WO2009007473A1 - Aparato rascador para la industria papelera - Google Patents
Aparato rascador para la industria papelera Download PDFInfo
- Publication number
- WO2009007473A1 WO2009007473A1 PCT/ES2008/000112 ES2008000112W WO2009007473A1 WO 2009007473 A1 WO2009007473 A1 WO 2009007473A1 ES 2008000112 W ES2008000112 W ES 2008000112W WO 2009007473 A1 WO2009007473 A1 WO 2009007473A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tray
- magnetic
- paper industry
- frame
- scraper
- Prior art date
Links
- 238000007790 scraping Methods 0.000 title claims abstract 6
- 230000005291 magnetic effect Effects 0.000 claims abstract description 65
- 239000003302 ferromagnetic material Substances 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims description 7
- 230000000284 resting effect Effects 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000005294 ferromagnetic effect Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 description 14
- 238000003780 insertion Methods 0.000 description 14
- 230000037431 insertion Effects 0.000 description 14
- 235000014676 Phragmites communis Nutrition 0.000 description 13
- 241000446313 Lamella Species 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000003252 repetitive effect Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G3/00—Doctors
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G3/00—Doctors
- D21G3/005—Doctor knifes
Definitions
- the object of the invention is a scraper apparatus for the paper industry, of which they consist of a scraper blade, a support of the scraper blade with a pivot axis with respect to a tray, said tray resting on the frame of the apparatus.
- the object of the invention relates to extraction, insertion and mooring solutions of a carrier on the frame of a doctor, in which access is limited to the sides of said doctor.
- the insertion and removal operations of the lamella holder may have difficulties a ⁇ ) as the guidance becomes dirty, the insertion and removal operation is more difficult to perform (and if the initial clearance is not high this problem is accentuated).
- the positioning of the sheet may not be repetitive.
- the known technology employs:
- the scraper apparatus for the paper industry object of the invention solves these limitations and / or defects with a different technology that uses magnetic forces to tie the sheet holder to the frame.
- the use of magnetic forces allows the clamping force to be deactivated or activated by a simple operation, and in addition, said activation or deactivation operation can be performed remotely, so that from the side of the doctor, the force can be activated or deactivated which occurs throughout the entire doctor.
- the magnetic tie provides the system with the possibility of using high clearances in the guidance system, which translates into greater ease of extraction and insertion, since once the system is assembled, said clearance is eliminated by magnetic forces.
- a system whose positioning is repetitive can be realized.
- the scraper apparatus for the paper industry object of the invention being those consisting of a scraper blade, a support of the scraper blade with a pivot axis with respect to a tray, said tray resting on the frame of the apparatus, is characterized in that:
- a) magnetic means are disposed to exert magnetic forces between the tray or fixed element thereto and the frame, and
- the magnetic means consist that in a conjugate / correspondence form, at least one area of ferromagnetic material and permanent magnets or electromagnets are arranged in the tray-frame.
- the magnetic attraction force of the fastening system is deactivated, so that now the reed holder and the doctor are joined by means of very simple fastening elements, and with great slack, allowing the reed holder to exit of the doctor.
- the lateral insertion of the lamella holder is successively carried out in the doctor; the positioning of the sheet holder on the doctor, and the activation of the magnetic force of attraction.
- the reed carrier Once the reed carrier is inserted, it is possible to tie it in any position of the reed holder acting only on the side of the reed (in the case of a permanent magnet) or even from a control cabinet (in the case of an electromagnet).
- the clamping force can be activated and deactivated easily.
- the system can be sized so that the adequate clamping force is realized. Even by simple modifications, said force could vary after construction (by modifying the working intensity in an electromagnet-based actuator or by modifying the distance between magnets in an actuator based on permanent magnets).
- the insertion and extraction process is a simple operation to perform.
- Figure 1 represents a general view, in elevation, of a scraper apparatus, according to the invention for an exemplary embodiment.
- Figure 2 represents a general view, in elevation, of a scraper apparatus, according to the invention for an alternative embodiment.
- Figure 3 represents a general view, in elevation, of a scraper apparatus, according to the invention for an alternative embodiment, with the magnetic actuator in an internal arrangement under the guide button.
- Figure 4 represents a general view, in elevation, of a scraper apparatus, according to the invention for an alternative embodiment, with a magnetic actuator in rear exterior arrangement when the magnet is not acting -figure 4a- and when the magnet is acting -figure 4b-,
- Figure 5 is an enlarged detail view, corresponding to Figure 4.
- Figure 6 represents a general view, in elevation, of a scraper apparatus, according to the invention for an alternative embodiment, which includes two magnetic actuators, one in front arrangement and one in rear arrangement.
- Figure 7 represents an alternative embodiment of Figure 3.
- Figure 8 represents an alternative embodiment of Figure 4.
- the object of the invention is a scraper apparatus for the paper industry of which they consist of a scraper blade (I), a support (s) of the scraper blade (I) with a pivot axis (e) with respect to a tray (4), said tray (4) resting on the frame (b) of the apparatus.
- a) magnetic means are disposed to exert magnetic forces between the tray (4) or fixed element thereto and the frame, and
- the lanyard of the lamella on the doctor is performed only by magnetic forces.
- the guidance of the system takes place using elements (5) whose function is only to guide the blade holder at the time when the magnetic force is deactivated, and to allow the lateral extraction of the blade holder.
- the function of the guiding elements (5) for the extraction is limited exclusively to holding the reed holder when the extraction or insertion operation of the reed carrier is performed on the doctor.
- the tie-up of the blade holder to the doctor is carried out by means of the force of attraction of the magnetic actuator assembly (1, 2 and 3) on the base (4) of the blade holder.
- the magnetic actuator assembly includes at least one permanent or electromagnetic magnet (1) permeable material (2) and non-permeable material (3) disposed in the frame (b) and said permanent magnet / electromagnet (1) acting or not zone of ferromagnetic material (z) arranged in the sheet holder (s).
- this composition we identify this composition as a set of magnetic media (1), (2), (3).
- FIG. 2 The embodiment represented in Figure 2 is similar to that represented in Figure 1, but including an element (1 1) guided in a longitudinal groove (r); so that it is arranged:
- the tray (4) can pivot slightly with respect to the frame (b) and / or can move longitudinally therein.
- this second solution is similar to the operation of the first solution described above, the main difference with respect to it is that if the magnetic actuator (1) cannot withstand the efforts generated in the process, the guiding element (1 1 ) may absorb such efforts.
- This second solution can also be implemented, as shown in Figure 3, including the set of means magnetic (1), (2), (3) under the guide element (1 1). This solution simplifies the manufacture of the apparatus, although it requires more powerful magnets to support the same load.
- FIGs 4a and 4b is similar to that represented in Figure 2 with the particularity that has the set of magnetic means (1), (2), (3) on the opposite side (front in Figure 2 and behind in Figure 4).
- the guiding element (11) defines an interior position (15) with walls (16) conjugated with the walls of an opening (ch) defined in a supplementary support element (14) - see detail, figure 5-.
- the magnetic tie is used to fix the sheet holder (s) against the frame (b) fixedly.
- the efforts that the magnetic tie (1), (2), (3) must make are very small, and when said tie is made, the position of the sheet holder (5) with respect to the frame (b) is repetitive and The clearances that exist at the time of assembly are completely canceled.
- the mounting clearance is removed when activating the magnetic actuator (1), (2), (3), then the reed holder rests on the supplementary element (14), and on the conical face of the button (1 1).
- the force of the process in this case is in favor of the magnet (1) and therefore the magnetic system is less bulky than in the solutions described above.
- This embodiment has two different states once the lamella (5) has been inserted into the doctor: 1 .- Actuator without acting ( Figure 4a)
- the force made by the magnetic actuator is negligible, and the reed is supported on the supplementary element (14) and on the guiding elements (1 1).
- the clearance (r) that exists in this situation is high since the supplementary support element (14) cannot only restrict movements from left to right as well as the rotation on that same point.
- the position of the sheet holder with respect to the guide is any intermediate position.
- the existing path between both extreme positions is the clearance (r) that the system will have at the time the extraction or insertion of the lamella of the doctor's frame is made.
- the extraction and insertion operations will be easier to carry out the greater the existing clearance (r).
- the actuation of the magnetic means (1), (2), (3) makes it possible to cancel said gaps (r) once the extraction and insertion operations have been carried out.
- the clearances (r) are no longer necessary, and can only provide negative aspects in the operation of the apparatus.
- the embodiment represented in Figure 6 is similar to that represented in Figure 4 with the particularity that it has more than one set of magnetic means (1), (2), (3). Specifically, at least one set of magnetic means (1), (2), (3) is provided on each side of the pivot axis (e).
- the sheet holder is supported on the entire base (4) because it is acting on both sides of the blade holder.
- the guide element (1 1) is arranged centrally with respect to the pivot axis (e) - figures 2, 3, 4, 6, 7 and 8-
- the magnetic means (1), (2), (3) are arranged with respect to the pivot axis (e) on one side, closer to the sheet (I) -figures
- the mooring system can be arranged in different ways, obtaining different benefits. They include, among other possibilities:
- the magnetic means (1), (2), (3) have either the frame (b) and the lamella holder (4) either or vice versa: the magnet / electromagnet assembly (1) / permeable material (2) / non-permeable material (3) in the sheet holder (4) and the area of ferromagnetic material (z) in frame (b).
- the magnetic means (1), (2), (3) can be tied either to the frame (b) or to the base of the sheet holder (s).
- the actuation means are mechanical / manual and in the assembly (1) the magnetic means are magnets in such a way that the flow of the magnets (1) is oriented or not towards the zone (z) of ferromagnetic material.
- the drive means are current activation / deactivation means and the magnetic means (1), (2), (3) are electromagnets such that they are activated / deactivated by electrical connection / disconnection even with remote control.
- the same function can be performed by two different types of magnetic means (1), (2), (3): the electromagnetic actuator and the permanent magnet actuator.
- the pivot axis (e) is rolling, presenting, for example, tubular configuration.
Landscapes
- Paper (AREA)
- Coating Apparatus (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Electromagnets (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Sheet Holders (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES08736714.0T ES2650447T3 (es) | 2007-07-11 | 2008-02-27 | Aparato rascador para la industria papelera |
EP08736714.0A EP2169114B1 (fr) | 2007-07-11 | 2008-02-27 | Appareil de raclage pour l'industrie papetière |
CA2672556A CA2672556C (en) | 2007-07-11 | 2008-02-27 | Scraping apparatus for the paper industry |
BRPI0806815-1A BRPI0806815A2 (pt) | 2007-07-11 | 2008-02-27 | aparelho de raspar para a indústria de papel |
CN2008800241693A CN101755091B (zh) | 2007-07-11 | 2008-02-27 | 用于纸工业的刮削设备 |
US12/524,046 US7972481B2 (en) | 2007-07-11 | 2008-02-27 | Scraping apparatus for the paper industry |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200701941A ES2310976B1 (es) | 2007-07-11 | 2007-07-11 | Aparato rascador para la industria papelera. |
ESP200701941 | 2007-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009007473A1 true WO2009007473A1 (es) | 2009-01-15 |
Family
ID=40192863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2008/000112 WO2009007473A1 (es) | 2007-07-11 | 2008-02-27 | Aparato rascador para la industria papelera |
Country Status (7)
Country | Link |
---|---|
US (1) | US7972481B2 (es) |
EP (1) | EP2169114B1 (es) |
CN (1) | CN101755091B (es) |
BR (1) | BRPI0806815A2 (es) |
CA (1) | CA2672556C (es) |
ES (2) | ES2310976B1 (es) |
WO (1) | WO2009007473A1 (es) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2288120B1 (es) * | 2006-05-25 | 2008-10-16 | Jose Joaquin Amonarriz Azcolain | Procedimiento e instalacion de crepado y corte. |
CA2754560C (en) * | 2009-03-03 | 2019-04-09 | Ats Automation Tooling Systems Inc. | Multi-mode and multi-pitch conveyor system |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB964357A (en) * | 1960-09-27 | 1964-07-22 | Buehler Ag Geb | Holding device for scraper blades of roller mills |
DE3618772A1 (de) * | 1986-06-04 | 1987-12-10 | Sohlberg Lars Goeran | Verfahren zur einstellung des rakels bei einer druckmaschine, und vorrichtung zur durchfuehrung eines solchen verfahrens |
EP1042554A1 (en) | 1997-12-22 | 2000-10-11 | Thermo Web Systems, Inc. | Removable doctor blade holder |
EP1381733A1 (en) | 2001-04-24 | 2004-01-21 | Kadant Web Systems Inc. | Removable doctor blade holder |
EP1541761A1 (de) * | 2003-12-12 | 2005-06-15 | Voith Paper Patent GmbH | Rakelvorrichtung |
WO2006091427A1 (en) | 2005-02-22 | 2006-08-31 | Kadant Web Systems, Inc. | Removable doctor blade holder with lockable mount |
EP1734182A1 (en) | 2005-06-17 | 2006-12-20 | Metso Paper, Inc. | Composite doctor arrangement |
EP1746206A1 (de) | 2005-07-23 | 2007-01-24 | Voith Patent GmbH | Schabervorrichtung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3882817A (en) * | 1974-01-11 | 1975-05-13 | Black Clawson Co | Doctor Blade Assembly |
US4860686A (en) * | 1986-11-26 | 1989-08-29 | Beloit Corporation | Coating width regulating apparatus |
DE4008435A1 (de) * | 1989-06-22 | 1991-01-03 | Voith Gmbh J M | Streicheinrichtung |
US5138970A (en) * | 1989-06-22 | 1992-08-18 | J.M. Voith Gmbh | Device for coating web material |
FI116797B (fi) * | 2004-03-25 | 2006-02-28 | Runtech Systems Oy | Jousikaavin |
-
2007
- 2007-07-11 ES ES200701941A patent/ES2310976B1/es not_active Expired - Fee Related
-
2008
- 2008-02-27 EP EP08736714.0A patent/EP2169114B1/fr not_active Not-in-force
- 2008-02-27 BR BRPI0806815-1A patent/BRPI0806815A2/pt not_active IP Right Cessation
- 2008-02-27 US US12/524,046 patent/US7972481B2/en not_active Expired - Fee Related
- 2008-02-27 WO PCT/ES2008/000112 patent/WO2009007473A1/es active Application Filing
- 2008-02-27 CA CA2672556A patent/CA2672556C/en not_active Expired - Fee Related
- 2008-02-27 ES ES08736714.0T patent/ES2650447T3/es active Active
- 2008-02-27 CN CN2008800241693A patent/CN101755091B/zh not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB964357A (en) * | 1960-09-27 | 1964-07-22 | Buehler Ag Geb | Holding device for scraper blades of roller mills |
DE3618772A1 (de) * | 1986-06-04 | 1987-12-10 | Sohlberg Lars Goeran | Verfahren zur einstellung des rakels bei einer druckmaschine, und vorrichtung zur durchfuehrung eines solchen verfahrens |
EP1042554A1 (en) | 1997-12-22 | 2000-10-11 | Thermo Web Systems, Inc. | Removable doctor blade holder |
EP1381733A1 (en) | 2001-04-24 | 2004-01-21 | Kadant Web Systems Inc. | Removable doctor blade holder |
ES2282411T3 (es) * | 2001-04-24 | 2007-10-16 | Kadant Web Systems Inc. | Sujetador de cuchilla raspadora desmontable. |
EP1541761A1 (de) * | 2003-12-12 | 2005-06-15 | Voith Paper Patent GmbH | Rakelvorrichtung |
WO2006091427A1 (en) | 2005-02-22 | 2006-08-31 | Kadant Web Systems, Inc. | Removable doctor blade holder with lockable mount |
EP1734182A1 (en) | 2005-06-17 | 2006-12-20 | Metso Paper, Inc. | Composite doctor arrangement |
EP1746206A1 (de) | 2005-07-23 | 2007-01-24 | Voith Patent GmbH | Schabervorrichtung |
Non-Patent Citations (1)
Title |
---|
See also references of EP2169114A4 |
Also Published As
Publication number | Publication date |
---|---|
CA2672556A1 (en) | 2009-01-15 |
ES2310976B1 (es) | 2009-11-19 |
US20100018661A1 (en) | 2010-01-28 |
ES2650447T3 (es) | 2018-01-18 |
EP2169114A1 (fr) | 2010-03-31 |
CN101755091B (zh) | 2012-05-02 |
EP2169114B1 (fr) | 2017-08-30 |
CA2672556C (en) | 2014-06-03 |
CN101755091A (zh) | 2010-06-23 |
ES2310976A1 (es) | 2009-01-16 |
US7972481B2 (en) | 2011-07-05 |
BRPI0806815A2 (pt) | 2011-09-13 |
EP2169114A4 (fr) | 2013-11-20 |
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