WO2023089907A1

WO2023089907A1 - Reinforcement binding machine and reel

Info

Publication number: WO2023089907A1
Application number: PCT/JP2022/032818
Authority: WO
Inventors: 駿岡村; 洋一郎小池
Original assignee: 株式会社マキタ
Priority date: 2021-11-19
Filing date: 2022-08-31
Publication date: 2023-05-25
Also published as: JP2023075730A

Abstract

This reinforcement binding machine comprises: a reel equipped with a bobbin and a wire wound on the bobbin; a reel mounting unit for rotatably mounting the reel; a feeding unit that feeds, around a reinforcing bar, the wire wound on the bobbin; a twisting unit that twists the wire around the reinforcing bar; a type detection unit that detects the type of reel; and a support unit that supports the reel mounting unit, the feeding unit, the twisting unit, and the type detection unit. The type detection unit detects the type of the reel before the reel is mounted to the reel mounting unit and rotated.

Description

Rebar binding machine and reel

The present invention relates to a reinforcing bar binding machine and reel.

A reinforcing bar binding machine is disclosed in JP-A-2017-24908. 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 for twisting the wire around the reinforcing bar; a photointerrupter for detecting the type of reel;

In the reinforcing bar binding machine as described above, when the reel is attached to the reel attachment portion and the reel rotates, the type of reel is detected by the photointerrupter. In order to detect the reel type, the rebar binding machine needs to rotate the reel. This specification discloses a technique that can detect the type of the reel without the rebar binding machine rotating the reel.

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 rotatably attaching the reel, and a wire wound around the bobbin. A feeding section for feeding the wire 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 support for supporting the The type detection section detects the type of reel before the reel is rotated after the reel is attached to the reel attachment section.

According to the above configuration, the reel type is detected before the reel is attached to the reel attachment portion and rotated. The type of reel can be detected without the rebar binding machine rotating the reel.

A rebar 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 wire wound around the bobbin; It supports a feeding section for feeding 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. a support; The type detection section detects the type of reel before the reel is rotated after the reel is attached to the reel attachment section.

According to the above configuration, it is possible to achieve the same effects as the above reinforcing bar binding machine.

The reel disclosed in this specification is used by being rotatably attached to the reel attachment portion of the reinforcing bar binding machine. The reel includes a bobbin having an information section holding type information indicating the type of reel, and a wire wound around the bobbin. The information part is detected by the rebar binding machine before the reel is attached to the reel attachment part and the reel is rotated.

According to the above configuration, when the above reel is used in a reinforcing bar binding machine, the type information indicating the type of reel is detected before the reel is attached to the reel attachment portion and rotated. The type of reel can be detected by the reinforcing bar binding machine without causing the reinforcing bar binding machine to rotate the reel.

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. FIG. 11 is a perspective view of the holder housing 26, the type detection unit 158, the turntable 204, and the sensor board 220 of the first embodiment; 2 is a perspective view of a turntable 204 and a rotation detection magnet 218 of the first embodiment; FIG. FIG. 10 is a perspective view of the holder housing 26, the type detection unit 158, and the turntable 204 of the first embodiment; FIG. 4 is a cross-sectional view of the

detection units

224, 226, and 228 of the first embodiment when the detection switch 238 is not pushed. FIG. 4 is a cross-sectional view of the reel holder 10 and the reel 33 in the vicinity of the type detection unit 158 of the first embodiment; FIG. 4 is a cross-sectional view of the

detection units

224, 226, and 228 of the first embodiment when the detection switch 238 is pushed. FIG. 12 is a perspective view of

detection units

224, 226, and 228 of the second embodiment; FIG. 11 is a cross-sectional view of the reel holder 10 and the reel 33 in the vicinity of the type detection unit 158 of the second embodiment; FIG. 12 is a cross-sectional view of the

detection units

224, 226, and 228 of the second embodiment in a state where the detection switch 238 is pushed. FIG. 11 is a perspective view of a holder housing 26, a type detection section 158, a turntable 204, and a sensor substrate 220 of the third embodiment; FIG. 11 is a cross-sectional view of the reel holder 10 and the reel 33 in the vicinity of the type detection unit 158 of the third embodiment;

Below, representative and non-limiting specific examples 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. Moreover, the additional features and inventions disclosed below may be used separately from or in conjunction with other features and inventions to provide further improved rebar tying machines and reels, methods of making and using the same. can be done.

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 expressly incorporated as limitations on the specific matter claimed in the original disclosure and claimed. are intended to be disclosed together 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.

In one or more embodiments, the bobbin includes a body around which the wire is wound, a collar disposed at one end of the body, and type information indicating the type of reel disposed on the collar. and an information unit holding The type detection section may detect the type information from the information section before the reel is rotated after the reel is attached to the reel mounting section.

According to the above configuration, the type of reel can be detected by a simple method of arranging the information section on the collar section.

In one or more embodiments, the type detector may comprise a first detector and a second detector. The information section may comprise a first information section that is detected by one of the first detection section and the second detection section before the reel is attached to the reel mounting section and the reel is rotated.

According to the above configuration, the first information section is detected by the first detection section or the second detection section. A reel type can be detected by a simple method of determining whether the first information section is detected by either the first detection section or the second detection section.

In one or more embodiments, the first information portion may be a rib having an annular shape. The central axis of the rib may be the same as the axis of rotation of the reel.

According to the above configuration, since the center axis of the rib is the same as the rotation axis of the reel, the type of reel can be detected regardless of the rotation angle of the reel when the reel is attached to the reel attachment portion.

In one or more embodiments, the first detector may be arranged at a position farther from the axis of rotation of the reel than the second detector with respect to the direction perpendicular to the axis of rotation of the reel.

When the first detector is arranged at the same position as the second detector with respect to the direction orthogonal to the rotation axis of the reel, the first detector and the first detector are detected when the first information part is an annular rib. If both of the two detection units erroneously detect the first information unit, and if the first information unit is a partially interrupted rib, the first detection unit and the second detection unit may be detected depending on the rotation angle when the reel is attached. The detector erroneously detects the first information part. According to the above configuration, it is possible to prevent the first detection section and the second detection section from erroneously detecting the first information section.

In one or more embodiments, one of the first sensing portion and the second sensing portion may comprise a push-in switch that is pushable by the first information portion.

According to the above configuration, it is possible to detect the reel type with a simple configuration using a push-in switch.

In one or more embodiments, one of the first detector and the second detector is a detection switch that detects when pushed by the first information part, and a switch that detects when pushed by the first information part. and a cover member disposed between the 1 information unit and the detection switch.

According to the above configuration, it is possible to prevent the first information section from sliding with respect to the detection switch when the reel rotates. As a result, it is possible to suppress wear of the detection switch due to the rotation of the reel.

In one or more embodiments, the one of the first detection part and the second detection part is pushed by the first information part until the cover member does not come into contact with the first information part. It may further comprise a pushing member for pushing the.

According to the above configuration, it is possible to prevent the first information portion from sliding with respect to the cover member when the reel rotates. As a result, it is possible to suppress wear of the cover member due to the rotation of the reel.

In one or more embodiments, one of the first detector and the second detector may comprise a laser switch for detecting the distance to the first information part.

According to the above configuration, one of the first detection section and the second detection section does not contact the first information section when the reel is attached to the reel attachment section. Accordingly, it is possible to suppress wear of one of the first detection portion and the second detection portion due to the rotation of the 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 support portion, it is not necessary to attach and detach the turntable to and from the support 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.

(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 includes 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. 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 is arranged at the front lower portion of the left housing 20 to hold the main cover 28 in a closed state. 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 includes 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 54 . 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 drive gear 60 from the reduction section 52 . The first feed gear 62 is rotatably supported by the base member 56 . The first feed gear 62 meshes with the drive 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 to each other. 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 .

The 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.

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 on the rightmost side with respect to the left clamp 114. As shown in FIG. 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 sent from the sending part 38 (see FIG. 6) to the guide part 40 (see FIG. 6) passes through the left wire passage 134 before reaching the guide part 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 for detecting the type of reel 33 .

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 rotatably supported by the reel holder 10 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

flange portions

164 and 166, a plurality of (six in this embodiment) protrusions 168, and an information portion 170. Below, the pair of

collars

164 and 166 may be referred to as a left collar 164 and a right collar 166, respectively. The body portion 162, the pair of

flange portions

164 and 166, the six protrusions 168, and the information portion 170 are made of resin material, for example. The body portion 162, the pair of

flange portions

164 and 166, the six protrusions 168, and the information portion 170 are integrally formed.

As shown in FIG. 18 , the trunk portion 162 includes an outer tubular portion 172 , an inner tubular portion 174 and a connection portion 176 . The outer tubular portion 172 and the inner tubular portion 174 have a substantially cylindrical shape. A wire W is wound in multiple layers around the outer peripheral surface of the outer tubular portion 172 . The inner tubular portion 174 is arranged inside the outer tubular portion 172 . A bearing groove 174 a is formed at the left end of the inner peripheral surface of the inner cylindrical portion 174 . The connecting portion 176 is arranged between the inner peripheral surface of the outer tubular portion 172 and the outer peripheral surface of the inner tubular portion 174 . The connecting portion 176 connects the outer tubular portion 172 and the inner tubular portion 174 .

As shown in FIG. 19, the left flange portion 164 and the right flange 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 172 . The left collar portion 164 has a locking groove 178 penetrating through the left collar portion 164 in the thickness direction (horizontal direction). The locking groove 178 includes a guide portion 178a extending from the inner peripheral surface to the outer peripheral surface of the left collar portion 164, a start end locking portion 178b connected to the guide portion 178a near the inner peripheral surface of the left collar portion 164, and a left collar portion. and a terminal stop portion 178c that connects to the guide portion 178a near the outer peripheral surface of 164 . One end of the wire W wound around the outer cylindrical portion 172 is locked to the left collar portion 164 at a starting end locking portion 178b. Further, the other end of the wire W wound around the outer cylindrical portion 172 is locked to the left collar portion 164 at the terminal end locking portion 178c.

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 172 . The diameter of the outer peripheral surface of right collar portion 166 is equal to the diameter of the outer peripheral surface of left collar portion 164 .

The six protrusions 168 extend from between the inner peripheral surface of the outer cylindrical portion 172 and the outer peripheral surface of the inner cylindrical portion 174 along the rotation axis AX of the reel 33 to the outer surface (right surface) of the right collar portion 166. It extends outward (to the right). The protrusion 168 has a cylindrical shape. 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 information section 170 includes a first information section 180 and a second information section 182 . The first information portion 180 has a first rib 186 having an annular shape. The first rib 186 protrudes outward (to the right) from the outer surface (right surface) of the right collar portion 166 along the rotation axis AX of the reel 33 . A central axis of the first rib 186 is equal to the rotation axis AX of the reel 33 . A first rib 186 surrounds the six protrusions 168 . The radial thickness of the first ribs 186 is constant in the circumferential direction of the outer peripheral surface of the first ribs 186 .

The second information section 182 has a second rib 188 having an annular shape. The second rib 188 protrudes outward (to the right) from the outer surface (right surface) of the right collar portion 166 along the rotation axis AX of the reel 33 . The height of the second rib 188 is equal to the height of the first rib 186 with respect to the direction along the rotation axis AX of the reel 33 . The second rib 188 is positioned farther from the rotation axis AX of the reel 33 than the first rib 186 is, and is arranged near the periphery of the outer peripheral surface of the right collar portion 166 . A center axis of the second rib 188 is equal to the rotation axis AX of the reel 33 . The radial width of the second rib 188 is constant in the circumferential direction of the outer peripheral surface of the second rib 188 . The radial width of the second ribs 188 is equal to the radial width of the first ribs 186 .

The position of the first information section 180 , the position of the second information section 182 , and the number of Nth information sections included in the information section 170 differ depending on the type of reel 33 . For example, in another type of reel 33, the first information section 180 of the reel 33 is located at an intermediate position between the first information section 180 and the second information section 182 of the reel 33 described above. , the second information section 182 of another type of reel 33 is arranged at the same position as the second information section 182 of the reel 33 described above. In another type of reel 33 , for example, the information section 170 further comprises a third information section arranged at an intermediate position between the first information section 180 and the second information section 182 .

As shown in FIG. 18, the reel holder 10 further includes a reel attachment portion 192 for rotatably attaching the reel 33 to the reel holder 10 . The reel mounting portion 192 includes a left reel mounting portion 194 and a right reel mounting portion 196 .

The left reel attachment portion 194 is attached to the main cover 28 . Left reel mount 194 includes stopper 198 , cap 200 and compression spring 202 . The stopper 198 has a cylindrical shape with a bottom wall 198a at its right end. An insertion opening 28 a is formed in the main cover 28 , and the stopper 198 is inserted into the insertion opening 28 a from the left side of the main cover 28 . The stopper 198 has a flange 198b located at the left end of the stopper 198. As shown in FIG. The flange 198b can contact the main cover 28 from the left side. This prevents the stopper 198 from coming out of the insertion opening 28a from the left side to the right side. A cap 200 is fixed to the left surface of the main cover 28 . The cap 200 prevents the stopper 198 from slipping out of the insertion opening 28a from the right side to the left side. One end of the compression spring 202 is fixed to the cap 200 , and the other end of the compression spring 202 contacts the bottom wall 198 a of the stopper 198 . When the main cover 28 is closed with respect to the holder housing 26 and the reel 33 is arranged in the accommodation space 26b, the compression spring 202 biases the stopper 198 toward the bearing groove 174a of the inner cylindrical portion 174. do. The stopper 198 is received in the bearing groove 174a and supports the inner cylindrical portion 174 in a slidable manner.

The right reel mounting portion 196 includes a turntable 204 and bearings 206 . An insertion opening 26d is formed in the right surface of the holder housing 26, and the turntable 204 is inserted into the insertion opening 26d. The turntable 204 is arranged with a gap from the holder housing 26 in the insertion opening 26d. The turntable 204 is rotatable around a rotation axis extending in the left-right direction. The rotation axis of the turntable 204 is the same as the rotation axis AX of the reel 33 . The turntable 204 has a turntable body 208 , an engaging member 210 and a shaft member 212 . The turntable body 208 has a substantially disk shape. As shown in FIG. 22, the turntable main body 208 includes a plurality (six in this embodiment) of receiving portions 208a and a plurality of (six in this embodiment) of guide grooves 208b. Note that FIG. 22 shows the holder housing 26 in a state in which the shape of the holder housing 26 is simplified. The number of receiving portions 208 a is the same as the number of protrusions 168 . The receiving portion 208a has a circular cross-sectional shape. The receiving portion 208 a is recessed from the left surface of the turntable body 208 . The six receiving portions 208a 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 receiving portions 208a are arranged around the rotation axis AX of the reel 33 with an interval corresponding to an angle of 60 degrees. The guide groove 208b is connected to the receiving portion 208a. The guide groove 208 b extends around the rotation axis AX of the reel 33 . The guide groove 208b is recessed from the left surface of the turntable body 208. As shown in FIG. The depth of the guide groove 208b gradually increases from one end toward the receiving portion 208a. The guide groove 208b guides the projecting portion 168 toward the receiving portion 208a when the reel 33 is attached to the turntable 204. As shown in FIG.

The engaging member 210 has a substantially cylindrical shape. The engaging member 210 extends leftward from the left surface of the turntable body 208 . As shown in FIG. 18, when the reel 33 is arranged in the housing space 26b, the engaging member 210 is inserted into the inner tubular portion 174 from the right side and engaged with the inner tubular portion 174. As shown in FIG.

The shaft member 212 extends rightward from the right surface of the turntable body 208 . Shaft member 212 has a substantially cylindrical shape. The shaft member 212 is rotatably supported by the holder housing 26 via bearings 206 .

The reel holder 10 includes a rotation detection magnetic sensor 216 (see FIG. 20) and a plurality (two in this embodiment) of rotation detection magnets 218 (see FIG. 21). As shown in FIG. 20, the rotation detection magnetic sensor 216 is fixed to the sensor substrate 220 . In FIG. 20, the rotation detection magnetic sensor 216 is illustrated by a broken line, and the holder housing 26 is illustrated with the shape of the holder housing 26 simplified. A sensor substrate 220 is fixed to the holder housing 26 . Although not shown, the rotation detecting magnetic sensor 216 is arranged at a position overlapping the turntable body 208 (see FIG. 21) in the direction along the rotation axis AX of the reel 33 (see FIG. 18).

As shown in FIG. 21, two rotation detection magnets 218 are fixed to the right surface of the turntable main body 208 . The two rotation detection magnets 218 are arranged around the rotation axis AX of the reel 33 with an interval corresponding to an angle of 180 degrees. The rotation detection magnet 218 rotates together with the turntable body 208 . The rotation detection magnet 218 passes through a position facing the rotation detection magnetic sensor 216 (see FIG. 20) while the turntable 204 is rotating. When facing the rotation detection magnet 218 , the rotation detection magnetic sensor 216 detects, for example, magnetic variation and detects the rotation detection magnet 218 . Thereby, the rotation of the turntable 204, that is, the rotation of the reel 33 is detected.

Next, the type detection unit 158 will be explained. As shown in FIG. 22, the type detector 158 is attached to the holder housing 26. As shown in FIG. Therefore, the type detection unit 158 does not rotate even when the reel 33 (see FIG. 19) rotates. The type detection section 158 includes a first detection section 224 , a second detection section 226 and a third detection section 228 .

The holder housing 26 has a first through hole 230, a second through hole 232, and a third through hole 234 that pass through the holder housing 26. At least part of the first detection section 224 is arranged in the first through hole 230, at least part of the second detection section 226 is arranged in the second through hole 232, and the third detection section 228 At least part of it is arranged in the third through hole 234 . Each of the first detection section 224, the second detection section 226, and the third detection section 228 is electrically connected to the control circuit board 36 (see FIG. 3) by wiring (not shown). The wiring can be arranged outside the housing space 26b (see FIG. 18), and contact with the rotating turntable 204 and the reel 33 (see FIG. 18) can be suppressed. The first detection unit 224 is arranged at a position farther from the rotation axis AX of the reel 33 than the turntable 204 is. The second detection section 226 is arranged at a position farther from the rotation axis AX of the reel 33 than the first detection section 224 is. The third detection portion 228 is arranged at a position farther from the rotation axis AX of the reel 33 than the second detection portion 226 is. As shown in FIG. 24 , the first detection portion 224 is arranged at a position facing the first rib 186 of the reel 33 when the reel 33 is attached to the reel attachment portion 192 . The third detection portion 228 is arranged at a position facing the second rib 188 of the reel 33 when the reel 33 is attached to the reel attachment portion 192 . The second detection portion 226 is arranged at a position facing the outer surface (right surface) of the right collar portion 166 between the first rib 186 and the second rib 188 when the reel 33 is attached to the reel attachment portion 192 . .

As shown in FIG. 23, the first detector 224 has a push-in switch. The first detection section 224 includes a detection switch 238 , a cover member 240 and a pushing member 242 . The detection switch 238 is normally held at a position where the detection switch 238 is not pushed (hereinafter referred to as an initial position).

The cover member 240 is made of, for example, a metal material. The cover member 240 includes a cover portion 244 and a contacted portion 246 . The cover part 244 has a rectangular tubular shape with a bottom wall 244a at one end. The cover portion 244 covers the detection switch 238 so that the inner surface of the bottom wall 244 a contacts the detection switch 238 . The cover portion 244 can push the detection switch 238 . The abutted portion 246 has a hemispherical shape obtained by dividing a sphere in half. The flat surface of the contacted portion 246 is connected to the side surface near the other end of the cover portion 244, and the spherical surface of the contacted portion 246 is exposed.

The pushing member 242 has a base portion 248 and a contact portion 250 . Although not shown, the base 248 is rotatably supported by the holder housing 26 (see FIG. 22). The contact portion 250 has a hemispherical shape obtained by dividing a sphere in half. The flat surface of the contact portion 250 is connected to the side surface of the base portion 248, and the spherical surface of the contact portion 250 is exposed. The spherical surface of the contact portion 250 contacts the spherical surface of the contacted portion 246 .

Each of the second detection section 226 and the third detection section 228 has the same configuration as the first detection section 224 . That is, each of the second detection section 226 and the third detection section 228 has a push-in switch. Detailed descriptions of the second detection unit 226 and the third detection unit 228 are omitted below.

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 protrusion 168 (see FIG. 18) of the reel 33 is moved along the guide groove 208b (see FIG. 22) to the receiving portion 208a (see FIG. 22). ), and insert it into the receiving portion 208a. Thereby, the protrusion 168 engages with the receiving portion 208a. 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. The engaging member 210 of the turntable 204 is inserted into the inner tubular portion 174 and engaged with the inner tubular portion 174 , and the stopper 198 is received in the bearing groove 174 a of the inner tubular portion 174 . Thereby, the reel 33 is attached to the reel attachment portion 192 so as to be rotatable with respect to the holder housing 26 .

As shown in FIG. 24 , when the reel 33 is attached to the reel attachment portion 192 , the first rib 186 abuts against the cover member 240 of the first detection portion 224 , causing the cover member 240 to operate as the detection switch of the first detection portion 224 . Push toward 238. The detection switch 238 of the first detection section 224 detects that the cover member 240 of the first detection section 224 has been pushed. Also, the second rib 188 contacts the cover member 240 of the third detection section 228 and pushes the cover member 240 toward the detection switch 238 of the third detection section 228 . The detection switch 238 of the third detection section 228 detects that the cover member 240 of the third detection section 228 has been pushed. Further, as shown in FIG. 25, in each of the first detection portion 224 and the third detection portion 228, as the cover member 240 is pushed in, the pushing member 242 moves the spherical surface of the contact portion 250 to the contacted portion. 246 while rotating away from the initial position, and when the contact position between the contact portion 250 and the contacted portion 246 reaches the midpoint 246a of the spherical surface of the contacted portion 246, It rotates slightly toward the initial position and then stops. As shown in FIG. 24, the first rib 186 and the pushing member 242 hold the first detecting portion 224 in a state in which the first rib 186 is in contact with the cover member 240 and the detection switch 238 is pushed in. be done. Further, the second rib 188 and the pushing member 242 hold the third detecting portion 228 in a state where the second rib 188 abuts against the cover member 240 and the detection switch 238 is pushed. On the other hand, even if the reel 33 is attached to the reel attachment portion 192, the detection switch 238 of the second detection portion 226 is not pushed.

Next, the control circuit board 36 (see FIG. 3) executes type detection processing for detecting the type of the 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 determines that the main cover 28 is in a closed state, before executing the binding operation of the reinforcing bar binding machine 2, that is, by rotating the feed motor 50 (see FIG. 4), the reel is rotated. 33 is rotated to feed the wire W around the rebar R, the depressed detection switch 238 is detected. In this embodiment, the control circuit board 36 detects that the detection switch 238 of the first detection section 224 and the detection switch 238 of the third detection section 228 are pressed. Next, the control circuit board 36 identifies the type of the reel 33 using the type of the detection switch 238 pushed in and the type identification table. Since the arrangement and the number of information units 170 differ depending on the type of reel 33, the detection switch 238 to be pushed in differs depending on the type of reel 33. FIG. The type identification table shows the relationship between the type of detection switch 238 pushed in and the type of reel 33 . A type identification table is stored in the control circuit board 36 . Finally, 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 specified type of reel 33 .

Next, the operation of removing the reel 33 from the reel mounting portion 192 will be described. First, the lock lever 32 (see FIG. 1) is rotated to open the main cover 28 . Next, the reel 33 is removed from the reel mounting portion 192 . The first rib 186 is separated from the first detection portion 224 and the second rib 188 is separated from the third detection portion 228 . This causes the detection switch 238 to return to its initial position.

(effect)
The reinforcing bar binding machine 2 includes a reel 33 having a bobbin 160 and a wire W wound around the bobbin 160, a reel attachment portion 192 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 192, It has a feed portion 38 , a twist portion 46 , and a support portion 15 that supports the type detection portion 158 . The type detection section 158 detects the type of the reel 33 before the reel 33 is attached to the reel attachment section 192 and the reel 33 rotates.

According to the above configuration, the type of the reel 33 is detected before the reel 33 is attached to the reel attachment portion 192 and the reel 33 rotates. The type of the reel 33 can be detected without the rebar binding machine 2 executing the operation of rotating the reel 33 .

The reinforcing bar binding machine 2 also includes a reel attachment portion 192 for rotatably attaching a reel 33 having 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 the wire 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 192, and a feeding section. 38 , a twisted portion 46 , and a support portion 15 that supports the type detection portion 158 . The type detection section 158 detects the type of the reel 33 before the reel 33 is attached to the reel attachment section 192 and the reel 33 rotates.

According to the above configuration, the same effects as those of the reinforcing bar binding machine 2 can be obtained.

Also, the reel 33 is used by being rotatably attached to the reel attachment portion 192 of the reinforcing bar binding machine 2 . The reel 33 includes a bobbin 160 having

information sections

180 and 182 holding type information indicating the type of the reel 33 and a wire W wound around the bobbin 160 . The

information sections

180 and 182 are detected by the reinforcing bar binding machine 2 before the reel 33 is attached to the reel attachment section 192 and the reel 33 rotates.

According to the above configuration, when the reel 33 is used in the reinforcing bar binding machine 2, the type information indicating the type of the reel 33 is displayed before the reel 33 is attached to the reel attachment portion 192 and the reel 33 is rotated. detected at The type of the reel 33 can be detected by the reinforcing bar binding machine 2 without causing the reinforcing bar binding machine 2 to rotate the reel 33 .

The bobbin 160 has a body portion 162 around which the wire W is wound, a collar portion 166 disposed at one end of the body portion 162, and type information indicating the type of the reel 33. and

information units

180 and 182 that hold . The type detection section 158 detects type information from the

information sections

180 and 182 before the reel 33 is attached to the reel mounting section 192 and the reel 33 rotates.

According to the above configuration, the type of reel 33 can be detected by a simple method of arranging the

information sections

180 and 182 on the collar section 166 .

Also, the type detection unit 158 includes a first detection unit 224 and a second detection unit 226 . The

information sections

180 and 182 are detected by one of the first detection section 224 and the second detection section 226, the first detection section 224, before the reel 33 is attached to the reel attachment section 192 and the reel 33 rotates. A first information section 180 is provided.

According to the above configuration, the first information section 180 is detected by the first detection section 224 . The type of reel 33 can be detected by a simple method of determining whether the first information section 180 is detected by either the first detection section 224 or the second detection section 226 .

Also, the first information portion 180 may be a first rib 186 having an annular shape. A central axis of the first rib 186 is equal to the rotation axis AX of the reel 33 .

According to the above configuration, since the central axis of the first rib 186 is equal to the rotation axis AX of the reel 33, the rotation angle of the reel 33 when the reel 33 is attached to the reel attachment portion 192 does not affect the rotation angle of the reel 33. type can be detected.

Also, the first detection section 224 is arranged at a position farther from the rotation axis AX of the reel 33 than the second detection section 226 with respect to the direction perpendicular to the rotation axis AX of the reel 33 .

When the first detection portion 224 is arranged at the same position as the second detection portion 226 with respect to the direction orthogonal to the rotation axis AX of the reel 33, the first information portion 180 is the annular rib 186. Both the first detection unit 224 and the second detection unit 226 erroneously detect the first information unit 180, and if the first information unit 180 is a partially interrupted rib, the reel 33 may be attached. Depending on the rotation angle, the first detection section 224 and the second detection section 226 may erroneously detect the first information section 180 . According to the above configuration, it is possible to prevent the first detection section 224 and the second detection section 226 from erroneously detecting the first information section 180 .

Also, the first detection unit 224 has a push-in switch that can be pushed by the first information unit 180 .

According to the above configuration, the type of reel 33 can be detected with a simple configuration using a push-in switch.

The first detection unit 224 also includes a detection switch 238 that detects that it has been pushed by the first information unit 180, and a switch between the first information unit 180 and the detection switch 238 when pushed by the first information unit 180. and a cover member 240 disposed therebetween.

According to the above configuration, it is possible to prevent the first information section 180 from sliding with respect to the detection switch 238 when the reel 33 rotates. As a result, it is possible to suppress wear of the detection switch 238 as the reel 33 rotates.

The reel mounting portion 192 also includes a turntable 204 that is rotatably supported by the support portion 15 . The bobbin 160 is fixed to the turntable 204 when the reel 33 is attached to the reel attachment portion 192 .

According to the above configuration, since the turntable 204 is supported by the support portion 15, the turntable 204 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 204 . Thereby, it is possible to suppress the displacement of the rotation axis AX of the reel 33 .

(correspondence relationship)
The first rib 186 is an example of a "rib."

(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. 26, in the second embodiment, each of the first detection section 224, the second detection section 226 and the third detection section 228 of the type detection section 158 further includes a torsion spring 352. As shown in FIG. A torsion spring 352 is fixed to the pushing member 242 . A torsion spring 352 biases the pushing member 242 toward the initial position.

Next, a method for detecting the type of reel 33 will be described. Only the operation of pressing the detection switch 238 will be described below, and the description of the type detection process will be omitted. As shown in FIG. 27 , when the reel 33 is attached to the reel attachment portion 192 , the first rib 186 abuts against the cover member 240 of the first detection portion 224 and causes the cover member 240 to operate as the detection switch of the first detection portion 224 . Push toward 238. The detection switch 238 of the first detection section 224 detects that the cover member 240 of the first detection section 224 has been pushed. Also, the second rib 188 contacts the cover member 240 of the third detection section 228 and pushes the cover member 240 toward the detection switch 238 of the third detection section 228 . The detection switch 238 of the third detection section 228 detects that the cover member 240 of the third detection section 228 has been pushed. As shown in FIG. 25 , in each of the first detection portion 224 and the third detection portion 228 , as the cover member 240 is pushed, the pushing member 242 moves the spherical surface of the contact portion 250 to the contact portion 246 . While being in contact with the spherical surface, it rotates away from the initial position, and when the contact position between the contact portion 250 and the contacted portion 246 reaches the midpoint 246a of the spherical surface of the contacted portion 246, the initial position is reached. rotate in the direction of As shown in FIG. 28, the pressing member 242 returns to the initial position while the spherical surface of the contact portion 250 contacts the spherical surface of the contacted portion 246 due to the biasing force of the torsion spring 352 . When the pushing member 242 returns to the initial position, the pushing member 242 moves the cover member 240 in the direction in which the cover member 240 pushes the detection switch 238 . As shown in FIG. 27, the first rib 186, the pushing member 242, and the torsion spring 352 cause the first detecting portion 224 to move the first detecting portion 224 into a state where the first rib 186 is not in contact with the cover member 240, and the detection switch 238 is pushed. is kept in good condition. In addition, the second rib 188, the pushing member 242, and the torsion spring 352 keep the third detection part 228 in a state in which the second rib 188 is not in contact with the cover member 240 and the detection switch 238 is pushed in. be done. On the other hand, even if the reel 33 is attached to the reel attachment portion 192, the detection switch 238 of the second detection portion 226 is not pushed.

Next, the operation of removing the reel 33 from the reel mounting portion 192 will be described. First, the lock lever 32 (see FIG. 1) is rotated to open the main cover 28 . Next, the reel 33 is removed from the reel mounting portion 192 . The first rib 186 is separated from the first detection portion 224 and the second rib 188 is separated from the third detection portion 228 . Further, when the control circuit board 36 detects that the main cover 28 is not closed via a closed state detection sensor (not shown), it operates a return mechanism (not shown). The pushing member 242 is operated by the return mechanism to rotate away from the initial position. As the cover member 240 returns to its initial position, the detection switch 238 also returns to its initial position.

(effect)
The first detection unit 224 further includes a pushing member 242 that pushes the cover member 240 to a position where the cover member 240 does not come into contact with the first information unit 180 when pushed by the first information unit 180 .

According to the above configuration, it is possible to prevent the first information section 180 from sliding with respect to the cover member 240 when the reel 33 rotates. As a result, it is possible to suppress wear of the cover member 240 as the reel 33 rotates.

(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. As shown in FIG. 29, in the third embodiment, the type detection section 158 includes a first detection section 424, a second detection section 426, and a third detection section 428. As shown in FIG. The type detection unit 158 does not include the first detection unit 224, the second detection unit 226, and the third detection unit 228 of the first embodiment.

The first detection section 424, the second detection section 426 and the third detection section 428 are equipped with laser switches. The first detection section 424, the second detection section 426, and the third detection section 428 are electrically connected to the control circuit board 36 (see FIG. 3) by wiring (not shown). The first detection portion 424 , the second detection portion 426 and the third detection portion 428 are fixed to the holder housing 26 . The first detection portion 424 is arranged at a position facing the first through hole 230 of the holder housing 26 . The second detector 426 is arranged at a position facing the second through hole 232 of the holder housing 26 . The third detector 428 is arranged at a position facing the third through hole 234 of the holder housing 26 . As shown in FIG. 30 , the first detection section 424 is arranged at a position farther from the rotation axis AX of the reel 33 than the turntable 204 is. The second detection portion 426 is arranged at a position farther from the rotation axis AX of the reel 33 than the first detection portion 424 is. The third detection portion 428 is arranged at a position farther from the rotation axis AX of the reel 33 than the second detection portion 426 is.

The first detection section 424 has an irradiation section 430 . The irradiation unit 430 can irradiate the detection object with a laser. Also, the irradiation unit 430 can detect the laser beam reflected from the detection object. When the reel 33 is attached to the reel attachment portion 192 , the irradiation portion 430 is arranged at a position facing the first rib 186 of the reel 33 .

The second detection section 426 has an irradiation section 432 . The irradiation unit 432 can irradiate the detection object with a laser. Also, the irradiation unit 432 can detect the laser reflected from the detection object. When the reel 33 is attached to the reel attachment portion 192 , the irradiation portion 432 is arranged at a position facing the outer surface (right surface) of the right collar portion 166 between the first rib 186 and the second rib 188 . The distance between the irradiation portion 432 and the outer surface (right surface) of the right collar portion 166 is longer than the distance between the irradiation portion 430 and the first rib 186 .

The third detection section 428 has an irradiation section 434 . The irradiation unit 434 can irradiate the detection object with a laser. Also, the irradiation unit 434 can detect the laser beam reflected from the detection object. When the reel 33 is attached to the reel attachment portion 192 , the irradiation portion 434 is arranged at a position facing the second rib 188 . The distance between illuminating portion 434 and second rib 188 is equal to the distance between illuminating portion 430 and first rib 186 .

Next, a method for detecting the type of reel 33 will be described. When the reel 33 is attached to the reel attachment portion 192 , the irradiation portion 430 is arranged at a position facing the first rib 186 of the reel 33 . Also, the irradiation section 432 is arranged at a position facing the outer surface (right surface) of the right collar portion 166 between the first rib 186 and the second rib 188 . Also, the irradiation section 434 is arranged at a position facing the second rib 188 .

Next, the control circuit board 36 (see FIG. 3) executes type detection processing. First, when the control circuit board 36 determines that the main cover 28 (see FIG. 1) is closed, the feed motor 50 (see FIG. 4) is turned on before the binding operation of the reinforcing bar binding machine 2 is executed. Before rotating the reel 33 to feed the wire W around the reinforcing bar R, the control circuit board 36 (see FIG. 3) controls each of the

irradiation units

430, 432, 434 so that the

irradiation unit

430 , 432 and 434, respectively. The laser emitted from the irradiation section 430 is reflected by the first rib 186 and detected by the irradiation section 430 . The laser emitted from the irradiation section 432 is reflected by the outer surface (right surface) of the right collar section 166 and detected by the irradiation section 432 . The laser emitted from the irradiation section 434 is reflected by the second rib 188 and detected by the irradiation section 434 .

Next, the control circuit board 36 determines the distance between the first detection section 424 and the first rib 186 based on the period from when the laser is irradiated from the irradiation section 430 until the laser is detected by the irradiation section 430 . Determine distance. In addition, the control circuit board 36 detects the second detection unit 426 and the outer surface (right surface) of the right flange 166 based on the period from when the laser is irradiated from the irradiation unit 432 to when the laser is detected by the irradiation unit 432 . Determine the distance between Further, the control circuit board 36 determines the distance between the third detection section 428 and the second rib 188 based on the period from when the laser is irradiated from the irradiation section 434 until the laser is detected by the irradiation section 434. identify.

Next, the control circuit board 36 identifies the type of the reel 33 using each distance and type identification table identified for each of the first detection section 424, the second detection section 426, and the third detection section 428. do. Since the arrangement and number of information units 170 differ depending on the type of reel 33 , each distance specified for each of the first detection unit 424 , the second detection unit 426 and the third detection unit 428 differs depending on the type of reel 33 . The type identification table shows the relationship between each distance and the type of reel 33 identified by the first detection section 424 , the second detection section 426 and the third detection section 428 . A type identification table is stored in the control circuit board 36 . Finally, 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 specified type of reel 33 .

(effect)
The first detection section 424 also has a laser switch that detects the distance to the first information section 180 .

According to the above configuration, the first detection section 424 does not come into contact with the first information section 180 when the reel 33 is attached to the reel attachment section 192 . Accordingly, it is possible to suppress wear of the first detection portion 424 due to the rotation of the reel 33 .

(Modification)
In one embodiment, the number of

information units

180 and 182 is not limited to two, and may be one or three or more. Also, the number of

detection units

224, 226, and 228 is not limited to three, and may be two or less, or four or more.

In one embodiment, the information section 170 may further include a third information section. In this case, the third information section may have a third rib having an annular shape. The third rib may be arranged at a position facing the second detection portion 226 when the reel 33 is attached to the reel attachment portion 192 .

In one embodiment, the first information section 180 may be arranged at a position facing the second detection section 226 when the reel 33 is attached to the reel attachment section 192 . Also, the second information section 182 may be arranged at a position facing the second detection section 226 when the reel 33 is attached to the reel attachment section 192 .

In one embodiment, the control circuit board 36 detects ( In the above embodiment, when the detection switch 238 of the first detection section 224 and the detection switch 238 of the third detection section 228 are pushed in, it is determined that the reel 33 is attached to the reel attachment portion 192, and the type detection processing is executed. You may

Claims

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 reinforcing bar binding machine, wherein the type detection section detects the type of the reel before the reel is attached to the reel attachment section and the reel rotates.
The bobbin is
a trunk around which the wire is wound;
a collar portion disposed at one end of the body portion;
an information unit arranged on the collar portion and holding type information indicating the type of the reel,
2. The reinforcing bar binding machine according to claim 1, wherein said type detection unit detects said type information from said information unit before said reel is attached to said reel attachment unit and said reel is rotated.
The type detection unit includes a first detection unit and a second detection unit,
The information section includes a first information section that is detected by one of the first detection section and the second detection section before the reel is mounted on the reel mounting section and the reel rotates. 3. The reinforcing bar binding machine according to claim 2.
The first information part is a rib having an annular shape,
4. The rebar binding machine according to claim 3, wherein the center axis of said rib is equal to the rotation axis of said reel.
The reinforcing bar according to claim 3 or 4, wherein the first detection section is arranged at a position farther from the rotation axis of the reel than the second detection section in a direction orthogonal to the rotation axis of the reel. binding machine.
The reinforcing bar binding machine according to any one of claims 3 to 5, wherein said one of said first detection unit and said second detection unit comprises a push-in switch that can be pushed by said first information unit.
The one of the first detection unit and the second detection unit,
a detection switch that detects that it has been pushed by the first information unit;
7. The cover member according to any one of claims 3 to 6, further comprising a cover member arranged between said first information section and said detection switch when pushed by said first information section. Rebar binding machine.
The one of the first detection section and the second detection section pushes the cover member to a position where the cover member does not come into contact with the first information section when pushed by the first information section. 8. The rebar tying machine of claim 7, further comprising a pushing member.
6. The one of the first detection section and the second detection section according to any one of claims 3 to 5, comprising a laser switch for detecting a distance from the first information section. Rebar binding 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 1 to 9, wherein the bobbin is fixed to the turntable when the reel is attached to the reel attachment portion.
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 reinforcing bar binding machine, wherein the type detection section detects the type of the reel before the reel is attached to the reel attachment section and the reel rotates.
A reel used by being rotatably attached to a reel attachment portion of a reinforcing bar binding machine,
a bobbin having an information section holding type information indicating the type of the reel;
a wire wound around the bobbin;
The reel, wherein the information section is detected by the reinforcing bar binding machine before the reel is attached to the reel attachment section and the reel rotates.