# US 2002/0157550 A1 · Cleaning device for printing-press cylinders > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2002/0157550 A1 - Document ID: US20020157550A1 - Status: Published application - Kind: A1 - Application number: 09/936,384 - Filed: 2001-11-14 - Published: 2002-10-31 - Earliest claimed: 2000-01-08 - Assignees: Baldwin Grafotec GmbH - Inventors: Torsten Schmutz - Web page: https://patentgrep.com/patent/US20020157550A1 ## CPC - B41F 35/00: Cleaning arrangements or devices {(in manifolding apparatus or the like B41L41/00)} - B65H 75/08: of circular or polygonal cross-section (cans or receptacles B65H75/16) - B41P 2235/24: using rolls of cleaning cloth - B41F: PRINTING MACHINES OR PRESSES (manifolding devices or office printing machines B41L) - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES - B41P: INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS ## Abstract A cleaning device for printing machine cylinders and bearings (2, 60) for this for the rotatable mounting of a cloth spindle (4, 92) for a cleaning cloth. At least one of the bearings (2, 60) has a bearing bush (14, 64) which is provided with an external thread (16, 66) and which can therefore be screwed into an internal thread (17, 67) of a side part (20, 70). ## Claims ### Claim 1 A cleaning device for printing machine cylinders, containing bearings (2, 60, 120, 160) for the rotatable mounting of a clean-cloth spindle (4) and of a dirty-cloth spindle (92), in each case at their spindle ends, in side parts (20, 70), in order to rewind a clean cleaning cloth (90) from the clean-cloth spindle (4) onto the driveable dirty-cloth spindle (92) and, on the path of cloth movement between the two spindles, to bring a cloth portion (95) into contact with a printing machine cylinder to be cleaned, characterized in that at least one of the bearings (2, 60, 120, 160) has a bearing bush (14, 64, 114, 164) which is provided with an external thread (16, 66, 116) and which can therefore be screwed into an internal thread (17, 67, 117) of the respective side part (20, 70), and in that an inner bearing part (6, 62, 119, 162), which is designed for receiving a spindle end to be carried by it, extends axially at least partially through the bearing bush and is positioned in the bearing bush. ### Claim 2 (depends on 1) The cleaning device as claimed in claim 1, characterized in that the inner bearing part has a bearing bolt (6, 62, 119, 162) which is mounted rotatably in the bearing bush and which has an end portion, designed as an insertable part, for forming an insertion connection with the spindle end to be carried by it. ### Claim 3 (depends on 1) The cleaning device as claimed in claim 1, characterized in that the inner bearing part has a bearing bolt (6, 119) which is mounted rotatably in the bearing bush (14, 114) and which has an end portion (10), designed as an insertable coupling part, for the rotationally fixed coupling of a spindle end. ### Claim 4 (depends on 3) The cleaning device as claimed in claim 3, characterized in that the bearing bush (14) and the bearing bolt (6) each have at least one end face (28, 30) which are braced resiliently against one another by at least one spring (32) clamped axially with prestress between the bearing bush and the bearing bolt and which thereby generate between themselves a rotational frictional resistance which has to be overcome for the rotation of the bearing bolt relative to the bearing bush. ### Claim 5 (depends on 2) The cleaning device as claimed in claim 2, characterized in that between the bearing bolt (62, 162) and the bearing bush (64, 164) is clamped axially with prestress a spring (74) which urges the bearing bolt inward, in the direction of the spindle end to be carried by the latter, against a stop (80) which is provided on the bearing bush (64, 164), and in that the bearing bolt (62, 162) has a grip part which projects outward from the bearing bush and at which the bearing bolt can be gripped in order to draw it axially outward relative to the bearing bush and at the same time draw it off from the spindle end. ### Claim 6 (depends on 3) The cleaning device as claimed in claim 3, characterized in that, in the case of at least one bearing (120) of the dirty-cloth spindle (4), the bearing bolt (119) is provided, at its end opposite its insertable coupling part (10), with a freewheel drive (98), the rotary drive element of which, during its rotation, corotates the bearing bolt (119) in one direction of rotation, but, during its rotation, not in the opposite direction of rotation. ### Claim 7 (depends on 6) The cleaning device as claimed in claim 6, characterized in that, in the case of the bearing (160) provided at the other end of the dirty-cloth spindle (92), between the bearing bolt (162) and the bearing bush (164) is clamped axially with prestress a spring (74) which urges the bearing bolt (162) inward, in the direction of the spindle end to be carried by the latter, against a stop (80) which is provided on the bearing bush (164), and in that the bearing bolt (162) has a grip part (86) which projects outward from the bearing bush and at which the bearing bolt can be gripped in order to draw it axially outward relative to the bearing bush and at the same time draw it off from the spindle end. ### Claim 8 (depends on 1) The cleaning device as claimed in claim 1, characterized in that, in the case of one bearing (2) of the clean-cloth spindle (4), the inner bearing part has a bearing bolt (6) which is mounted rotatably in the bearing bush (14) and which has an end portion (10), designed as an insertable coupling part, for the rotationally fixed coupling (44) of a spindle end, in that the bearing bush (14) and the bearing bolt (6) each have at least one end face (28, 30) which are braced resiliently against one another by at least one spring (32) clamped axially with prestress between the bearing bush and the bearing bolt and which thereby generate between themselves a rotational frictional resistance which has to be overcome for the rotation of the bearing bolt relative to the bearing bush, in that, in the case of the other bearing (60) of the clean-cloth spindle (4), the inner bearing part has a bearing bolt (62) which is mounted rotatably in the bearing bush (64) and which has an end portion, designed as an insertable part, for forming an insertion connection with the spindle end to be carried by it, in that between the bearing bolt (62) and the bearing bush (64) is clamped axially with prestress a spring (74) which urges the bearing bolt (62) inward, in the direction of the spindle end to be carried by it, against a stop (80) which is provided on the bearing bush (64), and in that the bearing bolt (62) has a grip part (86) which projects outward from the bearing bush (64) and at which the bearing bolt (62) can be gripped in order to draw it axially outward relative to the bearing bush and at the same time draw it off from the spindle end. ### Claim 9 The cleaning device as claimed in one of the preceding claims, characterized in that it is a structural unit which can be moved back and forth in a holding device (108), relative to the printing machine cylinder (97) to be cleaned, between a basic position, in which said structural unit is at a predetermined distance from the printing machine cylinder, and the cleaning position, in which a cloth portion (95) comes to bear against the printing machine cylinder to be cleaned. ### Claim 10 The cleaning device as claimed in one of the preceding claims, characterized in that the bearing bush (14, 64, 114, 164) has an annular collar (22, 115) for coming to bear against and therefore for positioning at a side face of the side part (20, 70), the bearing bush being screwed into said side face. ### Claim 11 A bearing for a cleaning device for printing machine cylinders as claimed in one of the preceding claims, characterized in that it is designed according to one of the preceding claims.