# US 2013/0156882 A1 · Device for Blowing Out Hollow Bodies Made of Plastics > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0156882 A1 - Document ID: US20130156882A1 - Status: Published application - Kind: A1 - Application number: 13/719,929 - Filed: 2012-12-19 - Published: 2013-06-20 - Earliest claimed: 2011-12-19 - Assignees: M. Tanner AG - Inventors: MARCEL TANNER - Web page: https://patentgrep.com/patent/US20130156882A1 ## CPC - B29C 49/36: rotatable about one axis - B08B 9/283: {by gas jets} - B08B 9/286: {the gas being ionized} - B08B 9/34: Arrangements of conduits or nozzles - B29C 49/06: Injection blow-moulding - B29C 49/42416: {Purging or cleaning the preforms} - B29C 2949/0715: the preform having one end closed - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL ## Abstract A device has a freely rotatable rotor (13), which is equipped at its circumference with multiple nozzle heads (14). The rotor (13) is arranged above a row of preforms (1), wherein these preforms (1) are moved onto feed rails (7, 8) in conveying direction (9). At least one of the nozzle heads (14) respectively immerses into the hollow space (11) of a preform (1) and is taken along by the latter in conveying direction (9). During the immersion, a gas stream is blown into the hollow space (11) of the preform (1) by a nozzle (16) in the nozzle head (14). ## Claims ### Claim 1 A device for blowing out hollow bodies (1), such as plastic containers, in a conveyor assembly, wherein the hollow bodies (1) are open at one end (2) and are closed at the other end (3) and comprise at the open end (2) a head (4) with a collar (5), the conveyor assembly comprising a transport line (6) with feed rails (7, 8) being inclined in a transport direction (9), wherein the hollow bodies (1) are supported with the collar (5) and with the upwardly directed open end (2) on the feed rails (7, 8) and are arranged relative to one another in a row with an axial distance (10) and are conveyed along the transport line, and wherein a facility for blowing a gas stream into the hollow space (11) of the hollow bodies (1) is arranged in a partial area of the transport line (6), the device comprising: a rotatable rotor (13) above and at a distance from the feed rails (7, 8), the rotatable rotor having multiple nozzle heads (14) directed radially outwardly, each nozzle head (14) comprising a gas feed line (15) and a nozzle (16), all nozzles (16) being arranged in a common plane wherein the common plane is arranged approximately perpendicular to a supporting surfaces (12) of the feed rails (7, 8) and runs through an central axis (17) of the hollow bodies (1) and during conveying of the hollow bodies (1), the rotor (13) rotates in a conveying direction (12, 18), and wherein, in an area (19) between the rotor (13) and the feed rails (7, 8), at least one nozzle head (14) interacts with the head area (4) of a respective hollow body (1). ### Claim 2 (depends on 1) The device according to claim 1, wherein the nozzle heads (14) with the nozzles (16) respectively comprise a same pitch circle distance (20, 21) to one another, and the pitch circle distance (20, 21) is a function of the axial distance (10) existing in the conveying direction (9) between adjacent hollow bodies (1). ### Claim 3 (depends on 1) The device according to claim 1, wherein, in the area of an operating position in which a radial axis (24) of a nozzle head (14) coincides with the longitudinal axis (17) of a hollow body (1), the nozzle head (14) at least partially immerses into the hollow space (11) of the hollow body (1). ### Claim 4 (depends on 1) The device according to claim 1, wherein each of the nozzle heads (14) consists of a spherical segment, the height (30) of which is at least as large as the radius (29) of the sphere, whereby the spherical segment is flattened on two sides and parallel as well as symmetrically relative to a central plane (41) and comprises two lateral faces (42, 43). ### Claim 5 (depends on 1) The device according to claim 1, wherein the nozzle heads (14) are connected via a connection element (22) with the rotor and that this connection element (22) comprises a lengthwise adjustment (23). ### Claim 6 (depends on 1) The device according to claim 1, wherein the rotor (13) is supported on a fixed rotor axis (31) and the rotor axis (31) comprises an inner gas feed line (34), which is guided in the area of the common nozzle plane via a bore (36) radially outwards into the bearing bore (49) of the rotor (13), whereby the radially outwards directed bore (36) is directed towards the intermediate area (19) between the rotor (13) and the feed rails (7, 8). ### Claim 7 (depends on 1) The device according to claim 1, including outer gas feed lines (15) of each nozzle head (14) guided through connection elements (22) radially inwardly up to a bearing bore (49) of the rotor (30). ### Claim 8 (depends on 1) The device according to claim 1, including an auxiliary drive for supporting the rotational movement of the rotor (13). ### Claim 9 (depends on 1) The device according to claim 1, wherein, as seen in the transport direction (9) of the hollow bodies (1), an additional blow-out device is arranged in front of the rotor (13) with the nozzle head (14) by which ionized gas is blown into the hollow space (11) of the hollow bodies (1). ### Claim 10 (depends on 1) The device according to claim 1, wherein, as seen in the transport direction (9) of the hollow bodies (1), two or more rotors (13) with nozzle heads (14) are arranged one behind another. ### Claim 11 (depends on 4) The device according claim 4, wherein, in a partial area of the sphere surface of the spherical segment respectively the nozzle head (14), grooves are formed. ### Claim 12 (depends on 6) The device according to claim 6, wherein, at the outlet end of the radially outwards directed bore (36) at the surface of the rotor axis (31) a widened opening (37) is formed, by which the feed flow area of gas to the respective gas feed line (15) of a nozzle head (14), being in operative connection, is determined. ### Claim 13 (depends on 1) The device according to claim 1, wherein an immersion depth of the nozzle head (14) into the hollow space (11) of the hollow body (1) is at least as large as the radius (29) of the spherical segment, out of which the nozzle head (14) is formed. ### Claim 14 (depends on 1) The device according to claim 1, wherein the rotor (13) is unmotorized. ### Claim 15 (depends on 3) The device according to claim 3, wherein a secure operative connection between the nozzle head (14) and the hollow body (1) is created, whereby the nozzle head (14) of the hollow body (1), which moves in transport direction, is taken along and thereby the rotor (13) rotated until the nozzle head (14) swings out of the hollow space (11) of the hollow body (14). ### Claim 16 (depends on 8) The device according to claim 8, wherein the auxiliary drive is formed in such a way that radially directed elements (E) at the rotor (13) are blown on by an air stream (L).