EP3427897B1 - Device for processing tubes and other round objects - Google Patents

Device for processing tubes and other round objects Download PDF

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Publication number
EP3427897B1
EP3427897B1 EP18191204.9A EP18191204A EP3427897B1 EP 3427897 B1 EP3427897 B1 EP 3427897B1 EP 18191204 A EP18191204 A EP 18191204A EP 3427897 B1 EP3427897 B1 EP 3427897B1
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EP
European Patent Office
Prior art keywords
handle
roller body
eccentric shaft
rolling element
element holder
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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.)
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EP18191204.9A
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German (de)
French (fr)
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EP3427897A1 (en
Inventor
Daniel Knipping
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Ke Kelit GmbH
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Ke Kelit GmbH
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Publication of EP3427897A1 publication Critical patent/EP3427897A1/en
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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
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling
    • 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

Definitions

  • the invention relates to a device for processing round bodies, in particular for pressing round bodies such as pipes or support sleeves with which pipes and / or fittings are to be connected.
  • Such a device is for example off U.S. 5,291,769 A known.
  • a device for rotational work processes which can also be used in particular for pressing round bodies.
  • the device contains a handle and a rolling element holder which is mounted in the handle so that it can rotate in one direction. With such a device, grooves can be pressed into a pipe connection by means of roller bodies which can be adjusted radially inward.
  • a hand tool for chopping nuts and the like which contains a manually rotatable cylindrical grating drum with outwardly pointing grating tips.
  • the friction drum is rotatably mounted in a first half-shell which is arranged at the first end of a handle.
  • the other end of the handle is pivotally connected to one end of a bracket, the other end of which has a cylindrically curved pressure surface with which grinding material can be pressed onto the grating drum.
  • a device for pressing metal sleeves onto hoses in which radially displaceably mounted jaw bodies bring about the desired pressing through radial inward movement.
  • the radial inward movement of the jaw bodies is generated by the rotation of ring plates which surround the jaw bodies in a ring shape and have pressure surfaces on their inner contour which run obliquely in the circumferential direction, with which they press the jaw bodies radially inward.
  • a round body located in the press chamber and extending along the working axis can be machined circumferentially by rotating the rolling element pressing on it around the round body.
  • the eccentric shaft has a contour which is non-circular or non-concentric with respect to its axis of rotation, on which the carrier of the rolling element is connected at least one scanning point is applied, the scanning point of the carrier is moved according to the scanned contour when the eccentric shaft is rotated. Due to the scanning of the rotatable eccentric shaft by the pivotable carrier, a virtually arbitrary "program" for the radial adjustment of the rolling element mounted on the carrier can be implemented in a simple and robust manner. It can thus be ensured that the rolling element guided around a round body is gradually adjusted radially inward according to the progress of the pressing. The progress of the adjustment program can be controlled in a simple manner by rotating the eccentric shaft.
  • the devices can optionally contain a locking mechanism, by means of which the rotation of the rolling element holder relative to the handle can be locked in one direction.
  • a locking mechanism by means of which the rotation of the rolling element holder relative to the handle can be locked in one direction.
  • the rolling element holder can be rotated a round body by a reciprocating movement of the handle in one direction around the pressing chamber.
  • the handle can have a drive shaft to which a manual or mechanical rotary drive can be attached, a rotation of the drive shaft causing a rotation of the rolling element holder relative to the handle about the working axis.
  • the drive shaft can be designed, for example, as a pin with a round or polygonal cross-section, which fits into the drill chuck of a drill or a cordless screwdriver, so that the drive shaft can be rotated by machine.
  • a wrench for example a ratchet wrench, can optionally be attached to such a (polygonal) shaft in order to turn the drive shaft manually.
  • the rotation of the drive shaft can be converted into a rotation of the rolling element holder relative to the handle, for example via gear wheels.
  • the rolling element can also be or contain a cutting knife. Then z. B. pipes are cut with the device.
  • the carrier for the rolling element designed as a lever can in particular be a one-armed or two-armed lever, at one end of which the rolling element is mounted.
  • the opposite end of the lever scans the eccentric shaft.
  • the rolling element holder contains two or more rolling elements which scan different contours of the eccentric shaft.
  • Each of the processing bodies is thus adjusted radially according to its own program, the programs of the multiple rolling bodies preferably being coordinated with one another.
  • the first can be adjusted radially inward up to a maximum value, then the second, and finally the third.
  • an active processing e.g. a pressing
  • each processing body is preferably arranged axially spaced apart with respect to the working axis.
  • each processing body thus acts on a different circumferential line.
  • the eccentric shaft rotates step by step, namely with a rotational thrust each at certain angular positions of the rolling element holder relative to the handle.
  • a rotational thrust be triggered by a certain (small) angle of rotation after each full 360 ° rotation of the rolling element holder in the handle.
  • a gear can be provided on the eccentric shaft, in which a movable pawl of the rolling element holder engages.
  • a ratchet mechanism can be realized which allows the rotation of the eccentric shaft only in one direction.
  • the pawl can also be used to generate an active (step-by-step) rotation of the eccentric shaft by pressing the pawl in the blocking direction and thereby taking the eccentric shaft with it. After completion of such a rotational thrust, the pawl can then move back into the starting position without taking the eccentric shaft with it.
  • the rolling element holder For the machining of a round body, this must be brought into the pressing space of the rolling element holder. If the rolling element holder surrounds the pressing chamber in a closed ring shape, the round body can only be introduced into the pressing chamber from the side. This is unfavorable or even impossible with long pipes.
  • the rolling element holder In order to be able to insert the round bodies (tubes) into the pressing chamber of the rolling element holder in such cases as well, the latter is preferably made up of at least two components, which can be separated to insert the round body into the pressing chamber and then closed in a ring around the round body.
  • the rolling element holder can consist of two partial circles which together form a ring and which are articulated to one another at one end so that they can be transferred into an open position and a closed position.
  • the handle can have bearing means for a positive engagement on the workpiece.
  • the handle can have wrench surfaces which engage an external hexagon shape of the workpiece in order to fix it in a rotationally fixed manner relative to the handle.
  • the device consists essentially of two components, namely a handle 100 as well as a separable rolling element holder 200.
  • the rolling element holder 200 is used to accommodate a round body (not shown) to be machined in a pressing chamber P, the rolling element holder then being rotated about a working axis A, which leads through the pressing chamber P, can process the round body from all sides.
  • the processing consists in particular in that rolling bodies 204 in the form of pressure rollers press on the round body and thus for example press circumferential grooves into it.
  • three rolling elements 204 are provided, which are arranged offset in the direction of the working axis A and which can each rotate about an axis parallel to the working axis A.
  • the aforementioned pressure rollers are only one example of the general case of "rolling elements" with which a workpiece can be machined under the application of pressure.
  • Another example of a rolling element 204 is a (eg, disk-shaped) cutting knife with which a pipe or the like can be cut. The following statements therefore also apply analogously to other rolling elements 204.
  • said rolling element holder 200 is stored in the handle 100.
  • the inclusion of the rolling element holder 200 in the handle 100 is gradual in the Fig. 1 , 2 and 3 illustrated.
  • the handle 100 is in an open state in which a tensioning lever 108 is issued from a handle 113. Since the tensioning lever 108 and the handle 113 are rotatably connected via a bearing pin 114, components of the handle 100 fastened to the opposite ends can be moved apart like pliers in this way.
  • These components include, in particular, a first bearing shell in the form of a key washer 102 and a mirror-inverted, opposite second bearing shell in the form of a guide disk 110 State of handle 100 and rolling element holder 200 ( Fig.
  • the rolling element holder 200 lies positively with a side plate 202 in the key washer 102.
  • the guide disk 110 engages with an inner collar in the opening of a gear wheel 207, 208 on the rolling element holder.
  • Key disk 102 and guide disk 110 are axially joined together by closing the "pliers" made up of handle 113 and tensioning lever 108, so that they firmly enclose the rolling element holder 200 between them (except for rotational mobility).
  • the guide washer 110 and / or the key washer 102 can optionally be shaped and dimensioned in such a way that they attach positively to the corresponding key surfaces of the round body to be machined (pipe, press sleeve, etc.) and thus prevent it from rotating (together with the roller body holder 200). can fix. Additionally or alternatively, an axial fixation on the round body can also take place in this way.
  • the handle 100 has a drive shaft 111 which protrudes laterally from a support bearing plate 104.
  • the drive shaft 111 has a polygonal cross section, on which, for example, a polygonal wrench or ratchet wrench can be attached for manually turning the drive shaft.
  • the drill chuck of a machine such as a drill or a cordless screwdriver, can also be attached in order to be able to rotate the shaft 111 by machine relative to the handle 100.
  • a (small) gearwheel 116 is attached to the shaft 111 in the axially inner region, which engages in the gearwheel 207, 208 of the roller-body bracket when the handle 100 and roller-body holder 200 are joined.
  • a rotation of the drive shaft 111 thus leads to a rotation of the rolling element holder 200 about the working axis A. It is thus possible in a simple manner to carry out a roll pressing with the device according to the invention using standard tools (cordless screwdriver, drill). Should a mechanical rotary drive is not available or cannot be used for other reasons, the pressing can optionally also be carried out manually by applying a corresponding tool wrench to the drive shaft 111 and moving it by hand.
  • a locking mechanism between the handle 100 and the rolling element holder 200 which allows the tool body holder 200 to rotate in only one direction of rotation.
  • a rotation of the rolling element holder around a round body could also be generated by an oscillating back and forth movement of the handle (cf. DE 103 42 172 A1 ).
  • a locking disk 210 is provided at each end of the eccentric shaft 209.
  • Pawls 216 engage in the teeth of these locking disks 210, which are attached to a tensioning lever 206 or a counter holder 212 ( Fig. 6 ) are stored.
  • the pawls ensure that the eccentric shaft 209 can only rotate in one direction of rotation.
  • an active rotational thrust of the eccentric shaft 209 can be generated in that the pawl 216 engaging in the locking disk 210 takes the eccentric shaft 209 with it.
  • the radial adjustment of the rolling elements 204 can be easily adapted to different types of tubes to be pressed by inserting a tube-specific eccentric shaft 209 into the rolling element holder 200.
  • the rolling element holder 200 is shown closed in a ring shape. In this state, it can only be slipped over a pipe (not shown) from the front. If this is not possible, the rolling element holder 200 can also be opened up in order to open it from the side Tube to be put on. After it has been placed, the rolling element holder can then be closed around the tube.
  • To unfold the gear on the side of the rolling element holder for example, is made in two parts from a C-shaped segment 207 and a shorter folding segment 208, which parts can be unfolded if necessary.
  • a pivotable bracket 213 can be seen which, in the closed state, connects the pressure shell 201 and the folding segment 208 of the gearwheel to the rest of the rolling element holder. By disengaging this clamp, the parts mentioned can then be rotated around an axis X ( Fig. 5 ) are pivoted, whereby the ring of the rolling element holder opens.
  • FIG. 8 shows a one-sided support sleeve S (compression sleeve) before an associated plastic pipe R is plugged onto the support sleeve provided with annular gaps for this purpose.
  • the state after the insertion of the plastic pipe R and after the pressing of the support sleeve S and plastic pipe R with the device according to the invention is shown in FIG Fig. 9 shown.
  • Three compression grooves V, which were produced by the rolling elements 204, are clearly visible.
  • any other workpieces / fittings can also be processed or pressed with the device, in particular double nipples to which a pipe can be connected on both sides (mirror-symmetrically).
  • the radial (circumferential) and the axial position of the handle on the workpiece fixed.
  • a form-fitting engagement can take place on an out-of-round outer contour of the workpiece (in particular on key surfaces) or on radially protruding collars of the workpiece.
  • FIG. 10 shows a side prepared for pressing on the left and a still free side of a two-sided support sleeve S 'on the right.
  • the figures also show a handle 100 of the type described above, in which essentially only the key disc 102 'is different from the previous embodiments.
  • the key washer 102 ′ is provided with key surfaces with which it can engage the external hexagon AS of the compression sleeve H in order to mount the sleeve in a rotationally fixed manner relative to the handle 100. In this way, the compression sleeve H cannot rotate during the pressing process.
  • Fig. 10 As Fig. 10 can also be seen, the guide disk 110 'of the handle 100 is mounted in a receptacle N of the workpiece to be pressed with lateral stops in order to fix it in the axial direction.
  • a separate perspective view of the compression sleeve H with the external hexagon AS is shown in Fig. 12 shown.
  • Fig. 13 shows a side view (right partially in section) and Fig. 14 a perspective of the two-sided support sleeve S 'of Fig. 10 and 11 .
  • the support sleeve S ' Symmetrical to the central receptacle N, the support sleeve S 'has two extensions with circumferential sealing teeth on the outer surface, which dig into a pipe when being pressed.
  • an anti-rotation device can optionally be provided, which prevents rotation between the support sleeve S 'and an attached pipe (during pressing and also later in continuous use with flowing media in the load change of hot / cold liquids and pressure surges in the line system).
  • the anti-rotation device can consist, for example, of knurling (not shown), which is preferably located in the area marked "X" near the receptacle N on the outer surface of the support sleeve S 'and / or is attached to the sealing teeth (e.g. implemented by approx. 1 mm deep and approx. 1 mm wide grooves).
  • the key washers 102, 102 'and the guide washers 110, 110' and optionally also the side plate 101 and the support bearing 104 can be exchanged or easily remounted in order to be able to process different pipe and workpiece diameters.
  • a set of these elements can advantageously be used for a range of pipe diameters (for example from 20-40 mm, 50-110 mm).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Bearbeiten von Rundkörpern, insbesondere zum Verpressen von Rundkörpern wie beispielsweise von Rohren bzw. von Stützhülsen, mit denen Rohre und/oder Armaturen verbunden werden sollen.The invention relates to a device for processing round bodies, in particular for pressing round bodies such as pipes or support sleeves with which pipes and / or fittings are to be connected.

Eine solche Vorrichtung ist beispielsweise aus US 5 291 769 A bekannt.Such a device is for example off U.S. 5,291,769 A known.

Aus der DE 103 42 172 A1 ist eine Vorrichtung für Rotationsarbeitsvorgänge bekannt, die insbesondere auch zum Verpressen von Rundkörpern verwendet werden kann. Die Vorrichtung enthält eine Handhabe und eine Wälzkörperhalterung, welche in der Handhabe drehbeweglich in eine Richtung gelagert ist. Über radial einwärts verstellbare Wälzkörper können mit einer derartigen Vorrichtung Nuten in eine Rohrverbindung eingepresst werden.From the DE 103 42 172 A1 a device for rotational work processes is known, which can also be used in particular for pressing round bodies. The device contains a handle and a rolling element holder which is mounted in the handle so that it can rotate in one direction. With such a device, grooves can be pressed into a pipe connection by means of roller bodies which can be adjusted radially inward.

Aus der EP 1 712 316 A1 , der US 4 769 911 , der US 5 528 919 und der US 2010/166516 A1 sind Vorrichtungen für Rotationsarbeitsvorgänge bekannt, bei denen eine Wälzkörperhalterung in einer Handhabe drehbeweglich gelagert ist und die Drehung beispielsweise über ein angekoppeltes Elektrowerkzeug erfolgt.From the EP 1 712 316 A1 , the U.S. 4,769,911 , the U.S. 5,528,919 and the US 2010/166516 A1 Devices for rotational work processes are known in which a rolling element holder is rotatably mounted in a handle and the rotation takes place, for example, via a coupled power tool.

Aus der US 2 587 186 ist ein Handwerkzeug zum Zerkleinern von Nüssen und dergleichen bekannt, welches eine von Hand drehbare zylindrische Reibtrommel mit nach außen weisenden Reibspitzen enthält. Die Reibtrommel wird drehbar in einer ersten Halbschale gelagert, welche am ersten Ende eines Handgriffes angeordnet ist. Das andere Ende des Handgriffes ist schwenkbeweglich mit einem Ende eines Bügels verbundenen, dessen anderes Ende eine zylindrisch gebogene Druckfläche aufweist, mit welcher Mahlgut auf die Reibtrommel gedrückt werden kann.From the U.S. 2,587,186 a hand tool for chopping nuts and the like is known which contains a manually rotatable cylindrical grating drum with outwardly pointing grating tips. The friction drum is rotatably mounted in a first half-shell which is arranged at the first end of a handle. The other end of the handle is pivotally connected to one end of a bracket, the other end of which has a cylindrically curved pressure surface with which grinding material can be pressed onto the grating drum.

Aus der DE 25 11 942 B1 ist eine Vorrichtung zum Aufpressen von Metallhülsen auf Schläuche bekannt, bei welcher radial verschiebebeweglich gelagerte Backenkörper durch radiale Einwärtsbewegung die gewünschte Verpressung bewirken. Die radiale Einwärtsbewegung der Backenkörper wird erzeugt durch eine Drehung von Ringplatten, die die Backenkörper ringförmig umgeben und an ihrer Innenkontur in Umfangsrichtung schräg verlaufende Druckflächen aufweisen, mit denen sie die Backenkörper radial einwärts pressen.From the DE 25 11 942 B1 a device for pressing metal sleeves onto hoses is known, in which radially displaceably mounted jaw bodies bring about the desired pressing through radial inward movement. The radial inward movement of the jaw bodies is generated by the rotation of ring plates which surround the jaw bodies in a ring shape and have pressure surfaces on their inner contour which run obliquely in the circumferential direction, with which they press the jaw bodies radially inward.

Vor diesem Hintergrund war es Aufgabe der vorliegenden Erfindung, Verbesserungen für eine Vorrichtung der eingangs beschriebenen Art bereitzustellen.Against this background, it was the object of the present invention to provide improvements for a device of the type described above.

Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen enthalten.This object is achieved by a device with the features of claim 1. Advantageous refinements are contained in the subclaims.

Durch Drehung der Wälzkörperhalterung relativ zur Handhabe um die Arbeitsachse kann ein im Pressraum befindlicher, sich entlang der Arbeitsachse erstreckender Rundkörper umfänglich bearbeitet werden, indem der auf ihn drückende Wälzkörper um den Rundkörper rotiert.By rotating the rolling element holder relative to the handle around the working axis, a round body located in the press chamber and extending along the working axis can be machined circumferentially by rotating the rolling element pressing on it around the round body.

Da die Exzenterwelle eine bezüglich ihrer Drehachse unrunde bzw. nichtkonzentrische Kontur aufweist, an welcher der Träger des Wälzkörpers mit mindestens einem Abtastpunkt anliegt, wird bei einer Drehung der Exzenterwelle der Abtastpunkt des Trägers entsprechend der abgetasteten Kontur bewegt. Aufgrund der Abtastung der drehbeweglichen Exzenterwelle durch den schwenkbeweglichen Träger lässt sich somit auf einfache und robuste Art ein quasi beliebiges "Programm" der radialen Verstellung des am Träger gelagerten Wälzkörpers realisieren. So kann gewährleistet werden, dass der um einen Rundkörper herumgeführte Wälzkörper nach und nach entsprechend dem Fortschritt der Verpressung radial einwärts verstellt wird. Das Fortschreiten des Verstellprogramms kann dabei in einfacher Weise durch die Drehung der Exzenterwelle kontrolliert werden.Since the eccentric shaft has a contour which is non-circular or non-concentric with respect to its axis of rotation, on which the carrier of the rolling element is connected at least one scanning point is applied, the scanning point of the carrier is moved according to the scanned contour when the eccentric shaft is rotated. Due to the scanning of the rotatable eccentric shaft by the pivotable carrier, a virtually arbitrary "program" for the radial adjustment of the rolling element mounted on the carrier can be implemented in a simple and robust manner. It can thus be ensured that the rolling element guided around a round body is gradually adjusted radially inward according to the progress of the pressing. The progress of the adjustment program can be controlled in a simple manner by rotating the eccentric shaft.

Gemäß einer Weiterbildung der Erfindung kann die Vorrichtungen optional einen Sperrmechanismus enthalten, durch welchen die Drehung der Wälzkörperhalterung relativ zur Handhabe in einer Richtung gesperrt werden kann. Auf diese Weise kann erreicht werden, dass die Wälzkörperhalterung durch eine hin und her oszillierende Bewegung der Handhabe in einer Richtung um den Pressraum einen Rundkörper gedreht werden kann. Weitere Erläuterungen zu einem solchen Mechanismus sind in der DE 103 42 172 A1 zu finden.According to a development of the invention, the devices can optionally contain a locking mechanism, by means of which the rotation of the rolling element holder relative to the handle can be locked in one direction. In this way it can be achieved that the rolling element holder can be rotated a round body by a reciprocating movement of the handle in one direction around the pressing chamber. Further explanations of such a mechanism can be found in DE 103 42 172 A1 to find.

Die Handhabe kann eine Antriebswelle aufweisen, an welche ein manueller oder maschineller Drehantrieb angesetzt werden kann, wobei eine Drehung der Antriebswelle eine Drehung der Wälzkörperhalterung relativ zur Handhabe um die Arbeitsachse bewirkt. Die Antriebswelle kann beispielsweise als ein Stift mit rundem oder polygonalem Querschnitt ausgebildet sein, welcher in das Bohrfutter einer Bohrmaschine oder eines Akkuschraubers passt, so dass die Antriebswelle maschinell gedreht werden kann. Des Weiteren kann an eine solche (polygonale) Welle optional auch ein Schraubenschlüssel angesetzt werden, beispielsweise ein Ratschenschlüssel, um die Antriebswelle manuell zu drehen. Die Drehung der Antriebswelle kann beispielsweise über Zahnräder in eine Drehung der Wälzkörperhalterung relativ zur Handhabe umgesetzt werden.The handle can have a drive shaft to which a manual or mechanical rotary drive can be attached, a rotation of the drive shaft causing a rotation of the rolling element holder relative to the handle about the working axis. The drive shaft can be designed, for example, as a pin with a round or polygonal cross-section, which fits into the drill chuck of a drill or a cordless screwdriver, so that the drive shaft can be rotated by machine. Furthermore, a wrench, for example a ratchet wrench, can optionally be attached to such a (polygonal) shaft in order to turn the drive shaft manually. The rotation of the drive shaft can be converted into a rotation of the rolling element holder relative to the handle, for example via gear wheels.

Gemäß einer Anwendung kann der Wälzkörper auch ein Schneidmesser sein oder ein solches enthalten. Dann können z. B. Rohre mit der Vorrichtung abgeschnitten werden.According to one application, the rolling element can also be or contain a cutting knife. Then z. B. pipes are cut with the device.

Bei dem als Hebel ausgebildeten Träger für den Wälzkörper kann es sich insbesondere um einen einarmigen oder zweiarmigen Hebel handeln, an dessen einem Ende der Wälzkörper gelagert ist. Das gegenüberliegende Ende des Hebels nimmt die Abtastung der Exzenterwelle vor. Mit Hilfe des Hebels gelingt es, sehr große Druckkräfte an den Wälzkörpern zu erzeugen.The carrier for the rolling element designed as a lever can in particular be a one-armed or two-armed lever, at one end of which the rolling element is mounted. The opposite end of the lever scans the eccentric shaft. With the help of the lever it is possible to generate very large compressive forces on the rolling elements.

Gemäß der Erfindung enthält die Wälzkörperhalterung zwei oder mehr Wälzkörper welche unterschiedliche Konturen der Exzenterwelle abtasten. Jeder der Bearbeitungskörper wird somit nach einem eigenen Programm radial verstellt, wobei die Programme der mehreren Wälzkörper vorzugsweise aufeinander abgestimmt sind. Beispielsweise kann bei drei Bearbeitungskörpern zunächst der erste bis zu einem Maximalwert radial einwärts verstellt werden, dann der zweite, und zum Schluss der dritte. Auf diese Weise wird erreicht, dass zu einem gegebenen Zeitpunkt jeweils nur einer der Bearbeitungskörper eine aktive Bearbeitung (z. B. eine Verpressung) ausführt, sodass insgesamt die zur Verpressung notwendige Kraft begrenzt bleibt.According to the invention, the rolling element holder contains two or more rolling elements which scan different contours of the eccentric shaft. Each of the processing bodies is thus adjusted radially according to its own program, the programs of the multiple rolling bodies preferably being coordinated with one another. For example, with three processing bodies, the first can be adjusted radially inward up to a maximum value, then the second, and finally the third. In this way it is achieved that at a given point in time only one of the processing bodies carries out an active processing (e.g. a pressing), so that overall the force required for pressing remains limited.

In Ausführungsformen der Erfindung, in denen zwei oder mehr Bearbeitungskörper vorhanden sind, sind diese vorzugsweise axial beabstandet in Bezug auf die Arbeitsachse angeordnet. Bei Rotation um einen Rundkörper wirkt jeder Bearbeitungskörper somit an einer anderen Umfangslinie.In embodiments of the invention in which two or more processing bodies are present, these are preferably arranged axially spaced apart with respect to the working axis. When rotating around a round body, each processing body thus acts on a different circumferential line.

Gemäß einer Weiterbildung der vorstehend beschriebenen Ausführungsform rotiert die Exzenterwelle schrittweise, nämlich mit je einem Rotationsschub bei bestimmten Winkelstellungen der Wälzkörperhalterung relativ zur Handhabe. An der Wälzkörperhalterung können beispielsweise Elemente vorgesehen sein, welche die Handhabe in den genannten Winkelstellungen berühren und dadurch für einen Rotationsschub der Exzenterwelle sorgen. Insbesondere kann ein Rotationsschub um einen bestimmten (kleinen) Drehwinkel nach jeder vollen 360°-Umdrehung der Wälzkörperhalterung in der Handhabe ausgelöst werden.According to a further development of the embodiment described above, the eccentric shaft rotates step by step, namely with a rotational thrust each at certain angular positions of the rolling element holder relative to the handle. For example, elements can be provided on the rolling element holder which touch the handle in the aforementioned angular positions and thereby ensure a rotational thrust of the eccentric shaft. In particular, a rotational thrust be triggered by a certain (small) angle of rotation after each full 360 ° rotation of the rolling element holder in the handle.

Für die konkrete Ausgestaltung der oben beschriebenen Mechanismen an der Exzenterwelle gibt es verschiedene Möglichkeiten. Insbesondere kann an der Exzenterwelle ein Zahnrad vorgesehen sein, in welches eine bewegliche Klinke der Wälzkörperhalterung eingreift. Durch eine solche Klinke und eine entsprechende Formgebung des Zahnrades kann zum einen ein Ratschenmechanismus realisiert werden, welcher die Drehung der Exzenterwelle nur in einer Richtung erlaubt. Des Weiteren kann mittels der Klinke auch eine aktive (schrittweise) Drehung der Exzenterwelle erzeugt werden, indem die Klinke in Sperrrichtung gedrückt wird und dabei die Exzenterwelle mitnimmt. Nach Abschluss eines solchen Rotationsschubes kann die Klinke dann wieder in die Ausgangsstellung zurückfahren, ohne die Exzenterwelle mitzunehmen.There are various possibilities for the specific design of the mechanisms described above on the eccentric shaft. In particular, a gear can be provided on the eccentric shaft, in which a movable pawl of the rolling element holder engages. By means of such a pawl and a corresponding shape of the gearwheel, on the one hand, a ratchet mechanism can be realized which allows the rotation of the eccentric shaft only in one direction. Furthermore, the pawl can also be used to generate an active (step-by-step) rotation of the eccentric shaft by pressing the pawl in the blocking direction and thereby taking the eccentric shaft with it. After completion of such a rotational thrust, the pawl can then move back into the starting position without taking the eccentric shaft with it.

Für die Bearbeitung eines Rundkörpers ist dieser in den Pressraum der Wälzkörperhalterung einzubringen. Wenn die Wälzkörperhalterung den Pressraum ringförmig geschlossen umgibt, kann der Rundkörper nur von der Seite her in den Pressraum eingeführt werden. Dies ist bei langen Rohren ungünstig oder sogar unmöglich. Um auch in solchen Fällen die Rundkörper (Rohre) in den Pressraum der Wälzkörperhalterung einführen zu können, ist letztere vorzugsweise aus mindestens zwei Komponenten aufgebaut, welche zum Einführen des Rundkörpers in den Pressraum getrennt und dann ringförmig um den Rundkörper geschlossen werden können. Beispielsweise kann die Wälzkörperhalterung aus zwei Teilkreisen bestehen, die zusammen einen Ring ergeben und die an einem Ende gelenkig miteinander verbunden sind, so dass sie in eine Öffnungsposition und eine geschlossene Position überführt werden können.For the machining of a round body, this must be brought into the pressing space of the rolling element holder. If the rolling element holder surrounds the pressing chamber in a closed ring shape, the round body can only be introduced into the pressing chamber from the side. This is unfavorable or even impossible with long pipes. In order to be able to insert the round bodies (tubes) into the pressing chamber of the rolling element holder in such cases as well, the latter is preferably made up of at least two components, which can be separated to insert the round body into the pressing chamber and then closed in a ring around the round body. For example, the rolling element holder can consist of two partial circles which together form a ring and which are articulated to one another at one end so that they can be transferred into an open position and a closed position.

Gemäß einer Weiterbildung der Erfindung kann die Handhabe Lagerungsmittel für einen formschlüssigen Angriff am Werkstück aufweisen. Beispielsweise kann die Handhabe Schlüsselflächen haben, welche an einer Außensechskantform des Werkstückes angreifen, um dieses relativ zur Handhabe drehfest zu fixieren.According to a development of the invention, the handle can have bearing means for a positive engagement on the workpiece. For example, the handle can have wrench surfaces which engage an external hexagon shape of the workpiece in order to fix it in a rotationally fixed manner relative to the handle.

In der Zeichnung wird die Erfindung beispielhaft näher erläutert. Dabei zeigen:

Fig. 1
eine erfindungsgemäße Vorrichtung zum Verpressen von Rundkörpern im geöffnetem Zustand der Handhabe vor Aufnahme einer Wälzkörperhalterung, welche bereits um eine Arbeitsachse geschlossen ist, wobei Seitenteile der Handhabe zur besseren Erkennbarkeit abgerückt sind,
Fig. 2
die Vorrichtung von Fig. 1 im zusammengebauten Zustand der Handhabe,
Fig. 3
die Vorrichtung von Fig. 1 bei Eingriff der Wälzkörperhalterung in die Handhabe, wobei Seitenteile der Handhabe wiederum zur besseren Erkennbarkeit abgerückt dargestellt sind,
Fig. 4
eine separate perspektivische Ansicht der Wälzkörperhalterung mit abgerücktem Seitenteil aus einer ersten Ansichtsrichtung,
Fig. 5
die Wälzkörperhalterung von Fig. 4 aus einer zweiten Ansichtsrichtung,
Fig. 6
eine perspektivische Explosionsansicht der Wälzkörperhalterung,
Fig. 7
eine perspektivische Explosionsansicht der Handhabe,
Fig. 8
eine Stützhülse vor Einsetzen eines Kunststoffrohres,
Fig. 9
die Stützhülse von Fig. 8 nach Einsetzen und Verpressen des Kunststoffrohres,
Fig. 10
die erfindungsgemäße Handhabe mit Schlüsselflächen für den Angriff an einer Presshülse, wobei zur besseren Erkennbarkeit die Wälzkörperhalterung weggelassen und ein Seitenteil abgedrückt dargestellt ist,
Fig. 11
die Handhabe von Fig. 10 mit den Seitenteilen in Arbeitsstellung,
Fig. 12
eine perspektivische Ansicht der in den Fig. 10 und 11 verwendeten Presshülse,
Fig. 13
eine Schnittansicht der in den Fig. 10 und 11 verwendeten zweiseitigen Stützhülse und
Fig. 14
eine perspektivische Ansicht der in den Fig. 10 und 11 verwendeten zweiseitigen Stützhülse.
The invention is explained in more detail by way of example in the drawing. Show:
Fig. 1
a device according to the invention for pressing round bodies in the open state of the handle before receiving a rolling element holder, which is already closed about a working axis, with side parts of the handle being moved away for better visibility,
Fig. 2
the device of Fig. 1 in the assembled state of the handle,
Fig. 3
the device of Fig. 1 when the rolling element holder engages in the handle, the side parts of the handle again being shown removed for better visibility,
Fig. 4
a separate perspective view of the rolling element holder with the side part removed from a first viewing direction,
Fig. 5
the rolling element holder of Fig. 4 from a second viewing direction,
Fig. 6
an exploded perspective view of the rolling element holder,
Fig. 7
an exploded perspective view of the handle,
Fig. 8
a support sleeve before inserting a plastic pipe,
Fig. 9
the support sleeve of Fig. 8 after inserting and pressing the plastic pipe,
Fig. 10
the handle according to the invention with wrench surfaces for attacking a compression sleeve, the rolling element holder being omitted and a side part being shown pressed off for better visibility,
Fig. 11
the handling of Fig. 10 with the side parts in working position,
Fig. 12
a perspective view of the FIGS Fig. 10 and 11 used compression sleeve,
Fig. 13
a sectional view of the in Fig. 10 and 11 used two-sided support sleeve and
Fig. 14
a perspective view of the FIGS Fig. 10 and 11 used two-sided support sleeve.

Mit Hilfe der Fig. 1 bis 7 soll eine erfindungsgemäße Vorrichtung zum Verpressen von Rundkörpern, beispielsweise von Rohren, näher erläutert werden. Wie in Fig. 1 erkennbar ist, besteht die Vorrichtung im Wesentlichen aus zwei Komponenten, nämlich einer Handhabe 100 sowie einer davon trennbar ausgebildeten Wälzkörperhalterung 200. Die Wälzkörperhalterung 200 dient dazu, einen zu bearbeitenden Rundkörper (nicht dargestellt) in einem Pressraum P aufzunehmen, wobei die Wälzkörperhalterung anschließend durch Rotation um eine Arbeitsachse A, die durch den Pressraum P führt, den Rundkörper von allen Seiten bearbeiten kann. Das Bearbeiten besteht dabei insbesondere darin, dass Wälzkörper 204 in Form von Druckrollen auf den Rundkörper drücken und so beispielsweise umlaufende Rillen in diesen einpressen. Im dargestellten Ausführungsbeispiel sind drei Wälzkörper 204 vorgesehen, welche in Richtung der Arbeitsachse A versetzt angeordnet sind und die sich jeweils um eine zur Arbeitsachse A parallele Achse drehen können.With the help of Figs. 1 to 7 a device according to the invention for pressing round bodies, for example pipes, is to be explained in more detail. As in Fig. 1 can be seen, the device consists essentially of two components, namely a handle 100 as well as a separable rolling element holder 200. The rolling element holder 200 is used to accommodate a round body (not shown) to be machined in a pressing chamber P, the rolling element holder then being rotated about a working axis A, which leads through the pressing chamber P, can process the round body from all sides. The processing consists in particular in that rolling bodies 204 in the form of pressure rollers press on the round body and thus for example press circumferential grooves into it. In the illustrated embodiment, three rolling elements 204 are provided, which are arranged offset in the direction of the working axis A and which can each rotate about an axis parallel to the working axis A.

Die vorgenannten Druckrollen sind nur ein Beispiel für den allgemeinen Fall von "Wälzkörpern", mit denen ein Werkstück unter Druckausübung bearbeitet werden kann. Ein anders Beispiel für einen Wälzkörper 204 ist ein (z. B. scheibenförmiges) Schneidmesser, mit dem ein Rohr oder dergleichen abgeschnitten werden kann. Die nachfolgenden Ausführungen gelten somit analog auch für andere Wälzkörper 204. Weiterhin ist es möglich, dass verschiedene Arten von Wälzkörpern austauschbar montiert sind, sodass die Vorrichtung für verschiedene Anwendungen leicht umgerüstet werden kann.The aforementioned pressure rollers are only one example of the general case of "rolling elements" with which a workpiece can be machined under the application of pressure. Another example of a rolling element 204 is a (eg, disk-shaped) cutting knife with which a pipe or the like can be cut. The following statements therefore also apply analogously to other rolling elements 204. Furthermore, it is possible for different types of rolling elements to be mounted interchangeably, so that the device can easily be converted for different applications.

Während eines Bearbeitungsvorganges wird die genannte Wälzkörperhalterung 200 in der Handhabe 100 gelagert. Die Aufnahme der Wälzkörperhalterung 200 in die Handhabe 100 ist dabei schrittweise in den Fig. 1, 2 und 3 veranschaulicht. In den Fig. 1 und 2 befindet sich die Handhabe 100 in einem geöffneten Zustand, in welcher ein Spannhebel 108 aus einem Handgriff 113 ausgestellt ist. Da der Spannhebel 108 und der Griff 113 über einen Lagerbolzen 114 drehbeweglich verbunden sind, können auf diese Weise an den gegenüberliegenden Enden befestigte Komponenten der Handhabe 100 zangenartig auseinander bewegt werden. Diese Komponenten umfassen insbesondere eine erste Lagerschale in Form einer Schlüsselscheibe 102 sowie eine spiegelbildlich gegenüberliegende zweite Lagerschale in Form einer Führungsscheibe 110. Im zusammengefügten Zustand von Handhabe 100 und Wälzkörperhalterung 200 (Fig. 3) liegt die Wälzkörperhalterung 200 mit einer Seitenplatte 202 formschlüssig in der Schlüsselscheibe 102. Auf der gegenüberliegenden Seite greift die Führungsscheibe 110 mit einem Innenkragen in die Öffnung eines Zahnrades 207, 208 an der Wälzkörperhalterung ein. Schlüsselscheibe 102 und Führungsscheibe 110 sind dabei durch Schließen der "Zange" aus Griff 113 und Spannhebel 108 axial zusammengefügt worden, sodass sie die Wälzkörperhalterung 200 fest (bis auf eine Drehbeweglichkeit) zwischen sich einschließen.During a machining process, said rolling element holder 200 is stored in the handle 100. The inclusion of the rolling element holder 200 in the handle 100 is gradual in the Fig. 1 , 2 and 3 illustrated. In the Fig. 1 and 2 the handle 100 is in an open state in which a tensioning lever 108 is issued from a handle 113. Since the tensioning lever 108 and the handle 113 are rotatably connected via a bearing pin 114, components of the handle 100 fastened to the opposite ends can be moved apart like pliers in this way. These components include, in particular, a first bearing shell in the form of a key washer 102 and a mirror-inverted, opposite second bearing shell in the form of a guide disk 110 State of handle 100 and rolling element holder 200 ( Fig. 3 ) the rolling element holder 200 lies positively with a side plate 202 in the key washer 102. On the opposite side, the guide disk 110 engages with an inner collar in the opening of a gear wheel 207, 208 on the rolling element holder. Key disk 102 and guide disk 110 are axially joined together by closing the "pliers" made up of handle 113 and tensioning lever 108, so that they firmly enclose the rolling element holder 200 between them (except for rotational mobility).

Des Weiteren können die Führungsscheibe 110 und/oder die Schlüsselscheibe 102 optional so geformt und dimensioniert sein, dass sie an entsprechende Schlüsselflächen des zu bearbeitenden Rundkörpers (Rohr, Pressmuffe etc.) formschlüssig ansetzen und dieses somit gegen eine Rotation (zusammen mit der Wälzkörperhalterung 200) fixieren können. Zusätzlich oder alternativ kann auch eine axiale Fixierung auf dem Rundkörper auf diese Weise erfolgen.Furthermore, the guide washer 110 and / or the key washer 102 can optionally be shaped and dimensioned in such a way that they attach positively to the corresponding key surfaces of the round body to be machined (pipe, press sleeve, etc.) and thus prevent it from rotating (together with the roller body holder 200). can fix. Additionally or alternatively, an axial fixation on the round body can also take place in this way.

Wie beispielsweise aus Fig. 2 erkennbar ist, weist die Handhabe 100 eine Antriebswelle 111 auf, welche seitlich aus einer Stützlagerplatte 104 herausragt. Die Antriebswelle 111 hat an ihrem Ende einen polygonalen Querschnitt, an welchem beispielsweise ein Mehrkantschlüssel oder Ratschenschlüssel für ein manuelles Drehen der Antriebswelle angesetzt werden kann. Insbesondere kann jedoch auch das Bohrfutter einer Maschine, wie beispielsweise eines Bohrers oder eines Akkuschraubers, angesetzt werden, um die Welle 111 maschinell relativ zur Handhabe 100 drehen zu können.Such as from Fig. 2 As can be seen, the handle 100 has a drive shaft 111 which protrudes laterally from a support bearing plate 104. At its end, the drive shaft 111 has a polygonal cross section, on which, for example, a polygonal wrench or ratchet wrench can be attached for manually turning the drive shaft. In particular, however, the drill chuck of a machine, such as a drill or a cordless screwdriver, can also be attached in order to be able to rotate the shaft 111 by machine relative to the handle 100.

Wie aus Fig. 3 erkennbar ist, ist im axial inneren Bereich an der Welle 111 ein (kleines) Zahnrad 116 angebracht, welches im zusammengefügten Zustand von Handhabe 100 und Wälzkörperhalterung 200 in das Zahnrad 207, 208 der Wälzkörperhalterung eingreift. Eine Drehung der Antriebswelle 111 führt somit zu einer Drehung der Wälzkörperhalterung 200 um die Arbeitsachse A. So ist es auf einfache Weise möglich, mit Standardwerkzeugen (Akkuschrauber, Bohrmaschine) eine Rollverpressung mit der erfindungsgemäßen Vorrichtung vorzunehmen. Sollte ein maschineller Drehantrieb nicht vorhanden oder aus anderen Gründen nicht einsetzbar sein, so kann optional die Verpressung auch manuell vorgenommen werden, indem ein entsprechender Werkzeugschlüssel an der Antriebswelle 111 angesetzt und von Hand bewegt wird.How out Fig. 3 As can be seen, a (small) gearwheel 116 is attached to the shaft 111 in the axially inner region, which engages in the gearwheel 207, 208 of the roller-body bracket when the handle 100 and roller-body holder 200 are joined. A rotation of the drive shaft 111 thus leads to a rotation of the rolling element holder 200 about the working axis A. It is thus possible in a simple manner to carry out a roll pressing with the device according to the invention using standard tools (cordless screwdriver, drill). Should a mechanical rotary drive is not available or cannot be used for other reasons, the pressing can optionally also be carried out manually by applying a corresponding tool wrench to the drive shaft 111 and moving it by hand.

Des Weiteren ist es möglich, einen Sperrmechanismus zwischen der Handhabe 100 und der Wälzkörperhalterung 200 vorzusehen, welcher eine Drehung der Werkzeugkörperhalterung 200 nur in einer Drehrichtung erlaubt. Dies könnte beispielsweise erreicht werden, indem eine an der Handhabe 100 gelagerte Sperrklinke (nicht dargestellt) in die Zähne des Zahnrades 207, 208 eingreift und so eine Rotation der Wälzkörperhalterung 200 nur in einer Richtung erlaubt. Mit einem solchen Mechanismus könnte eine Drehung der Wälzkörperhalterung um einen Rundkörper auch durch eine oszillierende Hin- und Herbewegung der Handhabe erzeugt werden (vgl. DE 103 42 172 A1 ).Furthermore, it is possible to provide a locking mechanism between the handle 100 and the rolling element holder 200 which allows the tool body holder 200 to rotate in only one direction of rotation. This could be achieved, for example, in that a locking pawl (not shown) mounted on the handle 100 engages the teeth of the gear wheel 207, 208 and thus allows the rolling element holder 200 to rotate in only one direction. With such a mechanism, a rotation of the rolling element holder around a round body could also be generated by an oscillating back and forth movement of the handle (cf. DE 103 42 172 A1 ).

In den Fig. 4 und 5 sind separate Ansichten der Wälzkörperhalterung 200 wiedergegeben, wobei zur besseren Erkennbarkeit der inneren Teile die Seitenplatte 202, der Spannhebel 206, und eine Klinke 216 abgerückt dargestellt sind. Aus den Fig. 4, 5 ist insbesondere der Mechanismus für ein radiales Nachstellen der Wälzkörper 204 erkennbar. Die Wälzkörper 204 sind jeweils an einem Hebel 203 drehbeweglich gelagert, wobei die Hebel 203 ihrerseits um Lagerbolzen 205 schwenkbeweglich sind. Das den Wälzkörpern 204 gegenüberliegende Ende der Hebel 203 liegt an einer Exzenterwelle 209 an, wobei jeder der drei vorhandenen Hebel 203 eine andere Kontur dieser Exzenterwelle 209 abtastet. Durch Drehung der Exzenterwelle 209 um ihre Achse kann somit jeder der Wälzkörper 204 gemäß einem eigenen Programm radial verstellt werden.In the Figures 4 and 5 separate views of the rolling element holder 200 are shown, the side plate 202, the tensioning lever 206, and a pawl 216 being shown withdrawn for better visibility of the inner parts. From the Fig. 4, 5 the mechanism for a radial readjustment of the rolling elements 204 can be seen in particular. The rolling elements 204 are each rotatably mounted on a lever 203, the levers 203 in turn being pivotable about bearing bolts 205. The end of the lever 203 opposite the roller bodies 204 rests on an eccentric shaft 209, each of the three existing levers 203 scanning a different contour of this eccentric shaft 209. By rotating the eccentric shaft 209 about its axis, each of the rolling elements 204 can thus be adjusted radially according to its own program.

Insbesondere ist es möglich, dass zunächst nur ein erster Wälzkörper 204 radial einwärts bewegt wird, bis er eine Endposition erreicht hat. Anschließend wird ein zweiter Wälzkörper radial einwärts bewegt, bis auch er seine Endposition erreicht hat. Zum Schluss wird schließlich der letzte Wälzkörper radial einwärts bewegt, bis er seine Endposition erreicht. Bei noch weiterer Drehung des Exzenters 209 können alle abgetasteten Konturen dann zurück auf ihren Ausgangswert springen, wodurch die Wälzkörper 204 wieder in ihre radial außenliegende Ausgangsposition zurückfahren und das bearbeitete Rohr somit zur Entnahme freigeben. Die verschiedenen abgetasteten Konturen der Exzenterwelle 209 sind am besten in der Explosionsansicht von Fig. 6 erkennbar.In particular, it is possible that initially only a first roller body 204 is moved radially inward until it has reached an end position. Then a second rolling element is moved radially inwards until it has also reached its end position. Finally, the last rolling element is moved radially inwards until it reaches its end position. With a further rotation of the eccentric 209, all the scanned contours can then jump back to their starting value, whereby move the rolling elements 204 back into their radially outer starting position and thus release the machined tube for removal. The various scanned contours of the eccentric shaft 209 are best shown in the exploded view of FIG Fig. 6 recognizable.

Um die Exzenterwelle 209 im Laufe eines Pressvorganges weiterzustellen und die Wälzkörper 204 somit programmgemäß radial zu verstellen, ist an jedem Ende der Exzenterwelle 209 eine Rastscheibe 210 vorgesehen. In die Zähne dieser Rastscheiben 210 greifen jeweils Klinken 216 ein, welche an einem Spannhebel 206 bzw. einem Gegenhalter 212 (Fig. 6) gelagert sind. Die Klinken sorgen zum einen dafür, dass die Exzenterwelle 209 nur in einer Drehrichtung rotieren kann. Zum anderen kann durch ein Schwenken des Spannhebels 206 ein aktiver Rotationsschub der Exzenterwelle 209 erzeugt werden, indem die in die Rastscheibe 210 eingreifende Klinke 216 die Exzenterwelle 209 mitnimmt. Ein solcher Rotationsschub wird immer dann erzeugt, wenn die nach außen vorstehende Nase des Spannhebels 206 an der Handhabe 100 anschlägt und daher bei einer weiteren Drehung der Wälzkörperhalterung 200 geschwenkt wird, bis sie am Anschlag vorbeigeführt ist und wieder in die Ausgangsposition zurückspringen kann (vgl. Fig. 3). Nach jeder vollständigen 360°-Umdrehung der Wälzkörperhalterung 200 in der Handhabe 100 wird somit die Exzenterwelle 209 ein kurzes Stück weitergedreht und damit das radiale Verstellprogramm der Wälzkörper 204 einen Schritt vorangetrieben.In order to move the eccentric shaft 209 further in the course of a pressing process and thus to adjust the rolling elements 204 radially according to the program, a locking disk 210 is provided at each end of the eccentric shaft 209. Pawls 216 engage in the teeth of these locking disks 210, which are attached to a tensioning lever 206 or a counter holder 212 ( Fig. 6 ) are stored. On the one hand, the pawls ensure that the eccentric shaft 209 can only rotate in one direction of rotation. On the other hand, by pivoting the tensioning lever 206, an active rotational thrust of the eccentric shaft 209 can be generated in that the pawl 216 engaging in the locking disk 210 takes the eccentric shaft 209 with it. Such a rotational thrust is always generated when the outwardly protruding nose of the clamping lever 206 strikes the handle 100 and is therefore pivoted when the rolling element holder 200 is rotated again until it has passed the stop and can jump back into the starting position (cf. Fig. 3 ). After each complete 360 ° rotation of the rolling element holder 200 in the handle 100, the eccentric shaft 209 is thus rotated a short distance and the radial adjustment program of the rolling elements 204 is advanced one step.

Mit dem beschriebenen Mechanismus lässt sich die Radialverstellung der Wälzkörper 204 einfach an verschiedene Arten von zu verpressenden Rohren anpassen, indem eine rohrspezifische Exzenterwelle 209 in die Wälzkörperhalterung 200 eingesetzt wird.With the mechanism described, the radial adjustment of the rolling elements 204 can be easily adapted to different types of tubes to be pressed by inserting a tube-specific eccentric shaft 209 into the rolling element holder 200.

In den Fig. 1 bis 5 ist die Wälzkörperhalterung 200 ringförmig geschlossen dargestellt. In diesem Zustand kann sie nur von der Stirnseite her über ein Rohr (nicht dargestellt) gestülpt werden. Falls dies nicht möglich ist, kann die Wälzkörperhalterung 200 auch aufgeklappt werden, um von der Seite her auf ein Rohr aufgesetzt zu werden. Nach Aufsetzen kann die Wälzkörperhalterung dann rund um das Rohr geschlossen werden. Zum Aufklappen ist das Zahnrad an der Seite der Wälzkörperhalterung zum Beispiel zweiteilig aus einem C-förmigen Segment 207 und einem kürzeren Klappsegment 208 ausgebildet, welche Teile bei Bedarf auseinandergeklappt werden können. In Fig. 4 ist diesbezüglich eine schwenkbewegliche Klammer 213 erkennbar, welche im geschlossenen Zustand die Druckschale 201 und das Klappsegment 208 des Zahnrades mit dem Rest der Wälzkörperhalterung verbindet. Durch Ausrasten dieser Klammer können die genannten Teile dann um eine Achse X (Fig. 5) geschwenkt werden, wodurch sich der Ring der Wälzkörperhalterung öffnet.In the Figs. 1 to 5 the rolling element holder 200 is shown closed in a ring shape. In this state, it can only be slipped over a pipe (not shown) from the front. If this is not possible, the rolling element holder 200 can also be opened up in order to open it from the side Tube to be put on. After it has been placed, the rolling element holder can then be closed around the tube. To unfold the gear on the side of the rolling element holder, for example, is made in two parts from a C-shaped segment 207 and a shorter folding segment 208, which parts can be unfolded if necessary. In Fig. 4 In this regard, a pivotable bracket 213 can be seen which, in the closed state, connects the pressure shell 201 and the folding segment 208 of the gearwheel to the rest of the rolling element holder. By disengaging this clamp, the parts mentioned can then be rotated around an axis X ( Fig. 5 ) are pivoted, whereby the ring of the rolling element holder opens.

Fig. 8 zeigt eine einseitige Stützhülse S (Pressmuffe) vor Aufstecken eines zugehörigen Kunststoffrohres R auf die hierfür mit Ringspalten versehene Stützhülse. Der Zustand nach dem Einsetzen des Kunststoffrohres R und nach dem Verpressen von Stützhülse S und Kunststoffrohr R mit der erfindungsgemäßen Vorrichtung ist in Fig. 9 dargestellt. Deutlich erkennbar sind drei Verpressungsrillen V, die von den Wälzkörpern 204 erzeugt wurden. Fig. 8 shows a one-sided support sleeve S (compression sleeve) before an associated plastic pipe R is plugged onto the support sleeve provided with annular gaps for this purpose. The state after the insertion of the plastic pipe R and after the pressing of the support sleeve S and plastic pipe R with the device according to the invention is shown in FIG Fig. 9 shown. Three compression grooves V, which were produced by the rolling elements 204, are clearly visible.

Selbstverständlich können auch beliebige andere Werkstücke/Fittings mit der Vorrichtung bearbeitet bzw. verpresst werden, insbesondere Doppelnippel, an die beidseitig (spiegelsymmetrisch) ein Rohr angeschlossen werden kann.Of course, any other workpieces / fittings can also be processed or pressed with the device, in particular double nipples to which a pipe can be connected on both sides (mirror-symmetrically).

Während des Verpressens ist vorzugsweise die radiale (umfängliche) und die axiale Lage der Handhabe auf dem Werkstück (z. B. der Stützhülse S und dem Kunststoffrohr R von Fig. 8, 9) fixiert. Beispielsweise kann ein formschlüssiger Eingriff an einer unrunden Außenkontur des Werkstücks (insbesondere an Schlüsselflächen) oder an radial abstehenden Kragen des Werkstücks erfolgen.During the pressing process, the radial (circumferential) and the axial position of the handle on the workpiece (e.g. the support sleeve S and the plastic tube R from Figures 8, 9 ) fixed. For example, a form-fitting engagement can take place on an out-of-round outer contour of the workpiece (in particular on key surfaces) or on radially protruding collars of the workpiece.

Die vorstehend genannten Möglichkeiten sind in den Fig. 10-12 für einen Sonderfall näher erläutert. Zur besseren Übersichtlichkeit ist in den Fig. 10 und 11 die Wälzkörperhalterung nicht dargestellt worden. Gezeigt wird ein Rohr R, welches durch eine Presshülse H mit einer zweiseitigen Stützhülse S' (Doppelnippel) verbunden werden soll. Von der Stützhülse S' ist in den Fig. 10 und 11 nur die rechte Hälfte zu sehen. Im Gegensatz zu der Stützhülse S der Fig. 8 und 9 ist diese Stützhülse S' zweiseitig und spiegelbildlich ausgebildet, wobei der nicht sichtbare Teil vom Rohr R und der Presshülse H überdeckt wird. Fig. 10 zeigt somit links eine zum Verpressen vorbereitete Seite und rechts eine noch freie Seite einer zweiseitigen Stützhülse S'.The above options are in the Fig. 10-12 explained in more detail for a special case. For better clarity, the Fig. 10 and 11 the rolling element holder has not been shown. A pipe R is shown, which is to be connected by a compression sleeve H to a two-sided support sleeve S '(double nipple). From the support sleeve S 'is in the Fig. 10 and 11 only the right half to see. In contrast to the support sleeve S the Figures 8 and 9 this support sleeve S 'is designed on two sides and in mirror image, with the part that is not visible being covered by the tube R and the compression sleeve H. Fig. 10 thus shows a side prepared for pressing on the left and a still free side of a two-sided support sleeve S 'on the right.

Die Fig. zeigen weiterhin eine Handhabe 100 der oben beschriebenen Art, bei welcher im Wesentlichen nur die Schlüsselscheibe 102' anders als bei den vorhergehenden Ausführungsformen ist. Die Schlüsselscheibe 102' ist nämlich mit Schlüsselflächen versehen, mit welchen sie am Außensechskant AS der Presshülse H angreifen kann, um die Hülse drehfest gegenüber der Handhabe 100 zu lagern. Auf diese Weise wird ein Mitdrehen der Presshülse H während des Pressvorganges ausgeschlossen.The figures also show a handle 100 of the type described above, in which essentially only the key disc 102 'is different from the previous embodiments. The key washer 102 ′ is provided with key surfaces with which it can engage the external hexagon AS of the compression sleeve H in order to mount the sleeve in a rotationally fixed manner relative to the handle 100. In this way, the compression sleeve H cannot rotate during the pressing process.

Wie Fig. 10 weiterhin erkennen lässt, ist die Führungsscheibe 110' der Handhabe 100 in einer Aufnahme N des zu verpressenden Werkstücks mit seitlichen Anschlägen gelagert, um dieses in axialer Richtung zu fixieren. Eine separate perspektivische Ansicht der Presshülse H mit dem Außensechskant AS ist in Fig. 12 dargestellt.As Fig. 10 can also be seen, the guide disk 110 'of the handle 100 is mounted in a receptacle N of the workpiece to be pressed with lateral stops in order to fix it in the axial direction. A separate perspective view of the compression sleeve H with the external hexagon AS is shown in Fig. 12 shown.

Fig. 13 zeigt eine Seitenansicht (rechts teilweise im Schnitt) und Fig. 14 eine Perspektive der zweiseitigen Stützhülse S' der Fig. 10 und 11. Symmetrisch zur mittigen Aufnahme N hat die Stützhülse S' zwei Fortsätze mit umlaufenden Dichtungszähnen an der Außenoberfläche, welche sich beim Verpressen in ein Rohr eingraben. Des Weiteren kann optional eine Verdrehsicherung vorgesehen sein, welche eine Drehung zwischen der Stützhülse S' und einem aufgesteckten Rohr verhindert (beim Verpressen und auch später im Dauereinsatz mit fließenden Medien im Lastwechsel heißer/kalter Flüssigkeiten sowie bei Druckstößen im Leitungssystem). Die Verdrehsicherung kann beispielsweise aus einer Rändelung (nicht dargestellt) bestehen, welche vorzugsweise im mit "X" gekennzeichneten Bereich nahe der Aufnahme N auf der Außenoberfläche der Stützhülse S' und/oder an den Dichtungszähnen angebracht ist (z. B. realisiert durch ca. 1 mm tiefe und ca. 1 mm breite Rillen). Fig. 13 shows a side view (right partially in section) and Fig. 14 a perspective of the two-sided support sleeve S 'of Fig. 10 and 11 . Symmetrical to the central receptacle N, the support sleeve S 'has two extensions with circumferential sealing teeth on the outer surface, which dig into a pipe when being pressed. Furthermore, an anti-rotation device can optionally be provided, which prevents rotation between the support sleeve S 'and an attached pipe (during pressing and also later in continuous use with flowing media in the load change of hot / cold liquids and pressure surges in the line system). The anti-rotation device can consist, for example, of knurling (not shown), which is preferably located in the area marked "X" near the receptacle N on the outer surface of the support sleeve S 'and / or is attached to the sealing teeth (e.g. implemented by approx. 1 mm deep and approx. 1 mm wide grooves).

Vorzugsweise sind die Schlüsselscheiben 102, 102' und die Führungsscheiben 110, 110' sowie optional auch die Seitenplatte 101 und das Stützlager 104 austauschbar bzw. leicht ummontierbar, um verschiedene Rohr-und Werkstückdurchmesser verarbeiten zu können. Vorteilhafterweise kann dabei ein Satz dieser Elemente jeweils für einen Bereich von Rohrdurchmessern nutzbar sein (beispielsweise von 20-40 mm, 50-110 mm).The key washers 102, 102 'and the guide washers 110, 110' and optionally also the side plate 101 and the support bearing 104 can be exchanged or easily remounted in order to be able to process different pipe and workpiece diameters. A set of these elements can advantageously be used for a range of pipe diameters (for example from 20-40 mm, 50-110 mm).

Claims (8)

  1. Device for processing tubes (R) and other round bodies (S) containing:
    a) a roller body holder (200) with at least one rotatably mounted roller body (204) which can exert pressure onto a round body located in the pressing chamber (P) of the roller body holder, with a movable support formed as a lever (203) on which the roller body (204) is rotatably mounted and which is pivotably mounted on the roller body holder (200), and with a rotationally movable eccentric shaft (209) which is swept by the support (203);
    b) a handle (100) in which the roller body holder (200) can be mounted to rotate about a working axis (A) which passes through the pressing chamber (P),
    wherein a plurality of roller bodies (204) are each rotatably mounted on a lever (203), characterised in that
    the levers (203) lying, by means of their ends which are opposite to the roller bodies, against an eccentric shaft (209) sweep different contours of the eccentric shaft (209).
  2. Device as claimed in claim 1, characterised in that it contains a blocking mechanism by which the rotation of the roller body holder (200) relative to the handle (100) can be blocked in one direction.
  3. Device as claimed in claim 1 or 2, characterised in that the handle comprises a drive shaft (111) for attachment of a manual or mechanical rotary drive, wherein a rotation of the drive shaft effects a rotation of the roller body holder about the working axis.
  4. Device as claimed in any one of claims 1 to 3, characterised in that one roller body (204) is a cutting knife.
  5. Device as claimed in any one of claims 1 to 4, characterised in that the eccentric shaft (209) can rotate in only one rotational direction.
  6. Device as claimed in at least one of claims 1 to 5, characterised in that the eccentric shaft (209) is rotated when the roller body holder (200) rotates in the handle (100).
  7. Device as claimed in any one of clams 1 to 6, characterised in that the roller body holder (200) contains at least two components (207, 208) which can be separated in order to introduce a round body into the pressing chamber (P) and can then be closed to form a ring around the round body.
  8. Device as claimed in any one of claims 1 to 7, characterised in that the handle (100) comprises mounting means (102') for form-fitting attachment to the workpiece (H).
EP18191204.9A 2011-03-17 2012-03-16 Device for processing tubes and other round objects Active EP3427897B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011001342A DE102011001342A1 (en) 2011-03-17 2011-03-17 Device for pressing pipe connections
EP12159790.0A EP2500140B1 (en) 2011-03-17 2012-03-16 Device for working on round workpieces

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP12159790.0A Division EP2500140B1 (en) 2011-03-17 2012-03-16 Device for working on round workpieces
EP12159790.0A Division-Into EP2500140B1 (en) 2011-03-17 2012-03-16 Device for working on round workpieces

Publications (2)

Publication Number Publication Date
EP3427897A1 EP3427897A1 (en) 2019-01-16
EP3427897B1 true EP3427897B1 (en) 2021-01-27

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Application Number Title Priority Date Filing Date
EP12159790.0A Active EP2500140B1 (en) 2011-03-17 2012-03-16 Device for working on round workpieces
EP18191204.9A Active EP3427897B1 (en) 2011-03-17 2012-03-16 Device for processing tubes and other round objects

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12159790.0A Active EP2500140B1 (en) 2011-03-17 2012-03-16 Device for working on round workpieces

Country Status (6)

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EP (2) EP2500140B1 (en)
DE (1) DE102011001342A1 (en)
DK (1) DK2500140T3 (en)
HU (1) HUE043653T2 (en)
PL (1) PL2500140T3 (en)
SI (1) SI2500140T1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013105481A1 (en) 2013-05-28 2014-12-04 Daniel Knipping Expansion of pipes
CN111457154A (en) * 2020-04-02 2020-07-28 王小娇 Emergency respiratory tube erecting device
CN114961989B (en) * 2021-02-23 2023-07-25 北京福田康明斯发动机有限公司 Engine crankshaft disc headstock and automatic adjusting method thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR954885A (en) 1945-09-13 1950-01-06
US3062263A (en) * 1959-08-17 1962-11-06 American Can Co Beading machine
DE2511942C2 (en) 1975-03-19 1977-04-07 Herbert Engelmann DEVICE FOR CLAMPING FASTENING OF A SLEEVE, E.G. METAL SLEEVE, AT THE END OF A HOSE, CABLE OR DGL.
JPS61121813A (en) * 1984-11-17 1986-06-09 Dia Kogyo Kk Pipe cutoff machine
JPH04339527A (en) * 1991-05-16 1992-11-26 Mirano:Kk Device for forming tip part of pipe
US5528919A (en) * 1995-02-02 1996-06-25 Emerson Electric Company Roll grooving apparatus
DE10243706C1 (en) * 2002-09-20 2003-09-25 Daniel Knipping Compression tool for pipe connection fitting has C-shaped holder for several rollers providing radial pressure rotated relative to operating handle about working axis
DE10342172A1 (en) 2002-09-20 2005-06-16 Daniel Knipping Compression tool for pipe connection fitting has C-shaped holder for several rollers providing radial pressure rotated relative to operating handle about working axis
US20060230802A1 (en) 2005-04-14 2006-10-19 Itt Manufacturing Enterprises, Inc. Apparatus for making grooved endform
US20100166516A1 (en) 2008-12-30 2010-07-01 Philip Karow Cutting and Chamfering Router Bit for Pipe

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
EP2500140A2 (en) 2012-09-19
SI2500140T1 (en) 2019-03-29
DE102011001342A1 (en) 2012-09-20
EP3427897A1 (en) 2019-01-16
HUE043653T2 (en) 2019-08-28
EP2500140A3 (en) 2016-11-23
DK2500140T3 (en) 2019-03-25
EP2500140B1 (en) 2018-12-05
PL2500140T3 (en) 2019-07-31

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