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1. 发明专利

JP2000288676A MACHINE AND DEVICE FOR HOT UPSETTING OF BAR STOCK END PART 失效
公开(公告)号：JP2000288676A
公开(公告)日：2000-10-17
申请号：JP9620799
申请日：1999-04-02
申请人： DAI ICHI HIGH FREQUENCY CO LTD
发明人： KISHIHARA SHIGEKI , KUROKAWA YUJI , MAENOZONO TSUKASA , TOMOTA ISAMU , SAKAMOTO AKIRA
IPC分类号： B21J5/08 , B21J9/06 , B21J9/08 , B21J13/04 , E04G21/12
摘要： PROBLEM TO BE SOLVED: To provide a device for forming a disk-like diameter expanding part by applying hot upsetting to the end part of a reinforcing bar. SOLUTION: A plurality of horizontal guide rods 7 are provided between a first frame 6A and a second frame 6B, a die supporting block 8 which holds a die 10 is movably held by the guide rods 7, a clamp device 12 which clamps a reinforcing bar 1 is attached to the first frame 6A and also a cylinder device 38 which moves the die supporting block 8 is attached to the second frame 6B, and further a heating head 31 which heats the end part of the reinforcing bar is arranged in front of the die 10. Thus, the reinforcing bar 1 is clamped by the clamp device 12, the tip end is heated by the heating head 31, thereafter the die 10 is pressed against the end surface of the reinforcing bar, the diameter of the reinforcing bar is expanded by compressing the bar in the axial direction, thereby forming a disk-like diameter expanding part.

2. 发明专利

JPH08229749A DIAMETER CONTRACTING METHOD AND EXTRACT METHOD FOR BRANCH PIPE 失效
公开(公告)号：JPH08229749A
公开(公告)日：1996-09-10
申请号：JP5655295
申请日：1995-02-21
申请人： DAI ICHI HIGH FREQUENCY CO LTD
发明人： MAENOZONO TSUKASA , YOSHIDA HIROTAKA , KUROKAWA YUJI , KUMAKAWA MAKOTO , TERASAKI MASANORI
IPC分类号： B23P19/02 , F22B37/58
摘要： PURPOSE: To facilitate extracting by efficiently contracting a diameter in a spread pipe working part of a branch pipe fixed to a hole of a pipe support plate. CONSTITUTION: A narrow width section 3g in one end of a spread pipe working part 3b, fixed by pipe spreading to a hole 2 of a pipe support plate 1, is annularly heated from inside a branch pipe to be placed in a red heat condition, and by applying tensile force to act in a pipe end, the narrow width section in the red heat condition is pulled, made to yield and diametrically contracted. Next by performing the same action in an adjacent narrow width section 3h, hereafter by repeatedly performing the same action by moving one by one a position of the red heated narrow width section, almost a total region of the spread pipe working part 3b, fixed to the pipe support plate, is diametrically contracted, and the pipe can be easily extracted.

3. 发明专利

JPH08192373A METHOD AND DEVICE FOR ELIMINATING BRANCH PIPE 失效
公开(公告)号：JPH08192373A
公开(公告)日：1996-07-30
申请号：JP2117395
申请日：1995-01-13
申请人： DAI ICHI HIGH FREQUENCY CO LTD
发明人： FUJITA MASATSUGU , HATTORI MASAYUKI , KUROKAWA YUJI , KAYANO HOTAKA
IPC分类号： B25B27/02 , B23P19/04 , F22B37/58
摘要： PURPOSE: To efficiently eliminate a branch pipe fixed to a hole of a pipe supporting plate. CONSTITUTION: An insertion part 3a of a branch pipe 3 in relation to a pipe supporting plate 1 is heated from the inner surface, and cooled so as to reduce the diameter thereof, and the branch pipe 3 is loosed from a hole 2. An area D of the branch pipe 3 under the pipe supporting plate 1 is circularly heated so as to apply the tensile force in the direction for separating the branch pipe from the pipe supporting plate 1 to the tip of the branch pipe, and the circular heated part is pulled for breakdown, while the branch pipe chip of the tip side is drawn from the pipe supporting plate 1.

4. 发明专利

JP2005305599A Method for removing branch pipe 审中-公开
标题翻译：拆卸分支管的方法
公开(公告)号：JP2005305599A
公开(公告)日：2005-11-04
申请号：JP2004126278
申请日：2004-04-22
申请人： Dai Ichi High Frequency Co Ltd , 第一高周波工業株式会社
发明人： YOSHIDA HIROTAKA , SATO MICHIO , KUROKAWA YUJI
IPC分类号： B23P21/00 , B21C37/16 , B21D39/06 , B23P11/02 , B23P19/00 , B23P19/02 , B23P19/04 , F22B37/58 , H01J1/62
CPC分类号： B21C37/16 , B23P11/025 , B23P19/025 , Y10T29/49817 , Y10T29/49821 , Y10T29/49822
摘要： PROBLEM TO BE SOLVED: To provide a method for easily and quickly removing a branch pipe which is inserted into a hole of a pipe supporting plate and is fixed to the pipe supporting plate by enlarging its diameter, the hole having an annular groove on its inside peripheral surface. SOLUTION: When the branch pipe 3 fixed to the pipe supporting plate 1 by enlarging its diameter is removed, first the inserted portion 3a fixed to the hole 2 of the pipe supporting plate 1 is loosened from the hole 2 of the pipe supporting plate by reducing the diameter by heating and then cooling it, next the region 3h facing to the groove 4 formed on the inside peripheral surface of the hole is heated, and then the branch pipe 3 is drawn out from the pipe supporting plate 1 by pulling the branch pipe 3 in the longitudinal direction in order to shrink its diameter and break the red heated region 3h by elongating it. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种方法，用于容易且快速地移除插入到管支撑板的孔中并通过扩大其直径而固定到管支撑板的分支管，该孔具有环形槽在其内周面。解决方案：当通过扩大其直径固定在管支撑板1上的分支管3被去除时，首先将固定在管支承板1的孔2上的插入部分3a从管支撑件的孔2松开通过加热减少直径然后冷却，然后加热面对形成在孔的内周面上的凹槽4的区域3h，然后通过拉动将支管3从管道支撑板1拉出分支管3在纵向方向上以缩小其直径并通过使其红色加热区域3h断裂。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2003262488A DIAMETER CONTRACTION METHOD FOR BRANCH PIPE 审中-公开
公开(公告)号：JP2003262488A
公开(公告)日：2003-09-19
申请号：JP2003064730
申请日：2003-03-11
申请人： DAI ICHI HIGH FREQUENCY CO LTD
发明人： MAENOZONO TSUKASA , YOSHIDA HIROTAKA , KUROKAWA YUJI , KUMAKAWA MAKOTO , TERASAKI MASANORI
IPC分类号： H05B6/10 , F28F9/16
摘要： PROBLEM TO BE SOLVED: To facilitate pullout of a branch pipe 3 by efficiently contracting the diameter of an enlargement work part 3b of the branch pipe 3 fixed to a hole 2 of a pipe support plate 1. SOLUTION: A narrow-width section 3g in one end of the pipe enlargement work part 3b enlarged and fixed to the hole 2 of the pipe support plate 1 is annually heated from the inside of the branch pipe into a red-hot state, the red-hot narrow width section is pulled and made to yield by applying a tensile force to the pipe end so as to be contracted. The same operation is performed on an adjoining narrow width section 3h and the same operation is repeatedly performed by moving the position of the red-hot narrow width section in order after that. The approximately whole area of the pipe enlargement work part 3b tensely attached to the pipe support plate can be thus contracted to facilitate the pullout. COPYRIGHT: (C)2003,JPO

6. 发明专利

JPH11156443A METHOD FOR BENDING METAL BAR 失效
公开(公告)号：JPH11156443A
公开(公告)日：1999-06-15
申请号：JP33789597
申请日：1997-11-21
申请人： DAI ICHI HIGH FREQUENCY CO LTD
发明人： HANAMOTO YUKIMITSU , KISHIHARA SHIGEKI , KUROKAWA YUJI
IPC分类号： H05B6/10 , B21D7/00
摘要： PROBLEM TO BE SOLVED: To provide the method for bending a metal bar such as wide flange shape having a flange/web into a desired curvature while suppressing inclination or camber of the flange. SOLUTION: A part 11 to be bent occupying a part of region in a longitudinal direction of the metal bar 1 is heated into a red heated state, under a state that a projecting face die 25 and a recessed face die 26 are abutted on inner faces of flanges 2, 3 of the part 11 to apply a press force to the recessed face die 26, a turning clamp 15A holding the metal bar 1 is turned, the part 11 is bent while regulating displacement/deformation of the flanges 2, 3 with the projecting face die 25 and the recessed face die 26. By this method, the part 11 is stably bent into a prescribed curvature and inclination/camber of the flange are prevented.

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