Device for opening containers for liquids and for holding the corresponding lids

Device for opening, re-closing, or holding a lid of a container, the container provided with an oblong spout having a through hole for the passage of a product present in the container, comprising:

• a removal head of the pneumatic type, the removal head including:
• a first pneumatic circuit of fluid under pressure provided with a feed pipe and a through housing channel which develops along an axis and in which the spout is at least partly housed, said housing channel being in fluidic communication with said feed pipe for the passage of the fluid under pressure through the through hole of the spout, and
• a holding member, associated with the removal head, to cooperate with the spout,
• wherein the holding member forms a second pneumatic circuit of fluid under pressure and is provided with a blowing-in pipe different from the feed pipe of the first pneumatic circuit of fluid under pressure, and in that the holding member is actuated pneumatically by means of the fluid under pressure arriving from the blowing-in pipe of the second pneumatic circuit of fluid under pressure, to define at least a reversible condition of holding the spout inside the housing channel,
• wherein the holding member comprises elastically deformable means which laterally delimit said housing channel, said elastically deformable means comprising inflatable packing configured to be deformed elastically, in response to the fluid under pressure from the blowing-in pipe, to reduce the housing channel and radially engage the spout to hold the spout, and
• wherein the removal head comprises a closing sleeve and a centering sleeve coupled to the closing sleeve, and wherein the inflatable packing has a first portion engaging the closing sleeve and a second portion engaging the centering sleeve.