EP0671984A1 - Outil de raccordement par pression. - Google Patents

Outil de raccordement par pression.

Info

Publication number
EP0671984A1
EP0671984A1 EP93924087A EP93924087A EP0671984A1 EP 0671984 A1 EP0671984 A1 EP 0671984A1 EP 93924087 A EP93924087 A EP 93924087A EP 93924087 A EP93924087 A EP 93924087A EP 0671984 A1 EP0671984 A1 EP 0671984A1
Authority
EP
European Patent Office
Prior art keywords
press
coupling
tool according
pressing
press tool
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.)
Granted
Application number
EP93924087A
Other languages
German (de)
English (en)
Other versions
EP0671984B1 (fr
Inventor
Heinrich Pfeiffer
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.)
Novopress GmbH Pressen und Presswerkzeuge and Co KG
Original Assignee
Novopress GmbH Pressen und Presswerkzeuge and Co KG
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 Novopress GmbH Pressen und Presswerkzeuge and Co KG filed Critical Novopress GmbH Pressen und Presswerkzeuge and Co KG
Publication of EP0671984A1 publication Critical patent/EP0671984A1/fr
Application granted granted Critical
Publication of EP0671984B1 publication Critical patent/EP0671984B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53909—Means comprising hand manipulatable tool
    • Y10T29/53913—Aligner or center
    • Y10T29/53917—Tube with tube
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53987—Tube, sleeve or ferrule
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53996—Means to assemble or disassemble by deforming

Definitions

  • the invention relates to a pressing tool for connecting, in particular, tubular workpieces, with a pressing ring comprising, in particular, at least three pressing jaw elements connected to one another in an articulated manner, the pressing tool at least one closing point between two
  • Press jaw elements is open and there has points of attack for a locking device with which the press jaw elements can be brought together to form a closed ring.
  • These pressing tools have a pressing ring which is open at a closing point and which is composed of pressing jaw elements which are connected to one another in an articulated manner and which in turn consist of a pressing jaw carrier and pressing jaws which are movably guided in the circumferential direction.
  • a press ring can be placed around the point to be pressed in a cuff-like manner and then pulled together with the aid of a closing device.
  • the locking device can be permanently connected to the press ring.
  • the compression ring is intended and dimensioned for the compression of larger pipe diameters, it is more advantageous for weight and handling reasons to design the locking device as a separate unit from the compression ring, which can be attached to the compression ring placed over the compression fitting in the area of the locking point, and in fact at points of attack provided for this purpose and adapted to the locking device on both pressing jaw elements adjacent to the locking point.
  • the area of application of such pressing tools is to be expanded to even larger pipe diameters.
  • the press ring then becomes so heavy that handling and safety problems arise when it is folded around the pipe end or around the press fitting.
  • the invention is therefore based on the object of designing a press tool of the type mentioned in such a way that the handling of the press tool is facilitated in particular when it is dimensioned for larger pipe diameters.
  • This object is achieved according to the invention in that at least one coupling member is provided, with which the pressing jaw elements adjacent to the closing point can be connected, the coupling member being designed to be flexible in the closing direction in the coupled state.
  • the press ring after it has been placed around the pipe end or the press fitting, can be provisionally secured by bridging the open closing point with the aid of a coupling member and thus closing the press ring.
  • the press ring can then no longer slip, and it is no longer necessary to hold the press ring in place for the closing device to be attached.
  • the coupling member is designed to be flexible in the closing direction according to the invention, while it limits the mobility of the pressing jaw elements in the opening direction.
  • the coupling member can be dimensioned such that the press ring can still be rotated around the workpiece.
  • the coupling member is dimensioned such that a circumferential force is applied to the pressing ring when it is placed around the workpiece and when the coupling member is closed, so that the pressing ring is pretensioned on the workpiece to be pressed , in particular the press fitting, is present, so that the press ring can at least no longer rotate automatically.
  • the coupling member can have a first coupling lug articulated to the one pressing jaw element and a second one to the other Compression jaw element have connected coupling tab, wherein both coupling tabs can be connected to one another in an articulated manner, for example by means of a coupling bolt which surrounds both coupling tabs.
  • a coupling member limits the mobility of the pressing jaw elements in the opening direction, but can articulate outwards during the pressing process with the aid of the closing device, without opposing the closing device in this case with any significant resistance.
  • the coupling bolt has a first bolt section which surrounds the first coupling plate and a second, in the second coupling tab has a graspable bolt section, the axes of the bolt sections being offset from one another.
  • the second bolt section thus forms an eccentric.
  • the length of the coupling tabs and the size of the offset of the axes of the bolt sections of the coupling bolt in relation to the circumferential extent of the locking point should be coordinated accordingly.
  • it is expediently connected to a lever.
  • the coupling pin should be captively guided in one of the coupling lugs.
  • the coupling straps are connected to the associated press jaw elements via hinge bolts and that recesses are provided in the region of the hinge bolts, can reach behind the locking elements of the locking device.
  • hinge pins simultaneously form the points of attack for the locking device.
  • At least one clamping device for contact with the inserted workpiece is attached to one side of the press ring, the clamping device (s) being able to have, for example, spring elements under spring tension.
  • the clamping devices are then in contact with the inserted workpiece, so that the workpiece that has been pushed over cannot slip off. This facilitates assembly, particularly in the case of vertical or inclined pipelines, and at the same time serves to axially secure the two workpieces which are plugged into one another.
  • the press tool according to the invention is not limited to the formation of the press ring with only one open closed position.
  • the pressing tool is intended for the pressing of large pipe diameters and is dimensioned accordingly in order to adapt it, it can be advantageous if the pressing ring has more than one closing point and a coupling member designed according to the invention is provided for each closing point.
  • This training enables the compression ring to be made from individual elements only on site, i.e. in the area of the pipe ends to be connected or even when the compression ring is folded around the pipe end one after the other. It is not excluded to provide a closing point that can be bridged with a coupling member even between all the pressing jaw elements.
  • the contraction of the press ring and thus the pressing of the pipe end with the press fitting can be done one after the other in such a way that the closing points are pulled together one by one with the help of the locking device.
  • one of the Number of locking points corresponding number of locking devices set and then the locking points are pulled together synchronously.
  • the same can also be achieved in that the pressing jaw elements are connected to one another outside the closing point (s) via removable hinge pins, because even then the pressing ring can be gradually assembled on site.
  • the pressing elements can also be connected there by means of intermediate pieces, to which the respectively adjacent pressing jaws are articulated by means of pivot pins, at least one of the pivot pins being removable per intermediate piece.
  • the pressing jaw elements each consist of a pressing jaw and a pressing jaw carrier, the pressing jaw in each case being displaceably mounted in the circumferential direction in the pressing jaw carrier and the coupling member or members being seated on the pressing jaw carriers and the pressing jaw carriers being connected to one another in an articulated manner.
  • the coupling member (s) can also be arranged directly on the press jaws.
  • Figure (1) the press ring of a press tool in the open state
  • Figure (3) shows a section through the coupling member of the
  • Figure (4) the coupling member in the illustration according to Figure (3) in a tensioned state
  • the press ring (5) has essentially identical press jaw elements (6, 7, 8, 9, 10), each press jaw element (6, 7, 8, 9, 10) consisting of an external press jaw carrier (11, 12, 13, 14, 15) and an inner, arcuate press jaw (16, 17, 18, 19, 20).
  • the press jaw carriers are connected to one another via intermediate pieces (21, 22, 23, 24), the press jaw carriers (11, 12, 13, 14, 15) being connected via articulated bolts (26, 27, 28, 29, 30, 31, 32, 33) are articulated on the intermediate pieces (21, 22, 23, 24).
  • At least one hinge pin (26, 27, 28, 29, 30, 31, 32, 33) per intermediate piece (21, 22, 23, 24) is designed to be removable, so that the press ring (5) is divided into individual press jaw elements (6, 7, 8, 9, 10) can be taken apart or assembled on site.
  • the press jaws (16, 17, 18, 19, 20) are mounted in the press jaw carriers (11, 12, 13, 14, 15) so as to be displaceable in the circumferential direction.
  • a clamping device (34, 35, 36, 37, 38) is attached to each press jaw support (11, 12, 13, 14, 15), which has a clamping punch (39, 40, 41, 42, 43).
  • the clamping devices (34, 35, 36, 37, 38) also serve to axially guide the press jaws (16, 17, 18, 19, 20).
  • the hinge pins (29, 30) on the central press jaw support (13) carry a jaw-like jig (44) in the form of a sheet metal part with a semicircular recess (45), the radius of the recess (45) being such that the jig (44 ) fits on the one hand over the pipe end (1), but on the other hand does not fit over the cylindrical part of the press fitting (2) adjoining the annular bead (3).
  • the lower press jaw elements (6, 10) have a closing gap (46) between them in the positions shown in FIGS. (1) and (2).
  • the free ends of the pressing jaw elements (6, 10) delimiting the closing gap (46) carry hinge pins (47, 48), a coupling tab (49, 50) being suspended from each hinge pin (47, 48).
  • the shape of the coupling straps (49, 50) and their connection with the hinge pins (47, 48) result in particular from the sectional representations according to FIGS. (3) and (4).
  • the free ends of the coupling tabs (49, 50) have through bores (51, 52).
  • a coupling pin (53) is inserted axially. It has a first bolt section (54) with which it passes through the through hole (51).
  • One end of the first pin section (54) is with a hand lever (55) connected.
  • a second pin section (56) is formed, the axis of which is offset by an eccentricity (57) with respect to the axis of the first pin section (54).
  • the second bolt section (56) fits into the through hole
  • the coupling tabs (49, 50) together with the coupling bolt (53) form a coupling member for the temporary connection of the ends of the press ring (5) before the actual pressing process.
  • the press ring (5) is first placed over the pipe end (1) and the press fitting (2), as can be seen from Figure (1).
  • the two lower press jaw elements (6, 10) are pivoted towards each other and onto the pipe end (1), so that they correspond to those shown in Figure (2 ) assume the position shown.
  • the coupling lugs (49, 50) which then still hang down and are shown in dash-dot lines in this position in FIG.
  • the coupling bolt (53) is in such a position that its second bolt section (56) does not protrude beyond the through bore (51), which is indicated in FIG. (3) by the position of the hand lever (55) shown in broken lines.
  • the coupling tabs (49, 50) are pivoted into a position where they overlap and the through holes (51, 52) merge into one another.
  • the coupling bolt (53) and thus the hand lever (55) are in such a position that the second bolt section
  • a locking device belonging to the pressing tool is used, as is known schematically from FIG. (7) of EP-A-0 451 806.
  • This locking device has two pincer-shaped lever arms with which the locking device can be attached to the hinge pins (47, 48). They cover gaps (58, 59) and (60, 61) and then lay on the outside of the hinge pin (47, 48). The pliers-like lever arms are then moved together by means of a hydraulic motor belonging to the locking device, so that the hinge pins (47, 48) approach each other.
  • the press ring (5) assumes the position shown in FIG. (4). After axial displacement of the coupling pin (53) in such a way that the second pin section (56) moves out of the through hole (52), the press ring (5) can be removed again and used for further pressing processes.
  • FIG. (6) shows a pressing tool (62) which is somewhat modified compared to the previously described embodiment.
  • the structure is basically the same as in the pressing tool (4) according to the figures (1) to (5), so that in the figure (6) parts that correspond to those in the pressing tool according to the figures (1) to (5) , are provided with the same reference numbers. For the description thereof, reference is made to the description of the first exemplary embodiment.
  • the pressing ring (63) of the pressing tool (62) shown in FIG. (6) has no clamping devices, but only guide plates 64, 65, 66, 67) in the same place.
  • the pressing jaw carriers (11, 12, 13, 14, 15) are not connected here by intermediate pieces, but rather each via pairs of coupling plates (68, 69) or (70, 71) or (72, 73) or (74 , 75) which are articulated on the hinge pins (26, 27, 28, 29, 30, 31, 32, 33) and are connected to one another via coupling pins (76, 77, 78, 79).
  • the design of the coupling plates (68, 69, 70, 71, 72, 73, 74, 75) and the coupling bolts (76, 77, 78, 79) is identical to that of the coupling plates (49, 50) and the coupling bolt (53) .
  • the press ring (63) is shown in a position in which the end faces of the press jaws (16, 17, 18, 19, 20) abut one another and which the press ring (63) assumes after a pressing process.
  • the press ring (63) can be Disassemble the pairs of coupling tabs (68, 69) or (70, 71) or (72, 73) or (74, 75) into the five press jaw elements (7, 8, 9, 10).
  • the subsequent pressing process can be done in two ways.
  • five locking devices can be attached to the pairs of hinge pins (26, 27) or (28, 29) or (30, 31) or (32, 33) or (49, 50) at the same time, so that the Distances between the press jaws (16, 17, 18, 19, 20) can be shortened at the same time when the locking devices are operated synchronously until mutual contact.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Clamps And Clips (AREA)
  • Press Drives And Press Lines (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Earth Drilling (AREA)

Abstract

Un outil servant au raccordement par pression de pièces à traiter comporte un anneau de serrage composé d'éléments de mâchoire articulés entre eux, l'outil étant ouvert en un point de fermeture au moins entre deux éléments de mâchoire où il présente les points d'application d'un dispositif de fermeture pouvant être réuni aux éléments de mâchoire pour former un anneau fermé. Afin de faciliter le maniement de cet outil en particulier pour des tubes de grands diamètres, on a prévu au moins un élément d'accouplement (49, 50) permettant de relier provisoirement les éléments de mâchoire (6, 10) voisins des ou du point(s) de fermeture (46), l'élément d'accouplement (45, 50) étant conçu de manière à être flexible dans le sens de la fermeture à l'état d'accouplement.
EP93924087A 1992-12-02 1993-11-02 Outil de raccordement par pression Expired - Lifetime EP0671984B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4240427A DE4240427C1 (de) 1992-12-02 1992-12-02 Preßwerkzeug
DE4240427 1992-12-02
PCT/EP1993/003050 WO1994012296A1 (fr) 1992-12-02 1993-11-02 Outil de raccordement par pression

Publications (2)

Publication Number Publication Date
EP0671984A1 true EP0671984A1 (fr) 1995-09-20
EP0671984B1 EP0671984B1 (fr) 1997-10-08

Family

ID=6474140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93924087A Expired - Lifetime EP0671984B1 (fr) 1992-12-02 1993-11-02 Outil de raccordement par pression

Country Status (19)

Country Link
US (2) US5666711A (fr)
EP (1) EP0671984B1 (fr)
JP (1) JP3395041B2 (fr)
CN (1) CN1093637A (fr)
AR (1) AR247932A1 (fr)
AT (1) ATE158964T1 (fr)
AU (1) AU668620B2 (fr)
BR (1) BR9307579A (fr)
CA (1) CA2150808A1 (fr)
CZ (1) CZ282915B6 (fr)
DE (2) DE4240427C1 (fr)
ES (1) ES2110120T3 (fr)
FI (1) FI952671A (fr)
NO (1) NO952177L (fr)
NZ (1) NZ257354A (fr)
PL (1) PL172228B1 (fr)
RU (1) RU2108184C1 (fr)
SK (1) SK66695A3 (fr)
WO (1) WO1994012296A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1389500A1 (fr) * 2002-08-12 2004-02-18 Mapress GmbH & Co. KG Outil de sertissage

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JP3395041B2 (ja) 2003-04-07
CN1093637A (zh) 1994-10-19
PL309044A1 (en) 1995-09-18
FI952671A0 (fi) 1995-06-01
JPH08503661A (ja) 1996-04-23
AU668620B2 (en) 1996-05-09
US5887329A (en) 1999-03-30
ES2110120T3 (es) 1998-02-01
US5666711A (en) 1997-09-16
CA2150808A1 (fr) 1994-06-09
FI952671A (fi) 1995-06-01
CZ282915B6 (cs) 1997-11-12
BR9307579A (pt) 1999-08-31
NO952177D0 (no) 1995-06-01
NO952177L (no) 1995-06-01
ATE158964T1 (de) 1997-10-15
PL172228B1 (pl) 1997-08-29
AR247932A1 (es) 1995-04-28
EP0671984B1 (fr) 1997-10-08
SK66695A3 (en) 1996-03-06
WO1994012296A1 (fr) 1994-06-09
RU2108184C1 (ru) 1998-04-10
DE59307516D1 (de) 1997-11-13
NZ257354A (en) 1997-06-24
DE4240427C1 (de) 1994-01-20
CZ138195A3 (en) 1996-04-17
AU5372794A (en) 1994-06-22

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