EP0855250B1 - Pneumatic full stroke sensing device - Google Patents

Pneumatic full stroke sensing device Download PDF

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Publication number
EP0855250B1
EP0855250B1 EP98100039A EP98100039A EP0855250B1 EP 0855250 B1 EP0855250 B1 EP 0855250B1 EP 98100039 A EP98100039 A EP 98100039A EP 98100039 A EP98100039 A EP 98100039A EP 0855250 B1 EP0855250 B1 EP 0855250B1
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EP
European Patent Office
Prior art keywords
pneumatic
pneumatic switch
carrier bar
switch
clamping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98100039A
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German (de)
French (fr)
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EP0855250A1 (en
Inventor
Peter Schauss
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.)
DESTACO Europe GmbH
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DE STA CO Metallerzeugnisse GmbH
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Publication of EP0855250A1 publication Critical patent/EP0855250A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/06Arrangements for positively actuating jaws
    • B25B5/12Arrangements for positively actuating jaws using toggle links
    • B25B5/122Arrangements for positively actuating jaws using toggle links with fluid drive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/16Details, e.g. jaws, jaw attachments

Definitions

  • the invention relates to a pneumatic end position interrogation device for jig headpieces with one clamping arm actuating mechanism actuated by a linear actuator, the linear actuator being a sensor for two arranged one behind the other in the encoder setting direction Has pneumatic switch that is adjustable relative to each other are.
  • Such end position interrogation devices are in particular on clamping devices for fixing workpieces well known and in use so that it is relevant no special printed evidence requirement. It is in particular on such clamping devices of interest, the end positions, i.e. on the one hand the Clamping position of the actual, from the linearly movable Actuator actuated arm and on the other hand, the Display opening position via control signal and for the control of the tensioning device in a suitable manner implement, the triggering of the control signals with a arranged on the linearly movable actuator takes place in the travel of the two pneumatic switches are arranged one behind the other. At least one of these Switch, namely for the open position indicator, is adjustable over a relatively large range fixed to the carrier (e.g. DE 295 13 586 U).
  • an end position interrogation device of The invention is the object of the invention based on such a pneumatic end position interrogation device to improve in that this to is spatially as compact as possible, on the other, separate, for the two pneumatic switches pipelines brought in from the outside are unnecessary and also relatively small opening angle positions with the pneumatic switch in question can be detected.
  • both pneumatic switches on one the Carrier strip containing pneumatic channels arranged are who the open position switch and fixable with its base is assigned that in the base the opening position switch towards the carrier bar open overflow channels parallel to the permanent pressure channel and on the other hand to the control pressure channel for the Open position indicator are arranged that both pneumatic switches are connected to the permanent pressure channel as valves on the one hand, on the other hand, each separately with the associated control pressure channels, with the permanent and control pressure channels distant from each other have overflow bores leading the overflow channels and that between the contact surface of the base and the Support surface of the support bar one of both surfaces pressable surface seal with the overflow channels corresponding Slots is arranged.
  • This training according to the invention eliminates within the installation of all hose line guides to the two switches as these are drilled in the Carrier strip are replaced.
  • a pneumatic switch covering housing can be dispensed with, since the Carrier strip the located or arranged thereon Pneumatic switch covers itself, which is explained in more detail becomes.
  • the pneumatic switch for the Open position indicator because of hose lines not more handicapped, pretty close to the other pneumatic switch be put up, i.e. they are too small opening angle positions for the tension arm (between 30 ° and 60 °) detectable.
  • an advantageous further training consists in that the pneumatic switch at one end of its Base arranged and parallel in its contact surface and another overflow channel at the same distance is arranged. Because of what is explained in more detail below the pneumatic switch for the open position indicator just in the opposite direction the carrier strip are attached, the additional Overflow channel takes over the corresponding function.
  • the support bar in the area next to the pneumatic switch for the Tension position indicator is provided with a recess, in their longitudinal side flanks parallel to each other longitudinal grooves are arranged and that in one in the recess engaging base part slightly to the longitudinal grooves offset, a transverse recess with therein Rollers is arranged between the middle and perpendicular to the recess at the effective end frustoconical clamping element is directed.
  • the interrogator sits at one For example, fork-shaped head piece between its legs or in an appropriately sized slot, if it is a closed, i.e. bowl-shaped head piece acts.
  • the outer leading to the interrogator three pneumatic lines are on three connections of the Carrier strip connected, so do not hinder the adjustability the open position switch.
  • the starting point was a pneumatic one End position interrogation device for clamping device head pieces K with one of a linear actuator LS actuatable clamping arm actuating mechanism M, the linear actuator LS one encoder G for two in the encoder setting direction Pneumatic switches 1, 2 arranged one behind the other has, of which the open position switch 2 adjustable is.
  • the clamping device or its head piece K so it is in the embodiment a closed head piece K, on which the not shown Tension arm on the laterally protruding square shaft journal WZ sits, whose end positions (clamping position / opening positions) are to be queried.
  • the permanent and control pressure channels 4, 3 point apart from each other Overflow channels 7, 8 leading overflow bores 9, 10 on, and further between the contact surface 11 of the Base 2 'and the bearing surface 12 of the support bar 6 a surface seal 13 which can be pressed from both surfaces is arranged, the corresponding to the overflow channels 7, 8 Slots 14, 15 is provided.
  • the pneumatic switch is 2 arranged on the base 2 'at one end region, and in its contact surface 11 is parallel and at the same distance a further overflow channel 7 'is arranged.
  • the reason for such training is becoming closer explained.
  • the support bar 6 in the area next to the Pneumatic switch 1 for the clamping position indicator with a Provide recess 16 in the longitudinal side flanks 16 ', longitudinal grooves 17 are arranged parallel to one another, being in a base part engaging in the recess 16 2 ", slightly offset from the longitudinal grooves 17, one transverse recess 18 with located therein Rollers 19 is arranged between the center and perpendicular to the recess at its end a truncated cone Clamping element 20 is directed.
  • a fastening extension 22 is arranged at the end of the carrier strip 6, the fastening extension 22 advantageously having axially adjustable fasteners such as grub screws with tip 23, ball spring element 24 or spring-loaded Locking pin 25, is provided (see Fig. 7A-C) .
  • FIGS. 6A, B differs 3, 4 only to the extent that here and at basically the same design of the pneumatic switch 1 like the pneumatic switch 2 also the pneumatic switch 1 for the detection of the clamping end position the support bar 6 is arranged adjustable. A such adjustability is of interest insofar as thus dead center, dead center and bottom dead center positions of the clamping arm can be set and queried.
  • the adjustability of both pneumatic switches 1, 2 is the carrier bar 6 'in contrast to that 3, 4, extends straight.
  • the permanent pressure line 4 operates both pneumatic switches 1, 2.
  • FIG. 1 shows the clamping device equipped with the interrogation device in a position in which the clamping arm reaches its closed or clamping position and the encoder 1 has switched the print head D1 of the pneumatic switch 1.
  • the pneumatic switch 1 acting as a valve (also applies to the pneumatic switch 2) opens the connection to the control pressure channel 5, which transmits the pressure pulse.
  • the pneumatic switch 2 is on the carrier strip, for example. positioned approximately in the middle so that the tension arm when opening the jig, i.e. from drive A of the linear actuator LS causes, for example, 90 ° from the clamping position is pivoted back.
  • this opening position contacts the one located on the linear actuator LS Encoder G the print head D2 of the pneumatic switch 2, the so that the connection to the permanent pressure channel 4 via Overflow bores 9, overflow channel 8, connection 5 ", Overflow channel 7, overflow bore 10 to the control pressure channel 3 manufactures.
  • the slits shown Overflow channels 7, 8 only in the base 2 "of the pneumatic switch 2 are located and the length of the necessary Adjustment range of the pneumatic switch 2 accordingly are dimensioned, i.e. in each adjustment position Detect holes 9, 10 in the support bar 6.
  • the additionally shown and advantageously provided parallel and equally spaced overflow channel 7 ' allows the pneumatic switch 2 to be turned 180 ° to be arranged on the carrier bar 6, whereby the print head D2, with basically the same position as shown, in the position indicated by dashed lines in Fig. 3 arrives, which is a much larger open position or the pivoting position of the tension arm corresponds. Despite This can adjust a large opening angle the total length of the support bar 6 is significantly reduced become.
  • the pneumatic switch 1 with its print head D1 must also not as high as shown, in the head 6 "of the support bar 6 can be arranged, but can be much deeper sit (see for example Fig. 6A, B), which means that even very small opening angles below 60 ° to 30 ° and can be queried.
  • the pneumatic switch 2 Since the interrogation device is tight during operation, on the other hand, at least the pneumatic switch 2 is adjustable must be, as explained above, this requirement corresponded by an education according to FIG. 5, which for a quick release of the base 2 "for adjustment allowed, but also at the same time the required pressing of the correspondingly slotted Surface seal 13 allows. Will that be in the pneumatic switch 2 screwed in, at its end with a truncated cone provided clamping element 20 released, get the Rolling body (see also Fig. 3) sufficient lateral play and release the base 2 ". When positioning is achieved of the pneumatic switch 2 is then the clamping element 20th simply tightened again, what to fix to the support bar 6 and for pressing on the surface seal 13 leads.
  • the carrier bar fulfills 6 also the cover function of a otherwise required cover - is the bracket the interrogator to make it easier and faster Removal and reusability, as also briefly explained, designed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Position Or Direction (AREA)

Description

Die Erfindung betrifft eine pneumatische Endstellungsabfrageeinrichtung für Spannvorrichtungskopfstücke mit einer von einem Linearstellglied betätigbaren Spannarmstellmechanik, wobei das Linearstellglied einen Geber für zwei in Geberstellrichtung hintereinander angeordnete Pneumatikschalter aufweist, die relativ zueinander verstellbar sind.The invention relates to a pneumatic end position interrogation device for jig headpieces with one clamping arm actuating mechanism actuated by a linear actuator, the linear actuator being a sensor for two arranged one behind the other in the encoder setting direction Has pneumatic switch that is adjustable relative to each other are.

Derartige Endstellungsabfrageeinrichtungen sind insbesondere an Spannvorrichtungen zum Festlegen von Werkstücken hinlänglich bekannt und in Benutzung, so daß es diesbezüglich keines besonderen druckschriftlichen Nachweises bedarf. An solchen Spannvorrichtungen ist es insbesondere von Interesse, die Endstellungen, d.h., einerseits die Spannstellung des eigentlichen, vom linear beweglichen Stellglied betätigbaren Spannarmes und andererseits dessen Öffnungsstellung per Steuersignal anzuzeigen und für die Steuerung der Spannvorrichtung in geeigneter Weise umzusetzen, wobei die Auslösung der Steuersignale mit einem am linear beweglichen Stellglied angeordneten Geber erfolgt, in dessen Stellweg die beiden Pneumatikschalter hintereinander angeordnet sind. Mindestens einer dieser Schalter, und zwar der für die Öffnungsstellungsanzeige, ist dabei über einen relativ großen Bereich verstellbar am Träger fixiert (z.B. DE 295 13 586 U).Such end position interrogation devices are in particular on clamping devices for fixing workpieces well known and in use so that it is relevant no special printed evidence requirement. It is in particular on such clamping devices of interest, the end positions, i.e. on the one hand the Clamping position of the actual, from the linearly movable Actuator actuated arm and on the other hand, the Display opening position via control signal and for the control of the tensioning device in a suitable manner implement, the triggering of the control signals with a arranged on the linearly movable actuator takes place in the travel of the two pneumatic switches are arranged one behind the other. At least one of these Switch, namely for the open position indicator, is adjustable over a relatively large range fixed to the carrier (e.g. DE 295 13 586 U).

Zu jedem der beiden Pneumatikschalter führt jeweils eine Permanentdruckleitung und eine Steuerdruckleitung. Abgesehen davon, daß also vier Leitungen vorgesehen werden müssen, die zu entsprechenden Pneumatikanschlüssen ebenfalls an der Einrichtung führen, sind diese Leitungen relativ steif bzw. unelastisch, verlangen durch ihre relativ großen Biegeradien entsprechend Raum und behindern bis zu einem gewissen Grad auch die Einstellbarkeit des Pneumatikschalters für die Anzeige der Öffnungsstellung.One leads to each of the two pneumatic switches Permanent pressure line and a control pressure line. Except from the fact that four lines are provided must also have the corresponding pneumatic connections lead to the facility, these lines are relative stiff or inelastic, due to their relative demands large bending radii according to space and obstruct to a certain extent the adjustability of the Pneumatic switch for the display of the open position.

Ausgehend von einer Endstellungsabfrageeinrichtung der eingangs genannten Art liegt der Erfindung die Aufgabe zugrunde, eine solche pneumatische Endstellungsabfrageeinrichtung dahingehend zu verbessern, daß diese zum einen räumlich so kompakt wie möglich ausgebildet ist, zum anderen separate, zu den beiden Pneumatikschaltern von außen herangeführte Leitungen entbehrlich sind und zudem auch relativ kleine Öffnungswinkelstellungen mit dem betreffenden Pneumatikschalter erfaßt werden können.Starting from an end position interrogation device of The invention is the object of the invention based on such a pneumatic end position interrogation device to improve in that this to is spatially as compact as possible, on the other, separate, for the two pneumatic switches pipelines brought in from the outside are unnecessary and also relatively small opening angle positions with the pneumatic switch in question can be detected.

Diese Aufgabe ist mit einer Einstellungsabfrageeinrichtung der eingangs genannten Art nach der Erfindung dadurch gelöst, daß beide Pneumatikschalter an einer die Pneumatikkanäle enthaltenden Trägerleiste angeordnet sind, der der Öffnungsstellungsschalter verstell- und fixierbar mit seinem Sockel zugeordnet ist, daß im Sockel des Öffnungsstellungsschalters zur Trägerleiste hin offene Überströmkanäle parallel einerseits zum Permanentdruckkanal und andererseits zum Steuerdruckkanal für die Öffnungsstellungsanzeige angeordnet sind, daß beide Pneumatikschalter einerseits als Ventile mit dem Permanentdruckkanal verbunden sind, andererseits jeweils separat mit den ihnen zugehorigen Steuerdruckkanäle, wobei Permanent- und Steuerdruckkanal zueinander distanziert zu den Überströmkanälen führende Überströmbohrungen aufweisen und daß zwischen der Anlagefläche des Sockels und der Auflagefläche der Trägerleiste eine von beiden Flächen preßbaren Flächendichtung mit den Überströmkanälen entsprechenden Schlitzen angeordnet ist.This task is with a settings query facility of the type mentioned according to the invention solved in that both pneumatic switches on one the Carrier strip containing pneumatic channels arranged are who the open position switch and fixable with its base is assigned that in the base the opening position switch towards the carrier bar open overflow channels parallel to the permanent pressure channel and on the other hand to the control pressure channel for the Open position indicator are arranged that both pneumatic switches are connected to the permanent pressure channel as valves on the one hand, on the other hand, each separately with the associated control pressure channels, with the permanent and control pressure channels distant from each other have overflow bores leading the overflow channels and that between the contact surface of the base and the Support surface of the support bar one of both surfaces pressable surface seal with the overflow channels corresponding Slots is arranged.

Durch diese erfindungsgemäße Ausbildung entfallen innerhalb der Einrichtung sämtliche Schlauchleitungsführungen zu den beiden Schalter, da diese durch Bohrungen in der Trägerleiste ersetzt sind. Ferner ist ein die Pneumatikschalter abdeckendes Gehäuse entbehrlich, da die Trägerleiste die daran befindlichen bzw. angeordneten Pneumatikschalter selbst abdeckt, was noch näher erläutert wird. Außerdem kann der Pneumatikschalter für die Öffnungsstellungsanzeige, da von Schlauchleitungen nicht mehr behindert, ziemlich dicht an den anderen Pneumatikschalter herangestellt werden, d.h., es sind auch kleine Öffnungswinkelstellungen für den Spannarm (zwischen 30° und 60°) erfaßbar. This training according to the invention eliminates within the installation of all hose line guides to the two switches as these are drilled in the Carrier strip are replaced. There is also a pneumatic switch covering housing can be dispensed with, since the Carrier strip the located or arranged thereon Pneumatic switch covers itself, which is explained in more detail becomes. In addition, the pneumatic switch for the Open position indicator, because of hose lines not more handicapped, pretty close to the other pneumatic switch be put up, i.e. they are too small opening angle positions for the tension arm (between 30 ° and 60 °) detectable.

Zwecks Vergrößerung des Erfassungsbereiches für die Öffnungsstellung des Spannarmes der betreffenden Spannvorrichtung besteht eine vorteilhafte Weiterbildung darin, daß der Pneumatikschalter an einem Endbereich seines Sockels angeordnet und in seiner Anlagefläche parallel und mit gleichem Abstand ein weiterer Überströmkanal angeordnet ist. Dadurch, was im übrigen noch näher erläutert wird, kann der Pneumatikschalter für die Öffnungsstellungsanzeige einfach in umgekehrter Richtung an der Trägerleiste angesetzt werden, wobei der zusätzliche Überströmkanal die entsprechende Funktion übernimmt.To enlarge the detection area for the open position of the clamping arm of the clamping device in question an advantageous further training consists in that the pneumatic switch at one end of its Base arranged and parallel in its contact surface and another overflow channel at the same distance is arranged. Because of what is explained in more detail below the pneumatic switch for the open position indicator just in the opposite direction the carrier strip are attached, the additional Overflow channel takes over the corresponding function.

Da die im Sockel des Öffnungsstellungsschalters angeordneten Überströmkanäle nach Maßgabe der grundsätzlichen Lösung einerseits der Abdichtung bedürfen, andererseits dieser Pneumatikschalter möglichst bequem verstell- und fixierbar in Bezug auf die Trägerleiste sein soll, besteht eine vorteilhafte Weiterbildung darin, daß die Trägerleiste im Bereich neben dem Pneumatikschalter für die Spannstellungsanzeige mit einer Eintiefung versehen ist, in deren Längsseitenflanken parallel zueinander Längsnuten angeordnet sind und daß in einem in die Eintiefung eingreifenden Sockelteil geringfügig zu den Längsnuten versetzt, eine quer durchgehende Ausnehmung mit darin befindlichen Rollkörpern angeordnet ist, zwischen die mittig und senkrecht zur Ausnehmung ein am wirksamen Ende kegelstumpfförmiges Spannelement gerichtet ist.Because the arranged in the base of the open position switch Overflow channels according to the basic Solution need sealing on the one hand, on the other hand this pneumatic switch is conveniently adjustable and should be fixable with respect to the support bar, there is an advantageous development in that the support bar in the area next to the pneumatic switch for the Tension position indicator is provided with a recess, in their longitudinal side flanks parallel to each other longitudinal grooves are arranged and that in one in the recess engaging base part slightly to the longitudinal grooves offset, a transverse recess with therein Rollers is arranged between the middle and perpendicular to the recess at the effective end frustoconical clamping element is directed.

Zwecks einfacher Entnehmbarkeit der am Kopfstück der Spannvorrichtung angesetzten Abfrageeinrichtung, und zwar um den Öffnungsstellungsschalter einstellen zu können, ist ferner vorteilhaft an der Trägerleiste über dem Pneumatikschalter für die Spannstellungsanzeige eine Verrastungsausnehmung und am unteren Ende der Trägerleiste ein Befestigungsfortsatz angeordnet, wobei wiederum vorteilhaft der Befestigungsfortsatz mit axial verstellbaren Befestigungsmitteln, wie Madenschraube mit Spitze, Kugelfederelement oder federbelasteter Verrastungsstift versehen ist. For easy removal of the on the head of the Clamping device attached interrogator, namely to be able to set the opening position switch is also advantageous on the support bar above the pneumatic switch a locking recess for the tension position indicator and at the bottom of the carrier bar Fastening extension arranged, again advantageous the attachment extension with axially adjustable attachment means, like grub screw with tip, ball spring element or spring-loaded locking pin is.

Beim Ganzen weisen natürlich die eigentlichen Druck- bzw. Schaltknöpfe der beiden Pneumatikschalter gegen den Geber am Linearstellglied. Je nach Konstruktion des Spannvorrichtungskopfstückes sitzt die Abfrageeinrichtung bei einem bspw. gabelförmigen Kopfstück zwischen dessen Schenkeln oder in einem entsprechend bemessenen Schlitz, falls es sich um ein geschlossenes, d.h. schalenförmiges Kopfstück handelt. Die zur Abfrageeinrichtung führenden äußeren drei Pneumatikleitungen sind an drei Anschlüssen der Trägerleiste angeschlossen, behindern also nicht die Einstellbarkeit des Öffnungsstellungsschalters.In the whole, of course, the actual printing or Switch buttons of the two pneumatic switches against the encoder on the linear actuator. Depending on the construction of the clamping device head piece the interrogator sits at one For example, fork-shaped head piece between its legs or in an appropriately sized slot, if it is a closed, i.e. bowl-shaped head piece acts. The outer leading to the interrogator three pneumatic lines are on three connections of the Carrier strip connected, so do not hinder the adjustability the open position switch.

Die erfindungsgemäße Endstellungsabfrageeinrichtung wird nachfolgend anhand der zeichnerischen Darstellung von Ausführungsbeispielen näher erläutert.The end position interrogation device according to the invention is below based on the graphic representation of Exemplary embodiments explained in more detail.

Es zeigt

Fig. 1
teilweise in Schnitt und Ansicht die Abfrageeinrichtung in An- und Zuordnung zu einer Spannvorrichtung;
Fig. 2
die Spannvorrichtung gemäß Fig. 1 von der Rückseite her gesehen;
Fig. 3
vergrößert die Abfrageeinrichtung teilweise im Schnitt und in Seitenansicht;
Fig. 4
die Abfrageeinrichtung gemäß Fig. 3 von der Geberseite her gesehen;
Fig. 5
einen Schnitt durch die Abfrageeinrichtung längs Linie V-V in Fig. 4;
Fig.6A,B
die Abfrageeinrichtung gemäß FIg. 3, 4 in abgewandelter Ausführungsform und
Fig.7A-C
verschiedene Ausführungsformen von Befestigungsmitteln.
It shows
Fig. 1
partly in section and view of the interrogation device in connection and assignment to a clamping device;
Fig. 2
seen from the back.
Fig. 3
enlarges the interrogation device partly in section and in side view;
Fig. 4
3 seen from the sensor side.
Fig. 5
a section through the interrogator along line VV in Fig. 4;
Fig. 6A, B
the interrogation device according to FIg. 3, 4 in a modified embodiment and
Fig. 7A-C
different embodiments of fasteners.

Ausgegangen ist in bekannter Weise von einer pneumatischen Endstellungsabfrageeinrichtung für Spannvorrichtungskopfstücke K mit einer von einem Linearstellglied LS betätigbaren Spannarmstellmechanik M, wobei das Linearstellglied LS einen Geber G für zwei in Geberstellrichtung hintereinander angeordnete Pneumatikschalter 1, 2 aufweist, von denen der Öffnungsstellungsschalter 2 verstellbar ist.In a known manner, the starting point was a pneumatic one End position interrogation device for clamping device head pieces K with one of a linear actuator LS actuatable clamping arm actuating mechanism M, the linear actuator LS one encoder G for two in the encoder setting direction Pneumatic switches 1, 2 arranged one behind the other has, of which the open position switch 2 adjustable is.

Was die Spannvorrichtung bzw. dessen Kopfstück K betrifft, so handelt es sich beim Ausführungsbeispiel um ein geschlossenes Kopfstück K, an dem der nicht dargestellte Spannarm auf dem seitlich herausragenden Vierkantwellenzapfen WZ sitzt, dessen Endstellungen (Spannstellungs-/Öffnungsstellungen) abzufragen sind.As for the clamping device or its head piece K, so it is in the embodiment a closed head piece K, on which the not shown Tension arm on the laterally protruding square shaft journal WZ sits, whose end positions (clamping position / opening positions) are to be queried.

Für eine solche an einer Spannvorrichtung anzusetzende Abfrageeinrichtung ist nun insbesondere unter Bezug auf Fig. 3, 4 wesentlich, daß beide Pneumatikschalter 1, 2 an einer die Pneumatikkanäle 3, 4, 5 enthaltenden Trägerleiste 6 angeordnet sind, der der Öffnungsstellungsschalter 2 verstell- und fixierbar mit seinem Sockel 2' zugeordnet ist. Dabei sind im Sockel 2' des Öffnungsstellungsschalters 2 zur Trägerleiste 6 hin offene Überströmkanäle 7, 8 parallel einerseits zum Permanentdruckkanal 4 und andererseits zum Steuerdruckkanal 3 für die Öffnungsstellungsanzeige angeordnet. Die Permanent- und Steuerdruckkanäle 4, 3 weisen zueinander distanzierte, zu den Überströmkanälen 7, 8 führende Überströmbohrungen 9, 10 auf, und ferner ist zwischen der Anlagefläche 11 des Sockels 2' und der Auflagefläche 12 der Trägerleiste 6 eine von beiden Flächen preßbare Flächendichtung 13 angeordnet, die mit zu den Überströmkanälen 7, 8 entsprechenden Schlitzen 14, 15 versehen ist. For one to be attached to a tensioning device Interrogator is now particularly referring to Fig. 3, 4 essential that both pneumatic switches 1, 2 on a support bar containing the pneumatic channels 3, 4, 5 6 are arranged, the opening position switch 2 adjustable and fixable with its base 2 'assigned is. Here are in the base 2 'of the open position switch 2 overflow channels 7, 8 open towards the carrier strip 6 parallel on the one hand to the permanent pressure channel 4 and on the other hand to control pressure channel 3 for the open position indicator arranged. The permanent and control pressure channels 4, 3 point apart from each other Overflow channels 7, 8 leading overflow bores 9, 10 on, and further between the contact surface 11 of the Base 2 'and the bearing surface 12 of the support bar 6 a surface seal 13 which can be pressed from both surfaces is arranged, the corresponding to the overflow channels 7, 8 Slots 14, 15 is provided.

Wie dargestellt und bevorzugt, ist der Pneumatikaschalter 2 am Sockel 2' an einem Endbereich angeordnet, und in seiner Anlagefläche 11 ist parallel und mit gleichem Abstand ein weiterer Überströmkanal 7' angeordnet. Der Grund für eine derartige Ausbildung wird noch näher erläutert.As shown and preferred, the pneumatic switch is 2 arranged on the base 2 'at one end region, and in its contact surface 11 is parallel and at the same distance a further overflow channel 7 'is arranged. The The reason for such training is becoming closer explained.

Ohne zunächst auf die funktionellen Zusammenhänge einzugehen, ist die Trägerleiste 6 im Bereich neben dem Pneumatikschalter 1 für die Spannstellungsanzeige mit einer Eintiefung 16 versehen, in deren Längsseitenflanken 16' parallel zueinander Längsnuten 17 angeordnet sind, wobei in einem in die Eintiefung 16 eingreifenden Sockelteil 2", geringfügig zu den Längsnuten 17 versetzt, eine quer durchgehende Ausnehmung 18 mit darin befindlichen Rollkörpern 19 angeordnet ist, zwischen die mittig und senkrecht zur Ausnehmung an seinem Ende ein kegelstumpfförmiges Spannelement 20 gerichtet ist.Without first going into the functional context, is the support bar 6 in the area next to the Pneumatic switch 1 for the clamping position indicator with a Provide recess 16 in the longitudinal side flanks 16 ', longitudinal grooves 17 are arranged parallel to one another, being in a base part engaging in the recess 16 2 ", slightly offset from the longitudinal grooves 17, one transverse recess 18 with located therein Rollers 19 is arranged between the center and perpendicular to the recess at its end a truncated cone Clamping element 20 is directed.

Mit Rücksicht auf eine einfache Ansetzbarkeit der Abfrageeinrichtung, insbesondere aber auch einfache Entnahme zwecks ggf. gewünschter Verstellung des Pneumatikschalters für die Öffnungsstellung, ist ferner an der Trägerleiste 6 über dem Pneumatikschalter 1 für die Spannstellungsanzeige eine Verrastungsausnehmung 21 und am unteren Ende der Trägerleiste 6 ein Befestigungsfortsatz 22 angeordnet, wobei vorteilhaft der Befestigungsfortsatz 22 mit axial verstellbaren Befestigungsmitteln, wie Madenschrauben mit Spitze 23, Kugelfederelement 24 oder federbelasteter Verrastungsstift 25, versehen ist (siehe Fig.7A-C) .In view of the ease with which the interrogation device can be set up, but especially easy removal in order to adjust the pneumatic switch if necessary for the open position, is also on the support bar 6 above the pneumatic switch 1 for the clamping position indicator a locking recess 21 and at the bottom A fastening extension 22 is arranged at the end of the carrier strip 6, the fastening extension 22 advantageously having axially adjustable fasteners such as grub screws with tip 23, ball spring element 24 or spring-loaded Locking pin 25, is provided (see Fig. 7A-C) .

Die Ausführungsform gemäß Fig. 6A, B unterscheidet sich von der gemäß Fig. 3, 4 nur insoweit, als hierbei und bei grundsätzlich gleicher Ausbildung des Pneumatikschalters 1 wie der Pneumatikschalter 2 auch der Pneumatikschalter 1 für die Erfassung der Spannendstellung ebenfalls auf der Trägerleiste 6 verstellfixierbar angeordnet ist. Eine solche Verstellbarkeit ist insofern von Interesse, als damit Übertotpunkt-, Totpunkt- und Untertotpunktstellungen des Spannarmes eingestellt und abgefragt werden können. In diesem Fall der Einstellbarkeit beider Pneumatikschalter 1, 2 ist die Trägerleiste 6' im Gegensatz zu der gemäß Fig. 3, 4, gerade erstreckt ausgebildet. Die Permanentdruckleitung 4 bedient dabei beide Pneumatikschalter 1, 2.The embodiment according to FIGS. 6A, B differs 3, 4 only to the extent that here and at basically the same design of the pneumatic switch 1 like the pneumatic switch 2 also the pneumatic switch 1 for the detection of the clamping end position the support bar 6 is arranged adjustable. A such adjustability is of interest insofar as thus dead center, dead center and bottom dead center positions of the clamping arm can be set and queried. In this case the adjustability of both pneumatic switches 1, 2 is the carrier bar 6 'in contrast to that 3, 4, extends straight. The permanent pressure line 4 operates both pneumatic switches 1, 2.

Die Funktion der Abfrageeinrichtung sei anhand der Fig. 1 und 3 bis 5 beschrieben.
Fig. 1 zeigt die mit der Abfrageeinrichtung ausgestattete Spannvorrichtung in einer Stellung, bei der der Spannarm seine Schließ- bzw. Spannstellung erreicht und der Geber 1 den Druckkopf D1 des Pneumatikschalters 1 geschaltet hat. Der als Ventil wirkende Pneumatikschalter 1 (gilt auch für den Pneumatikschalter 2) öffnet dabei die Verbindung zum Steuerdruckkanal 5, der den Druckimpuls weitergibt.
The function of the interrogator will be described with reference to FIGS. 1 and 3 to 5.
Fig. 1 shows the clamping device equipped with the interrogation device in a position in which the clamping arm reaches its closed or clamping position and the encoder 1 has switched the print head D1 of the pneumatic switch 1. The pneumatic switch 1 acting as a valve (also applies to the pneumatic switch 2) opens the connection to the control pressure channel 5, which transmits the pressure pulse.

Der Pneumatikschalter 2 ist auf der Trägerleiste bspw. etwa mittig so positioniert, daß der Spannarm beim Öffnen der Spannvorrichtung, d.h. vom Antrieb A des Linearstellgliedes LS bewirkt, bspw. um 90° aus der Spannstellung zurückgeschwenkt wird. Bei Erreichen dieser Öffnungsstellung kontaktiert der am Linearstellglied LS befindliche Geber G den Druckkopf D2 des Pneumatikschalters 2, der damit die Verbindung zum Permanentdruckkanal 4 via Überströmbohrungen 9, Überströmkanal 8, Verbindung 5", Überströmkanal 7, Überströmbohrung 10 zum Steuerdruckkanal 3 herstellt. In diesem Zusammenhang sei darauf hingewiesen, daß sich die schlitzförmig dargestellten Überströmkanäle 7, 8 nur im Sockel 2" des Pneumatikschalters 2 befinden und in ihrer Länge dem notwendigen Verstellbereich des Pneumatikschalters 2 entsprechend bemessen sind, d.h., in jeder Verstellposition die Bohrungen 9, 10 in der Trägerleiste 6 erfassen. Der zusätzlich dargestellte und vorteilhaft vorgesehene, parallele und gleich beabstandete Überströmkanal 7' ermöglicht es, den Pneumatikschalter 2 um 180° gedreht auf der Trägerleiste 6 anzuordnen, wodurch der Druckkopf D2, bei grundsätzlich gleicher Position, wie dargestellt, in die gestrichelt in Fig. 3 angedeutete Position gelangt, was einer wesentlich größeren Öffnungsstellung bzw. Rückschwenkstellung des Spannarmes entspricht. Trotz Einstellbarkeit eines großen Öffnungswinkels kann dadurch die Gesamtlänge der Trägerleiste 6 wesentlich reduziert werden.The pneumatic switch 2 is on the carrier strip, for example. positioned approximately in the middle so that the tension arm when opening the jig, i.e. from drive A of the linear actuator LS causes, for example, 90 ° from the clamping position is pivoted back. When this opening position is reached contacts the one located on the linear actuator LS Encoder G the print head D2 of the pneumatic switch 2, the so that the connection to the permanent pressure channel 4 via Overflow bores 9, overflow channel 8, connection 5 ", Overflow channel 7, overflow bore 10 to the control pressure channel 3 manufactures. In this context, be careful noted that the slits shown Overflow channels 7, 8 only in the base 2 "of the pneumatic switch 2 are located and the length of the necessary Adjustment range of the pneumatic switch 2 accordingly are dimensioned, i.e. in each adjustment position Detect holes 9, 10 in the support bar 6. The additionally shown and advantageously provided parallel and equally spaced overflow channel 7 ' allows the pneumatic switch 2 to be turned 180 ° to be arranged on the carrier bar 6, whereby the print head D2, with basically the same position as shown, in the position indicated by dashed lines in Fig. 3 arrives, which is a much larger open position or the pivoting position of the tension arm corresponds. Despite This can adjust a large opening angle the total length of the support bar 6 is significantly reduced become.

Der Pneumatikschalter 1 mit seinem Druckkopf D1 muß auch nicht so hoch, wie dargestellt, im Kopf 6" der Trägerleiste 6 angeordnet werden, sondern kann wesentlich tiefer sitzen (siehe hierzu bspw. Fig. 6A, B), was bedeutet, daß auch sehr kleine Öffnungswinkel unter 60° bis 30° eingestellt und abgefragt werden können.The pneumatic switch 1 with its print head D1 must also not as high as shown, in the head 6 "of the support bar 6 can be arranged, but can be much deeper sit (see for example Fig. 6A, B), which means that even very small opening angles below 60 ° to 30 ° and can be queried.

Da die Abfrageeinrichtung bei Betrieb einerseits dicht, andererseits mindestens aber der Pneumatikschalter 2 verstellbar sein muß, ist, wie vorerläutert, diese Maßgabe durch eine Ausbildung gemäß Fig. 5 entsprochen, die zum einen eine schnelle Freigabe des Sockels 2" zwecks Verstellung erlaubt, zum anderen aber auch gleichzeitig die erforderliche Anpressung der entsprechend geschlitzten Flächendichtung 13 ermöglicht. Wird das im Pneumatikschalter 2 eingeschraubte, an seinem Ende mit einem Kegelstumpf versehene Spannelement 20 gelöst, erhalten die Rollkörper (siehe auch Fig. 3) ausreichend Querspiel und geben den Sockel 2" frei. Bei erreichter Positionierung des Pneumatikschalters 2 wird dann das Spannelement 20 einfach wieder festgezogen, was zur Fixierung an der Trägerleiste 6 und zum Anpressen der Flächendichtung 13 führt.Since the interrogation device is tight during operation, on the other hand, at least the pneumatic switch 2 is adjustable must be, as explained above, this requirement corresponded by an education according to FIG. 5, which for a quick release of the base 2 "for adjustment allowed, but also at the same time the required pressing of the correspondingly slotted Surface seal 13 allows. Will that be in the pneumatic switch 2 screwed in, at its end with a truncated cone provided clamping element 20 released, get the Rolling body (see also Fig. 3) sufficient lateral play and release the base 2 ". When positioning is achieved of the pneumatic switch 2 is then the clamping element 20th simply tightened again, what to fix to the support bar 6 and for pressing on the surface seal 13 leads.

Da die Schalterseite der Abfrageeinrichtung im montierten Zustand im Eingriffsschlitz bzw. -spalt des Kopfstückes K nicht zugänglich ist - wie vorerwähnt, erfüllt die Trägerleiste 6 gleichzeitig auch die Abdeckfunktion eines sonst erforderlichen Abdeckgehäuses -, ist die Halterung der Abfrageeinrichtung zwecks einfacher und schneller Entnahme und Wiedereinsetzbarkeit, wie ebenfalls kurz vorerläutert, gestaltet.Since the switch side of the interrogator is installed State in the engagement slot or gap of the head piece K is not accessible - as mentioned above, the carrier bar fulfills 6 also the cover function of a otherwise required cover - is the bracket the interrogator to make it easier and faster Removal and reusability, as also briefly explained, designed.

Im Kopfstück K ist dafür quer durchgehend eine Spannhülse 21' eingesetzt, in die die mit einer entsprechenden Verrastungsausnehmung 21 versehene Trägerleiste 6, die rückseitig oben mit einer Kippabrundung 21" versehen ist, eingesetzt und dann in die in Fig. 1 dargestellte Stellung eingeschwenkt bzw. auch aus dieser Stellung ausgeschwenkt werden kann.In the head piece K there is a clamping sleeve running across it 21 'used, in which the corresponding latching recess 21 provided support bar 6, the back is provided with a 21 "tilting top, used and then in the position shown in Fig. 1 swung in or swung out of this position can be.

Die eigentliche Fixierung der Abfrageeinrichtung am Kopfstück K einer Spannvorrichtung K erfolgt dann mittels eines Befestigungsfortsatzes 22 oder, wenn Befestigungsmittel gemäß Fig. 7A-C am Kopfstück K vorgesehen sind, mittels Querverrastung, wie Madenschraube 23 mit Spitze, Kugelfederelement 24 oder federbelasteter Verrastungsstift 25, für deren Eingriff in der Trägerleiste 6 entsprechende Seitenflankenaufnahmen 26 vorgesehen sind. The actual fixation of the query device on Headpiece K of a clamping device K is then carried out by means of an attachment extension 22 or, if attachment means 7A-C provided on the head piece K. are, by means of cross locking, such as grub screw 23 with Tip, ball spring element 24 or spring-loaded Locking pin 25 for engagement in the Carrier strip 6 corresponding side flank receptacles 26 are provided.

Die besondere Ausführungsform der Abfrageeinrichtung gemäß FIg. 6A, B, die auch eine Verstellbarkeit des Pneumatikschalters 1 vorsieht, bedarf keiner zusätzlichen Erläuterung, da bei dieser Ausführungsform Funktion und Ausbildung des Pneumatikschalters 1 den beschriebenen Funktionen und Ausbildungen des Pneumatikschalters 2 entspricht.The special embodiment of the interrogator according to FIg. 6A, B, which is also an adjustability of the pneumatic switch 1 provides no additional explanation, because in this embodiment function and Formation of the pneumatic switch 1 described Functions and training of the pneumatic switch 2 corresponds.

Claims (6)

  1. A pneumatic end position inquiry means for headers (K) of clamping assemblies, comprising a clamping arm adjusting mechanism (M) actuable by a linear control element (LS) including an indicator (G) for two pneumatic switches (1, 2) series arranged in the regulating path of the said indicator, with the said switches (1, 2) being relatively adjustable with respect to one another,
    characterized in
    that both pneumatic switches (1,2) are disposed on a carrier bar (6) containing the pneumatic channels (3, 4, 5) to which bar is associated the pneumatic switch (2) for the opening position display, with the socket (2) thereof, in a manner adjustable and fixable relative to the pneumatic switch (1),
    that both pneumatic switches (1, 2), on the one hand, are connected in the form of valves to the permanent pressure channel (4) and, on the other hand, are connected respectively separately to the associated control pressure channels (5, 3),
    that arranged within the socket (2') of the opening position switch (2) are over-flow channels (7,8) open toward the carrier bar (6) and, on the one hand, extending in parallel to the permanent pressure channels (4) and, on the other hand, extending in parallel to the control pressure channels (3) for the opening position display, with the permanent and control pressure channels (4, 3) including overflow bores (9, 10) leading in spaced relationship to the overflow channels (7, 8), and
    that arranged between the abutment face (11) of the socket (2') and the abutment face (12) of the carrier bar (6) is a surface packing (13) adapted to be pressurized by the two faces and including slots (14, 15) corresponding to the over-flow channels (7, 8).
  2. A means according to claim 1,
    characterized in
    that the pneumatic switch (2) is arranged on the socket (2') on one of the end sections thereof, and that another over-flow channel (7') is arranged in the abutment face (11) in parallel and equidistantly.
  3. A means according to claims 1 or 2,
    characterized in
    that the carrier bar (6), in the portion neighboring the pneumatic switch (1) for the clamping position display, is provided with a depression (16) in the longitudinal side flanks (16') of which are arranged longitudinal grooves extending in parallel with respect to one another, and
    that a transversely extending continuous recess (18) with rolling members (19) contained therein is arranged, in slightly staggered relationship to the longitudinal grooves (17), within a socket portion (2") engaging the depression (16), with a clamping element (20) conically shaped on the one end thereof being located between the said rolling members in a direction central and vertical to recess (18).
  4. A means according to any one of claims 1 to 3,
    characterized in
    that arranged on the carrier bar (6) above the pneumatic switch (1) for the clamping position display is a locking recess (21), and arranged on the bottom end of the carrier bar (6) is a mounting extension (22).
  5. A means according to any one of claims 1 through 3,
    characterized in
    that arranged on the carrier bar (6), above the pneumatic switch (1) for the clamping position display, is a locking recess (21) and arranged at the bottom, on at least one flank, is a unit (26) accommodating a side flank for axially adjustable mounting means, such as a tipped grub screw (23), a ball spring element (24), a spring-loaded locking pin (25), arranged within the header (K).
  6. A means according to any one of claims 1 through 5, characterized in
    that the pneumatic switch (1) being of the same configuration as the pneumatic switch (2) is also adjustably arranged on the carrier bar (6').
EP98100039A 1997-01-23 1998-01-03 Pneumatic full stroke sensing device Expired - Lifetime EP0855250B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702203A DE19702203A1 (en) 1997-01-23 1997-01-23 Pneumatic end position interrogation device
DE19702203 1997-01-23

Publications (2)

Publication Number Publication Date
EP0855250A1 EP0855250A1 (en) 1998-07-29
EP0855250B1 true EP0855250B1 (en) 2000-10-25

Family

ID=7818070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98100039A Expired - Lifetime EP0855250B1 (en) 1997-01-23 1998-01-03 Pneumatic full stroke sensing device

Country Status (3)

Country Link
EP (1) EP0855250B1 (en)
DE (2) DE19702203A1 (en)
ES (1) ES2152110T3 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8908288U1 (en) * 1989-07-07 1989-09-21 Tünkers, Josef Gerhard, 4030 Ratingen Knee lever clamping device for body construction
DE9105755U1 (en) * 1991-05-08 1991-06-27 De-Sta-Co Metallerzeugnisse Gmbh, 6000 Frankfurt Clamping device
DE29513586U1 (en) * 1995-08-24 1995-12-07 Tünkers Maschinenbau GmbH, 40880 Ratingen Toggle clamp device for body construction
DE19616441C1 (en) * 1996-04-25 1997-06-26 Tuenkers Maschinenbau Gmbh Toggle joint clamping device for vehicle bodywork, with grip head

Also Published As

Publication number Publication date
DE19702203A1 (en) 1998-07-30
EP0855250A1 (en) 1998-07-29
ES2152110T3 (en) 2001-01-16
DE59800308D1 (en) 2000-11-30

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