JP2023075885A - Rebar binding machine, reel, and attachment method - Google Patents

Abstract

To provide a technique capable of detecting the type of a reel while reducing the number of photo-interrupters, and a technique capable of easily adjusting the reel position when attaching the reel to a reel mounting part.SOLUTION: The rebar binding machine includes: a reel including a bobbin and a wire wound on the bobbin; a reel mounting part for mounting the reel in a rotatable manner; a feeding part that feeds out the wire wound on the bobbin around the rebar; a twisting part that twists the wire around the rebar; a type detector that detects the type of the reel; and a supporting part that supports the reel mounting part, the feeding part, the twisting part, and the type detector. The type detector includes a movable member capable of moving relative to the support part. The movable member is arranged in the initial position when the reel is not attached to the reel mounting part. When the reel is attached to the reel mounting part, the movable member is arranged in a mounting position according to the type of reel.SELECTED DRAWING: Figure 26

Description

TECHNICAL FIELD The present invention relates to a reinforcing bar binding machine, a reel, and a mounting method.

Patent Literature 1 discloses a reinforcing bar binding machine. A rebar binding machine includes a reel having a bobbin and a wire wound around the bobbin, a reel attachment part for rotatably attaching the reel, and a feed for feeding the wire wound around the bobbin around the rebar. a twisting part that twists the wire around the reinforcing bar; two photointerrupters that detect the type of reel; there is The bobbin has two annular ribs centered on the axis of the bobbin. The type of reel is detected by each photo interrupter detecting each annular rib while the reel is rotating.

Patent Literature 2 discloses a reinforcing bar binding machine. A rebar binding machine includes a reel having a bobbin and a wire wound around the bobbin, a reel attachment section for attaching the reel, a feeding section for feeding the wire wound around the bobbin around the rebar, a twisting section for twisting the wire fed around the rebar. The bobbin has projections. The reel mounting portion has an opening into which the projection is fitted when the reel is mounted on the reel mounting portion.

Japanese Unexamined Patent Application Publication No. 2017-24908 JP-A-2004-59017

For example, the detection sensitivity of the photointerrupter may be lowered when the photointerrupter is stained with a foreign substance or the like, or when the photointerrupter is irradiated with ambient light. In the reinforcing bar binding machine disclosed in Patent Document 1, if the detection sensitivity of one of the two photointerrupters is lowered, the reel type cannot be detected accurately. Therefore, it is desirable to use a smaller number of photointerrupters.

In the reinforcing bar binding machine disclosed in Patent Literature 2, when attaching the reel to the reel attachment portion, the user first manually adjusts the position of the reel with respect to the reel attachment portion so that the projection fits into the opening. Next, the user brings the reel closer to the reel mounting portion while maintaining the adjusted position of the reel with respect to the reel mounting portion to fit the projection into the opening. Since it takes time and effort to attach the reel to the reel attachment portion, there is a demand for a technique that can easily adjust the position of the reel when attaching the reel to the reel attachment portion.

In this specification, a technique for solving any one of the above problems, that is, a technique capable of detecting the type of reel while reducing the number of photointerrupters, and a technique for attaching the reel to the reel mounting portion To disclose a technique that can easily adjust the position of a reel at times.

A reinforcing bar binding machine disclosed in this specification includes a reel including a bobbin and a wire wound around the bobbin, a reel attachment portion for rotatably attaching the reel, and a wire wound around the bobbin. around the reinforcing bar, a twisting section for twisting the wire around the reinforcing bar, a type detecting section for detecting the type of reel, a reel mounting section, a feeding section, a twisting section, and a type detecting section. and a supporting portion for supporting. The type detection section has a movable member that can move with respect to the support section. The movable member is arranged at the initial position when the reel is not attached to the reel attachment portion. When the reel is attached to the reel attachment portion, the movable member is arranged at an attachment position according to the type of reel.

According to the above configuration, the type of reel is detected based on the position of the movable member. The position of the movable member can be detected using a contact sensor or a non-contact sensor other than a photointerrupter. The type of reel can be detected while reducing the number of photointerrupters.

A reinforcing bar binding machine disclosed in the present specification includes a reel attachment portion for rotatably attaching a reel, which includes a bobbin and a wire wound around the bobbin; a feeding section for feeding around the steel bar, a twisting section for twisting the wire around the reinforcing bar, a type detecting section for detecting the type of reel, a reel mounting section, a feeding section, a twisting section, and a support for supporting the type detecting section and The type detection section has a movable member that can move with respect to the support section. The movable member is arranged at the initial position when the reel is not attached to the reel attachment portion. When the reel is attached to the reel attachment portion, the movable member is arranged at an attachment position according to the type of reel.

According to said structure, there can exist an effect similar to said reinforcing-bar binding machine.

A reel disclosed herein includes a bobbin and a wire wound around the bobbin. The reel is used by being rotatably attached to the reel attachment portion of the reinforcing bar binding machine. The reinforcing bar binding machine includes a type detection section that detects the type of reel, and a support section that supports the reel mounting section and the type detection section. The type detection section has a movable member that can move with respect to the support section. The movable member is arranged at the initial position when the reel is not attached to the reel attachment portion. When the reel is attached to the reel attachment portion, the bobbin moves the movable member to an attachment position according to the reel type.

According to the above configuration, when the reel is attached to the reel attachment portion of the reinforcing bar binding machine, the reel type is detected based on the position of the movable member. The position of the movable member can be detected using a contact sensor or a non-contact sensor other than a photointerrupter. While reducing the number of photointerrupters used in the reinforcing bar binding machine, the reinforcing bar binding machine can detect the type of reel.

A reinforcing bar binding machine disclosed in this specification includes a reel including a bobbin and a wire wound around the bobbin, a reel attachment portion for rotatably attaching the reel, and a wire wound around the bobbin. around the reinforcing bar, a twisting part that twists the wire around the reinforcing bar, a reel mounting part, a sending part, a support part that supports the twisting part, and a rotation that can rotate together with the reel It is provided with a detection magnet, a rotation detection magnetic sensor that is fixed to the support and detects rotation of the rotation detection magnet, and a photointerrupter that detects the shape of the bobbin when the reel rotates. .

According to the above configuration, the rotation detection magnetic sensor detects that the reel has made one rotation by detecting the rotation detection magnet that rotates together with the reel. Also, the photointerrupter detects the shape of the bobbin when the reel rotates. With these, it is possible to detect the shape of the bobbin when the reel rotates once. When the shape of the bobbin differs depending on the type of reel, the type of reel can be detected from the detected shape of the bobbin. Therefore, the reel type can be detected while reducing the number of photointerrupters.

A reinforcing bar binding machine disclosed in the present specification includes a reel attachment portion for rotatably attaching a reel, which includes a bobbin and a wire wound around the bobbin; a feeding section for feeding around the steel bar, a twisting section for twisting the wire around the reinforcing bar, a reel mounting section, a feeding section, a support section for supporting the twisting section, and a rotation detection magnet that can rotate integrally with the reel , a rotation detection magnetic sensor fixed to the support portion for detecting rotation of the rotation detection magnet, and a photointerrupter for detecting the shape of the bobbin when the reel rotates.

According to said structure, there can exist an effect similar to said reinforcing-bar binding machine.

A reel disclosed herein includes a bobbin and a wire wound around the bobbin. The reel is used by being rotatably attached to the reel attachment portion of the reinforcing bar binding machine. The rebar binding machine includes a support section that supports a reel mounting section, a rotation detection magnet that can rotate integrally with the reel, and a rotation detection magnet that is fixed to the support section and detects rotation of the rotation detection magnet. It has a magnetic sensor and a photointerrupter. The bobbin has a shape that is detected by a photointerrupter when the reel rotates.

According to the above configuration, when the reel is attached to the reel attachment portion of the rebar binding machine, the rotation detection magnetic sensor detects the rotation detection magnet that rotates together with the reel, thereby causing the reel to make one rotation. detected. Also, when the reel is rotating, the shape of the bobbin is detected by the photointerrupter. These allow the rebar binding machine to detect the shape of the bobbin when the reel rotates once. When the shape of the bobbin differs depending on the type of reel, the type of reel can be detected by the reinforcing bar binding machine based on the detected shape of the bobbin. Therefore, the reinforcing bar binding machine can detect the type of reel while reducing the number of photo interrupters used in the reinforcing bar binding machine.

A reinforcing bar binding machine disclosed in the present specification includes a reel having a bobbin and a wire wound around the bobbin, a first portion, a reel attachment portion for attaching the reel, and a bobbin. a feeding section for feeding the wire wound around the reinforcing bar; and a twisting section for twisting the wire fed around the reinforcing bar. One of the bobbin and the wire includes reel information that is detected by the reinforcing bar binding machine when the reel is attached to the reel attachment portion, and has an information portion corresponding to the first portion. ing. When the reel is attached to the reel attachment portion, the reel is rotatable around the rotation axis. One of the reel and the reel mounting portion has a rib. The other of the reel and the reel mounting portion has a guide for guiding the rib so that the information portion overlaps the first portion in the direction along the rotation axis of the reel when the reel is mounted on the reel mounting portion along the rotation axis of the reel. It has

According to the above configuration, when the user attaches the reel to the reel attachment portion, the guide guides the rib, so that the information portion overlaps the first portion in the direction along the rotation axis of the reel. Therefore, the position of the reel with respect to the reel mounting portion can be easily adjusted when the reel is mounted on the reel mounting portion.

A reel disclosed in the present specification is used by being attached to a reel attachment portion of a reinforcing bar binding machine. The reel has a bobbin and a wire wound around the bobbin. One of the bobbin and the wire has an information portion containing reel information, which is detected by the rebar binding machine when the reel is attached to the reel attachment portion. The bobbin has ribs or guides to align the information portion in place with respect to the reel mount.

Where the reel mounting portion of the rebar tying machine is provided with a corresponding structure, and the corresponding structure guides the ribs or is guided by the guides so as to align the information portion in place with respect to the reel mounting portion. Then, when the user attaches the reel to the reel mounting portion, the information portion is attached to the reel mounting portion by guiding the rib of the reel to the corresponding structure or by guiding the guide of the reel to the corresponding structure. Aligned in place. Therefore, the position of the reel with respect to the reel mounting portion can be easily adjusted when the reel is mounted on the reel mounting portion.

The attachment method disclosed in this specification is a method of attaching a reel to a reel attachment portion of a reinforcing bar binding machine that binds reinforcing bars with a wire. The reel has an information portion containing reel information and is rotatable about an axis of rotation when attached to the reel mount. The reel mount has a first portion corresponding to the information portion. One of the reel and the reel mounting portion has a rib. The other of the reel and the reel attachment has a guide. The mounting method is to insert the reel into the reel mounting portion in the first direction while moving the rib along the guide, thereby rotating the reel about the rotation axis of the reel with respect to the reel mounting portion, thereby removing the information portion. , an alignment step of aligning the information portion with the first portion in a direction along the rotation axis of the reel; and an approaching step of approaching the

According to the above configuration, when the user inserts the reel into the reel mounting portion in the first direction, the rib moves along the guide, so that the information portion moves along the rotation axis of the reel to the first portion. overlaps with Therefore, the position of the reel with respect to the reel mounting portion can be easily adjusted when the reel is mounted on the reel mounting portion.

A reinforcing bar binding machine disclosed in the present specification includes a reel including a bobbin and a wire wound around the bobbin, a reel attachment portion for attaching the reel, and a reel attached to the reel attachment portion. A reel information detection unit for detecting information on a reel at times, a sending unit for sending the wire wound around the bobbin around the reinforcing bar, a twisting unit for twisting the wire sent around the reinforcing bar, and a reel. an alignment unit for rotating the reel around the rotation axis of the reel with respect to the reel mounting unit and aligning the reel with the reel information detection unit when the reel is mounted on the reel mounting unit. .

According to the above configuration, when the user attaches the reel to the reel mounting portion, the positioning portion rotates the reel about the rotation axis of the reel with respect to the reel mounting portion. is aligned in a predetermined position with respect to the Therefore, it is possible to easily adjust the position of the reel with respect to the reel information detection section when attaching the reel to the reel attachment section.

It is the perspective view which looked at the reinforcement binding machine 2 of 1st Example from the back left upper part. It is the perspective view which looked at the reinforcement binding machine 2 of 1st Example from the front right upper part. It is a side view which shows the internal structure of the reinforcing-bar binding machine 2 of 1st Example. 4 is a perspective view of the feeding section 38 of the first embodiment; FIG. FIG. 2 is a perspective view of a feeding unit 38 and a reel holder 10 of the first embodiment; Fig. 2 is a cross-sectional view near the front upper portion of the reinforcing bar binding machine 2 of the first embodiment; FIG. 4 is a side view showing a state before the first lever member 76 and the second lever member 78 rotate in the cutting portion 44 of the first embodiment; 8 is a side view showing a state after the first lever member 76 and the second lever member 78 are rotated in the cutting portion 44 of the first embodiment; FIG. 4 is a perspective view of the twisted portion 46 of the first embodiment; FIG. FIG. 4 is a cross-sectional view of a torsion motor 86, a deceleration section 88, and a holding section 90 of the first embodiment; 3 is an exploded perspective view of carrier sleeve 98, clutch plate 100, and screw shaft 102 of the first embodiment. FIG. 4 is a perspective view of the clamp shaft 110 of the first embodiment; FIG. 4 is a perspective view of the twisted portion 46 of the first embodiment, in which a right clamp 112 and a left clamp 114 are attached to a clamp shaft 110. FIG. Fig. 2 is a perspective view of the right clamp 112 of the first embodiment; FIG. 4 is a perspective view of the left clamp 114 of the first embodiment; 3 is a perspective view of a torsion motor 86, a deceleration section 88, and a holding section 90 of the first embodiment; FIG. 4 is a perspective view of the rotation restricting portion 92 of the first embodiment; FIG. FIG. 2 is a sectional view of the reel holder 10 and the reel 33 of the first embodiment; 4 is a perspective view of the bobbin 160 of the reel 33 of the first embodiment; FIG. 2 is a perspective view of the reel holder 10 of the first embodiment with the main cover 28 removed. FIG. 3 is a perspective view of the reel holder 10 of the first embodiment with the auxiliary cover 30 removed. FIG. FIG. 3 is a perspective view of the right reel mounting portion 190 and the type detection device 220 of the first embodiment; 2 is an exploded perspective view of a turntable 198 and a kind detection device 220 of the first embodiment; FIG. 4 is a perspective view of the right reel mounting portion 190 and the support member 228 of the first embodiment; FIG. It is the figure which looked at the reel 33 of 1st Example, the kind detection part 158, and the right side reel attachment part 190 from the upper side. FIG. 4 is a cross-sectional view of the reel 33, the type detecting portion 158, and the right reel mounting portion 190 of the first embodiment; 4 is a signal chart detected by the type detection magnetic sensor 222 and the rotation detection magnetic sensor 248 of the first embodiment; FIG. 11 is a perspective view of a right reel mounting portion 190 and a type detection device 220 of the second embodiment; It is the figure which looked at the reel 33 of 2nd Example, the kind detection part 158, and the right side reel attachment part 190 from the upper side. FIG. 10 is a cross-sectional view of the reel 33, the type detecting portion 158, and the right reel mounting portion 190 of the second embodiment; It is a signal chart which the magnetic sensor for type detection 222 of 2nd Example and the magnetic sensor for rotation detection 248 detect. FIG. 11 is a perspective view of a bobbin 160 of the reel 33 of the third embodiment; FIG. 11 is a perspective view of a holder housing 26, a type detection section 158, and a turntable 198 of the third embodiment; FIG. 14 is a perspective view of the holder housing 26, turntable 198, sensor substrate 344, and photointerrupter 322 of the third embodiment; FIG. 11 is a perspective view of a turntable 198 and a rotation detection magnet 346 of the third embodiment; FIG. 11 is a cross-sectional view of the holder housing 26, the reel 33, and the right reel attachment portion 190 of the third embodiment; FIG. 11 is a cross-sectional view of the holder housing 26, reel 33, right reel mounting portion 190, and photointerrupter 322 of the third embodiment; It is a signal chart detected by a photointerrupter 322 and a rotation detection magnetic sensor 348 of the third embodiment. FIG. 11 is a perspective view of a bobbin 160 of a reel 33 of a fourth embodiment; FIG. 11 is a cross-sectional view of a bobbin 160 of a reel 33 of a fourth embodiment; It is a side view of bobbin 160 of reel 33 of a 4th example. FIG. 14 is a perspective view of a turntable 198 of a fourth embodiment; It is the side view which looked at the turntable 198 of 4th Example from the left side. It is the side view which looked at the turntable 198 of 4th Example from the front side. FIG. 14 is a cross-sectional perspective view of the reel 33 and the turntable 198 with the rib 400 positioned on the inclined surface 416 when the reel 33 is attached to the right reel attachment portion 190 in the fourth embodiment. FIG. 14 is a cross-sectional perspective view of the reel 33 and the turntable 198 with the rib 400 positioned on the first non-inclined surface 412 when the reel 33 is attached to the right reel attachment portion 190 in the fourth embodiment. . FIG. 14 is a sectional view of the reel 33 and the turntable 198 when the reel 33 is attached to the right reel attachment portion 190 in the fourth embodiment;

Below, representative and non-limiting embodiments of the present invention will be described in detail with reference to the drawings. This detailed description is merely intended to provide those skilled in the art with details for implementing a preferred embodiment of the invention, and is not intended to limit the scope of the invention. In addition, the additional features and inventions disclosed below may be used, apart from other features and inventions, to provide further improved rebar tying reels and methods of installation, manufacture and use thereof, or can be used together.

Moreover, any combination of features and steps disclosed in the following detailed description are not required to practice the invention in its broadest sense, but are specifically intended to illustrate representative embodiments of the invention only. is described. Moreover, various features of the exemplary embodiments described above and below, as well as those set forth in the independent and dependent claims, are described herein in providing additional and useful embodiments of the invention. They do not have to be combined in the exact order given or in the order listed.

All features set forth in the specification and/or claims, apart from the configuration of the features set forth in the examples and/or claims, are limitations on the original disclosure and claimed subject matter: They are intended to be disclosed separately and independently of each other. Moreover, all numerical ranges and groupings or populations are intended to disclose configurations intermediate therebetween as limitations on the original disclosure as well as the specific subject matter claimed.

A reinforcing bar binding machine disclosed in this specification includes a reel including a bobbin and a wire wound around the bobbin, a reel attachment portion for rotatably attaching the reel, and a wire wound around the bobbin. around the reinforcing bar, a twisting section for twisting the wire around the reinforcing bar, a type detecting section for detecting the type of reel, a reel mounting section, a feeding section, a twisting section, and a type detecting section. and a supporting portion for supporting. The type detection section has a movable member that can move with respect to the support section. The movable member is arranged at the initial position when the reel is not attached to the reel attachment portion. When the reel is attached to the reel attachment portion, the movable member is arranged at an attachment position according to the type of reel.

In one or more embodiments, the reel mount may comprise a turntable rotatably supported by the support. The bobbin may be secured to the turntable when the reel is attached to the reel attachment.

According to the above configuration, since the turntable is supported by the supporting portion, it is not necessary to attach and detach the turntable to and from the supporting portion. It is possible to suppress the displacement of the rotating shaft of the turntable. As a result, it is possible to suppress the displacement of the rotating shaft of the reel.

In one or more embodiments, the bobbin includes a body around which the wire is wound, a collar located at one end of the body, and a coil extending along the axis of rotation of the reel and outside the outer surface of the collar. and a projection projecting toward the . The turntable may comprise a receiving portion for receiving and engaging the projection.

According to the above configuration, the reel can be fixed to the turntable with a simple configuration.

In one or more embodiments, the projection may urge the movable member from the initial position toward the mounting position when the projection is received in the receiving portion.

According to the above configuration, the movable member can be moved from the initial position to the mounting position by using the projection for mounting the reel on the reel mounting portion.

In one or more embodiments, the movable member may be supported by the turntable for movement between an initial position and a mounted position.

If the movable member is not supported by the turntable and does not rotate together with the reel, the structure of the reel mounting portion becomes complicated. According to the above configuration, it is possible to prevent the structure of the reel mounting portion from becoming complicated.

In one or more embodiments, the type detector is fixed to a type detection magnet fixed to the movable member and to the support, and the type detection magnet is detected to indicate that the movable member is in the mounting position. and a type detection magnetic sensor capable of detecting whether or not.

According to the above configuration, the type-detecting magnetic sensor detects, for example, a change in magnetism caused by the type-detecting magnet, and detects whether or not the movable member is at the mounting position. Compared to the case where a photo interrupter is used, it is possible to detect whether or not the movable member is at the mounting position without being affected by the adhesion of dirt due to foreign matter or the like or by ambient light.

In one or more embodiments, the type detector may further include a biasing member that biases the movable member toward the initial position.

According to the above configuration, the movable member can be returned to the initial position when the reel is removed from the reel mounting portion.

In one or more embodiments, the type detector may further include a rotation detector that detects the rotation angle of the reel.

According to the above configuration, not only the type of reel but also the rotation of the reel can be detected using the type detection section.

In one or more embodiments, the rotation detector is fixed to the rotation detection magnet fixed to the movable member and the support, and detects the rotation angle of the reel by detecting the rotation detection magnet. and a rotation detection magnetic sensor.

According to the above configuration, the rotation detection magnetic sensor detects, for example, magnetic fluctuations caused by the rotation detection magnet, and detects the rotation angle of the reel. Compared to the case where a photointerrupter is used, it is possible to detect the rotation angle of the reel without being affected by the adhesion of foreign matter or the like and by ambient light.

A reinforcing bar binding machine disclosed in this specification includes a reel including a bobbin and a wire wound around the bobbin, a reel attachment portion for rotatably attaching the reel, and a wire wound around the bobbin. around the reinforcing bar, a twisting part that twists the wire around the reinforcing bar, a reel mounting part, a sending part, a support part that supports the twisting part, and a rotation that can rotate together with the reel It is provided with a detection magnet, a rotation detection magnetic sensor that is fixed to the support and detects the rotation of the magnet, and a photointerrupter that detects the shape of the bobbin when the reel rotates.

In one or more embodiments, the bobbin may include a unique feature having a shape that allows the photointerrupter to distinguish the reel from other reels. The unique shape portion may pass between the light emitting portion and the light receiving portion of the photointerrupter as the reel rotates.

According to the above configuration, it is possible to accurately detect the reel type by detecting the unique shape portion passing between the light emitting portion and the light receiving portion of the photointerrupter as the reel rotates.

In one or more embodiments, the feature may comprise a plurality of ribs spaced apart along the direction of rotation of the reel. A counting section may be further provided for counting the number of ribs passing between the light emitting section and the light receiving section of the photointerrupter when the reel rotates.

According to the above configuration, when the number of ribs differs depending on the type of reel, the type of reel can be detected by a simple method of counting the number of ribs.

In one or more embodiments, the reel mount may comprise a turntable rotatably supported by the support. The bobbin may be secured to the turntable when the reel is attached to the reel attachment.

According to the above configuration, since the turntable is supported by the supporting portion, it is not necessary to attach and detach the turntable to and from the supporting portion. It is possible to suppress the displacement of the rotating shaft of the turntable. As a result, it is possible to suppress the displacement of the rotating shaft of the reel.

In one or more embodiments, the rotation detection magnet may be supported by the turntable so as to be rotatable together with the turntable. The rotation detection magnetic sensor may be arranged at a position overlapping at least a portion of the turntable in the direction along the rotation axis of the reel.

According to the above configuration, it is possible to accurately detect the rotation of the reel with a simple configuration.

In one or more embodiments, the bobbin may include protrusions. The turntable may comprise a receiving portion for receiving and engaging the projection.

According to the above configuration, the reel can be fixed to the turntable with a simple configuration.

In one or more embodiments, the photointerrupter may be fixed to the support.

According to the above configuration, even if the reel rotates, the position of the photointerrupter does not change. A photointerrupter can accurately detect the shape of the bobbin.

In one or more embodiments, the photointerrupter may be located farther from the rotation axis of the reel than the rotation detection magnetic sensor.

According to the above configuration, the photointerrupter and the rotation detection magnetic sensor can be arranged side by side in the direction perpendicular to the rotation axis of the reel.

A reinforcing bar binding machine disclosed in the present specification includes a reel having a bobbin and a wire wound around the bobbin, a first portion, a reel attachment portion for attaching the reel, and a bobbin. a feeding section for feeding the wire wound around the reinforcing bar; and a twisting section for twisting the wire fed around the reinforcing bar. One of the bobbin and the wire includes reel information that is detected by the reinforcing bar binding machine when the reel is attached to the reel attachment portion, and has an information portion corresponding to the first portion. ing. When the reel is attached to the reel attachment portion, the reel is rotatable around the rotation axis. One of the reel and the reel mounting portion has a rib. The other of the reel and the reel mounting portion has a guide for guiding the rib so that the information portion overlaps the first portion in the direction along the rotation axis of the reel when the reel is mounted on the reel mounting portion along the rotation axis of the reel. It has

In one or more embodiments, the guide may comprise a first non-inclined surface extending along the axis of rotation of the reel and an inclined surface inclined with respect to the first non-inclined surface. good. The first non-inclined surface may be connected to one end of the inclined surface. The guide may guide the rib from the inclined surface toward the first non-inclined surface when the reel is attached to the reel mount.

According to the above configuration, the simple configuration of guiding the rib from the inclined surface toward the first non-inclined surface makes it possible to easily adjust the position of the reel with respect to the reel mounting portion when the reel is mounted on the reel mounting portion. can.

In one or more embodiments, the information portion may be positioned to overlap the first portion in a direction along the axis of rotation of the reel as the guide guides the rib along the first non-inclined surface. good.

According to the above configuration, after the rib has moved to the first non-inclined surface, the user moves the reel closer to the reel mounting portion along the rotation axis of the reel, thereby moving the information portion in the direction along the rotation axis of the reel. can be brought close to the first part while being superimposed on the first part.

In one or more embodiments, the information portion may comprise protrusions protruding from the bobbin. The first portion may include a receiving portion for receiving the protrusion when the reel is attached to the reel mount. The reel attachment portion may comprise a guide. The length of the first non-inclined surface in the direction along the axis of rotation of the reel may be equal to or greater than the length of the protrusion.

If the length of the first non-inclined surface is shorter than the length of the projection, the projection contacts the reel mounting portion while the rib is moving on the inclined surface, causing the projection to move along the rotation axis of the reel. It cannot be superimposed with the receiving part in the direction. According to the above configuration, it is possible to prevent the projecting portion from overlapping the receiving portion in the direction along the rotation axis of the reel.

In one or more embodiments, the guide may further comprise a second non-inclined surface connected to the other end of the inclined surface and inclined at an acute angle to the inclined surface. The angled surface and the second non-inclined surface may define a corner at the connection point. The corners may be rounded.

For example, in the case where the corner portion has a planar shape, when the rib contacts the corner portion of the guide when the user attaches the reel to the reel mounting portion, the rib cannot move to the inclined surface. According to the above configuration, when the user attaches the reel to the reel attachment portion, even if the rib comes into contact with the rounded corner, the rib can be moved along the corner to the inclined surface.

In one or more embodiments, the first non-inclined surface may extend from the inclined surface to the other end of the reel and reel mount in a direction along the axis of rotation of the reel.

According to the above configuration, the reel can be attached to the reel attachment portion by moving the rib along the first non-inclined surface to the other end of the reel and the reel attachment portion.

In one or more embodiments, the bobbin has a body having an outer peripheral surface around which the wire is wound and an inner peripheral surface opposite the outer peripheral surface and defining an insertion space. may be provided. The reel attachment portion may include an insertion shaft portion that is inserted into the insertion space of the body portion. The rib may be formed on one of the inner peripheral surface of the barrel and the insertion shaft. The guide may be formed on the other of the inner peripheral surface of the barrel and the insertion shaft.

According to the above configuration, the reel can be attached to the reel attachment portion while adjusting the position of the reel with respect to the reel attachment portion by a simple method of inserting the insertion shaft portion into the insertion space of the body portion.

In one or more embodiments, the rebar binding machine may further include a support section that supports the reel attachment section, the feed section, and the twist section. The reel attachment section may include an insertion shaft section and may further include a turntable rotatably supported by the support section.

According to the above configuration, when the user attaches the reel to the reel attachment portion, the turntable rotates when the rib is guided by the guide. This makes it easier to adjust the position of the reel with respect to the reel mounting portion.

In one or more embodiments, the information portion may comprise protrusions protruding from the bobbin. The first portion is located on the turntable and may include a receiving portion for receiving the projection when the reel is mounted on the reel mounting portion.

According to the above configuration, when the reel is attached to the reel attachment portion, it is possible to prevent the projection from being displaced from the receiving portion.

In one or more embodiments, ribs may be formed on the inner peripheral surface of the barrel. The guide may be formed on the insertion shaft.

Ribs usually have a simpler structure than guides. According to the above configuration, the structure of the reel can be simplified.

In one or more embodiments, the ribs may extend along the axis of rotation of the reel.

According to the above configuration, it is possible to increase the strength of the rib in the direction along the rotation axis of the reel. As a result, even if the rib comes into contact with the guide when the reel is attached to the reel attachment portion, damage to the rib can be suppressed.

In one or more embodiments, one of the reel and reel mount may include one or more ribs. The other of the reel and reel mount may include one or more guides. The number of ribs may be less than or equal to the number of guides.

According to the above configuration, it is possible to easily adjust the position of the reel with respect to the reel mounting portion when mounting the reel to the reel mounting portion while reducing the number of ribs.

(First embodiment)
As shown in FIG. 1, the reinforcing bar binding machine 2 binds a plurality of reinforcing bars R using wires W. As shown in FIG. For example, the reinforcing bar binding machine 2 uses wires W to bind thin reinforcing bars R having a diameter of 16 mm or less and large reinforcing bars R having a diameter larger than 16 mm (for example, a diameter of 25 mm or 32 mm). The diameter of the wire W is, for example, between 0.5 mm and 2.0 mm.

As shown in FIG. 1 , the reinforcing bar binding machine 2 includes a main body 4 , a grip 6 , a battery mounting portion 8 , a battery pack B, and a reel holder 10 . The grip 6 is held by an operator. The grip 6 is arranged on the lower rear side of the main body 4 . The grip 6 is integrally formed with the main body 4 . A trigger 12 is provided on the front upper portion of the grip 6 . A trigger switch 14 (see FIG. 3) is arranged inside the grip 6 to detect whether or not the trigger 12 is pushed. The battery mounting portion 8 is arranged below the grip 6 . The battery attachment portion 8 is formed integrally with the grip 6 . The battery pack B can be attached and detached by sliding it with respect to the battery attachment portion 8 . The battery pack B includes, for example, a secondary battery such as a lithium ion battery. The reel holder 10 is arranged in the lower front portion of the main body 4 . The reel holder 10 is arranged on the front side of the grip 6 . In this embodiment, the longitudinal direction of the twisted portion 46, which will be described later, is called the front-rear direction, the direction perpendicular to the front-rear direction is called the vertical direction, and the direction perpendicular to the front-rear direction and the vertical direction is called the left-right direction.

The reinforcing bar binding machine 2 has a housing 16 . The housing 16 forms part of the support portion 15 . As shown in FIG. 2, the housing 16 includes a right housing 18, a left housing 20, and a motor cover 22. As shown in FIG. The right housing 18 defines the shapes of the main body 4 , the grip 6 , and the right half surface of the battery mounting portion 8 . The left housing 20 defines the shape of the main body 4 , the grip 6 , and the left half surface of the battery mounting portion 8 . A motor cover 22 is attached to the outside of the right housing 18 . As shown in FIG. 1 , an operation display section 24 is arranged on the upper rear side of the left housing 20 . The operation display unit 24 includes a main power switch 24a and a main power LED 24b. The main power switch 24 a accepts an operation from the user for switching on/off the main power of the reinforcing bar binding machine 2 . The main power LED 24 b displays the on/off state of the main power of the reinforcing bar binding machine 2 .

As shown in FIG. 2, the reel holder 10 includes a holder housing 26, a main cover 28, and an auxiliary cover 30. As shown in FIG. The holder housing 26 and the auxiliary cover 30 form part of the support section 15 . The holder housing 26 is fixed to the front lower portion of the main body 4 and the front portion of the battery mounting portion 8 . The left end of the holder housing 26 is open. The main cover 28 is attached to the holder housing 26 so as to be rotatable around a rotation shaft 26a in the lower portion of the holder housing 26. As shown in FIG. The main cover 28 is biased in the opening direction by a torsion spring 31 (see FIG. 3). A closed state detection sensor (not shown) is attached to the holder housing 26 to detect that the main cover 28 is closed. Auxiliary cover 30 covers the right surface of holder housing 26 . The auxiliary cover 30 defines an auxiliary space 30 a with the right surface of the holder housing 26 .

As shown in FIG. 1, a lock lever 32 for holding the main cover 28 in a closed state is arranged at the lower front portion of the left housing 20 . When the lock lever 32 is rotated, the main cover 28 is opened with respect to the holder housing 26 by the biasing force of the torsion spring 31 (see FIG. 3). When the main cover 28 is closed, the holder housing 26 and the main cover 28 define an accommodation space 26b (see FIG. 3). A reel 33 (see FIG. 3) having a wire W is arranged in the housing space 26b. As shown in FIG. 2, the front surface of the holder housing 26 is formed with a hole 26c. The user can check the remaining amount of the wire W on the reel 33 by looking at the reel 33 through the hole 26c.

As shown in FIG. 3 , the reinforcing bar binding machine 2 has a control circuit board 36 . The control circuit board 36 is arranged inside the battery mounting portion 8 . The control circuit board 36 is electrically connected to each of the battery pack B, the trigger switch 14, and the operation display section 24 by wiring (not shown). Also, the control circuit board 36 is electrically connected to a closed state detection sensor (not shown) attached to the holder housing 26 by wiring (not shown).

The reinforcing bar binding machine 2 includes a feeding section 38 , a guiding section 40 , a cutting section 44 and a twisting section 46 . The feeding portion 38 is arranged inside the front lower portion of the main body 4 . The guide part 40 is arranged at the front part of the main body 4 . The cutting part 44 is arranged inside the lower part of the main body 4 . The twisted portion 46 is arranged inside the main body 4 .

As shown in FIG. 4, the feed section 38 includes a feed motor 50, a deceleration section 52, and a feed unit . The feed motor 50 is, for example, a brushless motor. The feed motor 50 is arranged on the right side of the right housing 18 (see FIG. 2) and covered with a motor cover 22 (see FIG. 2). The feed motor 50 is electrically connected to the control circuit board 36 by wiring (not shown). The feed motor 50 operates with power supplied from the battery pack B (see FIG. 2).

The deceleration unit 52 has, for example, a planetary gear mechanism. The deceleration unit 52 decelerates the rotation of the feed motor 50 .

The feed unit 54 includes a base member 56 , a guide member 58 , a drive gear 60 , a first feed gear 62 , a second feed gear 64 , a release lever 66 and a compression spring 68 . A guide member 58 is fixed to the base member 56 . The guide member 58 has a guide hole 58a. The guide hole 58a has a tapered shape with a wide lower end and a narrow upper end. A wire W is inserted through the guide hole 58a.

Rotation is transmitted to the driving gear 60 from the speed reducing portion 52 . The first feed gear 62 is rotatably supported by the base member 56 . The first feed gear 62 meshes with the driving gear 60 . The first feed gear 62 rotates as the drive gear 60 rotates. The first feed gear 62 has a groove 62a. The groove 62 a is formed on the outer peripheral surface of the first feed gear 62 in a direction along the rotation direction of the first feed gear 62 . The second feed gear 64 meshes with the first feed gear 62 . The second feed gear 64 is rotatably supported by the release lever 66 . The second feed gear 64 has a groove 64a. The groove 64 a is formed on the outer peripheral surface of the second feed gear 64 in a direction along the rotation direction of the second feed gear 64 . The release lever 66 is swingably supported by the base member 56 via a swing shaft 66a. The compression spring 68 biases the release lever 66 against the right housing 18 (see FIG. 2) in the direction in which the second feed gear 64 approaches the first feed gear 62 . As a result, the second feed gear 64 is pressed against the first feed gear 62 . As a result, the wire W is sandwiched between the groove 62 a of the first feed gear 62 and the groove 64 a of the second feed gear 64 . As shown in FIG. 5 , the lower end of the release lever 66 is pushed by the lock lever 32 and moves toward the right housing 18 when the lock lever 32 rotates in the direction of releasing the holding of the main cover 28 . As a result, the second feed gear 64 separates from the first feed gear 62 . In this state, the user can set the wire W of the reel 33 (see FIG. 4) between the groove 62 a of the first feed gear 62 and the groove 64 a of the second feed gear 64 . As shown in FIG. 2, a window 16a is formed in the front surface of the left housing 20 and the front surface of the motor cover 22 so that the user can visually confirm the meshing position of the first feed gear 62 and the second feed gear 64. .

As shown in FIG. 4, the wire W is moved by rotating the feed motor 50 while the wire W is sandwiched between the groove 62a of the first feed gear 62 and the groove 64a of the second feed gear 64. do. In this embodiment, when the feed motor 50 rotates forward, the drive gear 60 rotates in the direction D1 shown in FIG. When the feed motor 50 rotates in the reverse direction, the drive gear 60 rotates in the direction D2 shown in FIG.

As shown in FIG. 6 , the guide section 40 includes an upper curl guide 70 and a lower curl guide 71 . The upper curl guide 70 and the lower curl guide 71 are arranged in the front part of the main body 4 . The lower end of the upper curl guide 70 opens downward. Thus, the upper curl guide 70 is formed with an upper wire passage 70a. The lower curl guide 71 is arranged below the upper curl guide 70 . The upper end of the lower curl guide 71 opens upward. Thereby, the lower curl guide 71 is formed with a lower wire passage 71a.

The wire W sent from the sending portion 38 (see FIG. 4) is sent to the upper wire passage 70a. The wire W passes through the upper wire passage 70a from the rear to the front. At this time, the wire W is given a downward curl. After passing through the upper wire passage 70a, the wire W is sent to the lower wire passage 71a. The wire W passes through the lower wire passage 71a from the front side toward the rear side. As a result, the wire W is wound around the reinforcing bar R.

As shown in FIG. 7, the cutting section 44 includes a fixed cutter member 72, a movable cutter member 74, a first lever member 76, a second lever member 78, a link member 80, and a torsion spring 82. ing. As shown in FIG. 6 , the fixed cutter member 72 and the movable cutter member 74 are arranged on a path through which the wire W is fed from the feeding section 38 toward the guide section 40 . The fixed cutter member 72 has a hole 72a through which the wire W can pass. The movable cutter member 74 is supported by the fixed cutter member 72 so as to slide and rotate around the fixed cutter member 72 . The movable cutter member 74 has a hole 74a through which the wire W can pass. As shown in FIG. 7, when the hole 72a of the fixed cutter member 72 and the hole 74a of the movable cutter member 74 are in communication (hereinafter also referred to as a communication state), the wire W is connected to the hole 72a of the fixed cutter member 72. It can pass through the hole 74 a of the movable cutter member 74 . From this state, when the movable cutter member 74 rotates relative to the fixed cutter member 72 in the direction D3 shown in FIG. is disconnected by

As shown in FIG. 7, the first lever member 76 and the second lever member 78 are fixed together. The first lever member 76 and the second lever member 78 can swing around the axis RX. The lower end of the first lever member 76 and the lower end of the second lever member 78 are rotatably connected to the rear end of the link member 80 . The front end of the link member 80 is rotatably connected to the lower end of the movable cutter member 74 . A rear end of the link member 80 is biased forward by a torsion spring 82 . When the lower ends of the first lever member 76 and the second lever member 78 swing forward, the link member 80 moves forward and the fixed cutter member 72 and the movable cutter member 74 are brought into communication. As shown in FIG. 8, when the lower ends of the first lever member 76 and the second lever member 78 swing rearward, the link member 80 moves rearward and is movable with the fixed cutter member 72 . The cutter member 74 is in a cutting state.

As shown in FIG. 9 , the torsion section 46 includes a torsion motor 86 , a deceleration section 88 , a holding section 90 and a rotation restricting section 92 . The torsion motor 86 is, for example, a brushless motor. The torsion motor 86 is fixed to the right housing 18 (see FIG. 1) and the left housing 20 (see FIG. 1). The torsion motor 86 is electrically connected to the control circuit board 36 (see FIG. 3) by wiring (not shown). The torsion motor 86 operates with power supplied from the battery pack B (see FIG. 1).

The speed reducer 88 is fixed to the right housing 18 and the left housing 20 . The speed reducer 88 includes, for example, a planetary gear mechanism. A deceleration unit 88 decelerates the rotation of the torsion motor 86 .

As shown in FIG. 10, the holding portion 90 includes a bearing box 96, a carrier sleeve 98, a clutch plate 100, a screw shaft 102, an inner sleeve 104, an outer sleeve 106, a push plate 108 and a clamp shaft 110. , a right clamp 112 and a left clamp 114 .

A bearing box 96 is fixed to the reduction section 88 . The bearing box 96 rotatably supports the carrier sleeve 98 via bearings 96a. Rotation is transmitted to the carrier sleeve 98 from the reduction section 88 . When the torsion motor 86 rotates forward, the carrier sleeve 98 rotates in the left-hand direction as viewed from the rear. When the torsion motor 86 rotates in the reverse direction, the carrier sleeve 98 rotates in the direction of right-hand threads as viewed from the rear.

As shown in FIG. 11, the inner surface of the rear portion of the carrier sleeve 98 is formed with a clutch groove 98a extending in the front-rear direction. A first wall portion 98b and a second wall portion 98c are formed at the front end of the clutch groove 98a. The longitudinal distance from the rear end of the carrier sleeve 98 to the first wall portion 98b is smaller than the longitudinal distance from the rear end of the carrier sleeve 98 to the second wall portion 98c. A clutch plate 100 is positioned inside the carrier sleeve 98 . The clutch plate 100 is formed with clutch pieces 100a corresponding to the clutch grooves 98a. The clutch plate 100 is biased rearwardly against the carrier sleeve 98 by a compression spring 116 located inside the carrier sleeve 98 . The clutch plate 100 can move forward with respect to the carrier sleeve 98 to a position where the clutch piece 100a contacts the first wall portion 98b of the clutch groove 98a. When the wire W is twisted, the carrier sleeve 98 rotates with respect to the clutch plate 100 in a left-handed direction as seen from the rear side. can move forward to a position where it abuts on the second wall portion 98c.

A rear portion 102 a of the screw shaft 102 is inserted into the carrier sleeve 98 from the front side and fixed to the clutch plate 100 . A radially projecting flange 102c is formed between the rear portion 102a and the front portion 102b of the screw shaft 102 . A spiral ball groove 102d is formed on the outer peripheral surface of the front portion 102b of the screw shaft 102 . The front end of the screw shaft 102 is formed with an engaging portion 102e having a smaller diameter than the front portion 102b.

As shown in FIG. 10, a compression spring 118 is attached to the front portion 102b of the screw shaft 102. As shown in FIG. A front portion 102b of the screw shaft 102 is inserted into the inner sleeve 104 from the rear side. A ball hole 104 a for holding the ball 120 is formed in the inner sleeve 104 . Ball 120 fits into ball groove 102 d of screw shaft 102 . A radially projecting flange 104 b is formed at the rear end of the inner sleeve 104 . The inner sleeve 104 is inserted into the outer sleeve 106 from the rear side. Outer sleeve 106 is fixed to inner sleeve 104 . When the rotation of the outer sleeve 106 is permitted by the rotation restricting portion 92 (see FIG. 17), the inner sleeve 104 and the outer sleeve 106 rotate integrally when the screw shaft 102 rotates. When the rotation of the outer sleeve 106 is prohibited by the rotation restricting portion 92 , the inner sleeve 104 and the outer sleeve 106 move forward and backward with respect to the screw shaft 102 when the screw shaft 102 rotates. Specifically, when the torsion motor 86 rotates forward and the screw shaft 102 rotates in the left-hand direction as viewed from the rear, the inner sleeve 104 and the outer sleeve 106 move forward with respect to the screw shaft 102. . When the torsion motor 86 rotates in the reverse direction and the screw shaft 102 rotates in the right-hand direction as viewed from the rear, the inner sleeve 104 and the outer sleeve 106 move rearward with respect to the screw shaft 102 . The push plate 108 is arranged between the rear end of the outer sleeve 106 and the flange 104b of the inner sleeve 104. As shown in FIG. Therefore, when the inner sleeve 104 and the outer sleeve 106 move in the front-rear direction, the push plate 108 also moves in the front-rear direction. A slit 106 a extending rearward from the front end of the outer sleeve 106 is formed in the front portion of the outer sleeve 106 .

The clamp shaft 110 is inserted into the inner sleeve 104 from the front side. An engaging portion 102 e of the screw shaft 102 is inserted into the rear end of the clamp shaft 110 . A clamp shaft 110 is fixed to the screw shaft 102 . As shown in FIG. 12, the clamp shaft 110 is formed with a flat plate portion 110a, an opening 110b, and a flange 110c. The flat plate portion 110a is arranged at the front end of the clamp shaft 110 and has a flat plate shape along the vertical direction and the front-rear direction. A hole 110d into which a pin 122 (see FIG. 13) is fitted is formed in the flat plate portion 110a. The opening 110b is arranged on the rear side of the flat plate portion 110a. The opening 110b penetrates the clamp shaft 110 in the left-right direction and extends in the front-rear direction. The flange 110c is arranged on the rear side of the opening 110b and protrudes radially.

As shown in FIG. 13, the right clamp 112 is attached to the clamp shaft 110 so as to pass through the opening 110b of the clamp shaft 110 from right to left. The left clamp 114 is attached to the clamp shaft 110 below the right clamp 112 so as to pass through the opening 110b of the clamp shaft 110 from left to right.

As shown in FIG. 14, the right clamp 112 includes a base portion 112a, a lower protruding portion 112b, an upper protruding portion 112c, a contact portion 112d, an upper guard portion 112e, and a front guard portion 112f. ing. The base portion 112a has a flat plate shape extending in the front-rear direction and the left-right direction. The lower protruding portion 112b is arranged at the right end of the base portion 112a and protrudes downward from the base portion 112a. The upper protruding portion 112c is arranged at the right front end of the base portion 112a and protrudes upward from the base portion 112a. The contact portion 112d protrudes leftward from the upper end of the upper protruding portion 112c. The upper guard portion 112e protrudes leftward from the upper end of the contact portion 112d. The front guard portion 112f protrudes leftward from the front ends of the upper projecting portion 112c and the contact portion 112d. Cam holes 112g and 112h are formed in the base portion 112a. The cam holes 112g and 112h have a shape extending from the rear end to the front end, first extending forward, then bending to extend to the front right side, and further bent to extend to the front side.

As shown in FIG. 15, the left clamp 114 includes a base portion 114a, a pin holding portion 114b, a lower projecting portion 114c, a contact portion 114d, a rear guard portion 114e, and a front guard portion 114f. I have. The base portion 114a has a flat plate shape along the front-rear direction and the left-right direction. The pin holding portion 114b is arranged at the left front end of the base portion 114a, and slidably holds the pin 122 (see FIG. 13) above the base portion 114a. The lower protruding portion 114c is arranged at the left front end of the base portion 114a and protrudes downward from the base portion 114a. The contact portion 114d protrudes rightward from the lower end of the lower projecting portion 114c. The rear guard portion 114e protrudes rightward from the rear end of the contact portion 114d. The front guard portion 114f protrudes rightward from the front end of the contact portion 114d. Cam holes 114g and 114h are formed in the base portion 114a. The cam holes 114g and 114h extend from the rear end to the front end, first extending forward, then bending and extending toward the front left side, then bending and extending toward the front side, further bending and extending toward the front left side. After extending to the side, it has a shape that bends and extends toward the front side.

As shown in FIG. 13, when the right clamp 112 and the left clamp 114 are attached to the clamp shaft 110, the cam sleeve 124 is arranged to pass through the cam holes 112g and 114g, and the cam sleeve 126 It is arranged so as to pass through the hole 112h and the cam hole 114h. Also, a support pin 128 is arranged to pass through the cam sleeve 124 and a support pin 130 is arranged to pass through the cam sleeve 126 . An annular cushion 131 is attached between the right clamp 112 , the left clamp 114 and the flange 110 c of the clamp shaft 110 .

As shown in FIG. 9, when the clamp shaft 110 is attached to the inner sleeve 104, the right clamp 112 and the left clamp 114 are inserted into the slit 106a of the outer sleeve 106, and the support pins 128 and 130 are connected to the outer sleeve 106. be done. When the clamp shaft 110 moves back and forth with respect to the outer sleeve 106, the cam sleeve 124 attached to the support pin 128 moves back and forth within the cam holes 112g and 114g, and the cam sleeve 126 attached to the support pin 130 moves back and forth. moves in the front-rear direction in the cam holes 112h and 114h, the right clamp 112 and the left clamp 114 move in the left-right direction.

As shown in FIG. 13 , in the initial state where the clamp shaft 110 protrudes forward from the outer sleeve 106 , the right clamp 112 is positioned rightmost with respect to the left clamp 114 . In this state, a right wire passage 132 through which the wire W can pass is formed between the upper projecting portion 112c of the right clamp 112 and the flat plate portion 110a of the clamp shaft 110, and the upper side of the right wire passage 132 is the upper guard portion. 112e. This state of the right clamp 112 is called the fully open state. From this state, when the outer sleeve 106 moves forward with respect to the clamp shaft 110 , the right clamp 112 moves leftward toward the clamp shaft 110 . In this state, the wire W is clamped between the lower end of the contact portion 112d of the right clamp 112 and the upper end of the flat plate portion 110a of the clamp shaft 110, and the front side of the right wire passage 132 is covered by the front guard portion 112f. will be This state of the right clamp 112 is called a fully closed state.

In the initial state where the clamp shaft 110 protrudes forward from the outer sleeve 106 , the left clamp 114 is positioned on the leftmost side with respect to the clamp shaft 110 . In this state, a left wire passage 134 through which the wire W can pass is formed between the lower projecting portion 114c of the left clamp 114 and the flat plate portion 110a of the clamp shaft 110. As shown in FIG. This state of the left clamp 114 is called the fully open state. From this state, when the outer sleeve 106 moves forward with respect to the clamp shaft 110 , the left clamp 114 moves rightward toward the clamp shaft 110 . Even in this state, the wire W can pass through the left wire passage 134, but the rear side of the left wire passage 134 is covered by the rear guard portion 114e, and the front side of the left wire passage 134 is covered by the front guard portion 114f. . This state of the left clamp 114 is called a half-open state. From this state, when the outer sleeve 106 moves further forward with respect to the clamp shaft 110 , the left clamp 114 moves further rightward toward the clamp shaft 110 . In this state, the wire W is clamped between the upper end of the contact portion 114 d of the left clamp 114 and the lower end of the flat plate portion 110 a of the clamp shaft 110 . This state of the left clamp 114 is called a fully closed state.

The wire W fed from the feeding portion 38 (see FIG. 6) to the guide portion 40 (see FIG. 6) passes through the left wire passage 134 before reaching the guide portion 40 . Therefore, when the left clamp 114 is fully closed and the wire W is cut by the cutting part 44 (see FIG. 6), the wire W wound around the reinforcing bar R is cut by the left clamp 114 and the clamp shaft 110. Termination is retained.

Also, the wire W guided by the guide portion 40 passes through the right wire passage 132 . Therefore, when the right clamp 112 is fully closed, the tip of the wire W wound around the reinforcing bar R is held by the right clamp 112 and the clamp shaft 110 .

As shown in FIG. 16, fins 138 are formed on the rear outer surface of the outer sleeve 106 . The fins 138 extend in the front-rear direction. In this embodiment, eight fins 138 are arranged at intervals of 45 degrees on the outer peripheral surface of the outer sleeve 106 . Also, in this embodiment, the eight fins 138 include seven short fins 138a and one long fin 138b. The length of the long fins 138b in the front-rear direction is longer than the length of the short fins 138a in the front-rear direction. In the front-rear direction, the positions of the rear ends of the long fins 138b are the same as the positions of the rear ends of the short fins 138a. In the front-rear direction, the front ends of the long fins 138b are located forward of the front ends of the short fins 138a.

The rotation restricting portion 92 is arranged at a position corresponding to the fins 138 of the outer sleeve 106 . Rotation restricting portion 92 cooperates with fin 138 to permit or prohibit rotation of outer sleeve 106 . As shown in FIG. 17, the rotation restricting portion 92 includes a base member 140, an upper stopper 142, a lower stopper 144, and torsion springs 146 and 148. As shown in FIG. The base member 140 is fixed to the right housing 18 (see FIG. 1). The upper stopper 142 is swingably supported above the base member 140 via a swing shaft 140a. The upper stopper 142 has a restricting piece 142a. The restricting piece 142 a is positioned below the upper stopper 142 . The torsion spring 146 biases the restricting piece 142a in the direction of opening outward (ie, the direction in which the restricting piece 142a separates from the base member 140). The lower stopper 144 is swingably supported by the lower portion of the base member 140 via a swing shaft 140b. The lower stopper 144 has a restricting piece 144a. The restricting piece 144 a is positioned above the lower stopper 144 . The rear end of the regulation piece 144a is arranged forward of the rear end of the regulation piece 142a. The torsion spring 148 biases the restricting piece 144a in the direction of opening outward (ie, the direction in which the restricting piece 144a separates from the base member 140).

With respect to the upper stopper 142, when the torsion motor 86 (see FIG. 10) rotates forward and the screw shaft 102 (see FIG. 10) rotates in the direction of the left screw when viewed from the rear side, the fins 138 (see FIG. 10) of the outer sleeve 106 16) contacts the restricting piece 142a, the upper stopper 142 prohibits the outer sleeve 106 from rotating. On the other hand, when the torsion motor 86 rotates in the reverse direction and the screw shaft 102 rotates in the right-hand direction as seen from the rear side, the fin 138 of the outer sleeve 106 comes into contact with the restricting piece 142a and pushes the restricting piece 142a. . In this case, the upper stopper 142 does not prohibit the outer sleeve 106 from rotating.

With respect to the lower stopper 144, when the torsion motor 86 rotates forward and the screw shaft 102 rotates in the direction of the left screw as viewed from the rear side, the fins 138 of the outer sleeve 106 are in contact with the restricting piece 144a, but are still restricted. Push in piece 144a. In this case, lower stopper 144 does not prohibit rotation of outer sleeve 106 . On the other hand, when the screw shaft 102 rotates in the right-hand direction as viewed from the rear, the fin 138 of the outer sleeve 106 abuts against the restricting piece 144a, and the rotation of the outer sleeve 106 is prohibited by the lower stopper 144 .

Next, the operation of the reinforcing bar binding machine 2 shown in FIG. 1 will be described. The reinforcing bar binding machine 2 performs a binding operation when the trigger 12 is operated by the operator. When the reinforcing bar binding machine 2 performs the binding operation, a sending process, a leading end holding process, a pulling back process, an end holding process, a cutting process, a twisting process, and a returning process are executed.

(Sending process)
When the feed motor 50 shown in FIG. 4 rotates forward (that is, rotates in the direction D1 shown in FIG. 4) from the initial state of the reinforcing bar binding machine 2, the feed unit 38 feeds the wire W from the reel 33 by a predetermined length. . The tip of the wire W passes through the fixed cutter member 72, the movable cutter member 74, the left wire passage 134, the guide portion 40, and the right wire passage 132 in this order. As a result, the wire W is wound around the reinforcing bar R in an annular shape. When the feeding of the wire W is completed, the feeding motor 50 is stopped.

(Tip holding step)
When the torsion motor 86 shown in FIG. 10 rotates in the normal direction after the delivery process is completed, the screw shaft 102 rotates in the left-hand direction. At this time, the outer sleeve 106 is prohibited from rotating in the left-hand direction by the rotation restricting portion 92 . Therefore, the outer sleeve 106 moves forward with the inner sleeve 104 with respect to the clamp shaft 110, the right clamp 112 is fully closed, and the left clamp 114 is half-opened. Thereby, the tip of the wire W is held by the right clamp 112 and the clamp shaft 110 . When it is detected that the tip of the wire W is held, the torsion motor 86 is stopped.

(Retraction process)
After the end of the leading end holding step, when the feed motor 50 shown in FIG. 4 rotates in the reverse direction (that is, rotates in the direction D2 shown in FIG. 4), the feed section 38 pulls back the wire W wound around the reinforcing bar R. . Since the tip of the wire W is held by the right clamp 112 and the clamp shaft 110, the diameter of the wire W around the reinforcing bar R is reduced. When the wire W is completely pulled back, the feed motor 50 stops.

(End holding process)
After the pullback process is completed, when the torsion motor 86 shown in FIG. 10 rotates forward, the screw shaft 102 rotates in the left-hand direction. At this time, the outer sleeve 106 is prohibited from rotating in the left-hand direction by the rotation restricting portion 92 . Therefore, the outer sleeve 106 moves forward together with the inner sleeve 104 with respect to the clamp shaft 110, and the left clamp 114 is fully closed. The end of the wire W is thereby held by the left clamp 114 and the clamp shaft 110 .

(Cutting process)
When the torsion motor 86 shown in FIG. 10 further rotates forward after the terminal end holding process is completed, the screw shaft 102 rotates in the left-hand direction. At this time, the outer sleeve 106 is prohibited from rotating in the left-hand direction by the rotation restricting portion 92 . Therefore, the outer sleeve 106 further advances with respect to the clamp shaft 110 together with the inner sleeve 104, and as shown in FIG. 8, the push plate 108 pushes down the upper end of the second lever member 78 forward. Thereby, the wire W is cut by the fixed cutter member 72 and the movable cutter member 74 . When the cutting of the wire W is completed, the torsion motor 86 is stopped.

(Twisting process)
After the cutting process is finished, when the torsion motor 86 shown in FIG. 10 further rotates forward, the screw shaft 102 rotates in the left-hand direction. At this time, the outer sleeve 106 is allowed to rotate in the left-hand direction by the rotation restricting portion 92 . Therefore, the outer sleeve 106, the inner sleeve 104, the clamp shaft 110, the right clamp 112, and the left clamp 114 rotate together in the left-hand direction. As a result, the wire W wound around the reinforcing bar R is twisted. When the twisting of the wire W is completed, the twisting motor 86 is stopped.

(recovery process)
After the twisting process is completed, when the twisting motor 86 shown in FIG. 10 rotates in the reverse direction, the screw shaft 102 rotates rightward. At this time, the outer sleeve 106 is prohibited from rotating in the right-hand direction by the rotation restricting portion 92 . Therefore, the outer sleeve 106 retreats with respect to the clamp shaft 110 together with the inner sleeve 104 . The left clamp 114 goes through the half-opened state and goes into the fully open state, and the right clamp 112 goes into the fully open state. After that, when the right-handed rotation is permitted by the rotation limiter 92, the outer sleeve 106, the inner sleeve 104, the clamp shaft 110, the right clamp 112, and the left clamp 114 rotate together in the right-handed direction. do. When the long fins 138b contact the lower stopper 144, the rotation of the outer sleeve 106 is prohibited again, and the outer sleeve 106 retreats together with the inner sleeve 104 with respect to the clamp shaft 110 again. When it is detected that the torsion portion 46 has returned to its initial state, the torsion motor 86 is stopped.

In the reinforcing bar binding machine 2, wires W of various thicknesses are selected according to the diameter of the reinforcing bars R used. A wire W covered with a covering (for example, a resin material) or a wire W plated is selected according to the environment in which the reinforcing bar R is used. The types of reels 33 (see FIG. 18) are distinguished according to the thickness of the wire W, the presence or absence of a coating, and the presence or absence of plating. For this reason, the reinforcing bar binding machine 2 includes a type detection unit 158 (see FIG. 18) for detecting the type of the reel 33. As shown in FIG.

First, the reel 33 will be explained. As shown in FIG. 18, the reel 33 is arranged in the accommodation space 26b of the reel holder 10. As shown in FIG. The reel 33 is supported by the reel holder 10 so as to be rotatable around a rotation axis AX extending in the left-right direction. The reel 33 includes a bobbin 160 and a wire W. A central axis of the bobbin 160 is equal to the rotation axis AX of the reel 33 .

As shown in FIG. 19 , the bobbin 160 includes a body portion 162 , a pair of collar portions 164 and 166 , and a plurality of (six in this embodiment) projections 168 . Below, the pair of collars 164 and 166 may be referred to as a left collar 164 and a right collar 166, respectively. The trunk portion 162, the pair of flange portions 164 and 166, and the six protrusions 168 are made of, for example, a resin material. The body portion 162, the pair of collar portions 164 and 166, and the six protrusions 168 are integrally formed.

The trunk portion 162 includes an outer tubular portion 170 , an inner tubular portion 172 and a connecting portion 174 . The outer tubular portion 170 and the inner tubular portion 172 have a substantially cylindrical shape. A wire W (see FIG. 18) is wound in multiple layers around the outer peripheral surface of the outer tubular portion 170 . The inner tubular portion 172 is arranged inside the outer tubular portion 170 . As shown in FIG. 18, an engaging groove 172a is formed at the right end of the inner peripheral surface of the inner tubular portion 172. As shown in FIG. A bearing groove 172 b is formed at the left end of the inner peripheral surface of the inner cylindrical portion 172 . The connecting portion 174 is arranged between the inner peripheral surface of the outer tubular portion 170 and the outer peripheral surface of the inner tubular portion 172 . The connecting portion 174 connects the outer tubular portion 170 and the inner tubular portion 172 .

As shown in FIG. 19, the left collar portion 164 and the right collar portion 166 have a wide annular shape. A wire W (see FIG. 18) is arranged between the left collar portion 164 and the right collar portion 166 . The left collar portion 164 is arranged at the left end of the body portion 162 . The left collar portion 164 extends radially outward from the outer peripheral surface of the outer tubular portion 170 . The left collar portion 164 has a locking groove 176 penetrating the left collar portion 164 in the thickness direction (horizontal direction). The locking groove 176 includes a guide portion 176a extending from the inner peripheral surface to the outer peripheral surface of the left collar portion 164, a starting end locking portion 176b connected to the guide portion 176a near the inner peripheral surface of the left collar portion 164, and a left collar portion. and a terminal stop portion 176c connected to the guide portion 176a near the outer peripheral surface of 164 . One end of the wire W wound around the outer cylindrical portion 170 is locked to the left collar portion 164 at a starting end locking portion 176b. Further, the other end of the wire W wound around the outer tubular portion 170 is locked to the left collar portion 164 by a terminal locking portion 176c.

The right collar portion 166 is arranged at the right end of the body portion 162 . The right collar portion 166 extends radially outward from the outer peripheral surface of the outer tubular portion 170 . The diameter of the outer peripheral surface of right collar portion 166 is smaller than the diameter of the outer peripheral surface of left collar portion 164 .

The six protrusions 168 extend along the rotation axis AX of the reel 33 from between the inner peripheral surface of the outer cylindrical portion 170 and the outer peripheral surface of the inner cylindrical portion 172 than the outer surface (right surface) of the right collar portion 166. It extends outward (to the right). The protrusion 168 has a substantially semi-cylindrical shape obtained by dividing a cylinder in half. The six protrusions 168 are arranged at regular intervals around the rotation axis AX of the reel 33 (along the rotation direction of the reel 33). In this embodiment, the adjacent protrusions 168 are arranged around the rotation axis AX of the reel 33 with an interval corresponding to an angle of 60 degrees.

The six protrusions 168 include three short protrusions 180 and three long protrusions 182 . The longitudinal length of the long protrusion 182 is longer than the longitudinal length of the short protrusion 180 . The long projection 182 extends farther from the outer surface (right surface) of the right flange 166 than the short projection 180 does. With one projection 168 out of the six projections 168 (hereinafter referred to as a reference projection 168a) as a reference, the three short projections 180 are arranged at 0 degrees along the rotation direction of the reel 33. position, 120-degree position, and 180-degree position. The three elongated protrusions 182 are arranged at 60 degrees, 240 degrees, and 300 degrees along the rotation direction of the reel 33 with reference to the reference protrusion 168a. .

The number of short projections 180 , the number of long projections 182 , and the arrangement of the short projections 180 and long projections 182 differ depending on the type of reel 33 . For example, in another type of reel 33 , the six projections 168 include two short projections 180 and four long projections 182 . Two short projections 180 are arranged at 0 and 180 degrees with respect to the reference projection 168a, and four long projections 182 are arranged at 60 and 120 degrees. , 240-degree, and 300-degree positions.

As shown in FIG. 18, the reel holder 10 further includes a reel attachment portion 186 for rotatably attaching the reel 33 to the reel holder 10 . The reel mounting portion 186 includes a left reel mounting portion 188 and a right reel mounting portion 190 .

The left reel attachment portion 188 is attached to the main cover 28 . The left reel attachment portion 188 includes a stopper 192 , a cap 194 and a compression spring 196 . The stopper 192 has a cylindrical shape with a bottom wall 192a at its right end. An insertion opening 28 a is formed in the main cover 28 , and the stopper 192 is inserted into the insertion opening 28 a from the left side of the main cover 28 . The stopper 192 has a flange 192b located at the left end of the stopper 192. As shown in FIG. The flange 192b can contact the main cover 28 from the left side. This prevents the stopper 192 from coming out of the insertion opening 28a from the left side to the right side. A cap 194 is fixed to the left surface of the main cover 28 . The cap 194 prevents the stopper 192 from slipping out of the insertion opening 28a from the right side to the left side. One end of the compression spring 196 is fixed to the cap 194 and the other end of the compression spring 196 contacts the bottom wall 192 a of the stopper 192 . When the main cover 28 is closed with respect to the holder housing 26 and the reel 33 is arranged in the housing space 26b, the compression spring 196 directs the stopper 192 toward the bearing groove 172b of the inner cylindrical portion 172 of the bobbin 160. to activate. The stopper 192 is received in the bearing groove 172b and slidably supports the inner cylindrical portion 172. As shown in FIG.

The right reel mounting portion 190 includes a turntable 198 , bearings 200 and 202 and a ring member 204 .

An insertion opening 26d is formed in the right surface of the holder housing 26, and the turntable 198 is inserted into the insertion opening 26d. The turntable 198 is arranged with a gap from the holder housing 26 in the insertion opening 26d. The turntable 198 is rotatable around a rotation axis extending in the left-right direction. The rotation axis of the turntable 198 is the same as the rotation axis AX of the reel 33 . The turntable 198 includes a turntable body 206 , an engaging member 208 and a shaft member 210 . The turntable body 206 has a substantially disk shape. As shown in FIG. 20, the turntable main body 206 has a plurality of (six in this embodiment) receiving portions 206a. The number of receiving portions 206 a is equal to the number of protrusions 168 . The receiving portion 206a has a circular cross-sectional shape. The receiving portion 206a penetrates the turntable main body 206 in the thickness direction. The six receiving portions 206a are arranged at equal intervals around the rotation axis AX of the reel 33 (along the rotation direction of the reel 33). In this embodiment, the adjacent receiving portions 206a are arranged around the rotation axis AX of the reel 33 with an interval corresponding to an angle of 60 degrees.

The engaging member 208 has a substantially cylindrical shape. The engaging member 208 extends leftward from the left surface of the turntable body 206 . The engaging member 208 has an engaging wall 208a formed on its outer peripheral surface. As shown in FIG. 18, when the reel 33 is arranged in the housing space 26b, the engaging member 208 is inserted into the inner cylindrical portion 172 of the bobbin 160 from the right side. At this time, the engaging wall 208a (see FIG. 20) engages with the engaging groove 172a of the inner tubular portion 172. As shown in FIG. Thereby, the reel 33 is fixed to the turntable 198 .

The shaft member 210 extends rightward from the right surface of the turntable body 206 . Shaft member 210 has a substantially cylindrical shape.

The ring member 204 is arranged in the auxiliary space 30a. The ring member 204 surrounds the outer peripheral surface of the shaft member 210 along the circumferential direction. Ring member 204 rotatably supports shaft member 210 via bearings 200 and 202 . As shown in FIG. 21, the ring member 204 has two screw holes 204a. The ring member 204 is fixed to the auxiliary cover 30 (see FIG. 18) by screwing a screw (not shown) into the screw hole 204a. Therefore, the turntable 198 is rotatably supported by the auxiliary cover 30 via the ring member 204 and bearings 200 and 202 .

Next, the type detection unit 158 will be explained. As shown in FIG. 21 , the type detection section 158 includes a type detection unit 216 and a rotation detection unit 218 . The type detection unit 216 includes a type detection device 220 and a type detection magnetic sensor 222 (see FIG. 25).

As shown in FIG. 22, the kind detection device 220 is fixed to the turntable 198 . The type detection device 220 includes a cover member 226, a plurality of (six in this embodiment) support members 228, a plurality of (six in this embodiment) movable members 230, and a plurality of (six in this embodiment) type detecting magnet 232 and a plurality of (six in this embodiment) compression springs 234 .

As shown in FIG. 23, the cover member 226 includes a base member 238 and a plurality of (six in this embodiment) sandwiching members 240 . The base member 238 has a disc shape with an opening in the center. A center axis of the base member 238 is equal to the rotation axis AX of the reel 33 . Six sandwiching members 240 extend leftward from the left surface of the base member 238 . The sandwiching member 240 includes a pair of sandwiching walls 240a, 240b facing each other. The six sandwiching members 240 are arranged at regular intervals around the rotation axis AX of the reel 33 (along the rotation direction of the reel 33). In this embodiment, the adjacent pinching members 240 are spaced around the axis of rotation AX of the reel 33 with a spacing corresponding to an angle of 60 degrees.

As shown in FIG. 24, the six support members 228 are integrally formed with the turntable 198. As shown in FIG. The six support members 228 extend rightward from the right surface of the turntable body 206 . The support member 228 is arranged on the periphery of the receiving portion 206a (see FIG. 20) of the turntable body 206. As shown in FIG. The support member 228 has a cylindrical shape that is partially interrupted in the circumferential direction. The support member 228 includes a cutout portion 228a that is partially interrupted in the circumferential direction, and an inner protrusion 228b that is arranged at a position facing the cutout portion 228a. The notch portion 228a is arranged radially outward of the turntable main body 206 from the inner projection portion 228b. Six support members 228 are arranged to surround the ring member 204 . The six support members 228 are arranged at equal intervals around the rotation axis AX of the reel 33 (along the rotation direction of the reel 33). In this embodiment, the adjacent support members 228 are spaced around the rotation axis AX of the reel 33 with a spacing corresponding to an angle of 60 degrees.

A movable member 230 shown in FIG. 23 is supported by a support member 228 so as to be slidable in the left-right direction. The movable member 230 is arranged inside the support member 228 . The movable member 230 has a substantially cylindrical shape with a bottom wall 230a at its left end. The movable member 230 has a receiving groove 230b and a fixed groove 230c extending from the right end toward the bottom wall 230a. The receiving groove 230b and the fixed groove 230c are arranged with an interval corresponding to an angle of 180 degrees with respect to the circumferential direction of the outer peripheral surface of the movable member 230. As shown in FIG. The receiving groove 230b receives an inner protrusion 228b (see FIG. 24) of the support member 228. As shown in FIG. Thereby, the rotation of the movable member 230 is suppressed. A type detection magnet 232 is fitted in the fixed groove 230c. As a result, the type detection magnet 232 is fixed to the movable member 230 .

The compression spring 234 is positioned between a pair of pinching walls 240a, 240b of the pinching member 240. As shown in FIG. One end of the compression spring 234 contacts the base member 238 and the other end of the compression spring 234 contacts the bottom wall 230 a of the movable member 230 . The compression spring 234 biases the movable member 230 toward the initial position and away from the base member 238 . This allows the movable member 230 to slide between the initial position and the specific position. Here, the initial position is the position of the movable member 230 when the reel 33 is not attached to the reel holder 10 .

As shown in FIG. 25, the type detection magnetic sensor 222 is fixed to a sensor substrate 244 . The sensor board 244 faces the type detection device 220 . The type detection magnetic sensor 222 is electrically connected to the control circuit board 36 (see FIG. 3) by wiring (not shown).

The rotation detection unit 218 shown in FIG. 26 includes a plurality of (three in this embodiment) rotation detection magnets 246 and a rotation detection magnetic sensor 248 . The rotation detection magnet 246 is fixed to the base member 238 . The three rotation detection magnets 246 are arranged at regular intervals along the circumferential direction of the outer peripheral surface of the base member 238 (around the rotation axis AX of the reel 33). In this embodiment, the adjacent rotation detection magnets 246 are arranged along the circumferential direction of the outer peripheral surface of the base member 238 with an interval corresponding to an angle of 120 degrees.

The rotation detection magnetic sensor 248 is fixed to the sensor substrate 244 . The rotation detection magnetic sensor 248 is electrically connected to the control circuit board 36 (see FIG. 3) by wiring (not shown). The rotation detection magnetic sensor 248 is arranged side by side with the type detection magnet 232 in the direction along the rotation axis AX of the reel 33 . The rotation detection magnetic sensor 248 detects the rotation detection magnet 246 when the rotation detection magnet 246 rotates to a position corresponding to the rotation detection magnetic sensor 248 .

Next, a method for detecting the type of reel 33 will be described. First, with the main cover 28 (see FIG. 18) of the reel holder 10 open, each projection 168 (see FIG. 26) of the reel 33 is inserted into each receiving portion 206a (see FIG. 26) of the turntable 198. As shown in FIG. Thereby, the protrusion 168 engages with the receiving portion 206a. Next, the main cover 28 is closed, and the lock lever 32 (see FIG. 1) is rotated to keep the main cover 28 closed. 18, the engaging wall 208a (see FIG. 20) of the engaging member 208 of the turntable 198 is engaged with the engaging groove 172a, and the stopper 192 is received in the bearing groove 172b of the reel 33. . Thereby, the reel 33 is attached to the reel attachment portion 186 so as to be rotatable with respect to the holder housing 26 .

Also, as shown in FIG. 26, when the reel 33 is attached to the reel attachment portion 186, the three long protrusions 182 push the corresponding movable members 230 from the initial position to the attachment position. The mounting position is positioned closer to the base member 238 of the cover member 226 than the initial position with respect to the direction along the rotation axis AX of the reel 33 . Also, the mounting position may vary depending on the type of reel 33 . When the movable member 230 is pushed to the mounting position, the kind detection magnet 232 is also pushed. When the movable member 230 is located at the mounting position, the type detection magnet 232 does not face the type detection magnetic sensor 222 even if the reel 33 rotates (see the movable member 230 on the front side in FIG. 26). On the other hand, since the length of the three short projections 180 is shorter than the length of the long projection 182, even if the reel 33 is attached to the reel attachment portion 186, the corresponding movable member 230 is still attached. do not come into contact with These movable members 230 are not pushed in by the short protrusions 180 and are arranged in the initial positions by the biasing force of the compression springs 234 . When the movable member 230 is arranged at the initial position, the kind detection magnet 232 is arranged at a position facing the kind detection magnetic sensor 222 when the reel 33 rotates (the movable member on the rear side in FIG. 26). 230). Here, since the number of short protrusions 180, the number of long protrusions 182, and the arrangement of the short protrusions 180 and the long protrusions 182 differ depending on the type of reel 33, the movable member 230 pushed to the mounting position is , differ depending on the type of the reel 33 .

Next, the control circuit board 36 (see FIG. 3) executes type detection processing for detecting the type of reel 33 . When the control circuit board 36 detects that the main cover 28 is closed via a closed state detection switch (not shown) attached to the holder housing 26, it performs type detection processing. The type detection process is performed, for example, when the reel 33 is attached to the reel holder 10 in the newly purchased reinforcing bar binding machine 2, or when the new reel 33 is attached to the reel holder 10 to replace the used reel 33 with a new reel 33. Executed when attached to The type detection process is different from the bundling operation of bundling the reinforcing bars R using the wire W. FIG.

First, when the control circuit board 36 rotates the feed motor 50 (see FIG. 4) forward (rotates in the direction D1 shown in FIG. 4), the reel 33 rotates. When the reel 33 rotates, the type detection device 220 and the rotation detection magnet 246 rotate together with the turntable 198 . At this time, when the movable member 230 arranged at the initial position passes the position facing the type detection magnetic sensor 222, the type detection magnetic sensor 222 detects, for example, a change in magnetism, and the type detection magnet 232 to detect The control circuit board 36 detects that the type detection magnet 232 has been detected. Further, when the rotation detection magnet 246 passes through the position facing the rotation detection magnetic sensor 248 , the rotation detection magnetic sensor 248 detects, for example, magnetic variation and detects the rotation detection magnet 246 . The control circuit board 36 detects that the rotation detection magnet 246 has been detected. The control circuit board 36 detects the signal chart shown in FIG. 27 as the reel 33 rotates. In FIG. 27 , the signal chart represented by the upper solid line is the signal chart for detection of the type detection magnet 232 , and the signal chart represented by the lower solid line is the signal chart for detection of the rotation detection magnet 246 . In the example of FIG. 27, the signal strength is "1" when the type detection magnet 232 is detected and when the rotation detection magnet 246 is detected, and when the type detection magnet 232 is not detected. When the rotation detection magnet 246 is not detected, the signal intensity is "0".

The control circuit board 36 displays a signal chart relating to the detection of the rotation detection magnet 246. After the signal intensity becomes "1" for the first time, the signal intensity becomes "1" three times. has made one revolution, and the feed motor 50 is stopped. When the control circuit board 36 determines that the number of rotations of the feed motor 50 has become equal to or less than a predetermined number (for example, 0 times), it determines that the feed motor 50 has stopped. Next, the control circuit board 36 specifies the shape of the signal chart relating to the detection of the type detection magnet 232 detected during the period T1 in FIG. Next, the control circuit board 36 identifies a reference signal chart that matches the shape of the identified signal chart. Since the movable member 230 pushed to the mounting position differs depending on the type of reel 33, the shape of the reference signal chart differs depending on the type of reel 33. FIG. The control circuit board 36 stores a plurality of reference signal charts corresponding to the types of reels 33 . The control circuit board 36 identifies the type of reel 33 from the identified reference signal chart. Next, the control circuit board 36 sets conditions for binding the wire W to the reinforcing bar R in the reinforcing bar binding machine 2 according to the type of reel 33 specified. Finally, the control circuit board 36 reversely rotates the feed motor 50 (rotates in the direction D2 shown in FIG. 4) to pull the wire W back toward the reel 33 .

(effect)
The reinforcing bar binding machine 2 includes a reel 33 having a bobbin 160, a wire W wound around the bobbin 160, a reel attachment portion 186 for rotatably attaching the reel 33, and a wire W wound around the bobbin 160. A feeding unit 38 for feeding the wire W around the reinforcing bar R, a twisting unit 46 for twisting the wire W around the reinforcing bar R, a type detecting unit 158 for detecting the type of the reel 33, a reel mounting unit 186, It includes a portion 38 , a twisted portion 46 , and a support portion 15 that supports the type detection portion 158 . The type detection unit 158 has a movable member 230 that can move with respect to the support unit 15 . When the reel 33 is not attached to the reel attachment portion 186, the movable member 230 is arranged at the initial position. When the reel 33 is attached to the reel attachment portion 186 , the movable member 230 is arranged at an attachment position according to the type of the reel 33 .

According to the above configuration, the type of reel 33 is detected based on the position of movable member 230 . The position of the movable member 230 can be detected using a contact sensor or a non-contact sensor other than a photointerrupter. The type of reel 33 can be detected while reducing the number of photointerrupters.

The reinforcing bar binding machine 2 also includes a reel attachment portion 186 for rotatably attaching the reel 33, which includes a bobbin 160 and a wire W wound around the bobbin 160, and a wire W wound around the bobbin 160. A feeding section 38 for feeding W around the reinforcing bar R, a twisting section 46 for twisting the wire W around the reinforcing bar R, a type detecting section 158 for detecting the type of the reel 33, a reel mounting section 186, and a feeding section 38. , the twisted portion 46 , and the support portion 15 that supports the type detection portion 158 . The type detection unit 158 has a movable member 230 that can move with respect to the support unit 15 . When the reel 33 is not attached to the reel attachment portion 186, the movable member 230 is arranged at the initial position. When the reel 33 is attached to the reel attachment portion 186 , the movable member 230 is arranged at an attachment position according to the type of the reel 33 .

According to said structure, there can exist an effect similar to said reinforcing-bar binding machine 2. FIG.

The reel 33 also includes a bobbin 160 and a wire W wound around the bobbin 160 . The reel 33 is used by being rotatably attached to the reel attachment portion 186 of the reinforcing bar binding machine 2 . The reinforcing bar binding machine 2 includes a type detection section 158 that detects the type of the reel 33 and a support section 15 that supports the reel attachment section 186 and the type detection section 158 . The type detection unit 158 has a movable member 230 that can move with respect to the support unit 15 . When the reel 33 is not attached to the reel attachment portion 186, the movable member 230 is arranged at the initial position. When the reel 33 is attached to the reel attachment portion 186 , the bobbin 160 moves the movable member 230 to an attachment position according to the type of the reel 33 .

According to the above configuration, when the reel 33 is attached to the reel attachment portion 186 of the reinforcing bar binding machine 2 , the type of the reel 33 is detected based on the position of the movable member 230 . The position of the movable member 230 can be detected using a contact sensor or a non-contact sensor other than a photointerrupter. The type of the reel 33 can be detected by the reinforcing bar binding machine 2 while reducing the number of photointerrupters used in the reinforcing bar binding machine 2 .

The reel mounting portion 186 also includes a turntable 198 rotatably supported by the support portion 15 . The bobbin 160 is fixed to the turntable 198 when the reel 33 is attached to the reel attachment portion 186 .

According to the above configuration, since the turntable 198 is supported by the support portion 15 , the turntable 198 does not need to be attached to or detached from the support portion 15 . It is possible to suppress the displacement of the rotating shaft of the turntable 198 . Thereby, it is possible to suppress the displacement of the rotation axis AX of the reel 33 .

In addition, the bobbin 160 includes a body portion 162 around which the wire W is wound, a collar portion 166 arranged at one end of the body portion 162, and along the rotation axis AX of the reel 33, the outer surface of the collar portion 166. and a long protrusion 182 protruding outward. The turntable 198 includes a receiving portion 206a that receives and engages the elongate projection 182 .

According to the above configuration, the reel 33 can be fixed to the turntable 198 with a simple configuration.

Further, when the elongated protrusion 182 is received in the receiving portion 206a, the elongated protrusion 182 presses the movable member 230 from the initial position toward the mounting position.

According to the above configuration, it is possible to move the movable member 230 from the initial position to the mounting position by using the long protrusion 182 for mounting the reel 33 on the reel mounting portion 186 .

Also, the movable member 230 is supported by the turntable 198 so as to be movable between the initial position and the mounting position.

If the movable member 230 is not supported by the turntable 198 and does not rotate together with the reel 33, the structure of the reel mounting portion 186 becomes complicated. According to the above configuration, it is possible to prevent the structure of the reel attachment portion 186 from becoming complicated.

The type detection unit 158 is fixed to the type detection magnet 232 fixed to the movable member 230 and to the support section 15, and detects whether the movable member 230 is at the mounting position by detecting the type detection magnet 232. and a type detection magnetic sensor 222 capable of detecting whether or not.

According to the above configuration, the type-detecting magnetic sensor 222 detects, for example, magnetic variation caused by the type-detecting magnet 232 and detects whether the movable member 230 is at the mounting position. It is possible to detect whether or not the movable member 230 is at the mounting position without being contaminated by foreign matter or receiving ambient light, as compared with the case where a photointerrupter is used.

The type detection unit 158 further includes a compression spring 234 that biases the movable member 230 toward the initial position.

According to the above configuration, the movable member 230 can be returned to the initial position when the reel 33 is removed from the reel mounting portion 186 .

The type detection section 158 further includes a rotation detection unit 218 that detects the rotation angle of the reel 33 .

According to the above configuration, not only the type of the reel 33 but also the rotation of the reel 33 can be detected using the type detection unit 158 .

Also, the rotation detection unit 218 is fixed to the rotation detection magnet 246 fixed to the movable member 230 and the support portion 15 , and detects the rotation angle of the reel 33 by detecting the rotation detection magnet 246 . and a detection magnetic sensor 248 .

According to the above configuration, the rotation detection magnetic sensor 248 detects, for example, magnetic fluctuations caused by the rotation detection magnet 246 to detect the rotation angle of the reel 33 . The rotation angle of the reel 33 can be detected without being affected by the adhesion of foreign matter or the like and by ambient light, as compared with the case where a photointerrupter is used.

(correspondence relationship)
The long protrusion 182 is an example of a "protrusion". The compression spring 234 is an example of a "biasing member." The rotation detection unit 218 is an example of a "rotation detector".

(Second embodiment)
A second embodiment will be described with reference to the drawings. In the second embodiment, only the points different from the first embodiment will be explained, and the same reference numerals will be given to the same points as in the first embodiment, and the explanation will be omitted. As shown in FIG. 28, the second embodiment does not have the rotation detection magnet 246 of the first embodiment. As shown in FIG. 29, when the movable member 230 is located at the mounting position, the rotation detection magnetic sensor 248 is located at a position facing the type detection magnet 232 when the reel 33 rotates.

A method for detecting the type of reel 33 will be described. Only the type detection process will be described below. First, when the control circuit board 36 (see FIG. 3) rotates the feed motor 50 (see FIG. 4) forward (rotates in the direction D1 shown in FIG. 4), the reel 33 rotates. When the reel 33 rotates, the kind detection device 220 rotates together with the turntable 198 . At this time, as shown in FIG. 30, when the movable member 230 arranged at the initial position passes the position facing the type detection magnetic sensor 222, the type detection magnetic sensor 222 faces the type detection magnet 232. Then, for example, the magnetic variation is detected, and the type detection magnet 232 is detected. The control circuit board 36 detects that the type detection magnet 232 has been detected. Further, when the movable member 230 arranged at the mounting position passes the position facing the rotation detection magnetic sensor 248, the rotation detection magnetic sensor 248 faces the type detection magnet 232, and detects, for example, magnetic variation. and detect the type detection magnet 232 . The control circuit board 36 detects that the type detection magnet 232 has been detected. The control circuit board 36 detects the signal chart shown in FIG. 31 as the reel 33 rotates. In FIG. 31, the upper solid line of the two solid lines is a signal chart regarding detection of the type detection magnet 232 fixed to the movable member 230 arranged at the initial position, and the lower solid line is the mounting position. 4 is a signal chart regarding detection of a rotation detection magnet 246 fixed to an arranged movable member 230. FIG. In the example of FIG. 31, the signal strength is "1" when the type detection magnet 232 is detected, and the signal strength is "0" when the type detection magnet 232 is not detected.

The control circuit board 36, in both signal charts related to the detection of the type detection magnet 232, after the signal intensity became "1" for the first time, when the number of times the signal intensity became "1" reached 6 times, It is determined that the reel 33 has made one rotation, and the feed motor 50 is stopped. When the control circuit board 36 determines that the number of rotations of the feed motor 50 has become equal to or less than a predetermined number (for example, 0 times), it determines that the feed motor 50 has stopped. Next, the control circuit board 36 identifies the shape of both signal charts detected within the period T2 in FIG. Next, the control circuit board 36 identifies a reference signal chart that matches the shape of both identified signal charts. Since the movable member 230 pushed to the mounting position differs depending on the type of reel 33, the shape of the reference signal chart differs depending on the type of reel 33. FIG. The control circuit board 36 stores a plurality of reference signal charts corresponding to the types of reels 33 . The control circuit board 36 identifies the type of reel 33 from the identified reference signal chart. Next, the control circuit board 36 sets conditions for binding the wire W to the reinforcing bar R in the reinforcing bar binding machine 2 according to the type of reel 33 specified. Finally, the control circuit board 36 reversely rotates the feed motor 50 (rotates in the direction D2 shown in FIG. 4) to pull the wire W back toward the reel 33 .

(Third embodiment)
A third embodiment will be described with reference to the drawings. In the third embodiment, only the points different from the first embodiment will be described, and the same reference numerals will be assigned to the same points as in the first embodiment, and the description thereof will be omitted. In a third embodiment, the bobbin 160 further comprises a unique shape portion 302, as shown in FIG. The unique shape portion 302 has a shape designed according to the type of reel 33 . The unique shape portion 302 is arranged near the periphery of the outer surface (right surface) of the right collar portion 166 . The unique shape portion 302 is formed integrally with the right collar portion 166 .

The unique shape portion 302 includes a plurality of (five in this embodiment) ribs 304 . The rib 304 protrudes rightward along the rotation axis AX of the reel 33 from the outer surface (right surface) of the right collar portion 166 . The rib 304 has an elongated shape with its longitudinal direction along the direction of rotation of the reel 33 . In the example shown in FIG. 32, the longitudinal length of the four ribs 304 is the same, and the longitudinal length of the remaining one rib 304 is shorter than the longitudinal length of the four ribs 304. . The height and width of rib 304 are constant along the length of rib 304 .

The number of ribs 304 and the length of each rib 304 in the longitudinal direction differ depending on the type of reel 33 . is set. For example, in another type of reel 33, the number of ribs 304 is four. Also, the lengths of the three ribs 304 in the longitudinal direction are the same, and the length of the remaining one rib 304 in the longitudinal direction is shorter than the length of the three ribs 304 in the longitudinal direction.

The five ribs 304 are arranged side by side along the rotation direction of the reel 33 . The five ribs 304 are spaced apart from each other along the rotation direction of the reel 33 . Also, the five ribs 304 are arranged at a position farther from the rotation axis AX of the reel 33 than the protrusion 168 is.

In the third embodiment, the protrusion 168 has a cylindrical shape. The six protrusions 168 have the same shape. That is, the longitudinal lengths of the six protrusions 168 are the same.

In the third embodiment, as shown in FIG. 33, the receiving portion 206a formed in the turntable main body 206 does not pass through the turntable main body 206. As shown in FIG. The receiving portion 206 a is recessed from the left surface of the turntable body 206 . 33 and subsequent drawings, the holder housing 26 is illustrated in a state in which the shape of the holder housing 26 is simplified.

A guide groove 306 is connected to each receiving portion 206a. The guide groove 306 extends along the rotation direction of the reel 33 (see FIG. 32). The guide groove 306 is recessed from the left surface of the turntable body 206 . The depth of the guide groove 306 gradually increases from one end toward the receiving portion 206a. The guide groove 306 guides the protrusion 168 toward the receiving portion 206a when the reel 33 is attached to the turntable 198. As shown in FIG. Thereafter, as shown in FIG. 36, the protrusion 168 is received by the receiving portion 206a and engages with the receiving portion 206a.

The turntable 198 is rotatably supported by the holder housing 26 of the reel holder 10 via bearings 300 . That is, in the third embodiment, the right reel mounting portion 190 does not have the bearings 200, 202 and the ring member 204 of the first embodiment.

As shown in FIG. 34, in the third embodiment, the rotation detection unit 218 includes a rotation detection magnetic sensor 348 and a plurality of (two in this embodiment) rotation detection magnets 346 (see FIG. 35). I have. In FIG. 34, the rotation detection magnetic sensor 348 is indicated by a dashed line. The rotation detection magnetic sensor 348 is fixed to the sensor substrate 344 . A sensor board 344 is fixed to the holder housing 26 . Although not shown, the rotation detection magnetic sensor 348 is arranged at a position overlapping the turntable body 206 (see FIG. 33) in the direction along the rotation axis AX of the reel 33 (see FIG. 32).

As shown in FIG. 35, two rotation detection magnets 346 are fixed to the right surface of the turntable main body 206 . The two rotation detection magnets 346 are arranged around the rotation axis AX of the reel 33 (the rotation axis of the turntable 198) with an interval corresponding to an angle of 180 degrees. The rotation detection magnet 346 rotates together with the turntable body 206 . The rotation detection magnet 346 passes through a position facing the rotation detection magnetic sensor 348 (see FIG. 34) when the turntable 198 is rotating. When facing the rotation detection magnet 346 , the rotation detection magnetic sensor 348 detects the rotation detection magnet 346 .

As shown in FIG. 34, the type detection unit 216 has a photointerrupter 322 . In the third embodiment, the species detection unit 216 does not comprise the species detection device 220 of the first embodiment.

A photointerrupter 322 is fixed to the holder housing 26 . The holder housing 26 has a through hole 330 penetrating through the holder housing 26 , and at least part of the photointerrupter 322 is arranged in the through hole 330 . The photointerrupter 322 is arranged at a position farther from the rotation axis AX of the reel 33 than the rotation detection magnetic sensor 348 . The photointerrupter 322 is electrically connected to the control circuit board 36 (see FIG. 3) by wiring (not shown). The wiring can be arranged outside the accommodation space 26b (see FIG. 3), and the wiring can be prevented from coming into contact with the rotating turntable 198 and the reel 33. FIG.

As shown in FIG. 37 , the photointerrupter 322 includes a base portion 323 , a light emitting portion 324 and a light receiving portion 326 . The light emitting portion 324 and the light receiving portion 326 are fixed to the base portion 323 . The light emitting section 324 is arranged apart from the light receiving section 326 . A light-emitting surface 324 a of the light-emitting portion 324 faces a light-receiving surface 326 a of the light-receiving portion 326 . The light emitting section 324 emits light from the light emitting surface 324 a toward the light receiving surface 326 a of the light receiving section 326 . The light receiving section 326 can detect light emitted from the light emitting section 324 .

Next, a method for detecting the type of reel 33 will be described. First, with the main cover 28 (see FIG. 1) of the reel holder 10 open, each projection 168 (see FIG. 32) of the reel 33 is moved along the guide groove 306 (see FIG. 33) to the receiving portion 206a (see FIG. 33). ), and insert it into the receiving portion 206a. Thereby, the protrusion 168 engages with the receiving portion 206a. Next, as shown in FIG. 18, the main cover 28 is closed, and the lock lever 32 (see FIG. 1) is rotated to keep the main cover 28 closed. Thereby, the reel 33 is accommodated in the reel holder 10 while being rotatably supported with respect to the holder housing 26 .

Next, the control circuit board 36 (see FIG. 3) executes type detection processing for detecting the type of reel 33 . First, the control circuit board 36 controls the photointerrupter 322 (see FIG. 37) to irradiate the light emitting surface 324a of the light emitting section 324 with light. Next, when the control circuit board 36 rotates the feed motor 50 (see FIG. 4) forward (rotates in the direction D1 shown in FIG. 4), the reel 33 rotates. As shown in FIG. 37 , the reel 33 rotates while allowing the plurality of ribs 304 to pass between the light emitting surface 324 a of the light emitting portion 324 and the light receiving surface 326 a of the light receiving portion 326 . When the rib 304 passes between the light-emitting surface 324a of the light-emitting portion 324 and the light-receiving surface 326a of the light-receiving portion 326, the light emitted from the light-emitting surface 324a is blocked by the rib 304, causing the light-receiving portion 326 to emit light. Light emitted from the surface 324a is no longer detected. The control circuit board 36 detects that the light receiving section 326 no longer detects light emitted from the light emitting surface 324a. On the other hand, when the rib 304 does not pass between the light emitting surface 324a of the light emitting portion 324 and the light receiving surface 326a of the light receiving portion 326, the light receiving portion 326 detects the light emitted from the light emitting surface 324a. The control circuit board 36 detects that the light receiving section 326 is detecting light emitted from the light emitting surface 324a. As the reel 33 rotates, the control circuit board 36 detects a signal chart (the signal chart represented by the upper solid line) relating to the detection of the rib 304 shown in FIG. In the signal chart regarding the detection of the rib 304, when the light receiving unit 326 does not detect the light emitted from the light emitting surface 324a, the signal intensity becomes "1", and when the light emitted from the light emitting surface 324a is detected. , the signal intensity becomes "0". The control circuit board 36 counts the number of times the signal strength becomes "1" while the reel 33 is rotating.

Further, when the reel 33 rotates, the rotation detection magnet 346 rotates together with the turntable 198 shown in FIG. When the rotation detection magnet 346 passes the position facing the rotation detection magnetic sensor 348 (see FIG. 34), the rotation detection magnetic sensor 348 detects the rotation detection magnet 346 . The control circuit board 36 detects that the rotation detection magnet 346 has been detected. As the reel 33 rotates, the control circuit board 36 detects a signal chart (a signal chart represented by a lower solid line) relating to the detection of the rotation detection magnet 346 shown in FIG. In the signal chart regarding the detection of the rotation detection magnet 346, the signal strength is "1" when the rotation detection magnet 346 is detected, and the signal strength is "0" when the rotation detection magnet 346 is not detected. becomes.

The control circuit board 36 displays a signal chart relating to the detection of the rotation detection magnet 346. After the signal intensity becomes "1" for the first time, the signal intensity becomes "1" two times. has made one revolution, and the feed motor 50 is stopped. When the control circuit board 36 determines that the number of rotations of the feed motor 50 has become equal to or less than a predetermined number (for example, 0 times), it determines that the feed motor 50 has stopped. Next, when the control circuit board 36 determines that the reel 33 has made one rotation, the number of times the signal intensity becomes "1" in the signal chart regarding the detection of the rib 304, that is, the light emitting surface 324a of the light emitting unit 324 The number of ribs 304 that have passed between the portion 326 and the light receiving surface 326a is counted. In FIG. 38, the number of ribs 304 is equal to the number of times the signal intensity detected within the period T3 becomes "1" in the signal chart regarding the detection of ribs 304. In FIG. Next, the control circuit board 36 identifies the type of reel 33 using the counted number of ribs 304 and the type identification table. The type identification table shows the relationship between the number of ribs 304 and the type of reel 33 . A type identification table is stored in the control circuit board 36 . Next, the control circuit board 36 sets conditions for binding the wire W to the reinforcing bar R in the reinforcing bar binding machine 2 according to the type of reel 33 specified. Finally, the control circuit board 36 reversely rotates the feed motor 50 (rotates in the direction D2 shown in FIG. 4) to pull the wire W back toward the reel 33 .

(effect)
The reinforcing bar binding machine 2 includes a reel 33 having a bobbin 160, a wire W wound around the bobbin 160, a reel attachment portion 186 for rotatably attaching the reel 33, and a wire W wound around the bobbin 160. A feeding portion 38 that feeds out the wire W around the reinforcing bar R, a twisting portion 46 that twists the wire W around the reinforcing bar R, a reel mounting portion 186, a feeding portion 38, and a support portion 15 that supports the twisting portion 46. , a rotation detection magnet 346 that can rotate integrally with the reel 33, a rotation detection magnetic sensor 348 that is fixed to the support portion 15 and detects the rotation of the rotation detection magnet 346, and the reel 33 that rotates. and a photointerrupter 322 for detecting the shape of the bobbin 160 when the bobbin 160 is detected.

According to the above configuration, the rotation detection magnetic sensor 348 detects that the reel 33 has made one rotation by detecting the rotation detection magnet 346 that rotates together with the reel 33 . Also, the photointerrupter 322 detects the shape of the bobbin 160 when the reel 33 rotates. With these, the shape of the bobbin 160 when the reel 33 rotates once can be detected. When the shape of the bobbin 160 differs depending on the type of the reel 33, the type of the reel 33 can be detected from the shape of the bobbin 160 detected. Therefore, the type of reel 33 can be detected while reducing the number of photointerrupters 322 .

The reinforcing bar binding machine 2 also includes a reel attachment portion 186 for rotatably attaching the reel 33, which includes a bobbin 160 and a wire W wound around the bobbin 160, and a wire W wound around the bobbin 160. A sending portion 38 that sends W around the reinforcing bar R, a twisting portion 46 that twists the wire W around the reinforcing bar R, a reel mounting portion 186, a sending portion 38, a support portion 15 that supports the twisting portion 46, A rotation detection magnet 346 that can rotate integrally with the reel 33, a rotation detection magnetic sensor 348 that is fixed to the support portion 15 and detects the rotation of the rotation detection magnet 346, and a sensor that rotates when the reel 33 rotates. and a photointerrupter 322 for detecting the shape of the bobbin 160 .

According to said structure, there can exist an effect similar to said reinforcing-bar binding machine 2. FIG.

The reel 33 disclosed in this specification includes a bobbin 160 and a wire W wound around the bobbin 160 . The reel 33 is used by being rotatably attached to the reel attachment portion 186 of the reinforcing bar binding machine 2 . The reinforcing bar binding machine 2 includes a support portion 15 that supports the reel mounting portion 186, a rotation detection magnet 346 that can rotate integrally with the reel 33, and is fixed to the support portion 15. A rotation detection magnetic sensor 348 for detecting rotation and a photointerrupter 322 are provided. The bobbin 160 has a shape that is detected by the photointerrupter 322 when the reel 33 rotates.

According to the above configuration, when the reel 33 is attached to the reel attachment portion 186 of the rebar binding machine 2, the rotation detection magnetic sensor 348 can detect the rotation detection magnet 346 rotating integrally with the reel 33. , it is detected that the reel 33 has made one rotation. Also, when the reel 33 is rotating, the shape of the bobbin 160 is detected by the photointerrupter 322 . As a result, the reinforcing bar binding machine 2 can detect the shape of the bobbin 160 when the reel 33 rotates once. When the shape of the bobbin 160 differs according to the type of the reel 33 , the type of the reel 33 can be detected by the reinforcing bar binding machine 2 based on the detected shape of the bobbin 160 . Therefore, the reinforcing bar binding machine 2 can detect the type of the reel 33 while reducing the number of photointerrupters 322 used in the reinforcing bar binding machine 2 .

The bobbin 160 also has a unique shape portion 302 having a shape that allows the photointerrupter 322 to distinguish the reel 33 from other reels 33 . The unique shape portion 302 passes between the light emitting portion 324 and the light receiving portion 326 of the photointerrupter 322 when the reel 33 rotates.

According to the above configuration, the type of the reel 33 is accurately detected by detecting the characteristic shape portion 302 passing between the light emitting portion 324 and the light receiving portion 326 of the photointerrupter 322 as the reel 33 rotates. be able to.

The unique shape portion 302 also includes a plurality of ribs 304 spaced apart from each other along the direction of rotation of the reel 33 . A control circuit board 36 is further provided for counting the number of ribs 304 passing between the light emitting portion 324 and the light receiving portion 326 of the photointerrupter 322 when the reel 33 rotates.

According to the above configuration, when the number of ribs 304 differs depending on the type of reel 33 , the type of reel 33 can be detected by a simple method of counting the number of ribs 304 .

The reel mounting portion 186 also includes a turntable 198 rotatably supported by the support portion 15 . The bobbin 160 is fixed to the turntable 198 when the reel 33 is attached to the reel attachment portion 186 .

According to the above configuration, since the turntable 198 is supported by the support portion 15 , the turntable 198 does not need to be attached to or detached from the support portion 15 . It is possible to suppress the displacement of the rotating shaft of the turntable 198 . Thereby, it is possible to suppress the displacement of the rotation axis AX of the reel 33 .

Also, the rotation detection magnet 346 is supported by the turntable 198 so as to be rotatable together with the turntable 198 . The rotation detection magnetic sensor 348 is arranged at a position overlapping at least a portion of the turntable 198 in the direction along the rotation axis AX of the reel 33 .

According to the above configuration, it is possible to accurately detect the rotation of the reel 33 with a simple configuration.

The bobbin 160 also has a protrusion 168 . The turntable 198 includes a receiving portion 206a that receives and engages the projection 168. As shown in FIG.

According to the above configuration, the reel 33 can be fixed to the turntable 198 with a simple configuration.

Also, the photointerrupter 322 is fixed to the support portion 15 .

According to the above configuration, even if the reel 33 rotates, the position of the photointerrupter 322 does not change. The photointerrupter 322 can accurately detect the shape of the bobbin 160 .

Also, the photointerrupter 322 is arranged at a position farther from the rotation axis AX of the reel 33 than the rotation detecting magnetic sensor 348 is.

According to the above configuration, the photointerrupter 322 and the rotation detection magnetic sensor 348 can be arranged side by side in the direction perpendicular to the rotation axis AX of the reel 33 .

(correspondence relationship)
The control circuit board 36 is an example of a "counter".

(Fourth embodiment)
A fourth embodiment will be described with reference to the drawings. In the fourth embodiment, only the points different from the first embodiment will be explained, and the same reference numerals will be given to the same points as in the first embodiment, and the explanation thereof will be omitted. The shape of the bobbin 160 of the reel 33 of the fourth embodiment is different from the shape of the bobbin 160 of the first embodiment, and the shape of the engaging member 208 of the turntable 198 of the fourth embodiment is the same as that of the first embodiment. It differs from the shape of member 208 .

As shown in FIG. 39, the bobbin 160 further includes one or more (two in this embodiment) ribs 400 . The rib 400 is formed on the inner peripheral surface of the inner tubular portion 172 . Here, the inner peripheral surface of the inner tubular portion 172 corresponds to the inner peripheral surface of the body portion 162 of the bobbin 160 . An inner peripheral surface of the inner cylindrical portion 172 defines an insertion space 402 . The engaging member 208 of the turntable 198 is inserted into the insertion space 402 . It should be noted that the outer peripheral surface of the outer tubular portion 170 corresponds to the outer peripheral surface of the body portion 162 of the bobbin 160 .

The rib 400 protrudes radially inward from the inner peripheral surface of the inner cylindrical portion 172 toward the rotation axis AX. Rib 400 is arranged in insertion space 402 . The rib 400 extends in the left-right direction along the rotation axis AX. The rib 400 extends from the vicinity of the center in the left-right direction of the inner peripheral surface of the inner tubular portion 172 to the right end surface of the inner tubular portion 172 . In addition, as shown in FIG. 40 , the right end surface of the inner cylindrical portion 172 is arranged on the left side of the right surface of the right collar portion 166 . The rib 400 is arranged closer (radially inward) than the protrusion 168 of the bobbin 160 to the rotation axis AX. Incidentally, the protrusion 168 corresponds to an information portion including information indicating the type of the reel 33 . As described in detail in the first embodiment, when the reel 33 is attached to the turntable 198 (see FIG. 42), the protrusion 168 is received in the receiving portion 206a (see FIG. 42), and the reel 33 is Information indicating the type is detected by the reinforcing bar binding machine 2 .

As shown in FIG. 41, the two ribs 400 are arranged at regular intervals around the rotation axis AX (along the rotation direction of the reel 33). In this embodiment, the two ribs 400 are arranged with an interval corresponding to an angle of 180 degrees around the rotation axis AX. The two ribs 400 are arranged at a position of about 0 degrees and a position of about 180 degrees around the rotation axis AX with reference to the reference projection 168a.

As shown in FIG. 42, the turntable 198 further includes one or more (six in this embodiment) guides 410 . The number of one or more guides 410 is greater than or equal to the number of one or more ribs 400 . Ribs 400 and guides 410 correspond to positioning portions. A guide 410 is formed on the outer peripheral surface of the engaging member 208 . The guide 410 protrudes from the outer peripheral surface of the engaging member 208 in a direction away from the rotation axis AX. The right end of guide 410 is connected to the left surface of turntable body 206 of turntable 198 . As shown in FIG. 43, the guide 410 is arranged closer to the rotation axis AX (radially inward) than the receiving portion 206a of the turntable body 206. As shown in FIG. The six guides 410 are arranged at regular intervals around the rotation axis AX. In this embodiment, adjacent guides 410 are spaced apart corresponding to an angle of 60 degrees around the axis of rotation AX.

As shown in FIG. 44, guide 410 has a substantially trapezoidal shape when viewed in a direction perpendicular to rotation axis AX. Guide 410 includes a first non-inclined surface 412 , a second non-inclined surface 414 and an inclined surface 416 . The first non-inclined surface 412 extends leftward from the right end of the engaging member 208 along the rotation axis AX. The first non-inclined surface 412 connects to the left side of the turntable body 206 . The first non-inclined surface 412 is substantially orthogonal to the left surface of the turntable body 206 . The left-right length L1 of the first non-inclined surface 412 is equal to the left-right length L2 of the short projection 180 of the bobbin 160 (see FIG. 40) and the left-right length of the long projection 182 of the bobbin 160 . above each of L3 (see FIG. 40).

The second non-inclined surface 414 extends leftward from the right end of the engaging member 208 along the rotation axis AX. A second non-inclined surface 414 connects to the left side of the turntable body 206 . The second non-inclined surface 414 is substantially orthogonal to the left surface of the turntable body 206 . The lateral length L4 of the second non-inclined surface 414 is longer than the lateral length L1 of the first non-inclined surface 412 .

The inclined surface 416 extends around the rotation axis AX. Inclined surface 416 connects the left end of first non-inclined surface 412 and the left end of second non-inclined surface 414 . Inclined surface 416 is angled with respect to both first non-inclined surface 412 and second non-inclined surface 414 . Inclined surface 416 is inclined at an obtuse angle with respect to first non-inclined surface 412, and in this embodiment the angle of inclination is approximately 150 degrees. Inclined surface 416 is inclined at an acute angle with respect to second non-inclined surface 414, and in this embodiment the angle of inclination is approximately 30 degrees. The angled surface 416 and the second non-inclined surface 414 define a corner 418 at the junction. Corners 418 are rounded.

Between the two adjacent guides 410 , a first guide space 420 is defined between the second non-inclined surface 414 of one guide 410 and the first non-inclined surface 412 of the other guide 410 . A second guide space 422 is defined between the second non-inclined surface 414 of one guide 410 and the inclined surface 416 of the other guide 410 . As shown in FIG. 43, the width W1 of the first guide space 420 (the width W1 between the second non-inclined surface 414 of one guide 410 and the first non-inclined surface 412 of the other guide 410) width W2 (see FIG. 41) around the rotation axis AX. The first guide space 420 is arranged on a straight line connecting the rotation axis AX and the center of the receiving portion 206a.

As shown in FIG. 42, the receiving portion 206a includes a guide surface 424. As shown in FIG. The guide surface 424 extends circumferentially along the periphery of the receiving portion 206a. The guide surface 424 has a tapered shape that is inclined with respect to the left surface of the turntable body 206 . Note that the receiving portion 206a corresponds to the first portion.

Next, a method of attaching the reel 33 to the turntable 198 (that is, the right reel attachment portion 190) will be described.

(Positioning process)
First, the user moves the reel 33 to the right along the rotation axis AX with respect to the engaging member 208 to insert the engaging member 208 into the insertion space 402 . As shown in FIG. 44 , rib 400 (see FIG. 39 ) contacts corner 418 of guide 410 and then moves along corner 418 to enter second guide space 422 . Next, as shown in FIG. 45, the rib 400 is guided by the inclined surface 416 and moves on the inclined surface 416 toward the first guide space 420 (toward the first non-inclined surface 412). Since the inclined surface 416 extends around the rotation axis AX, as the rib 400 moves on the inclined surface 416 toward the first guide space 420, the reel 33 rotates relative to the turntable 198 around the rotation axis AX. Rotate. In this embodiment, the reel 33 is gripped by the user, and the turntable 198 is rotatably supported by the support portion 15 (see FIG. 2), so the turntable 198 rotates around the rotation axis AX.

(approaching process)
When the user further moves the reel 33 to the right along the rotation axis AX with respect to the engaging member 208, the rib 400 is guided by the first non-inclined surface 412 and moves along the first non-inclined surface 412. Move toward the left side of the turntable body 206 . As shown in FIG. 46, while the rib 400 is moving along the first non-inclined surface 412, the protrusion 168 is always aligned in a position overlapping the receiving portion 206a in the direction along the rotation axis AX. . As the rib 400 approaches the left surface of the turntable main body 206, the protrusion 168 approaches the receiving portion 206a and contacts the guide surface 424. As shown in FIG. As shown in FIG. 47, the protrusion 168 is guided by the guide surface 424 and inserted into the receiving portion 206a. When the protrusion 168 is inserted into the receiving portion 206a, the reel 33 is attached to the right reel attachment portion 190 and positioned at a predetermined rotational position with respect to the reel 33 type detection device 220 (see FIG. 26). . The type detection device 220 corresponds to a reel information detection section for detecting information on the reels 33 .

As shown in FIG. 26, when the reel 33 is attached to the right reel attachment portion 190, the three elongated projections 182 press the corresponding movable member 230 of the type detection device 220 to move from the initial position to the attachment position. push in. After that, a process for detecting the type of reel 33 is executed, and the type of reel 33 is specified. Since the processing for detecting the type of reel 33 has been described in detail in the first embodiment, the description thereof will be omitted in this embodiment.

(effect)
The reinforcing bar binding machine 2 includes a reel 33 having a bobbin 160 and a wire W wound around the bobbin 160, and a receiving portion 206a (an example of a first portion). A right reel attachment portion 190 (an example of a reel attachment portion), a sending portion 38 that sends the wire W wound around the bobbin 160 around the reinforcing bar R, and a twisting that twists the wire W sent around the reinforcing bar R a portion 46; The bobbin 160 contains information about the reel 33, which is detected by the reinforcing bar binding machine 2 when the reel 33 is attached to the right reel attachment portion 190, and is a protrusion corresponding to the receiving portion 206a. A portion 168 (an example of an information portion) is provided. When the reel 33 is attached to the right reel attachment portion 190, the reel 33 is rotatable around the rotation axis AX. The reel 33 has ribs 400 . The right reel attachment portion 190 is arranged so that when the reel 33 is attached to the right reel attachment portion 190 along the rotation axis AX of the reel 33, the protrusion 168 overlaps the receiving portion 206a in the direction along the rotation axis AX of the reel 33. , and guides 410 for guiding the ribs 400 .

According to the above configuration, when the user attaches the reel 33 to the right reel attachment portion 190, the guide 410 guides the rib 400, so that the protrusion 168 is aligned with the receiving portion 206a in the direction along the rotation axis AX of the reel 33. overlap. Therefore, when the reel 33 is attached to the right reel attachment portion 190, the position of the reel 33 with respect to the right reel attachment portion 190 can be easily adjusted.

The guide 410 also includes a first non-inclined surface 412 extending along the rotation axis AX of the reel 33 and an inclined surface 416 inclined with respect to the first non-inclined surface 412 . First non-inclined surface 412 is connected to one end of inclined surface 416 . Guide 410 guides rib 400 from inclined surface 416 toward first non-inclined surface 412 when reel 33 is attached to right reel attachment portion 190 .

According to the above configuration, the simple configuration of guiding the rib 400 from the inclined surface 416 toward the first non-inclined surface 412 allows the reel 33 to move toward the right reel mounting portion 190 when the reel 33 is mounted to the right reel mounting portion 190 . position can be easily adjusted.

Further, the protrusion 168 is arranged at a position overlapping the receiving portion 206 a in the direction along the rotation axis AX of the reel 33 when the guide 410 guides the rib 400 along the first non-inclined surface 412 .

According to the above configuration, after the rib 400 has moved to the first non-inclined surface 412 , the user brings the reel 33 closer to the right reel mounting portion 190 along the rotation axis AX of the reel 33 , thereby moving the protrusion 168 . , the receiving portion 206a can be brought closer to the receiving portion 206a in the direction along the rotation axis AX of the reel 33 while being overlapped with the receiving portion 206a.

Also, the protrusion 168 protrudes from the bobbin 160 . The receiving portion 206 a receives the protrusion 168 when the reel 33 is attached to the right reel attachment portion 190 . The right reel mounting portion 190 has a guide 410 . With respect to the direction along the rotation axis AX of the reel 33, the length L1 of the first non-inclined surface 412 is greater than or equal to the lengths L2 and L3 of the projections 168. As shown in FIG.

If the length L1 of the first non-inclined surface 412 is shorter than the lengths L2, L3 of the projections 168, the projections 168 will be in contact with the right reel mounting portion 190 while the ribs 400 are moving on the inclined surface 416. As a result, the projection 168 cannot overlap the receiving portion 206a in the direction along the rotation axis AX of the reel 33. As shown in FIG. According to the above configuration, it is possible to prevent the projecting portion 168 from overlapping the receiving portion 206a in the direction along the rotation axis AX of the reel 33 .

The guide 410 also includes a second non-inclined surface 414 connected to the other end of the inclined surface 416 and inclined at an acute angle with respect to the inclined surface 416 . The angled surface 416 and the second non-inclined surface 414 define a corner 418 at the junction. Corners 418 are rounded.

For example, if the corner portion 418 has a planar shape, when the rib 400 abuts against the corner portion 418 of the guide 410 when the user attaches the reel 33 to the right reel attachment portion 190, the rib 400 moves to the inclined surface 416. can't According to the above configuration, when the user attaches the reel 33 to the right reel attachment portion 190 , even if the rib 400 abuts the rounded corner 418 , the rib 400 is pushed along the corner 418 to the inclined surface 416 . can be moved up to

Also, the first non-inclined surface 412 extends from the inclined surface 416 to the end of the engaging member 208 of the right reel mounting portion 190 in the direction along the rotation axis AX of the reel 33 .

According to the above configuration, the reel 33 can be attached to the right reel attachment portion 190 by moving the rib 400 along the first non-inclined surface 412 to the end of the engaging member 208 of the right reel attachment portion 190 . .

The bobbin 160 also includes a body portion 162 having an outer peripheral surface around which the wire W is wound and an inner peripheral surface arranged on the opposite side of the outer peripheral surface and defining an insertion space 402 . . The right reel attachment portion 190 includes an engaging member 208 (an example of an insertion shaft portion) that is inserted into the insertion space 402 of the body portion 162 . The rib 400 is formed on the inner peripheral surface of the trunk portion 162 . A guide 410 is formed in the engagement member 208 .

According to the above configuration, by a simple method of inserting the engaging member 208 into the insertion space 402 of the trunk portion 162 , the reel 33 is inserted into the right reel mounting portion 190 while adjusting the position of the reel 33 with respect to the right reel mounting portion 190 . can be attached to

The reinforcing bar binding machine 2 further includes a right reel mounting portion 190 , a feed portion 38 , and a support portion 15 that supports the twisting portion 46 . The right reel mounting portion 190 includes an engaging member 208 and further includes a turntable 198 rotatably supported by the support portion 15 .

According to the above configuration, when the user attaches the reel 33 to the right reel attachment portion 190 and the rib 400 is guided by the guide 410, the turntable 198 rotates. This makes it easier to adjust the position of the reel 33 with respect to the right reel mounting portion 190 .

Also, the protrusion 168 protrudes from the bobbin 160 . The receiving portion 206 a is arranged on the turntable 198 and receives the protrusion 168 when the reel 33 is attached to the right reel attachment portion 190 .

According to the above configuration, when the reel 33 is attached to the right reel attachment portion 190, it is possible to prevent the protrusion 168 from being displaced from the receiving portion 206a.

Also, the rib 400 is formed on the inner peripheral surface of the trunk portion 162 . A guide 410 is formed in the engagement member 208 .

Ribs 400 generally have a simpler structure than guides 410 . According to the above configuration, the structure of the reel 33 can be simplified.

Also, the rib 400 extends along the rotation axis AX of the reel 33 .

According to the above configuration, the strength of the rib 400 in the direction along the rotation axis AX of the reel 33 can be increased. Accordingly, even if the rib 400 comes into contact with the guide 410 when the reel 33 is attached to the right reel attachment portion 190, damage to the rib 400 can be suppressed.

The reel 33 also has one or more ribs 400 . The right reel mount 190 includes one or more guides 410 . The number of ribs 400 is less than or equal to the number of guides 410 .

According to the above configuration, it is possible to easily adjust the position of the reel 33 with respect to the right reel mounting portion 190 when mounting the reel 33 to the right reel mounting portion 190 while reducing the number of ribs 400 .

The reel 33 is used by being attached to a right reel attachment portion 190 (an example of a reel attachment portion) of the reinforcing bar binding machine 2 . The reel 33 has a bobbin 160 and a wire W wound around the bobbin 160 . The bobbin 160 has a protrusion 168 (an example of an information part) containing information about the reel 33 detected by the reinforcing bar binding machine 2 when the reel 33 is attached to the right reel attachment portion 190. I have. The bobbin 160 includes a rib 400 for aligning the projection 168 in place with respect to the right reel mount 190 .

When the right reel mounting portion 190 of the rebar binding machine 2 has a corresponding structure that guides the rib 400 to align the projection 168 in place with respect to the right reel mounting portion 190. Now, when the user attaches the reel 33 to the right reel attachment portion 190, the rib 400 of the reel 33 is guided to the corresponding structure, so that the protrusion 168 is positioned at a predetermined position with respect to the right reel attachment portion 190. are aligned. Therefore, when the reel 33 is attached to the right reel attachment portion 190, the position of the reel 33 with respect to the right reel attachment portion 190 can be easily adjusted.

The attachment method is to attach the reel 33 to the right reel attachment portion 190 (an example of the reel attachment portion) of the reinforcing bar binding machine 2 that binds the reinforcing bars R with the wire W. FIG. The reel 33 has a protrusion 168 (an example of an information portion) containing information about the reel 33 and is rotatable around the rotation axis AX when attached to the right reel attachment portion 190 . The right reel attachment portion 190 includes a receiving portion 206a (an example of a first portion) corresponding to the protrusion 168. As shown in FIG. The reel 33 has ribs 400 . The right reel mounting portion 190 has a guide 410 . The mounting method is to move the rib 400 along the guide 410 and insert the reel 33 into the right reel mounting portion 190 in the right direction (an example of the first direction), thereby moving the reel 33 to the right reel mounting portion 190 . An alignment step of rotating the reel 33 around the rotation axis AX to align the projecting portion 168 at a position overlapping the receiving portion 206a in the direction along the rotation axis AX of the reel 33; into the right reel attachment portion 190 in the right direction to bring the protrusion 168 closer to the receiving portion 206a.

According to the above configuration, when the user inserts the reel 33 rightward into the right reel mounting portion 190 , the rib 400 moves along the guide 410 , so that the projection 168 moves along the rotation axis AX of the reel 33 . It overlaps with the receiving portion 206a in the direction along the . Therefore, when the reel 33 is attached to the right reel attachment portion 190, the position of the reel 33 with respect to the right reel attachment portion 190 can be easily adjusted.

The reinforcing bar binding machine 2 includes a reel 33 including a bobbin 160 and a wire W wound around the bobbin 160, a right reel mounting portion 190 (an example of a reel mounting portion) for mounting the reel 33, A type detection device 220 (an example of a reel information detection section) for detecting information about the reel 33 when the reel 33 is attached to the right reel attachment section 190, , a twisting portion 46 for twisting the wire W sent around the reinforcing bar R, and when attaching the reel 33 to the right reel mounting portion 190, the reel 33 A rib 400 and a guide 410 (an example of an alignment portion) are provided for rotating the reel 33 around the rotation axis AX and aligning the reel 33 with the type detection device 220 .

According to the above configuration, when the user attaches the reel 33 to the right reel attachment portion 190, the rib 400 and the guide 410 rotate the reel 33 with respect to the right reel attachment portion 190 around the rotation axis AX of the reel 33. For this purpose, the reel 33 is aligned with the type detection device 220 at a predetermined position. Therefore, the position of the reel 33 with respect to the type detection device 220 can be easily adjusted when the reel 33 is attached to the right reel attachment portion 190 .

(Modification)
In one embodiment, the first example may be combined with the third example. Specifically, the bobbin 160 of the reel 33 has a plurality of protrusions 168 (that is, a plurality of short protrusions 180 and a plurality of long protrusions 182) of the first embodiment and a unique shape portion of the third embodiment. 302 (ie, a plurality of ribs 304). In this case, the rotation detection unit 218 comprises the photointerrupter 322 of the third embodiment. A photointerrupter 322 is fixed to the holder housing 26 . In the type detection process of this modified example, first, the control circuit board 36 controls the photointerrupter 322 to cause the light emitting surface 324a of the light emitting section 324 to emit light. Next, when the control circuit board 36 rotates the feed motor 50 (see FIG. 4) forward, the reel 33 rotates. As the reel 33 rotates, the control circuit board 36 detects a signal chart (the signal chart represented by the upper solid line) relating to the detection of the rib 304 shown in FIG. The control circuit board 36 is a signal chart relating to the detection of the rib 304. After the signal intensity becomes "1" for the first time, when the number of times the signal intensity becomes "1" reaches 5 times, the reel 33 rotates once. Then, the feed motor 50 is stopped. When the control circuit board 36 determines that the number of rotations of the feed motor 50 has become equal to or less than a predetermined number (for example, 0 times), it determines that the feed motor 50 has stopped. Next, the control circuit board 36 specifies the shape of the signal chart (the signal chart indicated by the upper solid line) regarding the detection of the type detection magnet 232 detected during the period T1 in FIG. Next, the control circuit board 36 identifies a reference signal chart that matches the shape of the identified signal chart. The control circuit board 36 identifies the type of reel 33 from the identified reference signal chart. Next, the control circuit board 36 sets conditions for binding the wire W to the reinforcing bar R in the reinforcing bar binding machine 2 according to the type of reel 33 specified. Finally, the control circuit board 36 reversely rotates the feed motor 50 (rotates in the direction D2 shown in FIG. 4) to pull the wire W back toward the reel 33 .

In one embodiment, the control circuit board 36 may identify the shape of the signal chart for the rib 304 detected within the period T3 in FIG. 38 when it determines that the reel 33 has made one revolution. In this case, the control circuit board 36 identifies a reference signal chart that matches the shape of the identified signal chart. The control circuit board 36 stores a plurality of reference signal charts corresponding to the types of reels 33 . The control circuit board 36 identifies the type of reel 33 from the identified reference signal chart.

In one embodiment, the number of protrusions 168 is not limited to six, and may be any number. Also, the number of short protrusions 180 and the number of long protrusions 182 are not limited to three, and may be any number.

In one embodiment, the plurality of protrusions 168 may not be arranged at regular intervals around the rotation axis AX of the reel 33 .

In one embodiment, ribs 400 may be formed on the outer circumference of engagement member 208 of turntable 198 . Also, the guide 410 may be formed on the inner peripheral surface of the inner cylindrical portion 172 of the bobbin 160 . In this embodiment, the rib 400 may extend from a predetermined position on the outer peripheral surface of the engaging member 208 to the left end surface of the engaging member 208 along the rotation axis AX. Further, the guide 410 may extend from a predetermined position on the inner peripheral surface of the inner tubular portion 172 to the right end surface of the inner tubular portion 172 along the rotation axis AX.

In one embodiment, the information portion of reel 33 may be located on wire W. FIG. At this time, the information part may be arranged near the end of the wire W. FIG. The first part may detect reel information from the information part.

In one embodiment, the reel 33 may comprise an RFID tag containing information indicating the type of reel 33 as the information portion. At this time, the turntable 198 may include an acquisition unit that acquires information indicating the type of the reel 33 from the RFID tag. With the rib 400 guided by the guide 410 , when the user attaches the reel 33 to the right reel attachment portion 190 , the RFID tag may overlap the acquisition portion in the direction along the rotation axis AX of the reel 33 .

In one embodiment, the reel 33 may have a specific shape as the information portion. The specific shape portion may have, for example, a three-dimensional shape that allows the manufacturer of the reinforcing bar binding machine 2 to be distinguished from others. This three-dimensional shape may be, for example, a three-dimensional shape made up of character information indicating the manufacturer of the reinforcing bar binding machine 2 . The turntable 198 may have a receptacle for receiving the feature.

In one embodiment, the alignment portion may comprise a first magnet and a second magnet. A first magnet may be located on the bobbin 160 . A second magnet may be located on the engagement member 208 . Due to the magnetic force (at least one of attractive force and repulsive force) acting between the first magnet and the second magnet, when the user attaches the reel 33 to the right reel attachment portion 190, the protrusion 168 is aligned with the rotation axis AX of the reel 33. It may overlap with the receiving portion 206a in the direction along.

In one embodiment, ribs 400 may be removable with respect to inner tubular portion 172 .

In one embodiment, the bobbin 160 may include a pin fixed to the inner peripheral surface of the inner tubular portion 172 with an adhesive or the like. At this time, since the pin is guided by the guide 410, when the user attaches the reel 33 to the right reel attachment portion 190, even if the protrusion 168 overlaps the receiving portion 206a in the direction along the rotation axis AX of the reel 33, good.

In one embodiment, ribs 400 may be located on left collar 164 or right collar 166 .

2: Reinforcement binding machine 10: Reel holder 15: Support part 26: Holder housing 26b: Accommodating space 28: Main cover 30: Auxiliary cover 30a: Auxiliary space 33: Reel 36: Control circuit board 38: Feeding part 40: Guiding part 44 : Cutting portion 46 : Twisted portion 158 : Type detecting portion 160 : Bobbin 162 : Body portion 164 : Left collar portion 166 : Right collar portion 168 : Projection 180 : Short projection 182 : Long projection 186 : Reel mounting portion 188 : Left reel mounting portion 190 : Right reel mounting portion 198 : Turntable 206 : Turntable main body 206a : Receiving portion 216 : Type detection unit 218 : Rotation detection unit 220 : Type detection device 222 : Type detection magnetic sensor 226 : Cover member 228: Support member 230: Movable member 232: Type detection magnet 234: Compression spring 244: Sensor substrate 246: Rotation detection magnet 248: Rotation detection magnetic sensor 302: Unique shape portion 304: Rib 322: Photointerrupter 324: Light emission Part 326 : Light receiving part 344 : Sensor substrate 346 : Rotation detection magnet 348 : Rotation detection magnetic sensor AX : Rotation axis B : Battery pack W : Wire 400 : Rib 402 : Insertion space 410 : Guide 412 : First non-inclined surface 414: second non-inclined surface 416: inclined surface 418: corner portion 420: first guide space 422: second guide space 424: guide surface

Claims (36)

a reel comprising a bobbin and a wire wound around the bobbin;
a reel mounting portion for rotatably mounting the reel;
a feeding unit for feeding the wire wound around the bobbin around a reinforcing bar;
a twisting part that twists the wire around the reinforcing bar;
a type detection unit that detects the type of the reel;
The reel attachment portion, the feeding portion, the twist portion, and a support portion that supports the type detection portion,
The type detection unit includes a movable member movable with respect to the support unit,
the movable member is arranged at an initial position when the reel is not attached to the reel attachment portion;
The reinforcing bar binding machine, wherein the movable member is arranged at a mounting position corresponding to the type of the reel when the reel is mounted on the reel mounting portion. The reel mounting portion includes a turntable rotatably supported by the support portion,
The rebar binding machine according to claim 1, wherein the bobbin is fixed to the turntable when the reel is attached to the reel attachment portion. The bobbin is
a trunk around which the wire is wound;
a collar portion arranged at one end of the body portion;
a protrusion that protrudes outward from the outer surface of the flange along the rotation axis of the reel,
3. The rebar binding machine according to claim 2, wherein the turntable includes a receiving portion that receives and engages with the protrusion. 4. The reinforcing bar binding machine according to claim 3, wherein when said projection is received in said receiving portion, said projection presses said movable member from said initial position toward said mounting position. The reinforcing bar binding machine according to any one of claims 2 to 4, wherein said movable member is supported by said turntable so as to be movable between said initial position and said mounting position. The type detection unit is
a type detection magnet fixed to the movable member;
A type detection magnetic sensor fixed to the support portion and capable of detecting whether or not the movable member is at the mounting position by detecting the type detection magnet. 6. The reinforcing bar binding machine according to any one of 1 to 5. The reinforcing bar binding machine according to any one of claims 1 to 6, wherein the type detection unit further includes a biasing member that biases the movable member toward the initial position. The reinforcing bar binding machine according to any one of claims 1 to 7, wherein the type detection section further includes a rotation detection section that detects a rotation angle of the reel. The rotation detection unit is
a rotation detection magnet fixed to the movable member;
9. The reinforcing bar binding machine according to claim 8, further comprising a rotation detection magnetic sensor fixed to said support portion and detecting said rotation angle of said reel by detecting said rotation detection magnet. a reel mounting portion for rotatably mounting a reel comprising a bobbin and a wire wound around the bobbin;
a feeding unit for feeding the wire wound around the bobbin around a reinforcing bar;
a twisting part that twists the wire around the reinforcing bar;
a type detection unit that detects the type of the reel;
The reel attachment portion, the feeding portion, the twist portion, and a support portion that supports the type detection portion,
The type detection unit includes a movable member movable with respect to the support unit,
The movable member is arranged at an initial position when the reel is not attached to the reel attachment portion,
The reinforcing bar binding machine, wherein the movable member is arranged at a mounting position corresponding to the type of the reel when the reel is mounted on the reel mounting portion. A reel comprising a bobbin and a wire wound around the bobbin,
The reel is used by being rotatably attached to a reel attachment portion of a reinforcing bar binding machine,
The reinforcing bar binding machine is
a type detection unit that detects the type of the reel;
a support portion that supports the reel attachment portion and the type detection portion;
The type detection unit includes a movable member movable with respect to the support unit,
The movable member is arranged at an initial position when the reel is not attached to the reel attachment portion,
The reel, wherein when the reel is attached to the reel attachment portion, the bobbin moves the movable member to an attachment position corresponding to the type of the reel. a reel comprising a bobbin and a wire wound around the bobbin;
a reel mounting portion for rotatably mounting the reel;
a feeding unit for feeding the wire wound around the bobbin around a reinforcing bar;
a twisting part that twists the wire around the reinforcing bar;
the reel attachment portion, the feed portion, and a support portion that supports the twist portion;
a rotation detection magnet rotatable integrally with the reel;
a rotation detection magnetic sensor that is fixed to the support and detects rotation of the rotation detection magnet;
and a photointerrupter that detects the shape of the bobbin when the reel rotates. The bobbin has a unique shape portion having a shape that allows the photointerrupter to distinguish the reel from other reels,
13. The reinforcing bar binding machine according to claim 12, wherein the unique shape portion passes between the light emitting portion and the light receiving portion of the photointerrupter when the reel rotates. The unique shape portion includes a plurality of ribs spaced apart from each other along the rotation direction of the reel,
14. The reinforcing bar binding according to claim 13, further comprising a counting section that counts the number of said plurality of ribs passing between said light emitting section and said light receiving section of said photointerrupter when said reel rotates. machine. The reel mounting portion includes a turntable rotatably supported by the support portion,
The reinforcing bar binding machine according to any one of claims 12 to 14, wherein the bobbin is fixed to the turntable when the reel is attached to the reel attachment portion. The rotation detection magnet is supported by the turntable so as to be rotatable together with the turntable,
16. The reinforcing bar binding machine according to claim 15, wherein said rotation detection magnetic sensor is arranged at a position overlapping at least a part of said turntable with respect to the direction along the rotation axis of said reel. The bobbin has a protrusion,
17. The rebar binding machine according to claim 15 or 16, wherein said turntable comprises a receiving portion for receiving and engaging said protrusion. The rebar binding machine according to any one of claims 12 to 17, wherein said photointerrupter is fixed to said support. The reinforcing bar binding machine according to any one of claims 12 to 18, wherein the photointerrupter is arranged at a position further from the rotation axis of the reel than the rotation detecting magnetic sensor. a reel mounting portion for rotatably mounting a reel comprising a bobbin and a wire wound around the bobbin;
a feeding unit for feeding the wire wound around the bobbin around a reinforcing bar;
a twisting part that twists the wire around the reinforcing bar;
the reel attachment portion, the feed portion, and a support portion that supports the twist portion;
a rotation detection magnet rotatable integrally with the reel;
a rotation detection magnetic sensor that is fixed to the support and detects rotation of the rotation detection magnet;
and a photointerrupter that detects the shape of the bobbin when the reel rotates. A reel comprising a bobbin and a wire wound around the bobbin,
The reel is used by being rotatably attached to a reel attachment portion of a reinforcing bar binding machine,
The reinforcing bar binding machine is
a support portion that supports the reel attachment portion;
a rotation detection magnet rotatable integrally with the reel;
a rotation detection magnetic sensor that is fixed to the support and detects rotation of the rotation detection magnet;
and a photointerrupter,
The reel, wherein the bobbin has a shape that is detected by the photointerrupter when the reel rotates. A rebar binding machine,
a reel comprising a bobbin and a wire wound around the bobbin;
a reel mounting portion for mounting the reel, comprising a first portion;
a feeding unit that feeds the wire wound around the bobbin around a reinforcing bar;
a twisting part for twisting the wire sent around the reinforcing bar;
One of the bobbin and the wire includes information about the reel, which is detected by the reinforcing bar binding machine when the reel is attached to the reel attachment portion; It has an information part corresponding to one part,
the reel is rotatable around a rotation axis when the reel is attached to the reel attachment portion;
one of the reel and the reel mounting portion includes a rib,
The other of the reel and the reel mounting portion is such that when the reel is mounted on the reel mounting portion along the rotation axis of the reel, the information portion is aligned with the first portion in a direction along the rotation axis of the reel. a guide for guiding said ribs so that they overlap each other. Said guide
a first non-inclined surface extending along the axis of rotation of the reel;
an inclined surface that is inclined with respect to the first non-inclined surface;
The first non-inclined surface is connected to one end of the inclined surface,
The reinforcing bar binding machine according to claim 22, wherein the guide guides the rib from the inclined surface toward the first non-inclined surface when attaching the reel to the reel attachment portion. The information portion is positioned to overlap the first portion in the direction along the axis of rotation of the reel when the guide guides the rib along the first non-inclined surface. Item 24. The reinforcing bar binding machine according to Item 23. the information portion comprises a projection projecting from the bobbin;
the first portion includes a receiving portion that receives the protrusion when the reel is attached to the reel attachment portion;
The reel mounting portion includes the guide,
The reinforcing bar binding machine according to claim 23 or 24, wherein the length of said first non-inclined surface is equal to or greater than the length of said protrusion with respect to said direction along said rotation axis of said reel. The guide further comprises a second non-inclined surface connected to the other end of the inclined surface and inclined at an acute angle with respect to the inclined surface,
the inclined surface and the second non-inclined surface define a corner at a connection point;
A rebar binding machine according to any one of claims 23 to 25, wherein said corners are rounded. 27. The first non-inclined surface extends from the inclined surface to the other end of the reel and the reel mounting portion in the direction along the rotation axis of the reel. The reinforcing bar binding machine described in the paragraph. The bobbin comprises a body having an outer peripheral surface around which the wire is wound and an inner peripheral surface arranged on the opposite side of the outer peripheral surface and defining an insertion space,
The reel mounting portion includes an insertion shaft portion that is inserted into the insertion space of the body portion,
The rib is formed on one of the inner peripheral surface of the body portion and the insertion shaft portion,
The reinforcing bar binding machine according to any one of claims 22 to 27, wherein said guide is formed on the other of said inner peripheral surface of said body portion and said insertion shaft portion. further comprising a support portion that supports the reel attachment portion, the feed portion, and the twist portion;
29. The reinforcing bar binding machine according to claim 28, wherein said reel mounting portion includes said insertion shaft portion, and further includes a turntable rotatably supported by said support portion. the information portion comprises a projection projecting from the bobbin;
30. The rebar binding machine according to claim 29, wherein said first portion is arranged on said turntable and includes a receiving portion for receiving said protrusion when said reel is attached to said reel attachment portion. . The rib is formed on the inner peripheral surface of the body,
The reinforcing bar binding machine according to any one of claims 28 to 30, wherein said guide is formed on said insertion shaft. 32. A rebar binder as claimed in any one of claims 22 to 31, wherein the rib extends along the axis of rotation of the reel. one of the reel and the reel mounting portion includes one or more ribs;
The other of the reel and the reel mounting portion includes one or more of the guides,
The reinforcing bar binding machine according to any one of claims 22 to 32, wherein the number of said ribs is less than or equal to the number of said guides. A reel used by being attached to a reel attachment portion of a reinforcing bar binding machine,
bobbin and
a wire wound around the bobbin;
One of the bobbin and the wire has an information portion containing the information of the reel, which is detected by the rebar binding machine when the reel is attached to the reel attachment portion. cage,
The reel, wherein the bobbin comprises ribs or guides for aligning the information portion in place with respect to the reel mount. A mounting method for mounting a reel to a reel mounting portion of a reinforcing bar binding machine that binds reinforcing bars with a wire,
The reel includes an information portion containing information about the reel, and is rotatable around a rotation axis when attached to the reel attachment portion;
The reel mounting portion has a first portion corresponding to the information portion,
one of the reel and the reel mounting portion includes a rib,
The other of the reel and the reel mounting portion includes a guide,
By inserting the reel into the reel mounting portion in the first direction while moving the rib along the guide, the reel is rotated about the rotation axis of the reel with respect to the reel mounting portion. an alignment step of aligning the information portion to a position overlapping the first portion in a direction along the rotation axis of the reel;
and an approaching step of, after the aligning step, bringing the information portion closer to the first portion by inserting the reel into the reel mounting portion in the first direction. a reel comprising a bobbin and a wire wound around the bobbin;
a reel mounting portion for mounting the reel;
a reel information detection section for detecting reel information when the reel is attached to the reel attachment section;
a feeding unit that feeds the wire wound around the bobbin around a reinforcing bar;
a twisting part that twists the wire sent around the reinforcing bar;
When the reel is attached to the reel mounting portion, the reel is rotated with respect to the reel mounting portion around the rotation axis of the reel to align the reel with the reel information detecting portion. A rebar binding machine, comprising: an alignment section;

Images