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EP0094589A1 - Racle-rouleau pour installations d'enductions - Google Patents

Racle-rouleau pour installations d'enductions Download PDF

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Publication number
EP0094589A1
EP0094589A1 EP83104567A EP83104567A EP0094589A1 EP 0094589 A1 EP0094589 A1 EP 0094589A1 EP 83104567 A EP83104567 A EP 83104567A EP 83104567 A EP83104567 A EP 83104567A EP 0094589 A1 EP0094589 A1 EP 0094589A1
Authority
EP
European Patent Office
Prior art keywords
doctor
guide
roller
squeegee
doctor roll
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Withdrawn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
EP83104567A
Other languages
German (de)
English (en)
Inventor
Mathias Mitter
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0094589A1 publication Critical patent/EP0094589A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0088—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00 using a short bath ratio liquor
    • D06B19/0094—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00 using a short bath ratio liquor as a foam

Definitions

  • the invention relates to a doctor device with a doctor roller according to the preamble of claim 1.
  • Squeegee devices of this type with a doctor roller are often used over large working widths, for example for printing carpets, textiles and the like, the doctor roller having to span 5 m and more at these working widths.
  • doctor blade diameters of 160 mm are generally used to ensure that, especially at high speeds, the doctor roller rolls securely on the goods, does not vibrate in the middle: and when used in round stencils, a uniform pressure the template on the goods guaranteed.
  • These big squeegee rolls. diameter lie with a relatively large lateral surface section on the template and on the goods and release a relatively long acute angle in the inlet gusset for the medium, so that delicate. Sample with this great R akel malmessern not in certain fabric qualities can be readily printed.
  • Squeegee rolls with smaller diameters are already known. These are generally held in place by magnets located in the counter bearing. Although these magnetic bars can hold the squeegee rollers in their position inside the stencil on the goods at relatively low speeds, they fail at higher speeds, when using more viscous pastes and with large working widths.
  • the small squeegee roller practically floats, may even be flooded by the application medium, lose its contact with the contact surface and is simply carried along by the rotation, for example a circular screen.
  • the present invention is therefore based on the object of making it possible to use small-caliber doctor rollers, without having to accept the disadvantages otherwise present.
  • doctor rollers With the doctor device according to the invention, it is now possible to use doctor rollers with a relatively small diameter, since the doctor roller is encompassed by a guide which stabilizes the doctor roller.
  • the guide consists of mechanically softer devices than the doctor roll itself. With large working widths, however, the guide can be made particularly stable, so that even with relatively small caliber doctor rolls there is a guarantee that the doctor roll rests evenly on the stencil and on the goods. Even at high working speeds, the doctor blade cannot swing.
  • the device is designed according to claim 5, so that there is the possibility to lift the entire unit out of the working position without complicated assembly manipulations and, if necessary, to remove it with the template.
  • the doctor device consists of a doctor roller 1, which is preferably arranged in a rotating screen template 2.
  • the squeegee roller is positively engaged in its upper region, preferably encompassed by a guide 3 stabilizing the squeegee roller over more than 180 °.
  • the guide 3 consists of mechanically softer devices than the roller itself. It takes up the doctor roller 1 in a positive connection, the doctor roller 1 being rotatably located in the fixed guide 3.
  • Doctor roll 1 and guide 3 form a unit, namely a vertically movable unit, so that the doctor roll 1 rests with its own weight on the inner surface of the template 2 and thus on the web 8.
  • a counter pressure bar 5 is shown in FIG. 1 as support and counter pressure bearing. Other elements can be arranged here, a suction box, a counter-pressure roller and the like.
  • the guide 3 is held by a cross member 4 or a cross member 4 designed as a receptacle 40.
  • This cross member can e.g. U-shaped, square or square in cross-section and designed as a hollow profile no. 1 shows a U-profile.
  • the screen template 2 is mounted in side bearings 20, which can also be designed as an open top bearing.
  • the screen template is driven by drive wheels 21 coming from a main drive wheel 22, which also drives a drive wheel 10 of the doctor roller 1.
  • the second drive wheel 10 ′ of the doctor roller 1 drives a gear wheel 22 ′, which corresponds to the main drive wheel 22, and the second drive wheel 21 of the screen template 2 is carried along via this gear wheel 22 ′.
  • the shafts 11 of the doctor roller 1 are passed through the side bearings 21 and are mounted outside of the template in movable bearings 12.
  • These bearings 12 can be designed, for example, as sliding bearings so that the entire unit can be moved up and down in the direction of arrow A.
  • the crossbeam 4 is also passed through the side bearings 20 or extends beyond the side bearings 20 and is held in the region of the side bearing heads in vertical guides 23.
  • the height adjustability of the side bearings 20, their adjustability, displaceability, adjustability in relation to the longitudinal and transverse repeat is self-evident and also known.
  • the template 2 is fastened via bolts 24 to the bearing sleeves 25 in such a way that the template 2 can be inserted into the bearing sleeves 25 in the direction of the arrow A and can also be removed again.
  • Fig. 1 only a strand of the endlessly running printing blanket 50 is shown. These are known means.
  • the doctor roller 1 is shown as a tube with a continuous shaft 11.
  • the doctor roller lies in front of a media pool 7.
  • This media pool is created, for example, by an ink supply tube (not shown), known per se, provided with outlet openings in the area of the screen template 2, or by other supply means, for example, and running pipe outlets and the like.
  • This pool of color is also limited in height in a manner not shown, but with known means.
  • the guide 3 encompasses the doctor roller 1 beyond 180 °, so that the doctor roller 1 is positively gripped by it and is also securely held in the guide when a change in position of the entire unit consisting of doctor roller 1 with guide 3 and crossbar in arrow directions A. 4 in the arrow directions A between the vertical guides 23 is desired.
  • the vertical guides 23 are thus fixed and the entire unit can be shifted, in particular also because the outer bearings of the shaft or shafts 11 of the doctor roller 1 are designed as movable bearings that take part in this movement.
  • the entire unit rests with its own weight on the printing line 13, namely on the template 2 and the substrate (not shown in FIG. 2), for example the web 8.
  • the guide 3 and the cross member 4 can each consist of several parts. It can also be simply two parts screwed together, as shown in FIG. 2.
  • the crossmember 4 is designed as a receptacle 40, specifically as a continuous U-iron with the opening facing upwards.
  • Pressure-boosting elements which are designated by 9 in the drawing, can be introduced into this receiving container. These pressure-boosting elements can be weights, rods, a liquid, bulk material such as pebbles, balls, rollers or the like. In the figure there is an iron bar, balls and bulk goods are indicated.
  • a pressure hose as a pressure-boosting element. This is then supported on a second crossbar 41, which is fixedly mounted in the side bearing heads of the application device, since it is intended to form an abutment for the pressure hose 90.
  • the pressure hose preferably a rubber hose, extends over the entire length of the squeegee 1 and can be subjected to adjustable pressure in order to press the squeegee device in the direction of arrow A against the inner surface of the stencil 2 or against the goods and their supports, e.g. to press the counter pressure bar 5.
  • the device can be used to apply liquid, foamed or pasty media to material webs.
  • the application can take place directly on the substrate or also with the interposition of a template, a screen or the like.
  • the screens or templates can be patterned or unpatterned. In screen printing machines or screen printing-like.
  • Lichen machines or the like in a manner known per se the supply of the application medium of a liquid or pasty color. done differently.
  • webs with a fibrous structure come into consideration as the substrate, such as textiles of all kinds, including carpets, florware, velvet, also nonwovens, but also felts.
  • non-wowen and paper can be colored, printed or treated in this way, as well as plastics, e.g. should be coated.
  • the goods can be flat-flat goods in plate form, in foil form or in sheet form, but also, if they are close together and form a uniform surface, any other goods.
  • the guide 3 or the guide parts can be pulled continuously over the entire length of the doctor roller, the guide parts can only be partially provided, as shown in FIG. 4 and as indicated in FIG. 1.
  • the guide parts can consist of metal, can be drilled out of one part each, but they can also be composed of several parts, for example partial shells. It is essential that the guide consists of mechanically softer devices than the roller itself.
  • the guide is intended to hold the roll, which can have a relatively small diameter of, for example, 80 mm, over large working widths.
  • the guide should be closed at the front in the area of the ink pool Have front so that the paint pool has a closed system. This is only possible with a continuous tour.
  • the unit consisting of guide 3 and squeegee roller 1, preferably with cross member 4, gives the physical pressure that lies on the goods. As already mentioned, this pressure can be increased by additional pressure-increasing elements 9.
  • the doctor roll 1 is generally to be driven. However, there is also the possibility of inserting a non-driven roller into the guide 3, which roller is only carried along by friction, solely through the rotation of the template.
  • the screen cylinder or the template is preferably provided as a rotating element. This can be a stencil tape that is guided over rollers or a cylindrical stencil.
  • the cross member 4 can also be any other support body than shown and described.
  • the guide 3 encompasses the doctor roller in a cage-like manner through the continuous guide or the guide parts, the guide 3 being designed as an elongated body into which the hollow recess for the doctor roller is incorporated, the body preferably tapering evenly downwards and ends like a lip.
  • any other holder, a carrier or the like can. be used.
  • the softer choice of material for the guide in relation to the rake.l roll has been chosen in order not to get any scoring in the squeegee material.
  • the leadership 3 must give stability.
  • the guide should include the squeegee roller, grip it, hold it, and, as mentioned, really hold it over 180 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Screen Printers (AREA)
EP83104567A 1982-05-13 1983-05-10 Racle-rouleau pour installations d'enductions Withdrawn EP0094589A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3218113 1982-05-13
DE19823218113 DE3218113A1 (de) 1982-05-13 1982-05-13 Rakeleinrichtung mit rakelrolle fuer auftragseinrichtungen zum auftragen von fluessigen, verschaeumten oder pastoesen medien auf warenbahnen

Publications (1)

Publication Number Publication Date
EP0094589A1 true EP0094589A1 (fr) 1983-11-23

Family

ID=6163536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104567A Withdrawn EP0094589A1 (fr) 1982-05-13 1983-05-10 Racle-rouleau pour installations d'enductions

Country Status (2)

Country Link
EP (1) EP0094589A1 (fr)
DE (1) DE3218113A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH442364A (de) * 1965-09-29 1967-08-31 Aston Martin Co Rollrakel
FR2084745A5 (fr) * 1970-03-17 1971-12-17 Voith Gmbh
FR2093509A5 (fr) * 1970-05-15 1972-01-28 Ichinose Shirou
GB2057303A (en) * 1979-09-01 1981-04-01 Kuesters E Method and apparatus for the treatment of a web
GB2075375A (en) * 1980-05-03 1981-11-18 British Industrial Plastics Foam application of resin to textiles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT357506B (de) * 1973-02-07 1980-07-10 Zimmer Peter Ag Rakeleinrichtung mit einem allseitig ge- schlossenen rakelgehaeuse
DE2754663C3 (de) * 1977-12-08 1982-02-25 Mathias 4815 Schloss Holte Mitter Vorrichtung, bei der mittels einer Siebschablone aufgetragene Farbe o.dgl. in luftdurchlässiges Material eingesaugt wird
DE3034804C2 (de) * 1980-09-16 1983-12-08 Mathias 4815 Schloss Holte Mitter Vorrichtung zum Auftragen eines Mediums auf eine Siebschablone, insbesondere zum Drucken oder Färben

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH442364A (de) * 1965-09-29 1967-08-31 Aston Martin Co Rollrakel
FR2084745A5 (fr) * 1970-03-17 1971-12-17 Voith Gmbh
FR2093509A5 (fr) * 1970-05-15 1972-01-28 Ichinose Shirou
GB2057303A (en) * 1979-09-01 1981-04-01 Kuesters E Method and apparatus for the treatment of a web
GB2075375A (en) * 1980-05-03 1981-11-18 British Industrial Plastics Foam application of resin to textiles

Also Published As

Publication number Publication date
DE3218113A1 (de) 1983-11-24

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19840424

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Effective date: 19850827