FR2572160A1 - SAFETY CONTROL DEVICE FOR MOST DANGEROUS MACHINE TOOLS AND MACHINES - Google Patents
SAFETY CONTROL DEVICE FOR MOST DANGEROUS MACHINE TOOLS AND MACHINES Download PDFInfo
- Publication number
- FR2572160A1 FR2572160A1 FR8415954A FR8415954A FR2572160A1 FR 2572160 A1 FR2572160 A1 FR 2572160A1 FR 8415954 A FR8415954 A FR 8415954A FR 8415954 A FR8415954 A FR 8415954A FR 2572160 A1 FR2572160 A1 FR 2572160A1
- Authority
- FR
- France
- Prior art keywords
- contact
- control
- safety
- button
- control device
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000004353 relayed correlation spectroscopy Methods 0.000 abstract 2
- 230000000994 depressogenic effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002266 amputation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
- F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
- F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
- F16P3/147—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using electro-magnetic technology, e.g. tags or radar
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
- F16P3/001—Safety devices for guarding the human operator of punch presses or like machine tools performing an opening and closing travel
- F16P3/003—Safety devices for guarding the human operator of punch presses or like machine tools performing an opening and closing travel by application of a specific control arrangement, e.g. specific switching systems or two-hand control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
- F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
- F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
- F16P3/144—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using light grids
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Push-Button Switches (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
DISPOSITIF DE COMMANDE DE SECURITE 10 D'UNE MACHINE-OUTIL COMPRENANT UN BOUTON 12 DE COMMANDE MANUELLE A ENFONCEMENT, MONTE SUR UNE PLATINE SUPPORT 14, AGISSANT SUR UN CONTACT ELECTRIQUE PAR UNE LIAISON MECANIQUE POSITIVE POUR LA FERMETURE DU CONTACT ET PAR UNE LIAISON MECANIQUE NON POSITIVE POUR L'OUVERTURE DU CONTACT, CARACTERISE EN CE QU'IL COMPORTE UN RELAIS DE COUPURE DE SECURITE DISPOSE ENTRE LA SOURCE ELECTRIQUE S ET L'ALIMENTATION DU CONTACT ET UN DETECTEUR PHOTOELECTRIQUE DISPOSE SUR LA PLATINE 14 DONT LE FAISCEAU EST A LA LIMITE D'INTERCEPTION DE LA PARTIE SUPERIEURE DU BOUTON DE COMMANDE 12 LORSQUE CE DERNIER EST EN POSITION HAUTE, LA FERMETURE DU RELAIS DE COUPURE DE SECURITE ETANT COMMANDEE PAR L'INTERCEPTEUR DU FAISCEAU 30 PAR UN OBSTACLE MATERIEL CONSTITUE PAR LA MAIN DE L'OPERATEUR.SAFETY CONTROL DEVICE 10 OF A MACHINE TOOL COMPRISING A BUTTON OF MANUAL PRESSURE CONTROL, MOUNTED ON A SUPPORT PLATE 14, ACTING ON AN ELECTRICAL CONTACT THROUGH A POSITIVE MECHANICAL CONNECTION FOR CLOSING THE CONTACT AND BY A NON-MECHANICAL CONNECTION POSITIVE FOR OPENING THE CONTACT, CHARACTERIZED IN THAT IT INCLUDES A SAFETY CUT-OFF RELAY BETWEEN THE ELECTRIC SOURCE S AND THE CONTACT SUPPLY AND A PHOTOELECTRIC DETECTOR PROVIDED ON PLATE 14 OF WHICH THE BEAM IS AT THE LIMIT D 'INTERCEPTION OF THE UPPER PART OF THE CONTROL BUTTON 12 WHEN THE LAST IS IN THE HIGH POSITION, THE CLOSING OF THE SAFETY CUT-OFF RELAY IS CONTROLLED BY THE BEAM INTERCEPTOR 30 BY A MATERIAL OBSTACLE CONSTITUTED BY THE OPERATOR'S HAND.
Description
DISPOSITIF DE CUPIHANDE DE SECURITE POUR LES MACHINES-OUTILS
ET LES MACHINES LES PLUS DANGEREUSES
La présente invention a pour objet un dispositif de commande de sécurité d'une machine-outil du type comportant un bouton de commande manuelle à enfoncement, monté sur une platine support, agissant sur un contact électrique par une liaison mécanique positive pour la fermeture du contact (ordre de marche) et par une liaison mécanique non positive pour l'ouverture du contact (ordre d'arrêt).SAFETY CUPIHANDE DEVICE FOR MACHINE TOOLS
AND THE MOST DANGEROUS MACHINES
The present invention relates to a safety control device for a machine tool of the type comprising a manual push-in control button, mounted on a support plate, acting on an electrical contact by a positive mechanical connection for closing the contact. (run order) and by a non-positive mechanical connection for opening the contact (stop order).
On appelle liaison mécanique positive entre deux organes mécaniques un agencement tel qu'en se déplaçant un organe mécanique en entraîne inévitablement un autre par contact direct ou par l'intermédiaire d'éléments rigides. Dans le cas contraire, lorsqu'un organe mécanique en se déplaçant en laisse un autre libre de se déplacer, par exemple sous l'effet d'un ressort de rappel, la liaison mécanique est alors non positive ou négative.An arrangement such as moving a mechanical member inevitably involves another by direct contact or by rigid elements is called a positive mechanical connection between two mechanical members. Otherwise, when a mechanical member while moving leaves another free to move, for example under the effect of a return spring, the mechanical connection is then non-positive or negative.
La commande des machines-outils dangereuses est très souvent assurée au moyen d'un dispositif comportant un bouton de commande manuelle à enfoncement manuel et à rappel élastique.The control of dangerous machine tools is very often ensured by means of a device comprising a manual control button with manual insertion and elastic return.
Les machines à hauts risques dites les plus dangereuses, telles que par exemple les presses, sont elles équipées d'un poste de commande bimanuelle comportant deux boutons de commande à enfoncement dont chacun doit être actionné par les mains de l'opérateur pour commander la descente du coulisseau de la presse.The so-called most dangerous high-risk machines, such as, for example, presses, are equipped with a two-hand control station comprising two push-in control buttons, each of which must be actuated by the operator's hands to control the descent. of the press slide.
Lorsque l'opérateur relâche l'un des boutons de commande, par exemple afin de repositionner correctement une pièce alors même que le coulisseau de la presse est en cours de descente, et du fait de la liaison mécanique non positive assurant l'ouverture du contact, il peut se trouver dans une situation très dangereuse pouvant aboutir à des accidents graves tels que des amputations des mains.When the operator releases one of the control buttons, for example in order to correctly reposition a part even when the press slide is being lowered, and due to the non-positive mechanical connection ensuring the opening of the contact , he may be in a very dangerous situation which could lead to serious accidents such as amputation of the hands.
La présente invention a pour but d'améliorer la sécurité apportée par ce type de dispositif de commande en compensant les faiblesses de la liaison non positive des boutons de commande constituées soit par des cas rares de blocage du bouton en position enfoncée, soit par le phénomène quasi systématique du retrait de la main de l'opérateur plus rapide que le rappel élastique du bouton en position haute.The present invention aims to improve the security provided by this type of control device by compensating for the weaknesses of the non-positive connection of the control buttons constituted either by rare cases of blocking of the button in the depressed position, or by the phenomenon almost systematic removal of the operator's hand faster than the elastic return of the button in the high position.
Dans ce but, l'invention propose un dispositif de commande de sécurité du type mentionné plus haut caractérisé en ce qu'il comporte un relais de coupure de sécurité disposé entre la source électrique et l'alimentation du contact et un détecteur photoélectrique disposé sur la platine dont le faisceau est à la limite d'interception de la partie supérieure du bouton de commande lorsque ce dernier est en position haute, la fermeture du relais de coupure de sécurité étant commandée par l'interception du faisceau par un obstacle matériel constitué par la mains de l'opérateur.To this end, the invention provides a safety control device of the type mentioned above, characterized in that it comprises a safety cut-off relay disposed between the electrical source and the contact supply and a photoelectric detector disposed on the plate whose beam is at the interception limit of the upper part of the control button when the latter is in the high position, the closing of the safety cut-off relay being controlled by the interception of the beam by a material obstacle constituted by the operator's hands.
Grâce à une telle conception on comprend que tout bouton se trouvant en position enfoncée et n'étant pas en contact avec l'élément matériel constitué par la main de l'opérateur provoque l'ouverture du relais de coupure de sécurité et donc l'arrêt de la machine.Thanks to such a design, it is understood that any button which is in the depressed position and which is not in contact with the material element constituted by the hand of the operator causes the opening of the safety cut-off relay and therefore the stopping. of the machine.
De plus, la disposition du relais entre la source électrique et l'alimentation du contact nécessite le retour du bouton en position haute et la présente à nouveau de la main de l'opérateur pour permettre un nouveau départ de cycle. In addition, the arrangement of the relay between the electrical source and the contact supply requires the return of the button to the high position and presents it again by the hand of the operator to allow a new start of the cycle.
On décrira maintenant l'invention en se référant aux~dessins annexés dans lesquels - la figure 1 est une demi-vue en coupe d'un poste de commande
bimanuelle dont les boutons de commandes sont réalisés
conformément aux enseignements de la présente invention, - la figure 2 est une vue en perspective du poste de commande
de la figure 1, - la figure 3 est une vue schématique d'un bouton de commande
à enfoncement à liaison positive à l'enfoncement et à
liaison non positive au relâchement.The invention will now be described with reference to the appended drawings in which - Figure 1 is a half-sectional view of a control station
bimanual whose command buttons are made
in accordance with the teachings of the present invention, - Figure 2 is a perspective view of the control station
of Figure 1, - Figure 3 is a schematic view of a control button
push-in positive link to push-in and
non-positive bond at release.
On a représenté aux figures 1 et 2 un poste de commande bimanuelle 10 comportant deux boutons de commande manuelle à enfoncement dont un bouton 12 est représenté et un bouton central d'arrêt d'urgence 16 tous montés sur une platine support-14. Aux deux figures, le bouton de commande est représenté en position enfoncée en traits pleins.FIGS. 1 and 2 show a two-hand control station 10 comprising two manual push-in control buttons, one button 12 of which is shown and a central emergency stop button 16 all mounted on a support plate-14. In the two figures, the control button is shown in the depressed position in solid lines.
Le bouton 12, schématisé à la figure 3, assure par une liaison mécanique positive la fermeture du contact électrique 18 lorsque l'opérateur appuie dessus et assure, par une liaison mécanique non positive, l'ouverture du contact électrique 18 sous l'effet du ressort de rappel 19
Conformément à l'invention, le dispositif de commande de sécurité de la machine 22 comprend un relais de coupure de sécurité comportant un contact à ouverture fermeture 20 disposé, comme on peut le constater à la figure 4, entre la source électrique 5 et l'alimentation du contact électrique 18. Le relais 20 est représenté à la figure 4 en position non appelée, le bouton 12 étant en position relevée ou haute.The button 12, shown diagrammatically in FIG. 3, ensures by a positive mechanical connection the closing of the electrical contact 18 when the operator presses it and ensures, by a non-positive mechanical connection, the opening of the electrical contact 18 under the effect of the return spring 19
According to the invention, the safety control device of the machine 22 comprises a safety cut-off relay comprising a closing opening contact 20 arranged, as can be seen in FIG. 4, between the electrical source 5 and the supply of the electrical contact 18. The relay 20 is shown in FIG. 4 in the non-called position, the button 12 being in the raised or high position.
Conformément à l'invention, la platine support 14 est équipée d'un détecteur photoélectrique à faisceau infrarouge 24.According to the invention, the support plate 14 is equipped with a photoelectric detector with an infrared beam 24.
Dans le mode réalisation représenté, le détecteur est un appareil de marque "BALLUFF électronique" série AG qui peut fonctionner en détecteur par réflexion directe. Le faisceau est transmis depuis le détecteur 24 par une fibre optique 28 jusqu a un dispositif émetteur 26 disposé sur la platine 14 de telle sorte que le faisceau émis 30 est à la limite d'interception de la partie supérieure du bouton de commande lorsque ce dernier est en position haute (voir figure 1) ; la main 32 de l'opérateur lorsque cette dernière est en contact avec la face supérieure du bouton (voir figure 2) intercepte le faisceau émis (30).In the embodiment shown, the detector is a device of the "electronic BALLUFF" brand AG series which can operate as a detector by direct reflection. The beam is transmitted from the detector 24 by an optical fiber 28 to a transmitting device 26 disposed on the plate 14 so that the emitted beam 30 is at the limit of interception of the upper part of the control button when the latter is in the high position (see Figure 1); the operator's hand 32 when the latter is in contact with the upper face of the button (see FIG. 2) intercepts the emitted beam (30).
Le type de détecteur utilisé comporte un élément sensible constitué par un phototransistor. Le temps de retombée très faible du relais de sortie de la cellule permet de diminuer le temps d'arrêt global de la machine équipée du dispositif, c'est-à-dire du temps global incluant le retour de l'équipage mécanique du bouton jusqu'à l'ouverture du circuit électriqué.The type of detector used comprises a sensitive element constituted by a phototransistor. The very short fallout time of the cell output relay makes it possible to reduce the overall downtime of the machine equipped with the device, that is to say the overall time including the return of the mechanical equipment from the button to 'at the opening of the electric circuit.
Le dispositif qui vient d'être décrit permet, tout en conservant les boutons de commande existants, d'équiper des postes de commande à peu de frais et de doter les machines ainsi équipées d'un très haut niveau de sécurité. The device which has just been described makes it possible, while retaining the existing control buttons, to equip control stations at low cost and to provide the machines thus equipped with a very high level of security.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8415954A FR2572160B3 (en) | 1984-10-18 | 1984-10-18 | SAFETY CONTROL DEVICE FOR MOST DANGEROUS MACHINE TOOLS AND MACHINES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8415954A FR2572160B3 (en) | 1984-10-18 | 1984-10-18 | SAFETY CONTROL DEVICE FOR MOST DANGEROUS MACHINE TOOLS AND MACHINES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2572160A1 true FR2572160A1 (en) | 1986-04-25 |
| FR2572160B3 FR2572160B3 (en) | 1987-02-13 |
Family
ID=9308766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8415954A Expired FR2572160B3 (en) | 1984-10-18 | 1984-10-18 | SAFETY CONTROL DEVICE FOR MOST DANGEROUS MACHINE TOOLS AND MACHINES |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2572160B3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2733783A1 (en) * | 1995-05-04 | 1996-11-08 | Kiekert Ag | SECURITY DEVICE ON A MOTOR VEHICLE, WHICH ALLOWS THE OPENING OF THE MOTOR VEHICLE ONLY BY A PERSON AUTHORIZED TO OPEN THE MOTOR VEHICLE |
| EP0972897A1 (en) * | 1998-07-17 | 2000-01-19 | Valeo Sécurité Habitacle | Safety system for a vehicle opening comprising a protective cover |
-
1984
- 1984-10-18 FR FR8415954A patent/FR2572160B3/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2733783A1 (en) * | 1995-05-04 | 1996-11-08 | Kiekert Ag | SECURITY DEVICE ON A MOTOR VEHICLE, WHICH ALLOWS THE OPENING OF THE MOTOR VEHICLE ONLY BY A PERSON AUTHORIZED TO OPEN THE MOTOR VEHICLE |
| EP0972897A1 (en) * | 1998-07-17 | 2000-01-19 | Valeo Sécurité Habitacle | Safety system for a vehicle opening comprising a protective cover |
| FR2781247A1 (en) * | 1998-07-17 | 2000-01-21 | Valeo Securite Habitacle | SECURITY SYSTEM FOR A MOTOR VEHICLE OPENING ELEMENT HAVING A PROTECTIVE COVER |
| US6239693B1 (en) | 1998-07-17 | 2001-05-29 | Valeo Securite Habitacle | Security system for a motor vehicle opening leaf comprising a protective cover |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2572160B3 (en) | 1987-02-13 |
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