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公开(公告)号：JP5278880B2
公开(公告)日：2013-09-04
申请号：JP2010050015
申请日：2010-03-08
Applicant: 株式会社向洋技研
Abstract: PROBLEM TO BE SOLVED: To provide a welding machine which is provided with two or more welding guns on a flat plate-like electrode and performs spot welding and which has no explosive fire, is safe and has good operability. SOLUTION: In a spot welding machine, an upper electrode erected on the flat plate-like electrode 30 where an object to be welded is mounted is constituted of a plurality of the welding guns 2, 3. Primarily, a large object to be welded of a frame shape is welded by using one welding gun 2 with a horizontal attitude and another welding gun 3 with a vertical attitude. A power supply apparatus 4 having a piston cylinder mechanism is provided at the power supply route of each welding gun and contact/separation of a pressing power supply body with/from a power receiving plate energizes only the predetermined welding gun. COPYRIGHT: (C)2011,JPO&INPIT
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Patent Agency Ranking
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公开(公告)号：JP5278883B2
公开(公告)日：2013-09-04
申请号：JP2011196008
申请日：2011-09-08
Applicant: 株式会社向洋技研
Abstract: PROBLEM TO BE SOLVED: To propose a safe and high-quality laser welding method that enables short-time and efficient multi-point welding to be performed by a simple and conventional device as a countermeasure for the disadvantage of laser welding because of low welding strength per spot welding point. SOLUTION: In the laser spot welding method, a laser light emission nozzle (1) is pressed to a workpiece (W) of two overlapped metallic material plates, and a blocking gas chamber (7) is formed. An oscillating plate (15) is operated by the rotation of an eccentric shaft (16) and a laser light emission unit (14) is rotated and oscillated, and after a plurality of welding nuggets are formed like an arc, a blocking gas, a melting gas and fume are discharged. COPYRIGHT: (C)2013,JPO&INPIT
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公开(公告)号：JP5278879B2
公开(公告)日：2013-09-04
申请号：JP2010039541
申请日：2010-02-25
Applicant: 株式会社向洋技研
Abstract: PROBLEM TO BE SOLVED: To provide a welding electrode for spot welding which allows a welding tip used for a welding gun of a spot welding machine to be easily replaced without leakage of cooling water during replacement and has high cooling effect. SOLUTION: A cooling water shutoff device (5) is internally arranged at an electrode rod shank (2) mounted on a tip of a welding gun body (12). A valve body (6) and a valve seat (8) abut on or separate from each other by spring pressure of a spring member (7) urging the valve body (6) of the cooling water shutoff device (5) by attaching/detaching the welding tip (1), so that cooling water is released or shut off. COPYRIGHT: (C)2011,JPO&INPIT
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公开(公告)号：JP5220931B1
公开(公告)日：2013-06-26
申请号：JP2012042873
申请日：2012-02-29
Applicant: 株式会社向洋技研
CPC classification number: H01F38/085 , B23K11/115 , B23K11/241 , B23K2201/18 , H01F2027/408
Abstract: [Problem] To enable fast and precise welding control for large current, as well as to reduce power consumption. [Solution] A welding transformer is provided with a ring-shaped core (25), a split primary coil (12), and a plurality of positive coils (14) and plurality of negative coils (16) alternately positioned one by one in the gaps (12a) of the primary coil (12). The plurality of positive coils (14) and plurality of negative coils (16) form a secondary coil. The positive coils (14) are electrically connected to a positive conductor (30) via a first connecting plate (44). The negative coils (16) are electrically connected to a negative conductor (32) via a second connecting plate (46). The connection between each positive coil (14) and negative coil (16) is electrically connected to a third connecting plate (48). The positive conductor (30), a rectifier element (18), and a first plate (34) are disposed on one side of a thin insulating layer (31), and the negative conductor (32), a rectifier element (20), and a second plate (36) are disposed on the other side. The first plate (34) and second plate (36) are electrically connected to a third plate (38). Thereby, a small welding transformer with high capacity can be achieved.
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公开(公告)号：JP5199493B1
公开(公告)日：2013-05-15
申请号：JP2012036101
申请日：2012-02-22
Applicant: 株式会社向洋技研
Abstract: 【課題】高速で精密な溶接制御をし消費電力も節減する。
【解決手段】２次側で、正側コイル１４の一端に一方の整流素子１８の一端を接続し、負側コイル１６の一端に他方の整流素子２０の一端を接続し、一方の整流素子１８の他端と他方の整流素子２０の他端をプラス電極２２に接続し、正側コイルの他端と負側コイルの他端をマイナス電極２４に接続する。 １次コイルには、インバータにより一定の繰り返し周波数で極性を反転させるパルス状の１次電流が供給されている。 正側コイル１４と負側コイル１６の間に１次コイル１２を挟む。 正側コイル１４の一端は第１連結極板４４を介して正側導体３０に電気接続され、負側コイル１６の一端は第２連結極板４６を介して負側導体３２に電気接続される。 正側導体３０と負側導体３２とを絶縁層を介して密着させた。 転流時間を短くし、高い周波数のインバータ制御が可能になる。
【選択図】図８
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