Steel bar binding machine and winding drum

Abstract

The invention provides a rebar binding machine and a reel, and at least one of the reel and the rebar binding machine is prevented from becoming large. The reinforcing steel bar binding machine is provided with: a reel having a reel and a steel wire wound around the reel; a reel mounting unit on which the reel is mounted; a feeding unit that feeds the steel wire wound around the reel; a guide unit for guiding the steel wire to the periphery of the reinforcing steel bar; a twisting unit for twisting the steel wires around the reinforcing steel bars; and a detection unit that detects the type of the reel. The reel includes: a main body around which a wire is wound and which has a first internal space into which the spool attachment unit is inserted; and an information unit that holds type information indicating the type of the reel. The detection unit is disposed in the first internal space when the spool is attached to the spool attachment unit.

Description

Technical Field

[0001] This specification relates to a rebar tying machine and a reel. Background Art

[0002] Japanese Patent Application Laid-Open No. 2023-075730 discloses a steel bar bundling machine. The steel bar bundling machine includes: a reel having a reel and a steel wire wound on the reel; a reel mounting unit on which the reel is mounted; a feeding unit that feeds the steel wire wound on the reel; a guiding unit that guides the steel wire around the steel bar; a twisting unit that twists the steel wire around the steel bar; and a detection unit that detects the type of the reel. The reel includes: a main body on which the steel wire is wound and which has a first internal space for inserting the reel mounting unit; a pair of flanges disposed at both ends of the main body; and an information portion that protrudes outward from the outer surface of the flange portion, the information portion holding type information indicating the type of the reel. Summary of the invention

[0003] Problem that the invention aims to solve

[0004] In the above-mentioned reinforcing bar binding machine, the information part protrudes outward from the outer surface of the flange part. Thus, the reel is enlarged. In addition, since the information part is arranged on the outer surface of the flange part, the detection unit is arranged on the outer side of the reel. Thus, the reinforcing bar binding machine is enlarged.

[0005] In addition, in the above-mentioned reinforcing bar binding machine, the information part has at least one of the first rib, the second rib and the third rib. The detection unit detects the type of the reel based on the combination of ribs selected from the first rib, the second rib and the third rib. In this structure, a plurality of ribs are required. As a result, the structure of the reel becomes complicated.

[0006] In addition, in the above-mentioned steel bar bundling machine, there is a case where the reel is removed from the reel mounting unit when the steel bar bundling machine is in the open state. In this structure, when the reel is reinstalled on the reel mounting unit while the steel bar bundling machine remains in the open state, the arrangement of the steel wire is different from the arrangement of the steel wire before the reel is installed on the reel mounting unit. When the steel bar bundling machine is used to bundle steel bars in a state where the arrangement of the steel wire before and after the reel is installed is different, there is a case where the steel bars are poorly bundled. Therefore, it is necessary to suppress the operation of the user to use the steel bar bundling machine to bundle steel bars.

[0007] In this embodiment, the purpose is to provide at least one of a technology that can suppress the enlargement of at least one of the reel and the rebar tying machine, a technology that can suppress the complexity of the structure of the reel, and a technology that can suppress the user's operation of tying rebars using the rebar tying machine.

[0008] Solutions for solving problems

[0009] The rebar tying machine disclosed in this specification includes: a reel having a reel and a steel wire wound on the reel; a reel installation unit on which the reel is installed; a feeding unit that feeds the steel wire wound on the reel; a guiding unit that guides the steel wire around the rebar; a twisting unit that twists the steel wire around the rebar; and a detection unit that detects the type of the reel. The reel includes: a main body on which the steel wire is wound and which has a first internal space for inserting the reel installation unit; and an information unit that holds type information indicating the type of the reel. When the reel is installed on the reel installation unit, the detection unit is arranged in the first internal space.

[0010] According to the above configuration, when the reel is mounted on the reel mounting unit, the detection unit is arranged in the first internal space of the reel. Therefore, compared with a configuration in which the detection unit is not arranged in the first internal space of the reel when the reel is mounted on the reel mounting unit, the size of the reinforcing bar tying machine can be suppressed.

[0011] Another steel bar tying machine disclosed in this specification includes: a reel having a reel and a steel wire wound on the reel; a reel mounting unit on which the reel is mounted; a feeding unit that feeds the steel wire wound on the reel; a guiding unit that guides the steel wire around the steel bar; a twisting unit that twists the steel wire around the steel bar; and a detection unit that detects the type of the reel. The reel has a protrusion, and the protrusion has a different protrusion length according to the type of the reel. The detection unit detects the type of the reel based on the protrusion length of the protrusion.

[0012] According to the above structure, the protrusion length varies depending on the type of the reel. By changing the protrusion length, the type of reel can be distinguished while suppressing the increase in the number of protrusions. Thus, the structure of the reel can be suppressed from becoming complicated.

[0013] Another steel bar bundling machine disclosed in the present specification comprises: a drum installation unit, which can selectively install a first drum and a second drum, the first drum including a first protrusion with a first protrusion length and a steel wire, and the second drum including a second protrusion with a second protrusion length and a steel wire; a feeding unit, which feeds the steel wire; a guiding unit, which guides the steel wire to the periphery of the steel bar; a twisting unit, which twists the steel wire around the steel bar; and a detection unit, which can detect the first protrusion or the second protrusion.

[0014] According to the above structure, the protrusion length varies depending on the type of the reel. By changing the protrusion length, the type of reel can be distinguished while suppressing the increase in the number of protrusions. Thus, the structure of the reel can be suppressed from becoming complicated.

[0015] The reel disclosed in this specification is used in a steel bar bundling machine. The reel includes a reel and a steel wire wound on the reel. The steel bar bundling machine includes: a reel installation unit, on which the reel is installed; a feeding unit, which feeds the steel wire wound on the reel; a guiding unit, which guides the steel wire around the steel bar; a twisting unit, which twists the steel wire around the steel bar; and a detection unit, which detects the type of the reel. The reel includes: an information part, which retains type information indicating the type of the reel; a main body, which is wound with the steel wire and has a first internal space, the first internal space is for the reel installation unit to be inserted, and when the reel installation unit is inserted, the detection unit is arranged in the first internal space.

[0016] According to the above configuration, when the reel is mounted on the reel mounting unit, the detection unit is arranged in the first internal space of the reel. Therefore, compared with a configuration in which the detection unit is not arranged in the first internal space of the reel when the reel is mounted on the reel mounting unit, the size of the reinforcing bar tying machine can be suppressed.

[0017] Another reel disclosed in this specification is used in a steel bar bundling machine. The reel includes a reel and a steel wire wound on the reel. The steel bar bundling machine includes: a reel installation unit on which the reel is installed; a feeding unit that feeds the steel wire wound on the reel; a guiding unit that guides the steel wire around the steel bar; a twisting unit that twists the steel wire around the steel bar; and a detection unit that detects the type of the reel. The reel includes a protrusion having a different protrusion length according to the type of the reel, and the type of the reel is detected by the detection unit based on the protrusion length.

[0018] According to the above structure, the protrusion length varies depending on the type of the reel. By changing the protrusion length, the type of reel can be distinguished while suppressing the increase in the number of protrusions. Thus, the structure of the reel can be suppressed from becoming complicated.

[0019] Another reel disclosed in this specification is used in a reinforcing bar binding machine. The reel includes a reel and a steel wire wound around the reel. The reel includes a protrusion having a different protrusion length depending on the type of the reel.

[0020] According to the above structure, the protrusion length varies depending on the type of the reel. By changing the protrusion length, the type of reel can be distinguished while suppressing the increase in the number of protrusions. Thus, the structure of the reel can be suppressed from becoming complicated.

[0021] Alternatively, another steel bar binding machine disclosed in the present specification includes: a reel having a reel and a steel wire wound on the reel; a reel installation unit on which the reel is installed; a feeding unit that feeds the steel wire wound on the reel; a guiding unit that guides the steel wire around the steel bar; a twisting unit that twists the steel wire around the steel bar; a detection unit that detects the type of the reel; a main power switch that switches the steel bar binding machine between an on state and an off state; a reporting unit that reports error information; and a control unit that controls the feeding unit, the twisting unit, and the reporting unit, and receives a signal related to the type of the reel from the detection unit. When the signal received from the detection unit changes when the steel bar binding machine is in an on state, the control unit controls the reporting unit.

[0022] According to the above configuration, when the signal received from the detection unit changes when the reinforcing bar tying machine is in the on state, for example, when the reel is removed from the reel mounting unit when the reinforcing bar tying machine is in the on state, the reporting unit reports error information. Thus, the user can recognize the error information. Therefore, it is possible to prevent the user from mounting the reel on the reel mounting unit again and using the reinforcing bar tying machine to perform reinforcing bar tying without arranging the top end of the steel wire at the correct position.

[0023] Another rebar bundling machine disclosed in the present specification comprises: a drum installation unit, on which a reel is installed, the reel having a reel and a steel wire wound on the reel; a detection unit, which detects the type of the reel; a main power switch, which switches the rebar bundling machine between an on state and an off state; a signal receiving unit, which receives a signal related to the type of the reel from the detection unit; and a reporting unit, which reports an error message when a signal received by the signal receiving unit changes when the rebar bundling machine is in an on state.

[0024] According to the above configuration, by the user recognizing the erroneous information, it is possible to prevent the user from tying reinforcing bars using the reinforcing bar tying machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a perspective view of the reinforcing bar binding machine 2 according to the first embodiment.

[0026] Figure 2 It is a left side view of the reinforcing bar binding machine 2 of the first embodiment in a state where the left side housing 8 and the drum cover 10 are removed.

[0027] Figure 3 This is a perspective view of the state where the reel cover 10 is opened in the reinforcing bar tying machine 2 of the first embodiment.

[0028] Figure 4It is a perspective view of the reel storage section 22 of the reinforcing bar tying machine 2 according to the first embodiment.

[0029] Figure 5 It is a cross-sectional view of the reel housing portion 22 and the reel 30 of the reinforcing bar tying machine 2 according to the first embodiment.

[0030] Figure 6 This is a perspective view of the first reel 30A according to the first embodiment as viewed from the right side.

[0031] Figure 7 It is a cross-sectional view of the first reel 30A of the first embodiment.

[0032] Figure 8 This is a perspective view of the first reel 30A according to the first embodiment as viewed from the left side.

[0033] Fig. 9 It is a cross-sectional view of the second reel 30B of the first embodiment.

[0034] Fig.10 It is a cross-sectional view of the third reel 30C of the first embodiment.

[0035] Fig.11 It is a horizontal cross-sectional view of the right reel mounting unit 36 ​​and the detection unit 150 of the first embodiment.

[0036] Fig.12 It is a longitudinal sectional view of the right reel mounting unit 36 ​​and the detection unit 150 according to the first embodiment.

[0037] Fig.13 It is a horizontal cross-sectional view of the first reel 30A, the right reel mounting unit 36 ​​and the detection unit 150 of the first embodiment.

[0038] Fig.14 It is a horizontal cross-sectional view of the second reel 30B, the right reel mounting unit 36 ​​and the detection unit 150 of the first embodiment.

[0039] Fig.15 It is a horizontal cross-sectional view of the third reel 30C, the right reel mounting unit 36 ​​and the detection unit 150 of the first embodiment.

[0040] Fig.16 This is a flowchart of the processing executed by the control unit 68 of the first embodiment.

[0041] Fig.17 This is a perspective view of the first reel 30A according to the second embodiment as viewed from the right side.

[0042] Fig.18 It is a cross-sectional view of the first reel 30A of the second embodiment.

[0043] Fig.19It is a cross-sectional view of the second reel 30B of the second embodiment.

[0044] Fig. 20 It is a cross-sectional view of the third reel 30C of the second embodiment.

[0045] Fig.21 It is a horizontal cross-sectional view of the right reel mounting unit 36 ​​and the detection unit 150 according to the second embodiment.

[0046] Fig. 22 It is a horizontal cross-sectional view of the first reel 30A, the right reel mounting unit 36, and the detection unit 150 of the second embodiment.

[0047] Fig.23 It is a horizontal cross-sectional view of the second reel 30B, the right reel mounting unit 36 ​​and the detection unit 150 of the second embodiment.

[0048] Fig.24 It is a horizontal cross-sectional view of the third reel 30C, the right reel mounting unit 36 ​​and the detection unit 150 of the second embodiment.

[0049] Fig.25 It is a cross-sectional view of the reel housing portion 22 and the reel 30 of the reinforcing bar tying machine 2 according to the third embodiment.

[0050] Fig.26 It is a cross-sectional view of the reel 30 according to the third embodiment.

[0051] Fig. 27 This is a perspective view of the reel member 402 according to the third embodiment as viewed from the left side.

[0052] Fig.28 This is a perspective view showing a state where an information member 404 is attached to a reel member 402 according to the third embodiment, as viewed from the right side.

[0053] Fig.29 This is a perspective view of the information member 404 according to the third embodiment as viewed from the left side.

[0054] Fig.30 It is a cross-sectional view of the reel housing portion 22 and the reel 30 of the reinforcing bar tying machine 2 according to the fourth embodiment.

[0055] Fig.31 It is a cross-sectional view of the reel 30 according to the fourth embodiment.

[0056] Fig.32 This is a perspective view showing a state where an information member 504 is attached to a reel member 502 according to the fourth embodiment, as viewed from the left side.

[0057] Fig.33 This is a perspective view showing another state when the information member 504 is attached to the reel member 502 according to the fourth embodiment, as viewed from the left side.

[0058] Fig.34 This is a perspective view showing another state when the information member 504 is mounted on the reel member 502 of the fourth embodiment as viewed from the left side.

[0059] Fig.35 This is another example of a flowchart of the process executed by the control unit 68 of the first embodiment.

[0060] Fig.36 This is an example of a flowchart of the type determination process executed by the control unit 68 of the first embodiment.

[0061] Fig.37 This is another example of a flowchart of the process executed by the control unit 68 of the first embodiment. DETAILED DESCRIPTION

[0062] Representative and non-limiting specific examples of the present invention are described in detail below with reference to the accompanying drawings. This detailed description is intended to simply show the details of a preferred example for implementing the present invention to those skilled in the art, and is not intended to limit the scope of the present invention. In addition, in order to provide a further improved reinforcing bar tying machine and reel, a manufacturing method thereof, and a method of using the same, the additional features and technical solutions disclosed below can be used separately from other features and technical solutions or used together with other features and technical solutions.

[0063] In addition, the combination of features and processes disclosed in the following detailed description is not necessary for implementing the present invention in the broadest sense, but is recorded only for the purpose of specifically illustrating the representative specific examples of the present invention. Furthermore, when providing additional and useful embodiments of the present invention, the various features of the representative specific examples described above and below and the various features described in the independent claims and dependent claims do not necessarily have to be combined as in the specific examples described herein or in the order in which they are listed.

[0064] All features described in this specification and / or claims are intended to be disclosed separately and independently of each other, independent of the structures of the features described in the embodiments and / or claims, as limitations on the disclosure of the original application and the specific matters described in the claims. Furthermore, the descriptions related to all numerical ranges and groups or groups have the intention of disclosing the structures among them as limitations on the disclosure of the original application and the specific matters described in the claims.

[0065] In one or more embodiments, a steel bar tying machine includes: a reel having a reel and a steel wire wound on the reel; a reel mounting unit on which the reel is rotatably mounted; a feeding unit that feeds the steel wire wound on the reel; a guiding unit that guides the steel wire around the steel bar; a twisting unit that twists the steel wire around the steel bar; and a detection unit that detects the type of the reel. The reel includes: a main body on which the steel wire is wound, the main body having a first internal space into which the reel mounting unit is inserted; and an information unit that holds type information indicating the type of the reel. When the reel is mounted on the reel mounting unit, the detection unit is disposed in the first internal space.

[0066] In one or more embodiments, the information portion may include a protrusion protruding from the main body portion. The protrusion may have a different protrusion length depending on the type of the reel. The protrusion length may also be type information.

[0067] According to the above structure, the protrusion length varies depending on the type of the reel. By changing the protrusion length, the type of reel can be distinguished while suppressing the increase in the number of protrusions. Thus, the structure of the reel can be suppressed from becoming complicated.

[0068] In one or more embodiments, the protrusion may be arranged in the first internal space.

[0069] According to the above configuration, compared with a configuration in which the projection is not arranged in the first internal space, it is possible to suppress an increase in the size of the reel.

[0070] In one or more embodiments, the main body may include: a main body having a cylindrical shape and an internal space; and a partition that divides the internal space of the 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.

[0071] According to the above configuration, by arranging the protrusion on the partition body, the protrusion can be easily arranged in the first internal space.

[0072] In one or more embodiments, the reel may rotate around the central axis when mounted on the reel mounting unit. Alternatively, the protrusion may be arranged on the central axis and extend along the central axis.

[0073] 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 spool rotates.

[0074] In one or more embodiments, the detection unit may include: a movable component, which is configured at an initial position when the reel mounting unit is not inserted into the first internal space, and is pressed by the protrusion to move from the initial position when the reel mounting unit is inserted into the first internal space; and a detector, which detects the position of the movable component.

[0075] According to the above configuration, when the reel is mounted on the reel mounting unit, the position of the movable member relative to the initial position varies 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.

[0076] In one or more embodiments, the reel installation unit may include an insertion tube that can be inserted into the first internal space. The detector may be arranged inside the insertion tube.

[0077] According to the above configuration, it is possible to prevent the detector from coming into contact with the reel and being damaged.

[0078] In one or more embodiments, the insertion tube may include: a wall portion, which is opposite to the reel when the insertion tube is inserted into the first internal space; and a through hole that passes through the wall portion. Alternatively, when the insertion tube is inserted into the first internal space, the protrusion passes through the through hole and presses the movable member toward the inside of the insertion tube.

[0079] According to the above configuration, when the reel is mounted on the reel mounting unit, the movable member is disposed inside the insertion tube portion, thereby making it possible to easily detect the position of the movable member using the detector.

[0080] In one or more embodiments, the detection unit may further include a biasing member that biases the movable member toward an initial position.

[0081] 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.

[0082] In one or more embodiments it may be that the spool rotates about the spool mounting unit.

[0083] In the structure in which the reel rotates together with the reel mounting unit, a structure for rotating the reel mounting unit is required. As a result, the structure of the steel bar bundling machine becomes complicated. According to the above structure, compared with the structure in which the reel rotates together with the reel mounting unit, the structure of the steel bar bundling machine can be suppressed from becoming complicated.

[0084] In one or more embodiments, the reel mounting unit may have a higher hardness than the reel.

[0085] According to the above configuration, it is possible to suppress wear of the reel mounting unit.

[0086] In one or more embodiments, the detection unit may include a contact portion that contacts the reel when the reel is mounted on the reel mounting unit. The hardness of the contact portion may be higher than that of the reel.

[0087] According to the above configuration, wear of the contact portion can be suppressed.

[0088] In one or more embodiments, the reinforcing bar bundling machine may further include a control unit that controls the feeding unit and the twisting unit to perform a bundling process of bundling the reinforcing bars using the steel wire. The control unit may detect the type of the drum using the detection unit during the bundling process.

[0089] According to the above configuration, the feeding unit and the twisting unit can be controlled based on the type of the drum detected during the bundling process, thereby preventing the occurrence of reinforcing bar bundling defects.

[0090] In one or more embodiments, a reel is used in a steel bar bundling machine. The reel includes a reel and a steel wire wound on the reel. The steel bar bundling machine includes: a reel installation unit, on which the reel is installed; a feeding unit, which feeds the steel wire wound on the reel; a guiding unit, which guides the steel wire around the steel bar; a twisting unit, which twists the steel wire around the steel bar; and a detection unit, which detects the type of the reel. The reel includes: an information part, which retains type information indicating the type of the reel; a main body, which is wound with the steel wire and has a first internal space, the first internal space is for the reel installation unit to be inserted, and the detection unit is arranged in the first internal space when the reel installation unit is inserted.

[0091] In one or more embodiments, the information unit may be arranged in the first internal space.

[0092] According to the above configuration, it is possible to suppress an increase in the size of the reel.

[0093] In one or more embodiments, the reel 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 main body portion may be provided on the second member.

[0094] According to the above configuration, different types of first members may be prepared for different types of reels, and the second member can be shared.

[0095] In one or more embodiments, the reel may rotate around the central axis when mounted on the reel mounting unit. Alternatively, the information portion may include a protrusion, which is arranged on the central axis in the first internal space and extends along the central axis. The protrusion may have a different protrusion length according to the type of the reel. The protrusion length may be the type information.

[0096] According to the above configuration, the types of the reels can be distinguished by a simple configuration of changing the protrusion length of the protrusion. In addition, the position of the protrusion relative to the central axis can be suppressed from changing when the reel rotates.

[0097] In one or more embodiments, the first member may be fixed to the second member in a manner that prevents it from coming off.

[0098] According to the above configuration, it is possible to suppress the first member from accidentally falling off from the second member.

[0099] In one or more embodiments, a through hole may be formed in the second member, and the first member may pass through the through hole.

[0100] Assuming that the second member is not formed with a through hole, it is difficult to fix the first member to the second member in a manner that prevents it from coming off. According to the above structure, the through hole formed in the second member can be used to fix the first member to the second member in a manner that prevents it from coming off with a simple structure.

[0101] In one or more embodiments, if the first member is inserted into the through hole from a side opposite to the first internal space, the first member can be removed from the through hole.

[0102] According to the above configuration, it is possible to more easily perform the work of attaching the first member to the second member and the work of detaching the first member from the second member.

[0103] In one or more embodiments, the rebar bundling machine may include: a reel having a reel and a steel wire wound on the reel; a reel mounting unit on which the reel is mounted; a feeding unit that feeds the steel wire wound on the reel; a guiding unit that guides the steel wire around the rebar; a twisting unit that twists the steel wire around the rebar; a detection unit that detects the type of the reel; and a control unit that controls the feeding unit and the twisting unit to perform a bundling process of bundling the rebars using the steel wire. When the rebar bundling machine is switched from a closed state to an open state, the control unit detects the type of the reel using the detection unit.

[0104] According to the above configuration, the type of the reel can be detected at a time point after the reinforcing bar tying machine is switched from the closed state to the open state and before the tying process is performed.

[0105] In one or more embodiments, the rebar bundling machine may include: a reel having a reel and a steel wire wound on the reel; a reel mounting unit on which the reel is mounted; a feeding unit that feeds the steel wire wound on the reel; a guiding unit that guides the steel wire around the rebar; a twisting unit that twists the steel wire around the rebar; a detection unit that detects the type of the reel; an operating member; and a control unit that controls the feeding unit and the twisting unit to perform a bundling process of bundling the rebars using the steel wire when the operating member is operated. Alternatively, when the rebar bundling machine is in an open state, after the operating member is operated and before the bundling process is performed, the control unit uses the detection unit to detect the type of the reel.

[0106] According to the above configuration, the type of the reel can be detected at a time point after the operation member is operated and before the bundling process is performed.

[0107] In one or more embodiments, the rebar tying machine may include: a reel having a reel and a steel wire wound on the reel; a reel mounting unit on which the reel is mounted; a feeding unit that feeds the steel wire wound on the reel; a guiding unit that guides the steel wire around the rebar; a twisting unit that twists the steel wire around the rebar; a detection unit that detects the type of the reel; an operating member; and a control unit that controls the feeding unit and the twisting unit to perform a bundling process of bundling the rebars using the steel wire when the operating member is operated. Alternatively, when the rebar tying machine is in an open state, after performing the bundling process and before the operating member is subsequently operated, the control unit uses the detection unit to detect the type of the reel.

[0108] According to the above configuration, the type of the reel can be detected at a time point after the bundling process is performed and before the operation member is subsequently operated to perform the bundling process again.

[0109] (First embodiment)

[0110] like Figure 1As shown, the steel bar bundling machine 2 uses a steel wire W to bundle a plurality of steel bars R. In the steel bar bundling machine 2, steel wires W of various diameters (e.g., diameters of 0.5 mm to 2.5 mm) are used in accordance with the diameters of the steel bars R used. For example, when bundling thin steel bars R having a diameter of 16 mm or less (e.g., a diameter of 16 mm), steel wires W having a diameter of 1.6 mm or less (e.g., 0.8 mm) are used, and when bundling thick steel bars R having a diameter of more than 16 mm (e.g., a diameter of 25 mm or 32 mm), steel wires W having a diameter of 1.6 mm or more (e.g., 2.0 mm) are used. The following will describe the twisting unit 66 (see Figure 2 ) is called the front-to-back direction, the direction perpendicular to the front-to-back direction is called the up-down direction, and the direction perpendicular to the front-to-back direction and the up-down direction is called the left-right direction.

[0111] The reinforcing bar binding machine 2 includes a main body 4 and a battery pack BP. The main body 4 includes a right case 6 defining the outer shape of the right half of the main body 4, a left case 8 defining the outer shape of the left half of the main body 4, and a reel cover 10 rotatably mounted on the front lower part of the left case 8.

[0112] The main body 4 includes a twisting unit storage portion 14, a handle portion 16, a battery mounting portion 18, a feed unit storage portion 20, and a reel storage portion 22. The twisting unit storage portion 14, the handle portion 16, the battery mounting portion 18, and the feed unit storage portion 20 are formed by the right case 6 and the left case 8. The reel storage portion 22 is formed by the right case 6, the left case 8, and the reel cover 10.

[0113] like Figure 2 As shown, the twisting unit storage portion 14 extends in the front-to-back direction. The handle portion 16 is arranged at the rear lower portion of the twisting unit storage portion 14. The handle portion 16 is held by the user. The length direction of the handle portion 16 is slightly inclined relative to the up-down direction. A trigger 24 that can be pulled in is installed on the upper front surface of the handle portion 16.

[0114] The battery mounting portion 18 is disposed at the lower end of the handle portion 16. The battery pack BP is detachably mounted at the lower end of the battery mounting portion 18. The battery pack BP is mounted on the battery mounting portion 18 by sliding the battery pack BP toward the front lower side relative to the battery mounting portion 18, and is removed from the battery mounting portion 18 by sliding the battery pack BP toward the rear upper side relative to the battery mounting portion 18. The battery pack BP includes a secondary battery such as a lithium ion battery, for example.

[0115] The feed unit storage section 20 is disposed at a lower front portion of the twist unit storage section 14. The feed unit storage section 20 is disposed at a front side of the handle section 16.

[0116] The roll storage section 22 is disposed at the lower end of the feeding unit storage section 20. Figure 2 The reel storage portion 22 is shown by a dotted line in FIG. The reel storage portion 22 is connected to the front end of the battery mounting portion 18 via a connecting portion 23. Figure 3 As shown, the reel storage section 22 can store a reel 30 including a reel shaft 28 and a wire W.

[0117] The reel storage section 22 includes a base 34 and a right reel mounting unit 36 ​​(see Figure 4 ), and a left reel mounting unit 38. The base 34 is formed by the left housing 8 and the reel cover 10. The base 34 has a reel storage space 40 inside. The reel 30 is arranged in the reel storage space 40.

[0118] like Figure 4 As shown, the right reel mounting unit 36 ​​is formed in the left housing 8. The right reel mounting unit 36 ​​is arranged in the reel storage space 40. The right reel mounting unit 36 ​​includes an insertion cylinder 42. The insertion cylinder 42 is made of, for example, a resin material. The insertion cylinder 42 is fixed to the base 34 by a screw 43. The insertion cylinder 42 does not rotate relative to the base 34. The insertion cylinder 42 supports the reel 30 so that it can rotate.

[0119] The insertion cylinder 42 includes a cylinder 44 and a bottom wall 46. The cylinder 44 includes a first cylinder 44a having a substantially cylindrical shape and a second cylinder 44b having a substantially truncated cone shape. One end of the first cylinder 44a is connected to the base 34. The first cylinder 44a extends from the base 34 to the left. The second cylinder 44b extends from the other end of the first cylinder 44a to the left. The diameter of the second cylinder 44b decreases as it goes toward the left. Therefore, the reel 30 is guided by the second cylinder 44b and can be smoothly inserted into the insertion cylinder 42. The bottom wall 46 is arranged at the left end of the second cylinder 44b. The bottom wall 46 closes the opening at the left end of the second cylinder 44b.

[0120] like Figure 5 As shown, 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 arranged in the reel storage space 40. The left reel mounting unit 38 has a substantially truncated cone shape. The left reel mounting unit 38 does not rotate relative to the base 34. The left reel mounting unit 38 supports the reel 30 so as to be rotatable. In addition, the left reel mounting unit 38 is urged in the right direction toward the reel 30 by the force spring 48. As a result, the left reel mounting unit 38 is pressed against the reel 30. Therefore, it is possible to prevent the insertion barrel 42 and the left reel mounting unit 38 from detaching from the reel 30 when the reel 30 rotates.

[0121] like Figure 1As shown, the reinforcing bar tying machine 2 further includes a main power switch 50, a display unit 52, a mode switching switch 54, a tying force increase switch 56, and a tying force reduction switch 58. The main power switch 50, the display unit 52, the mode switching switch 54, the tying force increase switch 56, and the tying force reduction switch 58 are arranged on the rear surface of the feeding unit storage unit 20. The main power switch 50 is operated by the user. The main power switch 50 switches the on state and the off state of the reinforcing bar tying machine 2. For example, in the case where the main power switch 50 is a rocker switch, when the main power switch 50 is in the on state, power is supplied from the battery pack BP described later to the reinforcing bar tying machine 2, and the reinforcing bar tying machine 2 can be operated. When the main power switch 50 is in the off state, the power supply from the battery pack BP to the reinforcing bar tying machine 2 is cut off, and the reinforcing bar tying machine 2 cannot be operated. The display unit 52 displays information related to the reinforcing bar tying machine 2. The display unit 52 can be visually recognized by the user.

[0122] The mode switching switch 54 switches the mode of the reinforcing bar tying machine 2 between the single shot mode and the continuous shot mode. When the reinforcing bar tying machine 2 is in the single shot mode, each time the trigger 24 is pulled in, the reinforcing bar tying machine 2 uses the steel wire W to tie a plurality of reinforcing bars R. When the reinforcing bar tying machine 2 is in the continuous shot mode, the reinforcing bar tying machine 2 uses the steel wire W to tie a plurality of reinforcing bars R continuously while maintaining the state in which the trigger 24 is pulled in.

[0123] The tying force increase switch 56 increases the setting value of the tying force for tying the steel wires W by the reinforcing bar tying machine 2. The tying force reduction switch 58 reduces the setting value of the tying force for tying the steel wires W by the reinforcing bar tying machine 2. When the tying force increase switch 56 is operated, the setting value of the tying force for the steel wires W is increased by one level, and when the tying force reduction switch 58 is operated, the setting value of the tying force for the steel wires W is reduced by one level.

[0124] like Figure 2 As shown, the reinforcing bar tying 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 .

[0125] The feeding unit 60 is stored in the feeding unit storage portion 20. The feeding unit 60 includes a feeding motor 72 and a feeding roller unit 74. The feeding motor 72 is, for example, a brushless motor. The feeding motor 72 rotates by the power supplied from the battery pack BP. The feeding roller unit 74 is connected to the feeding motor 72 via a speed reducer (not shown). When the feeding motor 72 rotates, the feeding roller unit 74 rotates. The feeding roller unit 74 pulls the wire W out of the reel 28 by rotating in the forward direction and sends it to the upper front side toward the guide unit 62. In addition, the feeding roller unit 74 pulls the wire W back toward the reel 28 by rotating in the reverse direction.

[0126] The guide unit 62 is fixed to the front end of the twisting unit storage part 14. The guide unit 62 includes an upper curling guide 78 and a lower curling guide 80. The reinforcing bars R are arranged between the upper curling guide 78 and the lower curling guide 80 during bundling. The steel wire W fed from the feed roller unit 74 is first guided by the upper curling guide 78 and passes through the upper curling guide 78 from the rear to the front. While the steel wire W passes through the upper curling guide 78, the upper curling guide 78 imparts a downward winding tendency to the steel wire W. After passing through the upper curling guide 78, the steel wire W is guided by the lower curling guide 80 and passes through the lower curling guide 80 from the front to the rear. Thereafter, the steel wire W moves to the rear upper side. Thus, the steel wire W is wound around the reinforcing bars R.

[0127] The cutting unit 64 is accommodated in the twisting unit accommodating portion 14. The cutting unit 64 includes a cutter (not shown) for cutting the steel wire W fed from the feeding unit 60 to the guide unit 62. The steel wire W is cut by the rotation of the cutter.

[0128] The twisting unit 66 is stored in the twisting unit storage portion 14. The twisting unit 66 includes a twisting motor 84, a sleeve unit 86, and a holding clamp 88. The twisting motor 84 is located on the upper side of the handle portion 16. The twisting motor 84 is, for example, a brushless motor. The twisting motor 84 rotates by the power supplied from the battery pack BP. When the twisting motor 84 rotates, the sleeve unit 86 moves in the front-to-back direction, or rotates around a rotation axis extending in the front-to-back direction. The holding clamp 88 is located at the front of the twisting unit 66. When the sleeve unit 86 moves in the forward direction, the holding clamp 88 holds both ends of the steel wire W around the reinforcing bar R. When the sleeve unit 86 further rotates in the forward direction from this state, the holding clamp 88 rotates integrally with the sleeve unit 86. As a result, the holding clamp 88 twists the steel wire W. As a result, the reinforcing bar R is bundled with the steel wire W. Furthermore, when the sleeve unit 86 rotates in the reverse direction, the wire W is released from the gripping jig 88 and the sleeve unit 86 moves in the rear direction.

[0129] The control unit 68 is stored in the battery mounting portion 18. The control unit 68 includes a control circuit board 92, which includes an MCU (not shown) and a switch element (not shown). When the reinforcing bar tying machine 2 is switched from the closed state to the open state, the control unit 68 controls the feed motor 72 to perform an initialization process for adjusting the position of the tip of the steel wire W. In addition, when the trigger 24 is pulled in by the user when the reinforcing bar tying machine 2 is in the open state, the control unit 68 controls the feed motor 72 and the twisting motor 84 to perform a tying process for tying the reinforcing bars R using the steel wire W.

[0130] In the reinforcing bar binding machine 2, various thicknesses of steel wire W are selected according to the diameter of the reinforcing bar R used. In addition, steel wire W covered with a covering body (e.g., resin material), stainless steel wire W, plated steel wire W, and annealed steel wire W are selected according to the use environment of the reinforcing bar R. In addition, steel wire W with an adjusted winding amount, such as a steel wire W with a large winding amount and a steel wire W with a small winding amount are selected according to the use frequency of the reinforcing bar binding machine 2. In addition, a resin reel 28 and a metal reel 28 can be selected. The type of the reel 30 can be distinguished according to the type of the steel wire W, can be distinguished according to the winding amount of the steel wire W, can be distinguished according to the material of the reel 28, and sometimes can be distinguished according to a combination of them. In this embodiment, the shape of the reel 28 is different according to the type of the reel 30.

[0131] like Figure 6 to Figure 10 As shown, three types of reels 30, i.e., a first reel 30A, a second reel 30B, and a third reel 30C are used in the reinforcing bar tying machine 2. Hereinafter, the reel 28 used in the first reel 30A is referred to as a first reel 28A, the reel 28 used in the second reel 30B is referred to as a second reel 28B, and the reel 28 used in the third reel 30C is referred to as a third reel 28C.

[0132] like Figure 6 As shown, the first reel 30A includes a wire W and a first reel 28A. The first reel 28A includes a main body 100 , a left flange 102 , a right flange 104 , and a first information portion 106 .

[0133] like Figure 7 As shown, the main body 100 includes a main body 110 and a separator 112. The main body 110 has a substantially cylindrical shape. The central axis AX1 of the main body 110 extends in the left-right direction. The steel wire W is wound on the outer peripheral surface 110a of the main body 110 in multiple layers. The main body 110 has an internal space 114. The internal space 114 is divided by the inner peripheral surface 110b of the main body 110.

[0134] The main body 110 of the main body part includes a protrusion 115a and a receiving portion 115b. The protrusion 115a is located at the left end of the main body 110 of the main body part. The protrusion 115a protrudes to the left direction than the left flange part 102. The protrusion 115a has a substantially cylindrical shape. The receiving portion 115b is located at the right end of the main body 110 of the main body part. Among the two first reels 30A, the receiving portion 115b of one first reel 30A receives the protrusion 115a of the other first reel 30A. Thus, a plurality of first reels 30A can be stacked.

[0135] like Figure 8As shown, the main body 110 of the main body has a through hole 110c. The through hole 110c passes through the protrusion 115a in the radial direction of the first reel 28A. The left end of the through hole 110c is not closed. The vicinity of the starting end of the steel wire W passes through the through hole 110c. The starting end of the steel wire W is in an anti-slip shape, such as a ring shape, and abuts against the inner circumferential surface 110b of the main body 110 of the main body. Thereby, the starting end of the steel wire W can be prevented from escaping from the first reel 28A.

[0136] like Figure 7 As shown, the partition 112 is arranged in the internal space 114. The partition 112 has a plate shape. The partition 112 is arranged on a plane including the up-down direction and the front-back direction. The partition 112 is approximately orthogonal 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 arranged on the right side of the partition 112. The second internal space 118 is arranged 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. Figure 5 As shown, the partition body 112 faces the bottom wall portion 46 of the insertion tube portion 42. In addition, the partition body 112 abuts against the bottom wall portion 46.

[0137] The insertion cylinder 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. In addition, the left reel mounting unit 38 is inserted into the second internal space 118 from the left side of the first reel 30A. Thus, the first reel 30A is supported by the insertion cylinder 42 and the left reel mounting unit 38. The first reel 30A can rotate around the insertion cylinder 42 and the left reel mounting unit 38. Thus, the first reel 30A slides on the insertion cylinder 42 and the left reel mounting unit 38. The first reel 30A rotates around the center axis AX1. In addition, the hardness of the insertion cylinder 42 and the hardness of the left reel mounting unit 38 are both higher than the hardness of the first reel 28A. Therefore, by rotating the first reel 30A around the insertion cylinder 42 and the left reel mounting unit 38, the insertion cylinder 42, the left reel mounting unit 38 and the operated portion 162 of the movable member 152 described later (refer to Fig.11 ) wear and tear.

[0138] like Figure 7 As shown, the left flange portion 102 and the right flange portion 104 have a wide annular shape. The left flange portion 102 is arranged at the left end of the main body 110 of the main body. The left flange portion 102 extends radially outward from the outer peripheral surface 110a of the main body 110. The right flange portion 104 is arranged at the right end of the main body 110. The right flange portion 104 extends radially outward from the outer peripheral surface 110a of the main body 110. The steel wire W is arranged between the left flange portion 102 and the right flange portion 104.

[0139] like Figure 8 As shown, the left flange portion 102 includes a left alignment portion 102a and a notch portion 102b. The left alignment portion 102a is a hole that passes through the left flange portion 102 in the left-right direction. The left alignment portion 102a extends from the outer peripheral edge of the left flange portion 102 to the outer peripheral surface 110a of the main body 110 of the main body. The left alignment portion 102a is arranged near the through hole 110c. The terminal of the steel wire W passes through the left alignment portion 102a.

[0140] The notch 102b is a hole that penetrates the left flange 102 in the left-right direction. The cross section of the notch 102b has a substantially triangular shape. The notch 102b is recessed from the outer peripheral edge of the left flange 102. After the steel wire W is wound around the first reel 28A using a steel wire winder (not shown), the notch 102b abuts against the steel wire W and cuts the steel wire W. Thus, the terminal of the steel wire W is formed.

[0141] The right flange portion 104 has a right alignment portion 104a. The right alignment portion 104a is a hole that penetrates the right flange portion 104 in the left-right direction. The right alignment portion 104a extends from the outer peripheral edge of the right flange portion 104 to the outer peripheral surface 110a of the main body 110 of the main body. The right alignment portion 104a and the left alignment portion 102a are arranged in the left-right direction. When the steel wire W is wound on the first reel 28A, the left alignment portion 102a and the right alignment portion 104a receive the steel wire winder (not shown). As a result, the steel wire winder is aligned with respect to the first reel 28A.

[0142] like Figure 7 As shown, the first information portion 106 is arranged in the first internal space 116. The first information portion 106 is arranged on the radial inner side of the layer of the steel wire W wound on the main body 110 of the main body. The first information portion 106 has a first protrusion 122. The first protrusion 122 protrudes from the separator 112 to the right. In the left-right direction, the top end of the first protrusion 122 is arranged at a position closer to the separator 112 side than the receiving portion 115b. Thereby, it is possible to suppress the first protrusion 122 from abutting against the protrusion 115a when a plurality of first reels 30A are stacked. The first protrusion 122 is arranged 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 protrusion length 124 along the central axis AX1.

[0143] like Fig. 9 As shown, the second reel 30B includes a wire W and a second reel 28B. The second reel 28B includes a main body 100, a left flange 102, and a right flange 104. In addition, the second reel 28B includes a second information portion 128 instead of the first information portion 106 of the first reel 28A.

[0144] The second information portion 128 is arranged in the first internal space 116. The second information portion 128 is arranged radially inward of the layer of the steel wire W wound on the main body 110. The second information portion 128 has a second protrusion 130. The connection position of the second protrusion 130 with respect to the separator 112 is the same as the connection position of the first protrusion 122 with respect to the separator 112. In addition, the direction in which the second protrusion 130 extends is the same as the direction in which the first protrusion 122 extends. In the left-right direction, the tip of the second protrusion 130 is arranged at a position closer to the separator 112 side than the receiving portion 115b. Thus, it is possible to suppress the second protrusion 130 from abutting against the protrusion 115a when a plurality of 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 protrusion length 132 is longer than the first protrusion length 124.

[0145] like Fig.10 As shown, the third reel 30C includes a wire W and a third reel 28C. The third reel 28C includes a main body 100, a left flange 102, and a right flange 104. The third reel 28C includes a third information portion 136 instead of the first information portion 106 of the first reel 28A.

[0146] The third information portion 136 is arranged in the first internal space 116. The third information portion 136 is arranged radially inward of the layer of the steel wire W wound on the main body 110. The third information portion 136 has a third protrusion 138. The connection position of the third protrusion 138 relative to the separator 112 is the same as the connection position of the first protrusion 122 relative to the separator 112. In addition, the direction in which the third protrusion 138 extends is the same as the direction in which the first protrusion 122 extends. In the left-right direction, the top end of the third protrusion 138 is arranged at a position closer to the separator 112 side than the receiving portion 115b. Thus, it is possible to suppress the third protrusion 138 from abutting against the protrusion 115a when a plurality of 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 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. In addition, 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.

[0147] like Fig.11As shown, the reinforcing bar tying 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 mounting unit 36. The detection unit 150 includes a movable member 152, a biasing member 154, and a detector 156.

[0148] 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 arranged inside the insertion cylinder 42. The base 160 has a substantially cylindrical shape. Fig.12 As shown, the base 160 has two guide ribs 160a extending in the left-right direction. In addition, the base 34 has two rib receiving parts 34a extending in the left-right direction, and the guide ribs 160a are received by the rib receiving parts 34a in a manner that allows sliding in the left-right direction. Thus, the base 160 is supported on the base 34 in a manner that allows movement in the left-right direction. Fig.11 As shown, the base 160 has a retaining groove 160b recessed from the right end of the base 160, and the base 34 of the reel storage portion 22 has a retaining protrusion 34b protruding in the left direction. The retaining protrusion 34b is inserted into the force-applying member 154, and the force-applying member 154 is inserted into the retaining groove 160b. The force-applying member 154 is sandwiched between the base 34 of the reel storage portion 22 and the base 160 of the movable member 152. As a result, the base 160 is forced in the left direction by the force-applying member 154. The movable member 152 is located in the initial position in a state where no force in the right direction is applied. When the movable member 152 is located in the initial position, the base 160 abuts against the bottom wall portion 46 in the left-right direction.

[0149] The operated portion 162 is made of a metal material, such as iron. The hardness of the operated portion 162 is higher than that of the reel 28. The operated portion 162 is fixed to the left end of the base 160. The operated portion 162 has a substantially cylindrical shape. The bottom wall portion 46 of the insertion cylinder 42 has a through hole 46a that penetrates the bottom wall portion 46 in the left-right direction. When the movable member 152 is located at the initial position, the operated portion 162 is arranged in the through hole 46a. The operated portion 162 and the through hole 46a are arranged on the central axis AX1.

[0150] The detector 156 is disposed inside the insertion tube 42. The detector 156 includes a magnet 166, a substrate 168, and a plurality of magnetic sensors 170 (three in this embodiment).

[0151] The magnet 166 is fixed to the 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.

[0152] The substrate 168 is fixed to the insertion tube 42. The substrate 168 is arranged on the rear side of the movable member 152. The substrate 168 is arranged along a plane including the left-right direction and the up-down direction. The substrate 168 includes an opposing surface 168a and a non-opposing surface 168b on the opposite side of the opposing surface 168a. The opposing surface 168a is opposite to the movable member 152 in the front-back direction. The wiring 169a (see Figure 2 ) is fixed to the non-opposite surface 168b by means of adhesive 169b. Figure 2 As shown, the wiring 169a extends to the control unit 68 through the connection portion 23 between the battery mounting portion 18 and the roll storage portion 22. Fig.11 ) is electrically connected to the control unit 68 via wiring 169a.

[0153] like Fig.11 As shown, three magnetic sensors 170 are fixed to the opposing surface 168a. The three magnetic sensors 170 are arranged in a row in the left-right direction. When each magnetic sensor 170 faces the magnet 166 in the front-back direction, the magnet 166 is detected. The signal detected by each magnetic sensor 170 is always sent to the control unit 68 (refer to Figure 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 .

[0154] 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 on the right side of the first magnetic sensor 170a. The third magnetic sensor 170c is disposed on the right side of the second magnetic sensor 170b. When the movable member 152 is located at the initial position, the magnet 166 is disposed at a position 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 are not opposite to the magnet 166 in the front-to-back 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 substantially the same as the first protrusion length 124 of the first protrusion 122. When the movable member 152 is in the initial position, the distance between the second magnetic sensor 170b and the magnet 166 in the left-right direction is substantially the same as the second protrusion length 132 of the second protrusion 130. When the movable member 152 is in the initial position, the distance between the third magnetic sensor 170c and the magnet 166 in the left-right direction is substantially the same as the third protrusion length 140 of the third protrusion 138.

[0155] like Fig.13As shown, when the first reel 30A is installed on the right reel installation unit 36, the insertion cylinder 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 cylinder 42 and presses the operated portion 162 in the right direction toward the inside of the insertion cylinder 42. The movable member 152 moves in the right direction on the central axis AX1 and stops at a position where the magnet 166 and the first magnetic sensor 170a are opposite to each other in the front-to-back direction. Therefore, the first magnetic sensor 170a detects the magnet 166. The magnet detection signal of the first magnetic sensor 170a detecting the magnet 166 is sent to the control unit 68 (refer to Figure 2 ), thereby, the control unit 68 detects that the first reel 30A has been installed in the right reel installation unit 36. At this time, the magnet non-detection signal that the second magnetic sensor 170b does not detect the magnet 166 and the magnet non-detection signal 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 42 is inserted into the first internal space 116, the detection unit 150 is arranged in the first internal space 116.

[0156] like Fig.14 As shown, when the second reel 30B is installed on the right reel installation unit 36, the insertion cylinder 42 is inserted into the first internal space 116 of the second reel 30B. As a result, the second protrusion 130 passes through the through hole 46a of the insertion cylinder 42, and presses the operated portion 162 in the right direction toward the inside of the insertion cylinder 42. The movable member 152 moves in the right direction on the central axis AX1 and stops at a position where the magnet 166 and the second magnetic sensor 170b are relative to each other in the front-to-back direction. Therefore, the second magnetic sensor 170b detects the magnet 166. The magnet detection signal of the second magnetic sensor 170b detecting the magnet 166 is sent to the control unit 68 (refer to Figure 2 ), thereby, the control unit 68 detects that the second reel 30B has been installed on the right reel installation unit 36. At this time, the magnet non-detection signal that the first magnetic sensor 170a does not detect the magnet 166 and the magnet non-detection signal that the third magnetic sensor 170c does not detect the magnet 166 are continuously sent to the control unit 68.

[0157] like Fig.15As shown, when the third reel 30C is installed on the right reel installation unit 36, the insertion cylinder 42 is inserted into the first internal space 116 of the third reel 30C. As a result, the third protrusion 138 passes through the through hole 46a of the insertion cylinder 42, and presses the operated portion 162 in the right direction toward the inside of the insertion cylinder 42. The movable member 152 moves in the right direction on the central axis AX1 and stops at a position where the magnet 166 and the third magnetic sensor 170c are relative to each other in the front-to-back direction. Therefore, the third magnetic sensor 170c detects the magnet 166. The magnet detection signal of the third magnetic sensor 170c detecting the magnet 166 is sent to the control unit 68 (refer to Figure 2 ), the control unit 68 detects that the third reel 30C is installed in the right reel installation unit 36. At this time, the magnet non-detection signal that the first magnetic sensor 170a does not detect the magnet 166 and the magnet non-detection signal that the second magnetic sensor 170b does not detect the magnet 166 are continuously sent to the control unit 68.

[0158] When the steel bar binding machine 2 is switched from the closed state to the open state, the control unit 68 executes Fig.16 Processing shown.

[0159] exist Fig.16 In S2, the control unit 68 determines whether a magnet detection signal is received from the detector 156. The control unit 68 receives signals (i.e., magnet detection signals or magnet non-detection signals) from the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c, respectively. When the control unit 68 does not receive a magnet detection signal from the detector 156, that is, when the signals received from the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c, respectively, are magnet non-detection signals ("No" in S2), the control unit 68 enters 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 enters S6.

[0160] In S4, the control unit 68 reports error information. For example, the control unit 68 causes the display unit 52 to display first error information indicating that the reel 30 is not mounted.

[0161] In S6, the control unit 68 controls the feed motor 72 to perform an initialization process for adjusting the position of the top end of the steel wire W. Specifically, the control unit 68 operates the feed motor 72 at a predetermined speed to rotate the feed roller unit 74 in the forward direction, thereby pulling the steel wire W from the reel 28. Next, the control unit 68 operates the twisting motor 84 to move the sleeve unit 86 backward, thereby operating the cutting unit 64 using the sleeve unit 86. As a result, the steel wire W is cut. Next, the control unit 68 operates the twisting motor 84 to reset the sleeve unit 86 to the initial position. Next, the control unit 68 operates the feed motor 72 at a predetermined speed to rotate the feed roller unit 74 in the reverse direction, thereby pulling the steel wire W back toward the reel 28.

[0162] In S8, the control unit 68 determines whether the signal received from the detector 156, that is, the signal received from the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c, respectively, changes from the magnet detection signal to the magnet non-detection signal. The control unit 68 enters S10 when the signal received from the detector 156 changes from the magnet detection signal to the magnet non-detection signal, that is, when one of the signals received from the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c, respectively, changes from the magnet detection signal to the magnet non-detection signal ("No" in S8). On the other hand, the control unit 68 enters S12 when the signal received from the detector 156 has not changed from a magnet detection signal to a magnet non-detection signal, that is, when the signals received from the first magnetic sensor 170a, the second magnetic sensor 170b and the third magnetic sensor 170c have not all changed from a magnet detection signal to a magnet non-detection signal ("Yes" in S8).

[0163] In S10 , the control unit 68 reports error information. For example, the control unit 68 causes the display unit 52 to display second error information indicating that the reel 30 has been unloaded.

[0164] In S12, the control unit 68 determines whether the trigger 24 has been pulled in. When the trigger 24 has been pulled in ("Yes" in S12), the control unit 68 proceeds to S14. On the other hand, when the trigger 24 has not been pulled in ("No" in S12), the control unit 68 returns to S8.

[0165] In S14, the control unit 68 controls the feed motor 72 and the twisting motor 84 to perform a bundling process of bundling the reinforcing bars R with the steel wire W. Specifically, first, the control unit 68 controls the detector 156 to detect the type of the reel 30 based on the signal received from the detector 156. Next, the control unit 68 sets the conditions of the bundling process, such as the number of rotations of the feed motor 72, the upper limit value of the torque of the feed motor 72, and the upper limit value 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 steel wire W is fed out and wound around the reinforcing bars R. Next, the control unit 68 operates the twisting motor 84 to move the sleeve unit 86 in the forward direction. As a result, the tip of the steel 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 steel wire W is pulled back, and the steel wire W is reduced in diameter and contacts the reinforcing bar R. Next, the control unit 68 operates the twisting motor 84 to move the sleeve unit 86 in the forward direction. As a result, the steel wire W is held by the holding fixture 88 between the upper curling guide 78 and the cutting unit 64. Next, the control unit 68 operates the twisting motor 84 to move the sleeve unit 86 further in the forward direction. By operating the cutting unit 64 by the twisting unit 66, the steel 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. By rotating the holding fixture 88, the steel wire W is twisted. Finally, the control unit 68 operates the twisting motor 84 to release the wire W from the holding clamp 88 and return the twisting unit 66 to the initial position.

[0166] In S16, the control unit 68 determines whether the reinforcing bar binding machine 2 is in the closed state. When the reinforcing bar binding machine 2 is not in the closed state ("No" in S16), the control unit 68 returns to S8. On the other hand, when the reinforcing bar binding machine 2 is in the closed state ("Yes" in S16), the control unit 68 causes the reinforcing bar binding machine 2 to be closed. Fig.16 The shown processing ends.

[0167] Alternatively, when the steel bar binding machine 2 is switched from the closed state to the open state, the Fig.16 The control unit 68 performs the processing Fig.35 Processing shown.

[0168] In S22, the control unit 68 executes a type determination process (see Fig.36 ). Below, refer to Fig.36 The type determination process will be described below.

[0169] In S42, the control unit 68 obtains 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.

[0170] In S44, the control unit 68 determines whether the signal obtained in S42 belongs to the first signal image. In the present embodiment, the first signal image is a signal image 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. In the case where the signal belongs to the first signal image (the case of "yes"), the processing enters S46. In S46, the control unit 68 determines that the first reel 30A has been installed. After S46, the processing enters S56. In S44, in the case where the signal does not belong to the first signal image (the case of "no"), the processing enters S48.

[0171] In S48, the control unit 68 determines whether the signal obtained in S42 belongs to the second signal image. In the present embodiment, the second signal image is a signal image 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. In the case where the signal belongs to the second signal image (the case of "yes"), the processing enters S50. In S50, the control unit 68 determines that the second reel 30B has been installed. After S50, the processing enters S56. In S48, in the case where the signal does not belong to the second signal image (the case of "no"), the processing enters S52.

[0172] In S52, the control unit 68 determines whether the signal obtained in S42 belongs to the third signal image. In the present embodiment, the third signal image is a signal image 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. In the case where the signal belongs to the third signal image (the case of "yes"), the processing enters S54. In S54, the control unit 68 determines that the third reel 30C has been installed. After S54, the processing enters S56. In S52, in the case where the signal does not belong to the third signal image (the case of "no"), the processing enters S58.

[0173] In S56, the control unit 68 sets the conditions for the bundling process, such as the number of rotations of the feed motor 72, the upper limit value of the torque of the feed motor 72, the upper limit value of the torque of the twisting motor 84, etc., as control parameters of the reinforcing bar bundling machine 2 based on the type of the reel 30 determined in S46, S50 or S54. After S56, Fig.36 The type determination process is completed.

[0174] 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 magnet non-detection signals, the control unit 68 determines that a no-reel error has occurred. A no-reel error is an error when the reel 30 is not installed. In addition, when two or more of the first magnetic sensor 170a, the second magnetic sensor 170b, and the third magnetic sensor 170c output magnet detection signals, the control unit 68 determines that a detection abnormality error has occurred. A detection abnormality error is an error when some abnormality occurs in the detector 156. After S58, Fig.36 The type determination process is completed.

[0175] like Fig.35 As shown, the type determination process is performed in S22 (refer to Fig.36 ), the process enters S24. In S24, the control unit 68 determines whether an error has occurred in the type determination process of S22. When it is determined that an error has occurred ("yes"), the process enters S26. In S26, the control unit 68 reports error information. For example, when a no-roll error has occurred in the type determination process of S22, the control unit 68 causes the display unit 52 to display the first error message indicating that the roll 30 is not installed. Alternatively, when a detection abnormality error has occurred in the type determination process of S22, the control unit 68 causes the display unit 52 to display the third error message indicating that an abnormality has occurred in the detector 156. After S26, Fig.35 The shown processing ends.

[0176] If it is determined in S24 that no error has occurred ("No"), the process proceeds to S28. In S28, the control unit 68 executes the same Fig.16 After S28, the process proceeds to S30.

[0177] In S30, the control unit 68 determines whether the reinforcing bar binding machine 2 is in the closed state. When the reinforcing bar binding machine 2 is in the closed state (in the case of "yes"), Fig.35 The processing shown ends. If the reinforcing bar binding machine 2 remains in the on state (in the case of "No"), the processing proceeds to S32.

[0178] In S32, the control unit 68 executes the same type determination process as in S22 again (see Fig.36 ).

[0179] In S34, the control unit 68 determines whether an error has occurred in the type determination process of S32. When it is determined that an error has occurred ("yes"), the process enters S36. In S36, the control unit 68 reports error information. For example, when a no-roll error has occurred in the type determination process of S32, the control unit 68 causes the display unit 52 to display a second error message indicating that the roll 30 has been removed. Alternatively, when a detection abnormality error has occurred in the type determination process of S32, the control unit 68 causes the display unit 52 to display a third error message indicating that an abnormality has occurred in the detector 156. After S36, Fig.35 The shown processing ends.

[0180] If it is determined in S34 that no error has occurred ("No"), the process proceeds to S38. In S38, the control unit 68 determines whether the trigger 24 has been pulled in. If the trigger 24 has not been pulled in ("No"), the process returns to S30. If the trigger 24 has been pulled in ("Yes"), the process proceeds to S40.

[0181] In S40, the control unit 68 performs the control based on the control parameters set in the type determination process of S32 (see Fig.36 S56) to execute Fig.16 The same bundling process as in S14 is performed. After S40, the process returns to S30.

[0182] In addition, if Fig.37 As shown, after it is determined in S38 that the trigger 24 has been pulled in (after the result is YES) and before the bundling process is executed in S40, the type determination process in S32 and the process of determining whether an error has occurred in S34 may be executed.

[0183] (Effect)

[0184] The reinforcing bar tying machine 2 of this embodiment includes: a reel 30 having a reel 28 and a steel wire W wound around the reel 28; a right reel mounting unit 36 ​​(an example of a reel mounting unit) to which the reel 30 is mounted; a feeding unit 60 to feed the steel wire W wound around the reel 28; a guide unit 62 to guide the steel wire W around the reinforcing bar R; a twisting unit 66 to twist the steel wire W around the reinforcing bar R; and a detection unit 150 to detect the type of the reel 30. The reel 28 includes: a main body 100 to which the steel wire W is wound and which has a first internal space 116 into which the right reel mounting unit 36 ​​is inserted; and information units 106, 128, 136 to store type information indicating the type of the reel 30. When the reel 30 is mounted on the right reel mounting unit 36, the detection unit 150 is arranged in the first internal space 116.

[0185] According to the above configuration, when the reel 30 is mounted on the right reel mounting unit 36, the detection unit 150 is disposed in the first internal space 116 of the reel 30. Therefore, compared with 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 mounted on the right reel mounting unit 36, it is possible to suppress the rebar tying machine 2 from being enlarged.

[0186] The information parts 106, 128, 136 include protrusions 122, 130, 138 protruding from the main body 100. The protrusions 122, 130, 138 have different protrusion lengths 124, 132, 140 depending on the type of the reel 30. The protrusion lengths 124, 132, 140 are type information.

[0187] According to the above configuration, the protrusion lengths 124, 132, 140 of the protrusions 122, 130, 138 differ depending on the type of the reel 30. By a simple configuration of changing the protrusion lengths 124, 132, 140, the type of the reel 30 can be distinguished while suppressing an increase in the number of protrusions 122, 130, 138. Thus, the structure of the reel 30 can be suppressed from becoming complicated.

[0188] In addition, the protrusions 122 , 130 , and 138 are arranged in the first internal space 116 .

[0189] According to the above configuration, compared with a configuration in which the projections 122 , 130 , 138 are not arranged in the first internal space 116 , it is possible to suppress an increase in the size of the spool 30 .

[0190] The main body 100 includes a main body 110 having a cylindrical shape and an internal space 114, and a partition 112 that divides the internal space 114 of the 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 112.

[0191] 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 .

[0192] Alternatively, the reel 30 rotates around the central axis AX1 when mounted on the right reel mounting unit 36. The protrusions 122, 130, 138 are arranged on the central axis AX1 and extend along the central axis AX1.

[0193] According to the above configuration, it is possible to suppress changes in the positions of the protrusions 122 , 130 , and 138 relative to the central axis AX1 when the spool 30 rotates.

[0194] In addition, the detection unit 150 includes: a movable component 152, which is configured at an initial position when the right reel mounting unit 36 ​​is not inserted into the first internal space 116, and when the right reel mounting unit 36 ​​is inserted into the first internal space 116, the movable component 152 is pressed by the protrusions 122, 130, and 138 to move from the initial position; and a detector 156, which detects the position of the movable component 152.

[0195] According to the above configuration, when the reel 30 is mounted on the right reel mounting unit 36, the position of the movable member 152 relative to the initial position varies depending on the type of the reel 30. The type of the reel 30 can be detected by a simple configuration in which the detector 156 detects the position of the movable member 152.

[0196] In addition, the right reel mounting unit 36 ​​includes an insertion tube 42 that can be inserted into the first internal space 116. The detector 156 is arranged inside the insertion tube 42.

[0197] According to the above configuration, it is possible to prevent the detector 156 from coming into contact with the reel 30 and being damaged.

[0198] In addition, the insertion tube 42 includes a bottom wall 46 (an example of a wall) facing the reel 30 when inserted into the first internal space 116, and a through hole 46a penetrating the bottom wall 46. When the insertion tube 42 is inserted into the first internal space 116, the projections 122, 130, 138 penetrate the through hole 46a and press the movable member 152 toward the inside of the insertion tube 42.

[0199] According to the above configuration, when the reel 30 is mounted on the right reel mounting unit 36, the movable member 152 is arranged inside the insertion tube 42. Thus, the position of the movable member 152 can be easily detected by the detector 156.

[0200] In addition, the detection unit 150 further includes an urging member 154 for urging the movable member 152 toward the initial position.

[0201] According to the above structure, when the reel 30 is removed from the right reel mounting unit 36 ​​, the movable member 152 can be easily returned to the initial position.

[0202] Additionally, the reel 28 is rotatable about the right reel mounting unit 36 ​​.

[0203] In the structure in which the reel 28 rotates together with the right reel mounting unit 36, a structure for rotating the right reel mounting unit 36 ​​is required. As a result, the structure of the reinforcing bar tying machine 2 becomes complicated. According to the above structure, it is possible to suppress the structure of the reinforcing bar tying machine 2 from becoming complicated compared with the structure in which the reel 28 rotates together with the right reel mounting unit 36.

[0204] In addition, the hardness of the right reel mounting unit 36 ​​is higher than the hardness of the reel 28 .

[0205] According to the above-mentioned structure, it is possible to suppress the wear of the right reel mounting unit 36 ​​.

[0206] The detection unit 150 also includes an operated portion 162 (an example of a contact portion) that contacts the spool 28 when the spool 30 is mounted on the right spool mounting unit 36. The operated portion 162 has a higher hardness than the spool 28.

[0207] According to the above configuration, wear of the operated portion 162 can be suppressed.

[0208] The reinforcing bar 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 of binding the reinforcing bars R using the steel wire W. The control unit 68 detects the type of the drum 30 using the detection unit 150 during the binding process.

[0209] According to the above configuration, the feed unit 60 and the twisting unit 66 can be controlled based on the type of the drum 30 detected during the bundling process. This can prevent the reinforcing bars R from being poorly bundled.

[0210] The reinforcing bar tying machine 2 of the present embodiment includes: a drum 30 having a reel 28 and a steel wire W wound around the reel 28; a right reel mounting unit 36 ​​(an example of a reel mounting unit) on which the reel 30 is mounted; a feeding unit 60 that feeds the steel wire W wound around the reel 28; a guide unit 62 that guides the steel wire W around the reinforcing bar R; a twisting unit 66 that twists the steel wire W around the reinforcing bar R; and a detection unit 150 that detects the type of the reel 30. The reel 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.

[0211] According to the above configuration, the protrusion lengths 124, 132, 140 of the protrusions 122, 130, 138 differ depending on the type of the reel 30. By a simple configuration of changing the protrusion lengths 124, 132, 140, the type of the reel 30 can be distinguished while suppressing an increase in the number of protrusions 122, 130, 138. Thus, the structure of the reel 30 can be suppressed from becoming complicated.

[0212] The steel bar tying machine 2 of this embodiment includes: a right drum mounting unit 36 ​​(drum mounting unit), which can selectively mount a first drum 30A and a second drum 30B, wherein the first drum 30A includes a first protrusion 122 having a first protrusion length 124 and a steel wire W, and the second drum 30B includes a second protrusion 130 having a second protrusion length 132 and a steel wire W; a feeding unit 60, which feeds the steel wire W; a guiding unit 62, which guides the steel wire W to the periphery of the steel bar R; a twisting unit 66, which twists the steel wire W around the steel bar R; and a detection unit 150, which can detect the first protrusion 122 or the second protrusion 130.

[0213] According to the above configuration, the protrusion lengths 124 and 132 of the protrusions 122 and 130 differ according to the type of the reel 30. By simply changing the protrusion lengths 124 and 132, the type of the reel 30 can be distinguished while suppressing an increase in the number of protrusions 122 and 130. Thus, the structure of the reel 30 can be suppressed from becoming complicated.

[0214] The reel 30 of this embodiment is used in the reinforcing bar tying machine 2. The reel 30 includes a reel 28 and a steel wire W wound around the reel 28. The reinforcing bar tying machine 2 includes: a right reel mounting unit 36 ​​(an example of a reel mounting unit) on which the reel 30 is mounted; a feeding unit 60 that feeds the steel wire W wound around the reel 28; a guide unit 62 that guides the steel wire W around the reinforcing bar R; a twisting unit 66 that twists the steel wire W around the reinforcing bar R; and a detection unit 150 that detects the type of the reel 30. The reel 28 comprises: information parts 106, 128, 136, which retain type information indicating the type of the reel 30; and a main body 100, which is wound with a steel wire W and has a first internal space 116, and the first internal space 116 is for inserting the right reel mounting unit 36 ​​and the detection unit 150 is arranged in the first internal space 116 when the right reel mounting unit 36 ​​is inserted.

[0215] According to the above configuration, when the reel 30 is mounted on the right reel mounting unit 36, the detection unit 150 is disposed in the first internal space 116 of the reel 30. Therefore, compared with 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 mounted on the right reel mounting unit 36, it is possible to suppress the rebar tying machine 2 from being enlarged.

[0216] In addition, the information units 106 , 128 , and 136 are arranged in the first internal space 116 .

[0217] According to the above configuration, it is possible to suppress an increase in size of the reel 30 .

[0218] The reel 30 of this embodiment is used in the reinforcing bar binding machine 2. The reel 30 includes a reel 28 and a steel wire W wound around the reel 28. The reinforcing bar binding machine 2 includes: a right reel mounting unit 36 ​​(an example of a reel mounting unit) on which the reel 30 is mounted; a feeding unit 60 that feeds the steel wire W wound around the reel 28; a guide unit 62 that guides the steel wire W around the reinforcing bar R; a twisting unit 66 that twists the steel wire W around the reinforcing bar R; and a detection unit 150 that detects the type of the reel 30. The reel 28 includes protrusions 122, 130, 138, and the protrusions 122, 130, 138 have protrusion lengths 124, 132, 140 that differ depending on the type of the reel 30, and the type of the reel 30 is detected by the detection unit 150 based on the protrusion lengths 124, 132, 140.

[0219] According to the above configuration, the protrusion lengths 124, 132, 140 of the protrusions 122, 130, 138 differ depending on the type of the reel 30. By a simple configuration of changing the protrusion lengths 124, 132, 140, the type of the reel 30 can be distinguished while suppressing an increase in the number of protrusions 122, 130, 138. Thus, the structure of the reel 30 can be suppressed from becoming complicated.

[0220] The drum 30 of this embodiment is used in the reinforcing bar tying machine 2. The drum 30 includes a reel 28 and a wire W wound around the reel 28. The reel 28 includes protrusions 122, 130, 138, and the protrusions 122, 130, 138 have different protrusion lengths 124, 132, 140 depending on the type of the drum 30.

[0221] According to the above configuration, the protrusion lengths 124, 132, 140 of the protrusions 122, 130, 138 differ depending on the type of the reel 30. By a simple configuration of changing the protrusion lengths 124, 132, 140, the type of the reel 30 can be distinguished while suppressing an increase in the number of protrusions 122, 130, 138. Thus, the structure of the reel 30 can be suppressed from becoming complicated.

[0222] The reinforcing bar binding machine 2 of the present embodiment includes: a drum 30 having a reel 28 and a steel wire W wound around the reel 28; a right reel mounting unit 36 ​​(an example of a reel mounting unit) on which the reel 30 is mounted; a feeding unit 60 that feeds the steel wire W wound around the reel 28; a guide unit 62 that guides the steel wire W around the reinforcing bar R; a twisting unit 66 that twists the steel wire W around the reinforcing bar R; and a detection unit 150 that detects the type of the drum 30; a main power switch 50 that switches the on state and the off state of the reinforcing bar binding machine 2; a display unit 52 (an example of a reporting unit) that reports error information; and a control unit 68 that controls the feeding unit 60, the twisting unit 66, and the display unit 52, and receives a signal related to the type of the drum 30 from the detection unit 150. When the signal received from the detection unit 150 changes while the reinforcing bar binding machine 2 is in the on state, the control unit 68 controls the display unit 52 .

[0223] According to the above configuration, when the signal received from the detection unit 150 changes when the reinforcing bar tying machine 2 is in the on state, for example, when the reel 30 is removed from the right reel mounting unit 36 ​​when the reinforcing bar tying machine 2 is in the on state, the display unit 52 reports an error message. Thus, the user can recognize the error message. Therefore, it is possible to prevent the user from reinstalling the reel 30 to the right reel mounting unit 36 ​​and tying the reinforcing bars R using the reinforcing bar tying machine 2 without arranging the top end of the steel wire W at the correct position.

[0224] The reinforcing bar tying machine 2 of the present embodiment includes a right drum mounting unit 36 ​​(an example of a drum mounting unit) for mounting a drum 30, wherein the drum 30 has a reel 28 and a steel wire W wound around the reel 28; a detection unit 150, which detects the type of the reel 30; a main power switch 50, which switches the on state and the off state of the reinforcing bar tying machine 2; a control unit 68 (an example of a signal receiving unit), which receives a signal related to the type of the reel 30 from the detection unit 150; and a display unit 52 (an example of a reporting unit), which reports an error message when the signal received by the control unit 68 changes when the reinforcing bar tying machine 2 is in the on state.

[0225] According to the above configuration, by the user recognizing the erroneous information, it is possible to prevent the user from tying the reinforcing steel bars R using the reinforcing steel bar tying machine 2 .

[0226] The reinforcing bar tying machine 2 of the present embodiment includes: a drum 30 having a reel 28 and a steel wire W wound around the reel 28; a right reel mounting unit 36 ​​(an example of a reel mounting unit) on which the drum 30 is mounted; a feeding unit 60 that feeds the steel wire W wound around the reel 28; a guide unit 62 that guides the steel wire W around the reinforcing bar R; a twisting unit 66 that twists the steel wire W around the reinforcing bar R; a detection unit 150 that detects the type of the drum 30; and a control unit 68 that controls the feeding unit 60 and the twisting unit 66 to perform a bundling process of bundling the reinforcing bars R using the steel wire W. When the reinforcing bar tying machine 2 is switched from the closed state to the open state, the control unit 68 detects the type of the drum 30 using the detection unit 150.

[0227] According to the above configuration, the type of the drum 30 can be detected at a time point after the reinforcing bar tying machine 2 is switched from the closed state to the open state and before the tying process is performed.

[0228] The reinforcing bar tying machine 2 of the present embodiment includes: a drum 30 having a reel 28 and a steel wire W wound around the reel 28; a right reel mounting unit 36 ​​(an example of a reel mounting unit) on which the drum 30 is mounted; a feeding unit 60 that feeds the steel wire W wound around the reel 28; a guide unit 62 that guides the steel wire W around the reinforcing bar R; a twisting unit 66 that twists the steel wire W around the reinforcing bar R; and a detection unit 150 that detects the type of the drum 30; a trigger 24 (an example of an operating member); and a control unit 68 that controls the feeding unit 60 and the twisting unit 66 to perform a tying process of tying the reinforcing bars R using the steel wire W when the trigger 24 is operated. When the reinforcing bar tying machine 2 is in the on state, after the trigger 24 is operated and before the tying process is performed, the control unit 68 detects the type of the drum 30 using the detection unit 150.

[0229] According to the above configuration, the type of the reel 30 can be detected at a point in time after the trigger 24 is operated and before the bundling process is performed.

[0230] The reinforcing bar tying machine 2 of the present embodiment includes: a drum 30 having a reel 28 and a steel wire W wound around the reel 28; a right reel mounting unit 36 ​​(an example of a reel mounting unit) on which the drum 30 is mounted; a feeding unit 60 that feeds the steel wire W wound around the reel 28; a guide unit 62 that guides the steel wire W around the reinforcing bar R; a twisting unit 66 that twists the steel wire W around the reinforcing bar R; and a detection unit 150 that detects the type of the drum 30; a trigger 24 (an example of an operating member); and a control unit 68 that controls the feeding unit 60 and the twisting unit 66 to perform a tying process of tying the reinforcing bars R using the steel wire W when the trigger 24 is operated. When the reinforcing bar tying machine 2 is in the on state, after the tying process is performed and before the trigger 24 is next operated, the control unit 68 detects the type of the drum 30 using the detection unit 150.

[0231] According to the above configuration, the type of the reel 30 can be detected at a point in time after the bundling process is performed and before the trigger 24 is subsequently operated to perform the bundling process again.

[0232] (Second embodiment)

[0233] In the second embodiment, the differences from the first embodiment are described. Fig.17 As shown, the first information portion 106 of the first reel 30A is provided with a first rib 222 instead of the first protrusion 122. The first rib 222 protrudes rightward from the partition 112. The first rib 222 has a substantially annular shape. Fig.18 As shown, the center of the ring of the first rib 222 is arranged on the central axis AX1. In the left-right direction, the top end of the first rib 222 is arranged at a position closer to the separator 112 than the receiving portion 115b. Thus, it is possible to suppress the first rib 222 from abutting against the protrusion 115a when a plurality of first reels 30A are stacked. The first rib 222 has a first protrusion length 224 along the central axis AX1.

[0234] like Fig.19 As shown, the second information portion 128 of the second reel 30B includes a first rib 222 and a second rib 230 instead of the second protrusion 130. The structure of the first rib 222 of the second reel 30B is the same as the structure of the first rib 222 of the first reel 30A.

[0235] The second rib 230 protrudes from the separator 112 in the right direction. The second rib 230 has a substantially circular ring shape. The center of the circular ring of the second rib 230 is arranged 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 top end of the second rib 230 is arranged at a position closer to the separator 112 side than the receiving portion 115b. Thereby, it is possible to suppress the second rib 230 from abutting against the protrusion 115a when a plurality of second reels 30B are stacked. The second rib 230 has a second protrusion length 232 along the central axis AX1. The second protrusion length 232 is longer than the first protrusion length 224.

[0236] like Fig. 20 As shown, the third information portion 136 of the third reel 30C includes the second rib 230 instead of the third protrusion 138. The structure of the second rib 230 of the third reel 30C is the same as the structure of the second rib 230 of the second reel 30B. The combination of the first rib 222 and the second rib 230 is the type information indicating the type of the reel 30. The reel 30 including the first rib 222 and not including the second rib 230 is the type information indicating the type of the first reel 30A. In addition, the reel 30 including the first rib 222 and the second rib 230 is the type information indicating the type of the second reel 30B. The reel 30 not including the first rib 222 and including the second rib 230 is the type information indicating the type of the third reel 30C.

[0237] like Fig.21 As shown, the insertion cylinder 42 includes a large diameter cylinder 244, a connecting cylinder 246, a small diameter cylinder 248, and a bottom wall 250. The large diameter cylinder 244 has a cylindrical shape extending in the left-right direction. One end of the large diameter cylinder 244 is connected to the base 34 (see Figure 5 The large diameter cylinder portion 244 has a through hole 244a. The through hole 244a passes through the side wall of the large diameter cylinder portion 244.

[0238] The connecting cylinder 246 has a truncated cone shape extending in the left-right direction. One end of the connecting cylinder 246 is connected to the other end of the large-diameter cylinder 244 .

[0239] The small diameter cylinder 248 has a cylindrical shape extending in the left-right direction. The diameter of the outer peripheral surface of the small diameter cylinder 248 is smaller than the diameter of the outer peripheral surface of the large diameter cylinder 244. The small diameter cylinder 248 is connected to the other end of the connecting cylinder 246. The small diameter cylinder 248 has a through hole 248a. The through hole 248a penetrates the side wall of the small diameter cylinder 248.

[0240] The bottom wall portion 250 is connected to the other end of the small-diameter cylinder portion 248. The bottom wall portion 250 closes the opening of the other end of the small-diameter cylinder portion 248.

[0241] The insertion tube portion 42 is inserted into the reel 30 (see Fig. 22), the detection unit 150 is disposed in the first internal space 116 (refer to Fig. 22 ). The detection unit 150 includes a first movable member 270 , a first urging member 272 , a second movable member 274 , a second urging member 276 , and a detector 278 .

[0242] The first movable member 270 includes a first base 282 and a first operated portion 284. The first base 282 is disposed inside the small-diameter cylinder 248. The first base 282 is supported on the small-diameter cylinder 248 in a manner that allows it to move in the front-rear direction. One end of the first base 282 abuts against the first force-applying member 272. The first base 282 is forced in the rearward direction by the first force-applying member 272. The first movable member 270 is located in an initial position when no force in the front direction is applied. A first step portion 285 is formed between the other end of the first base 282 and the first operated portion 284, and when the first movable member 270 is located in the initial position, the first step portion 285 abuts against the small-diameter cylinder 248 in the front-rear direction.

[0243] One end of the first operated portion 284 is connected to the other end of the first base portion 282. When the first movable member 270 is located at the initial position, the first operated portion 284 passes through the through hole 248a. 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 arranged outside the small-diameter cylinder portion 248. The first inclined surface 286 is inclined in a manner away from the central axis AX1 as it moves from the left end toward the right end.

[0244] The second movable member 274 includes a second base 290 and a second operated portion 292. The second base 290 is arranged inside the large diameter cylinder 244. The second base 290 is supported on the large diameter cylinder 244 in a manner that it can move in the front-rear direction. One end of the second base 290 abuts against the second force member 276. The second base 290 is forced in the rear direction by the second force member 276. The second movable member 274 is located in an initial position when no force in the front direction is applied. A second step portion 293 is formed between the other end of the second base 290 and the second operated portion 292, and when the second movable member 274 is located in the initial position, the second step portion 293 abuts against the large diameter cylinder 244 in the front-rear direction.

[0245] One end of the second operated portion 292 is connected to the other end of the second base portion 290. When the second movable member 274 is located at the initial position, the second operated portion 292 passes through the through hole 244a. 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 arranged outside the large diameter cylinder portion 244. The second inclined surface 294 is inclined in a manner away from the central axis AX1 as it moves from the left end toward the right end.

[0246] The detector 278 is arranged inside the insertion tube 42. The detector 278 includes a plurality of (two in this embodiment) magnets 298, a substrate 300, and a plurality of (two in this embodiment) magnetic sensors 302.

[0247] 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.

[0248] The substrate 300 is arranged inside the connecting cylinder 246. The substrate 300 is arranged along a plane including the up-down direction and the front-back direction. The substrate 300 includes 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 is opposite to the first movable member 270 in the left-right direction. The second opposing surface 300b is opposite to the second movable member 274 in the left-right direction.

[0249] 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 arranged at a position closer to the front side than the first magnet 298a. At this time, the first magnetic sensor 302a is not opposite to the first magnet 298a in the left-right direction.

[0250] The second magnetic sensor 302b is fixed to the second relative surface 300b. When the second movable member 274 is located at the initial position, the second magnetic sensor 302b is opposite to 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 is not opposite to the second magnet 298b in the left-right direction.

[0251] like Fig. 22 As shown, when the first reel 30A is installed on the right reel installation unit 36, the insertion cylinder 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, pressing the first operated portion 284 in the forward direction toward the inside of the small-diameter cylinder 248. The first movable member 270 moves in the forward direction and stops at a position where the first magnet 298a and the first magnetic sensor 302a are relative to each other in the left-right direction. Therefore, the first magnetic sensor 302a detects the first magnet 298a. The magnet detection signal of the first magnetic sensor 302a detecting the first magnet 298a is sent to the control unit 68 (refer to Figure 2). In addition, the second movable member 274 is not pressed by the first reel 30A. Therefore, the second magnetic sensor 302b is opposite to the second magnet 298b in the left-right direction. The magnet detection signal of the second magnetic sensor 302b detecting the second magnet 298b is sent to the control unit 68. The control unit 68 detects that the first reel 30A has been installed on the right reel installation unit 36 ​​based on the magnet detection signal of the first magnetic sensor 302a and the magnet detection signal based on the second magnetic sensor 302b.

[0252] like Fig.23 As shown, when the second reel 30B is installed on the right reel installation unit 36, the insertion cylinder 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, pressing the first operated portion 284 in the forward direction toward the inside of the small-diameter cylinder 248. The first movable member 270 moves in the forward direction and stops at a position where the first magnet 298a and the first magnetic sensor 302a are relative to each other in the left-right direction. Therefore, the first magnetic sensor 302a can detect the first magnet 298a. The magnet detection signal of the first magnetic sensor 302a detecting the first magnet 298a is sent to the control unit 68 (refer to Figure 2 ). In addition, the second rib 230 slides on the second inclined surface 294 of the second operated portion 292, pressing the second operated portion 292 in the forward direction toward the inside of the large-diameter cylinder 244. The second movable member 274 moves in the forward direction and stops at a position where the second magnet 298b is located closer to the front side than the second magnetic sensor 302b. Therefore, the second magnetic sensor 302b does not detect the second magnet 298b. The magnet non-detection signal 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 has been installed on the right reel installation unit 36 ​​based on the magnet detection signal of the first magnetic sensor 302a and the magnet non-detection signal based on the second magnetic sensor 302b.

[0253] like Fig.24 As shown, when the third reel 30C is installed on the right reel installation unit 36, the insertion cylinder 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, pressing the second operated portion 292 in the forward direction toward the inside of the large diameter cylinder 244. The second movable member 274 moves in the forward direction and stops at a position where the second magnet 298b is located more forward than the second magnetic sensor 302b. Therefore, the second magnetic sensor 302b does not detect the second magnet 298b. The magnet non-detection signal that the second magnetic sensor 302b does not detect the second magnet 298b is sent to the control unit 68 (refer to Figure 2). In addition, the first movable member 270 is not pressed by the third reel 30C. Therefore, the first magnetic sensor 302a is not opposite to the first magnet 298a in the left-right direction. The magnet non-detection signal that the first magnetic sensor 302a does not detect the first magnet 298a is sent to the control unit 68. The control unit 68 detects that the third reel 30C has been installed on the right reel installation unit 36 ​​based on the magnet non-detection signal of the first magnetic sensor 302a and the magnet non-detection signal based on the second magnetic sensor 302b.

[0254] (Third embodiment)

[0255] The following describes the differences between the third embodiment and the first embodiment. Fig.25 As shown, in this embodiment, the reel 28 of the reel 30 has a reel member 402 and an information member 404 which is an independent component relative to the reel member 402. Among them, the reel member 402 with the same shape is used in the first reel 28A, the second reel 28B and the third reel 28C. The information members 404 with different shapes are used in the first reel 28A, the second reel 28B and the third reel 28C. That is, the first information member 404A is used in the first reel 28A, the second information member 404B is used in the second reel 28B, and the third information member 404C is used in the third reel 28C. The reel member 402 and the information member 404 can be made of the same material or different materials. For example, the reel member 402 can be made of a resin material, and the information member 404 can be made of a resin material with higher hardness. Alternatively, the reel member 402 can be made of a resin material, and the information member 404 can be made of a metal material.

[0256] like Fig.26 As shown, the reel member 402 includes a main body 100, a left flange 102, and a right flange 104. The main body 100 includes a main body 110 and a partition 112. The partition 112 includes a partition plate 406 in a substantially flat plate shape. A through hole 406a is formed in the center of the partition plate 406. Fig. 27 As shown in FIG. 1 , on the left side surface of the partition plate 406, an engaging protrusion 406b is formed at the periphery of the through hole 406a and protrudes toward the left. Fig.28 As shown, on the right side surface of the partition plate 406, an engaging recessed portion 406c is formed on the periphery of the through hole 406a and is recessed toward the left.

[0257] like Fig.29As shown, the information member 404 includes a flange 408, a protrusion 410, a pair of guides 412, and a pair of engaging claws 414. The flange 408 is formed in a substantially circular plate shape having a pair of notches 408a. The protrusion 410 protrudes from the flange 408 to the right. The pair of guides 412 and the pair of engaging claws 414 protrude from the flange 408 to the left. The pair of engaging claws 414 are arranged at positions corresponding to the pair of notches 408a.

[0258] like Fig.28 As shown, when the information member 404 is mounted on the reel member 402, the pair of guides 412 and the pair of engaging claws 414 are inserted into the through hole 406a from the right side of the partition plate 406. Fig.26 As shown, the flange portion 408 abuts against the engagement recess 406c, and the top ends of the pair of engagement claws 414 engage with the engagement protrusion 406b, so that the information member 404 is mounted on the reel member 402. When the information member 404 is to be removed from the reel member 402, the engagement of the top ends of the pair of engagement claws 414 is released from the engagement protrusion 406b, and the pair of guide portions 412 and the pair of engagement claws 414 are pulled out from the through hole 406a toward the right side of the partition plate 406. Thus, the information member 404 is removed from the reel member 402.

[0259] In the first information member 404A, the second information member 404B and the third information member 404C, the flange portion 408, the pair of guide portions 412 and the pair of engaging claw portions 414 have the same shape, and the protrusion 410 has a different shape from each other. That is, the protrusion 410 of the first information member 404A is equivalent to the first protrusion 122 having the first protrusion length 124 along the central axis AX1, and is equivalent to the first information portion 106. The protrusion 410 of the second information member 404B is equivalent to the second protrusion 130 having the second protrusion length 132 along the central axis AX1, and is equivalent to the second information portion 128. The protrusion 410 of the third information member 404C is equivalent to the third protrusion 138 having the third protrusion length 140 along the central axis AX1, and is equivalent to the third information portion 136.

[0260] (Effect)

[0261] In the reinforcing bar binding machine 2 of the present embodiment, the reel 28 further includes an information member 404 (a first information member 404A, a second information member 404B, and a third information member 404C) (an example of a first member) and a reel member 402 (an example of a second member) different from the information member 404. The information parts 106, 128, and 136 are provided on the information member 404. The main body 100 is provided on the reel member 402.

[0262] According to the above configuration, different types of information members 404 (first information member 404A, second information member 404B, third information member 404C) are only required to be prepared for different types of reels 30 (first reel 30A, second reel 30B, third reel 30C), and the reel member 402 can be shared.

[0263] In the reinforcing bar binding machine 2 of the present embodiment, the drum 30 (the first drum 30A, the second drum 30B, the third drum 30C) rotates around the central axis AX1 when mounted on the right drum mounting unit 36 ​​(an example of a drum mounting unit). The information parts 106, 128, and 136 include protrusions 410 (the first protrusion 122, the second protrusion 130, and the third protrusion 138) (an example of a protrusion) arranged on the central axis AX1 in the first internal space 116 and extending along the central axis AX1. The protrusions 410 (the first protrusion 122, the second protrusion 130, and the third protrusion 138) have different protrusion lengths (the first protrusion length 124, the second protrusion length 132, and the third protrusion length 140) according to the type of the drum 30 (the first drum 30A, the second drum 30B, and the third drum 30C). The protrusion lengths (the first protrusion length 124 , the second protrusion length 132 , and the third protrusion length 140 ) are type information.

[0264] According to the above configuration, the type of the spool 30 can be distinguished by a simple configuration of changing the protruding length of the protrusion 410. In addition, when the spool 30 rotates, the position of the protrusion 410 relative to the central axis AX1 can be suppressed from changing.

[0265] In the reinforcing bar binding machine 2 of the present embodiment, the tip ends of the pair of engaging claws 414 are engaged with the engaging protrusions 406 b , so that the information member 404 is fixed to the reel member 402 in a manner that prevents it from coming off.

[0266] According to the above structure, it is possible to suppress the information member 404 from accidentally falling off from the reel member 402.

[0267] In the reinforcing bar binding machine 2 of the present embodiment, a through hole 406a is formed in the reel member 402. The information member 404 passes through the through hole 406a.

[0268] If the through hole 406a is not formed in the reel member 402, it is difficult to fix the information member 404 to the reel member 402 in a manner that prevents it from coming off. According to the above structure, the through hole 406a formed in the reel member 402 can be used to fix the information member 404 to the reel member 402 in a manner that prevents it from coming off with a simple structure.

[0269] In the reinforcing bar binding machine 2 of the present embodiment, if the information member 404 is inserted into the through hole 406a from the side opposite to the first internal space 116, the information member 404 can be pulled out from the through hole 406a.

[0270] According to the above configuration, the work of attaching the information member 404 to the reel member 402 and the work of detaching the information member 404 from the reel member 402 can be performed more easily.

[0271] (Fourth embodiment)

[0272] The following describes the fourth embodiment, which is different from the first embodiment. Fig.30 As shown, in this embodiment, the reel 28 of the reel 30 has a reel member 502 and an information member 504 which is an independent component relative to the reel member 502. Among them, the reel member 502 of the same shape is used in the first reel 28A, the second reel 28B and the third reel 28C. The information members 504 of different shapes are used in the first reel 28A, the second reel 28B and the third reel 28C. That is, the first information member 504A is used in the first reel 28A, the second information member 504B is used in the second reel 28B, and the third information member 504C is used in the third reel 28C. The reel member 502 and the information member 504 can be made of the same material or different materials. For example, the reel member 502 can be made of a resin material, and the information member 504 can be made of a resin material with higher hardness. Alternatively, the reel member 502 can be made of a resin material, and the information member 504 can be made of a metal material.

[0273] like Fig.31 As shown, the reel member 502 includes a main body 100, a left flange 102, and a right flange 104. The main body 100 includes a main body 110 and a partition 112. The partition 112 includes a partition plate 506 in a substantially flat plate shape. A through hole 506a is formed in the center of the partition plate 506. Fig.32 As shown, on the left side surface of the partition plate 506, there are formed a supporting protrusion 506b protruding toward the left at the periphery of the through hole 506a, a stopper portion 506c arranged on the inner side of the supporting protrusion 506b, and a locking portion 506d arranged on the inner side of the supporting protrusion 506b and on the left side of the stopper portion 506c.

[0274] The information member 504 includes a flange 508, a protrusion 510, and a handle 512. The flange 508 is formed in a substantially disk shape having a pair of notches 508a. The protrusion 510 protrudes rightward from the flange 508. The handle 512 protrudes leftward from the flange 508. The handle 512 has a substantially flat plate shape along the length direction of the flange 508.

[0275] like Fig.32 As shown, when the information member 504 is mounted on the reel member 502, the protrusion 510 is inserted into the through hole 506a from the left side of the partition plate 506, as shown in FIG. Fig.33 As shown, the flange 508 is brought into contact with the partition plate 506. From this state, the information member 504 is rotated in the direction (for example, counterclockwise) in which the flange 508 and the stopper 506c are brought into contact. Fig.34 As shown, the flange 508 is engaged with the engagement portion 506d, and the information member 504 is installed on the reel member 502. When the information member 504 is to be removed from the reel member 502, the handle 512 is grasped and the information member 504 is rotated in a direction (for example, clockwise) in which the flange 508 is away from the rotation stop portion 506c. Fig.33 As shown, the engagement between the flange 508 and the engagement portion 506d is released. From this state, the protrusion 510 is pulled out from the through hole 506a, and the information member 504 is removed from the reel member 502.

[0276] In the first information member 504A, the second information member 504B, and the third information member 504C, the flange portion 508 and the handle portion 512 have the same shape, and the protrusion portion 510 has a different shape from each other. That is, the protrusion portion 510 of the first information member 504A corresponds to the first protrusion 122 having the first protrusion length 124 along the central axis AX1, and corresponds to the first information portion 106. The protrusion portion 510 of the second information member 504B corresponds to the second protrusion 130 having the second protrusion length 132 along the central axis AX1, and corresponds to the second information portion 128. The protrusion portion 510 of the third information member 504C corresponds to the third protrusion 138 having the third protrusion length 140 along the central axis AX1, and corresponds to the third information portion 136.

[0277] In addition, Fig.30 In the left reel mounting unit 38 shown, a contact member (not shown) that contacts the handle portion 512 may be provided in order to prevent the information member 504 from falling off the reel member 502 .

[0278] (Effect)

[0279] In the reinforcing bar binding machine 2 of the present embodiment, the reel 28 further includes an information member 504 (a first information member 504A, a second information member 504B, and a third information member 504C) (an example of a first member) and a reel member 502 (an example of a second member) different from the information member 504. The information parts 106, 128, and 136 are provided on the information member 504. The main body 100 is provided on the reel member 502.

[0280] According to the above configuration, different types of information components 504 (first information component 504A, second information component 504B, third information component 504C) are only required to be prepared for different types of reels 30 (first reel 30A, second reel 30B, third reel 30C), and the reel component 502 can be shared.

[0281] In the reinforcing bar binding machine 2 of the present embodiment, the drum 30 (the first drum 30A, the second drum 30B, the third drum 30C) rotates around the central axis AX1 when mounted on the right drum mounting unit 36 ​​(an example of a drum mounting unit). The information parts 106, 128, and 136 include protrusions 510 (the first protrusion 122, the second protrusion 130, and the third protrusion 138) (an example of a protrusion) arranged on the central axis AX1 in the first internal space 116 and extending along the central axis AX1. The protrusions 510 (the first protrusion 122, the second protrusion 130, and the third protrusion 138) have different protrusion lengths (the first protrusion length 124, the second protrusion length 132, and the third protrusion length 140) according to the type of the drum 30 (the first drum 30A, the second drum 30B, and the third drum 30C). The protrusion lengths (the first protrusion length 124 , the second protrusion length 132 , and the third protrusion length 140 ) are type information.

[0282] According to the above configuration, the type of the spool 30 can be distinguished by a simple configuration of changing the protruding length of the protrusion 510. In addition, when the spool 30 rotates, the position of the protrusion 510 relative to the central axis AX1 can be suppressed from changing.

[0283] In the reinforcing bar binding machine 2 of the present embodiment, the flange portion 508 is engaged with the engaging portion 506d, so that the information member 504 is fixed to the reel member 502 in a manner preventing it from coming off.

[0284] According to the above structure, it is possible to suppress the information member 504 from accidentally falling off from the reel member 502.

[0285] In the reinforcing bar binding machine 2 of the present embodiment, a through hole 506a is formed in the reel member 502. The information member 504 passes through the through hole 506a.

[0286] If the through hole 506a is not formed in the reel member 502, it is difficult to fix the information member 504 to the reel member 502 in a manner that prevents it from coming off. According to the above structure, the through hole 506a formed in the reel member 502 can be used to fix the information member 504 to the reel member 502 in a manner that prevents it from coming off with a simple structure.

[0287] In the reinforcing bar binding machine 2 of the present embodiment, if the information member 504 is inserted into the through hole 506a from the side opposite to the first internal space 116, the information member 504 can be pulled out from the through hole 506a.

[0288] According to the above configuration, the work of attaching the information member 504 to the reel member 502 and the work of detaching the information member 504 from the reel member 502 can be performed more easily.

[0289] (Variation Example)

[0290] In one embodiment, Figure 7 , Fig. 9 and Fig.10 The information parts 106 , 128 , and 136 shown in the figures may protrude from the inner peripheral surface 110 b of the main body 110 .

[0291] In one embodiment, Figure 7 , Fig. 9 and Fig.10 The protrusions 122 , 130 , 138 shown in the figures may be arranged at positions deviated from the central axis AX1 .

[0292] In one embodiment, Fig.11 The detector 156 shown in the figure may include sensors other than the magnetic sensors 170 and 302 , for example, a sensor that detects the distance between the protrusions 122 , 130 , and 138 .

[0293] In one embodiment, Figure 4 The right reel mounting unit 36 ​​shown may be rotatable relative to the base 34. In this case, it is also possible that the reel 30 does not slide on the right reel mounting unit 36 ​​but rotates integrally with the right reel mounting unit 36.

[0294] In one embodiment, the reinforcing bar binding machine 2 may include a lamp for notifying error information in the form of light, or a speaker for notifying error information in the form of sound, instead of the display unit 52 .

[0295] 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 time other than the bundling process and the initialization process.

[0296] In one embodiment, it is also possible to replace Figure 1 The battery pack BP shown in the figure is provided with a power supply line which can be connected to an external power supply. In this case, the reinforcing bar binding machine 2 is operated by the power supplied from the external power supply via the power supply line.

[0297] In one embodiment, the reel storage portion 22 may also be disposed at the rear end of the twisted unit storage portion 14 .

[0298] In one embodiment, the reinforcing steel bar binding machine 2 may be a reinforcing steel bar binding machine other than a handheld type, for example, an autonomous mobile type.

[0299] In one embodiment, Fig.26 The information component 404 shown, Fig.31 The information member 504 shown may be removably mounted to the reel member 402, 502 using a fastener such as a screw. Alternatively, the information member 404, 504 may be non-removably mounted to the reel member 402, 502 by welding or the like. Alternatively, the information member 404, 504 may be removably mounted to the left reel mounting unit 38 instead of being mounted to the reel member 402, 502. In this case, the user needs to mount the information member 404, 504 corresponding to the type of the reel 30 to the left reel mounting unit 38 each time.

[0300] In one embodiment, the main power switch 50 may also be a touch switch. In this case, if the main power switch 50 is pressed when the control power supply (not shown) of the control unit 68 is disconnected, a path for supplying power from the battery pack BP to the control unit 68 is formed, the control power is turned on, and the MCU (not shown) is started, and the reinforcing bar binding machine 2 is turned on. After starting, the MCU switches the 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 even after the hand leaves the main power switch 50, the reinforcing bar binding machine 2 remains in the on state. In this state, if the main power switch 50 is pressed again, the MCU switches the semiconductor switch from on to off, so that the power supply from the battery pack BP to the control unit 68 is cut off, the control power is disconnected, and the reinforcing bar binding machine 2 is turned off.

[0301] In one embodiment, the reinforcing bar tying machine 2 may not include the main power switch 50. In this case, the reinforcing bar tying machine 2 may be turned on from the off state when the battery pack BP is mounted on the battery mounting portion 18 or when power is supplied from an external power source via a power line, and the reinforcing bar tying machine 2 may be turned off from the on state when the battery pack BP is removed from the battery mounting portion 18 or when power supply from an external power source via a power line is cut off.

[0302] In one embodiment, it may also be, Fig.16The initialization process of S6 is not performed after receiving the magnet detection signal in S2 (after "Yes" in S2), but after judging that the trigger 24 has been pulled in in the initial S12 (after "Yes" in S12). Similarly, it can also be, Fig.35 or Fig.37 The initialization process of S28 is not performed after it is determined in S24 that no error has occurred (after "No" in S24), but is performed after it is determined in the first S38 that the trigger 24 has been pulled in (after "Yes" in S38).

[0303] In one embodiment, the process performed by the control unit 68 to determine the type of the reel 30 (eg Fig.36 In the type judgment process), one type of reel 30, two types of reels 30, or more than four types of reels 30 can be judged.

[0304] In one embodiment, regardless of whether the specifications of the steel wire W and the specifications of the reel 28 are the same or different, the type of the reel 30 can be distinguished according to the manufacturing year of the steel wire W (or the manufacturing year of the reel 28). In this case, for example, for a reel 30 with a relatively new manufacturing year of the steel wire W (or the reel 28), the control unit 68 can determine that it can be used in the steel bar tying machine 2 as usual, and for a reel 30 with an relatively old manufacturing year of the steel wire W (or the reel 28), it can be determined that it cannot be used in the steel bar tying machine 2. Alternatively, the type of the reel 30 can be distinguished according to the manufacturing region and / or sales region of the reel 30. In this case, for example, when the sales area of ​​the reel 30 is consistent with the sales area of ​​the rebar bundling machine 2, the control unit 68 can determine that the reel 30 can be used in the rebar bundling machine 2 as usual. When the sales area of ​​the reel 30 is inconsistent with the sales area of ​​the rebar bundling machine 2, it can be determined that the reel 30 cannot be used in the rebar bundling machine 2.

[0305] In one embodiment, the process performed by the control unit 68 to determine the type of the reel 30 (eg Fig.36 The type determination process) may be performed at a different time from that in the above-described embodiment. For example, the control unit 68 may perform the process of determining the type of the reel 30 at a random time within a period of a predetermined time (e.g., 5 seconds) from the time when the reinforcing bar tying machine 2 is switched from the off state to the on state (e.g., the time when the main power switch 50 is switched from off to on, or the time when the battery pack BP is installed in the battery installation portion 18). Alternatively, the control unit 68 may perform the process of determining the type of the reel 30 at a random time. Fig.16 S14 (or Fig.35 , Fig.37The control unit 68 may determine the type of the reel 30 at a time when a predetermined time (e.g., 10 minutes) has passed after the binding process of S40 is completed. Alternatively, the control unit 68 may periodically determine the type of the reel 30 every time a predetermined time (e.g., 5 minutes) has passed. Alternatively, the control unit 68 may determine the type of the reel 30 at a time when a predetermined time (e.g., 1 second) has passed since the reinforcing bar binding machine 2 was switched from the closed state to the open state.

Claims

1. A steel bar bundling machine, wherein: The steel bar tying machine has: A reel having a reel and a wire wound around the reel; a reel installation unit, on which the reel is installed; a feeding unit that feeds the steel wire wound on the reel; A guide unit, which guides the steel wire to the periphery of the steel bar; a twisting unit that twists the steel wires around the reinforcing steel bar; and a detection unit for detecting the type of the roll, The reel has: a main body portion, on which the steel wire is wound and which has a first internal space into which the drum mounting unit is inserted; and an information unit storing type information indicating the type of the reel, When the reel is mounted on the reel mounting unit, the detection unit is arranged in the first internal space.

2. The steel bar bundling machine according to claim 1, wherein: The information portion has a protrusion protruding from the main body portion, The protrusion has different protrusion lengths according to the type of the reel, The protrusion length is the type information.

3. The steel bar bundling machine according to claim 2, wherein: The protrusion is arranged in the first internal space.

4. The steel bar bundling machine according to claim 3, wherein: The main body has: A main body having a cylindrical shape and an inner space; a partition body that divides the internal space of the main body into the first internal space and a second internal space different from the first internal space, The protrusion protrudes from the separator.

5. The steel bar bundling machine according to claim 3 or 4, wherein: The reel rotates around the central axis when mounted on the reel mounting unit, The protrusion is arranged on the central axis and extends along the central axis.

6. The steel bar bundling machine according to any one of claims 3 to 5, wherein: The detection unit has: a movable member, which is arranged at an initial position when the reel installation unit is not inserted into the first internal space, and which is pressed by the protrusion and moves from the initial position when the reel installation unit is inserted into the first internal space; as well as A detector detects the position of the movable member.

7. The steel bar bundling machine according to claim 6, wherein: The reel installation unit includes an insertion tube portion that can be inserted into the first internal space. The detector is arranged inside the insertion cylinder.

8. The steel bar bundling machine according to claim 7, wherein: The insertion tube has: a wall portion, which is opposite to the winding drum when the insertion cylinder is inserted into the first internal space; and a through hole penetrating through the wall portion, When the insertion tube is inserted into the first internal space, the protrusion penetrates the through hole and presses the movable member toward the inside of the insertion tube.

9. The steel bar bundling machine according to any one of claims 6 to 8, wherein: The detection unit further includes an urging member that urges the movable member toward the initial position.

10. The steel bar bundling machine according to any one of claims 1 to 9, wherein: The reel rotates around the reel mounting unit.

11. The steel bar bundling machine according to claim 10, wherein: The reel mounting unit has a higher hardness than the reel.

12. The steel bar bundling machine according to claim 11, wherein: The detection unit includes a contact portion that contacts the reel when the reel is mounted on the reel mounting unit. The abutment portion has a higher hardness than the winding shaft.

13. The steel bar tying machine according to any one of claims 1 to 12, wherein: The reinforcing steel bar bundling machine further includes a control unit that controls the feeding unit and the twisting unit to perform a bundling process of bundling the reinforcing steel bars using the steel wire. The control unit detects the type of the roll using the detection unit during the bundling process.

14. A steel bar bundling machine, wherein: The steel bar tying machine has: A reel having a reel and a wire wound around the reel; a reel installation unit, on which the reel is installed; a feeding unit that feeds the steel wire wound on the reel; A guide unit, which guides the steel wire to the periphery of the steel bar; a twisting unit that twists the steel wires around the reinforcing steel bar; and a detection unit for detecting the type of the roll, The reel has a protrusion having a different protrusion length depending on the type of the reel. The detection unit detects the kind of the reel based on the protrusion length of the protrusion.

15. A steel bar bundling machine, wherein: The steel bar tying machine has: A reel installation unit capable of selectively installing a first reel including a first protrusion having a first protrusion length and a steel wire and a second reel including a second protrusion having a second protrusion length and a steel wire; a feeding unit that feeds the steel wire; A guide unit, which guides the steel wire to the periphery of the steel bar; A twisting unit twists the steel wires around the reinforcing steel bar; as well as A detection unit capable of detecting the first protrusion or the second protrusion.

16. A reel used in a steel bar bundling machine, wherein: The reel includes a reel and a wire wound around the reel. The steel bar tying machine has: a reel installation unit, on which the reel is installed; a feeding unit that feeds the steel wire wound on the reel; A guide unit, which guides the steel wire to the periphery of the steel bar; a twisting unit that twists the steel wires around the reinforcing steel bar; and a detection unit for detecting the type of the roll, The reel has: an information unit storing type information indicating the type of the reel; The main body is wound with the steel wire and has a first internal space. The drum installation unit is inserted into the first internal space and the detection unit is arranged in the first internal space when the drum installation unit is inserted.

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

18. A reel used in a steel bar bundling machine, wherein: The reel includes a reel and a wire wound around the reel. The steel bar tying machine has: a reel installation unit, on which the reel is installed; a feeding unit that feeds the steel wire wound on the reel; A guide unit, which guides the steel wire to the periphery of the steel bar; A twisting unit twists the steel wires around the reinforcing steel bar; as well as a detection unit for detecting the type of the roll, The reel includes a protrusion having a different protrusion length according to the type of the reel, and the type of the reel is detected by the detection unit based on the protrusion length.

19. A reel used in a steel bar bundling machine, wherein: The reel includes a reel and a wire wound around the reel. The reel includes a protrusion having a different protrusion length depending on the type of the reel.

20. A steel bar bundling machine, wherein: The steel bar tying machine has: A reel having a reel and a wire wound around the reel; a reel installation unit, on which the reel is installed; a feeding unit that feeds the steel wire wound on the reel; A guide unit, which guides the steel wire to the periphery of the steel bar; A twisting unit twists the steel wires around the reinforcing steel bar; a detection unit for detecting the type of the roll; A main power switch, which switches the steel bar binding machine between an on state and an off state; the reporting department, which reports erroneous information; as well as a control unit that controls the feeding unit, the twisting unit, and the reporting unit, and receives a signal related to the type of the reel from the detection unit, When the signal received from the detection unit changes while the reinforcing bar binding machine is in the on state, the control unit controls the reporting unit.

21. A steel bar bundling machine, wherein: The steel bar tying machine has: a reel installation unit, on which a reel is installed, the reel having a reel and a steel wire wound around the reel; a detection unit for detecting the type of the roll; A main power switch, which switches the steel bar binding machine between an on state and an off state; a signal receiving unit that receives a signal related to the type of the reel from the detection unit; as well as A reporting unit reports error information when the signal received by the signal receiving unit changes when the steel bar binding machine is in the turned-on state.

22. The steel bar tying machine according to claim 1, wherein: The reel further includes a first member and a second member different from the first member. The information unit is provided on the first member. The main body is provided on the second member.

23. The steel bar bundling machine according to claim 22, wherein: The reel rotates around the central axis when mounted on the reel mounting unit, The information portion includes a protrusion, which is arranged on the central axis in the first internal space and extends along the central axis. The protrusion has different protrusion lengths according to the type of the reel, The protrusion length is the type information.

24. The steel bar tying machine according to claim 22 or 23, wherein: The first member is fixed to the second member in a manner preventing it from coming off.

25. The steel bar tying machine according to claim 24, wherein: The second member has a through hole formed therein, and the first member passes through the through hole.

26. The steel bar tying machine according to claim 25, wherein: If the first member is inserted into the through hole from the side opposite to the first internal space, the first member can be removed from the through hole.

27. The reel of claim 16, wherein: The reel includes a first member and a second member different from the first member. The information unit is provided on the first member. The main body is provided on the second member.

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