EP2255047A1 - Scraper blade and scraper for scraping off materials from a substrate - Google Patents
Scraper blade and scraper for scraping off materials from a substrateInfo
- Publication number
- EP2255047A1 EP2255047A1 EP08734588A EP08734588A EP2255047A1 EP 2255047 A1 EP2255047 A1 EP 2255047A1 EP 08734588 A EP08734588 A EP 08734588A EP 08734588 A EP08734588 A EP 08734588A EP 2255047 A1 EP2255047 A1 EP 2255047A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- scraper
- scraping
- fastening
- doctor blade
- guide
- 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
- 239000000463 material Substances 0.000 title claims abstract description 72
- 238000007790 scraping Methods 0.000 title claims abstract description 64
- 239000000758 substrate Substances 0.000 title claims abstract description 23
- 230000007704 transition Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 5
- 239000007769 metal material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/006—Arrangements for removing of previously fixed floor coverings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D15/00—Apparatus or tools for roof working
- E04D15/003—Apparatus or tools for roof working for removing roof material
Definitions
- the invention relates to a scraper blade according to the preamble of claim 1. Furthermore, the present invention relates to a scraper according to the preamble of each of claims 15 and 16.
- the scraper blade is made of a metallic sheet or a piece of sheet metal having at one end a mounting portion which can be clamped between an upper attachment piece and a lower attachment piece of the attachment part.
- the attachment pieces of the attachment part are designed in such a way that when joining the attachment pieces a recess for receiving the scraper blade is formed.
- Object of the present invention is to provide a scraper blade and a scraper of the type mentioned above, with which it is possible in a simple manner to solve materials from a substrate with little wear of the scraper and with little effort.
- a scraper blade with the features of claim 1.
- at least one guide section is provided for discharging scraped material over at least one leading edge of the attachment member such that a highest point of an upper-side guide surface is located above an upper abutment edge and / or a lower end of a lower-side guide surface below a lower abutment edge of the attachment member or is aligned with the abutting edge, wherein according to the invention it is further provided that the guide section is obtainable by forming the metallic flat material.
- the guide section ensures that it can not come to a contact of scraped material components with a front, for example, frontal abutting edge of the fastening part during scraping.
- the leading section automatically guides the trailing scraped material past the upper or lower abutting edge of the fastening part so that there is no wear on the fastening part of the scraper when scraping off the material and the scraping process requires only low pressure forces.
- the guide section On the upper side, has a guide surface which is angled and / or bent relative to the scraping surface in order to ensure the removal of scraped-off material. Toward a front scraping or cutting edge, the guide section of the doctor blade passes without interruption into the scraping section.
- the doctor blade it is also possible for the doctor blade to have an arcuate course extending from a front scraping edge to a highest point of the top-side guide surface with the same direction of curvature, the transition between the scraping surface and the guide surface being fluid.
- the scraping surface is straighter or flat portion of the scraper blade formed, wherein the transition of the scraper surface in the guide surface is carried out continuously or the adjoining surfaces are aligned. This simplifies the discharge of scraped material.
- a low point of a lower-side guide surface of the guide section is arranged below a lower abutting edge of the fastening part or aligned with the abutting edge, the lower guide surface during scraping ensures that the fastening part with the end face does not stick firmly against the substrate during a scraping operation not scraped off material components strikes.
- the attachment part is slightly raised as a result of the non-scraped off material components. Incidentally scraped material components are also passed on the underside of the doctor blade on the fastening part over.
- forming is to be understood in the context of the invention as a generic term for all manufacturing processes in which metals are selectively brought plastically into another form. Plastic deformations of metallic materials are effected by flow, with changes in shape occurring as the load increases. Forming processes which can be used in connection with the invention include, for example, pressure forming, tensile pressure forming, tensile forming and bending.
- the metallic flat material preferably has over the entire embankment
- TM 25 of the doctor blade to a substantially constant thickness in the scraping direction.
- the term "substantially” takes into account the fact that during the forming process an unwanted small change in the sheet thickness can occur.
- forming processes can be inexpensively and easily produce high numbers of scraper blade 30 invention.
- metallic flat materials can be used with a very low thickness as a doctor blade and be formed corresponding to guide sections in the flat material. Due to the low material thickness of the material, it is also easy to scrape off a coating from a substrate.
- the grinding of the doctor blades is easily possible, with ground doctor blades having a greater sharpness than, for example, doctor blades, which can be machined from a metallic flat material of greater thickness by milling.
- the doctor blades of thin metal sheet according to the invention also have a higher flexibility, which makes it easier to penetrate during the peeling in the area between a covering and a substrate.
- the scraper blade according to the invention may have a thickness of 0.25 to 2.0 mm, preferably between 0.5 to 1.5 mm, in particular between 0.75 to 1.0 mm.
- the width of doctor blades, which are used for hand-operated scraper can be between 15 to 30 mm, preferably about 20 mm.
- the length of the aforementioned doctor blades is in this case between 100 to 300 mm, preferably up to 200 mm.
- Scraper blades for so-called stripper can extend transversely to the scraping direction over a length of 200 to 400 mm, wherein the extension of the doctor blades in Schabraum between 40 to 80 mm, preferably about 60 mm, may be.
- the scraper blades of the type in question have a majority of rectangular shape with partly rounded corners. In order to ensure secure retention of the blade on the scraper, the scraper blade is preferably clamped across the entire length of the blade in a direction transverse to the scraping direction in the fastening part.
- the doctor blade can also be hardened differently, wherein in the region of the scraping edge the doctor blade should have the greatest hardness. This contributes to a low wear of the doctor blade during Abschabvorgang.
- the guide section preferably transitions without interruption into the fastening section.
- the guide portion can be obtained in this case by pressing the metallic sheet, without it comes to a rupture or puncture of the sheet material when pressed.
- the scraper blade has in this case over the entire length and width of a continuous surface, so that scraped material components can be derived substantially completely over the guide section.
- a guide section by up or down a stamped sheet metal area are obtained, so that the doctor blade has an interruption in the transition region between the guide portion and the mounting portion.
- the attachment portion may be formed as a straight or planar clamping area, which allows a firm clamping in the fastening part of the scraper.
- a holding region which transitions into the guide section and is unwound and / or bent relative to the clamping region may be provided, wherein, more preferably, the holding region is bent or bent upward and / or downward relative to the clamping region by approximately 30 ° to 90 ° can be.
- the holding region can contribute to a secure fixation of the doctor blade in the fastening part.
- the recess formed between the mounting pieces of the fastening part has a first preferably flat recess portion for the clamping portion of the mounting portion and a second recess portion connected to the first recess portion for the holding portion of the mounting portion wherein the second recess region is angled and / or bent relative to the first recess region, and wherein the second recess region has the outlet opening.
- the outlet opening of the recess is preferably provided on the upper side or a lower side of the fastening part, wherein the planar fastening section of the blade can be clamped substantially horizontally between the fastening pieces.
- the outlet opening is not provided in the region of the central longitudinal axis of the fastening part.
- the holding region of the doctor blade is arranged after clamping in the fastening part outside of the fastening part, for example, an end face of the fastening part bears against the holding area, so that the doctor blade during Abschabvorgang sure is held on the fastening part and over the holding area, a portion of the necessary pressure during the scraping force is introduced into the doctor blade.
- the scraping portion may be formed as a flat flat area.
- the scraping section and the clamping region of the fastening section can moreover be arranged in a common plane, wherein the guide section is angled and / or bent downwards and / or downwards relative to the plane. If the scraping section and the clamping region of the fastening section are arranged in a common plane, high compressive forces during scraping can easily be transferred to a substrate via the doctor blade.
- the guide section preferably has a pitch and / or a pitch of less than 30 °, preferably less than 20 °.
- the holding region of the fastening section and the guide section may have an equal pitch or an equal gradient, so that the doctor blade according to the invention in a longitudinal section has a profile wave whose flanks are formed by the holding area on the one hand and the guide section on the other hand. This embodiment is easy to prepare and allows scraping with little effort.
- Blade may be less than 10 mm, preferably less than 5 mm, in particular less than 3 mm. As a result, the Umformaufwand is reduced and the
- the scraper surface and the guide surface should be aligned in order to ensure easy discharge of scraped off material.
- the guide section in the transition region to the fastening section may have a rounded deflecting edge, which leads to the scraped-off material being deflected by the abrading section. Process incoming material is automatically released from the doctor blade and transported away over a joint edge of the fastening part away.
- the guide section extends transversely to the scraping direction over the entire doctor blade.
- a plurality of guide sections may also be provided, the guide sections extending over the scraper blade in regions transverse to the scraper blade can be obtained by sectioning the metallic sheet material.
- the guide sections are arranged side by side and spaced from one another transversely to the Abschabides. This results in a continuous series of reshaped areas of the scraper blade, which are surrounded by non-reshaped areas.
- the scraper blade is ground on both sides in a hand scraper.
- the front end of the scraper section then has a chamfer on the underside and on the upper side, so that both sides of the scraper blade can be used for scrapping.
- the one-sided grinding of a scraper blade may be advantageous since it comes to a self-sharpening of the blade during the scraping process.
- ground doctor blades can preferably be used in strippers in this context.
- Fig. 1 is a known from the prior art scraper with a
- FIG. 2 shows a first embodiment of a scraper according to the invention in a longitudinal side view
- FIG. 3 shows a second embodiment of a scraper according to the invention in a longitudinal side view
- 4 shows a third embodiment of a scraper according to the invention in a longitudinal side view
- FIG. 5 shows a fourth embodiment of a scraper according to the invention in a longitudinal side view
- FIG. 6 shows a fifth embodiment of a scraper according to the invention in a longitudinal side view
- FIG. 7 shows a sixth embodiment of a scraper according to the invention in a longitudinal side view
- FIG. 8 shows a seventh embodiment of a scraper according to the invention in a longitudinal side view
- FIG. 11 is a plan view of the doctor blade of the illustrated in Fig. 2
- Fig. 12 is a plan view of the doctor blade of the illustrated in Fig. 7
- FIG. 13 is a plan view of a first embodiment of a doctor blade of the type shown in Fig. 9,
- FIG. 14 shows a second embodiment of a doctor blade of the type shown in FIG. 9 in a plan view
- FIG. 15 shows a third embodiment of a doctor blade of the type shown in FIG. 9 in a plan view and FIG Fig. 16 is a plan view of the scraper blade shown in Fig. 8.
- a known from the prior art hand scraper 1 which has a fastening part 2 and a doctor blade 3.
- the fastening part 2 is formed in two pieces and has an upper attachment piece 4 and a lower attachment piece 5.
- the scraper 1 is provided for scrapping materials, not shown, from a substrate, the scraper blade 3 having at a front end a chamfer 6 on the underside of the scraper blade 3 and on the upper side a scraper surface 7.
- the shear blade 3 is clamped starting from the middle region to a rear end in a recess formed between the upper attachment piece 4 and the lower attachment piece 5, wherein the rear end face 8 of the doctor blade 3 acts against the lower attachment part 5 during scraping.
- doctor blades 10 which consist of a metallic sheet and are designed for use in a scraper 1 1 shown in Figs. 2 to 8 for scraping materials from a substrate.
- the scraper blade 10 has in each case at a front end on at least one scraping surface 12 having scraping section 13, wherein the doctor blades shown 10 may have different lengths Schababismee 13.
- each scraper blade 10 has at its rear end a fixing portion 14 for fixing to a fixing part 15 of the scraper 1 1 on.
- the fastening part 15 is also divided in two and has an upper fastening piece 16 and a lower fastening piece 17.
- Each scraper blade 10 has at least one central guide section 18 for discharging scraped material over at least one front abutment edge 19 of the attachment part 15, the guide section 18 being obtainable by reshaping the scraper blade 10.
- the scraper blade 10 can have a guide section 18 with an upper-side guide surface for discharging scraped material over an upper abutment edge 19 and a further guide section 20 with a lower-side guide surface 29 for discharging scraped material have a lower abutting edge 21.
- FIGS. 1 In the illustrated in FIGS.
- the discharge of scraped-off material on the underside of the scraper blade 10 is caused by the fact that the central longitudinal axis Xi of the Schababitess 13 relative to the central longitudinal axis X 2 of the planar portion of the fastening portion is offset 14 down so that during scraping the scraped material does not abut against the lower edge 21.
- scraped-off material By deriving scraped-off material via the guide section 18, 20, it is ensured that scraped-out material can not cause wear of the fastening part 15 in the area of the front abutment edge 19, 21. Moreover, by diverting the scraped material scraping a floor covering with less effort possible.
- the guide section 18 is bent or angled upwards or downwards relative to the straight scraper section 13, wherein the guide section 18, 20 preferably has a pitch and / or a gradient of less than 30 °, preferably less than 20 ° , may have.
- the gradient of the further guide section 20 is approximately 30 ° to 45 ° in order to ensure the safe removal of scraped off material on the underside.
- the scraping section 13 seamlessly merges with the guide section 18, with the scraping surface 12 and the upper-side guide surface 22 of the guide section 18 being aligned.
- the scraper blade 10 between a highest point 23 of the top-side guide surface 22 and a scraping edge 24 may have an arcuate course with rectified curvature.
- the scraper blades 10 have a substantially constant thickness d over the entire embedding in the scraping direction X, the thickness being between 0.25 and 2.0 mm, preferably between 0.5 and 1.5 mm.
- the scraping section 13 is arranged offset downwards so far that during scrapping no contact of the end face of the lower attachment piece 17 with non-scraped-off material components or unevenness of the floor must be feared.
- the scraper section 13, which is in the form of a flat flat area, and a planar clamping area 25 of the fastening section 14 are arranged in a common plane, the guide section 18, 20 facing upward or downward relative to the common plane is angled downwards or bent.
- the fastening section 14 may have a holding region 26 which is angled and / or bent relative to the clamping region 25, as shown in FIGS. 2, 3, 4, 5 and 7.
- a recess formed between the upper fastening piece 16 and the lower fastening piece 17 of the fastening part 15 has a first preferably flat recess area for the clamping area 25 of the fastening portion 14 and a second recess area connected to the first recess area for the angled and / or bent retaining area 26 of the fastening portion 14, wherein the second recess region is angled and / or bent relative to the first recess region.
- the upper fastening piece 16 has an outlet opening 27 for the doctor blade 10.
- the outlet opening is provided in the lower attachment piece 17, the second recess area opening into the outlet opening 27.
- the fixing member 15 can also strike with an end face against the holding portion 26, so that the scraper blade 10 is held securely on the fastening part 15 and the power transmission is simplified during Abschabvorgang.
- dargestell- The holding region 26 is thus arranged outside of the fastening part 15.
- the holding region 26 of the fastening section 14 and the guide section 18 can have an equal pitch, so that the doctor blade 10 shown in FIG. 3 has a profiled shaft in a longitudinal sectional view.
- the profile shown in Fig. 3 can be easily produced.
- the distance ai, a 2 , a 3 between the highest point 23 and / or a low point 28 of the guide surface 22, 29 and the central longitudinal axis Xi of the scraping section 13 and / or the central longitudinal axis X 2 of the clamping region 25 of the mounting portion 14 can therefore be less than 10 mm, preferably less than 5 mm, in particular less than 3 mm. This is shown schematically in FIGS. 2 and 7.
- the scraper blade 10 in the transition region of the guide portion 18 to the mounting portion 14 each have a rounding to prevent abutment of scraped material against the doctor blade 10 in this area and to demand the detachment of the scraped material from the doctor blade 10.
- the scraping section 13 may be chamfered in the region of the scraping edge 24 on the underside and / or on the upper side.
- the embodiments illustrated in FIGS. 6 to 8 have doctor blades 10, which are ground on both sides. Due to the selected shape of the doctor blades 10 with an upper guide portion 18 and a lower guide portion 20, as shown in Figs. 6 and 7, or mirror-symmetrically arranged guide portions 18, 20 as shown in FIG. 8, it is possible for the doctor blade 10 on both sides Use scraping while passing scraped material safely past the fastener 15.
- FIGS. 9 and 10 show two further embodiments of doctor blades 10, the doctor blade 10 shown in FIG. has cut 18, which is available by pressing the doctor blade 10.
- the doctor blade 10 in this case has an uninterrupted profile which extends from the front scraping edge 24 to the rear end of the attachment portion 14.
- the guide portion 18 is obtained by punching the doctor blade 10 and then bending the stamped portion.
- the scraper blade 10 is interrupted in the transition region between the attachment portion 14 and the guide portion 18.
- the scraper blade 10 shown in Fig. 2 is shown in a view from above.
- the scraper blade shown in Fig. 7 is shown in a view from above.
- the guide section 18, 20 extends over the entire length of the scraper blade 10. However, the guide section can only extend in regions over the scraper blade 10, as shown in FIG showing the doctor blade 10 shown in Fig. 9 in a view from above.
- Shown in FIGS. 14 to 16 are doctor blades 10, which have a plurality of guide sections 18, 20, wherein the guide sections 18, 20 extend transversely to the Abschabraum side by side and spaced from each other on the doctor blade 10.
- the guide sections 18, 20 are available by pressing or pressing the flat material. According to FIG.
- guide sections 18, 20 which are angled or bent in different directions are provided adjacent to one another. As a result, on the one hand, the removal of scraped off material from the scraper blade 10 is ensured. On the other hand, the detachment of scraped off material from the scraper blade 10 is facilitated.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Coating Apparatus (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2008/001597 WO2009106097A1 (en) | 2008-02-29 | 2008-02-29 | Scraper blade and scraper for scraping off materials from a substrate |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2255047A1 true EP2255047A1 (en) | 2010-12-01 |
EP2255047B1 EP2255047B1 (en) | 2014-04-09 |
Family
ID=39942758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08734588.0A Active EP2255047B1 (en) | 2008-02-29 | 2008-02-29 | Scraper for scraping off materials from a substrate |
Country Status (3)
Country | Link |
---|---|
US (1) | US20110000045A1 (en) |
EP (1) | EP2255047B1 (en) |
WO (1) | WO2009106097A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110453928B (en) * | 2019-08-08 | 2021-03-09 | 陕西建工第九建设集团有限公司 | Outer wall ash handling equipment for high-rise building |
USD950179S1 (en) * | 2020-05-18 | 2022-04-26 | Unger Marketing International, Llc | Ice scraper |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4275476A (en) * | 1979-09-19 | 1981-06-30 | Hopkins Manufacturing Corporation | Ice scraper |
US4748711A (en) * | 1986-06-12 | 1988-06-07 | Markus Franklyn M | Ice/snow scraping system |
US4809436A (en) * | 1987-01-23 | 1989-03-07 | Crookston James R | Shingle stripping tool |
US5001946A (en) * | 1990-02-12 | 1991-03-26 | Jack W Shirlin | Roof shingle stripping apparatus |
US5280676A (en) * | 1993-03-23 | 1994-01-25 | Fieni Gabriel J | Apparatus for removing shingles and nails from a roof |
CA2160399C (en) * | 1995-10-12 | 2005-07-19 | William Harpell | Shingle removing tool |
US5924204A (en) * | 1998-01-27 | 1999-07-20 | Lane; Charles | Scraper tool and blade and method of use |
US6098292A (en) * | 1998-03-10 | 2000-08-08 | Harpell; William | Demolition tool |
US6058809A (en) * | 1998-04-20 | 2000-05-09 | Flanz; Anthony | Family of dismantling devices |
JPH11324301A (en) * | 1998-05-22 | 1999-11-26 | Yayoi Kagaku Kogyo Kk | Scraper for executing interior finish work |
US6029545A (en) * | 1998-08-03 | 2000-02-29 | Harpell; William | Roofing tool |
US6352009B1 (en) * | 2000-06-13 | 2002-03-05 | Shear Technologies, Llc | Tool and method for installing and/or removing fasteners |
SE0101649L (en) * | 2001-05-10 | 2002-04-16 | Johan Josdal | Scratch Tools |
US6751869B2 (en) * | 2002-07-12 | 2004-06-22 | Patrick W. Paggeot | Skirted floor scraper blade |
US7252021B1 (en) * | 2004-06-03 | 2007-08-07 | Herbert Garfield Linscott | Roof shingle and nail remover |
US7469444B1 (en) * | 2004-06-30 | 2008-12-30 | D2Rm Corp. | Shock absorbing ice scraper |
US7299719B1 (en) * | 2005-05-02 | 2007-11-27 | Chad Edward Flakne | Shovel plow apparatus |
US8365378B1 (en) * | 2010-03-11 | 2013-02-05 | Edward Lenart | Molding removal tool assembly |
-
2008
- 2008-02-29 US US12/919,053 patent/US20110000045A1/en not_active Abandoned
- 2008-02-29 EP EP08734588.0A patent/EP2255047B1/en active Active
- 2008-02-29 WO PCT/EP2008/001597 patent/WO2009106097A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2009106097A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20110000045A1 (en) | 2011-01-06 |
WO2009106097A1 (en) | 2009-09-03 |
EP2255047B1 (en) | 2014-04-09 |
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