Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
  • B41F13/18—Impression cylinders
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
  • B41F13/18—Impression cylinders
  • B41F13/187—Impression cylinders for rotogravure
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
  • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets

Definitions

• the invention relates to cylinders for web-shaped material processing machines according to the preamble of claim 1 or 3.
• a cylinder for web-shaped material processing machines comprising a rotatably mounted spindle and a tubular jacket which is rotatably mounted on the spindle.
• the jacket of the impression roller is made of steel, for example, and carries a sleeve (also called sleeve) made of rubber-like material.
• a sleeve also called sleeve
• the cylinder described in this document uses a heat exchanger that is integrated with the cylinder.
• a cylinder in which a lubricant and cooling circuit is formed.
• fluid flow is created within the cylinder, particularly in the space between a stationary support and the tubular jacket.
• the sealing of the flow area continues to cause difficulties at high rotational speeds and in the case of an optionally desired bending of the cylinder.
• this design does not provide a solution to the way in which changing the applied to the shell of the cylinder sleeve can be facilitated or supported.
• the conventional use of a sliding layer produced by compressed air is ruled out because the intended lubricant circuit no longer allows the outflow of compressed air through the jacket of the cylinder.
• the invention has for its object to provide cylinders for web-like material processing machines.
• the two sealing rings may consist of different materials and have different shapes, whereby they can be optimally adapted to the respective medium contained in the space to be sealed. It is particularly advantageous if the compressed gas space can be supplied with compressed gas, in particular compressed air, via a compressed gas bore extending at least partially in the axis. At the front-side mouth of the pressure gas bore in the axis can be connected in this case, particularly simple, a compressed gas supply line. Starting from the compressed gas bore, several supply bores can be led to the compressed gas space.
• the lubricant for efficient lubrication of the bearings and simultaneous cooling of the cylinder jacket, it is advantageous if the lubricant, for.
• As oil during the rotation of the shell is caused to a targeted flow.
• the heat generated by the flexing work can be dissipated quickly from the inside of the jacket.
• the flow can preferably pass through the individual bearings, which are arranged between the axis and the jacket, in order to ensure optimum lubrication conditions there. Since the individual bearings hinder a running in the axial direction of free lubricant flow, the lubricant must be specifically accelerated in the axial direction and returned to the home page after passing through such a camp.
• an inclined oil deflector is preferably arranged in the vicinity of the inner surface of the shell. Upon rotation of the shell, this first oil deflector peels off the oil adhering to the inner surface of the shell and accelerates it in the axial direction. It is also advantageous if a second ⁇ labweiser is provided, which redirects the flowing in the axial direction of lubricant flow substantially in a radial direction, on the one hand to close the lubricant circuit and after on the other hand to minimize the oil pressure acting on the lubricant side seal.
• the second oil deflector is preferably arranged in the immediate vicinity of the lubricant-side sealing ring.
• Fig. 1 is a sectional overview of a cylinder according to the invention, wherein only individual portions of the cylinder are drawn;
• FIG. 2 is a detailed sectional view of two sections of the cylinder, wherein the selected cutting plane also runs parallel to the axis but perpendicular to the cutting plane used in FIG. 1;
• FIG. 3 shows a variant according to FIG. 2.
• a pressure roller or cylinder comprises an integrally formed or also multi-part axle 01, which is mounted with one end in a fixed bearing and with the other end in a floating bearing (not shown).
• the printing press is preferably a gravure printing machine in which the impression roller acts as an impression cylinder of a forme cylinder for printing on a printing material.
• the cylinder, in particular a sleeve of the cylinder can have one or more pressure forms
• the second main component of the cylinder is a tubular jacket 02 which is rotatably mounted on the axis 01.
• the bearing of the shell 02 are several bearings 03, which are preferably designed as a ball bearing o. ⁇ . Rolling.
• a pressure gas bore 04 extends starting from the fixed bearing side (in the figure on the left) of the axis 01.
• the pressure gas bore 04 extends up to preferably a plurality of supply bores 05, which extend essentially radially through the axis 01 and open into a compressed gas space 06 .
• the compressed gas chamber 06 communicates with a plurality of outlet openings 07, which are distributed on the circumference of the shell 02.
• a lubricant chamber 08 is provided for the lubrication of the bearings 03 and the rotatable shell 02, which extends in the axial direction in sections between the axis 01 and the inner wall of the shell 02.
• a suitable lubricant especially oil.
• the two sealing rings 09; 10 are for example arranged immediately adjacent to each other and preferably each consist of a material which is adapted to the medium contained in the adjacent space (oil or compressed air).
• the sealing rings 09; 10 are also located as close as possible to one of the bearings 03, on which the shell 02 is supported. The resulting from the possible bending of the Presseurmantels mechanical loads on the sealing rings 09; 10 can be kept small.
• the sealing edges of the sealing rings 09; 10 are each facing the adjacent lubricant 08 or compressed gas chamber 06, as illustrated by the arrows.
• a grease chamber for lubricating the compressed-gas-side sealing ring is formed between the lubricant-side sealing ring 09 and the pressure-gas-side sealing ring 10 by means of an intermediate ring.
• a directed lubricant flow is formed as the shell 02 rotates as follows: At rest, the lubricating oil sammn collects at the lower part 8a of the lubricant space 08. When the shell 02 rotates, an oil layer forms on the inside surface of the lubricant Sheath 02, which has a certain thickness depending on the rotational speed and viscosity of the oil.
• a first oil deflector 11 is provided, which partially peels off the oil layer adhering to the inner surface of the casing 02.
• the first oil deflector 11 is slightly inclined to accelerate the peeled oil in the axial direction of the cylinder.
• the resulting lubricant flow is shown by a dashed line in FIG. Since the first oil deflector 11 is in the vicinity of the bearing 03, the lubricant flow is passed through the bearing 03. In the flow direction behind the bearing 03 in turn forms a radial oil layer the inner surface of the shell 02 from.
• a second oil deflector 12 is provided, which peels off the lubricating oil from the inner surface of the casing 02 and directs it in the direction of the axis 01.
• the lubricant circuit is closed in the illustrated embodiment by a lubricant channel 13 which extends obliquely to the axial direction of the cylinder through the axis 01.
• a lubricant channel 13 which extends obliquely to the axial direction of the cylinder through the axis 01.
• the lubricant channel 13 extends through the axis 01 and there intersects the pressure gas bore 04, a seal between the lubricant channel 13 and the pressure gas bore 04 must take place. This is done, for example, by a pipe 14 is inserted into a corresponding bore in the axis 01. However, it would also be conceivable that the lubricant channel 13 extends radially offset to the compressed gas bore, € 4 and in this way an intersection of these two cavities is avoided.
• ⁇ lbe alternahrung 16 To seal the lubricant chamber 08 to the outside more sealing elements 15 are provided in the end regions of the cylinder.
• an externally accessible ⁇ lbe spallbohrung 16 is present, which runs for example through the axis 01 and in the case of an intersection with the pressure gas bore 04 must also be sealed by a pipe 14.
• the ⁇ lbe spallbohrung 16 extends from an oil filling 17 into the lubricant space 08.
• the ⁇ lbe spallbohrung 16 can be used simultaneously for the venting of the lubricant space 08.
• a Dipstick (not shown) are used, with which the oil level can be controlled.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rolling Contact Bearings (AREA)
• General Details Of Gearings (AREA)
• Rolls And Other Rotary Bodies (AREA)
• Disintegrating Or Milling (AREA)
• Replacement Of Web Rolls (AREA)
• Sliding-Contact Bearings (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=34969945

Family Applications (1)

Country Status (6)

Families Citing this family (4)

Family Cites Families (13)

• 2004
  • 2004-06-25 DE DE102004030702A patent/DE102004030702B3/de not_active Expired - Fee Related
• 2005
  • 2005-06-03 EP EP05752566A patent/EP1758739B1/fr not_active Not-in-force
  • 2005-06-03 CN CNB2005800012031A patent/CN100491124C/zh not_active Expired - Fee Related
  • 2005-06-03 AT AT05752566T patent/ATE482824T1/de active
  • 2005-06-03 DE DE502005010309T patent/DE502005010309D1/de active Active
  • 2005-06-03 WO PCT/EP2005/052557 patent/WO2006000516A1/fr active Application Filing
  • 2005-06-03 US US11/630,675 patent/US20080254960A1/en not_active Abandoned

Non-Patent Citations (1)

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