EP1724101B1 - Safety method for pressing tools - Google Patents
Safety method for pressing tools Download PDFInfo
- 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
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- 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.)
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- 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
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- 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.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Gripping On Spindles (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Treatment Of Fiber Materials (AREA)
- Arc Welding In General (AREA)
- Ceramic Products (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Schutze einer Bedienungsperson bei Press- oder Klemmmaschinen (im folgenden "Pressmaschine") nach Anspruch 1.The present invention relates to a method for protecting an operator in press machines (hereinafter "press machine") according to claim 1.
Bei halbautomatischen und manuell betreibbaren Presswerkzeugmaschinen, pneumatischen Pressen, Klemmgeräten und dergleichen besteht eine grosse Verletzungsgefahr für das Bedienungspersonal insbesondere beim Einsetzen von zu verpressenden Materialien oder Werkstückteilen. Bei unsachgemässem Einsetzten oder unsachgemässer Bedienung sind insbesondere Hände, speziell Finger erheblich verletzungsgefährdet.In semi-automatic and manually operable press machine tools, pneumatic presses, clamping devices and the like, there is a high risk of injury to the operator, especially when inserting to be pressed materials or workpiece parts. In case of improper insertion or improper operation, especially hands, especially fingers, are in serious danger of injury.
Entsprechend bestehen Vorschriften zum Schutze von Bedienungspersonen bei Presswerkzeugen, was zum Anbringen von Schutzhauben, Sicherheitsabdeckungen und dergleichen geführt hat. Der Nachteil dieser Schutzeinrichtungen besteht darin, dass diese verschmutzt werden können, nach einer gewissen Gebrauchsdauer verkratzt sind, usw. und somit die Sicht zum Arbeitsbereich stark eingeschränkt ist. Auch wird die Arbeit durch derartige Abdeckungselemente erschwert.Accordingly, there are regulations for the protection of operators in pressing tools, which has led to the attachment of protective covers, safety covers and the like. The disadvantage of these guards is that they can be polluted, scratched after a certain period of use, etc. and thus the view to the work area is severely limited. Also, the work is complicated by such cover elements.
Weiterer Stand der Technik ist aus
Es ist daher eine Aufgabe der vorliegenden Erfindung, ein Verfahren zum Schutz von Bedienungspersonal beim Arbeiten mit Pressmaschinen vorzuschlagen, welche aber die Arbeitsweise in keiner Weise negativ beeinflussen beziehungsweise erschweren.It is therefore an object of the present invention to propose a method for protecting operating personnel when working with press machines, which, however, in no way negatively influence or complicate the operation.
Erfindungsgemäss wird die gestellte Aufgabe mittels eines Verfahrens gemäss dem Wortlaut nach Anspruch 1 gelöst.According to the invention, the object is achieved by means of a method according to the wording of claim 1.
Vorgeschlagen wird ein Verfahren zum Schutz einer Bedienungsperson bei Pressmaschinen, welches mindestens ein Detektionsmittel oder einen Sensor (im folgenden "Sensor") einsetzt für die Erfassung des Schliessspaltes oder Verpressschlitzes (im Folgenden "Verpressschlitz"), wobei der Sensor derart mit einem Antrieb für die Verpressung oder Klemmung (im Folgenden "Verpressung") wirkverbunden ist, dass bei einer Grösse des Verpressschlitzes gleich oder grösser als einem vorgegebenen Distanzwert der Antrieb nicht aktivierbar ist oder der Pressvorgang nicht durchführbar oder blockiert ist.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.
Erfindungsgemäß erfolgt der Antrieb über ein Langloch, welches einerseits für nicht aktivierten Antrieb einen Freiheitsgrad bildet. Hingegen erfolgt für aktivierten Antrieb zunächst eine Bewegung entlang des Langlochs mit anschließender Durchführung des eigentlichen Pressvorgangs, für den ein Stift die Antriebsbewegung und -kraft in einem Endbereich des Langlochs überträgt.According to the invention, the drive via a slot, which forms a degree of freedom on the one hand for non-activated drive. On the other hand, for activated drive, first 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.
An demjenigen Teil der Pressmaschine, welches für den Pressvorgang bewegbar oder antreibbar ist, oder an einem Element, welches mit diesem Teil verbunden ist, (hier auch "Stößel" genannt) ist eine Markierung, ein Stift, ein Nocken, eine Ausnehmung oder dergleichen angeordnet , mittels welchem oder welcher beziehungsweise mittels dessen oder deren Position die Grösse des Verpressschlitzes ermittelbar ist und welches oder welcher mit dem Sensor wirkverbunden ist, um bei Überschreiten des vorgegebenen Wertes den Antrieb des Presswerkzeuges zu blockieren oder zu deaktivieren.At that part of the pressing machine, which is movable or driven for the pressing operation, or on an element which is connected to this part, (here also called "plunger") 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.
Weiter vorgeschlagen wird, dass ein zweiter Antrieb vorgesehen ist zum Öffnen der Pressmaschine insbesondere nach durchgeführter Verpressung.It is further proposed that a second drive is provided for opening the pressing machine, in particular after performing pressing.
Weiter wird vorgeschlagen, dass ein weiteres Antriebsmittel wie beispielsweise ein Spannorgan oder eine Spannfeder vorgesehen ist, um einen Presseinsatz, insbesondere beim Einlegen eines zu pressenden oder zu klemmenden Werkstückes in Schliessrichtung mit einer Kraft zu treiben, welche derart ist, dass keine Verletzungen von menschlichen Körperteilen verursacht werden kann.It is further proposed that 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.
Wiederum gemäss einer weiteren Ausführungsvariante greift der zweite Antrieb am oben genannten Teil der Pressmaschine wie vorzugsweise am Stift, Nocken oder in der Ausnehmung an oder ein und ist mit dem genannten Teil insbesondere gelenkartig verbunden, wobei der zweite Antrieb derart mit dem Sensor wirkverbunden ist, dass beim Öffnen des der Presseinsätze mittels des zweiten Antriebes der Antrieb der Pressmaschine nach Überschreiten des vorgegebenen Distanzwertes des Verpressschlitzes blockiert oder deaktiviert ist.Again, according to a further embodiment, 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.
Das gesamte Teil ist gemäss einer Ausführungsvariante bei deaktiviertem oder blockiertem Antrieb für den Pressvorgang in geöffnete Position und/oder in Schliessrichtung, gegebenenfalls mittels des zweiten und/oder des weiteren Antriebes, und/oder manuell frei beweglich oder verschiebbar gelagert.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.
Weitere bevorzugte Ausführungsvarianten der Anordnung sind in den abhängigen Ansprüchen charakterisiert.Further preferred embodiments of the arrangement are characterized in the dependent claims.
Die erfindungsgemäss definierte Anordnung eignet sich insbesondere zum Schutze einer Bedienungsperson einer pneumatischen, hydraulischen oder elektrischen Crimppresse insbesondere bei Einsatz zum Anschliessen von Kabeln an einen Kabelschuh, an ein Tube-Terminal, einen Kabeladapter und dergleichen.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.
Selbstverständlich eignen sich die erfindungsgemäss vorgeschlagenen Anordnungen generell für alle Arten von Press- und Klemmwerkzeugen.Of course, the proposed arrangements according to the invention are generally suitable for all types of pressing and clamping tools.
Die Erfindung wird nun beispielsweise und unter Bezug auf die beigefügten Figuren näher erläutert. Dabei zeigen:
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Fig. 1 schematisch im Schnitt die wichtigsten Elemente einer Pressmaschine in geschlossenem Zustand, -
Fig. 2 im Schnitt der Pressmaschine ausFig. 1 in geöffnetem Zustand, -
Fig. 3 die Pressmaschine ausFig. 1 mit reduziert geöffneten Presseinsätzen in Position geeignet für das Einlegen eines zu pressenden Werkstückes und -
Fig. 4 die Pressmaschine ausFig. 1 während des Pressvorganges.
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Fig. 1 schematically in section the most important elements of a pressing machine in the closed state, -
Fig. 2 in the section of the pressing machineFig. 1 in open condition, -
Fig. 3 the pressing machine offFig. 1 with reduced open dies in position suitable for inserting a workpiece to be pressed and -
Fig. 4 the pressing machine offFig. 1 during the pressing process.
Zurückkommend auf den zylinderartigen Stössel 9 weist dieser am oberen Ende eine Langloch 29 auf, in welchem ein Druckhebel 37 über einen Stift 39 eingreift, auf dessen Funktionsweise wiederum später eingegangen wird. Der Press- bzw. Druckhebel 37 seinerseits ist über einen Umlenkhebel 35 mit dem Kolben 33 verbunden, welcher im Druckzylinder 31 angeordnet ist. Druckzylinder 31 und Druckkolben 33 werden über eine hydraulische, pneumatische oder elektrische Speisung 34 für das Auslösen beziehungsweise Durchführen des eigentlichen Press- oder Klemmvorganges angetrieben. Auf die detaillierte Darstellung der Speisung 24 und 34 sowohl des Antriebes 21 wie auch des Druckkolbens 33 wird aus Übersichtsgründen verzichtet, doch kann es sich dabei um Druckluft, eine pneumatische Flüssigkeit, einen elektromechanischen Antrieb, etc. handeln.Coming back to the cylinder-
Anhand der
Um nun ein zu verpressendes Werkstück in den Einsatz einzulegen wie beispielsweise für das Pressen oder Crimpen eines Kabels mit einem Anschlussschuh muss zunächst das Crimp- oder Presswerkzeug geöffnet werden, was beispielsweise durch Anheben des oberen Crimp- oder Presseinsatzes 3 erfolgt. Das Anheben dieses Einsatzes erfolgt mittels des hebelartigen Mitnehmers 15, welcher mittels des im Druckzylinder 22 beispielsweise durch Einbringen von Druckluft nach oben gedrückten Kolbens 21 geschieht. Durch das Anheben des hebelartigen Mitnehmers wird auch der Nocken 13 und damit der Stössel 9 nach oben getrieben. Durch das nach oben Bewegen des hebelartigen Mitnehmers 15 wird der Sensor oder Schalter 27 freigegeben beziehungsweise besteht keine Berührung mit diesem Sensor und gleichzeitig wird mittels des elektrischen, hydraulischen oder pneumatischen Schaltkreises 25 ein Signal generiert um den Antrieb des Presskolbens 33 im Druck- bzw. Presszylinder 31 zu deaktivieren oder zu blockieren. Als Konsequenz kann keine Speisung des Press- bzw. Druckzylinders 31 über die Zufuhrleitung 34 erfolgen d.h. diese ist blockiert. Mit anderen Worten ist im Zustand, wie dargestellt in
Für das Einlegen des oder der zu verpressenden Werkstücke müssen selbstverständlich die beiden Crimpeinsätze 3 und 5 näher zueinander bewegt werden, was in
Nun kann die Bedienungsperson beispielsweise mittels einem Fusspedal den eigentlichen Press- oder Klemmvorgang auslösen, indem die Zufuhr beispielsweise von Pressluft eines hydraulischen Druckmediums oder elektrisch aktivierbar ist, womit die Pressung ausgeführt wird, wie schematisch in
Da die Speisung 24 des Hubzylinders 22 deaktiviert ist, dreht der hebelartige Mitnehmer 15 frei um die Achse 19 und wird so ebenfalls nach unten gezogen.Since the
Zusammenfassend lässt sich die Arbeitweise des erfindungsgemäss vorgeschlagenen Press- oder Klemmwerkzeuges wie folgt charakterisieren:
- 1. Das eigentliche Werkzeug beziehungsweise die
Crimpeinsätze 3 und 5 werden mittels einem separaten Antrieb geöffnet, wobei gleichzeitig der Antrieb für die Verpressung oder Klemmung deaktiviert ist. Mindestens einer der Einsätze ist in Öffnungsrichtung und/oder Schliessrichtung frei verschiebbar gelagert. Dieser separate Antrieb, wie der in denFiguren als Hubzylinder 22 und Hubkolben 21 bezeichnete Antrieb kann pneumatisch oder hydraulisch betrieben werden oder selbstverständlich auch elektromechanisch. - 2. Um nun ein oder mehrere Werkstücke für das Verpressen zwischen die
Crimpeinsätze 3 und 5 einzulegen, werden diese Einsätze mittels eines weiteren Antriebes, wie beispielsweise der Spannfeder 23, gegen einander bewegt, wobei die durch den zweiten Antrieb wie die Spannfeder erzeugte Kraft derart gering ist, dass selbst bei Unachtsamkeit, wie beispielsweise das Bewegen der Hand zwischen die beiden Crimpeinsätze, keine Verletzungsgefahr besteht. - 3. Nach Einlegen des oder der zu verpressenden oder zu klemmenden Werkstücke 4 werden die
Crimpeinsätze 3 und 5 weiter gegeneinander bewegt, bis eine Sicherheitsdistanz d, wie beispielsweise 6 mm gemäss CE-Norm, erreicht oder unterschritten wird. Dieses Unterschreiten der Sicherheitsdistanz d wird mittels eines Sensor oder mittels Detektionsmittelswie den Schalter 27 erfasst, welcher beispielsweise über einen elektrischen, hydraulischen oder pneumatischen Schaltkreis die Blockierung des eigentlichen Press- oder Klemmantriebes aufhebt, womit nun die eigentliche Verpressung stattfinden kann. - 5. Die Bedienungsperson kann nun die Verpressung beziehungsweise Klemmung des oder der Werkstücke 4 auslösen, wobei die Distanz zwischen den beiden
Crimpeinsätzen 3 und 5 derart ist, dass selbst ein Finger der Bedienungsperson nicht mehr zwischen die Einsätze geraten kann.
- 1. The actual tool or the crimping dies 3 and 5 are opened by means of a separate drive, wherein at the same time the drive for the pressing or clamping is deactivated. At least one of the inserts is freely displaceable in the opening direction and / or closing direction. This separate drive, such as the drive designated as lifting
cylinder 22 andlifting piston 21 in the figures, can be operated pneumatically or hydraulically or of course also electromechanically. - 2. In order to insert one or more workpieces for the compression between the crimping dies 3 and 5, these inserts are moved by means of another drive, such as the
tension spring 23 against each other, wherein the force generated by the second drive as the tension spring so small is that even in carelessness, such as moving the hand between the two crimping inserts, there is no risk of injury. - 3. After inserting the workpiece or workpieces 4 to be pressed or clamped, the crimping
3 and 5 are further moved against each other until a safety distance d, such as 6 mm according to CE standard, is reached or fallen below. This falling below the safety distance d is detected by means of a sensor or by means of detection such as theinserts switch 27, which, for example, via an electrical, hydraulic or pneumatic circuit cancels the blocking of the actual pressing or clamping drive, which now the actual compression can take place. - 5. The operator can now trigger the compression or clamping of the workpieces 4, wherein the distance between the two crimping dies 3 and 5 is such that even a finger of the operator can no longer fall between the inserts.
Bei den in den Figuren dargestellten Klemm- beziehungsweise Presswerkzeugen oder -maschinen und den damit verbundenen Sicherheitselementen handelt es sich selbstverständlich nur um Beispiele, welche dazu dienen, die vorliegende Erfindung näher zu erläutern.The clamping or pressing tools or machines shown in the figures and the associated security elements are of course only examples, which serve to explain the present invention in more detail.
Selbstverständlich können unterschiedliche Massnahmen ergriffen werden, um die Sicherheitsdistanz d zu erfassen und auch die Übertragung von Signalen an den eigentlichen Press- oder Klemmantrieb kann unterschiedlich gewählt werden. Wesentlich ist, dass an irgend einer Stelle mittels geeigneten Massnahmen die Sicherheitsdistanz d erfasst wird, sodass bei Überschreiten dieser Distanz in gar keinem Falle der Press- oder Klemmantrieb aktiviert werden kann. Es ist also durchaus auch möglich, mittels Lichtschranken, mittels elektrischen Schaltimpulsen, mittels mechanischen Schaltorganen, etc. diesen Sicherheitsdistanzwert zu erfassen.Of course, different measures can be taken to detect the safety distance d and also the transmission of signals to the actual pressing or clamping drive can be chosen differently. It is essential that at some point by means of suitable measures the safety distance d is detected, so that when this distance is exceeded in any case the pressing or clamping drive can be activated. So it is quite possible, by means of photoelectric sensors, by means of electrical switching pulses, by means of mechanical Schaltorganen, etc. to detect this safety distance value.
Auch der Antrieb selbst kann selbstverständlich unterschiedlich gewählt werden und der unter Bezug auf die
Auch der zweite sowie der weitere Antrieb können unterschiedlich gewählt werden, wie beispielsweise indem der zweite Antrieb eine Spannfeder aufweist und der weitere Antrieb pneumatisch, hydraulisch oder elektromechanisch betrieben wird. Ja es ist sogar möglich, sowohl den zweiten wie auch den weiteren Antrieb manuell zu betätigen, da infolge des Freilaufes des Zylinderstössels 9 bei deaktiviertem bzw. blockiertem Antrieb für den Press- oder Klemmvorgang dieses sowohl in Öffnungsrichtung wie auch in Schliessrichtung leicht bewegbar ist.Also, 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
Schliesslich sei ergänzend noch erwähnt, dass die erfindungsgemäss vorgeschlagene Sicherheitsanordnung für irgendwelche Press- oder Klemmwerkzeuge oder -maschinen verwendet werden kann und das unter Bezug auf die
Claims (10)
- Method for protecting a user of a crimping machine comprising a sensor (27) for sensing a crimping slot, the sensor (27) being operatively linked with a drive (31, 33) for the crimping process such that for a size of the crimping slot equalling or being larger than a predetermined distance value (d) the drive (31, 33) not being activatable or the crimping process being blocked or not being feasible, whereina) for not activated or blocked drive (31, 33) a stem (9) holding an upper crimping insert (3) is linked for free movement both in an opening direction as well as in a closing direction,
characterized byb) an elongated hole which extends in opening and closing direction being formed in the stem (9) and a pin (39) engaging the elongated hole (29), wherein the pin (39) is connected with the drive (31, 33) for the crimping process and wherein for not activated drive the pin (39) during the opening or closing movement of at least one of the crimping inserts is freely movable in the elongated hole with respect to and along the elongated hole, whereinc) for the free moveability a closing movement is possible up to a distance smaller than a safety distance,d) the sensor senses the distance being smaller than the safety distance wherein the sensor then removes the deactivation of the drive or the blocking or unfeasibility of the crimping process providing that the crimping process might take place, ande) for activated drive (31, 33) the drive presses the stem (9) in the elongated hole (29) sliding in downward direction and subsequently the two crimping inserts (3, 5) are pressed against each other by the drive (31, 33),f) the stem (9) of the crimping machine which is movable or driven during the crimping or clamping process or an element linked with the stem comprises a marker, a pin, a cam (13) or a recess, wherein the marker, pin, cam (13) or recess or the position of the same is suitable for determining the size of the crimping slot and wherein the marker, pin, cam (13) or recess is linked with the sensor (27) for blocking or deactivating the drive (31, 33) of the crimping machine in case of the distance exceeding the predetermined value (d). - Method of claim 1, characterized by an opening movement of the crimping inserts (3, 5) being provided by use of a second drive (21, 22).
- Method of claim 1 or 2, characterized by another drive means (23) being provided for driving the crimping inserts, in particular during the introduction of a work piece (4) to be crimped, in closing direction with a force dimensioned such that a part of a human body by mistake or unawareness located between the crimping inserts (3, 5) is not injured or only slightly injured.
- Method of claim 3, characterized by the crimping inserts for not activated drive used for the crimping process is freely movable or displaceable in opening or closing directiona) by use of a second and/or the additional drive and/orb) manually.
- Method of claim 1, characterized bya) the second drive cooperating or engaging the stem of the crimping machine, in particular the pin, cam or the recess of claim 1, preferably the second drive being linked with the stem by a kind of joint, andb) the second drive being operatively linked with the sensor (27) such that the drive of the crimping process is blocked or deactivated when exceeding the predetermined value.
- Method of one of claims 1 and 5, characterized by a lever type means (15) or a driving element cooperating or engaging the stem (9), wherein the means (15) pivotably linked with a pivoting degree of freedom around an axis (19) is movable or pivotable by means of a hydraulic or pneumatic drive (21, 22) in order to drive the stem into an opening direction for the crimping inserts, and a sensor being provided which in the region of the means (15) or the driving element is switchable upon contact or engagement, wherein the sensor (27) is linked with the drive of the crimping machine and wherein the sensor upon contact, cooperation or engagement by the means (15) or the driving element is switched such that upon exceeding the predetermined distance value (d) the drive (31, 33) is blocked or deactivated.
- Method of claim 6, characterized by the additional drive means cooperating with or engaging a lever type means (15) or a driving element in a closing direction of the crimping inserts for driving the stem (9) with a deactivation of the second drive into a direction closing the crimping inserts.
- Method of one of claims 1 to 7, wherein the drive for the crimping process as well as the second and/or additional drive if present are actuatable via at least one foot pedal.
- Method of one of claims 1 to 8, wherein the predetermined distance value is smaller than 6 mm such that the crimping process is blocked or deactivated for a distance value of the crimping slot larger than or equal to 6 mm.
- Method of one of claims 1 to 9, wherein the drive for the crimping process as well as the second and/or the additional drive if present is pneumatically, hydraulically or electrically or manually driven.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES05010731T ES2359067T3 (en) | 2005-05-18 | 2005-05-18 | PROTECTION PROCEDURE FOR PRESS TOOLS. |
DE502005010975T DE502005010975D1 (en) | 2005-05-18 | 2005-05-18 | Protection method for pressing tools |
EP05010731A EP1724101B1 (en) | 2005-05-18 | 2005-05-18 | Safety method for pressing tools |
AT05010731T ATE498490T1 (en) | 2005-05-18 | 2005-05-18 | PROTECTION PROCEDURES FOR PRESSING TOOLS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05010731A EP1724101B1 (en) | 2005-05-18 | 2005-05-18 | Safety method for pressing tools |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1724101A1 EP1724101A1 (en) | 2006-11-22 |
EP1724101B1 true EP1724101B1 (en) | 2011-02-16 |
Family
ID=35106851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05010731A Not-in-force EP1724101B1 (en) | 2005-05-18 | 2005-05-18 | Safety method for pressing tools |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1724101B1 (en) |
AT (1) | ATE498490T1 (en) |
DE (1) | DE502005010975D1 (en) |
ES (1) | ES2359067T3 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2995424B1 (en) | 2014-09-11 | 2018-12-12 | Wezag GmbH Werkzeugfabrik | Pliers |
DE202014011110U1 (en) | 2014-09-11 | 2017-11-29 | Wezag Gmbh Werkzeugfabrik | hand tool |
EP3208044A1 (en) | 2016-02-18 | 2017-08-23 | Wezag GmbH Werkzeugfabrik | Pliers with a knee lever gearbox |
EP3396796B1 (en) | 2017-04-25 | 2021-07-21 | WEZAG GmbH & Co. KG | Press, crimping or cutting tool and tool group |
EP3820001B1 (en) | 2019-11-11 | 2022-08-17 | WEZAG GmbH & Co. KG | Crimping pliers and group of crimping pliers |
EP3834989B1 (en) | 2019-12-11 | 2022-11-23 | WEZAG GmbH & Co. KG | Hand-held clamping tool and method for assembling the same |
CN113161841B (en) * | 2021-04-25 | 2022-11-18 | 长春汽车工业高等专科学校 | Insulated conductor binding post pressfitting machine |
EP4243222B1 (en) | 2022-03-09 | 2024-05-15 | WEZAG GmbH & Co. KG | Crimping tool force sensor and crimping tool |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1577201A1 (en) * | 1965-06-12 | 1970-04-09 | Amp Inc | Device for deforming metal |
EP0449664A2 (en) * | 1990-03-29 | 1991-10-02 | Riggs Autopack Limited | Press |
Family Cites Families (7)
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 (en) | 1968-12-13 | 1970-12-15 | Braecker Ag | Safety device for machine tools |
JPH0335519Y2 (en) * | 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 (en) * | 1994-01-31 | 1994-03-24 | DE-STA-CO Metallerzeugnisse GmbH, 61449 Steinbach | Joining or separating device |
DE19642204C2 (en) | 1996-10-12 | 1999-07-22 | Telegaertner Geraetebau Gmbh | Safety device on metal forming machines |
GB9819301D0 (en) * | 1998-09-05 | 1998-10-28 | Mckechnie Uk Ltd | Improvements in presses |
-
2005
- 2005-05-18 EP EP05010731A patent/EP1724101B1/en not_active Not-in-force
- 2005-05-18 AT AT05010731T patent/ATE498490T1/en active
- 2005-05-18 ES ES05010731T patent/ES2359067T3/en active Active
- 2005-05-18 DE DE502005010975T patent/DE502005010975D1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1577201A1 (en) * | 1965-06-12 | 1970-04-09 | Amp Inc | Device for deforming metal |
EP0449664A2 (en) * | 1990-03-29 | 1991-10-02 | Riggs Autopack Limited | Press |
Also Published As
Publication number | Publication date |
---|---|
ATE498490T1 (en) | 2011-03-15 |
EP1724101A1 (en) | 2006-11-22 |
DE502005010975D1 (en) | 2011-03-31 |
ES2359067T3 (en) | 2011-05-18 |
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