EP1724101B1 - Procédé de protection pour outils de pressage - Google Patents

Procédé de protection pour outils de pressage Download PDF

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Publication number
EP1724101B1
EP1724101B1 EP05010731A EP05010731A EP1724101B1 EP 1724101 B1 EP1724101 B1 EP 1724101B1 EP 05010731 A EP05010731 A EP 05010731A EP 05010731 A EP05010731 A EP 05010731A EP 1724101 B1 EP1724101 B1 EP 1724101B1
Authority
EP
European Patent Office
Prior art keywords
drive
crimping
sensor
pressing
stem
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.)
Not-in-force
Application number
EP05010731A
Other languages
German (de)
English (en)
Other versions
EP1724101A1 (fr
Inventor
Werner Dinkel
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.)
Wezag GmbH and Co KG
Original Assignee
Wezag GmbH Werkzeugfabrik
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 Wezag GmbH Werkzeugfabrik filed Critical Wezag GmbH Werkzeugfabrik
Priority to DE502005010975T priority Critical patent/DE502005010975D1/de
Priority to ES05010731T priority patent/ES2359067T3/es
Priority to AT05010731T priority patent/ATE498490T1/de
Priority to EP05010731A priority patent/EP1724101B1/fr
Publication of EP1724101A1 publication Critical patent/EP1724101A1/fr
Application granted granted Critical
Publication of EP1724101B1 publication Critical patent/EP1724101B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/285—Arrangements for preventing distortion of, or damage to, presses or parts thereof preventing a full press stroke if there is an obstruction in the working area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • B30B1/16—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by fluid-pressure means

Definitions

  • the present invention relates to a method for protecting an operator in press machines (hereinafter "press machine”) according to claim 1.
  • EP 0 983 840 B1 discloses a press in which the actual pressing of a workpiece takes place via a cam drive.
  • the cam has a bulge, in which a cam follower is displaceable for alignment of the bulge with the pressing direction, so that a relative movement of the press inserts is independent of the operation of the cam drive is possible for the insertion of the workpiece between dies.
  • US 3,613,981 and US 6,148,985 relate to protective arrangements for presses, in which the relative movement is brought about by the drive of the pressing arrangement both during the actual pressing operation and during the insertion of the workpiece in the press inserts. If a body part of the operator is located between the press inserts, the drive movement of the drive is interrupted.
  • EP 0 449 664 A2 discloses a method according to the preamble of Ansprunchs 1 and discloses a hydraulic actuating cylinder which carries a tool in an end region.
  • the hydraulic actuating cylinder is guided in a vertical direction displaceable in a bore of a tripod.
  • the movement in the hole is limited by in that a radially oriented guide pin is slidably guided in a vertically oriented slot of the stand.
  • the hydraulic actuating cylinder can be set from an upper end position defined by the upper end of the oblong hole, in which a workpiece can be arranged below the tool, to a likewise predetermined by an end region of the oblong hole lower end position to be moved. If a switch detects that the hydraulic actuating cylinder has reached the lower end position, the vertical displacement degree of freedom of the hydraulic actuating cylinder is pneumatically locked relative to the stand, so that the hydraulic actuating cylinder is rigidly fastened to the stand. At the same time, the hydraulic actuation of the hydraulic actuating cylinder is released, with which the actual pressing stroke can take place. About an adjustment of the hydraulic adjusting cylinder, the position of the workpiece at the beginning of the hydraulic pressing operation can be changed.
  • the object is achieved by means of a method according to the wording of claim 1.
  • Proposed is a method for protecting an operator in press machines, which uses at least one detection means or a sensor (hereinafter “sensor”) for the detection of the closing gap or Verpressschlitzes (hereinafter “Verpressschlitz”), the sensor in such a way with a drive for the Pressing or clamping (hereinafter “compression”) is operatively connected, that with a size of Verpressschlitzes equal to or greater than a predetermined distance value, the drive is not activated or the pressing process is not feasible or blocked.
  • sensor a sensor for the detection of the closing gap or Verpressschlitzes
  • compression a drive for the Pressing or clamping
  • the drive via a slot, which forms a degree of freedom on the one hand for non-activated drive.
  • a movement takes place along the oblong hole with subsequent performance of the actual pressing process, for which a pin transmits the drive movement and force in an end region of the oblong hole.
  • a mark, a pin, a cam, a recess or the like is arranged , by means of which or by means of which or whose position the size of the injection slot can be determined and which or which is operatively connected to the sensor in order to block or deactivate the drive of the pressing tool when the predetermined value is exceeded.
  • a second drive is provided for opening the pressing machine, in particular after performing pressing.
  • a further drive means such as a clamping member or a tension spring is provided to drive a press insert, in particular when inserting a workpiece to be pressed or clamped in the closing direction with a force which is such that no injuries to human body parts can be caused.
  • the second drive engages the above-mentioned part of the pressing machine as preferably on the pin, cam or in the recess or on and is in particular hingedly connected to said part, wherein the second drive is so operatively connected to the sensor when opening the press inserts by means of the second drive, the drive of the pressing machine is blocked or deactivated after exceeding the predetermined distance value of the injection slot.
  • the entire part is according to a variant with deactivated or blocked drive for the pressing process in the open position and / or in the closing direction, optionally by means of the second and / or further drive, and / or manually stored freely movable or displaceable.
  • the arrangement defined according to the invention is particularly suitable for the protection of an operator of a pneumatic, hydraulic or electric crimping press, in particular when using for connecting cables to a cable lug, to a tube terminal, a cable adapter and the like.
  • FIG. 1 shows schematically in section the most important components of an inventive pressing or clamping device 1, suitable for example for connecting an electrical cable to a cable lug by pressing or crimping.
  • the pressing tool or the crimping machine 1 initially has a pressing tool insert consisting of an upper and a lower pressing or crimping insert 3 and 5 having interposed recesses 7, in which the pressing process is carried out.
  • the upper crimping insert 3 is held on a cylinder-like plunger 9 which is movable in a sliding bearing 11 in the lifting or lowering direction.
  • a transverse cam 13 Arranged in the ram is arranged a transverse cam 13, on which a lever-like carrier 15 for lifting the crimping or pressing insert 3 articulated on the contour 17 and engages.
  • the lever-like carrier 15 is rotatably mounted about an axis 19. Furthermore, the lever-like carrier 15 is connected to a tension spring 23, whose function will be discussed later. The lever-like carrier 15 is liftable by means of a lifting cylinder 22 and a piston rod 21, which via a pneumatic, hydraulic or electrical supply 24 can be actuated. Finally, the lever-like carrier 15 is located laterally on a sensor 27, which is connected via a circuit 25 to the drive 31, 33 and 34 for the operation of the pressing or clamping tool 1.
  • FIG. 1 is the starting position shown for example when not operating the press machine.
  • the crimping or pressing tool To insert now a workpiece to be pressed into the insert, such as for pressing or crimping a cable with a connection shoe, the crimping or pressing tool must first be opened, which for example, by lifting the upper crimping or pressing insert 3 takes place.
  • the lifting of this insert by means of the lever-like driver 15, which is done by means of the pressure cylinder 22, for example, by introducing compressed air upwardly pressed piston 21.
  • FIG. 1 shows the pin 39 at one end of the slot 29 arranged with closed crimping
  • FIG. 2 the pin 39 at the opposite end of the slot 29 shows, with fully open crimping.
  • the free displacement or the freewheel is ensured by the storage of the plunger 9 in the sliding bearing 11th
  • the two crimping inserts 3 and 5 must be moved closer to one another for the insertion of the workpieces or parts to be pressed FIG. 3 is shown.
  • the tensile force applied by the tension spring 23 is so small that even when accidentally inserting a finger or a hand between the two crimping dies 3 and 5, there is no risk of injury and thus the operating personnel can safely place the tool parts 4 to be pressed into one of the recesses 7 of the two crimping tools 3 and 5 insert.
  • FIG. 4 it can be seen clearly that in the pressure or pressure cylinder 31 of the plunger 33 has been driven forward and connected to the piston rod 32, which acts on the lever 35.
  • the reversing lever in turn drives the pressure lever 37 down, which in turn pushes in the slot 29 sliding the cylinder plunger 9 down, which is arranged to slide freely in the slide bearings 11.
  • the pressing is done by the two crimping dies 3 and 5 are pressed against each other, whereby the inserted in the central recess 7 workpiece 4 and the workpieces such as a wire connection and a cable lug are pressed or clamped.
  • the drive itself can of course be chosen differently and with reference to the FIGS. 1 to 4 mentioned pneumatic or hydraulic drive is only one option.
  • a pressing or clamping tool can also be operated, for example, electrically or electromechanically.
  • the second and the further drive can be chosen differently, such as in that the second drive has a tension spring and the other drive is operated pneumatically, hydraulically or electromechanically. Yes, it is even possible to manually actuate both the second and the further drive, since due to the freewheel of the cylinder plunger 9 in the disabled or blocked drive for the pressing or clamping operation this is easily movable both in the opening direction and in the closing direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Gripping On Spindles (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Arc Welding In General (AREA)
  • Ceramic Products (AREA)

Claims (10)

  1. Procédé destiné à protéger une personne de service sur des presses, comportant un capteur (27), qui est destiné à détecter l'intervalle de sécurité et qui est en liaison active avec un système d'entraînement (31, 33) pour le processus de pressage, de telle sorte que, lorsque la valeur de l'intervalle de sécurité est égale ou supérieure à une valeur d'écartement (d) prédéfinie, le système d'entraînement (31, 33) ne peut pas être activé ou le processus de pressage est bloqué ou ne peut pas être mis en oeuvre, sachant que
    a) lorsque le système d'entraînement (31, 33) n'est pas activé ou est bloqué, un coulisseau (9), qui maintient un insert de presse supérieur (3), est monté librement mobile tant dans le sens ouvert que dans le sens de fermeture,
    caractérisé en ce que
    b) dans le coulisseau (9) est réalisé un trou oblong (29) qui s'étend dans le sens d'ouverture et le sens de fermeture et dans lequel s'engage une broche (39) qui est reliée au système d'entraînement (31, 33) pour le processus de pressage et qui, lorsque le système d'entraînement n'est pas activé, est librement mobile dans le trou oblong par rapport et le long du trou oblong au moment de l'ouverture ou de la fermeture de l'un au moins des inserts de presse,
    c) un mouvement de fermeture jusqu'à un franchissement de la limite inférieure d'une distance de sécurité peut être provoqué pour la mobilité libre,
    d) un franchissement de la limite inférieure de la distance de sécurité est détectée par le capteur, qui annule alors la désactivation du système d'entraînement ou le blocage ou l'impossibilité d'exécution du processus de pressage, à la suite de quoi le pressage proprement dit peut s'effectuer, et
    e) lorsque le système d'entraînement (31, 33) est activé, le système d'entraînement pousse le coulisseau (9) dans le trou oblong (29) en le faisant coulisser vers le bas et ensuite, par le système d'entraînement (31, 33), les deux inserts de presse (3, 5) sont pressés l'un contre l'autre,
    f) sur le coulisseau (9) de la presse, qui peut être déplacé ou actionné pour le processus de pressage ou de serrage, ou sur un élément qui est relié au coulisseau, est disposé un marquage, une broche, une came (13) ou un évidement, par l'intermédiaire duquel ou de laquelle ou par la position duquel ou de laquelle peut être déterminée la dimension de l'intervalle de sécurité et lequel ou laquelle est en liaison active avec le capteur (27) pour bloquer ou désactiver le système d'entraînement (31, 33) de la presse dans le cas d'un franchissement de la limite supérieure de la valeur (d) prédéfinie.
  2. Procédé selon la revendication 1, caractérisé en ce qu'une ouverture des inserts de presse (3, 5) est possible par l'intermédiaire d'un deuxième système d'entraînement (21, 22).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'il est prévu un moyen d'entraînement (23) supplémentaire, par l'intermédiaire duquel les inserts de presse, en particulier lors de l'introduction d'une pièce à presser (4), sont actionnés dans le sens de fermeture avec une force qui est telle qu'une partie d'un corps humain parvenant accidentellement entre les inserts de presse (3, 5) ne peut pas être blessée ou seulement légèrement.
  4. Procédé selon la revendication 3, caractérisé en ce que les inserts de presse, lorsque le système d'entraînement n'est pas activé pour le processus de pressage, sont librement mobiles ou coulissants dans le sens ouvert ou dans le sens de fermeture
    a) moyennant l'utilisation du deuxième système d'entraînement et/ou du système d'entraînement supplémentaire et/ou
    b) manuellement.
  5. Procédé selon la revendication 1, caractérisé en ce que
    a) le deuxième système d'entraînement entre en contact ou en prise avec le coulisseau de la presse, en particulier au niveau de la broche, de la came ou dans l'évidement selon la revendication 1, de préférence est relié de manière articulée avec le coulisseau, et
    b) le deuxième système d'entraînement est en liaison active avec le capteur (27), de telle sorte que le système d'entraînement du processus de pressage est bloqué ou désactivé en cas de franchissement de la limite supérieure de la valeur prédéfinie.
  6. Procédé selon les revendications 1 et 5, caractérisé en ce qu'un organe (15) du type levier ou un élément entraîneur entre en contact ou en prise avec le coulisseau (9), ledit organe (15) étant monté pour se déplacer ou pivoter autour d'un axe (19) au moyen d'un système d'entraînement (21, 22) hydraulique ou pneumatique, pour pousser le coulisseau dans le sens ouvrant les inserts de presse, et en ce qu'un capteur (27), qui peut être connecté en cas de contact ou de prise, est agencé dans la zone de l'organe (15) ou de l'élément entraîneur et, en cas de contact ou de prise, est connecté par l'organe (15) ou l'élément entraîneur, de telle sorte que le système d'entraînement (31, 33) est bloqué ou désactivé en cas de franchissement de la limite supérieure de la valeur d'écartement (d) prédéfinie.
  7. Procédé selon la revendication 6, caractérisé en ce que le moyen d'entraînement supplémentaire entre en prise avec l'organe (15) du type levier ou l'élément entraîneur dans le sens fermant les inserts de presse, afin de pousser le coulisseau (9) dans le sens fermant les inserts de presse en cas de désactivation du deuxième système d'entraînement.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le système d'entraînement pour le processus de pressage et, le cas échéant, le deuxième système d'entraînement et/ou le système d'entraînement supplémentaire est ou sont actionné(s) par au moins une pédale.
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la valeur d'écartement prédéfinie est inférieure à 6 mm et en présence d'une valeur d'écartement de l'intervalle de sécurité supérieure ou égale à 6 mm, le processus de pressage peut être bloqué ou désactivé.
  10. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le système d'entraînement pour le processus de pressage et, le cas échéant, le deuxième système d'entraînement et/ou le système d'entraînement supplémentaire est ou sont actionné(s) par voie pneumatique, hydraulique, électrique ou manuellement.
EP05010731A 2005-05-18 2005-05-18 Procédé de protection pour outils de pressage Not-in-force EP1724101B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502005010975T DE502005010975D1 (de) 2005-05-18 2005-05-18 Schutzverfahren für Presswerkzeuge
ES05010731T ES2359067T3 (es) 2005-05-18 2005-05-18 Procedimiento de protección para útiles de prensa.
AT05010731T ATE498490T1 (de) 2005-05-18 2005-05-18 Schutzverfahren für presswerkzeuge
EP05010731A EP1724101B1 (fr) 2005-05-18 2005-05-18 Procédé de protection pour outils de pressage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05010731A EP1724101B1 (fr) 2005-05-18 2005-05-18 Procédé de protection pour outils de pressage

Publications (2)

Publication Number Publication Date
EP1724101A1 EP1724101A1 (fr) 2006-11-22
EP1724101B1 true EP1724101B1 (fr) 2011-02-16

Family

ID=35106851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05010731A Not-in-force EP1724101B1 (fr) 2005-05-18 2005-05-18 Procédé de protection pour outils de pressage

Country Status (4)

Country Link
EP (1) EP1724101B1 (fr)
AT (1) ATE498490T1 (fr)
DE (1) DE502005010975D1 (fr)
ES (1) ES2359067T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2995424B1 (fr) 2014-09-11 2018-12-12 Wezag GmbH Werkzeugfabrik Pince
DE202014011110U1 (de) 2014-09-11 2017-11-29 Wezag Gmbh Werkzeugfabrik Handzange
EP3208044A1 (fr) 2016-02-18 2017-08-23 Wezag GmbH Werkzeugfabrik Pince comprenant un systeme de levier a genouillere
EP3396796B1 (fr) 2017-04-25 2021-07-21 WEZAG GmbH & Co. KG Outil de compression, de sertissage ou de découpe et module d'outils
EP3820001B1 (fr) 2019-11-11 2022-08-17 WEZAG GmbH & Co. KG Pince à sertir et groupe de pinces à sertir
EP3834989B1 (fr) 2019-12-11 2022-11-23 WEZAG GmbH & Co. KG Outil pince à main et procédé de montage d'un tel outil
CN113161841B (zh) * 2021-04-25 2022-11-18 长春汽车工业高等专科学校 一种绝缘导线接线端子压合机
EP4243222B1 (fr) 2022-03-09 2024-05-15 WEZAG GmbH & Co. KG Capteur de puissance de pince à sertir et pince à sertir

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1577201A1 (de) * 1965-06-12 1970-04-09 Amp Inc Vorrichtung zum Verformen von Metall
EP0449664A2 (fr) * 1990-03-29 1991-10-02 Riggs Autopack Limited Presse

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400486A (en) 1943-11-22 1946-05-21 Cutler Hammer Inc Safety device for fluid power operated presses
CH500043A (de) 1968-12-13 1970-12-15 Braecker Ag Sicherheitseinrichtung für Werkzeugmaschinen
JPH0335519Y2 (fr) * 1985-07-17 1991-07-26
US4924693A (en) * 1988-12-16 1990-05-15 Amp Incorporated RAM actuating mechanism in a press for terminating wires
DE9401515U1 (de) * 1994-01-31 1994-03-24 DE-STA-CO Metallerzeugnisse GmbH, 61449 Steinbach Füge- oder Trennvorrichtung
DE19642204C2 (de) 1996-10-12 1999-07-22 Telegaertner Geraetebau Gmbh Sicherheitseinrichtung an Umformmaschinen
GB9819301D0 (en) * 1998-09-05 1998-10-28 Mckechnie Uk Ltd Improvements in presses

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1577201A1 (de) * 1965-06-12 1970-04-09 Amp Inc Vorrichtung zum Verformen von Metall
EP0449664A2 (fr) * 1990-03-29 1991-10-02 Riggs Autopack Limited Presse

Also Published As

Publication number Publication date
ES2359067T3 (es) 2011-05-18
ATE498490T1 (de) 2011-03-15
DE502005010975D1 (de) 2011-03-31
EP1724101A1 (fr) 2006-11-22

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