EP2041337A1 - Clamping device for printing cylinder - Google Patents
Clamping device for printing cylinderInfo
- Publication number
- EP2041337A1 EP2041337A1 EP07786162A EP07786162A EP2041337A1 EP 2041337 A1 EP2041337 A1 EP 2041337A1 EP 07786162 A EP07786162 A EP 07786162A EP 07786162 A EP07786162 A EP 07786162A EP 2041337 A1 EP2041337 A1 EP 2041337A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact element
- clamping device
- printing cylinder
- clamping
- carrier
- Prior art date
- 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
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/04—Tubes; Rings; Hollow bodies
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/06—Suspending or supporting devices for articles to be coated
Definitions
- the invention relates to a clamping device according to the preamble of patent claim 1.
- FIG. 1 shows a hollow cone described in EP 0 596 399 A1, which serves as a holder 1 and is installed in a galvanic plant in the manner described in EP 0 596 399 A1.
- the holder 1 is shown in Fig. 1 a) in section, in Fig. 1 b) in the front view and in Fig. 1 c) in perspective view.
- a dashed axis end 2 of a printing cylinder is drawn in.
- Fig. 1 a) is clearly visible that the current can be transmitted from the holder 1 exclusively via an edge 3 of an end face of the axle end 2, because only there is a contact.
- the high current required for galvanic processing is then transmitted via the hollow cones (holder 1) and the edges 3 touching them at the end faces of the axle ends 2 into the printing cylinder.
- a final diameter of about 100 mm and a substantially uniform distribution of the current across the left and right axle 2 it is possible to introduce up to about 14,000 A in the printing cylinder.
- the invention has for its object to provide a clamping device for a printing cylinder, with which an improved contact between the axis end of the printing cylinder and the associated holder can be achieved to transmit higher amounts of electricity
- An inventive clamping device for a printing cylinder with two arranged on a common axis holders wherein the holders each have a recess for receiving one end of the printing cylinder and are arranged with their recesses directed towards each other and are deliverable to each other and at least one of the recesses has a contact surface in which the associated end of the printing cylinder is held during clamping, is characterized in that at least one of the holder has a support and a contact element fixed on the carrier, that the contact surface is formed on the contact element, and that the contact element consists of a material
- the material of the contact element may in particular be copper or a copper-containing alloy, such as brass, bronze or hard copper, while the material of the support made of steel l exists
- the z B a hollow cone forming contact element is made entirely of copper and thus form a solid copper part It is accepted that copper is considerably softer than steel and due to the surface pressure on the clamped edge Due to the at least microscopic deformation of the contact surface is achieved that the contact element fits snugly against the edge of the axle end, thus providing a better, surface contact.
- the high Stromleitfahtechnik of copper ensures a large amount of electricity, the Due to the good thermal conductivity of copper, the heat generated in the contact area between the contact element and the axis end, current, good heat dissipated well, so that burn-in is avoided
- the contact surface may form a conical or spherical segment-like inner contour, as known, for example, from EP 0 596 399 A1 or DE 1 01 21 937 A1.
- a clamping ring for clamping the contact element on the support
- the copper contact element can be through the clamping ring, which is similar to a capstan or nut ges- In this way, the contact element can be held on the carrier solely by the clamping effect of the clamping ring.
- An additional fastening of the con- tact element, eg by means of screws, is not necessary, but nevertheless possible
- the entire contact element can be easily replaced.
- the steel support remains on the clamping device.
- a new contact element can then be re-attached to the carrier with the aid of the clamping ring.
- the contact surface could also be turned off to remove furrows, burrs or damage
- the existing copper contact element is kept flat by the steel clamping ring on the steel support, so that in the area of attachment no excessive local surface pressure occurs Due to the clamping ring, it is not required, screws or other fasteners ungsimplantation attack directly on the copper contact element Allow a reliable fastening of the contact element is possible without local damage - eg by screw heads when tightening a screw - can occur
- Fi g. 2 shows a holder according to the invention in front view (a)
- Fig. 3 is a Thomasdarstel development of a portion of a bearing bridge with the inventive holder Fig. 2 shows a holder 11 according to the invention, which can be attached to a later to be described in connection with FIG. 3 bearing bridge.
- the holder 11 corresponds in terms of its operation substantially to the above described with reference to the prior art in Fig. 1 described holder 1.
- the holder 11 is disposed opposite and arranged on a common axis, a second, not shown holder, so that the pressure cylinder with his two axle ends between the two holders 1 1 can be clamped.
- the holder 1 1 can be delivered to each other via the bearing bridge, so that the required clamping pressure can be generated.
- the holder 11 has a carrier 12 and a contact element 13, which is held by a clamping ring 14 on the carrier 12.
- the carrier 12 is screwed to the bearing bridge by means of screws 15.
- the clamping ring 14 is fastened with screws 16 to the carrier 12 and thereby clamps the contact element 13 against the carrier 12.
- the contact element 13 has a recess 17, which forms a contact surface 18 with a cone-shaped inner contour. In this way, the contact element 13 forms a hollow cone in the manner described in EP 0 596 399 A1.
- the carrier 12 is made of steel in a conventional manner.
- the contact element 13, however, is made of solid copper or a copper alloy. This ensures a high power transmission and a good heat dissipation. Due to the surface contact between the contact element 13 and the carrier 12 brought about by the clamping ring 14, it is ensured that the current introduced via the carrier 12 can be transmitted to the contact element 13 and thus to the printing cylinder.
- An axle end 19 of the printing cylinder is shown stylized by a dash-dot line.
- Fig. 2c shows a partial sectional view along the line CC in Fig. 2a).
- a centering pin 20 can be seen, with which the relative position between the contact element 13 and the carrier 12 is defined positively.
- Fig. 3 shows a section of a part of a bearing bridge to which the holder 1 1 according to the invention is screwed.
- the bearing bridge shown in FIG. 3 is associated coaxially opposite a second bearing bridge in the electroplating plant so that the pressure cylinder, not shown, can be axially clamped between the two bearing bridges.
- the holder 11 is screwed to a shaft 30 which is rotatably mounted at a bearing point 31 in a known, not shown manner. Opposite the holder 11 there is provided a current transfer region 32 in which water-cooled grinding carbons 33 introduce the galvanizing current into a slip ring 34, from where the current is transmitted via the shaft 30 and the holder 11 to the impression cylinder.
- the shaft 30 is fitted at the bearing point 31 into the actual bearing bridge, which ultimately holds the pressure cylinder or drives it in rotation.
- the shaft 30 is crossed by cooling channels 35 and 36 through which cooling water can be pumped. Through this cooling circuit and the front, the holder 1 1 supporting part of the shaft 30 is cooled. Since the contact element 13 has a particularly good thermal conductivity, it conducts the heat away from the contact surface 18 to the carrier 12, from where the heat is transferred to the shaft 30. From there, the heat can be dissipated reliably with the cooling circuit formed by the cooling channels 35, 36.
- Fig. 3 The structure shown in Fig. 3 is a part of a known bearing bridge, so that a further description is unnecessary.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006033449A DE102006033449B3 (en) | 2006-07-19 | 2006-07-19 | Clamping device for printing cylinders |
PCT/EP2007/006389 WO2008009439A1 (en) | 2006-07-19 | 2007-07-18 | Clamping device for printing cylinder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2041337A1 true EP2041337A1 (en) | 2009-04-01 |
EP2041337B1 EP2041337B1 (en) | 2010-07-14 |
Family
ID=38610699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07786162A Active EP2041337B1 (en) | 2006-07-19 | 2007-07-18 | Clamping device for printing cylinder |
Country Status (6)
Country | Link |
---|---|
US (1) | US8807030B2 (en) |
EP (1) | EP2041337B1 (en) |
JP (1) | JP4944956B2 (en) |
CN (1) | CN101490312B (en) |
DE (2) | DE102006033449B3 (en) |
WO (1) | WO2008009439A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102191533B (en) * | 2010-03-16 | 2013-06-05 | 东莞东运机械制造有限公司 | Novel full-automatic gravure electroplating clamping device |
US20130153410A1 (en) * | 2010-10-01 | 2013-06-20 | Tatsuo Shigeta | Apparatus for plating cylinder |
EP2813602A1 (en) * | 2013-06-14 | 2014-12-17 | ATOTECH Deutschland GmbH | Holding device for a substrate holder for vertical galvanic metal deposition on a substrate to be treated; and a substrate holder for being inserted in such a device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3150469C2 (en) * | 1981-12-19 | 1985-02-07 | Saueressig & Co, 4426 Vreden | Device for electroplating a rotary printing cylinder |
DE4236419C1 (en) * | 1992-10-28 | 1994-01-13 | Kaspar Walter Maschf Kg | Clamping device for gravure cylinders to be processed in a galvanic system |
JPH10110296A (en) * | 1996-10-08 | 1998-04-28 | Kogane Shoji Kk | Electrode part of plating device |
DE10121937C2 (en) * | 2001-05-05 | 2003-05-28 | Effing Gmbh Geb | Clamping device for printing cylinders |
DE102004033332A1 (en) * | 2004-07-09 | 2006-02-09 | Kaspar Walter Gmbh & Co. Kg | Clamping device for printing cylinders |
-
2006
- 2006-07-19 DE DE102006033449A patent/DE102006033449B3/en active Active
-
2007
- 2007-07-18 WO PCT/EP2007/006389 patent/WO2008009439A1/en active Application Filing
- 2007-07-18 US US12/309,457 patent/US8807030B2/en active Active
- 2007-07-18 JP JP2009519870A patent/JP4944956B2/en not_active Expired - Fee Related
- 2007-07-18 DE DE502007004410T patent/DE502007004410D1/en active Active
- 2007-07-18 EP EP07786162A patent/EP2041337B1/en active Active
- 2007-07-18 CN CN2007800269285A patent/CN101490312B/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2008009439A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102006033449B3 (en) | 2008-01-24 |
US8807030B2 (en) | 2014-08-19 |
JP4944956B2 (en) | 2012-06-06 |
EP2041337B1 (en) | 2010-07-14 |
CN101490312B (en) | 2010-10-27 |
JP2009543950A (en) | 2009-12-10 |
US20090314172A1 (en) | 2009-12-24 |
WO2008009439A1 (en) | 2008-01-24 |
DE502007004410D1 (en) | 2010-08-26 |
CN101490312A (en) | 2009-07-22 |
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