FR2547289A3

FR2547289A3 - Suction cup attaching onto a load

Info

Publication number: FR2547289A3
Application number: FR8319744A
Authority: FR
Original assignee: Atlas Copco AB
Current assignee: Atlas Copco AB
Priority date: 1983-06-10
Filing date: 1983-12-09
Publication date: 1984-12-14
Also published as: IT8336331V0; FR2547289B3; DE8335309U1

Abstract

Suction cup attached onto a load intended for a load-handling system, comprising an elastic conical face 10 which has a central passage 12 allowing air to pass in order to form a connection with a suction source and which has a first annular sealing device 13 on its external periphery, a second annular sealing device 16 located inside the first device 13, and a central part 17 which supports a load surrounding the abovementioned passage 12, and characterised in that a certain number of reinforcing ridges 14 extending radially are provided on the outside of the primary sealing device 13, and in that the abovementioned central part 17 has a certain number of annular concentric grooves 19 as well as a number of radial outlet notches 18 which extend from the abovementioned passage 12 across the grooves 19.

Description

Linvention concerne une ventouse en prise avec une charge destinée à un svstème de maniement de charge. En parti- culier, l'invention concerne une ventouse comprenant une paroi conique élastique qui possède un passage central de communication d'air nour liaison à une source d'aspiration et qui possède sur sapériphérie un premier dispositif annulaire d'étanchéité, un second dispositif annulaire d'étanchéité situe à l'intérieur du premier, et une partie centrale qui supporte une charge entourant le passage précité. The invention relates to a suction cup engaging a load for a load handling system. In particular, the invention relates to a suction cup comprising an elastic conical wall which has a central air communication passage nour connection to a suction source and which has on the periphery a first annular sealing device, a second device annular sealing located inside the first, and a central part which supports a load surrounding the aforementioned passage.

Une ventouse connue de ce type présente l'inconvénient que la forme de la partie centrale qui supporte la charge permet des variations rapides de la pression par rapport à la surface de la charge. Un autre inconvénient des ventouses connues de ce type est le très faible dispositif extérieur d'étanchéité qui, dans certains cas, tend à êre plié vers l'intérieur lors de la venue en contact avec des surfaces de charge inégales
L'objet principal de l'invention est de réaliser une ventouse améliorée dans laquelle les problèmes mentionnés cidessus sont supprimés.A known suction cup of this type has the disadvantage that the shape of the central part which supports the load allows rapid variations in pressure relative to the surface of the load. Another disadvantage of known suction cups of this type is the very weak external sealing device which, in certain cases, tends to be folded inwards when coming into contact with uneven load surfaces.
The main object of the invention is to provide an improved suction cup in which the problems mentioned above are eliminated.

Sur les dessins
La figure 1 est une vue en perspective de l'extérieur de la ventouse.On the drawings
Figure 1 is a perspective view of the exterior of the suction cup.

La figure 2 est une vue en perspective de l'intérieur de la ventouse. Figure 2 is a perspective view of the interior of the suction cup.

La figure 3 est une coupe transversale de la ventouse suivant l'invention. Figure 3 is a cross section of the suction cup according to the invention.

Comme le montrent les dessins, la ventouse suivant l'invention comprend une paroi élastique 10 faite d'un matériau analogue à du caoutchouc. La paroi élastique est reliée, de préférence par vulcanisation, à une douille 11 en métal rigide qui possède un passage central 12 de communication d'air. Ce passage possède un filetage interne pour connexion à un conduit de communication d'air. La paroi élastique 10 comprend un dispositif annulaire extérieur 13 qui, à son extérieur, possède un grand nombre d'arêtes radiales de renforcement 14. Ces arêtes de renforcement 14 sont en forme de cales et les extrémités épaisses ajr fleurent sensiblement la périphérie du dispositif annulaire 13. As shown in the drawings, the suction cup according to the invention comprises an elastic wall 10 made of a rubber-like material. The elastic wall is connected, preferably by vulcanization, to a sleeve 11 made of rigid metal which has a central passage 12 for air communication. This passage has an internal thread for connection to an air communication duct. The elastic wall 10 comprises an external annular device 13 which, on the outside, has a large number of radial reinforcing edges 14. These reinforcing edges 14 are in the form of wedges and the thick ends ajr substantially flower the periphery of the annular device 13.

A l'intérieur du dispositif annulaire 13 se trouve un dispositif annulaire secondaire 16. Inside the annular device 13 is a secondary annular device 16.

En outre, la ventouse comprend une partie porteuse centrale 17 qui possède six mortaises radiales 18 ainsi qu'un certain nombre de rainures annulaires concentriques 19. Cette conception nouvelle et améliorée de la partie centrale 17 qui supporte la charge assure une évacuation rapide de l'air depuis toutes les zones de la partie centrale, ainsi quaune remise çon pression de ces zones lors de la cessation d'activité de la ver,- touse, ce qui permet un ionctionnement sur et très rapide de celle-ci. In addition, the suction cup includes a central support part 17 which has six radial mortises 18 as well as a number of concentric annular grooves 19. This new and improved design of the central part 17 which supports the load ensures rapid evacuation of the air from all the zones of the central part, as well as a pressure relief of these zones when the worm ceases to operate, - coughs, which allows safe and very rapid ionization.

En ce qui concerne les arêtes de renforcement 14, elles réduisent efficacement le risque que le dispositif périphé- rique 13 sont plié vers l'intérieur lors de la manipulation de charges à surfaces inégales. En conséquence, la présence des arêtes de renforcement 14 signifie une amélioration importante de la sécurité par rapport à des ventouses anterieures, et en combinaison avec la partie nouvellement désignée de la partie centrale 17 qui support la charge, le renforcement de la péri- phérie du dispositif contribue à un fonctionnement plus sûr et plus Précis de la ventouse. As regards the reinforcing edges 14, they effectively reduce the risk that the peripheral device 13 is bent inward when handling loads with uneven surfaces. Consequently, the presence of the reinforcement edges 14 signifies a significant improvement in safety with respect to anterior suction cups, and in combination with the newly designated part of the central part 17 which supports the load, the reinforcement of the periphery of the device contributes to safer and more precise operation of the suction cup.

Claims

1 - Suction cup engaged with a load intended for a load handling system, comprising an elastic conical wall (10) which has a central passage (12) for air communication to form a connection with a suction source and which has a first annular sealing device (13). on its outer periphery, a second annular sealing device (16) located inside the first device (13), and a central part (17) which supports a load surrounding the passage (12) mentioned above, and characterized in that a number of radially extending reinforcement edges (14) are provided outside the primary sealing device (13), and in that the aforementioned central part (17) has a number of grooves concentric annular (19) and a number of radial discharge mortises (18) which extend from the aforementioned passage (12) through the grooves (19),

2 - Suction cup according to claim 1, characterized in ce.que es mortises radial evacuation (18) are at least; number of five and arranged at equal angular intervals.

3 - Suction cup according to one of claims 1 and 2, characterized in that the reinforcing edges (14) are in the form of shims and arranged with their thick ends which substantially flush with the outer periphery of the primary device (13) above.