EP3575035B1 - Outil pneumatique - Google Patents

Outil pneumatique Download PDF

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Publication number
EP3575035B1
EP3575035B1 EP18174681.9A EP18174681A EP3575035B1 EP 3575035 B1 EP3575035 B1 EP 3575035B1 EP 18174681 A EP18174681 A EP 18174681A EP 3575035 B1 EP3575035 B1 EP 3575035B1
Authority
EP
European Patent Office
Prior art keywords
housing
component
contact
work apparatus
switching element
Prior art date
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Active
Application number
EP18174681.9A
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German (de)
English (en)
Other versions
EP3575035A1 (fr
Inventor
Stefano Carbone
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.)
Univer SpA
Original Assignee
Univer SpA
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Publication date
Application filed by Univer SpA filed Critical Univer SpA
Priority to EP18174681.9A priority Critical patent/EP3575035B1/fr
Publication of EP3575035A1 publication Critical patent/EP3575035A1/fr
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Publication of EP3575035B1 publication Critical patent/EP3575035B1/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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B25B5/064—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis perpendicular to the pressing direction
    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/12—Arrangements for positively actuating jaws using toggle links
    • B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive
    • 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
    • B25B5/00—Clamps
    • B25B5/16—Details, e.g. jaws, jaw attachments

Definitions

  • the invention relates to a pneumatically operable working device, in particular for use in body construction in the motor vehicle industry, with an in particular double-acting cylinder which has a cylinder housing, a piston that can be moved in this housing and a piston rod that is connected to this, can be moved linearly and is guided out of the cylinder housing for actuation an arm, in particular a clamping arm or swivel arm, of the working device, with the area of the piston rod which is arranged outside the cylinder housing being arranged inside a head housing of the working device and the piston rod accommodating at least one switching element inside the head housing, and with a device connected to the head housing for detecting and Queries at least one position of the switching element, the head housing having two housing parts connected to one another and the device being arranged in a separating region of the two housing parts.
  • Such working devices in which the piston rod acts on the arm, in particular the clamping arm or swivel arm, of the working device via a toggle lever, are usually referred to as a toggle lever clamping device or toggle lever pivoting device.
  • the clamping arm In the case of a working device with a clamping arm, this usually has the task of clamping a workpiece or an object. In one end position of the displaceable piston, the clamping arm assumes its clamping position, while in the other end position of the piston, the clamping arm is in the open position.
  • the length of the piston rod can be adjustable, so that different opening angles of the clamping arm can be achieved by means of the working device.
  • the device for detecting and querying is used to query the same position of the switching element in the clamping position of the clamping arm and a variable position of this switching element or another switching element depending on the selected length of the piston rod.
  • a working device of the type mentioned is from EP 2 548 700 A1 famous.
  • the device for detecting and querying at least one position of the switching element is designed in two parts.
  • the device has a mechanical component which is arranged within the head housing and can be displaced under the action of the switching element on the piston rod side. Depending on the displacement position of the component, it interacts with optical sensors of a further part of the detection and querying device which is arranged outside of the head housing and is screwed to it.
  • this tool has been sold extensively by the applicant and has a number of electrical displays and an electrical connection for an electrical device for the purpose of querying the at least one position of the switching element.
  • at least one or both end positions of the piston rod can be detected and displayed directly on the working device and/or the external device.
  • the object of the present invention is to develop a working device that has the features of the preamble of claim 1 in such a way that in the area of the device for detecting and querying there is a significant simplification with regard to construction and assembly and, moreover, an effective one with regard to different series standardization is possible.
  • the working device provides that the device for detecting and querying has a first component for detecting the at least one position of the switching element and a second separate component for querying the at least one position of the switching element, with the first component being mounted in the two housing parts between them and the first component has detection means for detecting the at least one position of the switching element on a side facing the interior of the head housing and the first component has first electrical contact means which interact with the detection means on a side facing the exterior of the head housing, wherein the second component is arranged in the area of the side facing the exterior of the head housing and is connected to the head housing, and the second component has second electrical contact means, which contact the first contact means, and is connected to the second contact means together has amine-acting output means, wherein the output means output the detected by means of the detecting means at least one position of the switching element.
  • this working device there is therefore a functional separation of the device for detecting and querying at least one position of the switching element into the two components, namely the first component and the second component.
  • the first component is used to detect at least one position of the switching element
  • the second component is used to query at least one position of the switching element.
  • the two components interact exclusively via the contact means assigned to them, thus the first electrical contact means and the second electrical contact means. Because of this functional separation of the device for detecting and querying at least one position of the switching element, a single second component can be used for the entire production range of different pneumatically operated working devices. This enables one significant reduction in inventory and the reduction of spare parts to be kept available. Regarding this second component, only the same spare part has to be kept in stock.
  • the second component Since the second component is positioned in the area of the outside of the head housing, it can be easily attached to the head housing or dismantled with respect to the head housing.
  • the storage of the first component is particularly simple and safe because it is stored in the two housing parts between them.
  • a particularly simple construction is given in this respect if the first component is inserted, in particular plugged, into one housing part and then the two housing parts are joined together, the first component being inserted, in particular plugged in, into the other housing part. If the two housing parts are firmly connected to one another, in particular screwed together, no further fastening means are required for the first component in order to store it in the two housing parts.
  • the two components of the device for detecting and querying at least one position of the switching element are electrically contacted when the second component is connected to the head housing with the first component already mounted in the head housing. It is only necessary to place the second component in its mounting position with respect to the head housing. In this case, their second electrical contact means come into direct contact with the first electrical contact means of the first component. With this design, therefore, no special measures need to be taken to connect the two contact means.
  • one contact means has a resilient contact spring and the other contact means has a contact plate, with the contact spring making contact with the contact plate.
  • the contact plate can thus be rigid be while the contact spring is compliant. Due to the resilience of the contact spring, a system of the contact means under pretension and thus a permanently reliable contact is guaranteed.
  • the flexible contact spring is assigned in particular to the second component.
  • the contact spring thus represents the second electrical contact means.
  • the detection means of the first component are preferably designed as optical sensors.
  • the detection means are assigned in particular to the first contact means in that area of this contact means in which the switching element connected to the piston rod is in an open position of the arm, in particular the clamping arm or swivel arm. Further detection means can certainly be provided which detect other positions of the arm, for example a position of the arm which corresponds to its other end position, in particular a closed position of the tensioning arm.
  • the second component has in particular a housing.
  • This housing is in particular connected to both housing parts of the head housing, in particular screwed to it.
  • the housing of the second component preferably has the second contact means on a side facing the head housing and the output means are arranged on one or more other sides.
  • the output means have an electrical connection for an external device.
  • the output means have one or more electrical displays.
  • the electrical displays are in particular lamps, with one lamp in particular lighting up when the switching element is in a position between a pair of sensors which is arranged at a point which corresponds to the position of the switching element in the open end position of the arm, in particular the clamping arm , is equivalent to. If the clamping arm is in a different position, i.e. the switching element is in a different position, this pair of sensors does not determine the presence of the switching element and the other lamp then lights up, which indicates that the arm is not in the open position or that the switching element is not is not in the position corresponding to this open position.
  • Another light can indicate, for example, whether the electrical device for detecting and querying at least one position of the switching element is energized or de-energized.
  • the electrical connection which is also provided for an external device, makes it possible for this information not to be queried directly from the second component, but instead to be fed to an external electrical device via a line connected to the electrical connection for the purpose of querying.
  • the first component is designed in particular in such a way that it has a strip-shaped base body.
  • a switch can be stored particularly easily in the two halves of the housing between them and is also functionally optimally designed from the point of view of the linear travel of the switching element.
  • the base body is preferably designed in such a way that it accommodates the detection means on one side and the first contact means on a side facing away from this side. This design is functionally particularly advantageous because the detection means are directly associated with the movement path of the switching element and the first contact means, which are particularly easily accessible from the outside of the head housing, are directly associated with the second contact means.
  • the base body has projections or recesses on opposite sides, which engage in complementarily designed recesses or projections on the housing parts. Because of this design, a particularly simple arrangement and connection of the body and thus the first component are created in the head housing by a form-fitting arrangement between the base body and the housing parts is accomplished.
  • the base body has projections, in particular truncated cone-shaped projections, on opposite sides, which are inserted in recesses, in particular truncated cone-shaped recesses of the housing parts, in particular are inserted without play when the housing parts are connected to one another.
  • the base body is inserted into one housing part of the head housing and then the other housing part is pushed onto the base body, the two housing parts then lying against one another and it is only necessary to screw the two housing parts together.
  • the head housing has a passage in the area where the two housing parts are separated, with the first contact means being arranged in the area of the passage. Consequently, a particularly simple contacting of the first contact means with the second contact means is possible when the second component is placed on the first component and connected to it.
  • a pneumatically operated working device 1 is used in particular for use in body construction in the motor vehicle industry.
  • the working device 1 has a double-acting cylinder 2 .
  • This has a cylinder housing 3 , a piston (not shown) that can be moved in this housing and a piston rod 4 that is connected to the piston, can be moved linearly and is guided out of the cylinder housing 3 for actuating an arm of the working device 1 that is not shown.
  • the area of the piston rod 4 which is arranged outside of the cylinder housing 3 is arranged inside a head housing 5 of the working device 1 .
  • the piston rod 4 In the region of its end facing away from the piston, the piston rod 4 is connected in an articulated manner to a toggle lever 6, the other end of which is connected to an output shaft 7 in a rotationally fixed manner.
  • the arm in this case the clamping arm or swivel arm, is mounted in the output shaft 7 in a rotationally fixed and axially fixed manner.
  • the two housing parts 8, 9 have flat receptacles 10 in areas facing one another, in the area of which the working device 1 is mounted, in particular on a robot arm. Threaded holes 11 arranged in the area of the receptacles 10 serve to screw the working device 1 to the robot arm.
  • the piston rod 4 accommodates a switching element 12 within the head housing 5 . This is moved linearly according to the retracting and extending movement of the piston rod 4 .
  • the switching element 12 is designed as a lug that extends perpendicularly to the longitudinal axis of the piston rod 4 and is oriented from the piston rod 4 in the direction of the receptacles 4 .
  • the implement 1 has a device 13 connected to the head housing 5 for detecting and querying at least one position of the switching element 12, specifically for detecting two end positions of the switching element 12.
  • This device 13 is arranged in a separating area of the two housing parts 8, 9, ie where the head housing 5 is divided.
  • the device 13 has a first component 14 for detecting the two end positions of the switching element 12 and a second, separate component 15 for querying these two positions of the switching element 12 .
  • the first component 14 is mounted in the two housing parts 8, 9 between them.
  • the first component 14 has detection means 16 on a side facing the interior of the head housing 4 for detecting the two positions of the switching element 12 mentioned.
  • the first component 14 also has first electrical contact means 17 which interact with the detection means 16 on a side facing the outside of the head housing 5 .
  • the second component 15 is arranged in the area of the side facing the outside of the head housing 5 and with the head housing 5, concretely with the two housing parts 8 and 9 connected.
  • the second component 15 has second electrical contact means 18 which make contact with the first contact means 17 and output means 19 which interact with the second contact means 18 .
  • the output means 19 output the positions of the switching element 12 detected by the detection means 16 .
  • the first component 14 has a base body 20 in the form of a strip. This accommodates the detection means 16 on one side and the first contact means 17 on the side facing away from this side.
  • the base body 20 has projections 21 on opposite sides, with two projections 21 being aligned with one another.
  • the projections 21 engage in complementarily designed recesses 22 of the housing parts 8 and 9 .
  • two projections 21 arranged on one side of the base body 20 engage in two recesses 22 of one housing part 8 and two projections 21 arranged on the other side of the base body 20 engage in two recesses 22 of the other housing part 9 .
  • the projections 21 and recesses 22 are formed in the shape of a truncated cone.
  • the base body 20 with its two projections 21 arranged on one side is inserted into the two associated recesses 22 of the housing part 8 and then the two housing parts 8 and 9 are placed together, the projections 21 of the base body 20 located on the other side engage in the facing recesses 22 of the other housing part 9 . In this state, the two housing parts 8, 9 are screwed together.
  • the detection means 16 are designed as optical sensors. Specifically, two pairs of sensors 23, 24 are provided, with each pair of sensors being formed by an optical transmitter 25 and an optical receiver 26. Light is guided from the optical transmitter 25 to the optical receiver 26 . If the movable switching element 12 interrupts the light beam, this is detected by the first component 14 and this information is forwarded to the second component 15 .
  • the head housing 5 has a passage 27 in the area where the two housing parts 8, 9 are separated.
  • the first contact means 17 are arranged in the area of the passage 27 .
  • the second component 15 has a housing 28 . This is screwed to the two housing parts 8,9.
  • the housing 28 accommodates the second contact means 18 on the side facing the head housing 5 and the output means 19 are arranged on the side of the housing 28 facing away from this side.
  • the output means 19 have a number of electrical displays, specifically three electrical displays 29 and an electrical connection 30 for an external device.
  • the three displays 29 are those that show the status "current applied”, "arm in one end position" and “arm in the other end position", these two end positions denoting the open and closed position of a clamping arm and denote a swivel arm whose two swivel end positions.
  • the electrical connection 30 can be connected to an external device so that the queried positions of the switching element can also be displayed there.
  • the first contact means 17 have a rigid contact plate 31 with a plurality of contacts 34 and the second contact means 18 have flexible contact springs 32 which contact the contacts 34 of the contact plate 31 under spring tension when the second component 15 is screwed to the head housing 5. It is fastened by means of two screws 33 which pass through the housing 28 and are screwed into the housing parts 8, 9.
  • the implement 1 according to the 19 and 20 differs from the first exemplary embodiment only in that the first contact means 17 are designed as contact springs 32 and the second contact means 18 are designed as a rigid contact plate 31 with the contacts 34 .
  • the contact springs 32 are assigned to the base body 20 and the contacts 34 are assigned to the housing 28 .
  • contact surfaces of contact springs 32 and contacts 34 are preferably gold-plated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Jigs For Machine Tools (AREA)

Claims (14)

  1. Appareil de travail (1) à commande pneumatique, notamment pour l'utilisation dans la construction de carrosseries de l'industrie automobile, comprenant un cylindre (2), notamment à double effet, qui présente un boîtier de cylindre (3), un piston mobile dans celui-ci et une tige de piston (4) reliée à celui-ci, mobile linéairement et sortant du boîtier de cylindre (3), pour actionner un bras, notamment un bras de serrage ou un bras pivotant de l'appareil de travail, la zone de la tige de piston (4) agencée à l'extérieur du boîtier de cylindre (3) étant agencée à l'intérieur d'un boîtier de tête (5) de l'appareil de travail (1) et la tige de piston (4) recevant à l'intérieur du boîtier de tête (5) au moins un élément de commutation (12), ainsi que comprenant un dispositif (13) relié au boîtier de tête (5) pour détecter et extraire au moins une position de l'élément de commutation (12), le boîtier de tête (5) présentant deux parties de boîtier (8, 9) reliées entre elles et le dispositif (13) étant agencé dans une zone de séparation des deux parties de boîtier (8, 9), le dispositif (13) pour détecter et extraire comprenant un premier composant (14) pour détecter l'au moins une position de l'élément de commutation (12) et un deuxième composant séparé (15) pour extraire l'au moins une position de l'élément de commutation (12), le premier composant (14) étant monté dans les deux parties de boîtier (8, 9) entre celles-ci, et le premier composant (14) présentant, sur un côté tourné vers l'intérieur du boîtier de tête (5), des moyens de détection (16) pour détecter l'au moins une position de l'élément de commutation (12) et le premier composant (14) présentant, sur un côté tourné vers l'extérieur du boîtier de tête (5), des premiers moyens de contact électrique (17), qui coopèrent avec les moyens de détection (16), le deuxième composant (15) étant agencé dans la zone du côté tourné vers l'extérieur du boîtier de tête (5) et étant relié au boîtier de tête (5), et le deuxième composant (15) présentant des deuxièmes moyens de contact électriques (18), qui sont en contact avec les premiers moyens de contact (17), et présentant des moyens d'émission (19) coopérant avec les deuxièmes moyens de contact (18), les moyens d'émission (19) émettant l'au moins une position de l'élément de commutation (12) détectée au moyen des moyens de détection (16), les moyens d'émission (19) présentant un raccord électrique (30) pour un appareil externe, caractérisé en ce que la mise en contact électrique des deux composants (14, 15) du dispositif (13) pour détecter et extraire au moins une position de l'élément de commutation (12) ayant lieu lors de la liaison du deuxième composant (15) avec le boîtier de tête (5), le premier composant (14) étant déjà monté dans le boîtier de tête (5).
  2. Appareil de travail selon la revendication 1, caractérisé en ce que le premier composant (14) présente un boîtier de base (20) en forme de barre.
  3. Appareil de travail selon la revendication 2, caractérisé en ce que le boîtier de base (20) reçoit sur un côté les moyens de détection (16) et sur un côté détourné de ce côté les premiers moyens de contact (17) .
  4. Appareil de travail selon la revendication 2 ou 3, caractérisé en ce que le boîtier de base (20) présente, sur des côtés opposés, des saillies (21) ou des retraits, qui pénètrent dans des retraits (22) ou des saillies de forme complémentaire des parties de boîtier (8, 9) .
  5. Appareil de travail selon la revendication 4, caractérisé en ce que le boîtier de base (20) présente, sur des côtés opposés, des saillies (21), notamment des saillies de forme tronconique (21), qui sont insérées, notamment sont insérées sans jeu, dans des creux (22), notamment des creux de forme tronconique (22), des parties de boîtier (8, 9) lorsque les parties de boîtier (8, 9) sont reliées entre elles.
  6. Appareil de travail selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les moyens de détection (16) sont configurés sous forme de capteurs optiques.
  7. Appareil de travail selon la revendication 6, caractérisé en ce qu'une ou plusieurs paires de capteurs (23, 24) sont prévues, la paire de capteurs respective (23 ou 24) étant formée par un émetteur optique (25) et un récepteur optique (26).
  8. Appareil de travail selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le boîtier de tête (5) présente un passage (27) dans la zone de séparation des deux parties de boîtier (8, 9), les premiers moyens de contact (17) étant agencés dans la zone du passage (27).
  9. Appareil de travail selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le deuxième composant (15) présente un boîtier (28).
  10. Appareil de travail selon la revendication 9, caractérisé en ce que le deuxième composant (15), notamment le boîtier (28), est relié aux deux parties de boîtier (8, 9), notamment est vissé à celles-ci.
  11. Appareil de travail selon la revendication 9 ou 10, caractérisé en ce que le boîtier (28) reçoit les deuxièmes moyens de contact (18) sur un côté tourné vers le boîtier de tête (5) et les moyens d'émission (19) sont agencés sur un ou plusieurs autres côtés.
  12. Appareil de travail selon l'une quelconque des revendications 1 à 11, caractérisé en ce que les moyens d'émission (19) un ou plusieurs indicateurs électriques (29) .
  13. Appareil de travail selon l'une quelconque des revendications 1 à 12, caractérisé en ce que les moyens d'émission (19) permettent d'indiquer un premier ou un deuxième état du bras, notamment deux positions d'extrémité du bras, notamment d'indiquer en outre si le dispositif (13) pour détecter et extraire est alimenté.
  14. Appareil de travail selon l'une quelconque des revendications 1 à 13, caractérisé en ce que l'un des moyens de contact (17 ou 18) présente au moins un ressort de contact (32) flexible et l'autre moyen de contact (18 ou 17) une plaque de contact qui est pourvue d'au moins un contact, le ressort de contact (32) respectif étant en contact avec un contact de la plaque de contact (31).
EP18174681.9A 2018-05-29 2018-05-29 Outil pneumatique Active EP3575035B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18174681.9A EP3575035B1 (fr) 2018-05-29 2018-05-29 Outil pneumatique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18174681.9A EP3575035B1 (fr) 2018-05-29 2018-05-29 Outil pneumatique

Publications (2)

Publication Number Publication Date
EP3575035A1 EP3575035A1 (fr) 2019-12-04
EP3575035B1 true EP3575035B1 (fr) 2022-05-11

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20030814A1 (it) * 2003-10-16 2005-04-17 Vep Automation Srl Gruppo di controllo delle posizioni di fine corsa angolare del braccio di serraggio di un dispositivo di chiusura a leva articolata.
DE202004019495U1 (de) * 2004-12-17 2005-03-10 Tünkers Maschinenbau Gmbh Durch Druckmitteldruck, insbesondere pneuamtisch, betätigte Kolben-Zylinder-Einheit, bei welcher ein mit einer Kolbenstange verbundener Kolben durch Druckmittelbeaufschlagung linear bewegbar ist, z.B. druckmittelbetätigbare Kniehebelspannvorrichtung, insbesondere für den Karosseriebau der Kfz-Industrie
ITMI20061226A1 (it) 2006-06-26 2007-12-27 Univer Spa Dispositivo per il bloccaggio e-o la centragtuira di pezzi da lavorare con posizioni operative settabili manualmente
DE102009054153A1 (de) * 2009-11-23 2011-05-26 De-Sta-Co Europe Gmbh Spannvorrichtung
EP2548700B1 (fr) 2011-07-20 2014-06-25 UNIVER S.p.A. Outil pneumatique
JP5688602B2 (ja) * 2011-09-02 2015-03-25 Smc株式会社 クランプ装置
DE102013001004B3 (de) * 2013-01-22 2014-02-06 Tünkers Maschinenbau Gmbh Vorrichtung zum Spannen, Prägen, Schweißen, Clinchen oder Schwenken von Bauteilen, mit einer Sensorvorrichtung zur Positionsbestimmung eines länglichen Verstellteils, welches mit einem Kniehebelgelenk ein schwenkbares Vorrichtungsteil antreibt

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