WO2005124060A1

WO2005124060A1 - Reinforcement binder and wire reel

Info

Publication number: WO2005124060A1
Application number: PCT/JP2005/009371
Authority: WO
Inventors: Atsushi Matsuoka; Shinichi Ohkubo; Shuichi Ishii; Takahiro Nagaoka; Ichiro Kusakari
Original assignee: Max Co., Ltd.
Priority date: 2004-06-18
Filing date: 2005-05-23
Publication date: 2005-12-29
Also published as: EP1777360A1; AU2005254821A1; CN100522745C; US20070227613A1; CN1969101A; JP4140561B2; CA2570367A1; JP2006002500A

Abstract

A reinforcement binder, wherein the antenna of an RF tag reader and a photo sensor detecting the rotating position of a wire reel are installed in a wire reel storage part. The photo sensor detects a mark on the wire reel, a control part decelerates or stops the wire reel when an RF tag fitted to the side face of the wire reel is opposed to the antenna of the RF tag reader, and the RF tag reader performs an RF tag recognizing operation to identify the type of a wire. Since the wire reel is decelerated or stopped and transmission/receiving are performed when the RF tag is opposed to the antenna of the RF tag reader, a stable communication canbe performed.

Description

Specification

Rebar binding machine and wire reel

Technical field

The present invention relates to a reinforcing bar binding machine and a wire reel, and more particularly, to a reinforcing bar binding machine and a wire reel that identify a type of a wire wound on the wire reel by a non-contact type sensor.

Background art

[0002] JP-A-08-114034 and JP-A-08-114035 disclose a binding wire feeding mechanism for sending a binding wire (wire) while bending it in a loop shape and hanging it around a reinforcing bar, and a binding wire wound around the reinforcing bar. And a binding wire twisting mechanism that twists and binds, and performs a one-cycle binding operation by a binding wire feeding operation and a binding wire twisting operation by a trigger operation.

[0003] Also, Japanese Patent No. 3050369 discloses a method in which a wire reel is provided with a display means for indicating the type of wire, and the above-mentioned rebar tying machine detects the wire type display means of the wire reel, Means for controlling the torque, wherein the detection means detects the type of wire, and the control means automatically sets the wire torsion torque to an appropriate value according to the type of wire. Machine.

[0004] Japanese Patent No. 3050369 discloses a configuration in which a reflective seal or a barcode seal attached to a wire reel is read by a reflective photosensor and a magnet embedded in the wire reel as means for reading information such as the wire type of the wire. A configuration in which reading is performed by a magnetic sensor such as a Hall element or a lead switch, and a concave portion or a convex portion is formed on the side surface of the wire reel, and the tip of the lever is brought into contact with the side surface of the wire reel. There is disclosed a configuration in which detection is performed by a lever-type switch that turns on and off in a following manner.

[0005] Because a reinforcing bar binding machine is mainly used at an outdoor construction site, it may be exposed to wind, rain, and sand, and mud or dust adheres to the main body, and is easily contaminated. Therefore, when an optical element such as a photosensor is used as the wire reel identification means, raindrops or mud adhere to the reflective seal of the optical element reel of the main body, and the operation becomes inoperable or malfunctions. Sometimes.

Disclosure of the invention

[0006] One or more embodiments of the present invention provide a rebar tying machine and wire reel having the identification performance of non-contact wire reel identification means such as a stable RF identification system.

[0007] According to one or more embodiments of the present invention, a rebar binding machine includes a wire feeding mechanism, a wire twisting mechanism, and a wire cutting mechanism, and sends out a wire wound on a wire reel in a loop. Means for reading the wire identification information provided on the wire reel, and means for reading the wire identification information provided on the wire reel. Control means for controlling the wire feed amount and torsional torque according to the wire identification information is provided.The RF tag reader provided on the main body of the reinforcing bar binding machine, the RF tag attached to the wire reel, and the RF tag reader The radio wave transmitted by the RF tag in response to the transmission wave also includes control means for identifying the type of the wire and controlling the amount of wire feed, the torsional torque, and the like.

[0008] Further, according to one or more embodiments of the present invention, the RF tag is mounted on a side surface of the wire reel, and the RF tag reader is mounted on a rebar binding machine. An antenna is provided at a position facing the RF tag attachment surface.

[0009] According to one or more embodiments of the present invention, a rebar tying machine includes a light, magnetic or mechanical position detecting means for detecting a rotational position of the wire reel, and a side surface of the wire reel. And a transmission / reception timing control means for executing an RF tag recognition operation when the RF tag is located at a position substantially facing the antenna of the RF tag reader.

[0010] Further, according to one or more embodiments of the present invention, the rebar bundling machine may further include a wire reel rotating speed at a position where the RF tag on the side surface of the wire reel substantially faces the antenna of the RF tag reader. Wire feed control means or wire reel braking means for decelerating the speed.

[0011] According to one or more embodiments of the present invention, the rebar tying device may include a wire feed control unit or a wire reel for stopping an RF tag on a side surface of the wire reel within a transmission / reception range of the RF tag reader. A braking means is provided. [0012] Further, according to one or more embodiments of the present invention, the rebar bundling machine stops the wire reel at a position where the RF tag on the side surface of the wire reel substantially faces the antenna of the RF tag reader. A wire feed control means or a wire reel braking means is provided.

[0013] Further, according to one or more embodiments of the present invention, the wire reel braking means includes a recess provided on the wire reel, and a brake provided on the rebar tying machine for engaging and disengaging from the recess. And members.

[0014] According to one or more embodiments of the present invention, the rebar tying machine initializes the RF tag recognition process by the RF tag reader, including wire feeding when the tying device is powered on. Execute as part of the operation.

[0015] According to one or more embodiments of the present invention, the wire reel sends out the wire wound on the wire reel in a loop, winds it around a reinforcing bar, and twists the wire loop. It is attached to a reinforcing bar binding machine that binds the reinforcing bar by tightening the reinforcing bar and cutting the wire loop with the subsequent wire force. In response to the transmission wave from the RF tag reader provided in the reinforcing bar binding machine, Equipped with an RF tag that emits a type-identifiable signal.

[0016] Other features and advantages will be apparent from the description of the examples and the appended claims.

Brief Description of Drawings

FIG. 1 is a side view of a reinforcing bar binding machine with a reel cover removed.

FIG. 2 is a circuit block diagram of a reinforcing bar binding machine.

FIG. 3 (a) is a longitudinal sectional view of a wire reel.

FIG. 3 (b) is a front view of a wire reel.

圆 4] Rear view of rebar tying machine.

FIG. 5 is a flowchart of an initialization operation of a reinforcing bar binding machine.

FIG. 6 is a front view showing another embodiment of the wire reel.

FIG. 7 is a side view of another embodiment, showing a state in which a reel cover of the reinforcing bar binding machine is removed.

FIG. 8 (a) is a longitudinal sectional view of a wire reel.

FIG. 8 (b) is a front view of a wire reel.

FIG. 9 is a plan sectional view of a reinforcing bar binding machine. FIG. 10 is a plan sectional view of a reinforcing bar binding machine.

FIG. 11 is a plan sectional view of a reinforcing bar binding machine.

FIG. 12 is a front view showing another embodiment of the wire reel. Explanation of symbols

1 Rebar binding machine

3 Wire reel housing

6 reel support boss

7 Norepe antenna

8 Reflection type photo sensor

9 RF tag reader

10 control unit

21 rebar binding machine

22 yen hole

23 solenoid

24 plungers

25 plates

26 microswitch

27 panels

31 wire reel

32 hubs

33, 34 reel flange

36 RF tag

38 reflection mark

39 reflection mark

41 wire reel

42 hub

43, 44 reel flange 47 RF tag

48 long hole

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, one or more embodiments of the present invention will be described with reference to the drawings.

Example 1

FIG. 1 shows a right side surface of a reinforcing bar binding machine 1 according to one or more embodiments of the present invention.

The rebar binding machine 1 includes a binding wire feeding mechanism, a binding wire cutting mechanism, and a binding wire twisting mechanism, and a wire reel is loaded into a wire reel accommodating portion 3 formed at a rear portion on the right side of the housing 2. A binding wire feed mechanism (not shown) including a pair of gear-type pulleys that face each other is disposed in front of the wire reel housing 3. The wire wound on the wire reel is connected to the binding wire feed mechanism. , And is sent out in a loop along the curved wire guide nose 4 at the front and wound around a reinforcing bar. After the wire is sent out a predetermined length and wound around the rebar a plurality of times, the binding wire feed mechanism stops, and the hook (not shown) located inside the hook cover 15 arranged at the tip of the binding wire twisting mechanism is used. While grasping the wire loop, a tie wire cutting mechanism (not shown) arranged near the base of the wire guide nose 4 cuts the rear end of the wire loop and separates the wire loop from the subsequent wire force. Subsequently, the hook is rotated and twisted at one position of the wire loop to bind the reinforcing bar.

[0021] A circular reel support boss 6 is provided at the center of the wire reel housing portion 3, and an RF tag reader (Radio Frequency Tag Reader) and a flat loop antenna 7 are provided on the back surface above the reel support boss 6. Is arranged. On the surface of the reel supporting boss 6, a reflection type photo sensor 8 having a light emitting portion and a light receiving portion integrated with each other is arranged, and the loop antenna 7 and the reflection type photo sensor 8 are centered on the reel supporting boss 6. The position is almost 90 degrees.

FIG. 2 is a block diagram showing a circuit configuration of the reinforcing bar binding machine 1. The RF tag reader 9 (RF transmitter / receiver) and the photo sensor 8 are connected to the control unit 10, and the control unit 10 turns on the main power. During the initialization operation (the wire is sent to the wire guide nose 4 and the end is cut by the binding wire cutting mechanism), the rotation position of the wire reel described later is read by the photo sensor 8 and the The RF tag information is read by the RF tag reader 9 to automatically set the feed amount, torsional torque, etc. according to the wire type. Trigger from trigger switch 11 to control unit 10 When a signal is input, the wire feed motor drive circuit 12 and the wire twist motor drive circuit 14 are controlled based on the automatically set feed amount and torsion torque, and the wire feed motor 13 and the wire twist motor 15 are sequentially operated. Drive to perform one cycle of rebar binding operation.

FIGS. 3 (a) and 3 (b) show a wire reel 31, which is a resin molded product in which reel flanges 33, 34 are integrally formed on both side surfaces of a cylindrical hub 32. A rectangular RF tag mounting seat 35 is formed on the outer surface of the flange 33, and the sheet-shaped RF tag 36 attached to the RF tag mounting seat 35 faces the loop antenna 7 of the reinforcing bar binding machine 1. Reinforcing bar Load into binding machine 1. A white reflective mark 38 is attached to the pin support post 37 formed in the hub 32. The positional relationship between the RF tag 36 and the reflective mark 38 is determined by the positions of the loop antenna 7 and the reflective photosensor 8. The RF tag 36 faces the loop antenna 7 when the reflection mark 38 faces the reflection type photosensor 8 when the wire reel 31 rotates. FIG. 4 shows a state in which the wire reel 31 is loaded into the reinforcing bar binding machine 1. 9 is an RF tag reader.

[0024] Regarding the RF tag 36, a read-only RF tag (which forms an RF resonance circuit by forming an aluminum foil coil pattern and a capacitor pattern on both sides of a dielectric film and connecting the coil pattern and the capacitor pattern) ( Japanese Utility Model Laid-Open No. 5-75890) and an IC chip such as EEP-ROM that can read and write data.

No. 2000-148950), and any type may be used. However, if the type of wire is simply identified, an RF tag without an IC chip is sufficient and the cost can be reduced. In the case of an RF tag equipped with an IC chip, in addition to wire identification data, various data such as manufacturer data and manufacturing lot number can be written. It is also possible to write data such as the remaining amount of the battery and the start date of use.

[0025] Here, a system constituted by a read-only RF tag and an RF tag reader will be described. The RF tag reader 9 mounted on the rebar tying machine has a transmission unit, a reception unit, and a transmission / reception control unit. The transmitting unit of the RF tag reader 9 scans the transmission wave by changing the frequency of the transmission wave in a predetermined frequency band, and transmits a radio wave having the same frequency as the resonance frequency of the RF tag 36. Resonates with the transmission wave and induces power, and the RF tag reader 9 A radio wave of the same frequency as the transmitted wave of the RF tag is also transmitted. The receiving unit of the RF tag reader 9 receives the transmitted radio wave of the resonance circuit of the RF tag 36, and the transmission / reception control unit also recognizes the received wave frequency power of the resonance frequency peculiar to the RF tag. It is specified.

For example, in the frequency band a from the frequency channel al to a20, the RF tags of the frequency channels al, a8, and al5 are attached to the three types of wires and the wire reels A, B, and C, respectively. The type of the wire can be identified by one of the resonance frequency forces al, a8, and al5 of the RF tag 36 received by the user. If there is no response to the transmitted wave, it can be determined that the wire and the wire reel are not genuine.

FIG. 5 shows a flow chart of the wire reel identifying operation of the reinforcing bar binding machine. First, by loading the wire reel 31 into the reinforcing bar binding machine 1 and turning on the main power switch, the reinforcing bar binding machine 1 starts an initialization operation and feeds the wire for a predetermined length until it reaches the wire tip nose 4 and the wire guide nose 4. At this time, when the wire reel 31 rotates and the reflection mark 38 reaches the front of the reflection type photo sensor 8 and the RF tag 36 is positioned in front of the loop antenna 7 of the RF tag reader 9, the reflection type photo sensor 8 When an ON signal is output from the control unit 10 and the control unit 10 provided as a control unit receives the ON signal, the control unit 10 drives the RF tag reader 9 to execute an RF tag recognition operation.

[0028] Here, the RF tag 36 force also identifies the type of wire reel (wire type) from the reflected frequency force, and the control unit 10 sets an appropriate torsional torque and feed amount according to the type of wire. Then, the wire feeding is stopped, and the initialization process is completed. After that, until the main power switch is turned off, each time the trigger switch is operated, the binding operation is performed with the torsion torque and feed amount set in the initialization process. As described above, the configuration in which the RF tag recognition operation is performed when the RF tag 36 provided on the wire reel 31 faces the front of the loop antenna 7 of the RF tag reader 9 allows the wire reel to be reliably identified. Can be.

Further, when the reflective photosensor 8 detects the reflection mark 38 of the wire reel 31, that is, when the RF tag 36 of the wire reel 31 faces the loop antenna 7 of the RF tag reader 9, the wire feed is performed. The RF tag recognition operation may be performed more reliably by controlling the deceleration or stop to reduce or stop the rotation speed of the wire reel 31. In addition, as shown in FIG. The detection range of the reflection mark may be extended as the reflection mark 39 having the shape extended in the direction. In addition, there is no problem even if the RF tag recognition operation is continued during the binding operation after the initialization process.

Example 2

In the first embodiment, the configuration in which the rotation position of the wire reel is detected by the photo sensor is described. However, by performing the RF tag recognition operation by mechanically temporarily stopping the wire reel, a recognition error can be further generated. An embodiment for reducing the performance will be described below.

FIG. 7 shows a reinforcing bar binding machine 21, and the arrangement of the loop antenna 7 and the RF tag reader is the same as that of the reinforcing bar binding machine of FIG. 1, but here, instead of the photosensor, the reel of the wire reel accommodating section 3 is used. A circular hole 22 is formed in the wall surface behind the support boss 6, and the solenoid plunger arranged on the back of the wire reel housing 3 is moved from the circular hole 22 to the surface of the wire reel housing 3 (in front of the paper in FIG. 6). It is configured to protrude to stop the wire reel.

FIGS. 8 (a) and 8 (b) show a wire reel 41, 42 is a hub, 43 and 44 are reel flanges,

Reference numeral 45 denotes an RF tag mounting seat, and a circular hole 46 is formed in the reel flange 43 at a position 90 degrees from the RF tag mounting seat 45 as viewed from the center of rotation. The positional relationship between the RF tag mounting seat 45, the RF tag 47 and the circular hole 46 is the same as the positional relationship between the RF tag 36 and the reflection mark 38 on the wire reel 31 in FIG. 3, and the reinforcing bar binding in FIG. The position of the circular hole 22 of the wire reel accommodating portion 3 of the machine 21 corresponds to the circular hole 46 of the wire reel 41 in FIGS. 8A and 8B.

As shown in FIG. 9, the plunger 24 of the solenoid 23 disposed on the back of the wire reel housing 3 is passed through the circular hole 12 on the wall surface of the wire reel housing 3 as described above. When power is supplied to the solenoid 23, the plunger 24 projects into the wire reel housing 3. At the rear end of the plunger 24, a plate 25 is mounted. When the plunger 24 moves forward and fits into the circular hole 46 of the wire reel 41, the micro switch 26 arranged next to the solenoid 23 is moved to the plate 25. Press to turn on microswitch 26. In addition, 27 is a panel, and 28 in front (upper in the figure) of the wire reel 41 is a wire feed mechanism.

FIG. 9 shows an initial state of the rebar tying machine 21. When the power is turned on after the wire reel 41 is loaded, an initialization process is started. Drive in the direction. As a result, the plunger 24 is connected to the wire as shown in FIG. When the wire reel 41 rotates and the circular hole 46 of the wire reel 41 comes to the position of the plunger 24, the plunger 24 comes into contact with the reel flange 43 of the reel 41 as shown in FIG. The wire reel 41 stops rotating at a position where the RF tag 47 faces the loop antenna 7 of the RF tag reader 9.

At this time, the microswitch 26 is turned on by the plate 25 of the solenoid 23, and the control unit starts the RF tag recognition operation by this ON signal. When the resonance frequency of the RF tag 47 is read and the identification of the wire type is completed, the control unit sets an appropriate torsion torque and feed amount according to the wire type, stops energizing the solenoid 23, and sets the plunger. The panel 24 is retracted to the initial position by the panel 27, detaches from the circular hole 46 of the wire reel 41, and ends the initialization process.

[0036] As described above, by temporarily stopping the rotation and performing the RF tag recognition operation at the position where the RF tag 47 of the wire reel 41 faces the loop antenna 7 of the RF tag reader 9, it is possible to reliably perform the wire recognition. The species can be determined.

As shown in FIG. 12, the hole of the wire reel 41 may be formed as a long hole 48 which is long in the circumferential direction in the same manner as the reflection mark 39 of the wire reel 31 of FIG. The fitting of the plunger 24 into the hole of the rotating wire reel 41 is facilitated, the wire reel can be stopped reliably, and the welding force of the plunger 24 can be reduced, so that the rotation resistance and power consumption of the reel can be reduced. Can be reduced.

[0038] The present invention is not limited to the above embodiment, and various modifications can be made within the technical scope of the present invention. For example, instead of the torsion torque of the wire, the time for the torsion operation of the wire may be set, or the overload stop current value of the motor that performs the torsion operation of the wire may be set. Also, characters, marks, colors, etc. that can identify the wire type may be displayed on the surface of the RF tag so that the wire reel can be visually recognized in advance. Of course

Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.

[0040] This application is based on Japanese Patent Application (No. 2004-187182) filed on June 18, 2004 And its contents are incorporated herein by reference.

Industrial applicability

According to one or more embodiments of the present invention, a reinforcing bar binding machine is provided with an RF tag on a wire reel, and information of a wire type is read by an RF tag reader mounted on the reinforcing bar binding machine, and a wire feed amount and a torsional torque are determined. Configured to control. For this reason, it is less affected by climatic conditions such as rain and dirt such as mud than the conventional type in which information is read by a photo sensor, and wire information can be reliably acquired. In addition, when the RF tag is within the transmission / reception range of the RF tag reader, the rotation of the wire reel is decelerated or stopped, thereby preventing the RF tag recognition error.

Claims

The scope of the claims

[1] A wire feeding mechanism, a wire twisting mechanism, and a wire cutting mechanism are provided, the wire wound on a wire reel is sent out in a loop and wound around a reinforcing bar, and the wire loop is twisted to tighten the reinforcing bar. A rebar tying machine that cuts the loop with subsequent wire force and ties the rebar,

Means for reading wire identification information provided on the wire reel;

Control means for controlling a wire feed amount and a torsion torque according to the read wire identification information;

An RF tag reader provided on the main body side of the reinforcing bar binding machine,

An RF tag attached to a wire reel,

Control means for identifying the type of wire and controlling a wire feed amount, a torsional torque, and the like with respect to a radio wave transmitted by the RF tag in response to a transmission wave of the RF tag reader;

Reinforcing machine.

[2] The RF tag is mounted on the side of the wire reel,

The RF tag reader has an antenna at a position facing the RF tag attaching surface of the wire reel loaded in the reinforcing bar binding machine.

The reinforcing bar binding machine according to claim 1.

[3] position detecting means for detecting a rotational position of the wire reel;

Transmission / reception timing control means for executing an RF tag recognition operation when the RF tag on the side surface of the wire reel is located substantially opposite to the antenna of the RF tag reader;

The rebar tying machine according to claim 2, comprising:

4. The rebar tying machine according to claim 3, further comprising means for reducing a rotation speed of the wire reel at a position where an RF tag on a side surface of the wire reel substantially faces an antenna of the RF tag reader.

5. The reinforcing bar binding machine according to claim 3, further comprising means for stopping an RF tag on a side surface of the wire reel within a transmission / reception range of the RF tag reader.

[6] The means for stopping the RF tag on the side surface of the wire reel within the transmission / reception range of the RF tag reader includes a concave portion provided on the wire reel and a concave portion provided on the rebar tying machine. 6. The reinforcing-bar tying machine according to claim 5, comprising a braking member that detaches.

7. The rebar tying machine according to claim 3, further comprising means for stopping the wire reel at a position where an RF tag on a side surface of the wire reel substantially faces an antenna of the RF tag reader.

[8] The reinforcing bar binding machine according to claim 7, wherein the means for stopping the wire reel includes a concave portion provided in the wire reel, and a braking member provided in the reinforcing bar binding device to engage and disengage with the concave portion.

[9] The reinforcing bar binding machine according to any one of claims 1 to 8, wherein the RF tag recognition step by the RF tag reader is performed as part of an initialization operation including wire feeding when the reinforcing bar binding machine is turned on.

[10] The wound wire is sent out in a loop and wound around a rebar, the wire loop is twisted to tighten the rebar, and the wire loop is cut by the subsequent wire force to be attached to a rebar binding machine that binds the rebar. And a RF tag for transmitting a signal capable of identifying the type of the wire in response to a transmission wave from an RF tag reader provided in the reinforcing bar binding machine. And wire reel.

[11] a wire reel housing,

RF tag reader,

A loop antenna connected to the RF tag reader and arranged in the wire reel housing;

A reinforcing bar binding machine comprising:

12. The rebar tying machine according to claim 11, further comprising a reflection type photosensor disposed in the wire reel accommodating portion and having a light emitting portion and a light receiving portion.

[13] Further, a reel support boss provided in the wire reel accommodating portion is provided, and the loop antenna and the reflection type photosensor are arranged at a position substantially 90 degrees around the reel support boss. 13. The reinforcing bar binding machine according to claim 12.

[14] Furthermore,

A circular hole formed in the wall surface of the wire reel housing,

A solenoid disposed on the back of the wire reel housing,

With The plunger of the solenoid can protrude from the circular hole toward the surface of the wire reel housing.

The reinforcing bar binding machine according to claim 11.

[15] Further, a reel support boss provided in the wire reel accommodating portion is provided, wherein the loop antenna and the circular hole are arranged at a position substantially 90 degrees around the reel support boss. Item 14. Rebar tying machine.

[16] RF tag reader,

With Trigaswich,

A wire feed motor drive circuit,

A wire torsion motor drive circuit,

A control unit;

A control circuit for a reinforcing bar binding machine, comprising:

[17] When the trigger signal having the trigger switch force is input, the control circuit

Controlling the wire feed motor drive circuit and the wire torsion motor drive circuit in accordance with the wire identification data read by the RF tag reader to drive the wire feed motor and the wire torsion motor;

A control circuit for a reinforcing bar binding machine according to claim 16.

[18] cylindrical hub;

A reel flange,

An RF tag attached to the above reel flange,

A wire reel comprising:

[19] Further, an RF tag mounting seat formed on an outer surface of the reel flange is provided. The RF tag is attached to the RF tag mounting seat.

19. The wire reel of claim 18.

[20] The wire reel according to claim 18, wherein the RF tag stores wire identification data.

[21] The wire reel according to claim 20, wherein the RF tag further stores manufacturer data and a manufacturing lot number.

[22] The wire reel according to claim 20, wherein the remaining amount of the wire and the use start date can be written on the RF tag.

[23] The wire reel according to claim 18, further comprising a reflection mark.

24. The wire reel according to claim 23, wherein the RF tag and the reflection mark are disposed at a position substantially 90 degrees around the center of rotation of the wire reel.

25. The wire reel according to claim 18, further comprising a circular hole formed in said reel flange.

26. The wire reel according to claim 25, wherein the RF tag and the circular hole of the reel flange are arranged at substantially 90 degrees with respect to the rotation center of the wire reel.

[27] A wire wound on the wire reel according to claim 18.

[28] Wire tip force Feed the wire until it reaches the S wire guide nose,

Drive the RF tag reader,

RF tag force attached to wire reel Reflected frequency force Identifies wire type,

Depending on the type of the wire, set the torsional torque and feed amount,

Rebar binding method in a rebar binding machine.

[29] Further, the reflection mark on the wire reel is detected,

When the reflection mark is detected, the RF tag reader is driven,

29. A method for binding a reinforcing bar in the reinforcing bar binding machine according to claim 28.

[30] Further, when the above-mentioned reflection mark is detected, the wire feeding is reduced.

30. A reinforcing bar binding method in the reinforcing bar binding machine according to claim 29.

[31] Further, when the reflection mark is detected, the wire feeding is stopped.

[32] Further, the plunger is driven in the forward direction,

When the plunger is fitted in the circular hole of the wire reel, the RF tag reader is driven.

29. A method for binding a reinforcing bar in the reinforcing bar binding machine according to claim 28. Further, when the plunger is fitted into the circular hole of the wire reel, the wire feed is stopped.

33. A reinforcing bar binding method in the reinforcing bar binding machine according to claim 32.

The transmitter of the RF tag reader installed in the rebar tying machine transmits radio waves while changing the frequency step by step,

When the frequency of the transmitted radio wave corresponds to the resonance frequency of the RF tag attached to the wire reel, power is induced by the resonance circuit of the RF tag,

The above RF tag transmits radio waves,

The receiving unit of the RF tag reader receives the radio wave transmitted by the RF tag, and the transmission / reception control unit of the RF tag reader recognizes the resonance frequency of the RF tag,

The resonance frequency force of the RF tag also identifies the type of wire,

A method for identifying the type of wire in a reinforcing bar binding machine.

Further, when the RF tag does not respond to the radio wave transmitted by the transmitting unit of the RF tag reader, it is determined that the wire and the wire reel are not genuine products. Identification method.