JP7516735B2 - Binding machine - Google Patents

Description

This disclosure relates to a bundling machine that uses wire to bundle objects such as reinforcing bars.

A binding machine known as a rebar binding machine has been proposed in which a wire fed from a wire feed 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).

The rebar tying machine described in Patent Document 1 has a contact member that can move forward and backward to engage with the rebar when tying, and is equipped with a switch that engages when the contact member moves backward to enable operation of the tying machine.

Patent No. 2949703

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 does not take into consideration a configuration that secures the amount of movement of the contact member.

The present disclosure has been made to solve these problems, and aims to provide a binding machine that ensures the amount of movement of the moving part (contact member) that moves when it comes into contact with the object to be bound.

In order to solve the above-mentioned problems, the binding machine of the present disclosure comprises a main body, a cover guide attached to the main body, a moving part that moves when it is abutted against the object to be bound, and a sensor that detects that the moving part has moved to an operating position where it performs the operation of binding the object to be bound, and the cover guide part comprises a guide part that movably guides the moving part, and a contact part against which the binding object that moved the moving part is abutted when the moving part moves when it is abutted against the object to be bound, and the guide part is provided with a guide recess that extends along the movement direction of the moving part, and the moving part is provided with a guide convex part that fits into the guide recess provided in the guide part, and the guide concave part and the guide convex part determine the amount of movement of the moving part until the object to be bound is in a position where it abuts against the abutment part.

In this binding machine, when the moving part abuts against the object to be bound and moves to a specified position, the operation of binding the object to be bound is performed.

In the binding machine according to the present disclosure, the amount of movement of the moving part is determined by the cover guide part provided with the abutment part, so that the amount of movement of the moving part that moves in contact with the binding object until the binding object reaches a position where it abuts against the abutment part can be within a predefined range.

1 is a side view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment; 1 is a side view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment; 1 is a side view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment; 1 is a side view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment; 1 is a top view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment; 1 is a front view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment; 1 is a rear view showing an example of the overall configuration of a reinforcing bar binding machine according to a first embodiment; FIG. 1 is a side view showing an example of an internal configuration of a reinforcing bar binding machine according to a first embodiment; FIG. 2 is a side view showing a main part of the internal configuration of the reinforcing bar binding machine of the first embodiment. FIG. 2 is a side view showing a main part of the internal configuration of the reinforcing bar binding machine of the first embodiment. 1 is a side view showing a main configuration of a reinforcing bar binding machine according to a first embodiment. FIG. 1 is a side view showing a main configuration of a reinforcing bar binding machine according to a first embodiment. FIG. FIG. 2 is a perspective view showing a main configuration of the reinforcing bar binding machine of the first embodiment. 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment. FIG. 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment. FIG. 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment. FIG. 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment. FIG. 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment. FIG. 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment. FIG. 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment. FIG. 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment. FIG. 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment. FIG. 1 is an explanatory diagram showing the main configuration and operation and effect of the reinforcing bar binding machine of the first embodiment. FIG. FIG. 2 is a functional block diagram of the reinforcing bar binding machine according to the first embodiment. FIG. 2 is a perspective view showing an orientation detection sensor according to the first embodiment; FIG. 11 is a perspective view showing an orientation detection sensor according to a second embodiment. FIG. 2 is an explanatory diagram showing a binding tolerance range of the reinforcing bar binding machine of the first embodiment; 4 is a flowchart showing an example of the operation of the reinforcing bar binding machine of the first embodiment. 10 is a flowchart showing another example of the operation of the reinforcing bar binding machine of the first embodiment. 11 is a perspective view showing an example of the function and effect of the sensor board unit; FIG. FIG. 11 is a perspective view showing an example of a reinforcing bar binding machine according to a second embodiment. FIG. 11 is a perspective view showing an example of a reinforcing bar binding machine according to a third embodiment.

Below, an example of a rebar binding machine as an embodiment of the binding machine of the present invention will be described with reference to the drawings.

<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.

The reinforcing bar tying 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 tying 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, 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 tying machine 1A on and off, and an operating portion 111 having a dial or the like for adjusting the tying force.

The second main body 302 is an example of a main body, and its exterior is made of resin. The second main body 302 includes a storage section 2 that rotatably stores a wire reel 20 around which a wire W is wound, and a feed section 3 that feeds the wire W wound around the wire reel 20 stored in the storage section 2. The second main body 302 also includes a regulating section 4 that imparts a curl to the wire W fed by the feed section 3, and a guide section 5 that guides the wire W that has been imparted with a curl by the regulating section 4. The second main body 302 also includes a cutting section 6 that cuts the wire W, a twisting section 7 that twists the wire W, and a drive section 8 that drives the cutting section 6, twisting section 7, etc.

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

The storage section 2 is configured to be able to attach, detach, and support the wire reel 20. The feed section 3 has a pair of feed gears 30 as a feed member. The feed section 3 feeds the wire W by rotating the feed gears 30 with a motor (not shown) while the wire W is clamped between the pair of feed gears 30. The feed section 3 can feed the wire W in both the forward direction indicated by the arrow F and the reverse direction indicated by the arrow R, depending on the rotation direction of the feed gears 30.

The cutting unit 6 is provided downstream of the feed unit 3 with respect to the forward feed 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.

The fixed blade unit 60 has an opening 60a through which the wire W passes. The movable blade unit 61 cuts the wire W passing through the opening 60a of the fixed blade unit 60 by rotating around the fixed blade unit 60 as a fulcrum.

The restricting unit 4 includes first to third restricting members that contact the wire W at multiple locations along the feed direction of the wire W fed by the feed unit 3 (at least three locations in this example), thereby forming a curl in the wire W that follows the feed path Wf of the wire W as shown by the dashed line in FIG. 5B.

The first regulating member of the regulating unit 4 is the fixed blade unit 60 described above. In addition, the regulating unit 4 is provided with 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 each formed of a cylindrical member, and the wire W comes into contact with its outer circumferential surface.

The regulating unit 4 has the fixed blade 60, regulating member 42, and regulating member 43 arranged on a curve in accordance with the feed path Wf of the wire W, which is a roughly circular spiral. The fixed blade 60 has an opening 60a through which the wire W passes that is provided on the feed path Wf of the wire W. The regulating member 42 is provided radially inward with respect to the feed path Wf of the wire W. The regulating member 43 is provided radially outward with respect to the feed path Wf of the wire W.

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 in contact with them, so that the wire W is curled along the feed path Wf of the wire W.

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 wire W is fed in the forward direction by the feed unit 3 to give the wire W a curl, and to a position where it does not come into contact with the wire W when the wire W is fed in the reverse direction to wind the wire W around the reinforcing bar S.

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 restricting section 4 and the first guide 51A to the twisting section 7, and a third guide 55 that restricts the radial position of the wire W with respect to the feed path Wf.

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. As shown in Figures 5A and 5B, the first guide 51A has a groove 51h having a guide surface 51g against which the wire W fed by the feed unit 3 slides.

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

The first guide 51A has a restricting member 42 provided on the base end side and a restricting member 43 provided on the tip end side. The first guide 51A has a gap between the guide surface 51g and the outer peripheral surface of the restricting member 42 through which the wire W can pass. In addition, the first guide 51A has a part of the outer peripheral surface of the restricting member 43 protruding onto the guide surface 51g.

The second guide 52 is attached to the front end of the second main body 302. The second guide 52 is provided opposite 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.

The second guide 52 has a pair of side guides 52a that face each other along a third direction indicated by 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 spacing between the pair of side guides 52a narrows from the tip end side to the base end side. The base ends of the pair of side guides 52a face each other at a spacing that allows the wire W to pass through.

The second guide 52 is attached to the second body 302 with its base end supported by the shaft 52b via the third guide 55 attached to the second body 302 by a screw or the like. The axis of the shaft 52b is along the third direction. The second guide 52 can rotate relative to the second body 302 with the shaft 52b as a fulcrum. The tip end 52c of the second guide 52 can move toward and away from the end 51c of the first guide 51A facing the second guide 52 in the second direction indicated by the arrow A2. The end P2 of the groove 51h is exposed at the end 51c of the first guide 51A.

The second guide 52, in conjunction with a pair of contact members described later, moves about the axis 52b to move between a first position, as shown in FIG. 5A, where 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, and a second position, as shown in FIG. 5B, where 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.

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 gap 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.

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.

The second guide 52 is biased in the direction of moving to the first position by a biasing member 54 such as a torsion coil spring, and is maintained in the first position.

The second guide 52 has a receiving portion 56 that receives the action of a pair of contact members (described later) via a link portion. The receiving portion 56 is configured with a surface perpendicular to the bottom surface of the second guide 52, or a surface inclined with respect to a direction perpendicular to the bottom surface of the second guide 52. The receiving portion 56 is configured, for example, by providing a surface on the bottom surface of the second guide 52 that protrudes along the direction of rotation 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 bottom surface of the second guide 52, such that the distance from the shaft 52b to the surface of the receiving portion 56 becomes longer as it approaches the second guide 52.

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

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 a groove portion 51h having the above-mentioned guide surface 51g and a 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 of the cover portion 57A that covers one side of the guide arm 51d and the upper end 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. The first guide 51A may also be configured such that the guide arm 51d and the cover portion 57A are integrated, and the protrusion 57 may be configured to be integral with the first guide 51A in which the guide arm 51d and the cover portion 57A are integrated. The protrusion 57 may also 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 in which the guide arm 51d and the cover portion 57A are integrated.

The twisting unit 7 includes an engagement unit 70 with which the wire W engages, and an actuation unit 71 that actuates the engagement unit 70. The engagement unit 70 forms a first passage through which the wire W sent to the cutting unit 6 by the feed unit 3 passes, and a second passage through which the wire W that has been given a curl by the regulating unit 4 and guided to the twisting unit 7 by the guide unit 5 passes. The engagement unit 70 rotates with the action of the actuation unit 71, thereby twisting the wire W wound around the reinforcing bar S.

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 drive unit 8 are arranged such that the rotating shaft 82 and the rotation centers of the operating unit 71 and engaging unit 70 are coaxially arranged. The rotating shaft 82 and the rotation centers of the operating unit 71 and engaging unit 70 are referred to as the axis Ax. In this example, the first direction indicated by the arrow A1 is the direction along the axis Ax.

The drive unit 8 moves the operating unit 71 along the axial direction of the rotating shaft 82 by rotating the rotating shaft 82. As the operating unit 71 moves along the axial direction of the rotating shaft 82, the engagement unit 70 holds the tip end of the wire W that has been guided to the twisting unit 7 by the guide unit 5.

In the drive unit 8, the moving member 83 moves along the axial direction of the rotating shaft 82 in conjunction with the movement of the operating unit 71 along the axial direction of the rotating shaft 82, so that the movement of the moving member 83 is transmitted to the restricting member 42 by the transmission mechanism 44, and the restricting 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 rotating 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.

The drive unit 8 rotates the actuating unit 71, which has been moved along the axial direction of the rotating shaft 82, by the rotational movement of the rotating shaft 82. By rotating around the axis of the rotating shaft 82, the actuating unit 71 twists the wire W at the engagement unit 70.

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.

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 the insertion/removal port 53 between the first guide 51A and the 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.

The first contact member 9AL is an example of a moving part, and is provided on one side of the second main body 302, and includes an abutment part 91AL that abuts against the rebar S, and an action part 92AL that activates the link part 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 302, and includes an abutment part 91AR that abuts against the rebar S, and an action part 92AR that activates the link part 96.

The first contact member 9AL is movable along a first direction indicated by an 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.

The second contact member 9AR is provided so as to be movable along a first direction indicated by an 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.

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 an axis 96A, which is a moving fulcrum.

The link portion 96 has an acted upon portion 97L that is connected to the first contact member 9AL on one side of the first link member 96L relative to the shaft 96A. The acted upon portion 97L is composed of a member that protrudes laterally from the first link member 96L and contacts the acting portion 92AL of the first contact member 9AL.

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 relative to the shaft 96A. The acted upon portion 97R is formed of a member that protrudes laterally from the second link member 96R and contacts the acting portion 92AR of the second contact member 9AR.

The link portion 96 further includes a connecting portion 98 on the other side of the shaft 96A that connects the first link member 96L and the second link member 96R. 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.

The action shaft 98A is cylindrical in shape and has a length that connects the first link member 96L and the second link member 96R.

The opening 98B is provided in each of the first link member 96L and the second link member 96R. The opening 98B is configured so that the circumferential length along the rotation direction of the link part 96 with the axis 96A as the fulcrum 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 or tangential direction along the rotation direction of the link part 96 with the axis 96A as the fulcrum, and in the radial direction perpendicular thereto.

The spring 98C is composed of a leaf spring and biases the action shaft 98A toward the receiving portion 56 of the second guide 52.

Figures 8 to 15A and 15B are explanatory diagrams showing the main configuration and effects of the rebar binding machine of the first embodiment. Next, the details of the configuration for attaching the contact member and link part will be explained.

The reinforcing bar tying machine 1A covers a specific portion of 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 tying machine 1A also includes a first cover portion 12L and a second cover portion 12R that are attached to the cover guide portion 11.

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.

As shown in FIG. 11, the cover guide portion 11 is configured such that the first side wall portion 11L, the second side wall portion 11R, and the connection portion 11U 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 along the third direction indicated by the arrow A3.

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

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.

The cover guide portion 11 has a first abutment portion 13L at the front end of the first side wall portion 11L. The cover guide portion 11 also has a second abutment portion 13R at the front end of the second side wall portion 11R.

The first abutment portion 13L is configured by bending the front end portion of the first side wall portion 11L 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 abutment portion 13R is configured by bending the front end portion of the second side wall portion 11R 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.

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 composed of elongated openings that extend along the movement direction of the first contact member 9AL, which is the first direction indicated by the arrow A1.

The first cover portion 12L has a third guide recess 14L3. The third guide recess 14L3 is an example of a guide portion and is configured as a long hole-shaped recess that extends along the movement direction of the first contact member 9AL.

The cover guide portion 11 has 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, fits, with the direction in which the spring 95AL expands and contracts being aligned with the direction of movement of the first contact member 9AL.

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.

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, and 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.

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 composed of elongated hole-shaped openings that extend along the movement direction of the second contact member 9AR.

The second cover portion 12R has a third guide recess 14R3. The third guide recess 14R3 is an example of a guide portion and is configured as a long hole-shaped recess that extends along the movement direction of the second contact member 9AR.

The cover guide portion 11 has 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 configured as a compression coil spring, fits, with the direction in which the spring 95AR expands and contracts being aligned with the direction of movement of the second contact member 9AR.

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.

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.

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

The first contact member 9AL has a guided portion 90AL made of a plate-shaped 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.

The first contact member 9AL has a first guide protrusion 94AL1 and a second guide protrusion 94AL2 on one side of the guided portion 90AL facing the first side wall portion 11L of the cover guide portion 11.

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

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 movement direction of the first contact member 9AL and enters the third guide recess 14L3 of the first cover portion 12L.

The first contact member 9AL further includes 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 direction in which the first contact member 9AL moves.

The first contact member 9AL is arranged such that the first guide protrusion 94AL1, the second guide protrusion 94AL2, the third guide protrusion 94AL3, the spring mounting portion 94AL4, and the spring 95AL attached to the spring mounting portion 94AL4 are aligned in a straight line along the direction of movement of the first contact member 9AL.

The first contact member 9AL has 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 the movement direction of the first contact member 9AL.

The first contact member 9AL is integral with the abutting portion 91AL and has an action portion 92AL provided on the side of the guided portion 90AL. The action portion 92AL has a slope inclined with respect to the movement direction of the first contact member 9AL. Alternatively, the action portion 92AL has a slope inclined with respect to the movement direction of the first contact member 9AL and a vertical surface. The action portion 92AL may not have a slope inclined with respect to the movement direction of the first contact member 9AL, but may have a vertical surface and a horizontal surface. The first contact member 9AL has a gap between the guided portion 90AL and the action portion 92AL to accommodate the first cover portion 12L.

The first contact member 9AL is provided with a detection portion 93AL integral with the guided portion 90AL. The detection portion 93AL protrudes toward the second contact member 9AR, intersecting the movement direction of the first contact member 9AL.

The second contact member 9AR has a guided portion 90AR made of a plate-shaped 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.

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

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

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 movement direction of the second contact member 9AR and enters the third guide recess 14R3 of the second cover portion 12R.

The second contact member 9AR further 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 direction in which the second contact member 9AR moves.

The second contact member 9AR is arranged such that the first guide protrusion 94AR1, the second guide protrusion 94AR2, the third guide protrusion 94AR3, the spring mounting portion 94AR4, and the spring 95AR attached to the spring mounting portion 94AR4 are aligned in a straight line along the movement direction of the second contact member 9AR.

The second contact member 9AR has an abutment portion 91AR provided 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 movement direction of the second contact member 9AR.

The second contact member 9AR is integral with the abutting portion 91AR and has an action portion 92AR provided on the side of the guided portion 90AR. The action portion 92AR has a slope inclined with respect to the movement direction of the second contact member 9AR. Alternatively, the action portion 92AR has a slope inclined with respect to the movement direction of the second contact member 9AR and a vertical surface. The action portion 92AR may not have a slope inclined with respect to the movement direction of the second contact member 9AR, but may have a vertical surface and a horizontal surface. The second contact member 9AR has a gap between the guided portion 90AR and the action portion 92AR to accommodate the second cover portion 12R.

The second contact member 9AR is provided with a detection portion 93AR integral with the guided portion 90AR. The detection portion 93AR protrudes toward the first contact member 9AL, intersecting the movement direction of the second contact member 9AR.

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 attached 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 attached to one side portion 302L of the second main body portion 302 by a screw 16Lb via the first cover portion 12L.

For this reason, the cover guide portion 11 is provided with holes 17p in a predetermined arrangement through which the positioning pins 16p pass. The second main body portion 302 is provided with holes 18p in a predetermined arrangement through which the positioning pins 16p pass. The holes 18p are formed with a diameter larger than the diameter of the positioning pins 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 pins 16p, in accordance with the position of the holes 18p. Furthermore, the first cover portion 12L is provided with a restricting portion 18pL that prevents the positioning pins 16p from coming loose, and the second cover portion 12R is provided with a restricting portion 18pR that prevents the positioning pins 16p from coming loose.

The cover guide portion 11 has holes in a predetermined arrangement in the first side wall portion 11L through which the screws 16La and 16Lb are passed. The first cover portion 12L has holes in a predetermined arrangement through which the screws 16Lb are passed. 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.

The cover guide portion 11 has the first cover portion 12L attached to the first side wall portion 11L with screws 16Lc. For this reason, the first cover portion 12L has holes through which the screws 16Lc are passed, provided in a predetermined arrangement. Also, the first side wall portion 11L has screw holes 17Lc through which the screws 16Lc are fastened, provided in a predetermined arrangement.

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 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) that penetrates the first side wall portion 11L, and this screw 16La is fastened to a screw hole (not shown) provided in one side portion 302L of the second main body portion 302. Note that, in order to enable the screw 16La to be operated without removing the link portion 96, an opening portion 99 that penetrates the first link member 96L and the second link member 96R is provided in the link portion 96.

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

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

The cover guide unit 11 has the second side wall portion 11R attached to the other side portion 302R of the second main body portion 302 with the screw 16Ra. The cover guide unit 11 has the second side wall portion 11R attached to the other side portion 302R of the second main body portion 302 with the screw 16Rb via the second cover portion 12R.

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

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 reason, the second cover portion 12R has holes in a predetermined arrangement through which the screws 16Rc are passed. Also, the second side wall portion 11R has screw holes in a predetermined arrangement through which the screws 16Rc are fastened.

Specifically, the cover guide portion 11 has a screw 16Ra passed through a hole (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.

In addition, the cover guide portion 11 has a screw 16Rb that is passed through a hole (not shown) that penetrates the second cover portion 12R and a hole 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.

Furthermore, the cover guide portion 11 has a screw 16Rc passed through a hole (not shown) that penetrates 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.

As a result, the cover guide portion 11 is attached to the second main body portion 302 in a manner 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.

The cover guide section 11 has a first cover section 12L attached to the first side wall section 11L, and a second cover section 12R attached to the second side wall section 11R.

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.

The spring 95AL attached to the spring mounting 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 mounting portion 94AL4 is inserted into the spring support portion 15L2 of the first cover portion 12L.

As a result, the first contact member 9AL is supported so as to be movable along the direction in which the first guide recess 14L1, the second guide recess 14L2, and the third guide recess 14L3 extend.

The first contact member 9AL includes the first guide protrusion 94AL1, the first guide recess 14L1, and other parts that guide the movement of the first contact member 9AL, 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.

In addition, 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. Furthermore, when the first cover portion 12L is attached to the first side wall portion 11L, the restricting portion 18pL faces the end of the positioning pin 16p, preventing the positioning pin 16p from coming loose.

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

The spring 95AR attached to the spring mounting 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 mounting portion 94AR4 is inserted into the spring support portion 15R2 of the second cover portion 12R.

As a result, the second contact member 9AR is supported so as to be movable along the direction in which the first guide recess 14R1, the second guide recess 14R2, and the third guide recess 14R3 extend.

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

The second contact member 9AR includes the first guide protrusion 94AR1, the first guide recess 14R1, and other portions that guide the movement of the second contact member 9AR, as well as 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.

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. Furthermore, when the second cover portion 12R is attached to the second side wall portion 11R, the restricting portion 18pR faces the end of the positioning pin 16p, preventing the positioning pin 16p from coming loose.

Next, the configuration for detecting a pair of contact members will be described. The second body portion 302 includes a sensor mounting portion 310. As shown in FIG. 12, the sensor mounting portion 310 is configured by providing a concave opening in the upper surface portion 302U of the second body portion 302, and is mounted in a form in which the sensor board unit 311 is exposed.

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.

The first sensor 312L is composed of, for example, a magnetic sensor, and the 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. Also, 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.

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.

The second sensor 312R is composed of, for example, a magnetic sensor, and the 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. Also, 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.

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 first 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 first sensor 312R.

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

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 execute a series of operations to bind the rebar S with the wire W.

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. Also, 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. Note that 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 addition, 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.

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 addition, in a configuration in which the second contact member 9AR moves to a standby position, causing the detection unit 93AR to be in a position facing the second sensor 312L, and the second contact member 9AR moves to an 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.

Furthermore, when the orientation of the rebar tying machine 1A is within a predetermined 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 predetermined binding tolerance range, the output of the orientation detection sensor 350 is turned off.

Figure 17A is a perspective view showing an orientation detection sensor according to the first embodiment. The 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.

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 section 360 shown in FIG. 1A. The electrical equipment section 360 houses the control section 100A, and a circuit board on which the circuits, components, etc. that drive the feed motor 31 and the torsion motor 80 are mounted.

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 using the operation unit 353, detection by the acceleration sensor 351 can be enabled or disabled.

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

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 equipment unit 360 shown in FIG. 1A.

The pendulum 355 rotates around the axis 355a depending on the orientation of the rebar binding machine 1A, and the orientation of the rebar binding machine 1A is detected by switching between the presence and absence of detection by the photosensor 354. By switching between the presence and absence of operation of the pendulum 355 with the operation unit 356, it is possible to switch between enabling and disabling detection by the photosensor 354.

Next, the operation of binding the reinforcing bars S with the wire W using the reinforcing bar binding machine 1A will be described. The worker holds the handles 304hL, 304hL of the reinforcing bar binding machine 1A with both hands, aligns the position of the guide part 5A with the intersection of the two reinforcing bars S, and inserts the reinforcing bar S into the insertion/removal opening 53.

The reinforcing bar tying machine 1A is used with the operator standing with the guide part 5A facing downward in order to tie 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 tying 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. In addition, the rebar tying machine 1A is provided with a guide portion 59 at the tip end of the first guide 51A, which is shaped to guide the rebar S to the insertion/removal opening 53. This allows the worker to place the rebar S against the guide portion 59 and move the guide portion 59 so that it slides over the rebar S, making it easier to insert the rebar S into the insertion/removal opening 53.

When inserting the rebar S into the insertion/removal opening 53 between the first guide 51A and the second guide 52, the rebar tying machine 1A moves in the first direction indicated by the arrow A1. Due to this relative movement between the rebar tying machine 1A and the rebar S, the abutment 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 the operating position. In addition, the abutment 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 the operating position.

When the first contact member 9AL moves to the operating position, the output of the first sensor 312L changes from OFF to ON. Also, when the first contact member 9AL moves to the operating 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.

When the second contact member 9AR moves to the operating position, the output of the second sensor 312R changes from OFF to ON. Also, when the second contact member 9AR moves to the operating position, the acting portion 92AR presses the acted portion 97L of the second link member 96R, causing the second link member 96R to rotate about the shaft 96A as a fulcrum. 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.

In addition, since the link portion 96 is connected between 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.

Figure 18 is an explanatory diagram showing the binding tolerance range of the reinforcing bar binding machine of the first embodiment, and Figure 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.

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.

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

Alternatively, when the orientation detection sensor 350 is turned on and the orientation of the rebar binding machine 1A is within a predetermined binding tolerance range E1, 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 turned on, and then performs a series of operations in step SA3.

Furthermore, when the orientation detection sensor 350 is turned on and the orientation of the rebar binding machine 1A is within a predetermined binding tolerance range E1, the control unit 100A may execute a series of operations in step SA3 when it 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.

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.

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 predetermined 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.

Alternatively, when the orientation detection sensor 350 is not on, i.e., the orientation detection sensor 350 is off and the orientation of the rebar binding machine 1A is outside the predetermined binding tolerance range E2, if 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, 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.

Furthermore, 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 predetermined binding tolerance range E2, the control unit 100A may detect 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 detect that the second sensor 312R is on because the second contact member 9AR has moved to the operating position, and may notify in step SA5 that the binding operation cannot be performed by turning on a lamp (not shown), emitting a sound, etc.

After the control unit 100A receives the notification that bundling is not possible, 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, and then returns to step SA1 when the power switch 110 is operated to turn the power off and on. Then, when the orientation detection sensor 350 turns on and the orientation of the rebar bundling machine 1A is within the predetermined bundling tolerance range E1, 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, and the bundling operation is performed.

Or, after the control unit 100A notifies the controller 100A that bundling is not possible, the controller 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 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 and/or the second contact member 9AR have moved to the operating position, with the orientation detection sensor 350 turned on and the orientation of the rebar bundling machine 1A being within the predetermined bundling tolerance range E1, the controller 100A executes the bundling operation.

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 have 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, and executes the bundling operation.

Figure 19B is a flowchart showing another example of the operation of the reinforcing bar binding machine of the first embodiment. Next, we will explain another example of the operation of binding reinforcing bar S with wire W using the reinforcing bar binding machine 1A.

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 because either or both of the first contact member 9AL and the second contact member 9AR have moved to the operating position. In step SB2 of FIG. 19B, 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 is on.

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, it controls the feed motor 31 and the twist motor 80 to execute a series of operations to bind the rebar S with the wire W.

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 the orientation detection sensor 350 is not on, i.e., the orientation of the rebar binding machine 1A is outside the predetermined binding tolerance range E2 and the orientation detection sensor 350 is off, in step SB4, it notifies the user that the binding operation cannot be performed by turning on a lamp (not shown), emitting a sound, etc.

After receiving the notification that bundling is not possible, the control unit 100A detects that the first sensor 312L and the second sensor 312R are off as 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 the predetermined bundling tolerance range E1, and the orientation detection sensor 350 is on, the control unit 100A executes the bundling operation.

Alternatively, if 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 notifying that bundling is not possible, the control unit 100A returns to step SB1. Then, if 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 the predetermined bundling tolerance range E1, and the orientation detection sensor 350 is on, the control unit 100A executes the bundling operation.

Alternatively, the control unit 100A returns to step SB1 after notifying that bundling is not possible. 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 the predetermined bundling tolerance range E1, and the orientation detection sensor 350 is on, it executes the bundling operation.

When the control unit 100A detects that the orientation of the rebar tying machine 1A is outside the predetermined binding tolerance range E2 and the orientation detection sensor 350 is off, and detects 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, the control unit 100A may be configured to perform various settings of the rebar tying machine 1A by a combination of on and off of the first sensor 312L and the second sensor 312R.

In addition, the control unit 100A may not perform 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.

The bundling tolerance range may also be switched. For example, the rebar bundling machine 1A is provided with an operation unit 111 such as a dial that can adjust the bundling force, and the bundling tolerance range may be switched using this operation unit 111. The bundling tolerance range may also 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, or by turning the power on and off by operating the power switch 110. The bundling tolerance range may also 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, or by turning the power on and off by operating the power switch 110. This allows the bundling tolerance range to be set to a setting suitable for 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.

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

As a result, the wire W fed in the forward direction by the feed unit 3 is bent into an arc by contacting the fixed blade unit 60, the regulating member 42, the regulating member 43, and the guide surface 51g of the first guide 51A. The wire W fed in the forward direction by the feed unit 3 is then curled in an approximately circular shape by contacting the fixed blade unit 60 and the regulating member 43 from the outer periphery of the arc, and by contacting the regulating member 42 from the inner periphery of the arc between the fixed blade unit 60 and the regulating member 43.

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 section 3 is curled by the regulating section 4 as described above, and is guided between the pair of side guides 52a of the second guide 52.

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. 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. This causes the wire W to be wound in a spiral shape around the reinforcing bar S.

After stopping the forward feed 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 actuating unit 71 actuates the engaging unit 70, and the engaging unit 70 holds the tip side of the wire W.

When the control unit 100A determines that the twisting motor 80 has been rotated until the wire W is held by the engagement unit 70, 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 wire W is held by the engagement unit 70, 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.

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 as indicated by the arrow R. By feeding the wire W in the reverse direction, the wire W is wound around the reinforcing bar S so that it is in close contact with the reinforcing bar S.

When the control unit 100A determines that the feed motor 31 has been rotated in the reverse direction until the wire W has been wound around the rebar 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.

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.

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.

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

The worker moves the rebar binding machine 1A in the direction in which the rebar S tied with the wire W is removed 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 rebar binding machine 1A in the direction in which the rebar S is removed 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.

When the worker moves the rebar tying machine 1A in the direction to remove the rebar S tied 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.

<Example of the function and effect 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 by using a configuration in which the handle parts 304hL and 304hR do not have an operating part. It is also possible to perform the binding operation by turning on either the first sensor 312L or the second sensor 312R, regardless of the orientation of the reinforcing bar binding machine 1A.

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

In the rebar binding machine 1A, the first contact member 9AL and the second contact member 9AR are supported movably on the cover guide section 11 having the first abutment section 13L and the second abutment section 13R. As a result, the amount of movement of the first contact member 9AL and the second contact member 9AR is determined by the cover guide section 11, so that the amount of movement of the first contact member 9AL and the second contact member 9AR that abuts against the rebar S and moves until the rebar S abuts against the first abutment section 13L or the second abutment section 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.

In addition, 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 at the connection portion 11U, thereby improving the positional accuracy between the first contact member 9AL and the second contact member 9AR.

Furthermore, the cover guide portion 11 is shaped to cover part or all of the front end of the second main body portion 302, parts of both the left and right sides of the front of the second main body portion 302, and the top surface of the second main body portion 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 portion 302 is made of resin, the cover guide portion 11 is made of metal, which reduces wear and damage to the second main body portion 302 even when the reinforcing bar S comes into contact with it.

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 prevents the first contact member 9AL from tilting when a force is applied that tilts the first contact member 9AL with respect to the movement direction of the first contact member 9AL, making it possible 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.

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, debris, etc. from entering the mechanism that guides the movement of the first contact member 9AL, making it possible to reliably operate the first contact member 9AL.

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, debris, etc. from entering the mechanism that guides the movement of the second contact member 9AR, making it possible to reliably operate the second contact member 9AR.

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.

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.

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. Also, when removing the second cover portion 12R, it is not necessary to remove the first cover portion 12L. Also, 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.

Furthermore, the cover guide portion 11 can be removed from the second body portion 302 without removing the link portion 96 from the cover guide 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 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.

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. In contrast, the second guide 52 is attached to the second 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, thereby increasing the amount of rotation of the link portion 96 with the shaft 96A as a fulcrum 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.

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 adjusted appropriately.

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 that detects the first contact member 9AL and the second sensor 312R that detects 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.

Figure 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 housed in a first opening 315 of a case 314, and the first opening 315 is sealed with resin. The case 314 has 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 resin flows through the groove 317 into the second opening 316, and the first opening 315 is sealed with an appropriate amount of resin.

<Modification of rebar tying machine>
21 is a perspective view showing an example of a reinforcing bar binding machine according to the second embodiment. In the reinforcing bar binding machine 1B according to the second embodiment, a guide section 5B including a first guide 51B and a second guide 52B is provided on one side of a main body section 10. The reinforcing bar binding machine 1B is provided with a handle section 10h protruding from the other side of the main body section 10, and a trigger 10t for receiving an operation to operate the reinforcing bar binding machine 1B is provided on the front side of the handle section 10h.

The rebar binding machine 1B includes the above-mentioned first contact member 9AL, second contact member 9AR, and a cover guide portion 11 to which the first contact member 9AL and second contact member 9AR are movably attached. It also includes a first cover portion 12L and a second cover portion 12R that are attached to the cover guide portion 11.

The configuration of the first contact member 9AL, the second contact member 9AR, and the cover guide portion 11 may be the same as 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.

In the rebar tying machine 1B, the second guide 52B is biased by a spring (not shown) to the second position, and is configured to be able to retract to the first position when an external force is applied.

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

1A, 1B, 1C... rebar tying machine, 301... first main body, 302... second main body, 302L... side, 302R... side, 302U... top, 303... connecting part, 10... main body, 10h... handle, 10t... trigger, 2... storage part, 3... feed part, 4... regulating part, 5A, 5B... guide part, 51A, 51B... first guide, 52, 52B... second guide, 53... insertion/removal port, 54... biasing member, Reference Signs: 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, 94AL2, 94AR2: second guide protrusion, 94AL3, 94AR3: third The guide protrusions, 94AL4, 94AR4...spring mounting portions, 95AL, 95AR...springs, 96...link portion (guide moving portion), 96A...shaft, 96L, 96R...link members, 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...connecting portion, 12L...first cover portion (cover portion), 12R...second 2 cover part (cover part), 13L...first contact part, 13R...second contact part, 14L1, 14R1...first guide recess, 14L2, 14R2...second guide recess, 14L3, 14R3...third guide recess, 15L1, 15R1...spring support part, 100A...control part, 110...power switch, 111...operation part, 312L...first sensor, 312R...second sensor, 350...orientation detection sensor, W...wire

Claims (7)

A main body portion,
A cover guide portion attached to the main body portion;
a moving part that moves when it is abutted against an object to be bound;
a sensor that detects that the moving unit has moved to an operating position where the moving unit performs an operation of binding the objects to be bound,
The cover guide portion includes a guide portion that movably guides the movable portion.
and a contact portion against which the object to be bound that has moved the moving portion is abutted when the moving portion is abutted against the object to be bound and moves the moving portion,
The guide portion is provided with a guide recess extending along the moving direction of the moving portion,
the moving portion is provided with a guide protrusion that fits into the guide recess provided in the guide portion,
The guide recess and the guide protrusion define the amount of movement of the moving part until the object to be bound is at a position where it abuts against the contact part. The binding machine of claim 1, wherein the cover guide portion comprises a first side wall portion located on one side of the main body portion, a second side wall portion located on the other side of the main body portion, and a connecting portion connecting the first side wall portion and the second side wall portion. The binding machine according to claim 2 , wherein the cover guide portion covers at least three sides of the main body portion. The binding machine according to any one of claims 1 to 3, further comprising a cover portion that covers the guide portion and is detachable from the cover guide portion. The binding machine according to any one of claims 1 to 4, wherein the guide portion is provided at a plurality of locations on the same axis along the moving direction of the moving portion. The binding machine according to any one of claims 1 to 5, wherein the cover guide portion is provided such that the pair of moving portions are independently movable. 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 an object to be bound, the first guide and the second guide guiding a wire for binding the object to be bound;
a guide movement unit that changes the interval from a first distance to a second distance that is shorter than the first distance,
The binding machine according to any one of claims 1 to 6, wherein a movement fulcrum of the guide movement portion is provided on the cover guide portion.

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