Abstract: An ejector system includes a primary ejector in a drive stage and a booster ejector connected in parallel with the primary ejector for simultaneously generating a vacuum across a booster stage. The booster ejector may be configured to generate a vacuum to a lower pressure in the booster stage than in the primary ejector in the drive stage. The booster stage and the drive stage may be connected to a common volume to be evacuated and a valve may be provided to close the connection between the drive stage and the volume to be evacuated when the pressure in the volume to be evacuated falls below the minimum pressure that can be generated in the drive stage.

Abstract: A vacuum generator driven by compressed air flow and arranged to supply vacuum to a vacuum gripper, wherein a vacuum flow connection is associated with the vacuum generator and arranged to be brought in flow connection with the vacuum gripper in order to supply vacuum to the vacuum gripper in result of the compressed air flow, wherein the flow connection in addition comprises a second connection arranged to supply a compressed air flow to the vacuum gripper, and wherein the flow connection comprises a valve which is actuated by a spring force in a lower position and to open the connection to the vacuum gripper and arranged to close the connection in result of an air pressure from a compressed air flow in the second connection in a higher position.

Abstract: The present invention relates to a handling device (100) for handling foodstuff, comprising a suction cup (10) and a docking piece (30) supporting the suction cup, wherein the suction cup (10) is removably attached to the docking piece (30), wherein the docking piece (30) comprises a drive nozzle (32) inserted into the suction cup (10) attached to the docking piece (30) for ejecting a fluid from the drive nozzle (32) inside of the suction cup (10), and wherein the suction cup (10) comprises a drive opening (14) for receiving the drive nozzle (32) of the docking piece (30), an outlet nozzle (16) having at least one constriction which outlet nozzle (16) is aligned with the drive nozzle (32), so that the drive nozzle (32) and the outlet nozzle (16) cooperate to form an ejector, and a suction opening (12) for applying a suction force provided by the ejector to a surface of the foodstuff to be handled.

Abstract: A pneumatic transport device (1a, 1b) for transporting a pneumatically transportable material (M) in a pneumatic system (10) by means of air for transporting the pneumatic transportable material (M) between a first pneumatic system portion (11) and a second pneumatic system portion (12), the pneumatic system portions (11, 12) including a plurality of pneumatic tubes (13) forming a continuous pneumatic transport path (CL), the device (1a, 1b) including an air source (2a, 2b), typically a vacuum source (2a), pneumatically connected to one of the first or second pneumatic system portions (11, 12) operative to provide air pressure or vacuum through the continuous pneumatic transport path (CL), and a controller (4a, 4b) configured to control the speed of the vacuum source (2a) and/or a mass-flow, respectively, of the material (M) in dependence of input from a monitoring line (3) adapted to monitor the pneumatic transport path (CL) to provide essentially constant speed of transport the pneumatically transportable m

Abstract: Push-on fitting (10) for a push-on suction cup (20) for a conveyor belt (30) for transporting or lifting goods, which push-on fitting (10) comprises a base disc (12) having a front side (11) and a rear side (13) and being adapted to be mounted in a hole (32) of the conveyor belt (30), said base disc (12) having a hole (15) for through airflow and being provided with a hollow push-on snap fitting pin (14) for through airflow, said pin (14) extending outwardly essentially perpendicular to the front side (11) and adapted to receive a push-on suction cup (20), wherein the snap fitting pin (14) comprises at least a pair of axial slots (16) adapted to provide at least a pair of flexible tongues (14a, 14b) formed in an end (17) of the pin (14) and in that the flexible tongues comprise a concentric snap fitting rim (18) having a variable diameter (D1), that can be varied by an end (19) part of the flexible tongues (14a, 14b) being acted upon, for receiving the push-on suction cup (20) provided with a washer (22) havi

Abstract: So as to offer the choice of generating a higher vacuum at quicker response times and less space requirements in a more versatile manner, the invention provides an ejector system comprising: a primary ejector in a drive stage and a booster ejector connected in parallel with said primary ejector for simultaneously generating a vacuum across a booster stage, said booster ejector being configured to generate a vacuum to a lower pressure in said booster stage than is said primary ejector in said drive stage, said booster stage and said drive stage being connected to a common volume to be evacuated and a valve being provided to close the connection between the drive stage and the volume to be evacuated when the pressure in the volume to be evacuated falls below the minimum pressure that can be generated in the drive stage.

Abstract: An object-sensing valve configured for integration in the suction duct (3) of a vacuum gripper includes a flexible and back-springing tongue (10), one end (11) of which is anchored by the side of the suction duct and the other end (14) of which extends freely outside a mouth (8; 8?) to the suction duct, the tongue dimensioned to be forced by an air flow (F) to bend towards the mouth of the suction duct and to cover the mouth incompletely in the loaded state of the tongue.

Abstract: A bellows insert (25) is shown, mountable inside a bellows for a vacuum powered tool and, in the mounted position, effective to locally limit the capacity of the bellows of compression in its longitudinal direction caused by a negative pressure introduced into the bellows. The bellows insert includes an engagement part (26) that has a shape complementary to the inside of the bellows and that, in the mounted position of the bellows insert, fills up some or all of the pleats of the bellows, within a limited area of the circumference of the bellows.

Abstract: A bellows insert (25) is shown, mountable inside a bellows for a vacuum powered tool and, in the mounted position, effective to locally limit the capacity of the bellows of compression in its longitudinal direction caused by a negative pressure introduced into the bellows. The bellows insert includes an engagement part (26) that has a shape complementary to the inside of the bellows and that, in the mounted position of the bellows insert, fills up some or all of the pleats of the bellows, within a limited area of the circumference of the bellows.

Abstract: An ejector device adapted to generate a negative pressure with compressed air, which via a compressed-air duct is fed to an ejector, the device including a valve member arranged in the compressed-air duct and controllable in order to, in the open position, allow flow of compressed air to the ejector, an air suction duct arranged between the ejector and a gripping member driven by negative pressure, and a vent valve fluidly arranged with the air suction duct and that, in an open position, places the gripping member in communication with the atmosphere. The valve member embraces: a primary valve arranged in the direction of flow of compressed air; a secondary valve arranged downstream of the primary valve; a flow section of compressed-air duct between the primary and secondary valve, the vent valve communicating with the flow section so that, in the open position of the primary valve, is continuously being subjected to a closing air pressure, independently of the open or closed position of the secondary valve.

Abstract: A vacuum generator driven by compressed air and arranged to supply vacuum to a vacuum gripper element, wherein a chamber (6) is associated with the vacuum generator and arranged to be brought in flow connection (9) with the vacuum gripper element via a valve (15) which is actuated by overpressure accumulated in the chamber to open the connection (9) to the vacuum gripper element in order to discharge the overpressure to the vacuum gripper element in result of interruption of the compressed air flow (P). The vacuum generator is characterized in that the chamber (6) in addition includes a flow connection (11) with the ambient atmosphere, and in the additional flow connection (11) a one-way valve (10) which is arranged to open the connection (11) with the atmosphere in result of the air pressure in the chamber (6) falling below the atmospheric pressure.

Abstract: An object-sensing valve configured for integration in the suction duct (3) of a vacuum gripper includes a flexible and back-springing tongue (10), one end (11) of which is anchored by the side of the suction duct and the other end (14) of which extends freely outside a mouth (8; 8?) to the suction duct, the tongue dimensioned to be forced by an air flow (F) to bend towards the mouth of the suction duct and to cover the mouth incompletely in the loaded state of the tongue.

Abstract: A suction cup for a tool driven by vacuum is presented, the suction cup in a first or upper end arranged to be brought into fluid flow communication with a vacuum source and in its opposite end arranged to be brought tightly into contact with the surface of an object to be handled. The suction cup is in its lower end arranged to be coupled to a sealing ring having a sealing surface arranged between an outer periphery and a through-opening defined by an inner periphery, and the sealing ring in the region of its inner periphery having a lip arranged to engage with the suction cup, to which purpose the suction cup in its lower end has a circumferentially running groove) in which the peripheral region and the lip of the sealing ring is insertable under form fitting engagement and in a radially overlapping relation between the groove and the lip in the region (r) of engagement.

Abstract: An ejector device effective to generate a negative pressure by element of compressed air fed to an ejector of the device via a compressed-air duct includes an air suction duct, a pressure sensor and an electrically activatable valve member arranged in the compressed-air duct for regulating the flow of compressed air to the ejector, as well as electrically supplied control electronics (6) adapted to actuate the valve member in response to the pressure in the air suction duct detected by the sensor. The device includes an accumulator by which the control electronics are supplied with electricity, and a generator, which via a charging air duct (9), is in flow communication with the compressed-air duct and is driven by compressed air for generating electrical energy, which is brought into the accumulator for charging the same.

Abstract: A suction cup for a tool driven by vacuum is presented, the suction cup in a first or upper end arranged to be brought into fluid flow communication with a vacuum source and in its opposite end arranged to be brought tightly into contact with the surface of an object to be handled. The suction cup is in its lower end arranged to be coupled to a sealing ring having a sealing surface arranged between an outer periphery and a through-opening defined by an inner periphery, and the sealing ring in the region of its inner periphery having a lip arranged to engage with the suction cup, to which purpose the suction cup in its lower end has a circumferentially running groove) in which the peripheral region and the lip of the sealing ring is insertable under form fitting engagement and in a radially overlapping relation between the groove and the lip in the region (r) of engagement.

Abstract: A vacuum generator driven by compressed air and arranged to supply vacuum to a vacuum gripper element, wherein a chamber (6) is associated with the vacuum generator and arranged to be brought in flow connection (9) with the vacuum gripper element via a valve (15) which is actuated by overpressure accumulated in the chamber to open the connection (9) to the vacuum gripper element in order to discharge the overpressure to the vacuum gripper element in result of interruption of the compressed air flow (P). The vacuum generator is characterized in that the chamber (6) in addition includes a flow connection (11) with the ambient atmosphere, and in the additional flow connection (11) a one-way valve (10) which is arranged to open the connection (11) with the atmosphere in result of the air pressure in the chamber (6) falling below the atmospheric pressure.

Abstract: An ejector device adapted to generate a negative pressure with compressed air, which via a compressed-air duct is fed to an ejector, the device including a valve member arranged in the compressed-air duct and controllable in order to, in the open position, allow flow of compressed air to the ejector, an air suction duct arranged between the ejector and a gripping member driven by negative pressure, and a vent valve fluidly arranged with the air suction duct and that, in an open position, places the gripping member in communication with the atmosphere. The valve member embraces: a primary valve arranged in the direction of flow of compressed air; a secondary valve arranged downstream of the primary valve; a flow section of compressed-air duct between the primary and secondary valve, the vent valve communicating with the flow section so that, in the open position of the primary valve, is continuously being subjected to a closing air pressure, independently of the open or closed position of the secondary valve.

Abstract: An ejector device effective to generate a negative pressure by element of compressed air fed to an ejector of the device via a compressed-air duct includes an air suction duct, a pressure sensor and an electrically activatable valve member arranged in the compressed-air duct for regulating the flow of compressed air to the ejector, as well as electrically supplied control electronics (6) adapted to actuate the valve member in response to the pressure in the air suction duct detected by the sensor. The device includes an accumulator by which the control electronics are supplied with electricity, and a generator, which via a charging air duct (9), is in flow communication with the compressed-air duct and is driven by compressed air for generating electrical energy, which is brought into the accumulator for charging the same.