DE1075815B - Holding device with air suction - Google Patents
Holding device with air suctionInfo
- Publication number
- DE1075815B DE1075815B DENDAT1075815D DE1075815DA DE1075815B DE 1075815 B DE1075815 B DE 1075815B DE NDAT1075815 D DENDAT1075815 D DE NDAT1075815D DE 1075815D A DE1075815D A DE 1075815DA DE 1075815 B DE1075815 B DE 1075815B
- Authority
- DE
- Germany
- Prior art keywords
- suction
- suction head
- control valve
- air
- holding 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.)
- Pending
Links
- 230000035699 permeability Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
- B66C1/0293—Single lifting units; Only one suction cup
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
- B66C1/0212—Circular shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
- B66C1/0256—Operating and control devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
Description
Haltevorrichtung mit Luftabsaugung Die Erfindung betrifft Haltevorrichtungen mit Luftabsaugung, bei denen zur Freigabe des Materials zu einem gewünschten Zeitpunkt die Saugluft abgeschaltet wird. Wenn dabei die Leitung an beiden Enden geschlossen gehalten wird, kann theoretisch der Unterdruck nicht zusammenbrechen, und das Material wird nicht freigegeben. Die mehr oder weniger großen Undichtigkeiten im System oder, die Luftdurchlässigkeit des Materials sorgen jedoch in der Praxis zumeist für ein langsames Nachlassen des Unterdruckes, was insbesondere bei vergleichsweise langen Leitungen zwischen Ansaugstelle und Schaltventil eine gewisse Zeit dauert. Jedoch ist diese Zeit in der Regel größer, als es für den Arbeitsablauf zulässig ist. Das nicht zeitgerecht freigegebene Material muß somit entgegen der Saugwirkung von der noch unter Saugluft stehenden Oberfläche des Saugförderers abgezogen werden.Holding device with air suction The invention relates to holding devices with air suction, where to release the material at a desired time the suction air is switched off. If the line is closed at both ends is held, theoretically the negative pressure can not collapse, and the material will not be released. The more or less large leaks in the system or, in practice, however, the air permeability of the material is usually a factor slow release of the negative pressure, which is particularly important in the case of comparatively long periods of time Lines between the suction point and the switching valve take a certain amount of time. However this time is usually longer than is permitted for the workflow. That Material that is not released in a timely manner must therefore counteract the suction effect of the The surface of the suction conveyor that is still under suction can be removed.
Außerdem kann der, Zeitpunkt nicht so genau bestimmt werden, wie es für die weitere vorbestimmte Bewegung des Materials notwendig ist.In addition, the point in time cannot be determined as precisely as it can is necessary for the further predetermined movement of the material.
Alle diese Nachteile werden gemäß der Erfindung dadurch beseitigt, daß im Saugkopf selbst oder im Anschlußrohr in der Nähe des Saugkopfes eine Nebenluftöffnung vorgesehen ist, die beim Abschalten der Saugluft durch das Steuerventil den Unterdruck im Bereich des Saugkopfes sofort aufhebt und somit das Material etwa gleichzeitig mit dem Schalten des Steuerventils freigibt. All these disadvantages are eliminated according to the invention in that that in the suction head itself or in the connection pipe near the suction head a secondary air opening is provided that when the suction air is switched off by the control valve, the negative pressure immediately picks up in the area of the suction head and thus the material at about the same time with the switching of the control valve.
Man könnte durch entsprechende Ausbildung der Saugleitung im Bereich des Steuerventils Nebenluft in die Förderleitung eindringen lassen. Es würde aber auch dann länger als zulässig dauern, bis der Unterdruck im Bereich des Saugkopfes nachläßt. Außerdem ist auch bei diesem vergleichsweise langsamen Druckausgleich der Freigabezeitpunkt nicht mit ausreichender Genauigkeit zu bestimmen. One could by appropriate training of the suction line in the area of the control valve allow secondary air to enter the delivery line. But it would even then take longer than permissible until the negative pressure in the area of the suction head subsides. In addition, this is also a comparatively slow pressure equalization the release time cannot be determined with sufficient accuracy.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung schematisch dargestellt. Die Zeichnung zeigt einen bewegbaren Saugkopf 1, der ein Materialteil 2 festhält. Der Saugkopf 1 ist über einen Schlauch3 und eine Leitung 4 an ein Steuerventil 5 angeschlossen, das mit einer Saugluftleitung 6 in Verbindung steht. Zur Abgabe des Materialteiles 2 wird das Steuerventil 5 umgesteuert und unterbricht die Verbindung von Saugluftleitung 6 zu Saugkopf 1. An exemplary embodiment of the invention is shown schematically in the drawing shown. The drawing shows a movable suction head 1, which is a material part 2 holds. The suction head 1 is connected to a control valve via a hose 3 and a line 4 5 connected, which is connected to a suction air line 6. For submission of the material part 2 is the control valve 5 is reversed and interrupts the connection from suction air line 6 to suction head 1.
Das in dem Saugkopf 1, dem Schlauch 3 und der Leitung 4 bestehende Vakuum bricht nun durch Druckausgleich über eirre Nebenluftöffnung 7 im Anschlußrohr 8 nahe dem Saugkopf 1 etwa gleichzeitig mit dem Schalten des Steuerventils 5 zusammen. Der Saugkopf 1 gibt somit das Material 2 sofort beim Schalten frei. Der dauernde Saugluftverlust durch die Nebentuftöffnung 7 muß bei der Bemessung der Vorrichtungsteile herücksichtigt werden. Man hat dabei noch den zusätzlichen Vorteil, daß geringe Undichtigkeiten zwischen Steuerventil 5 und Saugkopf 1 keinen Einfluß auf die Saugwirkung der Haltevorrichtung haben.The existing in the suction head 1, the hose 3 and the line 4 The vacuum now breaks through pressure equalization via a secondary air opening 7 in the connecting pipe 8 close to the suction head 1 approximately simultaneously with the switching of the control valve 5 together. The suction head 1 thus releases the material 2 immediately upon switching. The permanent one Loss of suction air through the secondary air opening 7 must be taken into account when dimensioning the device parts must be taken into account. You have the additional advantage that low Leaks between control valve 5 and suction head 1 have no effect on the suction effect the holding device.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1075815B true DE1075815B (en) | 1960-02-18 |
Family
ID=599554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT1075815D Pending DE1075815B (en) | Holding device with air suction |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1075815B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1167503B (en) | 1958-11-20 | 1964-04-09 | Atomic Energy Authority Uk | Gripping device |
-
0
- DE DENDAT1075815D patent/DE1075815B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1167503B (en) | 1958-11-20 | 1964-04-09 | Atomic Energy Authority Uk | Gripping device |
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