End machine

Abstract

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

Description

Technical Field

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

Background Art

[0002] Conventionally, there has been proposed a tying machine, called a reinforcing bar tying machine, which loops a wire fed out from a wire feeding device around a reinforcing bar, grips the wire with a twisting hook, twists it, and tightens and ties the reinforcing bar with the wire (see, for example, Patent Document 1).

[0003] The reinforcing bar tying machine described in Patent Document 1 is configured to be provided with a contact member that engages with a reinforcing bar during tying and is movable in the front-rear direction, and a switch that engages when the contact member moves rearward to enable the operation of the tying machine.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the reinforcing bar tying machine described in Patent Document 1, if the movement amount of the contact member cannot be ensured, the contact member cannot engage with the switch even when it moves rearward, and the tying operation cannot be executed. However, in Patent Document 1, a configuration for ensuring the movement amount of the contact member is not considered.

[0006] The present disclosure has been made to solve such problems, and an object thereof is to provide a tying machine capable of ensuring the movement amount of a moving part (contact member) that abuts against an object to be tied and moves.

Means for Solving the Problems

[0007] To solve the above-mentioned problems, the bundling machine relating to this disclosure comprises a main body and A first guide extending from the main body in a first direction; a second guide positioned opposite the first guide in a second direction perpendicular to the first direction, rotatably mounted on the main body with a first axis as a pivot point, and movable in directions approaching and away from the first guide; a movable part positioned between the first guide and the second guide, which abuts against an object to be bound inserted between the first guide and the second guide and moves from a standby position to an operating position along the first direction; and a guide movable part that rotates with the second axis as a pivot point. The device comprises a guide moving part having a worked part provided on one radial side of the second shaft and in contact with the moving part, and an operating shaft provided on the other side and in contact with the second guide, and transmitting the movement of the moving part to the second guide to move the second guide, the second guide having a receiving part that protrudes on the opposite side from the first guide and in contact with the operating shaft, and when the moving part moves to the operating position, the worked part is pushed by the moving part and rotates, and the operating shaft pushes the receiving part, thereby moving the second guide in a direction toward the first guide. .

[0008] In this binding machine, when the object to be bound is inserted between the first guide and the second guide, the relative movement between the binding machine and the object to be bound causes the moving part to be pushed by the object to be bound, and the moving part moves. The moving part that abuts against the object to be bound Activated from standby position When you move to the location, The moving part pushes the part that is being worked on. Guide movement part Rotation By doing so, The second guide moves in a direction that moves it closer to the first guide. . [Effects of the Invention]

[0009] The bundling machine relating to this disclosure The working shaft of the guide movement unit and the receiving part of the second guide are in contact, and the moving unit pushes the actuated part, causing the guide movement unit to rotate. This pushes the working shaft against the receiving part, moving the second guide, thereby ensuring that the amount of rotation of the second guide is appropriately matched to the amount of movement of the moving unit. It is possible. [Brief explanation of the drawing]

[0010] [Figure 1A] This is a side view showing an example of the overall configuration of a rebar tying machine according to the first embodiment. [Figure 1B] This is a side view showing an example of the overall configuration of a rebar tying machine according to the first embodiment. [Figure 1C] This is a side view showing an example of the overall configuration of a rebar tying machine according to the first embodiment. [Figure 1D] This is a side view showing an example of the overall configuration of a rebar tying machine according to the first embodiment. [Figure 2] This is a top view showing an example of the overall configuration of a rebar tying machine according to the first embodiment. [Figure 3A] This is a front view showing an example of the overall configuration of a rebar tying machine according to the first embodiment. [Figure 3B] This is a rear view showing an example of the overall configuration of the rebar tying machine according to the first embodiment. [Figure 4] This is a side view showing an example of the internal configuration of a rebar tying machine according to the first embodiment. [Figure 5A] This is a side view showing the main internal components of the rebar tying machine according to the first embodiment. [Figure 5B]It is a side view showing the main part of the internal structure of the steel bar tying machine according to the first embodiment. [Figure 6A] It is a side view showing the main part configuration of the steel bar tying machine according to the first embodiment. [Figure 6B] It is a side view showing the main part configuration of the steel bar tying machine according to the first embodiment. [Figure 7] It is a perspective view showing the main part configuration of the steel bar tying machine according to the first embodiment. [Figure 8] It is an explanatory diagram showing the main part configuration and the operation and effect of the steel bar tying machine according to the first embodiment. [Figure 9A] It is an explanatory diagram showing the main part configuration and the operation and effect of the steel bar tying machine according to the first embodiment. [Figure 9B] It is an explanatory diagram showing the main part configuration and the operation and effect of the steel bar tying machine according to the first embodiment. [Figure 10] It is an explanatory diagram showing the main part configuration and the operation and effect of the steel bar tying machine according to the first embodiment. [Figure 11] It is an explanatory diagram showing the main part configuration and the operation and effect of the steel bar tying machine according to the first embodiment. [Figure 12] It is an explanatory diagram showing the main part configuration and the operation and effect of the steel bar tying machine according to the first embodiment. [Figure 13] It is an explanatory diagram showing the main part configuration and the operation and effect of the steel bar tying machine according to the first embodiment. [Figure 14] It is an explanatory diagram showing the main part configuration and the operation and effect of the steel bar tying machine according to the first embodiment. [Figure 15A] It is an explanatory diagram showing the main part configuration and the operation and effect of the steel bar tying machine according to the first embodiment. [Figure 15B] It is an explanatory diagram showing the main part configuration and the operation and effect of the steel bar tying machine according to the first embodiment. [Figure 16] It is a functional block diagram of the steel bar tying machine according to the first embodiment. [Figure 17A] It is a perspective view showing the orientation detection sensor according to the first embodiment. [Figure 17B] It is a perspective view showing the orientation detection sensor according to the second embodiment. [Figure 18]This is an explanatory diagram showing the allowable tying range of the rebar tying machine according to the first embodiment. [Figure 19A] This is a flowchart showing an example of the operation of the rebar tying machine according to the first embodiment. [Figure 19B] This flowchart shows another example of the operation of the rebar tying machine according to the first embodiment. [Figure 20] This is a perspective view showing an example of the operation and effect of the sensor substrate unit. [Figure 21] This is a perspective view showing an example of a rebar tying machine according to the second embodiment. [Figure 22] This is a perspective view showing an example of a rebar tying machine according to the third embodiment. [Modes for carrying out the invention]

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

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

[0013] The first embodiment of the rebar tying machine 1A comprises a first main body 301 that can be held by hand, a second main body 302 equipped with a mechanism for tying rebars S with wire W, and a long connecting part 303 that connects the first main body 301 and the second main body 302. The first main body 301 is equipped with a pair of handle parts 304hL and 304hR that can be gripped by the operator. The first main body 301 is also equipped with a power switch 110 for turning the power of the rebar tying machine 1A on and off, and an operation part 111 having a dial for adjusting the tying force.

[0014] 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 housing section 2 that rotatably houses a wire reel 20 on which wire W is wound, and a feeding section 3 that feeds the wire W wound on the wire reel 20 housed in the housing section 2. The second main body 302 also includes a regulating section 4 that imparts a coil to the wire W being fed by the feeding section 3, and a guide section 5 that guides the wire W as the coil is being imprinted by the regulating section 4. Furthermore, the second main body 302 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 and the twisting section 7, etc.

[0015] The rebar tying machine 1A has a guide section 5 on one side of the second main body section 302. The first main body section 301 and the second main body section 302 are connected by a connecting section 303, resulting in a configuration where the distance between the guide section 5 and the handle sections 304hL and 304hR is extended compared to a rebar tying machine that does not have a connecting section 303. In this embodiment, the side on which the guide section 5 is provided is defined as the front.

[0016] The storage section 2 is configured to allow the attachment, detachment, and support of the wire reel 20. The feeding section 3 includes a pair of feed gears 30 as feeding members. The feeding section 3 feeds the wire W by rotating the feed gears 30 with a motor (not shown) while the wire W is held between the pair of feed gears 30. Depending on the rotation direction of the feed gears 30, the feeding section 3 can feed the wire W in both the forward direction indicated by arrow F and the reverse direction indicated by arrow R.

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

[0018] The fixed blade section 60 has an opening 60a through which the wire W passes. The movable blade section 61 rotates with the fixed blade section 60 as a pivot point to cut the wire W passing through the opening 60a of the fixed blade section 60.

[0019] The restricting section 4 is equipped with first to third restricting members that contact the wire W at multiple locations along the feeding direction of the wire W fed by the feeding section 3, at least three locations in this example, thereby causing the wire W to develop a coiled shape that follows the feeding path Wf of the wire W, shown by the dashed line in Figure 5B.

[0020] The restricting section 4 has a first restricting member which is composed of the fixed blade section 60 described above. Furthermore, the restricting section 4 is equipped with a second restricting member, a restricting member 42, downstream of the fixed blade section 60, for forward feeding of the wire W indicated by arrow F, and a third restricting member, a restricting member 43, downstream of the restricting member 42. The restricting members 42 and 43 are cylindrical members, and the wire W is in contact with their outer circumferential surfaces.

[0021] The regulating section 4 has a fixed blade section 60, regulating members 42 and 43 arranged in a curve to match the roughly annular wire feed path Wf that forms a spiral. The fixed blade section 60 has an opening 60a through which the wire W passes, which is provided on the wire feed path Wf. The regulating member 42 is provided radially inward with respect to the wire feed path Wf. Furthermore, the regulating member 43 is provided radially outward with respect to the wire feed path Wf.

[0022] As a result, the wire W fed by the feed unit 3 passes through the fixed blade unit 60, the restricting member 42, and the restricting member 43 in contact with each other, thereby creating a coiled shape in the wire W so that it follows the feed path Wf of the wire W.

[0023] The restricting unit 4 includes a transmission mechanism 44 that transmits the movement of the drive unit 8 to the restricting member 42. The restricting member 42 is configured to move to a position where it contacts the wire W when the feed unit 3 feeds the wire W in the forward direction and creates a coil around the wire W, and to move to a position where it does not contact the wire W when the feed unit 3 feeds the wire W in the reverse direction and wraps the wire W around the reinforcing bar S.

[0024] The guide section 5A includes a first guide 51A for guiding the wire W, a second guide 52 for guiding the wire W, which has been coiled by the restricting section 4 and the first guide 51A, to the twisting section 7, and a third guide 55 for restricting the radial position of the wire W with respect to the feed path Wf.

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

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

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

[0028] The second guide 52 is attached to the front end of the second main body 302. The second guide 52 is positioned opposite the first guide 51A in the second direction indicated by arrow A2, which is the vertical direction perpendicular to the first direction. A predetermined gap is left between the first guide 51A and the second guide 52 along the second direction, and an insertion / removal opening 53 is formed between the first guide 51A and the second guide 52 for inserting and removing the reinforcing bar S.

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

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

[0031] The second guide 52, in conjunction with a pair of contact members described later, rotates with the axis 52b as a pivot point, moving between a first position, as shown in Figure 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 Figure 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, which is shorter than the first distance.

[0032] When the second guide 52 is in the second position, there is an opening between the end 52c of the second guide 52 and the end 51c of the first guide 51A. 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 widens, making it easier to insert reinforcing bars into the insertion / removal opening 53 between the first guide 51A and the second guide 52.

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

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

[0035] The second guide 52 includes a receiving portion 56 that receives the movement of a pair of contact members, described later, via a link portion. The receiving portion 56 is composed of a surface perpendicular to the lower surface of the second guide 52, or a surface inclined with respect to a direction perpendicular to the lower surface of the second guide 52. The receiving portion 56 is configured, for example, by providing a surface on the lower surface of the second guide 52 that protrudes along the rotational direction of the second guide 52 with the shaft 52b as the pivot point. The receiving portion 56 is inclined, for example, in a direction parallel to the lower surface of the second guide 52, such that the distance from the shaft 52b to the surface of the receiving portion 56 increases as it approaches the second guide 52.

[0036] The guide section 5A includes a guide section 59 for guiding the reinforcing bar S into the insertion / removal opening 53. The guide section 59 is provided on the tip side of the first guide 51A and is configured to have a surface that reduces the distance between the first guide 51A and the second guide 52, extending from the tip side of the guide section 59 toward the base side. Specifically, the guide section 59 is configured to have an inclined surface that slopes in a direction that reduces the distance between the first guide 51A and the second guide 52, with respect to the first direction indicated by arrow A1, extending 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.

[0037] Guide portion 5A is provided with a projection 57 on the first guide 51A. The projection 57 is configured to have a portion that protrudes laterally from the first guide 51A along the third direction indicated by arrow A3. In this example, the first guide 51A has a groove portion 51h having the guide surface 51g described above and a regulating member 43, and the guide arm 51d that guides the wire W is covered by a cover portion 57A made of a metal plate. The projection 57 is configured in such a way 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 bent outward along the third direction. Note that the projection 57 may also be provided on the guide arm 51d. Furthermore, the first guide 51A may have a configuration in which the guide arm 51d and the cover portion 57A are integrated, and the protruding portion 57 may be provided integrally with the first guide 51A in which the guide arm 51d and the cover portion 57A are integrated. Alternatively, the protruding portion 57 may be formed by providing an uneven shape on the side of the cover portion 57A, the side of the guide arm 51d, or the side of the first guide 51A in which the guide arm 51d and the cover portion 57A are integrated.

[0038] The twisting section 7 comprises an engaging section 70 through which the wire W engages, and an operating section 71 that operates the engaging section 70. The engaging section 70 has a first passage through which the wire W, which has been fed to the cutting section 6 by the feeding section 3, passes, and a second passage through which the wire W, which has been given a coiled shape by the regulating section 4 and guided to the twisting section 7 by the guide section 5, passes. The engaging section 70 rotates due to the operation of the operating section 71, thereby twisting the wire W wrapped around the reinforcing bar S.

[0039] The drive unit 8 includes a torsion motor 80 that drives the torsion section 7, etc., a reduction gear 81 that performs reduction and torque amplification, a rotating shaft 82 that rotates driven by the torsion motor 80 via the reduction gear 81, and a moving member 83 that transmits driving force to the cutting section 6 and the regulating member 42. The torsion section 7 and the drive unit 8 have their rotation centers coaxially arranged with respect to the rotating shaft 82 and the rotation centers of the operating section 71 and the engaging section 70. The rotation center of the rotating shaft 82 and the rotation centers of the operating section 71 and the engaging section 70 is referred to as the axis Ax. In this example, the first direction indicated by arrow A1 is the direction along the axis Ax.

[0040] The drive unit 8 moves the operating unit 71 along the axial direction of the rotating shaft 82 by the rotational motion of the rotating shaft 82. As the operating unit 71 moves along the axial direction of the rotating shaft 82, the engaging unit 70 holds the tip end of the wire W, which is guided by the twisted unit 7 at the guide unit 5.

[0041] The drive unit 8 moves in conjunction with the movement of the operating unit 71 along the axial direction of the rotating shaft 82, causing the moving member 83 to move along the axial direction of the rotating shaft 82. The movement of the moving member 83 is transmitted to the restricting member 42 by the transmission mechanism 44, causing the restricting member 42 to move to a position where it does not come into contact with 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 61 by the transmission mechanism 62, causing the movable blade 61 to actuate and cut the wire W.

[0042] The drive unit 8 rotates the operating unit 71, which has been moved along the axial direction of the rotating shaft 82, by the rotational movement of the rotating shaft 82. As the operating unit 71 rotates around the axis of the rotating shaft 82, it twists the wire W at the engaging unit 70.

[0043] Figures 6A and 6B are side views showing the main components of the rebar tying machine of the first embodiment, and Figure 7 is a perspective view showing the main components of the rebar tying machine of the first embodiment. Next, the configuration of the contact member and the link part that links the movement of the contact member to the second guide will be described.

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

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

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

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

[0048] The link section 96 is an example of a guide movement section and comprises 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. The link section 96 is rotatably supported by an axis 96A, which is a pivot point.

[0049] The link portion 96 has an actuated portion 97L connected to the first contact member 9AL on one side of the first link member 96L with respect to the shaft 96A. The actuated portion 97L is composed of a member that protrudes laterally from the first link member 96L and is in contact with the actuated portion 92AL of the first contact member 9AL.

[0050] Furthermore, the link portion 96 has an actuated portion 97R connected to the second contact member 9AR on one side of the second link member 96R with respect to the shaft 96A. The actuated portion 97R is composed of a member that protrudes laterally from the second link member 96R and is in contact with the actuated portion 92AR of the second contact member 9AR.

[0051] Furthermore, the link portion 96 is provided with 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 operating shaft 98A that contacts the receiving portion 56 of the second guide 52, an opening 98B that supports the operating shaft 98A, and a spring 98C that presses against the operating shaft 98A.

[0052] The working shaft 98A is cylindrical in shape and has a length that connects the first link member 96L and the second link member 96R.

[0053] The openings 98B are provided in the first link member 96L and the second link member 96R, respectively. The circumferential length of the opening 98B along the rotational direction of the link portion 96 with the shaft 96A as the pivot point, and the radial length perpendicular to it, are configured to be larger than the diameter of the working shaft 98A. As a result, the working shaft 98A, which is placed in the opening 98B, is configured to be movable in the circumferential or tangential direction along the rotational direction of the link portion 96 with the shaft 96A as the pivot point, and in the radial direction perpendicular to the rotational direction.

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

[0055] Figures 8 to 15A and 15B are explanatory diagrams showing the main components and operation and effects of the rebar tying machine of the first embodiment. Next, the details of the configuration for attaching the contact members and link parts will be explained.

[0056] The rebar tying machine 1A covers a predetermined front portion of the second main body 302 and includes a cover guide portion 11 to which a first contact member 9AL and a second contact member 9AR and a link portion 96 are attached. The rebar 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.

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

[0058] As shown in Figure 11, the cover guide portion 11 is integrally constructed from a metal plate material, comprising a first side wall portion 11L, a second side wall portion 11R, and a connecting portion 11U. The first side wall portion 11L and the second side wall portion 11R of the cover guide portion 11 face each other at a distance equivalent to the width dimension along the third direction indicated by arrow A3 of the second main body portion 302.

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

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

[0061] The cover guide portion 11 is provided with a first contact portion 13L at the front end of the first side wall portion 11L. The cover guide portion 11 is also provided with a second contact portion 13R at the front end of the second side wall portion 11R.

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

[0063] The cover guide portion 11 is provided with a first guide recess 14L1 and a second guide recess 14L2 in 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 direction of movement of the first contact member 9AL, which is the first direction indicated by arrow A1.

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

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

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

[0067] When the first cover portion 12L is attached to the first side wall portion 11L, as shown in Figure 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 coaxially Bx along the direction of movement of the first contact member 9AL.

[0068] The cover guide portion 11 is provided with a first guide recess 14R1 and a second guide recess 14R2 in 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 openings that extend along the direction of movement of the second contact member 9AR.

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

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

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

[0072] When the second cover portion 12R is attached to the second side wall portion 11R, as shown in Figure 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 direction of movement of the second contact member 9AR.

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

[0074] The first contact member 9AL has a guided portion 90AL made of a plate-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.

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

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

[0077] Furthermore, the first contact member 9AL has a third guide projection 94AL3 on the other side of the guided portion 90AL that faces the first cover portion 12L and is attached to the first side wall portion 11L of the cover guide portion 11. The third guide projection 94AL3 protrudes in a direction perpendicular to the direction of movement of the first contact member 9AL and enters the third guide recess 14L3 of the first cover portion 12L.

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

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

[0080] The first contact member 9AL has a contact portion 91AL on the front end side of the guided portion 90AL. The contact portion 91AL is composed of surfaces in a direction intersecting the direction of movement of the first contact member 9AL.

[0081] The first contact member 9AL has an action portion 92AL provided on the side of the guided portion 90AL, integrally with the contact portion 91AL. The action portion 92AL has an inclined surface that is inclined with respect to the direction of movement of the first contact member 9AL. Alternatively, the action portion 92AL has an inclined surface that is inclined with respect to the direction of movement of the first contact member 9AL and a perpendicular surface. The action portion 92AL may also be configured to have a perpendicular surface and a horizontal surface, without an inclined surface that is inclined with respect to the direction of movement of the first contact member 9AL. The first contact member 9AL has a gap between the guided portion 90AL and the action portion 92AL into which the first cover portion 12L is inserted.

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

[0083] 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.

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

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

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

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

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

[0089] The second contact member 9AR has a contact portion 91AR on the front end side of the guided portion 90AR. The contact portion 91AR is composed of surfaces in a direction intersecting the direction of movement of the second contact member 9AR.

[0090] The second contact member 9AR is integral with the contact portion 91AR and has an action portion 92AR provided on the side of the guided portion 90AR. The action portion 92AR has an inclined surface that is inclined with respect to the direction of movement of the second contact member 9AR. Alternatively, the action portion 92AR has an inclined surface that is inclined with respect to the direction of movement of the second contact member 9AR and a perpendicular surface. The action portion 92AR may also be configured to have a perpendicular surface and a horizontal surface without an inclined surface that is inclined with respect to the direction of movement of the second contact member 9AR. The second contact member 9AR has a gap between the guided portion 90AR and the action portion 92AR in which the second cover portion 12R is inserted.

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

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

[0093] Therefore, the cover guide portion 11 is provided with a hole portion 17p through which the positioning pin 16p passes in a predetermined arrangement. The second main body portion 302 is also provided with a hole portion 18p through which the positioning pin 16p passes in a predetermined arrangement. The hole portion 18p is composed of a hole larger than the diameter of the positioning pin 16p, and the first guide 51A, in this example, the guide arm 51d that constitutes the first guide 51A, is provided with a hole portion (not shown) that is approximately the same diameter as the positioning pin 16p, aligned with the position of the hole portion 18p. Furthermore, the first cover portion 12L is provided with a restricting portion 18pL to prevent the positioning pin 16p from coming out, and the second cover portion 12R is provided with a restricting portion 18pR to prevent the positioning pin 16p from coming out.

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

[0095] Furthermore, the cover guide portion 11 is attached to the first side wall portion 11L by screws 16Lc, with the first cover portion 12L being attached. For this reason, the first cover portion 12L is provided with holes through which the screws 16Lc pass in a predetermined arrangement. Also, screw holes 17Lc through which the screws 16Lc are fastened are provided in the first side wall portion 11L in a predetermined arrangement.

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

[0097] Furthermore, the cover guide portion 11 is fastened with a screw 16Lb that passes 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. This screw 16Lb is fastened with a screw hole (not shown) provided on one side portion 302L of the second main body portion 302.

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

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

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

[0101] Furthermore, the cover guide portion 11 is attached to the second side wall portion 11R by a screw 16Rc through the second cover portion 12R. For this reason, the second cover portion 12R is provided with holes through which the screw 16Rc passes in a predetermined arrangement. Also, screw holes through which the screw 16Rc is fastened are provided in the second side wall portion 11R in a predetermined arrangement.

[0102] 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.

[0103] Furthermore, the cover guide portion 11 is fastened with a screw 16Rb that passes through a hole (not shown) that penetrates the second cover portion 12R, and then through a hole 18Rb that penetrates the second side wall portion 11R. This screw 16Rb is then fastened with a screw hole (not shown) provided in the other side portion 302R of the second main body portion 302.

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

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

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

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

[0108] Furthermore, the first contact member 9AL has a spring 95AL attached to the spring mounting portion 94AL4 which is inserted into the spring support portion 15L1 of the first side wall portion 11L. In addition, the first contact member 9AL has a third guide projection 94AL3 which 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.

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

[0110] Furthermore, the first contact member 9AL has a first guide projection 94AL1 and a first guide recess 14L1, etc., which are parts that guide the movement of the first contact member 9AL, and the spring 95AL is covered by the first cover portion 12L. In addition, the contact portion 91AL and the working portion 92AL of the first contact member 9AL are exposed from the first cover portion 12L.

[0111] Furthermore, the first contact member 9AL is biased by a spring 95AL so that the contact portion 91AL protrudes from the first contact portion 13L of the first side wall portion 11L. In addition, 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, thereby preventing the positioning pin 16p from coming loose.

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

[0113] Furthermore, the second contact member 9AR has a spring 95AR attached to the spring mounting portion 94AR4 which is inserted into the spring support portion 15R1 of the second side wall portion 11R. In addition, the second contact member 9AR has a third guide projection 94AR3 which 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.

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

[0115] The first contact member 9AL and the second contact member 9AR are independent components and can operate independently of each other.

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

[0117] Furthermore, the second contact member 9AR is biased by a spring 95AR so that the contact portion 91AR protrudes from the second contact portion 13R of the second side wall portion 11R. In addition, 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, thereby preventing the positioning pin 16p from coming loose.

[0118] Next, a configuration for detecting a pair of contact members will be described. The second main body portion 302 includes a sensor mounting portion 310. As shown in Figure 12, the sensor mounting portion 310 is configured by providing a concave opening in the upper surface portion 302U of the second main body portion 302, and is mounted in a manner that exposes the sensor substrate unit 311.

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

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

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

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

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

[0124] Figure 16 is a functional block diagram of a rebar tying machine according to the first embodiment. The rebar tying machine 1A has a first sensor 312L that detects the detection unit 93AL when the first contact member 9AL is pressed against the rebar S, a second sensor 312R that detects the detection unit 93AR when the second contact member 9AR is pressed against the rebar S, and the control unit 100A detects the output of an orientation detection sensor 350 that detects the orientation of the rebar tying machine 1A.

[0125] The control unit 100A controls the feed motor 31 that drives the feed gear 30 and the torsion motor 80 that drives the torsion section 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, and performs a series of operations to tie the reinforcing bars S with wire W.

[0126] In this example, when the first contact member 9AL is moved to the standby position shown in Figure 1A, 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. When the first contact member 9AL is moved to the operating position shown in Figure 1C, the detection unit 93AL is in a position facing the first sensor 312L. In this state, the output of the first sensor 312L is turned on. In a configuration where the detection unit 93AL passes a position facing the first sensor 312L when the first contact member 9AL moves to the operating position, the output of the first sensor 312L is turned on when the detection unit 93AL moves to a position facing the first sensor 312L. Furthermore, even after the detection unit 93AL passes a position facing the first sensor 312L, the output of the first sensor 312L is kept on. Furthermore, in a configuration where the detection unit 93AL faces the first sensor 312L when the first contact member 9AL moves to the standby position, and the detection unit 93AL faces 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 faces the first sensor 312L. Moreover, when the detection unit 93AL moves to a position that does not face the first sensor 312L, the output of the first sensor 312L is turned on.

[0127] Furthermore, when the second contact member 9AR is in the standby position shown in Figure 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. Also, when the second contact member 9AR is in the operating position shown in Figure 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. Note that in a configuration where the detection unit 93AR passes through a position facing the second sensor 312R when the second contact member 9AR moves to the operating position, the output of the second sensor 312R is turned on when the detection unit 93AR moves to a position facing the second sensor 312R. Furthermore, even when the detection unit 93AR passes through a position facing the second sensor 312R, the output of the second sensor 312R is kept on. Furthermore, in a configuration where the detection unit 93AR faces the second sensor 312R when the second contact member 9AR moves to the standby position, and the detection unit 93AR faces the second sensor 312R when the second contact member 9AR moves to the operating position, the output of the second sensor 312R is turned off when the detection unit 93AR faces the second sensor 312R. Moreover, when the detection unit 93AR moves to a position that does not face the second sensor 312R, the output of the second sensor 312R is turned on.

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

[0129] Figure 17A is a perspective view showing the orientation detection sensor of the first embodiment. The orientation detection sensor 350A of the first embodiment includes an acceleration sensor 351, a switch 352 for switching whether or not detection by the acceleration sensor 351 is performed, and an operation unit 353 for switching the switch 352 on and off.

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

[0131] The acceleration sensor 351 detects the orientation of the rebar tying machine 1A by detecting acceleration in at least one axis direction. The operation unit 353 switches the on and off of switch 352 to enable or disable detection by the acceleration sensor 351.

[0132] Figure 17B is a perspective view showing the 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 for switching whether or not the pendulum 355 is operating.

[0133] The orientation detection sensor 350B is provided on the second main body 302. In this example, the orientation detection sensor 350B is provided on the electrical unit 360 shown in Figure 1A.

[0134] The pendulum 355 rotates around its axis 355a as a pivot point according to the orientation of the rebar tying machine 1A, and the orientation of the rebar tying machine 1A is detected by switching the detection status of the photosensor 354 on or off. By switching the operation status of the pendulum 355 on or off using the control unit 356, the detection status of the photosensor 354 can be switched on or off.

[0135] Next, the operation of tying the reinforcing bars S with wire W using the reinforcing bar tying machine 1A will be explained. The worker grasps the handles 304hL, 304hL of the reinforcing bar tying 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 bars S into the insertion / removal opening 53.

[0136] The rebar tying machine 1A is used with the guide section 5A facing downwards and the worker standing, in order to tie rebars S at the worker's feet. When the second guide 52 is in the second position, the spacing of the insertion / extraction openings 53 along the second direction indicated by arrow A2 is narrower compared to when the second guide 52 is in the first position. Therefore, in conventional tying machines where the second guide 52 is in the second position, it is difficult to insert the rebar S into the insertion / extraction openings 53 when inserting the rebar S. To address this, when no rebar S is inserted into the insertion / extraction openings 53, the rebar tying machine 1A moves the second guide 52 to the first position, as shown in Figures 1A and 1B, and the spacing between the end 52c of the second guide 52 and the end 51c of the first guide 51A widens. Furthermore, the rebar tying machine 1A is provided with a guide section 59 at the tip of the first guide 51A, which is shaped to guide the rebar S into the insertion / removal opening 53. This makes it easier for the worker to insert the rebar S into the insertion / removal opening 53 by placing the rebar S against the guide section 59 and moving the guide section 59 so that it slides over the rebar S.

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

[0138] 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 actuating part 92AL pushes the actuated part 97L of the first link member 96L, causing the first link member 96L to rotate around the shaft 96A as a pivot. The rotation of the first link member 96L around the shaft 96A causes the actuating shaft 98A to move in a direction toward the first guide 51A. As a result, the actuating shaft 98A pushes the receiving part 56 of the second guide 52, causing the second guide 52 to move to the second position.

[0139] When the second contact member 9AR moves to the 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 actuating part 92AR pushes the actuated part 97L of the second link member 96R, causing the second link member 96R to rotate around the shaft 96A as a pivot. The rotation of the second link member 96R around the shaft 96A causes the actuating shaft 98A to move in a direction toward the first guide 51A. As a result, the actuating shaft 98A pushes the receiving part 56 of the second guide 52, causing the second guide 52 to move to the second position.

[0140] Furthermore, since the link section 96 is connected to the first link member 96L and the second link member 96R, when either the first contact member 9AL or the second contact member 9AR moves to the operating position, the second guide 52 moves to the second position.

[0141] Figure 18 is an explanatory diagram showing the allowable tying range of the rebar tying machine of the first embodiment, and Figure 19A is a flowchart showing an example of the operation of the rebar tying machine of the first embodiment. Next, an example of the operation of tying rebars S with wire W using the rebar tying machine 1A will be described.

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

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

[0144] Alternatively, if the control unit 100A detects that the orientation detection sensor 350 is turned on and the orientation of the rebar tying machine 1A is within a predetermined tying tolerance range E1, and that the second sensor 312R is turned on in step SA2 of Figure 19A due to the second contact member 9AR moving to the operating position, then in step SA3, the control unit 100A executes a series of operations.

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

[0146] In this case, 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 cases, the binding operation can be reliably performed by enabling the binding operation to be executed when either the first sensor 312L or the second sensor 312R is turned on.

[0147] When the control unit 100A detects that the first sensor 312L is turned on in step SA4 of Figure 19A because the first contact member 9AL has moved to the operating position, while the orientation detection sensor 350 is not on, i.e., the orientation detection sensor 350 is off and the orientation of the rebar tying machine 1A is outside the predetermined tying tolerance range E2, the control unit 100A notifies that the tying operation cannot be performed in step SA5 by lighting up a lamp (not shown), making an audible sound, etc.

[0148] Alternatively, if the control unit 100A detects that the second sensor 312R is turned on in step SA4 of Figure 19A because the second contact member 9AR has moved to the operating position, while the orientation detection sensor 350 is not on, i.e., the orientation detection sensor 350 is off and the orientation of the rebar tying machine 1A is outside the predetermined tying tolerance range E2, then in step SA5, it notifies that the tying operation cannot be performed by lighting a lamp (not shown), making an audible sound, etc.

[0149] Furthermore, in step SA4 of Figure 19A, when the orientation detection sensor 350 is not on, that is, when the orientation detection sensor 350 is off and the orientation of the rebar tying machine 1A is outside the predetermined tying tolerance range E2, the control unit 100A may detect in step SA5 that the tying operation cannot be performed by lighting a lamp (not shown), sounding an audible signal, etc.

[0150] After receiving notification that tying is not possible, the control unit 100A detects that the first sensor 312L is off because the first contact member 9AL has moved to the standby position, and that the second sensor 312R is off because the second contact member 9AR has moved to the standby position. Furthermore, when the power is turned off and on by operating the power switch 110, the control unit returns to step SA1. Then, when the orientation detection sensor 350 turns on and the orientation of the rebar tying machine 1A is within the predetermined tying 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, the control unit 100A executes the tying operation.

[0151] Alternatively, after receiving notification that tying is not possible, the control unit 100A detects that the first sensor 312L is off because the first contact member 9AL has moved to the standby position, and also detects that the second sensor 312R is off because the second contact member 9AR has moved to the standby position, and returns to step SA1. Then, when the orientation detection sensor 350 turns on and the orientation of the rebar tying machine 1A is within a predetermined tying 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, it executes the tying operation.

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

[0153] Figure 19B is a flowchart showing another example of the operation of the rebar tying machine of the first embodiment, and next, another example of the operation of tying the rebars S with wire W using the rebar tying machine 1A will be described.

[0154] In step SB1 of Figure 19B, the control unit 100A detects that either or both of the first contact member 9AL and the second contact member 9AR have moved to the operating position, thereby turning on the first sensor 312L or the second sensor 312R, or both the first sensor 312L and the second sensor 312R. In step SB2 of Figure 19B, the control unit 100A detects whether the orientation of the rebar tying machine 1A is within a predetermined tying tolerance range E1 and whether the orientation detection sensor 350 is turned on.

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

[0156] If the control unit 100A detects that the first sensor 312L or the second sensor 312R, or both the first sensor 312L and the second sensor 312R are ON, and detects that the orientation detection sensor 350 is OFF, that is, the orientation of the rebar tying machine 1A is outside the predetermined tying tolerance range E2 and the orientation detection sensor 350 is OFF, then in step SB4, it notifies that the tying operation cannot be performed by lighting a lamp (not shown), making an audible sound, etc.

[0157] After receiving notification that tying is not possible, 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. Furthermore, when the power is turned off and on by operating the power switch 110, the control unit returns to step SB1. Then, it detects that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R are on, and when it detects that the orientation of the rebar tying machine 1A is within the predetermined tying tolerance range E1 and that the orientation detection sensor 350 is on, it executes the tying operation.

[0158] Alternatively, after receiving notification that tying is not possible, the control unit 100A detects that the first sensor 312L and the second sensor 312R are off because the first contact member 9AL and the second contact member 9AR have moved to the standby position, and returns to step SB1. Then, if it detects that the first sensor 312L or the second sensor 312R, or both the first sensor 312L and the second sensor 312R are on, and detects that the orientation of the rebar tying machine 1A is within the predetermined tying tolerance range E1 and that the orientation detection sensor 350 is on, it executes the tying operation.

[0159] Alternatively, after receiving notification that tying is not possible, the control unit 100A returns to step SB1. Then, it detects that the first sensor 312L or the second sensor 312R, or both the first sensor 312L and the second sensor 312R are on, and if it detects that the orientation of the rebar tying machine 1A is within a predetermined tying tolerance range E1 and that the orientation detection sensor 350 is on, it executes the tying operation.

[0160] Furthermore, when the control unit 100A detects that the orientation of the rebar tying machine 1A is outside the predetermined tying tolerance range E2 and the orientation detection sensor 350 is off, and either or both of the first contact member 9AL and the second contact member 9AR move to the operating position, the control unit 100A may detect that the first sensor 312L or the second sensor 312R, or the first sensor 312L and the second sensor 312R are on, and then make various settings for the rebar tying machine 1A using combinations of on and off states of the first sensor 312L and the second sensor 312R.

[0161] Furthermore, the control unit 100A may not perform the binding operation when the detection of the orientation detection sensor 350 (350A, 350B) is disabled, and may allow the setting of the rebar binding machine 1A by the combination of turning the first sensor 312L and the second sensor 312R on and off due to the operation of the first contact member 9AL and the second contact member 9AR. In addition, if 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 malfunction has occurred in the orientation detection sensor 350 (350A, 350B) and send a notification.

[0162] Furthermore, the tying tolerance range may be switched. For example, the rebar tying machine 1A is provided with an operating unit 111 such as a dial for adjusting the tying force, and the tying tolerance range may be switched using this operating unit 111. Alternatively, the tying tolerance range may be switched by combinations of on / off states of the first sensor 312L and the second sensor 312R due to 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. In addition, the tying tolerance range may be switched by combinations of operations on the operating unit 111, combinations of on / off states of the first sensor 312L and the second sensor 312R due to 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 tying tolerance range to be set to suit the work environment and work site. For example, the system can be configured to tie reinforcing bars (objects to be tied) not only downwards, but also to the sides and upwards for the worker (user). By setting the tie-tying tolerance range to suit the work environment and work site, it is possible to prevent unintended tying by the worker (user) or tying at undesirable angles to the reinforcing bars (objects to be tied).

[0163] To illustrate an example of the sequence of operations for tying reinforcing bars S with wire W, the feed motor 31 rotates in the forward direction, and the feed gear 30 rotates in the forward direction, causing the wire W to be fed in the forward direction indicated by 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 restricting member constituting the restricting unit 4, and the restricting member 42, which is the second restricting member. After passing through the restricting member 42, the wire W comes into contact with the guide surface 51g of the first guide 51A, and is guided to the restricting member 43, which is the third restricting member.

[0164] As a result, the wire W being fed in the forward direction by the feed unit 3 is bent into an arc shape by contacting the fixed blade 60, the restricting member 42, the restricting member 43, and the guide surface 51g of the first guide 51A. The wire W being fed in the forward direction by the feed unit 3 is then given a coil shape that forms a nearly circular form by contacting the fixed blade 60 and the restricting member 43 from the outer circumference direction of the arc, and by contacting the restricting member 42 from the inner circumference direction of the arc between the fixed blade 60 and the restricting member 43.

[0165] A predetermined gap is maintained between the end 51c of the first guide 51A and the end 52c of the second guide 52 when the second guide 52 is moved to the second position. However, when the second guide 52 is moved to the second position, the pair of side guides 52a are located in the wire feeding path Wf, and the wire W, which is fed in the forward direction by the feeding section 3, is given a coiled shape by the regulating section 4 as described above, and is therefore guided between the pair of side guides 52a of the second guide 52.

[0166] The wire W, guided between the pair of side guides 52a of the second guide 52, is fed in the forward direction by the feed unit 3, and is guided by the pair of side guides 52a of the second guide 52 to the engaging portion 70 of the twisted portion 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. As a result, the wire W is wound spirally around the reinforcing bar S.

[0167] The control unit 100A stops feeding the wire W in the forward direction and then rotates the torsion motor 80 in the forward direction. By rotating the torsion motor 80 in the forward direction, the actuation unit 71 activates the engagement unit 70, which then holds the tip of the wire W.

[0168] When the control unit 100A determines that the torsion motor 80 has been rotated until the wire W is held by the engagement portion 70, it stops the rotation of the torsion motor 80 and rotates the feed motor 31 in the reverse direction. Once the torsion motor 80 has been rotated until the wire W is held by the engagement portion 70, 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 come into contact with the wire.

[0169] When the feed motor 31 rotates in the reverse direction, the feed gear 30 rotates in the reverse direction, and the wire W is fed in the reverse direction indicated by arrow R. During this reverse feeding operation, the wire W is wrapped tightly around the reinforcing bar S.

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

[0171] After the wire W is cut, the torsion motor 80 continues to rotate in the forward direction, which rotates the engagement part 70 and twists the wire W.

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

[0173] If the control unit 100A determines that the torsion motor 80 has been rotated in the reverse direction until the engagement portion 70 etc. is returned to its initial position, it stops the rotation of the torsion motor 80.

[0174] The operator moves the rebar tying machine 1A in the direction of removing the rebar S, which is tied with wire W, from the insertion / removal opening 53. When the force pressing on the contact portion 91AL of the first contact member 9AL is removed as the rebar tying machine 1A is moved in the direction of removing the rebar S from the insertion / removal opening 53, the force of the spring 95AL causes the first contact member 9AL to move to the standby position. Similarly, when the force pressing on the contact portion 91AR of the second contact member 9AR is removed, the force of the spring 95AR causes the second contact member 9AR to move to the standby position. Furthermore, the force of the biasing member 54 causes the second guide 52 to move from the second position to the first position.

[0175] As the operator moves the rebar tying machine 1A in the direction of removing the rebar S, which is tied with wire W, from the insertion / removal opening 53, the second guide 52 moves to the first position, and the gap between the end 52c of the second guide 52 and the end 51c of the first guide 51B widens. This makes it easier to remove the rebar S from the insertion / removal opening 53 and to move to the next tying location.

[0176] <Examples of the operation and effects of the rebar tying machine of the first embodiment> In the rebar tying machine 1A, the first sensor 312L detects when the first contact member 9AL moves to the operating position, and the second sensor 312R detects when the second contact member 9AR moves to the operating position, and the tying operation is performed. Furthermore, the execution of the tying operation can be switched depending on the orientation of the rebar tying machine 1A. This makes operation easy and reduces the occurrence of malfunctions, even in a configuration where the handles 304hL and 304hR do not have operating parts. Alternatively, the tying operation may be performed by turning on either the first sensor 312L or the second sensor 312R, regardless of the orientation of the rebar tying machine 1A.

[0177] In a configuration where the first contact portion 13L and the second contact portion 13R are attached to the second main body portion 302, and the first contact member 9AL and the second contact member 9AR are movably supported on the second main body portion 302, the tolerance between the mounting positions of the first contact portion 13L and the second contact portion 13R and the mounting positions of the first contact member 9AL and the second contact member 9AR may become large. In such a case, when the reinforcing bar S is abutting against the first contact portion 13L or the second contact 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 binding operation cannot be performed.

[0178] Therefore, in the rebar tying machine 1A, the first contact member 9AL and the second contact member 9AR are movably supported in a cover guide section 11 equipped with a first contact portion 13L and a second contact portion 13R. As a result, the amount of movement of the first contact member 9AL and the second contact member 9AR is defined by the cover guide section 11, so that the amount of movement of the first contact member 9AL and the second contact member 9AR as they abut against the rebar S before the rebar S abuts against the first contact portion 13L or the second contact portion 13R can be set to a predetermined range. Thus, the first contact member 9AL and the second contact member 9AR can be reliably moved to their operating positions.

[0179] Furthermore, since the cover guide portion 11 is integrally formed by a connecting portion 11U, with 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, the positional accuracy between the first contact member 9AL and the second contact member 9AR can be improved.

[0180] 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 upper surface of the second main body portion 302, between the base end of the first guide 51A and the base end of the second guide 52. Since the cover guide portion 11 is made of metal, while the second main body portion 302 is made of resin, wear and damage to the second main body portion 302 can be reduced even if the reinforcing bar S comes into contact with it.

[0181] The first guide recess 14L1, the second guide recess 14L2, and the third guide recess 14L3, which guide the movement of the first contact member 9AL, and the spring 95AL, which biases the first contact member 9AL, are arranged coaxially Bx along the direction of movement of the first contact member 9AL. This prevents the first contact member 9AL from tilting when a force is applied that would cause it to tilt relative to the direction of movement, and ensures reliable operation of the first contact member 9AL. In particular, the first contact member 9AL, which has moved to the operating position, can be reliably moved back to the standby position by the spring 95AL. The same applies to the second contact member 9AR.

[0182] Furthermore, when the first cover portion 12L is attached to the first side wall portion 11L, 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 composed of an uneven shape rather than an opening, there is no large opening on the side of the first cover portion 12L. This prevents dust and debris from entering the mechanism that guides the movement of the first contact member 9AL, and ensures that the first contact member 9AL operates reliably.

[0183] Furthermore, when the second cover portion 12R is attached to the second side wall portion 11R, 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 composed of an uneven shape rather than an opening, there is no large opening on the side of the second cover portion 12R. This prevents dust and debris from entering the mechanism that guides the movement of the second contact member 9AR, and ensures that the second contact member 9AR operates reliably.

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

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

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

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

[0188] The link portion 96 is attached to the cover guide portion 11 via the shaft 96A. This suppresses the increase in tolerance between the mounting position of the link portion 96 and the mounting positions of the first contact member 9AL and the second contact member 9AR. In contrast, the second guide 52 is attached to the second main body portion 302. Therefore, it is susceptible to the tolerance between the link portion 96 and the second guide 52. To address this, in the connecting portion 98, the opening 98B into which the operating shaft 98A enters is made larger than the operating shaft 98A, thereby increasing the rotatable range of the link portion 96 with the shaft 96A as the pivot point compared to the rotatable range of the second guide 52. This ensures that the first contact member 9AL and the second contact member 9AR can be reliably moved to the operating position and detected by the first sensor 312L and the second sensor 312R.

[0189] Furthermore, the axis of rotation is located at different positions in the second guide 52 and the link portion 96. Therefore, by allowing the operating axis 98A to move along the receiving portion 56, the amount of rotation of the second guide 52 can be appropriately adjusted in relation to the amount of movement of the first contact member 9AL and the second contact member 9AR.

[0190] The first contact member 9AL and the second contact member 9AR are independent components and can operate independently of each other. Furthermore, the first sensor 312L, which detects the first contact member 9AL, and the second sensor 312R, which detects the second contact member 9AR, are also independent, allowing for independent detection of the movements of the first contact member 9AL and the second contact member 9AR. This enables various settings for the rebar tying machine 1A to be configured through combinations of the movements of the first contact member 9AL and the second contact member 9AR. For example, when the orientation detection sensor 350 (350A, 350B) is disabled, the control unit 100A does not perform the tying operation, but instead allows for configuration of the rebar tying machine 1A through combinations of the movements of the first contact member 9AL and the second contact member 9AR.

[0191] Figure 20 is a perspective view showing an example of the operation and effect of the sensor substrate unit. In the sensor substrate unit 311, the first sensor 312L and the second sensor 312R are mounted on the same substrate 313. The substrate 313 is housed in the first opening 315 of the 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, any excess resin flows through the groove 317 to the second opening 316, and the first opening 315 is sealed with an appropriate amount of resin.

[0192] Figure 21 is a perspective view showing an example of a rebar tying machine according to the second embodiment. In the rebar tying machine 1B of the second embodiment, a guide section 5B equipped with a first guide 51B and a second guide 52B is provided on one side of the main body 10. On the other side of the main body 10 of the rebar tying machine 1B, a handle section 10h is provided in a manner that protrudes, and a trigger 10t that receives the operation to activate the rebar tying machine 1B is provided on the front side of the handle section 10h.

[0193] The rebar tying machine 1B includes the first contact member 9AL and the second contact member 9AR described above, and a cover guide section 11 to which the first contact member 9AL and the second contact member 9AR are movably attached. It also includes a first cover section 12L and a second cover section 12R that are attached to the cover guide section 11.

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

[0195] In the rebar tying machine 1B, the second guide 52B is biased by a spring (not shown) to be in the second position, and is configured to retract to the first position when an external force is applied.

[0196] Figure 22 is a perspective view showing an example of a rebar tying machine according to the third embodiment. The rebar tying machine 1C of the third embodiment is configured in which the second main body 302 of the rebar tying machine 1A of the first embodiment is attached to a robot arm 370. [Explanation of Symbols]

[0197] 1A, 1B, 1C... Rebar tying machine, 301... First main body, 302... Second main body, 302L... Side section, 302R... Side section, 302U... Top section, 303... Connecting section, 10... Main body, 10h... Handle section, 10t... Trigger, 2... Storage section, 3... Feeding section, 4... Regulating section, 5A, 5B... Guide section, 51A, 51B... First guide, 52, 52B... Second guide, 53... Insertion / removal port, 54... Biasing member 56...receiving part, 6...cutting part, 7...twisting part, 8...drive part, 9AL...first contact member (moving part), 9AR...second contact member (moving part), 90AL, 90AR...guided part, 91AL, 91AR...contact part, 92AL, 92AR...acting part, 93AL, 93AR...detection part, 94AL1, 94AR1...first guide projection, 94AL2, 94AR2...second guide projection, 94AL3, 94AR3...second 3 Guide protrusion, 94AL4, 94AR4... Spring mounting part, 95AL, 95AR... Spring, 96... Link part (guide movement part), 96A... Shaft, 96L, 96R... Link member, 97L, 97R... Acted part, 98A... Acting shaft, 98B... Opening, 98C... Spring, 11... Cover guide part, 11L... First side wall part, 11R... Second side wall part, 11U... Connection part, 12L... First cover part (cover part), 12R... Second cover section (cover section), 13L...First contact section, 13R...Second contact section, 14L1, 14R1...First guide recess, 14L2, 14R2...Second guide recess, 14L3, 14R3...Third guide recess, 15L1, 15R1...Spring support section, 100A...Control section, 110...Power switch, 111...Operating section, 312L...First sensor, 312R...Second sensor, 350...Orientation detection sensor, W...Wire

Claims

1. The main body and A first guide extending from the main body in a first direction, A second guide is positioned in a second direction perpendicular to the first direction, facing the first guide, and is rotatably mounted on the main body with the first axis as a pivot point, and is movable in a direction approaching and away from the first guide, A movable part located between the first guide and the second guide, which abuts against the object to be bound inserted between the first guide and the second guide and moves along the first direction from a standby position to an operating position, A guide moving part that rotates with respect to a second axis as a pivot point, having an actuated part provided on one radial side of the second axis and in contact with the moving part, and an actuated axis provided on the other side and in contact with the second guide, and a guide moving part that transmits the movement of the moving part to the second guide and moves the second guide, Equipped with, The second guide has a receiving portion that protrudes on the opposite side from the first guide and contacts the working shaft, When the guide moving part moves to the operating position, the moving part pushes and rotates the actuated part, and the actuating shaft pushes the receiving part, thereby moving the second guide in a direction toward the first guide. Binding machine.

2. The first shaft and the second shaft are provided at different positions. The binding machine according to claim 1.

3. The second guide has a facing surface that faces the first guide, and the receiving portion is provided perpendicular to the facing surface. The binding machine according to claim 1.

4. The second guide has an opposing surface facing the first guide, and the receiving portion is provided so as to be inclined with respect to the direction perpendicular to the opposing surface. The binding machine according to claim 1.

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