EP1084798B1 - Outil de pressage hydraulique - Google Patents

Outil de pressage hydraulique Download PDF

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Publication number
EP1084798B1
EP1084798B1 EP00116914A EP00116914A EP1084798B1 EP 1084798 B1 EP1084798 B1 EP 1084798B1 EP 00116914 A EP00116914 A EP 00116914A EP 00116914 A EP00116914 A EP 00116914A EP 1084798 B1 EP1084798 B1 EP 1084798B1
Authority
EP
European Patent Office
Prior art keywords
piston
head
hand
shank
pressing apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00116914A
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German (de)
English (en)
Other versions
EP1084798A2 (fr
EP1084798A3 (fr
Inventor
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
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Application filed by Gustav Klauke GmbH filed Critical Gustav Klauke GmbH
Publication of EP1084798A2 publication Critical patent/EP1084798A2/fr
Publication of EP1084798A3 publication Critical patent/EP1084798A3/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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

Definitions

  • the invention relates to a hydraulic hand pressure device according to the features of the preamble of claim 1.
  • Such a hand press device is, for example, from the DE-A1 19716 804 known. This shows a hand press with a screwed to the tool carrier of a replaceable head device piston skirt, which latter is formed integrally with the hydraulically actuated piston head.
  • a hydraulic hand pressure device according to the features of the preamble of claim 1 is known.
  • the invention has the object to design the known hydraulic hand press device with regard to a simplification of the head change device in an advantageous manner.
  • an exchange device head each having a piston skirt with return spring.
  • the piston skirt is assigned to the device head.
  • the displaceably arranged in the device head tool carrier is by the further arranged return spring after removal of the device head of the hand press always in a basic position, ie in one Held open position, which corresponds to the open position of the tool carrier in the hand pressing device associated position of the device head of the basic position, ie return position of the hydraulically actuated piston or piston head.
  • various replacement device heads can be in a standby position, ie in an open position, for example for loading or pressing tools.
  • the hydraulically actuated piston or the piston head is in its definable return position return position.
  • the pot-shaped or disk-shaped piston head which is provided with a hydraulic seal, for example in the form of an O-ring seal with a support ring, remains in the device-side hydraulic cylinder.
  • the piston stem is a separate part and is assigned to the device head together with the return spring.
  • the manual press basic unit can be preassembled, for example, after repair work, filled with oil and tested. If necessary, an assignable device head is mounted.
  • repair module head or basic devices can be exchanged in a simple manner in modules.
  • the exchange is due to the bipartite of the piston on the dry side of the device. The hydraulic side remains securely closed by the piston head remaining in the device, eliminating the need for cumbersome venting of the system.
  • the piston skirt only pressurizes the piston head without being connected to it. It is provided a two-part piston, with a hand pressing the associated piston head and the device head associated piston skirt.
  • the hydraulically acted upon actuation of the device piston head presses on the piston shaft connected to the latter tool carrier in the working position for Velpressing or cutting objects.
  • the piston skirt moves with the tool carrier under pressure of the piston head back to the normal position. This return movement is preferably effected by acting on the piston shaft return spring.
  • Piston shaft and piston head are not connected to each other, so that a decrease in the piston head provided with the device head has no influence on the piston head. The latter remains in each case in its position, preferably in the return position, for sealing the rearward against this pending oil.
  • the piston skirt is detachably connected in operation to the piston head.
  • the piston is formed in two parts, with a Handpreß the basic unit associated piston head and the device head associated piston skirt.
  • a releasable connection between piston skirt and piston head may be provided, which is accessible from the outside for removal of the device head of the hand pressing device.
  • Conceivable here is an axial screw or a bayonet connection between the piston skirt and piston head.
  • this connection is solvable, after which the head of the device is in the simplest way removable from the hand press. Again, the sealing piston head remains in the base unit.
  • a compression spring is bound to return the piston to the piston skirt. Accordingly, the piston shaft, even with the device head removed from the device, always in a basic position - preferably an open position of tools - acted upon. It is further provided that the piston head piston side has a centering recess or a centering projection and that the piston shaft piston head side has a centering projection or a Zentrierausappelung. According to this embodiment, the two parts of the two-part piston transmit each other only pressure and lateral forces. In addition, given by the design centering properties for accurate axial alignment of the piston skirt.
  • a cylinder head screw mounted with protruding cylinder head centrally is for centering on the piston head, wherein the cylinder head comes into a corresponding recess of the piston head for receiving.
  • the device head-side return spring comprises the piston skirt and one end of the device head and the other end in the region of the free, the piston head associated end of the piston skirt is supported on this.
  • a radial expansion can be provided on the piston shaft, which at the same time forms a centering projection.
  • the device-side piston head is disc-shaped in a preferred embodiment and has a radial seal.
  • the piston head has a piston shaft side pot wall whose outer diameter is adapted approximately to the inner diameter of the hydraulic cylinder.
  • the pot wall takes in the coupled state of the device head and hand pressing the piston skirt, possibly with the surrounding return spring.
  • the height of the pot wall in the axial direction corresponds to more than a quarter of the shaft length.
  • the pot wall can also serve as an end stop during the pressing process, wherein the end ring surface of the pot wall occurs against a radially inwardly projecting into the path of the collar of the device head.
  • the hydraulic cylinder at its device head end has an external thread and the device head is connected by means of this thread with the hydraulic cylinder.
  • the device head can be unscrewed from the handset in the simplest way with simultaneous withdrawal of the piston skirt together with the return spring from the hydraulic cylinder, wherein the remaining in the basic unit piston head retains its position.
  • the connection position between Device head and hydraulic cylinder is set by an index pin. As a result, a defined connection position is given. When the predefined connection position is reached, the index pin enters a recess in the hydraulic cylinder in a spring-assisted manner.
  • This counterpart part on the one hand forms a stop surface for the tool carrier. At the opposite side of this stop surface is preferably supported on the piston shaft acting on the return spring.
  • this counter-holder part is supported against a device head-side stage and is plugged in the simplest way.
  • the counter-holder part is screwed into the, the hydraulic cylinder receiving bore of the device head using the same thread for connecting the device head to the hydraulic cylinder.
  • the device head has a handle. This is further preferably designed so that the handle extends in the direction of movement of the piston or the hydraulic cylinder.
  • the handle is formed by a transition on both sides in the device head arch part.
  • FIG. 1 Shown and described is first with reference to Fig. 1 an electric motor operated, hydraulic hand press 1.
  • a pressing device is from the above-mentioned DE-A1 197 16 804 known.
  • an electric motor is arranged.
  • the drive of this electric motor via a, integrated in a handle 2 accumulator 3.
  • a finger-operable switch 4 is pumped from a reservoir oil into a pressure chamber, whereby a piston, according to the invention a piston head 5 is moved in the direction of its working end position.
  • Handpreß réelle 1 is designed as a lever-operated implement.
  • the pressure required for the displacement of the piston head 5 is therefore not electromotive, but manually operated via a pump lever 6.
  • the tool carrier 10, 11 can be equipped with pressing tools, not shown.
  • FIG. 6 and 7 is another replacement device head 9 shown.
  • Another replacement device head 9 shows Fig. 8 , This is designed as a universal device head for receiving different tools. Regarding the design of this device head 9 in Fig. 8 will be on the non-pre-published German patent application 199 26 481 directed.
  • each replacement head 9 is both the Handpreß réelle 1 according to Fig. 1 as well as the pump lever hand press 1 according to Fig. 6 assignable.
  • the substantially pot-shaped hydraulic cylinder 8 is the device head 9 facing open formed and serves for a innenwandig for guiding the piston head 5 and the other outside to connect the hand pressing device 1 with the device head 9, to which the hydraulic cylinder 8 externally an external thread 12th has.
  • the first disk-shaped piston head 5 is provided with a hydraulic seal 7, for example in the form of an O-ring seal with support ring, for sealing against the hydraulic cylinder inner wall.
  • the piston head 5 is provided with a coaxially aligned pot wall 13, which is externally supported on the inner wall of the hydraulic cylinder 8.
  • the height of the pot wall 13 - measured in the direction of displacement of the piston head 5 - corresponds approximately to half of the measured depth of the hydraulic cylinder 8 measured in the same direction.
  • the device-side piston head 5 has on the device head 9 associated side on a circular, central stepped recess, a first diameter-larger centering recess 14 and a second subsequent diameter-reduced recess 15th
  • the in the Fig. 1 to 5 shown device head 9 has a displaceable by means of Handpreßellos 1 tool carrier 10 and an opposed fixed tool carrier eleventh
  • the displaceable tool carrier 10 is provided with a piston shaft 16, which according to the illustrated embodiment is formed integrally with the tool carrier 10.
  • the piston shaft 16 may also be screw-connected to the tool carrier 10, for example.
  • the piston acting on the tool carrier 10 is designed in two parts, with part-of the piston head 5 being arranged on the device side and the second part -the piston shaft 16 being arranged on the device head side.
  • the piston shaft 16 is stepped in the transition region to the tool carrier 10 such that in this area an opposite the piston shaft diameter enlarged, acting in the opening direction of the device head 9 Autsch makeup 17 is formed.
  • This stop surface 17 occurs in the open position according to Fig. 2 against a, inserted into one of the piston shaft 16 passing through hole 18 inserted counter-holder 19.
  • the latter is annular and is abutment-limited against a step 20 of the bore 18 is inserted.
  • the piston shaft 16 passes centrally through the counter-holder 19 centering this.
  • the bore 18 is diameter-matched to the outer diameter of the hydraulic cylinder 8 and has a male thread 12 assignable internal thread 21st
  • the piston shaft diameter corresponds approximately to half the diameter of the bore 18th
  • piston shaft 16 passes through the bore 18 in the middle and occurs with its free end about a quarter of its total length from the bore 18.
  • This free end of the piston shaft 16 is provided with a front side, opposite the piston shaft diameter enlarged support disc 23 which serves on the one hand the support of the compression spring 22 and on the other hand as a centering projection 24 for receiving in the centering recess 14 of the piston head 5.
  • the centering projection diameter is adapted to the centering diameter of the piston head 5.
  • the thickness measured in the axial direction of the centering projection 24 or the support disk 23 corresponds to the correspondingly measured depth of the centering recess 14.
  • the support disk 23 is fixed to the piston shaft 16 by means of an axially arranged cylinder head screw 25, wherein the cylinder head 26 projects beyond the support disk 23.
  • the provided in the piston head 5 second recess 15 is adapted to the diameter and the measured height of the cylinder head 26 in the axial direction.
  • the mentioned compression spring 22 is supported, as described, at one end on the piston shaft side support plate 23 and the centering projection 24 formed thereby and at the other end on the, at the same time the stop for the piston shaft 16 and the movable tool carrier 10 forming counter-holder 19 from.
  • the piston skirt 16 together with the tool carrier 10 is always in an open position Fig. 2 spring biased.
  • the device head 9 as shown in the Fig. 1 to 5 is also provided with a handle 27 which extends in the direction of movement of the piston shaft 16 and the displaceable tool carrier 10.
  • the handle 27 is arranged on the underside of the device head 9, wherein the handle 27 is formed by a on both sides in the device head 9 over arch part 28.
  • the device head 9 is the simplest way the Handpreß réelle 1 assignable. Thus, the device head 9 is pushed over the hydraulic cylinder 8 and screw-connected by means of the device-side external thread 12 and the meshing, device head-side internal thread 21.
  • the predetermined connection position according to Fig. 3 between the device head 9 and the hydraulic cylinder 8 is defined by an index pin 29. The latter is arranged on the device head 9 and occurs in the predefined connection position spring-assisted in a radially outwardly formed on the hydraulic cylinder 8 radial groove 30 a.
  • the pot wall 13 of the piston head 5 includes a portion of the compression spring 22nd
  • the piston head 5 and the piston shaft 16 transmit mutually only compressive forces and beyond by the positive reception of the centering projection 24 in the centering 14 also lateral forces. Traction forces are not transmitted by the missing connection.
  • the hydraulic cylinder 8 or the receptacle formed thereby for a replacement device head 9 as shown in the Fig. 6 and 7 is formed equal to the cylinder of the previously described hand-pressing device.
  • the piston skirt 16 is formed as a hollow cylindrical component with an on, the piston head 5 assignable end integrally formed centering projection 24, which is also the support for the piston shaft 16 comprehensive return spring 22.
  • the cooperating with the anvil 19 stop surface of the piston shaft 16 is formed here by a shell side arranged on the shaft ring 31.
  • the free end region of the piston skirt 16 can also be formed with an integrally formed radial collar for forming the centering projection 24, on which a support disk 23 pushed over the piston skirt 16 is supported for the return spring 22, facing away from the piston head.
  • the counter-holder for guiding the piston shaft 16 may also be formed as a radially inwardly projecting annular collar of the device head 9.
  • module head 9 or basic units 1 can be exchanged in a simple manner in modules.
  • the user can switch between, for example, pressing and cutting device heads or between electric or lever-actuated basic devices.
  • Handpreßtechnik 1 can also be pre-assembled according to this design, filled with oil and tested, after which, if necessary, a suitable device head 9 is mounted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Actuator (AREA)
  • Portable Power Tools In General (AREA)
  • Automatic Assembly (AREA)
  • Valve Device For Special Equipments (AREA)
  • Lubricants (AREA)
  • Shearing Machines (AREA)
  • Forging (AREA)

Claims (15)

  1. Outil de pressage hydraulique (1) avec un vérin hydraulique (8), dans lequel un piston à sollicitation hydraulique amovible pour la réalisation d'un processus de pressage ou de coupe, avec une tête de piston (5) côté outil et un porte-outil (10) qui fait partie d'une tête d'outil (9) interchangeable qui est reliée à un corps de piston (16), la tête d'outil (9) interchangeable présentant des ressorts de rappel (22) pour le rappel du piston sur le corps de piston (16).
  2. Outil de pressage selon la revendication 1, caractérisé en ce que le corps de piston (16) pressurise seulement la tête de piston (5) sans être relié à celle-ci.
  3. Outil de pressage selon la revendication 1 ou 2, caractérisé en ce que le corps de piston (16) est relié en fonctionnement de manière amovible à la tête de piston (5).
  4. Outil de pressage selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'un ressort de compression (22) est accroché pour le rappel du piston sur le corps de piston (16).
  5. Outil de pressage selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la tête de piston (5) présente côté corps de piston un évidement de centrage (14) ou une saillie de centrage et en ce que le corps de piston (16) présente côté tête de piston une saillie de centrage (24) ou un évidement de centrage.
  6. Outil de pressage selon la revendication 5, caractérisé en ce que dans le corps de piston (16), une vis à tête cylindrique (25) avec une tête cylindrique (26) qui dépasse est montée de manière centrée côté tête de piston pour le centrage sur la tête de piston (5), la tête cylindrique (26) venant en prise dans un évidement (15) correspondant de la tête de piston (5).
  7. Outil de pressage selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la tête de piston (5) présente une paroi en forme de pot (13) côté corps de piston.
  8. Outil de pressage selon la revendication 7, caractérisé en ce que la hauteur de la paroi en forme de pot (13) correspond à plus d'un quart de la longueur du corps.
  9. Outil de pressage selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le vérin hydraulique (8) présente sur son extrémité côté tête d'outil un filetage extérieur (12) et la tête d'outil (9) est reliée au moyen de ce filetage (12) au vérin hydraulique (8).
  10. Outil de pressage selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la jonction entre la tête d'outil (9) et le vérin hydraulique (8) est déterminée par un doigt d'indexage (29).
  11. Outil de pressage selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le corps de piston (16) est réalisé en forme étagée et est relié à la tête d'outil (9) au moyen d'un élément de contre-appui (19) reposant contre la surface étagée, en appui contre la tête d'outil (9).
  12. Outil de pressage selon la revendication 11, caractérisé en ce que l'élément de contre-appui (19) est vissé dans le perçage de la tête d'outil (9) recevant le vérin hydraulique (8).
  13. Outil de pressage selon l'une quelconque des revendications 1 à 12, caractérisé en ce que la tête d'outil (9) présente une poignée (27).
  14. Outil de pressage selon la revendication 13, caractérisé en ce que la poignée (27) s'étend dans la direction de déplacement du piston ou du vérin hydraulique (8).
  15. Outil de pressage selon l'une quelconque des revendications 13 ou 14, caractérisé en ce que la poignée (27) est formée par un élément courbe (28) se poursuivant de part et d'autre par la tête d'outil (9).
EP00116914A 1999-09-15 2000-08-05 Outil de pressage hydraulique Expired - Lifetime EP1084798B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944229 1999-09-15
DE19944229.0A DE19944229B4 (de) 1999-09-15 1999-09-15 Hydraulisches Handpressgerät und auswechselbarer Gerätekopf hierfür

Publications (3)

Publication Number Publication Date
EP1084798A2 EP1084798A2 (fr) 2001-03-21
EP1084798A3 EP1084798A3 (fr) 2003-06-11
EP1084798B1 true EP1084798B1 (fr) 2009-06-10

Family

ID=7922130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00116914A Expired - Lifetime EP1084798B1 (fr) 1999-09-15 2000-08-05 Outil de pressage hydraulique

Country Status (6)

Country Link
US (1) US6718870B1 (fr)
EP (1) EP1084798B1 (fr)
JP (1) JP4744680B2 (fr)
AT (1) ATE433367T1 (fr)
DE (2) DE19944229B4 (fr)
TW (1) TW477738B (fr)

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US9808853B2 (en) 2011-08-02 2017-11-07 Gustav Klauke Gmbh Jaw pair for punching out holes
WO2019068608A1 (fr) 2017-10-02 2019-04-11 Gustav Klauke Gmbh Outil à main
WO2021069587A1 (fr) 2019-10-11 2021-04-15 Gustav Klauke Gmbh Tête de dispositif d'un outil à commande hydraulique
DE202021101592U1 (de) 2021-03-25 2022-07-04 Gustav Klauke Gmbh Werkzeugkopf für ein Werkzeug
WO2022200543A1 (fr) 2021-03-25 2022-09-29 Gustav Klauke Gmbh Tête d'outil pour un outil
WO2023237776A1 (fr) 2022-06-10 2023-12-14 Gustav Klauke Gmbh Outil à main
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US9808853B2 (en) 2011-08-02 2017-11-07 Gustav Klauke Gmbh Jaw pair for punching out holes
WO2019068608A1 (fr) 2017-10-02 2019-04-11 Gustav Klauke Gmbh Outil à main
WO2021069587A1 (fr) 2019-10-11 2021-04-15 Gustav Klauke Gmbh Tête de dispositif d'un outil à commande hydraulique
EP4349532A2 (fr) 2019-10-11 2024-04-10 Gustav Klauke GmbH Tête d'outil d'un outil à actionnement hydraulique
DE202021101592U1 (de) 2021-03-25 2022-07-04 Gustav Klauke Gmbh Werkzeugkopf für ein Werkzeug
WO2022200543A1 (fr) 2021-03-25 2022-09-29 Gustav Klauke Gmbh Tête d'outil pour un outil
DE102022106499A1 (de) 2021-03-25 2022-09-29 Gustav Klauke Gmbh Werkzeugkopf für ein Werkzeug
WO2023237776A1 (fr) 2022-06-10 2023-12-14 Gustav Klauke Gmbh Outil à main
WO2023237775A1 (fr) 2022-06-10 2023-12-14 Gustav Klauke Gmbh Outil à main

Also Published As

Publication number Publication date
EP1084798A2 (fr) 2001-03-21
JP4744680B2 (ja) 2011-08-10
ATE433367T1 (de) 2009-06-15
DE19944229A1 (de) 2001-03-22
US6718870B1 (en) 2004-04-13
JP2001105352A (ja) 2001-04-17
DE50015656D1 (de) 2009-07-23
DE19944229B4 (de) 2016-07-28
TW477738B (en) 2002-03-01
EP1084798A3 (fr) 2003-06-11

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