• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Rotary blade assembly applicable to tile cutting machines; which has an annular blade (1), mounted on a bearing (2) comprising an inner ring (21), an outer ring (22) and rolling balls (23). The outer ring (22) comprises, on a first side, a perimeter projection (24) that forms a mounting stop for the blade (1) on the bearing; On the second side of the outer ring (22) there is mounted and fixed a fixing ring (3) that forms a second mounting stop for the blade (1); the bearing and/or the fixing ring comprising projections or recesses (31, 25, 26) that engage in complementary recesses or projections (11, 12) defined in the blade, and prevent the relative rotation of the blade (1) with respect to the fixing ring (3) and the outer ring (22) of the bearing (2). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2778550A1
    申请号:ES201930098
    申请日:2019-02-08
    公开日:2020-08-10
    发明作者:Salvador Durán
    申请人:Germans Boada SA；
    IPC主号:
    专利说明:

    [0002] Rotary blade assembly applicable to tile cutting machines
    [0004] Technical sector
    [0006] This invention is within the sector of tile cutting machines, and more specifically in the manufacture of the rotating blade assembly, used in said cutting machines to mark a tear line in the tiles.
    [0008] Prior state of the art
    [0010] Tile cutting machines have a rotating blade mounted with the possibility of turning on a shaft secured to a rod for fixing to the cutting machine.
    [0012] This blade has an annular configuration to allow its mounting with the possibility of turning on the shaft fixed to the stem, either directly or with the interposition of a bearing that provides a smoother and more uniform movement of the blade.
    [0014] The documents closest to the object of the present invention are those provided with a cutting assembly applicable to tile cutting machines, in which the blade is mounted on a bearing.
    [0016] Specifically, document US5331877A describes a rotating blade assembly used in a tile cutter that has inner and outer cylindrical tracks assembled in a single unit and between which rolling balls are arranged; the outer ring presenting on its outer surface a perimeter groove in which the annular blade is mounted.
    [0018] In this document, the assembly of the assembly in the tile cutter is carried out by means of a fixing shaft that is inserted in the central hole of the inner ring of the bearing.
    [0019] The problem with this background is that the mounting of the annular knife in the The peripheral groove of the outer ring of the bearing requires subjecting the blade, made of hard material, to significant stresses, which can cause parts of the material to break or detach during the use of the cutter.
    [0021] In addition, this assembly requires obtaining a degree of adjustment between the blade and the outer ring of the bearing so that both pieces remain solid in the rotation, which further complicates the mounting of the blade in the groove of the outer ring of the bearing.
    [0023] Document US20022189421 describes a rotary blade assembly used in a tile cutter comprising: a bearing provided with an outer ring and an inner ring between which rolling balls are arranged; and - a circular blade, of annular configuration, which is mounted in a centered position with respect to the outer ring of the bearing and is fixed by means of two clamping rings, one arranged on each side of the blade. These locking rings are provided with a conical central hole, tapered towards the corresponding outer side, for their snap-fit on the outer surface of the outer ring of the bearing.
    [0025] These locking rings act on the opposite sides of the blade and are held in the mounting position by the action of the edge corresponding to the smaller base of the conical central hole on against the surface of the outer ring of the bearing.
    [0027] This assembly does not guarantee that the clamping rings are permanently kept in the initial assembly position, a slight misadjustment of the tightening established by said clamping rings against the opposite faces of the circular blade is sufficient for said blade not to rotate in a controlled manner and uniform with the outer ring of the bearing, which can cause irregularities in the tear line marked by said blade on the tiles.
    [0029] In some cases the technical problem that arises is to prevent the hard metal of the blade from rotating on the outer ring of the bearing and to provide an alternative solution that allows mounting of the blade without tension to avoid the risk of breakage.
    [0030] Risks of breakage are only found in hard metal, since the stresses generated during the mounting of the bearing and the blade can cause this effect on the metal. Lasted.
    [0032] Another known technique for attaching the blade to the bearing consists of the use of adhesives, however this solution does not guarantee a stable attachment over time and requires an excessive amount of time to be spent in manufacturing the assembly of the rotating blade with the bearing.
    [0034] Explanation of the invention
    [0036] The rotating blade assembly applicable to tile cutting machines, object of this invention, is of the type mentioned above, that is, it has an annular blade mounted on a bearing comprising: a lower ring, an outer ring and some rolling balls arranged between both rings; this assembly being mounted by means of the inner ring of the bearing on a shaft fixed to a connecting rod with the tile cutting machine.
    [0038] This blade cutting assembly has technical characteristics aimed at guaranteeing the mounting of the blade on the external surface of the outer ring of the bearing without tensions that may damage its material, and guaranteeing the integral rotation of the blade with the outer ring of the bearing, preventing the blade from rotating with respect to said outer ring of the bearing.
    [0040] To achieve the proposed objectives, the outer ring of the bearing comprises an external surface, in contact with the blade, which has on a first side of its outer surface a perimeter projection that forms a first lateral stop for mounting the blade on the bearing.
    [0042] The cutting assembly further comprises a blade fixing ring, which is mounted on a second side of the outer ring of the bearing, fixed to said outer ring and which forms a second mounting stop for the blade; so that said blade is arranged between the perimeter projection that forms the first stop and the fastening ring that forms the second stop.
    [0043] An essential characteristic of the invention is that the bearing and / or the fixing ring comprise projections or recesses on a surface in contact with the blade, which in the assembly mounting position, they engage in complementary recesses or projections defined in the corresponding contact surface of the blade and prevent the relative rotation of the blade with respect to the fixing ring and the outer ring of the bearing.
    [0045] With the aforementioned characteristics, mounting the blade on the bearing does not require subjecting any of these elements to stresses that could affect the assembly or even cause some breakage of the material, being the coupling of the projections and the complementary recesses mentioned above those in charge to integrate the rotation of the blade with the rotation of the outer ring of the bearing and of the fixing ring.
    [0047] Preferably, the locking ring and the outer ring of the bearing are fixed to each other by welding, micro-welding or interference, which is a quick solution and ensures that the locking ring cannot move or generate play in the areas of lateral contact with the annular and radial contact blade with the outer ring of the bearing.
    [0049] According to the invention, the perimeter projection of the external surface of the outer ring of the bearing and the fixing ring, has suitable thicknesses for the centered disposition of the blade with respect to the bearing.
    [0051] The characteristics of the invention and the different positions of the projections and of the recesses in charge of preventing the rotation of the blade with respect to the outer ring of the bearing will be more easily understood in view of the exemplary embodiments shown in the figures.
    [0053] Brief description of the content of the drawings
    [0055] To complement the description that is being made and in order to facilitate the understanding of the characteristics of the invention, the present specification is accompanied by a set of drawings in which, by way of illustration and not limitation, the following has been represented:
    [0056] - Figure 1 shows a schematic elevation view of a first embodiment of the rotary blade assembly applicable to tile cutting machines, according to the invention, mounted by means of a shaft on a rod for coupling to a tile cutting machine.
    [0058] - Figure 2 shows an elevation view of the blade assembly of Figure 1 sectioned along a vertical plane.
    [0060] - Figure 3 shows a perspective view of the blade assembly of figure 1 seen from the side bearing some welds, micro welds or interferences between the fixing ring and the outer ring of the bearing.
    [0062] - Figure 4 shows an exploded perspective view of the blade assembly of Figure 1.
    [0064] Figures 5 and 6 show two elevational views of a variant embodiment of the blade assembly, exploded and assembled respectively, in which the blade and the fixing ring have been sectioned along a vertical plane,
    [0066] - Figure 7 shows an exploded perspective view of a variant embodiment of the blade assembly in which the projections and recesses responsible for preventing the relative rotation of the blade with respect to the outer side of the bearing define the inner surface of the blade and on the surface of the outer ring of the bearing respective geometric shapes, complementary and not cylindrical, in this case, quadrangular.
    [0068] - Figure 8 shows an elevation view of the blade assembly of figure 7, assembled, and with the blade and the fixing ring sectioned along a vertical plane,
    [0070] Detailed exposition of embodiments of the invention
    [0072] In the embodiment shown in Figures 1 to 4, the rotating blade assembly applicable to tile cutting machines, comprises an annular blade (1) mounted on a bearing (2) which, as represented in Figure 1, allows the rotation of the same with respect to an axis (4) integral with a rod (4) for fixing said assembly to a tile cutting machine (not shown).
    [0074] In figure 2, the bearing (2) comprises: an inner ring (21) with an axial hole for mounting on the shaft (41), an outer ring (22) and rolling balls (23) arranged between the ring inner ring (21) and outer ring (22).
    [0076] The outer ring (22) of the bearing has a cylindrical outer surface provided on a first side with a perimeter projection (24), in a radial direction, forming a first side stop for mounting the blade (1) on the part.
    [0078] The fixing of the blade (1) in the assembly position represented in figure 2 is carried out by means of a fixing ring (3) mounted on a second side of the outer ring (22) of the bearing (2) so that In the assembly position, the blade (1) is arranged between the perimeter projection (24) and the fixing ring (3). The perimeter projection (24) of the outer ring of the bearing and the fixing ring (3) are dimensioned so that in the mounting position the blade (1) is centered with respect to the median plane of the bearing (2).
    [0080] As shown in figure 3, the fixing ring (3) is fixed to the outer ring (22) of the bearing by welding, micro-welding or interference (5) that prevent its relative displacement.
    [0082] As can be seen in Figures 2 and 4, the blade (1) and the fixing ring (3) have projections (31) and complementary recesses (11) on their facing lateral surfaces, which are coupled to each other in the mounting position, so that the blade (1) rotates jointly with the fixing ring (3) and consequently with the outer ring (22) of the bearing that is fixed to said fixing ring (3) by welding, micro-welding or interference (5).
    [0084] In the variant embodiment shown in Figures 5 and 6, the lateral projections (25) intended to be housed in the recesses (11) of the blade (1) are defined on the side of the outer ring (22) of the bearing corresponding to the projection perimeter (24).
    [0085] It should be mentioned that the recesses (11) defined in the cutting disc (1) may have a depth less than the width of the blade (1), as shown in Figures 2 and 4; or be through, with a depth equal to the total width of the blade (1), as shown in figure 5.
    [0087] In the variant embodiment shown in Figures 7 and 8, the complementary projections and recesses responsible for preventing the relative rotation of the blade (1) with respect to the outer ring (22) of the bearing (2) are located on the surfaces of the blade and of the outer ring facing in radial direction; defining complementary non-cylindrical shapes (26, 12), in this specific case, quadrangular.
    [0089] Once the nature of the invention has been sufficiently described, as well as an example of a preferred embodiment, it is stated for the appropriate purposes that the materials, shape, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential characteristics of the invention that are claimed below.
    权利要求:
    Claims (7)
    [1]
    1. - Rotating blade assembly applicable to tile cutting machines; having an annular blade (1), mounted on a bearing (2) comprising an inner ring (21), an outer ring (22) and rolling balls (23) arranged between both rings; characterized in that:
    - the outer ring (22) comprises, on a first side, a perimeter projection (24) that forms a first side stop for mounting the blade (1) on the bearing;
    - The assembly comprises a fixing ring (3) of the blade (1) mounted on a second side of the outer ring (22) of the bearing, fixed to said outer ring (22) and forming a second mounting stop for the blade (one);
    - the bearing and / or the fixing ring comprise on a surface in contact with the blade some projections or recesses (31,25, 26) which, in the assembly assembly position, engage in recesses or projections (11, 12) complementary defined in the corresponding contact surface of the blade, and prevent the relative rotation of the blade (1) with respect to the fixing ring (3) and the outer ring (22) of the bearing (2).
    [2]
    2. - Blade assembly according to claim 1, characterized in that the fixing ring (3) and the outer ring (22) of the bearing (2) are fixed together by welding, micro-welding or interference (5).
    [3]
    3. - Set of blade according to any one of the preceding claims characterized in that the perimeter projection (24) of the outer ring (22) of the bearing and the fixing ring have thicknesses suitable for the centered arrangement of the blade with respect to the bearing.
    [4]
    Knife assembly, according to any one of claims 1 to 3, characterized in that the projections (31) and the coupling recesses (11) are defined on the facing lateral faces of the fixing ring (3) and of the knife (one)
    [5]
    5. Blade assembly, according to any one of claims 1 to 3, characterized in that the projections (25) intended to be housed in the recesses (11) of the blade (1) are defined on the side of the outer ring (22 ) of the bearing corresponding to the perimeter projection (24).
    [6]
    6 Blade assembly, according to any one of the preceding claims, characterized in that the recesses (11) defined in the cutting disc (1) have a depth less than or equal to the total width of the blade (1).
    [7]
    7.- Blade assembly, according to any one of claims 1 to 3, characterized in that the complementary projections and recesses in charge of preventing the relative rotation of the blade (1) with respect to the outer ring (22) of the bearing (2) are located arranged on radially facing surfaces of the blade (1) and the outer ring; defining complementary non-cylindrical shapes (26, 12).
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    同族专利:
    公开号 | 公开日
    WO2020161371A1|2020-08-13|
    US20210354330A1|2021-11-18|
    ES2778550B2|2020-12-17|
    CN112912218A|2021-06-04|
    CA3114838A1|2020-08-13|
    EP3932639A1|2022-01-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1750718A|1927-09-16|1930-03-18|Hobbs Mfg Company|Scoring wheel|
    US2239454A|1939-10-20|1941-04-22|Hobbs Mfg Company|Scoring cutter|
    US4217693A|1979-04-11|1980-08-19|Boise Cascade Corporation|Controlled depth scoring tool|
    US5331877A|1993-06-02|1994-07-26|Ishii Chokokogu Mfg. Co., Ltd.|Rotary blade assembly for a tile cutter|
    JPH08174539A|1994-12-21|1996-07-09|Rohm Co Ltd|Wheel cutter|
    US20020189421A1|2001-05-08|2002-12-19|Akinori Ishii|Rotary blade for a tile cutter|
    CN203945506U|2014-01-18|2014-11-19|胡磊磊|Manual ceramic-tile cutting device band bearing break bar|
    法律状态:
    2020-08-10| BA2A| Patent application published|Ref document number: 2778550 Country of ref document: ES Kind code of ref document: A1 Effective date: 20200810 |
    2020-12-17| FG2A| Definitive protection|Ref document number: 2778550 Country of ref document: ES Kind code of ref document: B2 Effective date: 20201217 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201930098A|ES2778550B2|2019-02-08|2019-02-08|ROTARY BLADE ASSEMBLY APPLICABLE TO TILE CUTTING MACHINES|ES201930098A| ES2778550B2|2019-02-08|2019-02-08|ROTARY BLADE ASSEMBLY APPLICABLE TO TILE CUTTING MACHINES|
    CA3114838A| CA3114838A1|2019-02-08|2020-01-17|Rotary blade assembly that can be used in tile-cutting machines|
    CN202080005851.9A| CN112912218A|2019-02-08|2020-01-17|Rotary blade assembly for ceramic tile cutting machine|
    PCT/ES2020/070030| WO2020161371A1|2019-02-08|2020-01-17|Rotary blade assembly that can be used in tile-cutting machines|
    US17/281,959| US20210354330A1|2019-02-08|2020-01-17|Rotary blade assembly that can be used in tile-cutting machines|
    EP20751914.1A| EP3932639A1|2019-02-08|2020-01-17|Rotary blade assembly that can be used in tile-cutting machines|
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