WO2019211005A1 - Dispositif de fixation d'une racle sur un corps de chambre a racles et chambre a racles ainsi equipee - Google Patents
Dispositif de fixation d'une racle sur un corps de chambre a racles et chambre a racles ainsi equipee Download PDFInfo
- Publication number
- WO2019211005A1 WO2019211005A1 PCT/EP2019/025130 EP2019025130W WO2019211005A1 WO 2019211005 A1 WO2019211005 A1 WO 2019211005A1 EP 2019025130 W EP2019025130 W EP 2019025130W WO 2019211005 A1 WO2019211005 A1 WO 2019211005A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fastener
- doctor blade
- retaining
- chamber
- section
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/027—Ink rail devices for inking ink rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
Definitions
- the present invention relates to the technical field of doctor blade chambers for rotary printing units by flexography and more particularly to the device for attaching the doctor blades to the body of the doctor blade chambers.
- Flexography is a rotary printing process that can be used on many supports, for example of the sheet or web type, made of cardboard or plastic material, and requiring the use of plates, or forms of printing, flexible and in relief.
- a printing machine comprises several printer groups placed one after the other and each dedicated to a specific color.
- Flexography is a rotary printing process that can be used on a variety of substrates and requires the use of relatively flexible, raised patterns or printing forms.
- a printing unit comprises a forme cylinder, configured to carry the printing form, a screen cylinder or anilox cylinder, having on its surface a set of cells for collecting ink in a quantity controlled by the cell volume, the screen cylinder being configured to transfer the ink to the plate, a doctor blade chamber, configured to fill the cells of the screened cylinder, a pump, ensuring the delivery of ink from the ink tank to the scraped chamber, and a counterpressure cylinder holding the support being printed against the platen roller.
- each scraper chamber scraper is secured to the scraper chamber body by a securing device comprising a clamping flange configured to press the scraper against a portion of the scraper chamber body and fasteners. More specifically, the clamping flange is arranged to pinch and / or press and hold the doctor blade on the body, and is screwed onto the doctor blade chamber by screwing members.
- the squeegee is a long cutting blade dangerous to handle requiring a fastening applied over the entire length of a set of screw members to be fixed on the chamber chamber doctor blade.
- the present invention aims to overcome all or some of the disadvantages described above so as to facilitate handling of the scrapers during their introduction and replacement, and thus minimize the risk of injury to operators, proposing a fixing device adapted for doctor blade squeegees to keep the hardware in place when replacing or placing the squeegee on the doctor chamber chamber.
- the present invention relates to a device for attaching a doctor blade to a doctor blade chamber comprising:
- At least one clamp configured to press the doctor blade on the doctor chamber
- At least one second fixing member configured to cooperate with the first fixing member, the flange being arranged between the first fixing member and the second fixing member.
- the first fastening member comprises at least a first retaining section having an upper end and a lower end, a second different section of the first retaining section, and
- the second fixing member comprises at least a first portion having at least one retaining element, a second portion having at least one retaining element, an intermediate portion devoid of retaining element and arranged between the first portion and the second portion, the second fixing member being movable in the first fixing member between at least:
- a second unlocking position in which the intermediate portion is positioned at the first retaining section and is free sliding relative to the first retaining section along a longitudinal axis, between a first extreme position in which the second portion is in abutment on the upper end of the first retaining section, and a second extreme position in which the first portion abuts the lower end of the first retaining section.
- the doctor blade can be put in place or changed without the attachment device is completely removed and then replaced, which avoids the loss of fasteners and restricts the number of handling of the doctor blade .
- the second fastener is released and the flange is loosened.
- the flange can remain attached to the doctor body, so that it is possible to remove or put in place the doctor blade without having to completely remove the fastener.
- the attention of the operator is focused solely on the squeegee, which significantly reduces the risk of injury or misalignment of the squeegee on the chamber chamber squeegee. Due to the simplified unlocking operations, there is no longer any need for multiple operators to set up or change a doctor blade.
- the first retaining section of the first fastener and the second portion may have at least one retaining element of the second fastener cooperating by complementary shape.
- the first retaining section of the first fastener may be provided with a thread shaped to cooperate with a retaining element provided on the second portion of the second fastener and / or with a retaining element provided on the first portion of the second fastener.
- the first fastener may be adapted to fit directly or indirectly into a hole provided on the doctor chamber chamber.
- the first fixing member may be an insert comprising an outer surface on which at least partially a retaining element is provided, preferably a thread intended to cooperate with a third fixing member. With the third fastener, the first fastener is inserted indirectly into an orifice provided on the doctor chamber chamber.
- the first fastener may be of generally cylindrical shape.
- the first retaining section of the first fastener and the second retaining section of the first fastener may be contiguous.
- the first retaining section of the first fastener may have a width or diameter substantially smaller than a width or diameter of the second retaining section of the first fastener.
- the first retaining section of the first fastener may have a height strictly less than the height of the intermediate portion of the second fastener.
- the first retaining section of the first fixing member may have a height less than or equal to the height of the second portion having at least one retaining element of the second fixing member and / or at the height of the first portion having at least one retaining element of the second fastener.
- the second fixing member may be movable in a clamping position in which the second portion of the second fixing member is entirely in the first retaining section and is preferably abutting against the lower end of the first retaining section so that the clamping flange is pressed towards the body on the doctor blade.
- the intermediate portion and the first portion of the second fastener are both arranged in the second section of the first fastener.
- the retaining element of the first portion of the second fastener may be a complementary thread of the thread formed on the first retaining section of the first fastener.
- the intermediate portion of the second fastener may be smooth.
- the intermediate portion of the second fastener has a cross section substantially smaller than the cross section of the first portion and / or the second portion.
- the first portion having at least one retaining element of the second fixing member may be distinct and arranged at a distance from the second portion having at least one retaining element of the second fixing member.
- the height of the intermediate portion of the second fixing member may be configured to define a free sliding distance of the second fixing member in the first fixing member.
- the free sliding distance may be determined to correspond to a sufficient clearance of the flange relative to the doctor chamber chamber, so as to define an extraction space or insertion of the doctor blade.
- the fixing device may comprise a set of first fasteners and a set of second fasteners, each first fastener cooperating with a second fastener.
- the second fixing member may comprise a first end on which is arranged the first portion having at least one retaining element.
- the second fixing member may comprise a second end equipped with a head.
- the second portion having at least one retaining element of the second fastener may be arranged between the first end and the second end and preferably under the head of the second fastener.
- the second end of the second fastener may comprise at least one gripping member.
- the head of the second end may be equipped with a bearing portion for abutment and to be centered in a housing formed on the clamping flange.
- the second fastener may be in the form of a double-threaded screw.
- the second fixing member may comprise a rod on which the first portion having at least one retaining element, the second portion having at least one retaining element and the intermediate portion are arranged.
- the fixing device may comprise a third fixing member comprising an internal cavity configured to at least partially accommodate the first fixing member.
- the first fixing member may comprise an outer surface on which at least partially is provided a cooperation element configured to cooperate with a complementary element formed in the internal cavity of the third fixing member.
- the third fastener may have a flared portion of support intended to be supported on the inner surface of the doctor chamber chamber.
- the third member may further include an upper flange end projecting from the outer surface of the doctor chamber body and serving as a stop for the doctor blade.
- the third fastener may include a lower end for extending into the doctor chamber chamber and configured to at least partially accommodate the first fastener.
- the internal cavity may be a through hole or a blind hole, provided at least to the lower end of the third fastener.
- the third fastener may be of generally cylindrical shape.
- the clamp may comprise a housing shaped to receive a bearing portion of the head of the second end of the second fastener.
- the invention also relates to a doctor blade chamber comprising at least one elongate body extending along a longitudinal axis and comprising a first portion on which a first squeegee is fixed by at least one fixing device according to the invention.
- the body may comprise at least a second portion on which a second scraper is fixed by at least one second fixing device according to the invention, the second scraper being arranged facing the first scraper with respect to the longitudinal axis of the body.
- the first portion of the body may be equipped with a set of orifices each for the insertion of at least a first fastener or at least a third fastener.
- the second portion of the body may be equipped with a set of orifices each intended for the insertion of at least a first fixing member or at least a third fixing member.
- the third fastener may be crimped into the opening on the doctor chamber body.
- FIG. 1 is a diagram illustrating a printing group structure
- FIG. 2 is a perspective view of a doctor blade chamber according to the invention
- FIG. 3 is a partial perspective view of the doctor blade chamber illustrated in FIG. 2, equipped with the third fixing member of the fixing device according to the invention;
- FIG. 4 is a sectional view illustrating the third fastening member of the fastening device according to the invention.
- FIG. 5 is a sectional view illustrating the first fastener mounted in the third fastener according to the invention.
- FIG. 6 is an exploded sectional view illustrating the fixing device according to the invention.
- FIG. 7 is a sectional view illustrating the fixing device according to the invention in the unlocking configuration
- Figure 8 is a sectional view illustrating the fixing device according to the invention in blocking configuration
- Figure 9 is a sectional view illustrating the fixing device according to the invention in the intermediate configuration of unlocking.
- a printing unit 100 comprises a platen roller 104 configured to support a printing plate or printing form 108, an anilox roll or cylinder 103, having on its surface a set of cells for collecting ink in quantity controlled by the volume of the cells, the screen cylinder 103 being configured to transfer the ink on the plate 108, a doctor blade chamber 101, configured to fill the cells of the screen roll 103, a pump 102 ensuring the delivery of the ink from the ink tank 107 to the doctor chamber 101, and a counter-pressure cylinder 105 holding the carrier 106 being printed against the forme cylinder 104, and thus against the plate 108.
- the doctor chamber 1 comprises an elongated body 2 extending along a longitudinal axis XX and comprising a first portion 2a configured to receive a first doctor blade 3.
- the body 2 further comprises a second portion 2b configured to receive a second squeegee 3 (see Figs 2 and 3).
- the body 2 comprises a third portion 2c connecting the first portion 2a and the second portion 2b, a cavity 2e intended to receive ink and delimited at least by the first portion 2a, the second portion 2b and the third portion 2c.
- each scraper 3 is held on the scraper chamber body 2 by a fixing device 10 according to the invention (Figs 4 to 9).
- the doctor chamber 1 is equipped with two fasteners 10.
- the scraper chamber body 2 comprises a set of orifices 2d extending along the first portion 2a and along the second portion 2b of the body 2 (Fig. 3).
- the orifices 2d are spaced regularly along each portion 2a, 2b of the body 2.
- Each orifice 2d is shaped to receive an insert corresponding to the third fastener 40 of the fastening device 10 in a preferred embodiment and illustrated. In variant not shown, each orifice 2d is shaped to receive an insert corresponding to the first fastener 20.
- the fastening device 10 comprises a clamping flange 11 configured to press the doctor blade 3 onto the chamber body 2 of the doctor blade 1 (Figs 4 to 9).
- the clamp 1 1 may be of the same length as the doctor blade 3 or different length (lower).
- the fixing device 10 can comprise several clamps 11 placed end to end so as to cover the length of the doctor blade 3.
- the fastening device 10 comprises a first fastener 20, a second fastener 30 and a third fastener 40 (see Fig. 6). It should be noted that Figs. 2 to 9 illustrate the preferred embodiment of the invention wherein the fastening device 10 comprises a third fastener 40 which could be considered optional according to the invention.
- the flange 1 1 is arranged between the first fixing member 20 and the second fixing member 30.
- the third fastener 40 is generally cylindrical in shape (Fig. 4). As can be seen in FIG. 4 in particular, the third fastener 40 comprises an internal cavity 43 configured to at least partially accommodate the first fastener 20, visible in particular in FIG. 5.
- the third fixing member 40 comprises an upper end 41 intended to be flush with the chamber body 2 of doctor blade 1 and a lower end 42 intended to extend in the body 2 chamber doctor blade 1 and configured to accommodate at least partially the first fastener 20.
- the inner cavity 43 is a through hole or a blind hole, provided at least to the lower end 42 of the third fastener 40.
- the inner cavity 43 is equipped (see Fig 4) a complementary element 44 for cooperation, in the form of a thread for example, and intended to cooperate with a retaining element 24 (visible in Fig.
- the third fixing member 40 comprises a flared portion 45 arranged between the upper end 41 and the lower end 42 of the third member of the body. fixation 40.
- the flared portion 45 is a bearing portion intended to bear on the inner surface of the chamber body 2 doctor blade 1.
- the first fastener 20 is generally cylindrical in shape (Fig. 5).
- the first fastener 20 comprises at least a first retaining section 21 having an upper end 21a and a lower end 21b and a second section 22 different from the first retaining section 21.
- the first retaining section 21 and the second Section 22 are contiguous.
- the first retaining section 21 has a width or a diameter substantially smaller than the width or the diameter of the second section 22.
- the first retaining section 21 is provided with a retaining element 23, preferably a thread intended to cooperate with an element retaining element 34b formed on the second fastening member 30.
- the first fastening member 20 comprises an outer surface on which at least partially a retaining element 24 is provided in the form of a thread complementary to that 44 formed in the third fastener 40.
- the second fastener 30 is configured to cooperate with the first fastener 20 (Fig. 6).
- the second fastener 30 comprises at least a first portion 31 having at least one retaining element 34a, a second portion 32 having at least one retaining element 34b, an intermediate portion 33 devoid of retaining element and arranged between the first and second retaining elements. portion 31 and the second portion 32.
- the second fastener 30 is movable in the first fastener 20 between at least one first locking position and an unlocking position (Fig. 8).
- the blocking position consists in that the second portion 32 cooperates with the first retaining section 21 of the first fixing member 20, and the first portion 31 is arranged in the second section 22.
- the unblocking position consists in that the intermediate portion 33 is positioned at the first retaining section 21 and is free sliding relative to the first retaining section 21 along a longitudinal axis AA, between a first position extreme in which the second portion 32 of the second fastener 30 abuts the upper end 21a of the first retaining section 21, and a second extreme position in which the first portion 31 of the second fastener 30 is in position. abutment on the lower end 21b of the first retaining section 21 (Fig. 7).
- the first portion 31 of the second fixing member 30 is arranged in the second section of the first fixing member 20.
- the second portion 32 of the second fixing member 30 is out, it is that is to say completely clear, of the first fastener 20.
- the first retaining section 21 has a height strictly smaller than the height of the intermediate portion 33, which allows free sliding from one extreme position to another.
- the first retaining section 21 has a height less than or equal to the height of the second portion 32 and / or the height of the first portion 31.
- the height of the intermediate portion 33 is configured to define a free sliding distance of the second fastener 30 in the first fastener 20, the free sliding distance being determined to correspond to a sufficient spacing of the flange by relative to the doctor chamber chamber, so as to define a space for extraction or insertion of the doctor blade (see Fig. 9).
- the second fastener 30 may also be in a clamping position in which the second portion 32 of the second fastener 30 is entirely in the first retaining section 21 and is preferably abutted against the lower end 21. b of the first retaining section 21 so that the flange 11 is pressed towards the body on the doctor blade (Fig. 8). In the clamping position, the intermediate portion 33 and the first portion 31 of the second fastener 30 are both arranged in the second section 22 of the first fastener 20.
- the second fastening member 30 may also be in an intermediate unlocking position, in which the intermediate portion 33 is not slidably free and the second portion 32 is partially engaged in the first retaining section 21.
- the retaining element 34a of the first portion 31 is a complementary thread of the thread 23 formed on the first retaining section 21 (FIG 6).
- the retaining element 34b of the second portion 32 is a complementary thread of the thread 23 formed on the first retaining section 21.
- the intermediate portion 33 is smooth.
- the second fastener 30 comprises a first end 35 on which is arranged the first portion 31 and a second end 36 equipped with a head, the second portion 32 being arranged between the first end 35 and the second end 36 and preferentially under the head the second fastener 30 (Fig. 6).
- the second end 36 of the second fastener 30 comprises at least one gripping member 37.
- the head of the second end 36 is equipped with a bearing portion 38 intended to bear in a housing (not shown) provided on the clamp 1 1.
- the second fastener 30 is in the form of a double-threaded screw, comprising a rod on which the first portion 31, the second portion 32 and the intermediate portion 33 are arranged.
- Each fastener 10 comprises a set of first fasteners 20, a set of second fasteners 30, each first fastener 20 cooperating with a second fastener 30 (Fig. 2).
- the clamp 1 1 comprises a nip portion 12 intended to be in contact and bearing on the doctor blade 3 (FIG 6).
- the clamp 1 1 further comprises a bearing portion 13 opposite to the nip portion 12 and configured to bear on the chamber body 2 doctor blade 1.
- the clamp 1 1 comprises a housing (not shown) shaped to receive the bearing portion 38 of the head of the second end 36 of the second fastener 30.
- a third fixing member 40 (FIG 4) is inserted into each opening 2d of the doctor body chamber 2 1.
- the third fastener 40 is crimped on the body 2.
- the first fastener 20 is inserted into the third fastener 40 (Fig. 5).
- the first member 20 is preferably screwed into the third fastener 40.
- the clamping flange 1 1 is positioned on the chamber body 2 with doctor blade 1 and the second fastening member 30 is inserted through the clamping flange 1 January into the first fixing member 20, by screwing the first portion 31 of the second fastener 30 until the first portion 31 of the second fastener 30 is in the second section 22 of the first fastener 20 and the second fastener 30 is in the unlocking position (FIG. 7).
- the unlocking position it is easy to insert the doctor blade 3 in the space between the clamping portion 12 of the flange and the body 2 by moving the second fastening member and the clamping flange 11 along the length longitudinal axis AA of sliding.
Landscapes
- Rotary Presses (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Paper (AREA)
- Coating Apparatus (AREA)
- Screen Printers (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020207030991A KR102394966B1 (ko) | 2018-04-30 | 2019-04-26 | 닥터 블레이드 챔버에 닥터 블레이드를 부착하기 위한 디바이스 및 따라서 구비된 닥터 블레이드 챔버 |
JP2020560386A JP7015943B2 (ja) | 2018-04-30 | 2019-04-26 | ドクターブレードチャンバー上にドクターブレードを取り付けるための装置及びこのように装備されたドクターブレードチャンバー |
CN201980029425.6A CN112055656B (zh) | 2018-04-30 | 2019-04-26 | 用于将刮墨刀紧固在刮墨刀腔上的装置及装备所述装置的刮墨刀腔 |
US17/045,743 US11420436B2 (en) | 2018-04-30 | 2019-04-26 | Device for attaching a doctor blade on a doctor blade chamber and doctor blade chamber thus equipped |
EP19721191.5A EP3787899B1 (fr) | 2018-04-30 | 2019-04-26 | Dispositif de fixation d'une racle sur un corps de chambre a racles et chambre a racles ainsi equipee |
ES19721191T ES2923373T3 (es) | 2018-04-30 | 2019-04-26 | Dispositivo de fijación de una rasqueta sobre un cuerpo de cámara de rasquetas y cámara de rasquetas equipada de este modo |
DK19721191.5T DK3787899T3 (da) | 2018-04-30 | 2019-04-26 | Apparat til fastgørelse af en rakel på et legeme med rakelkamre samt dermed udstyret rakelkammer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR18/00384 | 2018-04-30 | ||
FR1800384A FR3080568B1 (fr) | 2018-04-30 | 2018-04-30 | Dispositif de fixation d'une racle sur un corps de chambre a racles |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019211005A1 true WO2019211005A1 (fr) | 2019-11-07 |
Family
ID=63209455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2019/025130 WO2019211005A1 (fr) | 2018-04-30 | 2019-04-26 | Dispositif de fixation d'une racle sur un corps de chambre a racles et chambre a racles ainsi equipee |
Country Status (9)
Country | Link |
---|---|
US (1) | US11420436B2 (fr) |
EP (1) | EP3787899B1 (fr) |
JP (1) | JP7015943B2 (fr) |
KR (1) | KR102394966B1 (fr) |
CN (1) | CN112055656B (fr) |
DK (1) | DK3787899T3 (fr) |
ES (1) | ES2923373T3 (fr) |
FR (1) | FR3080568B1 (fr) |
WO (1) | WO2019211005A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4453463A (en) * | 1981-07-13 | 1984-06-12 | Dahlgren Harold P | Inking systems |
WO2005005148A1 (fr) * | 2003-07-10 | 2005-01-20 | Comexi, Sa | Dispositif de fixation de feuillard de racloir dans un racloir de rouleau d'impression |
WO2008152022A1 (fr) * | 2007-06-11 | 2008-12-18 | Windmöller & Hölscher Kg | Racle de compartiment à encre dans un mécanisme d'encrage de presse rotative et procédé pour produire une racle de compartiment à encre |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60001419T2 (de) | 1999-06-22 | 2003-11-27 | Tresu Production A/S, Bjert | Kammerrakelsystem |
DE10255411A1 (de) * | 2002-11-28 | 2004-06-24 | Windmöller & Hölscher Kg | Farbkammerrakel |
CN107614266B (zh) | 2015-06-04 | 2019-06-21 | 丹麦得利速股份公司 | 组合刮墨刀腔 |
-
2018
- 2018-04-30 FR FR1800384A patent/FR3080568B1/fr active Active
-
2019
- 2019-04-26 ES ES19721191T patent/ES2923373T3/es active Active
- 2019-04-26 US US17/045,743 patent/US11420436B2/en active Active
- 2019-04-26 WO PCT/EP2019/025130 patent/WO2019211005A1/fr unknown
- 2019-04-26 CN CN201980029425.6A patent/CN112055656B/zh active Active
- 2019-04-26 JP JP2020560386A patent/JP7015943B2/ja active Active
- 2019-04-26 EP EP19721191.5A patent/EP3787899B1/fr active Active
- 2019-04-26 DK DK19721191.5T patent/DK3787899T3/da active
- 2019-04-26 KR KR1020207030991A patent/KR102394966B1/ko active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4453463A (en) * | 1981-07-13 | 1984-06-12 | Dahlgren Harold P | Inking systems |
WO2005005148A1 (fr) * | 2003-07-10 | 2005-01-20 | Comexi, Sa | Dispositif de fixation de feuillard de racloir dans un racloir de rouleau d'impression |
WO2008152022A1 (fr) * | 2007-06-11 | 2008-12-18 | Windmöller & Hölscher Kg | Racle de compartiment à encre dans un mécanisme d'encrage de presse rotative et procédé pour produire une racle de compartiment à encre |
Also Published As
Publication number | Publication date |
---|---|
CN112055656A (zh) | 2020-12-08 |
JP7015943B2 (ja) | 2022-02-03 |
JP2021519712A (ja) | 2021-08-12 |
KR102394966B1 (ko) | 2022-05-04 |
KR20200136026A (ko) | 2020-12-04 |
FR3080568A1 (fr) | 2019-11-01 |
EP3787899A1 (fr) | 2021-03-10 |
US20210031506A1 (en) | 2021-02-04 |
US11420436B2 (en) | 2022-08-23 |
FR3080568B1 (fr) | 2020-04-03 |
CN112055656B (zh) | 2022-01-14 |
DK3787899T3 (da) | 2022-07-18 |
EP3787899B1 (fr) | 2022-06-15 |
ES2923373T3 (es) | 2022-09-27 |
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