EP1279498A2 - Sécheur pour produits imprimés - Google Patents

Sécheur pour produits imprimés Download PDF

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Publication number
EP1279498A2
EP1279498A2 EP02010997A EP02010997A EP1279498A2 EP 1279498 A2 EP1279498 A2 EP 1279498A2 EP 02010997 A EP02010997 A EP 02010997A EP 02010997 A EP02010997 A EP 02010997A EP 1279498 A2 EP1279498 A2 EP 1279498A2
Authority
EP
European Patent Office
Prior art keywords
air
dryer according
dryer
drying
directional air
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.)
Withdrawn
Application number
EP02010997A
Other languages
German (de)
English (en)
Other versions
EP1279498A3 (fr
Inventor
Hans G. Platsch
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.)
Platsch GmbH and Co KG
Original Assignee
Platsch GmbH and Co KG
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.)
Filing date
Publication date
Application filed by Platsch GmbH and Co KG filed Critical Platsch GmbH and Co KG
Publication of EP1279498A2 publication Critical patent/EP1279498A2/fr
Publication of EP1279498A3 publication Critical patent/EP1279498A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B41F23/0443—Drying sheets, e.g. between two printing stations after printing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection

Definitions

  • the invention relates to a dryer for printed products according to the preamble of claim 1.
  • Such a dryer is described in DE 196 51 301 A1.
  • This dryer uses dry air to dry the printed products.
  • the dry air flow can lead to undesired beating of the printed products in conveyor sections in which the printed products are conveyed in a free-floating manner, in particular after they have run down from a deflection drum at the outlet of a printing press.
  • a similar effect can also be obtained on radiation dryers by simply running the pressure product down from the deflection drum, which forms a physical guide element.
  • the directional air flow ensures that the printed products are conveyed on a controlled path.
  • the directional air flow for example, corrugations located in the printed products from the printed products out backwards.
  • a dryer according to claim 3 is inexpensive in Production.
  • the modular structure of the essentially identical drying elements enables various drying elements (compressed air drying elements, infrared drying elements and UV drying elements) to be combined as required in the dryer.
  • a directional air generator according to claim 4 has proven to be particularly efficient with regard to the controlled guidance of the printed products.
  • the part of the directional air generator generating the directional air flow can be arranged near the guide element, so that the printed products travel only a short distance after the guide element until they come under the influence of the directional air flow.
  • the arrangement of a drying element according to claim 7 ensures that a good residual drying of the printed products is achieved at the exit of the dryer.
  • both the directional air flow and the drying air serving for drying can be provided with the same air source.
  • Heating devices according to claim 11 allow the generation of warm or hot dry air in the immediate vicinity of the application with compact dimensions of the dryer strips and thus also of the entire dryer.
  • An air baffle according to claim 12 gives the desired flow direction of the directional air flow in a mechanically particularly simple manner.
  • a directional air flow is obtained which extends substantially uniformly over the entire width of the dryer.
  • 10 denotes a total of a dryer unit which is intended for drying printing inks and / or printing varnishes in a multicolor printing machine (for intermediate drying or final drying).
  • the conveying path of the printed products is indicated by an arrow 12 in FIGS. 2 and 4.
  • a dryer of the printing press can be constructed from a plurality of dryer units 10 arranged in succession along the conveying path 12 of the printed products.
  • the dryer unit 10 has a plurality of parallel transverse dryer strips 14 to be described, which are carried by a frame designated overall by 16. This has one on the left in FIGS. 1 and 2 located side hollow frame part 18 and a side frame part 20 located on the right in FIGS. 1 and 2, which is also hollow and forms an air distribution duct. Outer frame parts 22, 24 parallel to the dryer strips 14 connect the frame parts 18, 20 to form a fixed frame 16.
  • An end wall plate 26 of the right side frame part 20 has an opening which creates a connection between an air connection part 28 and the air distribution channel of the side frame part 20.
  • the connecting part 28 comprises an axial connection opening and an angled connection opening pointing downwards when the dryer unit 10 is installed, one of which is closed (according to the respective operating conditions) by a blind plate 30, while the other carries a connection piece 32.
  • the dryer strips 14 each have a strip structure 34 of the same structure, which has both a flow and a supporting function.
  • the strip main body 34 is obtained by cutting an extruded continuous profile made of aluminum or an aluminum alloy.
  • the endless profile has a central air duct 36.
  • An electrical heating cartridge 37 is attached in the air duct 36.
  • the heating cartridge 37 has, in the usual way, an insulating body with a star-shaped cross section, over the wings of which resistance wires are wound.
  • a first strip variant 14 ' has the structure described above.
  • dryer strips 14 'and 14' ' can be provided in succession in any number and type.
  • the user can also vary the dryer structure for special print jobs by replacing dryer strips 14 'with dryer strips 14' 'or vice versa, since these dryer strips have the same outer geometry and are provided with standard connections.
  • a dryer bar 14 '''generating a directional air flow 70 is generally always set up at the inlet of the dryer 10, since there is the problem of the striking of printed sheets 58 drawn by grippers 62 when they run down from a deflection cylinder 60 of the printing press (see FIG. 4 ) is the strongest.
  • a dryer bar 14 '' 'can also be provided there, as was described above.
  • the directional airflow need not be a warm airflow.
  • the second strip variant 14 ′′ which is arranged in the dryer unit 10 according to FIG. 3 at the far left position and at the second position from the right, between the positioning ribs 44 there are two holding blocks 46 screwed to the strip main body 34 at the two ends of the strip main body 34 Admission. These hold a rod-shaped IR heater 48 via holding springs, which is attached to the side of the dryer bar 14 ′′ facing the printed products when the dryer unit 10 is installed.
  • an air baffle 50 is attached to the left channel rib 38.
  • screws 52 which are passed through bores in a fastening section 54 of the air baffle 50 and are screwed into corresponding duct bores in the duct rib 38.
  • a fastening section 54 sealing the dry air channels 42 in the channel rib 38 initially runs parallel to the lower boundary surface of the last main body 34 and then kinks away from the last main body 34 at an obtuse angle, so that a 45 ° (angle ⁇ ) to the lower boundary surface of the last main body 34 angled guide section 56 is formed below the outlet openings of the channel rib 40 which are spaced apart in the transverse direction.
  • FIG. 4 illustrates the arrangement of the dryer unit 10 within a printing press shown in detail in FIG. Of this, a last pressure cylinder is indicated at 59. The latter transfers the printed sheets 58 to the deflection cylinder 60 on the outlet side. The printed sheets 58 are moved using grippers 62 which are moved along the desired conveying path by chains and chain guides (not shown), from which the section with the reference number 12 running under the dryer 10 is provided.
  • the deflecting cylinders 60 and the path of the grippers 62 hereby specify a target conveying surface which coincides with the path of the latter when the printing sheet 58 is conveyed ideally, that is to say without fluttering and waves.
  • the printing sheet 58 moves in the vicinity of the deflection cylinder 60 along a sheet guide plate 64 fastened to a frame of the printing press. A leading section of the printing sheet 58 is clamped between a gripping bar 66 and a counter surface 68 of the grippers 62.
  • the function of the dryer unit 10 is as follows:
  • the printing sheets 58 are guided along the conveying path 12 by the gripping devices 62 guided on chains, not shown.
  • the printed sheets 58 leave the outer surface of the deflecting cylinders 60, they are guided past the dryer unit 10 along the conveying path 12 with the grippers 62.
  • the dryer strips 14 ', 14''and14''' are from one Air source not shown in the drawing is supplied with air via a distributor line. This passes through the respective connection piece 32 into the air channels 36 of the dryer strips and from there into the dry air channels 40 and 42. There, the dry air is heated by the heating cartridges 37. The heated dry air reaches the surface of the printed sheet to be dried in the direction perpendicular to the conveying plane of the printed sheet 58.
  • the printing ink carried by the printing sheets is additionally dried by IR radiation or, when the radiant heater 48 is replaced by UV radiators, by UV radiation.
  • the dry air emerging from the dry air channels 40 and 42 also serves to cool the radiant heaters 48.
  • the directional air flow is generated after exiting the air ducts 42 of the duct ribs 40 of the dryer strip 14 ′′ ′′ by deflection at the guide section 56 of the air guide plate 50.
  • the main flow direction 70 is inclined by 45 ° (angle ⁇ ) to the horizontal and counter to the conveying direction 12, corresponding to the angled guide section 56, and meets the printing sheet 58 after it has left the deflection cylinder 60.
  • the directional air flow prevents the printed sheet 58 from moving upward in this section of the conveying path and lifting it off strongly from the sheet guide plate 64 (hitting or fluttering of the printed sheet).
  • the printed sheet 58 which is moved by a gripper, therefore always remains essentially in the area of the desired conveying surface parallel to the sheet guide plate 64 and cannot strike or graze on machine parts, as a result of which the still wet printed image would be smeared.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Drying Of Solid Materials (AREA)
EP02010997A 2001-07-26 2002-05-17 Sécheur pour produits imprimés Withdrawn EP1279498A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10136396 2001-07-26
DE2001136396 DE10136396A1 (de) 2001-07-26 2001-07-26 Trockner für Druckerzeugnisse

Publications (2)

Publication Number Publication Date
EP1279498A2 true EP1279498A2 (fr) 2003-01-29
EP1279498A3 EP1279498A3 (fr) 2005-06-15

Family

ID=7693153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02010997A Withdrawn EP1279498A3 (fr) 2001-07-26 2002-05-17 Sécheur pour produits imprimés

Country Status (2)

Country Link
EP (1) EP1279498A3 (fr)
DE (1) DE10136396A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006045442A1 (fr) * 2004-10-25 2006-05-04 Windmöller & Hölscher Kg Unite de ventilation dans un sechoir pour une imprimante
EP1847388A2 (fr) * 2006-04-21 2007-10-24 Platsch GmbH & Co. KG Unité de séchage et séchoir doté d'une multitude de telles unités

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19651301A1 (de) 1996-12-10 1998-06-18 Hans G Platsch Trocknereinheit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1558831A (en) * 1924-04-14 1925-10-27 George W Brunner Static-electricity remover and drier for printing presses
DE2547902C3 (de) * 1975-10-25 1979-09-13 Albert-Frankenthal Ag, 6710 Frankenthal Trockungskasten für bedruckte Bogen
DE9405223U1 (de) * 1994-03-28 1994-06-09 Man Roland Druckmaschinen Ag, 63069 Offenbach Trocknervorrichtung für eine Bogenrotationsdruckmaschine
DE19516053C2 (de) * 1995-05-04 2000-08-24 Ist Metz Gmbh UV-Strahler
DE19701084A1 (de) * 1997-01-15 1998-07-16 Hans Georg Platsch Trocknereinheit
DE19829383A1 (de) * 1998-07-01 2000-01-05 Koenig & Bauer Ag Leiteinrichtung in Druckmaschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19651301A1 (de) 1996-12-10 1998-06-18 Hans G Platsch Trocknereinheit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006045442A1 (fr) * 2004-10-25 2006-05-04 Windmöller & Hölscher Kg Unite de ventilation dans un sechoir pour une imprimante
EP1847388A2 (fr) * 2006-04-21 2007-10-24 Platsch GmbH & Co. KG Unité de séchage et séchoir doté d'une multitude de telles unités
EP1847388A3 (fr) * 2006-04-21 2010-12-22 Platsch GmbH & Co. KG Unité de séchage et séchoir doté d'une multitude de telles unités

Also Published As

Publication number Publication date
EP1279498A3 (fr) 2005-06-15
DE10136396A1 (de) 2003-02-13

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