EP0737114B1 - Procede de retreint - Google Patents

Procede de retreint Download PDF

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Publication number
EP0737114B1
EP0737114B1 EP95939312A EP95939312A EP0737114B1 EP 0737114 B1 EP0737114 B1 EP 0737114B1 EP 95939312 A EP95939312 A EP 95939312A EP 95939312 A EP95939312 A EP 95939312A EP 0737114 B1 EP0737114 B1 EP 0737114B1
Authority
EP
European Patent Office
Prior art keywords
ring
cavity
diameter
hose
free end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95939312A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0737114A1 (fr
Inventor
Richard Chene
Pascal Detable
Michel Andre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caillau SAS
Original Assignee
Etablissements Caillau SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Etablissements Caillau SAS filed Critical Etablissements Caillau SAS
Publication of EP0737114A1 publication Critical patent/EP0737114A1/fr
Application granted granted Critical
Publication of EP0737114B1 publication Critical patent/EP0737114B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/046—Connecting tubes to tube-like fittings

Definitions

  • the present invention relates generally to a method to shrink a ring fitted on the free end of a flexible pipe fitted onto a rigid tubular element, said ring having at minus a portion called "to shrink” whose diameter is greater than that of the pipe.
  • the method uses a shrinking matrix provided with a cavity axial comprising a flared section widening between a first and second end, the cavity having a wide end open at which the diameter of said cavity is substantially equal to the diameter of said flared section at the second end of the latter.
  • Axial necking is commonly used for custom work rigid tubes.
  • the shrinkage matrix is first of all arranged around the pipe and is then moved, on the ring, to the free end of the pipe.
  • the smallest diameter of the axial cavity is at least equal to the diameter outside of the pipe.
  • the ring itself being arranged around the pipe its internal diameter is also at least equal to the external diameter of the pipe. Therefore, effective reduction of diameter during shrinking is at most more equal to the thickness of the ring.
  • the decrease in diameter may not be sufficient to ensure the reliability of the holding of the hose, ring assembly, tubular element.
  • the invention aims to remedy these drawbacks.
  • the necking is not limited to the thickness of the Ring.
  • the fact of moving backwards allows significantly improve the mechanical strength of the pipe, ring assembly, tubular element due to the behavior of the material of the pipe, which generally includes rubber, during the shrinking operation.
  • the thickness of a flexible pipe varies relatively significantly depending on the manufacturing parameters, the tolerance interval may even be the order of a millimeter. Due to local variations in thickness, the volume excess material, i.e. the volume of the material that the creep tends to locally to repel, is also very variable. Therefore, the pressure of the material constituting the pipe inside the ring undergoes very large local variations. In order for the ring to be able to withstand these variations without deformation and so that the tensile strength the connection between the pipe, the ring and the tubular element is ensured, the thickness of the ring must be relatively large.
  • the necking is therefore carried out in a manner which is both homogeneous and progressive, so that the assembly of the ring and the pipe is solid and reliable, the latter having no bead or accumulation of material at its end clamped between the ring and the rigid tubular element and no area of weakness especially in the region of the tip of the ring away from the free end of the pipe.
  • the connection is ensured by reliably even with relatively thick rings low.
  • the relative axial movement of the ring is stopped and the shrinking die before the first end of the flared section reaches the end of the portion to be shrunk furthest from the end free from the hose.
  • the rear portion of the ring can be slightly flared and does not risk of injury to the hose.
  • connection devices they are subjected to endurance tests of more and more severe.
  • One of these tests consists in oscillating the pipe by compared to the ring.
  • the fact that the rear portion of the ring is flared prevents the hose from being damaged or even cut occasionally of such a test.
  • end 10a is the front end of the flexible hose 10.
  • the figures being truncated, its other end, located at the rear, is not shown.
  • FIG. 1 the ring 14 is shown before it is shrunk, and its diameter D is greater than that of pipe 10.
  • a shrinking die 16 provided an axial cavity 18.
  • This cavity comprises a flared section 18a which goes widening between a first end 19a of diameter d 'and a second end 19b of diameter d.
  • the diameter d is greater than diameter D, itself greater than the diameter of.
  • the cavity On the side of the first end 19a of the flared section, the cavity has a cylindrical section 18b in diameter which leads to a narrow open end 17.
  • the cavity has a wide open end which, in the example shown, coincides with the second end 19b of the section flared, which is tapered.
  • Figure 1 shows these various elements just before the start of the shrinking process, in a position in which the axis of the cavity is aligned with the longitudinal axis A of the flexible hose and the wide open end 20 is directed towards the rear.
  • a tool 22 for axially holding the ring 14, with which the rear end 14b of this ring cooperates by stop is only shown schematically in Figure 1. It can include two jaws which are placed around the pipe so as to cooperate with the rear end 14b of the ring 14 to maintain this last when shrinking.
  • the matrix of constricted so that at least the wide end 20 of the cavity is around the ring to be shrunk, while the first end 19a is located forward, past the front end of the pipe.
  • the actual narrowing begins when the wall of the cavity begins to cooperate with the outer periphery of the ring.
  • the tubular element 12 has, in the vicinity of its rear end, a radial bulge 13.
  • the shrinking is stopped without completely shrinking the ring on the bulge. This ensures a reliable connection between the elements of the device connection, while avoiding local crushing of the pipe on the bulge, which could affect its mechanical properties.
  • the ring 114 has a first portion 115a which must not be necking. This portion 115a which, in the example shown, extends towards the front beyond the front end 110a of the flexible pipe 110, can serve as housing to an annular seal 117 or be provided with a attachment to a rigid tubular end to which you wish to connect the hose 110.
  • the portion 115a constitutes an axial obstacle which makes impossible to use, under the conditions previously mentioned in relation to FIGS. 1 to 3, of the shrinking die 16 in one piece.
  • a shrinking matrix 116 comprising two shells 116a and 116b.
  • a cavity 118 of the matrix is defined, having a flared section 118a and a section cylindrical small diameter 118b.
  • the small end 121 of the cavity located opposite the end wide 120 of the latter, is open. This allows, as seen on the FIG. 5, placing the matrix 116 around the portion 115b to be constricted, while allowing the first portion 115a of the ring 114 to protrude towards the front beyond the matrix.
  • the shrinking of the portion 115b is carried out by moving the matrix 116 in the direction of the arrow F, i.e. by moving it from its position of beginning of the constriction, shown in broken dashed lines, at its position end of the constriction, shown in solid lines.
  • the ring is held axially using a tool shrinking 122.
  • the tool 122 includes jaws which cooperate with the front part of the ring 114. More precisely, the jaws of the tool 122 are placed around the ring, immediately behind the first portion 115a thereof, and cooperate in abutment with a shoulder 114 'to hold the ring and prevent it from moving backwards during the shrinking.
  • the region 115c in which the preliminary step of radial constriction is carried out the front beyond the front end 110a of the flexible hose, so that the any drawbacks associated with this radial necking operation are not not affect the pipe.
  • the diameter of the portion intermediate 115c is immediately less than or equal to the necking diameter, in which case no preliminary radial necking step is necessary.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Forging (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Medicinal Preparation (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Pipe Accessories (AREA)
EP95939312A 1994-11-02 1995-11-02 Procede de retreint Expired - Lifetime EP0737114B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9413063A FR2726208B1 (fr) 1994-11-02 1994-11-02 Procede de retreint
FR9413063 1994-11-02
PCT/FR1995/001438 WO1996014177A1 (fr) 1994-11-02 1995-11-02 Procede de retreint

Publications (2)

Publication Number Publication Date
EP0737114A1 EP0737114A1 (fr) 1996-10-16
EP0737114B1 true EP0737114B1 (fr) 2002-03-27

Family

ID=9468416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95939312A Expired - Lifetime EP0737114B1 (fr) 1994-11-02 1995-11-02 Procede de retreint

Country Status (17)

Country Link
EP (1) EP0737114B1 (hu)
JP (1) JP3179499B2 (hu)
KR (1) KR100264241B1 (hu)
CN (1) CN1067303C (hu)
AT (1) ATE214983T1 (hu)
BR (1) BR9506434A (hu)
CA (1) CA2178740C (hu)
CZ (1) CZ292243B6 (hu)
DE (1) DE69526065T2 (hu)
ES (1) ES2173984T3 (hu)
FR (1) FR2726208B1 (hu)
HU (1) HU214856B (hu)
MX (1) MX9602541A (hu)
PL (1) PL178959B1 (hu)
RU (1) RU2113929C1 (hu)
TW (1) TW305783B (hu)
WO (1) WO1996014177A1 (hu)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4554896B2 (ja) * 2003-06-16 2010-09-29 カヤバ工業株式会社 ピストンロッドの製造方法
FR2868713B1 (fr) * 2004-04-09 2006-07-21 Faurecia Sys Echappement Machine de retreint d'un volume d'echappement
US9857008B2 (en) 2008-11-20 2018-01-02 Gates Corporation Crimpable or swageable fluid power ferrules, couplings, systems and methods employing torque communication
CA2751147C (en) * 2009-02-03 2017-01-17 Leslie Donald Dunn Stub shaft and bearing assembly and conveyor idler roller incorporating same
FR2950403B1 (fr) 2009-09-24 2011-10-21 Caillau Ets Collier de serrage et son procede de fabrication.
CN101856695B (zh) * 2010-05-21 2012-01-04 柳州市金元机械制造有限公司 一种推拉式软轴外管扣铆方法及其设备
CN103143661B (zh) * 2013-03-21 2015-08-26 陕西飞机工业（集团）有限公司 一种模锻件公差优化方法
CN104139145A (zh) * 2014-08-11 2014-11-12 贵州航天新力铸锻有限责任公司 核电堆内构件用导向喇叭口锻件的锻制方法
CN105537488A (zh) * 2016-02-04 2016-05-04 柳州龙润汽车零部件制造有限公司 单工序空调管螺栓镦接成型模具
US11105437B2 (en) 2017-07-03 2021-08-31 Continental Automotive Systems, Inc. Combined inlet and outlet check valve seat
US10820130B2 (en) * 2017-09-18 2020-10-27 Bose Corporation Method of forming a speaker housing
CN109590714B (zh) * 2018-12-13 2022-07-08 重庆金山医疗技术研究院有限公司 金属筒的压装机构

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2314002A (en) * 1941-12-03 1943-03-16 Scoville Mfg Company Method for manufacturing and assembling high pressure couplings
US3726122A (en) * 1971-03-10 1973-04-10 Mc Donnell Douglas Corp Swaging tool
US5031301A (en) * 1990-01-30 1991-07-16 Hans Oetiker Method for connecting a reinforced hose with a coupling

Also Published As

Publication number Publication date
KR100264241B1 (ko) 2000-08-16
CZ189196A3 (en) 1996-09-11
HUT75563A (en) 1997-05-28
FR2726208A1 (fr) 1996-05-03
PL178959B1 (pl) 2000-07-31
MX9602541A (es) 1997-05-31
BR9506434A (pt) 1997-09-02
DE69526065T2 (de) 2002-11-07
TW305783B (hu) 1997-05-21
CN1138302A (zh) 1996-12-18
HU9601811D0 (en) 1996-09-30
DE69526065D1 (de) 2002-05-02
KR960706379A (ko) 1996-12-09
RU2113929C1 (ru) 1998-06-27
ES2173984T3 (es) 2002-11-01
HU214856B (hu) 1998-06-29
WO1996014177A1 (fr) 1996-05-17
CN1067303C (zh) 2001-06-20
JP3179499B2 (ja) 2001-06-25
FR2726208B1 (fr) 1997-01-17
CA2178740C (en) 2005-09-13
CA2178740A1 (en) 1996-05-17
CZ292243B6 (cs) 2003-08-13
ATE214983T1 (de) 2002-04-15
EP0737114A1 (fr) 1996-10-16
JPH09507795A (ja) 1997-08-12

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