EP4349532A2 - Tête d'outil d'un outil à actionnement hydraulique - Google Patents

Tête d'outil d'un outil à actionnement hydraulique Download PDF

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Publication number
EP4349532A2
EP4349532A2 EP24154342.0A EP24154342A EP4349532A2 EP 4349532 A2 EP4349532 A2 EP 4349532A2 EP 24154342 A EP24154342 A EP 24154342A EP 4349532 A2 EP4349532 A2 EP 4349532A2
Authority
EP
European Patent Office
Prior art keywords
device head
tool
piston
hydraulic piston
hydraulic
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.)
Pending
Application number
EP24154342.0A
Other languages
German (de)
English (en)
Other versions
EP4349532A3 (fr
Inventor
Andreas Lehr
Egbert Frenken
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.)
Gustav Klauke GmbH
Original Assignee
Gustav Klauke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gustav Klauke GmbH filed Critical Gustav Klauke GmbH
Publication of EP4349532A2 publication Critical patent/EP4349532A2/fr
Publication of EP4349532A3 publication Critical patent/EP4349532A3/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/005—Hydraulic driving means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/048—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using presses for radially crimping tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • 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
    • B25B27/026—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 fluid driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping

Definitions

  • the invention relates to a device head of a hydraulically actuated tool, with a counterholder formed integrally in one piece on the device head, which has a receptacle for a first tool, and a second tool which can be moved towards the counterholder by means of a hydraulic piston, wherein a cylindrical formation in relation to the hydraulic piston is also provided integrally in one piece with the device head.
  • Device heads of the type in question are known in various designs. In conjunction with a hydraulic drive, these are used, for example, for pressing, cutting or punching workpieces, for which purpose corresponding first and second tools are arranged in the device head or on the hydraulic piston.
  • a hydraulic drive these are used, for example, for pressing, cutting or punching workpieces, for which purpose corresponding first and second tools are arranged in the device head or on the hydraulic piston.
  • EP1084798 B1 US6,718,870 B1 ).
  • the device head essentially in one piece and from the same material, correspondingly integrally comprising the counterholder and a cylindrical design for the direct or indirect reception and guidance of the hydraulic cylinder.
  • a device head of an electromotor-operated device head wherein the device head has two housing halves and a frame element.
  • the frame element is formed with a toothed formation.
  • the task is to advantageously design a device head of the type in question with a second tool that can be moved by means of a hydraulic piston.
  • the device head further comprises an integral, one-piece toothed formation for the angularly fixed but variable arrangement of a support rod.
  • the user can use the device head away from the body. Additionally or alternatively, the device head can be stabilized in a working position using the support rod. This means that work can be carried out overhead, for example, at least at a distance of 1 meter or more.
  • the device head, and possibly also the hydraulic unit acting on the hydraulic cylinder are no longer held directly or solely by hand, but rather, at least additionally, via the support rod.
  • the support rod can have a fixed length of, for example, 0.5 meters, 1 meter, 2 meters up to, for example, 3 meters, whereby any intermediate length, for example between 0.5 and 3 meters, can also be given as a fixed length.
  • the support rod can also be Length can be adjustable in one possible embodiment, for example due to a telescopic design, for example with a telescopic length of 0.5 to 2 meters.
  • Handling via the support rod is facilitated by the external toothing provided on the device head.
  • This enables a fixed angular arrangement of the support rod relative to a longitudinal center axis of the device head, which longitudinal center axis can also accommodate the rotation axis of the hydraulic cylinder or hydraulic piston if necessary.
  • This angular arrangement of the support rod is preferably changeable, for which purpose a positive connection provided by the toothing can be temporarily canceled.
  • the integrally formed toothing formation can have toothing projections raised relative to the surrounding surface of the device head, optionally only one such toothing projection, or alternatively toothing recesses set back relative to the above-described surface of the device head, optionally also only one toothing recess.
  • the second tool can be moved between a starting position and a working end position by means of the hydraulic piston, wherein the hydraulic piston can act on a piston shaft formed in one piece with a holder for the second tool and the piston shaft can be completely received in the cylindrical formation in the starting position.
  • the working end position does not necessarily have to be the maximum achievable end position of the hydraulic piston, which may be limited by a stop. Rather, the end working position can be the displacement position of the hydraulic piston in which a measure to be carried out is carried out using the tools as specified. From this end working position, the hydraulic piston can move back towards the starting position, possibly automatically as a result of a valve opening in the hydraulic system.
  • the holder for the second tool can, as preferred, be designed as a single piece with a piston shaft, on which the hydraulic piston can preferably act, and more preferably made of the same material. This offers further advantages in terms of manufacturing and assembly.
  • the hydraulic piston can, as further preferred, be provided unconnected to the piston shaft or alternatively detachably connected to the piston shaft.
  • the piston shaft is protected from direct external damage, for example when changing the device head or when storing the device head.
  • the second tool can be moved by means of the hydraulic piston between a starting position and a working end position, wherein the piston shaft can have a receptacle which is enlarged transversely to a direction of movement of the hydraulic piston compared to the piston shaft and is assigned to the second tool, and the receptacle is held in the working end position transversely to the direction of movement in an undercut formed on the device head.
  • the holder can, for example, have a projection area that is overlapped by an overlapping section of the device head in a direction transverse to the direction of movement of the holder.
  • the holder can also have an under-gripping section and the device head can have a projection area that interacts in this way. This guides the holder in particular, but also possibly the piston shaft connected to the holder, in particular in the end working position, and prevents movement in a seal transverse to the direction of movement.
  • the toothing formation can be offset laterally, but overlapping the cylindrical formation, when viewed in a longitudinal cross-section of the device head, in which longitudinal cross-section a rotation axis of the hydraulic piston is shown as a line.
  • the overlap can occur in the radial direction with respect to the hydraulic piston axis. This overlap can also occur in a piston shaft area, and this can also occur both in an initial position and in an end working position of the hydraulic piston.
  • the cylindrical design can accordingly change in the area of the tooth formation into a shape that is smaller than the diameter the cylindrical shape has a reduced thickness and is formed integrally and in one piece with the cylindrical shape.
  • This leg can also carry the counterholder in an extension that is essentially parallel to the hydraulic piston axis.
  • the toothing formation can be designed to be concentrically circumferential with respect to a central through-opening, for example for the passage of a clamping device, furthermore for example a clamping screw. If several toothing projections or toothing recesses are provided in the toothing formation, these are preferably positioned in a circular shape or in the shape of a circular segment with respect to the geometric central axis of the through-opening.
  • tooth projections or tooth recesses of the tooth formation can also be provided evenly spaced from one another in the circumferential direction, relative to the geometric center axis of the through opening.
  • the holder for the second tool can, as preferred, be designed as one piece with the piston shaft, on which the hydraulic piston can preferably act, and more preferably made of the same material. This offers further advantages in terms of manufacturing and assembly.
  • the hydraulic piston can, as further preferred, be provided unconnected to the piston shaft or alternatively detachably connected to the piston shaft.
  • the holder can be inserted into the device head together with the piston shaft in a one-piece design during assembly or removed from the device head during disassembly.
  • the holder in the starting position which can preferably correspond to a basic position of the device head not loaded by the hydraulic piston, can be displaced transversely to the direction of movement for assembly and disassembly.
  • This can be achieved in particular by the fact that at least in this starting position the undercut preferably provided in the end working position with the device head is not provided or cannot be overcome.
  • This undercut and the resulting guidance as well as the anti-twisting and anti-tilting protection are only achieved in a preferred embodiment when the holder is displaced from the starting position towards the end working position.
  • the holder can be moved in a direction transverse to the direction of movement makes it possible to conveniently assemble or disassemble a holder that is formed in one piece with the piston shaft, in that the holder can be tilted into the cylindrical shape during assembly or out of the cylindrical shape during disassembly.
  • the device head can be connected to a hydraulic hose, which can be connected at the other end to the hydraulic unit to allow the device head to move freely relative to a hydraulic unit that generates hydraulic pressure.
  • the hydraulic hose can have a length that allows the device head to move almost freely while the hydraulic unit is placed on a floor or, for example, at table height, as is preferred.
  • the arrangement of the support rod is particularly suitable for such a configuration. This configuration allows, for example, overhead use of the device head, further in particular a use which is to take place at a distance of, for example, one to two metres or more from the user.
  • the device head can also be rigidly connected to a body tool part in which the hydraulic unit is arranged.
  • a body tool part is known, for example, from the EP1519813B1 ( US7,254,982 B2 ).
  • the content of this patent specification is hereby fully incorporated into the disclosure of the present invention, also for the purpose of incorporating features of this patent in claims of the present invention.
  • the body tool part can also be used by the user as a handle for guiding the device head.
  • the arrangement of the support rod or the use of a support rod arranged on the device head can be omitted when the body tool part is arranged.
  • the hydraulic piston In the initial position, the hydraulic piston can be completely accommodated in the cylindrical design.
  • the hydraulic piston or parts of the hydraulic piston preferably do not protrude beyond the cylindrical design, or possibly the hydraulic cylinder formed thereby, in the axial direction. This offers advantages, for example, in the case of a device head that is not connected to a hydraulic hose or a body tool part, for example when changing the device head or storing the device head. Damage to the hydraulic piston or parts of the hydraulic piston due to freely protruding beyond the end of the cylindrical design is counteracted by the design according to the invention.
  • the cylindrical design can also have a connection receptacle for the body tool part or the hydraulic hose in relation to the starting position of the hydraulic piston in continuation of a direction of movement of the hydraulic piston from the end working position to the starting position or in the extension direction of a hydraulic piston rotation axis outside the area surrounding the hydraulic piston.
  • the connection receptacle is spaced apart from the hydraulic piston in the axial direction or direction of movement of the hydraulic piston, preferably in the starting position as well as in the end working position and in every position between these two end positions. This can enable further assembly-related advantages.
  • connection receptacle can have a free inner diameter that can be larger than the diameter of the cylindrical formation in an area in which the cylindrical formation surrounds the hydraulic piston in the starting position.
  • the cylindrical formation can simultaneously and directly form the hydraulic cylinder in the area surrounding the hydraulic piston, accordingly having an inner cylinder surface that essentially interacts with the hydraulic piston.
  • the section having the connection receptacle which can further preferably also be formed integrally in one piece with the cylindrical formation, can have an inner diameter which can correspond, for example, to approximately 1.05 to 1.3 times, further, for example, to approximately 1.1 times the inner diameter of the cylindrical formation.
  • the hydraulic piston can consist of a piston shaft and a cover part arranged at the end facing away from the second tool.
  • the piston shaft can be surrounded by a return spring, which can be supported on the cover part in the area of one end.
  • the end of the spring facing away from the cover part is supported on a section of the cylindrical design of the device head.
  • the piston shaft can also be designed as a hollow cylinder over part of its length, for example over 50 to 95% of the length, or even over the entire length if necessary. This initially reduces the weight in the area of the piston shaft. This also allows favorable force ratios to be achieved in the area of the tool that can be moved by the hydraulic piston.
  • the clamping screw can hold the cover part by passing through the hollow cylinder.
  • the clamping screw can interact with a threaded hole at the end, which can be formed in the piston shaft or in a tool holder adjoining the piston shaft for receiving the second tool.
  • An adapter part can be arranged on the connection holder, for example for connecting a hydraulic hose or a body tool part.
  • Various adapter parts can be provided accordingly.
  • a piston head of the hydraulic piston can be located opposite a piston-side end face of the adapter part in the starting position.
  • the device head can be designed in the described longitudinal cross-section as a whole in a C-shape, whereby Furthermore, in this regard, production can be carried out using the investment casting process or the metal printing process. This enables an integral, one-piece design. Titanium, for example, can be used as the material for producing the device head, according to one possible design.
  • the device head 1 is preferably integrally formed in one piece with a counterholder 2 for receiving a first tool 3, and furthermore has an integrally formed cylindrical formation 4 in which a hydraulic piston 6 acting on a second tool 5 can be linearly displaced in a directly or indirectly guided manner.
  • the cylindrical formation 4 can directly form a hydraulic cylinder 7 in which the hydraulic piston 6 is guided.
  • a toothed formation 8 is provided on the latter for the angularly fixed but variable arrangement of a support rod 9.
  • the integrally formed device head 1 can be viewed as a whole with reference to a side view according to Figure 4 or to a longitudinal cross-section according to Figure 3 , in which a hydraulic piston axis x is represented as a line, should be designed approximately C-shaped, with one C-leg forming the aforementioned counterholder 2 and the opposite C-leg essentially the cylindrical formation 4. These C-legs are connected to one another via a connecting leg 10 (C-web) which is essentially aligned along the hydraulic piston axis x.
  • C-web connecting leg 10
  • the cylindrical formation 4, which in the illustrated embodiment directly offers the running surface for the hydraulic piston 6 on the inside of the wall, can be designed to be essentially circular-cylindrical on the outside of the wall with respect to a cross section transverse to the alignment of the axis x.
  • the section of the connecting leg 10 which adjoins the cylinder wall of the cylindrical formation 4 in this cross section can, as is also preferred, extend essentially in the radial direction with respect to the axis x, wherein the relevant dimension of the wall thickness of the connecting leg 10 in a direction perpendicular to the axis x is less than the dimension of the outer diameter of the cylindrical formation 4.
  • the relevant thickness of the connecting leg 10 can thus correspond to approximately 0.3 to 0.7 times, furthermore approximately 0.5 times the outer diameter of the cylindrical formation 4.
  • the counterholder 2 forms a first tool carrier 11.
  • the first tool 3 can be arranged in an interchangeable manner in this.
  • a second tool carrier 12 is movable towards this first tool carrier 11 or the first tool 3 accommodated therein, which is preferably designed in one piece and of the same material as a piston shaft 13 extending in the cylindrical configuration 4.
  • the tool carrier 12 forms a receptacle A for the second tool 5, which is also preferably held in an interchangeable manner here.
  • the axial length of the piston shaft 13 can correspond to approximately 1.3 to 2.5 times the maximum displacement path of the hydraulic piston 6.
  • the second tool carrier 12 can be designed with reference to a cross section according to Figure 2a transverse to the axis x be essentially elongated rectangular.
  • the in-use condition of the Figure 2a In the embodiment shown, the vertically extending longitudinal edges are formed in a straight line, while the shorter edges viewed transversely to this are each guided along an arc line.
  • These arc lines have a common radius related to the axis x. The radius is adapted to the diameter of the surrounding casing wall of the cylindrical formation 4.
  • the second tool carrier 12 can, as also shown, have on the outside of the wall in the area of a curved surface a retaining groove 14 running in the axial direction and open towards the casing wall, into which in a normal operating state, as also shown, a Figure 3 shown starting position approximately up to a front surface 59 of the second tool carrier 12 facing the first tool carrier 11.
  • the second tool carrier 12 together with the piston shaft 13 formed in one piece with the tool carrier 12 can be moved by the in the starting position, for example according to Figure 3 between the first and the second tool carrier 11 and 12 resulting free device mouth M, or a corresponding assembly can be carried out in this way. If necessary, a Rotation of the tool carrier 12 by preferably about 90° around the axis x is required.
  • the section of the cylindrical formation 4 which accommodates the second tool carrier can, as also shown, be larger in diameter than the section of the cylindrical formation 4 in which the hydraulic piston 6 is guided.
  • the inner diameter of the section of the cylindrical formation 4 which surrounds the second tool carrier 12 can correspond to approximately 1.05 to 1.2 times the inner diameter of the section which surrounds the hydraulic piston 6.
  • a step is formed on the inside of the wall, which can also form a stop 16 that projects radially inwards and is essentially annular in shape.
  • the second tool carrier 12 can come into contact with this stop 16 in the starting position.
  • the piston shaft 13 which is connected to the second tool carrier essentially concentrically to the axis x, can, according to the illustrations, be designed as a hollow cylinder 23 essentially over its entire axial length. Its outer diameter is smaller than the inner diameter of the relevant section of the cylindrical formation 4, so that an annular space 17 is formed surrounding the piston shaft 13.
  • the outer diameter of the piston shaft 13 can correspond to approximately 0.5 to 0.8 times the inner diameter of the section of the cylindrical formation 4 surrounding the hydraulic piston 6.
  • This spring 18 is supported with its end facing the second tool carrier 12 via an annular pressure disk 19 on the stop 16 of the device head 1, while the end opposite in the axial direction acts against the facing underside of a cover part 20 of the piston shaft 13.
  • the cover part 20 is arranged on the free end of the piston shaft 13, preferably extending radially all the way around the jacket wall of the piston shaft 13.
  • the spring 18 preferably acts against the radial step thus formed.
  • the cover part 20 can be fixed by means of a clamping screw 21 aligned along the axis x, which clamping screw 21 passes through the cover part 20 in the area of an opening 22 aligned concentrically to the axis x.
  • the clamping screw 21 also passes through the hollow cylinder 23 of the piston shaft 13 over its entire length and is in threaded engagement at the end with a correspondingly positioned threaded bore 24 of the second tool carrier 12.
  • the spring 18 loads the second tool carrier 12 in the direction of the Figure 3 shown starting position, in which the tool carriers 11 and 12 or the tools 3 and 5 accommodated therein occupy a maximum distance from each other when viewed in the axial direction.
  • the hydraulic piston 6 is arranged to act on the end of the piston shaft 13 provided with the cover part 20.
  • the hydraulic piston 6 can have a pot-shaped configuration overall, with a piston wall 25 which runs concentrically to the axis x and which, as can be seen, can enclose a partial section of the spring 18 radially on the outside.
  • the piston crown 26 acts with its pot-side surface against the facing end face of the cover part 20, wherein the corresponding piston crown inner surface can further have a central recess 27, for example for receiving the screw head 28 of the clamping screw 21.
  • a step-like recess can be created in this regard, in particular for receiving the cover part 20, preferably over its entire axial thickness and the screw head 28 (see, for example, the illustration in Figure 11 ).
  • the piston crown inner surface can also be used as a support surface for the spring 18, so that a restoring force acts on the hydraulic piston 6 in the direction of the starting position via the spring 18 directly or only indirectly via the cover part 20.
  • a seal 29 is housed in a radially outwardly open, circumferential annular groove for sealing the hydraulic piston 6 against the inner wall 30 of the hydraulic cylinder 7 formed by the cylindrical formation 4.
  • the tooth formation 8 for fixing the support rod 9 can, as is also preferred, be designed with reference to a longitudinal cross section according to Figure 3 laterally offset from the cylindrical formation 4 in the region of the connecting leg 10, preferably in radial overlap with the cylindrical formation 4, that is, when the tooth formation 8 is projected in a direction transverse to the alignment of the axis x and in the direction of the cylindrical formation 4, the tooth formation 8 is essentially received therein.
  • the toothed formation 8 can, as also shown, be formed on only one side of the connecting leg 10.
  • a through-opening 31 can be provided that completely penetrates the connecting leg 10, to which recesses 32 can be provided in the connecting leg 10 that are evenly spaced from one another in the circumferential direction to form the toothed formation 8 and preferably of the same design.
  • twelve such recesses 32 are provided evenly distributed around the through opening 31.
  • the support rod 9, which can be secured via the toothed formation 8, has a counter toothed formation 34 at one support end 33, which according to the embodiment shown can be formed by a number of projections 35 adapted to the number of recesses 32 of the toothed formation 8.
  • These projections 35 can also be designed the same in terms of their cross-sectional design and depth, wherein these projections 35 can be provided uniformly relative to one another in the circumferential direction, corresponding to the arrangement of the recesses 32.
  • the projections 35 are cross-sectionally adapted to the recesses 32, so that in the manner of a Hirth toothing, a positive connection of the support rod 9 with the device head 1 can be achieved due to the engagement of the projections 35 in the recesses 32.
  • an angular fixing of the support rod 9 can be achieved in - based on the embodiment - 30 degree increments. Accordingly, different angles ⁇ can be included between the hydraulic piston axis x, which essentially corresponds to the longitudinal axis of the device head 1, and a longitudinal axis y of the support rod 9.
  • a threaded hole 36 can be provided in the holder end 33, as is also preferred. In the assigned position of the holder rod 9, this threaded hole 36 is in overlap with the through-opening 31 of the device head 1.
  • a fixing screw 37 can be provided which, starting from the side opposite the tooth formation 8, passes through the through hole 31 and engages in the threaded hole 36 of the support rod 9.
  • a handling knob 38 connected to the end opposite the end that interacts with the threaded hole 36, a clamping of the support rod 9, in particular its counter tooth formation 34, with the tooth formation 8 of the device head 1 can be achieved.
  • the support rod 9 can be pivoted about the geometric pivot axis z which is defined by the fixing screw 37 and extends perpendicular to the axes x and y.
  • the device head 1 can also be attached to remote Working positions can be brought together and/or the device head 1 can be supported via the support rod 9 or the like.
  • the cylindrical formation 4 can extend further in the direction of extension of the axis x in a direction facing away from the second tool carrier 2 beyond the hydraulic piston 6, in particular the piston bottom 26. Accordingly, the hydraulic piston 6 is also completely embedded in the cylindrical formation 4 in the starting position.
  • connection receptacle 39 for an adapter part 40.
  • the free inner diameter a in the area of the connection receptacle 39 can be selected to be larger, for example by 1.05 to 1.2 times, compared to the free inner diameter b in the area of the section of the cylindrical formation 4 that forms the hydraulic cylinder 7.
  • an internal thread can be formed on the inside of the wall of the connection receptacle 39 for interaction with an external thread of the adapter part 40 in the region of its circumferential adapter part wall 41.
  • the adapter part wall 41 can furthermore, as is also preferred, have a seal 42 lying in a groove on the outside of the wall and open radially outwards, which acts against the inner wall 30 of the cylindrical formation 4 or the connection receptacle 39.
  • An adapter part base 43 aligned transversely to the axis x leaves an inflow opening 44 for a hydraulic medium in the middle, correspondingly centrally penetrated by the geometric axis x.
  • This inflow opening 44 is on the outside or facing away from the hydraulic piston 6 is surrounded by a blunt adapter connection 45.
  • the surface of the adapter part base 43 facing away from the hydraulic piston 6 can be substantially flush with the associated end face of the cylindrical formation 4.
  • the adapter part 40 can be fixed in the use position screwed into the connection receptacle 39 by a threaded pin 46 penetrating the wall of the connection receptacle 39.
  • the device head 1 can be mounted according to the Figures 1 to 8 illustrated first application can be operated via a separate hydraulic unit 47, wherein a hydraulic hose 48 is arranged between the hydraulic unit 47 and the device head 1 to allow free movement of the device head 1.
  • the hydraulic hose 48 is connected in a sealed manner at one end to the hydraulic unit 47 and at the other end via a hose connection 58 to the device head 1 via the adapter part 40.
  • the hydraulic unit 47 generates the corresponding hydraulic pressure.
  • a pressure reduction can be achieved automatically or as a result of an intervention by the user, but also possibly before the end working position is reached, so that an automatic return of the hydraulic piston 6 and thus of the second tool carrier 12 in the direction of movement d back to the starting position can be achieved.
  • the device head 1 can be mounted as shown in the illustrations of the Figures 9 to 11 shown, be connected to a body tool part 49.
  • the adapter part 40 can also be used for this purpose, if necessary the same adapter part 40 as is used to connect a hydraulic hose 48, but alternatively also an adapter part 40 provided separately for the body tool part 49.
  • the body tool part 49 can be designed as a whole to be essentially elongated and rod-shaped, which basically supports one-handed operation of the device.
  • a possible arrangement of the support rod 9 can provide additional support in the area of the device head 1.
  • the tool W thus composed of the body tool part 49 and the device head 1 can also be used alone without a support rod 9, which is why the support rod 9 is only optionally shown in dash-dotted lines in the illustrations of the second embodiment.
  • a rod-shaped body tool part 49 is from the above-cited EP1519813B1 Particularly with regard to the function of the body tool part 49, the content of this patent is hereby fully incorporated into the disclosure of the present invention, also for the purpose of to include features of this patent in claims of the present invention.
  • the connection with the mentioned EP1519813B1 described object can be seen, for example, with regard to a return valve 50, a tank 51 and a pump tappet 52.
  • a hydraulic pump 53 and an electric motor 54 for the hydraulic pump 53 are provided in a series arrangement.
  • the electrical supply in particular of the electric motor 54, but also of a control unit (not shown) and other electronic components in the body tool part 49, is provided by the arrangement of an accumulator 55.
  • the body tool part 49 has a grip area 56 for the usual grasping of the tool part housing with one hand.
  • an actuation button 57 is provided associated with the grip area 56.
  • the Figures 12 to 16 show a second embodiment of the device head 1, which differs from the previously described embodiment in particular with regard to the cylindrical design 4 and a guide for the holder A or the second tool carrier 12 on the device head 1.
  • the basic mode of operation and operation and the basic structure for the hydraulic effect on the holder A essentially corresponds to the first embodiment described above.
  • the holder A or the second tool carrier 12 is preferably designed as a single piece and more preferably made of the same material as the piston shaft 13.
  • the cylindrical formation 4 extends from the adapter part base 43 only to approximately the rear surface 60 facing away from the end face 59 of the receptacle A in the step-like transition from the piston shaft 13 into the receptacle A. Accordingly, in this embodiment the receptacle A or the second tool carrier 12 (optionally with the second tool 5) is exposed between the mutually facing end faces of the cylindrical formation 4 and the counterholder 2 up to the area of a base-side support and guide in the area of the connecting leg 10.
  • the holder A or the second tool carrier 12 can have a cross-sectional shape according to Figure 14 have a substantially T-shaped guide projection 61.
  • the guide projection 61 can be guided in the usual operating position, as also shown, in a guide groove 62 of the connecting leg 10 directed in the direction of movement d.
  • the T-head 67 of the guide projection 61 can be arranged facing the groove bottom of the guide groove 62.
  • the T-head 67 of the guide projection can have a cross-section according to Figure 14 waisted T-bar 68 to be connected to the second tool carrier 12.
  • the holder A or the second tool carrier 12 is secured against rotation about the axis x, and, moreover, the holder A is also guided linearly when it is displaced in the direction of movement d.
  • the guide groove 62 of the device head 1 can be partially designed as an undercut 63 acting transversely to the direction of movement d over the length 1 considered in the direction of movement d.
  • This undercut 63 can be provided, for example, by the cross-section according to Figure 5 oppositely arranged ribs 64 directed towards one another, which are formed at a distance from the groove bottom 69 and are suitable for engaging in the waisted region of the guide projection 61 between the T-head 67 and the receptacle A.
  • the undercut 63 can, for example, extend over approximately half the length l of the guide groove 62 in the direction of movement d, up to approximately 2/3 or 3/4 of this total length l.
  • this undercut section extends in particular over the usual travel path of the holder A, correspondingly over the last half of the travel path up to the last 3/4 of the travel path, so that, in particular in the critical force-loaded displacement situation of the holder A, appropriate guidance and protection against a displacement of the holder A in a transverse direction to the direction of movement d is provided.
  • This undercut is particularly present in the final working position.
  • the guide groove 62 is preferably not provided with ribs 64, so that in this area there is no undercut interacting with the receptacle A (compare in particular sectional view in Figure 14 ).
  • This offers the advantage of a favorable assembly and disassembly of the holder A, which is formed in one piece with the piston shaft 13, with the holder A being secured against twisting and tilting during, for example, a pressing or cutting process.
  • Figure 16 shows such an assembly or disassembly position of the holder A formed in one piece with the piston shaft 13 or of the second tool carrier 12.
  • the adapter part base 43 with its seal 42 and the piston bottom 26 with its seal 29 can first be removed from the hydraulic cylinder 7, after which the clamping screw 21 is exposed for loosening it. After removing the clamping screw 21, the cover part 20 and the spring 18 can be removed. The piston shaft 13 then lies alone and freely in the hydraulic cylinder 7.
  • the holder A or the second tool carrier 12 can then be displaced in a direction transverse to the direction of movement d (see arrow e), so that the guide projection 61 can leave the guide groove 62.
  • This lifting or tilting movement in the direction of arrow e can be directly superimposed with a pull-out direction f (essentially in the axial direction of the piston shaft 13) for removing the holder A with the piston shaft 13 through the free device mouth m. Assembly is preferably carried out in the reverse order.
  • a plug 65 can also be connected to the hose connection 58 in a captive manner via a band 66.
  • a device head which is characterized in that the second tool 5 can be moved between a starting position and a working end position by means of the hydraulic piston 6, that the hydraulic piston 6 can act on a piston shaft 13 which is formed in one piece with a holder for the second tool 5 and that the piston shaft 13 can be completely received in the cylindrical formation 4 in the starting position.
  • a device head which is characterized in that the device head 1 further has an integrally formed tooth formation 8 for the angularly fixed but changeable arrangement of a support rod 9.
  • a device head which is characterized in that the tooth formation 8 is laterally offset in a longitudinal cross-section of the device head 1, but is designed to overlap the cylindrical formation 4.
  • a device head which is characterized in that the tooth formation 8 is designed to be concentric with respect to a central through-opening 31.
  • a device head which is characterized in that the second tool 5 can be moved by means of the hydraulic piston 6 between a starting position and a working end position, that the piston shaft 13 has a receptacle A which is enlarged transversely to a direction of movement d of the hydraulic piston 6 compared to the piston shaft 13 and is assigned to the second tool 5, and that the receptacle A is held in the working end position transversely to the direction of movement d in an undercut 63 formed on the device head 1.
  • a device head which is characterized in that the holder A for the second tool 5 and the piston shaft are formed in one piece.
  • a device head characterized in that the holder A can be displaced transversely to the direction of movement d in the initial position for assembly and disassembly.
  • a device head which is characterized in that the device head 1 is connected to a hydraulic hose 48, which is connected at the other end to the hydraulic unit 47 for the free mobility of the device head 1 relative to a hydraulic unit 47 generating a hydraulic pressure.
  • a device head characterized in that the device head 1 is rigidly connected to a body tool part 49 in which the hydraulic unit is arranged.
  • a device head which is characterized in that the second tool 5 is movable between a starting position and a working end position by means of the hydraulic piston 6 and that the hydraulic piston 6 is completely accommodated in the cylindrical formation 4 in the starting position.
  • a device head which is characterized in that the cylindrical formation 4 has a connection receptacle 39 for the body tool part 49 or the hydraulic hose 48 in relation to the starting position of the hydraulic piston 6 in continuation of a direction of movement d of the hydraulic piston 6 from the working end position into the starting position outside the area surrounding the hydraulic piston 6.
  • connection receptacle 39 has a free inner diameter a which is larger than the diameter b of the cylindrical formation 4 in a region in which the cylindrical formation 4 surrounds the hydraulic piston 6 in the initial position.
  • a device head which is characterized in that the hydraulic piston 6 consists of a piston shaft 13 and a cover part 20 arranged at the end facing away from the second tool 5.
  • a device head characterized in that the piston shaft 13 is designed as a hollow cylinder 23 over part of its length.
  • a device head which is characterized in that a clamping screw 21 holds the cover part 20 by penetrating the hollow cylinder 23.
  • a device head which is characterized in that an adapter part 40 can be arranged on the connection receptacle 39 and that a piston bottom 26 in the starting position is opposite a piston-side end face of the adapter part 40.
  • the invention also relates to designs in which individual features mentioned in the above description are not implemented, in particular insofar as they are clearly dispensable for the respective intended use or can be replaced by other technically equivalent means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Actuator (AREA)
  • Portable Power Tools In General (AREA)
  • Earth Drilling (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
EP24154342.0A 2019-10-11 2020-10-08 Tête d'outil d'un outil à actionnement hydraulique Pending EP4349532A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019127497.4A DE102019127497A1 (de) 2019-10-11 2019-10-11 Gerätekopf eines hydraulisch betätigbaren Werkzeugs
PCT/EP2020/078276 WO2021069587A1 (fr) 2019-10-11 2020-10-08 Tête de dispositif d'un outil à commande hydraulique
EP20790233.9A EP4041471B1 (fr) 2019-10-11 2020-10-08 Tête de dispositif d'un outil à commande hydraulique

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP20790233.9A Division EP4041471B1 (fr) 2019-10-11 2020-10-08 Tête de dispositif d'un outil à commande hydraulique
EP20790233.9A Division-Into EP4041471B1 (fr) 2019-10-11 2020-10-08 Tête de dispositif d'un outil à commande hydraulique

Publications (2)

Publication Number Publication Date
EP4349532A2 true EP4349532A2 (fr) 2024-04-10
EP4349532A3 EP4349532A3 (fr) 2024-09-04

Family

ID=72852631

Family Applications (2)

Application Number Title Priority Date Filing Date
EP24154342.0A Pending EP4349532A3 (fr) 2019-10-11 2020-10-08 Tête d'outil d'un outil à actionnement hydraulique
EP20790233.9A Active EP4041471B1 (fr) 2019-10-11 2020-10-08 Tête de dispositif d'un outil à commande hydraulique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20790233.9A Active EP4041471B1 (fr) 2019-10-11 2020-10-08 Tête de dispositif d'un outil à commande hydraulique

Country Status (7)

Country Link
US (2) US12151356B2 (fr)
EP (2) EP4349532A3 (fr)
JP (1) JP7620009B2 (fr)
KR (1) KR20220080152A (fr)
CN (2) CN120901174A (fr)
DE (1) DE102019127497A1 (fr)
WO (1) WO2021069587A1 (fr)

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DE102020131036A1 (de) * 2020-10-12 2022-04-14 Gustav Klauke Gmbh Hydraulisch betätigbare, als Handgerät ausgebildete Arbeitsvorrichtung
USD1042068S1 (en) * 2021-05-19 2024-09-17 Gustav Klauke Gmbh Hydraulic press tool
USD1037815S1 (en) 2021-05-28 2024-08-06 Gustav Klauke Gmbh Press head for a hydraulic press tool
EP4245466B1 (fr) * 2022-03-14 2025-01-29 Dubuis et Cie Outil hydraulique portable comprenant une poignée
US12263570B2 (en) 2022-06-06 2025-04-01 Enerpac Tool Group Corp. Hydraulic tools
EP4536444A1 (fr) 2022-06-10 2025-04-16 Gustav Klauke GmbH Outil à main
US20250353159A1 (en) 2022-06-10 2025-11-20 Gustav Klauke Gmbh Hand tool
US12403580B2 (en) * 2022-11-23 2025-09-02 Hubbell Incorporated Member for adjusting force application in reciprocating assembly
KR102699972B1 (ko) * 2024-06-07 2024-08-29 (주)대진유압기계 휴대용 동배관 락링 압착 유압 툴

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EP1084798B1 (fr) 1999-09-15 2009-06-10 Gustav Klauke GmbH Outil de pressage hydraulique
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Also Published As

Publication number Publication date
US20250042010A1 (en) 2025-02-06
EP4041471A1 (fr) 2022-08-17
JP7620009B2 (ja) 2025-01-22
US12151356B2 (en) 2024-11-26
CN114728325A (zh) 2022-07-08
WO2021069587A1 (fr) 2021-04-15
KR20220080152A (ko) 2022-06-14
EP4349532A3 (fr) 2024-09-04
JP2023504764A (ja) 2023-02-07
US20230405788A1 (en) 2023-12-21
DE102019127497A1 (de) 2021-04-15
EP4041471B1 (fr) 2024-03-06
CN114728325B (zh) 2025-07-22
CN120901174A (zh) 2025-11-07

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