公开(公告)号：US12169030B2

公开(公告)日：2024-12-17

申请号：US18025463

申请日：2021-09-10

Applicant: SATAKE CORPORATION ,  MECHANO TRANSFORMER CORPORATION

Inventor： Takafumi Ito ,  Sze Keat Chee

IPC: F16K31/00 ,  G05D16/20 ,  H02N2/04

Abstract: A piezoelectric valve including an actuator that drives a valve body; a valve seat plate including a valve seat that is adapted to be positioned in contact with and away from the valve body, and a discharge passage; and a body case that houses the valve seat plate, in which the actuator includes a proximal portion fixed to the valve seat plate, a piezoelectric element having one end portion connected to an attachment face of the proximal portion and extending in a first longitudinal direction, a support portion integrally formed with the proximal portion, the support portion being arranged side-by-side with the piezoelectric element and extending in a second longitudinal direction crossing the first longitudinal direction, an operating portion connected to another end portion of the piezoelectric element and to a distal end portion of the support portion.

公开(公告)号：US12004430B2

公开(公告)日：2024-06-04

申请号：US17605914

申请日：2020-01-22

Applicant: SATAKE CORPORATION ,  MECHANO TRANSFORMER CORPORATION

Inventor： Takafumi Ito ,  Tadashi Matsushita ,  Toshiro Higuchi ,  Sze Keat Chee ,  Yoshinobu Mizuno

IPC: H10N30/88 ,  F16K31/00 ,  F16K31/02 ,  F16K31/44 ,  H02N2/04 ,  H10N30/20 ,  H10N30/50

CPC classification number: H10N30/88 ,  F16K31/007 ,  F16K31/02 ,  F16K31/44 ,  H02N2/04 ,  H02N2/043 ,  H10N30/50 ,  H10N30/883 ,  F16K31/004 ,  H10N30/20

Abstract: Provided is a piezoelectric valve in which the valve is opened/closed utilizing a displacement of a laminated piezoelectric element, including: a valve main body having a gas pressure chamber that receives compressed gas supplied externally; and an actuator having a valving element, the laminated piezoelectric element that generates a driving force required for operating the valving element as the displacement, and a displacement enlarging mechanism that enlarges the displacement of the laminated piezoelectric element to be acted on the valving element, the actuator being disposed in the valve main body, in which a surface of the laminated piezoelectric element is coated with silicone in a state in which the laminated piezoelectric element is integrated into the actuator.

公开(公告)号：USD788266S1

公开(公告)日：2017-05-30

申请号：US29516673

申请日：2015-02-05

Applicant: SATAKE CORPORATION ,  MECHANO TRANSFORMER CORPORATION ,  KURODA PNEUMATICS LTD.

Designer： Takafumi Ito ,  Sze Keat Chee ,  Toshitada Hirata ,  Toshiro Higuchi

公开(公告)号：US20150060337A1

公开(公告)日：2015-03-05

申请号：US14395475

申请日：2013-04-16

Applicant: SATAKE CORPORATION ,  MECHANO TRANSFORMER CORPORATION

Inventor： Takafumi Ito ,  Teruhiko Takeuchi ,  Tadashi Matsushita ,  Sze Keat Chee ,  Takeshi Yano ,  Takeshi Kamima ,  Toshiro Higuchi

IPC: B07B11/02 ,  B07B4/00 ,  B07B11/04 ,  F16K31/00

CPC classification number: B07B11/02 ,  B07B4/00 ,  B07B11/04 ,  F16K31/004 ,  F16K31/007

Abstract: A piezoelectric valve stably supplies gas even for a long gas ejection time, with a high responsivity to opening the valve, is provided. The piezoelectric valve, including a gas-pressure-chamber for receiving a compressed gas supplied from outside, a gas-discharge-channel through which the compressed gas is discharged from the gas-pressure-chamber, comprises: a valve body disposed in the gas-pressure-chamber and opens/closes the gas-discharge-channel; a piezoelectric element for producing a driving force to move the valve body as a displacement; a displacement-enlarging-mechanism for enlarging the displacement of the piezoelectric element to act on the valve body; and a driving unit having a signal-generating-unit for generating a signal comprising a pre-pulse and a main pulse and provides the signal generated by the signal-generating-unit to a driving circuit as an input signal to apply a driving voltage to the piezoelectric element to make the piezoelectric element expand and drive the valve body open.

Abstract translation: 提供了一种稳定地提供气体的气体，即使长时间的气体喷射时间也具有高的打开阀的响应性。 压电阀包括：用于接收从外部供应的压缩气体的气体压力室，压缩气体从气体压力室排出的气体放电通道，包括：设置在气体中的阀体 压力室，打开/关闭气体放电通道; 压电元件，用于产生作为位移移动阀体的驱动力; 用于扩大压电元件作用在阀体上的位移的位移扩大机构; 以及驱动单元，具有用于产生包括预脉冲和主脉冲的信号的信号发生单元，并且将由信号发生单元生成的信号提供给驱动电路作为输入信号，以将驱动电压施加到 使压电元件膨胀并驱动阀体打开的压电元件。

公开(公告)号：US11858007B2

公开(公告)日：2024-01-02

申请号：US17638090

申请日：2020-04-13

Applicant: SATAKE CORPORATION

Inventor： Takafumi Ito ,  Tadashi Matsushita ,  Masaaki Sadamaru

IPC: B07C5/342 ,  B07C5/36

CPC classification number: B07C5/3425 ,  B07C5/361

Abstract: To provide an optical grain sorter that can reduce the proportion of non-defective grains blown off collaterally, and even in a case in which a plurality of defective grains or the like fall down in a state overlapping each other, can blow off all the defective grains or the like.
The optical granular matter sorter includes a control unit configured to control an ejection time of a compressed gas from an air ejecting unit based on a result of detection obtained by an optical detecting unit, in which the control unit has a comparing unit configured to compare a defect detection time for an object to be sorted by the optical detecting unit and a single-granular matter passage set time set in advance, and a calculating unit configured to multiply the defect detection time by a predetermined coefficient based on a result of comparison obtained by the comparing unit to calculate the ejection time, and in a case in which the defect detection time is less than or equal to the single-granular matter passage set time as the result of comparison obtained by the comparing unit, the calculating unit multiplies the defect detection time by a small coefficient as compared to a case in which the defect detection time exceeds the single-granular matter passage set time to calculate the ejection time, and controls the ejection time of the compressed gas from the air ejecting unit based on a result of calculation.

公开(公告)号：US10525508B2

公开(公告)日：2020-01-07

申请号：US15758158

申请日：2016-09-05

Applicant: SATAKE CORPORATION

Inventor： Takafumi Ito ,  Sze Keat Chee

IPC: B07C5/342 ,  B07C5/36 ,  F16K31/00

Abstract: The present invention has an object to provide a blowing apparatus wherein a piezoelectric element is unlikely to cause insulation deterioration leading to burnout during use of the blowing apparatus. The blowing apparatus of the present invention blows compressed gas supplied from a compressed gas supply unit through a nozzle hole of a nozzle unit by opening a piezoelectric valve. The blowing apparatus comprises a humidity sensor detecting a humidity of the compressed gas inside a flow path unit, and a humidity control unit comparing a detected value of the humidity detected by the humidity sensor with a set value. If the humidity of the compressed gas inside the flow path unit detected by the humidity sensor is equal to or greater than the set value, the humidity control unit replaces the compressed gas inside the flow path unit with the compressed gas whose humidity is less than the set value and which is supplied from the compressed gas supply unit, before starting to use the blowing apparatus.

公开(公告)号：US12011742B2

公开(公告)日：2024-06-18

申请号：US18034088

申请日：2021-11-09

Applicant: SATAKE CORPORATION

Inventor： Takafumi Ito ,  Tomoyuki Miyamoto

IPC: B07C5/342 ,  B07C5/36 ,  F16K31/00

CPC classification number: B07C5/3425 ,  B07C5/366 ,  F16K31/008

Abstract: In an optical sorter that includes an optical detection unit to detect a to-be-sorted material at a detection position, a determining unit to determine a to-be-sorted material to be removed, based on a detection result by the optical detection unit, and an air-jetting unit to blow off and remove the to-be-sorted material to be removed using jet air of a compressed gas, based on a determination result by the determining unit, the air-jetting unit includes a piezoelectric valve to perform valve opening and closing by driving a valve disc utilizing displacement of a piezoelectric element, and a valve driving unit to apply a drive voltage to the piezoelectric element, and the valve driving unit controls the drive voltage applied to the piezoelectric element in accordance with the to-be-sorted material to be removed to thus control a jet-air pressure of the compressed gas for removing the to-be-sorted material.