EP2845731A1 - Presseur - Google Patents

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Info

Publication number: EP2845731A1
Authority: EP; European Patent Office
Prior art keywords: shaft; cylinder; electrically conductive; sliding ring; ring
Prior art date: 2013-09-04
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP14002856.4A

Other languages

German (de)

English (en)

Other versions

EP2845731B1 (fr

Inventor

Hubertus Dettke

Christa Dettke

Christoph Dettke

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee

Individual

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2013-09-04

Filing date

2014-08-16

Publication date

2015-03-11

2014-08-16 Application filed by Individual filed Critical Individual

2015-03-11 Publication of EP2845731A1 publication Critical patent/EP2845731A1/fr

2016-01-13 Application granted granted Critical

2016-01-13 Publication of EP2845731B1 publication Critical patent/EP2845731B1/fr

Status Active legal-status Critical Current

2034-08-16 Anticipated expiration legal-status Critical

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Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/001—Heliostatic printing
- 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

Definitions

the invention relates to a impression roller of a rotary printing press.
the sheet-shaped or sheet-shaped printing material e.g., paper, cardboard, or plastic sheets
a pressure roller and a pressing roller Particularly high speeds are achieved in commercial printing.
the printing cylinder picks up ink from a paint pan in cells in its surface. The surplus is usually shaken off.
a more or less electrically conductive region of a cylindrical impression roller with a rubber-elastic outer layer is supplied with a high voltage.
the electrically conductive region is e.g. around a semiconductor layer deposited on the circumference of a solid or hollow cylindrical body.
an axleed impression roller having a limited conductive coating over a steel jacket.
the coating is the electrical charges on the axis, a ball bearing between the axis and steel jacket and the steel jacket supplied.
a impression roller with a shaft and a limited conductive coating on a steel jacket known.
the covering the electric charges are supplied via a arranged on the front side of the shaft ball bearing, the shaft and the steel shell.
the voltage supply via electrodes and brush grinding contacts is unreliable because of soiling and wear.
the supply of ball bearings can be affected by the wear of the bearings, which can be accelerated by the supply of voltage.
a pressure roller with a more reliable device for supplying an electrical voltage which has a rotor connected to the cylinder and concentric with the cylinder axis and a stator spaced from the rotor concentric with the cylinder axis and a cavity between rotor and stator.
a rotor electrode facing the cavity is connected to the electrically conductive region of the cylinder, and a stator electrode facing the cavity can be connected to an electrical power supply.
an electrically conductive fluid is arranged in the cavity.
Means for preventing leakage of the electrically conductive fluid from the cavity are present. According to one embodiment, this is a sealing element which laterally delimits the cavity between the stator and the rotor, which may be designed in particular as a simmer ring.
the DE 20 2007 002 726 U1 describes a further impression roller with a more reliable device for supplying an electrical voltage, comprising an electrically conductive contact element in a device for guiding and a spring element for pressing the electrically conductive contact element against the Scope of the shaft or axle identifies.
the contact element is a contact pin.
the means for supplying an electrical voltage comprises a stator, a rotor, a cavity between the stator and the rotor, in which the means for guiding with the contact element is arranged, an electrically conductive fluid in the cavity and means for preventing the outflow of the electrically conductive fluid from the cavity.
the electrical voltage is transmitted from the electrically conductive contact element to the shaft or from the axis to the electrically conductive contact element.
a voltage transfer between the stator and the rotor can be effected by the electrically conductive fluid. This is particularly advantageous when the electrically conductive contact element fails.
the electrically conductive contact element can transmit the electrical voltage when the voltage transmission is interrupted by the electrically conductive fluid.
the present invention seeks to provide a impression roller with a device for supplying an electrical voltage, which works reliably with little effort.
the electrical voltage is supplied via at least one means for supplying an electrical voltage having an electrically conductive, coaxial to the cylinder shaft or axis and at least one coaxial to the cylinder sliding ring of electrically conductive and flexible material on the shaft or Axis slidably seated. If the impression roller has a shaft, this is non-rotatably connected to the cylinder and electrically connected to the electrically conductive region of the cylinder.
the sliding ring is arranged stationary in this variant of the invention and connectable to an electrical power supply. The electrical voltage passes from the sliding ring on the rotating shaft and from the shaft to the electrically conductive material of the cylinder to form an electric field between impression roller and impression cylinder.
the sliding ring is non-rotatably connected to the cylinder and electrically connected to the electrically conductive area.
the stationary axis with the electrical power supply can be connected. Via the axis, the electrical voltage passes through the sliding ring rotating with the cylinder to the electrically conductive area on the circumference of the cylinder, so that the electric field is formed between impression roller and impression cylinder.
This voltage supply is particularly inexpensive and works very reliable.
the wear of the seal ring can be kept low because it can have a line contact or surface contact with the shaft or axis. If the sliding ring also serves as a seal for a fluid, its wear is also reduced by the lubricating effect of the fluid.
the sliding ring can be realized by means of inexpensive standard components.
the sliding ring can have self-adjusting properties, in particular if it consists of an elastic material. As a result, the sliding ring can compensate for wear.
the means for rotatably supporting the cylinder are preferably insulated from the cylinder or from a frame or frame made of metal, so that the charge does not flow from the cylinder to the mass.
the sliding ring sits on the periphery and / or the end face of the shaft or axis.
it can press in the radial direction against the circumference of the shaft or axis or press in the axial direction against the end face of the shaft or axis.
the chosen construction can be made dependent on the structural conditions of the impression roller to be equipped with the device for supplying an electrical voltage.
the slip ring may be a complete circumferential ring or consist of one or more ring segments. When executed from one or more segments, it may also be referred to as a "segment ring”.
the shaft or axle according to one embodiment is made of steel or another metal.
the shaft or axle is polished at least in the region on which the sliding ring rests.
the device for supplying an electrical voltage can be designed such that it contacts the shaft or axis solely via at least one sliding ring.
the means for supplying an electrical voltage comprises a stator or rotor arranged concentrically with the cylinder axis at a distance from the shaft or axis, a cavity between the shaft and the stator or the axis and the rotor, an electrically conductive fluid into the cavity and the at least one sliding ring seals the cavity on at least one side.
This embodiment comprises a device for supplying an electrical voltage to a fluid transmission system, as for example in the DE 20 2005 016 974 U1 or the EP 1 780 011 A1 is described.
the electrically conductive fluid is for example an oil or fat.
a suitable electrically conductive roller bearing grease is offered, for example, by Klüber Lubrication Kunststoff KG, Geisenhauerstrasse 7, 8379 Kunststoff, Germany, under the trade name Klüberlektrik B42-72.
the slip ring ensures the supply of electrical voltage, if the transmission by means of the electrically conductive fluid is ineffective, for example, because the fluid has leaked out of the cavity.
the stator is preferably circular-cylindrical, if the voltage is transmitted via the electrically conductive fluid to the circumference of the shaft.
the rotor is preferably circular cylindrical when the voltage is transmitted to the circumference of the axis.
the cavity between the stator and the rotor is preferably sealed by sliding rings at both ends of the cavity. If the voltage is transmitted to a circular disk-shaped end face of the shaft, the stator is preferably likewise circular disk-shaped. If the voltage is transmitted to a circular disk-shaped end face of the axle, so also the rotor is preferably designed circular disk-shaped.
the cavity between shaft or axle and stator or rotor may be sealed externally by a single slip ring.
a plurality of sliding rings can also be arranged directly next to one another in order to seal the cavity on one side several times, to ensure the supply of the electrical voltage in order to reduce the contact resistance.
the sliding ring is a Simmerring of electrically conductive and flexible material.
Simmerrings with the aforementioned properties are available. They are formed for example of Teflon or other plastic with graphite, carbon fiber or soot deposits. Suitable Simmerringe are for example offered by the company ... under the trade name ....
the sliding ring is a stuffing box ring made of an electrically conductive and flexible material.
Stuffing box rings with the mentioned properties are available. These are, for example, stuffing box rings of Teflon or another plastic with deposits of graphite, carbon fibers or carbon black.
the sliding ring consists of an elastic material, so that it has self-adjusting properties.
a stuffing box ring readjustment can also be effected by a spring element which permanently presses the stuffing box ring against the shaft or axle. Accordingly, an adjustment by a spring element can be effected even with a Simmerring.
the shaft on which the sliding ring is seated, supports the impression roller in a stationary pivot bearing.
the shaft for supporting the impression roller is then used at the same time as a contact element for the sliding ring.
the pivot bearing is arranged according to an embodiment in a frame or frame electrically isolated.
the shaft on which the sliding ring is seated a non-rotatably connected to the end face of the cylinder shaft which is arranged concentrically to a shaft or axis for supporting the cylinder.
This arrangement can be selected in a press roller with a shaft for supporting the impression roller, if for structural reasons, the slide ring can not be placed on the shaft for supporting the impression roller.
the shaft rotatably connected to the end face of the cylinder can be provided when the impression roller is mounted on an axle.
pivot bearings are arranged between cylinder and axle.
the pivot bearing relative to the axis or the axis with respect to a frame or frame for storing the impression are insulated so that the charge does not flow from the cylinder to ground.
the sliding ring is embedded on the circumference in a retaining ring or clamped between a stop on one side and a mounting ring on the other side or between the mounting ring on both sides.
the sliding ring can be fixed with a defined preload.
a plurality of juxtaposed seal rings sitting on the shaft or axis are provided.
the shaft, on which the sliding ring is seated is hollow cylindrical.
This embodiment can be selected, for example, when a shaft rotatably connected to the end face of the cylinder is arranged concentrically to a shaft or axis for supporting the cylinder.
a rotary feedthrough for compressed air can be extended through the hollow cylindrical shaft.
the hollow cylindrical shaft can be arranged on the end face of a shaft for supporting the cylinder. The rotary feedthrough in a sleeve system is used to inflate the sheath of the impression roller by means of compressed air in order to exchange it for another sheath.
matching or essentially matching components are designated by the same reference numerals, differences being characterized by a following point and different numbers behind the point.
Fig. 1 has a impression roller 1.1 a cylinder 2, which has a metallic cylinder core 3 and a rubber-elastic, electrically semiconducting layer 4 on the outer circumference.
the layer 4 consists for example of rubber with embedded carbon black, carbon fiber or graphite particles.
the impression roller 1 has a fixed to the cylinder core 3 shaft 5 made of steel, which is mounted on both sides in pivot bearings in the form of radial ball bearings 6.
the ball bearings 6 are supported on the one hand on a radial shoulder of the shaft 5 and on the other hand secured to a snap ring inserted into a groove of the shaft against axial displacement.
the ball bearings 6 are mounted outside in bearing shells 7 of electrically insulating material and the bearing shells 7 in a bearing shell support 8, which is connected to a machine frame, not shown.
the bearing shells 7 have a flange 7.1 at one end of a cylindrical section 7.2.
the circumference of the shaft 5 is associated with a device for supplying an electrical voltage 9.1.
This has an inside circular cylindrical stator 10 which is fixed on the side of the cylinder core 3 by means not shown screws on the bearing shell carrier 8.
the stator 10 has two circular-cylindrical sections 10.1, 10.2, between which a diameter jump 10.3 is present.
the section 10.2 has a larger diameter than the section 10.1 and in between a diameter jump 10.3 is present.
a Simmerring 12 of electrically conductive material which is seated inside the circumference of the shaft 5, an electrically conductive ring 13, e.g. made of metal, which has a small distance from the shaft, and another Simmerring 14 of electrically conductive material, which rests on the inside of the circumference of the shaft 5, arranged.
This arrangement is supported on the other side on a coaxial to the shaft 5, circular cylindrical support portion 15.1 on the side of a support plate 15.2, which is supported on the other side on the pivot bearing 6.
a cavity 16 is present, which is filled with an electrically conductive grease.
the stator 10 has a radial insertion hole 17 for an electrical connector 18 of an electrical power supply.
the further bearing shell 11 and the ring 13 thus have aligned insertion holes 19, 20.
the insertion holes 19, 20 of the further bearing shell 11 and the ring 13 are dimensioned so that an end-side pin 21 of the connector 18 is clamped inserted.
the pin 21 can be equipped for good contact with resilient segments.
an electrical voltage is supplied to the ring 13 of electrically conductive material via the connector 18. From the ring 13, the voltage passes through the Simmerringe 12, 14 and the electrically conductive grease to the circumference of the shaft 5. By the shaft 5, the voltage on the cylinder core 3 is forwarded to the layer 4 of the impression roller 1.1.
Fig. 2 differs from the above-described in that the means for supplying an electrical voltage 9.2 only has a Simmerring 14.
the applied by means of the connector 18 to the ring 13 voltage of a power supply is transmitted through the electrically conductive Simmerring 14 on the circumference of the shaft 5 and from there via the cylinder core 3 on the outer layer 4 of the impression 1.2.
This embodiment has no cavity with an electrically conductive fluid.
the impression roller 1.3 of Fig. 3 differs from the above-described characterized in that the means for supplying an electrical voltage 9.3 three juxtaposed Simmerringe 14.1, 14.2, 14.3 made of electrically conductive material. Between adjacent Simmerrings 14.1, 14.2, 14.3 spacer rings 22.1, 22.2 are arranged. The spacers 22.1, 22.2 are also made of metal or other electrically conductive material.
the shaft 5 of a impression roller 1.4 is mounted in radial ball bearings 6, which are supported via an insulating bearing shell 7 in a machine frame, not shown.
the shaft 5 has a central Tapped hole 24 for supplying compressed air for the purpose of replacing a sleeve sleeve on the casing of the impression roller 1.4.
a rotary feedthrough 25 for supplying compressed air is screwed into the threaded bore 24 in the end face of the shaft 5.
a rotor 26 is screwed with a hollow cylindrical portion 26.1 and a flange 26.2 at one end by means of screws 27 to the end face of the shaft 5.
the rotor 26 is made of an electrically conductive material, in particular of steel.
the hollow cylindrical section 26. 1 of the rotor 26 is surrounded by a substantially circular cylindrical stator 10.
the stator 10 is made of an electrically insulating material. It is fixed by screws 27 on a machine frame fixed mounting plate.
a metallic ring 13 is used, which is fixed on the inner circumference of the stator 10 by means not shown.
the stator 10 and the ring 13 have aligned insertion holes 17, 20 into which a connector 18 is inserted with a contact pin 21.
the Simmerring 14 is clamped from electrically conductive material.
the Simmerring 14 has a rigid, L-shaped base 29.1, wherein on the leg perpendicular to the shaft of the base an elastically deformable portion 29.2 of the Simmerringes 14 is fixed in acute-angled alignment with this leg.
the cavity 16 between the ring 13 and the Simmerring 14 may also be filled with an electrically conductive fluid.
a supplied by a connector 18 from a high voltage supply voltage is introduced into the metallic ring 13 and passes through the Simmerring 14 and optionally the electrically conductive fluid on the mantle of the cylindrical portion 26.1 of the rotor 26th
the voltage passes through the shaft 5 and the cylinder core to the jacket of the impression roller 1.4.
the impressioner 1.5 of Fig. 5 differs from the above-described characterized in that on the inner circumference of the stator 10 on the two sides of the ring 13 each have a Simmerring 29 is arranged made of electrically conductive material.
the additional Simmerring 29 is supported on the one hand on the flange of the stator 10 and on the other hand on the ring 13 from.

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Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Rolls And Other Rotary Bodies (AREA)

EP14002856.4A 2013-09-04 2014-08-16 Presseur Active EP2845731B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE201320007840 DE202013007840U1 (de)	2013-09-04	2013-09-04	Presseur

Publications (2)

Publication Number	Publication Date
EP2845731A1 true EP2845731A1 (fr)	2015-03-11
EP2845731B1 EP2845731B1 (fr)	2016-01-13

Family

ID=50383517

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP14002856.4A Active EP2845731B1 (fr)	2013-09-04	2014-08-16	Presseur

Country Status (2)

Country	Link
EP (1)	EP2845731B1 (fr)
DE (1)	DE202013007840U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN118636568B (zh) *	2024-08-15	2025-02-11	响水诚双纺织有限公司	一种滚筒印花装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0556463B1 (fr)	1992-02-18	1997-04-09	Eltex-Elektrostatik Gesellschaft mbH	Rouleau d'impression
DE20319870U1 (de) *	2003-12-22	2005-05-04	Dettke, Christa	Presseur
DE202005016974U1 (de)	2005-10-25	2006-01-05	Dettke, Christa	Presseur
DE202007002726U1 (de)	2007-02-26	2008-07-03	Dettke, Christa	Presseur
DE202010003517U1 (de) *	2010-03-02	2011-07-12	Christa Dettke	Presseur

2013
- 2013-09-04 DE DE201320007840 patent/DE202013007840U1/de not_active Expired - Lifetime
2014
- 2014-08-16 EP EP14002856.4A patent/EP2845731B1/fr active Active

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0556463B1 (fr)	1992-02-18	1997-04-09	Eltex-Elektrostatik Gesellschaft mbH	Rouleau d'impression
DE20319870U1 (de) *	2003-12-22	2005-05-04	Dettke, Christa	Presseur
DE202005016974U1 (de)	2005-10-25	2006-01-05	Dettke, Christa	Presseur
EP1780011A2 (fr)	2005-10-25	2007-05-02	Christa Dettke	Rouleau d'impression
DE202007002726U1 (de)	2007-02-26	2008-07-03	Dettke, Christa	Presseur
DE202010003517U1 (de) *	2010-03-02	2011-07-12	Christa Dettke	Presseur

Also Published As

Publication number	Publication date
EP2845731B1 (fr)	2016-01-13
DE202013007840U1 (de)	2014-03-10

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