Rebar tying machine and reel

Abstract

To prevent at least one of a reel and a rebar tying machine from becoming large.SOLUTION: The rebar tying machine includes a reel including a bobbin and a wire wound on the bobbin, a reel attachment unit to which the reel is attached, a feed unit to feed the wire wound on the bobbin, a guide unit to guide the wire around the rebar, a twisting unit to twist the wire around the rebar, and a detection unit to detect the type of the reel. The bobbin includes a body portion around which the wire is wound and which has a first internal space into which the reel attachment unit is inserted, and an information section which holds type information indicating the type of the reel. The detection unit is disposed in the first internal space when the reel is attached to the reel attachment unit.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to a rebar tying machine and reel. [Background technology]

[0002] Patent Document 1 discloses a reinforcing bar tying machine. The reinforcing bar tying machine includes a reel having a bobbin and a wire wound on the bobbin, a reel attachment unit to which the reel is attached, a feed unit to feed the wire wound on the bobbin, a guide unit to guide the wire around the reinforcing bar, a twisting unit to twist the wire around the reinforcing bar, and a detection unit to detect the type of reel. The bobbin includes a body around which the wire is wound and has a first internal space into which the reel attachment unit is inserted, a pair of flanges disposed on both ends of the body, and an information unit that protrudes outward from the outer surface of the flanges and holds type information indicating the type of reel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-075730 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned rebar tying machine, the information unit protrudes outward from the outer surface of the flange. This makes the reel larger. Also, since the information unit is disposed on the outer surface of the flange, the detection unit is disposed on the outside of the reel. This makes the rebar tying machine larger.

[0005] In addition, in the above rebar tying machine, the information unit includes at least one of a first rib, a second rib, and a third rib. The detection unit detects the type of reel based on a combination of ribs selected from the first rib, the second rib, and the third rib. In this configuration, multiple ribs are required. This makes the reel structure complicated.

[0006] In addition, in the above-mentioned rebar binding machine, the reel may be removed from the reel attachment unit while the rebar binding machine is in the on state. In this configuration, when the reel is reattached to the reel attachment unit while the rebar binding machine is still in the on state, the arrangement of the wire is different from the arrangement of the wire before the reel was attached to the reel attachment part. When the rebar is bound using the rebar binding machine in a state in which the arrangement of the wire is different before and after the reel is attached, a binding failure of the rebar may occur. For this reason, it is necessary to restrain users from binding rebars using the rebar binding machine.

[0007] In this embodiment, the objective is to provide at least one of a technology that can prevent at least one of the reel and the rebar tying machine from becoming larger, a technology that can prevent the structure of the reel from becoming complicated, and a technology that can prevent a user from tying rebar using a rebar tying machine. [Means for solving the problem]

[0008] The reinforcing bar binding machine disclosed in this specification includes a reel including a bobbin and a wire wound on the bobbin, a reel attachment unit to which the reel is attached, a feed unit to feed the wire wound on the bobbin, a guide unit to guide the wire around the reinforcing bar, a twisting unit to twist the wire around the reinforcing bar, and a detection unit to detect the type of reel. The bobbin includes a body portion around which the wire is wound and which has a first internal space into which the reel attachment unit is inserted, and an information section that holds type information indicating the type of reel. The detection unit is disposed in the first internal space when the reel is attached to the reel attachment unit.

[0009] According to the above configuration, the detection unit is disposed in the first internal space of the reel when the reel is attached to the reel attachment unit. Therefore, it is possible to prevent the rebar binding machine from becoming large in size, compared to a configuration in which the detection unit is not disposed in the first internal space of the reel when the reel is attached to the reel attachment unit.

[0010] Another rebar binding machine disclosed in this specification includes a reel including a bobbin and a wire wound on the bobbin, a reel attachment unit to which the reel is attached, a feeding unit for feeding the wire wound on the bobbin, a guide unit for guiding the wire around the rebar, a twisting unit for twisting the wire around the rebar, and a detection unit for detecting the type of reel. The bobbin includes protrusions having different protruding lengths depending on the type of reel. The detection unit detects the type of reel based on the protruding lengths of the protrusions.

[0011] According to the above configuration, the protrusion length of the protrusions varies depending on the type of reel. The configuration allows the protrusion length to be easily changed, and the reel types can be distinguished while preventing an increase in the number of protrusions. This makes it possible to prevent the reel structure from becoming complicated.

[0012] Yet another rebar tying machine disclosed in this specification includes a reel mounting unit capable of selectively mounting a first reel having a first protrusion having a first protrusion and a wire having a first protrusion length and a second reel having a second protrusion and a wire having a second protrusion length, a feeding unit for feeding the wire, a guide unit for guiding the wire around the rebar, a twisting unit for twisting the wire around the rebar, and a detection unit capable of detecting the first protrusion or the second protrusion.

[0013] According to the above configuration, the protrusion length of the protrusions varies depending on the type of reel. The configuration allows the protrusion length to be easily changed, and the reel types can be distinguished while preventing an increase in the number of protrusions. This makes it possible to prevent the reel structure from becoming complicated.

[0014] The reel disclosed in this specification is used in a rebar tying machine. The reel includes a bobbin and a wire wound on the bobbin. The rebar tying machine includes a reel attachment unit to which the reel is attached, a feed unit that feeds the wire wound on the bobbin, a guide unit that guides the wire around the rebar, a twisting unit that twists the wire around the rebar, and a detection unit that detects the type of the reel. The bobbin includes an information section that holds type information indicating the type of the reel, and a body part around which the wire is wound, the body part having a first internal space into which the reel attachment unit is inserted and in which the detection unit is disposed when the reel attachment unit is inserted.

[0015] According to the above configuration, the detection unit is disposed in the first internal space of the reel when the reel is attached to the reel attachment unit. Therefore, it is possible to prevent the rebar binding machine from becoming large in size, compared to a configuration in which the detection unit is not disposed in the first internal space of the reel when the reel is attached to the reel attachment unit.

[0016] Another reel disclosed herein is used in a rebar binding machine. The reel includes a bobbin and a wire wound on the bobbin. The rebar binding machine includes a reel attachment unit to which the reel is attached, a feeding unit to feed the wire wound on the bobbin, a guide unit to guide the wire around the rebar, a twisting unit to twist the wire around the rebar, and a detection unit to detect the type of the reel. The bobbin has a protrusion having a different protrusion length depending on the type of reel, and the detection unit detects the type of the reel based on the protrusion length.

[0017] According to the above configuration, the protrusion length of the protrusions varies depending on the type of reel. The configuration allows the protrusion length to be easily changed, and the reel types can be distinguished while preventing an increase in the number of protrusions. This makes it possible to prevent the reel structure from becoming complicated.

[0018] Yet another reel disclosed herein is for use in a rebar binding machine. The reel includes a bobbin and a wire wound around the bobbin. The bobbin includes a protrusion having a protrusion length that varies depending on the type of reel.

[0019] According to the above configuration, the protrusion length of the protrusions varies depending on the type of reel. The configuration allows the protrusion length to be easily changed, and the reel types can be distinguished while preventing an increase in the number of protrusions. This makes it possible to prevent the reel structure from becoming complicated.

[0020] Yet another rebar tying machine disclosed in this specification includes a reel including a bobbin and a wire wound on the bobbin, a reel attachment unit to which the reel is attached, a feed unit for feeding the wire wound on the bobbin, a guide unit for guiding the wire around the rebar, a twisting unit for twisting the wire around the rebar, a detection unit for detecting the type of reel, a main power switch for switching the rebar tying machine between an on state and an off state, an alarm unit for alarming error information, and a control unit for controlling the feed unit, the twisting unit, and the alarm unit and for receiving a signal related to the type of reel from the detection unit. The control unit may control the alarm unit when the signal received from the detection unit changes while the rebar tying machine is in an on state.

[0021] According to the above configuration, when the signal received from the detection unit changes while the rebar binding machine is in the on state, for example, when the reel is removed from the reel attachment unit while the rebar binding machine is in the on state, the notification unit notifies the user of the error information. This allows the user to recognize the error information. This makes it possible to prevent the user from reattaching the reel to the reel attachment unit and using the rebar binding machine to bind rebars without positioning the tip of the wire in the correct position.

[0022] Yet another rebar tying machine disclosed in this specification includes a reel attachment unit to which a reel having a bobbin and a wire wound on the bobbin is attached, a detection unit for detecting the type of reel, a main power switch for switching the rebar tying machine between an on state and an off state, a signal receiving unit for receiving a signal regarding the type of reel from the detection unit, and an alarm unit for alarming error information when the signal received by the signal receiving unit changes while the rebar tying machine is in an on state.

[0023] According to the above configuration, by allowing the user to recognize the error information, the user can be prevented from tying reinforcing bars using the reinforcing bar tying machine. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a perspective view of a reinforcing bar binding machine 2 of a first embodiment. [Diagram 2] FIG. 2 is a left side view of the reinforcing bar binding machine 2 of the first embodiment with the left housing 8 and reel cover 10 removed. [Diagram 3] 1 is a perspective view of the reinforcing bar binding machine 2 of the first embodiment with a reel cover 10 in an open state. [Figure 4] 2 is a perspective view of a reel housing section 22 of the reinforcing bar binding machine 2 of the first embodiment. FIG. [Diagram 5] 2 is a cross-sectional view of a reel housing section 22 and a reel 30 of the reinforcing bar binding machine 2 of the first embodiment. FIG. [Figure 6] 2 is a perspective view of a first reel 30A of the first embodiment as viewed from the right side. FIG. [Figure 7] FIG. 2 is a cross-sectional view of a first reel 30A of the first embodiment. [Figure 8] FIG. 2 is a perspective view of a first reel 30A of the first embodiment as viewed from the left side. [Figure 9] 4 is a cross-sectional view of a second reel 30B according to the first embodiment. FIG. [Figure 10] 1 is a cross-sectional view of a third reel 30C according to the first embodiment. [Figure 11]3 is a horizontal cross-sectional view of the right reel attachment unit 36 ​​and the detection unit 150 of the first embodiment. FIG. [Figure 12] 3 is a vertical cross-sectional view of the right reel attachment unit 36 ​​and the detection unit 150 of the first embodiment. FIG. [Figure 13] 1 is a horizontal cross-sectional view of a first reel 30A, a right reel attachment unit 36, and a detection unit 150 in the first embodiment. FIG. [Figure 14] 1 is a horizontal cross-sectional view of the second reel 30B, the right reel attachment unit 36, and the detection unit 150 of the first embodiment. FIG. [Figure 15] 1 is a horizontal cross-sectional view of the third reel 30C, the right reel attachment unit 36, and the detection unit 150 of the first embodiment. FIG. [Figure 16] 4 is an example of a flowchart of a process executed by a control unit 68 in the first embodiment. [Figure 17] 13 is a perspective view of a first reel 30A of a second embodiment as viewed from the right side. FIG. [Figure 18] FIG. 11 is a cross-sectional view of a first reel 30A of a second embodiment. [Figure 19] FIG. 11 is a cross-sectional view of a second reel 30B according to a second embodiment. [Figure 20] FIG. 11 is a cross-sectional view of a third reel 30C according to a second embodiment. [Figure 21] 13 is a horizontal cross-sectional view of the right reel attachment unit 36 ​​and the detection unit 150 of the second embodiment. FIG. [Figure 22] 13 is a horizontal cross-sectional view of a first reel 30A, a right reel attachment unit 36, and a detection unit 150 of the second embodiment. FIG. [Diagram 23] 13 is a horizontal cross-sectional view of the second reel 30B, the right reel attachment unit 36, and the detection unit 150 of the second embodiment. FIG. [Figure 24] 13 is a horizontal cross-sectional view of the third reel 30C, the right reel attachment unit 36, and the detection unit 150 of the second embodiment. FIG. [Diagram 25] 11 is a cross-sectional view of a reel storage section 22 and a reel 30 of a reinforcing bar binding machine 2 of a third embodiment. FIG. [Figure 26] FIG. 11 is a cross-sectional view of a reel 30 according to a third embodiment. [Figure 27]FIG. 11 is a perspective view of a bobbin member 402 according to a third embodiment, as viewed from the left side. [Figure 28] FIG. 11 is a perspective view showing a state in which an information member 404 is attached to a bobbin member 402 according to a third embodiment, as viewed from the right side. [Figure 29] FIG. 11 is a perspective view of an information member 404 according to a third embodiment, as viewed from the left side. [Diagram 30] 11 is a cross-sectional view of a reel storage section 22 and a reel 30 of a reinforcing bar binding machine 2 of a fourth embodiment. FIG. [Diagram 31] FIG. 11 is a cross-sectional view of a reel 30 according to a fourth embodiment. [Diagram 32] FIG. 13 is a perspective view showing a state in which an information member 504 is attached to a bobbin member 502 according to a fourth embodiment, as viewed from the left side. [Diagram 33] 13 is a perspective view showing another state when an information member 504 is attached to a bobbin member 502 of the fourth embodiment, as viewed from the left side. FIG. [Diagram 34] FIG. 13 is a perspective view showing yet another state when the information member 504 is attached to the bobbin member 502 of the fourth embodiment, as viewed from the left side. [Diagram 35] 13 is a flowchart illustrating another example of the process executed by the control unit 68 according to the first embodiment. [Diagram 36] 13 is a flowchart illustrating an example of a type determination process executed by the control unit 68 of the first embodiment. [Figure 37] 13 is yet another example of a flowchart of the process executed by the control unit 68 of the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Representative and non-limiting examples of the present invention will now be described in detail with reference to the drawings. This detailed description is intended simply to provide those skilled in the art with details for implementing the preferred examples of the present invention, and is not intended to limit the scope of the present invention. In addition, the additional features and inventions disclosed below can be used separately or together with other features and inventions to provide further improved rebar tying machines and reels, and methods of making and using the same.

[0026] Furthermore, the combinations of features and steps disclosed in the following detailed description are not essential to the practice of the invention in its broadest sense, but are specifically described only to illustrate representative embodiments of the invention. Furthermore, the various features of the representative embodiments described above and below, and the various features of those described in the independent and dependent claims, do not have to be combined in the exact embodiments described herein, or in the exact order listed, to provide additional and useful embodiments of the invention.

[0027] All features described in the specification and / or claims are intended to be disclosed individually and independently of one another as limitations to the original disclosure and claimed particulars, apart from any configuration of features described in the examples and / or claims. Furthermore, all numerical ranges and group or aggregate descriptions are intended to disclose their intermediate configurations as limitations to the original disclosure and claimed particulars.

[0028] In one or more embodiments, the rebar tying machine includes a reel including a bobbin and a wire wound on the bobbin, a reel attachment unit to which the reel is rotatably attached, a feed unit to feed the wire wound on the bobbin, a guide unit to guide the wire around the rebar, a twisting unit to twist the wire around the rebar, and a detection unit to detect the type of reel. The bobbin includes a body portion around which the wire is wound, the body portion having a first internal space into which the reel attachment unit is inserted, and an information unit that holds type information indicating the type of reel. The detection unit is disposed in the first internal space when the reel is attached to the reel attachment unit.

[0029] In one or more embodiments, the information portion may include a protrusion protruding from the body portion. The protrusion may have a protruding length that varies depending on the type of reel. The protruding length may be type information.

[0030] According to the above configuration, the protrusion length of the protrusions varies depending on the type of reel. The configuration allows the protrusion length to be easily changed, and the reel types can be distinguished while preventing an increase in the number of protrusions. This makes it possible to prevent the reel structure from becoming complicated.

[0031] In one or more embodiments, the protrusion may be disposed in the first interior space.

[0032] According to the above configuration, it is possible to prevent the reel from becoming large in size, compared to a configuration in which the protrusion is not disposed in the first internal space.

[0033] In one or more embodiments, the body may have a cylindrical shape and include a body main body having an internal space, and a partition body that divides the internal space of the body main body into a first internal space and a second internal space different from the first internal space. The protrusion may protrude from the partition body.

[0034] According to the above configuration, by arranging the protrusion on the partition, the protrusion can be easily arranged in the first internal space.

[0035] In one or more embodiments, the reel may rotate about a central axis when mounted on the reel mounting unit, and the protrusion may be disposed on and extend along the central axis.

[0036] According to the above configuration, it is possible to suppress a change in the position of the protrusion relative to the central axis when the reel is rotated.

[0037] In one or more embodiments, the detection unit may include a movable member that is disposed in an initial position when the reel attachment unit is not inserted into the first internal space and that is pressed by the protrusion to move from the initial position when the reel attachment unit is inserted into the first internal space, and a detector that detects the position of the movable member.

[0038] According to the above configuration, when the reel is attached to the reel attachment unit, the position of the movable member relative to the initial position differs depending on the type of reel. The type of reel can be detected by a simple configuration in which the detector detects the position of the movable member.

[0039] In one or more embodiments, the reel attachment unit may include an insertion tube that is inserted into the first interior space. The detector may be disposed within the insertion tube.

[0040] According to the above configuration, it is possible to prevent the detector from coming into contact with the reel and being damaged.

[0041] In one or more embodiments, the insertion tube may include a wall portion that faces the reel when inserted into the first internal space and a through hole that passes through the wall portion. The protrusion may pass through the through hole and press the movable member toward the inside of the insertion tube portion when the insertion tube portion is inserted into the first internal space.

[0042] According to the above configuration, when the reel is attached to the reel attachment unit, the movable member is disposed inside the insertion tube portion, which makes it possible to easily detect the position of the movable member by the detector.

[0043] In one or more embodiments, the detection unit may further include a biasing member that biases the movable member to the initial position.

[0044] According to the above configuration, when the reel is removed from the reel mounting unit, the movable member can be easily returned to the initial position.

[0045] In one or more embodiments, the bobbin may rotate around the reel mounting unit.

[0046] In a configuration in which the bobbin rotates together with the reel attachment unit, a configuration for rotating the reel attachment unit is required, which makes the configuration of the reinforcing bar binding machine complicated. With the above configuration, the configuration of the reinforcing bar binding machine can be prevented from becoming complicated, compared to a configuration in which the bobbin rotates together with the reel attachment unit.

[0047] In one or more embodiments, the hardness of the reel attachment unit may be greater than the hardness of the bobbin.

[0048] According to the above configuration, wear on the reel attachment unit can be suppressed.

[0049] In one or more embodiments, the detection unit may include an abutment that abuts against the bobbin when the reel is attached to the reel attachment unit. The hardness of the abutment may be greater than the hardness of the bobbin.

[0050] According to the above configuration, wear of the contact portion can be suppressed.

[0051] In one or more embodiments, the rebar binding machine may further include a control unit that controls the feeding unit and the twisting unit to perform a binding process of binding the rebars with the wire. The control unit may detect the type of reel by the detection unit during the binding process.

[0052] According to the above configuration, the feeding unit and the twisting unit can be controlled based on the type of reel detected during the bundling process, thereby making it possible to prevent poor bundling of the reinforcing bars.

[0053] In one or more embodiments, the reel is used in a rebar tying machine. The reel includes a bobbin and a wire wound on the bobbin. The rebar tying machine includes a reel attachment unit to which the reel is attached, a feeding unit to feed the wire wound on the bobbin, a guide unit to guide the wire around the rebar, a twisting unit to twist the wire around the rebar, and a detection unit to detect the type of the reel. The bobbin includes an information unit that holds type information indicating the type of the reel, and a body part around which the wire is wound, the body part having a first internal space into which the reel attachment unit is inserted and in which the detection unit is disposed when the reel attachment unit is inserted.

[0054] In one or more embodiments, the information portion may be disposed in the first interior space.

[0055] According to the above configuration, it is possible to prevent the reel from becoming large.

[0056] In one or more embodiments, the bobbin may further include a first member and a second member different from the first member. The information portion may be provided on the first member. The body portion may be provided on the second member.

[0057] According to the above configuration, it is only necessary to prepare different types of first members for different types of reels, and the second member can be made common.

[0058] In one or more embodiments, the reel may rotate about a central axis when attached to the reel attachment unit. The information portion may include a protrusion disposed on the central axis within the first internal space and extending along the central axis. The protrusion may have a protrusion length that varies depending on the type of the reel. The protrusion length may be the type information.

[0059] According to the above configuration, the type of reel can be distinguished by simply changing the protruding length of the protrusion. Also, the position of the protrusion relative to the central axis can be prevented from changing when the reel rotates.

[0060] In one or more embodiments, the first member may be secured to the second member by a retaining mechanism.

[0061] According to the above configuration, it is possible to prevent the first member from accidentally falling off the second member.

[0062] In one or more embodiments, the second member may have a through hole formed therein, and the first member may extend through the through hole.

[0063] If the second member does not have a through hole, it is difficult to fix the first member to the second member in a manner that prevents the first member from slipping out. According to the above configuration, the through hole formed in the second member is utilized to fix the first member to the second member in a manner that prevents the first member from slipping out with a simple configuration.

[0064] In one or more embodiments, the first member may be capable of being inserted into and removed from the through hole from a side opposite the first internal space.

[0065] According to the above configuration, the first member can be attached to the second member and the first member can be removed from the second member more easily.

[0066] In one or more embodiments, the rebar binding machine may include a reel including a bobbin and a wire wound on the bobbin, a reel attachment unit to which the reel is attached, a feeding unit to feed the wire wound on the bobbin, a guide unit to guide the wire around a rebar, a twisting unit to twist the wire around the rebar, a detection unit to detect a type of the reel, and a control unit to control the feeding unit and the twisting unit to perform a binding process of binding the rebar using the wire. The control unit may detect the type of the reel by the detection unit when the rebar binding machine is switched from an off state to an on state.

[0067] According to the above configuration, the type of reel can be detected after the rebar binding machine is switched from the off state to the on state and before the binding process is performed.

[0068] In one or more embodiments, the rebar binding machine may include a reel including a bobbin and a wire wound on the bobbin, a reel attachment unit to which the reel is attached, a feeding unit to feed the wire wound on the bobbin, a guide unit to guide the wire around a rebar, a twisting unit to twist the wire around the rebar, a detection unit to detect a type of the reel, an operation member, and a control unit to control the feeding unit and the twisting unit to perform a binding process of binding the rebar using the wire when the operation member is operated. The control unit may detect the type of the reel by the detection unit when the rebar binding machine is in an on state and after the operation member is operated and before the binding process is performed.

[0069] According to the above configuration, the type of reel can be detected at a timing after the operating member is operated and before the binding process is performed.

[0070] In one or more embodiments, the rebar binding machine may include a reel including a bobbin and a wire wound on the bobbin, a reel attachment unit to which the reel is attached, a feeding unit to feed the wire wound on the bobbin, a guide unit to guide the wire around a rebar, a twisting unit to twist the wire around the rebar, a detection unit to detect a type of the reel, an operation member, and a control unit to control the feeding unit and the twisting unit to perform a binding process of binding the rebar using the wire when the operation member is operated. The control unit may detect the type of the reel by the detection unit when the rebar binding machine is in an on state and after performing the binding process and before the operation member is next operated.

[0071] According to the above configuration, after the bundling process has been performed, the type of reel can be detected at the timing before the operation member is next operated and the bundling process is performed again.

[0072] (First Example) As shown in FIG. 1, the reinforcing bar binding machine 2 uses a wire W to bind a plurality of reinforcing bars R. In the reinforcing bar binding machine 2, wires W of various diameters (e.g., diameters of 0.5 mm to 2.5 mm) are used depending on the diameter of the reinforcing bars R to be used. For example, when binding a thin reinforcing bar R having a diameter of 16 mm or less (e.g., diameter 16 mm), a wire W having a diameter of 1.6 mm or less (e.g., 0.8 mm) is used, and when binding a thick reinforcing bar R having a diameter larger than 16 mm (e.g., diameters of 25 mm or 32 mm), a wire W having a diameter of 1.6 mm or more (e.g., 2.0 mm) is used. Hereinafter, the longitudinal direction of the twisting unit 66 (see FIG. 2) is referred to as the front-rear direction, the direction perpendicular to the front-rear direction is referred to as the up-down direction, and the direction perpendicular to the front-rear direction and the up-down direction is referred to as the left-right direction.

[0073] The rebar binding machine 2 includes a main body 4 and a battery pack BP. The main body 4 includes a right housing 6 that defines the outer shape of the right half of the main body 4, a left housing 8 that defines the outer shape of the left half of the main body 4, and a reel cover 10 that is rotatably attached to the lower front part of the left housing 8.

[0074] The main body 4 includes a twisting unit accommodating section 14, a grip section 16, a battery attachment section 18, a feeding unit accommodating section 20, and a reel accommodating section 22. The twisting unit accommodating section 14, the grip section 16, the battery attachment section 18, and the feeding unit accommodating section 20 are formed by the right housing 6 and the left housing 8. The reel accommodating section 22 is formed by the right housing 6, the left housing 8, and the reel cover 10.

[0075] As shown in Fig. 2, the twisting unit housing 14 extends in the front-rear direction. The grip portion 16 is disposed at the rear lower portion of the twisting unit housing 14. The grip portion 16 is held by a user. The longitudinal direction of the grip portion 16 is slightly inclined with respect to the up-down direction. A trigger 24 is attached to the upper front portion of the grip portion 16 in a retractable manner.

[0076] The battery mounting portion 18 is disposed at the lower end of the grip portion 16. The battery pack BP is detachably attached to the lower end of the battery mounting portion 18. The battery pack BP is attached to the battery mounting portion 18 by sliding the battery pack BP forward and downward relative to the battery mounting portion 18, and is detached from the battery mounting portion 18 by sliding the battery pack BP backward and upward relative to the battery mounting portion 18. The battery pack BP includes a secondary battery, such as a lithium ion battery.

[0077] The feeding unit accommodating section 20 is disposed in a front lower portion of the twisting unit accommodating section 14. The feeding unit accommodating section 20 is disposed in front of the grip section 16.

[0078] The reel housing section 22 is disposed at the lower end of the feeding unit housing section 20. In Fig. 2, the reel housing section 22 is illustrated by a dashed line. The reel housing section 22 is connected to the front end of the battery attachment section 18 via a connection point 23. As shown in Fig. 3, the reel housing section 22 can house a reel 30 including a bobbin 28 and a wire W.

[0079] The reel accommodating section 22 includes a base 34, a right reel attachment unit 36 ​​(see FIG. 4), and a left reel attachment unit 38. The base 34 is formed by the left housing 8 and the reel cover 10. The base 34 has a reel accommodating space 40 therein. The reel 30 is disposed in the reel accommodating space 40.

[0080] As shown in FIG. 4, the right reel attachment unit 36 ​​is formed in the left housing 8. The right reel attachment unit 36 ​​is disposed in the reel accommodating space 40. The right reel attachment unit 36 ​​includes an insertion tube portion 42. The insertion tube portion 42 is made of, for example, a resin material. The insertion tube portion 42 is fixed to the base 34 by a screw 43. The insertion tube portion 42 does not rotate relative to the base 34. The insertion tube portion 42 supports the reel 30 so that it can rotate.

[0081] The insertion tube portion 42 includes a tube portion 44 and a bottom wall portion 46. The tube portion 44 includes a first tube portion 44a having a substantially cylindrical shape and a second tube portion 44b having a substantially truncated cone shape. One end of the first tube portion 44a is connected to the base portion 34. The first tube portion 44a extends leftward from the base portion 34. The second tube portion 44b extends leftward from the other end of the first tube portion 44a. The diameter of the second tube portion 44b becomes smaller toward the left. Therefore, the reel 30 is guided by the second tube portion 44b and smoothly inserted into the insertion tube portion 42. The bottom wall portion 46 is disposed at the left end of the second tube portion 44b. The bottom wall portion 46 closes the opening at the left end of the second tube portion 44b.

[0082] As shown in FIG. 5, the left reel mounting unit 38 is formed on the reel cover 10. When the reel cover 10 is closed, the left reel mounting unit 38 is disposed in the reel accommodating space 40. The left reel mounting unit 38 has a generally truncated cone shape. The left reel mounting unit 38 does not rotate relative to the base 34. The left reel mounting unit 38 rotatably supports the reel 30. The left reel mounting unit 38 is also biased rightward toward the reel 30 by the biasing force of the biasing spring 48. This causes the left reel mounting unit 38 to be pressed against the reel 30. This prevents the insertion tube portion 42 and the left reel mounting unit 38 from coming off the reel 30 while the reel 30 is rotating.

[0083] As shown in FIG. 1, the rebar binding machine 2 further includes a main power switch 50, a display unit 52, a mode changeover switch 54, a binding force increase switch 56, and a binding force reduction switch 58. The main power switch 50, the display unit 52, the mode changeover switch 54, the binding force increase switch 56, and the binding force reduction switch 58 are arranged on the rear surface of the feed unit housing section 20. The main power switch 50 is operated by a user. The main power switch 50 switches the rebar binding machine 2 between an on state and an off state. For example, when the main power switch 50 is a rocker switch, when the main power switch 50 is in an on state, power is supplied to the rebar binding machine 2 from a battery pack BP described later, and the rebar binding machine 2 can operate. When the main power switch 50 is in an off state, the power supply from the battery pack BP to the rebar binding machine 2 is cut off, and the rebar binding machine 2 cannot operate. The display unit 52 displays information related to the rebar binding machine 2. The display unit 52 is visually recognized by the user.

[0084] The mode changeover switch 54 switches the mode of the reinforcing bar binding machine 2 between a single shot mode and a continuous shot mode. When the reinforcing bar binding machine 2 is in the single shot mode, the reinforcing bar binding machine 2 binds a plurality of reinforcing bars R using the wire W every time the trigger 24 is pulled. When the reinforcing bar binding machine 2 is in the continuous shot mode, the reinforcing bar binding machine 2 continuously binds a plurality of reinforcing bars R using the wire W while the trigger 24 is kept pulled in.

[0085] The binding force increase switch 56 increases the set value of the binding force of the wire W by the rebar binding machine 2. The binding force reduction switch 58 reduces the set value of the binding force of the wire W by the rebar binding machine 2. When the binding force increase switch 56 is operated, the set value of the binding force of the wire W increases by one step, and when the binding force reduction switch 58 is operated, the set value of the binding force of the wire W decreases by one step.

[0086] As shown in FIG. 2, the rebar binding machine 2 further includes a feeding unit 60, a guiding unit 62, a cutting unit 64, a twisting unit 66, and a control unit 68.

[0087] The feed unit 60 is accommodated in the feed unit accommodating section 20. The feed unit 60 includes a feed motor 72 and a feed roller unit 74. The feed motor 72 is, for example, a brushless motor. The feed motor 72 rotates by power supplied from a battery pack BP. The feed roller unit 74 is connected to the feed motor 72 via a reducer (not shown). When the feed motor 72 rotates, the feed roller unit 74 rotates. The feed roller unit 74 rotates in the forward direction to pull out the wire W from the bobbin 28 and feed it forward and upward toward the guide unit 62. The feed roller unit 74 rotates in the reverse direction to pull the wire W back toward the bobbin 28.

[0088] The guide unit 62 is fixed to the front end of the twisting unit housing 14. The guide unit 62 includes an upper curl guide 78 and a lower curl guide 80. The reinforcing bar R is disposed between the upper curl guide 78 and the lower curl guide 80 during bundling. The wire W fed from the feed roller unit 74 is first guided by the upper curl guide 78 and passes through the upper curl guide 78 from rear to front. While the wire W passes through the upper curl guide 78, the upper curl guide 78 gives the wire W a downward curling tendency. After passing through the upper curl guide 78, the wire W is guided by the lower curl guide 80 and passes through the lower curl guide 80 from front to rear. The wire W then moves rearward and upward. As a result, the wire W is wound around the reinforcing bar R.

[0089] The cutting unit 64 is accommodated in the twisting unit accommodating portion 14. The cutting unit 64 includes a cutter (not shown) that cuts the wire W fed from the feeding unit 60 to the guiding unit 62. The wire W is cut by the rotation of the cutter.

[0090] The twisting unit 66 is accommodated in the twisting unit accommodation section 14. The twisting unit 66 includes a twisting motor 84, a sleeve unit 86, and a gripping clamp 88. The twisting motor 84 is located on the upper side of the grip section 16. The twisting motor 84 is, for example, a brushless motor. The twisting motor 84 rotates by power supplied from the battery pack BP. When the twisting motor 84 rotates, the sleeve unit 86 moves in the front-rear direction or rotates around a rotation axis extending in the front-rear direction. The gripping clamp 88 is located in the front of the twisting unit 66. When the sleeve unit 86 moves forward, the gripping clamp 88 grips both ends of the wire W around the rebar R. When the sleeve unit 86 further rotates in the forward direction from this state, the gripping clamp 88 rotates integrally with the sleeve unit 86. As a result, the gripping clamp 88 twists the wire W. As a result, the reinforcing bar R is bound by the wire W. Furthermore, when the sleeve unit 86 rotates in the reverse direction, the wire W is released from the gripping clamp 88 and the sleeve unit 86 moves rearward.

[0091] The control unit 68 is housed in the battery attachment section 18. The control unit 68 includes a control circuit board 92 that includes an MCU (not shown) and a switching element (not shown). When the rebar binding machine 2 is switched from an off state to an on state, the control unit 68 controls the feed motor 72 to execute an initialization process that adjusts the position of the tip of the wire W. In addition, when the trigger 24 is pulled by the user while the rebar binding machine 2 is in the on state, the control unit 68 controls the feed motor 72 and the twisting motor 84 to execute a binding process that binds the rebar R using the wire W.

[0092] In the reinforcing bar binding machine 2, wires W of various thicknesses are selected according to the diameter of the reinforcing bar R used. In addition, wires W covered with a coating (for example, a resin material), stainless steel wires W, plated wires W, and annealed wires W are selected according to the environment in which the reinforcing bar R is used. Furthermore, wires W with an adjusted winding amount, for example, wires W with a large winding amount and wires W with a small winding amount, are selected according to the frequency of use of the reinforcing bar binding machine 2. In addition, a resin bobbin 28 or a metal bobbin 28 is selected. The types of the reels 30 may be distinguished according to the type of the wire W, the amount of the wire W wound, the material of the bobbin 28, or a combination of these. In this embodiment, the shape of the bobbin 28 differs depending on the type of the reel 30.

[0093] 6 to 10, three types of reels 30, namely, a first reel 30A, a second reel 30B, and a third reel 30C, are used in the rebar binding machine 2. Hereinafter, the bobbin 28 used in the first reel 30A will be referred to as the first bobbin 28A, the bobbin 28 used in the second reel 30B will be referred to as the second bobbin 28B, and the bobbin 28 used in the third reel 30C will be referred to as the third bobbin 28C.

[0094] 6, the first reel 30A includes a wire W and a first bobbin 28A. The first bobbin 28A includes a body portion 100, a left flange portion 102, a right flange portion 104, and a first information portion 106.

[0095] As shown in Fig. 7, the body 100 includes a body main body 110 and a partition 112. The body main body 110 has a substantially cylindrical shape. A central axis AX1 of the body main body 110 extends in the left-right direction. The wire W is wound in multiple layers on an outer circumferential surface 110a of the body main body 110. The body main body 110 has an internal space 114. The internal space 114 is defined by an inner circumferential surface 110b of the body main body 110.

[0096] The body 110 includes a protruding portion 115a and a receiving portion 115b. The protruding portion 115a is located at the left end of the body 110. The protruding portion 115a protrudes leftward beyond the left flange 102. The protruding portion 115a has a generally cylindrical shape. The receiving portion 115b is located at the right end of the body 110. In the two first reels 30A, the receiving portion 115b of one first reel 30A receives the protruding portion 115a of the other first reel 30A. This allows multiple first reels 30A to be stacked.

[0097] As shown in FIG. 8, the trunk body 110 has a through hole 110c. The through hole 110c penetrates the protruding portion 115a in the radial direction of the first bobbin 28A. The left end of the through hole 110c is not closed. The vicinity of the starting end of the wire W penetrates the through hole 110c. The starting end of the wire W has a retaining shape, for example, a loop shape, and abuts against the inner circumferential surface 110b of the trunk body 110. This prevents the starting end of the wire W from coming off the first bobbin 28A.

[0098] As shown in FIG. 7, the partition 112 is disposed in the internal space 114. The partition 112 has a plate shape. The partition 112 is disposed on a plane including the up-down direction and the front-rear direction. The partition 112 is substantially perpendicular to the central axis AX1. The partition 112 is connected to the inner peripheral surface 110b. The partition 112 divides the internal space 114 into a first internal space 116 and a second internal space 118. The first internal space 116 is disposed on the right side of the partition 112. The second internal space 118 is disposed on the left side of the partition 112. The length of the first internal space 116 in the left-right direction is longer than the length of the second internal space 118 in the left-right direction. As shown in FIG. 5, the partition 112 faces the bottom wall portion 46 of the insertion tube portion 42. The partition 112 also abuts against the bottom wall portion 46.

[0099] The insertion tube 42 of the right reel mounting unit 36 ​​is inserted into the first internal space 116 from the right side of the first reel 30A. The left reel mounting unit 38 is inserted into the second internal space 118 from the left side of the first reel 30A. As a result, the first reel 30A is supported by the insertion tube 42 and the left reel mounting unit 38. The first reel 30A can rotate around the insertion tube 42 and the left reel mounting unit 38. As a result, the first reel 30A slides on the insertion tube 42 and the left reel mounting unit 38. The first reel 30A rotates around the central axis AX1. Additionally, the hardness of the insertion tube 42 and the hardness of the left reel mounting unit 38 are each higher than the hardness of the first bobbin 28A. Therefore, by the first reel 30A rotating around the insertion tube portion 42 and the left reel mounting unit 38, wear on the insertion tube portion 42, the left reel mounting unit 38, and the operated portion 162 of the movable member 152 (see Figure 11) described later is suppressed.

[0100] As shown in Fig. 7, the left flange 102 and the right flange 104 have a wide annular shape. The left flange 102 is disposed at the left end of the barrel body 110. The left flange 102 extends radially outward from the outer circumferential surface 110a of the barrel body 110. The right flange 104 is disposed at the right end of the barrel body 110. The right flange 104 extends radially outward from the outer circumferential surface 110a of the barrel body 110. The wire W is disposed between the left flange 102 and the right flange 104.

[0101] As shown in Fig. 8, the left flange 102 includes a left alignment portion 102a and a notch portion 102b. The left alignment portion 102a is a hole penetrating the left flange 102 in the left-right direction. The left alignment portion 102a extends from the outer peripheral edge of the left flange 102 to the outer peripheral surface 110a of the trunk main body 110. The left alignment portion 102a is disposed near the through hole 110c. The vicinity of the end of the wire W penetrates the left alignment portion 102a.

[0102] The cutout portion 102b is a hole penetrating the left flange portion 102 in the left-right direction. The cutout portion 102b has a substantially triangular cross section. The cutout portion 102b is recessed from the outer peripheral edge of the left flange portion 102. After the wire W is wound around the first bobbin 28A using a wire winder (not shown), the cutout portion 102b comes into contact with the wire W to cut the wire W. This forms an end of the wire W.

[0103] The right flange 104 includes a right alignment portion 104a. The right alignment portion 104a is a hole penetrating the right flange 104 in the left-right direction. The right alignment portion 104a extends from the outer peripheral edge of the right flange 104 to the outer peripheral surface 110a of the trunk body 110. The right alignment portion 104a is aligned with the left alignment portion 102a in the left-right direction. The left alignment portion 102a and the right alignment portion 104a receive a wire winder (not shown) when winding the wire W around the first bobbin 28A. This aligns the wire winder with respect to the first bobbin 28A.

[0104] As shown in FIG. 7, the first information portion 106 is disposed in the first internal space 116. The first information portion 106 is disposed radially inside the layer of the wire W wound around the trunk main body 110. The first information portion 106 includes a first protrusion 122. The first protrusion 122 protrudes rightward from the partition body 112. In the left-right direction, the tip of the first protrusion 122 is disposed closer to the partition body 112 than the receiving portion 115b. This prevents the first protrusion 122 from contacting the protruding portion 115a when a plurality of first reels 30A are stacked. The first protrusion 122 is disposed on the central axis AX1. The first protrusion 122 extends in the left-right direction along the central axis AX1. The first protrusion 122 has a first protruding length 124 along the central axis AX1.

[0105] 9, the second reel 30B includes a wire W and a second bobbin 28B. The second bobbin 28B includes a body portion 100, a left flange portion 102, and a right flange portion 104. The second bobbin 28B also includes a second conductor portion 128 instead of the first conductor portion 106 of the first bobbin 28A.

[0106] The second information portion 128 is disposed in the first internal space 116. The second information portion 128 is disposed radially inward of the layer of the wire W wound around the trunk body 110. The second information portion 128 includes a second protrusion 130. The connection position of the second protrusion 130 to the partition body 112 is the same as the connection position of the first protrusion 122 to the partition body 112. The extension direction of the second protrusion 130 is the same as the extension direction of the first protrusion 122. In the left-right direction, the tip of the second protrusion 130 is disposed closer to the partition body 112 than the receiving portion 115b. This prevents the second protrusion 130 from abutting against the protrusion 115a when multiple second reels 30B are stacked. The second protrusion 130 has a second protrusion length 132 along the central axis AX1. The second protrusion length 132 is different from the first protrusion length 124. The second protruding length 132 is longer than the first protruding length 124 .

[0107] 10, the third reel 30C includes a wire W and a third bobbin 28C. The third bobbin 28C includes a body portion 100, a left flange portion 102, and a right flange portion 104. The third bobbin 28C also includes a third conductor portion 136 instead of the first conductor portion 106 of the first bobbin 28A.

[0108] The third information portion 136 is disposed in the first internal space 116. The third information portion 136 is disposed radially inward of the layer of the wire W wound around the trunk body 110. The third information portion 136 includes a third protrusion 138. The connection position of the third protrusion 138 to the partition body 112 is the same as the connection position of the first protrusion 122 to the partition body 112. The extension direction of the third protrusion 138 is the same as the extension direction of the first protrusion 122. In the left-right direction, the tip of the third protrusion 138 is disposed closer to the partition body 112 than the receiving portion 115b. This prevents the third protrusion 138 from abutting against the protrusion 115a when multiple third reels 30C are stacked. The third protrusion 138 has a third protrusion length 140 along the central axis AX1. The third protrusion length 140 is different from each of the first protrusion length 124 and the second protrusion length 132. The third protrusion length 140 is longer than the second protrusion length 132. Therefore, the first protrusion length 124 is type information indicating the type of the first reel 30A. Moreover, the second protrusion length 132 is type information indicating the type of the second reel 30B. Furthermore, the third protrusion length 140 is type information indicating the type of the third reel 30C.

[0109] 11, the rebar binding machine 2 further includes a detection unit 150. The detection unit 150 detects the type of the reel 30. The detection unit 150 is supported by the right reel attachment unit 36. The detection unit 150 includes a movable member 152, a biasing member 154, and a detector 156.

[0110] The movable member 152 includes a base 160 and an operated portion 162. The base 160 is made of, for example, a resin material. The base 160 is disposed inside the insertion tube portion 42. The base 160 has a generally cylindrical shape. As shown in FIG. 12, the base 160 includes two guide ribs 160a extending in the left-right direction. The base 34 includes two rib receiving portions 34a extending in the left-right direction, and the guide ribs 160a are received in the rib receiving portions 34a so as to be slidable in the left-right direction. As a result, the base 160 is supported by the base 34 so as to be movable in the left-right direction. As shown in FIG. 11, the base 160 includes a holding groove 160b recessed from the right end of the base 160, and the base 34 of the reel accommodating portion 22 includes a holding protrusion 34b protruding in the left direction. The holding protrusion 34b is inserted into the biasing member 154, which is inserted into the holding groove 160b. The biasing member 154 is sandwiched between the base 34 of the reel accommodating section 22 and the base 160 of the movable member 152. As a result, the base 160 is biased leftward by the biasing member 154. The movable member 152 is located in its initial position when no rightward force is being applied. When the movable member 152 is located in its initial position, the base 160 abuts against the bottom wall 46 in the left-right direction.

[0111] The operated part 162 is made of a metal material, for example, iron. The hardness of the operated part 162 is higher than the hardness of the bobbin 28. The operated part 162 is fixed to the left end of the base part 160. The operated part 162 has a substantially cylindrical shape. The bottom wall part 46 of the insertion tube part 42 has a through hole 46a penetrating the bottom wall part 46 in the left-right direction, and the operated part 162 is disposed in the through hole 46a when the movable member 152 is located at the initial position. The operated part 162 and the through hole 46a are disposed on the central axis AX1.

[0112] The detector 156 is disposed inside the insertion tube portion 42. The detector 156 includes a magnet 166, a substrate 168, and a plurality of magnetic sensors 170 (three in this embodiment).

[0113] The magnet 166 is fixed to a side surface of the base 160. The magnet 166 moves integrally with the movable member 152. The magnet 166 is, for example, a permanent magnet.

[0114] The substrate 168 is fixed to the insertion tube portion 42. The substrate 168 is disposed on the rear side of the movable member 152. The substrate 168 is disposed along a plane including the left-right direction and the up-down direction. The substrate 168 has an opposing surface 168a and a non-opposing surface 168b opposite to the opposing surface 168a. The opposing surface 168a faces the movable member 152 in the front-rear direction. A wiring 169a (see FIG. 2) connected to the substrate 168 is fixed to the non-opposing surface 168b via an adhesive 169b. As shown in FIG. 2, the wiring 169a passes through the connection portion 23 between the battery attachment portion 18 and the reel housing portion 22 and extends to the control unit 68. The substrate 168 (see FIG. 11) is electrically connected to the control unit 68 via the wiring 169a.

[0115] As shown in Fig. 11, three magnetic sensors 170 are fixed to the opposing surface 168a. The three magnetic sensors 170 are aligned in a row in the left-right direction. Each magnetic sensor 170 detects the magnet 166 when it faces the magnet 166 in the front-rear direction. A signal detected by each magnetic sensor 170 is constantly sent to the control unit 68 (see Fig. 2). The signal includes a magnet detection signal indicating that the magnetic sensor 170 has detected the magnet 166, and a magnet non-detection signal indicating that the magnetic sensor 170 has not detected the magnet 166.

[0116] The three magnetic sensors 170 include a first magnetic sensor 170a, a second magnetic sensor 170b, and a third magnetic sensor 170c. The second magnetic sensor 170b is disposed to the right of the first magnetic sensor 170a. The third magnetic sensor 170c is disposed to the right of the second magnetic sensor 170b. When the movable member 152 is located at the initial position, the magnet 166 is disposed to the left of the first magnetic sensor 170a. At this time, the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c do not face the magnet 166 in the front-rear direction. When the movable member 152 is located at the initial position, the distance between the first magnetic sensor 170a and the magnet 166 in the left-right direction is approximately the same as the first protrusion length 124 of the first protrusion 122. When the movable member 152 is located at the initial position, the distance between the second magnetic sensor 170b and the magnet 166 in the left-right direction is approximately the same as the second protrusion length 132 of the second protrusion 130. When the movable member 152 is located at the initial position, the distance between the third magnetic sensor 170c and the magnet 166 in the left-right direction is approximately the same as the third protrusion length 140 of the third protrusion 138.

[0117] As shown in FIG. 13, when the first reel 30A is attached to the right reel attachment unit 36, the insertion tube portion 42 is inserted into the first internal space 116 of the first reel 30A. As a result, the first protrusion 122 penetrates the through hole 46a of the insertion tube portion 42 and presses the operated portion 162 rightward toward the inside of the insertion tube portion 42. The movable member 152 moves rightward on the central axis AX1 and stops at a position where the magnet 166 faces the first magnetic sensor 170a in the front-rear direction. Therefore, the first magnetic sensor 170a detects the magnet 166. A magnet detection signal indicating that the first magnetic sensor 170a detects the magnet 166 is sent to the control unit 68 (see FIG. 2), and the control unit 68 detects that the first reel 30A is attached to the right reel attachment unit 36. At this time, a magnet non-detection signal indicating that the second magnetic sensor 170b does not detect the magnet 166 and a magnet non-detection signal indicating that the third magnetic sensor 170c does not detect the magnet 166 are continuously sent to the control unit 68. In addition, when the insertion tube portion 42 is inserted into the first internal space 116, the detection unit 150 is disposed in the first internal space 116.

[0118] As shown in FIG. 14, when the second reel 30B is attached to the right reel attachment unit 36, the insertion tube portion 42 is inserted into the first internal space 116 of the second reel 30B. As a result, the second protrusion 130 penetrates the through hole 46a of the insertion tube portion 42 and presses the operated portion 162 rightward toward the inside of the insertion tube portion 42. The movable member 152 moves rightward on the central axis AX1 and stops at a position where the magnet 166 faces the second magnetic sensor 170b in the front-rear direction. Therefore, the second magnetic sensor 170b detects the magnet 166. A magnet detection signal indicating that the second magnetic sensor 170b detects the magnet 166 is sent to the control unit 68 (see FIG. 2), and the control unit 68 detects that the second reel 30B is attached to the right reel attachment unit 36. At this time, a magnet non-detection signal indicating that the first magnetic sensor 170a does not detect the magnet 166 and a magnet non-detection signal indicating that the third magnetic sensor 170c does not detect the magnet 166 are continuously sent to the control unit 68.

[0119] As shown in FIG. 15, when the third reel 30C is attached to the right reel attachment unit 36, the insertion tube portion 42 is inserted into the first internal space 116 of the third reel 30C. As a result, the third protrusion 138 penetrates the through hole 46a of the insertion tube portion 42 and presses the operated portion 162 rightward toward the inside of the insertion tube portion 42. The movable member 152 moves rightward on the central axis AX1 and stops at a position where the magnet 166 faces the third magnetic sensor 170c in the front-rear direction. Therefore, the third magnetic sensor 170c detects the magnet 166. A magnet detection signal indicating that the third magnetic sensor 170c detects the magnet 166 is sent to the control unit 68 (see FIG. 2), and the control unit 68 detects that the third reel 30C is attached to the right reel attachment unit 36. At this time, a magnet non-detection signal indicating that the first magnetic sensor 170a does not detect the magnet 166 and a magnet non-detection signal indicating that the second magnetic sensor 170b does not detect the magnet 166 are continuously sent to the control unit 68.

[0120] When the rebar binding machine 2 is switched from the OFF state to the ON state, the control unit 68 executes the process shown in FIG.

[0121] In S2 of FIG. 16, the control unit 68 determines whether or not a magnet detection signal has been received from the detector 156. The control unit 68 receives signals (i.e., magnet detection signals or magnet non-detection signals) from each of the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c. When the control unit 68 has not received a magnet detection signal from the detector 156, that is, when the signals received from each of the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c are magnet non-detection signals (NO in S2), the control unit 68 proceeds to S4. On the other hand, when the control unit 68 receives a magnet detection signal from the detector 156 (YES in S2), the control unit 68 proceeds to S6.

[0122] In S4, the control unit 68 notifies the user of error information. For example, the control unit 68 displays on the display unit 52 first error information indicating that the reel 30 is not attached.

[0123] In S6, the control unit 68 controls the feed motor 72 to execute an initialization process for adjusting the position of the tip of the wire W. Specifically, the control unit 68 operates the feed motor 72 by a predetermined number of revolutions to rotate the feed roller unit 74 in the forward direction, thereby drawing out the wire W from the bobbin 28. Next, the control unit 68 operates the twisting motor 84 to move the sleeve unit 86 backward, thereby operating the cutting unit 64 by the sleeve unit 86. As a result, the wire W is cut. Next, the control unit 68 operates the twisting motor 84 to return the sleeve unit 86 to its initial position. Next, the control unit 68 operates the feed motor 72 by a predetermined number of revolutions to rotate the feed roller unit 74 in the reverse direction, thereby drawing back the wire W toward the bobbin 28.

[0124] In S8, the control unit 68 judges whether the signal received from the detector 156, i.e., the signal received from each of the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c, has not changed from a magnet detection signal to a magnet non-detection signal. When the signal received from the detector 156 changes from a magnet detection signal to a magnet non-detection signal, i.e., when one of the signals received from each of the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c changes from a magnet detection signal to a magnet non-detection signal (NO in S8), the control unit 68 proceeds to S10. On the other hand, when the signal received from the detector 156 does not change from a magnet detection signal to a magnet non-detection signal, i.e., when all of the signals received from each of the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c do not change from a magnet detection signal to a magnet non-detection signal (YES in S8), the control unit 68 proceeds to S12.

[0125] In S10, the control unit 68 notifies the user of error information. For example, the control unit 68 displays on the display unit 52 second error information indicating that the reel 30 has been removed.

[0126] In S12, the control unit 68 determines whether the trigger 24 is pulled. If the trigger 24 is pulled (YES in S12), the control unit 68 proceeds to S14. On the other hand, if the trigger 24 is not pulled (NO in S12), the control unit 68 returns to S8.

[0127] In S14, the control unit 68 controls the feed motor 72 and the twisting motor 84 to perform a bundling process for bundling the reinforcing bar R with the wire W. Specifically, first, the control unit 68 controls the detector 156 and detects the type of the reel 30 based on a signal received from the detector 156. Next, the control unit 68 sets conditions for the bundling process, such as the number of rotations of the feed motor 72, the upper limit of the torque of the feed motor 72, and the upper limit of the torque of the twisting motor 84, based on the detected type of the reel 30. Next, the control unit 68 operates the feed motor 72 based on the set number of rotations of the feed motor 72 to rotate the feed roller unit 74 in the forward direction. As a result, the wire W is fed out and wound around the reinforcing bar R. Next, the control unit 68 operates the twisting motor 84 to move the sleeve unit 86 forward. As a result, the tip of the wire W is gripped by the gripping clamp 88. Next, the control unit 68 operates the feed motor 72 based on the set upper limit value of the torque of the feed motor 72 to rotate the feed roller unit 74 in the reverse direction. As a result, the wire W is pulled back, and the diameter of the wire W is reduced to contact the reinforcing bar R. Next, the control unit 68 operates the twisting motor 84 to move the sleeve unit 86 forward. As a result, the wire W is gripped by the gripping clamp 88 between the upper curl guide 78 and the cutting unit 64. Next, the control unit 68 operates the twisting motor 84 to further move the sleeve unit 86 forward. The twisting unit 66 operates the cutting unit 64, so that the wire W is cut by the cutting unit 64. Next, the control unit 68 operates the twisting motor 84 based on the set upper limit value of the torque of the twisting motor 84 to rotate the sleeve unit 86 in the forward direction. The wire W is twisted by the rotation of the gripping clamp 88. Finally, the control unit 68 operates the twisting motor 84 to release the wire W from the gripping clamp 88 and return the twisting unit 66 to its initial position.

[0128] In S16, the control unit 68 determines whether the rebar binding machine 2 is off. When the rebar binding machine 2 is not off (NO in S16), the control unit 68 returns to S8. On the other hand, when the rebar binding machine 2 is off (YES in S16), the control unit 68 ends the process shown in FIG.

[0129] Alternatively, the control unit 68 may execute the process shown in FIG. 35 instead of the process in FIG. 16 when the rebar binding machine 2 is switched from the OFF state to the ON state.

[0130] In S22, the control unit 68 executes a type determination process (see FIG. 36). The type determination process will be described below with reference to FIG.

[0131] In S42, the control unit 68 acquires signals (ie, magnet detection signals or magnet non-detection signals) from each of the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c.

[0132] In S44, the control unit 68 judges whether the signal acquired in S42 corresponds to the first signal pattern. In this embodiment, the first signal pattern is a signal pattern indicating that the first magnetic sensor 170a outputs a magnet detection signal, the second magnetic sensor 170b outputs a magnet non-detection signal, and the third magnetic sensor 170c outputs a magnet non-detection signal. If the signal corresponds to the first signal pattern (YES), the process proceeds to S46. In S46, the control unit 68 judges that the first reel 30A is attached. After S46, the process proceeds to S56. If the signal does not correspond to the first signal pattern in S44 (NO), the process proceeds to S48.

[0133] In S48, the control unit 68 judges whether the signal acquired in S42 corresponds to the second signal pattern. In this embodiment, the second signal pattern is a signal pattern indicating that the first magnetic sensor 170a outputs a magnet non-detection signal, the second magnetic sensor 170b outputs a magnet detection signal, and the third magnetic sensor 170c outputs a magnet non-detection signal. If the signal corresponds to the second signal pattern (YES), the process proceeds to S50. In S50, the control unit 68 judges that the second reel 30B is attached. After S50, the process proceeds to S56. If the signal does not correspond to the second signal pattern in S48 (NO), the process proceeds to S52.

[0134] In S52, the control unit 68 judges whether the signal acquired in S42 corresponds to the third signal pattern. In this embodiment, the third signal pattern is a signal pattern indicating that the first magnetic sensor 170a outputs a magnet non-detection signal, the second magnetic sensor 170b outputs a magnet non-detection signal, and the third magnetic sensor 170c outputs a magnet detection signal. If the signal corresponds to the third signal pattern (YES), the process proceeds to S54. In S54, the control unit 68 judges that the third reel 30C is attached. After S54, the process proceeds to S56. If the signal does not correspond to the third signal pattern in S52 (NO), the process proceeds to S58.

[0135] In S56, the control unit 68 sets the conditions for the binding process, such as the number of rotations of the feed motor 72, the upper limit of the torque of the feed motor 72, and the upper limit of the torque of the twist motor 84, based on the type of reel 30 determined in S46, S50, or S54, as control parameters for the rebar binding machine 2. After S56, the type determination process in FIG. 36 ends.

[0136] In S58, the control unit 68 determines that an error has occurred. For example, when the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c all output a magnet non-detection signal, the control unit 68 determines that a no-reel error has occurred. The no-reel error is an error when the reel 30 is not attached. In addition, when two or more of the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c output a magnet detection signal, the control unit 68 determines that a detection abnormality error has occurred. The detection abnormality error is an error when some abnormality occurs in the detector 156. After S58, the type determination process of FIG. 36 ends.

[0137] As shown in FIG. 35, after executing the type determination process (see FIG. 36) in S22, the process proceeds to S24. In S24, the control unit 68 judges whether an error has occurred in the type determination process of S22. If it is determined that an error has occurred (YES), the process proceeds to S26. In S26, the control unit 68 notifies error information. For example, if a no-reel error has occurred in the type determination process of S22, the control unit 68 displays on the display unit 52 first error information indicating that the reel 30 is not attached. Alternatively, if a detection abnormality error has occurred in the type determination process of S22, the control unit 68 displays on the display unit 52 third error information indicating that an abnormality has occurred in the detector 156. After S26, the process shown in FIG. 35 ends.

[0138] If it is determined in S24 that no error has occurred (NO), the process proceeds to S28. In S28, the control unit 68 executes an initialization process similar to S6 in Fig. 16. After S28, the process proceeds to S30.

[0139] In S30, the control unit 68 determines whether the reinforcing bar binding machine 2 has been turned off. If the reinforcing bar binding machine 2 has been turned off (YES), the process shown in Fig. 35 ends. If the reinforcing bar binding machine 2 remains on (NO), the process proceeds to S32.

[0140] In S32, the control unit 68 executes again the type determination process (see FIG. 36) similar to that in S22.

[0141] In S34, the control unit 68 judges whether an error has occurred in the type determination process of S32. If it is judged that an error has occurred (YES), the process proceeds to S36. In S36, the control unit 68 notifies error information. For example, if a no-reel error has occurred in the type determination process of S32, the control unit 68 displays second error information indicating that the reel 30 has been removed on the display unit 52. Alternatively, if a detection abnormality error has occurred in the type determination process of S32, the control unit 68 displays third error information indicating that an abnormality has occurred in the detector 156 on the display unit 52. After S36, the process shown in FIG. 35 ends.

[0142] If it is determined in S34 that no error has occurred (if NO), the process proceeds to S38. In S38, the control unit 68 determines whether the trigger 24 is pulled. If the trigger 24 is not pulled (if NO), the process returns to S30. If the trigger 24 is pulled (if YES), the process proceeds to S40.

[0143] In S40, the control unit 68 executes the same bundling process as S14 in Fig. 16 based on the control parameters (see S56 in Fig. 36) set in the type determination process in S32. After S40, the process returns to S30.

[0144] As shown in FIG. 37, the type determination process of S32 and the process of determining whether an error has occurred in S34 may be executed after it is determined in S38 that the trigger 24 is pulled (after YES is obtained) and before the bundling process is executed in S40.

[0145] (effect) The reinforcing bar binding machine 2 of this embodiment includes a bobbin 28, a reel 30 including a wire W wound around the bobbin 28, a right reel attachment unit 36 ​​(one example of a reel attachment unit) to which the reel 30 is attached, a feed unit 60 for feeding the wire W wound around the bobbin 28, a guide unit 62 for guiding the wire W around the reinforcing bar R, a twisting unit 66 for twisting the wire W around the reinforcing bar R, and a detection unit 150 for detecting the type of the reel 30. The bobbin 28 includes a body 100 around which the wire W is wound, the body 100 having a first internal space 116 into which the right reel attachment unit 36 ​​is inserted, and information units 106, 128, 136 for holding type information indicating the type of the reel 30. The detection unit 150 is disposed in the first internal space 116 when the reel 30 is attached to the right reel attachment unit 36.

[0146] According to the above configuration, the detection unit 150 is disposed in the first internal space 116 of the reel 30 when the reel 30 is attached to the right reel attachment unit 36. Therefore, compared to a configuration in which the detection unit 150 is not disposed in the first internal space 116 of the reel 30 when the reel 30 is attached to the right reel attachment unit 36, it is possible to prevent the rebar binding machine 2 from becoming large.

[0147] Furthermore, the information sections 106, 128, 136 have protrusions 122, 130, 138 protruding from the body 100. The protrusions 122, 130, 138 have protruding lengths 124, 132, 140 that differ depending on the type of reel 30. The protruding lengths 124, 132, 140 are type information.

[0148] According to the above configuration, the protrusion lengths 124, 132, 140 of the protrusions 122, 130, 138 differ depending on the type of reel 30. The easy configuration for changing the protrusion lengths 124, 132, 140 distinguishes the types of reel 30 while preventing an increase in the number of protrusions 122, 130, 138. This makes it possible to prevent the structure of the reel 30 from becoming complicated.

[0149] Additionally, the protrusions 122 , 130 , and 138 are disposed in the first internal space 116 .

[0150] According to the above configuration, compared to a configuration in which the protrusions 122, 130, 138 are not disposed in the first internal space 116, it is possible to prevent the reel 30 from becoming large.

[0151] The body 100 has a cylindrical shape and includes a body main body 110 having an internal space 114, and a partition body 112 that divides the internal space 114 of the body main body 110 into a first internal space 116 and a second internal space 118 different from the first internal space 116. The protrusions 122, 130, 138 protrude from the partition body 112.

[0152] According to the above configuration, by arranging the protrusions 122 , 130 , 138 on the partition body 112 , the protrusions 122 , 130 , 138 can be easily arranged in the first internal space 116 .

[0153] Alternatively, the reel 30 rotates about the central axis AX1 when attached to the right reel mounting unit 36. The protrusions 122, 130, 138 are disposed on and extend along the central axis AX1.

[0154] According to the above configuration, when the reel 30 rotates, the positions of the protrusions 122, 130, and 138 relative to the central axis AX1 can be prevented from changing.

[0155] The detection unit 150 also includes a movable member 152 that is disposed in an initial position when the right reel mounting unit 36 ​​is not inserted into the first internal space 116, and that is pressed by the protrusions 122, 130, 138 to move from the initial position when the right reel mounting unit 36 ​​is inserted into the first internal space 116, and a detector 156 that detects the position of the movable member 152.

[0156] According to the above configuration, when the reel 30 is attached to the right reel mounting unit 36, the position of the movable member 152 relative to the initial position differs depending on the type of reel 30. With a simple configuration in which the detector 156 detects the position of the movable member 152, the type of reel 30 can be detected.

[0157] The right reel attachment unit 36 ​​also includes an insertion tube portion 42 that is inserted into the first internal space 116. The detector 156 is disposed inside the insertion tube portion 42.

[0158] According to the above configuration, it is possible to prevent the detector 156 from coming into contact with the reel 30 and being damaged.

[0159] The insertion tube portion 42 also includes a bottom wall portion 46 (an example of a wall portion) that faces the reel 30 when inserted into the first internal space 116, and a through hole 46a that penetrates the bottom wall portion 46. When the insertion tube portion 42 is inserted into the first internal space 116, the protrusions 122, 130, 138 penetrate the through hole 46a and press the movable member 152 toward the inside of the insertion tube portion 42.

[0160] According to the above configuration, when the reel 30 is attached to the right reel attachment unit 36, the movable member 152 is disposed inside the insertion tube portion 42. This allows the detector 156 to easily detect the position of the movable member 152.

[0161] In addition, the detection unit 150 further includes a biasing member 154 that biases the movable member 152 to the initial position.

[0162] According to the above configuration, when the reel 30 is removed from the right reel mounting unit 36, the movable member 152 can be easily returned to its initial position.

[0163] The bobbin 28 also rotates around the right reel mounting unit 36 ​​.

[0164] In a configuration in which the bobbin 28 rotates together with the right reel attachment unit 36, a configuration for rotating the right reel attachment unit 36 ​​is required. This complicates the configuration of the rebar binding machine 2. With the above configuration, compared to a configuration in which the bobbin 28 rotates together with the right reel attachment unit 36, it is possible to prevent the configuration of the rebar binding machine 2 from becoming complicated.

[0165] In addition, the hardness of the right reel mounting unit 36 ​​is greater than the hardness of the bobbin 28 .

[0166] According to the above configuration, wear on the right reel mounting unit 36 ​​can be suppressed.

[0167] The detection unit 150 also includes an operated portion 162 (an example of a contact portion) that comes into contact with the bobbin 28 when the reel 30 is attached to the right reel attachment unit 36. The hardness of the operated portion 162 is greater than the hardness of the bobbin 28.

[0168] According to the above configuration, wear of the operated portion 162 can be suppressed.

[0169] The rebar binding machine 2 further includes a control unit 68 that controls the feeding unit 60 and the twisting unit 66 to execute a binding process for binding the rebars R using the wire W. The control unit 68 detects the type of the reel 30 by the detection unit 150 during the binding process.

[0170] According to the above configuration, the feeding unit 60 and the twisting unit 66 can be controlled based on the type of the reel 30 detected during the bundling process. This makes it possible to prevent poor bundling of the reinforcing bars R.

[0171] The reinforcing bar binding machine 2 of this embodiment includes a bobbin 28, a reel 30 including a wire W wound around the bobbin 28, a right reel attachment unit 36 ​​(one example of a reel attachment unit) to which the reel 30 is attached, a feed unit 60 that feeds the wire W wound around the bobbin 28, a guide unit 62 that guides the wire W around the reinforcing bar R, a twisting unit 66 that twists the wire W around the reinforcing bar R, and a detection unit 150 that detects the type of the reel 30. The bobbin 28 includes protrusions 122, 130, 138 having protrusion lengths 124, 132, 140 that differ depending on the type of the reel 30. The detection unit 150 detects the type of the reel 30 based on the protrusion lengths 124, 132, 140 of the protrusions 122, 130, 138.

[0172] According to the above configuration, the protrusion lengths 124, 132, 140 of the protrusions 122, 130, 138 differ depending on the type of reel 30. The easy configuration for changing the protrusion lengths 124, 132, 140 distinguishes the types of reel 30 while preventing an increase in the number of protrusions 122, 130, 138. This makes it possible to prevent the structure of the reel 30 from becoming complicated.

[0173] The rebar tying machine 2 of this embodiment is equipped with a right reel mounting unit 36 ​​(reel mounting unit) to which a first reel 30A having a first protrusion 122 with a first protrusion length 124 and a wire W, and a second reel 30B having a second protrusion 130 with a second protrusion length 132 and a wire W can be selectively attached, a feeding unit 60 that feeds the wire W, a guide unit 62 that guides the wire W around the rebar R, a twisting unit 66 that twists the wire W around the rebar R, and a detection unit 150 that can detect the first protrusion 122 or the second protrusion 130.

[0174] According to the above configuration, the protrusion lengths 124, 132 of the protrusions 122, 130 differ depending on the type of reel 30. The easy configuration for changing the protrusion lengths 124, 132 distinguishes the types of reel 30 while preventing an increase in the number of protrusions 122, 130. This makes it possible to prevent the structure of the reel 30 from becoming complicated.

[0175] The reel 30 of this embodiment is used in a reinforcing bar binding machine 2. The reel 30 includes a bobbin 28 and a wire W wound around the bobbin 28. The reinforcing bar binding machine 2 includes a right reel attachment unit 36 ​​(an example of a reel attachment unit) to which the reel 30 is attached, a feed unit 60 that feeds the wire W wound around the bobbin 28, a guide unit 62 that guides the wire W around the reinforcing bar R, a twisting unit 66 that twists the wire W around the reinforcing bar R, and a detection unit 150 that detects the type of the reel 30. The bobbin 28 includes information units 106, 128, 136 that hold type information indicating the type of the reel 30, and a body 100 around which the wire W is wound, the body 100 having a first internal space 116 into which the right reel attachment unit 36 ​​is inserted and in which the detection unit 150 is disposed when the right reel attachment unit 36 ​​is inserted.

[0176] According to the above configuration, the detection unit 150 is disposed in the first internal space 116 of the reel 30 when the reel 30 is attached to the right reel attachment unit 36. Therefore, compared to a configuration in which the detection unit 150 is not disposed in the first internal space 116 of the reel 30 when the reel 30 is attached to the right reel attachment unit 36, it is possible to prevent the rebar binding machine 2 from becoming large.

[0177] Additionally, the information sections 106 , 128 , 136 are disposed in the first internal space 116 .

[0178] According to the above configuration, it is possible to prevent the reel 30 from becoming large.

[0179] The reel 30 of this embodiment is used in a reinforcing bar binding machine 2. The reel 30 includes a bobbin 28 and a wire W wound around the bobbin 28. The reinforcing bar binding machine 2 includes a right reel attachment unit 36 ​​(one example of a reel attachment unit) to which the reel 30 is attached, a feed unit 60 that feeds the wire W wound around the bobbin 28, a guide unit 62 that guides the wire W around the reinforcing bar R, a twisting unit 66 that twists the wire W around the reinforcing bar R, and a detection unit 150 that detects the type of the reel 30. The bobbin 28 has protrusion lengths 124, 132, 140 that differ depending on the type of the reel 30, and includes protrusions 122, 130, 138 that allow the detection unit 150 to detect the type of the reel 30 based on the protrusion lengths 124, 132, 140.

[0180] According to the above configuration, the protrusion lengths 124, 132, 140 of the protrusions 122, 130, 138 differ depending on the type of reel 30. The easy configuration for changing the protrusion lengths 124, 132, 140 distinguishes the types of reel 30 while preventing an increase in the number of protrusions 122, 130, 138. This makes it possible to prevent the structure of the reel 30 from becoming complicated.

[0181] The reel 30 of this embodiment is used in the rebar binding machine 2. The reel 30 includes a bobbin 28 and a wire W wound around the bobbin 28. The bobbin 28 includes protrusions 122, 130, 138 having different protrusion lengths 124, 132, 140 depending on the type of reel 30.

[0182] According to the above configuration, the protrusion lengths 124, 132, 140 of the protrusions 122, 130, 138 differ depending on the type of reel 30. The easy configuration for changing the protrusion lengths 124, 132, 140 distinguishes the types of reel 30 while preventing an increase in the number of protrusions 122, 130, 138. This makes it possible to prevent the structure of the reel 30 from becoming complicated.

[0183] The reinforcing bar binding machine 2 of this embodiment includes a reel 30 having a bobbin 28 and a wire W wound around the bobbin 28, a right reel attachment unit 36 ​​(an example of a reel attachment unit) to which the reel 30 is attached, a feed unit 60 that feeds the wire W wound around the bobbin 28, a guide unit 62 that guides the wire W around the reinforcing bar R, a twisting unit 66 that twists the wire W around the reinforcing bar R, a detection unit 150 that detects the type of the reel 30, a main power switch 50 that switches the reinforcing bar binding machine 2 between an on state and an off state, a display unit 52 (an example of a notification unit) that notifies error information, and a control unit 68 that controls the feed unit 60, the twisting unit 66, and the display unit 52 and receives a signal related to the type of the reel 30 from the detection unit 150. The control unit 68 controls the display unit 52 when the signal received from the detection unit 150 changes while the reinforcing bar binding machine 2 is in an on state.

[0184] According to the above configuration, when the signal received from the detection unit 150 changes while the reinforcing bar binding machine 2 is in the on state, for example, when the reel 30 is removed from the right reel attachment unit 36 ​​while the reinforcing bar binding machine 2 is in the on state, the display unit 52 notifies the user of error information. This allows the user to recognize the error information. This makes it possible to prevent the user from reattaching the reel 30 to the right reel attachment unit 36 ​​without positioning the tip of the wire W in the correct position and performing binding of the reinforcing bar R using the reinforcing bar binding machine 2.

[0185] The rebar tying machine 2 of this embodiment is equipped with a right reel mounting unit 36 ​​(an example of a reel mounting unit) to which a reel 30 having a bobbin 28 and a wire W wound around the bobbin 28 is attached, a detection unit 150 that detects the type of reel 30, a main power switch 50 that switches the rebar tying machine 2 between the on and off states, a control unit 68 (an example of a signal receiving unit) that receives a signal regarding the type of reel 30 from the detection unit 150, and a display unit 52 (an example of an alarm unit) that notifies error information when the signal received by the control unit 68 changes while the rebar tying machine 2 is in the on state.

[0186] According to the above configuration, the user can be prevented from binding the reinforcing bars R using the reinforcing bar binding machine 2 by being aware of the error information.

[0187] The reinforcing bar binding machine 2 of this embodiment includes a bobbin 28, a reel 30 including a wire W wound around the bobbin 28, a right reel attachment unit 36 ​​(an example of a reel attachment unit) to which the reel 30 is attached, a feed unit 60 that feeds the wire W wound around the bobbin 28, a guide unit 62 that guides the wire W around the reinforcing bar R, a twisting unit 66 that twists the wire W around the reinforcing bar R, a detection unit 150 that detects the type of the reel 30, and a control unit 68 that controls the feed unit 60 and the twisting unit 66 to execute a binding process of binding the reinforcing bar R with the wire W. The control unit 68 detects the type of the reel 30 by the detection unit 150 when the reinforcing bar binding machine 2 is switched from an off state to an on state.

[0188] According to the above configuration, the type of the reel 30 can be detected after the reinforcing bar binding machine 2 is switched from the OFF state to the ON state and before the binding process is performed.

[0189] The reinforcing bar binding machine 2 of this embodiment includes a bobbin 28, a reel 30 including a wire W wound around the bobbin 28, a right reel attachment unit 36 ​​(an example of a reel attachment unit) to which the reel 30 is attached, a feed unit 60 for feeding the wire W wound around the bobbin 28, a guide unit 62 for guiding the wire W around the reinforcing bar R, a twisting unit 66 for twisting the wire W around the reinforcing bar R, a detection unit 150 for detecting the type of the reel 30, a trigger 24 (an example of an operating member), and a control unit 68 for controlling the feed unit 60 and the twisting unit 66 when the trigger 24 is operated to perform a binding process of binding the reinforcing bar R with the wire W. The control unit 68 detects the type of the reel 30 by the detection unit 150 when the reinforcing bar binding machine 2 is in an on state and after the trigger 24 is operated and before the binding process is performed.

[0190] According to the above configuration, the type of reel 30 can be detected at the timing after the trigger 24 is operated and before the binding process is performed.

[0191] The reinforcing bar binding machine 2 of this embodiment includes a bobbin 28, a reel 30 including a wire W wound around the bobbin 28, a right reel attachment unit 36 ​​(an example of a reel attachment unit) to which the reel 30 is attached, a feed unit 60 for feeding the wire W wound around the bobbin 28, a guide unit 62 for guiding the wire W around the reinforcing bar R, a twisting unit 66 for twisting the wire W around the reinforcing bar R, a detection unit 150 for detecting the type of the reel 30, a trigger 24 (an example of an operating member), and a control unit 68 for controlling the feed unit 60 and the twisting unit 66 when the trigger 24 is operated to perform a binding process of binding the reinforcing bar R with the wire W. The control unit 68 detects the type of the reel 30 by the detection unit 150 when the reinforcing bar binding machine 2 is in an on state and after performing the binding process and before the trigger 24 is next operated.

[0192] According to the above configuration, after the bundling process has been performed, the type of reel 30 can be detected at the timing before the next operation of trigger 24 and the bundling process are performed again.

[0193] (Second Example) In the second embodiment, differences from the first embodiment will be described. As shown in FIG. 17, the first information section 106 of the first reel 30A has a first rib 222 instead of the first protrusion 122. The first rib 222 protrudes to the right from the partition 112. The first rib 222 has a substantially circular ring shape. As shown in FIG. 18, the center of the ring of the first rib 222 is disposed on the central axis AX1. In the left-right direction, the tip of the first rib 222 is disposed closer to the partition 112 than the receiving portion 115b. This prevents the first rib 222 from abutting against the protruding portion 115a when multiple first reels 30A are stacked. The first rib 222 has a first protruding length 224 along the central axis AX1.

[0194] 19, the second information section 128 of the second reel 30B includes a first rib 222 and a second rib 230 instead of the second protrusion 130. The configuration of the first rib 222 of the second reel 30B is the same as the configuration of the first rib 222 of the first reel 30A.

[0195] The second rib 230 protrudes from the partition 112 to the right. The second rib 230 has a substantially annular shape. The center of the ring of the second rib 230 is disposed on the central axis AX1. The second rib 230 is farther from the central axis AX1 than the first rib 222. The second rib 230 surrounds the first rib 222. In the left-right direction, the tip of the second rib 230 is disposed closer to the partition 112 than the receiving portion 115b. This prevents the second rib 230 from contacting the protruding portion 115a when multiple second reels 30B are stacked. The second rib 230 has a second protruding length 232 along the central axis AX1. The second protruding length 232 is longer than the first protruding length 224.

[0196] As shown in FIG. 20, the third information section 136 of the third reel 30C has a second rib 230 instead of the third protrusion 138. The configuration of the second rib 230 of the third reel 30C is the same as the configuration of the second rib 230 of the second reel 30B. The combination of the first rib 222 and the second rib 230 is type information indicating the type of the reel 30. The reel 30 has the first rib 222 and does not have the second rib 230, which is type information indicating the type of the first reel 30A. The reel 30 has the first rib 222 and the second rib 230, which is type information indicating the type of the second reel 30B. The reel 30 does not have the first rib 222 and has the second rib 230, which is type information indicating the type of the third reel 30C.

[0197] As shown in Fig. 21, the insertion tube portion 42 includes a large diameter tube portion 244, a connecting tube portion 246, a small diameter tube portion 248, and a bottom wall portion 250. The large diameter tube portion 244 has a cylindrical shape extending in the left-right direction. One end of the large diameter tube portion 244 is connected to the base portion 34 (see Fig. 5). The large diameter tube portion 244 has a through hole 244a. The through hole 244a penetrates a side wall of the large diameter tube portion 244.

[0198] The connecting tube portion 246 has a truncated cone shape extending in the left-right direction. One end of the connecting tube portion 246 is connected to the other end of the large diameter tube portion 244.

[0199] The small diameter cylindrical portion 248 has a cylindrical shape extending in the left-right direction. The diameter of the outer circumferential surface of the small diameter cylindrical portion 248 is smaller than the diameter of the outer circumferential surface of the large diameter cylindrical portion 244. The small diameter cylindrical portion 248 is connected to the other end of the connecting cylindrical portion 246. The small diameter cylindrical portion 248 has a through hole 248a. The through hole 248a penetrates the side wall of the small diameter cylindrical portion 248.

[0200] The bottom wall portion 250 is connected to the other end of the small diameter cylindrical portion 248. The bottom wall portion 250 closes the opening at the other end of the small diameter cylindrical portion 248.

[0201] The detection unit 150 is disposed in the first internal space 116 (see FIG. 22) when the insertion tube portion 42 is inserted into the reel 30 (see FIG. 22). The detection unit 150 includes a first movable member 270, a first biasing member 272, a second movable member 274, a second biasing member 276, and a detector 278.

[0202] The first movable member 270 includes a first base portion 282 and a first operated portion 284. The first base portion 282 is disposed inside the small diameter cylinder portion 248. The first base portion 282 is supported by the small diameter cylinder portion 248 so as to be movable in the front-rear direction. One end of the first base portion 282 abuts against the first biasing member 272. The first base portion 282 is biased in the rear direction by the first biasing member 272. The first movable member 270 is located in the initial position when no force is applied in the front direction. A first step portion 285 is formed between the other end of the first base portion 282 and the first operated portion 284, and the first step portion 285 abuts against the small diameter cylinder portion 248 in the front-rear direction when the first movable member 270 is located in the initial position.

[0203] One end of the first operated portion 284 is connected to the other end of the first base portion 282. The first operated portion 284 passes through the through hole 248a when the first movable member 270 is located at the initial position. The first operated portion 284 has a first inclined surface 286. When the first movable member 270 is located at the initial position, the first inclined surface 286 is disposed outside the small diameter cylinder portion 248. The first inclined surface 286 is inclined so as to move away from the central axis AX1 from the left end to the right end.

[0204] The second movable member 274 includes a second base portion 290 and a second operated portion 292. The second base portion 290 is disposed inside the large diameter cylinder portion 244. The second base portion 290 is supported by the large diameter cylinder portion 244 so as to be movable in the front-rear direction. One end of the second base portion 290 abuts against the second biasing member 276. The second base portion 290 is biased in the rear direction by the second biasing member 276. The second movable member 274 is located in the initial position when no force is applied in the front direction. A second step portion 293 is formed between the other end of the second base portion 290 and the second operated portion 292, and the second step portion 293 abuts against the large diameter cylinder portion 244 in the front-rear direction when the second movable member 274 is located in the initial position.

[0205] One end of the second operated portion 292 is connected to the other end of the second base portion 290. The second operated portion 292 passes through the through hole 244a when the second movable member 274 is located at the initial position. The second operated portion 292 has a second inclined surface 294. When the second movable member 274 is located at the initial position, the second inclined surface 294 is disposed outside the large diameter cylinder portion 244. The second inclined surface 294 is inclined so as to move away from the central axis AX1 from the left end to the right end.

[0206] The detector 278 is disposed inside the insertion tube portion 42. The detector 278 includes a plurality of magnets 298 (two in this embodiment), a substrate 300, and a plurality of magnetic sensors 302 (two in this embodiment).

[0207] The magnet 298 is, for example, a permanent magnet. The two magnets 298 include a first magnet 298a and a second magnet 298b. The first magnet 298a is fixed to the first base 282. The first magnet 298a moves integrally with the first movable member 270. The second magnet 298b is fixed to the second base 290. The second magnet 298b moves integrally with the second movable member 274.

[0208] The substrate 300 is disposed inside the connecting tube portion 246. The substrate 300 is disposed along a plane that does not include the up-down direction and the front-rear direction. The substrate 300 has a first opposing surface 300a and a second opposing surface 300b on the opposite side of the first opposing surface 300a. The first opposing surface 300a faces the first movable member 270 in the left-right direction. The second opposing surface 300b faces the second movable member 274 in the left-right direction.

[0209] The two magnetic sensors 302 include a first magnetic sensor 302a and a second magnetic sensor 302b. The first magnetic sensor 302a is fixed to the first opposing surface 300a. When the first movable member 270 is located at the initial position, the first magnetic sensor 302a is disposed forward of the first magnet 298a. At this time, the first magnetic sensor 302a does not face the first magnet 298a in the left-right direction.

[0210] The second magnetic sensor 302b is fixed to the second opposing surface 300b. When the second movable member 274 is located at the initial position, the second magnetic sensor 302b faces the second magnet 298b in the left-right direction. In a modified example, when the second movable member 274 is located at the initial position, the second magnetic sensor 302b does not have to face the second magnet 298b in the left-right direction.

[0211] As shown in FIG. 22, when the first reel 30A is attached to the right reel attachment unit 36, the insertion tube portion 42 is inserted into the first internal space 116 of the first reel 30A. As a result, the first rib 222 slides on the first inclined surface 286 of the first operated portion 284, and presses the first operated portion 284 forward toward the inside of the small diameter tube portion 248. The first movable member 270 moves forward and stops at a position where the first magnet 298a faces the first magnetic sensor 302a in the left-right direction. Therefore, the first magnetic sensor 302a detects the first magnet 298a. A magnet detection signal indicating that the first magnetic sensor 302a detects the first magnet 298a is sent to the control unit 68 (see FIG. 2). In addition, the second movable member 274 is not pressed by the first reel 30A. Therefore, the second magnetic sensor 302b faces the second magnet 298b in the left-right direction. The second magnetic sensor 302b detects the second magnet 298b, and a magnet detection signal is sent to the control unit 68. The control unit 68 detects that the first reel 30A is attached to the right reel mounting unit 36 ​​based on the magnet detection signal from the first magnetic sensor 302a and the magnet detection signal from the second magnetic sensor 302b.

[0212] As shown in FIG. 23, when the second reel 30B is attached to the right reel attachment unit 36, the insertion tube portion 42 is inserted into the first internal space 116 of the second reel 30B. As a result, the first rib 222 slides on the first inclined surface 286 of the first operated portion 284, and presses the first operated portion 284 forward toward the inside of the small diameter tube portion 248. The first movable member 270 moves forward and stops at a position where the first magnet 298a faces the first magnetic sensor 302a in the left-right direction. Therefore, the first magnetic sensor 302a detects the first magnet 298a. A magnet detection signal indicating that the first magnetic sensor 302a detects the first magnet 298a is sent to the control unit 68 (see FIG. 2). Also, the second rib 230 slides on the second inclined surface 294 of the second operated portion 292, and presses the second operated portion 292 forward toward the inside of the large diameter cylinder portion 244. The second movable member 274 moves forward and stops at a position where the second magnet 298b is forward of the second magnetic sensor 302b. Therefore, the second magnetic sensor 302b does not detect the second magnet 298b. A magnet non-detection signal indicating that the second magnetic sensor 302b does not detect the second magnet 298b is sent to the control unit 68. The control unit 68 detects that the second reel 30B is attached to the right reel mounting unit 36 ​​based on the magnet detection signal by the first magnetic sensor 302a and the magnet non-detection signal by the second magnetic sensor 302b.

[0213] As shown in FIG. 24, when the third reel 30C is attached to the right reel attachment unit 36, the insertion tube portion 42 is inserted into the first internal space 116 of the third reel 30C. As a result, the second rib 230 slides on the second inclined surface 294 of the second operated portion 292, and presses the second operated portion 292 forward toward the inside of the large diameter tube portion 244. The second movable member 274 moves forward and stops at a position where the second magnet 298b is forward of the second magnetic sensor 302b. Therefore, the second magnetic sensor 302b does not detect the second magnet 298b. A magnet non-detection signal indicating that the second magnetic sensor 302b does not detect the second magnet 298b is sent to the control unit 68 (see FIG. 2). In addition, the first movable member 270 is not pressed by the third reel 30C. Therefore, the first magnetic sensor 302a does not face the first magnet 298a in the left-right direction. When the first magnetic sensor 302a does not detect the first magnet 298a, a magnet non-detection signal is sent to the control unit 68. The control unit 68 detects that the third reel 30C is attached to the right reel mounting unit 36 ​​based on the magnet non-detection signal from the first magnetic sensor 302a and the magnet non-detection signal from the second magnetic sensor 302b.

[0214] (Third Example) The third embodiment will be described below with respect to differences from the first embodiment. As shown in FIG. 25, in this embodiment, the bobbin 28 of the reel 30 includes a bobbin member 402 and an information member 404 which is a separate part from the bobbin member 402. Among these, the bobbin member 402 having a common shape is used for the first bobbin 28A, the second bobbin 28B, and the third bobbin 28C. The information member 404 having a different shape is used for the first bobbin 28A, the second bobbin 28B, and the third bobbin 28C. That is, the first information member 404A is used for the first bobbin 28A, the second information member 404B is used for the second bobbin 28B, and the third information member 404C is used for the third bobbin 28C. The bobbin member 402 and the information member 404 may be made of the same material or different materials. For example, the bobbin member 402 may be made of a resin material and the information member 404 may be made of a resin material having a higher hardness, or the bobbin member 402 may be made of a resin material and the information member 404 may be made of a metal material.

[0215] As shown in FIG. 26, the bobbin member 402 includes a body 100, a left flange 102, and a right flange 104. The body 100 includes a body main body 110 and a partition body 112. The partition body 112 includes a partition plate 406 having a generally flat plate shape. A through hole 406a is formed in the center of the partition plate 406. As shown in FIG. 27, an engagement protrusion 406b that protrudes leftward is formed on the periphery of the through hole 406a on the left side surface of the partition plate 406. As shown in FIG. 28, an engagement recess 406c that recesses leftward is formed on the periphery of the through hole 406a on the right side surface of the partition plate 406.

[0216] 29, the information member 404 includes a flange portion 408, a protrusion 410, a pair of guide portions 412, and a pair of engaging claw portions 414. The flange portion 408 is formed in a substantially circular plate shape having a pair of notches 408a. The protrusion 410 protrudes to the right from the flange portion 408. The pair of guide portions 412 and the pair of engaging claw portions 414 protrude to the left from the flange portion 408. The pair of engaging claw portions 414 are disposed at positions corresponding to the pair of notches 408a.

[0217] As shown in FIG. 28, when attaching the information member 404 to the bobbin member 402, the pair of guide portions 412 and the pair of engaging claw portions 414 are inserted into the through-hole 406a from the right side of the partition plate 406. As a result, as shown in FIG. 26, the flange portion 408 comes into contact with the engaging recess 406c, and the tips of the pair of engaging claw portions 414 engage with the engaging protrusion 406b, so that the information member 404 is attached to the bobbin member 402. When removing the information member 404 from the bobbin member 402, the tips of the pair of engaging claw portions 414 are disengaged from the engaging protrusion 406b, and the pair of guide portions 412 and the pair of engaging claw portions 414 are pulled out of the through-hole 406a toward the right side of the partition plate 406. As a result, the information member 404 is removed from the bobbin member 402.

[0218] In first information member 404A, second information member 404B, and third information member 404C, flange portion 408, pair of guide portions 412, and pair of engaging claw portions 414 have a common shape, and protrusions 410 have shapes different from one another. That is, protrusion 410 of first information member 404A corresponds to first protrusion 122 having first protrusion length 124 along central axis AX1, and corresponds to first information portion 106. Protrusion 410 of second information member 404B corresponds to second protrusion 130 having second protrusion length 132 along central axis AX1, and corresponds to second information portion 128. Protrusion 410 of third information member 404C corresponds to third protrusion 138 having third protrusion length 140 along central axis AX1, and corresponds to third information portion 136.

[0219] (effect) In the rebar binding machine 2 of this embodiment, the bobbin 28 further includes information members 404 (first information member 404A, second information member 404B, third information member 404C) (an example of a first member) and a bobbin member 402 (an example of a second member) different from the information member 404. Information sections 106, 128, 136 are provided on the information member 404. The body portion 100 is provided on the bobbin member 402.

[0220] According to the above configuration, it is only necessary to prepare different types of information members 404 (first information member 404A, second information member 404B, third information member 404C) for different types of reels 30 (first reel 30A, second reel 30B, third reel 30C), and the bobbin member 402 can be standardized.

[0221] In the rebar binding machine 2 of this embodiment, the reels 30 (first reel 30A, second reel 30B, third reel 30C) rotate around the central axis AX1 when attached to the right reel attachment unit 36 ​​(an example of a reel attachment unit). The information units 106, 128, 136 are disposed on the central axis AX1 in the first internal space 116 and include protrusions 410 (first protrusion 122, second protrusion 130, third protrusion 138) (examples of protrusions) extending along the central axis AX1. The protrusions 410 (first protrusion 122, second protrusion 130, third protrusion 138) have different protrusion lengths (first protrusion length 124, second protrusion length 132, third protrusion length 140) depending on the type of the reel 30 (first reel 30A, second reel 30B, third reel 30C). The protrusion lengths (first protrusion length 124, second protrusion length 132, third protrusion length 140) are type information.

[0222] According to the above configuration, it is possible to distinguish the type of reel 30 by simply changing the protruding length of the protrusion 410. In addition, it is possible to prevent the position of the protrusion 410 from changing relative to the central axis AX1 when the reel 30 rotates.

[0223] In the reinforcing bar binding machine 2 of this embodiment, the information member 404 is fixed to the bobbin member 402 in a non-dislodging manner by the tips of the pair of engaging claws 414 engaging with the engaging protrusions 406b.

[0224] According to the above configuration, it is possible to prevent the information member 404 from accidentally falling off the bobbin member 402.

[0225] In the reinforcing bar binding machine 2 of this embodiment, a through hole 406a is formed in the bobbin member 402. The information member 404 passes through the through hole 406a.

[0226] If the through hole 406a is not formed in the bobbin member 402, it is difficult to fix the information member 404 to the bobbin member 402 in a manner that prevents it from slipping out. According to the above configuration, by utilizing the through hole 406a formed in the bobbin member 402, the information member 404 can be fixed to the bobbin member 402 in a manner that prevents it from slipping out with a simple configuration.

[0227] In the rebar binding machine 2 of this embodiment, the information member 404 can be inserted into and removed from the through hole 406a from the side opposite to the first internal space 116.

[0228] According to the above-mentioned configuration, the operation of attaching the information member 404 to the bobbin member 402 and the operation of removing the information member 404 from the bobbin member 402 can be performed more easily.

[0229] (Fourth Example) The following describes the fourth embodiment and its differences from the first embodiment. As shown in FIG. 30, in this embodiment, the bobbin 28 of the reel 30 includes a bobbin member 502 and an information member 504 that is a separate part from the bobbin member 502. Among these, the bobbin member 502 has a common shape for the first bobbin 28A, the second bobbin 28B, and the third bobbin 28C. The information member 504 has a different shape for the first bobbin 28A, the second bobbin 28B, and the third bobbin 28C. That is, the first information member 504A is used for the first bobbin 28A, the second information member 504B is used for the second bobbin 28B, and the third information member 504C is used for the third bobbin 28C. The bobbin member 502 and the information member 504 may be made of the same material or different materials. For example, the bobbin member 502 may be made of a resin material and the information member 504 may be made of a resin material having a higher hardness, or the bobbin member 502 may be made of a resin material and the information member 504 may be made of a metal material.

[0230] As shown in FIG. 31, the bobbin member 502 includes a body 100, a left flange 102, and a right flange 104. The body 100 includes a body main body 110 and a partition 112. The partition 112 includes a partition 506 having a substantially flat plate shape. A through hole 506a is formed in the center of the partition 506. As shown in FIG. 32, the left surface of the partition 506 is formed with a support protrusion 506b that protrudes leftward from the periphery of the through hole 506a, a rotation stopper 506c provided on the inner side of the support protrusion 506b, and an engagement portion 506d provided on the inner side of the support protrusion 506b and to the left of the rotation stopper 506c.

[0231] The information member 504 includes a flange portion 508, a protrusion 510, and a knob portion 512. The flange portion 508 is formed in a generally circular plate shape having a pair of notches 508a. The protrusion 510 protrudes in the right direction from the flange portion 508. The knob portion 512 protrudes in the left direction from the flange portion 508. The knob portion 512 has a generally flat plate shape that is aligned along the longitudinal direction of the flange portion 508.

[0232] As shown in FIG. 32, when attaching the information member 504 to the bobbin member 502, the protrusion 510 is inserted into the through hole 506a from the left side of the partition plate 506, and the flange portion 508 is brought into contact with the partition plate 506 as shown in FIG. 33. From this state, the knob portion 512 is pinched and the information member 504 is rotated in a direction in which the flange portion 508 comes into contact with the anti-rotation portion 506c (for example, in a counterclockwise direction). As a result, as shown in FIG. 34, the flange portion 508 engages with the engagement portion 506d, and the information member 504 is attached to the bobbin member 502. When removing the information member 504 from the bobbin member 502, the knob portion 512 is pinched and the information member 504 is rotated in a direction in which the flange portion 508 moves away from the anti-rotation portion 506c (for example, in a clockwise direction). 33, the flange portion 508 is disengaged from the engaging portion 506d. In this state, the information member 504 is removed from the bobbin member 502 by pulling the protruding portion 510 out of the through-hole 506a.

[0233] In first information member 504A, second information member 504B, and third information member 504C, flange portion 508 and tab portion 512 have a common shape, and protrusions 510 have shapes different from one another. That is, protrusion 510 of first information member 504A corresponds to first protrusion 122 having first protrusion length 124 along central axis AX1, and corresponds to first information section 106. Protrusion 510 of second information member 504B corresponds to second protrusion 130 having second protrusion length 132 along central axis AX1, and corresponds to second information section 128. Protrusion 510 of third information member 504C corresponds to third protrusion 138 having third protrusion length 140 along central axis AX1, and corresponds to third information section 136.

[0234] 30 may be provided with an abutting member (not shown) that abuts against the knob portion 512 in order to prevent the information member 504 from falling off the bobbin member 502.

[0235] (effect) In the rebar binding machine 2 of this embodiment, the bobbin 28 further includes information members 504 (first information member 504A, second information member 504B, third information member 504C) (an example of a first member) and a bobbin member 502 (an example of a second member) different from the information member 504. Information sections 106, 128, 136 are provided on the information member 504. The body portion 100 is provided on the bobbin member 502.

[0236] According to the above configuration, it is only necessary to prepare different types of information members 504 (first information member 504A, second information member 504B, third information member 504C) for different types of reels 30 (first reel 30A, second reel 30B, third reel 30C), and the bobbin member 502 can be standardized.

[0237] In the rebar binding machine 2 of this embodiment, the reels 30 (first reel 30A, second reel 30B, third reel 30C) rotate around the central axis AX1 when attached to the right reel attachment unit 36 ​​(an example of a reel attachment unit). The information units 106, 128, 136 are disposed on the central axis AX1 in the first internal space 116 and include protrusions 510 (first protrusion 122, second protrusion 130, third protrusion 138) (examples of protrusions) extending along the central axis AX1. The protrusions 510 (first protrusion 122, second protrusion 130, third protrusion 138) have different protrusion lengths (first protrusion length 124, second protrusion length 132, third protrusion length 140) depending on the type of the reel 30 (first reel 30A, second reel 30B, third reel 30C). The protrusion lengths (first protrusion length 124, second protrusion length 132, third protrusion length 140) are type information.

[0238] According to the above configuration, it is possible to distinguish the type of reel 30 by simply changing the protruding length of the protrusion 510. In addition, it is possible to prevent the position of the protrusion 510 from changing relative to the central axis AX1 when the reel 30 rotates.

[0239] In the reinforcing bar binding machine 2 of this embodiment, the information member 504 is fixed to the bobbin member 502 in a manner that the flange portion 508 engages with the engaging portion 506d, thereby preventing it from coming loose.

[0240] According to the above configuration, it is possible to prevent the information member 504 from accidentally falling off the bobbin member 502.

[0241] In the reinforcing bar binding machine 2 of this embodiment, a through hole 506a is formed in the bobbin member 502. The information member 504 passes through the through hole 506a.

[0242] If the through hole 506a is not formed in the bobbin member 502, it would be difficult to fix the information member 504 to the bobbin member 502 in a manner that prevents it from slipping out. According to the above configuration, by utilizing the through hole 506a formed in the bobbin member 502, the information member 504 can be fixed to the bobbin member 502 in a manner that prevents it from slipping out with a simple configuration.

[0243] In the rebar binding machine 2 of this embodiment, the information member 504 can be inserted into the through hole 506a from the side opposite to the first internal space 116 and can be removed from the through hole 506a.

[0244] According to the above-mentioned configuration, the operation of attaching the information member 504 to the bobbin member 502 and the operation of removing the information member 504 from the bobbin member 502 can be performed more easily.

[0245] (Modification) In one embodiment, the information sections 106, 128, 136 shown in FIGS. 7, 9, 10, etc. may protrude from the inner circumferential surface 110b of the barrel main body 110.

[0246] In one embodiment, the protrusions 122, 130, 138 shown in Figures 7, 9, 10, etc. may be disposed at positions offset from the central axis AX1.

[0247] In one embodiment, the detector 156 shown in FIG. 11 and the like may include a sensor other than the magnetic sensors 170 and 302, for example, a sensor that detects the distance to the protrusions 122, 130, and 138.

[0248] 4 may be rotatable relative to the base 34. In this case, the reel 30 may rotate together with the right reel mounting unit 36 ​​without sliding on the right reel mounting unit 36.

[0249] In one embodiment, the rebar binding machine 2 may be provided with a light that notifies error information as light, instead of the display unit 52, or may be provided with a speaker that notifies error information as sound.

[0250] In one embodiment, the control unit 68 may detect the type of the reel 30 during the initialization process, or may detect the type of the reel 30 at a timing other than the binding process and the initialization process.

[0251] In one embodiment, the rebar binding machine 2 may be provided with a power cord connectable to an external power source instead of the battery pack BP shown in Fig. 1. In this case, the rebar binding machine 2 operates using power supplied from the external power source via the power cord.

[0252] In one embodiment, the reel housing 22 may be located at the rear end of the twisting unit housing 14 .

[0253] In one embodiment, the rebar tying machine 2 may be a rebar tying machine other than a handheld type, for example, an autonomous mobile rebar tying machine.

[0254] In one embodiment, the information member 404 shown in Fig. 26 or the information member 504 shown in Fig. 31 may be removably attached to the bobbin members 402, 502 using a fastener such as a screw. Alternatively, the information member 404, 504 may be permanently attached to the bobbin members 402, 502 by welding or the like. Alternatively, the information member 404, 504 may be removably attached to the left reel attachment unit 38 instead of the bobbin members 402, 502. In this case, the user attaches the information member 404, 504 corresponding to the type of reel 30 to the left reel attachment unit 38 each time.

[0255] In one embodiment, the main power switch 50 may be a tactile switch. In this case, when the main power switch 50 is pressed while the control power supply (not shown) of the control unit 68 is off, a path for supplying power from the battery pack BP to the control unit 68 is formed, the control power supply is turned on, the MCU (not shown) is started, and the rebar binding machine 2 is turned on. After starting up, the MCU switches a semiconductor switch (not shown) that maintains the path for supplying power from the battery pack BP to the control unit 68 from off to on, so that the rebar binding machine 2 remains on even after the hand is released from the main power switch 50. In this state, when the main power switch 50 is pressed again, the MCU switches the semiconductor switch from on to off, cutting off the power supply from the battery pack BP to the control unit 68, turning off the control power supply, and turning off the rebar binding machine 2.

[0256] In one embodiment, the rebar binding machine 2 may not include the main power switch 50. In this case, the rebar binding machine 2 may change from an off state to an on state when the battery pack BP is attached to the battery attachment section 18 or when power is supplied from an external power source via a power cord, and the rebar binding machine 2 may change from an on state to an off state when the battery pack BP is removed from the battery attachment section 18 or when power supply from the external power source via the power cord is cut off.

[0257] In one embodiment, the initialization process of S6 in Fig. 16 may be performed after it is determined that the trigger 24 is pulled in initially in S12 (after YES in S2), rather than after a magnet detection signal is received in S2 (after YES in S2). Similarly, the initialization process of S28 in Fig. 35 or 37 may be performed after it is determined that the trigger 24 is pulled in initially in S38 (after YES in S38), rather than after it is determined that no error has occurred in S24 (after NO in S24).

[0258] In one embodiment, the process of determining the type of reel 30 performed by the control unit 68 (for example, the type determination process of Figure 36) may determine one type of reel 30, may determine two types of reel 30, or may determine four or more types of reel 30.

[0259] In one embodiment, the type of reel 30 may be distinguished according to the manufacturing year of the wire W (or the manufacturing year of the bobbin 28), regardless of whether the specifications of the wire W and the specifications of the bobbin 28 are the same or different. In this case, for example, the control unit 68 may determine that a reel 30 having a wire W (or bobbin 28) manufactured in a new year can be used normally in the rebar binding machine 2, and may determine that a reel 30 having a wire W (or bobbin 28) manufactured in an old year cannot be used in the rebar binding machine 2. Alternatively, the type of reel 30 may be distinguished according to the manufacturing region and / or sales region of the reel 30. In this case, for example, the control unit 68 may determine that a reel 30 can be used normally in the rebar binding machine 2 when the sales region of the reel 30 matches the sales region of the rebar binding machine 2, and may determine that a reel 30 cannot be used in the rebar binding machine 2 when the sales region of the reel 30 does not match the sales region of the rebar binding machine 2.

[0260] In one embodiment, the process of determining the type of the reel 30 performed by the control unit 68 (for example, the type determination process of FIG. 36) may be performed at a timing different from that of the above embodiment. For example, the control unit 68 may execute the process of determining the type of the reel 30 at a random timing between the time when the rebar binding machine 2 is switched from an off state to an on state (for example, the time when the main power switch 50 is switched from off to on, or the time when the battery pack BP is attached to the battery attachment part 18) and the time when a predetermined time (for example, 5 seconds) has elapsed. Alternatively, the control unit 68 may execute the process of determining the type of the reel 30 at a timing when a predetermined time (for example, 10 minutes) has elapsed after the completion of the bundling process of S14 in FIG. 16 (or S40 in FIG. 35 and FIG. 37). Alternatively, the control unit 68 may execute the process of determining the type of the reel 30 periodically every time a predetermined time (for example, 5 minutes) has elapsed. Alternatively, the control unit 68 may execute a process of determining the type of the reel 30 when a predetermined time (for example, one second) has elapsed since the rebar binding machine 2 was switched from the OFF state to the ON state. [Explanation of symbols]

[0261] 2: Rebar binding machine 10: Reel cover 22: Reel storage section 24: Trigger 28: Bobbin 28A: First bobbin 28B: 2nd bobbin 28C: 3rd bobbin 30: Reel 30A: 1st reel 30B: 2nd reel 30C: 3rd reel 36: Right reel mounting unit 42: Insertion tube 44:Cylinder part 46: Bottom wall 46a: Through hole 50: Main power switch 52: Display section 60: Feed unit 62: Guidance unit 64: Cutting unit 66: Torsion unit 68: Control unit 100: Torso 102: Left brim 104: Right brim 106: 1st Information Department 110: Body 110a: Outer surface 110b: Inner peripheral surface 112: Partition 114: Interior space 116: 1st internal space 118:Second internal space 122: 1st protrusion 124: First protrusion length 128:Second Information Department 130: 2nd protrusion 132: Second protrusion length 136:Third Information Department 138: Third protrusion 140: Third protrusion length 150:Detection unit 152: Movable parts 154: Pressing member 156: Detector 162: Operated part 170: Magnetic sensor 170a: First magnetic sensor 170b: second magnetic sensor 170c: 3rd magnetic sensor 222: First Rib 224: First protrusion length 230: Second rib 232: Second protrusion length 270: First movable member 272: First biasing member 274: Second movable member 276: Second biasing member 278: Detector 298: Magnet 298a: First magnet 298b: Second magnet 302: Magnetic sensor 302a: First magnetic sensor 302b: second magnetic sensor 402: Bobbin parts 404: Information materials 404A: First information member 404B: Second information member 404C: Third information material 406: Partition plate 406a: Through hole 406b: Engagement protrusion 406c: Engagement recess 408: Flange part 408a :Notch 410:Protrusion 412: Guide section 414: Engagement claw part 502: Bobbin parts 504: Information materials 504A: First information member 504B: Second information member 504C: Third information material 506: Partition plate 506a: Through hole 506b: Support protrusion 506c: Anti-rotation part 506d: Engagement part 508: Flange part 508a :Notch 510:Protrusion 512: knob part AX1: Central axis BP: Battery pack R: Reinforcement bar W: Wire

Claims

1. A reel comprising a bobbin and a wire wound around the bobbin, A reel mounting unit to which the aforementioned reel is attached, A feeding unit that feeds the wire wound around the bobbin, A guide unit for guiding the aforementioned wire around the reinforcing bar, A twisting unit for twisting the wire around the reinforcing bar, It includes a detection unit for detecting the type of reel, The bobbin mentioned above is The body around which the wire is wound, the body having a first internal space into which the reel mounting unit is inserted, It comprises an information unit that holds type information indicating the type of the reel, The detection unit is located in the first internal space when the reel is attached to the reel mounting unit, in a rebar tying machine.

2. The information unit is equipped with a projection that protrudes from the body portion, The projection has different protruding lengths depending on the type of the reel. The rebar tying machine according to claim 1, wherein the protruding length is the type information.

3. The rebar tying machine according to claim 2, wherein the projection is arranged in the first internal space.

4. The aforementioned torso is, It has a cylindrical shape and a body with an internal space, The body of the main body is provided with a partition that divides the internal space into a first internal space and a second internal space different from the first internal space. The rebar tying machine according to claim 3, wherein the projection protrudes from the partition body.

5. When the reel is attached to the reel mounting unit, it rotates around its central axis. The rebar tying machine according to claim 3, wherein the projection is arranged on the central axis and extends along the central axis.

6. The aforementioned detection unit is A movable member which is positioned in an initial position when the reel mounting unit is not inserted into the first internal space, and which is pressed by the projection and moves from the initial position when the reel mounting unit is inserted into the first internal space, The rebar tying machine according to claim 3, further comprising a detector for detecting the position of the movable member.

7. The reel mounting unit includes an insertion cylinder portion that is inserted into the first internal space, The rebar tying machine according to claim 6, wherein the detector is located inside the insertion cylinder.

8. The aforementioned insertion tube portion is The wall portion facing the reel when inserted into the first internal space, It is equipped with a through hole that penetrates the aforementioned wall portion, The rebar tying machine according to claim 7, wherein the projection penetrates the through hole and presses the movable member toward the interior of the insertion cylinder when the insertion cylinder is inserted into the first internal space.

9. The rebar tying machine according to claim 6, wherein the detection unit further comprises a biasing member that biases the movable member to the initial position.

10. The rebar tying machine according to claim 1, wherein the bobbin rotates around the reel mounting unit.

11. The rebar tying machine according to claim 10, wherein the hardness of the reel mounting unit is higher than the hardness of the bobbin.

12. The detection unit includes a contact portion that contacts the bobbin when the reel is attached to the reel mounting unit, The rebar tying machine according to claim 11, wherein the hardness of the contact portion is higher than the hardness of the bobbin.

13. The system further includes a control unit that controls the feeding unit and the twisting unit to perform a binding process in which the reinforcing bars are bound together using the wire. The rebar tying machine according to claim 1, wherein the control unit detects the type of the reel using the detection unit during the tying process.

14. A reel comprising a bobbin and a wire wound around the bobbin, A reel mounting unit to which the aforementioned reel is attached, A feeding unit that feeds the wire wound around the bobbin, A guide unit for guiding the aforementioned wire around the reinforcing bar, A twisting unit for twisting the wire around the reinforcing bar, It includes a detection unit for detecting the type of reel, The bobbin is provided with protrusions having different protruding lengths depending on the type of reel, The detection unit detects the type of the reel based on the protruding length of the projection, in a rebar tying machine.

15. A reel mounting unit to which a first reel having a first projection and wire having a first protruding length and a second reel having a second projection and wire having a second protruding length can be selectively attached, A feeding unit that feeds the aforementioned wire, A guide unit for guiding the aforementioned wire around the reinforcing bar, A twisting unit for twisting the wire around the reinforcing bar, A rebar tying machine comprising a detection unit capable of detecting the first projection or the second projection.

16. A reel used in a rebar tying machine, Bobbin and, The system comprises a wire wound around the bobbin, The aforementioned rebar tying machine is A reel mounting unit to which the aforementioned reel is attached, A feeding unit that feeds the wire wound around the bobbin, A guide unit for guiding the aforementioned wire around the reinforcing bar, A twisting unit for twisting the wire around the reinforcing bar, It includes a detection unit for detecting the type of reel, The bobbin mentioned above is An information unit that holds type information indicating the type of the reel, A reel comprising: a body around which the wire is wound, the body into which the reel mounting unit is inserted, and the body having a first internal space in which the detection unit is positioned when the reel mounting unit is inserted.

17. The reel according to claim 16, wherein the information unit is located in the first internal space.

18. A reel used in a rebar tying machine, Bobbin and, The system comprises a wire wound around the bobbin, The aforementioned rebar tying machine is A reel mounting unit to which the aforementioned reel is attached, A feeding unit that feeds the wire wound around the bobbin, A guide unit for guiding the aforementioned wire around the reinforcing bar, A twisting unit for twisting the wire around the reinforcing bar, It includes a detection unit for detecting the type of reel, The bobbin has different protrusion lengths depending on the type of the reel, and the bobbin is provided with a projection that allows the detection unit to detect the type of the reel based on the protrusion length.

19. A reel used in a rebar tying machine, Bobbin and, The system comprises a wire wound around the bobbin, The bobbin is a reel having protrusions having different protruding lengths depending on the type of reel.

20. It is a rebar tying machine, A reel comprising a bobbin and a wire wound around the bobbin, A reel mounting unit to which the aforementioned reel is attached, A feeding unit that feeds the wire wound around the bobbin, A guide unit for guiding the aforementioned wire around the reinforcing bar, A twisting unit for twisting the wire around the reinforcing bar, A detection unit for detecting the type of reel, A main power switch for switching the rebar tying machine between the ON and OFF states, An alarm unit that broadcasts error information, The system includes a control unit that controls the feed unit, the twisting unit, and the notification unit, and a control unit that receives a signal from the detection unit regarding the type of the reel, The control unit controls the notification unit when the signal received from the detection unit changes while the rebar tying machine is in the ON state.

21. It is a rebar tying machine, A reel mounting unit to which a reel comprising a bobbin and a wire wound around the bobbin is attached, A detection unit for detecting the type of reel, A main power switch for switching the rebar tying machine between the ON and OFF states, A signal receiving unit that receives a signal relating to the type of the reel from the detection unit, A rebar tying machine comprising: an alarm unit that alarms error information when the signal received by the signal receiving unit changes while the rebar tying machine is in the ON state.

22. The bobbin further comprises a first member and a second member different from the first member. The information unit is provided in the first member, The rebar tying machine according to claim 1, wherein the body portion is provided on the second member.

23. When the reel is attached to the reel mounting unit, it rotates around its central axis. The information unit is located on the central axis within the first internal space and includes a projection extending along the central axis. The projection has different protruding lengths depending on the type of the reel. The rebar tying machine according to claim 22, wherein the protruding length is the type information.

24. The rebar tying machine according to claim 22, wherein the first member is fixed to the second member with a retaining mechanism.

25. The second member has a through hole formed in it. The rebar tying machine according to claim 24, wherein the first member penetrates the through hole.

26. The rebar tying machine according to claim 25, wherein the first member can be inserted into and removed from the through hole from the side opposite to the first internal space.

27. The bobbin comprises a first member and a second member different from the first member. The information unit is provided in the first member, The reel according to claim 16, wherein the body portion is provided on the second member.

28. A reel used in a rebar tying machine, Bobbin and, The system comprises a wire wound around the bobbin, The aforementioned rebar tying machine is A reel mounting unit to which the aforementioned reel is attached, A feeding unit that feeds the wire wound around the bobbin, A guide unit for guiding the aforementioned wire around the reinforcing bar, A twisting unit for twisting the wire around the reinforcing bar, It includes a detection unit having a magnet, The bobbin mentioned above is The aforementioned magnet has a movable projection, A reel comprising: a body around which the wire is wound, the body into which the reel mounting unit is inserted, and the body having a first internal space in which the magnet is positioned when the reel mounting unit is inserted.

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