to the spring attachment portion 94AR4 of the second contact member 9AR is inserted into the spring support portion 15R1 of the second side wall portion 11R. Furthermore, the third guide protrusion 94AR3 of the second contact member 9AR is inserted into the third guide recess 14R3 of the second cover portion 12R. The spring 95AR attached to the spring attachment portion 94AR4 is inserted into the spring support portion 15R2 of the second cover portion 12R.

[0114] As a result, the second contact member 9AR is supported so as to be movable along the extending direction of the first guide recess 14R1, the second guide recess 14R2, and the third guide recess 14R3.

[0115] The first contact member 9AL and the second contact member 9AR are independent components and can be operated independently.

[0116] In addition, the second contact member 9AR has portions that guide the movement of the second contact member 9AR, such as the first guide protrusion 94AR1 and the first guide recess 14R1, and the spring 95AR, which are covered by the second cover portion 12R. Furthermore, the second contact member 9AR has an abutment portion 91AR and an action portion 92AR that are exposed from the second cover portion 12R.

[0117] The second contact member 9AR is biased by the spring 95AR in a direction in which the abutment portion 91AR protrudes from the second abutment portion 13R of the second side wall portion 11R. When the second cover portion 12R is attached to the second side wall portion 11R, the restriction portion 18pR faces the end portion of the positioning pin 16p, preventing the positioning pin 16p from coming out.

[0118] Next, a configuration for detecting a pair of contact members will be described. The second main body 302 includes a sensor attachment section 310. As shown in Fig. 12, the sensor attachment section 310 is configured by providing a concave opening on the upper surface 302U of the second main body 302, and is attached in a form in which the sensor board unit 311 is exposed.

[0119] The sensor board unit 311 includes a first sensor 312L that detects the detection portion 93AL of the first contact member 9AL, and a second sensor 312R that detects the detection portion 93AR of the second contact member 9AR.

[0120] The first sensor 312L is, for example, a magnetic sensor, and its output changes depending on the presence or absence of the detection unit 93AL. When the first contact member 9AL is attached to the cover guide portion 11, the detection unit 93AL enters the sensor attachment portion 310. When the first contact member 9AL moves in the first direction indicated by the arrow A1, the detection unit 93AL moves between a position where it faces the first sensor 312L without contacting it and a position where it does not face the first sensor 312L.

[0121] In this example, when the first contact member 9AL is moved to the standby position, the detection unit 93AL is in a position not facing the first sensor 312L. When the first contact member 9AL is moved to the operating position, the detection unit 93AL is in a position facing the first sensor 312L. When the first contact member 9AL is moved to the standby position, the detection unit 93AL is in a position not facing the first sensor 312L, and when the first contact member 9AL is moved to the operating position, the detection unit 93AL may pass through a position facing the first sensor 312L. When the first contact member 9AL is moved to the standby position, the detection unit 93AL is in a position facing the first sensor 312L, and when the first contact member 9AL is moved to the operating position, the detection unit 93AL may be in a position not facing the first sensor 312L.

[0122] The second sensor 312R is, for example, a magnetic sensor, and its output changes depending on the presence or absence of the detection unit 93AR. When the second contact member 9AR is attached to the cover guide portion 11, the detection unit 93AR enters the sensor attachment portion 310. When the first contact member 9AL moves in the first direction indicated by the arrow A1, the detection unit 93AR moves between a position where it faces the second sensor 312R without contacting it and a position where it does not face the second sensor 312R.

[0123] In this example, when the second contact member 9AR is moved to the standby position, the detection unit 93AR is in a position not facing the second sensor 312R. When the second contact member 9AR is moved to the operating position, the detection unit 93AR is in a position facing the second sensor 312R. When the second contact member 9AR is moved to the standby position, the detection unit 93AR is in a position not facing the second sensor 312R, and when the second contact member 9AR is moved to the operating position, the detection unit 93AR may pass through a position facing the second sensor 312R. When the second contact member 9AR is moved to the standby position, the detection unit 93AR is in a position facing the second sensor 312R, and when the second contact member 9AR is moved to the operating position, the detection unit 93AR may be in a position not facing the second sensor 312R.

[0124] 16 is a functional block diagram of the reinforcing bar binding machine of the first embodiment. In the reinforcing bar binding machine 1A, the control unit 100A detects the outputs of a first sensor 312L that detects the detection unit 93AL when the first contact member 9AL is pressed against the reinforcing bar S, a second sensor 312R that detects the detection unit 93AR when the second contact member 9AR is pressed against the reinforcing bar S, and an orientation detection sensor 350 that detects the orientation of the reinforcing bar binding machine 1A.

[0125] The control unit 100A controls the feed motor 31 that drives the feed gear 30 and the twisting motor 80 that drives the twisting unit 7, etc., according to the outputs of the first sensor 312L and the second sensor 312R and the output of the orientation detection sensor 350, to perform a series of operations to bind the reinforcing bars S with the wire W.

[0126] In this example, when the first contact member 9AL is moved to the standby position shown in FIG. 1A etc., the detection unit 93AL is in a position not facing the first sensor 312L. In this state, the output of the first sensor 312L is turned off. In addition, when the first contact member 9AL is moved to the operating position shown in FIG. 1C, the detection unit 93AR is in a position facing the first sensor 312L. In this state, the output of the first sensor 312L is turned on. In a configuration in which the detection unit 93AL passes a position facing the first sensor 312L by moving the first contact member 9AL to the operating position, when the detection unit 93AL moves to a position facing the first sensor 312L, the output of the first sensor 312L is turned on. Furthermore, even if the detection unit 93AL passes a position facing the first sensor 312L, the output of the first sensor 312L is kept on. In a configuration in which the detection unit 93AL is positioned opposite the first sensor 312L when the first contact member 9AL moves to the standby position, and the detection unit 93AL is positioned opposite the first sensor 312L when the first contact member 9AL moves to the operating position, the output of the first sensor 312L is turned off when the detection unit 93AL is positioned opposite the first sensor 312L. Furthermore, when the detection unit 93AL moves to a position opposite the first sensor 312L, the output of the first sensor 312L is turned on.

[0127] In addition, when the second contact member 9AR is moved to the standby position shown in FIG. 1B, the detection unit 93AR is in a position not facing the second sensor 312R. In this state, the output of the second sensor 312R is turned off. In addition, when the second contact member 9AR is moved to the operating position shown in FIG. 1D, the detection unit 93AR is in a position facing the second sensor 312R. In this state, the output of the second sensor 312R is turned on. In a configuration in which the detection unit 93AR passes a position facing the second sensor 312R by moving to the operating position, when the detection unit 93AR moves to a position facing the second sensor 312R, the output of the second sensor 312R is turned on. Furthermore, even if the detection unit 93AR passes a position facing the second sensor 312R, the output of the second sensor 312R is kept on. In a configuration in which the second contact member 9AR moves to the standby position, causing the detection unit 93AR to be in a position facing the second sensor 312R, and the second contact member 9AR moves to the operating position, causing the detection unit 93AR to be in a position not facing the second sensor 312R, the output of the second sensor 312R is turned off when the detection unit 93AR is in a position facing the second sensor 312R. Furthermore, when the detection unit 93AR moves to a position not facing the second sensor 312R, the output of the second sensor 312R is turned on.

[0128] Furthermore, when the orientation of the rebar tying machine 1A is within a specified binding tolerance range with the guide part 5A facing downward, the output of the orientation detection sensor 350 is turned on, and when the orientation of the rebar tying machine 1A is outside the specified binding tolerance range, the output of the orientation detection sensor 350 is turned off.

[0129] 17A is a perspective view showing an orientation detection sensor according to the first embodiment. An orientation detection sensor 350A according to the first embodiment includes an acceleration sensor 351, a switch 352 for switching between detection and non-detection by the acceleration sensor 351, and an operation unit 353 for switching the switch 352 between on and off.

[0130] The orientation detection sensor 350A is provided in the second main body 302. In this example, the orientation detection sensor 350A is provided in the electrical equipment unit 360 shown in Fig. 1A. The electrical equipment unit 360 houses a board on which the control unit 100A, the feed motor 31, and the torsion motor 80 are driven, and on which circuits, components, etc. are mounted.

[0131] The acceleration sensor 351 detects the orientation of the rebar binding machine 1A by detecting acceleration in at least one axial direction. By switching the switch 352 on and off with the operation unit 353, detection by the acceleration sensor 351 can be switched between enabled and disabled.

[0132] 17B is a perspective view showing an orientation detection sensor according to the second embodiment. An orientation detection sensor 350B according to the second embodiment includes a photosensor 354, a pendulum 355 detected by the photosensor 354, and an operation unit 356 that switches between the operation and non-operation of the pendulum 355.

[0133] The orientation detection sensor 350B is provided in the second main body unit 302. In this example, the orientation detection sensor 350B is provided in the electrical component unit 360 shown in FIG.

[0134] The pendulum 355 rotates around the axis 355a as a fulcrum depending on the orientation of the rebar binding machine 1A, and detects the orientation of the rebar binding machine 1A by switching on and off detection by the photosensor 354. By switching on and off the operation of the pendulum 355 with the operation unit 356, it is possible to switch between enabling and disabling detection by the photosensor 354.

[0135] Next, an operation of using the reinforcing bar binding machine 1A to bind the reinforcing bar S with the wire W will be described. The worker holds the handle portions 304hL, 304hL of the reinforcing bar binding machine 1A with both hands, aligns the position of the guide portion 5A with the intersection of the two reinforcing bars S, and inserts the reinforcing bar S into the insertion / removal opening 53.

[0136] The reinforcing bar binding machine 1A is used with the operator standing with the guide part 5A facing downward in order to bind the reinforcing bar S at the operator's feet. When the second guide 52 is moved to the second position, the interval of the insertion / removal opening 53 along the second direction indicated by the arrow A2 is narrower than when the second guide 52 is moved to the first position. For this reason, when inserting the reinforcing bar S, it is difficult to insert the reinforcing bar S into the insertion / removal opening 53 in a conventional binding machine in which the second guide 52 is moved to the second position. Therefore, in the reinforcing bar binding machine 1A, when the reinforcing bar S is not inserted into the insertion / removal opening 53, the second guide 52 is moved to the first position as shown in FIG. 1A, FIG. 1B, etc., and the interval between the end 52c of the second guide 52 and the end 51c of the first guide 51A is widened. Furthermore, the reinforcing bar tying machine 1A is provided at the tip end of the first guide 51A with a guide portion 59 shaped to guide the reinforcing bar S to the insertion / removal opening 53. This allows the worker to place the reinforcing bar S against the guide portion 59 and move the guide portion 59 so as to slide over the reinforcing bar S, making it easier to insert the reinforcing bar S into the insertion / removal opening 53.

[0137] In the operation of inserting the reinforcing bar S into the insertion / removal opening 53 between the first guide 51A and the second guide 52, the reinforcing bar binding machine 1A moves in a first direction indicated by an arrow A1. Due to this relative movement between the reinforcing bar binding machine 1A and the reinforcing bar S, the abutting portion 91AL of the first contact member 9AL is pushed by a force along the first direction indicated by the arrow A1, and the first contact member 9AL moves to an operating position. Also, the abutting portion 91AR of the second contact member 9AR is pushed by a force along the first direction indicated by the arrow A1, and the second contact member 9AR moves to an operating position.

[0138] When the first contact member 9AL moves to the actuated position, the output of the first sensor 312L changes from OFF to ON. Also, when the first contact member 9AL moves to the actuated position, the acting portion 92AL presses the acted portion 97L of the first link member 96L, causing the first link member 96L to rotate about the shaft 96A. The rotation of the first link member 96L about the shaft 96A causes the acting shaft 98A to move in a direction approaching the first guide 51A. As a result, the acting shaft 98A presses the receiving portion 56 of the second guide 52, causing the second guide 52 to move to the second position.

[0139] When the second contact member 9AR moves to the actuated position, the output of the second sensor 312R changes from OFF to ON. When the second contact member 9AR moves to the actuated position, the acting portion 92AR presses the actuated portion 97L of the second link member 96R, causing the second link member 96R to rotate about the shaft 96A. The rotation of the second link member 96R about the shaft 96A causes the acting shaft 98A to move in a direction approaching the first guide 51A. As a result, the acting shaft 98A presses the receiving portion 56 of the second guide 52, causing the second guide 52 to move to the second position.

[0140] Since the link portion 96 is formed by connecting the first link member 96L and the second link member 96R, when either the first contact member 9AL or the second contact member 9AR moves to the operating position, the second guide 52 moves to the second position.

[0141] FIG. 18 is an explanatory diagram showing the binding tolerance range of the reinforcing bar binding machine of the first embodiment, and FIG. 19A is a flowchart showing an example of the operation of the reinforcing bar binding machine of the first embodiment. Next, an example of the operation of binding reinforcing bar S with wire W using the reinforcing bar binding machine 1A will be described.

[0142] In step SA1 of FIG. 19A, the control unit 100A detects whether the orientation of the rebar binding machine 1A is within a predetermined binding tolerance range E1 and whether the orientation detection sensor 350 (350A or 350B) is on.

[0143] When the control unit 100A detects in step SA2 of FIG. 19A that the orientation detection sensor 350 is on and the orientation of the rebar binding machine 1A is within a predetermined binding tolerance range E1, and detects that the first sensor 312L is on because the first contact member 9AL has moved to the operating position, in step SA3, the control unit 100A controls the feed motor 31 and the twisting motor 80 to perform a series of operations to bind the rebar S with the wire W.

[0144] Alternatively, when the control unit 100A detects in step SA2 of FIG. 19A that the second contact member 9AR has moved to the operating position and therefore the second sensor 312R is on, with the orientation detection sensor 350 turned on and the orientation of the rebar binding machine 1A being within a predetermined binding tolerance range E1, the control unit 100A executes a series of operations in step SA3.

[0145] Furthermore, when the control unit 100A detects in step SA2 of FIG. 19A that the first sensor 312L is on because the first contact member 9AL has moved to the operating position, and detects that the second sensor 312R is on because the second contact member 9AR has moved to the operating position, with the orientation detection sensor 350 turned on and the orientation of the rebar binding machine 1A being within a predetermined binding tolerance range E1, the control unit 100A may be configured to execute a series of operations in step SA3.

[0146] Here, depending on the orientation of the two reinforcing bars S, the reinforcing bars S may contact either the first contact member 9AL or the second contact member 9AR but not the other. In such a case, if the bundling operation can be performed when either the first sensor 312L or the second sensor 312R is turned on, the bundling operation can be performed reliably.

[0147] When the control unit 100A detects in step SA4 of FIG. 19A that the first contact member 9AL has moved to the operating position and therefore the first sensor 312L is on, in other words, when the orientation detection sensor 350 is off and the orientation of the rebar binding machine 1A is outside the specified binding tolerance range E2, the control unit 100A notifies in step SA5 that the binding operation cannot be performed by turning on a lamp (not shown), making a sound, etc.

[0148] Alternatively, when the control unit 100A detects in step SA4 of FIG. 19A that the second contact member 9AR has moved to the operating position and therefore the second sensor 312R is on, in other words, when the orientation detection sensor 350 is off and the orientation of the rebar binding machine 1A is outside the specified binding tolerance range E2, the control unit 100A notifies in step SA5 that the binding operation cannot be performed by turning on a lamp (not shown), emitting a sound, etc.

[0149] Furthermore, when the control unit 100A detects in step SA4 of FIG. 19A that the first sensor 312L is on because the first contact member 9AL has moved to the operating position and that the second sensor 312R is on because the second contact member 9AR has moved to the operating position when the orientation detection sensor 350 is not on, i.e., when the orientation detection sensor 350 is off and the orientation of the rebar binding machine 1A is outside the specified binding tolerance range E2, the control unit 100A may be configured to notify in step SA5 that the binding operation cannot be performed by turning on a lamp (not shown) or emitting a sound, for example.

[0150] After the control unit 100A notifies the controller 100A that bundling is impossible, the controller 100A detects that the first sensor 312L is off because the first contact member 9AL has moved to the standby position, detects that the second sensor 312R is off because the second contact member 9AR has moved to the standby position, and returns to step SA1 when the power switch 110 is operated to turn the power off and on. Then, when the controller 100A detects that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R, are on because the first contact member 9AL or the second contact member 9AR has moved to the operating position while the orientation detection sensor 350 is on and the orientation of the rebar binding machine 1A is within the predetermined bundling tolerance range E1, the controller 100A executes the bundling operation.

[0151] Alternatively, after the notification that bundling is impossible, the control unit 100A returns to step SA1 when it detects that the first sensor 312L is off because the first contact member 9AL has moved to the standby position and detects that the second sensor 312R is off because the second contact member 9AR has moved to the standby position. Then, when the orientation detection sensor 350 turns on and the orientation of the rebar binding machine 1A is within a predetermined bundling tolerance range E1, the control unit 100A executes the bundling operation when it detects that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R, are on because either or both of the first contact member 9AL and the second contact member 9AR have moved to the operating position.

[0152] Alternatively, the control unit 100A returns to step SA1 after notifying that bundling is not possible. Then, when the orientation detection sensor 350 is turned on and the orientation of the rebar binding machine 1A is within a predetermined bundling tolerance range E1, and either or both of the first contact member 9AL and the second contact member 9AR are moved to the operating position, the control unit 100A detects that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R, are on, the bundling operation is performed.

[0153] FIG. 19B is a flowchart showing another example of the operation of the reinforcing bar binding machine of the first embodiment. Next, another example of the operation of binding the reinforcing bar S with the wire W by the reinforcing bar binding machine 1A will be described.

[0154] In step SB1 of FIG. 19B, the control unit 100A detects that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R, are on due to either or both of the first contact member 9AL and the second contact member 9AR moving to the operating position, and then in step SB2 of FIG. 19B, it detects whether the orientation of the rebar binding machine 1A is within a predetermined binding tolerance range E1 and whether the orientation detection sensor 350 is on.

[0155] When the control unit 100A detects that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R, are on, and detects that the orientation detection sensor 350 is on because the orientation of the rebar binding machine 1A is within a predetermined binding tolerance range E1, in step SB3, the control unit 100A controls the feed motor 31 and the twisting motor 80 to perform a series of operations to bind the rebar S with the wire W.

[0156] When the control unit 100A detects that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R, are on, but detects that the orientation detection sensor 350 is not on, that is, that the orientation of the rebar binding machine 1A is outside the specified binding tolerance range E2 and the orientation detection sensor 350 is off, in step SB4, it notifies that the binding operation cannot be performed by turning on a lamp (not shown), emitting a sound, etc.

[0157] After the control unit 100A receives the notification that bundling is impossible, the control unit 100A detects that the first sensor 312L and the second sensor 312R are off because the first contact member 9AL and the second contact member 9AR have moved to the standby position, and when the power switch 110 is operated to turn the power off and on, the control unit 100A returns to step SB1. Then, when the control unit 100A detects that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R, are on, the orientation of the rebar binding machine 1A is within a predetermined bundling tolerance range E1, and the orientation detection sensor 350 is on, the control unit 100A executes the bundling operation.

[0158] Alternatively, when the control unit 100A detects that the first sensor 312L and the second sensor 312R are OFF because the first contact member 9AL and the second contact member 9AR have moved to the standby position after the notification that bundling is impossible, the control unit 100A returns to step SB1. Then, when the control unit 100A detects that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R, are ON, the orientation of the rebar binding machine 1A is within a predetermined bundling tolerance range E1, and the orientation detection sensor 350 is ON, the control unit 100A executes the bundling operation.

[0159] Alternatively, the control unit 100A returns to step SB1 after notifying that bundling is impossible. Then, when it detects that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R, are on, the orientation of the rebar binding machine 1A is within a predetermined bundling allowable range E1, and the orientation detection sensor 350 is on, it executes the bundling operation.

[0160] In addition, when the control unit 100A detects that the orientation of the rebar tying machine 1A is outside the specified binding tolerance range E2 and the orientation detection sensor 350 is off, the control unit 100A may be configured to detect that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R, are on by moving either or both of the first contact member 9AL and the second contact member 9AR to the operating position, and to perform various settings of the rebar tying machine 1A by combining the first sensor 312L and the second sensor 312R being on and off.

[0161] Also, the control unit 100A may not execute the bundling operation when the detection of the orientation detection sensor 350 (350A, 350B) is disabled, and may enable the setting of the rebar binding machine 1A by a combination of on and off of the first sensor 312L and the second sensor 312R by the operation of the first contact member 9AL and the second contact member 9AR. Furthermore, when the detection of the orientation detection sensor 350 (350A, 350B) is enabled and the orientation cannot be detected from the output of the orientation detection sensor 350 (350A, 350B), the control unit 100A may determine that a failure has occurred in the orientation detection sensor 350 (350A, 350B) and may notify the same.

[0162] The bundling allowable range may be switched. For example, the rebar binding machine 1A is provided with an operation unit 111 such as a dial that can adjust the binding force, and the bundling allowable range may be switched using this operation unit 111. The bundling allowable range may be switched by a combination of turning on and off the first sensor 312L and the second sensor 312R by the operation of the first contact member 9AL and the second contact member 9AR, turning on and off the power by operating the power switch 110, etc. Furthermore, the bundling allowable range may be switched by a combination of turning on and off the first sensor 312L and the second sensor 312R by the operation of the operation unit 111, turning on and off the first sensor 312L and the second sensor 312R by the operation of the first contact member 9AL and the second contact member 9AR, turning on and off the power by operating the power switch 110, etc. This allows the bundling allowable range to be set according to the work environment and work site. For example, it can be set to tie rebars S (objects to be tied) that are not only downward but also horizontally or upward with respect to the worker (user). By setting the binding tolerance range to suit the work environment and work site, it is possible to prevent the worker (user) from tying rebars unintentionally or tying rebars S (objects to be tied) at undesirable angles.

[0163] To explain an example of a series of operations for binding reinforcing bars S with wire W, feed motor 31 rotates in the forward direction, and feed gear 30 rotates in the forward direction, whereby wire W is fed in the forward direction indicated by arrow F. Wire W fed in the forward direction by feed unit 3 passes through fixed blade unit 60, which is a first regulating member constituting regulating unit 4, and regulating member 42, which is a second regulating member. Wire W that has passed through regulating member 42 comes into contact with guide surface 51g of first guide 51A, and is guided to regulating member 43, which is a third regulating member.

[0164] As a result, the wire W fed in the forward direction by the feed unit 3 comes into contact with the fixed blade unit 60, the restricting member 42, the restricting member 43, and the guide surface 51g of the first guide 51A, thereby being bent into an arc shape. Then, the wire W fed in the forward direction by the feed unit 3 comes into contact with the fixed blade unit 60 and the restricting member 43 from the outer periphery of the arc shape, and comes into contact with the restricting member 42 between the fixed blade unit 60 and the restricting member 43 from the inner periphery of the arc shape, thereby giving the wire W a curling tendency that draws a substantial circle.

[0165] When the second guide 52 is moved to the second position, a predetermined distance is provided between the end 51c of the first guide 51A and the end 52c of the second guide 52. However, when the second guide 52 is moved to the second position, the pair of side guides 52a are located on the feed path Wf of the wire W, and the wire W fed in the forward direction by the feed unit 3 is curled by the regulating unit 4 as described above, and is guided between the pair of side guides 52a of the second guide 52.

[0166] The wire W guided between the pair of side guides 52a of the second guide 52 is fed in the forward direction by the feed unit 3, and is guided by the pair of side guides 52a of the second guide 52 to the engagement unit 70 of the twisting unit 7. Then, when the control unit 100A determines that the tip of the wire W has been fed to a predetermined position, it stops driving the feed motor 31. As a result, the wire W is wound spirally around the reinforcing bar S.

[0167] After stopping the forward feeding of the wire W, the control unit 100A rotates the twisting motor 80 in the forward direction. By rotating the twisting motor 80 in the forward direction, the operating unit 71 operates the engaging unit 70, and the distal end side of the wire W is held by the engaging unit 70.

[0168] When the control unit 100A determines that the twisting motor 80 has been rotated until the engaging unit 70 holds the wire W, it stops the rotation of the twisting motor 80 and rotates the feed motor 31 in the reverse direction. When the twisting motor 80 is rotated until the engaging unit 70 holds the wire W, the movement of the moving member 83 is transmitted to the regulating member 42 by the transmission mechanism 44, and the regulating member 42 moves to a position where it does not contact the wire.

[0169] When the feed motor 31 rotates in the reverse direction, the feed gear 30 rotates in the reverse direction, and the wire W is fed in the reverse direction indicated by the arrow R. By feeding the wire W in the reverse direction, the wire W is wound around the reinforcing bar S in close contact with the reinforcing bar S.

[0170] When the control unit 100A determines that the feed motor 31 has been rotated in the reverse direction until the wire W is wound around the reinforcing bar S, it stops the rotation of the feed motor 31 and then rotates the twisting motor 80 in the forward direction. By rotating the twisting motor 80 in the forward direction, the movable blade unit 61 is actuated by the moving member 83 via the transmission mechanism 62, and the wire W is cut.

[0171] 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.

[0172] When the control unit 100A determines that the twisting motor 80 has been rotated in the forward direction until the wire W is twisted, it rotates the twisting motor 80 in the reverse direction. By rotating the twisting motor 80 in the reverse direction, the engagement unit 70 is returned to its initial position and the wire W is released from its hold. This makes it possible to remove the wire W that has bound the rebar S from the engagement unit 70.

[0173] When the control unit 100A determines that the torsion motor 80 has been rotated in the reverse direction until the engagement unit 70 and the like have returned to their initial positions, it stops the rotation of the torsion motor 80.

[0174] The worker moves the reinforcing bar binding machine 1A in the direction to remove the reinforcing bar S tied with the wire W from the insertion / removal opening 53. When the force pressing the abutment portion 91AL of the first contact member 9AL is no longer applied by the action of moving the reinforcing bar binding machine 1A in the direction to remove the reinforcing bar S from the insertion / removal opening 53, the force of the spring 95AL moves the first contact member 9AL to the standby position. When the force pressing the abutment portion 91AR of the second contact member 9AR is no longer applied, the force of the spring 95AR moves the second contact member 9AR to the standby position. Furthermore, the force of the biasing member 54 moves the second guide 52 from the second position to the first position.

[0175] When the worker moves the rebar binding machine 1A in the direction to remove the rebar S bound with the wire W from the insertion / removal opening 53, the second guide 52 moves to the first position, and the distance between the end 52c of the second guide 52 and the end 51c of the first guide 51B increases. This makes it easier to remove the rebar S from the insertion / removal opening 53 and to move to the next binding location.

[0176] <Examples of the functions and effects of the reinforcing bar binding machine according to the first embodiment> In the reinforcing bar binding machine 1A, the first sensor 312L detects that the first contact member 9AL has moved to the operating position, and the second sensor 312R detects that the second contact member 9AR has moved to the operating position, and then the binding operation is performed. Furthermore, the execution of the binding operation can be switched on or off depending on the orientation of the reinforcing bar binding machine 1A. This simplifies the operation and suppresses the occurrence of malfunctions in a configuration that does not include an operating unit on the handle parts 304hL and 304hR. Note that the binding operation may be performed when either the first sensor 312L or the second sensor 312R is turned on, regardless of the orientation of the reinforcing bar binding machine 1A.

[0177] In a configuration in which the first contact portion 13L and the second contact portion 13R are attached to the second main body portion 302 and the first contact member 9AL and the second contact member 9AR are movably supported by the second main body portion 302, the tolerance between the attachment positions of the first contact portion 13L and the second contact portion 13R and the attachment positions of the first contact member 9AL and the second contact member 9AR may be large. In such a case, the first contact member 9AL or the second contact member 9AR may not be able to move to the operating position when the reinforcing bar S is abutted against the first contact portion 13L or the second contact portion 13R. If the first contact member 9AL and the second contact member 9AR cannot move to the operating position, the bundling operation cannot be performed.

[0178] Therefore, in the reinforcing bar binding machine 1A, the first contact member 9AL and the second contact member 9AR are movably supported by the cover guide portion 11 having the first abutment portion 13L and the second abutment portion 13R. As a result, the movement amount of the first contact member 9AL and the second contact member 9AR is determined by the cover guide portion 11, so that the movement amount of the first contact member 9AL and the second contact member 9AR that are abutted against the reinforcing bar S and move until the reinforcing bar S is at a position where it abuts against the first abutment portion 13L or the second abutment portion 13R can be set to a predetermined range. Therefore, the first contact member 9AL and the second contact member 9AR can be reliably moved to the operating position.

[0179] In addition, since the cover guide portion 11 has a first side wall portion 11L to which the first contact member 9AL is attached and a second side wall portion 11R to which the second contact member 9AR is attached, which are integrally formed by the connection portion 11U, the positional accuracy between the first contact member 9AL and the second contact member 9AR can be improved.

[0180] Furthermore, the cover guide part 11 is shaped to cover a part or all of the front end part of the second main body part 302, parts of both the left and right sides of the front part of the second main body part 302, and the top surface of the second main body part 302 between the base end side of the first guide 51A and the base end side of the second guide 52. While the second main body part 302 is made of resin, the cover guide part 11 is made of metal, so that wear and damage to the second main body part 302 can be reduced even if the reinforcing bar S comes into contact with it.

[0181] The first guide recess 14L1, the second guide recess 14L2, and the third guide recess 14L3 that guide the movement of the first contact member 9AL, and the spring 95AL that biases the first contact member 9AL are arranged on the same axis Bx along the movement direction of the first contact member 9AL. This makes it possible to suppress the first contact member 9AL from tilting when a force is applied to tilt the first contact member 9AL with respect to the movement direction of the first contact member 9AL, and to reliably operate the first contact member 9AL. In particular, the first contact member 9AL that has moved to the operating position can be reliably moved to the standby position by the spring 95AL. The same applies to the second contact member 9AR.

[0182] In addition, when the first cover portion 12L is attached to the first side wall portion 11L of the cover guide portion 11, the first guide recess 14L1, the second guide recess 14L2, the third guide recess 14L3, and the spring 95AL are covered by the first cover portion 12L. Since the third guide recess 14L3 is configured as an uneven shape rather than an opening, no large opening is provided on the side of the first cover portion 12L. This prevents dust, dirt, etc. from entering the mechanism that guides the movement of the first contact member 9AL, and allows the first contact member 9AL to operate reliably.

[0183] In addition, when the second cover portion 12R is attached to the second side wall portion 11R of the cover guide portion 11, the first guide recess 14R1, the second guide recess 14R2, the third guide recess 14R3, and the spring 95AR are covered by the second cover portion 12R. Since the third guide recess 14R3 is configured as an uneven shape rather than an opening, no large opening is provided on the side of the second cover portion 12R. This prevents dust, dirt, etc. from entering the mechanism that guides the movement of the second contact member 9AR, and allows the second contact member 9AR to operate reliably.

[0184] The first cover portion 12L can be removed from the first side wall portion 11L by removing the screws 16Lb and 16Lc. By removing the first cover portion 12L, the first contact member 9AL is exposed, and the first contact member 9AL can be attached to and detached from the first side wall portion 11L.

[0185] The second cover portion 12R can be removed from the second side wall portion 11R by removing the screws 16Rb and 16Rc. By removing the second cover portion 12R, the second contact member 9AR is exposed, and the second contact member 9AR can be attached to and detached from the second side wall portion 11R.

[0186] The first cover portion 12L and the second cover portion 12R are independent parts, and when removing the first cover portion 12L, it is not necessary to remove the second cover portion 12R. Moreover, when removing the second cover portion 12R, it is not necessary to remove the first cover portion 12L. Moreover, when attaching or detaching the first contact member 9AL and the second contact member 9AR, it is not necessary to disassemble the second main body portion 302.

[0187] Furthermore, the cover guide portion 11 can be removed from the second main body portion 302 without removing the link portion 96 from the cover guide portion 11 by removing either the first cover portion 12L or the second cover portion 12R, pulling out the positioning pin 16p, and removing the screw 16Ra. By removing the cover guide portion 11 from the second main body portion 302, the sensor board unit 311 mounted on the sensor attachment portion 310 is exposed as shown in Fig. 12. This allows maintenance and inspection of the sensor board unit 311.

[0188] The link portion 96 is attached to the cover guide portion 11 via the shaft 96A. This prevents the tolerance between the attachment position of the link portion 96 and the attachment positions of the first contact member 9AL and the second contact member 9AR from becoming large. On the other hand, the second guide 52 is attached to the second main body portion 302. Therefore, it is easily affected by the tolerance between the link portion 96 and the second guide 52. Therefore, in the connecting portion 98, the opening 98B into which the action shaft 98A is inserted is made larger than the action shaft 98A, so that the amount of rotation of the link portion 96 with the shaft 96A as a fulcrum is increased relative to the amount of rotation of the second guide 52. This allows the first contact member 9AL and the second contact member 9AR to be reliably moved to the operating position and can be detected by the first sensor 312L and the second sensor 312R.

[0189] In addition, the position of the axis of rotation is different between the second guide 52 and the link portion 96. Therefore, by allowing the action axis 98A to move along the receiving portion 56, the amount of rotation of the second guide 52 relative to the amount of movement of the first contact member 9AL and the second contact member 9AR can be made appropriate.

[0190] The first contact member 9AL and the second contact member 9AR are independent parts and can be operated independently. In addition, the first sensor 312L for detecting the first contact member 9AL and the second sensor 312R for detecting the second contact member 9AR are also independent, and the movements of the first contact member 9AL and the second contact member 9AR can be detected independently. This allows various settings of the rebar binding machine 1A to be made possible by combining the operations of the first contact member 9AL and the second contact member 9AR. For example, when the detection of the orientation detection sensor 350 (350A, 350B) is disabled, the control unit 100A does not perform the binding operation, and allows the setting of the rebar binding machine 1A to be made possible by combining the operations of the first contact member 9AL and the second contact member 9AR.

[0191] 20 is a perspective view showing an example of the effect of the sensor board unit. In the sensor board unit 311, the first sensor 312L and the second sensor 312R are mounted on the same board 313. The board 313 is accommodated in the first opening 315 of the case 314, and the first opening 315 is sealed with resin. The case 314 is provided with a second opening 316 adjacent to the first opening 315, and the first opening 315 and the second opening 316 are connected by a groove 317. As a result, when the first opening 315 is sealed with resin, the excess of the resin flows through the groove 317 into the second opening 316, and the first opening 315 is sealed with an appropriate amount of resin.

[0192] <Modification of rebar binding machine> 21 is a perspective view showing an example of a reinforcing bar binding machine of the second embodiment. In the reinforcing bar binding machine 1B of the second embodiment, a guide section 5B having a first guide 51B and a second guide 52B is provided on one side of the main body section 10. The reinforcing bar binding machine 1B is provided in a form in which a handle section 10h protrudes from the other side of the main body section 10, and a trigger 10t that receives an operation to operate the reinforcing bar binding machine 1B is provided on the front side of the handle section 10h.

[0193] The reinforcing bar binding machine 1B includes the above-mentioned first contact member 9AL, second contact member 9AR, and a cover guide part 11 to which the first contact member 9AL and the second contact member 9AR are movably attached. The reinforcing bar binding machine 1B also includes a first cover part 12L and a second cover part 12R attached to the cover guide part 11.

[0194] The configuration of the first contact member 9AL, the second contact member 9AR, and the cover guide portion 11 may be similar to that of the rebar binding machine 1A of the first embodiment, except that it does not have a mechanism for operating the second guide 52B.

[0195] In the reinforcing bar binding machine 1B, the second guide 52B is biased by a spring (not shown) to the second position, and is configured to be able to retreat to the first position when an external force is applied.

[0196] 22 is a perspective view showing an example of a reinforcing bar binding machine according to the third embodiment. The reinforcing bar binding machine 1C of the third embodiment has a configuration in which the second main body 302 of the reinforcing bar binding machine 1A of the first embodiment is attached to a robot arm 370. [Explanation of symbols]

[0197] DESCRIPTION OF THE REFERENCE NUMERALS 1A, 1B, 1C... rebar tying machine, 301... first main body portion, 302... second main body portion, 302L... side portion, 302R... side portion, 302U... upper surface portion, 303... connecting portion, 10... main body portion, 10h... handle portion, 10t... trigger, 2... storage portion, 3... feed portion, 4... restricting portion, 5A, 5B... guide portion, 51A, 51B... first guide, 52, 52B... second guide, 53... insertion / removal port, 54... biasing member , 56 ··· receiving portion, 6 ··· cutting portion, 7 ··· twisting portion, 8 ··· driving portion, 9AL··· first contact member (moving portion), 9AR··· second contact member (moving portion), 90AL, 90AR·· guided portion, 91AL, 91AR·· abutting portion, 92AL, 92AR·· action portion, 93AL, 93AR·· detection portion, 94AL1, 94AR1·· first guide protrusion portion, 94AL2, 94AR2·· second guide protrusion portion, 94AL3, 94AR3·· second 3 guide protrusion, 94AL4, 94AR4... spring mounting portion, 95AL, 95AR... spring, 96... link portion (guide moving portion), 96A... shaft, 96L, 96R... link member, 97L, 97R... acted portion, 98A... acting shaft, 98B... opening, 98C... spring, 11... cover guide portion, 11L... first side wall portion, 11R... second side wall portion, 11U... connection portion, 12L... first cover portion (cover portion), 12R... Second cover portion (cover portion), 13L...first contact portion, 13R...second contact portion, 14L1, 14R1...first guide recess, 14L2, 14R2...second guide recess, 14L3, 14R3...third guide recess, 15L1, 15R1...spring support portion, 100A...control portion, 110...power switch, 111...operation portion, 312L...first sensor, 312R...second sensor, 350...orientation detection sensor, W...wire

Claims

[Claim 1] A main body portion, A cover guide portion provided on the main body portion and having a contact portion against which an object to be bound is abutted; a moving part that is movably supported by the cover guide part and that moves when abutted against the object to be bound; a first guide and a second guide extending in a first direction from one end of the main body and arranged in a second direction perpendicular to the first direction with a space therebetween for receiving the object to be bound, the first guide and the second guide guiding a wire for binding the object to be bound; a guide moving unit having an action shaft in contact with the second guide and an opening for supporting the action shaft, the guide moving unit changing the interval from a first distance to a second distance shorter than the first distance; Equipped with the second guide is movable toward and away from the first guide, The moving unit has an action unit that activates the guide moving unit, and is capable of moving the second guide to a position at which the second distance is reached and moving to an operating position where a bundling operation is performed, The opening has a length along the movement direction of the guide movement part that is greater than the action shaft, The amount of movement of the guide moving portion is greater than the amount of movement of the second guide. Binding machine.

Images