EP1055488B1 - Device for producing a pressing force - Google Patents

Device for producing a pressing force Download PDF

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Publication number
EP1055488B1
EP1055488B1 EP00110784A EP00110784A EP1055488B1 EP 1055488 B1 EP1055488 B1 EP 1055488B1 EP 00110784 A EP00110784 A EP 00110784A EP 00110784 A EP00110784 A EP 00110784A EP 1055488 B1 EP1055488 B1 EP 1055488B1
Authority
EP
European Patent Office
Prior art keywords
pressing
housing
unit
piece
advantageously
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.)
Revoked
Application number
EP00110784A
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German (de)
French (fr)
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EP1055488A3 (en
EP1055488A2 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rems Werk Christian Foell und Soehne GmbH and Co
Original Assignee
Rems Werk Christian Foell und Soehne GmbH and Co
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Priority claimed from DE19949797A external-priority patent/DE19949797A1/en
Application filed by Rems Werk Christian Foell und Soehne GmbH and Co filed Critical Rems Werk Christian Foell und Soehne GmbH and Co
Publication of EP1055488A2 publication Critical patent/EP1055488A2/en
Publication of EP1055488A3 publication Critical patent/EP1055488A3/en
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Anticipated expiration legal-status Critical
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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

Definitions

  • the invention relates to a device for applying a compressive force according to the preamble of claim 1.
  • axial pressing technique it is known to use a press fitting of support sleeve and pressure sleeve.
  • the one pipe is first expanded before the press fitting can be inserted into the expanded pipe end.
  • This additional expansion process is complicated and means an additional step.
  • the pressure sleeve is pressed by means of the device axially to the stop on the fitting.
  • a pressing ring and a crimping ring are pushed over the tube.
  • a support sleeve (fitting) is inserted into the pipe and the press ring with the aid of the device is pressed axially over the crimp ring to the stop on the support sleeve.
  • a prior expansion of the tube is not necessary.
  • a manually operated pressing device which is designed similar to a pair of pliers. It has actuating arms that are reciprocated back and forth against each other during the axial pressing operation, wherein a pressing member is moved in the direction of the other pressing member via a chain or a ratchet. Also, this device has large dimensions and is unwieldy to use.
  • a pressing member is provided on a sliding sleeve which is movable on a pipe piece in the direction of the other pressing member by means of hydraulic medium. From one end of the pipe section is perpendicular from another piece of pipe, through which the hydraulic medium is supplied. At the free end of this further Rohrstükkes the hydraulic hose is connected, which is connected to a hydraulic unit arranged in space. From this further piece of pipe is perpendicular from a handle with which this device can be held.
  • the device can only carry awkward, since the handle at one end and the pipe support piece for the pressing parts are arranged at the other end of the tube. It is therefore considerable effort necessary to hold the device during the pressing process.
  • Further pressing devices are designed as sliding tongs, in which pressing parts again perform a pivoting movement, which leads to problems with straight tubes.
  • the invention has the object of providing the generic device in such a way that with a structurally simple design and ease of handling a perfect compression is guaranteed.
  • the device is designed as a portable tool that can be comfortably carried by the operator.
  • the device has a housing 1, which advantageously consists of two detachably interconnected housing shells.
  • the housing 1 may also be composed of more than two housing parts.
  • the housing 1 is approximately pistol-shaped and has an elongated housing part 2, in which a hydraulic part 3 (FIG. 2) of a drive 4 is accommodated.
  • a housing part 5 which is longer in the axial direction and in which a mechanical part 6 of the drive 4 is accommodated.
  • From the housing part 5 is transverse from a handle part 7, which is also part of the housing 1 and in which an electrical / electronic part 8 of the drive 4 is located.
  • the handle part 7 is set back relative to the housing part 5.
  • the longitudinal axis 9 of the handle portion 7 is at an obtuse angle ⁇ to the longitudinal axis 10 of the housing part 5.
  • the longitudinal axis 10 in turn is parallel to the longitudinal axis 11 of the housing part 2 (Fig. 1).
  • the handle part 7 is preceded by a hollow web 12 which extends approximately parallel to the longitudinal axis 9 of the handle portion and is spaced therefrom.
  • a handle opening 13 is formed between the handle part 7 and the web 12.
  • the web 12 and the handle part 7 merge into one another via a crosspiece 14, which is likewise designed as a hollow part.
  • the device is preferably held on the grip part 7, wherein the user, as indicated in Fig. 2 by dashed circles, the grip part 7 comprises.
  • the hand of the user attacks thus through the handle opening 13.
  • the web 12 protects the user's hand during the pressing process.
  • a switch 15 which can be easily pressed when gripping the handle part 7 with the index finger to turn on the drive 4.
  • the switch 15 may be formed so that it must be kept pressed during the pressing process. Once the switch 15 is released, the drive 4 is turned off. But it is also possible to form the switch 15 so that it must be pressed to turn on the drive and pressed to turn off a second time.
  • This embodiment has the advantage that the operator does not have to constantly keep the switch 15 pressed during the pressing process.
  • the device can also be taken so that the hand surrounds the handle part 7 and the web 12, as indicated in Fig. 2 by further dashed circles.
  • the housing part 5 and a part of the web 12 are provided on their side facing away from the handle part 7 with recessed grips 16, so that the fingers find a secure hold on the housing 1.
  • the crosspiece 14 of the housing 1 may be formed as a receptacle for at least one battery or a battery.
  • the device can also be operated via the mains. In this case, a (not shown) power cord from the housing 1, preferably down out of the crosspiece 14, led out.
  • the electrical / electronic part 8 of the drive 4 is space-saving housed in the narrow handle part 7.
  • This drive member 6 has an electric motor 17, whose axis 18 is parallel to the longitudinal axis 10, advantageously in the longitudinal axis.
  • a protruding from the motor housing 19 motor shaft 20 is coupled to a downstream reduction gear 21, which is advantageously a planetary gear.
  • the Reduction gear 21 is advantageously formed at least two stages.
  • the preferred use of a planetary gear as a reduction gear 21 has the advantage that it requires little space at a high reduction ratio. Therefore, the reduction gear 21 can be accommodated extremely space-saving in the housing part 5.
  • the longitudinal axis 22 of the reduction gear is advantageously in alignment with the longitudinal axis 18 of the motor 17th
  • An output shaft 23 of the reduction gear 21 carries outside of a housing 25 of the reduction gear 21 an eccentric 24, on which an elliptical ring 26 is mounted directly or with the interposition of an intermediate ring.
  • the longitudinal axis of this elliptical ring 26 extends perpendicular to the axis of the output shaft 23 and perpendicular to the plane of the drawing, while the minor axis lies in the plane of the drawing of FIG.
  • the eccentric 24 or sitting on it round ring abuts against the inner wall of the plane perpendicular to the plane extending portions of the ring 26. If the output shaft 23 is rotated about its axis, the ring 26 is moved up and down via the eccentric piece 24 in the direction of the double arrow 27 in FIG. 2 in the drawing plane.
  • Such an eccentric drive is known and is therefore not described in detail.
  • a check valve 36 which closes a perpendicular to the piston chamber 31 bore 37 against the memory 33.
  • the smaller flow area than the piston 31 having bore 37 opens into the piston chamber 31 at the end facing away from the eccentric 23, 24, 26 end. In this area opens into the piston chamber 31, a feed bore 38, which is also provided in the hydraulic block 32 and extends perpendicular to the piston chamber 28 and advantageously in alignment with the bore 37.
  • the hydraulic medium for actuating a pressing member 39 is supplied in a manner to be described.
  • the longitudinal axis 85 of the hydraulic block 32 is advantageously in the longitudinal axis 11 of the housing part 2.
  • the two holes 37, 38 in the hydraulic block 32 are advantageously on the side facing away from the reduction gear 21 side of the longitudinal axis 39 of Hydraulikblokkes 32nd
  • the piston chamber 31 is in the illustrated embodiment in a Transverse median plane of the hydraulic block 32.
  • the piston 28 is sealed out in the piston chamber 31 and serves to suck by reciprocating movements, the hydraulic medium from the memory 33 and supply via the feed bore 38 of the pressing unit 40.
  • the hydraulic block 32 has, as FIG. 3 shows, at the end facing away from the memory 33 a recess 41 into which the pressing unit 40 is inserted with a projection 42.
  • the pressing unit 40 is releasably secured by threaded pins 43 in the recess 41 of the hydraulic block 42.
  • the projection 42 is axially penetrated by a bore 44 which is connected to the pressing unit 40 via an annular groove 87 in flow communication with the supply bore 38 of the hydraulic block 32.
  • the projection 42 is sealed by at least one annular seal 45 with respect to the inner wall of the recess 41 of the hydraulic block 32, so that the hydraulic medium can not escape from the recess 41 of the hydraulic block 32 to the outside.
  • the approach 42 is centered from a bottom 46 of the pressing unit 40.
  • the bottom 46 is plate-shaped and extends in a plane perpendicular to the longitudinal axis 85 of the hydraulic block 32 level.
  • the bottom 46 is connected to a wall 47 which adjoins it perpendicularly, preferably in one piece with it. It connects the bottom 46 with a parallel to him wall 48, which is also advantageously integrally formed with the wall 47.
  • the bottom 46 and the two walls 47, 48 are closed at their above and below the plane of FIG. 3 lying ends by further walls. All walls are integrally formed and define a centrally located cylinder chamber 49 (FIGS. 3 and 4), in which a piston 50 is displaceable sealed.
  • the bottom 46, the walls 47, 48 and connecting them further walls thus form a housing 51 in which the cylinder chamber 49 is provided.
  • the housing 51 has, as is apparent from Fig. 4, rectangular, in particular square outline seen in the direction of the axis 52 of the piston 50.
  • the housing 51 carries on the side facing away from the housing 1 side of a stationary pressing member 53 which is opposite to the other pressing member 39.
  • the two pressing parts 39, 53 are the same design, but arranged mirror-symmetrically to each other. Therefore, in the following, only the pressing member 39 will be explained with reference to FIG. 4.
  • the pressing member 39 is formed bow-shaped and has an approximately semi-cylindrical receptacle 54 for the workpiece to be pressed.
  • the receptacle 54 is bounded by a in view of FIG. 4 approximately semicircular bracket 55, projecting from the two mutually parallel legs 56, 57, which are interconnected by a transverse pin 58.
  • the two legs 56, 57 are connected via the transverse pin 58 with a carriage 59 which has a U-shape in plan view according to FIG. It is flat with flat legs 60, 61 at mutually parallel outer sides 62, 63 of the housing 51 at.
  • the outer sides 62, 63 are provided with an outwardly directed shoulder 64, 65, which corresponding paragraphs 66, 67 on the inner sides of the legs 60, 61 of the carriage 59 are assigned.
  • Paragraphs 64, 65; 66, 67 extend over the length of the outer sides 62, 63 and the legs 60, 61. The paragraphs ensures that the carriage 59 can not be withdrawn from the housing 51 transversely to the paragraphs.
  • the web 68 connecting the two legs 60, 61 of the carriage 59 bears against the wall 48 of the housing 51.
  • a projection 69 on the side facing away from the housing 51 side, which engages between the two legs 56, 57 of the pressing member 39 and is penetrated by the transverse pin 58.
  • the legs 56, 57 abut against the outer sides of the projection 69.
  • the end faces 70, 71 of the two legs 56, 57 bear against the web 68 of the carriage 59.
  • the two legs 60, 61 of the carriage 59 extend almost over the entire length of the housing 51. It is open on its side 47 opposite the wall. It is closed by a plate-shaped support 72 (FIG. 3) which connects the free ends of the legs 60, 61 to each other and on which the piston 50 is fastened. It is designed for weight reasons as a hollow body which is closed at one end by the carrier 72.
  • the walls 46, 62, 63 of the housing 51 define with their free ends a recess 73 into which the carrier 72 engages when the piston 50 is retracted (FIG. 3). In this position, the carrier 72 hits the ground 74 of the recess 73 at. The opposite, acted upon by the hydraulic medium piston surface 75 in this position still distance from the bottom 76 of the cylinder chamber 49. This ensures that the hydraulic medium can reach the piston surface 75 even with fully retracted piston 50.
  • the projection 69 of the carriage 59 extends, as shown in FIG. 3, only over a part of the height of the housing 51.
  • Fig. 3 shows the initial position of the pressing member 39, in which it has the greatest distance from the opposite pressing member 53, the difference to the pressing member 39 rigid, preferably integrally formed with the piston housing 51. During the pressing operation, the pressing member 39 is moved against the pressing member 53.
  • the carriage 59 ensures a perfect, in particular tilt-free guidance of the pressing member 39 on the piston housing 51st
  • the two brackets 55 of the pressing parts 39, 53 are provided on their sides facing away from each other with a stiffener 78, 79 which extends almost over the entire circumference of the bracket 55 and steadily increases from the strap ends in the direction of the neck 69.
  • the stiffeners 78, 79 seen perpendicular to the direction of displacement of the pressing member 39 (FIG. 3) have a triangular outline. Because of these stiffeners 78, 79 very high compressive forces can be applied without the risk that the bracket 55 of the pressing parts 39, 53 are deformed unduly.
  • the bore 44 extends (Fig. 3) into the wall 46 of the piston housing 51. At the end lying in this wall 46 of the bore 44 closes perpendicularly extending in the wall 46 bore 80th which extends to the outside of the wall 47 of the piston housing 51.
  • the bore 80 can be easily produced in the piston housing 51 in this way. The bore 80 is closed to the outside of the wall 47.
  • connection from the bore into the cylinder chamber 49 is made by a further bore 81, which acts from the outside of the wall 46 of the piston housing 51 into the cylinder chamber 49.
  • this bore 81 can be produced by a simple manufacturing process.
  • the bore 81 which intersects the hole lying perpendicular to her, closed.
  • the pressing unit 40 can be rotated about the axis 82 of its neck 42.
  • the cylindrical projection 42 is provided on its outer side with an annular groove 83 into which the threaded pins 43 engage.
  • the pressing unit 40 is secured against lifting from the housing 1, but can be infinitely rotated about the axis 82. This has the advantage that the pressing parts 39, 53 can be brought into the respective optimum position for the pressing process.
  • the pressing member 39 is advantageously in its starting position shown in FIGS. 2 and 3.
  • the two brackets 55 of the pressing parts 39, 53 are parallel to each other.
  • an axial pressing technique is carried out, which is known per se.
  • a pressing ring and a squeezing ring is pushed over a tube into which a support sleeve is inserted.
  • the press ring is now pressed by means of the pressing unit 40 axially over the crimp ring to a stop on the support sleeve (fitting).
  • this axial displacement of the pressing ring is a radial compression.
  • the tube is inserted into the two pressing parts 39, 53, that the pressing ring to be displaced between the two pressing parts 39, 53 is arranged and bears with one end on the pressing part 39.
  • the fork 55 of the pressing member 39 takes with the press ring and moves it over the squeeze ring located on the tube until the press ring comes to rest on the support sleeve.
  • the support sleeve was supported axially on the fork 55 of the pressing member 53 from.
  • the motor 17 is turned on with the switch 15.
  • the high speed of the motor shaft 20 is converted by the reduction gear 21 in a correspondingly low speed of the drive shaft 23 of the reduction gear 21.
  • the seated on the output shaft 23 eccentric 24 performs an eccentric movement.
  • the elliptical ring 26 is thereby moved up and down in the direction of arrow 27 (FIG. 2), whereby the piston 28 is moved up and down in the piston chamber 31 of the hydraulic block 32 accordingly. If the piston 29 moves downwards from the position according to FIG. 2, it sucks in hydraulic medium from the reservoir 33 via the check valve 36 and the bore 37.
  • the hydraulic medium which is located in the bore 37 and in the piston chamber 31, is pressurized and conveyed via the bores 38, 44, 80, 81 into the cylinder chamber 49.
  • the piston 50 is thereby pressurized, so that it is moved from the position shown in FIGS. 2 and 3 down.
  • the pressing member 39 is moved in the direction of the opposite pressing member 53.
  • the fork 55 of the pressing member 39 takes the press ring and moves it over the squeezing ring.
  • the piston 28 located in the hydraulic block 32 is constantly moved up and down by the rotation of the eccentric piece 24, in each case conveying the hydraulic medium into the cylinder space 49 in the manner described and displacing the piston 50 therein continuously downwards.
  • the motor 17 is advantageously automatically switched off.
  • the shutdown can be easily determined by the fact that in the stop position of the press ring on the support sleeve of the further displacement of the pressing member 39 required pressure increases sharply, so that this pressure rise detected and to shutdown the engine 17 is used.
  • pressure relief valve is opened by the increase in pressure, so that the hydraulic medium flows back from the piston chamber 49 via a (not shown) return bore to the memory 33.
  • This remindströmvorgang is triggered by the fact that the piston 50 is pushed back by spring force into its initial position shown in FIG. Fig. 4 shows two compression springs 88, 89, which are partially housed in the housing 51 and are supported on the legs 60, 61 of the carriage 59.
  • the tube can be easily removed from the pressing unit 40 perpendicular to the direction of movement of the pressing member 39.
  • the device described is extremely compact and, above all, lightweight in weight.
  • the housing 1 with the drive housed therein, the piston 50 and the pressing member 39 are, viewed transversely to the direction of movement of the pressing member 39, one behind the other. This results in a compact design and in particular an optimal weight distribution of the device. It is not designed top-heavy, so that it can be kept comfortable by the user during the pressing process and also thereafter.
  • the device ensures easy handling.
  • the coupling piece in the form of the projection 42 ensures optimum connection to the hydraulic block 32, especially in the neck 42, the bore 44 is provided, which after the coupling operation with the provided in the hydraulic block 32 bore 38 via the annular groove 87th gets in line connection.
  • the piston 50 is transverse to the axis 82 of the neck 42. Also, this position results in an excellent weight distribution, which leads to an optimal handling of the device.
  • the pressing unit 40 Since the pressing unit 40 is rotatable, it can be adapted in place to the parts to be pressed by appropriate rotational movement. Thus, with the pressing unit 40 also already mounted pipes and the like can be pressed, in which case the pressing unit 40 can be easily adapted to the position of the mounted pipes and the like.
  • An essential feature of the device is the fact that the pressing unit 40 is rotatable about the axis 82 of the projection 42.
  • the axis 82 is at least approximately in a plane of symmetry of the pressing unit 40, based on the initial position of the pressing member 39 shown in FIG. 3.
  • the weight distribution when rotating the pressing unit 40 does not change or only insignificantly. Therefore, the device can be optimally held in any position of the pressing unit 40.
  • the axis 82 of the projection 42 is preferably in the axis 85 of the hydraulic block 32, which in turn advantageously holds together with the longitudinal axis 11 of the housing part 2. This will be an excellent Weight distribution achieved, which leads to easy handling of the device during the pressing process.
  • Fig. 5 shows an embodiment in which a radial compression is performed with the pressing parts of the pressing unit.
  • the two pressing parts 39, 53 of the pressing unit 40 based on the previous embodiment, rotated by 90 ° provided to each other, so that the receptacles 54 of their two forks 55 are directed against each other.
  • Fig. 5 shows the end position of the pressing member 39, in which its fork rests against the fork 55 of the device fixed pressing member 53.
  • the pressing member 39 is fixedly connected to the carriage according to the previous embodiment, from which in Fig. 5, the carrier 72 can be seen, which carries the piston 50.
  • this device is the same design as the previous embodiment.
  • the corresponding tube or pipe section is placed in the receptacle 54 of the pressing member 53.
  • the piston 50 is retracted at the beginning of the pressing process, so that the pressing member 39 is at a corresponding distance from the pressing member 53.
  • the piston 28 located in the hydraulic block 32 is constantly reciprocated, wherein it promotes the hydraulic medium in the cylinder chamber 49 under pressure, whereby the piston 50 is moved in Fig. 5 down.
  • the lying in the receptacle 54 of the pressing member 53 tube, pipe section, support sleeve and the like is pressed radially.
  • FIG. 5 shows the workpiece 86 radially compressed by the two pressing parts 39, 53.
  • the two embodiments are each formed as electro-hydraulic tools in which the one pressing member 39 is displaced by applying the piston 50 by means of hydraulic medium.
  • the adjustment of the pressing member 39 can also be done mechanically, for example via a spindle drive.
  • a hydraulic medium is not required.
  • the motor 17 drives in this case via the reduction gear 21 to the spindle drive, through which the pressing member 39 is moved relative to the other pressing member 53.
  • Figs. 6 to 8 show a device which is also formed according to the previous embodiments as an electro-hydraulic, portable tool.
  • the two pressing parts 39, 53 of the pressing unit 40 With the two pressing parts 39, 53 of the pressing unit 40, an axial compression is made.
  • the drive of the pressing parts 39, 53 takes place in the same manner as in the embodiment according to FIGS. 1 to 4.
  • the pressing unit 40 has the projection 42 which engages in the recess 41 of the hydraulic block 32.
  • the piston 50 is displaceable, which, as has been described with reference to the embodiment of FIGS. 1 to 4, can be displaced by hydraulic medium.
  • the pressing parts 39, 53 are held interchangeable in corresponding receptacles 88, 89 as in the previous embodiments. They have cylindrical receiving spaces 90, 91, the cylindrical pins 92, 93 of the pressing parts 39, 53 receive a positive fit.
  • the pins 92, 93 are each provided with a lying in a radial plane annular groove 94, 95, in the locking elements 96, 97, preferably locking balls intervene. They are under the force of a respective helical compression spring 98, 99, which is housed in a transverse bore 100, 101 of the receptacles 88, 89.
  • the transverse bores 100, 101 are closed by a respective stud 102, 103.
  • the pressing parts 39, 53 with a base body 104, 105 on the end face 106, 107 of the receptacles 88, 89 are on.
  • the pressing parts 39, 53 are advantageously formed in one piece. Since the pins 92, 93 of the pressing parts 39, 53 have a cylindrical shape, they can be manufactured in a simple and cost-effective manner compared with conventional press parts. In conventional press parts of the plug-in approach consists of a subsequent to the body rectangular attachment portion and an adjoining cylindrical attachment part. As a result, the production of such pressed parts is complicated and expensive.
  • the annular grooves 94, 95 can also be easily and inexpensively attached to the pins 92, 93.
  • a further advantage is that the locking elements are not, as in the conventional press parts, housed in the press parts themselves, but in the tool-side receptacles 88, 89.
  • the receptacles 88, 89 provided with supports 108, 109 for the pressing parts 39, 53.
  • the supports 108, 109 are provided on the receptacles 88, 89, that the pressing parts 39, 53 are supported on the supports under the reaction force occurring during the pressing process. This results in a favorable power transmission during the pressing process.
  • the supports 108, 109 are advantageously formed strip-shaped and project beyond the end face 106, 107 of the receptacles 88, 89.
  • the pressing parts 39, 53 rest with their basic bodies 104, 105 on the supports 108, 109, which are advantageously formed integrally with the receptacle 88, 89.
  • pressing parts 39, 53 can be inserted into the receptacles 88, 89.
  • the pins 92, 93 are relatively short, so that the pressing parts 39, 53 have a stocky design, which also results in a favorable power and power transmission.
  • the pins 92, 93 are eccentric with respect to the base 104, 105 are provided.
  • the distances 110, 111 (Fig. 6) between the axis 112 of the pins 92, 93 and the opposite outer sides 113, 114 of the base body 104, 105 of the pressing parts 39, 53 are different. This has the advantage that the pressing parts 39, 53 can not be inserted laterally into the receptacles 88, 89.
  • the pressing parts 39, 53 are otherwise the same design as in the embodiment according to FIGS. 1 to 4.
  • the workpieces to be pressed together axially are inserted in the manner described in the pressing parts 39, 53.
  • the motor 17 ( Figure 2) is turned on, whereby the two pressing members 39, 53 are moved relative to each other, wherein the axial pressing takes place.
  • the axis 82 of the projection 42 extends through the maximum adjustment of the pressing member 39.
  • the two pressing members 39, 53 are thereby at least partially on either side of the axis 82 of the projection 42, resulting in an optimal weight distribution.
  • a tube expander 115 can be connected to the pressing unit 40. It has a housing 116 (Fig. 7) which is open at both ends and in which an expanding mandrel 117 is housed in a known manner.
  • the housing 116 has at its the pressing unit 40 side facing a radially outwardly directed flange 118, with which the tube expander 115 can be releasably attached to the pressing unit 40.
  • the axis of the tube expander 115 coincides with the axis of the piston 50.
  • Fig. 7 shows in the upper half of the expanding mandrel 117 in its retracted position in which the expansion segments 120 abut in a known manner.
  • the lower half in Fig. 7 shows the expanding mandrel 117 in its extended position.
  • the expansion segments 120 are moved radially outward during extension of the expanding mandrel 117, whereby the tube inserted onto the expansion segments 120 is radially expanded.
  • the expansion segments 120 are each provided on the inside with a conical surface 123, with which the expansion segments 120 abut the conical expanding mandrel 117.
  • the expansion segments 120 are provided in a known manner with cylindrical part surfaces 124, which bear against the inside of the tube to be expanded during the expansion process.
  • tubes By means of this optional tube expander 115, tubes, if necessary, can be expanded before the pressing process.
  • the tube is inserted with its one end on the expansion segments 120.
  • the motor 17 is turned on by actuating the switch 15, whereby the piston 50 is moved in the manner described with reference to FIGS. 1 to 4.
  • the bottom 76 of the piston 50 meets when moving on a plate-like end portion 125 of the expanding mandrel 117. It is thereby extended from its initial position (upper half in Fig. 7), whereby the expansion segments 120 radially be moved outwards and widen the pipe end.
  • the motor 17 is turned off.
  • the piston 50 is pushed back in the manner described by spring force to its original position.
  • the Aufweitdorn 117 is also advantageous under spring force, so that upon retraction of the piston 50 and the expanding mandrel 117 is pushed back into its original position.
  • the expansion segments 120 are also under spring force, so that the expansion segments are moved together radially when returning the mandrel 117.
  • the tube is removed and pushed onto a support sleeve of a fitting, which is placed in the corresponding pressing member 39, 53.
  • a support sleeve of a fitting which is placed in the corresponding pressing member 39, 53.
  • the other pressing part to be pressed with the fitting already placed on the tube compression sleeve is placed. It is pressed axially with the pressing unit in the manner described on the expanded, located on the support tube end.
  • nuts 119 with corresponding expansion segments 120 can be screwed onto the housing 116 of the tube expander 115.
  • the user of the device if he does not need the Rohraufweiter 115, solve the pressing unit 40 at any time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Press Drives And Press Lines (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Aufbringen einer Preßkraft nach dem Oberbegriff des Anspruches 1.The invention relates to a device for applying a compressive force according to the preamble of claim 1.

Es ist beispielsweise bei der Verbindung von Rohren bekannt, diese durch einen Preßvorgang miteinander fest zu verbinden. Hierbei werden eine radiale sowie eine axiale Preßtechnik angewendet. Bei der radialen Preßtechnik wird ein Preßfitting mit innen- oder außenliegendem Dichtring von Hand auf bzw. in das Rohr gesteckt. Mit der als Preßzange ausgebildeten Vorrichtung wird der Preßfitting radial gepreßt.It is known, for example, in the connection of pipes to connect them firmly together by a pressing operation. In this case, a radial and an axial pressing technique are used. In the radial pressing technique, a press fitting with internal or external sealing ring is placed by hand on or in the pipe. With the device designed as a press tool, the press fitting is pressed radially.

Bei der axialen Preßtechnik ist es bekannt, einen Preßfitting aus Stützhülse und Druckhülse zu verwenden. Um Rohre miteinander zu verbinden, wird das eine Rohr zunächst aufgeweitet, bevor der Preßfitting in das aufgeweitete Rohrende gesteckt werden kann. Dieser zusätzliche Aufweitvorgang ist aufwendig und bedeutet einen zusätzlichen Arbeitsschritt. Die Druckhülse wird mit Hilfe der Vorrichtung axial bis zum Anschlag an den Fitting gepreßt. Bei einer anderen axialen Preßtechnik werden ein Preßring und ein Quetschring über das Rohr geschoben. Eine Stützhülse (Fitting) wird in das Rohr gesteckt und der Preßring mit Hilfe der Vorrichtung axial über den Quetschring bis zum Anschlag an der Stützhülse gepreßt. Bei dieser Technik ist ein vorheriges Aufweiten des Rohres nicht notwendig.In the axial pressing technique, it is known to use a press fitting of support sleeve and pressure sleeve. In order to connect pipes together, the one pipe is first expanded before the press fitting can be inserted into the expanded pipe end. This additional expansion process is complicated and means an additional step. The pressure sleeve is pressed by means of the device axially to the stop on the fitting. In another axial pressing technique, a pressing ring and a crimping ring are pushed over the tube. A support sleeve (fitting) is inserted into the pipe and the press ring with the aid of the device is pressed axially over the crimp ring to the stop on the support sleeve. In this technique, a prior expansion of the tube is not necessary.

Es sind Vorrichtungen bekannt, die zwei von einem Grundkörper abstehende Arme aufweisen, die an ihren freien Enden jeweils ein Preßteil tragen. Die freien Enden der Arme sind durch eine Spindel miteinander verbunden, die mittels eines Ratschenschlüssels gedreht werden kann. Hierbei wird der eine Arm gegenüber dem anderen Arm geschwenkt. Aufgrund dieser Schwenkbewegung bewegt sich das eine Preßteil längs eines Kreisbogens, wodurch es zu Problemen beim Preßvorgang auf dem geraden Rohr kommt.There are devices are known which have two protruding from a body arms, which carry at their free ends in each case a pressing member. The free ends of the arms are connected together by a spindle which can be rotated by means of a ratchet wrench. In this case, one arm is pivoted relative to the other arm. Based on these Pivoting movement moves a pressing member along a circular arc, whereby it comes to problems in the pressing process on the straight pipe.

Es ist ferner eine manuell zu bedienende Preßvorrichtung bekannt, die ähnlich wie eine Zange ausgebildet ist. Sie hat Betätigungsarme, die beim axialen Preßvorgang gegeneinander hin- und hergeschwenkt werden, wobei über eine Kette oder eine Ratsche das eine Preßteil in Richtung auf das andere Preßteil bewegt wird. Auch diese Vorrichtung hat große Abmessungen und ist unhandlich beim Einsatz.It is also known a manually operated pressing device, which is designed similar to a pair of pliers. It has actuating arms that are reciprocated back and forth against each other during the axial pressing operation, wherein a pressing member is moved in the direction of the other pressing member via a chain or a ratchet. Also, this device has large dimensions and is unwieldy to use.

Es ist eine weitere Vorrichtung bekannt, bei der das eine Preßteil an einer Schiebehülse vorgesehen ist, die auf einem Rohrstück in Richtung auf das andere Preßteil mittels Hydraulikmedium bewegbar ist. Von einem Ende des Rohrstückes steht senkrecht ein weiteres Rohrstück ab, durch das das Hydraulikmedium zugeführt wird. An das freie Ende dieses weiteren Rohrstükkes ist der Hydraulikschlauch angeschlossen, der an ein im Raum angeordnetes Hydraulikaggregat angeschlossen ist. Von diesem weiteren Rohrstück steht senkrecht ein Griff ab, mit dem diese Vorrichtung gehalten werden kann. Infolge der beschriebenen Gestaltung läßt sich die Vorrichtung nur umständlich tragen, da der Griff am einen Ende und der Rohrstückträger für die Preßteile am anderen Ende des Rohres angeordnet sind. Es ist darum erheblicher Kraftaufwand notwendig, um die Vorrichtung während des Preßvorganges zu halten.It is a further device is known in which a pressing member is provided on a sliding sleeve which is movable on a pipe piece in the direction of the other pressing member by means of hydraulic medium. From one end of the pipe section is perpendicular from another piece of pipe, through which the hydraulic medium is supplied. At the free end of this further Rohrstükkes the hydraulic hose is connected, which is connected to a hydraulic unit arranged in space. From this further piece of pipe is perpendicular from a handle with which this device can be held. As a result of the described design, the device can only carry awkward, since the handle at one end and the pipe support piece for the pressing parts are arranged at the other end of the tube. It is therefore considerable effort necessary to hold the device during the pressing process.

Weitere Preßvorrichtungen sind als Schiebezangen ausgebildet, bei denen Preßteile wiederum eine Schwenkbewegung ausführen, was zu Problemen bei geraden Rohren führt.Further pressing devices are designed as sliding tongs, in which pressing parts again perform a pivoting movement, which leads to problems with straight tubes.

Es ist bekannt, eine solche Schwenkbewegung über einen zusätzlichen Hebelmechanismus in eine gerade Bewegung der Preßteile umzusetzen. Hierdurch ist aber der konstruktive Aufwand einer solchen Vorrichtung hoch; insbesondere wird das Gewicht dieser Preßvorrichtung durch den zusätzlichen Hebelmechanismus stark erhöht, so daß die Handhabung beim Preßvorgang erschwert ist.It is known to implement such a pivoting movement via an additional lever mechanism in a straight movement of the pressing parts. As a result, however, the design complexity of such a device is high; In particular, the weight of this pressing device is greatly increased by the additional lever mechanism, so that the handling during the pressing process is difficult.

Bei der gattungsgemäßen Vorrichtung ( US-A-5 272 811 ) werden zwei gegeneinander bewegbare Backen mittels eines Schiebers verschwenkt. Die beiden Backen sind gelenkig mit dem Schieber verbunden, der in Längsrichtung eines Gehäuseteiles verschiebbar ist. Damit der Schieber zur Betätigung der Backen die Schwenkbewegung ausführen kann, ist der Gehäuseteil verhältnismäßig lang. Dadurch ergibt sich jedoch eine ungünstige Gewichtsverteilung der Vorrichtung, die bei der Handhabung zu Problemen führt.In the generic device ( US-A-5,272,811 ) two mutually movable jaws are pivoted by means of a slider. The two jaws are hingedly connected to the slider, which is displaceable in the longitudinal direction of a housing part. Thus, the slide for actuating the jaws can perform the pivoting movement, the housing part is relatively long. However, this results in an unfavorable weight distribution of the device, which leads to problems in handling.

Auch bei anderen bekannten Vorrichtungen ( DE 44 46 503 C , US-A-5 195 354 , US-A-4 494 398 , DE 196 21 877 A ) ist das Antriebselement zur Betätigung der Werkzeuge in Längsrichtung des jeweiligen Gehäuseteiles verschiebbar.Also in other known devices ( DE 44 46 503 C . US-A-5,195,354 . US-A-4 494 398 . DE 196 21 877 A ), the drive element for actuating the tools in the longitudinal direction of the respective housing part is displaceable.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Vorrichtung so auszubilden, daß mit ihr bei konstruktiv einfacher Ausbildung und einfacher Handhabung eine einwandfreie Verpressung gewährleistet ist.The invention has the object of providing the generic device in such a way that with a structurally simple design and ease of handling a perfect compression is guaranteed.

Diese Aufgabe wird bei der gattungsgemäßen Vorrichtung erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruches 1 gelöst.This object is achieved in the generic device according to the invention with the characterizing features of claim 1.

Die Vorrichtung ist als Elektrowerkzeug ausgebildet, bei der das Gehäuse, das Antriebselement für das eine Preßteil und die Preßeinheit hintereinander angeordnet sind. Dadurch ergibt sich eine konstruktiv einfache Ausbildung. Das Antriebselement ist quer zur Längsachse des Gehäuseteiles bewegbar, an den die Preßeinheit angeschlossen ist. Aufgrund dieser Lage der einzelnen Teile kann die erfindungsgemäße Vorrichtung kompakt ausgebildet sein. Insbesondere ist dadurch auch eine optimale Gewichtsverteilung der Vorrichtung möglich, so daß sie während des Preßvorganges mühelos getragen werden kann.The device is designed as a power tool, in which the housing, the drive element for the one pressing part and the pressing unit are arranged one behind the other. This results in a structurally simple training. The drive element is movable transversely to the longitudinal axis of the housing part, to which the pressing unit is connected. Due to this position of the individual parts, the device according to the invention can be made compact. In particular, thereby also an optimal weight distribution of the device is possible, so that it can be easily carried during the pressing process.

Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und den Zeichnungen.Further features of the invention will become apparent from the other claims, the description and the drawings.

Die Erfindung wird anhand dreier in den Zeichnungen dargestellter Ausführungsformen näher erläutert. Es zeigen

Fig. 1
in Seitenansicht eine erfindungsgemäße Vorrichtung zum Verpressen von Werkstücken,
Fig. 2
einen Schnitt durch die erfindungsgemäße Vorrichtung gemäß Fig.1,
Fig. 3
in vergrößerter Darstellung und im Schnitt relativ zueinander bewegliche Preßteile der erfindungsgemäßen Vorrichtung gemäß Fig. 1,
Fig. 4
eine Ansicht in Richtung des Pfeiles IV in Fig. 3,
Fig. 5
im Schnitt einen Teil einer zweiten Ausführungsform einer erfindungsgemäßen Vorrichtung zum Verpressen von Werkstücken,
Fig. 6
im Schnitt einen Teil einer dritten Ausführungsform einer erfindungsgemäßen Vorrichtung zum Verpressen von Werkstücken,
Fig. 7
in vergrößerter Darstellung und in bezug auf die Darstellung gemäß Fig. 6 um 90° verdrehter Lage die Preßeinheit der Vorrichtung gemäß Fig. 6,
Fig. 8
eine Stirnansicht eines Aufweitkopfes der Vorrichtung gemäß Fig. 6.
The invention will be explained in more detail with reference to three embodiments shown in the drawings. Show it
Fig. 1
in side view a device according to the invention for pressing workpieces,
Fig. 2
a section through the device according to the invention according to Fig.1,
Fig. 3
in an enlarged view and in section relative to each other movable pressing parts of the device according to the invention shown in FIG. 1,
Fig. 4
a view in the direction of arrow IV in Fig. 3,
Fig. 5
in section a part of a second embodiment of a device according to the invention for pressing workpieces,
Fig. 6
in section a part of a third embodiment of a device according to the invention for pressing workpieces,
Fig. 7
in an enlarged view and with respect to the illustration of FIG. 6 rotated by 90 ° position the pressing unit of the device according to FIG. 6,
Fig. 8
an end view of a widening head of the device according to FIG. 6.

Mit der im folgenden im einzelnen beschriebenen Vorrichtung, die hauptsächlich im Sanitärbereich eingesetzt wird, werden Rohre, Rohrstücke und dergleichen unlösbar miteinander verbunden. Dabei findet ein plastischer Verformungsvorgang statt, durch den die feste Verbindung hergestellt wird. Je nach Ausbildung der Vorrichtung wird eine radiale oder eine axiale Preßtechnik eingesetzt. Bei der radialen Preßtechnik werden Rohre, Rohrstücke, Fittinge und dergleichen ineinander gesteckt und mit der Vorrichtung im Steckbereich eine radiale Verpressung vorgenommen. Bei der axialen Preßtechnik wird mit der Vorrichtung ein Preßring axial auf dem Rohr, Rohrstück, Fitting und dergleichen verschoben, wodurch über den Preßring eine radiale plastische Verformung stattfindet.With the device described in detail below, which is mainly used in the sanitary sector, pipes, pipe sections and the like are permanently connected to each other. In this case, a plastic deformation process takes place, through which the solid compound is produced. Depending on the design of the device, a radial or an axial pressing technique is used. At the radial Preßtechnik pipes, pipe sections, fittings and the like are inserted into each other and made with the device in the mating area a radial compression. In the axial pressing technique, a pressing ring is displaced axially on the pipe, pipe section, fitting and the like with the device, whereby a radial plastic deformation takes place via the pressing ring.

Bei der Ausführungsform nach den Fig. 1 bis 4 ist die Vorrichtung als tragbares Werkzeug ausgebildet, das bequem von der Bedienungsperson getragen werden kann. Die Vorrichtung hat ein Gehäuse 1, das vorteilhaft aus zwei lösbar miteinander verbundenen Gehäuseschalen besteht. Selbstverständlich kann das Gehäuse 1 auch aus mehr als zwei Gehäuseteilen zusammengesetzt sein. Das Gehäuse 1 ist etwa pistolenförmig ausgebildet und hat einen länglichen Gehäuseteil 2, in dem ein Hydraulikteil 3 (Fig. 2) eines Antriebes 4 untergebracht ist. Unterhalb des Gehäuseteiles 2 befindet sich ein in Achsrichtung längerer Gehäuseteil 5, in dem ein mechanischer Teil 6 des Antriebes 4 untergebracht ist. Vom Gehäuseteil 5 steht quer ein Griffteil 7 ab, der ebenfalls Teil des Gehäuses 1 ist und in dem ein elektrischer/elektronischer Teil 8 des Antriebes 4 liegt. Der Griffteil 7 ist gegenüber dem Gehäuseteil 5 zurückgesetzt. Die Längsachse 9 des Griffteiles 7 liegt unter einem stumpfen Winkel α zur Längsachse 10 des Gehäuseteiles 5. Die Längsachse 10 wiederum liegt parallel zur Längsachse 11 des Gehäuseteiles 2 (Fig. 1). Dem Griffteil 7 ist ein hohler Steg 12 vorgeschaltet, der sich etwa parallel zur Längsachse 9 des Griffteiles erstreckt und Abstand von ihm hat. Dadurch wird zwischen dem Griffteil 7 und dem Steg 12 eine Grifföffnung 13 gebildet. Der Steg 12 und der Griffteil 7 gehen über ein Querstück 14 ineinander über, das ebenfalls als Hohlteil ausgebildet ist.In the embodiment according to FIGS. 1 to 4, the device is designed as a portable tool that can be comfortably carried by the operator. The device has a housing 1, which advantageously consists of two detachably interconnected housing shells. Of course, the housing 1 may also be composed of more than two housing parts. The housing 1 is approximately pistol-shaped and has an elongated housing part 2, in which a hydraulic part 3 (FIG. 2) of a drive 4 is accommodated. Below the housing part 2 is a housing part 5 which is longer in the axial direction and in which a mechanical part 6 of the drive 4 is accommodated. From the housing part 5 is transverse from a handle part 7, which is also part of the housing 1 and in which an electrical / electronic part 8 of the drive 4 is located. The handle part 7 is set back relative to the housing part 5. The longitudinal axis 9 of the handle portion 7 is at an obtuse angle α to the longitudinal axis 10 of the housing part 5. The longitudinal axis 10 in turn is parallel to the longitudinal axis 11 of the housing part 2 (Fig. 1). The handle part 7 is preceded by a hollow web 12 which extends approximately parallel to the longitudinal axis 9 of the handle portion and is spaced therefrom. As a result, a handle opening 13 is formed between the handle part 7 and the web 12. The web 12 and the handle part 7 merge into one another via a crosspiece 14, which is likewise designed as a hollow part.

Beim Preßvorgang wird die Vorrichtung vorzugsweise am Griffteil 7 gehalten, wobei der Benutzer, wie in Fig. 2 durch gestrichelte Kreise angedeutet ist, den Griffteil 7 umfaßt. Die Hand des Benutzer greift somit durch die Grifföffnung 13. Der Steg 12 schützt die Hand des Benutzers während des Preßvorganges. Am Übergang vom Griffteil 7 zum Gehäuseteil 5 ragt aus dem Griffteil 7 in die Grifföffnung 13 ein Schalter 15, der beim Umgreifen des Griffteiles 7 bequem mit dem Zeigefinger gedrückt werden kann, um den Antrieb 4 einzuschalten. Der Schalter 15 kann so ausgebildet sein, daß er während des Preßvorganges ständig gedrückt gehalten werden muß. Sobald der Schalter 15 freigegeben wird, wird der Antrieb 4 abgeschaltet. Es ist aber auch möglich, den Schalter 15 so auszubilden, daß er zum Einschalten des Antriebes gedrückt und zum Ausschalten ein zweites Mal gedrückt werden muß. Diese Ausführungsform hat den Vorteil, daß die Bedienungsperson während des Preßvorganges nicht ständig den Schalter 15 gedrückt halten muß. Insbesondere für diesen Fall kann die Vorrichtung auch so gefaßt werden, daß die Hand den Griffteil 7 und den Steg 12 umgreift, wie in Fig. 2 durch weitere gestrichelte Kreise angedeutet ist. Um in diesem Fall der Hand einen sicheren Halt zu geben, sind der Gehäuseteil 5 sowie ein Teil des Steges 12 auf ihrer vom Griffteil 7 abgewandten Seite mit Griffmulden 16 versehen, so daß die Finger einen sicheren Halt am Gehäuse 1 finden.During the pressing operation, the device is preferably held on the grip part 7, wherein the user, as indicated in Fig. 2 by dashed circles, the grip part 7 comprises. The hand of the user attacks thus through the handle opening 13. The web 12 protects the user's hand during the pressing process. At the transition from the handle part 7 to the housing part 5 protrudes from the handle part 7 in the handle opening 13, a switch 15 which can be easily pressed when gripping the handle part 7 with the index finger to turn on the drive 4. The switch 15 may be formed so that it must be kept pressed during the pressing process. Once the switch 15 is released, the drive 4 is turned off. But it is also possible to form the switch 15 so that it must be pressed to turn on the drive and pressed to turn off a second time. This embodiment has the advantage that the operator does not have to constantly keep the switch 15 pressed during the pressing process. In particular, in this case, the device can also be taken so that the hand surrounds the handle part 7 and the web 12, as indicated in Fig. 2 by further dashed circles. To give the hand a secure hold in this case, the housing part 5 and a part of the web 12 are provided on their side facing away from the handle part 7 with recessed grips 16, so that the fingers find a secure hold on the housing 1.

Das Querstück 14 des Gehäuses 1 kann als Aufnahme für wenigstens einen Akku oder eine Batterie ausgebildet sein. Die Vorrichtung läßt sich aber auch über den Netzstrom betreiben. In diesem Fall ist ein (nicht dargestelltes) Netzkabel aus dem Gehäuse 1, vorzugsweise nach unten aus dem Querstück 14, herausgeführt.The crosspiece 14 of the housing 1 may be formed as a receptacle for at least one battery or a battery. The device can also be operated via the mains. In this case, a (not shown) power cord from the housing 1, preferably down out of the crosspiece 14, led out.

Der elektrisch/elektronische Teil 8 des Antriebes 4 ist platzsparend im schmalen Griffteil 7 untergebracht. Über ihn wird der mechanische Antriebsteil 6 ein- bzw. ausgeschaltet. Dieser Antriebsteil 6 hat einen Elektromotor 17, dessen Achse 18 parallel zur Längsachse 10, vorteilhaft in der Längsachse liegt. Eine aus dem Motorgehäuse 19 ragende Motorwelle 20 ist mit einem nachgeschalteten Untersetzungsgetriebe 21 gekuppelt, das vorteilhaft ein Planetengetriebe ist. Das Untersetzungsgetriebe 21 ist vorteilhaft wenigstens zweistufig ausgebildet. Die bevorzugte Verwendung eines Planetengetriebes als Untersetzungsgetriebe 21 hat den Vorteil, daß es nur wenig Raum bei einem hohen Untersetzungsgrad benötigt. Darum kann das Untersetzungsgetriebe 21 äußerst platzsparend im Gehäuseteil 5 untergebracht werden. Die Längsachse 22 des Untersetzungsgetriebes liegt vorteilhaft fluchtend zur Längsachse 18 des Motors 17.The electrical / electronic part 8 of the drive 4 is space-saving housed in the narrow handle part 7. About him the mechanical drive part 6 is switched on or off. This drive member 6 has an electric motor 17, whose axis 18 is parallel to the longitudinal axis 10, advantageously in the longitudinal axis. A protruding from the motor housing 19 motor shaft 20 is coupled to a downstream reduction gear 21, which is advantageously a planetary gear. The Reduction gear 21 is advantageously formed at least two stages. The preferred use of a planetary gear as a reduction gear 21 has the advantage that it requires little space at a high reduction ratio. Therefore, the reduction gear 21 can be accommodated extremely space-saving in the housing part 5. The longitudinal axis 22 of the reduction gear is advantageously in alignment with the longitudinal axis 18 of the motor 17th

Eine Abtriebswelle 23 des Untersetzungsgetriebes 21 trägt außerhalb eines Gehäuses 25 des Untersetzungsgetriebes 21 ein Exzenterstück 24, auf dem unmittelbar oder unter Zwischenlage eines Zwischenringes ein elliptischer Ring 26 gelagert ist. Die Längsachse dieses elliptischen Ringes 26 erstreckt sich senkrecht zur Achse der Abtriebswelle 23 bzw. senkrecht zur Zeichenebene, während die kleine Achse in der Zeichenebene gemäß Fig. 2 liegt. Das Exzenterstück 24 oder der auf ihm sitzende runde Ring liegt an der Innenwand der senkrecht zur Zeichenebene verlaufenden Abschnitte des Ringes 26 an. Wird die Abtriebswelle 23 um ihre Achse gedreht, wird über das Exzenterstück 24 der Ring 26 in Richtung des Doppelpfeiles 27 in Fig. 2 in der Zeichenebene auf- und abbewegt. Ein solcher Exzenterantrieb ist bekannt und wird darum auch nicht näher beschrieben.An output shaft 23 of the reduction gear 21 carries outside of a housing 25 of the reduction gear 21 an eccentric 24, on which an elliptical ring 26 is mounted directly or with the interposition of an intermediate ring. The longitudinal axis of this elliptical ring 26 extends perpendicular to the axis of the output shaft 23 and perpendicular to the plane of the drawing, while the minor axis lies in the plane of the drawing of FIG. The eccentric 24 or sitting on it round ring abuts against the inner wall of the plane perpendicular to the plane extending portions of the ring 26. If the output shaft 23 is rotated about its axis, the ring 26 is moved up and down via the eccentric piece 24 in the direction of the double arrow 27 in FIG. 2 in the drawing plane. Such an eccentric drive is known and is therefore not described in detail.

Der elliptische Ring 26 trägt einen Kolben 28, der vorteilhaft einstükkig mit dem Ring 26 ausgebildet ist, aber auch an ihm befestigt sein kann. Der Kolben 28 ragt mit allseitigem Spiel aus einem dem Exzenterantrieb 23, 24, 26 aufnehmenden Gehäuse 30 in einen Kolbenraum 31, der vorteilhaft durch eine Bohrung in einem Hydraulikblock 32 gebildet ist. Er ist im Gehäuseteil 2 des Gehäuses 1 untergebracht und auf dem Gehäuse 30 des Exzenterantriebes 23, 24, 26 abgestützt und auf ihm befestigt. An einem Ende des Hydraulikblockes 32 ist ein Speicher 33 für Hydraulikmedium, vorzugsweise Hydrauliköl, vorgesehen. In dem dem Hydraulikblock 32 gegenüberliegenden Boden 34 des Speichers 33 befindet sich eine verschließbare Befüllöffnung 35, über die das Hydraulikmedium in den Speicher 33 eingebracht werden kann. In den Speicher 33 ragt ein Rückschlagventil 36, das eine senkrecht zum Kolbenraum 31 liegende Bohrung 37 gegen den Speicher 33 verschließt. Die kleineren Durchflußquerschnitt als der Kolben 31 aufweisende Bohrung 37 mündet in den Kolbenraum 31 an dem vom Exzenterantrieb 23, 24, 26 abgewandten Ende. In diesem Bereich mündet in den Kolbenraum 31 eine Zuführbohrung 38, die ebenfalls im Hydraulikblock 32 vorgesehen ist und sich senkrecht zum Kolbenraum 28 sowie vorteilhaft fluchtend zur Bohrung 37 erstreckt. Über die Zuführbohrung 38 wird in noch zu beschreibender Weise das Hydraulikmedium zur Betätigung eines Preßteiles 39 zugeführt.The elliptical ring 26 carries a piston 28 which is advantageously integrally formed with the ring 26, but may also be attached to it. The piston 28 projects with all-round play from a the eccentric drive 23, 24, 26 receiving housing 30 in a piston chamber 31, which is advantageously formed by a bore in a hydraulic block 32. It is housed in the housing part 2 of the housing 1 and supported on the housing 30 of the eccentric drive 23, 24, 26 and fixed on it. At one end of the hydraulic block 32, a reservoir 33 for hydraulic medium, preferably hydraulic oil, is provided. In which the hydraulic block 32 opposite bottom 34 of the memory 33 is a closable filling opening 35, via which the hydraulic medium can be introduced into the memory 33. In the memory 33 projects a check valve 36 which closes a perpendicular to the piston chamber 31 bore 37 against the memory 33. The smaller flow area than the piston 31 having bore 37 opens into the piston chamber 31 at the end facing away from the eccentric 23, 24, 26 end. In this area opens into the piston chamber 31, a feed bore 38, which is also provided in the hydraulic block 32 and extends perpendicular to the piston chamber 28 and advantageously in alignment with the bore 37. About the supply hole 38, the hydraulic medium for actuating a pressing member 39 is supplied in a manner to be described.

Die Längsachse 85 des Hydraulikblockes 32 liegt vorteilhaft in der Längsachse 11 des Gehäuseteiles 2. Die beiden Bohrungen 37, 38 im Hydraulikblock 32 liegen vorteilhaft auf der vom Untersetzungsgetriebe 21 abgewandten Seite der Längsachse 39 des Hydraulikblokkes 32. Der Kolbenraum 31 liegt im dargestellten Ausführungsbeispiel in einer Quermittelebene des Hydraulikblockes 32. Der Kolben 28 ist abgedichtet im Kolbenraum 31 geführt und dient dazu, durch hin- und hergehende Bewegungen das Hydraulikmedium aus dem Speicher 33 anzusaugen und über die Zuführbohrung 38 der Preßeinheit 40 zuzuführen.The longitudinal axis 85 of the hydraulic block 32 is advantageously in the longitudinal axis 11 of the housing part 2. The two holes 37, 38 in the hydraulic block 32 are advantageously on the side facing away from the reduction gear 21 side of the longitudinal axis 39 of Hydraulikblokkes 32nd The piston chamber 31 is in the illustrated embodiment in a Transverse median plane of the hydraulic block 32. The piston 28 is sealed out in the piston chamber 31 and serves to suck by reciprocating movements, the hydraulic medium from the memory 33 and supply via the feed bore 38 of the pressing unit 40.

Der Hydraulikblock 32 hat, wie Fig. 3 zeigt, an dem vom Speicher 33 abgewandten Ende eine Vertiefung 41, in die die Preßeinheit 40 mit einem Ansatz 42 eingesetzt ist. Die Preßeinheit 40 ist durch Gewindestifte 43 in der Vertiefung 41 des Hydraulikblockes 42 lösbar befestigt. Der Ansatz 42 wird axial von einer Bohrung 44 durchsetzt, die bei montierter Preßeinheit 40 über eine Ringnut 87 in Strömungsverbindung mit der Zuführungsbohrung 38 des Hydraulikblockes 32 ist. Der Ansatz 42 ist durch wenigstens eine Ringdichtung 45 gegenüber der Innenwandung der Vertiefung 41 des Hydraulikblockes 32 abgedichtet, so daß das Hydraulikmedium nicht aus der Vertiefung 41 des Hydraulikblockes 32 nach außen treten kann.The hydraulic block 32 has, as FIG. 3 shows, at the end facing away from the memory 33 a recess 41 into which the pressing unit 40 is inserted with a projection 42. The pressing unit 40 is releasably secured by threaded pins 43 in the recess 41 of the hydraulic block 42. The projection 42 is axially penetrated by a bore 44 which is connected to the pressing unit 40 via an annular groove 87 in flow communication with the supply bore 38 of the hydraulic block 32. The projection 42 is sealed by at least one annular seal 45 with respect to the inner wall of the recess 41 of the hydraulic block 32, so that the hydraulic medium can not escape from the recess 41 of the hydraulic block 32 to the outside.

Der Ansatz 42 steht von einem Boden 46 der Preßeinheit 40 zentrisch ab. Der Boden 46 ist plattenförmig ausgebildet und erstreckt sich in einer senkrecht zur Längsachse 85 des Hydraulikblockes 32 liegenden Ebene. An seinem vom Griffteil 7 bzw. vom Steg 12 abgewandten Ende ist der Boden 46 mit einer senkrecht an ihn anschließenden Wand 47 verbunden, vorzugsweise einstückig mit ihr ausgebildet. Sie verbindet den Boden 46 mit einer parallel zu ihm liegenden Wand 48, die ebenfalls vorteilhaft einstückig mit der Wand 47 ausgebildet ist. Der Boden 46 und die beiden Wände 47, 48 sind an ihren oberhalb und unterhalb der Zeichenebene gemäß Fig. 3 liegenden Enden durch weitere Wände geschlossen. Sämtliche Wände sind einstückig ausgebildet und begrenzen einen zentrisch liegenden Zylinderraum 49 (Fig. 3 und 4), in dem ein Kolben 50 abgedichtet verschiebbar ist. Der Boden 46, die Wände 47, 48 sowie die diese verbindenden weiteren Wände bilden somit ein Gehäuse 51, in dem der Zylinderraum 49 vorgesehen ist. Das Gehäuse 51 hat, wie sich aus Fig. 4 ergibt, rechteckigen, insbesondere quadratischen Umriß, in Richtung der Achse 52 des Kolbens 50 gesehen. Das Gehäuse 51 trägt auf der vom Gehäuse 1 abgewandten Seite ein unbewegliches Preßteil 53, das dem anderen Preßteil 39 gegenüberliegt. Die beiden Preßteile 39, 53 sind gleich ausgebildet, jedoch spiegelsymmetrisch zueinander angeordnet. Darum wird im folgenden nur das Preßteil 39 anhand von Fig. 4 näher erläutert.The approach 42 is centered from a bottom 46 of the pressing unit 40. The bottom 46 is plate-shaped and extends in a plane perpendicular to the longitudinal axis 85 of the hydraulic block 32 level. At its end facing away from the handle part 7 or from the web 12, the bottom 46 is connected to a wall 47 which adjoins it perpendicularly, preferably in one piece with it. It connects the bottom 46 with a parallel to him wall 48, which is also advantageously integrally formed with the wall 47. The bottom 46 and the two walls 47, 48 are closed at their above and below the plane of FIG. 3 lying ends by further walls. All walls are integrally formed and define a centrally located cylinder chamber 49 (FIGS. 3 and 4), in which a piston 50 is displaceable sealed. The bottom 46, the walls 47, 48 and connecting them further walls thus form a housing 51 in which the cylinder chamber 49 is provided. The housing 51 has, as is apparent from Fig. 4, rectangular, in particular square outline seen in the direction of the axis 52 of the piston 50. The housing 51 carries on the side facing away from the housing 1 side of a stationary pressing member 53 which is opposite to the other pressing member 39. The two pressing parts 39, 53 are the same design, but arranged mirror-symmetrically to each other. Therefore, in the following, only the pressing member 39 will be explained with reference to FIG. 4.

Das Preßteil 39 ist bügelförmig ausgebildet und weist eine etwa halbzylindrische Aufnahme 54 für das zu verpressende Werkstück auf. Die Aufnahme 54 wird von einem in Ansicht gemäß Fig. 4 etwa halbkreisförmigen Bügel 55 begrenzt, von dem zwei zueinander parallele Schenkel 56, 57 abstehen, die durch einen Querbolzen 58 miteinander verbunden sind.The pressing member 39 is formed bow-shaped and has an approximately semi-cylindrical receptacle 54 for the workpiece to be pressed. The receptacle 54 is bounded by a in view of FIG. 4 approximately semicircular bracket 55, projecting from the two mutually parallel legs 56, 57, which are interconnected by a transverse pin 58.

Die beiden Schenkel 56, 57 sind über den Querbolzen 58 mit einem Schlitten 59 verbunden, der in Draufsicht gemäß Fig. 4 U-Form hat. Er liegt mit flachen Schenkeln 60, 61 an zueinander parallelen Außenseiten 62, 63 des Gehäuses 51 flächig an. Die Außenseiten 62, 63 sind mit einem nach außen gerichteten Absatz 64, 65 versehen, denen entsprechende Absätze 66, 67 an den Innenseiten der Schenkel 60, 61 des Schlittens 59 zugeordnet sind. Die Absätze 64, 65; 66, 67 erstrecken sich über die Länge der Außenseiten 62, 63 bzw. der Schenkel 60, 61. Durch die Absätze ist sichergestellt, daß der Schlitten 59 nicht quer zu den Absätzen vom Gehäuse 51 abgezogen werden kann.The two legs 56, 57 are connected via the transverse pin 58 with a carriage 59 which has a U-shape in plan view according to FIG. It is flat with flat legs 60, 61 at mutually parallel outer sides 62, 63 of the housing 51 at. The outer sides 62, 63 are provided with an outwardly directed shoulder 64, 65, which corresponding paragraphs 66, 67 on the inner sides of the legs 60, 61 of the carriage 59 are assigned. Paragraphs 64, 65; 66, 67 extend over the length of the outer sides 62, 63 and the legs 60, 61. The paragraphs ensures that the carriage 59 can not be withdrawn from the housing 51 transversely to the paragraphs.

Der die beiden Schenkel 60, 61 verbindende Steg 68 des Schlittens 59 liegt an der Wand 48 des Gehäuses 51 an. In halber Breite steht vom Steg 68 ein Ansatz 69 auf der vom Gehäuse 51 abgewandten Seite ab, der zwischen die beiden Schenkel 56, 57 des Preßteiles 39 eingreift und der vom Querbolzen 58 durchsetzt ist. Die Schenkel 56, 57 liegen an den Außenseiten des Ansatzes 69 an. Außerdem liegen die Stirnseiten 70, 71 der beiden Schenkel 56, 57 am Steg 68 des Schlittens 59 an. Dadurch ist ein Verkippen oder Verkanten des Preßteiles 39 gegenüber dem Schlitten 59 ausgeschlossen.The web 68 connecting the two legs 60, 61 of the carriage 59 bears against the wall 48 of the housing 51. At half the width of the web 68 is a projection 69 on the side facing away from the housing 51 side, which engages between the two legs 56, 57 of the pressing member 39 and is penetrated by the transverse pin 58. The legs 56, 57 abut against the outer sides of the projection 69. In addition, the end faces 70, 71 of the two legs 56, 57 bear against the web 68 of the carriage 59. As a result, tilting or tilting of the pressing member 39 relative to the carriage 59 is excluded.

Die beiden Schenkel 60, 61 des Schlittens 59 erstrecken sich nahezu über die gesamte Länge des Gehäuses 51. Es ist an seiner der Wand 47 gegenüberliegenden Seite offen. Sie wird durch einen plattenförmigen Träger 72 (Fig. 3) geschlossen, der die freien Enden der Schenkel 60, 61 miteinander verbindet und auf dem der Kolben 50 befestigt ist. Er ist aus Gewichtsgründen als Hohlkörper ausgebildet, der an einem Ende durch den Träger 72 geschlossen wird. Die Wände 46, 62, 63 des Gehäuses 51 begrenzen mit ihren freien Enden eine Vertiefung 73, in die der Träger 72 bei eingefahrenem Kolben 50 eingreift (Fig. 3). In dieser Stellung schlägt der Träger 72 am Boden 74 der Vertiefung 73 an. Die gegenüberliegende, durch das Hydraulikmedium beaufschlagbare Kolbenfläche 75 hat in dieser Stellung noch Abstand vom Boden 76 des Zylinderraumes 49. Dadurch ist gewährleistet, daß das Hydraulikmedium auch bei vollständig eingefahrenem Kolben 50 an die Kolbenfläche 75 gelangen kann.The two legs 60, 61 of the carriage 59 extend almost over the entire length of the housing 51. It is open on its side 47 opposite the wall. It is closed by a plate-shaped support 72 (FIG. 3) which connects the free ends of the legs 60, 61 to each other and on which the piston 50 is fastened. It is designed for weight reasons as a hollow body which is closed at one end by the carrier 72. The walls 46, 62, 63 of the housing 51 define with their free ends a recess 73 into which the carrier 72 engages when the piston 50 is retracted (FIG. 3). In this position, the carrier 72 hits the ground 74 of the recess 73 at. The opposite, acted upon by the hydraulic medium piston surface 75 in this position still distance from the bottom 76 of the cylinder chamber 49. This ensures that the hydraulic medium can reach the piston surface 75 even with fully retracted piston 50.

Der Ansatz 69 des Schlittens 59 erstreckt sich, wie Fig. 3 zeigt, nur über einen Teil der Höhe des Gehäuses 51. Fig. 3 zeigt die Ausgangslage des Preßteiles 39, in der es den größten Abstand vom gegenüberliegenden Preßteil 53 hat, das im Unterschied zum Preßteil 39 starr, vorzugsweise einstückig mit dem Kolbengehäuse 51 ausgebildet ist. Beim Preßvorgang wird das Preßteil 39 gegen das Preßteil 53 bewegt. Der Schlitten 59 sorgt für eine einwandfreie, insbesondere verkantungsfreie Führung des Preßteiles 39 am Kolbengehäuse 51.The projection 69 of the carriage 59 extends, as shown in FIG. 3, only over a part of the height of the housing 51. Fig. 3 shows the initial position of the pressing member 39, in which it has the greatest distance from the opposite pressing member 53, the difference to the pressing member 39 rigid, preferably integrally formed with the piston housing 51. During the pressing operation, the pressing member 39 is moved against the pressing member 53. The carriage 59 ensures a perfect, in particular tilt-free guidance of the pressing member 39 on the piston housing 51st

Die beiden Bügel 55 der Preßteile 39, 53 sind auf ihren voneinander abgewandten Seiten mit einer Versteifung 78, 79 versehen, die sich nahezu über den gesamten Umfang der Bügel 55 erstreckt und die von den Bügelenden aus in Richtung auf den Ansatz 69 stetig zunimmt. Dadurch haben die Versteifungen 78, 79, senkrecht zur Verschieberichtung des Preßteiles 39 gesehen (Fig. 3) dreieckförmigen Umriß. Aufgrund dieser Versteifungen 78, 79 können sehr hohe Preßkräfte aufgebracht werden, ohne daß die Gefahr besteht, daß die Bügel 55 der Preßteile 39, 53 unzulässig verformt werden.The two brackets 55 of the pressing parts 39, 53 are provided on their sides facing away from each other with a stiffener 78, 79 which extends almost over the entire circumference of the bracket 55 and steadily increases from the strap ends in the direction of the neck 69. As a result, the stiffeners 78, 79, seen perpendicular to the direction of displacement of the pressing member 39 (FIG. 3) have a triangular outline. Because of these stiffeners 78, 79 very high compressive forces can be applied without the risk that the bracket 55 of the pressing parts 39, 53 are deformed unduly.

Um das Hydraulikmedium in den Zylinderraum 49 zu leiten, erstreckt sich die Bohrung 44 (Fig. 3) bis in die Wand 46 des Kolbengehäuses 51. An das in dieser Wand 46 liegende Ende der Bohrung 44 schließt senkrecht eine in der Wand 46 verlaufende Bohrung 80, die bis zur Außenseite der Wand 47 des Kolbengehäuses 51 verläuft. Die Bohrung 80 läßt sich auf diese Weise einfach im Kolbengehäuse 51 herstellen. Die Bohrung 80 ist zur Außenseite der Wand 47 geschlossen.To direct the hydraulic medium into the cylinder chamber 49, the bore 44 extends (Fig. 3) into the wall 46 of the piston housing 51. At the end lying in this wall 46 of the bore 44 closes perpendicularly extending in the wall 46 bore 80th which extends to the outside of the wall 47 of the piston housing 51. The bore 80 can be easily produced in the piston housing 51 in this way. The bore 80 is closed to the outside of the wall 47.

Die Verbindung von der Bohrung in den Zylinderraum 49 erfolgt durch eine weitere Bohrung 81, die von der Außenseite der Wand 46 des Kolbengehäuses 51 bis in den Zylinderraum 49 wirkt. Somit läßt sich auch diese Bohrung 81 durch einen einfachen Fertigungsvorgang herstellen. Gegen die Außenseite der Gehäusewand 46 ist die Bohrung 81, welche die senkrecht zu ihr liegende Bohrung kreuzt, geschlossen.The connection from the bore into the cylinder chamber 49 is made by a further bore 81, which acts from the outside of the wall 46 of the piston housing 51 into the cylinder chamber 49. Thus, this bore 81 can be produced by a simple manufacturing process. Against the outside of the housing wall 46, the bore 81, which intersects the hole lying perpendicular to her, closed.

Die Preßeinheit 40 läßt sich um die Achse 82 ihres Ansatzes 42 drehen. Hierzu ist der zylindrische Ansatz 42 an seiner Außenseite mit einer Ringnut 83 versehen, in welche die Gewindestifte 43 eingreifen. Dadurch ist die Preßeinheit 40 gegen Abheben vom Gehäuse 1 gesichert, läßt sich aber stufenlos um die Achse 82 drehen. Dies hat den Vorteil, daß die Preßteile 39, 53 für den Preßvorgang in die jeweils optimale Lage gebracht werden können.The pressing unit 40 can be rotated about the axis 82 of its neck 42. For this purpose, the cylindrical projection 42 is provided on its outer side with an annular groove 83 into which the threaded pins 43 engage. As a result, the pressing unit 40 is secured against lifting from the housing 1, but can be infinitely rotated about the axis 82. This has the advantage that the pressing parts 39, 53 can be brought into the respective optimum position for the pressing process.

Zu Beginn des Preßvorganges befindet sich das Preßteil 39 vorteilhaft in seiner in den Fig. 2 und 3 dargestellten Ausgangslage. Die beiden Bügel 55 der Preßteile 39, 53 liegen parallel zueinander. Mit der Preßeinheit 40 wird eine axiale Preßtechnik durchgeführt, die an sich bekannt ist. Hierbei wird beispielsweise ein Preßring und ein Quetschring über ein Rohr geschoben, in das eine Stützhülse gesteckt wird. Der Preßring wird nun mit Hilfe der Preßeinheit 40 axial über den Quetschring bis zu einem Anschlag an die Stützhülse (Fitting) gepreßt. Bei diesem axialen Verschieben des Preßringes erfolgt eine radiale Verpressung. Das Rohr wird so in die beiden Preßteile 39, 53 eingelegt, daß der zu verschiebende Preßring zwischen den beiden Preßteilen 39, 53 angeordnet ist und mit einem Ende am Preßteil 39 anliegt. Wenn das Preßteil 39 in Richtung auf das Preßteil 53 verschoben wird, nimmt die Gabel 55 des Preßteiles 39 den Preßring mit und verschiebt ihn über den auf dem Rohr befindlichen Quetschring, bis der Preßring an der Stützhülse zur Anlage kommt.At the beginning of the pressing operation, the pressing member 39 is advantageously in its starting position shown in FIGS. 2 and 3. The two brackets 55 of the pressing parts 39, 53 are parallel to each other. With the pressing unit 40, an axial pressing technique is carried out, which is known per se. Here, for example, a pressing ring and a squeezing ring is pushed over a tube into which a support sleeve is inserted. The press ring is now pressed by means of the pressing unit 40 axially over the crimp ring to a stop on the support sleeve (fitting). In this axial displacement of the pressing ring is a radial compression. The tube is inserted into the two pressing parts 39, 53, that the pressing ring to be displaced between the two pressing parts 39, 53 is arranged and bears with one end on the pressing part 39. When the pressing member 39 is displaced in the direction of the pressing member 53, the fork 55 of the pressing member 39 takes with the press ring and moves it over the squeeze ring located on the tube until the press ring comes to rest on the support sleeve.

Die Stützhülse stützte sich hierbei axial an der Gabel 55 des Preßteiles 53 ab.The support sleeve was supported axially on the fork 55 of the pressing member 53 from.

Um das Preßteil 39 zu verschieben, wird mit dem Schalter 15 der Motor 17 eingeschaltet. Die hohe Drehzahl der Motorwelle 20 wird durch das Untersetzungsgetriebe 21 in eine entsprechend niedrige Drehzahl der Antriebswelle 23 des Untersetzungsgetriebes 21 umgesetzt. Das auf der Abtriebswelle 23 sitzende Exzenterstück 24 führt hierbei eine Exzenterbewegung aus. Der elliptische Ring 26 wird hierbei in Pfeilrichtung 27 (Fig. 2) auf- und abbewegt, wodurch der Kolben 28 im Kolbenraum 31 des Hydraulikblockes 32 entsprechend auf und abbewegt wird. Bewegt sich der Kolben 29 aus der Stellung gemäß Fig. 2 nach unten, saugt er über das Rückschlagventil 36 und die Bohrung 37 Hydraulikmedium aus dem Speicher 33 an. Wird der Kolben 28 wieder nach oben verschoben, wird das Hydraulikmedium, das sich in der Bohrung 37 sowie im Kolbenraum 31 befindet, unter Druck gesetzt und über die Bohrungen 38, 44, 80, 81 in den Zylinderraum 49 gefördert. Der Kolben 50 wird hierbei unter Druck gesetzt, so daß er aus der Stellung gemäß den Fig. 2 und 3 nach unten bewegt wird. Über den Träger 72 und dem mit ihm verbundenen Schlitten 59 wird das Preßteil 39 in Richtung auf das gegenüberliegende Preßteil 53 bewegt. Die Gabel 55 des Preßteiles 39 nimmt den Preßring mit und verschiebt ihn über den Quetschring. Der im Hydraulikblock 32 befindliche Kolben 28 wird durch das Drehen des Exzenterstückes 24 ständig auf und ab bewegt, wobei er in der beschriebenen Weise jeweils das Hydraulikmedium in den Zylinderraum 49 fördert und den darin befindlichen Kolben 50 stetig nach unten verschiebt. Sobald der Preßring am Anschlag der Stützhülse zur Anlage kommt, wird der Motor 17 vorteilhaft automatisch abgeschaltet. Der Abschaltzeitpunkt läßt sich einfach dadurch feststellen, daß in der Anschlagstellung des Preßringes an der Stützhülse der zum weiteren Verschieben des Preßteiles 39 erforderliche Druck sprunghaft ansteigt, so daß dieser Druckanstieg erfaßt und zum Abschalten des Motors 17 herangezogen wird. Gleichzeitig wird durch den Druckanstieg ein (nicht dargestelltes) Druckbegrenzungsventil geöffnet, so daß das Hydraulikmedium aus dem Kolbenraum 49 über eine (nicht dargestellte) Rückführbohrung zum Speicher 33 zurückströmt. Dieser Rückströmvorgang wird dadurch ausgelöst, daß der Kolben 50 durch Federkraft in seine Ausgangslage gemäß Fig. 3 zurückgeschoben wird. Fig. 4 zeigt zwei Druckfedern 88, 89, die teilweise im Gehäuse 51 untergebracht sind und sich an den Schenkeln 60, 61 des Schlittens 59 abstützen. Das Rohr läßt sich ohne weiteres senkrecht zur Bewegungsrichtung des Preßteiles 39 aus der Preßeinheit 40 herausnehmen.To move the pressing member 39, the motor 17 is turned on with the switch 15. The high speed of the motor shaft 20 is converted by the reduction gear 21 in a correspondingly low speed of the drive shaft 23 of the reduction gear 21. The seated on the output shaft 23 eccentric 24 performs an eccentric movement. The elliptical ring 26 is thereby moved up and down in the direction of arrow 27 (FIG. 2), whereby the piston 28 is moved up and down in the piston chamber 31 of the hydraulic block 32 accordingly. If the piston 29 moves downwards from the position according to FIG. 2, it sucks in hydraulic medium from the reservoir 33 via the check valve 36 and the bore 37. If the piston 28 is displaced upward again, the hydraulic medium, which is located in the bore 37 and in the piston chamber 31, is pressurized and conveyed via the bores 38, 44, 80, 81 into the cylinder chamber 49. The piston 50 is thereby pressurized, so that it is moved from the position shown in FIGS. 2 and 3 down. About the carrier 72 and the carriage 59 connected to it, the pressing member 39 is moved in the direction of the opposite pressing member 53. The fork 55 of the pressing member 39 takes the press ring and moves it over the squeezing ring. The piston 28 located in the hydraulic block 32 is constantly moved up and down by the rotation of the eccentric piece 24, in each case conveying the hydraulic medium into the cylinder space 49 in the manner described and displacing the piston 50 therein continuously downwards. As soon as the press ring comes to rest against the stop of the support sleeve, the motor 17 is advantageously automatically switched off. The shutdown can be easily determined by the fact that in the stop position of the press ring on the support sleeve of the further displacement of the pressing member 39 required pressure increases sharply, so that this pressure rise detected and to shutdown the engine 17 is used. At the same time (not shown) pressure relief valve is opened by the increase in pressure, so that the hydraulic medium flows back from the piston chamber 49 via a (not shown) return bore to the memory 33. This Rückströmvorgang is triggered by the fact that the piston 50 is pushed back by spring force into its initial position shown in FIG. Fig. 4 shows two compression springs 88, 89, which are partially housed in the housing 51 and are supported on the legs 60, 61 of the carriage 59. The tube can be easily removed from the pressing unit 40 perpendicular to the direction of movement of the pressing member 39.

Die beschriebene Vorrichtung ist äußerst kompakt und vor allen Dingen gewichtsmäßig leicht ausgebildet. Das Gehäuse 1 mit dem darin untergebrachten Antrieb, der Kolben 50 und das Preßteil 39 liegen, quer zur Bewegungsrichtung des Preßteiles 39 gesehen, hintereinander. Dadurch ergibt sich eine kompakte Ausbildung und insbesondere eine optimale Gewichtsverteilung der Vorrichtung. Sie ist nicht kopflastig ausgebildet, so daß sie vom Benutzer während des Preßvorganges und auch danach bequem gehalten werden kann. Die Vorrichtung gewährleistet eine einfache Handhabung.The device described is extremely compact and, above all, lightweight in weight. The housing 1 with the drive housed therein, the piston 50 and the pressing member 39 are, viewed transversely to the direction of movement of the pressing member 39, one behind the other. This results in a compact design and in particular an optimal weight distribution of the device. It is not designed top-heavy, so that it can be kept comfortable by the user during the pressing process and also thereafter. The device ensures easy handling.

Ein wesentliches Merkmal dieser Vorrichtung ist auch darin zu sehen, daß die Achse 82 des Ansatzes 42, der ein Kupplungsstück der Preßeinheit 40 bildet, durch den maximalen Verstellbereich 84 (Fig. 3) des Preßteiles 39 verläuft. Die beiden Preßteile 39, 53 liegen dadurch zumindest teilweise beiderseits der Achse 82 des Ansatzes 42, wodurch sich eine hervorragende Gewichtsverteilung ergibt.An essential feature of this device is also to be seen in that the axis 82 of the projection 42, which forms a coupling piece of the pressing unit 40, by the maximum adjustment range 84 (Fig. 3) of the pressing member 39 extends. The two pressing parts 39, 53 are thereby at least partially on both sides of the axis 82 of the projection 42, resulting in an excellent weight distribution.

Das Kupplungsstück in Form des Ansatzes 42 gewährleistet eine optimale Verbindung zum Hydraulikblock 32, zumal im Ansatz 42 die Bohrung 44 vorgesehen ist, die nach dem Kupplungsvorgang mit der im Hydraulikblock 32 vorgesehenen Bohrung 38 über die Ringnut 87 in Leitungsverbindung gelangt. Es sind darum keine Schläuche oder Rohre als Verbindungsstücke notwendig, um das Hydraulikmedium vom Speicher 33 zur Preßeinheit 40 zu fördern. Vielmehr erfolgt die Förderung des Hydraulikmediums über ausschließlich innerhalb der Vorrichtung vorgesehene Bohrungen, so daß auch das Problem der Leckagen zumindest verringert ist. Da die Vorrichtung keine außenliegenden Schläuche und dergleichen aufweist, wird der Preßvorgang erheblich vereinfacht, da der Benutzer nicht auf umherliegende Verbindungsschläuche achten muß.The coupling piece in the form of the projection 42 ensures optimum connection to the hydraulic block 32, especially in the neck 42, the bore 44 is provided, which after the coupling operation with the provided in the hydraulic block 32 bore 38 via the annular groove 87th gets in line connection. There are therefore no hoses or pipes as connectors necessary to promote the hydraulic medium from the memory 33 to the pressing unit 40. Rather, the promotion of the hydraulic medium via provided exclusively within the device bores, so that the problem of leaks is at least reduced. Since the device has no external hoses and the like, the pressing process is considerably simplified, since the user does not have to pay attention to lying around connecting hoses.

Der Kolben 50 liegt quer zur Achse 82 des Ansatzes 42. Auch diese Lage ergibt eine hervorragende Gewichtsverteilung, die zu einer optimalen Handhabung der Vorrichtung führt.The piston 50 is transverse to the axis 82 of the neck 42. Also, this position results in an excellent weight distribution, which leads to an optimal handling of the device.

Da die Preßeinheit 40 drehbar ist, kann sie an Ort und Stelle an die zu verpressenden Teile durch entsprechende Drehbewegung angepaßt werden. So können mit der Preßeinheit 40 auch bereits montierte Rohre und dergleichen gepreßt werden, wobei in solchen Fällen die Preßeinheit 40 einfach an die Lage der montierten Rohre und dergleichen angepaßt werden kann.Since the pressing unit 40 is rotatable, it can be adapted in place to the parts to be pressed by appropriate rotational movement. Thus, with the pressing unit 40 also already mounted pipes and the like can be pressed, in which case the pressing unit 40 can be easily adapted to the position of the mounted pipes and the like.

Ein wesentliches Merkmal der Vorrichtung ist darin zu sehen, daß die Preßeinheit 40 um die Achse 82 des Ansatzes 42 drehbar ist. Vorteilhaft liegt die Achse 82 zumindest annähernd in einer Symmetrieebene der Preßeinheit 40, bezogen auf die in Fig. 3 dargestellte Ausgangsstellung des Preßteiles 39. Dadurch ändert sich die Gewichtsverteilung beim Drehen der Preßeinheit 40 nicht oder nur unwesentlich. Darum kann die Vorrichtung in jeder Lage der Preßeinheit 40 optimal gehalten werden.An essential feature of the device is the fact that the pressing unit 40 is rotatable about the axis 82 of the projection 42. Advantageously, the axis 82 is at least approximately in a plane of symmetry of the pressing unit 40, based on the initial position of the pressing member 39 shown in FIG. 3. As a result, the weight distribution when rotating the pressing unit 40 does not change or only insignificantly. Therefore, the device can be optimally held in any position of the pressing unit 40.

Die Achse 82 des Ansatzes 42 liegt bevorzugt in der Achse 85 des Hydraulikblockes 32, die ihrerseits vorteilhaft mit der Längsachse 11 des Gehäuseteiles 2 zusammenhält. Hierdurch wird eine hervorragende Gewichtsverteilung erreicht, die zur einfachen Handhabung der Vorrichtung beim Preßvorgang führt.The axis 82 of the projection 42 is preferably in the axis 85 of the hydraulic block 32, which in turn advantageously holds together with the longitudinal axis 11 of the housing part 2. This will be an excellent Weight distribution achieved, which leads to easy handling of the device during the pressing process.

Fig. 5 zeigt eine Ausführungsform, bei der mit den Preßteilen der Preßeinheit eine radiale Verpressung vorgenommen wird. In diesem Falle sind die beiden Preßteile 39, 53 der Preßeinheit 40, bezogen auf die vorige Ausführungsform, um 90° verdreht zueinander vorgesehen, so daß die Aufnahmen 54 ihrer beiden Gabeln 55 gegeneinander gerichtet sind. Fig. 5 zeigt die Endstellung des Preßteiles 39, in der seine Gabel an der Gabel 55 des vorrichtungsfesten Preßteiles 53 anliegt. Das Preßteil 39 ist entsprechend der vorherigen Ausführungsform fest mit dem Schlitten verbunden, von dem in Fig. 5 der Träger 72 zu erkennen ist, der den Kolben 50 trägt. Im übrigen ist diese Vorrichtung gleich ausgebildet wie die vorige Ausführungsform.Fig. 5 shows an embodiment in which a radial compression is performed with the pressing parts of the pressing unit. In this case, the two pressing parts 39, 53 of the pressing unit 40, based on the previous embodiment, rotated by 90 ° provided to each other, so that the receptacles 54 of their two forks 55 are directed against each other. Fig. 5 shows the end position of the pressing member 39, in which its fork rests against the fork 55 of the device fixed pressing member 53. The pressing member 39 is fixedly connected to the carriage according to the previous embodiment, from which in Fig. 5, the carrier 72 can be seen, which carries the piston 50. Moreover, this device is the same design as the previous embodiment.

Zum radialen Verpressen wird in die Aufnahme 54 des Preßteiles 53 das entsprechende Rohr oder Rohrstück gelegt. Der Kolben 50 ist zu Beginn des Preßvorganges eingefahren, so daß das Preßteil 39 mit entsprechendem Abstand vom Preßteil 53 liegt. Wie anhand des vorigen Ausführungsbeispieles im einzelnen erläutert worden ist, wird der im Hydraulikblock 32 befindliche Kolben 28 ständig hin- und herbewegt, wobei er das Hydraulikmedium in den Zylinderraum 49 unter Druck fördert, wodurch der Kolben 50 in Fig. 5 nach unten verschoben wird. Hierbei wird das in der Aufnahme 54 des Preßteiles 53 liegende Rohr, Rohrstück, Stützhülse und dergleichen radial verpreßt. Fig. 5 zeigt das durch die beiden Preßteile 39, 53 radial verpreßte Werkstück 86.For radial compression, the corresponding tube or pipe section is placed in the receptacle 54 of the pressing member 53. The piston 50 is retracted at the beginning of the pressing process, so that the pressing member 39 is at a corresponding distance from the pressing member 53. As has been explained in detail with reference to the previous embodiment, the piston 28 located in the hydraulic block 32 is constantly reciprocated, wherein it promotes the hydraulic medium in the cylinder chamber 49 under pressure, whereby the piston 50 is moved in Fig. 5 down. Here, the lying in the receptacle 54 of the pressing member 53 tube, pipe section, support sleeve and the like is pressed radially. FIG. 5 shows the workpiece 86 radially compressed by the two pressing parts 39, 53.

Auch bei dieser Ausführungsform ergeben sich die gleichen Vorteile wie beim vorigen Ausführungsbeispiel.
Die beiden Ausführungsbeispiele sind jeweils als elektrohydraulische Werkzeuge ausgebildet, bei denen das eine Preßteil 39 durch Beaufschlagen des Kolbens 50 mittels Hydraulikmedium verschoben wird.Also in this embodiment, the same advantages as in the previous embodiment.
The two embodiments are each formed as electro-hydraulic tools in which the one pressing member 39 is displaced by applying the piston 50 by means of hydraulic medium.

Bei einer einfacheren (nicht dargestellten) Ausführungsform kann die Verstellung des Preßteiles 39 auch mechanisch erfolgen, beispielsweise über einen Spindeltrieb. In diesem Falle ist ein Hydraulikmedium nicht erforderlich. Der Motor 17 treibt in diesem Falle über das Untersetzungsgetriebe 21-den Spindeltrieb an, durch den das Preßteil 39 gegenüber dem anderen Preßteil 53 verschoben wird.In a simpler embodiment (not shown), the adjustment of the pressing member 39 can also be done mechanically, for example via a spindle drive. In this case, a hydraulic medium is not required. The motor 17 drives in this case via the reduction gear 21 to the spindle drive, through which the pressing member 39 is moved relative to the other pressing member 53.

Die Fig. 6 bis 8 zeigen eine Vorrichtung, die entsprechend den vorhergehenden Ausführungsformen ebenfalls als elektrohydraulisches, tragbares Werkzeug ausgebildet ist. Mit den beiden Preßteilen 39, 53 der Preßeinheit 40 wird eine axiale Verpressung vorgenommen. Der Antrieb der Preßteile 39, 53 erfolgt in gleicher Weise wie bei der Ausführungsform nach den Fig. 1 bis 4. Die Preßeinheit 40 hat den Ansatz 42, der in die Vertiefung 41 des Hydraulikblockes 32 eingreift.
Im Gehäuse 51 der Preßeinheit 40 ist der Kolben 50 verschiebbar, der, wie anhand der Ausführungsform nach den Fig. 1 bis 4 beschrieben worden ist, durch Hydraulikmedium verschoben werden kann.Figs. 6 to 8 show a device which is also formed according to the previous embodiments as an electro-hydraulic, portable tool. With the two pressing parts 39, 53 of the pressing unit 40, an axial compression is made. The drive of the pressing parts 39, 53 takes place in the same manner as in the embodiment according to FIGS. 1 to 4. The pressing unit 40 has the projection 42 which engages in the recess 41 of the hydraulic block 32.
In the housing 51 of the pressing unit 40, the piston 50 is displaceable, which, as has been described with reference to the embodiment of FIGS. 1 to 4, can be displaced by hydraulic medium.

Die Preßteile 39, 53 sind wie bei den vorigen Ausführungsformen auswechselbar in entsprechenden Aufnahmen 88, 89 gehalten. Sie haben zylindrische Aufnahmeräume 90, 91, die zylindrische Zapfen 92, 93 der Preßteile 39, 53 formschlüssig aufnehmen. Die Zapfen 92, 93 sind jeweils mit einer in einer Radialebene liegenden Ringnut 94, 95 versehen, in die Rastelemente 96, 97, vorzugsweise Rastkugeln, eingreifen. Sie stehen unter der Kraft von jeweils einer Schraubendruckfeder 98, 99, die in einer Querbohrung 100, 101 der Aufnahmen 88, 89 untergebracht ist. Zur Sicherung des Rastelementes 96, 97 sind die Querbohrungen 100, 101 durch jeweils eine Stiftschraube 102, 103 geschlossen.The pressing parts 39, 53 are held interchangeable in corresponding receptacles 88, 89 as in the previous embodiments. They have cylindrical receiving spaces 90, 91, the cylindrical pins 92, 93 of the pressing parts 39, 53 receive a positive fit. The pins 92, 93 are each provided with a lying in a radial plane annular groove 94, 95, in the locking elements 96, 97, preferably locking balls intervene. They are under the force of a respective helical compression spring 98, 99, which is housed in a transverse bore 100, 101 of the receptacles 88, 89. To secure the locking element 96, 97, the transverse bores 100, 101 are closed by a respective stud 102, 103.

In der Einbaulage liegen die Preßteile 39, 53 mit einem Grundkörper 104, 105 auf der Stirnseite 106, 107 der Aufnahmen 88, 89 auf.In the installed position, the pressing parts 39, 53 with a base body 104, 105 on the end face 106, 107 of the receptacles 88, 89 are on.

Die Preßteile 39, 53 sind vorteilhaft einstückig ausgebildet. Da die Zapfen 92, 93 der Preßteile 39, 53 Zylinderform haben, lassen sie sich im Vergleich zu herkömmlichen Preßteilen einfach und kostengünstig fertigen. Bei herkömmlichen Preßteilen besteht der Steckansatz aus einem an den Grundkörper anschließenden rechteckigen Ansatzteil und einen daran anschließenden zylindrischen Ansatzteil. Dadurch ist die Herstellung solcher Preßteile aufwendig und teuer. Die Ringnuten 94, 95 lassen sich ebenfalls einfach und kostengünstig an den Zapfen 92, 93 anbringen. Von Vorteil ist ferner, daß die Rastelemente nicht, wie bei den herkömmlichen Preßteilen, in den Preßteilen selbst, sondern in den werkzeugseitigen Aufnahmen 88, 89 untergebracht sind. Dadurch sind nur zwei Rastelemente 96, 97 erforderlich, um die unterschiedlichsten Preßteile 39, 53 in den Aufnahmen 88, 89 zu sichern. Da die Preßteile 39, 53 als Steckansatz lediglich die Zapfen 92, 93 haben, können sie einen verhältnismäßig großen Durchmesser haben, so daß sie auch größere Kräfte während des Preßvorganges aufnehmen können.The pressing parts 39, 53 are advantageously formed in one piece. Since the pins 92, 93 of the pressing parts 39, 53 have a cylindrical shape, they can be manufactured in a simple and cost-effective manner compared with conventional press parts. In conventional press parts of the plug-in approach consists of a subsequent to the body rectangular attachment portion and an adjoining cylindrical attachment part. As a result, the production of such pressed parts is complicated and expensive. The annular grooves 94, 95 can also be easily and inexpensively attached to the pins 92, 93. A further advantage is that the locking elements are not, as in the conventional press parts, housed in the press parts themselves, but in the tool-side receptacles 88, 89. As a result, only two latching elements 96, 97 are required to secure the most diverse pressing parts 39, 53 in the receptacles 88, 89. Since the pressing members 39, 53 have only the pins 92, 93 as a plug-in approach, they can have a relatively large diameter, so that they can also absorb larger forces during the pressing process.

Vorteilhaft sind die Aufnahmen 88, 89 mit Abstützungen 108, 109 für die Preßteile 39, 53 versehen. Die Abstützungen 108, 109 sind so an den Aufnahmen 88, 89 vorgesehen, daß die Preßteile 39, 53 unter der beim Preßvorgang auftretenden Reaktionskraft an diesen Abstützungen abgestützt werden. Dadurch ergibt sich eine günstige Kraftübertragung während des Preßvorganges. Die Abstützungen 108, 109 sind vorteilhaft leistenförmig ausgebildet und stehen über die Stirnseite 106, 107 der Aufnahmen 88, 89 vor. Die Preßteile 39, 53 liegen mit ihren Grundkörpern 104, 105 an den Abstützungen 108, 109 an, die vorteilhaft einstückig mit der Aufnahme 88, 89 ausgebildet sind.Advantageously, the receptacles 88, 89 provided with supports 108, 109 for the pressing parts 39, 53. The supports 108, 109 are provided on the receptacles 88, 89, that the pressing parts 39, 53 are supported on the supports under the reaction force occurring during the pressing process. This results in a favorable power transmission during the pressing process. The supports 108, 109 are advantageously formed strip-shaped and project beyond the end face 106, 107 of the receptacles 88, 89. The pressing parts 39, 53 rest with their basic bodies 104, 105 on the supports 108, 109, which are advantageously formed integrally with the receptacle 88, 89.

In die Aufnahmen 88, 89 lassen sich, je nach Größe der zu verpressenden Werkstücke, unterschiedlich große Preßteile 39, 53 einsetzen. Die Zapfen 92, 93 sind verhältnismäßig kurz, so daß die Preßteile 39, 53 eine gedrungene Bauform haben, wodurch sich auch eine günstige Kraftaufnahme und Kraftübertragung ergibt.Depending on the size of the workpieces to be compressed, differently sized pressing parts 39, 53 can be inserted into the receptacles 88, 89. The pins 92, 93 are relatively short, so that the pressing parts 39, 53 have a stocky design, which also results in a favorable power and power transmission.

Die Zapfen 92, 93 sind exzentrisch in bezug auf den Grundkörper 104, 105 vorgesehen. Die Abstände 110, 111 (Fig. 6) zwischen der Achse 112 der Zapfen 92, 93 und den einander gegenüberliegenden Außenseiten 113, 114 der Grundkörper 104, 105 der Preßteile 39, 53 sind unterschiedlich. Dies hat den Vorteil, daß die Preßteile 39, 53 nicht seitenverkehrt in die Aufnahmen 88, 89 gesteckt werden können.The pins 92, 93 are eccentric with respect to the base 104, 105 are provided. The distances 110, 111 (Fig. 6) between the axis 112 of the pins 92, 93 and the opposite outer sides 113, 114 of the base body 104, 105 of the pressing parts 39, 53 are different. This has the advantage that the pressing parts 39, 53 can not be inserted laterally into the receptacles 88, 89.

Die Preßteile 39, 53 sind im übrigen gleich ausgebildet wie bei der Ausführungsform nach den Fig. 1 bis 4. Die miteinander axial zu verpressenden Werkstücke werden in der beschriebenen Weise in die Preßteile 39, 53 eingelegt. Anschließend wird durch Betätigen des Schalters 15 (Fig. 1 und 2) der Motor 17 (Fig. 2) eingeschaltet, wodurch die beiden Preßteile 39, 53 relativ zueinander bewegt werden, wobei der axiale Preßvorgang stattfindet. Wie beim Ausführungsbeispiel nach den Fig. 1 bis 4 verläuft die Achse 82 des Ansatzes 42 durch den maximalen Verstellbereich des Preßteiles 39. Die beiden Preßteile 39, 53 liegen dadurch zumindest teilweise beiderseits der Achse 82 des Ansatzes 42, wodurch sich eine optimale Gewichtsverteilung ergibt.The pressing parts 39, 53 are otherwise the same design as in the embodiment according to FIGS. 1 to 4. The workpieces to be pressed together axially are inserted in the manner described in the pressing parts 39, 53. Subsequently, by operating the switch 15 (Figures 1 and 2), the motor 17 (Figure 2) is turned on, whereby the two pressing members 39, 53 are moved relative to each other, wherein the axial pressing takes place. As in the embodiment of FIGS. 1 to 4, the axis 82 of the projection 42 extends through the maximum adjustment of the pressing member 39. The two pressing members 39, 53 are thereby at least partially on either side of the axis 82 of the projection 42, resulting in an optimal weight distribution.

An die Preßeinheit 40 kann ein Rohraufweiter 115 angeschlossen werden. Er hat ein Gehäuse 116 (Fig. 7), das an beiden Enden offen ist und in dem ein Aufweitdorn 117 in bekannter Weise untergebracht ist. Das Gehäuse 116 weist an seinem der Preßeinheit 40 zugewandten Seite einen radial nach außen gerichteten Flansch 118 auf, mit dem der Rohraufweiter 115 lösbar an der Preßeinheit 40 befestigt werden kann. Die Achse des Rohraufweiters 115 fällt mit der Achse des Kolbens 50 zusammen.To the pressing unit 40, a tube expander 115 can be connected. It has a housing 116 (Fig. 7) which is open at both ends and in which an expanding mandrel 117 is housed in a known manner. The housing 116 has at its the pressing unit 40 side facing a radially outwardly directed flange 118, with which the tube expander 115 can be releasably attached to the pressing unit 40. The axis of the tube expander 115 coincides with the axis of the piston 50.

Auf das von der Preßeinheit 40 abgewandte Ende des Gehäuses 116 ist eine Mutter 119 geschraubt, die Aufweitsegmente 120 enthält. Wie Fig. 8 zeigt, sind sechs Aufweitsegmente 120 vorgesehen, die bei eingefahrenem Aufweitdorn 117 mit ihren Seitenflächen aneinanderliegen. Die Aufweitsegmente 120 greifen mit radial nach außen ragenden Stegen 121 in einen Ringraum 122 ein, der an der Innenseite der Mutter 119 vorgesehen ist. Der Ringraum 122 ist radial so breit, daß die Aufweitsegmente 120 während des Aufweitvorganges ausreichend weit radial nach außen verschoben werden können. Im Ringraum 122 sind die Aufweitsegmente 120 axial lagegesichert.On the side remote from the pressing unit 40 end of the housing 116, a nut 119 is screwed, the expansion segments 120 includes. As shown in FIG. 8, six expansion segments 120 are provided, which lie against each other with retracted expansion mandrel 117 with their side surfaces. The expansion segments 120 engage with radially outwardly projecting webs 121 in an annular space 122, which is provided on the inside of the nut 119. The annular space 122 is radially so wide that the expansion segments 120 can be moved sufficiently far radially outward during the expansion process. In the annular space 122, the expansion segments 120 are axially secured in position.

Fig. 7 zeigt in der oberen Hälfte den Aufweitdorn 117 in seiner eingefahrenen Lage, in der die Aufweitsegmente 120 in bekannter Weise aneinanderliegen. Die untere Hälfte in Fig. 7 zeigt den Aufweitdorn 117 in seiner ausgefahrenen Lage. Die Aufweitsegmente 120 werden beim Ausfahren des Aufweitdorn 117 radial nach außen verfahren, wodurch das auf die Aufweitsegmente 120 gesteckte Rohr radial aufgeweitet wird. Die Aufweitsegmente 120 sind innenseitig jeweils mit einer Konusfläche 123 versehen, mit denen die Aufweitsegmente 120 am konischen Aufweitdorn 117 anliegen. Außenseitig sind die Aufweitsegmente 120 in bekannter Weise mit Zylinderteilflächen 124 versehen, die während des Aufweitvorganges an der Innenseite des aufzuweitenden Rohres anliegen.Fig. 7 shows in the upper half of the expanding mandrel 117 in its retracted position in which the expansion segments 120 abut in a known manner. The lower half in Fig. 7 shows the expanding mandrel 117 in its extended position. The expansion segments 120 are moved radially outward during extension of the expanding mandrel 117, whereby the tube inserted onto the expansion segments 120 is radially expanded. The expansion segments 120 are each provided on the inside with a conical surface 123, with which the expansion segments 120 abut the conical expanding mandrel 117. On the outside, the expansion segments 120 are provided in a known manner with cylindrical part surfaces 124, which bear against the inside of the tube to be expanded during the expansion process.

Durch diesen optionalen Rohraufweiter 115 können vor dem Preßvorgang Rohre, falls notwenig, aufgeweitet werden. Hierzu wird das Rohr mit seinem einen Ende auf die Aufweitsegmente 120 gesteckt. Anschließend wird durch Betätigen des Schalters 15 der Motor 17 eingeschaltet, wodurch der Kolben 50 in der anhand der Fig. 1 bis 4 beschriebenen Weise verfahren wird. Der Boden 76 des Kolbens 50 trifft beim Verschieben auf ein tellerartiges Endstück 125 des Aufweitdorns 117. Er wird dadurch aus seiner Ausgangslage (obere Hälfte in Fig. 7) ausgefahren, wodurch die Aufweitsegmente 120 radial nach außen verschoben werden und das Rohrende aufweiten. Sobald der Aufweitvorgang beendet ist, wird der Motor 17 abgeschaltet. Der Kolben 50 wird in der beschriebenen Weise durch Federkraft in seine Ausgangslage zurückgeschoben. Der Aufweitdorn 117 steht ebenfalls vorteilhaft unter Federkraft, so daß beim Zurückfahren des Kolbens 50 auch der Aufweitdorn 117 in seine Ausgangslage zurückgeschoben wird. Die Aufweitsegmente 120 stehen ebenfalls unter Federkraft, so daß die Aufweitsegmente beim Zurückfahren des Aufweitdorns 117 radial zusammengefahren werden.By means of this optional tube expander 115, tubes, if necessary, can be expanded before the pressing process. For this purpose, the tube is inserted with its one end on the expansion segments 120. Subsequently, the motor 17 is turned on by actuating the switch 15, whereby the piston 50 is moved in the manner described with reference to FIGS. 1 to 4. The bottom 76 of the piston 50 meets when moving on a plate-like end portion 125 of the expanding mandrel 117. It is thereby extended from its initial position (upper half in Fig. 7), whereby the expansion segments 120 radially be moved outwards and widen the pipe end. Once the expansion process is completed, the motor 17 is turned off. The piston 50 is pushed back in the manner described by spring force to its original position. The Aufweitdorn 117 is also advantageous under spring force, so that upon retraction of the piston 50 and the expanding mandrel 117 is pushed back into its original position. The expansion segments 120 are also under spring force, so that the expansion segments are moved together radially when returning the mandrel 117.

Nach dem Aufweitvorgang wird das Rohr abgenommen und auf eine Stützhülse eines Fittings geschoben, der in das entsprechende Preßteil 39, 53 gelegt wird. In das andere Preßteil wird die mit dem Fitting zu verpressende, auf dem Rohr bereits aufgeschobene Preßhülse gelegt. Sie wird mit der Preßeinheit in der beschriebenen Weise auf das aufgeweitete, auf der Stützhülse befindliche Rohrende axial aufgepreßt.After the expansion process, the tube is removed and pushed onto a support sleeve of a fitting, which is placed in the corresponding pressing member 39, 53. In the other pressing part to be pressed with the fitting, already placed on the tube compression sleeve is placed. It is pressed axially with the pressing unit in the manner described on the expanded, located on the support tube end.

Je nach Innendurchmesser des aufzuweitenden Rohres können auf das Gehäuse 116 des Rohraufweiters 115 Muttern 119 mit entsprechenden Aufweitsegmenten 120 geschraubt werden. Darüber hinaus kann der Benutzer der Vorrichtung, falls er den Rohraufweiter 115 nicht benötigt, von der Preßeinheit 40 jederzeit lösen.Depending on the inner diameter of the tube to be expanded, nuts 119 with corresponding expansion segments 120 can be screwed onto the housing 116 of the tube expander 115. In addition, the user of the device, if he does not need the Rohraufweiter 115, solve the pressing unit 40 at any time.

Claims (49)

  1. Device for producing a pressing force with a housing (1) in which is located a drive (4) which comprises a motor (17) and a driving element (50) driven by it, with which at least one of two pressing components (39, 53) are movable during the pressing operation with regard to the other pressing component of a pressing unit (40) which joins with an oblong housing part (2), whereby the device is formed as an electric driven tool and to the housing (1) of the electric tool are attached one behind the other the driving element (50) and the pressing components (39, 53) of the pressing unit (40),
    characterised in that the driving element (50) is movable transversely to the longitudinal axis (11) of the housing part (2) to which the pressing unit (40) is connected and in that the movable pressing component (39) is provided for a slide (59), guided at a housing (51) which comprises the driving element (50).
  2. Device according to claim 1,
    characterised in that the driving element (50) is located outside the housing (1) of the electric tool.
  3. Device according to claim 1 or 2,
    characterised in that the slide (59) is guided at the exterior (62, 63) of the housing (51) and embraces it preferably at least partially.
  4. Device according to one of the claims 1 to 3,
    characterised in that the slide (59) is formed U-shaped, as viewed in its direction of displacement and preferably guided by components of the slide (60, 61), formed like flanges and at external sides (62, 63) of the housing (51), opposite to each other.
  5. Device according to one of the claims 1 to 4,
    characterised in that the slide (59) is position proof transversely to its direction of displacement at the housing (51).
  6. Device according to one of the claims 1 to 5,
    characterised in that the driving element (50) is a piston, which can be charged by a pressure medium.
  7. Device according to one of the claims 1 to 6,
    characterised in that the slide (59) is connected with the driving element (50), which preferably is situated on a support (72), which is connected with the slide (59) preferably with its slide components (60, 61).
  8. Device according to claim 7,
    characterised in that the support (72) delimits the motion travel of the one pressing component (39) in one direction and preferably abuts in the one final position of the one pressing component (39) to a stop of the housing (51).
  9. Device according to claim 8,
    characterised in that the support (72) is positioned imbedded within the housing (51) in the one final position of the pressing component (39).
  10. Device according to one of the claims 1 to 9,
    characterised in that the pressing unit (40) is coupled with at least one connecting piece (42) with a part (32) of the drive (4).
  11. Device according to claim 10,
    characterised in that through the connecting piece (42), preferably projecting transversely from the housing (51), passes a supply line (44) for the pressure medium to the drive element (50).
  12. Device according to claim 10 or 11,
    characterised in that a longitudinal axis (82) of the connecting piece (42) proceeds transversely to the direction of motion of the one pressing component (39).
  13. Device according to one of the claims 10 to 12,
    characterised in that the longitudinal axis (82) of the connecting piece (42) proceeds through the maximum regulating range (84) of the one pressing component (39) and that advantageously in the one final position of the one pressing component (39) the longitudinal axis (82) of the connecting piece (42) proceeds approximately in the middle between the two pressing components (39, 53).
  14. Device according to one of the claims 10 to 13,
    characterised in that the connecting piece (42) is a coupling piece, with which the pressing unit (40) can be coupled with a part (32) of the drive (4) and that advantageously the line connection from the drive (4) to the pressing unit (40) can be made.
  15. Device according to one of the claims 10 to 14,
    characterised in that the axis (52) of the drive element (50) is transversely situated, preferably perpendicular to the longitudinal axis (82) of the connecting piece (42).
  16. Device according to one of the claims 10 to 15,
    characterised in that the connecting piece (42) is rotatingly connected with the part (32) of the drive (4).
  17. Device according to one of the claims 1 to 16,
    characterised in that the housing (1) of the electric driven tool comprises two housing components (2, 5) situated parallel juxtaposed to each other and preferably converging into one another.
  18. Device according to claim 17,
    characterised in that one housing part (5) juts out over the other housing part (2) at the side turned away from the pressing unit (40).
  19. Device according to claim 17 or 18,
    characterised in that from one housing part (5) sticks out transversely, preferably at an obtuse angle, a handle (7), which is modelled preferably in one piece with both housing parts (2, 5).
  20. Device according to one of the claims 10 to 19,
    characterised in that the connecting piece (42) adjoins to a pressure means unit (32), which is located within one housing part (2).
  21. Device according to claim 20,
    characterised in that the pressure means unit (32) is connected to at least one reservoir (33) for the pressure medium, accommodated preferably within one housing part (2).
  22. Device according to claim 20 or 21,
    characterised in that the pressure means unit (32) comprises at least one pump element (28), preferably being a piston movable to and fro.
  23. Device according to claim 22,
    characterised in that a chamber (31), accommodating one pump element (28) is connected with the reservoir (33).
  24. Device according to one of the claims 21 to 23,
    characterised in that the reservoir (33) may be barred against a line (37) by at least one nonreturn valve (36), opening advantageously with the intake stroke of the pump element (28) and closing with the pressure stroke.
  25. Device according to one of the claims 20 to 24,
    characterised in that the pressure means unit (32) and the connecting piece (42) of the pressing unit (40) are located one the same axis behind one another.
  26. Device according to one of the claims 22 to 25,
    characterised in that the pump element (28) is movable to and fro by an eccentric drive mechanism (23, 24, 26) which is accommodated preferably within another housing part (2, 5) than the pressure means unit (32).
  27. Device according to claim 26,
    characterised in that the pressure means unit (32) and the eccentric drive mechanism (23, 24, 26), disposed preferably within the zone between the pressure means unit (32) and the handle (7) are situated one above the other.
  28. Device according to claim 26 or 27,
    characterised in that the eccentric drive mechanism (23, 24, 26) can be driven by one driving element (17) and that preferably between the eccentric drive mechanism (23, 24, 26) and the driving element (17) a reduction gear (21) is connected, preferably configurated as epicyclic gear train.
  29. Device according to claim 28,
    characterised in that the eccentric drive mechanism (23, 24, 26), the reduction gear (21) and the driving element (17) are disposed axially, preferably coaxially behind one another.
  30. Device according to one of the claims 22 to 29,
    characterised in that the direction of movement (27) of the pump element (28) is situated parallel to the direction of movement of one pressing piece (39).
  31. Device according to one of the claims 1 to 5 and 7 to 30,
    characterised in that the driving element is a spindle, which is drivingly connected with one pressing piece (39).
  32. Device according to one of the claims 1 to 31,
    characterised in that with the pressing unit (40) an axial pressing takes place.
  33. Device according to one of the claims 1 to 31,
    characterised in that with the pressing unit (40) a radial pressing takes place.
  34. Device according to one of the claims 1 to 33,
    characterised in that the pressing pieces (39, 53) are provided with a cylindrical tenon (92, 93), which comprises a ring groove (94, 95) in which engages at least one latch element (96, 97).
  35. Device according to claim 34,
    characterised in that the latch element (96, 97) is provided within a boring (100, 101) preferably located within a receiving means (88, 89) of the pressing unit (40), which advantageously has two receiving means (88, 89) for the pressing pieces (39, 53).
  36. Device according to claim 35,
    characterised in that one receiving means (88, 89) is connected with the slide (59) and the other receiving means (89, 88) is connected with the housing (51) of the pressing unit (40).
  37. Device according to one of the claims 34 to 36,
    characterised in that the latch element (96, 97) is a notch ball, pressurized by resilience.
  38. Device according to one of the claims 34 to 37,
    characterised in that the tenon (92, 93) juts out from a basic body (104, 105) of the pressing piece (39, 53), advantageously constructed in one piece.
  39. Device according to one of the claims 1 to 38,
    characterised in that the pressing piece (39, 53) is supported against the reaction force, emerging from the pressing operation.
  40. Device according to claim 39,
    characterised in that the pressing piece (39, 53) is supported at at least one, advantageously gib-shaped support (108, 109) of the receiving means (88, 89).
  41. Device according to claim 40,
    characterised in that the support (108, 109) is provided at the receiving means (88, 89) and is formed advantageously in one piece with the receiving means (88, 89).
  42. Device according to claim 40 or 41,
    characterised in that the support (108, 109) projects over the front face (106, 107) of the receiving means (88, 89).
  43. Device according to one of the claims 38 to 42,
    characterised in that the pressing piece (39, 53) abuts with its basic body (104, 105) to the support (108, 109).
  44. Device according to one of the claims 38 to 43,
    characterised in that the axis (112) of the tenon (92, 93) of the pressing pieces (39, 53) sticks out eccentrically from its basic body (104, 105) and has advantageously different distances (110, 111) from outsides (113, 114) opposing each other of the basic body (104, 105) of the pressing pieces (39, 53).
  45. Device according to one of the claims 1 to 44,
    characterised in that to the pressing unit (40) can be connected at least one expander for pipes (115).
  46. Device according to claim 45,
    characterised in that the expander for pipes (115) comprises a case (116) within an expanding mandrel (117) is axially deplacably located.
  47. Device according to claim 45 or 46,
    characterised in that the expander for pipes (115), which preferably can be screwed to the pressing unit (40) is provided with expanding segments (120) which are radially displacable with the expanding mandrel (117) and advantageously are accommodated within a nut (119) which can be screwed to the case (116) of the expander for pipes (115).
  48. Device according to one of the claims 46 or 47,
    characterised in that the expanding mandrel (117) is displacable by the drive element (50) against resilience.
  49. Device according to one of the claims 45 to 48,
    characterised in that the axis of the expander for pipes (115) converges with the axis of the drive element (50).
EP00110784A 1999-05-28 2000-05-20 Device for producing a pressing force Revoked EP1055488B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19924509 1999-05-28
DE19924509 1999-05-28
DE19949797 1999-10-15
DE19949797A DE19949797A1 (en) 1999-05-28 1999-10-15 Device for applying a pressing force

Publications (3)

Publication Number Publication Date
EP1055488A2 EP1055488A2 (en) 2000-11-29
EP1055488A3 EP1055488A3 (en) 2004-08-18
EP1055488B1 true EP1055488B1 (en) 2007-08-08

Family

ID=26053563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00110784A Revoked EP1055488B1 (en) 1999-05-28 2000-05-20 Device for producing a pressing force

Country Status (4)

Country Link
US (1) US6415641B1 (en)
EP (1) EP1055488B1 (en)
DE (1) DE50014538D1 (en)
ES (1) ES2288816T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2085188A1 (en) 2008-02-02 2009-08-05 Wezag GmbH Werkzeugfabrik Spreading pliers

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10216213A1 (en) * 2002-04-10 2003-10-23 Klauke Gmbh Gustav Electro-hydraulic pressing device and method for operating the same
US6668613B2 (en) * 2002-04-09 2003-12-30 Fci Americas Technology, Inc. Hydraulic compression tool and hydraulic compression tool motor
US7251980B2 (en) * 2005-04-13 2007-08-07 Latchtool Group Llc Hydraulically powered gripping tool
US7464578B2 (en) * 2005-06-03 2008-12-16 Fci Americas Technology, Inc. Hand-held, portable, battery-powered hydraulic tool
DE102007030644A1 (en) * 2007-07-02 2009-01-08 Gustav Klauke Gmbh Hydraulically operated hand tool
CN101676052B (en) * 2008-09-19 2013-10-30 德昌电机(深圳)有限公司 Electric drill with force sensing device
DE102008051284B3 (en) * 2008-10-10 2010-06-02 Uponor Innovation Ab Tool device for connecting a plastic pipe
FR2962777B1 (en) * 2010-07-19 2012-07-13 Peugeot Citroen Automobiles Sa CLAMP FOR INSERTING OR REMOVING THE AXIS OF A HINGE
DE102011011742A1 (en) * 2011-02-18 2012-08-23 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Method for automatically controlling an electro-hydraulic pressing tool
DE102011052852A1 (en) 2011-08-19 2013-02-21 Gustav Klauke Gmbh pressing device
DE202012104763U1 (en) * 2012-12-07 2014-03-11 Rehau Ag + Co. Tool device for connecting a plastic pipe or a metal-plastic composite pipe to a fitting with a sliding or compression sleeve
US8935948B1 (en) * 2013-02-17 2015-01-20 Jack T Gregory Electric-hydraulic riveter and crimper hand power tool
US9388885B2 (en) 2013-03-15 2016-07-12 Ideal Industries, Inc. Multi-tool transmission and attachments for rotary tool
DE202014001763U1 (en) 2014-02-28 2015-05-29 Joiner's Bench Gmbh Tool for machining a pipe element at one end, tool arrangement
DE102015119734A1 (en) * 2015-08-10 2017-02-16 Gustav Klauke Gmbh Device for applying a pressing force, and pair of pressing jaws
US9975289B2 (en) 2016-07-27 2018-05-22 Black & Decker Inc. PEX expanding tool
EP3650176A1 (en) * 2018-11-07 2020-05-13 Von Arx AG Pressing machine
EP4005733A1 (en) * 2020-11-27 2022-06-01 Hilti Aktiengesellschaft Eccentric transmission for a machine tool
CN214443619U (en) 2020-11-27 2021-10-22 米沃奇电动工具公司 Electric threaded rod cutting machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494398A (en) * 1983-02-14 1985-01-22 Midas International Corporation Tubing expander apparatus
US5195354A (en) * 1989-03-31 1993-03-23 Japan Storage Battery Co., Ltd. Cam crank mechanism and motor driven hydraulic tool
DE69128964T2 (en) * 1990-04-06 1998-08-06 Lokring Corp HYDRAULIC ASSEMBLY TOOL WITH IMPROVED LOAD-BEARING ARRANGEMENT FOR PIPE CONNECTORS
FR2677908B1 (en) * 1991-06-20 1995-04-07 Hydr Am VERSATILE SELF-CONTAINED TOOL SUCH AS SHEARS / HYDRAULICALLY CONTROLLED SPREADERS.
DE4446503C1 (en) * 1994-12-25 1996-05-15 Rothenberger Werkzeuge Masch Hand tool with two counter=moving retainers accommodating workpieces and=or tools
US5727417A (en) * 1995-09-22 1998-03-17 Greenlee Textron Inc. Portable battery powered crimper
DE19621877C2 (en) * 1996-05-31 2002-06-27 Rehau Ag & Co Compression pliers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2085188A1 (en) 2008-02-02 2009-08-05 Wezag GmbH Werkzeugfabrik Spreading pliers
DE102008007303A1 (en) 2008-02-02 2009-08-06 Wezag Gmbh Werkzeugfabrik expanding pliers
US8087280B2 (en) 2008-02-02 2012-01-03 Wezag Gmbh Werkzeugfabrik Spreading pliers

Also Published As

Publication number Publication date
EP1055488A3 (en) 2004-08-18
US6415641B1 (en) 2002-07-09
ES2288816T3 (en) 2008-02-01
DE50014538D1 (en) 2007-09-20
EP1055488A2 (en) 2000-11-29

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