Abstract:
A method for cleaning a web and a web cleaner for cleaning the web from particles positioned on the web by means of an air flow. The air flow is directed against the web (9) through a pressure slit (7) whereupon the air flow is deflected and guided along the web to two suction slits (6, 8). The air flow is directed against the web by means of a nozzle in the shape of two expanding blades (10, 11), which each are ended in an edge. Also the suction slits are surrounded by two blades (12, 13, 15, 16) and another two blades (14, 17) prevent the inlet of sourrounding air. Each slit (6-8) opens into a chamber, which each comprises an air distribution tube (20, 22) provided with rows of holes (23) which are so adapted that the volume flow per length unit of the distribution tube of the slit will be essentially constant.
Abstract:
Es wird ein Verfahren zum Reinigen von Körpern, insbesondere von in einen Reinraum (R) einzubringenden Behältrn (B), vorgeschlagen, bei dem die Körper in eine Reinigungskammer (1) eingebracht werden und dort ihre Oberfläche mit in das Innere der Reinigungskammer und auf den Körper zu gerichteten Reinigungsluft-strahlen (20a-20d; 21a-21d) beaufschlagt wird, wobei gleichzeitig staubbelade ne Luft aus der Reinigungs-kammer abgesaugt (23a, 23b) wird. Vorzugsweise ist vorgesehen, daß der einzelne Körper durch die Reinigungskammer hindurch bewegt und minde stens mit gegensinnig geneigten Blasluftstrahlen zweier in Bewegungsrichtung des Körpers gesehen auf Abstand ange ordneter Blasluftquellen beaufschlagt wird, und daß zwi schen den beiden Blasluftquellen Luft aus der Reinigungs kammer abgesaugt wird.
Abstract:
A method and apparatus for cleaning an optical surface such as an eyeglass lens (3) involves the use of a cleaning head having a contact seal (7) for engaging around the perimeter of the surface to be cleaned. The cleaning head defines a shallow cleaning cavity which includes the optical surface and the surface is cleaned by generating in the cavity a high velocity air flow (8) across the surface, introducing a cleaning fluid into the air flow so as to scrub the surface (3), and terminating the introduction of cleaning fluid while maintaining the air flow to remove any residual cleaning fluid. A particular application of the method to simultaneously clean all four surfaces of the eyeglass lenses of a pair of 3-D glasses is also disclosed.
Abstract:
A method of producing a green compact (218) which includes the steps of forming a generally homogeneous powder blend of powder components; consolidating the powder blend into a green body (218) wherein the green body includes a flashing (354); impinging the green body (218) with a fluid stream so as to dislodge the flashing (354); and removing the dislodged flashing (354) from the surface of the green body (218).
Abstract:
The present invention relates to a method for purging and cleaning of recesses (29) in at least one workpiece (25), in particular blind holes, holes, bores and threaded bores, with a gas, in particular air, which comes from the compressed-air source (11a). The gas is compressed in at least one container (9) to a preset pressure and the gas compressed in the container (9) is subsequently expanded into at least one recess (29) of the workpiece (25) to remove foreign bodies, in particular chips, from said recess (29).
Abstract:
A method for the removal of debris and other unwanted matter from the bore of a blind tubular line (38) including measuring the length of the bore once it has been cleared. The cleaning and measurement method includes inserting an elongate tube (12) into the bore of the line (38), injecting (12, 14) a compressed gas through the elongate tube (38) and extracting by suction (32) from the end of the line at which the tube enters debris and other unwanted matter from the gap between the tube and the inner wall of the line, attaching a flexible elongate member to a camera insertible in the said bore in such a manner that an end portion of the said member is detected by the said camera when the camera is moved along the said bore, moving the camera and the said member attached thereto along the said bore until the said member is detected by the camera to reach the blind end of the tubular bore, and measuring the length of the said elongate member which has been fed into the tubular line to reach the said blind end.
Abstract:
A pneumatic chuck comprises a casing (1) divided by a piston (2), oriented along its longitudinal axis, into an inlet chamber (3) and a pumping chamber (4). The inlet chamber (3) is connected to a compressed air source through an air supply pipe (6) passing through an axial opening in the piston (2). The pumping chamber (4) is connected to the inlet chamber (3) through an annular gap (7) between the air supply pipe (6) and the piston (2). At the moment of its evacuation the pumping chamber (4) is connected to the atmosphere. The cross-sectional surface (10) of the piston (2), facing the pumping chamber (4), is larger than that of the end-face surface (11) of the piston (2), facing the inlet chamber (3) but smaller than that of the end-face surface (12) of an annular projection (8) on the piston (2), facing the pumping chamber (4), an additional chamber (9) being formed on the inlet chamber (3) side by said projection and by the casing (1).
Abstract:
The apparatus comprises a cylinder (12) housing a rotary scroll (14). Tubular preforms (2) are fed into the cylinder (12) in an upright state and displaced along the cylinder by a fin (16) of the scroll. A spring (24) mounted on the fin (16) engages each preform (2) in turn and inverts it. The inverted preforms are then driven over a series of nozzles (30-36) discharging ionised gas to purge the preforms of debris. The preforms are then discharged.
Abstract:
Accumulated debris is removed from building ducts by agitating the debris, with a nozzle-headed air hose (74, 101), as air flows through the ducts. The nozzle (76, 102) has ports (110) arranged so that air jets (114) cause the hose (74, 101) to whip around inside the ducts. A borescope (50) is used to simultaneously monitor progress of the cleaning. Filters (62, 70) are provided over all duct openings to collect debris and prevent it from escaping during cleaning.
Abstract:
A gas connector (10) including a nipple element (12) has two boreholes (20, 22) formed in the nipple (12) extending lengthwise therethrough. The boreholes (20, 22) diverge as they extend from the sealing end (15) of the nipple (12) to the connecting end (18). Butt weld protrusions may be formed in the connecting end in commuication with each of the boreholes. The protrusions (26a, 26b) are provided for welding gas tubing (32) to the nipple (12) at the terminal ends of the respective boreholes (20, 22). One of the boreholes is used for transmitting a process gas. The other borehole is used for introducing a purge gas into the gas supply system (100) in which the connector (10) is used. The nipple element (12) may also have its connecting end (18) adapted for connection to other gas conveying assemblies, such as cross-purge assemblies.