EP0628362A2 - Outil de pressage - Google Patents

Outil de pressage Download PDF

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Publication number
EP0628362A2
EP0628362A2 EP94110655A EP94110655A EP0628362A2 EP 0628362 A2 EP0628362 A2 EP 0628362A2 EP 94110655 A EP94110655 A EP 94110655A EP 94110655 A EP94110655 A EP 94110655A EP 0628362 A2 EP0628362 A2 EP 0628362A2
Authority
EP
European Patent Office
Prior art keywords
press
jaws
pressing
abutment
tool according
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
EP94110655A
Other languages
German (de)
English (en)
Other versions
EP0628362B1 (fr
EP0628362A3 (fr
Inventor
Helmut Dipl.-Ing. Dischler
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6404263&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0628362(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP0628362A2 publication Critical patent/EP0628362A2/fr
Publication of EP0628362A3 publication Critical patent/EP0628362A3/fr
Application granted granted Critical
Publication of EP0628362B1 publication Critical patent/EP0628362B1/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
    • B21D39/046—Connecting tubes to tube-like fittings
    • 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
    • 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
    • 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
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • 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
    • Y10T29/5367—Coupling to conduit

Definitions

  • the invention relates to a pressing tool, in particular for connecting tubular workpieces, with more than two arcuate pressing jaws which are movable relative to one another in such a way that they can be opened for placement on the workpiece and that they complement one another towards the end of the pressing to form a closed pressing space, and with at least one drive device for moving press jaws in the pressing direction.
  • Coupling sleeves are used to connect pipe ends, which are plastically deformable and made of metal, preferably steel. Their inner diameter is so much larger than the outer diameter of the pipe ends to be connected that they are permanently deformed in the event of radial compression until they rest against the outer surface of the pipe ends. According to DE-PS 1 187 870 ⁇ , such coupling sleeves can additionally have an annular groove on the inside near each end, into which an elastic sealing ring is inserted.
  • the radial compression takes place by means of pressing tools, as are known for example from DE-PS 21 36 782.
  • This pressing tool has two clamping arms, each with two arms, at least one of which is pivotably mounted on the pressing tool.
  • the press jaws have press surfaces which form circular arc sections and have the same radii, which enclose a press space. Instead of being circular arc sections, the pressing surfaces can also be contoured, for example to form a polygonal or oval pressing space.
  • the arms of the press jaws located distant from the press chamber can be spread against the action of a spring, with the result that the press jaws are moved against one another in the region of the press chamber.
  • the spreading takes place by means of pressure rollers which are arranged next to one another and abut one another and which are moved together between the arms by means of a drive device in the form of a working cylinder and in this way pivot the press jaws.
  • the clamping jaws When pivoting the drive lever in the opposite direction, the clamping jaws are pivoted again so that the perpendicular to their arc sections approximately collapse and the clamping jaws are moved parallel to each other when the drive lever is pivoted further. During the pressing process, the clamping jaws are moved further towards one another until they enclose a circular surface at the end of the press and have deformed the pipe ends or the coupling sleeve accordingly with a reduction in diameter.
  • This press tool has proven itself if one is not too big Reduction in diameter or press-in depth is required. At greater press-in depths, which are necessary if the pipe connection is to withstand higher internal pressures, it is recommended to provide more than two press jaws so that there is no formation of outwardly projecting webs between the end faces of the press jaws, which leads to a complete closing of the press jaws would prevent.
  • Such pressing tools are described for example in DE-OS 21 18 782, DE-OS 35 13 129, DE-AS 25 11 942 and DE-AS 19 0 ⁇ 7 956. All pressing tools disclosed therein have in common that all pressing jaws are movable and guided in the radial direction. This requires complex guides and drive devices, which makes the pressing tools difficult and therefore difficult to handle and also expensive.
  • the invention is therefore based on the object of designing a press tool of the type mentioned in such a way that, despite the arrangement of more than two press jaws, it is as simple as possible and thus easy to handle and can be produced inexpensively.
  • one of the press jaws is designed as an abutment which can be attached to the workpiece and that the other press jaws are movable by means of the drive device (s) and are guided in such a way that they each move in the direction of the pressing process Move the center of the press chamber in the closed state of the press tool, the abutment being designed as an abutment bracket located at the free end of the press tool, which is pivotably mounted on one side and which can be released or locked on the opposite side. This abutment bracket can be pivoted away when the pressing tool is attached to the pipe ends to be connected or to the coupling sleeve.
  • the movable press jaws can then be moved in the direction of the abutment by means of the drive device. It is advisable if the press jaws are guided such that they can move relative to one another in such a way that their respective opposite end faces have the same spacing at the start of the press.
  • the press tool according to the invention is characterized by a simple structure, since one of the press jaws is designed as an abutment and thus does not require a guide or a drive device.
  • the other pressing jaws are guided and driven so that they move in very specific directions during the pressing process, namely towards the center of the pressing space in the closed state of the pressing tool. This is very important for the same forces acting on the workpiece from all sides.
  • the press jaws have circular arc sections of equal length in the circumferential direction, that is to say the gaps between the opposite end faces of the press jaws are distributed uniformly over the circumference.
  • the directions of movement of the two movable press jaws should include an angle of 60 °, which is symmetrical to the perpendicular to the abutment and opens away from it.
  • the directions of movement of the two press jaws adjacent to the abutment should include an angle of 90 ° during the pressing process, which is symmetrical to the perpendicular to the abutment and opens away from it.
  • the movable press jaws rest on the one hand on guide devices which determine their directions of movement and on the other hand on a press ram which is movable in the direction of the abutment and which is connected to the drive device (s) and on which the abutment neighboring press jaws are slidably mounted.
  • a further press jaw rests on the press die or is connected thereto, which faces the abutment.
  • the press ram is part of the drive device and can be designed, for example, as a hydraulic cylinder or connected to one.
  • a separate drive device can also be provided for each movable press jaw, for example, again a hydraulic cylinder. This can have a press or tension stamp.
  • a press tool 1 is shown, namely its upper head part. It has a tool housing 2 which is hollow on the inside and initially widens towards the bottom and then tapers. In the central area, it has a U-shaped recess 3.
  • the free ends of the recess 3 are connected by an abutment bracket 4.
  • the abutment bracket 4 is pivotally mounted on its right side in this view about a bearing pin 5. On the left side in this view, the abutment bracket 4 is fixed in the position shown via a locking pin 6. This locking pin 6 passes through corresponding recesses in the tool housing 2 and in the abutment 4 and can be easily removed. After its removal, the abutment bracket 4 can be pivoted about the bearing pin 5 in the directions of the double arrow A, clockwise so far that the recess 3 is completely open towards the top.
  • the abutment bracket 4 has a pressing surface 7 which has the shape of a circular arc and extends over an angle of 120 ° symmetrically to the longitudinal axis of the pressing tool 1.
  • the pressing surface 7 has a groove which runs in the circumferential direction and is open inwards. It can be exchangeably attached to the abutment bracket 4.
  • oblique guide surfaces 8, 9, which enclose an angle of 60 ° and are mirror-symmetrical to the longitudinal axis of the pressing tool 1.
  • the pressing jaws 10 ⁇ , 11 are also mirror-symmetrical to the longitudinal axis of the pressing tool 1 and each have a pressing surface 14, 15 which are each designed as circular arc sections extending over 120 °.
  • a circumferential groove is also formed on the inside.
  • the circular arc sections of all pressing surfaces 7, 14, 15 have identical radii.
  • the press jaws 10 ⁇ , 11 protrude on the underside into a guide groove 16 which runs horizontally and transversely to the longitudinal axis of the press tool 1 and is formed in the head 17 of a press ram 18.
  • the undersides of the pressing jaws 10 ⁇ , 11 also run horizontally, so that the pressing jaws 10 ⁇ , 11 are guided in the groove 16 so as to be displaceable in the groove 16 transversely to the longitudinal axis of the pressing tool 1, namely in the manner of a dovetail guide.
  • transverse blind holes 19, 20 ⁇ are formed, which are coaxial to each other.
  • a compression spring 21 is used, which strives to press the pressing jaws 10 ⁇ , 11 outwards and thus over the contact surfaces 12, 13 to the guide surfaces 8, 9.
  • the press die 18 is mounted such that it can move linearly vertically in the direction of the longitudinal axis of the press tool 1 (double arrow B). It is operated by a pneumatic or hydraulic working cylinder actuated, which is not shown here.
  • the locking of the abutment bracket 4 is first released by means of the locking pin 6, i. H. this locking pin 6 is pulled out and the abutment bracket 4 is pivoted clockwise until the fork-shaped opening of the recess 3 is completely free.
  • the press ram 18 is in a downward withdrawn position.
  • the pressing tool 1 can then be attached to a coupling sleeve 22 such that the coupling sleeve 22 extends perpendicular to the plane of the drawing through the recess 3 and is received by the latter.
  • the abutment 4 is pivoted around the coupling sleeve 22 and locked by inserting the locking pin 6.
  • the coupling sleeve 22 is then enclosed by the press tool 1.
  • the press jaws 10 ⁇ , 11 are then brought into contact with the coupling sleeve 23 by raising the press ram 18. Since its radius is smaller than the radius of the coupling sleeve 22 before pressing by the intended insertion depth, the pressing surfaces 7, 14, 15 rest only on the circumference of the coupling sleeve 22 with their outer transverse edges. Between the end faces of the pressing jaws 10 ⁇ , 11 and the abutment bracket 4 are still free gaps 23, 24, 25, which are the same size.
  • the radii of the circular arc sections of the pressing surfaces 7, 14, 15 start from central points which lie in the tips of an equilateral triangle.
  • the press ram 18 is now moved upward by further pressurization.
  • the press jaws 10 ⁇ , 11 slide over their contact surfaces 12, 13 over the guide surfaces 8, 9, whereby a direction of movement extending in the directions of the double arrows C, D is impressed on them.
  • the two directions of movement include the same angle as the guide surfaces 8, 9, ie 60 °.
  • the press jaws 10 ⁇ , 11 slide in the groove 16 of the press ram 18 at the same time horizontally towards each other, against the action of the compression spring 21. In this way, the coupling sleeve 22 is compressed radially, that is, its diameter is reduced by the desired press-in depth.
  • a circular press space is enclosed by the press surfaces 7, 14, 15 and the gaps 23, 24, 25 have been reduced to zero.
  • the press ram 18 is moved back again.
  • the abutment bracket 4 is pivoted away after removing the locking bolt 6, so that the pressing tool 1 can then be removed.
EP94110655A 1990-04-12 1991-04-10 Outil de pressage Expired - Lifetime EP0628362B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4011822 1990-04-12
DE4011822 1990-04-20
EP91105662A EP0451806B1 (fr) 1990-04-12 1991-04-10 Outil de pressage

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP91105662.0 Division 1991-04-10
EP91105662A Division EP0451806B1 (fr) 1990-04-12 1991-04-10 Outil de pressage

Publications (3)

Publication Number Publication Date
EP0628362A2 true EP0628362A2 (fr) 1994-12-14
EP0628362A3 EP0628362A3 (fr) 1995-06-14
EP0628362B1 EP0628362B1 (fr) 1998-06-17

Family

ID=6404263

Family Applications (4)

Application Number Title Priority Date Filing Date
EP91105663A Expired - Lifetime EP0452791B1 (fr) 1990-04-12 1991-04-10 Outil de pressage
EP91105662A Expired - Lifetime EP0451806B1 (fr) 1990-04-12 1991-04-10 Outil de pressage
EP94110654A Expired - Lifetime EP0627273B1 (fr) 1990-04-12 1991-04-10 Outil de pressage
EP94110655A Expired - Lifetime EP0628362B1 (fr) 1990-04-12 1991-04-10 Outil de pressage

Family Applications Before (3)

Application Number Title Priority Date Filing Date
EP91105663A Expired - Lifetime EP0452791B1 (fr) 1990-04-12 1991-04-10 Outil de pressage
EP91105662A Expired - Lifetime EP0451806B1 (fr) 1990-04-12 1991-04-10 Outil de pressage
EP94110654A Expired - Lifetime EP0627273B1 (fr) 1990-04-12 1991-04-10 Outil de pressage

Country Status (8)

Country Link
US (1) US5148698A (fr)
EP (4) EP0452791B1 (fr)
JP (2) JP3334892B2 (fr)
AT (4) ATE175599T1 (fr)
CA (2) CA2040277C (fr)
DE (5) DE9007414U1 (fr)
DK (4) DK0452791T3 (fr)
ES (4) ES2129089T3 (fr)

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EP2508275B1 (fr) 2011-04-04 2014-09-10 Novopress GmbH Pressen und Presswerkzeuge & Co. KG Outil de pression ainsi que utilisation d'un tel outil de pression
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US10226826B2 (en) 2013-10-22 2019-03-12 Milwaukee Electric Tool Corporation Hydraulic power tool
DE102014115358A1 (de) * 2014-10-22 2016-04-28 Michael Schmitz Presswerkzeug
CN105798169B (zh) * 2016-03-16 2018-09-04 成都艾亿洋机电有限公司 一种卡压钳
CN106583569B (zh) * 2017-01-23 2018-02-23 湖南金峰金属构件有限公司 一种多单元组合冷挤压机
DE102019217816A1 (de) 2018-11-29 2020-06-04 Ridge Tool Company Werkzeugköpfe für scherarbeiten
CN112122471A (zh) * 2020-06-28 2020-12-25 浙江赛格园林机械有限公司 一种环状击打缩管机
CN112122472A (zh) * 2020-06-28 2020-12-25 浙江赛格园林机械有限公司 一种缩管机的缩管装置
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US3823597A (en) * 1973-07-02 1974-07-16 Mc Donnell Douglas Corp Swaging tool die extender
US4528740A (en) * 1983-04-18 1985-07-16 Msw Corporation Shrink ring clamp assembly

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US2211008A (en) * 1940-02-07 1940-08-13 Martin J Goldberg Hose coupling attaching apparatus
US3276238A (en) * 1964-05-18 1966-10-04 Waldes Kohinoor Inc Plier-like assembly tool
FR2086319A1 (fr) * 1970-04-24 1971-12-31 Dresser Ind
US3823597A (en) * 1973-07-02 1974-07-16 Mc Donnell Douglas Corp Swaging tool die extender
US4528740A (en) * 1983-04-18 1985-07-16 Msw Corporation Shrink ring clamp assembly

Also Published As

Publication number Publication date
EP0452791B1 (fr) 1994-09-14
DK0451806T3 (da) 1995-05-22
EP0627273B1 (fr) 1999-01-13
JP3334892B2 (ja) 2002-10-15
ATE116880T1 (de) 1995-01-15
EP0452791A1 (fr) 1991-10-23
ATE111385T1 (de) 1994-09-15
CA2040277C (fr) 2001-12-04
DK0627273T3 (da) 1999-09-06
DE59104196D1 (de) 1995-02-23
JPH0768329A (ja) 1995-03-14
ES2129089T3 (es) 1999-06-01
CA2040278A1 (fr) 1991-10-13
JPH0768330A (ja) 1995-03-14
DE59109090D1 (de) 1999-02-25
DE59109090C5 (de) 2011-01-05
ES2067077T3 (es) 1995-03-16
ATE167414T1 (de) 1998-07-15
EP0627273A2 (fr) 1994-12-07
DE9007414U1 (fr) 1991-07-18
DK0628362T3 (da) 1999-04-06
EP0451806B1 (fr) 1995-01-11
EP0628362B1 (fr) 1998-06-17
CA2040277A1 (fr) 1991-10-13
DE59102895D1 (de) 1994-10-20
ATE175599T1 (de) 1999-01-15
EP0451806A1 (fr) 1991-10-16
DE59109014D1 (de) 1998-07-23
ES2062596T3 (es) 1994-12-16
DK0452791T3 (da) 1994-12-12
ES2119935T3 (es) 1998-10-16
US5148698A (en) 1992-09-22
CA2040278C (fr) 2001-10-02
EP0628362A3 (fr) 1995-06-14
EP0627273A3 (fr) 1995-06-14

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