Patents by Inventor Yoji Fujita
Yoji Fujita 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).
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Patent number: 11437889Abstract: A work device including a cover provided on a base to form a work space between the cover and the base; a linear motor disposed in the work space having an extended stator and a movable element moving along the stator in a transfer direction; and a work executing section provided on the movable element to execute a predetermined work; wherein the movable element includes: a heat-dissipating section to dissipate heat generated from a constituent member to air, the constituent member constituting at least one of the movable element and the work executing section; a duct, covering the heat-dissipating section, having an intake port and an exhaust port; and a blower to blow the air from the intake port of to the exhaust port.Type: GrantFiled: September 25, 2017Date of Patent: September 6, 2022Assignee: FUJI CORPORATIONInventors: Yoji Fujita, Yusuke Yamakage
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Patent number: 11229148Abstract: A component mounting machine that performs mounting of components by moving a mounting head attached to slide using linear motor, stator of the linear motor that is forms of magnets arranged side by side is arranged on base, movable element is fixed to a slide so as to pass through the stator, and bracket for holding a portion of wires for supplying power to the linear motor and wire protector is fixed to the movable element. Since the bracket is located at a position close to the axis line of the movable element, the rotational moment acting on the slide due to the deformation resistance of the wires and the wire protector caused by the movement of the slide is reduced, and appropriate movement of the slide is ensured.Type: GrantFiled: July 18, 2017Date of Patent: January 18, 2022Assignee: FUJI CORPORATIONInventors: Yusuke Yamakage, Yoji Fujita
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Patent number: 11207879Abstract: There is provided a screen printer including: a squeegee device for spreading a cream solder over a mask having formed thereon a printing pattern configured of a plurality of through holes to force the cream solder through the printing pattern; a clamping device for holding a board that is conveyed to be placed under the mask; and a lift device for disposing the board with respect to the mask in relation to a vertical direction, wherein the clamping device includes a pair of clamping portions for holding the board therebetween from a width direction, wherein the pair of clamping portions includes individually detachable clamping members that are brought into abutment with lateral end faces of the board, and wherein the clamping members individually have two or more clamping surfaces that are brought into abutment with the board in such a way that the clamping surfaces can be converted.Type: GrantFiled: February 24, 2016Date of Patent: December 28, 2021Assignee: FUJI CORPORATIONInventors: Ritsuo Hirukawa, Yoji Fujita, Takeshi Kondo, Shoji Fukakusa, Yoshimune Yokoi, Naoki Matsuzaki
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Publication number: 20210016558Abstract: There is provided a screen printer including: a squeegee device for spreading a cream solder over a mask having formed thereon a printing pattern configured of a plurality of through holes to force the cream solder through the printing pattern; a clamping device for holding a board that is conveyed to be placed under the mask; and a lift device for disposing the board with respect to the mask in relation to a vertical direction, wherein the clamping device includes a pair of clamping portions for holding the board therebetween from a width direction, wherein the pair of clamping portions includes individually detachable clamping members that are brought into abutment with lateral end faces of the board, and wherein the clamping members individually have two or more clamping surfaces that are brought into abutment with the board in such a way that the clamping surfaces can be converted.Type: ApplicationFiled: February 24, 2016Publication date: January 21, 2021Applicant: FUJI CORPORATIONInventors: Ritsuo HIRUKAWA, Yoji FUJITA, Takeshi KONDO, Shoji FUKAKUSA, Yoshimune YOKOI, Naoki MATSUZAKI
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Publication number: 20200390011Abstract: A component mounting machine that performs mounting of components by moving a mounting head attached to slide using linear motor, stator of the linear motor that is forms of magnets arranged side by side is arranged on base, movable element is fixed to a slide so as to pass through the stator, and bracket for holding a portion of wires for supplying power to the linear motor and wire protector is fixed to the movable element. Since the bracket is located at a position close to the axis line of the movable element, the rotational moment acting on the slide due to the deformation resistance of the wires and the wire protector caused by the movement of the slide is reduced, and appropriate movement of the slide is ensured.Type: ApplicationFiled: July 18, 2017Publication date: December 10, 2020Applicant: FUJl CORPORATIONInventors: Yusuke YAMAKAGE, Yoji FUJITA
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Patent number: 10798861Abstract: A mounter capable of curtailing interference between a mounting head that has a component holding section, and an exchange-use component holding section and a storage section that holds the exchange-use component holding section. A controller of the mounter reads head identification information for identifying the mounting head from the mounting head. Also, different quantities of protruding sections are formed on nozzle tray in accordance with the height in the Z-axis direction. Also, pressure switches that are pressed by protruding sections so as to turn on and off are provided on loading plate on which nozzle tray is loaded. By this, the controller is able to determine whether interference will occur between the mounting head and nozzle tray based on the detection signal of the pressure switches before the mounting head is moved.Type: GrantFiled: November 6, 2015Date of Patent: October 6, 2020Assignee: FUJI CORPORATIONInventors: Koji Kawaguchi, Kohei Sugihara, Yoji Fujita
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Publication number: 20200303995Abstract: A work device including a cover provided on a base to form a work space between the cover and the base; a linear motor disposed in the work space having an extended stator and a movable element moving along the stator in a transfer direction; and a work executing section provided on the movable element to execute a predetermined work; wherein the movable element includes: a heat-dissipating section to dissipate heat generated from a constituent member to air, the constituent member constituting at least one of the movable element and the work executing section; a duct, covering the heat-dissipating section, having an intake port and an exhaust port; and a blower to blow the air from the intake port of to the exhaust port.Type: ApplicationFiled: September 25, 2017Publication date: September 24, 2020Applicant: FUJI CORPORATIONInventors: Yoji FUJITA, Yusuke YAMAKAGE
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Publication number: 20190159373Abstract: A mounter capable of curtailing interference between a mounting head that has a component holding section, and an exchange-use component holding section and a storage section that holds the exchange-use component holding section. A controller of the mounter reads head identification information for identifying the mounting head from the mounting head. Also, different quantities of protruding sections are formed on nozzle tray in accordance with the height in the Z-axis direction. Also, pressure switches that are pressed by protruding sections so as to turn on and off are provided on loading plate on which nozzle tray is loaded. By this, the controller is able to determine whether interference will occur between the mounting head and nozzle tray based on the detection signal of the pressure switches before the mounting head is moved.Type: ApplicationFiled: November 6, 2015Publication date: May 23, 2019Applicant: FUJI CORPORATIONInventors: Koji KAWAGUCHI, Kohei SUGIHARA, Yoji FUJITA
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Patent number: 9883597Abstract: A solder supply device provided with a solder cup housing liquid solder that is tubular and open at one end; a nozzle section, for ejecting solder from the solder container, that is inserted into the solder container; a flange section that is provided on an outer circumferential section of the nozzle section and that is engaged inside of the solder cup; and an outer tube that demarcates an air chamber with the bottom surface of the solder cup. Solder is supplied from the tip of the nozzle section by the solder cup and the flange section being relatively moved by supplying air to the air chamber. Solder is supplied from the solder container without using an air cylinder, electromagnetic motor, or the like.Type: GrantFiled: December 5, 2013Date of Patent: January 30, 2018Assignee: FUJI MACHINE MFG. CO., LTD.Inventors: Akihiro Senga, Shoji Fukakusa, Ritsuo Hirukawa, Yoji Fujita, Yoshimune Yokoi
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Patent number: 9860995Abstract: A solder supply system that judges whether a solder cup is set on a solder supply device. In a case in which it is judged that the solder cup is set on the solder supply device, reading a barcode by a barcode reader is allowed. In contrast, in a case in which it is judged that the solder cup is not set on the solder supply device, reading a barcode by the barcode reader is restricted. That is, reading a barcode by the barcode reader before the solder cup is set inside an outer tube is restricted, while reading a barcode by the barcode reader is allowed when the solder container is set inside the outer tube.Type: GrantFiled: February 26, 2014Date of Patent: January 2, 2018Assignee: FUJI MACHINE MFG. CO., LTD.Inventors: Mitsuaki Kato, Yoji Fujita
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Patent number: 9802264Abstract: A solder supply device is provided with a solder cup housing liquid solder that is cylindrical and open at one end; a nozzle section, for ejecting solder from the solder container, that is inserted into the solder container; a flange section that is provided on an outer circumferential section of the nozzle section and that is engaged inside of the solder cup; solder supplied from the tip of the nozzle section by the solder cup being moved; a magnet provided in the outer circumferential surface of the solder cup; and magnetic sensors able to detect the approaching of the magnet are provided at a position facing the outer circumferential surface of the solder container. Based on the positions of the magnet and the sensor, the post-movement position of the solder container is detected. Thus, it can be detected that solder has run out from inside the solder cup.Type: GrantFiled: December 18, 2013Date of Patent: October 31, 2017Assignee: FUJI MACHINE MFG. CO., LTD.Inventor: Yoji Fujita
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Publication number: 20170055351Abstract: A solder supply system that judges whether a solder cup is set on a solder supply device. In a case in which it is judged that the solder cup is set on the solder supply device, reading a barcode by a barcode reader is allowed. In contrast, in a case in which it is judged that the solder cup is not set on the solder supply device, reading a barcode by the barcode reader is restricted. That is, reading a barcode by the barcode reader before the solder cup is set inside an outer tube is restricted, while reading a barcode by the barcode reader is allowed when the solder container is set inside the outer tube.Type: ApplicationFiled: February 26, 2014Publication date: February 23, 2017Applicant: FUJI MACHINE MFG. CO., LTD.Inventors: Mitsuaki KATO, Yoji FUJITA
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Publication number: 20160338209Abstract: A solder supply device provided with a solder cup housing liquid solder that is tubular and open at one end; a nozzle section, for ejecting solder from the solder container, that is inserted into the solder container; a flange section that is provided on an outer circumferential section of the nozzle section and that is engaged inside of the solder cup; and an outer tube that demarcates an air chamber with the bottom surface of the solder cup. Solder is supplied from the tip of the nozzle section by the solder cup and the flange section being relatively moved by supplying air to the air chamber. Solder is supplied from the solder container without using an air cylinder, electromagnetic motor, or the like.Type: ApplicationFiled: December 5, 2013Publication date: November 17, 2016Applicant: FUJI MACHINE MFG. CO., LTDInventors: Akihiro SENGA, Shoji FUKAKUSA, Ritsuo HIRUKAWA, Yoji FUJITA, Yoshimune YOKOI
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Publication number: 20160303675Abstract: A solder supply device is provided with a solder cup housing liquid solder that is cylindrical and open at one end; a nozzle section, for ejecting solder from the solder container, that is inserted into the solder container; a flange section that is provided on an outer circumferential section of the nozzle section and that is engaged inside of the solder cup; solder supplied from the tip of the nozzle section by the solder cup being moved; a magnet provided in the outer circumferential surface of the solder cup; and magnetic sensors able to detect the approaching of the magnet are provided at a position facing the outer circumferential surface of the solder container. Based on the positions of the magnet and the sensor, the post-movement position of the solder container is detected and it is detected that solder has run out from inside the solder cup.Type: ApplicationFiled: December 18, 2013Publication date: October 20, 2016Applicant: FUJI MACHINE MFG. CO., LTD.Inventor: Yoji FUJITA
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Patent number: 9073301Abstract: A screen printing machine configured to move a squeegee by a squeegee moving device along a mask to print solder on a substrate through a through hole of the mask is improved in size and usability. A squeegee-device main body is fixed to a mask frame receiver for holding a mask frame, and a squeegee slide, a squeegee head, and a squeegee-slide driving device are provided on the main body. A position adjusting device including two front/rear-direction adjusting units, one right/left-direction adjusting unit, and one floating support unit is provided between a main body frame of the screen printing machine, and the mask frame receiver and the squeegee-device main body to adjust relative positions of the mask and the substrate by moving the mask frame receiver and the squeegee-device main body together with each other.Type: GrantFiled: April 25, 2011Date of Patent: July 7, 2015Assignee: FUJI MACHINE MFG. CO., LTD.Inventors: Takeshi Kondo, Ritsuo Hirukawa, Yoji Fujita
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Patent number: 8883391Abstract: Disclosed is a positive-type photosensitive resin composition which has excellent storage stability, particularly excellent sensitivity stability, and can be formed into a cured film having excellent adhesion onto a substrate when heated at 350° C. or higher or heated in the air. The positive-type photosensitive resin composition comprises (a) a polymer having, as the main component, at least one structure selected from the group consisting of a polyimide precursor structure, a polybenzoxazole precursor structure, and a polyimide structure, (b) a quinonediazide compound, (c) a silane coupling agent having a styryl group, (d) a silane coupling agent having an epoxy group, an oxetanyl group, a methacryloxy group, an acryloxy group, an amino group, an amide group or mercapto group and an alkoxysilyl group, and (e) a solvent.Type: GrantFiled: December 7, 2010Date of Patent: November 11, 2014Assignee: Toray Industries, Inc.Inventors: Tomotsugu Miyabe, Yoji Fujita
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Publication number: 20130087057Abstract: A screen printing machine configured to move a squeegee by a squeegee moving device along a mask to print solder on a substrate through a through hole of the mask is improved in size and usability. A squeegee-device main body is fixed to a mask frame receiver for holding a mask frame, and a squeegee slide, a squeegee head, and a squeegee-slide driving device are provided on the main body. A position adjusting device including two front/rear-direction adjusting units, one right/left-direction adjusting unit, and one floating support unit is provided between a main body frame of the screen printing machine, and the mask frame receiver and the squeegee-device main body to adjust relative positions of the mask and the substrate by moving the mask frame receiver and the squeegee-device main body together with each other.Type: ApplicationFiled: April 25, 2011Publication date: April 11, 2013Applicant: FUJI MACHINE MFG. CO., LTD.Inventors: Takeshi Kondo, Ritsuo Hirukawa, Yoji Fujita
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Publication number: 20120251949Abstract: Disclosed is a positive-type photosensitive resin composition which has excellent storage stability, particularly excellent sensitivity stability, and can be formed into a cured film having excellent adhesion onto a substrate when heated at 350° C. or higher or heated in the air. The positive-type photosensitive resin composition comprises (a) a polymer having, as the main component, at least one structure selected from the group consisting of a polyimide precursor structure, a polybenzoxazole precursor structure, and a polyimide structure, (b) a quinonediazide compound, (c) a silane coupling agent having a styryl group, (d) a silane coupling agent having an epoxy group, an oxetanyl group, a methacryloxy group, an acryloxy group, an amino group, an amide group or mercapto group and an alkoxysilyl group, and (e) a solvent.Type: ApplicationFiled: December 7, 2010Publication date: October 4, 2012Applicant: TORAY INDUSTRIES, INC.Inventors: Tomotsugu Miyabe, Yoji Fujita
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Patent number: 8158324Abstract: A positive-type photosensitive resin composition, including: (a) a novolac resin; (b) a polymer including, as a main component, a structure represented by formula (1) and/or formula (2): ?(wherein R1 and R2 may be the same or different and each represent an organic group having at least two carbon atoms and a valence of 2 to 8, R3 and R4 may be the same or different and each represent hydrogen or a monovalent organic group of 1 to 20 carbon atoms, —NH—R5 in formula (1) and —CO—R6 in formula (2) each represent a polymer end group, R5 and R6 each represent a monovalent organic group having 2 to 30 carbon atoms which includes an unsaturated hydrocarbon group, n is in the range of 10 to 100,000, l and m each represent an integer of 0 to 2, and p and q each represent an integer of 0 to 4, provided that p+q>0; (c) a quinone diazide compound; (d) an alkoxymethyl group-containing compound; and (e) a solvent.Type: GrantFiled: February 5, 2008Date of Patent: April 17, 2012Assignee: TORAY Industries, Inc.Inventors: Yoji Fujita, Shinji Arimoto, Rinsei Ike
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Patent number: 7977028Abstract: The present invention provides a photosensitive resin composition comprising (a) an alkali-soluble resin, (b) a silicon compound having a secondary aromatic amino group and an alkoxy group, and (c) at least one selected from a photopolymerization initiator, a photo acid generator and a photo base generator. According to the present invention, it is possible to obtain a photosensitive resin composition which remarkably enhances the adhesion property with a substrate after curing without deteriorating storage stability of a solution, and does not cause peeling of a fine pattern even upon development.Type: GrantFiled: April 18, 2006Date of Patent: July 12, 2011Assignee: Toray Industries, Inc.Inventors: Tomoyuki Yuba, Yoji Fujita, Masao Tomikawa