Rebar tying machine and reel

Abstract

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

Description

Technical Field

[0001] This specification relates to a reinforcing bar tying machine and a reel.

Background Art

[0002] Patent Document 1 discloses a reinforcing bar tying machine. The reinforcing bar tying machine includes a reel having a bobbin and a wire wound around the bobbin, a reel mounting unit to which the reel is attached, a feeding unit for feeding the wire wound around the bobbin, a guiding unit for guiding the wire around the reinforcing bar, a twisting unit for twisting the wire around the reinforcing bar, and a detecting unit for detecting the type of the reel. The bobbin is a body portion around which the wire is wound, and has a first internal space into which the reel mounting unit is inserted, a pair of flange portions disposed at both ends of the body portion, and an information portion that protrudes outward from the outer surface of the flange portion and holds type information indicating the type of the reel.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above - mentioned reinforcing bar tying machine, the information portion protrudes outward from the outer surface of the flange portion. As a result, the reel becomes larger. Also, since the information portion is disposed on the outer surface of the flange portion, the detecting unit is disposed outside the reel. As a result, the reinforcing bar tying machine becomes larger.

[0005] Furthermore, in the above-described rebar tying machine, the information unit includes at least one of the first, second, and third ribs. The detection unit detects the type of reel based on the combination of ribs selected from the first, second, and third ribs. This configuration requires multiple ribs, which complicates the structure of the reel.

[0006] Furthermore, with the rebar tying machine described above, the reel may be removed from the reel mounting unit while the rebar tying machine is in the ON state. In this configuration, when the reel is reattached to the reel mounting unit while the rebar tying machine is still ON, the wire arrangement will differ from the wire arrangement before the reel was attached to the reel mounting unit. When tying rebar using the rebar tying machine with the wire arrangement differing before and after reel attachment, poor tying of the rebar may occur. For this reason, it is necessary to discourage users from tying rebar using the rebar tying machine.

[0007] In this embodiment, the objective is to provide at least one of the following: a technique that can suppress the enlargement of at least one of the reel and the rebar tying machine; a technique that can suppress the complexity of the reel's structure; and a technique that can suppress the user from performing rebar tying using the rebar tying machine. [Means for solving the problem]

[0008] The rebar tying machine disclosed herein comprises a reel having a bobbin and wire wound around the bobbin, a reel mounting unit to which the reel is attached, a feeding unit for feeding the wire wound around the bobbin, a guiding unit for guiding the wire around the rebar, a twisting unit for twisting the wire around the rebar, and a detection unit for detecting the type of reel. The bobbin comprises a body around which the wire is wound, having a body having a first internal space into which the reel mounting unit is inserted, and an information unit for holding type information indicating the type of reel. The detection unit is located in the first internal space when the reel is attached to the reel mounting unit.

[0009] According to the above configuration, the detection unit is positioned in the first internal space of the reel when the reel is attached to the reel mounting unit. Therefore, compared to a configuration in which the detection unit is not positioned in the first internal space of the reel when the reel is attached to the reel mounting unit, it is possible to suppress an increase in the size of the rebar tying machine.

[0010] Another rebar tying machine disclosed herein comprises a reel having a bobbin and wire wound on the bobbin, a reel mounting unit to which the reel is attached, a feeding unit for feeding the wire wound on the bobbin, a guiding unit for guiding the wire around the rebar, a twisting unit for twisting the wire around the rebar, and a detection unit for detecting the type of reel. The bobbin has projections having different projection lengths depending on the type of reel. The detection unit detects the type of reel based on the projection lengths of the projections.

[0011] According to the above configuration, the protruding length of the protrusions varies depending on the type of reel. This easily adjustable configuration allows for differentiation of reel types while suppressing an increase in the number of protrusions. This, in turn, helps to prevent the reel structure from becoming overly complex.

[0012] Another rebar tying machine disclosed herein comprises a reel mounting unit to which a first reel having a first projection and wire having a first projection length and a second reel having a second projection and wire having a second projection length can be selectively attached, a wire feeding unit, a guide unit for guiding the wire around the rebar, a twisting unit for twisting the wire around the rebar, and a detection unit capable of detecting the first projection or the second projection.

[0013] According to the above configuration, the protruding length of the protrusions varies depending on the type of reel. This easily adjustable configuration allows for differentiation of reel types while suppressing an increase in the number of protrusions. This, in turn, helps to prevent the reel structure from becoming overly complex.

[0014] The reels disclosed herein are used in a rebar tying machine. The reel comprises a bobbin and a wire wound around the bobbin. The rebar tying machine comprises a reel mounting unit to which the reel is attached, a feeding unit for feeding the wire wound around the bobbin, a guiding unit for guiding the wire around the rebar, a twisting unit for twisting the wire around the rebar, and a detection unit for detecting the type of reel. The bobbin comprises an information section for holding type information indicating the type of reel, and a body around which the wire is wound, the body having a first internal space into which the reel mounting unit is inserted and into which the detection unit is positioned when the reel mounting unit is inserted.

[0015] According to the above configuration, the detection unit is positioned in the first internal space of the reel when the reel is attached to the reel mounting unit. Therefore, compared to a configuration in which the detection unit is not positioned in the first internal space of the reel when the reel is attached to the reel mounting unit, it is possible to suppress an increase in the size of the rebar tying machine.

[0016] Another reel disclosed herein is used in a rebar tying machine. The reel comprises a bobbin and a wire wound around the bobbin. The rebar tying machine comprises a reel mounting unit to which the reel is attached, a feeding unit for feeding the wire wound around the bobbin, a guiding unit for guiding the wire around the rebar, a twisting unit for twisting the wire around the rebar, and a detection unit for detecting the type of reel. The bobbin has different projection lengths depending on the type of reel and has a projection on which the type of reel is detected by the detection unit based on the projection length.

[0017] According to the above configuration, the protruding length of the protrusions varies depending on the type of reel. This easily adjustable configuration allows for differentiation of reel types while suppressing an increase in the number of protrusions. This, in turn, helps to prevent the reel structure from becoming overly complex.

[0018] Another reel disclosed herein is used in a rebar tying machine. The reel comprises a bobbin and wire wound around the bobbin. The bobbin has projections having different projection lengths depending on the type of reel.

[0019] According to the above configuration, the protruding length of the protrusions varies depending on the type of reel. This easily adjustable configuration allows for differentiation of reel types while suppressing an increase in the number of protrusions. This, in turn, helps to prevent the reel structure from becoming overly complex.

[0020] Another rebar tying machine disclosed herein includes a reel having a bobbin and wire wound on the bobbin; a reel mounting unit to which the reel is attached; a feeding unit for feeding the wire wound on the bobbin; a guiding unit for guiding the wire around the rebar; a twisting unit for twisting the wire around the rebar; a detection unit for detecting the type of reel; a main power switch for switching the rebar tying machine on and off; an alarm unit for alarming error information; and a control unit for controlling the feeding unit, the twisting unit and the alarm unit, and for receiving a signal from the detection unit regarding the type of reel. The control unit may control the alarm unit when the signal received from the detection unit changes while the rebar tying machine is in the ON state.

[0021] With the above configuration, when the signal received from the detection unit changes while the rebar tying machine is ON, for example, when the reel is removed from the reel mounting unit while the rebar tying machine is ON, the notification unit notifies error information. This allows the user to recognize the error information. Therefore, it is possible to prevent the user from reattaching the reel to the reel mounting unit and tying rebar using the rebar tying machine without positioning the wire tip in the correct position.

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

[0023] According to the above configuration, by recognizing the error information by the user, it is possible to suppress the user from performing bundling of steel bars using the steel bar bundling machine.

Brief Description of the Drawings

[0024] [Figure 1] It is a perspective view of the steel bar bundling machine 2 of the first embodiment. [Figure 2] In the steel bar bundling machine 2 of the first embodiment, it is a left side view in a state where the left housing 8 and the reel cover 10 are removed. [Figure 3] In the steel bar bundling machine 2 of the first embodiment, it is a perspective view in a state where the reel cover 10 is opened. [Figure 4] It is a perspective view of the reel accommodating portion 22 of the steel bar bundling machine 2 of the first embodiment.​​​​​​​​​​​​​​​​​​​​This is a horizontal cross-sectional view of the right reel mounting unit 36 ​​and the detection unit 150 of the first embodiment. [Figure 12] This is a longitudinal cross-sectional view of the right reel mounting unit 36 ​​and the detection unit 150 of the first embodiment. [Figure 13] This 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. [Figure 14] This 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. [Figure 15] This 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. [Figure 16] This is an example of a flowchart of the process executed by the control unit 68 of the first embodiment. [Figure 17] This is a perspective view of the first reel 30A of the second embodiment, seen from the right side. [Figure 18] This is a cross-sectional view of the first reel 30A of the second embodiment. [Figure 19] This is a cross-sectional view of the second reel 30B of the second embodiment. [Figure 20] This is a cross-sectional view of the third reel 30C of the second embodiment. [Figure 21] This is a horizontal cross-sectional view of the right reel mounting unit 36 ​​and the detection unit 150 of the second embodiment. [Figure 22] This 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. [Figure 23] This 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. [Figure 24] This 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. [Figure 25] This is a cross-sectional view of the reel storage section 22 and the reel 30 of the rebar tying machine 2 of the third embodiment. [Figure 26] This is a cross-sectional view of the reel 30 of the third embodiment. [Figure 27]This is a perspective view of the bobbin member 402 of the third embodiment, viewed from the left side. [Figure 28] This is a perspective view from the right side showing the state when the information member 404 is attached to the bobbin member 402 of the third embodiment. [Figure 29] This is a perspective view of the information component 404 of the third embodiment, viewed from the left side. [Figure 30] This is a cross-sectional view of the reel storage section 22 and the reel 30 of the rebar tying machine 2 of the fourth embodiment. [Figure 31] This is a cross-sectional view of the reel 30 of the fourth embodiment. [Figure 32] This is a perspective view from the left, showing the state when the information member 504 is attached to the bobbin member 502 of the fourth embodiment. [Figure 33] This is a perspective view from the left, showing another state when the information member 504 is attached to the bobbin member 502 of the fourth embodiment. [Figure 34] This is a perspective view from the left, showing yet another state when the information member 504 is attached to the bobbin member 502 of the fourth embodiment. [Figure 35] This is another example of a flowchart of the process performed by the control unit 68 of the first embodiment. [Figure 36] This is an example of a flowchart of the type determination process performed by the control unit 68 of the first embodiment. [Figure 37] This is yet another example of a flowchart of the process performed by the control unit 68 of the first embodiment. [Modes for carrying out the invention]

[0025] Hereinafter, representative and non-limiting examples of the present invention will be described in detail with reference to the drawings. This detailed description is intended simply to show those skilled in the art details for carrying out preferred examples of the present invention and is not intended to limit the scope of the invention. Furthermore, additional features and inventions disclosed below may be used separately from or in conjunction with other features and inventions to provide further improved rebar tying machines and reels, methods for manufacturing and using the same.

[0026] Furthermore, the combinations of features and processes disclosed in the following detailed description are not essential for carrying out the present invention in the broadest sense, and are described solely to illustrate representative examples of the present invention. Moreover, the various features of the representative examples described above and below, as well as the various features described in the independent and dependent claims, do not necessarily have to be combined in the same way as the examples described herein or in the order listed, in order to provide additional and useful embodiments of the present invention.

[0027] All features described herein and / or in the claims are intended to be disclosed individually and independently of each other, as limitations to the original disclosure and claimed specific subject matter, separate from the features described in the examples and / or claims. Furthermore, all descriptions of numerical ranges and groups or clusters are intended to disclose intermediate configurations as limitations to the original disclosure and claimed specific subject matter.

[0028] In one or more embodiments, the rebar tying machine includes a reel having a bobbin and wire wound around the bobbin, a reel mounting unit to which the reel is rotatably mounted, a feeding unit for feeding the wire wound around the bobbin, a guiding unit for guiding the wire around the rebar, a twisting unit for twisting the wire around the rebar, and a detection unit for detecting the type of reel. The bobbin is a body around which the wire is wound, having a body having a first internal space into which the reel mounting unit is inserted, and an information unit for holding type information indicating the type of reel. The detection unit is located in the first internal space when the reel is mounted on the reel mounting unit.

[0029] In one or more embodiments, the information section may include a projection protruding from the body. The projection may have different projection lengths depending on the type of reel. The projection length may represent type information.

[0030] According to the above configuration, the protruding length of the protrusions varies depending on the type of reel. This easily adjustable configuration allows for differentiation of reel types while suppressing an increase in the number of protrusions. This, in turn, helps to prevent the reel structure from becoming overly complex.

[0031] In one or more embodiments, the projection may be located in the first internal space.

[0032] With the above configuration, it is possible to suppress the increase in the size of the reel compared to a configuration in which the protrusion is not placed in the first internal space.

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

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

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

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

[0037] In one or more embodiments, the detection unit may include a movable member that is initially positioned when the reel mounting unit is not inserted into the first internal space and is pressed by a projection to move from the initial position when the reel mounting unit is inserted into the first internal space, and a detector for detecting the position of the movable member.

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

[0039] In one or more embodiments, the reel mounting unit may include an insertion cylinder portion that is inserted into a first internal space. The detector may be located inside the insertion cylinder portion.

[0040] With the above configuration, it is possible to prevent the detector from coming into contact with the reel and causing damage.

[0041] In one or more embodiments, the insertion cylinder portion may include a wall portion that faces the reel when inserted into the first internal space, and a through hole that penetrates the wall portion. The projection may penetrate the through hole and press the movable member toward the interior of the insertion cylinder portion when the insertion cylinder portion is inserted into the first internal space.

[0042] According to the above configuration, when the reel is attached to the reel mounting unit, the movable member is positioned inside the insertion cylinder. This allows the detector to easily detect the position of the movable member.

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

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

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

[0046] In a configuration where the bobbin rotates together with the reel mounting unit, a separate configuration is required to rotate the reel mounting unit. This complicates the structure of the rebar tying machine. The above configuration, however, can suppress the complexity of the rebar tying machine's structure compared to a configuration where the bobbin rotates together with the reel mounting unit.

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

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

[0049] In one or more embodiments, the detection unit may include a contact portion that contacts the bobbin when the reel is attached to the reel mounting unit. The hardness of the contact portion may be higher than the hardness of the bobbin.

[0050] According to the above configuration, wear on the contact area can be suppressed.

[0051] In one or more embodiments, the rebar tying machine may further include a control unit that controls a feeding unit and a twisting unit to perform a tying process in which rebar is tied together using wire. The control unit may detect the type of reel by a detection unit during the tying process.

[0052] According to the above configuration, the feeding unit and the twisting unit can be controlled based on the type of reel detected during the tying process. This makes it possible to suppress the occurrence of poor tying of reinforcing bars.

[0053] In one or more embodiments, the reel is used in a rebar tying machine. The reel comprises a bobbin and a wire wound around the bobbin. The rebar tying machine comprises a reel mounting unit to which the reel is attached, a feeding unit for feeding the wire wound around the bobbin, a guiding unit for guiding the wire around the rebar, a twisting unit for twisting the wire around the rebar, and a detection unit for detecting the type of reel. The bobbin comprises an information section that holds type information indicating the type of reel, and a body around which the wire is wound, the body having a first internal space into which the reel mounting unit is inserted and into which the detection unit is positioned when the reel mounting unit is inserted.

[0054] In one or more embodiments, the information unit may be located in a first internal space.

[0055] The above configuration makes it possible to suppress the increase in the size of the reel.

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

[0057] According to the above configuration, different types of first components are required for different types of reels, and the second component can be made common.

[0058] In one or more embodiments, the reel may rotate about a central axis when attached to the reel mounting unit. The information unit may have a projection that is positioned on the central axis within the first internal space and extends along the central axis. The projection may have different projection lengths depending on the type of the reel. The projection length may be the type information.

[0059] With the above configuration, the type of reel can be distinguished by an easy mechanism that allows for changing the protruding length of the projection. Furthermore, it is possible to suppress changes in the position of the projection relative to the central axis when the reel rotates.

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

[0061] According to the above configuration, it is possible to prevent the first member from unexpectedly detaching from the second member.

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

[0063] If the second member does not have a through hole, it becomes difficult to secure the first member to the second member in a way that prevents it from coming loose. With the above configuration, the first member can be secured to the second member in a way that prevents it from coming loose by utilizing the through hole formed in the second member with a simple configuration.

[0064] In one or more embodiments, the first member may be insertable into and withdrawn from the through-hole from the side opposite to the first internal space.

[0065] With the above configuration, the attachment of the first member to the second member and the removal of the first member from the second member can be made easier.

[0066] In one or more embodiments, the rebar tying machine may include a reel having a bobbin and wire wound around the bobbin; a reel mounting unit to which the reel is attached; a feeding unit for feeding the wire wound around the bobbin; a guiding unit for guiding the wire around the rebar; a twisting unit for twisting the wire around the rebar; a detection unit for detecting the type of the reel; and a control unit for controlling the feeding unit and the twisting unit to perform a tying process in which the rebar is tied using the wire. The control unit may detect the type of the reel using the detection unit when the rebar tying machine is switched from an off state to an on state.

[0067] With the above configuration, the type of reel can be detected after the rebar tying machine switches from the off state to the on state, but before the tying process is performed.

[0068] In one or more embodiments, the rebar tying machine may include: a reel having a bobbin and wire wound around the bobbin; a reel mounting unit to which the reel is attached; a feeding unit for feeding the wire wound around the bobbin; a guiding unit for guiding the wire around the rebar; a twisting unit for twisting the wire around the rebar; a detection unit for detecting the type of the reel; an operating member; and a control unit that, when the operating member is operated, controls the feeding unit and the twisting unit to perform a tying process in which the rebar is tied using the wire. The control unit may detect the type of the reel by the detection unit after the operating member has been operated and before the tying process is performed, while the rebar tying machine is in the ON state.

[0069] With the above configuration, the type of reel can be detected after the operating member has been operated but before the binding process is performed.

[0070] In one or more embodiments, the rebar tying machine may include: a reel having a bobbin and wire wound around the bobbin; a reel mounting unit to which the reel is attached; a feeding unit for feeding the wire wound around the bobbin; a guiding unit for guiding the wire around the rebar; a twisting unit for twisting the wire around the rebar; a detection unit for detecting the type of the reel; an operating member; and a control unit that, when the operating member is operated, controls the feeding unit and the twisting unit to perform a tying process in which the rebar is tied using the wire. The control unit may detect the type of the reel by the detection unit after the tying process has been performed and before the operating member is operated again, while the rebar tying machine is in the ON state.

[0071] With the above configuration, the type of reel can be detected after the binding process has been performed and before the operating member is operated to perform the binding process again.

[0072] (First embodiment) As shown in Figure 1, the rebar tying machine 2 ties multiple reinforcing bars R together using wire W. The rebar tying machine 2 uses wire W of various diameters (for example, from 0.5 mm to 2.5 mm in diameter) depending on the diameter of the reinforcing bars R used. For example, when tying small-diameter reinforcing bars R with a diameter of 16 mm or less (for example, 16 mm in diameter), wire W with a diameter of 1.6 mm or less (for example, 0.8 mm) is used, and when tying large-diameter reinforcing bars R with a diameter greater than 16 mm (for example, 25 mm or 32 mm in diameter), wire W with a diameter of 1.6 mm or more (for example, 2.0 mm) is used. Hereinafter, the longitudinal direction of the twisting unit 66 (see Figure 2) will be referred to as the front-to-back direction, the direction perpendicular to the front-to-back direction will be referred to as the up-and-down direction, and the direction perpendicular to both the front-to-back direction and the up-and-down direction will be referred to as the left-to-right direction.

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

[0074] The main body 4 comprises a twisting unit housing 14, a grip portion 16, a battery mounting portion 18, a feed unit housing 20, and a reel housing 22. The twisting unit housing 14, the grip portion 16, the battery mounting portion 18, and the feed unit housing 20 are formed by a right housing 6 and a left housing 8. The reel housing 22 is formed by a right housing 6, a left housing 8, and a reel cover 10.

[0075] As shown in Figure 2, the torsion unit housing 14 extends in the front-rear direction. The grip portion 16 is located at the lower rear of the torsion unit housing 14. The grip portion 16 is held by the user. The longitudinal direction of the grip portion 16 is slightly inclined with respect to the vertical direction. A trigger 24 is retractably mounted on the upper front of the grip portion 16.

[0076] The battery mounting section 18 is located at the lower end of the grip section 16. The battery pack BP is detachably attached to the lower end of the battery mounting section 18. The battery pack BP is attached to the battery mounting section 18 by sliding it forward and downward relative to the battery mounting section 18, and removed from the battery mounting section 18 by sliding it rearward and upward relative to the battery mounting section 18. The battery pack BP is equipped with a secondary battery, such as a lithium-ion battery.

[0077] The feed unit housing 20 is located at the front lower part of the twist unit housing 14. The feed unit housing 20 is located in front of the grip portion 16.

[0078] The reel housing section 22 is located at the lower end of the feed unit housing section 20. In Figure 2, the reel housing section 22 is shown by a dashed line. The reel housing section 22 is connected to the front end of the battery mounting section 18 via a connection point 23. As shown in Figure 3, the reel housing section 22 is capable of housing a reel 30 equipped with a bobbin 28 and wire W.

[0079] The reel housing section 22 comprises a base 34, 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 housing space 40 inside. The reel 30 is placed in the reel housing space 40.

[0080] As shown in Figure 4, the right reel mounting unit 36 ​​is formed in the left housing 8. The right reel mounting unit 36 ​​is located in the reel housing space 40. The right reel mounting unit 36 ​​includes an insertion cylinder portion 42. The insertion cylinder portion 42 is made of, for example, a resin material. The insertion cylinder portion 42 is fixed to the base portion 34 by a screw 43. The insertion cylinder portion 42 does not rotate relative to the base portion 34. The insertion cylinder portion 42 rotatably supports the reel 30.

[0081] The insertion cylinder portion 42 comprises a cylinder portion 44 and a bottom wall portion 46. The cylinder portion 44 comprises a first cylinder portion 44a having a substantially cylindrical shape and a second cylinder portion 44b having a substantially frustoconical shape. One end of the first cylinder portion 44a is connected to the base portion 34. The first cylinder portion 44a extends to the left from the base portion 34. The second cylinder portion 44b extends to the left from the other end of the first cylinder portion 44a. The diameter of the second cylinder portion 44b decreases as it moves to the left. As a result, the reel 30 is guided by the second cylinder portion 44b and smoothly inserted into the insertion cylinder portion 42. The bottom wall portion 46 is located at the left end of the second cylinder portion 44b. The bottom wall portion 46 closes the opening at the left end of the second cylinder portion 44b.

[0082] As shown in Figure 5, the left reel mounting unit 38 is formed on the reel cover 10. The left reel mounting unit 38 is positioned in the reel housing space 40 when the reel cover 10 is closed. The left reel mounting unit 38 has a substantially frustoconical shape. The left reel mounting unit 38 does not rotate relative to the base 34. The left reel mounting unit 38 rotatably supports the reel 30. Furthermore, the left reel mounting unit 38 is biased to the right toward the reel 30 by the biasing force of the biasing spring 48. This causes the left reel mounting unit 38 to be pressed against the reel 30. Therefore, when the reel 30 is rotating, the insertion cylinder portion 42 and the left reel mounting unit 38 are prevented from coming off the reel 30.

[0083] As shown in Figure 1, the rebar tying machine 2 further includes a main power switch 50, a display unit 52, a mode selector switch 54, a tying force increase switch 56, and a tying force decrease switch 58. The main power switch 50, the display unit 52, the mode selector switch 54, the tying force increase switch 56, and the tying force decrease switch 58 are located on the rear surface of the feed unit housing 20. The main power switch 50 is operated by the user. The main power switch 50 switches the rebar tying machine 2 between the ON and OFF states. For example, if the main power switch 50 is a rocker switch, when the main power switch 50 is ON, power is supplied to the rebar tying machine 2 from the battery pack BP (described later), and the rebar tying machine 2 is operational. When the main power switch 50 is OFF, the power supply from the battery pack BP to the rebar tying machine 2 is cut off, and the rebar tying machine 2 is inoperable. The display unit 52 displays information related to the rebar tying machine 2. The display unit 52 is visible to the user.

[0084] The mode selector switch 54 switches the mode of the rebar tying machine 2 between single-shot mode and continuous-shot mode. When the rebar tying machine 2 is in single-shot mode, each time the trigger 24 is pulled in, the rebar tying machine 2 uses the wire W to tie multiple rebars R. When the rebar tying machine 2 is in continuous-shot mode, with the trigger 24 held in the pulled-in state, the rebar tying machine 2 uses the wire W to continuously tie multiple rebars R.

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

[0086] As shown in Figure 2, the rebar tying machine 2 further comprises a feeding unit 60, a guide unit 62, a cutting unit 64, a twisting unit 66, and a control unit 68.

[0087] The feed unit 60 is housed in the feed unit housing 20. The feed unit 60 comprises a feed motor 72 and a feed roller unit 74. The feed motor 72 is, for example, a brushless motor. The feed motor 72 rotates using power supplied from the battery pack BP. The feed roller unit 74 is connected to the feed motor 72 via a reduction gear (not shown). When the feed motor 72 rotates, the feed roller unit 74 rotates. The feed roller unit 74 rotates in the forward direction to pull the wire W out of the bobbin 28 and feed it forward and upward toward the guide unit 62. The feed roller unit 74 also rotates in the reverse direction to pull the wire W back toward the bobbin 28.

[0088] The guide unit 62 is fixed to the front end of the twisting unit housing 14. The guide unit 62 comprises an upper curl guide 78 and a lower curl guide 80. When tying, the reinforcing bar R is positioned between the upper curl guide 78 and the lower curl guide 80. The wire W fed from the feed roller unit 74 is first guided by the upper curl guide 78 and passes through the upper curl guide 78 from rear to front. While the wire W passes through the upper curl guide 78, the upper curl guide 78 imparts a downward curl to the wire W. After passing through the upper curl guide 78, the wire W is guided by the lower curl guide 80 and passes through the lower curl guide 80 from front to rear. After that, the wire W moves to the rear upper side. As a result, the wire W is wound around the reinforcing bar R.

[0089] The cutting unit 64 is housed in the twisting unit housing 14. The cutting unit 64 is equipped with a cutter (not shown) that cuts the wire W that is fed from the feed unit 60 to the guide unit 62. The wire W is cut by the rotation of the cutter.

[0090] The torsion unit 66 is housed in the torsion unit housing 14. The torsion unit 66 comprises a torsion motor 84, a sleeve unit 86, and a gripping clamp 88. The torsion motor 84 is located above the grip portion 16. The torsion motor 84 is, for example, a brushless motor. The torsion motor 84 rotates using power supplied from the battery pack BP. As the torsion motor 84 rotates, the sleeve unit 86 moves in the forward and backward directions, or rotates around a rotation axis that extends in the forward and backward directions. The gripping clamp 88 is located at the front of the torsion unit 66. The gripping clamp 88 grips both ends of the wire W around the reinforcing bar R when the sleeve unit 86 moves forward. From this state, as the sleeve unit 86 rotates further forward, the gripping clamp 88 rotates integrally with the sleeve unit 86. As a result, the gripping clamp 88 twists the wire W. Consequently, the reinforcing bar R is tied together using the wire W. Furthermore, when the sleeve unit 86 rotates in the opposite direction, the wire W is released from the gripping clamp 88, and the sleeve unit 86 moves backward.

[0091] The control unit 68 is housed in the battery mounting section 18. The control unit 68 includes a control circuit board 92 equipped with an MCU (not shown) and a switching element (not shown). When the rebar tying machine 2 switches from the off state to the on state, the control unit 68 controls the feed motor 72 to perform an initialization process to adjust the position of the tip of the wire W. Also, when the rebar tying machine 2 is in the on state and the trigger 24 is pulled by the user, the control unit 68 controls the feed motor 72 and the torsion motor 84 to perform a tying process to tie the rebar R using the wire W.

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

[0093] As shown in Figures 6 to 10, three types of reels 30, namely the first reel 30A, the second reel 30B, and the third reel 30C, are used in the rebar tying machine 2. Hereinafter, the bobbin 28 used in the first reel 30A will be called the first bobbin 28A, the bobbin 28 used in the second reel 30B will be called the second bobbin 28B, and the bobbin 28 used in the third reel 30C will be called the third bobbin 28C.

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

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

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

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

[0098] As shown in Figure 7, the partition 112 is positioned in the internal space 114. The partition 112 has a plate shape. The partition 112 is positioned on a plane that includes the vertical and horizontal directions. The partition 112 is approximately perpendicular to the central axis AX1. The partition 112 is connected to the inner circumferential 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 positioned to the right of the partition 112. The second internal space 118 is positioned to the left 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 Figure 5, the partition 112 faces the bottom wall 46 of the insertion cylinder portion 42. The partition 112 also abuts against the bottom wall 46.

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

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

[0101] As shown in Figure 8, 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 penetrates 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 body portion 110. The left alignment portion 102a is located near the through hole 110c. The end of the wire W passes through the left alignment portion 102a.

[0102] The notch 102b is a hole that penetrates the left flange 102 in the left-right direction. The cross-section of the notch 102b is approximately triangular in shape. The notch 102b is recessed from the outer edge of the left flange 102. The notch 102b cuts the wire W by contacting it after the wire W has been wound onto the first bobbin 28A using a wire winder (not shown). This forms the end of the wire W.

[0103] The right flange portion 104 is provided with 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 body portion 110. The right alignment portion 104a is aligned with the left alignment portion 102a in the left-right direction. The left alignment portion 102a and the right alignment portion 104a receive the wire winder (not shown) when winding the wire W onto the first bobbin 28A. This aligns the wire winder with respect to the first bobbin 28A.

[0104] As shown in Figure 7, the first information unit 106 is located in the first internal space 116. The first information unit 106 is located radially inward of the layer of wire W wound around the body 110. The first information unit 106 is equipped with a first projection 122. The first projection 122 protrudes to the right from the partition 112. In the left-right direction, the tip of the first projection 122 is located closer to the partition 112 than to the receiving portion 115b. This prevents the first projection 122 from contacting the protruding portion 115a when multiple first reels 30A are stacked. The first projection 122 is located on the central axis AX1. The first projection 122 extends in the left-right direction along the central axis AX1. The first projection 122 has a first projection length 124 along the central axis AX1.

[0105] As shown in Figure 9, the second reel 30B comprises a wire W and a second bobbin 28B. The second bobbin 28B comprises a body portion 100, a left flange portion 102, and a right flange portion 104. In addition, the second bobbin 28B is equipped with a second information unit 128 in place of the first information unit 106 of the first bobbin 28A.

[0106] The second information unit 128 is located in the first internal space 116. The second information unit 128 is located radially inward of the layer of wire W wound around the body 110. The second information unit 128 is equipped with a second projection 130. The connection position of the second projection 130 to the partition body 112 is the same as the connection position of the first projection 122 to the partition body 112. Also, the direction in which the second projection 130 extends is the same as the direction in which the first projection 122 extends. In the left-right direction, the tip of the second projection 130 is located closer to the partition body 112 than to the receiving portion 115b. This prevents the second projection 130 from coming into contact with the protruding portion 115a when multiple second reels 30B are stacked. The second projection 130 has a second projection length 132 along the central axis AX1. The second projection length 132 is different from the first projection length 124. The second projection length 132 is longer than the first projection length 124.

[0107] As shown in Figure 10, the third reel 30C comprises a wire W and a third bobbin 28C. The third bobbin 28C comprises a body portion 100, a left flange portion 102, and a right flange portion 104. In addition, the third bobbin 28C is equipped with a third information unit 136 in place of the first information unit 106 of the first bobbin 28A.

[0108] The third information section 136 is located in the first internal space 116. The third information section 136 is located radially inward of the layer of wire W wound around the body 110. The third information section 136 is equipped with a third projection 138. The connection position of the third projection 138 to the partition body 112 is the same as the connection position of the first projection 122 to the partition body 112. Also, the direction in which the third projection 138 extends is the same as the direction in which the first projection 122 extends. In the left-right direction, the tip of the third projection 138 is located closer to the partition body 112 than to the receiving portion 115b. This prevents the third projection 138 from contacting the protruding portion 115a when multiple third reels 30C are stacked. The third projection 138 has a third projection length 140 along the central axis AX1. The third protrusion length 140 is different from both 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. The second protrusion length 132 is type information indicating the type of the second reel 30B. Furthermore, the third protrusion length 140 is type information indicating the type of the third reel 30C.

[0109] As shown in Figure 11, the rebar tying machine 2 further includes a detection unit 150. The detection unit 150 detects the type of 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.

[0110] The movable member 152 comprises a base portion 160 and an operated portion 162. The base portion 160 is made of, for example, a resin material. The base portion 160 is located inside the insertion cylinder portion 42. The base portion 160 has a substantially cylindrical shape. As shown in Figure 12, the base portion 160 has two guide ribs 160a extending in the left-right direction. The base portion 34 also has two rib receiving portions 34a extending in the left-right direction, and the guide ribs 160a are slidably received in the rib receiving portions 34a in the left-right direction. Thus, the base portion 160 is supported by the base portion 34 so as to be movable in the left-right direction. As shown in Figure 11, the base portion 160 has a retaining groove 160b recessed from the right end of the base portion 160, and the base portion 34 of the reel housing portion 22 has a retaining projection 34b protruding to the left. The retaining projection 34b is inserted into the biasing member 154, which is inserted into the retaining groove 160b. The biasing member 154 is sandwiched between the base 34 of the reel housing 22 and the base 160 of the movable member 152. As a result, the base 160 is biased to the left by the biasing member 154. The movable member 152 is in its initial position when no force is applied to the right. When the movable member 152 is in its initial position, the base 160 is in contact with the bottom wall 46 in the left-right direction.

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

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

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

[0114] The circuit board 168 is fixed to the insertion cylinder portion 42. The circuit board 168 is located behind the movable member 152. The circuit board 168 is arranged along a plane that includes the left-right and up-down directions. The circuit board 168 has an opposing surface 168a and a non-opposing surface 168b opposite to the opposing surface 168a. The opposing surface 168a faces the movable member 152 in the front-rear direction. Wiring 169a (see Figure 2) connected to the circuit board 168 is fixed to the non-opposing surface 168b via adhesive 169b. As shown in Figure 2, the wiring 169a passes through the connection point 23 between the battery mounting portion 18 and the reel housing portion 22 and extends to the control unit 68. The circuit board 168 (see Figure 11) is electrically connected to the control unit 68 via the wiring 169a.

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

[0116] The three magnetic sensors 170 comprise a first magnetic sensor 170a, a second magnetic sensor 170b, and a third magnetic sensor 170c. The second magnetic sensor 170b is positioned to the right of the first magnetic sensor 170a. The third magnetic sensor 170c is positioned to the right of the second magnetic sensor 170b. When the movable member 152 is in its initial position, the magnet 166 is positioned 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 facing the magnet 166 in the front-rear direction. When the movable member 152 is in its initial position, the distance between the first magnetic sensor 170a and the magnet 166 in the left-right direction is approximately the same as the first protruding length 124 of the first projection 122. When the movable member 152 is in its initial position, the distance between the second magnetic sensor 170b and the magnet 166 in the left-right direction is approximately the same as the second protruding length 132 of the second projection 130. When the movable member 152 is in its initial position, the distance between the third magnetic sensor 170c and the magnet 166 in the left-right direction is approximately the same as the third protruding length 140 of the third projection 138.

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

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

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

[0120] When the rebar tying machine 2 switches from the off state to the on state, the control unit 68 executes the process shown in Figure 16.

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

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

[0123] In S6, the control unit 68 controls the feed motor 72 to perform an initialization process to adjust the position of the tip of the wire W. Specifically, the control unit 68 operates the feed motor 72 for a predetermined number of rotations to rotate the feed roller unit 74 in the forward direction, thereby pulling the wire W out from the bobbin 28. Next, the control unit 68 operates the twist motor 84 to move the sleeve unit 86 backward, causing the sleeve unit 86 to operate the cutting unit 64. As a result, the wire W is cut. Next, the control unit 68 operates the twist motor 84 to return the sleeve unit 86 to its initial position. Next, the control unit 68 operates the feed motor 72 for a predetermined number of rotations to rotate the feed roller unit 74 in the reverse direction, thereby pulling the wire W back towards the bobbin 28.

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

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

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

[0127] In S14, the control unit 68 controls the feed motor 72 and the torsion motor 84 to perform a binding process that ties the reinforcing bars R with wire W. Specifically, first, the control unit 68 controls the detector 156 and detects the type of reel 30 based on the signal received from the detector 156. Next, the control unit 68 sets the conditions for the binding process based on the detected type of reel 30, such as the number of rotations of the feed motor 72, the upper limit of the torque of the feed motor 72, and the upper limit of the torque of the torsion motor 84. 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. This feeds out the wire W, and the wire W is wound around the reinforcing bars R. Next, the control unit 68 operates the torsion motor 84 to move the sleeve unit 86 forward. This causes the tip of the wire W to be gripped by the gripping clamp 88. Next, the control unit 68 operates the feed motor 72 based on the set upper torque limit of the feed motor 72, rotating the feed roller unit 74 in the reverse direction. This pulls the wire W back, causing it to shrink in diameter and come into contact with the reinforcing bar R. Next, the control unit 68 operates the twist motor 84, moving the sleeve unit 86 forward. This causes the wire W to be gripped by the gripping clamp 88 between the upper curl guide 78 and the cutting unit 64. Next, the control unit 68 operates the twist motor 84, moving the sleeve unit 86 further forward. The wire W is cut by the cutting unit 64 as the twist unit 66 operates the cutting unit 64. Next, the control unit 68 operates the twist motor 84 based on the set upper torque limit of the twist motor 84, rotating the sleeve unit 86 forward. The wire W is twisted as the gripping clamp 88 rotates. Finally, the control unit 68 operates the torsion motor 84 to release the wire W from the gripping clamp 88 and return the torsion unit 66 to its initial position.

[0128] In S16, the control unit 68 determines whether the rebar tying machine 2 is in the off state. If the rebar tying machine 2 is not in the off state (NO in S16), the control unit 68 returns to S8. On the other hand, if the rebar tying machine 2 is in the off state (YES in S16), the control unit 68 terminates the process shown in Figure 16.

[0129] Alternatively, when the rebar tying machine 2 switches from the off state to the on state, the control unit 68 may execute the process shown in Figure 35 instead of the process shown in Figure 16.

[0130] In S22, the control unit 68 performs type determination processing (see Figure 36). The type determination processing will be described below with reference to Figure 36.

[0131] In S42, the control unit 68 acquires 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.

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

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

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

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

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

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

[0138] If it is determined that no error occurred in S24 (i.e., NO), the process proceeds to S28. In S28, the control unit 68 performs the same initialization process as in S6 in Figure 16. After S28, the process proceeds to S30.

[0139] In S30, the control unit 68 determines whether the rebar tying machine 2 has turned off. If the rebar tying machine 2 is turned off (YES), the process shown in Figure 35 ends. If the rebar tying machine 2 remains on (NO), the process proceeds to S32.

[0140] In S32, the control unit 68 performs the same type determination process as in S22 (see Figure 36) again.

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

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

[0143] In S40, the control unit 68 performs a binding process similar to that in S14 in Figure 16, based on the control parameters set in the type determination process in S32 (see S56 in Figure 36). After S40, the process returns to S30.

[0144] As shown in Figure 37, the type determination process in S32 and the process in S34 that determines whether or not an error has occurred may be executed after it is determined in S38 that the trigger 24 has been pulled (after the result is YES) and before the bundling process is executed in S40.

[0145] (effect) The rebar tying machine 2 of this embodiment includes a reel 30 having a bobbin 28 and wire W wound around the bobbin 28, a right reel mounting unit 36 ​​(an example of a reel mounting unit) to which the reel 30 is attached, a feeding unit 60 for feeding the wire W wound around the bobbin 28, a guide unit 62 for guiding the wire W around the rebar R, a twisting unit 66 for twisting the wire W around the rebar R, and a detection unit 150 for detecting the type of reel 30. The bobbin 28 is a body portion 100 around which the wire W is wound, and includes a body portion 100 having a first internal space 116 into which the right reel mounting unit 36 ​​is inserted, and information units 106, 128, and 136 that hold type information indicating the type of reel 30. The detection unit 150 is located in the first internal space 116 when the reel 30 is attached to the right reel mounting unit 36.

[0146] According to the above configuration, the detection unit 150 is positioned in the first internal space 116 of the reel 30 when the reel 30 is attached to the right reel mounting unit 36. Therefore, compared to a configuration in which the detection unit 150 is not positioned in the first internal space 116 of the reel 30 when the reel 30 is attached to the right reel mounting unit 36, it is possible to suppress an increase in the size of the rebar tying machine 2.

[0147] Furthermore, the information units 106, 128, and 136 are equipped with protrusions 122, 130, and 138 that extend from the body 100. The protrusions 122, 130, and 138 have different protrusion lengths 124, 132, and 140 depending on the type of reel 30. The protrusion lengths 124, 132, and 140 represent the type information.

[0148] According to the above configuration, the protruding lengths 124, 132, and 140 of the protrusions 122, 130, and 138 differ depending on the type of reel 30. The easy configuration to change the protruding lengths 124, 132, and 140 allows for differentiation of the reel 30 types while suppressing an increase in the number of protrusions 122, 130, and 138. This prevents the structure of the reel 30 from becoming overly complex.

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

[0150] With the above configuration, it is possible to suppress an increase in the size of the reel 30 compared to a configuration in which the protrusions 122, 130, and 138 are not arranged in the first internal space 116.

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

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

[0153] Alternatively, when the reel 30 is attached to the right reel mounting unit 36, it rotates around the central axis AX1. The projections 122, 130, and 138 are located on the central axis AX1 and extend along the central axis AX1.

[0154] According to the above configuration, when the reel 30 rotates, it is possible to suppress changes in the positions of the projections 122, 130, and 138 relative to the central axis AX1.

[0155] Furthermore, the detection unit 150 is initially positioned when the right reel mounting unit 36 ​​is not inserted into the first internal space 116, and includes a movable member 152 that is pressed by the protrusions 122, 130, and 138 and moves from its initial position when the right reel mounting unit 36 ​​is inserted into the first internal space 116, and a detector 156 that detects the position of the movable member 152.

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

[0157] Furthermore, the right reel mounting unit 36 ​​includes an insertion cylinder portion 42 that is inserted into the first internal space 116. The detector 156 is located inside the insertion cylinder portion 42.

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

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

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

[0161] Furthermore, the detection unit 150 also includes a biasing member 154 that biases the movable member 152 to its initial position.

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

[0163] Additionally, the bobbin 28 rotates around the right reel mounting unit 36.

[0164] In a configuration where the bobbin 28 rotates together with the right reel mounting unit 36, a configuration is required to rotate the right reel mounting unit 36. This complicates the configuration of the rebar tying machine 2. With the above configuration, the complexity of the rebar tying machine 2 can be suppressed compared to a configuration where the bobbin 28 rotates together with the right reel mounting unit 36.

[0165] Furthermore, the hardness of the right reel mounting unit 36 ​​is higher than that of the bobbin 28.

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

[0167] Furthermore, the detection unit 150 includes an operated portion 162 (an example of a contact portion) that contacts the bobbin 28 when the reel 30 is attached to the right reel mounting unit 36. The hardness of the operated portion 162 is higher than the hardness of the bobbin 28.

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

[0169] Furthermore, the rebar tying machine 2 is further equipped with a control unit 68 that controls the feeding unit 60 and the twisting unit 66 to perform a tying process in which the rebars R are tied together using wire W. During the tying process, the control unit 68 detects the type of reel 30 using a detection unit 150.

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

[0171] The rebar tying machine 2 of this embodiment includes a reel 30 having a bobbin 28 and wire W wound around the bobbin 28, a right reel mounting unit 36 ​​(an example of a reel mounting unit) to which the reel 30 is attached, a feeding unit 60 that feeds the wire W wound around the bobbin 28, a guiding unit 62 that guides the wire W around the rebar R, a twisting unit 66 that twists the wire W around the rebar R, and a detection unit 150 that detects the type of reel 30. The bobbin 28 has protrusions 122, 130, and 138 having different protrusion lengths 124, 132, and 140 depending on the type of reel 30. The detection unit 150 detects the type of reel 30 based on the protrusion lengths 124, 132, and 140 of the protrusions 122, 130, and 138.

[0172] According to the above configuration, the protruding lengths 124, 132, and 140 of the protrusions 122, 130, and 138 differ depending on the type of reel 30. The easy configuration to change the protruding lengths 124, 132, and 140 allows for differentiation of the reel 30 types while suppressing an increase in the number of protrusions 122, 130, and 138. This prevents the structure of the reel 30 from becoming overly complex.

[0173] The rebar tying machine 2 of this embodiment includes a right reel mounting unit 36 ​​(reel mounting unit) to which a first reel 30A having a first projection 122 with a first projection length 124 and a wire W, and a second reel 30B having a second projection 130 with a second projection length 132 and a wire W can be selectively attached, a feeding unit 60 for feeding the wire W, a guiding unit 62 for guiding the wire W around the rebar R, a twisting unit 66 for twisting the wire W around the rebar R, and a detection unit 150 capable of detecting the first projection 122 or the second projection 130.

[0174] According to the above configuration, the protruding lengths 124 and 132 of the protrusions 122 and 130 differ depending on the type of reel 30. The easy configuration that allows for changing the protruding lengths 124 and 132 allows for differentiation of the reel 30 types while suppressing an increase in the number of protrusions 122 and 130. This prevents the structure of the reel 30 from becoming overly complex.

[0175] The reel 30 in this embodiment is used in a rebar tying machine 2. The reel 30 comprises a bobbin 28 and a wire W wound around the bobbin 28. The rebar tying machine 2 comprises a right reel mounting unit 36 ​​(an example of a reel mounting unit) to which the reel 30 is attached, a feeding unit 60 that feeds the wire W wound around the bobbin 28, a guide unit 62 that guides the wire W around the rebar R, a twisting unit 66 that twists the wire W around the rebar R, and a detection unit 150 that detects the type of reel 30. The bobbin 28 comprises an information unit 106, 128, 136 that holds type information indicating the type of reel 30, and a body portion 100 around which the wire W is wound, into which the right reel mounting unit 36 ​​is inserted and which has a first internal space 116 in which the detection unit 150 is positioned when the right reel mounting unit 36 ​​is inserted.

[0176] According to the above configuration, the detection unit 150 is positioned in the first internal space 116 of the reel 30 when the reel 30 is attached to the right reel mounting unit 36. Therefore, compared to a configuration in which the detection unit 150 is not positioned in the first internal space 116 of the reel 30 when the reel 30 is attached to the right reel mounting unit 36, it is possible to suppress an increase in the size of the rebar tying machine 2.

[0177] Furthermore, information units 106, 128, and 136 are located in the first internal space 116.

[0178] The above configuration makes it possible to suppress the increase in size of the reel 30.

[0179] The reel 30 in this embodiment is used in a rebar tying machine 2. The reel 30 comprises a bobbin 28 and a wire W wound around the bobbin 28. The rebar tying machine 2 comprises a right reel mounting unit 36 ​​(an example of a reel mounting unit) to which the reel 30 is attached, a feeding unit 60 that feeds the wire W wound around the bobbin 28, a guiding unit 62 that guides the wire W around the rebar R, a twisting unit 66 that twists the wire W around the rebar R, and a detection unit 150 that detects the type of reel 30. The bobbin 28 has different protrusion lengths 124, 132, and 140 depending on the type of reel 30, and has protrusions 122, 130, and 138 that allow the detection unit 150 to detect the type of reel 30 based on the protrusion lengths 124, 132, and 140.

[0180] According to the above configuration, the protruding lengths 124, 132, and 140 of the protrusions 122, 130, and 138 differ depending on the type of reel 30. The easy configuration to change the protruding lengths 124, 132, and 140 allows for differentiation of the reel 30 types while suppressing an increase in the number of protrusions 122, 130, and 138. This prevents the structure of the reel 30 from becoming overly complex.

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

[0182] According to the above configuration, the protruding lengths 124, 132, and 140 of the protrusions 122, 130, and 138 differ depending on the type of reel 30. The easy configuration to change the protruding lengths 124, 132, and 140 allows for differentiation of the reel 30 types while suppressing an increase in the number of protrusions 122, 130, and 138. This prevents the structure of the reel 30 from becoming overly complex.

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

[0184] With the above configuration, when the signal received from the detection unit 150 changes while the rebar tying machine 2 is in the ON state, for example, when the reel 30 is removed from the right reel mounting unit 36 ​​while the rebar tying machine 2 is in the ON state, the display unit 52 notifies the user of error information. This allows the user to recognize the error information. Therefore, it is possible to prevent the user from reattaching the reel 30 to the right reel mounting unit 36 ​​and tying the rebar R using the rebar tying machine 2 without positioning the end of the wire W in the correct position.

[0185] The rebar tying machine 2 of this embodiment includes a right reel mounting unit 36 ​​(an example of a reel mounting unit) to which a reel 30 comprising a bobbin 28 and wire W wound around the bobbin 28 is attached; a detection unit 150 for detecting the type of reel 30; a main power switch 50 for switching the rebar tying machine 2 between on and off states; a control unit 68 (an example of a signal receiving unit) for receiving a signal regarding the type of reel 30 from the detection unit 150; and a display unit 52 (an example of a notification unit) for notifying error information when the signal received by the control unit 68 changes while the rebar tying machine 2 is in the on state.

[0186] With the above configuration, the user can be prevented from performing the binding of reinforcing bars R using the reinforcing bar tying machine 2 by recognizing the error information.

[0187] The rebar tying machine 2 of this embodiment includes a reel 30 having a bobbin 28 and wire W wound around the bobbin 28, a right reel mounting unit 36 ​​(an example of a reel mounting unit) to which the reel 30 is attached, a feeding unit 60 that feeds the wire W wound around the bobbin 28, a guide unit 62 that guides the wire W around the rebar R, a twisting unit 66 that twists the wire W around the rebar R, a detection unit 150 that detects the type of reel 30, and a control unit 68 that controls the feeding unit 60 and the twisting unit 66 to perform a tying process in which the rebar R is tied using the wire W. The control unit 68 detects the type of reel 30 using the detection unit 150 when the rebar tying machine 2 switches from the off state to the on state.

[0188] With the above configuration, the type of reel 30 can be detected after the rebar tying machine 2 switches from the off state to the on state, but before the tying process is performed.

[0189] The rebar tying machine 2 of this embodiment includes a reel 30 having a bobbin 28 and wire W wound around the bobbin 28, a right reel mounting unit 36 ​​(an example of a reel mounting unit) to which the reel 30 is attached, a feeding unit 60 that feeds the wire W wound around the bobbin 28, a guide unit 62 that guides the wire W around the rebar R, a twisting unit 66 that twists the wire W around the rebar R, a detection unit 150 that detects the type of reel 30, a trigger 24 (an example of an operating member), and a control unit 68 that, when the trigger 24 is operated, controls the feeding unit 60 and the twisting unit 66 to execute a tying process to tie the rebar R with the wire W. The control unit 68 detects the type of reel 30 by the detection unit 150 when the rebar tying machine 2 is ON, after the trigger 24 has been operated, but before the tying process is executed.

[0190] With the above configuration, the type of reel 30 can be detected after the trigger 24 is operated but before the bundling process is performed.

[0191] The rebar tying machine 2 of this embodiment includes a reel 30 having a bobbin 28 and wire W wound around the bobbin 28, a right reel mounting unit 36 ​​(an example of a reel mounting unit) to which the reel 30 is attached, a feeding unit 60 that feeds the wire W wound around the bobbin 28, a guide unit 62 that guides the wire W around the rebar R, a twisting unit 66 that twists the wire W around the rebar R, a detection unit 150 that detects the type of reel 30, a trigger 24 (an example of an operating member), and a control unit 68 that, when the trigger 24 is operated, controls the feeding unit 60 and the twisting unit 66 to execute a tying process to tie the rebar R with the wire W. The control unit 68 detects the type of reel 30 by the detection unit 150 when the rebar tying machine 2 is in the ON state, after the tying process has been executed, and before the trigger 24 is operated again.

[0192] With the above configuration, the type of reel 30 can be detected after the bundling process is performed and before the trigger 24 is operated to perform the bundling process again.

[0193] (Second example) The second embodiment will describe the differences from the first embodiment. As shown in Figure 17, the first information section 106 of the first reel 30A is equipped with a first rib 222 instead of the first projection 122. The first rib 222 protrudes to the right from the partition body 112. The first rib 222 has a substantially annular shape. As shown in Figure 18, the center of the annulus of the first rib 222 is located on the central axis AX1. In the left-right direction, the tip of the first rib 222 is located on the partition body 112 side of the receiving section 115b. This prevents the first rib 222 from coming into contact with the projection 115a when multiple first reels 30A are stacked. The first rib 222 has a first projection length 224 along the central axis AX1.

[0194] As shown in Figure 19, the second information section 128 of the second reel 30B includes a first rib 222 and a second rib 230 in place of the second projection 130. The configuration of the first rib 222 of the second reel 30B is the same as that of the first rib 222 of the first reel 30A.

[0195] The second rib 230 protrudes to the right from the partition 112. The second rib 230 has a substantially annular shape. The center of the annulus of the second rib 230 is located on the central axis AX1. The second rib 230 is further from the central axis AX1 than the first rib 222. The second rib 230 surrounds the first rib 222. In the left-right direction, the tip of the second rib 230 is located on the partition 112 side than the receiving portion 115b. This prevents the second rib 230 from coming into contact with the protrusion 115a when multiple 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.

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

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

[0198] The connecting cylinder portion 246 has a frustoconical shape that extends in the left-right direction. One end of the connecting cylinder portion 246 is connected to the other end of the large-diameter cylinder portion 244.

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

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

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

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

[0203] One end of the first operated portion 284 is connected to the other end of the first base portion 282. The first operated portion 284 penetrates the through hole 248a when the first movable member 270 is in its initial position. The first operated portion 284 is provided with a first inclined surface 286. The first inclined surface 286 is located outside the small diameter cylindrical portion 248 when the first movable member 270 is in its initial position. The first inclined surface 286 is inclined so as to move away from the central axis AX1 from the left end to the right end.

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

[0205] One end of the second operated portion 292 is connected to the other end of the second base portion 290. The second operated portion 292 penetrates the through hole 244a when the second movable member 274 is in its initial position. The second operated portion 292 is provided with a second inclined surface 294. The second inclined surface 294 is located outside the large-diameter cylindrical portion 244 when the second movable member 274 is in its initial position. The second inclined surface 294 is inclined so as to move away from the central axis AX1 from the left end to the right end.

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

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

[0208] The substrate 300 is located inside the connecting cylinder portion 246. The substrate 300 is positioned along a plane that does not include the vertical and horizontal directions. The substrate 300 has a first opposing surface 300a and a second opposing surface 300b opposite to the first opposing surface 300a. The first opposing surface 300a faces the first movable member 270 in the left-right direction. The second opposing surface 300b faces the second movable member 274 in the left-right direction.

[0209] The two magnetic sensors 302 comprise 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 in its initial position, the first magnetic sensor 302a is positioned in front of the first magnet 298a. At this time, the first magnetic sensor 302a is not facing the first magnet 298a in the left-right direction.

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

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

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

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

[0214] (Third embodiment) The following describes the differences between the third embodiment and the first embodiment. As shown in Figure 25, in this embodiment, the bobbin 28 of the reel 30 comprises a bobbin member 402 and an information member 404 which is a separate part from the bobbin member 402. Of these, the bobbin member 402 has a common shape and is used for the first bobbin 28A, the second bobbin 28B, and the third bobbin 28C. The information member 404 has a different shape and is used for the first bobbin 28A, the second bobbin 28B, and the third bobbin 28C. That is, the first information member 404A is used for the first bobbin 28A, the second information member 404B is used for the second bobbin 28B, and the third information member 404C is used for the third bobbin 28C. The bobbin member 402 and the information member 404 may be made of the same material or different materials. For example, the bobbin member 402 may be made of a resin material, and the information member 404 may be made of a resin material with higher hardness. Alternatively, the bobbin member 402 may be made of a resin material, and the information member 404 may be made of a metal material.

[0215] As shown in Figure 26, the bobbin member 402 comprises a body portion 100, a left flange portion 102, and a right flange portion 104. The body portion 100 comprises a body body main body 110 and a partition body 112. The partition body 112 comprises a partition plate 406 which is substantially flat in shape. A through hole 406a is formed in the center of the partition plate 406. As shown in Figure 27, an engaging projection 406b is formed on the left side surface of the partition plate 406, projecting to the left at the periphery of the through hole 406a. As shown in Figure 28, an engaging recess 406c is formed on the right side surface of the partition plate 406, recessing to the left at the periphery of the through hole 406a.

[0216] As shown in Figure 29, the information member 404 comprises a flange portion 408, a projection 410, a pair of guide portions 412, and a pair of engaging claw portions 414. The flange portion 408 is formed in a substantially disc shape with a pair of notches 408a. The projection 410 protrudes to the right from the flange portion 408. The pair of guide portions 412 and the pair of engaging claw portions 414 protrude to the left from the flange portion 408. The pair of engaging claw portions 414 are positioned corresponding to the pair of notches 408a.

[0217] As shown in Figure 28, when attaching the information member 404 to the bobbin member 402, the pair of guide portions 412 and the pair of engaging claw portions 414 are inserted into the through hole 406a from the right side of the partition plate 406. As a result, as shown in Figure 26, the flange portion 408 abuts against the engaging recess 406c, and the tips of the pair of engaging claw portions 414 engage with the engaging projection 406b, thereby attaching the information member 404 to the bobbin member 402. When removing the information member 404 from the bobbin member 402, the tips of the pair of engaging claw portions 414 are disengaged from the engaging projection 406b, and the pair of guide portions 412 and the pair of engaging claw portions 414 are pulled out of the through hole 406a toward the right side of the partition plate 406. This removes the information member 404 from the bobbin member 402.

[0218] 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 a common shape, while the projections 410 have different shapes. Specifically, the projection 410 of the first information member 404A corresponds to the first projection 122 having a first projection length 124 along the central axis AX1, and corresponds to the first information section 106. The projection 410 of the second information member 404B corresponds to the second projection 130 having a second projection length 132 along the central axis AX1, and corresponds to the second information section 128. The projection 410 of the third information member 404C corresponds to the third projection 138 having a third projection length 140 along the central axis AX1, and corresponds to the third information section 136.

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

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

[0221] In the rebar tying machine 2 of this embodiment, the reels 30 (first reel 30A, second reel 30B, third reel 30C) rotate around the central axis AX1 when attached to the right reel mounting unit 36 ​​(example of a reel mounting unit). The information units 106, 128, and 136 are positioned on the central axis AX1 within the first internal space 116 and are equipped with projections 410 (first projection 122, second projection 130, third projection 138) (example of projections) that extend along the central axis AX1. The projections 410 (first projection 122, second projection 130, third projection 138) have different projection lengths (first projection length 124, second projection length 132, third projection length 140) depending on the type of reel 30 (first reel 30A, second reel 30B, third reel 30C). The protrusion lengths (first protrusion length 124, second protrusion length 132, third protrusion length 140) are type information.

[0222] With the above configuration, the type of reel 30 can be distinguished by an easy configuration that changes the protruding length of the projection 410. In addition, it is possible to suppress the change in the position of the projection 410 relative to the central axis AX1 when the reel 30 rotates.

[0223] In the rebar tying machine 2 of this embodiment, the information member 404 is fixed to the bobbin member 402 by the engagement of the tips of a pair of engaging claws 414 with engaging projections 406b, thereby preventing it from coming loose.

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

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

[0226] If the through hole 406a is not formed in the bobbin member 402, it will be difficult to secure the information member 404 to the bobbin member 402 in a way that prevents it from coming loose. With the above configuration, the information member 404 can be secured to the bobbin member 402 in a way that prevents it from coming loose by utilizing the through hole 406a formed in the bobbin member 402 with a simple configuration.

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

[0228] With the above configuration, the process of attaching the information member 404 to the bobbin member 402 and removing the information member 404 from the bobbin member 402 can be made easier.

[0229] (Fourth embodiment) The following describes the differences between the fourth embodiment and the first embodiment. As shown in Figure 30, in this embodiment, the bobbin 28 of the reel 30 comprises a bobbin member 502 and an information member 504, which is a separate component from the bobbin member 502. Of these, the bobbin member 502 has a common shape and is used for the first bobbin 28A, the second bobbin 28B, and the third bobbin 28C. The information member 504 has a different shape and is used for the first bobbin 28A, the second bobbin 28B, and the third bobbin 28C. That is, the first information member 504A is used for the first bobbin 28A, the second information member 504B is used for the second bobbin 28B, and the third information member 504C is used for the third bobbin 28C. The bobbin member 502 and the information member 504 may be made of the same material or different materials. For example, the bobbin member 502 may be made of a resin material, and the information member 504 may be made of a resin material with higher hardness. Alternatively, the bobbin member 502 may be made of a resin material, and the information member 504 may be made of a metal material.

[0230] As shown in Figure 31, the bobbin member 502 comprises a body portion 100, a left flange portion 102, and a right flange portion 104. The body portion 100 comprises a body body main body 110 and a partition body 112. The partition body 112 comprises a partition plate 506 which is substantially flat in shape. A through hole 506a is formed in the center of the partition plate 506. As shown in Figure 32, the left side surface of the partition plate 506 has a support projection 506b that protrudes to the left at the periphery of the through hole 506a, an anti-rotation portion 506c provided inside the support projection 506b, and an engaging portion 506d provided inside the support projection 506b and to the left of the anti-rotation portion 506c.

[0231] The information member 504 comprises a flange portion 508, a projection 510, and a handle portion 512. The flange portion 508 is formed in a substantially disc shape with a pair of notches 508a. The projection 510 protrudes to the right from the flange portion 508. The handle portion 512 protrudes to the left from the flange portion 508. The handle portion 512 has a substantially flat shape along the longitudinal direction of the flange portion 508.

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

[0233] In the first information member 504A, the second information member 504B, and the third information member 504C, the flange portion 508 and the knob portion 512 have a common shape, while the projections 510 have different shapes. Specifically, the projection 510 of the first information member 504A corresponds to the first projection 122 having a first projection length 124 along the central axis AX1, and corresponds to the first information section 106. The projection 510 of the second information member 504B corresponds to the second projection 130 having a second projection length 132 along the central axis AX1, and corresponds to the second information section 128. The projection 510 of the third information member 504C corresponds to the third projection 138 having a third projection length 140 along the central axis AX1, and corresponds to the third information section 136.

[0234] Furthermore, the left reel mounting unit 38 shown in Figure 30 may be provided with a contact member (not shown) that contacts the knob portion 512 in order to prevent the information member 504 from falling off the bobbin member 502.

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

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

[0237] In the rebar tying machine 2 of this embodiment, the reels 30 (first reel 30A, second reel 30B, third reel 30C) rotate around the central axis AX1 when attached to the right reel mounting unit 36 ​​(example of a reel mounting unit). The information units 106, 128, and 136 are located on the central axis AX1 within the first internal space 116 and are equipped with projections 510 (first projection 122, second projection 130, third projection 138) (example of projections) that extend along the central axis AX1. The projections 510 (first projection 122, second projection 130, third projection 138) have different projection lengths (first projection length 124, second projection length 132, third projection length 140) depending on the type of reel 30 (first reel 30A, second reel 30B, third reel 30C). The protrusion lengths (first protrusion length 124, second protrusion length 132, third protrusion length 140) are type information.

[0238] With the above configuration, the type of reel 30 can be distinguished by an easy configuration that changes the protruding length of the projection 510. In addition, it is possible to suppress the change in the position of the projection 510 relative to the central axis AX1 when the reel 30 rotates.

[0239] In the rebar tying machine 2 of this embodiment, the information member 504 is fixed to the bobbin member 502 by the flange portion 508 engaging with the engagement portion 506d, thereby preventing it from coming loose.

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

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

[0242] If the through hole 506a is not formed in the bobbin member 502, it will be difficult to secure the information member 504 to the bobbin member 502 in a way that prevents it from coming loose. With the above configuration, the information member 504 can be secured to the bobbin member 502 in a way that prevents it from coming loose by utilizing the through hole 506a formed in the bobbin member 502 with a simple configuration.

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

[0244] With the above configuration, the process of attaching the information member 504 to the bobbin member 502 and removing the information member 504 from the bobbin member 502 can be made easier.

[0245] (modified version) In one embodiment, the information units 106, 128, and 136 shown in Figures 7, 9, and 10 may protrude from the inner circumferential surface 110b of the body 110.

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

[0247] In one embodiment, the detector 156 shown in Figure 11, etc., may include sensors other than the magnetic sensors 170 and 302, such as sensors that detect the distance to the protrusions 122, 130, and 138.

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

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

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

[0251] In one embodiment, the rebar tying machine 2 may be equipped with a power cord that can be connected to an external power source instead of the battery pack BP shown in Figure 1. In this case, the rebar tying machine 2 operates using power supplied from an external power source via the power cord.

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

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

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

[0255] In one embodiment, the main power switch 50 may be a tact switch. In this case, when the main power switch 50 is pressed while the control power supply (not shown) of the control unit 68 is off, a power supply path is formed from the battery pack BP to the control unit 68, the control power supply turns on, the MCU (not shown) starts up, and the rebar tying machine 2 turns on. After starting up, the MCU switches a semiconductor switch (not shown) that maintains the power supply path from the battery pack BP to the control unit 68 from off to on, so that the rebar tying machine 2 remains on even after releasing the main power switch 50. In this state, when the main power switch 50 is pressed again, the MCU switches the semiconductor switch from on to off, interrupting the power supply from the battery pack BP to the control unit 68, the control power supply turns off, and the rebar tying machine 2 turns off.

[0256] In one embodiment, the rebar tying machine 2 does not need to be equipped with a main power switch 50. In this case, the rebar tying machine 2 may switch from the off state to the on state when the battery pack BP is attached to the battery mounting section 18 or when power is supplied from an external power source via the power cord, and the rebar tying machine 2 may switch from the on state to the off state when the battery pack BP is removed from the battery mounting section 18 or when the power supply from an external power source via the power cord is interrupted.

[0257] In one embodiment, the initialization process in S6 of Figure 16 may be performed after it is determined that the trigger 24 is engaged in the first S12 (after it is determined that the trigger 24 is engaged in the first S12), rather than after it is determined that the magnet detection signal is received in S2 (after it is determined that the trigger 24 is engaged in the first S38 (after it is determined that the trigger 24 is engaged in the first S38), rather than after it is determined that no error has occurred in S24 (after it is determined that the trigger 24 is engaged in the first S38 (after it is determined that the trigger 24 is engaged in the first S38).

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

[0259] In one embodiment, the types of reels 30 may be distinguished according to the year of manufacture of the wire W (or the year of manufacture of the bobbin 28), regardless of whether the specifications of the wire W or the bobbin 28 are the same or different. In this case, for example, the control unit 68 may determine that reels 30 with a newer year of manufacture of the wire W (or bobbin 28) can be used normally in the rebar tying machine 2, and that reels 30 with an older year of manufacture of the wire W (or bobbin 28) cannot be used in the rebar tying machine 2. Alternatively, the types of reels 30 may be distinguished according to the manufacturing region and / or sales region of the reels 30. In this case, for example, the control unit 68 may determine that a reel 30 can be used normally in the rebar tying machine 2 if its sales region coincides with the sales region of the rebar tying machine 2, and that a reel 30 cannot be used in the rebar tying machine 2 if its sales region does not coincide with the sales region of the rebar tying machine 2.

[0260] In one embodiment, the process of determining the type of the reel 30 performed by the control unit 68 (for example, the type determination process in FIG. 36) may be performed at a timing different from that of the above-described embodiment. For example, the control unit 68 may execute the process of determining the type of the reel 30 at a random timing until a predetermined time (for example, 5 seconds) elapses from the time when the steel bar bundling machine 2 is switched from the off state to the on state (for example, the time when the main power switch 50 is switched from off to on, or the time when the battery pack BP is attached to the battery attachment portion 18). Alternatively, the control unit 68 may execute the process of determining the type of the reel 30 at a timing when a predetermined time (for example, 10 minutes) has elapsed after the completion of the bundling process of S14 in FIG. 16 (or S40 in FIGS. 35 and 37). Alternatively, the control unit 68 may periodically execute the process of determining the type of the reel 30 every time a predetermined time (for example, 5 minutes) elapses. Alternatively, the control unit 68 may execute the process of determining the type of the reel 30 at a timing when a predetermined time (for example, 1 second) has elapsed from the time when the steel bar bundling machine 2 is switched from the off state to the on state.

Description of Signs

[0261] 2: Steel bar bundling machine 10: Reel cover 22: Reel housing portion 24: Trigger 28: Bobbin 28A: First bobbin 28B: Second bobbin 28C: Third bobbin 30: Reel 30A: First reel 30B: Second reel 30C: Third reel 36: Right reel mounting unit 42: Insertion cylinder portion 44: Cylinder portion 46: Bottom wall portion 46a: Through hole 50: Main power switch 52: Display portion 60: Feeding unit 62: Guidance unit 64: Cutting unit 66: Twisting unit 68: Control unit 100: Barrel part 102: Left flange part 104: Right flange part 106: First information part 110: Barrel body 110a: Outer peripheral surface 110b: Inner peripheral surface 112: Partition body 114: Internal space 116: First internal space 118: Second internal space 122: First protrusion 124: First protrusion length 128: Second information part 130: Second protrusion 132: Second protrusion length 136: Third information part 138: Third protrusion 140: Third protrusion length 150: Detection unit 152: Movable member 154: Biasing member 156: Detector 162: Operated part 170: Magnetic sensor 170a: First magnetic sensor 170b: Second magnetic sensor 170c: Third magnetic sensor 222: First rib 224: First protrusion length 230: Second rib 232: Second protrusion length 270: First movable member 272: First biasing member 274: Second movable member 276: Second biasing member 278: Detector 298: Magnet 298a: First magnet 298b: Second Magnet 302: Magnetic Sensor 302a: First Magnetic Sensor 302b: Second Magnetic Sensor 402: Bobbin Member 404: Information Member 404A: First Information Member 404B: Second Information Member 404C: Third Information Member 406: Partition Plate 406a: Through-Hole 406b: Engaging Projection 406c: Engaging Recess 408: Flange Portion 408a: Notch 410: Protrusion 412: Guide Portion 414: Engaging Claw Portion [[ID=,36]]502: Bobbin Member 504: Information Member 504A: First Information Member 504B: Second Information Member 504C: Third Information Member 506: Partition Plate 506a: Through-Hole 506b: Support Projection 506c: Anti-Rotation Portion 506d: Engaging Portion 508: Flange Portion 508a: Notch 510: Protrusion 512: Knob Portion AX1: Central Axis BP: Battery Pack R: Rebar W: Wire

Claims

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

2. The information unit is equipped with a projection that protrudes from the body portion, The protruding length of the aforementioned projection indicates the type information. The rebar tying machine according to claim 1, wherein the detection unit detects the type of the reel based on the protruding length.

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

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

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

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

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

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

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

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

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

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

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

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

15. A main power switch for switching the rebar tying machine between an ON state and an OFF state, An alarm unit that broadcasts error information, The system further comprises a control unit that controls the feed unit, the twisting unit, and the notification unit, and receives a signal from the detection unit regarding the type of the reel, The rebar tying machine according to claim 1, wherein the control unit controls the notification unit when the signal received from the detection unit changes while the rebar tying machine is in the ON state.

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

17. When the reel is attached to the reel mounting unit, it rotates around its central axis. The information unit is located on the central axis within the first internal space and includes a projection extending along the central axis. The protruding length of the aforementioned projection indicates the type information. The rebar tying machine according to claim 16, wherein the detection unit detects the type of the reel based on the protruding length.

18. The rebar tying machine according to claim 16, wherein the first member is fixed to the second member with a retaining mechanism.

19. The second member has a through hole formed in it. The rebar tying machine according to claim 18, wherein the first member penetrates the through hole.

20. The rebar tying machine according to claim 19, wherein the first member can be inserted into and removed from the through hole from the side opposite to the first internal space.

21. The bobbin comprises a first member and a second member different from the first member. The information unit is provided in the first member, The body portion is provided on the second member, as described in claim 14.

22. A rebar tying machine, A reel comprising a bobbin and a wire wound around the bobbin, A reel mounting unit to which the aforementioned reel is attached, A feeding unit that feeds the wire wound around the bobbin, A guide unit for guiding the aforementioned wire around the reinforcing bar, A twisting unit for twisting the wire around the reinforcing bar, It includes a detection unit for detecting the type of reel, The bobbin mentioned above is The body around which the wire is wound, the body having a first internal space into which the reel mounting unit is inserted, It is equipped with a projection that protrudes from the body, The detection unit is located in the first internal space when the reel is attached to the reel mounting unit. The projection is arranged in the first internal space, The aforementioned torso is, It has a cylindrical shape and a body with an internal space, The body of the main body is provided with a partition that divides the internal space into a first internal space and a second internal space different from the first internal space. The aforementioned projection protrudes from the partition body, When the reel is attached to the reel mounting unit, it rotates around its central axis. The projection is positioned on the central axis and extends along the central axis, The detection unit detects the type of the reel based on the protruding length of the projection, in a rebar tying machine.

23. A reel used in a rebar tying machine, Bobbin and, The system comprises a wire wound around the bobbin, The aforementioned rebar tying machine is A reel mounting unit to which the aforementioned reel is attached, A feeding unit that feeds the wire wound around the bobbin, A guide unit for guiding the aforementioned wire around the reinforcing bar, A twisting unit for twisting the wire around the reinforcing bar, It includes a detection unit for detecting the type of reel, The bobbin mentioned above is The body around which the wire is wound, the body having a first internal space into which the reel mounting unit is inserted, It is equipped with a projection that protrudes from the body, The detection unit is located in the first internal space when the reel is attached to the reel mounting unit. The projection is arranged in the first internal space, The aforementioned torso is, It has a cylindrical shape and a body with an internal space, The body of the main body is provided with a partition that divides the internal space into a first internal space and a second internal space different from the first internal space. The aforementioned projection protrudes from the partition body, When the reel is attached to the reel mounting unit, it rotates around its central axis. The projection is positioned on the central axis and extends along the central axis, The detection unit detects the type of the reel based on the protruding length of the projection.

Images