EP2727653B1 - Device to settle an uniform layer of powder on a metallic layer - Google Patents
Device to settle an uniform layer of powder on a metallic layer Download PDFInfo
- Publication number
- EP2727653B1 EP2727653B1 EP13005152.7A EP13005152A EP2727653B1 EP 2727653 B1 EP2727653 B1 EP 2727653B1 EP 13005152 A EP13005152 A EP 13005152A EP 2727653 B1 EP2727653 B1 EP 2727653B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- strip
- layer
- blade
- metal strip
- 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.)
- Not-in-force
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/04—Apparatus specially adapted for applying particulate materials to surfaces the particulate material being projected, poured or allowed to flow onto the surface of the work
Landscapes
- Powder Metallurgy (AREA)
- Details Of Garments (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
- The present invention relates to a newly innerly designed and built device, able to settle an uniform layer of powder of bronze or other metals on a support surface. The support surface is represented by a metal strip in copper clad steel, on which the bronze powder is applied in order to obtain a multilayer final product to be used, for example, for the production of friction bearings.
- At the state of the art, there are known methods for the application of bronze powders on metal foils in order to obtain a multilayer product to be used in the field of friction bearings. An example of such application is provided in the US patent application n°
US6042778 , where there is described a method for the formation of a multilayer product. According to such technology, a thin layer of bronze powder is applied on the laminated metal support. In the following, such product is sintered and compacted so that it forms a layer with predetermined thickness (up to 20 weight percent). Another example is represented by the international patent application n°WO2008141592 A1 where there is described a multilayer product obtained by binding a layer of bronze powder on the metal plate, by means of a bonding agent and in the following it is laminated and dried. - Another example is represented by the US patent application n°
US2910040 where it is described a device which makes an adhesion, of "coating kind", of a coating on a stripe of other material in order to obtain sheets having an uniform coating layer. The coating is preferably subjected to vibrations, in particular coming from the blade spreading the coating. - However, the known methods do not provide indications concerning the features of the settled layer, in particular those relative to uniformity and homogeneity.
- The present invention provides to apply a layer of powder on a metal surface using a new device which distributes a powder based on bronze or other substances on a metal strip, in an uniform, homogeneous and planar way with respect to the support condition, with modifiable thickness according to the needs. The adhesion does not occur by "coating" but by means of a sintering method which follows the powder deposit.
- Said device comprises means for supplying the powder, provided with a particularly shaped outflow channel and leveling means for the settled layer. According to another embodiment, the device comprises a micrometric adjusting system able to determine the thickness, the quantity, the planarity of the bronze powder to be settled on the metal surface, able to determine the peculiarity of the same product.
- These and other advantages will be clearer in the detailed description of the invention, which will specifically refer to drawings 1-5,
figures 1-6 , in which there is shown an absolutely not limiting embodiment of the invention, the scope of protection of the invention is defined by the appended claims. - In particular:
-
fig. 1 shows an axonometric view of an example of device according to the invention as a whole; -
fig. 2 shows a plan view scheme of the advancing system of the metal strip; -
fig. 3 shows a frontal view scheme of the advancing system of the metal strip; -
fig. 4 shows a section view of the advancing system of the metal strip; -
fig. 5 shows a detail of the blade which levels the powder on the metal strip surface; -
fig. 6 shows a detail of the upper holding and supplying hopper of the powder. - Referring to said figures, the device according to the present invention is provided with many elements as a whole and comprises: an
upper hopper 1 for holding and supplying the powder, which is supported on asupport structure 2, positioned on the advancing system of themetal strip 3, alower hopper 4 for collecting the excessive powder and acontainer 5 for recovering the excessive powder, which can be simply extracted. Said advancing system of themetal strip 3 is positioned on thesupport structure 6, is adjustable in height and having anti-vibrant supporting feet, to which it is constrained thelower hopper 4. - The powder contained in the
upper hopper 1 goes down for gravity through anoutflow channel 8 on themetal strip 7. Saidoutflow channel 8 has a rectangular section, which becomes narrower while approaching to the outflow section. - According to a preferred embodiment, the length of said
rectangular outflow section 8 is approximately equal as the width of the metal strip and its width is equal to about 3 mm. The latter dimension is optimized in order to accompany the powder the nearest possible to the metal plate so that the powder particles are not dispersed. - Said
steel strip 7, coil shaped at the beginning, after being unwound by an unwinding reel and successively straightened, passes in an advancing system of thestrip 3 and proceeds constantly. - Here, the
steel strip 7 is supported on a series ofrolls 11 and is further guided by anupper roll 13 up to meet ablade 9 which levels the powder on the surface of themetal strip 7 in a homogeneous and planar way with respect to the same surface of the strip. Theblade 9 shown in detail infig. 5 has a slightly convex shape according to its length, so that it is slightly nearer to the metal strip in its central portion than to its periphery. The blade, when positioned at the desired distance, is stationary and so vibration free. It has a contact layer in strong metal and its working temperature is the ambient one. Its particular configuration allows further to improve the distribution of the powder on the strip, since the slight vibrations which, in any case, are originated from the device movement, tend to bring the powder to the center of the same metal plate. - Said
metal strip 7 has to planar and perfectly clean, before the powder is settled thereon. - A
lower hopper 4 for collecting powder allows to recover the excessive powder which falls after being leveled by theblade 9 and precipitates in thecollection container 5. - The
upper roll 13 and theblade 9 are controlled withmicrometric actuation devices 12 and it is possible to move them both upwards and downwards. They can be controlled also for the parallel movement or only from the desired side, remaining in the fixed position from the opposite side. The moving of these twomicrometric actuation devices 12 varies while the desired thickness varies and the position is controlled by means of millesimal digital comparators arranged on each side, two for theblade 9 and two for theroll 13. - In the following the strip meets grooved and cushioned
wheels 14, which guide it laterally and avoid that the just settled powder layer is ruined by contact with other surfaces; the position of said wheels cannot be controlled. - The thus obtained strip is characterized by an homogeneous bronze layer with controlled thickness, which is uniform and co-planar to the metal support, which is then suitable to be used as friction bearing.
Claims (7)
- Device for settling an uniform layer of powder on a metal strip comprising at least a means for holding and supplying the powder (1) that comprises an outflow channel (8) with rectangular section which becomes narrower while approaching to the outflow section, a system for advancing the strip (3) that comprises a stationary blade (9) which levels the powder settled on the strip surface (7) so that it is uniform and planar, and characterized in that said strip (7) meets grooved and cushioned wheels (14) which guide it laterally and avoid that the just settled powder layer is ruined.
- Device according to claim 1, wherein said system for advancing the strip (3) comprises a plurality of rolls (11), on which said strip (7) and an upper roll (13) are supported with guide function.
- Device according to claim 2, wherein said upper roll (13) and said blade (9) are controlled by micrometric actuation devices (12) to obtain various thicknesses.
- Device according to any one of the preceding claims, wherein said outflow channel (8) with rectangular section has a length approximately equal to the width of the metal strip and a width equal to about 3 mm.
- Device according to any one of the preceding claims, wherein said blade (9) has a slightly convex shape according to its length, so that it is slightly nearer to the metal strip in its central portion than to its periphery.
- Device according to any one of the preceding claims, wherein said means for holding and supplying the powder (1) is an upper hopper.
- Device according to any one of the preceding claims, further comprising a lower hopper (4) for collecting the excessive powder and a container (5) for recovering the excessive powder.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000051A ITBG20120051A1 (en) | 2012-10-31 | 2012-10-31 | DEVICE FOR THE STORAGE OF A UNIFORM LAYER OF POWDER ON A METAL TAPE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2727653A1 EP2727653A1 (en) | 2014-05-07 |
EP2727653B1 true EP2727653B1 (en) | 2019-03-06 |
Family
ID=47603911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13005152.7A Not-in-force EP2727653B1 (en) | 2012-10-31 | 2013-10-30 | Device to settle an uniform layer of powder on a metallic layer |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2727653B1 (en) |
IT (1) | ITBG20120051A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112495722B (en) * | 2020-12-15 | 2022-06-14 | 廊坊鸿禹乔防水材料有限公司 | Gravel dispersing device in waterproof roll production and working method thereof |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1012582B (en) * | 1952-09-18 | 1957-07-25 | Heinrich Nicolaus G M B H | Process for the production of uniform coatings on carrier material webs and device for carrying out the process |
CH356591A (en) * | 1957-06-29 | 1961-08-31 | Accumulatoren Fabrik Aktienges | Device for applying a layer of very fine powder |
EP0852298B1 (en) | 1996-12-14 | 2003-03-19 | Federal-Mogul Deva GmbH | Journal bearing material and method for manufacturing the same |
DE10117875C1 (en) * | 2001-04-10 | 2003-01-30 | Generis Gmbh | Method, device for applying fluids and use of such a device |
DE102004008168B4 (en) * | 2004-02-19 | 2015-12-10 | Voxeljet Ag | Method and device for applying fluids and use of the device |
DE102006035856B4 (en) * | 2006-08-01 | 2008-10-16 | Rümmer System Engineering GmbH | Coating device for the scheduled application of cover slips on the upper side of a carrier material |
CN101074702B (en) | 2007-05-24 | 2012-03-28 | 浙江长盛滑动轴承股份有限公司 | Lead-free self-lubricating bearing and its production |
-
2012
- 2012-10-31 IT IT000051A patent/ITBG20120051A1/en unknown
-
2013
- 2013-10-30 EP EP13005152.7A patent/EP2727653B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
ITBG20120051A1 (en) | 2014-05-01 |
EP2727653A1 (en) | 2014-05-07 |
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