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41. 发明专利

JPS5890322A MANUFACTURE OF CORRUGATED PIPE 失效
公开(公告)号：JPS5890322A
公开(公告)日：1983-05-30
申请号：JP17259881
申请日：1981-10-28
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SUZUKI MITSUNORI , MIYAZAKI HIROMU
IPC分类号： B21C37/15 , B21D15/04 , B21D15/06
摘要： PURPOSE:To enable manufacture of a corrugated pipe such as a rectangular waveguide etc. relatively simply by introducing a pipe material into a space formed by two pairs of gears arranged at specified positions and retating the gears simultaneously. CONSTITUTION:Two pairs of gears 1a, 1b and 2a, 2b of the same module are disposed as opposing to each other to form a gear space S. In the part A of minimum area of the gear space S, that is, the part in which gears come closets to each other, the gears are so arranged that crests of adjoining gears, 1a and 2 etc. do not meet at the same time, but crests and troughs meet at the same time. A rectangular pipe made by deforming previously a cylindrical pipe to rectangular shape that has the same number of angles as the gears is introduced into the gear space S, and a handle 3 is rotated. Four gears 1a, 1b, 2a, 2b rotate simultaneously, and a rectangular corrugated pipe 19 is manufactured easily.

42. 发明专利

JPS5711732A KNOTTING MACHINE FOR WIRE 失效
公开(公告)号：JPS5711732A
公开(公告)日：1982-01-21
申请号：JP7758880
申请日：1980-06-09
申请人： FURETSUKUSU O REITAASU INC
发明人： JIYOOJI II BERU , JIYON PII GOOINGU
IPC分类号： B21D11/12 , B21D15/04 , B21F15/04

43. 发明专利

JPS56163033A PRODUCING DEVICE FOR CORRUGATED PIPE 失效
公开(公告)号：JPS56163033A
公开(公告)日：1981-12-15
申请号：JP6832680
申请日：1980-05-21
申请人： NISHODO KUCHOKI KK
发明人： OGATA MASAMI , YOSHIHARA MOTOJI , TADA SHIYOUHEI
IPC分类号： B21D15/04
摘要： PURPOSE:To perform corrugating and stopping automatically and rationalize the work by utilizing the centrifugal forces of a rotary disc and increasing said forces by means of cams thereby performing corrugating. CONSTITUTION:In the case of corrugating a pipe P while moving the same through an insertion hole 2, the positions of stoppers 8 are determined by adjusting bolts 8b, and the cams 5 suited for the amplification multiple by prescribed centrifugal forces are selected by operating fixing bolts. At the same time, weights 7 are determined by calculation, and the angles of corrugating rollers R are adjusted in compliance with the pitch of waveform grooves and this completes the preparation for corrugating. When a rotary disc 1 rotates, the weights 7 are turned by the rotating centrifugal forces thereof, and abut on the stoppers 8, thereby stably making the depth of the grooves constant. Push holders 3 are shifted to the central direction by the position fluctuations of the turned cams 5 to allow the corrugating rollers R held to forks 4 to contact the circumferential surface of the pipe P to be treated under pressure, thereby forming waveform grooves on the circumferential surface of the pipe P along with the rotation of the rotary disc.

44. 发明专利

JPS5646454B2 失效
公开(公告)号：JPS5646454B2
公开(公告)日：1981-11-04
申请号：JP9619078
申请日：1978-08-09
IPC分类号： B21D39/20 , B21D15/04

45. 发明专利

JPS5653825A FLEXIBLE TUBE AND ITS PRODUCTION 失效
公开(公告)号：JPS5653825A
公开(公告)日：1981-05-13
申请号：JP13059679
申请日：1979-10-09
申请人： SANSHIN KOGYO KK
发明人： ISHIMOTO TADANOBU
IPC分类号： B21C37/12 , B21C37/15 , B21D15/04 , B21D15/06
摘要： PURPOSE:To easily obtain a flexible tube of superior corrosion resistance by forming a bellows having an extension part at the end into one piece with a ringlike member and a blade, then folding back the extension part of said bellows and externally covering the weld zone. CONSTITUTION:With the end part of a bellows 55 left as an extension part 59, the top part 57 of the bellows 55 is aligned with the end 52 of a blade 51 and the inside circumferential edge 54 of a ring member 53 and these are made into one piece by welding the contact point 58. Thence, an axial pressure is applied to the extension part 59 of the bellows 55 from the right side to bend the extention part 59 until both parts contact closely with each other. As a result, the extention part 59 is folded back with the peak of the trough parts as its first fold back point 62 and the peak 70 of the crest part as the 2nd fold back point 63, thus the fold back part 61 is allowed to closely contact with the weld zone 58 and the outer side face 60 of the ringlike member 53, whereby the weld zone 58 is externally covered.

46. 发明专利

JPS569021A SCREW WORKING METHOD OF THINNWALLED PIPE 失效
公开(公告)号：JPS569021A
公开(公告)日：1981-01-29
申请号：JP8565079
申请日：1979-07-05
申请人： YAMADA MASAO , OSAKA SANGYO KK
发明人： YAMADA MASAO
IPC分类号： B21D15/04
摘要： PURPOSE:To work the screws having sufficient practicable strength on a thin-walled pipe easily and highly accurately by fitting a mandrel die into the thin-walled pipe and revolving these under pressure between plural circular dies. CONSTITUTION:With circular dies 10, 11 and a mandrel die 12 being held spaced, a thin-walled pipe P being the work is fitted onto the die 12. The outside diameter of the die 12 is made approximately the same as the inside diameter of the pipe P. In this state, the dies 11-12 are rotated and the movable die 11 is moved to the die 12 side to push the die 12 and press it to the stationary die 10. As a result, the pipe P revolves in the same direction as that of the die 12 by receiving the rotating force of the die 12 from the inner side and the rotating forces of the dies 10, 11 from the outer side. The peripheral wall portions of the pipe P press-contacted with the dies 10-12 are pressed by the die screw parts 10a, 11a from the outer side and the screw parts 12a being reverse in crest and through from those of said parts from the inner side, thus it plastically deforms along the screw shape, whereby screws S1, S2 are formed on the inside and outside surfaces.

47. 发明专利

JPS566749A THREAD FORMING METHOD 失效
公开(公告)号：JPS566749A
公开(公告)日：1981-01-23
申请号：JP8080179
申请日：1979-06-28
申请人： TEIJIN ENG , INOUE YUATSU KIKAI SEISAKUSHO
发明人： MORIHASHI NORIBUMI , INOUE TAIZOU
IPC分类号： B21D15/04 , B21D22/16 , B21H3/00
摘要： PURPOSE:To form uniform threads on a cylindrical work with a simple device by fitting and fixing the cylindrical work to a die having been inscribed with desired threads, and moving a pressing member while pressing the same to the work thereby transferring the threads of the revolving die to the work. CONSTITUTION:In forming threads to a cylindrical work such as pipe, the cylindrical work 8 is fitted onto a die 5 fixed to the revolving shaft of a gear box 1 and having been inscribed with desired threads and is fixed by means of a bolt 7. A pressing member 6 which is freely rotatively held to the end of a tool rest 3 mounted to a moving table 3a and is pressed in the vertical directions by a cylinder 4 is pressed to the work 8 along said threads and while the die 5 is being rotated, the pressing member 6 is moved by a screw shaft 2, whereby the threads of the die 5 are transferred to the work 8 and the threads are thus formed. This method does not require stringent mechanical accuracy or the like, is suited for the formation of the threads for which the evenness of shapes is required and is able to form threads on the inside surface of a pipe as well.

48. 发明专利

JPS563134B2 失效
公开(公告)号：JPS563134B2
公开(公告)日：1981-01-23
申请号：JP3024074
申请日：1974-03-16
IPC分类号： B21D15/04 , H01B11/18 , H01B11/20 , H01B13/00 , H01B13/016 , H01P3/06

49. 发明专利

JPS5510354A PRODUCTION OF FLEXIBLE CORRUGATED PIPE 失效
公开(公告)号：JPS5510354A
公开(公告)日：1980-01-24
申请号：JP8359878
申请日：1978-07-11
申请人： NIPPON KOKAN KK , TOKYO RASENKAN SEISAKUSHO KK
发明人： TAKEUCHI TATSUAKI , HONMA HIROSHI , FUJIMOTO HIDEO
IPC分类号： B21C37/16 , B21D15/00 , B21D15/04
摘要： PURPOSE:To obtain the corrugated pipe having high flexibility from material of less ductility by heating the material and allow it to cool prior to final working, then forming the material. CONSTITUTION:First, the elongation of a metal material which is relatively difficult to be plastically worked is beforehand measured and the working limit of that metal is estimated. Working is once stopped before the working limit. Next, stress relieve annealing below the stress relieaving temperature, i.e., recrystallization temperature, of the material used is performed to sufficiently relieve stresses. After such heat treatment, the material is held for a specified time to be allowed to cool in air, thence it is formed down to the desired final working amount, whereby the corrugated pipe is produced.

50. 发明专利

JPS5466371A MANUFACTRE OF DEEPLY GROOVED PIPE 失效
公开(公告)号：JPS5466371A
公开(公告)日：1979-05-28
申请号：JP13387077
申请日：1977-11-07
申请人： DAINICHI NIPPON CABLES LTD
发明人： HACHISUGA KOUZOU , KASASHIMA TATSUJI , YOSHIKAWA MAKOTO
IPC分类号： B21D15/04 , B21D15/00
摘要： PURPOSE:To form the deeply grooved corrugation in the pipe at high accuracy, by first forming the rough groove in the blank pipe which is then passed through the rotary screw die provided with the screw thread of small pitch, on purpose to narrow the pitch and deepen the groove. CONSTITUTION:The blank pipe 1 is fed at a constant speed, and two dies 15, 16, are driven at the same speed so as to screw the screw threads 18, 19, in the direction opposite against the advance of the pipe 1; hereby, the rough groove 20 is formed in the pipe 1. Then the pipe 1 is passed through the gap (d), and the deep groove forming die 16, and the rough groove 20 is engaged with the screw thread 19. Hereupon, the pitch of the rough groove 20 is larger than the pitch of the screw thread 19, so that the screw thread on the pipe 1 side is axially compressed by the screw thread 19 on the die 16 side, and the pitch of the screw thread is narrowed. Besides, the ravine of the rough groove 20 is radially compressed inward by the top of the screw thread 19, and the deep groove 21 is formed.

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