EP0375772B1 - Appareil de sertissage de tubes - Google Patents

Appareil de sertissage de tubes Download PDF

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Publication number
EP0375772B1
EP0375772B1 EP19890908451 EP89908451A EP0375772B1 EP 0375772 B1 EP0375772 B1 EP 0375772B1 EP 19890908451 EP19890908451 EP 19890908451 EP 89908451 A EP89908451 A EP 89908451A EP 0375772 B1 EP0375772 B1 EP 0375772B1
Authority
EP
European Patent Office
Prior art keywords
pipe
holding means
lever
movement
jaw members
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
EP19890908451
Other languages
German (de)
English (en)
Other versions
EP0375772A1 (fr
Inventor
William James Irwin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT89908451T priority Critical patent/ATE95450T1/de
Publication of EP0375772A1 publication Critical patent/EP0375772A1/fr
Application granted granted Critical
Publication of EP0375772B1 publication Critical patent/EP0375772B1/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

Definitions

  • This invention relates to pipe crimping apparatus for crimping the joints of pipe connections of the type having non-flux, non-solder joints such as those described in my WO-A-89/03494, published 20/4/89 in which pipe ends are provided adjacent to their ends with a collar of increased diameter over which an end of a pipe connector is fitted, said pipe connector end having been swaged to a complimentarily dimensioned diameter to fit over the pipe end, the outer end of said swaged end then being crimped over the side of the collar remote from the end of the pipe.
  • the pipe ends are straight, and pipe connectors are provided in which a collar is pre-fitted into the or each swaged end of each pipe connector, and the swayed end partially crimped around said collar to retain it in position, the swaged end being fully crimped after the swayed end is fitted over one end of a pipe.
  • 'swaged' is used herein to include the increasing in diameter at or adjacent to one or each end of a pipe or pipe connector by mechanical means or by the increase in diameter being formed as part of a casting of the or each end of a pipe or pipe connector.
  • US-A-3 726 122 discloses a pipe crimping apparatus according to the pre-characterising part of claim 1 comprising holding means formed of two separate jaw members fitted together into a fixed stationary holder.
  • the holding means externally engages and holds a joint formed by locating one end of a pipe connector onto a pipe end, the holding means having a crimping tool formed by two aligned plates movable relative to the swayed end to cause the swaged end to be deformed and crimped onto the pipe end and means to move the tool towards the holding means to engage against the connector externally of the holding means.
  • a pipe crimping apparatus comprises holding means to externally engage and hold a joint to be formed by swaging one end of a pipe connector onto a pipe end, the holding means being elongate and formed by two jaw members, each having an inner concavity together defining a substantially cylindrical clamping zone, a crimping tool movable relative to the clamping zone and means to cause movement of the tool relative to the clamping zone wherein
  • the projecting end of the walls are each provided with an outward flange to overlie their respective jaw members, the distance of the flanges from their respective jaw members determining the extent of lengthwise movement.
  • the means to move the lever is desirably a ram and piston arrangement operated hydraulically, pneumatically or hydro-pneumatically.
  • the apparatus is a hand held implement having an elongate handle at one end of which the holding means are provided.
  • One jaw member is preferably stationary with the handle and the other member is hinged thereto.
  • a bolt arrangement is desirably provided to urge the hinged member into a closed position with the other member against the biasing. The bolt is preferably securable in said urged position.
  • a pipe crimping apparatus generally comprises a hand held implement having an elongate handle 10, at one end of which elongate holding means, in the form of a pair of jaw members 12, 14 are provided with its axis at right angles to the axis of the handle 10.
  • the jaws of both members 12, 14 are similar and concave, and together the concavities of the members form a cylindrical clamping zone with a gripping zone formed by an internal peripheral element 16 at one end thereof.
  • Jaw member 14 is stationary with the handle 10 and jaw member 12 is hinged thereto to allow the jaw members 12, 14 of the implement to be opened and located around a pipe connection (not shown) and then closed to hold same.
  • the jaw members 12, 14 are spring biased apart to the open position.
  • a crimping tool is provided at the other end of the jaw members 12, 14 and comprises an inner arcuate wall 18 for each jaw member.
  • the walls 18 extend beyond the end remote from the elements 16 and are movable relative to its member 12, 14 in a direction longitudinal of the clamping zone and adapted for movement towards or away from the gripping elements 16.
  • the walls 18 are each provided with a slot 24 and are mounted onto their respective members 12, 14 by a fastener 22 whose head marginally overlaps the sides of the respective slot 24 to allow for their restricted lengthwise movement.
  • the marginal sides of the respective slot 24 are recessed so that the head of tie fastener 22 does not project out beyond the wall's inner face.
  • the projecting end of the walls 18 are each provided with an outward flange 26 to overlie their respective member.
  • Spring biasing such as in the form of helical springs 25, is provided between the top of tie members 12, 14 and their respective flanges 26 and is provided to bias the walls 18 to their outer extent of movement.
  • the gripping elements 16 are contoured to complement the curved shape of the inner side of a swayed end of a pipe connector, and the inner ends of walls 18 are cut away from the inside to outside wall to a thickness the same as, or approximately the same as, the thickness of the swayed end of the pipe connector.
  • the inner walls may be recessed over most of their length to allow the crimping tool to be used with closely adjacent swayed ends, the recessing of the walls allowing a second swayed end to be positioned within the tool but not being acted on by the tool.
  • Means to cause axial movement of the tool is a lever 20 mounted, to act as a simple lever about fulcrum pivot pin 28, at the end of the jaw members 12, 14 remote from the gripping elements 16 with one end adapted to engage the flanges 26 of the projecting ends of the walls 18.
  • the pin 28 is provided between two opposed cheeks 27 provided upstanding on a mounting 29 pivotally connected to the handle 10.
  • the said one end of the lever 20 is bifurcated as shown with both arms overhanging said flanges 26.
  • the lever 20 is pivotal to allow it to swivel to fit around a pipe located projecting from the clamping zone.
  • a bolt arrangement comprising a bolt 30 movable in a bore 34 as shown.
  • the movement of the bolt 30 is controlled by a knob 32 slidable along a slot 36 to urge the bolt 30 against the hinged member into a closed position with the other member.
  • the axes of the slot 36 and bore 34 are parallel to the longitudinal axis of the handle 10.
  • the longitudinal movement of the bolt 30 towards the members 12, 14 causes the outer end of the bolt 30 to abut a cheek 38 on the hinged member 12.
  • the slot 36 has a right-angled extension 40, and the bolt 30 is securable against major axial movement in the handle 10 in said urged position by the knob 32 being moved along said extension 40.
  • Movement means is provided to cause the lever 20 to urge the walls 18 towards the elements 16 so to crimp an inner side, or an outer side, or both inner and outer sides of a swaged end of a pipe connector to a pipe end when such is located therein.
  • the movement means to move the lever 20 is a first piston and cylinder arrangement 42 operated hydraulically, pneumatically or hydro-pneumatically.
  • the cylinder is a bore provided in the handle 10 adjacent to the members 12, 14 and having an axis at right angles to the handle 10.
  • the piston floats ill the cylinder and is movable in response to fluid being fed thereinto through a narrow bore 44 from a supply of fluid fed to the end of the handle 10 remote from the jaw members 12, 14.
  • a second piston and cylinder arrangement 46 is provided as shown and serves, when extended, to urge the bolt 30 into tight abutment with the cheek 38 of member 12 so to retain it in tight abutment with member 12.
  • the cylinder of the arrangement 46 is a bore 56 lengthwise of the handle 10 and the piston of the arrangement 46 is formed in two parts, a first part 48 adjacent to the supply end of the fluid and a second part 50 to which the knob 32 is secured as shown.
  • the first part 48 is secured against rotational movement by a slot 58 being provided in the wall of the bore 56 arid a grub screw 60, whose outer end slides in the slot 58, is secured into a tapped bore in part 48.
  • the knob 32 prevents rotational movement of part 50.
  • the two parts are closable together when the knob 32 is in the slot 36.
  • a spindle 52 projecting towards the first part 48 and provided on an inside face of the second part 50 is in registry with a complementary bore 54 in the first part 48.
  • the spindle 52 By moving the knob 32 into the extension 40, the spindle 52, which will have fully emerged from the bore 54, will be out of registry and in front of the inside face of the first part 48. Entry of fluid from the supply, will cause the first part 48 to abut the spindle 52 to cause the second part 50 to urge the bolt 30 tightly against the cheek 38. After the fluid so acts it then flows through bore 44 to the first piston and cylinder arrangement 42.
  • Both pistons of arrangements 42, 46 are spring biased to retracted position by helical spring (not shown) being provided between the end of each cylinder and the leading face of its respective piston.
  • the implement In use, the implement is hand held and after a pipe connector is located on a pipe end, is used to crimp it, by axial compression against its outer end and behind the inner side of the swaged end, in position in the manner hereinbefore described.
  • the bolt arrangement may be mechanically operated without assistance from the lever movement means.
  • the lever 20 may be operated by a Bowden cable 62, the other end of which is connected to a cable operating device as shown in Fig. 3.
  • a Bowden cable 62 the other end of which is connected to a cable operating device as shown in Fig. 3.
  • like parts are denoted by like numerals.
  • the slot 36 does not have an extension 40.
  • the handle 10 is of a different construction and appearance.
  • the bolt 30 has a corresponding shaped bar 64 spaced therefrom and parallel thereto as shown and between which at the member remote end, has a transom 66 to which the cable 62 is secured, the core cable 68 passing through a bore in the transom to be secured to a wedge 70 movable along a surface 72, provided in a housing 76, to engage under the end of lever 20 to pivot it about pin 28 to abut the bifurcated end against the flanges 26.
  • the bolt 30 is secured by knob 32 being in the form of a clamping nut in screw threaded engagement with a screw-threaded element secured to bolt 30, the clamping nut being clamped against bolt housing 74.
  • the housing 76 provides spring-biasing to return the lever 20 to its original position and also wedge 70 when the cable 68 is released.
  • the cable operating device (Fig. 3) is a stand 80 having a rod 82 along which a key 84 is provided.
  • a cylinder 86 is low-friction movable lengthwise along said rod 82, the cylinder 86 having a groove 88 to engage said key 84 whereby to prevent the cylinder 86 from rotational movement.
  • the cylinder 86 on its outside surface as shown mounts a plate 90 to which the cable 56 is secured with core cable 68 passing through a hole 92.
  • the core cable 68 is secured to cranked handle 94 Pivotally mounted to anchorage 96 secured to cylinder 86 as shown. With the handle 94 in an upward position the wedge 70 is in the position as shown in Fig. 2 and with the handle 94 in the position as shown in Fig. 3 the wedge 70 is pulled to move the lever 20.
  • the crimping to the swaged end may alternatively be by spot or dot crimping rather than as above described with the full annular inner, outer or both inner and outer sides of the swaged end being crimped,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Clamps And Clips (AREA)
  • Automatic Assembly (AREA)

Abstract

Un appareil de sertissage de tubes comprend un moyen de préhension destiné à engager par l'extérieur et à maintenir un assemblage formé en plaçant une extrémité d'un raccord de tubes sur une extrémité de tube, ledit moyen de préhension comportant un outil de sertissage (18, 106, 124) mobile par rapport à l'extrémité rétreinte à déformer et à sertir sur l'extrémité du tube. Dans un mode de réalisation préféré, le moyen de préhension (12, 14) est allongé et comporte en une de ses extrémité une zone de serrage (16) à engager dernière le côté intérieur de l'extrémité rétreinte du raccord de tube, et en son autre extrémité l'outil de serrage (18) est mobile longitudinalement et à l'intérieur du moyen de préhension. On a prévu des moyens (20) pour provoquer le mouvement axial de l'outil (18) vers la zone de serrage (16) de manière à engager le côté extérieur de l'extrémité rétreinte et à le sertir sur l'extrémité du tube.

Claims (10)

  1. Dispositif de sertissage d'un tube, comprenant des moyens de maintien, pour entrer en prise de façon externe et pour tenir un joint à former par façonnage d'une extrémité d'un connecteur de tube sur une extrémité de tube, les moyens de maintien étant allongés et formés par deux organes de mâchoire (12, 14), chacun ayant une concavité interne déterminant ensemble une zone de blocage sensiblement cylindrique, un outil de sertissage (18) mobile par rapport à la zone de blocage et des moyens pour provoquer un déplacement de l'outil par rapport à la zone de blocage, caractérisé en ce que :
    (a) les organes de mâchoire (12, 14) sont dans un rapport de pivotement avec une zone de serrage (16) prévue à une extrémité des moyens de maintien et sont formés par un élément périphérique interne (16),
    (b) l'outil (18) est sensiblement cylindrique, s'étend axialement dans la zone de blocage pour être poussé en direction de la zone de serrage (16) lors d'un actionnement axial des moyens de déplacement, et est formé en deux parties qui correspondent aux organes de mâchoire (12, 14), chaque partie étant fixée à son organe de mâchoire respectif (12, 14) pour un déplacement longitudinal par rapport à ce dernier et limité, chaque partie de l'outil étant une paroi arquée (18) qui fait saillie au-delà de l'autre extrémité des moyens de maintien et qui est rappelée par ressort vers une position externe, et
    (c) les moyens de déplacement comportent un levier (20) monté à l'extrémité externe des parois (18), une extrémité du levier (20) étant en forme de fourche et agencée pour entrer en prise avec les extrémités en saillie des parois (18) afin de provoquer un déplacement des parois (18) vers l'élément (16).
  2. Dispositif suivant la revendication 1, caractérisé en ce que les extrémités en saillie des parois (18) sont munies chacune d'un collet externe (26) pour recouvrir leurs organes de mâchoire (12, 14) respectifs, la distance entre les collets (26) et leurs organes de mâchoire (12, 14) respectifs déterminant l'importance du déplacement longitudinal.
  3. Dispositif suivant l'une ou l'autre des revendications 1 et 2, caractérisé en ce que le levier (20) peut pivoter en vue d'un mouvement de rotule.
  4. Dispositif suivant l'une quelconque des revendications 1, 2 et 3, caractérisé en ce que les moyens pour déplacer le levier (20) sont un agencement de cylindre et de piston (42) actionné hydrauliquement, pneumatiquement ou hydropneumatiquement.
  5. Dispositif suivant l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il est un instrument tenu à la main et ayant une poignée allongée (10) dont une extrémité est munie des moyens de maintien.
  6. Dispositif suivant la revendication 5, caractérisé en ce qu'un organe de mâchoire (14) est fixe par rapport à la poignée (10) et en ce que l'autre organe (12) y est articulé.
  7. Dispositif suivant la revendication 6, caractérisé en ce que les organes de mâchoire (12, 14) sont rappelés à l'écart par ressort.
  8. Dispositif suivant la revendication 7, caractérisé en ce qu'un agencement de cheville (30) est prévu pour pousser l'organe articulé (12) dans une position fermée avec l'autre organe (14), à 1'encontre du rappel.
  9. Dispositif suivant la revendication 8, caractérisé en ce que la cheville (30) peut être fixée dans ladite position poussée.
  10. Dispositif suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que les moyens pour déplacer le levier sont constitués par un câble Bowden (62).
EP19890908451 1988-07-01 1989-07-03 Appareil de sertissage de tubes Expired - Lifetime EP0375772B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89908451T ATE95450T1 (de) 1988-07-01 1989-07-03 Pressvorrichtung zur herstellung der verbindung von rohren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888815643A GB8815643D0 (en) 1988-07-01 1988-07-01 Pipe crimping apparatus
GB8815643 1988-07-01

Publications (2)

Publication Number Publication Date
EP0375772A1 EP0375772A1 (fr) 1990-07-04
EP0375772B1 true EP0375772B1 (fr) 1993-10-06

Family

ID=10639684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890908451 Expired - Lifetime EP0375772B1 (fr) 1988-07-01 1989-07-03 Appareil de sertissage de tubes

Country Status (5)

Country Link
EP (1) EP0375772B1 (fr)
AU (1) AU628367B2 (fr)
DE (1) DE68909764T2 (fr)
GB (2) GB8815643D0 (fr)
WO (1) WO1990000097A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902940A1 (de) * 1989-02-01 1990-08-02 Parabeam Bv Doppelplueschgewebe
US5044190A (en) * 1990-09-04 1991-09-03 Dana Corporation Base for rotatably supporting a collet crimping machine
GB9812086D0 (en) * 1998-06-05 1998-08-05 Irwin William J Pipe crimping apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1782219A (en) * 1928-11-24 1930-11-18 Metal Hose & Tubing Co Inc Machine for use in assembling hose-coupling parts and the like
US3626450A (en) * 1969-08-12 1971-12-07 Weatherhead Co Portable swaging tool
US3726122A (en) * 1971-03-10 1973-04-10 Mc Donnell Douglas Corp Swaging tool
US3691604A (en) * 1971-04-15 1972-09-19 Crawford Fitting Co Ferrule setting apparatus
US3771343A (en) * 1972-03-24 1973-11-13 Mc Donnell Douglas Corp Swaging tool
US3848451A (en) * 1972-11-24 1974-11-19 Deutsch Co Metal Components Swaging tool

Also Published As

Publication number Publication date
WO1990000097A1 (fr) 1990-01-11
DE68909764D1 (de) 1993-11-11
GB2230989B (en) 1992-08-12
EP0375772A1 (fr) 1990-07-04
AU628367B2 (en) 1992-09-17
DE68909764T2 (de) 1994-01-27
GB9003935D0 (en) 1990-08-01
GB8815643D0 (en) 1988-08-10
AU3980389A (en) 1990-01-23
GB2230989A (en) 1990-11-07

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