Patents by Inventor Hiroyasu Asaoka
Hiroyasu Asaoka 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: 9808976Abstract: When an injection member such as a screw injecting a molten material into a mold is attached to an injection molding machine, a buffer spacer is provided between the injection member and a power transmission member such as an injection shaft sleeve transmitting forward/backward moving power to the injection member. Then, the buffer spacer is fixed to the power transmission member by a bolt.Type: GrantFiled: October 30, 2015Date of Patent: November 7, 2017Assignee: FANUC CORPORATIONInventors: Hiroyasu Asaoka, Satoshi Yano
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Patent number: 9782920Abstract: A resin injection nozzle is provided with a first mating surface on an inner-diameter side and a second mating surface on an outer-diameter side relative to the first mating surface, and a through-hole is provided extending from a void defined between the first and second mating surfaces toward the distal end of the resin injection nozzle. Thus, gas generated from a molten resin can be effectively discharged.Type: GrantFiled: January 26, 2016Date of Patent: October 10, 2017Assignee: FANUC CORPORATIONInventors: Shoutarou Sekiguchi, Hiroyasu Asaoka
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Publication number: 20170113390Abstract: In an injection molding system, bolt position related information recognizing unit which recognizes an attachment position of a bolt for each attachment is provided. Based on the attachment position of the bolt, or the attachment position of the bolt and a phase of the bolt stored in the bolt position storage unit, bolt attaching and detaching unit attaches and detaches the bolt to and from the attachment. Thus, even if the position of the bolt varies in accordance with the attachment, it is possible to attach and detach the bolt by recognizing the attachment position of the bolt.Type: ApplicationFiled: October 21, 2016Publication date: April 27, 2017Inventor: Hiroyasu ASAOKA
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Publication number: 20160214295Abstract: A resin injection nozzle is provided with a first mating surface on an inner-diameter side and a second mating surface on an outer-diameter side relative to the first mating surface, and a through-hole is provided extending from a void defined between the first and second mating surfaces toward the distal end of the resin injection nozzle. Thus, gas generated from a molten resin can be effectively discharged.Type: ApplicationFiled: January 26, 2016Publication date: July 28, 2016Inventors: Shoutarou SEKIGUCHI, Hiroyasu ASAOKA
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Publication number: 20160129617Abstract: When an injection member such as a screw injecting a molten material into a mold is attached to an injection molding machine, a buffer spacer is provided between the injection member and a power transmission member such as an injection shaft sleeve transmitting forward/backward moving power to the injection member. Then, the buffer spacer is fixed to the power transmission member by a bolt.Type: ApplicationFiled: October 30, 2015Publication date: May 12, 2016Inventors: Hiroyasu ASAOKA, Satoshi YANO
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Patent number: 8790103Abstract: In a screw mounting structure of an injection molding machine in which a screw is fixed to a screw driving portion which transmits a rotating force and forward and backward thrusts to the screw, a fixing bushing for restricting movement of the screw in a rotating direction is fixed to the screw driving portion. A guide groove is formed in the fixing bushing in a direction orthogonal to a rotary axis of the screw, and retainers slide along the guide groove and are engaged with an engaging groove in a base portion of the screw, thereby restricting axial movement of the screw.Type: GrantFiled: July 14, 2012Date of Patent: July 29, 2014Assignee: Fanuc CorporationInventor: Hiroyasu Asaoka
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Publication number: 20130101692Abstract: In a screw mounting structure of an injection molding machine in which a screw is fixed to a screw driving portion which transmits a rotating force and forward and backward thrusts to the screw, a fixing bushing for restricting movement of the screw in a rotating direction is fixed to the screw driving portion. A guide groove is formed in the fixing bushing in a direction orthogonal to a rotary axis of the screw, and retainers slide along the guide groove and are engaged with an engaging groove in a base portion of the screw, thereby restricting axial movement of the screw.Type: ApplicationFiled: July 14, 2012Publication date: April 25, 2013Applicant: FANUC CORPORATIONInventor: Hiroyasu ASAOKA
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Molding material feed screw used in a molding material supply device of an injection molding machine
Patent number: 8192193Abstract: A notched region in which the outer periphery of a screw flight is cut out is provided in a molding material feed screw. A wedge-shaped portion is formed by both a front wall surface of the screw flight and a wall surface of the boundary where the outer periphery of the screw flight is cut out. As a result of rotation of the molding material feed screw, since the wedge-shaped portion advances while pushing aside resin pellets located in the front thereof in two lateral directions of the front wall surface of the screw flight and the wall surface of the boundary where the outer diameter of the screw flight is cut out, entrapment of the resin pellets between the edge of a material supply port of a molding material supply device and the outer periphery of the screw flight is avoided as much as possible.Type: GrantFiled: June 6, 2011Date of Patent: June 5, 2012Assignee: Fanuc CorporationInventors: Hiroyasu Asaoka, Junpei Maruyama, Wataru Shiraishi, Toshio Ishikuro, Akira Oomori -
Publication number: 20120040038Abstract: A notched region in which the outer periphery of a screw flight is cut out is provided in a molding material feed screw. A wedge-shaped portion is formed by both a front wall surface of the screw flight and a wall surface of the boundary where the outer periphery of the screw flight is cut out. As a result of rotation of the molding material feed screw, since the wedge-shaped portion advances while pushing aside resin pellets located in the front thereof in two lateral directions of the front wall surface of the screw flight and the wall surface of the boundary where the outer diameter of the screw flight is cut out, entrapment of the resin pellets between the edge of a material supply port of a molding material supply device and the outer periphery of the screw flight is avoided as much as possible.Type: ApplicationFiled: June 6, 2011Publication date: February 16, 2012Applicant: FANUC CORPORATIONInventors: Hiroyasu ASAOKA, Junpei MARUYAMA, Wataru SHIRAISHI, Toshio ISHIKURO, Akira OOMORI
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Patent number: 7665978Abstract: A mold is mounted with a locating ring mated into a hole in a stationary platen. A distance measuring unit is disposed to the side of the injection nozzle. The distance A between the sprue hole and the outer circumference of the locating ring and the distance B between the distance measuring unit and the outer circumference of the locating ring are both known. The distance C between the central axis of the nozzle hole and the side of the injection nozzle is also known. If the distance D to the side of the injection nozzle is measured by means of the distance measuring unit, the displacement between the central axis of the sprue hole and the central axis of the nozzle hole is obtained by calculating {(A+B)?(C+D)}. The injection nozzle is centered by being moved manually or automatically by the amount corresponding to the displacement.Type: GrantFiled: January 13, 2005Date of Patent: February 23, 2010Assignee: Fanuc LtdInventors: Satoshi Takatsugi, Wataru Shiraishi, Toshio Ishikuro, Hiroyasu Asaoka, Hiroshi Imamura
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Publication number: 20080317897Abstract: An injection molding machine nozzle capable of letting heat escape from a nozzle end portion and preventing the occurrence of cobwebbing with a simple structure. A heat conducting member is mounted on the nozzle end portion. When the end of the nozzle is contacted against a mold the heat conducting member also contacts the mold. The heat conducting member is composed of the material having heat conductivity equal to or greater than that of the nozzle. The heat of the nozzle end portion is conducted to the heat conducting member and released at the mold, thus preferentially cooling only melted resin of the nozzle end portion. Cobwebbing does not occur even when the mold is opened and the molded article is removed because the melted resin of the muzzle end portion has been cooled.Type: ApplicationFiled: June 16, 2008Publication date: December 25, 2008Applicant: FANUC LTDInventors: Hiroyasu ASAOKA, Wataru SHIRAISHI, Satoshi Takatsugi
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Patent number: 7435070Abstract: When a metering process is started, a screw rotates at a preset rotating speed, thereby carrying out back pressure control to keep the pressure of a resin at a preset pressure, and retreats. When the screw is located near a preset metering completion position, the control mode is switched to positioning control for the preset metering completion position, and a screw rotation stop command is outputted. The screw overruns for some distance before its rotation stops after it retreats and stops at the preset metering completion position. A resin quantity for the overrun is corrected to obtain a preset metered resin quantity by reversely rotating the screw by a rotational amount corresponding to the overrun.Type: GrantFiled: April 28, 2006Date of Patent: October 14, 2008Assignee: Fanuc Ltd.Inventors: Wataru Shiraishi, Satoshi Takatsugi, Toshio Ishikuro, Hiroyasu Asaoka
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Patent number: 7431583Abstract: The invention provides an injection molding capable of adjusting a detection level with a simple structure and detecting a deposit level of the resin pellets near a plasticizing screw. A cooling jacket is mounted so that a resin supplying hole of the cooling jacket communicates with a resin supplying hole of a heating cylinder. A sensor head mounted on a sensor mounting plate is inserted into the resin supplying hole through a sensor insertion port provided on a hopper plate and a resin inlet and detects the deposit level of the resin pellets deposited in the resin supplying hole. Changing the extent of insertion of the sensor head enables the resin pellets deposit detection level to be changed, and further, enables the deposit level near the outer periphery of the screw to be detected. Setting the sensor detection direction perpendicular to the resin deposit direction enables dirtying of the sensor detection surface by the resin pellets to be reduced, thus enabling erroneous detection readings to be reduced.Type: GrantFiled: July 24, 2006Date of Patent: October 7, 2008Assignee: Fanuc LtdInventors: Satoshi Takatsugi, Wataru Shiraishi, Hiroyasu Asaoka, Toshio Ishikuro, Hiroshi Imamura
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Patent number: 7235198Abstract: When a metering process is started, a screw rotates at a preset rotating speed, thereby carrying out back pressure control to keep the pressure of a resin at a preset pressure, and retreats. When the screw is located near a preset metering completion position, the control mode is switched to positioning control for the preset metering completion position, and a screw rotation stop command is outputted. The screw overruns for some distance before its rotation stops after it retreats and stops at the preset metering completion position. A resin quantity for the overrun is corrected to obtain a preset metered resin quantity by reversely rotating the screw by a rotational amount corresponding to the overrun.Type: GrantFiled: November 7, 2003Date of Patent: June 26, 2007Assignee: Fanuc Ltd.Inventors: Wataru Shiraishi, Satoshi Takatsugi, Toshio Ishikuro, Hiroyasu Asaoka
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Publication number: 20070026096Abstract: The invention provides an injection molding capable of adjusting a detection level with a simple structure and detecting a deposit level of the resin pellets near a plasticizing screw. A cooling jacket is mounted so that a resin supplying hole of the cooling jacket communicates with a resin supplying hole of a heating cylinder. A sensor head mounted on a sensor mounting plate is inserted into the resin supplying hole through a sensor insertion port provided on a hopper plate and a resin inlet and detects the deposit level of the resin pellets deposited in the resin supplying hole. Changing the extent of insertion of the sensor head enables the resin pellets deposit detection level to be changed, and further, enables the deposit level near the outer periphery of the screw to be detected. Setting the sensor detection direction perpendicular to the resin deposit direction enables dirtying of the sensor detection surface by the resin pellets to be reduced, thus enabling erroneous detection readings to be reduced.Type: ApplicationFiled: July 24, 2006Publication date: February 1, 2007Applicant: FANUC LTDInventors: Satoshi Takatsugi, Wataru Shiraishi, Hiroyasu Asaoka, Toshio Ishikuro, Hiroshi Imamura
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Publication number: 20060193943Abstract: When a metering process is started, a screw rotates at a preset rotating speed, thereby carrying out back pressure control to keep the pressure of a resin at a preset pressure, and retreats. When the screw is located near a preset metering completion position, the control mode is switched to positioning control for the preset metering completion position, and a screw rotation stop command is outputted. The screw overruns for some distance before its rotation stops after it retreats and stops at the preset metering completion position. A resin quantity for the overrun is corrected to obtain a preset metered resin quantity by reversely rotating the screw by a rotational amount corresponding to the overrun.Type: ApplicationFiled: April 28, 2006Publication date: August 31, 2006Applicant: FANUC LTDInventors: Wataru shiraishi, Satoshi Takatsugi, Toshio Ishikuro, Hiroyasu Asaoka
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Publication number: 20050161848Abstract: A mold is mounted with a locating ring mated into a hole in a stationary platen. A distance measuring unit is disposed to the side of the injection nozzle. The distance A between the sprue hole and the outer circumference of the locating ring and the distance B between the distance measuring unit and the outer circumference of the locating ring are both known. The distance C between the central axis of the nozzle hole and the side of the injection nozzle is also known. If the distance D to the side of the injection nozzle is measured by means of the distance measuring unit, the displacement between the central axis of the sprue hole and the central axis of the nozzle hole is obtained by calculating {(A+B)?(C+D)}. The injection nozzle is centered by being moved manually or automatically by the amount corresponding to the displacement.Type: ApplicationFiled: January 13, 2005Publication date: July 28, 2005Inventors: Satoshi Takatsugi, Wataru Shiraishi, Toshio Ishikuro, Hiroyasu Asaoka, Hiroshi Imamura
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Publication number: 20040096534Abstract: When a metering process is started, a screw rotates at a preset rotating speed, thereby carrying out back pressure control to keep the pressure of a resin at a preset pressure, and retreats. When the screw is located near a preset metering completion position, the control mode is switched to positioning control for the preset metering completion position, and a screw rotation stop command is outputted. The screw overruns for some distance before its rotation stops after it retreats and stops at the preset metering completion position. A resin quantity for the overrun is corrected to obtain a preset metered resin quantity by reversely rotating the screw by a rotational amount corresponding to the overrun.Type: ApplicationFiled: November 7, 2003Publication date: May 20, 2004Applicant: Fanuc Ltd.Inventors: Wataru Shiraishi, Satoshi Takatsugi, Toshio Ishikuro, Hiroyasu Asaoka
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Patent number: 4198416Abstract: 5-Alkoxy-picolinic esters represented by the formula (I): ##STR1## wherein R represents an alkyl group having 1 to 6 carbon atoms and R.sub.1 represents an unsubstituted phenyl group; a phenyl group substituted with one or more of an alkyl group having 1 to 4 carbon atoms or an acetyl group; a phthalidyl group; an alkoxyalkyl group wherein the alkyl moiety and the alkoxy moiety each has 1 to 4 carbon atoms; an alkoxyalkoxyalkyl group wherein the alkyl moiety and the alkoxy moiety each has 1 to 4 carbon atoms; an indanyl group; or an acyloxyalkyl group having the formula ##STR2## wherein R.sub.2 represents a hydrogen atom or a methyl group and R.sub.3 represents an alkyl group having 1 to 5 carbon atoms (such as a methyl, n-propyl, isobutyl, t-butyl, etc.Type: GrantFiled: September 22, 1978Date of Patent: April 15, 1980Assignee: Meiji Seika Kaisha, Ltd.Inventors: Takemi Koeda, Takashi Tsuruoka, Uichi Shibata, Hiroyasu Asaoka, Mitsugu Hachisu, Osamu Itoh, Yasuharu Sekizawa, Shigeharu Inouye, Taro Niida
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Patent number: 4189489Abstract: 5-Alkoxy-picolinic acids and the salts and the esters thereof represented by the formula (I): ##STR1## wherein R represents an alkyl group having 1 to 6 carbon atoms and M represents a hydrogen atom; a calcium atom; a sodium atom; a potassium atom; an aluminum atom; an unsubstituted phenyl group; a phenyl group substituted with one or more of an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or a halogen atom (such as a chlorine, bromine, iodine, etc., atom); a phthalidyl group; an alkoxyalkyl group wherein the alkyl moiety and the alkoxy moiety each has 1 to 4 carbon atoms; or an acyloxyalkyl group having the formula ##STR2## wherein R.sub.2 represents a hydrogen atom or a methyl group and R.sub.3 represents an alkyl group having 1 to 5 carbon atoms (such as a methyl, n-propyl, isobutyl, t-butyl, etc.Type: GrantFiled: September 30, 1977Date of Patent: February 19, 1980Assignee: Meiji Seika Kaisha, Ltd.Inventors: Takemi Koeda, Takashi Tsuruoka, Uichi Shibata, Hiroyasu Asaoka, Mitsugu Hachisu, Osamu Itoh, Yasuharu Sekizawa, Shigeharu Inouye, Taro Niida