EP3209440A1 - Presswerkzeug - Google Patents
PresswerkzeugInfo
- Publication number
- EP3209440A1 EP3209440A1 EP15783970.5A EP15783970A EP3209440A1 EP 3209440 A1 EP3209440 A1 EP 3209440A1 EP 15783970 A EP15783970 A EP 15783970A EP 3209440 A1 EP3209440 A1 EP 3209440A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- pressing
- jaw
- tool
- segment
- 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
Links
- 238000003825 pressing Methods 0.000 title claims abstract description 157
- 230000008878 coupling Effects 0.000 claims abstract description 21
- 238000010168 coupling process Methods 0.000 claims abstract description 21
- 238000005859 coupling reaction Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims description 28
- 230000008569 process Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 230000000977 initiatory effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000002788 crimping Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007646 directional migration Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B7/00—Presses characterised by a particular arrangement of the pressing members
- B30B7/04—Presses characterised by a particular arrangement of the pressing members wherein pressing is effected in different directions simultaneously or in turn
-
- 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 invention relates to a pressing tool and a method for radial
- Pressing jaws are displaceably mounted. By contraction of the press loop, the pressing jaws are moved radially inwardly and thus cause a corresponding pressing of a looped by the tool tube.
- a pressing tool according to the present invention is used as described above, the radial compression of workpieces, for example, fittings on pipes.
- the pressing tool contains the following components: A ring of ring segments, wherein the ring coupling points, via which in each case a closing of the ring causing tensile force can be introduced into the ring.
- the ring is open between two coupling points (alternatively, it could also be closed if this would allow further closing of the ring, ie a reduction in circumference).
- the coupling points are typically at the ring ends.
- At least one movable on a ring segment (opposite to the
- Ring segment mounted pressing jaw, which in the following to
- the tension press jaw is a component which comes into direct contact with the workpiece during the pressing process.
- the tension-pressing jaw therefore typically has on its inner side the contour which is to be impressed on the workpiece.
- the pressing tool is further characterized in that the ring includes a sub-ring, which consists of one or more ring segments, which are coupled to each other traction-transmitting, wherein further one end of the sub-ring is coupled traction-transmitting to the first train-pressing jaw.
- the partial ring is also referred to below as the "first partial ring”.
- the sub-ring is a train-transferring chain from a first end of the sub-ring to the train press jaw produced.
- one of the above-mentioned coupling points is arranged at the first end of the partial ring, via which a closing force of the ring is introduced into the entire ring.
- a tensile force can be generated, for example, by an external tool (so-called "pressing tongs").
- pressing tongs an external tool
- the tensile force for closing the ring is not closed in a circle from one ring segment to the next transmitted, but via the sub-ring directly to the train-pressing jaw. In practice it turns out that thereby the pressing forces to be applied can be reduced and that a better pressing result can be achieved by a uniform radial inward movement of pressing jaws.
- a general device should preferably be regarded as a "traction-transmitting", if it has a first point for the attack of a (tensile) force and a second point for the transfer of (possibly by size and / or direction
- the (tensile) force introduced at the first point can always be compensated by a suitable counter-pull force introduced at the second point, so that the first point does not (initially) move in the direction of the (tensile) force introduced. Power moves.
- two elements e.g., two
- Ring segments or a ring segment and the train-pressing jaw as "traction coupled coupled" when it is under the action of the tensile force
- Traction-transmitting is, for example, a tensioned cable or a tensioned wire rope (but not a rolled, loose chain with play in the chain links).
- a "tensile force" also be defined by being substantially tangential with respect to the center of a too
- clamping forces acting on the pressing jaws are typically substantially radial with respect to the center of the workpiece.
- the invention further relates to a corresponding method for the radial compression of workpieces, wherein the method can be carried out in particular with a pressing tool of the type described above.
- Method comprises introducing a tensile force into coupling points of a ring of ring segments to effect the closing (circumferential reduction) of the ring, said tensile force being transmitted via a first sub-ring of tensile-transmitting ring segments to a first tensile pressing jaw movably mounted on a ring segment is.
- the first pull-press jaw is usually mounted on a ring segment that does not belong to the first part ring. About the connection of the train-pressing jaw to the supporting ring segment, the transmission of the tensile force can be continued.
- a second sub-ring of (one or more) tensile-transmitting ring segments is present, one end of which train is coupled by force-ü transferring to a second train-pressing jaw, which is movable on a ring segment (preferably on the inside) is stored.
- the ring segments constituting the second sub-ring are typically different from those of the first sub-ring.
- the first and second train-pressing jaw are usually different and also stored on different ring segments.
- all ring segments of the pressing tool are either part of the first part ring or the second part ring.
- the first and the second partial ring may be designed differently, for. B. by consisting of different numbers of ring segments.
- the second partial ring is constructed substantially symmetrically to the first partial ring.
- the "symmetry" can lie on an abstract, functional level (ie both partial rings contain corresponding numbers of ring segments with correspondingly arranged pressing jaws).
- the symmetry may also be geometric in the narrower sense (in particular as mirror symmetry to a median plane). The symmetry on the one hand achieves a more uniform effect of the tool.
- the production costs can be reduced by using the same or symmetrical components. If in the present text embodiments of the invention are described with reference to "the sub-ring” and / or "the train press jaw", these equally apply equally to the first sub-ring or the first pull-pressing jaw and the second sub-ring or second pull-press jaw.
- the first tensile pressing jaw is preferably movably mounted on a terminal (proximal) ring segment of the second partial ring.
- the first pull-press jaw thus provides a
- the second pull-pressing jaw may be mounted on a terminal ring segment of the first partial ring.
- terminal ones may be used
- Ring segments of the first part ring and the second part ring be coupled together via a link. This means that direct power transmission between these ring segments and thus between the sub-rings are possible, but by a mobility corresponding to the backdrop, however certain
- At least two ring segments of the pressing tool can optionally be coupled to one another via a hinge joint (swivel joint).
- a hinge joint sewivel joint
- all ring segments that belong to the first sub-ring (and / or all ring segments that belong to the second sub-ring) are coupled to each other via a hinge joint.
- a pull can be transmitted completely via a hinge joint.
- the first part-ring in a joint which permits a rolling and / or displacement movement perpendicular to the respective direction of the tensile force acting there, be coupled to the first pull-pressing jaw (and / or analogously, the second part-ring to the second train - Pressing jaw).
- the resulting freedom of movement can be used to allow a uniform, radially inwardly directed migration of the Switzerland- press jaw.
- At least one pressing jaw is movably arranged on each ring segment (preferably on the respective inner sides).
- the mobility of at least one pressing jaw (including the tension pressing jaw (s)) relative to the associated ring segment may in particular be a displacement movement in the circumferential direction (relative to a circular workpiece to be machined). Due to the flexibility of the pressing jaws, these can be mounted on a workpiece independently of the
- the movable pressing jaws of the pressing tool are preferably mounted so that they before and / or during a pressing process in
- each individual pressing jaw moves in a straight line radially inwards towards the center of the workpiece to be pressed. Since the movement of the pressing jaws during a pressing process usually also depends on the machined workpiece, for example on the surface finish of a fitting, the above condition ideally relates to the case of a work piece formed identically to all the pressing jaws, in particular one
- the pressing jaws of the pressing tool in particular on an in
- Circumferentially extending sliding surface (which is usually located on an associated ring segment) may be stored so that they themselves (only) in the circumferential direction (relative to the ring segment) can move.
- At least one spring element may be present which presses a movable pressing jaw of the pressing tool in a predetermined direction.
- the spring element can
- Press jaw before starting a pressing process when the pressing jaw is not yet affected by the friction to the workpiece, press against a stop in a predefined position. This situation can be characterized in particular
- the pressing tool includes a holding device, via which a first ring segment with respect to a
- the holding device is designed to hold the ring segments alternatively under two defined angular positions.
- the held angular positions can in particular a
- the aforementioned holding device can be realized in various ways. It may for example comprise a spring-loaded pin, which is mounted on a ring segment and against which a cam of an adjacent
- the coupling points can be arranged in this regard for the attachment of a closing pliers, wherein the jaws of the pliers can contract the ends of the ring under the introduction of tensile forces.
- Fig. 1 is a schematic diagram of a pressing tool according to the present invention
- Figure 2 is a plan view (center), a view from above (top), a view from below (below), and a side view (right) of a concrete embodiment of a pressing tool according to the invention in the unfolded state.
- FIG. 3 is a perspective view of the pressing tool of FIG. 2; FIG.
- Fig. 4 is a section along the line IV-IV of Figure 2;
- Fig. 5 is a perspective view of the pressing tool in
- Fig. 6 is a plan view of the pressing tool of Fig. 5;
- FIG. 7 is a side view of the pressing tool of FIG. 5;
- FIG. FIG. 8 shows a section along the plane VIII-VIII of FIG. 7;
- Fig. 9 is a section along the plane IX-IX of Figure 7;
- Fig. 1 1 is a plan view of the pressing tool of Figure 10;
- Fig. 12 is a side view of the pressing tool of Fig. 10;
- FIG. 13 shows a section along the plane XIII-XIII of FIG. 12;
- Fig. 14 is a section along the plane XIV-XIV of Fig. 12;
- FIG. 15 shows a distal ring segment
- FIG. 16 shows a proximal ring segment
- FIG. 17 shows a distal pressing jaw
- FIG. 18 shows a tension press jaw
- FIG. 1 schematically shows in this respect a pressing tool 1 which is designed according to the present invention.
- the tool 1 has a plurality of (in the illustrated examples, four) pressing jaws 1 1, 12, 1 1 ', 12', which (not shown) can be arranged around a workpiece to be machined and in the pressing process in direct contact with this.
- a ring 20, 20 ' is present (also called a press chain or press sling), which wraps around the press jaws on the outside and two at its ends Coupling points K, K ', at which a tensile force F, F' can be initiated (eg by means of a pressing tongs according to Figure 19, 20).
- the ring is designed so that it can transmit continuous tensile force from one coupling point K to the other ( ⁇ '), for example by being made up of segments which are all interconnected by means of rotary joints.
- the tensile force is passed along the ring 20, 20 'and deflected. It runs in each case substantially in the circumferential direction, i. tangential with respect to the center of the workpiece to be machined.
- Deviate ring segments a first partial ring 20 is provided in the ring, which extends from a first coupling point K to a point R on a pressing jaw 12 ', which is hereinafter referred to as "first pull-pressing jaw".
- the first partial ring 20 which is indicated only schematically as a line in FIG. 1, typically consists of ring segments which are coupled to one another in an articulated manner.
- the tensile force F introduced at the coupling point K is along the first
- Sub-ring 20 forwarded (and deflected) and finally transmitted at the point R on the first train-pressing jaw 12 '.
- a tensile force is not completely in the closed circle at all Pressing jaws led around, but only partially led around some pressing jaws and directly introduced into another pressing jaw (the "pull-press jaw”).
- This (tensile) pressing jaw is typically at one
- Partial ring 20 ' is present, which is functionally and geometrically mirror-inverted to the first part-ring 20 (i.e., it extends from the second coupling point K' to a second "tension-press jaw" 12 to which it is tractionally coupled).
- the first pull press jaw 12 ' is mounted on the inside of the second part ring 20' (typically it is displaceably mounted on one of the ring segments of the second part ring 20 '), while the second pull press jaw 12 lies on the inside of the first part ring 20 ( typically as well
- Partial rings 20, 20 ' Partial rings 20, 20 '.
- the first tensile pressing jaw 12 ' on which a tensile force is exerted by the first partial ring 20, is pressed radially inwardly by the second partial ring 20' (and thus prevented from being pulled easily
- Partial ring 20 is pressed radially inward and held in place. Due to the entanglement of the partial rings 20, 20 'is thus a falling apart of the
- FIGS. 2 to 18 show a pressing tool 100 according to a specific embodiment
- FIGS. 2-4 show different views of the pressing tool 100 in its open position, in which it can be wrapped around a tube (not shown) or the like.
- the crimping tool 100 includes a first split ring 120 having a distal ring segment 121 and a proximal ring segment 122 coupled together by a hinge joint G1. Furthermore, the first partial ring 120 includes a terminal at its distal, distal ring segment 121
- Coupling point K (for example a bolt), on which a jaw of a pressing tongs ( Figures 19, 20) can engage and initiate a tensile force.
- On the inner sides of the ring segments 121, 122 are each movable in displacement press jaws 1 1 1, 1 12 stored.
- the pressing tool 100 further includes a second sub-ring 120 ', which is constructed in mirror image to the first sub-ring 120, wherein corresponding parts carry the same, labeled reference numerals.
- Ring segment 122 'of the second part of the ring 120' tensile force-transmitting via a joint G2 to the second train-pressing jaw 1 12 couples (which in turn is displaceably mounted on the proximal ring segment 122 of the first partial ring 120).
- FIG. 4 shows that, for example, a bolt connected to the proximal ring segment 122 of the first partial ring 120 in the joint G2 'engages through a slot L' of the proximal ring segment 122 'of the second partial ring 120', the size and orientation of the elongated hole L 'being such in that during a typical pressing process no direct
- Power transmission between the two partial rings 120, 120 'takes place (at least no power transmission with a substantial tangential component in the circumferential direction).
- FIG. 4 also shows two holding devices, via which in each case one distal ring segment 121 (or 121 ') is stable relative to the adjacent proximal ring segment 122 (or 122') in the open position (FIG. 4) or in a closed position (FIG. 9) is held.
- the holding devices are in each case formed symmetrically on the first partial ring 120 and second partial ring 120 '.
- the holding device on the first partial ring 120 consists essentially of a spring pin 125, which is mounted in a bore of the proximal ring segment 122 and by the force of a spring (not shown) pushed out out of the bore.
- the spring pin 125 presses with its round head against a protruding cam or nose of the distal ring segment 121 and is thus retained in the bore.
- Ring segment 121 stabilized.
- One and the same mechanism is thus exploited to lock two different working positions of the pressing tool 100 (reversible), which facilitates the application of the tool accordingly.
- the crimping tool 100 is shown in a loosely-closed position, which it assumes after it has been wrapped around a still-unpressed workpiece.
- the construction of the tool is such that between the four pressing jaws in 1 1 1, 1 12, 1 1 1 ', 1 12' each have the same size as possible equal distances ⁇ . This is u.a. achieved by the pressing jaws 1 1 1, 1 12 and 1 1 1 ', 1 12' by springs (not shown) in each case in the direction of the coupling points K and K 'are pressed.
- the second pull-pressing jaw 1 12 can be coupled via elongated holes or extended round holes 1 12b to the bolt, which forms the joint G2 and which is rotatably coupled in a round hole with the proximal ring segment 122 '(see.
- the shape of the hole 1 12b is chosen so that during the pressing process, the bolt of the joint G2 is substantially always perpendicular to the edge of the hole and thus can transmit tensile force, without causing a relative displacement movement between train-pressing jaw 1 12 and
- Ring segment 122 'comes while at the same time for geometric reasons necessary migration of the bolt in the hole 1 12b is possible.
- the bolt is then located at the other end of the oblong hole 12b (see FIG.
- a similar effect could also be achieved by a round hole on the train press jaw 1 12 in conjunction with a slot on the ring segment 122 'and / or by a non-circular bolt.
- an analogous structure is also present for the joint between the first tension press jaw 12 'and the ring segment 122.
- Ring segments are formed. As explained, this movement is preferably such that always equal distances ⁇ remain between the pressing jaws. This is not least due to a suitable shaping of the
- the pressing operation is carried out by applying a crimping pliers (FIGS. 19, 20) or the like to the coupling points K, K 'and exerting tensile forces F, F' thereon, which result in a closing of the ring.
- a crimping pliers FIGS. 19, 20
- FIGS. 15-18 show perspective views of the ring segments or pressing jaws from which the pressing tool 100 according to the invention
- FIG. 19 shows an example of a pressing tongs Z, which can be used to close the ring of the pressing tool 100. Shown is the open position in which the jaws 151, which are to be attached to the coupling points K, K ', are far apart. If a e.g. hydraulically driven punch (not shown) is applied to the lower end of the pressing tongs Z and their arms pressed apart, the jaws 151 move toward each other. The pressing tongs Z with a closed position of
- the illustrated two pressing jaws in each ring half ie the pressing jaws 1 1, 12 or 1 1 ', 12' or 1 1 1, 1 12 or 1 1 1 ', 1 12'
- the illustrated two pressing jaws 1 1, 12 or 1 1 ', 12' or 1 1 1, 1 12 or 1 1 1 ', 1 12' could also be a single semi-annular Be connected pressing jaw.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014115255 | 2014-10-20 | ||
DE102014115358.8A DE102014115358A1 (de) | 2014-10-22 | 2014-10-22 | Presswerkzeug |
PCT/EP2015/072670 WO2016062515A1 (de) | 2014-10-20 | 2015-10-01 | Presswerkzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3209440A1 true EP3209440A1 (de) | 2017-08-30 |
EP3209440B1 EP3209440B1 (de) | 2021-06-02 |
Family
ID=54337730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15783970.5A Active EP3209440B1 (de) | 2014-10-20 | 2015-10-01 | Presswerkzeug zum radialen verpressen von werkstücken |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3209440B1 (de) |
WO (1) | WO2016062515A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10710224B1 (en) * | 2018-04-04 | 2020-07-14 | The Government Of The Unitied States Of America As Represented By The Air Force | Vacuum system assembly tool |
CN112718798A (zh) * | 2020-12-15 | 2021-04-30 | 聂建辉 | 一种垃圾处理机及处理方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004051483A1 (de) * | 2004-10-22 | 2006-04-27 | Herrle, Richard | Presswerkzeug |
DE102009032113B4 (de) * | 2009-07-08 | 2011-06-01 | Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg | Presswerkzeug sowie Verfahren zum Verpressen von insbesondere rohrförmigen Werkstücken |
DE202009009456U1 (de) * | 2009-07-15 | 2010-11-25 | Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kommanditgesellschaft | Presswerkzeug zum Verbinden von insbesondere rohrförmigen Werkstücken |
-
2015
- 2015-10-01 EP EP15783970.5A patent/EP3209440B1/de active Active
- 2015-10-01 WO PCT/EP2015/072670 patent/WO2016062515A1/de active Application Filing
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2016062515A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP3209440B1 (de) | 2021-06-02 |
WO2016062515A1 (de) | 2016-04-28 |
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