EP1531016B1 - Presswerkzeug - Google Patents

Presswerkzeug Download PDF

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Publication number
EP1531016B1
EP1531016B1 EP03025943A EP03025943A EP1531016B1 EP 1531016 B1 EP1531016 B1 EP 1531016B1 EP 03025943 A EP03025943 A EP 03025943A EP 03025943 A EP03025943 A EP 03025943A EP 1531016 B1 EP1531016 B1 EP 1531016B1
Authority
EP
European Patent Office
Prior art keywords
pressing
pressing tool
elements
tool
another
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
EP03025943A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1531016A1 (de
Inventor
Hans-Jörg Goop
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.)
Ridge Tool Co
Original Assignee
Ridge Tool Co
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
Priority to PT03025943T priority Critical patent/PT1531016E/pt
Application filed by Ridge Tool Co filed Critical Ridge Tool Co
Priority to ES03025943T priority patent/ES2287400T3/es
Priority to AT03025943T priority patent/ATE364461T1/de
Priority to DE50307476T priority patent/DE50307476D1/de
Priority to EP03025943A priority patent/EP1531016B1/de
Priority to JP2004309169A priority patent/JP4694174B2/ja
Priority to CA002486433A priority patent/CA2486433A1/en
Priority to US10/986,164 priority patent/US7146839B2/en
Publication of EP1531016A1 publication Critical patent/EP1531016A1/de
Application granted granted Critical
Publication of EP1531016B1 publication Critical patent/EP1531016B1/de
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
    • B21D39/048—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 using presses for radially crimping tubular elements
    • 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

Definitions

  • the invention relates to a pressing tool for pressing a receiving part of an installation element on an inserted into the receiving part tube, wherein the pressed-receiving part has a portion with a constant circumferential direction in the circumferential direction within a predetermined shape tolerance, according to the preamble of claim 1 (see, eg DE 93 14 054 U ).
  • the pressing tool For cold forming connecting an installation element - for example a fitting or a fitting - with a pipe, the pressing tool is applied around a receiving part of the installation element. Driving forces are introduced into the pressing tool via a drive device, whereby pressing forces are exerted on the receiving part, into which the tube is inserted, by the pressing tool. Due to the pressing forces of the receiving part is transformed so that the receiving part is permanently connected by an indentation with the inserted tube.
  • a receiving part in addition to at least one Aufpressabêt for forwarding longitudinal and torsional forces on a sealing portion for sealing the connection, whereby such a receiving part can be pressed sealingly on a pipe.
  • a narrow embossing area with a polygonal basic shape is also provided for the mechanical securing of the connection.
  • the sealing of the connection between pipe and installation element is usually via a sealing ring achieved, which is arranged facing the pipe on the inside of the sealing portion of the receiving part.
  • a sealing ring achieved, which is arranged facing the pipe on the inside of the sealing portion of the receiving part.
  • elastic compressive stress of the sealing ring against the pipe and against the receiving part and on the other hand avoiding pinching of the sealing ring is absolutely necessary.
  • Such a uniform compressive stress can only be achieved if, during the pressing-on of the receiving part, the sealing section is deformed circumferentially uniformly within a very specific circumference. Therefore, manufacturers of such installation elements type-specific predetermined shape tolerances, such as roundness or cylinder shape tolerances, given for pressed-receiving parts.
  • the shape tolerances relate in particular to the respective outer shape of the sealing area or possibly also of the entire press-on area.
  • scissors-like pressing tongs are known in practice, among other things, which open at one end like a mouth and at the other end are firmly connected to a drive device.
  • DN usually compression chains or compression rings are used, which must be disconnected at each application to a lovedpressendes installation element of the associated drive device.
  • the crimping tool has two pressing levers, on each of which a substantially rigid pressing jaw is provided at one end, and each of which is pivotable in opposite directions about an axis Connection plates are stored.
  • a substantially cylindrical mold is formed by the two press jaws, which is incorporated into the compact during pressing. Due to the given dimensions of such pressing tongs has been shown in practice that the handling in confined spaces, especially in the production of pipelines for domestic installations, cumbersome and pre-mounted Flttingen near the wall or floor is often not possible.
  • pressing tongs are known in which a special device for monitoring a complete closure of the two pressing jaws is provided.
  • a pressing tool for pressing a receiving part of an installation element on a tube inserted into the receiving part has two pressing elements which are movably connected to one another.
  • the receiving part has at least one section which is shaped in such a way by the pressing-on process, so that the pressed-on section has an outer shape substantially constantly curved in the circumferential direction, which lies within a predetermined shape tolerance, for example a roundness tolerance or a cylinder shape tolerance.
  • Each of the two pressing elements has, on the side facing the respective other pressing element, a pressing region which is assigned to the section.
  • At least one of the two pressing elements is elastically deformable, in particular elastically bendable, in such a way that, under the forces acting on the pressing element and changing during the pressing process, the shape of its pressing region changes.
  • the pressing area exposed in the stationary state of the pressing tool is in the circumferential direction in a shape deviating from the outer shape.
  • the same pressing region is in the circumferential direction in a substantially constant curved shape corresponding to the outer shape, when the pressing region abuts against the section in the pressing-on state of the closed pressing tool.
  • a pressing element according to the invention is no longer practically rigid, but deforms elastically under loads that act on the pressing element during pressing.
  • the elastic deformations which are caused by the driving forces exerted by the connection of the two pressing elements and the mecanicpressenden receiving part on the pressing element forces, targeted in the design of the pressing element, in particular in the shaping of the pressing area, taken into account.
  • the curvature of the pressing area exposed in the stationary state also deviates from the constant curvature of the required outer shape of the pressed-on section. Since in a novel pressing element instead of a high Rigidity elastic deformations are intended to be smaller, slimmer and lighter, press tools can be provided with which receiving parts can be pressed onto pipes whose sections are reproducible within the required shape tolerance.
  • a variable during the pressing process form of the pressing area offers additional possibilities to influence the pressing itself targeted. If the sum of the forming work required for the pressing and the work required for the elastic deformation of the pressing element is distributed as evenly as possible over the path covered by the driving forces during the pressing on when pressing on the receiving part, peak values of the driving forces occurring can be purposefully reduced. On the one hand, the fatigue strength and the long-term dimensional stability of pressing tools can be positively influenced. This also benefits in the dimensioning of such pressing tools are connected. On the other hand, such a pressing tool can also be operated with a less powerful drive device.
  • both pressing elements of a pressing tool in the same way, according to the invention elastically deformable, so that their pressing areas in the closed state of the tool assume a form corresponding to the required outer shape only under the mechanical loads occurring during pressing.
  • both pressing elements are sickle-shaped and connected at one end via a single bearing pin hinged together. At the other end, both pressing elements have an end piece, each with a force introduction region and a stop surface for the block drive of the tool.
  • This embodiment is characterized by a simple design and by a precisely guided movement of the two elastically bendable pressing elements.
  • a receiving part of an installation element in addition to a constant curved portion for a sealing element usually has a further section for non-detachable connection of the installation element with a pipe.
  • a further section for non-detachable connection of the installation element with a pipe For example, with receiving parts of smaller sizes is often another Stamping provided, which is formed into a hexagon.
  • a further section for permanent connection also often has a constant curvature, optionally with a cylindrical shape, in the pressed-on state.
  • a corresponding pressing element has a further pressing region assigned to the further section, in the shaping of which the elastic deformation of the pressing element is likewise to be taken into consideration.
  • a simple embodiment provides that the respective pressing region is formed by a plurality of segments arranged one behind the other, each having a constant curvature in the direction of rotation and tangentially strung together, whereby their centers of curvature are spaced from one another.
  • the clear width perpendicular to the closing plane of the pressing tool is less than the clear width substantially parallel to the closing plane.
  • FIG. 1 shows an installation element designed as a fitting 2, into which a pipe 3 is inserted at one end, and an embodiment of a pressing tool according to the invention, which is applied to the fitting 2, in an oblique view.
  • the pressing tool shown here has two pressing elements 5, which are identical here and have an elongated sickle-shaped basic shape.
  • a force introduction region 17 and a stop surface 20 are provided at one end.
  • a tension jaw can be applied, which in turn is connected to a drive device. From the Switzerlanddorfbacke two driving forces are exerted on the pressing tool 2 for pressing the fitting 2 on the tube.
  • the two pressing elements 5 are hinged together via a common bearing pin 18.
  • the fitting 2 shown here is a KIWA-DVGW copper fitting of nominal size DN 18 of the system supplier "Viega, Franz Viegner II, D-57428 Attendorn".
  • the fitting 2 has both ends a receiving part 1, which here in each case for a pipe. 3 the same nominal diameter is formed.
  • the tube 3, for example, a copper tube with one and a half millimeters wall thickness, is inserted at one end to a provided in the fitting 2 stop in this.
  • the one visible in Figure 1 receiving part 1 of the fitting 2 is in the non-pressed-initial state and has a rotationally symmetrical basic shape. In the non-pressed-receiving part 1 is still no tube 3 is inserted.
  • the receiving part 1 has a sealing portion 4, which is designed here as a bulge in the form of a Torushget, two Aufpressabête 21, which are arranged on both sides of the sealing portion 4, and two Eingargabitese 22, which are each adjacent to one of the Aufpressab mustarde 21.
  • the sealing portion 4 has on its inside a circumferential, also toroidal bulge, in which a only partially visible sealing ring 19 is provided.
  • the two pressing elements 5 are moved against each other until the two unfolded end pieces of the pressing elements 5 with their stop surfaces 20 abut each other.
  • the two pressing elements 5 By the mutual movement of the two pressing elements 5 forming forces are exerted flat on the réellepressenden receiving part 1, whereby this deformed plastically deforming and insoluble on the tube 3 is pressed.
  • the two pressing elements 5 By acting on the tool when forming the other receiving part, mechanical loads, the two pressing elements 5 are deformed elastically bending, since these - compared to the substantially rigid pressing jaws of a conventional pressing tongs - due to their dimensions a significant elastic flexibility in the loads occurring exhibit.
  • the extent and shape of the elastic deformation of the respective pressing member 5 are determined by its rigidity, the one end introduced driving force, the other end of the common bearing pin 18 force exerted and the opposite of the mecanicpressenden receiving part forming forces.
  • the two press-on sections 21 and the two embossing sections 22 are formed here in a cylindrical or hexagonal shape during pressing on by the pressing tool.
  • the press-on sections 21 are frictionally engaged or the press-fit sections 22 are connected in a form-fitting manner to the pipe 3.
  • About the embossed into the fitting 2 and the pipe 3 hexagon connections are generally smaller nominal sizes DN secured against pulling apart by small and medium pull-out forces. With larger nominal diameters DN, a cutting ring secures the connection against larger pull-out forces, which are usually arranged between a fitting and a tube inserted into it.
  • a receiving part of such a fitting has a securing area arranged around the cutting ring, which is deformed when pressed into an outer shape within a predetermined cylinder shape tolerance and thus exerts a specified compressive force on the cutting ring.
  • the toroidal bulge of the sealing portion 4 is, however, reformed in such a toroidal shape when pressing the fitting 2 on the tube 2 that the sealing ring 19 is elastically deformed in a controlled manner between the tube 3 and the bulge and thus biased to a defined extent.
  • compressive stresses are exerted on the one hand on the tube 3 and on the other hand on the bulge.
  • the compressive stresses exerted by the sealing ring 19 are of decisive importance for the tightness of the connection.
  • the quality and the reliability of the connection between an installation element and a pipe can be assessed via the dimensions of the external shape of the pressed-on receiving part 1. If the key width of the hexagon, which are embossed in the embossing regions 22, within a range of 23.1 to 23.6 millimeters, so a specified Auszugswert for the pressed connection is guaranteed by the manufacturer. Are the dimensions of the Outer shape of the sealing portion 4 of the pressed-receiving part 1 within a predetermined dimensional tolerance, it can be judged on the elastic deformation of the sealing ring 19 and thus on the fitting 2 and the pipe 3 of this exerted compressive stresses, the tightness of the connection.
  • a roundness tolerance with a lower and an upper diameter of 24.7 or 25.2 millimeters is specified by the manufacturer for the apex region of the toroidal bulge of the fitting 2.
  • FIG. 2 shows the upper pressing element 5 of the pressing tool from FIG. 1 in another oblique view.
  • the pressing element 5 has at one end the end piece with the stop face 20 and the force introduction region 17 visible only in FIG. At the other end it has a hinge part 23, in which a receiving bore for the bearing pin 18 shown only in Figure 1 is provided.
  • the pressing element 5 has, on the side facing the other pressing element, a torus-shaped pressing region 7, two cylindrical pressing regions 24 and two hexagonal pressing regions 25, at the two ends of which in each case a small, planar end region 26 adjoins.
  • the end regions 26 are formed by additional recesses in the pressing element 5.
  • the press areas 7 and 24 facing away from the ends of the end portions 26 are each provided with a radius.
  • a first pressing region 7 can be assigned to the sealing section 4 from FIG. 1 and has a two-dimensionally curved shape which has three different curvatures in the direction of rotation here.
  • the two cylindrical pressing portions 24 are arranged, which are each one of the Aufpressabête 21 of Figure 1 can be assigned. They have a one-dimensionally curved shape with here also three different curvatures.
  • the planar end regions 26 arranged between each of the pressing regions 7 and 24 and the abutment surface 20 on the one hand and the joint part 23 on the other hand have different lengths here.
  • FIG. 3 shows a detailed view of the closed pressing tool from FIG. 1 in the stationary state with the exposed pressing areas 7, 24 and 25 and the adjacent end areas 26 in a sectional view.
  • the pressing regions 7, 24 and 25 and the respective end regions 26 of the two pressing elements 5 are each arranged mirror-symmetrically to the closing plane 6. Since the tool is not exposed to mechanical loads in the stationary state, the pressing elements 5 and their exposed pressing areas 7, 24 and 25 are not deformed elastically.
  • the toroidal pressing region 7 is here by a central segment 10, a joint-side segment 11 and a stop-side segment 12 formed, which merge tangentially into each other.
  • the individual segments 10, 11 and 12 each have different curvatures in the direction of rotation.
  • the central segment 10 extends over an angular range of 120 ° and thus has the multiple size of the joint-side segment 11 and the stop-side segment 12, which in this case extend over an angular range of approximately 22 ° each.
  • the central segment 10 here in the circumferential direction has a central radius of curvature 14 of 12.35 millimeters, have the joint-side segment 11 and the stop-side segment 12 has a corresponding joint-side or stop-side radius of curvature-15 and 16 of 12.45 and 12.55 millimeters
  • the center of the central radius of curvature 14 additionally has a center offset 13 of 0.3 millimeters beyond the closing plane 6, as a result of which - in the stationary state of the tool - the banana shape of the torus-shaped pressing region 7 is additionally reinforced.
  • the centers of the joint-side and stop-side radii of curvature 15 and 16 are also beyond the closing plane 6.
  • the third pressing portion 25 is formed in the shape of a half of a hexagon.
  • FIG. 4 shows a scale comparison of the inner profiles of the same pressing element in the resting and in the pressing state of a closed pressing tool.
  • a continuous line 27 represents the inner profile of the pressing element in the stationary state with an exposed pressing area.
  • a broken line 28, however, represents the inner profile of the same pressing element in the pressing state of the closed tool.
  • the maximum difference at the apex of the pressing area in Aufklappcardi is slightly more than half a millimeter. This does not correspond to one percent of the nominal diameter of the press connection.
  • the difference of the clear width in the closing plane of the pressing tool has a value of slightly more than two millimeters, which corresponds to about 4 percent of the nominal diameter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Gripping On Spindles (AREA)
EP03025943A 2003-11-13 2003-11-13 Presswerkzeug Expired - Lifetime EP1531016B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
ES03025943T ES2287400T3 (es) 2003-11-13 2003-11-13 Herramienta de presion.
AT03025943T ATE364461T1 (de) 2003-11-13 2003-11-13 Presswerkzeug
DE50307476T DE50307476D1 (de) 2003-11-13 2003-11-13 Presswerkzeug
EP03025943A EP1531016B1 (de) 2003-11-13 2003-11-13 Presswerkzeug
PT03025943T PT1531016E (pt) 2003-11-13 2003-11-13 Ferramenta de compressão
JP2004309169A JP4694174B2 (ja) 2003-11-13 2004-10-25 プレス工具
CA002486433A CA2486433A1 (en) 2003-11-13 2004-11-01 Press tool
US10/986,164 US7146839B2 (en) 2003-11-13 2004-11-12 Press tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03025943A EP1531016B1 (de) 2003-11-13 2003-11-13 Presswerkzeug

Publications (2)

Publication Number Publication Date
EP1531016A1 EP1531016A1 (de) 2005-05-18
EP1531016B1 true EP1531016B1 (de) 2007-06-13

Family

ID=34429339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03025943A Expired - Lifetime EP1531016B1 (de) 2003-11-13 2003-11-13 Presswerkzeug

Country Status (8)

Country Link
US (1) US7146839B2 (ja)
EP (1) EP1531016B1 (ja)
JP (1) JP4694174B2 (ja)
AT (1) ATE364461T1 (ja)
CA (1) CA2486433A1 (ja)
DE (1) DE50307476D1 (ja)
ES (1) ES2287400T3 (ja)
PT (1) PT1531016E (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006004876U1 (de) * 2006-03-28 2007-08-02 Herrle, Richard Presswerkzeug, Pressring und Presszange
US20080029662A1 (en) * 2006-08-03 2008-02-07 O'rourke John F Tool holder attachment for rigid pipe tristand
US20090031778A1 (en) * 2007-08-01 2009-02-05 Emerson Electric Co. Multi-application crimping or pressing tool
US20090293577A1 (en) * 2008-05-28 2009-12-03 Emerson Electric Co. Jaw set and jaw set system with hinged jaw arms for use in a pressing tool
US8584503B1 (en) * 2012-10-09 2013-11-19 Rostra Tool Company Crimping tool
US9388885B2 (en) 2013-03-15 2016-07-12 Ideal Industries, Inc. Multi-tool transmission and attachments for rotary tool
DE102014103213B4 (de) * 2014-03-11 2015-11-26 Viega Gmbh & Co. Kg Pressaufsatz zum axialen Verpressen von Werkstücken
CN109092989B (zh) * 2018-06-28 2023-08-15 亿和精密工业（苏州）有限公司 一种用于工件卷圆成形的模具结构
KR200491617Y1 (ko) * 2019-01-21 2020-05-11 민우정공(주) 배관용 압착 체결구
US11398719B2 (en) 2019-04-30 2022-07-26 Eaton Intelligent Power Limited Press fit condulet devices, assemblies systems and methods for electrical raceway fabrication
US11996683B2 (en) 2020-10-19 2024-05-28 Eaton Intelligent Power Limited Compressible condulet devices, assemblies, systems and methods for electrical raceway fabrication
CN112571366A (zh) * 2020-12-16 2021-03-30 浙江青牛智能科技有限公司 一种管道内管拖拉装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213323A (ja) * 1984-04-10 1985-10-25 Mie Horo Kk 管材の接合装置における接合管材引寄せ機構
DE9314054U1 (de) 1992-11-10 1993-11-25 Geberit Ag, Jona, St.Gallen Preßzange zum Verpressen von Rohrverbindungen
JP2595302Y2 (ja) * 1993-09-27 1999-05-31 株式会社ダイア 携帯用パイプ接続機
US6234000B1 (en) * 1999-09-20 2001-05-22 Wiley L. Bowling Ball-bat repairing method
DE50006944D1 (de) * 1999-10-26 2004-08-05 Ridge Tool Ag Balzers Presswerkzeug und Verfahren zum kaltumformenden Verbinden von Werkstücken
US6471449B1 (en) * 1999-10-28 2002-10-29 Kyocera Corporation Throw-away tip with abrasion sensor
DE19963097C5 (de) * 1999-12-24 2017-04-27 Wezag Gmbh Werkzeugfabrik Zange zum Verpressen eines Werkstücks
ES2202030T3 (es) * 2000-01-07 2004-04-01 Von Arx Ag Pinza de prensado.
DE20018312U1 (de) * 2000-10-26 2001-05-10 Franz Viegener Ii Gmbh & Co Kg Preßwerkzeug

Also Published As

Publication number Publication date
EP1531016A1 (de) 2005-05-18
JP4694174B2 (ja) 2011-06-08
ES2287400T3 (es) 2007-12-16
PT1531016E (pt) 2007-08-21
DE50307476D1 (de) 2007-07-26
CA2486433A1 (en) 2005-05-13
JP2005144556A (ja) 2005-06-09
US20050145005A1 (en) 2005-07-07
ATE364461T1 (de) 2007-07-15
US7146839B2 (en) 2006-12-12

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