Patents by Inventor MU-CHING CHANG

MU-CHING CHANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11190090
    Abstract: An apparatus for automated encapsulation of motor rotor core with magnet steel is introduced. The apparatus includes at least one encapsulation unit, a plastic granule feeding device, a waste removing device, a conveyance device and a control device. Under a coordinated control of the control device, a rotor core feeding mechanism of the encapsulation unit feeds rotor cores to a plastic dispensing mechanism in cycles, the plastic granule feeding device separates, outputs and dispenses plastic granules, so that they are arrayed before being dispensed onto the rotor cores, and the conveyance device conveys plastic granules and moves the waste removing device to carry waste to a waste removal zone. With these arrangements, it is able to realize automated feeding of rotor cores, automated feeding of plastic granules and automated removal of waste to achieve completely automated rotor core encapsulation operation while enables mass production of motor rotor cores.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: November 30, 2021
    Assignee: GALLANT MICRO. MACHINING CO., LTD.
    Inventors: Hung-Neng Lai, Mu-Ching Chang, Chih-Yuan Chiang, Chih-Hung Hsu, Chun-Chiang Ding
  • Publication number: 20210367491
    Abstract: An apparatus for automated encapsulation of motor rotor core with magnet steel is introduced. The apparatus includes at least one encapsulation unit, a plastic granule feeding device, a waste removing device, a conveyance device and a control device. Under a coordinated control of the control device, a rotor core feeding mechanism of the encapsulation unit feeds rotor cores to a plastic dispensing mechanism in cycles, the plastic granule feeding device separates, outputs and dispenses plastic granules, so that they are arrayed before being dispensed onto the rotor cores, and the conveyance device conveys plastic granules and moves the waste removing device to carry waste to a waste removal zone. With these arrangements, it is able to realize automated feeding of rotor cores, automated feeding of plastic granules and automated removal of waste to achieve completely automated rotor core encapsulation operation while enables mass production of motor rotor cores.
    Type: Application
    Filed: May 22, 2020
    Publication date: November 25, 2021
    Inventors: HUNG-NENG LAI, MU-CHING CHANG, CHIH-YUAN CHIANG, CHIH-HUNG HSU, CHUN-CHIANG DING
  • Patent number: 11052588
    Abstract: An electrically-driven rotor iron core magnetic steel chamber dispensing device is introduced. Dispensing units each include a dispensing channel, dispensing head, plunger barrel, plunger and stop-injection opening pin. The dispensing channel is above the dispensing head and in communication with the dispensing head. The dispensing head is disposed at the top of the plunger barrel and in communication with the plunger barrel. The plunger is displaced in the plunger barrel to move up and down relative to the plunger barrel. The stop-injection opening pin includes a pin body disposed vertically, arranged beside the plunger barrel, and fixed to a lower mold from inside. A pin head portion is disposed at the top of the pin body. A barb is disposed between the pin head portion and the pin body. The pin head portion protrudes into the dispensing channel, allowing molten plastic in the dispensing channel to enter the barb.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: July 6, 2021
    Assignee: GALLANT MICRO. MACHINING CO., LTD.
    Inventors: Hung-Neng Lai, Mu-Ching Chang, Chih-Hung Hsu
  • Patent number: 10807852
    Abstract: An electrically-driven rotor iron core magnetic steel chamber dispensing device effectuates dispensing in the gap between a magnetic steel chamber and a magnetic steel chunk of an electrically-driven rotor iron core. The electrically-driven rotor iron core magnetic steel chamber dispensing device includes a plurality of dispensing units each corresponding in position to one or more magnetic steel chambers. The dispensing units correspond in position to the magnetic steel chamber and are arranged in the circumferential direction of the electrically-driven rotor. The dispensing units are arranged outside the magnetic steel chamber and positioned proximate to the magnetic steel chamber or is located in the direction of the projection of the magnetic steel chamber. A dispensing opening of each dispensing unit corresponds in position to the magnetic steel chamber from below.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 20, 2020
    Assignee: GALLANT MICRO. MACHINING CO., LTD.
    Inventors: Hung-Neng Lai, Mu-Ching Chang, Chih-Hung Hsu
  • Publication number: 20200316834
    Abstract: An electrically-driven rotor iron core magnetic steel chamber dispensing device is introduced. Dispensing units each include a dispensing channel, dispensing head, plunger barrel, plunger and stop-injection opening pin. The dispensing channel is above the dispensing head and in communication with the dispensing head. The dispensing head is disposed at the top of the plunger barrel and in communication with the plunger barrel. The plunger is displaced in the plunger barrel to move up and down relative to the plunger barrel. The stop-injection opening pin includes a pin body disposed vertically, arranged beside the plunger barrel, and fixed to a lower mold from inside. A pin head portion is disposed at the top of the pin body. A barb is disposed between the pin head portion and the pin body. The pin head portion protrudes into the dispensing channel, allowing molten plastic in the dispensing channel to enter the barb.
    Type: Application
    Filed: July 31, 2019
    Publication date: October 8, 2020
    Inventors: HUNG-NENG LAI, MU-CHING CHANG, CHIH-HUNG HSU
  • Publication number: 20200317496
    Abstract: An electrically-driven rotor iron core magnetic steel chamber dispensing device effectuates dispensing in the gap between a magnetic steel chamber and a magnetic steel chunk of an electrically-driven rotor iron core. The electrically-driven rotor iron core magnetic steel chamber dispensing device includes a plurality of dispensing units each corresponding in position to one or more magnetic steel chambers. The dispensing units correspond in position to the magnetic steel chamber and are arranged in the circumferential direction of the electrically-driven rotor. The dispensing units are arranged outside the magnetic steel chamber and positioned proximate to the magnetic steel chamber or is located in the direction of the projection of the magnetic steel chamber. A dispensing opening of each dispensing unit corresponds in position to the magnetic steel chamber from below.
    Type: Application
    Filed: July 31, 2019
    Publication date: October 8, 2020
    Inventors: HUNG-NENG LAI, MU-CHING CHANG, CHIH-HUNG HSU