Patents Assigned to Tokyo Weld Co., Ltd.
  • Publication number: 20230024820
    Abstract: An analysis device for visualizing an accuracy of a trained determination device includes an acquisition unit acquiring an image pair of a non-defective product image and a defective product image, an extraction unit extracting an image region of a defective part of the defective product, a generation unit generating a plurality of image regions of pseudo-defective parts, a compositing unit synthesizing each of the image regions of the plurality of pseudo-defective parts with the non-defective product image to generate a plurality of composite images having different feature quantities, an unit outputting the plurality of composite images to the determination device and acquiring a label corresponding to each of the plurality of composite images from the determination device, and a display control unit displaying an object indicating the label corresponding to each of the plurality of composite images in an array based on the feature quantities.
    Type: Application
    Filed: February 2, 2021
    Publication date: January 26, 2023
    Applicants: Morpho, Inc., Tokyo Weld Co., Ltd.
    Inventors: Yoshihiko YOKOYAMA, Tsukasa KATO, Daiju KIKUCHI, Satoshi HIROTA, Takuma UMENO
  • Patent number: 9838608
    Abstract: The work, visual inspection device 30 composes a conveyance table 2 which holds and conveys works W1 and W2 and camera units 8, 9, 10, 11, 12 and 13 which capture images of the works conveyed by the conveyance table, The camera 91/101 of the camera units 9 and 10 includes a first body tube 91C/101C including an imaging lens 91L/101L and a second body tube 91Ca/101a attached to the front end of the first body tube 91C/101C. The second body tube 91Ca/101Ca includes a glass plate 91G/101G for focal adjustment having two surfaces in parallel with each other.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: December 5, 2017
    Assignee: TOKYO WELD CO., LTD.
    Inventor: Hiroaki Chaki
  • Patent number: 9664243
    Abstract: A gripper mechanism and a movement mechanism which utilize an electromagnetic actuator which can secure a sufficient thrust force at least at a certain level over a wide range of displacement. The movement mechanism includes a pair of electromagnetic actuators disposed inside a pair of rails and an intermediate actuator provided between the electromagnetic actuators. The electromagnetic actuators function as a gripper mechanism to be gripped by the rails. The electromagnetic actuators each include a displacement amplification mechanism including a magnetic body, and coils provided in the displacement amplification mechanism. A magnetic flux is generated in the magnetic body by passing an electric current through the coils so as to displace the displacement amplification points of the displacement amplification mechanism.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: May 30, 2017
    Assignees: TOKYO WELD CO., LTD.
    Inventors: Toshiro Higuchi, Hiroyuki Nabae, Noritoshi Nakanishi
  • Patent number: 9430841
    Abstract: There is provided a defect inspection method capable of detecting a crack with high accuracy. The defect inspection method includes the steps of: obtaining a shot image comprising pixels; and scanning the shot image in predetermined directions, and assigning a high evaluation value to a pixel M for each scanning direction when the luminance of the pixel M is lower than the luminances of first adjacent pixels K, O, located on both sides of the pixel M in the scanning direction and, in addition, the luminance of each of second adjacent pixels C, W, located on both sides of the pixel M in a direction perpendicular to the scanning direction, is lower than the luminances of third adjacent pixels A, E or U, Y located on both sides of the second adjacent pixel in the scanning direction.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: August 30, 2016
    Assignee: TOKYO WELD CO., LTD.
    Inventor: Yoshihiko Yokoyama
  • Patent number: 9281111
    Abstract: There is provided an electromagnetic actuator which can secure a sufficient thrust force at least at a certain level over a wide range of displacement. The electromagnetic actuator 1 having a point of amplified displacement includes: a displacement amplification mechanism 1A made of a magnetic material and having two surfaces 2as, 2bs that form a gap 5 therebetween; and a coil 6 provided in the displacement amplification mechanism 1A. A magnetic flux is generated by passing an electric current through the coil 6, thereby generating an attraction force between the surfaces 2as, 2bs. The attraction force displaces the point of amplified displacement.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: March 8, 2016
    Assignees: TOKYO WELD Co., Ltd.
    Inventors: Toshiro Higuchi, Hiroyuki Nabae, Koji Takahashi
  • Publication number: 20150240889
    Abstract: A gripper mechanism and a movement mechanism which utilize an electromagnetic actuator which can secure a sufficient thrust force at least at a certain level over a wide range of displacement. The movement mechanism includes a pair of electromagnetic actuators disposed inside a pair of rails and an intermediate actuator provided between the electromagnetic actuators. The electromagnetic actuators function as a gripper mechanism to be gripped by the rails. The electromagnetic actuators each include a displacement amplification mechanism including a magnetic body, and coils provided in the displacement amplification mechanism. A magnetic flux is generated in the magnetic body by passing an electric current through the coils so as to displace the displacement amplification points of the displacement amplification mechanism.
    Type: Application
    Filed: February 25, 2015
    Publication date: August 27, 2015
    Applicants: TOKYO WELD CO., LTD.
    Inventors: Toshiro HIGUCHI, Hiroyuki NABAE, Noritoshi NAKANISHI
  • Publication number: 20140307082
    Abstract: The work, visual inspection device 30 composes a conveyance table 2 which holds and conveys works W1 and W2 and camera units 8, 9, 10, 11, 12 and 13 which capture images of the works conveyed by the conveyance table, The camera 91/101 of the camera units 9 and 10 includes a first body tube 91C/101C including an imaging lens 911/101L and a second body tube 91Ca/101a attached to the front end of the first body tube 91C/101C.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 16, 2014
    Applicant: Tokyo Weld Co., Ltd.
    Inventor: Hiroaki CHAKI
  • Publication number: 20140300435
    Abstract: There is provided an electromagnetic actuator which can secure a sufficient thrust force at least at a certain level over a wide range of displacement. The electromagnetic actuator 1 having a point of amplified displacement includes: a displacement amplification mechanism 1A made of a magnetic material and having two surfaces 2as, 2bs that form a gap 5 therebetween; and a coil 6 provided in the displacement amplification mechanism 1A. A magnetic flux is generated by passing an electric current through the coil 6, thereby generating an attraction force between the surfaces 2as, 2bs. The attraction force displaces the point of amplified displacement.
    Type: Application
    Filed: April 7, 2014
    Publication date: October 9, 2014
    Applicant: TOKYO WELD CO., LTD.
    Inventors: Toshiro HIGUCHI, Hiroyuki NABAE, Koji TAKAHASHI
  • Patent number: 7931042
    Abstract: A vacuum suction system comprises a work conveyor table 2 having work receiving openings 5, and a table base 3 having vacuum suction channels 7 which communicate with the work receiving openings 5 of the conveyor table 2. The work receiving openings 5 and the vacuum suction channels 7 communicate with a vacuum generation source 17 via a vacuum pipe 9. A negative pressure sensor 10 is disposed on the vacuum pipe 9. Based on a signal from the negative pressure sensor 10, a compressed air generation source 20 supplies a compressed air to the vacuum pipe 9 and thereby stabilizes the vacuum level in the vacuum pipe 9.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: April 26, 2011
    Assignee: Tokyo Weld Co., Ltd.
    Inventors: Tomoyuki Kojima, Shigeru Matsukawa, Hiroaki Abe
  • Patent number: 7119299
    Abstract: A work inspection system 2 includes: a conveyor table 7 vertically positioned, and conveying works W stored in work-storing pockets 9; a work inspection apparatus for inspecting the works stored in the work-storing pockets 9 of the conveyor table 7; and a sorting and ejecting apparatus 12 for sorting the inspected works stored in the work-storing pockets of the conveyor table in accordance with a property of the works and ejecting the same. The work-storing pockets 9 of the conveyor table 7 are positioned inside the periphery 7a of the conveyor table 7 to surround the works W. The work-storing pockets 9 are disposed along two concentric circles on the conveyor table 7.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: October 10, 2006
    Assignee: Tokyo Weld Co., Ltd.
    Inventors: Tomoyuki Kojima, Hiroaki Abe, Shigeru Matsukawa, Takahiko Iwazaki, Takayuki Yamauchi
  • Patent number: 6988609
    Abstract: A work measurement apparatus 1 comprises a base 2 and a conveyor table 3 which is slidably disposed on the base 2 and includes a work receiving opening 6. A guide plate 4 is fixedly disposed on the conveyor table 3. A guide entrance 5 is disposed in the guide plate 4 at the upper end of the work receiving opening 6. A measurement probe 8 is disposed on the upper side of the guide plate 4. The measurement probe 8 is urged towards the work W in the work receiving opening 6. The measurement probe 8 slides on the guide plate 4 as the conveyor table 3 is rotated. The measurement probe 8 is then directed by the guide entrance 5 to the work W in the work receiving opening 6 and makes contact with the work W. The measurement probe 8 exits from the guide entrance 5.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: January 24, 2006
    Assignee: Tokyo Weld Co., Ltd.
    Inventor: Tomoyuki Kojima
  • Patent number: 6948376
    Abstract: A work transferring and transporting apparatus has a plurality of transportation tables. A plurality of work holders for holding works are formed on the respective peripheral edge portions of the transportation tables. Each work is transferred between each pair of adjacent transportation tables and transported. A work transfer section is provided between the adjacent transportation tables. The adjacent transportation tables continuously rotate in synchronism with each other. In the work transfer section, the work having so far been held in one of the work holders of the one transportation table is transferred to one of the work holders of the other transportation table.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: September 27, 2005
    Assignee: Tokyo Weld Co., Ltd.
    Inventor: Fukashi Ogasawara
  • Publication number: 20040151569
    Abstract: A work transferring and transporting apparatus has a plurality of transportation tables. A plurality of work holders for holding works are formed on the respective peripheral edge portions of the transportation tables. Each work is transferred between each pair of adjacent transportation tables and transported. A work transfer section is provided between the adjacent transportation tables. The adjacent transportation tables continuously rotate in synchronism with each other. In the work transfer section, the work having so far been held in one of the work holders of the one transportation table is transferred to one of the work holders of the other transportation table.
    Type: Application
    Filed: December 24, 2003
    Publication date: August 5, 2004
    Applicant: Tokyo Weld Co., Ltd.
    Inventor: Fukashi Ogasawara
  • Patent number: 6727685
    Abstract: A work transfer apparatus includes a turn table with a plurality of work-storing pockets for storing works at the outer periphery of the turn table and a base slidably supporting the works stored in the work-storing pockets of the turn table. A probing detector is provided in the base, and the probing detector comes in contact with the works in the work-storing pockets. An entire portion of the base which comes in contact with the works is made of insulant material.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: April 27, 2004
    Assignee: Tokyo Weld Co., Ltd.
    Inventor: Tomoyuki Kojima
  • Patent number: 6642721
    Abstract: An object of the present invention is to easily, quickly and precisely measure an insulation resistance of an capacitor. An insulation resistance measurement apparatus of the present invention includes a variable/constant-voltage power source, voltmeter, intermittent circuit and constant-current supply circuit, constant-current sink circuit, test capacitor, current amplifier, and A/D converter and calculation processor. The intermittent circuit and constant-current supply circuit intermittently output a current based on a voltage supplied from variable/constant-voltage power source. When a constant voltage is intermittently applied to the test capacitor, the current flowing through the test capacitor is amplified by the current amplifier, and subsequently inputted to the A/D converter and calculation processor.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: November 4, 2003
    Assignee: Tokyo Weld Co., Ltd.
    Inventor: Masamichi Tsuchiya
  • Patent number: 6621261
    Abstract: A work inspection apparatus 10 includes a base 20, and a rotating turntable 11 arranged on the base 20 horizontally and provided with plural work holding pockets 12 on its periphery. A measuring electrode 13 is provided on the base 20, which is brought in contact with works W held in the work holding pockets 12 for inspecting their electric characteristics. Each of the work holding pockets 12 of the turntable 11 is opened outward. A polishing member 14 is mounted in at least one of the work holding pockets 12 of the turntable 11 for polishing the measuring electrode 13.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: September 16, 2003
    Assignee: Tokyo Weld Co., Ltd.
    Inventor: Masamichi Tsuchiya
  • Patent number: 6565309
    Abstract: An object of the present invention is to enable the orientations of chip components accommodated in groove portions of an index table to be assuredly uniformized. When a polarity judgment device finds that the orientation of the chip component accommodated in the groove portion of the index table is opposite, the polarity inversion apparatus according to the present invention moves the chip component to the component accommodating inversion portion by using compressed air and the intake air from air inlet/outlet ports. Since the bottom surface of the inlet of the inversion portion is set so as to be lower than the base surface under the index table and the width of the inlet of the inversion portion is set so as to be wider than the width of the groove portion, the chip component can move to the inversion portion without getting stuck in the vicinity of the boundary.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: May 20, 2003
    Assignee: Tokyo Weld Co., Ltd.
    Inventors: Masamichi Tsuchiya, Akira Takeoka, Masayuki Nishida
  • Patent number: 6547879
    Abstract: An electrode forming apparatus for electric parts has a tape and a driving mechanism. The tape has holding holes for holding board-shaped electric parts therein at regular intervals and feeding holes for feeding the tape at regular intervals. The driving mechanism can feed the tape by engaging with the feeding holes of the tape. A pasting unit applies electric conductive paste to the electric parts held by the holding holes of the tape fed by the driving mechanism, in order to form a electrode. Each of the holding holes has a pair of abutting edges for abutting on both opposite surfaces of the board-shaped electric parts and at least one cutout portion formed from the butting edges. Due to the above constitution, the board-shaped electric parts can be held and conveyed by the abutting edges of the holding hole.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: April 15, 2003
    Assignee: Tokyo Weld Co., Ltd.
    Inventors: Minoru Chiba, Akira Saito, Fukashi Ogasawara, Isao Kobayashi
  • Patent number: 6504384
    Abstract: The present invention prevents from occurring a measurement error of electrical capacitance based on variance of a voltage applied to capacitors. An apparatus of measuring capacitance has a power supply for applying a voltage to capacitors, a voltmeter of measuring the voltage applied to the capacitors W, and an amperemeter of measuring a current flowing through the capacitors. A capacitance measuring part is connected to the voltmeter and the amperemeter, and measures electrical capacitance and electrical positive electrode of the capacitors based on the voltage and the current applied to the capacitor. A determining part determines whether or not the voltage deflects from the voltage between upper-limit and lower-limit values. When the determining part determines that the voltage changes, the warning part performs warning.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: January 7, 2003
    Assignee: Tokyo Weld Co., Ltd.
    Inventors: Masamichi Tsuchiya, Takamasa Nagasawa
  • Patent number: D543333
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: May 22, 2007
    Assignee: Tokyo Weld Co., Ltd.
    Inventor: Tomoyuki Kojima