公开(公告)号：US11851898B2

公开(公告)日：2023-12-26

申请号：US16918456

申请日：2020-07-01

Applicant: MAKITA CORPORATION

Inventor： Yuta Asakura ,  Shunta Mizuno

IPC: E04G21/12 ,  E04G21/16 ,  E04C5/16 ,  B21F15/04

CPC classification number: E04G21/16 ,  B21F15/04 ,  E04C5/163 ,  E04G21/122

Abstract: A rebar tying tool may include a twisting mechanism, a body, a grip, and a control board. The twisting mechanism may include a twisting motor and a holder configured to twist a wire around rebus by operation of the twisting motor. The body may house the twisting mechanism. The grip may be disposed below the body and configured to be gripped by an operator. The control board may be configured to control the operation of the twisting motor. The control board may be disposed below a connection between the grip and the body.

公开(公告)号：US11554409B2

公开(公告)日：2023-01-17

申请号：US17115023

申请日：2020-12-08

Applicant: MAKITA CORPORATION

Inventor： Shunta Mizuno ,  Masahiro Watanabe ,  Yuki Kawai

IPC: B21F15/04 ,  E04C5/16 ,  E04G21/12

Abstract: A rebar tying tool (2; 302; 402) include a feed mechanism (24), which includes a first motor (32; 304) and feeds a wire (W), and a twisting mechanism, which includes a second motor (76; 306) and twists together one or more portions of the wire. A control unit (202; 350) controls the first motor and the second motor and includes a general-purpose I/O port (202c; 350c) and a motor-control-signal output port (202a; 350a). A motor-control-signal-output-destination-switching circuit (204; 310; 406) inputs motor-control signals (UH, VH, WH, UL, VL, WL) from the control unit via the motor-control-signal output port and selectively outputs the inputted motor-control signals to either the first motor or the second motor in response to input of a switching signal (SW).

公开(公告)号：US20250116127A1

公开(公告)日：2025-04-10

申请号：US18904691

申请日：2024-10-02

Applicant: MAKITA CORPORATION

Inventor： Yuta ASAKURA ,  Yoshitaka Machida ,  Shunta Mizuno

IPC: E04G21/12 ,  B21F15/04

Abstract: A rebar tying machine comprises a reel including a bobbin and a wire wound on the bobbin; a reel attachment unit to which the reel is attached; a feeding unit configured to feed the wire wound on the bobbin; a guide unit configured to guide the wire around rebars; a twisting unit configured to twist the wire around the rebars; and a detection unit configured to detect a type of the reel. The bobbin includes a body portion on which the wire is wound, the body portion having a first internal space into which the reel attachment unit is inserted; and an information portion that has type information indicating the type of the reel. The detection unit is positioned in the first internal space when the reel is attached on the reel attachment unit.

公开(公告)号：US11421988B2

公开(公告)日：2022-08-23

申请号：US16816326

申请日：2020-03-12

Applicant: MAKITA CORPORATION

Inventor： Shunta Mizuno

IPC: G01C15/00 ,  G01B11/26

Abstract: In one aspect of the present disclosure, a laser marker includes a supporter, a movable portion, at least one laser optical source, a tilt sensor, a first actuator, and a controller. The movable portion is tiltably supported by the supporter. The tilt sensor is provided to the movable portion, detects a first tilt of the movable portion, and outputs a first detection value that indicates the first tilt. The first actuator changes a tilt of the movable portion with respect to the supporter. The controller controls the first actuator such that a center value of a first series of detection values and a reference value coincide with each other.

公开(公告)号：US11780620B2

公开(公告)日：2023-10-10

申请号：US17584050

申请日：2022-01-25

Applicant: MAKITA CORPORATION

Inventor： Hitomi Hattori ,  Yuta Asakura ,  Shunta Mizuno

IPC: B65B13/02

CPC classification number: B65B13/027

Abstract: The disclosure herein discloses a rebar tying machine. The rebar tying machine may include a feed motor, a current sensor configured to detect a current flowing through the feed motor, and a control unit configured to control an operation of the feed motor. The rebar tying machine may be configured to perform: a feeding-out process in which a wire is fed out around rebars by driving the feed motor, a gripping process in which a vicinity of a tip of the wire is gripped, a pulling-back process in which the wire is pulled back by driving the feed motor, a cutting process in which the wire is cut, and a twisting process in which the wire is twisted. The control unit may be configured to determine a diameter of the rebars based on a history of a current value flowing through the feed motor in the pulling-back process.

公开(公告)号：US11529669B2

公开(公告)日：2022-12-20

申请号：US17115045

申请日：2020-12-08

Applicant: MAKITA CORPORATION

Inventor： Shunta Mizuno ,  Yuki Kawai

IPC: B21F15/04 ,  E04G21/12 ,  E04C5/16

Abstract: A rebar tying tool includes: a feed mechanism (24), which includes a first brushless motor (32) and performs an advancing process that advances a wire (W) and a draw-back process that draws back the wire (W); a first inverter circuit (212), which is electrically connected to the first brushless motor; and a control unit (202), which controls the first brushless motor via the first inverter circuit. The first brushless motor comprises a first Hall-effect sensor (180), which is disposed on a first sensor board (178). In the advancing process, the control unit performs lead-angle control on the first brushless motor at a first lead angle. In the draw-back process, the control unit performs lead-angle control on the first brushless motor at a second lead angle. The first lead angle is set to be larger than the second lead angle.